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EP1338393A1 - Apparatus for embossing a preform made of hydraulic binder and process and production line for manufacturing boards made of hydraulic binder - Google Patents

Apparatus for embossing a preform made of hydraulic binder and process and production line for manufacturing boards made of hydraulic binder Download PDF

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Publication number
EP1338393A1
EP1338393A1 EP02290462A EP02290462A EP1338393A1 EP 1338393 A1 EP1338393 A1 EP 1338393A1 EP 02290462 A EP02290462 A EP 02290462A EP 02290462 A EP02290462 A EP 02290462A EP 1338393 A1 EP1338393 A1 EP 1338393A1
Authority
EP
European Patent Office
Prior art keywords
preform
hydraulic binder
pulleys
slat
production line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02290462A
Other languages
German (de)
French (fr)
Inventor
Paul Jallon
Michel Rigaudon
Jean Louis Laurent
Jean Paul Solomut
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Etex France Building Performance SA
Original Assignee
Lafarge Platres SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lafarge Platres SA filed Critical Lafarge Platres SA
Priority to EP02290462A priority Critical patent/EP1338393A1/en
Priority to IL16351703A priority patent/IL163517A0/en
Priority to CNB038046571A priority patent/CN100411839C/en
Priority to DK04027078.7T priority patent/DK1510316T3/en
Priority to MXPA04008186A priority patent/MXPA04008186A/en
Priority to NZ534531A priority patent/NZ534531A/en
Priority to JP2003571058A priority patent/JP2005525243A/en
Priority to KR1020097014966A priority patent/KR100960605B1/en
Priority to BRPI0308074A priority patent/BRPI0308074B1/en
Priority to NZ552217A priority patent/NZ552217A/en
Priority to ES03732623.8T priority patent/ES2549680T3/en
Priority to AU2003239650A priority patent/AU2003239650B2/en
Priority to RU2004128450A priority patent/RU2313452C2/en
Priority to ES04027078.7T priority patent/ES2618522T3/en
Priority to PL370532A priority patent/PL202026B1/en
Priority to KR10-2004-7013355A priority patent/KR20040093071A/en
Priority to CA2476497A priority patent/CA2476497C/en
Priority to EP03732623.8A priority patent/EP1480800B1/en
Priority to ARP030100612 priority patent/AR038609A1/en
Priority to US10/505,543 priority patent/US7790090B2/en
Priority to UA20040907791A priority patent/UA81904C2/en
Priority to DK03732623.8T priority patent/DK1480800T3/en
Priority to EP04027078.7A priority patent/EP1510316B1/en
Priority to PCT/FR2003/000606 priority patent/WO2003072326A2/en
Publication of EP1338393A1 publication Critical patent/EP1338393A1/en
Priority to ZA2004/06341A priority patent/ZA200406341B/en
Priority to IL179895A priority patent/IL179895A0/en
Priority to IL163517A priority patent/IL163517A/en
Priority to CO04084752A priority patent/CO5601040A2/en
Priority to NO20044058A priority patent/NO20044058L/en
Priority to US10/904,738 priority patent/US7651327B2/en
Priority to IL179895A priority patent/IL179895A/en
Priority to JP2009042475A priority patent/JP2009113497A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0092—Machines or methods for applying the material to surfaces to form a permanent layer thereon to webs, sheets or the like, e.g. of paper, cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
    • B28B11/0863—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads for profiling, e.g. making grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
    • B28B11/16—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for extrusion or for materials supplied in long webs
    • B28B11/166—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for extrusion or for materials supplied in long webs with devices for determining the correct cutting moment, e.g. measuring rollers or the like

Definitions

  • the present invention relates to an apparatus which can be used in particular to make an imprint in a preform based on hydraulic binder intended for be cut into plates.
  • the invention also relates to a method of manufacture of hydraulic binder plates and a binder-based plate production line hydraulics using this device.
  • U.S. Patent No. 4,781,558 describes an apparatus intended for the manufacture of plasterboard comprising hollows. He therefore proposes to carry out, on a preform intended to be cut to give plasterboard, hollows by means of a drum 34 having bumps 36 (see in particular Figure 1 of this patent). The depth of the troughs is therefore determined by the dimension bumps. So to change the depth and / or the shape of these hollows, the drum 34 should be replaced by another drum / having dimension bumps and / or different shape (s).
  • fingerprints 51A, 51B are produced in a preform intended to be cut to give plasterboard, by means (see in particular Figure 1 and column 3, lines 29 to 43 of this patent) of a band 20 rotating around two rollers 21 and having a protuberance 25. The preform is then cut in the middle of the footprints so that produce plates with thinned edges.
  • band 20 In this case too, to change the dimensions and / or the shape of the footprints, it would be necessary to replace band 20 with another band having protrusions of different size and / or shape (s).
  • the invention therefore essentially aims to resolve the problem of making impressions in a preform while offering the possibility to change easily and quickly the size and / or shape of these footprints.
  • this device it is therefore enough simply to detach the removable means and replace them with others having a dimension and / or a shape different (s) to change the size and / or shape impressions made in the preform.
  • the invention also relates to a method of manufacture of a plate based on hydraulic binder from a preform intended to be cut, this process including a step during which, at using an apparatus according to the invention, an imprint in the preform.
  • This process has the particular advantage of making it possible obtaining plates with thinned edges.
  • the invention further relates to a line of production of hydraulic binder-based plates from a preform comprising a facing material covered with a hydraulic binder composition and supported by a conveyor belt, characterized in that it comprises an apparatus according to the invention, the distance between the transmission belts of this device being at least equal to the width of the preform and this apparatus being suitably arranged for that when its drive belts rotate, its or its thread (s) creates (s) an imprint in the preform.
  • This production line also has the advantage of allow the production of plates with thinned edges.
  • first two pulleys 102 and 103 On this frame 101 are supported, at a first end 104, first two pulleys 102 and 103 and, at a second end 107, two second pulleys 105 and 106.
  • the first 102,103 pulleys are in a in the foreground, the second pulleys 105,106 in a second plane and the first plane is parallel to the second plane.
  • Pulley 102 and pulley 105 are the same size and located one opposite the other.
  • the pulley 103 and the pulley 106 are also the same dimension and located one opposite the other.
  • Pulleys 102, 103, 105 and 106 can rotate on themselves.
  • a first transmission belt 108 surrounds the first pulleys 102,103 and a second belt transmission 109 surrounds the second pulleys 105,106.
  • Transmission belts 108 and 109 are identical. They are linked to each other by the minus one wire 111.
  • This wire 111 is removably attached to the first and second belts 108,109 and so that its longitudinal axis be parallel to the axis of rotation of pulleys.
  • the pulley 102 drives the belt transmission 108 which itself drives the other pulley located in the same plane as it (pulley 103) as well as the elongated means 110.
  • the latter moves then according to the trajectory defined, on the one hand, by the loop formed by the belt 108 and, on the other hand, as it is connected to the second belt 109, also by the loop formed by the latter.
  • the symmetry of the apparatus according to the invention allows so the axis of the wire 111 to move along an ellipse, its axis remaining constantly parallel to that of pulleys.
  • the apparatus may also include means drive in rotation of at least one of the pulleys. These means can possibly cause two pulleys by means of the tree on which they are mounted.
  • the wire 111 generally has a shape cylindrical, but it can take a large number of forms among which we can cite the forms parallelepidedic, prismatic, the shape of a brochure, etc.
  • wires 111 are arranged parallel to each other to others, along the transmission belts 108 and 109 (see Figure 1) and removably attached. They are preferably spaced from each other.
  • the pulleys are preferably cogwheels and the transmission belts of the chains being able cooperate with these cogwheels.
  • the support piece 113 is visible in Figures 2.4 and 5.
  • It includes the bore 118 able to cooperate with the corresponding part 117 of the wire clamp axis 114 and a bore 121 opening into bore 118.
  • This bore 121 is threaded so that one can screw a pressure screw 122 intended to compress the wire 111 present inside the hole 118 for the purpose of hold firmly (see figure 2).
  • the assembly of FIG. 2 is carried out. For this, it just introduce the part 117 of the wire clamp axis 114 in support piece 113, remove the bearing axle from normal roller of the link 112, to introduce in the axis of the roll the part 116 of the wire clamp pin 114, to tighten the whole by aiming a nut 123 on the end 115 of the wire clamp axis 114, to introduce the wire 111 into the central bore 120 of the wire clamp axis 114 and the y hold firmly by tightening the pressure screw 122 in threaded bore 121 until it compresses effectively wire 111.
  • wire clamp axis 114 is mounted in such a way so that his head 119 is on the inner side of the chain, that is to say facing the other chain.
  • the support piece 113 preferably comprises two torques (drilling 118, threaded bore 121), spacing between the axes of the holes 118 corresponding to the normal spacing between the axes of the rollers of a chain link 112, so that two wires 111 can be kept on the same link 112, as we can deduce from Figures 4 and 5.
  • the apparatus according to the invention can be used, in a process for manufacturing binder-based plates hydraulic, to make an impression in the preform intended to be cut to give the plates based on hydraulic binder.
  • the preform is then preferably cut at the level of the footprint or opposite of where was made this imprint (i.e. on the other side of the preform).
  • the apparatus according to the invention is used in a process manufacturing plasterboard with thinned edges.
  • edges transverse in this presentation we mean the edges perpendicular to the direction of movement of the mat transporter in a plate production line hydraulic binder base. Such transverse edges are also called “plate ends”.
  • the hydraulic binder composition includes preferably plaster.
  • the facing materials 1 and 3 can be made sheets of paper or cardboard, glass mats or any material known to those skilled in the art as being capable of serve as facing material.
  • a slat 6 is inserted between the preform 5 and the start of the conveyor belt 7.
  • the distance between forming plate 4 and start of mat conveyor 7 is such that the preform 5 does not have still had time to harden noticeably and present still great plasticity.
  • the introduction is performed in such a way that the longitudinal axis of the batten 6 is substantially perpendicular to the direction of moving the conveyor belt 7.
  • the slat 6 is then driven by the carpet conveyor 7, just like the preform 5.
  • the socket hydraulic and hardening the composition of plaster 2 is then carried out throughout the movement of preform 5, designated by arrows A.
  • the removal of the slat 6 takes place before cutting the preform 5.
  • the hardness of the preform 5 is sufficient to that the slat 6 can be removed without deforming the preform 5 and without the plaster composition 2 coming fill the space or thinning 8 (figure 7) left by removing the batten 6.
  • the removal of the slat 6 can be carried out according to any suitable way. For example, when the length of the slat 6 is greater than the width of the preform 5, the slat 6 projects from the preform 5, and can then be removed quickly according to a direction substantially perpendicular to the direction movement of the conveyor belt 7 and away of the last. This withdrawal action is illustrated by arrow B in Figure 6.
  • the removal of the slat 6 can also occur by the fall of this slat 6 in the space between two rollers of the conveyor belt system which, in general, is not continuous throughout the production line, but is formed by several mats driven by rollers between which there are free spaces.
  • the preform 5 continues to move, still driven by the carpet carrier 7 and curing the composition of plaster 2 continues.
  • the cutting device is adjusted by so that the knife 9 cuts the preform 5 approximately in the middle of thinning 8.
  • each thinning 8 depends on the slat dimensions 6.
  • the latter is generally a parallelepiped whose thickness is generally between 0.5 and 4 mm, preferably between 1.5 and 4 mm.
  • Its width is generally between 5 and 20 cm and its length is at least about equal to the width of preform 5 (possibly reduced by the width of the longitudinal "tape" bands present if applicable), but generally higher in order to be able to enter it for remove it from under the preform 5.
  • the slat 6 is of a longer length to the width of the preform 5, so as to project relative to it, which can facilitate its withdrawal.
  • the material of the slats 6 does not matter, from the as long as it allows these slats to resist the weight of the preform thickness 5 which is above each slat 6. It can therefore be a plastic material, wood, metal, etc. having good resistance to wear and stability over time.
  • the process which has just been described complements a known process for manufacturing plasterboard with two thinned longitudinal edges.
  • the latter generally provides for the establishment of a strip, usually made of plastic, called generally "tape", on each longitudinal side of the conveyor belt 7.
  • Tape a strip, usually made of plastic
  • hydraulic 11 as illustrated in FIG. 9, having, in addition to its two thinned transverse edges 10, two edges longitudinal 25 thinned, making a total of four edges thinned.
  • the length of the plasterboard produced depends of course the speed of movement of the mat carrier and the frequency of cutting operations.
  • the frequency of cutting operations is generally directly related to the frequency of introduction of slats, because we generally seek to obtain plates having two thinned transverse edges.
  • This process is very flexible because, to change the length of the plates produced, simply change the frequency of insertion of the slats.
  • the apparatus according to the invention can be used, in a binder-based plate production line hydraulic from a preform 5 comprising a facing material 1 covered with a composition of hydraulic binder 2 and supported by a belt carrier 7.
  • the apparatus according to the invention can be used optimally on the production line of hydraulic binder plates, the distance between the transmission belts of this device being at less equal to the width of the preform 5.
  • these belts and pulleys are on each side longitudinal of the preform.
  • the apparatus according to the invention is arranged to appropriately so that when its belts transmission rotate, its elongated means creates a imprint in the preform 5.
  • the apparatus according to the invention can be above the preform 5, in this case, it creates the imprint 12 or under preform 5, in which case it creates the imprint 12bis.
  • the apparatus according to the invention is located above the preform 5.
  • the cutting device can be adjusted to cut the preform at the level of an imprint 12.
  • the cutting device can be set to cut the preform away from the place where this 12bis print was made.
  • the plate production line for hydraulic binder base is a production line of plates with aminished edges.
  • a production line now goes be described in detail with reference to Figures 6 to 15. Then, we will describe how we use the apparatus according to the invention in this line.
  • Figure 11 is shown part of a binder-based plate production line hydraulic.
  • a slat store 20 formed of a horizontal rectangular surface 21 from the corners from which rise vertically and parallel, four angular pieces 22, in the form of an angle iron and facing each other, so as to frame a stack of slats 23.
  • this slatted magazine 20 is such that it can store a high number of slats 23 (see also Figures 12 and 13).
  • the horizontal surface 21 of the slat magazine 20 is supported by feet 24.
  • first batten 23 At the level of the first batten 23, that is to say that located at the bottom of the stack, are arranged in parallel two cylinders 26, which are oriented so as to extract the first batten 23 from the stack by pushing and dragging it to an incline 27 consisting of a downwardly inclined surface 28 and a rim 29 at its lower part to retain the slat which has just been extracted and guide it later.
  • a cylinder 31 is arranged parallel to the longitudinal axis of the inclined plane 27, so that the actuation of this jack 31 can give an impulse to the slat which has just been extracted from the slat store 20.
  • the slat thus propelled can then move by sliding parallel to the longitudinal axis of the inclined plane 27, whose rim 29 guides it, towards a second inclined plane 32 which extends the first inclined plane 27, on the side transverse opposite to side 30.
  • This second inclined plane 32 also consists of an inclined surface 33 provided a rim 34 at its lower part. It includes in addition to a stop 35 at its end opposite to the jack 31, this stop being generally made up of a pneumatic shock absorber and being intended to put a end of the movement of the slat propelled by the jack 31.
  • the rim 34 is provided with openings 36 opposite which are arranged two cylinders 37 oriented so as to propel the batten positioned on the second inclined plane 32 upwards of the inclined surface 33.
  • the first inclined plane 27 and the second plane tilted 32 are supported by feet, respectively, 38 and 39.
  • a flat surface 40 is provided parallel to the surface 23, between the latter and the first inclined plane 27 to horizontally support a slat extracted from the slatted magazine 20 before its descent on the surface inclined 28 of the first inclined plane 27.
  • the height of feet 24, 35 and 36 is chosen so a slat positioned on the second inclined plane 32 is at a height lower than that of the preform 5.
  • the length of the second inclined plane 32 is at least equal to that of lath 23, i.e. at least equal to, and preferably greater than, the width of the preform 5.
  • the difference between the length of the slat and the width of the preform 5 makes it possible to grasp the batten and remove it once the plaster composition has hardened.
  • the production line according to the invention comprises usually electronic means that control its function and allow, if necessary, to enslave between them the implementations of different operations.
  • Electronic means provide that after the introduction of a slat under the preform by actuation of the jacks 27, the jack 31 is actuated to introduce a new batten on the second plane inclined 32, then the cylinders 26 are actuated to introduce another slat on the first inclined plane 27, and so on.
  • Electronic means can vary the frequency of these operations to reduce or increase the length of the plasterboard with edges thinnings produced.
  • Figure 16 shows part of a line of production carried out according to a preferred embodiment of the invention.
  • the line of production includes a variant of the device according to the invention
  • This device which is seen in profile in the figure 16, includes first four sprockets 201,202,203,204 supported by a frame 205 and surrounded by a chain 206 consisting of links, including some, the links 207 each support 2 wires, of the manner indicated in relation to FIG. 2.
  • This device is symmetrical about a plane vertical aligned with the direction of travel of the preform 5.
  • the wires held by the links 207 extend transversely to the preform 5 up to a second chain, identical to chain 206, and which surrounds second gear wheels identical to first gear wheels 201,202,203,204.
  • the device is fitted with an electric motor 209 driving in rotation via a belt 211 the shaft 210 on which the wheel 203 and its symmetrical wheel.
  • the rotation of these wheels causes the that of chain 206 in the direction indicated by the arrow D.
  • This preform 5 is obtained in a known manner by introduction of the hydraulic binder paste according to the arrow E between the first facing material 2 and the second facing material 3 and passage of the assembly between the upper 214 and lower 215 shelves of forming the device.
  • the distance between the gears 201,202,203,204 and their symmetrical wheels is at least equal to that of preform 5 so that these gear wheels do not touch not this preform 5.
  • the apparatus according to the invention is fixed at a height appropriate so that when the line is in operation of production, the displacement of chain 206 resulting that of the wires connected to the links 207, these wires pass in the forming plate, that is to say between the plates 214 and 215 and protrude downward relative to the upper plate 214.
  • the space occupied by these wires enters the upper plate 114 and the second material of facing 3 then translates into this place by a thinning of the thickness of the preform 5.
  • the device is intended to cooperate with the slat insertion device under the preform constituted by means 20 to 22 and 24 to 39 described above in relation to Figures 11 to 15.
  • the chain 206 is then provided with a pushing finger 216 which is fixed on the outside of the chain 206, that is to say the one opposite to where the wires are located.
  • This push finger 216 has the function of striking and move the pusher 217 during the rotation of the chain 206. It can be attached to a link in the chain 206 for example in place of a roller carrying axis of this link.
  • the jacks 37 (FIG. 15) are replaced by push-buttons 217 which can take place in the openings 36 of the rim 34 (figure 11).
  • a push-button 217 is more visible on the Figures 17 and 18.
  • This pusher includes a part elongated in the form of a ruler 218 provided at one end of a part in the shape of a right-angled triangle 219 crossed by an axis 220 which protrudes on both sides of the part 219. The top of the right triangle is cut to give a face 221 parallel to the axis of the shaped part rule 218.
  • the pusher 217 can occupy two positions. In its position initial (shown in dotted lines), it rests on the tray 215 and is facing the ground, so that its axis 220 is arranged transversely to the preform 5 and its face 221 is at the part lower of the inclined surface 33, in the opening 36 ledge 34.
  • pusher 217 When pusher 217 is struck by the finger of thrust 216, it moves up the surface inclined 33. In doing so it pushes the slat 23 which comes then fit between preform 5 and the mat carrier 7.
  • the push finger 216 on the chain 206 is located a distance from the wires held by the links 207, such that the slat 23 is introduced substantially opposite the location of the preform 5 where said wires have just formed the imprint. This has consequence that the displacement of matter caused by the introduction of the slat 23 is at least partially offset by the footprint. It follows that the preform does not has no bump in the opposite place to where the batten 23 has been introduced. This means that after removal of this slat 23, on the thinning obtained on the underside of preform 5 does not correspond to any bump on top of the preform 5.
  • the pusher 217 moved by the pushing finger 216 arrives in a second position by finishing its race in a receptacle, visible in FIGS. 17 and 18, and which is formed by two arcuate pieces 222 fixed by their upper ends on either side of the outer end 225 of the rod 223 of a jack 224.
  • Each side of the axis 220 of the pusher 217 is received in an arcuate piece 222 and the parts 219 and 218 of the push button 217 can be inserted in the space formed between the arcuate parts 222, under the rod 223 of the jack 224.
  • the dimensions of the pusher 217 are chosen so that it stays above the inclined surface 33.
  • the jack 224 can be fixed to the frame 205 of the device, its location and dimensions being determined according to the push button 217 with which it must cooperate.
  • the actuator 224 therefore has the function of return the pusher 217 to its initial position. Its stem 223 is normally in the extended position, pending receive button 217.
  • each of the chains being provided with a push finger 216 each cooperating with a jack 224, and this, in a synchronized manner.
  • Electronic and pneumatic means (or possibly hydraulic) of the production line control the operation of the production device footprints and slat insertion device under the preform constituted by means 20 to 22 and 24 to 39 described above, so that once the pusher 117 returned to its initial position and the rod 223 of the jack 224 again, a new slat 23 can be slid on the inclined plane 33.
  • the actuation of the jack 224 either determined by detection for example, using a photoelectric sensor, the passage of a lug or finger fixed at an appropriate place on the chain 206, by example in the same way as the push finger 216, this lug playing the role of flag, that is to say that when detected by the photoelectric sensor arranged at a suitable location on the production line or of the device, the electronic means control the return of the rod 223 of the jack 224 in the body of the cylinder, this entraining return, as explained above, the return of the pusher 217 to its initial position. of the end-of-travel sensors for actuator 224, can then once the rod 223 retracted, cause a new actuation of the jack 224 to take out its rod 223, which causes the pusher 217 to fall into its initial position.
  • the frame 205 of the device according to the invention can, as can be seen from figure 16, being in solidarity with trays 214 and 215. It follows that the device according to the invention can be used in place of a forming flat or a master roll that is conventionally used.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

La présente invention concerne un appareil pouvant servir en particulier à la réalisation d'une empreinte (12 ou 12bis) dans une préforme (5) à base de liant hydraulique destinée à être coupée en plaques. Cet appareil comprend au moins : un bâti (101) ; des poulies (102,103,105,106) supportées par un bâti (101) ; deux courroies de transmission (108,109) entourant les poulies (102,103,105,106); au moins un fil (111) fixé de façon amovible aux courroies (108,109) et s'étendant entre ces courroies (108,109), de telle sorte que son axe longitudinal soit parallèle à l'axe de rotation des poulies (102,103,105,106). L'invention concerne également un procédé de fabrication de plaques à base de liant hydraulique et une ligne de production de plaques à base de liant hydraulique utilisant cet appareil. <IMAGE>The present invention relates to an apparatus which can be used in particular for producing an imprint (12 or 12bis) in a preform (5) based on hydraulic binder intended to be cut into sheets. The apparatus includes at least: a frame (101); pulleys (102,103,105,106) supported by a frame (101); two transmission belts (108,109) surrounding the pulleys (102,103,105,106); at least one wire (111) removably attached to the belts (108,109) and extending between these belts (108,109), so that its longitudinal axis is parallel to the axis of rotation of the pulleys (102,103,105,106). The invention also relates to a method for manufacturing plates based on hydraulic binder and a production line for plates based on hydraulic binder using this apparatus. <IMAGE>

Description

La présente invention concerne un appareil pouvant servir en particulier à la réalisation d'une empreinte dans une préforme à base de liant hydraulique destinée à être coupée en plaques.The present invention relates to an apparatus which can be used in particular to make an imprint in a preform based on hydraulic binder intended for be cut into plates.

L'invention concerne également un procédé de fabrication de plaques à base de liant hydraulique et une ligne de production de plaques à base de liant hydraulique utilisant cet appareil.The invention also relates to a method of manufacture of hydraulic binder plates and a binder-based plate production line hydraulics using this device.

Le brevet américain n° 4 781 558 décrit un appareil destiné à la fabrication de plaques de plâtre comportant des creux. Il propose donc de réaliser, sur une préforme destinée à être coupée pour donner des plaques de plâtre, des creux au moyen d'un tambour 34 comportant des bosses 36 (voir notamment la figure 1 de ce brevet) . La profondeur des creux est donc déterminée par la dimension des bosses. Ainsi, pour changer la profondeur et/ou la forme de ces creux, il faudrait remplacer le tambour 34 par un autre tambour /ayant des bosses de dimension et/ou forme différente(s).U.S. Patent No. 4,781,558 describes an apparatus intended for the manufacture of plasterboard comprising hollows. He therefore proposes to carry out, on a preform intended to be cut to give plasterboard, hollows by means of a drum 34 having bumps 36 (see in particular Figure 1 of this patent). The depth of the troughs is therefore determined by the dimension bumps. So to change the depth and / or the shape of these hollows, the drum 34 should be replaced by another drum / having dimension bumps and / or different shape (s).

Dans le brevet américain n° 2 991 824, des empreintes 51A,51B sont réalisées dans une préforme destinée à être coupée pour donner des plaques de plâtre, au moyen (voir notamment la figure 1 et colonne 3, lignes 29 à 43 de ce brevet) d'une bande 20 tournant autour de deux rouleaux 21 et comportant une protubérance 25. La préforme est ensuite coupée au milieu des empreintes de manière à produire des plaques aux bords amincis.In U.S. Patent No. 2,991,824, fingerprints 51A, 51B are produced in a preform intended to be cut to give plasterboard, by means (see in particular Figure 1 and column 3, lines 29 to 43 of this patent) of a band 20 rotating around two rollers 21 and having a protuberance 25. The preform is then cut in the middle of the footprints so that produce plates with thinned edges.

Dans ce cas aussi, pour changer les dimensions et/ou la forme des empreintes, il serait nécessaire de remplacer la bande 20 par une autre bande ayant des protubérances de dimension et/ou forme différente(s). In this case too, to change the dimensions and / or the shape of the footprints, it would be necessary to replace band 20 with another band having protrusions of different size and / or shape (s).

L'invention vise alors essentiellement à résoudre le problème de la réalisation d'empreintes dans une préforme tout en offrant la possibilité de changer aisément et rapidement la dimension et/ou la forme de ces empreintes.The invention therefore essentially aims to resolve the problem of making impressions in a preform while offering the possibility to change easily and quickly the size and / or shape of these footprints.

Plus précisément, l'invention concerne un appareil pour la réalisation d'une empreinte ou réservation sur une préforme à base de liant hydraulique. Cet appareil comprend donc au moins :

  • un bâti ;
  • deux premières poulies supportées à une première extrémité du bâti et deux secondes poulies à une seconde extrémité du bâti ; les premières poulies et secondes poulies étant dans des plans parallèles ; les poulies en regard l'une de l'autre étant identiques ;
  • deux courroies de transmission entourant respectivement les premières poulies et les secondes poulies ;
  • au moins un fil fixé de façon amovible aux courroies et s'étendant entre ces courroies, de telle sorte que son axe longitudinal soit parallèle à l'axe de rotation des poulies.
More specifically, the invention relates to an apparatus for producing an imprint or reservation on a preform based on hydraulic binder. This device therefore comprises at least:
  • a frame;
  • two first pulleys supported at a first end of the frame and two second pulleys at a second end of the frame; the first pulleys and second pulleys being in parallel planes; the pulleys facing each other being identical;
  • two transmission belts respectively surrounding the first pulleys and the second pulleys;
  • at least one wire removably attached to the belts and extending between these belts, so that its longitudinal axis is parallel to the axis of rotation of the pulleys.

Grâce à cet appareil, il suffit donc simplement de détacher les moyens amovibles et de les remplacer par d'autres ayant une dimension et/ou une forme différente(s) pour modifier la dimension et/ou la forme des empreintes réalisées dans la préforme.Thanks to this device, it is therefore enough simply to detach the removable means and replace them with others having a dimension and / or a shape different (s) to change the size and / or shape impressions made in the preform.

En outre, l'utilisation d'un tel appareil permet de faire varier aisément l'espacement entre deux empreintes et donc la longueur des plaques.In addition, the use of such a device allows easily vary the spacing between two cavities and therefore the length of the plates.

L'invention a également pour objet un procédé de fabrication d'une plaque à base de liant hydraulique à partir d'une préforme destinée à être coupée, ce procédé comprenant une étape au cours de laquelle on réalise, au moyen d'un appareil selon l'invention, une empreinte dans la préforme. The invention also relates to a method of manufacture of a plate based on hydraulic binder from a preform intended to be cut, this process including a step during which, at using an apparatus according to the invention, an imprint in the preform.

Ce procédé a notamment l'avantage de rendre possible l'obtention de plaques à bords amincis.This process has the particular advantage of making it possible obtaining plates with thinned edges.

Enfin, l'invention a en outre pour objet une ligne de production de plaques à base de liant hydraulique à partir d'une préforme comprenant un matériau de parement recouvert d'une composition de liant hydraulique et supportée par un tapis transporteur, caractérisée en ce qu'elle comprend un appareil selon l'invention, la distance entre les courroies de transmission de cet appareil étant au moins égale à la largeur de la préforme et cet appareil étant disposé de manière appropriée pour que lorsque ses courroies de transmission tournent, son ou ses fil(s) crée(nt) une empreinte dans la préforme.Finally, the invention further relates to a line of production of hydraulic binder-based plates from a preform comprising a facing material covered with a hydraulic binder composition and supported by a conveyor belt, characterized in that it comprises an apparatus according to the invention, the distance between the transmission belts of this device being at least equal to the width of the preform and this apparatus being suitably arranged for that when its drive belts rotate, its or its thread (s) creates (s) an imprint in the preform.

Cette ligne de production a également l'avantage de permettre la production de plaques à bords amincis.This production line also has the advantage of allow the production of plates with thinned edges.

D'autres caractéristiques et avantages de l'invention vont maintenant être décrits en détail dans l'exposé qui suit et qui est donné en référence aux figures, dans lesquelles :

  • la figure 1 représente schématiquement et en perspective, l'appareil selon l'invention ;
  • la figure 2 représente schématiquement et en coupe l'assemblage d'un fil sur un maillon de chaíne ;
  • la figure 3 représente schématiquement un axe pince-fil ;
  • la figure 4 représente schématiquement et en vue de dessus une pièce-support montée sur un maillon de chaíne ;
  • la figure 5 représente schématiquement la pièce-support de la figure 4 en vue de face ;
  • la figure 6 représente schématiquement une étape d'un procédé de fabrication de plaques à base de liant hydraulique ;
  • la figure 7 représente schématiquement une autre étape d'un procédé procédé de fabrication de plaques à base de liant hydraulique ;
  • la figure 8 représente une plaque que l'on peut obtenir avec le procédé selon l'invention ;
  • la figure 9 représente une autre plaque que l'on peut obtenir avec le procédé selon l'invention ;
  • la figure 10 illustre une étape intermédiaire optionnelle d'un procédé de fabrication de plaques à base de liant hydraulique ;
  • la figure 11 représente schématiquement et en perspective, une partie de la ligne de production de plaques à base de liant hydraulique ;
  • la figure 12 représente schématiquement et en vue de dessus, un dispositif pour l'introduction de lattes sous une préforme à base de liant hydraulique ;
  • la figure 13 représente schématiquement et en vue de côté, le dispositif de la figure 12 ;
  • la figure 14 représente schématiquement et en vue de côté une variante du dispositif de la figure 12 ;
  • la figure 15 représente schématiquement et en coupe, un détail du dispositif de la figure 12 illustrant l'introduction d'une latte sous une préforme à base de liant hydraulique ;
  • la figure 16 représente schématiquement une partie d'une ligne de production de plaques à base de liant hydraulique selon l'invention ; et
  • les figures 17 et 18 représentent schématiquement un poussoir et son réceptacle.
Other characteristics and advantages of the invention will now be described in detail in the description which follows and which is given with reference to the figures, in which:
  • Figure 1 shows schematically and in perspective, the apparatus according to the invention;
  • Figure 2 shows schematically and in section the assembly of a wire on a chain link;
  • Figure 3 schematically shows a wire clamp axis;
  • Figure 4 shows schematically and in top view a support piece mounted on a chain link;
  • Figure 5 schematically shows the support piece of Figure 4 in front view;
  • FIG. 6 schematically represents a step in a method of manufacturing plates based on hydraulic binder;
  • FIG. 7 schematically represents another step of a process for the production of plates based on hydraulic binder;
  • FIG. 8 represents a plate which can be obtained with the method according to the invention;
  • FIG. 9 shows another plate which can be obtained with the method according to the invention;
  • FIG. 10 illustrates an optional intermediate stage of a method for manufacturing plates based on hydraulic binder;
  • FIG. 11 shows schematically and in perspective, part of the production line for sheets based on hydraulic binder;
  • Figure 12 shows schematically and in top view, a device for the introduction of slats in a preform based on hydraulic binder;
  • Figure 13 shows schematically and in side view, the device of Figure 12;
  • Figure 14 shows schematically and in side view a variant of the device of Figure 12;
  • Figure 15 shows schematically and in section, a detail of the device of Figure 12 illustrating the introduction of a slat in a preform based on hydraulic binder;
  • FIG. 16 schematically represents part of a production line for plates based on hydraulic binder according to the invention; and
  • Figures 17 and 18 schematically represent a pusher and its receptacle.

EXPOSE DETAILLE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION APPAREIL SELON L'INVENTIONAPPARATUS ACCORDING TO THE INVENTION

L'appareil selon l'invention est représenté de manière schématique sur la figure 1.The apparatus according to the invention is represented by schematically in Figure 1.

Il comporte un bâti 101 qui est en forme de H, mais auquel l'homme du métier pourrait aisément donner de nombreuses autres formes.It has a frame 101 which is H-shaped, but which a person skilled in the art could easily give many other forms.

Sur ce bâti 101 sont supportées, à une première extrémité 104, deux premières poulies 102 et 103 et, à une seconde extrémité 107, deux secondes poulies 105 et 106. On this frame 101 are supported, at a first end 104, first two pulleys 102 and 103 and, at a second end 107, two second pulleys 105 and 106.

Les premières poulies 102,103 se trouvent dans un premier plan, les secondes poulies 105,106 dans un second plan et le premier plan est parallèle au second plan.The first 102,103 pulleys are in a in the foreground, the second pulleys 105,106 in a second plane and the first plane is parallel to the second plane.

La poulie 102 et la poulie 105 sont de même dimension et situées l'une en face de l'autre.Pulley 102 and pulley 105 are the same size and located one opposite the other.

La poulie 103 et la poulie 106 sont également de même dimension et situées l'une en face de l'autre.The pulley 103 and the pulley 106 are also the same dimension and located one opposite the other.

Les poulies 102,103,105 et 106 peuvent tourner sur elles-mêmes.Pulleys 102, 103, 105 and 106 can rotate on themselves.

Une première courroie de transmission 108 entoure les premières poulies 102,103 et une seconde courroie de transmission 109 entoure les secondes poulies 105,106.A first transmission belt 108 surrounds the first pulleys 102,103 and a second belt transmission 109 surrounds the second pulleys 105,106.

Les courroies de transmission 108 et 109 sont identiques. Elles sont reliées l'une à l'autre par au moins un fil 111.Transmission belts 108 and 109 are identical. They are linked to each other by the minus one wire 111.

Ce fil 111 est fixé de manière amovible aux première et seconde courroies 108,109 et de telle sorte que son axe longitudinal soit parallèle à l'axe de rotation des poulies.This wire 111 is removably attached to the first and second belts 108,109 and so that its longitudinal axis be parallel to the axis of rotation of pulleys.

Ainsi, lorsque l'une des poulies, par exemple la poulie 102, tourne, elle entraíne la courroie de transmission 108 qui elle-même entraíne l'autre poulie située dans le même plan qu'elle (la poulie 103) ainsi que le moyen de forme allongée 110. Ce dernier se déplace alors selon la trajectoire définie, d'une part, par la boucle constituée par la courroie 108 et, d'autre part, comme il est relié à la seconde courroie 109, également par la boucle constituée par cette dernière.So when one of the pulleys, for example the pulley 102, turns, it drives the belt transmission 108 which itself drives the other pulley located in the same plane as it (pulley 103) as well as the elongated means 110. The latter moves then according to the trajectory defined, on the one hand, by the loop formed by the belt 108 and, on the other hand, as it is connected to the second belt 109, also by the loop formed by the latter.

La symétrie de l'appareil selon l'invention permet donc à l'axe du fil 111 de se déplacer selon une ellipse, son axe restant constamment parallèle à celui des poulies.The symmetry of the apparatus according to the invention allows so the axis of the wire 111 to move along an ellipse, its axis remaining constantly parallel to that of pulleys.

On peut prévoir que deux poulies situées l'une en face de l'autre soient fixées sur un même arbre.We can provide that two pulleys located one in face of the other are fixed on the same tree.

L'appareil peut aussi comprendre des moyens d'entraínement en rotation de l'une au moins des poulies. Ces moyens peuvent éventuellement entraíner deux poulies au moyen de l'arbre sur lequel elles sont montées. The apparatus may also include means drive in rotation of at least one of the pulleys. These means can possibly cause two pulleys by means of the tree on which they are mounted.

Le fil 111 présente généralement une forme cylindrique, mais il peut revêtir un grand nombre de formes parmi lesquelles on peut citer les formes parallélépidédique, prismatique, la forme d'une plaquette, etc.The wire 111 generally has a shape cylindrical, but it can take a large number of forms among which we can cite the forms parallelepidedic, prismatic, the shape of a brochure, etc.

Il peut être fixé par exemple par vissage sur les courroies de transmission de façon à pouvoir être dévissé et remplacé aisément par un autre moyen de forme allongée.It can be fixed for example by screwing on the transmission belts so that they can be unscrewed and easily replaced by another form elongate.

Selon un mode de réalisation préféré de l'invention, plusieurs fils 111 sont disposés parallèlement les uns aux autres, le long des courroies de transmission 108 et 109 (voir Figure 1) et fixés de manière amovible. Ils sont de préférence espacés les uns des autres.According to a preferred embodiment of the invention, several wires 111 are arranged parallel to each other to others, along the transmission belts 108 and 109 (see Figure 1) and removably attached. They are preferably spaced from each other.

Les poulies sont de préférence des roues dentées et les courroies de transmission des chaínes pouvant coopérer avec ces roues dentées.The pulleys are preferably cogwheels and the transmission belts of the chains being able cooperate with these cogwheels.

La fixation des fils peut alors être réalisée comme illustré par la figure 2.The fixing of the wires can then be carried out as illustrated by figure 2.

Sur cette figure 2, on peut voir un fil 111 maintenu à un maillon de chaíne 112 au moyen d'une pièce-support 113 et d'un axe pince-fil 114.In this figure 2, we can see a wire 111 maintained to a chain link 112 by means of a support piece 113 and a wire clamp pin 114.

Ce dernier remplace, dans le maillon de chaíne 112, l'un des axes porteurs de rouleau classiquement utilisés.The latter replaces, in the chain link 112, one of the roller bearing axes conventionally used.

L'axe pince-fil 114 est montré en détail sur la figure 3. Il comprend, dans l'ordre :

  • une extrémité filetée 115,
  • une partie généralement cylindrique et lisse 116, apte à s'introduire dans le rouleau du maillon de chaíne 112 en vue de remplacer l'axe porte-rouleau utilisé classiquement,
  • une partie lisse également généralement cylindrique et lisse 117, de diamètre généralement supérieur à celui de la partie 116 et apte à s'introduire dans le perçage 118 de la pièce support 113 (voir figures 4 et 5),
  • une tête 119, et
  • un alésage central 120 usiné généralement à partir de la tête 119, pouvant s'étendre jusqu'à la partie 116 et destiné à recevoir le fil 111.
The wire clamp axis 114 is shown in detail in FIG. 3. It comprises, in order:
  • a threaded end 115,
  • a generally cylindrical and smooth part 116, capable of being introduced into the roller of the chain link 112 in order to replace the roller-holder axis conventionally used,
  • a smooth part also generally cylindrical and smooth 117, of diameter generally greater than that of the part 116 and capable of being introduced into the bore 118 of the support part 113 (see FIGS. 4 and 5),
  • a head 119, and
  • a central bore 120 generally machined from the head 119, which can extend to the part 116 and intended to receive the wire 111.

La pièce-support 113 est visible sur les figures 2,4 et 5.The support piece 113 is visible in Figures 2.4 and 5.

Elle comprend le perçage 118 apte à coopérer avec la partie correspondante 117 de l'axe pince-fil 114 et un alésage 121 débouchant dans le perçage 118. Cet alésage 121 est fileté de façon à ce qu'on puisse y visser une vis de pression 122 destinée à comprimer le fil 111 présent à l'intérieur du perçage 118 en vue de le maintenir fermement (voir figure 2).It includes the bore 118 able to cooperate with the corresponding part 117 of the wire clamp axis 114 and a bore 121 opening into bore 118. This bore 121 is threaded so that one can screw a pressure screw 122 intended to compress the wire 111 present inside the hole 118 for the purpose of hold firmly (see figure 2).

Ainsi, pour fixer un fil 111 sur le maillon de chaíne 112, on réalise le montage de la figure 2. Pour cela, il suffit d'introduire la partie 117 de l'axe pince-fil 114 dans la pièce support 113, d'enlever l'axe porteur de rouleau normal du maillon 112, d'introduire dans l'axe du rouleau la partie 116 de l'axe pince-fil 114, de serrer l'ensemble en visant un écrou 123 sur l'extrémité 115 de l'axe pince-fil 114, d'introduire le fil 111 dans l'alésage central 120 de l'axe pince-fil 114 et de l'y maintenir fermement en vissant la vis de pression 122 dans l'alésage fileté 121 jusqu'à ce qu'elle comprime efficacement le fil 111.So, to fix a wire 111 on the chain link 112, the assembly of FIG. 2 is carried out. For this, it just introduce the part 117 of the wire clamp axis 114 in support piece 113, remove the bearing axle from normal roller of the link 112, to introduce in the axis of the roll the part 116 of the wire clamp pin 114, to tighten the whole by aiming a nut 123 on the end 115 of the wire clamp axis 114, to introduce the wire 111 into the central bore 120 of the wire clamp axis 114 and the y hold firmly by tightening the pressure screw 122 in threaded bore 121 until it compresses effectively wire 111.

Bien entendu, l'axe pince-fil 114 est monté de telle sorte que sa tête 119 soit du côté intérieur de la chaíne, c'est-à-dire tournée vers l'autre chaíne.Of course, the wire clamp axis 114 is mounted in such a way so that his head 119 is on the inner side of the chain, that is to say facing the other chain.

La pièce-support 113 comporte de préférence deux couples (perçage 118, alésage fileté 121), l'espacement entre les axes des perçages 118 correspondant à l'espacement normal entre les axes des rouleaux d'un maillon de chaíne 112, de façon ce que deux fils 111 puissent être maintenus sur le même maillon 112, comme on peut le déduire des figures 4 et 5.The support piece 113 preferably comprises two torques (drilling 118, threaded bore 121), spacing between the axes of the holes 118 corresponding to the normal spacing between the axes of the rollers of a chain link 112, so that two wires 111 can be kept on the same link 112, as we can deduce from Figures 4 and 5.

On disposant ainsi plusieurs pièces-supports 113 identiques sur des maillons voisins, on parvient à aligner parallèlement plusieurs fils 111 de manière à constituer le moyen de forme allongée. There are thus several support pieces 113 identical on neighboring links, we manage to align several wires 111 in parallel so that constitute the elongated means.

PROCEDE SELON L'INVENTIONPROCESS ACCORDING TO THE INVENTION

L'appareil selon l'invention peut servir, dans un procédé de fabrication de plaques à base de liant hydraulique, à réaliser une empreinte dans la préforme destinée à être coupée pour donner les plaques à base de liant hydraulique.The apparatus according to the invention can be used, in a process for manufacturing binder-based plates hydraulic, to make an impression in the preform intended to be cut to give the plates based on hydraulic binder.

La préforme est alors de préférence coupée au niveau de l'empreinte ou à l'opposé de l'endroit où a été réalisée cette empreinte (c'est-à-dire sur l'autre face de la préforme).The preform is then preferably cut at the level of the footprint or opposite of where was made this imprint (i.e. on the other side of the preform).

Selon un mode de réalisation préféré de l'invention, l'appareil selon l'invention est utilisé dans un procédé de fabrication des plaques de plâtre à bords amincis.According to a preferred embodiment of the invention, the apparatus according to the invention is used in a process manufacturing plasterboard with thinned edges.

Un tel procédé est illustré par les figures 6 à 10. Il comprend les étapes suivantes :

  • 1) on coule sur un matériau de parement (1) supporté par un tapis transporteur (7), une composition de liant hydraulique (2) de façon à obtenir une préforme (5), puis on introduit sous la préforme (5), une latte (6,23) dont la longueur est au moins environ égale à la largeur de la préforme (5);
  • 2) on laisse la prise hydraulique de la composition de liant hydraulique (2) s'effectuer (2) et on retire ladite latte (6,23);
  • 3) on coupe la préforme (5) au niveau de l'amincissement (8) créé par la latte (6,23).
    • Such a method is illustrated in FIGS. 6 to 10. It comprises the following steps:
  • 1) is poured on a facing material (1) supported by a conveyor belt (7), a composition of hydraulic binder (2) so as to obtain a preform (5), then introduced under the preform (5), a batten (6,23) whose length is at least approximately equal to the width of the preform (5);
  • 2) the hydraulic setting of the hydraulic binder composition (2) is allowed to take place (2) and said slat (6,23) is removed;
  • 3) the preform (5) is cut at the level of the thinning (8) created by the slat (6,23).

    • Ce procédé de fabrication de plaques à base de liant hydraulique et à bords aminicis va maintenant être décrit en détail en se référant aux figures 6 à 15. Ensuite, sera décrite l'utilisation de l'appareil selon l'invention dans ce procédé.This method of manufacturing binder-based plates hydraulic and with aminic edges will now be described in detail with reference to Figures 6 to 15. Then, will be described the use of the device according to the invention in this process.

    Tout d'abord, il est précisé que par "bords transversaux", on entend dans le présent exposé les bords perpendiculaires au sens de déplacement du tapis transporteur dans une ligne de production de plaques à base de liant hydraulique. De tels bords transversaux sont également appelés « bouts de plaque ».First of all, it is specified that by "edges transverse ", in this presentation we mean the edges perpendicular to the direction of movement of the mat transporter in a plate production line hydraulic binder base. Such transverse edges are also called "plate ends".

    En se reportant à la figure 6, on voit une ligne de production de plaques produites par coulage sur un matériau de parement 1 d'une composition de liant hydraulique 2 et, généralement, recouvrement par un second matériau de parement 3. Le passage de l'ensemble sous la plaque de formage 4 donne une préforme 5.Referring to Figure 6, we see a line of production of plates produced by casting on a facing material 1 of a binder composition hydraulic 2 and generally covered by a second facing material 3. The passage of the assembly under the forming plate 4 gives a preform 5.

    La composition de liant hydraulique comprend de préférence du plâtre.The hydraulic binder composition includes preferably plaster.

    Les matériaux de parement 1 et 3 peut être constitués de feuilles de papier ou de carton, de mats de verre ou de tout matériau connu de l'homme du métier comme pouvant servir de matériau de parement.The facing materials 1 and 3 can be made sheets of paper or cardboard, glass mats or any material known to those skilled in the art as being capable of serve as facing material.

    Après la sortie de la préforme 5 de sous la plaque de formage (en anglais « forming plate ») 4 ou de sous le dispositif équivalent utilisé dans la ligne de production (par exemple, un rouleau de formage appelé en anglais « master roll »), une latte 6 est introduite entre la préforme 5 et le début du tapis transporteur 7. La distance entre la forming plate 4 et le début du tapis transporteur 7 est telle que la préforme 5 n'ait pas encore eu le temps de durcir sensiblement et présente encore une grande plasticité. L'introduction est effectuée de telle manière que l'axe longitudinal de la latte 6 soit sensiblement perpendiculaire au sens de déplacement du tapis transporteur 7.After the exit of the preform 5 from under the plate forming (in English "forming plate") 4 or under the equivalent device used in the production line (for example, a forming roll called in English "Master roll"), a slat 6 is inserted between the preform 5 and the start of the conveyor belt 7. The distance between forming plate 4 and start of mat conveyor 7 is such that the preform 5 does not have still had time to harden noticeably and present still great plasticity. The introduction is performed in such a way that the longitudinal axis of the batten 6 is substantially perpendicular to the direction of moving the conveyor belt 7.

    La latte 6 est ensuite entraínée par le tapis transporteur 7, tout comme la préforme 5. La prise hydraulique et le durcissement de la composition de plâtre 2 s'effectuent ensuite tout au long du déplacement de la préforme 5, désigné par les flèches A.The slat 6 is then driven by the carpet conveyor 7, just like the preform 5. The socket hydraulic and hardening the composition of plaster 2 is then carried out throughout the movement of preform 5, designated by arrows A.

    De préférence, le retrait de la latte 6 a lieu avant la coupe de la préforme 5.Preferably, the removal of the slat 6 takes place before cutting the preform 5.

    Ainsi, après un certain temps, auquel correspond une distance parcourue par la préforme 5 sur le tapis transporteur 7, que l'homme du métier sait déterminer en fonction de la vitesse de déplacement du tapis transporteur 7 et du temps de prise de la composition de plâtre 2, la dureté de la préforme 5 est suffisante pour que l'on puisse retirer la latte 6 sans déformer la préforme 5 et sans que la composition de plâtre 2 vienne remplir l'espace ou amincissement 8 (figure 7) laissé par le retrait de la latte 6.So after a while, which corresponds to a distance traveled by preform 5 on the mat transporter 7, which a person skilled in the art knows how to determine depending on the speed of movement of the belt carrier 7 and the setting time of the composition of plaster 2, the hardness of the preform 5 is sufficient to that the slat 6 can be removed without deforming the preform 5 and without the plaster composition 2 coming fill the space or thinning 8 (figure 7) left by removing the batten 6.

    Le retrait de la latte 6 peut être effectué suivant toute manière appropriée. Par exemple, lorsque la longueur de la latte 6 est supérieure à la largeur de la préforme 5, la latte 6 fait saillie par rapport à la préforme 5, et on peut alors la retirer rapidement selon une direction sensiblement perpendiculaire à la direction de déplacement du tapis transporteur 7 et en s'éloignant de ce dernier. Cette action de retrait est illustrée par la flèche B sur la figure 6.The removal of the slat 6 can be carried out according to any suitable way. For example, when the length of the slat 6 is greater than the width of the preform 5, the slat 6 projects from the preform 5, and can then be removed quickly according to a direction substantially perpendicular to the direction movement of the conveyor belt 7 and away of the last. This withdrawal action is illustrated by arrow B in Figure 6.

    Le retrait de la latte 6 peut aussi se produire par la chute de cette latte 6 dans l'espace situé entre deux rouleaux constitutifs du système de tapis transporteurs qui, en général, n'est pas continu tout au long de la ligne de production, mais est formé par plusieurs tapis entraínés par des rouleaux entre lesquels il existe des espaces libres.The removal of the slat 6 can also occur by the fall of this slat 6 in the space between two rollers of the conveyor belt system which, in general, is not continuous throughout the production line, but is formed by several mats driven by rollers between which there are free spaces.

    Après le retrait de la latte 6, la préforme 5 continue à se déplacer, toujours entraínée par le tapis transporteur 7 et le durcissement de la composition de plâtre 2 se poursuit.After removing the slat 6, the preform 5 continues to move, still driven by the carpet carrier 7 and curing the composition of plaster 2 continues.

    Comme on peut le voir sur la figure 7, lorsque l'amincissement 8 arrive au niveau du dispositif de coupe constitué généralement par un rouleau muni d'un couteau 9, celui-ci se met en route et coupe la préforme 5. On obtient ainsi une plaque 9bis, visible sur la figure 8, dont la longueur est définie par la distance parcourue par le tapis transporteur entre deux opérations de coupe, c'est-à-dire, selon l'invention, par la distance parcourue par le tapis transporteur entre deux amincissements consécutifs 8. Cette plaque 9bis présente donc deux bords transversaux amincis 10.As can be seen in Figure 7, when thinning 8 occurs at the cutting device generally consisting of a roller fitted with a knife 9, it starts and cuts the preform 5. We thus obtains a plate 9bis, visible in FIG. 8, whose length is defined by the distance traveled by the conveyor belt between two cutting operations, that is to say, according to the invention, by the distance traveled by the conveyor belt between two consecutive thinning 8. This plate 9bis presents therefore two thinned transverse edges 10.

    De préférence, le dispositif de coupe est réglé de manière à ce que le couteau 9 coupe la préforme 5 environ au milieu de l'amincissement 8.Preferably, the cutting device is adjusted by so that the knife 9 cuts the preform 5 approximately in the middle of thinning 8.

    La taille de chaque amincissement 8 dépend des dimensions de la latte 6. Cette dernière est en général un parallélépipède dont l'épaisseur est généralement comprise entre 0,5 et 4 mm, de préférence entre 1,5 et 4 mm. Sa largeur est généralement comprise entre 5 et 20 cm et sa longueur est au moins environ égale à la largeur de la préforme 5 (éventuellement diminuée de la largeur des bandes longitudinales « tape » présentes le cas échéant), mais en général supérieure afin de pouvoir la saisir pour la retirer de dessous la préforme 5. En outre, il est souhaitable que la latte 6 soit d'une longueur supérieure à la largeur de la préforme 5, de façon à faire saillie par rapport à celui-ci, ce qui peut faciliter son retrait.The size of each thinning 8 depends on the slat dimensions 6. The latter is generally a parallelepiped whose thickness is generally between 0.5 and 4 mm, preferably between 1.5 and 4 mm. Its width is generally between 5 and 20 cm and its length is at least about equal to the width of preform 5 (possibly reduced by the width of the longitudinal "tape" bands present if applicable), but generally higher in order to be able to enter it for remove it from under the preform 5. Furthermore, it is desirable that the slat 6 is of a longer length to the width of the preform 5, so as to project relative to it, which can facilitate its withdrawal.

    Le matériau constitutif des lattes 6 importe peu, du moment qu'il permet à ces lattes de résister au poids de l'épaisseur de préforme 5 qui se trouve au-dessus de chaque latte 6. Ce peut donc être un matériau plastique, du bois, du métal, etc. présentant une bonne résistance à l'usure et une stabilité dans le temps.The material of the slats 6 does not matter, from the as long as it allows these slats to resist the weight of the preform thickness 5 which is above each slat 6. It can therefore be a plastic material, wood, metal, etc. having good resistance to wear and stability over time.

    De préférence, le procédé qui vient d'être décrit vient en complément d'un procédé connu de fabrication de plaques de plâtre ayant deux bords longitudinaux amincis. Ce dernier prévoit généralement la mise en place d'une bande, généralement en matière plastique, appelée généralement «tape», sur chaque côté longitudinal du tapis transporteur 7. Un tel procédé est décrit par exemple dans la demande de brevet européen n° 482 810.Preferably, the process which has just been described complements a known process for manufacturing plasterboard with two thinned longitudinal edges. The latter generally provides for the establishment of a strip, usually made of plastic, called generally "tape", on each longitudinal side of the conveyor belt 7. Such a process is described by example in European patent application No. 482,810.

    Ceci permet donc d'obtenir une plaque à base de liant hydraulique 11 telle qu'illustrée sur la figure 9, ayant, outre ses deux bords transversaux amincis 10, deux bords longitudinaux 25 amincis, soit au total quatre bords amincis. This therefore makes it possible to obtain a binder-based plate. hydraulic 11 as illustrated in FIG. 9, having, in addition to its two thinned transverse edges 10, two edges longitudinal 25 thinned, making a total of four edges thinned.

    Il va de soi que si la fréquence des opérations de coupe est le double de celle de l'introduction des lattes 6, on obtient des plaques ayant 3 bords amincis (deux longitudinaux et un transversal).It goes without saying that if the frequency of operations of cut is double that of the introduction of the slats 6, we obtain plates having 3 thinned edges (two longitudinal and a transverse).

    La longueur des plaques de plâtre fabriquées dépend bien entendu de la vitesse de déplacement du tapis transporteur et de la fréquence des opérations de coupe.The length of the plasterboard produced depends of course the speed of movement of the mat carrier and the frequency of cutting operations.

    La fréquence des opérations de coupe est généralement directement liée à la fréquence d'introduction des lattes, car on cherche en général à obtenir des plaques ayant deux bords transversaux amincis.The frequency of cutting operations is generally directly related to the frequency of introduction of slats, because we generally seek to obtain plates having two thinned transverse edges.

    Ce procédé est très souple, car, pour changer la longueur des plaques fabriquées, il suffit simplement de modifier la fréquence d'introduction des lattes.This process is very flexible because, to change the length of the plates produced, simply change the frequency of insertion of the slats.

    Le procédé qui vient d'être décrit utilise avantageusement l'appareil selon l'invention pour réaliser une empreinte dans la préforme destinée à être coupée pour donner les plaques à base de liant hydraulique.The process which has just been described uses advantageously the apparatus according to the invention for make an impression in the preform intended to be cut to give binder-based plates hydraulic.

    Ainsi, selon l'invention et comme cela ressort de la figure 10, avant d'introduire la latte 6, on réalise au moyen d'un appareil selon l'invention, une empreinte 12 dans la préforme 5 à l'opposé de l'endroit où il est prévu d'introduire la latte 6, ou une empreinte 12bis à l'endroit où il est prévu d'introduire cette latte 6.Thus, according to the invention and as is apparent from the Figure 10, before introducing the slat 6, we realize at by means of an apparatus according to the invention, an imprint 12 in preform 5 opposite of where it is planned to introduce batten 6, or a 12bis footprint at the place where it is planned to introduce this slat 6.

    Ceci permet de compenser les surépaisseurs localisées pouvant éventuellement se former dans la préforme 5, en raison d'un déplacement de matière, lorsque la latte 6 a une dimension importante.This compensates for localized excess thicknesses possibly forming in the preform 5, due to a displacement of material, when the slat 6 has an important dimension.

    On peut également prévoir la présence d'un lisseur 4bis de type classique (visible sur la figure 6) en aval de l'endroit où est introduite la latte 6.We can also predict the presence of a straightener 4bis of classic type (visible on figure 6) downstream from where the batten 6 is inserted.

    LIGNE DE PRODUCTION DE PLAQUES A BASE DE LIANT HYDRAULIQUEBINDER-BASED PLATE PRODUCTION LINE HYDRAULIC

    L'appareil selon l'invention peut servir, dans une ligne de production de plaques à base de liant hydraulique à partir d'une préforme 5 comprenant un matériau de parement 1 recouvert d'une composition de liant hydraulique 2 et supportée par un tapis transporteur 7.The apparatus according to the invention can be used, in a binder-based plate production line hydraulic from a preform 5 comprising a facing material 1 covered with a composition of hydraulic binder 2 and supported by a belt carrier 7.

    Afin que l'appareil selon l'invention puisse être utilisé de manière optimale sur la ligne de production de plaques à base de liant hydraulique, la distance entre les courroies de transmission de cet appareil étant au moins égale à la largeur de la préforme 5. Ainsi, ces courroies et les poulies se situent de chaque côté longitudinal de la préforme.So that the apparatus according to the invention can be used optimally on the production line of hydraulic binder plates, the distance between the transmission belts of this device being at less equal to the width of the preform 5. Thus, these belts and pulleys are on each side longitudinal of the preform.

    En outre, l'appareil selon l'invention est disposé de manière appropriée pour que, lorsque ses courroies de transmission tournent, son moyen allongé crée une empreinte dans la préforme 5.In addition, the apparatus according to the invention is arranged to appropriately so that when its belts transmission rotate, its elongated means creates a imprint in the preform 5.

    L'appareil selon l'invention peut être au-dessus de la préforme 5, dans ce cas, il crée l'empreinte 12 ou sous la préforme 5, auquel cas il crée l'empreinte 12bis.The apparatus according to the invention can be above the preform 5, in this case, it creates the imprint 12 or under preform 5, in which case it creates the imprint 12bis.

    Pour des raisons pratiques, on préfère que l'appareil selon l'invention se trouve au-dessus de la préforme 5.For practical reasons, we prefer that the apparatus according to the invention is located above the preform 5.

    Bien entendu, on pourrait prévoir deux (ou plus) appareils selon l'invention, l'un étant situé au-dessus et l'autre au-dessous de la préforme, de manière à créer respectivement, une empreinte 12 sur le dessus de la préforme 5 et une empreinte 12bis sur le dessous de la préforme 5 (voir Figure 10), le dessous de la préforme 5 étant le côté de cette préforme 5 qui repose sur le tapis transporteur 7.Of course, we could plan two (or more) apparatus according to the invention, one being located above and the other below the preform, so as to create respectively, an imprint 12 on the top of the preform 5 and a 12bis imprint on the underside of the preform 5 (see Figure 10), the underside of preform 5 being the side of this preform 5 which rests on the mat carrier 7.

    Le dispositif de coupe peut être réglé pour couper la préforme au niveau d'une empreinte 12.The cutting device can be adjusted to cut the preform at the level of an imprint 12.

    Si l'on a affaire à une empreinte 12bis réalisée sur le dessous de la préforme, le dispositif de coupe peut être réglé pour couper la préforme à l'opposé de l'endroit où a été réalisée cette empreinte 12bis.If we are dealing with a 12bis impression made on the underside of the preform, the cutting device can be set to cut the preform away from the place where this 12bis print was made.

    De préférence, la ligne de production de plaques à base de liant hydraulique est une ligne de production de plaques à bords aminicis. Une telle ligne va maintenant être décrite en détail en se référant aux figures 6 à 15. Ensuite, sera décrite la manière dont on utilise l'appareil selon l'invention dans cette ligne.Preferably, the plate production line for hydraulic binder base is a production line of plates with aminished edges. Such a line now goes be described in detail with reference to Figures 6 to 15. Then, we will describe how we use the apparatus according to the invention in this line.

    Sur la figure 11 est représentée une partie d'une ligne de production de plaques à base de liant hydraulique.In Figure 11 is shown part of a binder-based plate production line hydraulic.

    On peut donc voir un magasin à lattes 20 formé d'une surface rectangulaire horizontale 21 à partir des coins de laquelle s'élèvent verticalement et parallèlement, quatre pièces angulaires 22, en forme de cornière et tournées les unes vers les autres, de façon à encadrer une pile de lattes 23.We can therefore see a slat store 20 formed of a horizontal rectangular surface 21 from the corners from which rise vertically and parallel, four angular pieces 22, in the form of an angle iron and facing each other, so as to frame a stack of slats 23.

    Les dimensions de ce magasin à lattes 20 sont telles qu'il puisse stocker un nombre élevé de lattes 23 (voir aussi figures 12 et 13).The dimensions of this slatted magazine 20 are such that it can store a high number of slats 23 (see also Figures 12 and 13).

    La surface horizontale 21 du magasin à lattes 20 est soutenue par des pieds 24 .The horizontal surface 21 of the slat magazine 20 is supported by feet 24.

    Au niveau de la première latte 23, c'est-à-dire celle située tout en bas de la pile, sont disposés parallèlement deux vérins 26, qui sont orientés de manière à extraire la première latte 23 de la pile en la poussant et en la faisant glisser vers un plan incliné 27 constitué d'une surface inclinée 28 vers le bas et d'un rebord 29 à sa partie inférieure pour retenir la latte qui vient d'être extraite et la guider ultérieurement .At the level of the first batten 23, that is to say that located at the bottom of the stack, are arranged in parallel two cylinders 26, which are oriented so as to extract the first batten 23 from the stack by pushing and dragging it to an incline 27 consisting of a downwardly inclined surface 28 and a rim 29 at its lower part to retain the slat which has just been extracted and guide it later.

    Au niveau du côté transversal 30 du plan incliné 27, c'est-à-dire le côté opposé au tapis transporteur 7, un vérin 31 est disposé parallèlement à l'axe longitudinal du plan incliné 27, de manière à ce que l'actionnement de ce vérin 31 puisse donner une impulsion à la latte qui vient d'être extraite du magasin à lattes 20. La latte ainsi propulsée peut alors se déplacer en glissant parallèlement à l'axe longitudinal du plan incliné 27, dont le rebord 29 la guide, vers un deuxième plan incliné 32 qui prolonge le premier plan incliné 27, du côté transversal opposé au côté 30. Ce second plan incliné 32 est également constitué d'une surface inclinée 33 munie d'un rebord 34 à sa partie inférieure. Il comprend en outre une butée 35 à son extrémité opposée au vérin 31, cette butée étant généralement constituée d'un amortisseur pneumatique et étant destinée à mettre un terme au déplacement de la latte propulsée par le vérin 31.At the transverse side 30 of the inclined plane 27, that is to say the side opposite to the conveyor belt 7, a cylinder 31 is arranged parallel to the longitudinal axis of the inclined plane 27, so that the actuation of this jack 31 can give an impulse to the slat which has just been extracted from the slat store 20. The slat thus propelled can then move by sliding parallel to the longitudinal axis of the inclined plane 27, whose rim 29 guides it, towards a second inclined plane 32 which extends the first inclined plane 27, on the side transverse opposite to side 30. This second inclined plane 32 also consists of an inclined surface 33 provided a rim 34 at its lower part. It includes in addition to a stop 35 at its end opposite to the jack 31, this stop being generally made up of a pneumatic shock absorber and being intended to put a end of the movement of the slat propelled by the jack 31.

    Le rebord 34 est muni d'ouvertures 36 en face desquelles sont disposés deux vérins 37 orientés de manière à propulser la latte positionnée sur le deuxième plan incliné 32 vers le haut de la surface inclinée 33.The rim 34 is provided with openings 36 opposite which are arranged two cylinders 37 oriented so as to propel the batten positioned on the second inclined plane 32 upwards of the inclined surface 33.

    Le premier plan incliné 27 et le deuxième plan incliné 32 sont soutenus par des pieds, respectivement, 38 et 39.The first inclined plane 27 and the second plane tilted 32 are supported by feet, respectively, 38 and 39.

    Selon une variante visible sur la figure 14, une surface plane 40 est prévue parallèlement à la surface 23, entre cette dernière et le premier plan incliné 27 pour supporter horizontalement une latte extraite du magasin à lattes 20 avant sa descente sur la surface inclinée 28 du premier plan incliné 27.According to a variant visible in FIG. 14, a flat surface 40 is provided parallel to the surface 23, between the latter and the first inclined plane 27 to horizontally support a slat extracted from the slatted magazine 20 before its descent on the surface inclined 28 of the first inclined plane 27.

    Ainsi, comme on peut le voir sur la figure 15, la hauteur des pieds 24, 35 et 36 est choisie de telle sorte qu'une latte positionnée sur le deuxième plan incliné 32 se situe à une hauteur inférieure à celle de la préforme 5.Thus, as can be seen in Figure 15, the height of feet 24, 35 and 36 is chosen so a slat positioned on the second inclined plane 32 is at a height lower than that of the preform 5.

    En général :

    • l'axe longitudinal du rebord 34 du deuxième plan incliné 32 est perpendiculaire à l'axe longitudinal du tapis transporteur ;
    • les moyens 32,33,34,35 pour supporter la latte déplacée se situent en face du début du tapis transporteur 7 ; et
    • la surface inclinée 33 du deuxième plan incliné 32 est adjacente au tapis transporteur 7.
    In general :
    • the longitudinal axis of the rim 34 of the second inclined plane 32 is perpendicular to the longitudinal axis of the conveyor belt;
    • the means 32, 33, 34, 35 for supporting the displaced batten are located opposite the start of the conveyor belt 7; and
    • the inclined surface 33 of the second inclined plane 32 is adjacent to the conveyor belt 7.

    La longueur du deuxième plan incliné 32 est au moins égale à celle de la latte 23, c'est-à-dire au moins égale, et de préférence supérieure, à la largeur de la préforme 5. The length of the second inclined plane 32 is at least equal to that of lath 23, i.e. at least equal to, and preferably greater than, the width of the preform 5.

    De cette manière, comme on peut le comprendre en se référant à la figure 10, lorsque les vérins 37 sont actionnés, la latte se trouvant sur le deuxième plan incliné 32 est poussée vers le haut de la surface inclinée 33, c'est-à-dire vers le tapis transporteur 7 et la préforme 5, et elle se trouve coincée entre ces dernières et entraínée par elles.In this way, as can be understood by referring to FIG. 10, when the jacks 37 are actuated, the slat being in the second plane tilted 32 is pushed up from the surface inclined 33, that is to say towards the conveyor belt 7 and preform 5, and it is wedged between these last and driven by them.

    La différence entre la longueur de la latte et la largeur de la préforme 5 permet de saisir la latte et de la retirer une fois la composition de plâtre durcie.The difference between the length of the slat and the width of the preform 5 makes it possible to grasp the batten and remove it once the plaster composition has hardened.

    La ligne de production selon l'invention comprend généralement des moyens électroniques qui commandent son fonctionnement et permettent, le cas échéant, d'asservir entre elles les mises en oeuvre de différentes opérations.The production line according to the invention comprises usually electronic means that control its function and allow, if necessary, to enslave between them the implementations of different operations.

    Ces moyens électroniques prévoient qu'après l'introduction d'une latte sous la préforme par l'actionnement des vérins 27, le vérin 31 est actionné pour introduire une nouvelle latte sur le deuxième plan incliné 32, puis les vérins 26 sont actionnés pour introduire une autre latte sur le premier plan incliné 27, et ainsi de suite. Les moyens électroniques peuvent faire varier la fréquence de ces opérations pour réduire ou accroítre la longueur des plaques de plâtre à bords amincis produites.These electronic means provide that after the introduction of a slat under the preform by actuation of the jacks 27, the jack 31 is actuated to introduce a new batten on the second plane inclined 32, then the cylinders 26 are actuated to introduce another slat on the first inclined plane 27, and so on. Electronic means can vary the frequency of these operations to reduce or increase the length of the plasterboard with edges thinnings produced.

    La figure 16 représente une partie d'une ligne de production réalisée selon un mode de réalisation préféré de l'invention.Figure 16 shows part of a line of production carried out according to a preferred embodiment of the invention.

    On peut voir sur cette figure que la ligne de production comprend une variante de l'appareil selon l'inventionWe can see in this figure that the line of production includes a variant of the device according to the invention

    Cet appareil, que l'on voit de profil sur la figure 16, comprend quatre premières roues dentées 201,202,203,204 supportées par un bâti 205 et entourées par une chaíne 206 constituée par des maillons, dont certains, les maillons 207 supportent chacun 2 fils, de la manière indiquée en relation avec la figure 2. This device, which is seen in profile in the figure 16, includes first four sprockets 201,202,203,204 supported by a frame 205 and surrounded by a chain 206 consisting of links, including some, the links 207 each support 2 wires, of the manner indicated in relation to FIG. 2.

    Cet appareil est symétrique par rapport à un plan vertical aligné sur la direction de déplacement de la préforme 5. Ainsi, les fils maintenus par les maillons 207 s'étendent transversalement par rapport à la préforme 5 jusqu'à une seconde chaíne, identique à la chaíne 206, et qui entoure des secondes roues dentées identiques aux premières roues dentées 201,202,203,204.This device is symmetrical about a plane vertical aligned with the direction of travel of the preform 5. Thus, the wires held by the links 207 extend transversely to the preform 5 up to a second chain, identical to chain 206, and which surrounds second gear wheels identical to first gear wheels 201,202,203,204.

    L'appareil est muni d'un moteur électrique 209 entraínant en rotation par l'intermédiaire d'une courroie 211 l'arbre 210 sur lequel sont montées la roue 203 et sa roue symétrique. La rotation de ces roues entraíne la celle de la chaíne 206 dans le sens indiqué par la flèche D.The device is fitted with an electric motor 209 driving in rotation via a belt 211 the shaft 210 on which the wheel 203 and its symmetrical wheel. The rotation of these wheels causes the that of chain 206 in the direction indicated by the arrow D.

    Cette préforme 5 est obtenue de façon connue par introduction de la pâte de liant hydraulique selon la flèche E entre le premier matériau de parement 2 et le second matériau de parement 3 et passage de l'ensemble entre les plateaux supérieur 214 et inférieur 215 de formage de l'appareil.This preform 5 is obtained in a known manner by introduction of the hydraulic binder paste according to the arrow E between the first facing material 2 and the second facing material 3 and passage of the assembly between the upper 214 and lower 215 shelves of forming the device.

    La distance entre les roues dentées 201,202,203,204 et leurs roues symétriques est au moins égale à celle de la préforme 5 de sorte que ces roues dentées ne touchent pas cette préforme 5.The distance between the gears 201,202,203,204 and their symmetrical wheels is at least equal to that of preform 5 so that these gear wheels do not touch not this preform 5.

    L'appareil selon l'invention est fixé à une hauteur appropriée pour que, lors du fonctionnement de la ligne de production, le déplacement de la chaíne 206 entraínant celui des fils reliés au maillons 207, ces fils passent dans la forming plate, c'est-à-dire entre les plateaux 214 et 215 et font saillie vers le bas par rapport au plateau supérieur 214. L'espace occupé par ces fils entre le plateau supérieur 114 et le second matériau de parement 3 se traduit alors à cet endroit par un amincissement de l'épaisseur de la préforme 5.The apparatus according to the invention is fixed at a height appropriate so that when the line is in operation of production, the displacement of chain 206 resulting that of the wires connected to the links 207, these wires pass in the forming plate, that is to say between the plates 214 and 215 and protrude downward relative to the upper plate 214. The space occupied by these wires enters the upper plate 114 and the second material of facing 3 then translates into this place by a thinning of the thickness of the preform 5.

    Il va de soi que le fonctionnement du moteur est réglé de manière à ce que la chaíne 206 se déplace à la même vitesse que la préforme 5 lorsque les fils passent entre les plateaux 214 et 215. Les fils accompagnent alors la préforme 5 sur quelques centimètres et, au moment où il se séparent d'elle pour remonter en tournant autour de la roue 204, ils laissent une empreinte dans la partie supérieure de la préforme 5.It goes without saying that the operation of the engine is adjusted so that chain 206 moves to the same speed as preform 5 when the wires pass between trays 214 and 215. The wires accompany then the preform 5 over a few centimeters and, at moment when they separate from it to go up by turning around the wheel 204, they leave an imprint in the upper part of the preform 5.

    Etant donné qu'il est aisé de faire varier la vitesse de déplacement de la chaíne 206 en agissant sur le fonctionnement du moteur, on peut facilement modifier l'espacement entre deux empreintes et par conséquent la longueur des plaques.Since it is easy to vary the speed movement of the chain 206 by acting on the engine operation, you can easily change the spacing between two footprints and therefore the length of plates.

    Selon un mode de réalisation encore plus avantageux de l'invention, l'appareil est destiné à coopérer avec le dispositif d'introduction des lattes sous la préforme constitué par les moyens 20 à 22 et 24 à 39 décrits ci-dessus en relation avec les figures 11 à 15.According to an even more advantageous embodiment of the invention, the device is intended to cooperate with the slat insertion device under the preform constituted by means 20 to 22 and 24 to 39 described above in relation to Figures 11 to 15.

    La chaíne 206 est alors pourvue d'un doigt de poussée 216 qui est fixé du côté extérieur de la chaíne 206, c'est-à-dire celui opposé à celui où se situent les fils. Ce doigt de poussée 216 a pour fonction de heurter et déplacer le poussoir 217 lors de la rotation de la chaíne 206. Il peut être fixé sur un maillon de la chaíne 206 par exemple à la place d'un axe porteur de rouleau de ce maillon.The chain 206 is then provided with a pushing finger 216 which is fixed on the outside of the chain 206, that is to say the one opposite to where the wires are located. This push finger 216 has the function of striking and move the pusher 217 during the rotation of the chain 206. It can be attached to a link in the chain 206 for example in place of a roller carrying axis of this link.

    Sur la figure 16, on peut voir la surface inclinée 33 du dispositif d'introduction des lattes (figure 15), ainsi que son rebord 34 et une latte 23 reposant sur la surface incliné 33.In Figure 16, we can see the inclined surface 33 the slat insertion device (Figure 15), as well as its rim 34 and a slat 23 resting on the inclined surface 33.

    Dans ce mode de réalisation, les vérins 37 (figure 15) sont remplacés par des poussoirs 217 qui peuvent prendre place dans les ouvertures 36 du rebord 34 (figure 11) .In this embodiment, the jacks 37 (FIG. 15) are replaced by push-buttons 217 which can take place in the openings 36 of the rim 34 (figure 11).

    La forme d'un poussoir 217 est plus visible sur les figures 17 et 18. Ce poussoir comprend une partie allongée en forme de règle 218 munie à une extrémité d'une partie en forme de triangle rectangle 219 traversée par un axe 220 qui dépasse des deux côtés de la partie 219. Le sommet du triange rectangle est coupé pour donner une face 221 parallèle à l'axe de la partie en forme de règle 218. The shape of a push-button 217 is more visible on the Figures 17 and 18. This pusher includes a part elongated in the form of a ruler 218 provided at one end of a part in the shape of a right-angled triangle 219 crossed by an axis 220 which protrudes on both sides of the part 219. The top of the right triangle is cut to give a face 221 parallel to the axis of the shaped part rule 218.

    En revenant à la figure 16, on voit que le poussoir 217 peut occuper deux positions. Dans sa position initiale (représentée en pointillés), il repose sur le plateau 215 et est tourné vers le sol, de sorte que son axe 220 soit disposé transversalement par rapport à la préforme 5 et sa face 221 se trouve à la partie inférieure de la surface inclinée 33, dans l'ouverture 36 du rebord 34.Returning to Figure 16, we see that the pusher 217 can occupy two positions. In its position initial (shown in dotted lines), it rests on the tray 215 and is facing the ground, so that its axis 220 is arranged transversely to the preform 5 and its face 221 is at the part lower of the inclined surface 33, in the opening 36 ledge 34.

    Lorque le poussoir 217 est heurté par le doigt de poussée 216, il se déplace en remontant la surface inclinée 33. Ce faisant il pousse la latte 23 qui vient alors s'insérer entre la préforme 5 et le tapis transporteur 7.When pusher 217 is struck by the finger of thrust 216, it moves up the surface inclined 33. In doing so it pushes the slat 23 which comes then fit between preform 5 and the mat carrier 7.

    Le doigt de poussée 216 sur la chaíne 206 se situe à une distance, par rapport aux fils maintenus par les maillons 207, telle que la latte 23 soit introduite sensiblement à l'opposé de l'endroit de la préforme 5 où lesdits fils viennent de former l'empreinte. Ceci a pour conséquence que le déplacement de matière provoqué par l'introduction de la latte 23 est au moins partiellement compensé par l'empreinte. Il s'ensuit que la préforme ne présente pas de bosse à l'endroit opposé à celui où la latte 23 a été introduite. Ceci veut dire qu'après retrait de cette latte 23, à l'amincissement obtenu sur le dessous de la préforme 5 ne correspond aucune bosse sur le dessus de la préforme 5.The push finger 216 on the chain 206 is located a distance from the wires held by the links 207, such that the slat 23 is introduced substantially opposite the location of the preform 5 where said wires have just formed the imprint. This has consequence that the displacement of matter caused by the introduction of the slat 23 is at least partially offset by the footprint. It follows that the preform does not has no bump in the opposite place to where the batten 23 has been introduced. This means that after removal of this slat 23, on the thinning obtained on the underside of preform 5 does not correspond to any bump on top of the preform 5.

    Le poussoir 217 déplacé par le doigt de poussée 216 arrive dans une deuxième position en terminant sa course dans un réceptacle, visible sur les figures 17 et 18, et qui est formé par deux pièces arquées 222 fixées par leurs extrémités supérieures de part et d'autre de l'extrémité extérieure 225 de la tige 223 d'un vérin 224. Chaque côté de l'axe 220 du poussoir 217 est reçu dans une pièce arquée 222 et les partie 219 et 218 du poussoir 217 peuvant s'insérer dans l'espace formé entre les pièces arquées 222, sous la tige 223 du vérin 224.The pusher 217 moved by the pushing finger 216 arrives in a second position by finishing its race in a receptacle, visible in FIGS. 17 and 18, and which is formed by two arcuate pieces 222 fixed by their upper ends on either side of the outer end 225 of the rod 223 of a jack 224. Each side of the axis 220 of the pusher 217 is received in an arcuate piece 222 and the parts 219 and 218 of the push button 217 can be inserted in the space formed between the arcuate parts 222, under the rod 223 of the jack 224.

    Sur les figures 17 et 18, la tige 223 du vérin 224 est sortie, pour recevoir le poussoir 217. In FIGS. 17 and 18, the rod 223 of the jack 224 is out, to receive the pusher 217.

    Cependant, comme cela est visible sur la figure 16, en faisant rentrer la tige 223 du vérin 224 dans le corps de ce dernier, on ramène le poussoir 217 au dessus de sa position initiale, puis en ressortant à nouveau la tige 223 du vérin 224, le poussoir 217 se sépare des pièces arquées 222 et retombe sur le plateau 215. Il se retrouve alors dans sa position initiale avec sa face 221 à l'intérieur de l'ouverture 36.However, as shown in Figure 16, by bringing the rod 223 of the jack 224 into the body of the latter, the pusher 217 is brought back above its initial position, then pulling out the rod again 223 of the jack 224, the pusher 217 separates from the parts arched 222 and falls back onto plateau 215. It is found then in its initial position with its face 221 at inside the opening 36.

    Il va de soi que les dimensions du poussoir 217 sont choisies de manière à ce qu'il reste au-dessus de la surface inclinée 33.It goes without saying that the dimensions of the pusher 217 are chosen so that it stays above the inclined surface 33.

    Le vérin 224 peut être fixé au bâti 205 de l'appareil, son emplacement et ses dimensions étant déterminées en fonction du poussoir 217 avec lequel il doit coopérer. Le vérin 224 a donc pour fonction de ramener le poussoir 217 à sa position initiale. Sa tige 223 est normalement en position sortie, dans l'attente de recevoir le poussoir 217.The jack 224 can be fixed to the frame 205 of the device, its location and dimensions being determined according to the push button 217 with which it must cooperate. The actuator 224 therefore has the function of return the pusher 217 to its initial position. Its stem 223 is normally in the extended position, pending receive button 217.

    Bien entendu, l'ensemble de l'appareil est conçu symétriquement, chacune des chaínes étant munie d'un doigt de poussée 216 coopérant chacun avec un vérin 224, et ce, de manière synchronisée.Of course, the whole device is designed symmetrically, each of the chains being provided with a push finger 216 each cooperating with a jack 224, and this, in a synchronized manner.

    Les moyens électroniques et pneumatiques (ou éventuellement hydrauliques) de la ligne de production pilotent le fonctionnement de l'appareil de réalisation des empreintes et du dispositif d'introduction des lattes sous la préforme constitué par les moyens 20 à 22 et 24 à 39 décrits ci-dessus, afin qu'une fois le poussoir 117 ramené à sa position initiale et la tige 223 du vérin 224 à nouveau sortie, une nouvelle latte 23 puisse être glissée sur le plan incliné 33.Electronic and pneumatic means (or possibly hydraulic) of the production line control the operation of the production device footprints and slat insertion device under the preform constituted by means 20 to 22 and 24 to 39 described above, so that once the pusher 117 returned to its initial position and the rod 223 of the jack 224 again, a new slat 23 can be slid on the inclined plane 33.

    Il peut être prévu que l'actionnement du vérin 224 soit déterminé par la détection par exemple, au moyen d'un capteur photoélectrique, du passage d'un ergot ou doigt fixé à un endroit approprié sur la chaíne 206, par exemple de la même manière que le doigt de poussée 216, cet ergot jouant le rôle de drapeau, c'est-à-dire que lorsqu'il est détecté par le capteur photoélectrique disposé à un endroit approprié de la ligne de production ou de l'appareil, les moyens électroniques commandent le retour de de la tige 223 du vérin 224 dans le corps du vérin, ce retour entraínant, comme expliqué ci-dessus, le retour du poussoir 217 à sa position initiale. Des capteurs de fin de course du vérin 224, peuvent ensuite, une fois la tige 223 rentrée, entraíner un nouvel actionnement du vérin 224 pour sortir sa tige 223, ce qui fait tomber le poussoir 217 dans sa position initiale.It can be provided that the actuation of the jack 224 either determined by detection for example, using a photoelectric sensor, the passage of a lug or finger fixed at an appropriate place on the chain 206, by example in the same way as the push finger 216, this lug playing the role of flag, that is to say that when detected by the photoelectric sensor arranged at a suitable location on the production line or of the device, the electronic means control the return of the rod 223 of the jack 224 in the body of the cylinder, this entraining return, as explained above, the return of the pusher 217 to its initial position. of the end-of-travel sensors for actuator 224, can then once the rod 223 retracted, cause a new actuation of the jack 224 to take out its rod 223, which causes the pusher 217 to fall into its initial position.

    Le bâti 205 de l'appareil selon l'invention peut, comme cela ressort de la figure 16, être solidaire des plateaux 214 et 215. Il s'ensuit que l'appareil selon l'invention peut être utilisé à la place d'une forming plate ou d'un master roll que l'on utilise classiquement.The frame 205 of the device according to the invention can, as can be seen from figure 16, being in solidarity with trays 214 and 215. It follows that the device according to the invention can be used in place of a forming flat or a master roll that is conventionally used.

    Claims (17)

    Appareil, notamment, pour la réalisation d'une empreinte (12 ou 12bis) dans une préforme (5) à base de liant hydraulique, cet appareil comprenant au moins : un bâti (101) ; deux premières poulies (102,103) supportées à une première extrémité (104) du bâti (101) et deux secondes poulies (105,106) à une seconde extrémité (107) du bâti (101); les premières poulies (102,103) et secondes poulies (105,106) étant dans des plans parallèles ; les poulies en regard l'une (102,103) de l'autre (105,106) étant identiques ; deux courroies de transmission (108,109) entourant respectivement les premières poulies (102,103) et les secondes poulies (105,106); au moins un fil (111) fixé de façon amovible aux courroies (108,109) et s'étendant entre ces courroies (108,109), de telle sorte que son axe longitudinal soit parallèle à l'axe de rotation des poulies (102,103,105,106). Apparatus, in particular, for producing an imprint (12 or 12bis) in a preform (5) based on hydraulic binder, this apparatus comprising at least: a frame (101); two first pulleys (102,103) supported at a first end (104) of the frame (101) and two second pulleys (105,106) at a second end (107) of the frame (101); the first pulleys (102,103) and second pulleys (105,106) being in parallel planes; the pulleys facing one (102,103) of the other (105,106) being identical; two transmission belts (108,109) respectively surrounding the first pulleys (102,103) and the second pulleys (105,106); at least one wire (111) removably attached to the belts (108,109) and extending between these belts (108,109), so that its longitudinal axis is parallel to the axis of rotation of the pulleys (102,103,105,106). Appareil selon la revendication 1, caractérisé en ce qu'il comprend une pluralité de fils (111) disposés parallèlement les uns aux autres, le long des courroies de transmission (108,109) et fixés de manière amovible.Apparatus according to claim 1, characterized in that it comprises a plurality of wires (111) arranged parallel to each other, along the transmission belts (108,109) and detachably fixed. Appareil selon la revendication 1 ou la revendication 2, caractérisé en ce que les poulies (102,103,105,106) sont des roues dentées et les courroies de transmission sont des chaínes. Apparatus according to claim 1 or claim 2, characterized in that the pulleys (102,103,105,106) are toothed wheels and the transmission belts are chains. Appareil selon la revendication 3, caractérisé en ce que les fils (111) sont maintenus aux chaínes au moyen de pièces-supports (113) et d'axes pince-fil (114).Apparatus according to claim 3, characterized in that the wires (111) are held in the chains by means of support pieces (113) and wire clamp pins (114). Appareil selon l'une des revendications 1 à 4, comprenant en outre des moyens d'entraínement en rotation de l'une au moins des poulies (102,103,105,106).Apparatus according to one of claims 1 to 4, further comprising means for driving in rotation of at least one of the pulleys (102,103,105,106). Appareil selon l'une des revendications 1 à 5, comprenant en outre des plateaux supérieur (214) et inférieur (215) de formage, entre lesquels les fils (111) peuvent passer.Apparatus according to one of claims 1 to 5, further comprising upper plates (214) and lower (215) forming, between which the sons (111) can pass. Utilisation d'un appareil selon l'une des revendications 1 à 6 dans une ligne de production de plaques à base de liant hydraulique, en particulier de plâtre.Use of a device according to one of the claims 1 to 6 in a production line plates based on hydraulic binder, particular plaster. Procédé de fabrication d'une plaque à base de liant hydraulique à partir d'une préforme (5) destinée à être coupée, ce procédé comprenant une étape au cours de laquelle on réalise, au moyen d'un appareil selon l'une des revendications 1 à 6, une empreinte (12 ou 12bis) dans la préforme (5).Method for manufacturing a plate based on hydraulic binder from a preform (5) intended to be cut, this process comprising a stage during which one realizes, by means of of an apparatus according to one of claims 1 to 6, an imprint (12 or 12bis) in the preform (5). Procédé selon la revendication 8, caractérisé en ce qu'on coupe la préforme au niveau de l'empreinte (12) ou à l'opposé de l'endroit où a été réalisée l'empreinte (12bis).Method according to claim 8, characterized in that the preform is cut at the level of the impression (12) or opposite the place where the impression (12bis) was made. Procédé selon la revendication 8, comprenant les étapes suivante : 1) on coule sur un matériau de parement (1) supporté par un tapis transporteur (7), une composition de liant hydraulique (2) de façon à obtenir une préforme (5), puis on introduit sous la préforme (5), une latte (6,23) dont la longueur est au moins environ égale à la largeur de la préforme (5); 2) on laisse la prise hydraulique de la composition de liant hydraulique (2) s'effectuer (2) et on retire ladite latte (6,23); 3) on coupe la préforme (5) au niveau de l'amincissement (8) créé par la latte (6,23) ; et dans lequel, avant d'introduire la latte (6,23), on réalise au moyen d'un appareil selon l'une des revendications 1 à 6, une empreinte (12) dans la préforme (5) à l'opposé de l'endroit où il est prévu d'introduire la latte (6,23), ou une empreinte (12bis) à l'endroit où il est prévu d'introduire cette latte (6,23). Method according to claim 8, comprising the following steps: 1) is poured on a facing material (1) supported by a conveyor belt (7), a composition of hydraulic binder (2) so as to obtain a preform (5), then introduced under the preform (5), a batten (6,23) whose length is at least approximately equal to the width of the preform (5); 2) the hydraulic setting of the hydraulic binder composition (2) is allowed to take place (2) and said slat (6,23) is removed; 3) the preform (5) is cut at the thinning (8) created by the slat (6,23); and in which, before introducing the slat (6,23), an impression (12) is made in the preform (5) opposite to that of an apparatus according to one of claims 1 to 6 the place where it is planned to introduce the batten (6,23), or an imprint (12bis) at the place where it is planned to introduce this batten (6,23). Procédé selon l'une des revendications 8 à 10, caractérisé en ce que le liant hydraulique comprend du plâtre.Method according to one of claims 8 to 10, characterized in that the hydraulic binder comprises plaster. Ligne de production de plaques à base de liant hydraulique à partir d'une préforme (5) comprenant un matériau de parement (1) recouvert d'une composition de liant hydraulique (2) et supportée par un tapis transporteur (7), caractérisée en ce qu'elle comprend un appareil selon l'une des revendications 1 à 6, la distance entre les courroies de transmission (108,109,206) de cet appareil étant au moins égale à la largeur de la préforme (5) et cet appareil étant disposé de manière appropriée pour que lorsque ses courroies de transmission (108,109,206) tournent, son ou ses fil(s) (111) crée(nt) une empreinte (12 ou 12bis) dans la préforme (5). Line for producing sheets of hydraulic binder from a preform (5) comprising a facing material (1) covered with a composition of hydraulic binder (2) and supported by a conveyor belt (7), characterized in that it comprises an apparatus according to one of claims 1 to 6, the distance between the transmission belts (108,109,206) of this apparatus being at least equal to the width of the preform (5) and this apparatus being arranged so suitable so that when its transmission belts (108,109,206) rotate, its wire (s) (111) creates (s) an imprint (12 or 12bis) in the preform (5). Ligne de production selon la revendication 12, caractérisée en ce qu'elle comprend, en outre, à proximité du tapis transporteur (7), des moyens (20-22, 24-39) pour introduire, une latte (6,23) dont la longueur est au moins environ égale à la largeur de la préforme (5), entre la préforme (5) et le tapis transporteur (7), au niveau de l'empreinte (12bis) ou à l'opposé de l'endroit de la préforme (5) où a été réalisée l'empreinte (12).Production line according to claim 12, characterized in that it further comprises, near the conveyor belt (7), means (20-22, 24-39) for introducing, a slat (6,23) whose the length is at least approximately equal to the width of the preform (5), between the preform (5) and the conveyor belt (7), at the level of the cavity (12bis) or opposite the place of the preform (5) where the impression (12) was made. Ligne de production selon la revendication 12 ou la revendication 13, caractérisée en ce que ses courroies de transmission (206) comprennent chacune un doigt de poussée (216) et il est prévu des poussoirs (217) reposant sur un plateau (215), ces poussoirs étant aptes à être poussés par les doigts de poussée (216) vers la préforme (5) et à entraíner dans leur déplacement une latte (23), de façon à ce que celle-ci soit introduite sous la préforme (5), ainsi que des moyens pour ramener le poussoir (217) à sa position initiale.Production line according to claim 12 or claim 13, characterized in that its transmission belts (206) each comprise a pushing finger (216) and there are provided pushers (217) resting on a plate (215), these pushers being able to be pushed by the pushing fingers (216) towards the preform (5) and to cause in their movement a slat (23), so that the latter is introduced under the preform (5), thus that means for returning the pusher (217) to its initial position. Ligne de production de plaques à base de liant hydraulique selon l'une des revendications 12 à 14, caractérisée en ce qu'elle comprend en outre des moyens de recouvrement de la composition de liant hydraulique (2) au moyen d'un second matériau de parement (3).Hydraulic binder plate production line according to one of claims 12 to 14, characterized in that it further comprises means for covering the hydraulic binder composition (2) with a second material of facing (3). Ligne de production de plaques à base de liant hydraulique selon l'une des revendications 12 à 15 et comprenant l'appareil selon la revendication 6, cet appareil étant situé au dessus de la préforme (5) et remplaçant une plaque de formage ou un rouleau de formage, les fils (111) passant alors entre lesdits plateaux supérieur (214) et inférieur (215).Binder-based plate production line hydraulics according to one of claims 12 to 15 and comprising the apparatus according to claim 6, this device being located at above the preform (5) and replacing a forming plate or forming roller, the wires (111) then passing between said plates upper (214) and lower (215). Ligne de production selon l'une des revendications 12 à 16, caractérisée en ce que le liant hydraulique comprend du plâtre.Production line according to one of Claims 12 to 16, characterized in that the hydraulic binder comprises plaster.
    EP02290462A 2002-02-26 2002-02-26 Apparatus for embossing a preform made of hydraulic binder and process and production line for manufacturing boards made of hydraulic binder Withdrawn EP1338393A1 (en)

    Priority Applications (32)

    Application Number Priority Date Filing Date Title
    EP02290462A EP1338393A1 (en) 2002-02-26 2002-02-26 Apparatus for embossing a preform made of hydraulic binder and process and production line for manufacturing boards made of hydraulic binder
    KR10-2004-7013355A KR20040093071A (en) 2002-02-26 2003-02-25 Method for production of sheets made from binder, production line for said sheets and device for generation of an impression
    EP03732623.8A EP1480800B1 (en) 2002-02-26 2003-02-25 Method for production of sheets made from binder, production line for said sheets and device for generation of an impression
    DK04027078.7T DK1510316T3 (en) 2002-02-26 2003-02-25 PROCEDURE FOR MANUFACTURING PLATES BASED ON HYDRAULIC BINDING MATERIAL, PRODUCTION LINE FOR MANUFACTURING SUCH PLATES AND APPARATUS FOR PRINTING
    MXPA04008186A MXPA04008186A (en) 2002-02-26 2003-02-25 Method for production of sheets made from binder, production line for said sheets and device for generation of an impression.
    NZ534531A NZ534531A (en) 2002-02-26 2003-02-25 Method of manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    JP2003571058A JP2005525243A (en) 2002-02-26 2003-02-25 Method for producing sheet from binder, production line for the sheet and apparatus for generating indentations
    KR1020097014966A KR100960605B1 (en) 2002-02-26 2003-02-25 Manufacturing method of sheet based on hydraulic binder, production line and indentation apparatus for producing the sheet
    BRPI0308074A BRPI0308074B1 (en) 2002-02-26 2003-02-25 method of manufacturing binder-based sheets, production line for producing binder-based sheets, printing apparatus and use of printing apparatus
    NZ552217A NZ552217A (en) 2002-02-26 2003-02-25 Method of manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    ES03732623.8T ES2549680T3 (en) 2002-02-26 2003-02-25 Manufacturing process of plates based on hydraulic binder, installation of production of such plates and apparatus for making a footprint
    AU2003239650A AU2003239650B2 (en) 2002-02-26 2003-02-25 Method for production of sheets made from binder, production line for said sheets and device for generation of an impression
    RU2004128450A RU2313452C2 (en) 2002-02-26 2003-02-25 Method for panel production based on hydraulic binding agent, panel production line and embossing device
    ES04027078.7T ES2618522T3 (en) 2002-02-26 2003-02-25 Manufacturing process of plates based on hydraulic binder, installation of production of such plates and apparatus for making a footprint
    PL370532A PL202026B1 (en) 2002-02-26 2003-02-25 Method for production of sheets made from binder, production line for said sheets and device for generation of an impression
    IL16351703A IL163517A0 (en) 2002-02-26 2003-02-25 Method for manufacturing sheets based on hydraulicbinder, productionline for producing such sheets and apparatus for making an impression
    CA2476497A CA2476497C (en) 2002-02-26 2003-02-25 Method of manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    US10/505,543 US7790090B2 (en) 2002-02-26 2003-02-25 Method of manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    CNB038046571A CN100411839C (en) 2002-02-26 2003-02-25 Method for producing panels based on hydraulic adhesives, production line for producing the panels and device for producing impressions
    ARP030100612 AR038609A1 (en) 2002-02-26 2003-02-25 PROCEDURE OF MANUFACTURE OF PLATES BASED ON HYDRAULIC BINDER, INSTALLATION OF PRODUCTION OF SUCH PLATES AND APPARATUS FOR THE REALIZATION OF A FOOTPRINT
    UA20040907791A UA81904C2 (en) 2002-02-26 2003-02-25 Method for production of sheets on base of hydraulic binder from pre-form (variants), production line for of said sheets (variants) and device for generation of impression on pre-form on base of hydraulic binder
    DK03732623.8T DK1480800T3 (en) 2002-02-26 2003-02-25 PROCEDURE FOR MANUFACTURING PLATES BASED ON HYDRAULIC BINDING MATERIAL, MANUFACTURING LINE FOR SUCH PLATES AND APPARATUS FOR PERFORMING A PRINT
    EP04027078.7A EP1510316B1 (en) 2002-02-26 2003-02-25 Method for production of sheets made from hydraulic binder, production line for said sheets and device for generation of an impression
    PCT/FR2003/000606 WO2003072326A2 (en) 2002-02-26 2003-02-25 Method for production of sheets made from binder, production line for said sheets and device for generation of an impression
    ZA2004/06341A ZA200406341B (en) 2002-02-26 2004-08-11 Method of manufacturing sheets based on hydraulic binder production line for producing such sheets and apparatus for making an impression
    IL179895A IL179895A0 (en) 2002-02-26 2004-08-12 Method for manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    IL163517A IL163517A (en) 2002-02-26 2004-08-12 Method for manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    CO04084752A CO5601040A2 (en) 2002-02-26 2004-08-30 PROCEDURE OF MANUFACTURE OF PLATES BASED ON HYDRAULIC BINDER, INSTALLATION OF PRODUCTION OF SUCH PLATES AND APPARATUS FOR THE IMPLEMENTATION OF A FOOTPRINT
    NO20044058A NO20044058L (en) 2002-02-26 2004-09-24 Process for producing liquid binder sheets, plate production line and impression forming device
    US10/904,738 US7651327B2 (en) 2002-02-26 2004-11-24 Production line for producing sheets based on hydraulic binder and method of manufacturing the same
    IL179895A IL179895A (en) 2002-02-26 2006-12-06 Method for manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    JP2009042475A JP2009113497A (en) 2002-02-26 2009-02-25 Method for producing sheet from binder, production line for the sheet and apparatus for generating indentations

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP02290462A EP1338393A1 (en) 2002-02-26 2002-02-26 Apparatus for embossing a preform made of hydraulic binder and process and production line for manufacturing boards made of hydraulic binder

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    EP1338393A1 true EP1338393A1 (en) 2003-08-27

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    Cited By (5)

    * Cited by examiner, † Cited by third party
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    GB2405416A (en) * 2003-08-25 2005-03-02 Lafarge Platres Hydraulic-binder-based board with tapered edges
    GB2433750A (en) * 2003-08-25 2007-07-04 Lafarge Platres Line for producing hydraulic-binder-based boards from a preform
    US7431783B2 (en) 2002-04-10 2008-10-07 Lafarge Platres Method and apparatus for production of plaster plates having 4 tapered edges
    US7651327B2 (en) 2002-02-26 2010-01-26 Lafarge Platres Production line for producing sheets based on hydraulic binder and method of manufacturing the same
    US20150314481A1 (en) * 2012-12-12 2015-11-05 Knauf Gips Kg Clocked Regulation of the Amount of Plaster Paste

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    US2246987A (en) * 1937-10-23 1941-06-24 United States Gypsum Co Continuous molding apparatus
    US3050104A (en) * 1957-07-17 1962-08-21 Celotex Corp Manufacture of gypsum board
    US4781558A (en) * 1986-09-26 1988-11-01 The Celotex Corporation Apparatus for making an embossed gypsum panel

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    US2246987A (en) * 1937-10-23 1941-06-24 United States Gypsum Co Continuous molding apparatus
    US3050104A (en) * 1957-07-17 1962-08-21 Celotex Corp Manufacture of gypsum board
    US4781558A (en) * 1986-09-26 1988-11-01 The Celotex Corporation Apparatus for making an embossed gypsum panel

    Cited By (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7651327B2 (en) 2002-02-26 2010-01-26 Lafarge Platres Production line for producing sheets based on hydraulic binder and method of manufacturing the same
    US7790090B2 (en) 2002-02-26 2010-09-07 Lafarge Platres Method of manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
    US7431783B2 (en) 2002-04-10 2008-10-07 Lafarge Platres Method and apparatus for production of plaster plates having 4 tapered edges
    GB2405416A (en) * 2003-08-25 2005-03-02 Lafarge Platres Hydraulic-binder-based board with tapered edges
    GB2433750A (en) * 2003-08-25 2007-07-04 Lafarge Platres Line for producing hydraulic-binder-based boards from a preform
    GB2405416B (en) * 2003-08-25 2007-12-05 Lafarge Platres Hydraulic-binder-based boards with feathered edges,process for manufacturing hydraulic-binder-based boards and line for producing such boards.
    GB2433750B (en) * 2003-08-25 2007-12-12 Lafarge Platres Line for producing a hydraulic-based-binder board
    US8257525B2 (en) 2003-08-25 2012-09-04 Lafarge Platres Production method for hydraulic binder-based, tapered-edge boards
    US8372240B2 (en) 2003-08-25 2013-02-12 Lafarge Platres Production line for hydraulic binder-based, tapered-edge boards
    US20150314481A1 (en) * 2012-12-12 2015-11-05 Knauf Gips Kg Clocked Regulation of the Amount of Plaster Paste
    US10022893B2 (en) * 2012-12-12 2018-07-17 Knauf Gips Kg Clocked regulation of the amount of plaster paste

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