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EP1129843B1 - Méthode et appareil de séparation de flans pour boítes en carton - Google Patents

Méthode et appareil de séparation de flans pour boítes en carton Download PDF

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Publication number
EP1129843B1
EP1129843B1 EP00200767A EP00200767A EP1129843B1 EP 1129843 B1 EP1129843 B1 EP 1129843B1 EP 00200767 A EP00200767 A EP 00200767A EP 00200767 A EP00200767 A EP 00200767A EP 1129843 B1 EP1129843 B1 EP 1129843B1
Authority
EP
European Patent Office
Prior art keywords
sheets
unbroken
lip
blanks
teeth
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.)
Expired - Lifetime
Application number
EP00200767A
Other languages
German (de)
English (en)
Other versions
EP1129843A1 (fr
EP1129843A8 (fr
Inventor
Pieter Theel
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.)
SERCO B.V.
Original Assignee
Serco BV
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 Serco BV filed Critical Serco BV
Priority to DE60013759T priority Critical patent/DE60013759T2/de
Priority to ES00200767T priority patent/ES2226698T3/es
Priority to EP00200767A priority patent/EP1129843B1/fr
Publication of EP1129843A1 publication Critical patent/EP1129843A1/fr
Publication of EP1129843A8 publication Critical patent/EP1129843A8/fr
Application granted granted Critical
Publication of EP1129843B1 publication Critical patent/EP1129843B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/32—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile
    • B65H3/322—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile for separating a part of the pile, i.e. several articles at once
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1827—Means for removing cut-out material or waste by tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3054—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
    • B65H31/3063—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers by special supports like carriages, containers, trays, compartments, plates or bars, e.g. moved in a closed loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/002—Prebreaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/06—Feeding sheets or blanks from stacks

Definitions

  • the invention relates to a method for separating blanks for cardboard boxes, in particular packaging boxes, from unbroken board sheets which each comprise a number of blanks which are connected to one another along breaking lines, in which method:
  • a starting sheet of corrugated board is, where necessary, provided with text and/or pictures (by printing or processing preprinted sheets).
  • a number of blanks which are still connected to one another along breaking lines, are formed in the starting sheet.
  • Such a sheet having a number of blanks which are connected to one another along breaking lines is known as "an unbroken sheet”.
  • each unbroken sheet is broken into separate blanks. This breaking may take place manually or, if appropriate, mechanically. Breaking is extremely easy, since the breaking lines are already such that the blanks can break free along the breaking lines if the unbroken sheet is picked up.
  • the separated blanks are then manually or mechanically formed into stacks of blanks, which stacks of blanks are then generally packaged further, for example by wrapping a sheet around them, by winding a wire around them or by placing the stacks of blanks in an outer box. All this generally takes place at the premises of the supplier, also known as the "packaging producer", of the packaging box.
  • the stacks of blanks are then transported to the location where the blanks are formed into boxes, which are then filled.
  • the packaging producer operates somewhat differently.
  • the blanks are generally formed directly from the starting sheet by punching. In this case, therefore, there is no formation of a so-called unbroken sheet which is broken into separate blanks in a subsequent breaking step (although this method does exist). Therefore, the separation of the blanks takes place directly during punching. Afterwards, the blanks are again formed into stacks of blanks which can be packaged and made available to the purchaser.
  • the drawback of the method outlined above is that the packaging producer, as the purchaser's supplier, must have a large production capacity in order to be able to supply blanks sufficiently quickly at all times in particular in the event of highly fluctuating demand from the purchaser. Such a situation arises, for example, with boxes for packaging seasonal products, such as ice creams. Ice creams are typically products which are produced and therefore also packaged primarily in the summer season and for which, in addition, demand is very strongly influenced by the weather at the time. If the packaging producer, as supplier, then wants to be able to keep up with a high demand, he must either have or have in reserve sufficiently great production capacity or must have sufficient stocks of stacks containing separate blanks.
  • the second drawback of the current method is that the process steps may influence one another. For example, a fault during the formation of stacks of blanks may have a direct effect on the stamping and printing process.
  • the object of the present invention is to provide a method for separating blanks for cardboard boxes which, inter alia, offers a solution to the above problems.
  • this object is achieved by, in a step a) (before step c), stacking the unbroken sheets to form a stack of sheets.
  • a stack of sheets is understood to mean a stack of unbroken sheets.
  • this stacking to form a stack of sheets offers the advantage that, if it is desired for the separation or, if appropriate, the use of the blanks to take place in line with the operation of forming blanks from starting sheets, the separation step can be made independent of the preceding forming step, by forming a buffer, i.e. the stack of sheets. This means that, in the event of stagnation in the separation process or a subsequent process, the previous forming process can continue to operate, or in the event of stagnation in the forming process the subsequent separating process or further process can continue.
  • the method according to the invention can be used both for boxes, or more correctly blanks, made from corrugated board and for boxes or blanks made from solid board.
  • the punching device will have to be suitable for the production of unbroken board sheets with blanks which are connected to one another via breaking lines.
  • the production of pieces of solid board which are connected to one another via breaking lines is not per se anything special and is already known from the prior art.
  • one or more stacks of sheets not only makes it possible to form a buffer, but also, instead or in addition, also makes it possible to render the separation process more efficient, by, in step c), breaking the stack of sheets or a partial stack of sheets into separated partial stacks of blanks. It is thus possible for the entire stack of sheets to undergo the breaking step all at once, instead of sheet by sheet, which may then result in correspondingly high stacks of separated blanks, referred to as partial stacks of blanks. It is also conceivable for part, known as a partial stack of sheets, to be removed from the stack of sheets and subjected to the breaking process all at once. In this case too, the breaking of a partial stack of sheets may then result in correspondingly high separated partial stacks of blanks.
  • step a If the entire stack of sheets is subjected to a breaking step all at once, in line with the forming process which precedes the breaking process, the abovementioned buffer effect will be, at least partially, lost, unless a plurality of successive stacks of blanks are ready. However, partial stacks of blanks are still easier to handle than each blank separately. If in each case a partial stack of sheets from a stack of sheets is subjected to the breaking process (step a)), the remaining stack of sheets will continue to act as a buffer.
  • forming stacks of unbroken sheets not only makes it possible, in an in-line situation, to make the operation of step c) less dependent on the preceding forming process, but also makes it possible to provide a solution to the abovementioned problems by decoupling the separation process from the forming process (in which unbroken board sheets are formed from starting sheets) entirely.
  • This is because, in the first instance, it is possible to form stacks of unbroken board sheets (which each in turn comprise a number of blanks connected to one another along breaking lines), and to hold these stacks in stock for a longer or shorter time.
  • Stock stacks of this nature take up less space than stacks of blanks which have already been separated and, moreover, tie up less capital.
  • step b) can, according to the invention, be carried out in an advantageous manner, preferably automatically, by firstly inserting a lip beneath the sheet which is to be removed or the bottom sheet of the partial stack of sheets which is to be removed, preferably approximately in the centre of a longitudinal or transverse side of the stack of sheets, and by lifting the said sheet or the said bottom sheet of the partial stack of sheets, in such a manner that a gap is formed on either side of the lip, and by inserting a first tooth into the said gap on either side of the lip and using these first teeth to increase the length of the gap, measured from the lip, on either side of the lip, by inserting in each case a second tooth into the gap on the outer sides, remote from one another, of the first teeth, which has been enlarged in this way, and by fitting the teeth all the way through beneath the said sheet or the said partial stack of sheets.
  • the unbroken sheets can be carefully removed from the stack of sheets without prematurely breaking along the breaking line.
  • This has the advantage that it is consequently possible to feed the unbroken board sheets accurately and in a predetermined manner to a breaking process, preferably an automated breaking process. This is of benefit to the reliability and speed of the entire process.
  • the board sheets may comprise blanks of two or more different types and, after step c) and before any step d), the blanks are sorted according to type and, in any such step d), stacks of blanks are formed for each type containing blanks of the said type, and if appropriate these stacks of blanks are packaged. It thus becomes possible for the unbroken sheets, with regard to the space which they take up, to be divided as efficiently as possible and, if various types of blanks are arranged on these sheets, for these various types of blanks still to be stacked and delivered in separate stacks for each type.
  • the breaking operation can advantageously be brought about if, in step c), the following partial steps are carried out:
  • a breaking method of this nature can in particular be automated very successfully.
  • the unbroken sheets may each be conveyed separately or in so-called partial stacks of sheets or ordinary stacks of sheets in a first direction by means of a first conveyor belt, the breaking lines which are at right angles to this first conveying direction then being relatively easy to break using breaking installations which are known per se, such as a so-called "bundle breaker", which operates according to the principle that bundles which are still connected are broken, the two sides next to the breaking line being clamped and separated from one another by means of a breaking operation, but also by means of other types of breaking installations.
  • the subsheets obtained in this way can be rotated with respect to the conveyor belt by means of a turning device, for example, and can then be conveyed onwards, by the same or a different conveyor belt, in line with the original conveying direction in order then to be subjected to a second breaking operation in which the remaining breaking lines which are at right angles to the second conveying direction are broken.
  • a first conveyor belt and a second conveyor belt which is at right angles to the first conveyor belt and to transfer the subsheets obtained in step c1) to the second conveyor belt without changing their orientation (or, if appropriate, while changing their orientation) and to break the remaining breaking lines on this second conveyor belt.
  • the orientation of the separated blanks is determined and if this orientation is adjusted to a predetermined, desired orientation if the determined orientation deviates from the desired orientation.
  • the desired orientation will in this case be the orientation in which the blank is fed to the stacking means or, if appropriate, even the orientation in which the blank is to be stacked on the stack of blanks.
  • the invention also relates to a device for carrying out the method according to the invention.
  • the device for carrying out the method according to the invention comprises the features in claim 7.
  • the device for carrying out the method according to the invention comprises a gripper for removing an unbroken sheet or a partial stack of unbroken sheets from a stack of unbroken board sheets.
  • This gripper which independently also forms part of the invention, comprises the features in claim 11.
  • a gripper having a separator comprising a safety pin to the inserted between a pile of sheets and a batch is disclosed in document US-A-5 242 262. Further, for removal of the batch, the gripper cooperates with a conveyor system.
  • the lateral distance between adjacent teeth is preferably adjustable.
  • a vertical row of tooth ribs which run horizontally transversely with respect to the first and second teeth is provided above the lip.
  • the correct positioning of a partial stack of sheets which is to be picked up can be maintained better by means of tooth ribs of this nature.
  • the tooth ribs advantageously have a horizontal top surface (on which the edge of the bottom surface of a sheet can be supported) and a bottom surface which tapers at an angle towards the free end of the tooth ribs.
  • the device for carrying out the method according to the invention furthermore preferably comprises a first conveyor and a second conveyor which is at an angle with respect to the first conveyor, a first breaking device which carries out breaking at right angles to the conveying direction of the first conveyor, and a second breaking device which carries out breaking at right angles to the conveying direction of the second conveyor.
  • Fig. 1 shows a highly diagrammatic plan view of a line for handling so-called unbroken board sheets. From the start (at 3) to the end (at 19), the structure and operation of the line 1 are as follows:
  • the supply track 2 moves the feed pallet 3 which is loaded with unbroken sheets to an unloading point 23.
  • a vertical stop wall 4 which can be placed against the feed pallet 3, or at least the stack of unbroken sheets located thereon, as indicated by double arrow 24.
  • the unbroken sheets are unloaded from the feed pallet 3 one by one or preferably in partial stacks of sheets, i.e. smaller stacks containing a number of unbroken sheets are removed from the stack of sheets located on the pallet 3.
  • the separate sheets or partial stacks of sheets are transferred to a first conveyor belt 6, known as the first breaking belt.
  • the first breaking belt 6 By means of this first breaking belt 6, the separate sheet or the partial stack of sheets is fed to a first breaking device 7.
  • the breaking device 7 (which may be of a type which is known per se from the prior art) breaks the unbroken sheet or the partial stack of sheets along the breaking lines which extend transversely to the breaking belt 6. Downstream of the first breaking device 7, the partially broken, so-called unbroken board sheet or the partially broken partial stack of sheets is transferred, at a corner transfer station 8, without its orientation being changed, to a second conveyor belt, known as the second breaking belt.
  • the second breaking belt 9 guides the partially broken unbroken sheet or the partially broken partial stack of sheets through a second breaking device 10, which may operate in the same way as the first breaking device 7.
  • the second breaking device 10 breaks the partially unbroken sheet or the partially broken partial stack of sheets along the second breaking lines which are at right angles to the first breaking lines. Downstream of the second breaking device 10, this results in fully separated blanks or in fully separated partial stacks of blanks.
  • the separated blanks or partial stacks of blanks can be transferred to a left-hand conveyor system (24) or a right-hand conveyor system (25). This transfer may take place on the basis of the location where the separated blanks or partial stacks of blanks arrive (i.e.
  • anything arriving on the right is transferred to the right-hand conveyor system 25 and anything arriving on the left is transferred to the left-hand conveyor system 24), but may also be effected with the aid of a camera system, in which case the camera system determines the shape and/or colour and, on the basis of this, regulates a control means (to the right or left), or alternatively on the basis of a preset order/direction.
  • a counting unit/system 80 To the left and right of station 11 there is a counting unit/system 80, which counts the exact number of separated blanks per partial stack of sheets.
  • the left-hand and right-hand conveyor systems 24 and 25 are both provided with a turning device 13 which, if appropriate as a function of an orientation of the separated blank or partial stack of blanks which is established by a camera system 12 or other type of sensor, places the separated blank or partial stack of blanks in a predetermined, desired orientation.
  • the separated blanks or partial stacks of blanks are conveyed onwards to a so-called layer former, which forms a layer 30 containing a number of stacks of separated blanks, in order to allow this layer then to be transferred, by means of a stacker, to a removal pallet 21 which has been supplied via a pallet feed 16 and onto which a number of layers 30 formed in the layer former 14 are placed.
  • a removal pallet 21 When a removal pallet 21 has been stacked completely full, it is removed to a turning station 18, where the fully stacked removal pallet 22 is oriented in order then to be removed, as a fully stacked removal pallet 22, to a distribution area 19 or elsewhere. Before removal pallet 22 is removed to the distribution area 19 or elsewhere, a top sheet or pallet top can be placed on the fully stacked removal pallet 22 by means of an automatic system 81.
  • FIGs 2, 3 and 5 diagrammatically depict the gripper 5 according to the invention.
  • the gripper comprises an arm 50, which is arranged on a fixedly positioned manipulator 51 (Fig. 1) in such a manner that it can pivot about a vertical and a horizontal axis.
  • the gripper frame 33 is attached to the end of the arm 50 via a horizontal hinge 31 on which there is an extendable/retractable piston/cylinder unit 32.
  • a pressure-exerting member 34 which can be extended and retracted (cf. double arrow) and, during use, can exert pressure on the top of the top unbroken board sheets to be picked up, is attached to the gripper frame 33.
  • an extendable/retractable unit 37, 38 such as a spring unit or piston-cylinder unit, which is arranged at an angle and can move to and fro in the direction of the inclined double arrow, is attached to the gripper frame 33.
  • a foot 39 is attached to the free end of the extendable/retractable unit 37, 38.
  • the extendable/retractable unit 37, 38 bears a vertical plate-like member 52 with, on its bottom side, a lip 35 which projects to the left (in accordance with Figs. 2 and 5) and, above this lip 35, a series of ribs 36 (each rib of which extends substantially horizontally), as shown in more detail in Fig. 2a.
  • a guide rail 44 on which a block 43 runs, is provided on the gripper support 33.
  • This block 43 is attached to the tooth support 42.
  • Four teeth cf. in particular Fig. 3
  • the inner teeth 41 can be adjusted in the transverse direction before or, if appropriate also during or after, insertion beneath a sheet.
  • the outer teeth 40 as indicated by a double arrow, can likewise be displaced transversely to their longitudinal direction, along a guide, before or, if appropriate also during or after, insertion beneath a sheet, in order for it to be possible to adjust the distance between adjacent teeth.
  • the outer teeth 40 are mounted on the tooth carrier 42 by means of a transverse guide 42.
  • the inner teeth 41 are mounted on the tooth support 42 by means of a transverse guide 46.
  • the teeth 40 and 41 can preferably be adjusted independently of one another. If appropriate, the inner teeth 41 can be fixed once they have been adjusted.
  • Fig. 5a shows the run-up phase of this operation
  • Fig. 5b shows the phase in which the lip 35 has been pushed just under the said bottom sheet of the said partial stack of sheets to be picked up.
  • the ribs 36 help to improve the engagement on the partial stack of sheets to be picked up, the effect of which will become clearer still in Fig. 5c.
  • the stop wall 4 (Fig.
  • the teeth 40, 41 will then arrive at the stack of sheets and will be able to push into the enlarged gap which has formed on either side of the foot 39 as a result of the partial stack of sheets which is to be picked up having been lifted further by means of foot 39.
  • the ribs 36 play an important role. This is because the ribs 36 provide an additional point of engagement, on which unbroken sheets which are located at a relatively high level are supported when the lip 35 engages beneath the bottom unbroken sheet of the partial stack of sheets which is to be picked up.
  • pressure-exerting member 34 moves downwards and exerts pressure on the top of the partial stack of sheets to be picked up, and the partial stack of sheets to be picked up can be handled by means of the gripper and deposited, for example, on the first breaking belt 6 (Fig. 1).
  • the adjustability of the teeth 41, 40 transversely with respect to the longitudinal direction is of great importance.
  • the positioning of the teeth 40, 41 with respect to one another has to be adjusted as a function of the unbroken sheets to be handled in such a manner that there is no significant overhang at the outer sides (i.e. outside the outer teeth 40), and sagging between the outer teeth 40 is also prevented.
  • the procedure will be for the positioning of the teeth 40, 41 with respect to one another to be stored in a computer or other type of storage medium for a number of types of unbroken sheet which are to be handled and for the correct type of unbroken sheet to be input by means of input means each time the type of unbroken sheet is changed, so that a control unit can ensure that the positioning of the teeth 40, 41 can be adjusted correctly. Should a new type of unbroken sheet to be handled arise, the settings for the teeth 40, 41 will be determined and will also be input and stored in the storage means. All this may be implemented by means of a central control system.
  • the central control system can also store data relating, for example, to the colour and shape of the various blanks and unbroken sheets. This data can then be utilized to control the breaking devices 7 and 10 and also to assist the counting member 80 and any camera system provided at 11.
  • This control system can also store data relating to the desired orientation of separated blanks with a view to controlling the turning devices 13.
  • the control system can hold the data for a large number of types of unbroken sheets and blanks produced therefrom, and then all the components of the overall system can be adjusted to the appropriate type of unbroken sheet to be handled in each case by means of input means.
  • Fig. 4 provides further illustration, showing a plan view of an example of an unbroken sheet.
  • the unbroken sheet shown in Fig. 4 contains two different types of blanks, namely three blanks 61 and three blanks 62, from which the bottom part and the lid part, respectively, of a box can be produced.
  • Adjacent blanks 61 are connected via breaking lines 63.
  • Adjacent blanks 62 are connected via breaking lines 64 which are not aligned with the breaking lines 63, although if appropriate this is quite possible.
  • the blanks 61, 62 are in each case connected via short breaking lines 65.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Making Paper Articles (AREA)
  • Forming Counted Batches (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Claims (14)

  1. Méthode de séparation de flans pour boítes en carton, en particulier pour boítes d'emballage, de feuilles de carton ininterrompues comprenant, chacune, un certain nombre de flans qui sont connectés l'un à l'autre le long de lignes de cassure, méthode dans laquelle :
    dans une étape a), les feuilles ininterrompues sont empilées, pour former une pile des feuilles ;
    dans une étape c), après l'étape a), les feuilles ininterrompues sont cassées, pour former des flans séparés ; et
    dans une étape d), les flans séparés sont, de préférence, disposés en piles de flans ;
       caractérisée en ce que :
    après l'étape a) et avant l'étape c), dans une étape b), une feuille ininterrompue ou, de préférence, une pile partielle de feuilles ininterrompues est enlevée de la pile de feuilles et soumise à l'étape c), et
    cette étape b) est effectuée en introduisant tout d'abord une languette (35) sous la feuille qui doit être enlevée, respectivement la feuille inférieure de la pile partielle de feuilles qui doit être enlevée, de préférence environ au centre d'un côté longitudinal ou transversal de la pile de feuilles, et en soulevant, à l'aide de la languette (35), ladite feuille, respectivement ladite feuille inférieure, de sorte que soit formé un interstice (46), en introduisant une patte (39) dans ledit interstice (46), la surface supérieure de ladite patte (39) s'étendant obliquement vers le haut, afin d'agrandir l'interstice (46) quand la patte (39) est introduite dans l'interstice (46), et en introduisant une première et une deuxième dent (40, 41), la première dent (41) se situant entre la deuxième dent (40) et la languette (35), dans ledit interstice agrandi (46) de part et d'autre de la patte (39) ; et en introduisant les dents (40, 41) totalement sous ladite feuille, respectivement ladite pile partielle de feuilles.
  2. Méthode selon la revendication 1, caractérisée en ce que les première 41 et deuxième 40 dents sont introduites dans l'interstice agrandi (46) de part et d'autre de la patte (39), et en ce que la distance entre des première (41) et deuxième (40) dents adjacentes est réglée de sorte qu'une feuille ininterrompue qui repose sur ces dents et doit être manipulée se trouve substantiellement à plat.
  3. Méthode selon l'une des revendications précédentes, caractérisée en ce que, à l'étape c), la pile de feuilles, respectivement la pile partielle de feuilles est cassée, pour former des piles partielles de flans séparés.
  4. Méthode selon l'une des revendications précédentes, caractérisée en ce que les feuilles de carton comprennent des flans de deux types différents ou plus, et en ce que, après l'étape c) et avant toute étape d), les flans sont triés par type et dans toute telle étape d) sont formées des piles de flans pour chaque type contenant des flans du type en question.
  5. Méthode selon l'une des revendications précédentes, caractérisée en ce qu'à l'étape c) sont réalisées les étapes partielles suivantes :
    c1) les feuilles ininterrompues sont acheminées dans une première direction par rapport auxdites feuilles, et les lignes de cassure qui sont perpendiculaires à ladite première direction sont cassées pour former des sous-feuilles ininterrompues contenant, chacune, une simple rangée, qui s'étend transversalement à la première direction, de flans qui sont connectés entre eux le long des lignes de rupture ; et
    C2) les sous-feuilles obtenues à l'étape c1) sont acheminées dans une deuxième direction par rapport auxdites feuilles, deuxième direction qui forme un angle avec la première direction, et les lignes de cassure qui sont perpendiculaires à cette deuxième direction sont cassées, pour former les flans séparés.
  6. Méthode selon l'une des revendications précédentes, caractérisée en ce qu'avant toute étape d) est déterminée l'orientation des flans séparés, et en ce que cette orientation est modifiée en une orientation désirée prédéterminée si l'orientation déterminée se dévie de l'orientation désirée.
  7. Dispositif pour mettre en oeuvre la méthode selon l'une des revendications précédentes, comprenant :
    des moyens d'empilement de feuilles destinés à empiler les feuilles de carton ininterrompues ;
    des moyens de cassure (7, 10) destinés à casser les feuilles de carton ininterrompues, pour former des flans séparés ;
    de préférence, des moyens d'empilement de flans (15) ;
       caractérisé en ce que le dispositif comprend, par ailleurs, une pince (5) pour enlever une feuille ininterrompue ou une pile partielle de feuilles ininterrompues de la pile de feuilles de carton ininterrompues ;
       dans lequel la pince (5) comprend des moyens de commande de pince ;
       dans lequel la pince (5) comporte une languette horizontale (35) avec, de part et d'autre, une deuxième dent (40) et une première dent (41) située entre la deuxième dent (40) et la languette (35), les première (41) et deuxième (40) dents étant déplaçables dans leurs directions longitudinales par rapport à la languette (35) ;
       dans lequel la pince (5) comprend, par ailleurs, une patte (39) qui, dans la direction longitudinale des première (41) et deuxième (40) dents, est alignée sur la languette (35), dans lequel la languette est déplaçable vers le haut et la patte (39) est déplaçable horizontalement par rapport à la languette (35), pour passer sous la languette ; et
       dans lequel les moyens de commande de pince sont conçus pour introduire la languette (35) entre deux feuilles ininterrompues, pour déplacer la languette (35) vers le haut, afin de former un interstice (46) entre lesdites deux feuilles ininterrompues, puis pousser la patte (39) dans l'interstice (46) qui est formé et, ensuite, introduire les dents (40, 41) dans l'interstice agrandi (46) jusqu'à ce qu'elles soient introduites totalement sous la feuille ou ladite pile partielle de feuilles.
  8. Dispositif selon la revendication 7, dans lequel les première (41) et/ou deuxième (40) dents peuvent être ajustées transversalement par rapport à leurs directions longitudinales.
  9. Dispositif selon l'une de revendications 7-8, dans lequel une rangée verticale de nervures dentées (39) qui s'étendent horizontalement transversalement par rapport aux première (41) et seconde (40) dents est prévue au-dessus de la languette (35).
  10. Dispositif selon la revendication 9, dans lequel les nervures dentées (39) ont une surface supérieure horizontale et une surface inférieure qui s'effile suivant un angle vers l'extrémité libre des nervures dentées.
  11. Pince pour enlever une feuille ininterrompue ou une pile partielle de feuilles ininterrompues d'une pile de feuilles ininterrompues ;
       dans laquelle la pince (5) comprend des moyens de commande de pince ;
       dans laquelle la pince (5) comprend une languette horizontale (35) avec, de part et d'autre, une deuxième dent (40) et une première dent (41) située entre la deuxième dent (40) et la languette (35), les première (41) et deuxième (40) dents étant déplaçables dans leurs directions longitudinales par rapport à la languette (35) ;
       dans laquelle la pince (5) comprend, par ailleurs, une patte (39) qui, dans la direction longitudinale des première (41) et deuxième (40) dents, est alignée sur la languette (35),
    dans laquelle la languette est déplaçable vers le haut et la patte (39) est déplaçable horizontalement par rapport à la languette (35), pour passer sous la languette ; et
       dans laquelle les moyens de commande de pince sont conçus pour insérer la languette (35) entre deux feuilles ininterrompues, pour déplacer la languette (35) vers le haut, afin de former un interstice (46) entre lesdites deux feuilles ininterrompues, pour pousser ensuite la patte (39) dans l'interstice (46) qui est formé et, puis, introduire les dents (40, 41) dans l'interstice agrandi (46) jusqu'à ce qu'elles s'introduisent totalement sous la feuille ou ladite pile partielle de feuilles.
  12. Pince selon la revendication 11, dans laquelle les première (41) et/ou deuxième (40) dents peuvent être ajustées transversalement à leurs directions longitudinales.
  13. Pince selon la revendication 10 ou 11, dans laquelle une rangée verticale des nervures dentées (39) qui s'étendent horizontalement transversalement par rapport aux première (41) et deuxième (40) dents est prévue au-dessus de la languette (35).
  14. Pince selon la revendication 13, dans laquelle les nervures dentées (39) ont une surface supérieure horizontale et une surface inférieure qui s'effile suivant un angle vers l'extrémité libre des nervures dentées.
EP00200767A 2000-03-03 2000-03-03 Méthode et appareil de séparation de flans pour boítes en carton Expired - Lifetime EP1129843B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60013759T DE60013759T2 (de) 2000-03-03 2000-03-03 Verfahren und Vorrichtung zum Trennen von geschnittenem Material für Pappschachteln
ES00200767T ES2226698T3 (es) 2000-03-03 2000-03-03 Procedimiento y maquina para separar piezas en tosco de cajas de carton.
EP00200767A EP1129843B1 (fr) 2000-03-03 2000-03-03 Méthode et appareil de séparation de flans pour boítes en carton

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00200767A EP1129843B1 (fr) 2000-03-03 2000-03-03 Méthode et appareil de séparation de flans pour boítes en carton

Publications (3)

Publication Number Publication Date
EP1129843A1 EP1129843A1 (fr) 2001-09-05
EP1129843A8 EP1129843A8 (fr) 2002-01-16
EP1129843B1 true EP1129843B1 (fr) 2004-09-15

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DE (1) DE60013759T2 (fr)
ES (1) ES2226698T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1395529B1 (it) * 2009-03-06 2012-09-28 Mirabella Sistema di caricamento di fogli di cartone ondulato che utilizza un robot antropomorfo
DE102010005766B3 (de) * 2010-01-25 2011-07-21 nemac engineering GmbH, 78048 Vorrichtung zum automatischen Entnehmen und Ablegen von Folienstanzteilstapeln
US8777551B1 (en) * 2011-07-14 2014-07-15 Automatan, Inc. Robotic lifting apparatus
FR3043078B1 (fr) * 2015-10-30 2020-09-18 C E R M E X Constructions Etudes Et Rech De Materiels Pour Lemballage Dexpedition Dispositif et methode d'extraction
CN108582230B (zh) * 2018-05-24 2023-08-01 浙江华岳包装机械有限公司 带自动清废功能的切纸机
DE102020113375A1 (de) * 2020-05-18 2021-11-18 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit zumindest einem Übergabetransportsystem und Verfahren zum Transport von Bogen in einer Bogenbearbeitungsmaschine
DE102020113373B3 (de) * 2020-05-18 2021-06-10 Koenig & Bauer Ag Bogenbearbeitungsmaschine
DE102023130970A1 (de) * 2023-11-08 2025-05-08 Krones Aktiengesellschaft Greiferkopf und Verfahren zur Handhabung von Verpackungszuschnitten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH577427A5 (fr) * 1974-10-02 1976-07-15 Bobst Fils Sa J
FR2514296A1 (fr) * 1981-10-12 1983-04-15 Lucas Raymond Separateur de poses
CH646665A5 (fr) * 1982-05-19 1984-12-14 Bobst Sa Dispositif pour separer l'une de l'autre les differentes poses d'un paquet de feuilles decoupees.
CH681886A5 (fr) * 1990-04-10 1993-06-15 Bobst Sa

Also Published As

Publication number Publication date
DE60013759D1 (de) 2004-10-21
DE60013759T2 (de) 2005-09-29
EP1129843A1 (fr) 2001-09-05
ES2226698T3 (es) 2005-04-01
EP1129843A8 (fr) 2002-01-16

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