EP1138624B1 - Appareil et procédé de fabrication d'un bloc de matériau plié - Google Patents

Appareil et procédé de fabrication d'un bloc de matériau plié Download PDF

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Publication number
EP1138624B1
EP1138624B1 EP01104325A EP01104325A EP1138624B1 EP 1138624 B1 EP1138624 B1 EP 1138624B1 EP 01104325 A EP01104325 A EP 01104325A EP 01104325 A EP01104325 A EP 01104325A EP 1138624 B1 EP1138624 B1 EP 1138624B1
Authority
EP
European Patent Office
Prior art keywords
block
web
end portion
sledge
roller
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
EP01104325A
Other languages
German (de)
English (en)
Other versions
EP1138624A1 (fr
Inventor
Thomas Sander
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.)
Gevas Verpackungsmaschinen GmbH
Original Assignee
Gevas Verpackungsmaschinen GmbH
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 PCT/EP2000/002873 external-priority patent/WO2001074698A1/fr
Application filed by Gevas Verpackungsmaschinen GmbH filed Critical Gevas Verpackungsmaschinen GmbH
Priority to EP01104325A priority Critical patent/EP1138624B1/fr
Publication of EP1138624A1 publication Critical patent/EP1138624A1/fr
Application granted granted Critical
Publication of EP1138624B1 publication Critical patent/EP1138624B1/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
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4216—Forming a pile of web folded in zig-zag form
    • B65H2301/42162—Juxtaposing several piles

Definitions

  • the present invention refers to an apparatus and a method for forming a block of folded material.
  • Such an apparatus and method are preferably used in the production of festooned packages which are in particular used in the hygienic industry whereby the web can be made of non-woven fabric or airlaid material.
  • WO 98/58864 discloses a package of festooned web material which is cut into several stacks, whereby the end of each stack is accessible for connection with another end portion of a stack.
  • a strip portion is pulled from underneath the stack.
  • This operation to provide a free end portion has to be carried out manually which means that someone has to grip the end portion and arrange it in the preferred position.
  • This is a serious inconvenience since the festooned packages are preferably used in the hygienic industry where clean handling of the material is crucial and the elimination of manual operations is always considered as a high benefit.
  • it is required to flip the festooned block, which is a time-consuming procedure.
  • US 4 499 707 discloses a method and an apparatus for baling a tow of textile filaments, in which when a container has been filled, the tow is cut automatically in such a way that the end of the cut tow connected to the tow in the container falls on the side of the container. Thus, the end of the tow can be gripped. It is not disclosed to fold a web to a block and the means for provided to insert the tow into the container do not allow an effective handling of the material.
  • the apparatus comprises means for holding an end of the web from the bottom layer of the block and an automatic cutting mechanism for providing an end portion from the uppermost layer of the block, manual handling of the web is eliminated during the whole process. This is particularly important for the production of materials intended for use in hygienic products like diapers and other sanitary products.
  • the automatic handling of the web reduces downtime of the production line and thus increases the efficiency.
  • Holding means are integrated in the apparatus so that the end portion from the bottom layer can be laid on top of the block without flipping the whole block of material.
  • the holding means comprise a roller for winding and unwinding a portion of the web.
  • the block is formed on a receiving element which is movable in horizontal direction to an adjacent processing station, the downtime of the folding mechanism can be minimised during the cutting operation.
  • the cutting mechanism comprises a sledge and a cutting knife being movable on the sledge.
  • the knife can be rolled on the web contacting the sledge to cut the web so that the material stress is minimized during the cutting operation.
  • a clamping bar can be provided for fixing a web portion on the sledge.
  • the holding means comprise a needle roller having protruding needles which are insertable into the web.
  • the protruding needles can be small enough in diameter to avoid any damage, since the web of airlaid material or non-woven fabric is relatively light.
  • the sledge is provided with notches through which the needles of the needle roller can pass during its rotation. This guarantees that the needles are not in contact with the sledge which could cause the breaking of a needle and require to dispose the whole block of web material, if a broken part of the needle gets into the block.
  • strip-off means are provided adjacent to the roller of the holding means, to facilitate the final release of the web from the roller.
  • the web is folded on a receiving element until a portion of the web is layered in form of a block of desired height.
  • the uppermost web layer is fed to a cutting mechanism and is cut, whereby the end of the bottom layer is laid at least partly on top of the block.
  • an end portion from the bottom layer of a block is withheld on a holding means before starting the formation of the block so that during block formation the holding means can hold a sufficient part of the web to arrange an end portion at the side of the block, since the height of the block increases during the block formation.
  • the block In order to assure that the end portion from the bottom of the block is laid down on top of the block, the block is moved in horizontal direction so that the holding and releasing of the end portion results in laying down the end portion on top of the block.
  • the uppermost web layer is cut and its end portion falls down on one side of the block.
  • the web is perforated so that different lines of the web can be pulled from the festooned block, it is preferred to connect the different lines of the block of folded material.
  • Such a splicing operation can only be carried out when the connecting portions have the required length, as pulling off the end portions from the stack could damage the web.
  • the apparatus for forming a block of folded material comprises a frame 1 to which a left folding cylinder 2 and a right folding cylinder 3 are mounted. Between the folding cylinders 2 and 3, a web 4 of airlaid material passes whereby the web 4 is gripped and folded by a rotation of the folding cylinders 2 and 3 to form a block 5.
  • the block 5 is arranged on a receiving element 6 which is movable and preferably formed as a lifting element.
  • the bottom layer of the block 5 has an end portion 7 which is withheld by a tail holding roller 8.
  • a sledge 9 is provided, which is movable in horizontal direction. The sledge 9 is guided on a rail system and moved by an electric drive system (not shown).
  • a needle roller 10 On the upper right side of the block 5 a needle roller 10 is provided. Below the needle roller 10 a clamping bar 11 is provided which is movable in horizontal direction. Before starting with the cutting operation for block 5, the finished block 12 is removed from the position shown in Fig. 1.
  • the starting position for separating the web from a block 5 of folded material is shown in Fig. 2.
  • the block 5 is moved horizontally from the receiving element 6, so that the block 5 passes under the tail holding roller 8 and the end portion 7 is laid down on top of the block 5 (Fig. 3).
  • the horizontal movement of block 5 can either be achieved by moving the receiving element 6 or by using per se known conveyor means.
  • the block 5 is completely moved beyond the tail holding roller 8 so that the end portion 7 from the bottom layer of block 5 is arranged on top of the block 5.
  • the sledge 9 begins to move under the folding cylinders 2 and 3 to the clamping bar 11. Simultaneously, the tail holding roller 8 is moved in the same direction as the sledge (Fig. 5).
  • the sledge 9 is moved under the needle roller 10 and the clamping bar 11 clamps a portion of the web to the sledge 9 (Fig. 6). In this position, the needle roller 10 rotates so that at least some needles are inserted into the web and falling down of the web 4 after cutting is avoided. Then a cutting element 13 is moved on the sledge 9, separating the web 4 at this position.
  • the cutting element 13 can comprise a rolling knife in order to reduce frictional engagement of the cutting element 13 on the sledge 9.
  • the sledge 9 is made of hardened steel to reduce the wear of this part.
  • an end portion 14 is provided after cutting the web 4. Both end portions 7 and 14 are laid down at least partly on top of the block 5, so that they can easily be detected and gripped for further processing of the folded web.
  • the other part of the web 4 forms another end portion 7' which is fixed to the needle roller 10.
  • the sledge 9 returns from the position under the needle roller 10 to the original position shown in Fig. 2.
  • the needle roller 10 turns around its axis to provide an end portion 7'of sufficient length before starting to build another block. This winding process is followed by the folding cylinders which release a sufficient portion of the web. In addition, the tail holding roller 8 is moved to the left side under the needle roller 10.
  • Fig. 9 the starting position for forming a new block of folded material is shown.
  • the new end portion 7' from the bottom of the new block is partly unwound from the needle roller 10 and hangs between the needle roller 10 and the tail holding roller 8. Due to the rotation of the folding cylinders 2 and 3, the new block is built and the receiving element 6 moves downward, pulling a part of the end portion 7' on the side of the new block. After forming the new block, the same position as shown in Fig. 2 is reached and a new cycle begins.
  • Fig. 10 an enlarged view of the main parts of the cutting system is shown in the position similar to Fig. 7.
  • the cutting element 13 is provided with a cutting edge 21 contacting the hardened surface of the sledge 9.
  • the web is clamped between the sledge 9 and the clamping bar 11.
  • the needle roller 10 comprises recessions 22 with needle holders 16 in which needles 15 are mounted, protruding in an inclined direction with respect to the radial direction.
  • the needle roller 10 comprises a cylinder 17 in which the recessions 22 are integrated for locating the needle holders 16. A rotation of the needle roller 10 results in an insertion of some needles 15 into the web 4. This ensures holding of the web 4 by the needle roller 10.
  • the sledge 9 disclosed on the bottom side comprises notches 18 which are slightly wider than the diameter of the needles 15.
  • the needle roller 10 is shown on the upper side of Fig. 11 .
  • the needles 15 pass through the notches 18, so that a contact of the needle 15 with the sledge 9 is avoided.
  • the sledge 9 is driven by belts 19 and 20 which are engaging two toothed wheels driven by a motor (not shown).
  • strip-off means are arranged at the needle roller 10 to assure that the web is released when the needle roller 10 rotates in an unwinding direction.
  • the strip-off means can be made of one or more rollers guiding the web 4 in the desired direction.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (9)

  1. Dispositif pour former un bloc (5) de matériau plié, comprenant :
    des moyens (2, 3) pour plier une bande (4) en un bloc (5) ;
    des moyens (10) pour tenir une extrémité (7, 7') de la bande (4) de la couche inférieure du bloc (5), moyennant quoi les moyens de maintien comprennent un rouleau pour enrouler et dérouler une partie de la bande (4) ;
    un mécanisme de coupe automatique (9, 11, 13) pour fournir une partie d'extrémité (14) de la couche supérieure du bloc (5) ; et
    un élément de réception (6) sur lequel le bloc (5) est formé, moyennant quoi l'élément de réception (6) est mobile à la fois dans des directions verticale et horizontale.
  2. Dispositif selon la revendication 1, caractérisé en ce que le mécanisme de coupe comprend un traíneau (9) et un couteau (21) pouvant être déplacé sur le traíneau (9).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le mécanisme de coupe comprend une barre de serrage (11) pour fixer une partie de bande sur le traíneau (9).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de maintien comprennent un rouleau à aiguilles (10) comportant des aiguilles saillantes (15) qui peuvent être insérées dans la bande (4).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le traíneau (9) est pourvu d'entailles (18) à travers lesquelles les aiguilles (15) du rouleau à aiguilles (10) peuvent passer pendant sa rotation.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que des moyens d'enlèvement sont prévus adjacents au rouleau (10) des moyens de maintien pour retirer la bande (4) du rouleau (10).
  7. Procédé pour former un bloc (5) de matériau plié fournissant des extrémités flottantes (7, 14) accessibles pour liaison comprenant les étapes suivantes :
    le pliage d'une bande (4) sur un élément de réception jusqu'à ce qu'une partie de la bande forme un bloc plié (5) de hauteur souhaitée ;
    l'avance de la couche de bande supérieure vers un mécanisme de coupe (9, 11, 13) ;
    la coupe de la couche de bande supérieure afin de former une partie d'extrémité (7, 7') ;
    la mise en place des parties d'extrémité (7, 7') de la couche inférieure du bloc (5) au moins partiellement sur le bloc (5) ;
    le maintien d'une partie d'extrémité (7) de la couche inférieure du bloc (5) sur des moyens de maintien (10) avant de commencer à former un nouveau bloc (5) ; et
    le déroulement de la partie d'extrémité (7) qui est maintenue sur les moyens de maintien (10) pendant la formation du nouveau bloc (5).
  8. Procédé selon la revendication 7, caractérisé en ce que, après la formation du bloc (5), l'élément de réception (6) est déplacé dans une direction horizontale et la partie d'extrémité (7) de la couche inférieure est disposée sur le bloc (5).
  9. Procédé selon la revendication 7 ou 8, caractérisé en ce que la couche de bande supérieure est coupée et sa partie d'extrémité (14) tombe d'un côté du bloc (5).
EP01104325A 2000-03-31 2001-02-23 Appareil et procédé de fabrication d'un bloc de matériau plié Expired - Lifetime EP1138624B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01104325A EP1138624B1 (fr) 2000-03-31 2001-02-23 Appareil et procédé de fabrication d'un bloc de matériau plié

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
WOPCT/EP00/02873 2000-03-31
PCT/EP2000/002873 WO2001074698A1 (fr) 2000-03-31 2000-03-31 Appareil et procede de formation d'un bloc de materiau plie
EP01104325A EP1138624B1 (fr) 2000-03-31 2001-02-23 Appareil et procédé de fabrication d'un bloc de matériau plié

Publications (2)

Publication Number Publication Date
EP1138624A1 EP1138624A1 (fr) 2001-10-04
EP1138624B1 true EP1138624B1 (fr) 2004-05-12

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Application Number Title Priority Date Filing Date
EP01104325A Expired - Lifetime EP1138624B1 (fr) 2000-03-31 2001-02-23 Appareil et procédé de fabrication d'un bloc de matériau plié

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103787132B (zh) * 2014-02-25 2016-05-18 诸暨市荣恩针纺织有限公司 一种新型折叠剪裁机的夹布装置
CN110482308A (zh) * 2019-07-17 2019-11-22 徐州祥华丝绸有限公司 一种丝织品制造自动折腾收集的放置装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450776A1 (fr) * 1979-03-09 1980-10-03 Rhone Poulenc Textile Procede et dispositif de bambanage de cable de filaments textiles
ATE192117T1 (de) * 1997-06-19 2000-05-15 Stac Pac Tech Inc Verpacken einer materialbahn
US6009689A (en) * 1998-02-17 2000-01-04 Stac-Pac Technologies Inc. Packaging a strip of material in layers

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EP1138624A1 (fr) 2001-10-04

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