EP1138624B1 - Vorrichtung und Verfahren zur Herstellung eines Blocks von gefaltetem Material - Google Patents

Vorrichtung und Verfahren zur Herstellung eines Blocks von gefaltetem Material 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
English (en)
French (fr)
Other versions
EP1138624A1 (de
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/en
Application filed by Gevas Verpackungsmaschinen GmbH filed Critical Gevas Verpackungsmaschinen GmbH
Priority to EP01104325A priority Critical patent/EP1138624B1/de
Publication of EP1138624A1 publication Critical patent/EP1138624A1/de
Application granted granted Critical
Publication of EP1138624B1 publication Critical patent/EP1138624B1/de
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. Vorrichtung zur Herstellung eines Blockes (5) aus gefaltetem Material, umfassend:
    Mittel (2, 3) zum Falten einer Bahn (4) zu einem Block (5);
    Mittel (10) zum Halten eines Endes (7, 7') der Bahn (4) von der Bodenlage des Blockes (5), wobei die Haltemittel eine Walze zum Aufwickeln und Abwickeln eines Abschnittes der Bahn (4) umfassen;
    einen automatischen Schneidmechanismus (9, 11, 13) zur Bereitstellung eines Endabschnittes (40) von der untersten Lage des Blockes (5), und
    ein Aufnahmeelement (6), auf dem der Block (5) gebildet wird, wobei das Aufnahmeelement (6) sowohl in eine vertikale als auch eine horizontale Richtung bewegbar ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Schneidmechanismus einen Schlitten (9) und ein Schneidmesser (21) umfasst, das an dem Schlitten (9) bewegbar ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schneidmechanismus einen Klemmbalken (11) zur Fixierung eines Bahnabschnittes an dem Schlitten (9) aufweist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Haltemittel eine Nadelwalze (10) umfassen, die hervorstehende Nadeln (15) besitzt, die in die Bahn (4) einfügbar sind.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Schlitten mit Schlitzen (18) versehen ist, durch die die Nadeln (15) der Nadelwalze (10) während ihrer Drehung eingreifen können.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass Abstreifmittel benachbart zu der Walze (10) der Haltemittel zum Entfernen der Bahn (4) von der Walze (10) vorgesehen sind.
  7. Verfahren zur Herstellung eines Blockes (5) aus gefaltetem Material unter Bereitstellung loser Enden (7, 14), die zur Verbindung zugänglich sind, umfassend die folgenden Schritte:
    Falten einer Bahn (4) auf einem Aufnahmeelement bis ein Abschnitt der Bahn einen gefalteten Block (5) von gewünschter Höhe bildet;
    Zuführen der obersten Bahnlage zu einem Schneidmechanismus (9, 11, 13);
    Schneiden der obersten Bahnlage, um einen Endabschnitt (7, 7') zu bilden;
    Ablegen der Endabschnitte (7, 7') von der Bodenlage des Blockes (5) zumindest teilweise auf der Oberseite des Blockes (5);
    Zurückhalten eines Endabschnittes (7) von der Bodenlage des Blockes (5) an einem Haltemittel (10) bevor mit der Bildung eines neuen Blockes (5) begonnen wird, und
    Abwickeln des auf dem Haltemittel (10) zurückgehaltenen Endabschnittes (7) während der Bildung des neuen Blockes (5).
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass nach der Bildung des Blockes (5) das Aufnahmeelement (6) in horizontale Richtung bewegt wird und der Endabschnitt (7) von der Bodenlage auf die Oberseite des Blockes (5) gelegt wird.
  9. Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die oberste Lage geschnitten wird und ihr Endabschnitt (14) auf einer Seite des Blockes (5) herabfällt.
EP01104325A 2000-03-31 2001-02-23 Vorrichtung und Verfahren zur Herstellung eines Blocks von gefaltetem Material Expired - Lifetime EP1138624B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01104325A EP1138624B1 (de) 2000-03-31 2001-02-23 Vorrichtung und Verfahren zur Herstellung eines Blocks von gefaltetem Material

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
WOPCT/EP00/02873 2000-03-31
PCT/EP2000/002873 WO2001074698A1 (en) 2000-03-31 2000-03-31 Apparatus and method for forming a block of folded material
EP01104325A EP1138624B1 (de) 2000-03-31 2001-02-23 Vorrichtung und Verfahren zur Herstellung eines Blocks von gefaltetem Material

Publications (2)

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

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EP01104325A Expired - Lifetime EP1138624B1 (de) 2000-03-31 2001-02-23 Vorrichtung und Verfahren zur Herstellung eines Blocks von gefaltetem Material

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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
HUP0004788A3 (en) * 1997-06-19 2002-06-28 Bki Holding Corp Wilmington Packaging a strip of material and a method to form it
US6009689A (en) * 1998-02-17 2000-01-04 Stac-Pac Technologies Inc. Packaging a strip of material in layers

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