WO1996033122A1 - Procede et dispositif de refente d'une bande de papier en sens travers - Google Patents

Procede et dispositif de refente d'une bande de papier en sens travers Download PDF

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Publication number
WO1996033122A1
WO1996033122A1 PCT/DE1996/000646 DE9600646W WO9633122A1 WO 1996033122 A1 WO1996033122 A1 WO 1996033122A1 DE 9600646 W DE9600646 W DE 9600646W WO 9633122 A1 WO9633122 A1 WO 9633122A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
paper web
conveyor
cutting tool
feed direction
Prior art date
Application number
PCT/DE1996/000646
Other languages
German (de)
English (en)
Inventor
Peter Hannemann
Original Assignee
Böwe Systec AG
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 Böwe Systec AG filed Critical Böwe Systec AG
Priority to DE59603008T priority Critical patent/DE59603008D1/de
Priority to JP8531394A priority patent/JPH11503704A/ja
Priority to EP96909042A priority patent/EP0822915B1/fr
Publication of WO1996033122A1 publication Critical patent/WO1996033122A1/fr

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
    • B65H20/00—Advancing webs
    • B65H20/30—Arrangements for accumulating surplus web
    • B65H20/32—Arrangements for accumulating surplus web by making loops
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5121—Bending, buckling, curling, bringing a curvature
    • B65H2301/51212—Bending, buckling, curling, bringing a curvature perpendicularly to the direction of displacement of handled material, e.g. forming a loop

Definitions

  • the invention relates to a method and an apparatus for cross-cutting a paper web according to the preambles of claims 1 and 3.
  • the paper web is to be cut into individual sheets of paper with a pre-printing height, which e.g. can be between 3 "and 12".
  • a pre-printing height which e.g. can be between 3 "and 12".
  • there are automatic cutters which, in addition to a cutting tool which is used for cross-cutting the paper web, are also equipped with cutting tools which cut off the perforated edges of the paper web or can also split these in the longitudinal direction.
  • Such a cutting machine which has so far proven itself in practice, is in the prospectus
  • This automatic cutting machine processes zigzag folded, printed paper webs.
  • a cutting tool consisting of a stationary cutting knife and a cutting knife which can be moved up and down.
  • a first conveyor which is designed as a so-called tractor, is arranged in front of this cutting tool. This consists of two endless conveyor belts arranged parallel to each other, which engage with their spikes in perforations on both edges of the paper web.
  • This well-known automatic cutting machine works according to the start-stop principle.
  • the tractor conveys the paper web by a length corresponding to the format height. Then the tractor stops and the cutting knife of the cutting tool lead the
  • the paper web must be stopped before each cut
  • Fractions of a second can be accelerated back to full conveyor speed and more than
  • the invention is therefore based on the object
  • the novelty according to the invention is that the paper web continuously with a constant conveying speed into
  • the novelty according to the invention in the fact that in the area between the first conveyor, which is continuously driven during operation of the device, and the cutting tool, a clamping device driven synchronously with the latter device is provided, by means of which the immediately adjacent to the cutting tool, lying in front of this area of the paper web can be clamped for the duration of the cutting process until the passage between the cutting knives is free again, and that in the area
  • a free space is provided between the first conveying device and the clamping device, in which space the paper web section continuously supplied during the cutting process by the first conveying device is in the form of a theoretically straight one
  • the invention is therefore based on the idea of continuously moving the paper web at a constant speed by means of a first conveyor.
  • first conveyor continuously requests paper web.
  • This re-conveyed paper web section is stored in front of the clamping device in the form of a small loop or shaft which extends transversely to the feed direction. A certain tension builds up in the loop during this storage. This tension causes the area of the paper web adjoining the cutting tool to become the cutting tool after the clamping device is released emotional.
  • This movement can advantageously be carried out by a continuously driven second provided between the clamping device and the cutting tool
  • the conveying speed is greater than that of the first conveyor, are supported.
  • only slight acceleration forces occur, on the one hand because only that during the
  • the loop is deliberately only kept so large that it receives the paper section supplied during the cutting process and that a kind of kink tension is created in the loop which, after the clamping device is released, feeds the free end of the paper web facing the cutting tool .
  • the invention enables the
  • FIG. 1 shows a first exemplary embodiment of a device for cross-cutting a paper web in longitudinal section
  • FIG. 2 shows a schematic side view showing the drive connections
  • FIG. 3 shows a second embodiment in longitudinal section
  • FIG. 4 shows a schematic side view of this embodiment, showing the drive connections
  • FIG. 5 shows a partial longitudinal section of a third exemplary embodiment
  • FIG. 6 shows a partial top view in the direction VI of FIG. 5.
  • the device for cross cutting a paper web has a cutting tool 1 with a stationary cutting knife 2 and a cutting knife 3 which can be moved up and down.
  • a first conveyor 4 is provided at a distance from the cutting tool 1 and, in this exemplary embodiment, is designed as a so-called tractor.
  • the tractor consists of two conveyor belts 5 arranged parallel to one another, which engage with their spikes 6 in perforations on both longitudinal edges of the paper web 7.
  • the conveyor 4 is continuously driven with a 4 m starting speed V1, which e.g. corresponds to the delivery speed of an upstream Lasei printer, not shown.
  • V1 a 4 m starting speed
  • a clamping device B driven synchronously with the latter is provided.
  • This clamping device 8 is preferably arranged in the vicinity of the cutting tool 1, ie its distance from the cutting tool 1 is less than its distance from the conveying device 4. Between the clamping device 8, which will be described in more detail below, and the cutting tool 1 is preferably immediately adjacent to this one
  • a third conveying device 10 is expediently provided behind the cutting tool 1, which is also driven continuously and at a conveying speed V2 that corresponds to the conveying speed V2 of the second conveying device 9.
  • the clamping device 8 comprises two clamping jaws 11 which are arranged at a distance from one another in the transverse direction of the paper web 7 and of which only one is shown in the drawing. These jaws 11 interact with a stationary base 12.
  • Each clamping jaw 11 is arranged on one (lower) end of a plunger 13 movable transversely to the feed direction A of the paper web 7, the other (upper) end of which carries a roller 14 which interacts with a cam disk 15.
  • the cam disk 15 can be driven synchronously with the cutting tool 1.
  • a common belt drive 16 or the like can be provided according to FIG. 2, which is driven by the motor M2.
  • the belt drive 16 drives the cam disk 15 via the wheel 17 and the movable cutting knife 3 via the wheel 18 and the crank 19.
  • the belt drive 16 is expediently driven continuously, but it can also be intermittent.
  • the second conveying device 9 and the third conveying device 10 expediently each have a continuously drivable conveying roller 20 or 21 and at least one pressure roller 22, 23 which is axially parallel thereto and which rests on the conveying roller 20 or 21 under elastic pretension 24.
  • the elastic bias 24 is preferably adjustable.
  • the two conveyor rollers 20, 21 can be driven, for example, by a third one
  • This third motor M3 gives the
  • Conveyor rollers 20, 21 have a conveying speed V2 that is, for example, four times the conveying speed V1 of the first conveying device 4.
  • a guide plate 26 can first be provided, which is opposite the one Conveyor elements 5 of the first conveyor device 4 and the clamping elements 11, 12 of the clamping device ⁇ tangent plane EE is arched transversely to the feed direction A.
  • the bulge 26a takes place upwards.
  • blowing nozzles 27 can also be provided for generating the force P. The air streams emerging from the blowing nozzles 27 are appropriately controlled so that they only ever exit the blowing nozzles 27 when the
  • the arching of the paper web section 7a can also be effected by means of plungers or the like, not shown, which are movable transversely to the feed direction A and are driven synchronously with the clamping device 8.
  • the first conveyor 4 is continuously driven at a conveying speed V1 and the second and third conveying devices 9 and 10 at a higher conveying speed V2.
  • the movable cutting knife 3 can also be driven continuously, so that
  • the clamping device 8 is also opened, so that the paper web 7 is moved further in the direction A by the conveying devices 4 and 9 and, in the case of larger format heights, also by the conveying device 10.
  • Arching favors and ensures that the arching takes place in a predetermined direction, namely upwards. During the bulge arises in the
  • Loop 7a a tension, similar to a buckling bar.
  • the clamping device 8 also opens in that the area 15a of the cam disc 15 reaches the area of the roller 14. As soon as the clamping device 8 is opened, the second conveying device 9 conveys the end of the paper web adjoining the cutting device 1 at a conveying speed V2
  • the loop 7a cannot expand backwards because paper web is constantly being requested by the first conveying device 4.
  • gravity can also be effective, which presses the loop 7a downward and thereby further moves the paper web in the direction of the cutting tool 1.
  • the second conveyor 9 thus only ever needs to move the small paper web section 7a stored in the form of the loop, this further movement is favored by the tension built up during the clamping and gravity.
  • the paper web can also be held in a different manner, for example by means of clamping pliers which engage on the edge of the paper web. The only decisive factor is that the clamping device is driven synchronously with the cutting tool in such a way that the clamping device holds the paper web in place during the cutting process.
  • the cutting tool 1 ' has a stationary cutting knife 2, which cooperates with a rotating cutting knife 3 '.
  • a rotating cutting knife 3 ' has the advantage over an up and down moving cutting knife that the passage between the cutting knives 3' and 2 is released again immediately after the cut, while with an up and down moving knife this after the end of the cut must move up again.
  • the cutting performance of the device can be increased even more by the rotating knife 3 'because the time during which the paper web has to be stopped by the clamping device ⁇ is shortened.
  • the first conveyor device 4 has a continuously driven conveyor roller 28 and at least one elastically pressed pressure roller 29.
  • Such a conveyor 4 ' can also be used to feed a paper web which has no perforations at its longitudinal edges.
  • the guide plate 26 ' is further bulged downward relative to the plane E-E. This has the advantage that the bulging of the loop 7a formed during the clamping of the paper web is supported by gravity.
  • blowing nozzles 27 can also be provided, similar to the previous exemplary embodiment. Similar to the previous exemplary embodiment, in the exemplary embodiment shown in FIGS. 3 and U, a free space 30 is provided between the first conveying device 4 'and the clamping device 8, in which the paper web section continuously requested during the cutting process by the first conveying device 4' The shape of the loop 7a can bulge.
  • the drive connections are shown in FIG.
  • a common drive motor M1 is provided for driving the first conveyor 4 ', the second conveyor 9 and the third conveyor 10.
  • a corresponding translation ensures that the conveying speed V2 of the second and third conveying devices 9 and 10 is greater than the conveying speed V1 of the first conveying device 4 '.
  • the clamping device 8 and the cutting tool 1 ' are driven by a common belt drive 16 via the motor M2, similarly to the previous exemplary embodiment.
  • the particularly advantageous embodiment of the area in which the loops are formed makes an important contribution to increasing the cutting performance. It was found that unacceptable at paper feed speeds from about 0.8 m / s (which corresponds to about 38000 cuts per hour at a pre-print height of 3 ")
  • the guide plate 26 is bulged upwards, the bulging being achieved by an angling 26b of the guide plate.
  • the bottom plate 26 is also provided with a plurality of openings 36, e.g. circular holes. Through these openings 36, air can enter quickly between the loop and the guide plate during the arching of the loop, but in particular the air can escape quickly from the space between the loop 7a and the guide plate 26 if after
  • Conveyor can not propagate the tension exerted on the paper web in full 4m to the first conveyor 4.
  • baffles 37, 38 are for
  • the guide plates 37, 38 ensure that the loop formation always takes place approximately at the same point and that the loop does not move forwards or backwards in the feed direction A. Especially through the
  • Baffles 37, 38 make the loop formation reproducible. In order to be able to influence the formation of the loop, it is also expedient that the inclination of each guide plate 37, 38 with respect to the guide plate 26 is adjusted. is cash.
  • the guide plates 37, 38 are each pivotable about an axis 39, 40 running transversely to the feed direction A and can be locked by a device, not shown.
  • Damping hood 41 should be arranged at a greater distance from the loop 7a so that there is still sufficient air space between the loop 7a and the interior of the damping hood.
  • the damping hood acts as an air chamber, which dampens the vibrations that occur when the loop is formed at high speeds, and on the other hand, it also serves for sound insulation.
  • Loop formation which, according to experience, is a prerequisite for high cutting accuracy with tolerances in the tenths of a millimeter range.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Abstract

Selon un procédé de refente d'une bande de papier en sens travers, la bande de papier est déplacée d'une longueur prédéterminée dans son sens longitudinal, par rapport à un outil de coupe stationnaire, entre deux étapes de coupe successifs, et est arrêtée pendant l'étape de coupe. Selon l'invention, la bande de papier est acheminée en continu à vitesse constante jusqu'à proximité de l'outil de coupe. Seule la zone de la bande de papier jouxtant immédiatement l'outil de coupe et se trouvant devant ledit outil est maintenue pendant la durée de l'étape de coupe. A cet effet, pendant l'étape de coupe, la section de la bande de papier acheminée à la suite sous forme de boucle (vague) bombée vers l'extérieur transversalement par rapport au sens de défilement théoriquement droit est stockée. Après achèvement de l'étape de coupe, la section stockée est transportée jusqu'à l'outil de coupe à une plus grande vitesse comparativement à la vitesse d'acheminement contante.
PCT/DE1996/000646 1995-04-21 1996-04-04 Procede et dispositif de refente d'une bande de papier en sens travers WO1996033122A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59603008T DE59603008D1 (de) 1995-04-21 1996-04-04 Verfahren und vorrichtung zum querschneiden einer papierbahn
JP8531394A JPH11503704A (ja) 1995-04-21 1996-04-04 ペーパーウエブを横断ちするための装置
EP96909042A EP0822915B1 (fr) 1995-04-21 1996-04-04 Procede et dispositif de refente d'une bande de papier en sens travers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29506784 1995-04-21
DE29506784.5 1995-04-21

Publications (1)

Publication Number Publication Date
WO1996033122A1 true WO1996033122A1 (fr) 1996-10-24

Family

ID=8007149

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/000646 WO1996033122A1 (fr) 1995-04-21 1996-04-04 Procede et dispositif de refente d'une bande de papier en sens travers

Country Status (6)

Country Link
EP (1) EP0822915B1 (fr)
JP (1) JPH11503704A (fr)
CA (1) CA2212234A1 (fr)
DE (2) DE59603008D1 (fr)
ES (1) ES2136982T3 (fr)
WO (1) WO1996033122A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0760348A2 (fr) * 1995-09-02 1997-03-05 Wella Aktiengesellschaft Appareil et procédé pour transporter et couper des matériaux en forme de bandes
WO2002016243A2 (fr) * 2000-08-24 2002-02-28 Moore North America, Inc. Massicot pour bande continue d'alimentation
EP1486422A2 (fr) * 2003-06-10 2004-12-15 SII P & S Inc. Appareil d'activation thermique pur une feuille adhésive et thermosensible
DE102008006562A1 (de) 2008-01-29 2009-10-15 Böwe Systec AG Verfahren und Vorrichtung zum Transport von Papier in einer Papierhandhabungsanlage von einem ersten Transport an einen zweiten Transport

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1013194C2 (nl) * 1999-10-01 2001-04-03 Aremberg Beheer B V I O Werkwijze voor het bufferen van bandmateriaal, toevoerinrichting voor bandmateriaal en inrichting voor het met bandmateriaal omgeven van producten.
US7124671B2 (en) 2003-05-06 2006-10-24 Pitney Bowes Inc. Method and device for reducing web breakage in a web cutter
ITTO20030371A1 (it) 2003-05-20 2004-11-21 Tecnau Srl Equipaggiamento di taglio per moduli continui.
US20060156876A1 (en) 2005-01-19 2006-07-20 Pitney Bowes Incorporated Motion control system and method for a high speed inserter input
DE102019006046A1 (de) * 2019-08-27 2021-03-04 Mühlbauer Gmbh & Co. Kg Vorrichtung und Verfahren zum intermittierenden Fördern einer Warenbahn längs einer Förderrichtung und zum Schneiden der Warenbahn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB950654A (en) * 1961-05-17 1964-02-26 Thompson Jack Evans Improvements in or relating to the manufacture of sheets from a reel of paper
DE3131101A1 (de) * 1980-09-04 1982-04-01 Vits-Maschinenbau Gmbh, 4018 Langenfeld Verfahren zum querschneiden einer warenbahn und stapeln der geschnittenen bogen und schlagmesserquerschneider fuer warenbahnen mit bogenablage
JPS58140755A (ja) * 1982-02-16 1983-08-20 Fuji Xerox Co Ltd パンチ機構付複写機
JPS59149265A (ja) * 1983-02-10 1984-08-27 Ricoh Co Ltd 記録装置の用紙搬送装置
JPH04358658A (ja) * 1990-08-28 1992-12-11 Mutoh Ind Ltd 記録装置用ロール紙搬送装置
EP0639521A1 (fr) * 1993-08-16 1995-02-22 Bayer Corporation Procédé et appareil pour accumuler temporairement des médias

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB950654A (en) * 1961-05-17 1964-02-26 Thompson Jack Evans Improvements in or relating to the manufacture of sheets from a reel of paper
DE3131101A1 (de) * 1980-09-04 1982-04-01 Vits-Maschinenbau Gmbh, 4018 Langenfeld Verfahren zum querschneiden einer warenbahn und stapeln der geschnittenen bogen und schlagmesserquerschneider fuer warenbahnen mit bogenablage
JPS58140755A (ja) * 1982-02-16 1983-08-20 Fuji Xerox Co Ltd パンチ機構付複写機
JPS59149265A (ja) * 1983-02-10 1984-08-27 Ricoh Co Ltd 記録装置の用紙搬送装置
JPH04358658A (ja) * 1990-08-28 1992-12-11 Mutoh Ind Ltd 記録装置用ロール紙搬送装置
EP0639521A1 (fr) * 1993-08-16 1995-02-22 Bayer Corporation Procédé et appareil pour accumuler temporairement des médias

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 256 (P - 236) 15 November 1983 (1983-11-15) *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 280 (M - 347) 21 December 1984 (1984-12-21) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 226 (M - 1405) 10 May 1993 (1993-05-10) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0760348A2 (fr) * 1995-09-02 1997-03-05 Wella Aktiengesellschaft Appareil et procédé pour transporter et couper des matériaux en forme de bandes
EP0760348A3 (fr) * 1995-09-02 1998-08-12 Wella Aktiengesellschaft Appareil et procédé pour transporter et couper des matériaux en forme de bandes
WO2002016243A2 (fr) * 2000-08-24 2002-02-28 Moore North America, Inc. Massicot pour bande continue d'alimentation
WO2002016243A3 (fr) * 2000-08-24 2002-09-06 Moore North America Inc Massicot pour bande continue d'alimentation
EP1486422A2 (fr) * 2003-06-10 2004-12-15 SII P & S Inc. Appareil d'activation thermique pur une feuille adhésive et thermosensible
EP1486422A3 (fr) * 2003-06-10 2005-06-01 SII P & S Inc. Appareil d'activation thermique pur une feuille adhésive et thermosensible
US7173642B2 (en) 2003-06-10 2007-02-06 Seiko Instruments Inc. Thermal activation apparatus for a heat-sensitive adhesive sheet
DE102008006562A1 (de) 2008-01-29 2009-10-15 Böwe Systec AG Verfahren und Vorrichtung zum Transport von Papier in einer Papierhandhabungsanlage von einem ersten Transport an einen zweiten Transport

Also Published As

Publication number Publication date
EP0822915A1 (fr) 1998-02-11
EP0822915B1 (fr) 1999-09-08
DE29607062U1 (de) 1996-06-13
JPH11503704A (ja) 1999-03-30
DE59603008D1 (de) 1999-10-14
CA2212234A1 (fr) 1996-10-24
ES2136982T3 (es) 1999-12-01

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