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WO2005019079A1 - Buse, dispositif et procede d'application d'un agent adhesif sur une bande de papier, procede d'amelioration de la fonction d'utilisation d'une telle buse - Google Patents

Buse, dispositif et procede d'application d'un agent adhesif sur une bande de papier, procede d'amelioration de la fonction d'utilisation d'une telle buse Download PDF

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Publication number
WO2005019079A1
WO2005019079A1 PCT/SE2004/001143 SE2004001143W WO2005019079A1 WO 2005019079 A1 WO2005019079 A1 WO 2005019079A1 SE 2004001143 W SE2004001143 W SE 2004001143W WO 2005019079 A1 WO2005019079 A1 WO 2005019079A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
adhesive agent
air
nozzles
web
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.)
Ceased
Application number
PCT/SE2004/001143
Other languages
English (en)
Other versions
WO2005019079A8 (fr
Inventor
Mats Tage GÖRREL
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
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
Priority claimed from SE0302285A external-priority patent/SE0302285L/xx
Application filed by Metso Paper Oy filed Critical Metso Paper Oy
Priority to BRPI0412977-6A priority Critical patent/BRPI0412977A/pt
Priority to JP2006524598A priority patent/JP2007503371A/ja
Priority to DE602004012118T priority patent/DE602004012118T2/de
Priority to EP04749179A priority patent/EP1660399B1/fr
Publication of WO2005019079A1 publication Critical patent/WO2005019079A1/fr
Publication of WO2005019079A8 publication Critical patent/WO2005019079A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • B65H37/02—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for applying adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/70—Arrangements for moving spray heads automatically to or from the working position
    • B05B15/72—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means
    • B05B15/74—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means driven by the discharged fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B65H19/286—Attaching the leading end of the web to the replacement web-roll core or spindle by applying adhesive to the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/002—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour incorporating means for heating or cooling, e.g. the material to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/23—Winding machines
    • B65H2408/236—Pope-winders with first winding on an arc of circle and secondary winding along rails

Definitions

  • the present invention relates to a nozzle suitable for applying an adhesive agent onto a running paper web, said nozzle being provided with a protecting device arranged for protecting the nozzle from particulate, operations-disturbing contaminations by means of compressed air, said protecting device comprises a member for defining a free space enclosing the nozzle, a member for supplying air into said space, and a member for discharging said air from the space in a position centrally in front of and at a distance from a front end surface of the nozzle.
  • the invention also relates to a device for applying an adhesive agent onto a running paper web, said device including a plurality of nozzles each nozzle being provided with a protecting device arranged for protecting the nozzle from particulate, operations-disturbing contaminations by means of compressed air, said protecting device comprises a member for defining a free space enclosing the nozzle, a member for supplying air into said space, and a member for discharging said air from the space in a position centrally in front of and at a distance from a front end surface of the nozzle.
  • the invention also relates to a method of applying an adhesive agent onto a running paper web by means of nozzles, comprising the step of: protecting the nozzles against particulate contaminations from the surrounding environment by means of protecting devices while supplying compressed air in order to improve the operational function of the nozzles, said step of protecting each nozzle comprising arranging a defined space enclosing the nozzle, and supplying air into the defined space and evacuating the air through an opening being located in front of and at a distance from the nozzle.
  • the invention also relates to a method of improving the operational function of nozzles suitable for applying an adhesive agent onto a running paper web, comprising the step of: protecting the nozzles against particulate contaminations from the surrounding environment by means of protecting devices while supplying compressed air, said step of protecting each nozzle comprising arranging a defined space enclosing the nozzle, and supplying air into the defined space and evacuating the air through an opening being located in front of and at a distance from the nozzle.
  • the invention is especially, but not exclusively, applicable in connection with a running paper web when switching reels in a reel-up of a paper machine. It can of course also be applied to a rewinder or reel packing machine, i.e. in all types of paper-manufacturing and paper-handling machines.
  • adheresive agent should be understood in its widest sense, and is intended to include also such agents which normally do not have a tacky or adhesive touch in themselves, but which provide an adhesive effect when the paper web and e.g. the reel shaft get into contact with each other.
  • an adhesive agent is water.
  • a device for applying adhesive agent is known from SE 509 117 C2.
  • the unfavourable environment is due to the presence of large quantities of air contaminations in the form of dust particles, primarily consisting of fibres and fibre fragments disrupted from the web, in combination with strong air flows hitting the nozzles, so that dust constantly adheres to and builds up on the nozzles in thick layers, resulting in the channels for air and adhesive agent of the nozzles being clogged at their outlet ports, which in its turn implies that the function of the nozzles deteriorates all the time and finally is interrupted, resulting in expensive operation shutdowns.
  • This unfavourable process is speeded up by the fact that the temperature is relatively high in the environment in question and that the dust particles are electrically charged, which further increases their inclination to be attracted to the nozzles.
  • the object of the present invention is to improve the operational function substantially when applying adhesive agent in order to avoid undesired breakdowns in the reeling process.
  • the nozzle according to the invention is characterized in that said air supply member is arranged to supply air when the nozzle is in a state of rest between two successive applications of adhesive agent.
  • the device according to the invention is characterized in that said air supply member of each nozzle is arranged to supply air when the nozzle is in a state of rest between two successive applications of adhesive agent.
  • the method of applying adhesive agent according to the invention is characterized in that said supplying and evacuating of air occurring when the nozzles are in a state of rest between two successive applications of adhesive agent.
  • the method of improving the operational function of the nozzles according to the invention is characterized in that said supplying and evacuating of air occurring when the nozzles are in a state of rest between two successive applications of adhesive agent .
  • Figure 1 shows in a perspective view portions of a reel-up in a paper machine being equipped with a device for applying an adhesive agent according to the invention.
  • Figure 2 is a lateral view of a supporting cylinder, an empty reel shaft, and portions of a paper roll having obtained its full size, and illustrates the position of the device for applying an adhesive agent according to the invention.
  • Figure 3 is a perspective view of portions of the device for applying an adhesive agent according to Figure 1, and shows an axis of rotation having an actuator.
  • Figure 4 is a perspective view of an internal nozzle member of the device for applying an adhesive agent according to Figure 1, and shows its mounting to the axis of rotation and different pipes for supplying adhesive agent and air.
  • Figures 5 and 6 are a lateral view and a perspective view, respectively, of the nozzle member according to Figure 4 in a rest position and, furthermore, a cup for collecting adhesive agent.
  • Figures 7 and 8 are a lateral view and a perspective view, respectively, of the nozzle member according to Figures 5 and 6 in an upwards-pivoted position of application.
  • Figure 9 is a schematic representation, in cross-section, of the nozzle of the device for applying an adhesive agent according to Figure 1 in a rest position and a protecting cover, and illustrates air flows out of the protecting cover.
  • Figure 10 shows the nozzle and the protecting cover according to Figure 9 in a position for applying adhesive agent, and illustrates air flows and a string-like jet of adhesive agent out of the nozzle.
  • Figure 11 is a lateral view of a nozzle member similar to the one in Figure 7, but being provided with a nozzle emitting a jet in the form of a spray.
  • Figure 12 is a schematic representation, in cross-section, of the nozzle and its protecting cover according to Figure 11, in a rest position.
  • Figure 13 shows the nozzle and the protecting cover according to Figure 11, in a position of application.
  • Figure 14 shows in a perspective view portions of a reel-up in a paper machine being equipped with a device for applying an adhesive agent according to a second embodiment of the invention, wherein the applicator device is in an operating position.
  • Figure 15 shows the reel-up according to Figure 14 with the applicator device in a maintenance position.
  • FIGS 16 and 17 show the applicator device according to Figure 14 in different perspective views.
  • Figure 18 shows the applicator device according to Figure 15.
  • Figure 19 is a photographic illustration which, in a perspective view obliquely from behind, shows the applicator device according to Figure 14 in a position of application.
  • Figure 20 is photographic illustration which, in a perspective view obliquely from the front, shows portions of the applicator device according to Figure 20 in a maintenance position.
  • Figures 1 and 2 show portions of a reel-up in a paper machine for manufacturing a web 1 of paper.
  • the reel-up includes a stand 2, having two vertical pillars 3, 4, and a movable supporting member 5 rotatably mounted in bearings on the stand 2 which, in the embodiment shown, consists of a supporting cylinder.
  • the supporting member can be constituted of an endless supporting belt.
  • the reel-up has an upper supply (not shown) of empty reel shafts 6, and lowering arms (not shown) , being rotatably mounted in bearings on the stand 2, for lowering a new, i.e.
  • FIG. 1 also shows a growing paper roll 7, approaching its finished size.
  • the reel-up is equipped with a device 8 for applying an adhesive agent, including a supporting construction 9, being mounted on the stand 2 of the reel-up upstream the supporting cylinder 5 and extending transversely to the machine direction.
  • the supporting construction 9 is constituted of a horizontal support beam, extending between and being rigidly mounted to the two vertical stand pillars 3, 4.
  • the device 8 for applying an adhesive agent includes a plurality of nozzle members 14, being arranged along a line transversely to the machine direction, and a mounting device for mounting the nozzle members 14 to the support beam 9.
  • the mounting device includes three brackets 10 (see Figures 1 and 3) , each having a horizontal portion 11 and a portion 12 being directed obliquely upwards, wherein each bracket 10 with its horizontal portion 11 is rigidly mounted to the horizontal support beam 9.
  • the bracket portions 12 being directed obliquely upwards carry an inclined dust shield 13, extending transversely to the machine direction, wherein the lower horizontal edge of the dust shield 13 is located above and at a distance from the tip of each bracket 10.
  • the mounting device includes a horizontal, elongated rod 15, extending below the brackets 10 transversely to the machine direction and being parallel with the support beam 9, wherein the rod 15 is pivotally mounted in three bearing elements 16, being rigidly mounted to the underside of the brackets 10 and extending downwards.
  • a bearing member which can be arranged on the rod 15 itself and/or in the bearing element 16, so that the rod 15 easily can be rotated around its centre axis.
  • the bearing member can be a common slide bearing or a ball or roller bearing.
  • An actuator 17 is arranged at each end of the rod 15 for rotating the rod 15 which thus forms an axis of rotation.
  • each actuator 17 consists of a pneumatic cylinder, which at its rear end is pivotally journalled in bearings on a mounting element 18, which in its turn is rigidly mounted to the support beam 9.
  • the cylinder 17 has a piston rod 19, which can be projected from the front end of the cylinder 17 and which is articulately connected to a link arm 20, which in its turn is rigidly connected to the associated end of the axis of rotation 15.
  • the reference numeral 21 denotes a stop element, being rigidly mounted to the horizontal bracket portion 11, for interacting with the link arm 20 in order to restrict the rotary motion of the axis of rotation 15.
  • An activation of the air cylinders 17 thus results in a clockwise or counter clockwise rotation of the axis of rotation 15.
  • the nozzle members 14 are uniformly distributed for enabling the web 1 to be provided with adhesive agent along its entire width, i.e. within a surface region extending between the parallel edges of the web perpendicularly to the machine direction.
  • the mounting device includes a plurality of supporting bodies 23, each carrying a nozzle member 14, and link arms 25, each being rigidly mounted to a supporting body 23 as well as to the axis of rotation 15.
  • the rigid joints can be accomplished in any suitable ways, e.g. by means of suitable locking members, forming e.g. engagement and/or clamping joints.
  • the rigid joints between the link arms 25 and the axis of rotation 15 are not shown in any closer detail.
  • the rigid joint between each link arm 25 and its associated supporting body 23 is formed by a horizontal supporting pin 31, projecting from and being rigidly mounted to the link arm 25, a lockable, two-parts clamping device 32, being rigidly mounted to the supporting body 23 and clamping the supporting pin 31.
  • the reference numeral 34 denotes a pipe for supplying adhesive agent to the nozzle member 14 through the supporting body 23. It will be understood that a revolving unit is obtained, by means of the rigid joints, out of the axis of rotation 15 and all link arms 25, supporting bodies 23 and nozzle members 14.
  • Each nozzle member 14 includes a connecting portion 35 and a nozzle 36 mounted therein.
  • a first embodiment of a nozzle 36 is schematically shown in Figures 9 and 10.
  • the nozzle 36 has a flat front surface 37 and a linear, central channel 38 for supplying adhesive agent, including a rear channel portion 39 and a front channel portion 40, ending in said front surface 37.
  • the front channel portion 40 has a predetermined length and a predetermined, relatively small diameter, so that non-pressurised adhesive agent in the front channel portion 40 can be retained therein without dripping by means of capillary action, when the nozzle 36 is in a non-operative state, which in the embodiment shown can be denoted as a rest position.
  • the connecting portion 35 of the nozzle member 14 has a channel for adhesive agent (not shown) , connecting to the rear channel portion 39 in the nozzle 36 and to a channel for adhesive agent (not shown) in the supporting body 23, which in its turn is connected to the above-mentioned external pipe 34 for adhesive agent.
  • a central valve needle 41 is arranged in the rear channel portion 39 for closing and opening the inlet to the narrow front channel portion 40, wherein the valve needle 41 is connected to an actuator (not shown) for being displaced linearly into a closed position (see Figure 9) and an open position (see Figure 10) , respectively.
  • the nozzle 36 is provided with a plurality of air channels 42, being connected to a common external pipe 56 for air supply and having front channel portions 43, ending in said front surface 37 at the same distance from the outlet port of the front channel portion 40.
  • Each front channel portion 43 is directed obliquely away from the centre line 44 of the nozzle 36, so that the discharging air jet 45 does not come to intersect the above-mentioned centre line 44 in its extension out of the outlet port of the front channel portion 40 and so that the discharging air jets do not intersect each other.
  • Each nozzle member 14 is provided with a protecting device, being arranged for protecting the nozzle 36 from contaminations or dirt particles, such as dust, primarily being constituted of fibres or fibre fragments disrupted from the web.
  • the protecting device includes a protecting cover 46, having an internal, free space 47, enclosing the nozzle 36.
  • the protecting cover 46 is pivotally and lockably connected to the connecting portion 35 in order to enable it to be opened and let down for enabling internal cleaning of the nozzle 36 and the protecting cover 46, when this is considered necessary.
  • An external pipe 48 is connected to the protecting cover 46 at its upper portion for supplying air into the space 47 through an inlet 49.
  • the front wall 51 of the protecting cover 46 is provided with a central, circular outlet port 50, being arranged coaxially below the front surface 37 of the nozzle 36 and having a diameter somewhat larger than the diameter of the concentric circle in which the outlet ports of the front channel portions 43 are located, in order not to influence the outflowing air jets 45 adversely.
  • the front wall 51 is located at a predetermined axial distance from the front surface 37 of the nozzle 36.
  • the device for applying an adhesive agent includes a collecting member 52 for adhesive agent, being arranged directly below the nozzles 36 for catching adhesive agent, which in certain situations intentionally is discharged from the nozzles 36 when these are located in their vertical rest or idle positions.
  • the collecting device 52 includes a plurality of cuplike vessels 53, opening upwards and being rigidly arranged on a horizontal, transverse supporting bar 54, which in its turn is rigidly arranged on the brackets 10.
  • the cups 53 have a length adapted for serving one nozzle member 14.
  • the cups 53 open upwards are designed and positioned for receiving the protecting covers 46 carried by the nozzle members 14, when the nozzle members 1.4 are pivoted down in an arc into their vertical positions of rest, so that the lower central outlet ports 50 of the protecting covers 46 become - located at a suitable distance from the bottoms of the cups 53 and so that air, flowing out of the protecting covers 46, is allowed to flow further on out of the cups 53.
  • the device for applying an adhesive agent further includes a ⁇ source of compressed air (not shown)., serving the existing air cylinders 17 and supplying the nozzle members- 14 with air through the pipes 56, 48 being connected..? o..the, nozzles 36 and the protecting covers 46, and a pump 55, ⁇ feeding adhesive agent from a stock (not shown) .of.
  • the nozzle members 14 are provided with electric heating devices 57 for maintaining the adhesive agent at the desired operating temperature, and also a control unit (not shown) , being arranged for controlling the process of applying the adhesive agent by means of influencing the present functions at the different instants of time and within the different time intervals, wherein the control unit is controlled by the reeling process in the reel-up with respect to the switching of paper rolls and possible web breaks.
  • the control unit is programmed for controlling the process of applying an adhesive agent in connection with switching of paper rolls. Said switching can take place by means of a so-called full-width wrapping or a so-called wide leader-wrapping, where a leader having a predetermined width, usually 400-600 mm, is obtained by means of cutting a leader out of the web before the supporting cylinder 5. Those nozzles 36 which are located outside the leader are disconnected when performing wide leader-wrapping.
  • the nozzles 36 are located in their lower positions of rest having their channels 38 for adhesive agent directed vertically towards the bottom portions of the collecting cups 53.
  • air is blown through the protecting covers 46 in order to . revent dust from penetrating into the nozzles 36, and through the air channels 42 in order to keep also these clean from dust at the outlet ports.
  • the reel shaft is lowered down into position of wrapping and the nozzle members 14 are pivoted upwards into their positions of application, wherein the channels 38 for adhesive agent of the nozzles 36 are directed perpendicularly or almost perpendicularly to the web 1.
  • the blow pipe 58 is connected at the same time as the secondary carriage (not shown) of the reel-up is moved forwards a small distance and is braked for a short period of time, so that the web 1 forms a slack 59 (see Figure 2) in the space obtained between the supporting cylinder 5 and the finished paper roll 7, wherein the air from the blow pipe 58 acts on this slack 59 so that it is lifted up while forming a so-called balloon.
  • the air supply to the air channels 42 of the nozzles 36 is increased and the air supply to the protecting covers- 46 is closed.
  • the discharge of adhesive agent starts at the same time as, or a few seconds after the balloon-blowing has been initiated, e.g.
  • the discharge of adhesive agent can take place within a period of time of at least 1 second and usually 10 seconds at the most.
  • the adhesive agent is applied within a surface region of the web 1 extending across the entire web 1, i.e. from edge to edge perpendicularly to the machine direction.
  • the web 1 is stuck to the new reel shaft 6, so that the web 1 follows it around in order to subsequently be torn off as a result of the tensile force arising in the web 1 between the finished paper roll 7 and the new, now wrapped, reel shaft 6.
  • the blow pipe 58 for the balloon-blowing is disconnected and, immediately after finished application of adhesive agent, the nozzle members 14 are pivoted back down into their vertical positions of rest.
  • the air flow through the air channels 42 of the nozzles 36 is reduced and the air supply into the protecting covers 46 is commenced again.
  • the nozzles 36 are maintained in such a condition that they are ready for being able to perform a fresh application of adhesive agent, which is to take place at a predetermined instant of time, e.g. 20 minutes after the performed wrapping.
  • the nozzles 36 thus are arranged for assuming a rest position, in which the channels 38 for adhesive agent are directed vertically, and a position of application, in which the nozzles 36 have been pivoted upwards by means of rotating the axis of rotation 15, so that the channels 38 for adhesive agent forms a substantially straight angle with the web 1.
  • the adhesive agent is retained in the channel portion 40 by means of capillary force action. Air flows through the air channels 42 with a relatively low velocity which is sufficient for maintaining them open since dust particles by the outflowing air are prevented from getting stuck around and inside the outlet ports of the air channels 42.
  • the outflowing air must not have such a velocity that it adversely affects the adhesive agent being present inside the front channel portion 40, so that adhesive agent is drawn out of it and dries, having the result that the outlet port is clogged by congealed adhesive agent.
  • the air flowing through the protecting cover 46, around the nozzle 36 and out through the outlet port 50 should have a velocity through the outlet port 50 which is sufficient, e.g. about 10 m/s, so that dust particles are prevented from penetrating into the protecting cover 46.
  • valve needle 41 is opened for a short time at regular intervals during said shutdown, so that a small quantity of adhesive agent is discharged from each nozzle 36 and caught by the cups 53 and fresh adhesive agent always will be present at the outlet ports. In this way, the operating ability of the nozzles is ensured also during such, usually unscheduled, prolonged idle or rest periods.
  • the air supply to the protecting covers 46 is closed, while the air flow through the air channels 42 is increased to a predetermined velocity, so that the air jets 45 from the air channels 42 favourably influences the strand-like jet 60 of adhesive agent which simultaneously is pressed out of the channel 38 for adhesive agent.
  • the air jets 45 being directed away from the extended centre line 44 of the channel 38 intended for adhesive agent and obliquely forwards circumferentially, they will influence the ejected jet 60 of adhesive agent, so that it is turned around into a helical shape having an increasing width in a direction towards the web 1.
  • the air jets 45 exert a tensile force on the jet 60 of adhesive agent which assists in drawing the jet 60 of adhesive agent out of the channel portion 40. Furthermore, the air jets 45 will create an air curtain around the helical jet 60 of adhesive agent, so that it is supported and carried forwards by the air jets 45 and is held together in its helical shape.
  • the nozzles 36 are movable between their rest positions and positions of application, since the web 1 has a rising, inclined run at the place of application, i.e. the web 1 forms an acute angle with the horizontal plane.
  • the device for applying an adhesive agent according to the invention has stationary nozzles, which all the time, i.e. both in a state of rest and in state of application, have their channels for adhesive agent directed vertically.
  • the cups collecting adhesive agent therefore are arranged in a movable way, so that they can be displaced in a lateral direction in order to provide a free path for the adhesive agent right up to the web.
  • their common supporting rod can be arranged so that it is displaced in parallel between a first position, in which the cups are located directly below the stationary nozzles, and a second position, in which the cups are located beside the nozzles without obstructing the application of adhesive agent.
  • an adhesive agent is used which is intended to be heated in order to be applicable.
  • an adhesive agent of the last-mentioned type is water.
  • FIG. 11 shows an application device similar to the first one described, but where the nozzle member instead has such a nozzle which emits a jet 61 in the form of a spray and which is shown closer in a schematic representation in Figures 12 and 13, in a rest position and position of application, respectively, in the same way as the first one described in Figures 9 and 10.
  • the nozzle 36 according to Figure 11 is provided with a protecting cover 46 similar to the one described above and operating in the same way.
  • the nozzle 36 has a central channel 62 for supplying a homogenous mixture of adhesive agent and air and includes a rear channel portion 63 and a front channel portion 64.
  • the front channel portion 64 is relatively short and narrow.
  • a central valve needle 65 is arranged for closing and opening the front channel portion 64, and it will then at least partially penetrate into this front channel portion 64, so that there is no considerable risk for clogging.
  • the nozzle 36 is shown in a rest position when supplying air which is distributed around the nozzle in order to subsequently flow out through the outlet port 50 of the protecting cover 46, as described above.
  • the nozzles 36 for applying adhesive agent in the form of a jet in spray form are arranged in a stationary position and perpendicularly or substantially perpendicularly to the web.
  • a collecting cup or the like below the nozzle for collecting adhesive agent which may drip down from the nozzle, particularly after a finished application of adhesive agent.
  • the collecting cup is arranged in a movable way for being displaced laterally so that the jet runs clear of the collecting cup.
  • the device for applying an adhesive agent according to the invention is advantageously utilised also when a web break occurs, wherein the leader provided with adhesive agent is brought to adhere to the already initiated paper roll by means of a wrapping of this. Furthermore, the device can be utilised for attaching the end of a finished reel by means of adhesive agent.
  • Figure 14 shows a reel-up similar to the reel-up according to Figure 1, but being provided with an applicator device 8 according to a second embodiment of the invention.
  • the applicator device 8 includes a beam-formed supporting construction 9, a plurality of nozzle members 14 and a mounting device having three brackets 10 supporting a dust shield 13.
  • the mounting device according to Figure 14 is designed constructionally in a completely different way. It has a horizontal, transversal, fixed supporting rail 70, a supporting rail 71 being movable in. relation to this, a beam-formed, horizontal, transversal nozzle holder 72, being suspended from the movable supporting rail 71 by means of a connecting member 73..
  • the fixed supporting rail 70 is mounted in a fixed manner to the brackets 10 in order to be supported by these. It has an internal, axially extending space being open at the ends of the fixed supporting rail 70 and having an elongated opening on the under side of the fixed supporting rail 70 so that the movable supporting rail 71 is received within the space and upper portions of the connecting member 73 are received within the downwardly-facing opening.
  • the fixed supporting rail 70 can be compared to a U-beam turned upside-down.
  • the movable supporting rail 71 is in the shape of a hollow beam having a rectangular, e.g. square cross-section.
  • the movable supporting rail 71 has two vertical outsides, at which elongated supporting elements 75 are mounted in a fixed manner, one at each side, in order to extend between the two supporting rollers of each pair of supporting rollers 74, wherein the supporting rollers thus run in contact with the horizontal upper and under sides of the supporting elements 75.
  • an axially aligned handle 76 At each end of the movable supporting rail 71, there is an axially aligned handle 76, the cross-section of which having a maximum dimension being smaller than the cross-section of said space, so that one of the handles 76 can be received within the space when the movable supporting rail 71 by means of the other handle 76 is pulled out, in either direction, from the fixed supporting rail 70.
  • the nozzle holder 72 is the shape of a hollow beam having a rectangular, e.g. square cross-section, and supports a plurality of nozzle members 14 on the side wall facing in the running direction of the web.
  • the nozzle holder 72 contains pipes for supplying the nozzles 36 and their protecting covers 46 with air and adhesive agent, as described previously for the first embodiment.
  • Said pipes have connections 77 (see Figure 16) on the outside of one end of the nozzle holder 72 for connection of coupling members of the external pipes for air and adhesive agent.
  • Said coupling members which are not shown, are arranged for being disconnected from the connections 77 when the nozzle holder is to be pulled out of the machine to a maintenance position outside the machine in accordance with Figure 15.
  • the connecting member 73 can form a rigid, i.e. non-pivotal, connection between the movable supporting rail 71 and the nozzle holder 72, e.g. in the form of two connecting rods or plates welded to the ends of the movable supporting rail 71 and the nozzle holder 72.
  • the connecting member 73 ' consists of two pairs of bearing ears 78 being mounted in a fixed manner to the movable supporting rail 71 and the nozzle holder 72, and a bearing axis for each pair of bearing ears, said bearing axis connecting the two bearing ears to each other while forming a horizontal oscillating axis for the nozzle holder 72.
  • the tilting of the nozzle holder 72 into a position of application is force-controlled and is achieved by means of power transmitting devices 79, e.g. two piston cylinders, preferably of the pneumatic type, being mounted on the upper side of the fixed supporting rail 70 and having their piston rods connected to a link arm 80, one for each, being pivotally journalled with its waist portion on the rear side wall of the fixed supporting rail 70 and having its upper end pivotally connected to the piston rods.
  • power transmitting devices 79 e.g. two piston cylinders, preferably of the pneumatic type
  • each link arm 80 carries a roller 84 (see Figure 19) which is arranged for being in rolling contact with the rear side of the nozzle holder 72, facing away from the front side being provided with the nozzles, when the piston cylinders 79 are activated in order to tilt the nozzle holder 72 from its rest position according to Figure 16 into its position of application according to Figure 17.
  • the roller 84 of each link arm 80 is arranged for passing the rear side of the nozzle holder with a clearance sufficiently large so that a longitudinal displacement of the nozzle holder 72 can take place without the roller 84 getting into engagement with it.
  • the movable supporting rail 71 On the upper side of the fixed supporting rail, there are two piston cylinders 81, influencing locking devices 82 for locking the movable supporting rail 71 in the operating position of the applicator device and for releasing the movable supporting rail 71 when maintenance is to be performed on the nozzles 36.
  • the movable supporting rail 71 After having inactivated the locking devices 82 in order to release the movable supporting rail 71, the movable supporting rail 71 can be pulled out of the fixed supporting rail 70 by means of one of the handles 76 in a desired direction so that the parts in question of the applicator device 8 are brought out of the machine into a maintenance position, in which the nozzles 36 can be inspected, cleaned and replaced as required.
  • the movable supporting rail 71 and the nozzle holder 72 form a movable unit which, to a limited extent, is displaceable transversely to the machine direction.
  • a collecting trough 83 is mounted in a fixed manner to said brackets 10 and extends below the nozzles 36 in order to catch adhesive agent, which may drip out of the nozzles 36 when these are in a rest position according to Figure 16.
  • glue nozzles 36 are located near and above the supporting cylinder in the reel-up, where it is usually very dusty and hot. This environment implies that the function of the glue nozzles 36 may deteriorate as time goes on.
  • the use of a protecting cover 46 and a supply of air around the glue nozzle results in a substantial improvement of the function of the glue nozzle 36 but after a longer period of time said difficult environment could result in a glue nozzle being clogged or meeting with another malfunction so that it has to be replaced, for instance.
  • the staff need not to . go inside the machine, where it is usually very dusty and hot, when maintenance is to be performed of the nozzles. Furthermore, it is much safer to perform maintenance outside the machine than inside the machine. Consequently, the working environment of the maintenance staff is improved in several respects.
  • this maintenance can be performed without any problems also when the machine is in operation during a period of time when no adhesive agent needs to be supplied.
  • the maintenance position which the nozzle holder 72 assumes, in Figure 15, the maintenance staff can perform maintenance in a safe way and work in a standing position.
  • the nozzle holder 72 is returned into the operating position in order to subsequently be pulled out at the other side of the machine by means of the other handle 76.
  • the fixed supporting rail can be extended outside the machine at said one side, if desired, so that the nozzle holder 72 and the movable supporting rail 71 can be pulled out at said one side and so that all nozzles become available for maintenance at said one side of the machine.
  • the nozzles can be of any type, and do not necessarily have to be provided with means for cleaning with compressed air, i.e. the shown protecting covers 46 with accessories can be dispensed with if desired, since the concept of a nozzle holder being extractable into a maintenance position outside the machine can be applied to any applicator device, irrespective of the design of the nozzle members with or without the above-described protection of the nozzles. Such a protection, however, is preferred.

Landscapes

  • Coating Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Replacement Of Web Rolls (AREA)
  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Spray Control Apparatus (AREA)

Abstract

La présente invention concerne une buse (36) utilisée pour appliquer un agent adhésif sur une bande (1) de papier comportant un dispositif de protection qui sert à protéger la buse des contaminations au moyen d'air comprimé, ledit dispositif de protection comprenant un élément qui définit un espace (47) entourant la buse, un élément qui envoie de l'air dans l'espace et un élément qui fait sortir l'air dudit espace dans une position centrale à l'avant d'une surface terminale avant (37) de la buse et à une certaine distance de cette dernière (37). Selon l'invention, l'élément qui envoie de l'air est prévu pour envoyer de l'air lorsque la buse se trouve dans un état de repos entre deux applications successives de l'agent adhésif. Cette invention porte également sur un dispositif et un procédé d'application de l'agent adhésif sur une bande de papier au moyen de plusieurs buses de ce type; et sur un procédé permettant d'améliorer la fonction d'utilisation desdites buses.
PCT/SE2004/001143 2003-08-26 2004-07-21 Buse, dispositif et procede d'application d'un agent adhesif sur une bande de papier, procede d'amelioration de la fonction d'utilisation d'une telle buse Ceased WO2005019079A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BRPI0412977-6A BRPI0412977A (pt) 2003-08-26 2004-07-21 bocal, dispositivo, e método para aplicar um agente adesivo sobre uma folha contìnua de papel e método para melhorar a operação funcional do bocal
JP2006524598A JP2007503371A (ja) 2003-08-26 2004-07-21 ノズル、紙ウェブ上へ接着剤を塗布する装置および方法、そのようなノズルの作動機能を改良する方法
DE602004012118T DE602004012118T2 (de) 2003-08-26 2004-07-21 Düse, vorrichtung und verfahren zum aufbringen von klebemittel auf einer papierbahn und verfahren zum verbessern der betriebsfunktionen solch einer düse
EP04749179A EP1660399B1 (fr) 2003-08-26 2004-07-21 Buse, dispositif et procede d'application d'un agent adhesif sur une bande de papier, procede d'amelioration de la fonction d'utilisation d'une telle buse

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
SE0302285-2 2003-08-26
SE0302285A SE0302285L (sv) 2003-08-26 2003-08-26 Munstycke, anordning och sätt för applicering av adhesivt medel på en pappersbana samt sätt att förbättra driftsfunktionen hos ett dylikt munstycke
US50844603P 2003-10-03 2003-10-03
US60/508,446 2003-10-03
US57120804P 2004-05-14 2004-05-14
US60/571,208 2004-05-14

Publications (2)

Publication Number Publication Date
WO2005019079A1 true WO2005019079A1 (fr) 2005-03-03
WO2005019079A8 WO2005019079A8 (fr) 2005-06-30

Family

ID=34222199

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Application Number Title Priority Date Filing Date
PCT/SE2004/001143 Ceased WO2005019079A1 (fr) 2003-08-26 2004-07-21 Buse, dispositif et procede d'application d'un agent adhesif sur une bande de papier, procede d'amelioration de la fonction d'utilisation d'une telle buse

Country Status (6)

Country Link
EP (1) EP1660399B1 (fr)
JP (1) JP2007503371A (fr)
AT (1) ATE387397T1 (fr)
BR (1) BRPI0412977A (fr)
DE (1) DE602004012118T2 (fr)
WO (1) WO2005019079A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047037A1 (de) * 2006-10-02 2008-04-03 Lubrijet Gmbh Vorrichtung zum Auftragen eines Beschichtungsmittels
EP2113479A3 (fr) * 2008-04-29 2010-01-27 Voith Patent GmbH Procédé de transfert d'une bande de matériau déroulante et machine d'enroulement destinée à l'exécution du procédé
WO2011128439A1 (fr) * 2010-04-15 2011-10-20 Planatol System Gmbh Système d'application pour milieux liquides
EP2784217A1 (fr) * 2013-03-27 2014-10-01 Valmet Technologies, Inc. Agencement dans une ligne de production de toile fibreuse et procédé associé
WO2020212033A1 (fr) * 2019-04-18 2020-10-22 Voith Patent Gmbh Dispositif d'application
CN116586255A (zh) * 2023-06-29 2023-08-15 宁波润华全芯微电子设备有限公司 一种可抽出式胶泵系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019110233A1 (de) * 2019-04-18 2020-10-22 Voith Patent Gmbh Aufwickelverfahren
IT202200019533A1 (it) * 2022-09-23 2024-03-23 Tecno Italia Digital S R L Attrezzatura per la smaltatura di manufatti

Citations (7)

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Publication number Priority date Publication date Assignee Title
US5009736A (en) * 1988-11-18 1991-04-23 Oy Tampella Ab Method of and an arrangement for gluing a web to a core in a reeling device
US5299495A (en) * 1991-07-27 1994-04-05 Koenig & Bauer Aktiengesellschaft Cylinder moistening assembly
US5679408A (en) * 1994-05-19 1997-10-21 Valmet Corporation Method and device for application of an adhesive or equivalent onto a moving material web and a nozzle for said device
SE509117C2 (sv) * 1997-04-16 1998-12-07 Valmet Karlstad Ab Anordning vid en rullstol hos en pappersmaskin
US6253818B1 (en) * 1998-01-13 2001-07-03 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Device for changing reels at paper machines
US6311899B1 (en) * 1998-05-17 2001-11-06 Kabushiki Kaisha Santuuru Nozzle device and a gun unit in an apparatus for applying adhesive by spraying in a spiral form
WO2003037765A1 (fr) * 2001-10-30 2003-05-08 Valco Cincinnati, Inc. Dispositif et procede de transfert de bobine de tissu

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5009736A (en) * 1988-11-18 1991-04-23 Oy Tampella Ab Method of and an arrangement for gluing a web to a core in a reeling device
US5299495A (en) * 1991-07-27 1994-04-05 Koenig & Bauer Aktiengesellschaft Cylinder moistening assembly
US5679408A (en) * 1994-05-19 1997-10-21 Valmet Corporation Method and device for application of an adhesive or equivalent onto a moving material web and a nozzle for said device
SE509117C2 (sv) * 1997-04-16 1998-12-07 Valmet Karlstad Ab Anordning vid en rullstol hos en pappersmaskin
US6253818B1 (en) * 1998-01-13 2001-07-03 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Device for changing reels at paper machines
US6311899B1 (en) * 1998-05-17 2001-11-06 Kabushiki Kaisha Santuuru Nozzle device and a gun unit in an apparatus for applying adhesive by spraying in a spiral form
WO2003037765A1 (fr) * 2001-10-30 2003-05-08 Valco Cincinnati, Inc. Dispositif et procede de transfert de bobine de tissu

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047037A1 (de) * 2006-10-02 2008-04-03 Lubrijet Gmbh Vorrichtung zum Auftragen eines Beschichtungsmittels
EP2113479A3 (fr) * 2008-04-29 2010-01-27 Voith Patent GmbH Procédé de transfert d'une bande de matériau déroulante et machine d'enroulement destinée à l'exécution du procédé
WO2011128439A1 (fr) * 2010-04-15 2011-10-20 Planatol System Gmbh Système d'application pour milieux liquides
EP2784217A1 (fr) * 2013-03-27 2014-10-01 Valmet Technologies, Inc. Agencement dans une ligne de production de toile fibreuse et procédé associé
WO2020212033A1 (fr) * 2019-04-18 2020-10-22 Voith Patent Gmbh Dispositif d'application
CN116586255A (zh) * 2023-06-29 2023-08-15 宁波润华全芯微电子设备有限公司 一种可抽出式胶泵系统

Also Published As

Publication number Publication date
JP2007503371A (ja) 2007-02-22
DE602004012118D1 (de) 2008-04-10
DE602004012118T2 (de) 2009-03-05
ATE387397T1 (de) 2008-03-15
EP1660399B1 (fr) 2008-02-27
EP1660399A1 (fr) 2006-05-31
WO2005019079A8 (fr) 2005-06-30
BRPI0412977A (pt) 2006-10-03

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