EP0822915B1 - 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
EP0822915B1
EP0822915B1 EP96909042A EP96909042A EP0822915B1 EP 0822915 B1 EP0822915 B1 EP 0822915B1 EP 96909042 A EP96909042 A EP 96909042A EP 96909042 A EP96909042 A EP 96909042A EP 0822915 B1 EP0822915 B1 EP 0822915B1
Authority
EP
European Patent Office
Prior art keywords
cutting
paper web
guide plate
conveyor
loop
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
EP96909042A
Other languages
German (de)
English (en)
Other versions
EP0822915A1 (fr
Inventor
Peter Hannemann
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.)
Boewe Systec AG
Original Assignee
Boewe Systec AG
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Filing date
Publication date
Application filed by Boewe Systec AG filed Critical Boewe Systec AG
Publication of EP0822915A1 publication Critical patent/EP0822915A1/fr
Application granted granted Critical
Publication of EP0822915B1 publication Critical patent/EP0822915B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00Advancing webs
    • B65H20/30Arrangements for accumulating surplus web
    • B65H20/32Arrangements for accumulating surplus web by making loops
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01Means for holding or positioning work
    • B26D7/02Means for holding or positioning work with clamping means
    • B26D7/025Means for holding or positioning work with clamping means acting upon planar surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04Delivering 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
    • B65H35/06Delivering 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/50Auxiliary process performed during handling process
    • B65H2301/51Modifying a characteristic of handled material
    • B65H2301/512Changing form of handled material
    • B65H2301/5121Bending, buckling, curling, bringing a curvature
    • B65H2301/51212Bending, 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 device for cross cutting a paper web with a stationary cutting tool, which has cooperating cutting knives with one arranged in front of the cutting tool during the Operation of the device continuously driven first conveyor, by means of which the paper web between two successive cutting operations is each supplied in a predetermined length with a in the area between the first conveyor and the Cutting tool provided, driven synchronously with this Clamping device, by means of which the immediate adjacent to the cutting tool, lying in front of this Area of the paper web for the duration of the cutting process can be clamped until the passage between the Cutting knives is free again, and with one in the area between the first conveyor and the clamping device provided space in which the during the cutting process from the first conveyor continuously fed paper web section in the form of a theoretically straight versus Extend the feed direction transversely to the arched loop can.
  • the paper web When post-processing printed paper webs, e.g. of computer printouts, the paper web is said to be in cut individual sheets of paper with a form height e.g. can be between 3 "and 12".
  • a form height e.g. can be between 3 "and 12".
  • automatic cutting machines that are next to one Cutting tool, which is used for cross cutting the paper web is also equipped with cutting tools, which cut off the perforated edges of the paper web or can also split them lengthways.
  • a such cutting machine that has been used in practice has proven itself excellently is in the prospectus B ⁇ WE SYSTEC AG, D-86135 Augsburg, "B ⁇ WE automatic cutting machine 310 ", 3/94. This automatic cutting machine processes zigzag folded, printed paper webs.
  • A, 31 31 101 is a device for cross cutting a paper web of the type mentioned known in which one in front of the clamping device second conveyor, consisting of a continuous driven upper conveyor roller and one from below this pressable lower conveyor roller, which can be lowered from the upper conveyor roller is provided.
  • the conveyor roller is synchronized with the drive of the clamping device or the cutting knife of the kind that before a cut first the paper web in the clamping device clamped and at the same time the lower one Conveyor roller is lowered down. Because of that comes the paper web to a standstill and also the second Conveyor no longer acts on the paper web on.
  • the invention is therefore based on the object Device for cross cutting a paper web to create the kind mentioned at the beginning, with which also at very high paper feed speeds and high cutting frequency a high cutting accuracy achieved and at the same time the noise pollution is significant is reduced.
  • the damping hood is in combination with the Openings provided with guide plate also very high paper feed speeds and high Cutting frequencies for great cutting accuracy. Even at paper feed speeds over 0.8 m / sec. and a cutting frequency of over 10 cuts / sec. are cutting accuracies in the tenths of a millimeter range achieved with a tolerance of ⁇ 0.3 mm. This is due to the fact that inside the damping hood defined and constant air pressure conditions are present during the loop formation Environmental influences, such as air currents, heat effects and the like. Keep away from the loop. Also be Vibrations of the loop are damped and as a result an orderly, reproducible loop formation is ensured. The arrangement is also in this context of the perforated guide plate from Importance.
  • the guide plate ensures that the loop only ever in one direction can train, the breakthroughs being crucial Importance. Because of the breakthroughs air in during the swirling of the loop the space between the loop and the guide plate come in quickly, but especially the air escape quickly from this room again when after End the cutting process through the loop the second conveyor is pulled flat again.
  • the invention enables the cutting performance approx. 80,000 cuts / hour at a form height of 3 ". Thanks to the high cutting performance it is possible to do the cross cutting on line afterwards perform a laser printer, which has other advantages brings with it.
  • the device for cross cutting a paper web has according to the embodiment shown in Figures 1 and 2 a cutting tool 1 with a stationary cutting knife 2 and an up and down movable cutting knife 3 on.
  • a first is at a distance from the cutting tool 1
  • Conveyor 4 is provided, which in this embodiment is designed as a so-called tractor.
  • the tractor consists of two arranged parallel to each other Conveyor belts 5 with their spikes 6 in perforations engage on both longitudinal edges of the paper web 7.
  • the conveyor 4 is continuously with a Peripheral speed V1 driven, e.g. the delivery speed an upstream, not shown Corresponds to the laser printer.
  • V1 driven Peripheral speed
  • This clamping device 8 is preferably nearby of the cutting tool 1, i.e. their distance from the cutting tool 1 is less than its distance to the conveyor 4.
  • a third is expedient behind the cutting tool 1 Conveyor 10 is provided, which is also continuous is driven at a conveying speed V2, the conveyor speed V2 of the second Conveyor 9 corresponds.
  • the clamping device 8 comprises two jaws 11, the in the transverse direction of the paper web 7 at a distance from one another are arranged and of which only one in the drawing is shown. These jaws 11 act with a stationary pad 12 together. Each jaw 11 is at one (lower) end of a cross to the feed direction A arranged the paper web 7 movable plunger 13, whose other (upper) end carries a roller 14, which cooperates with a cam disc 15.
  • the cam disc 15 can be driven synchronously with the cutting tool 1.
  • a common Belt drive may be provided.
  • the belt drive also drives the movable cutting knife 3.
  • the belt drive is expediently driven continuous, but it can also be intermittent be.
  • the second conveyor 9 and the third conveyor 10 appropriately each have a continuous drivable conveyor roller 20 or 21 and at least an axially parallel pressure roller 22, 23 on the under elastic prestress 24 on the conveyor roller 20 or 21 is present.
  • the elastic bias 24 is preferred adjustable.
  • the drive of the two conveyor rollers 20, 21 can for example by a third Engine. This third engine gives the Conveyor rollers 20, 21 a conveyor speed V2, the for example four times the conveying speed V1 of the first conveyor 4.
  • a bulging device 25 is provided, which on the paper web 7, at least at times a cross to the feed direction A directed force P exerts. If the feed direction A, as in the embodiment shown in Figures 1 and 2 the case is essentially horizontal, then the force P should be directed upwards. This has the advantage that the feed during the cutting process stored paper web section 7a after the release of the clamping device 8 also by Gravity is supported, as detailed below is described.
  • a guide plate can first be used to generate the force P.
  • 26 may be provided, which compared to the Conveyor elements 5 of the first conveyor 4 and Clamping elements 11, 12 tangential to the clamping device 8 Level E-E arched transversely to feed direction A. is. In the illustrated embodiment the bulge 26a takes place upwards.
  • the movable cutting knife 3 can are also driven continuously so that alternately a cutting process is carried out or the passage between the cutting blades 2 and 3 is released is. While the latter is the case, too the clamping device 8 opened so that the paper web 7 by the conveyors 4 and 9 and larger ones Format heights also by the conveyor 10 in Direction A is moved on.
  • the conveyor rollers 20, 21 of the second conveyor 9 and the third conveyor 10 continue to rotate.
  • the movable cutting knife 3 goes down and cuts a paper sheet 7b in the desired format height, which is immediately carried out by the third conveyor 10 is moved on.
  • the conveyor rollers 20, 21 have one smooth steel surface and the elastic preload 24 is adjusted so that the conveyor rollers 20, 21st can continue to rotate while clamping the paper web, without damaging it.
  • the second conveyor promotes 9 the end adjacent to the cutting device 1 the paper web with a conveying speed V2 further, which is higher than the conveying speed V1 the first conveyor 4.
  • This will stored loop 7a removed.
  • the moving on of the paper web section stored in the form of the loop 7a is also generated by the in the loop Tension favors the free end of the paper web pushes towards the cutting tool 1.
  • the loop 7a cannot expand backwards, because paper web constantly through the first conveyor 4 is funded.
  • gravity will still take effect, which is the loop 7a pushes down and thereby the paper web in Moved towards the cutting tool 1.
  • the second Conveyor 9 therefore only needs that in shape the loop stored small paper web section 7a to move further, this further movement by the voltage built up during the clamping and the Gravity is favored.
  • Holding the paper web can be done in other ways done, for example, by clamps on the edge attack the paper web. The only thing that matters is that the clamping device is synchronous with the cutting tool is driven so that the clamping device holds the paper web during the cutting process.
  • the guide plate 26 is curved upwards, the Bulging through an angled portion 26b of the guide plate is achieved.
  • the guide plate 26 is still with a Plurality of openings 36, e.g. circular holes, Mistake. Through these openings 36 can during Bulge of the loop air between the loop and the guide plate can enter quickly, in particular however, the air from the space between the loop 7a and escape the guide plate 26 quickly if after Completion of the cutting process through the loop second conveyor 9 is pulled flat again.
  • the paper web 7 comes on the bend 26b to the facility.
  • Friction is achieved that the second Conveyor tension exerted on the paper web not fully up to the first conveyor 4 can reproduce.
  • baffles influencing the formation of the loop 37, 38 provided in the front and rear area of the guide plate 26 inclined opposite one another above it.
  • These baffles 37, 38 are for Support for even loop formation.
  • the guide plates 37, 38 ensure that the loops are always in roughly the same place and that the loop is not in the feed direction A walks forward or backward.
  • the Baffles 37, 38 make the loop formation reproducible.
  • the inclination of each baffle 37, 38 adjustable relative to the guide plate 26 is.
  • the guide plates 37, 38 by one in each case transverse to the feed direction A.
  • the room is above the Guide plates 26 and above the guide plates 37, 38 enclosed by a damping hood 41.
  • the Damping hood 41 should be at a greater distance be arranged by the loop 7a so that it is still sufficient Air space between the loop 7a and the inside of the Damping hood is present.
  • the damping hood acts on the one hand as an air chamber, which is used for loop formation vibrations occurring at high speeds dampens and it also serves for sound insulation.

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)

Claims (4)

  1. Appareil de coupe transversale d'une bande de papier (7), comprenant un outil de coupe (1) stationnaire, présentant des lames tranchantes (2, 3) coopérantes, un premier dispositif de transport (4), placé avant l'outil de coupe et entraíné en continu pendant le fonctionnement de l'appareil, au moyen duquel une longueur préfixée de bande de papier est amenée chaque fois entre deux opérations de coupe successives, un dispositif de serrage (8) prévu dans la zone entre le premier dispositif de transport (4) et l'outil de coupe (1) et commandé en synchronisme avec celui-ci, au moyen duquel la portion de bande de papier (7) directement voisine de l'outil de coupe (1) et se trouvant devant cet outil, peut être immobilisée par serrage pendant la durée de l'opération de coupe, jusqu'à ce que le passage entre les lames (2, 3) soit de nouveau dégagé, ainsi qu'un espace libre (30) prévu dans la zone entre le premier dispositif de transport (4) et le dispositif de serrage (8), dans lequel le tronçon de bande de papier avancé en continu par le premier dispositif de transport pendant l'opération de coupe, peut s'étendre sous la forme d'une boucle (7a), constituant un renflement perpendiculaire à la direction d' avance (A), théoriquement rectiligne, caractérisé en ce qu'une tôle de guidage (26) est prévue entre le premier dispositif de transport (4) et le dispositif de serrage (8), que la tôle de guidage (26) est pourvue d'un grand nombre d'ajours (36) et que l'espace au-dessus de la tôle de guidage (26) est enfermé par un capot d'amortissement (41) disposé à distance de la boucle (7a).
  2. Appareil selon la revendication 1, caractérisé en ce que la tôle de guidage (26) est renflée vers le haut, perpendiculairement à la direction d'avance (A), par rapport à un plan (E-E) tangentiel aux éléments de transport (5) du premier dispositif de transport (4) et aux éléments de serrage (11, 12) du dispositif de serrage (8).
  3. Appareil selon la revendication 1 ou 2, caractérisé en ce que des déflecteurs en tôle (37, 38), inclinés dans des sens contraires l'un vers l'autre et influençant la formation de la boucle, sont prévus dans les zones avant et arrière de la tôle de guidage (26), dans la direction d'avance (A) du papier, au-dessus de cette tôle.
  4. Appareil selon la revendication 3, caractérisé en ce que l'inclinaison de chaque déflecteur (37, 38) par rapport à la tôle de guidage (26) est réglable.
EP96909042A 1995-04-21 1996-04-04 Procede et dispositif de refente d'une bande de papier en sens travers Expired - Lifetime EP0822915B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29506784 1995-04-21
DE29506784U 1995-04-21
PCT/DE1996/000646 WO1996033122A1 (fr) 1995-04-21 1996-04-04 Procede et dispositif de refente d'une bande de papier en sens travers

Publications (2)

Publication Number Publication Date
EP0822915A1 EP0822915A1 (fr) 1998-02-11
EP0822915B1 true EP0822915B1 (fr) 1999-09-08

Family

ID=8007149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96909042A Expired - Lifetime EP0822915B1 (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)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532487A1 (de) * 1995-09-02 1997-03-06 Wella Ag Vorrichtung und Verfahren zum Transportieren und Schneiden bandförmigen Materials
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.
AU2001280877A1 (en) * 2000-08-24 2002-03-04 Moore North America, Inc. Continuous web input guillotine cutter
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.
JP2005001691A (ja) * 2003-06-10 2005-01-06 Sii P & S Inc 感熱性粘着シート用熱活性化装置
US20060156876A1 (en) 2005-01-19 2006-07-20 Pitney Bowes Incorporated Motion control system and method for a high speed inserter input
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
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

Family Cites Families (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
DE3131101C2 (de) * 1980-09-04 1986-03-06 Vits-Maschinenbau Gmbh, 4018 Langenfeld Verfahren zum Querschneiden einer Warenbahn, insbes. aus Papier, Kunststoff oder Metall und Stapeln der geschnittenen Bogen sowie Vorrichtung zur Durchführung des Verfahrens
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
DE69423154T2 (de) * 1993-08-16 2000-09-28 Agfa Corp., Ridgefield Park Verfahren und Apparat zum Zwischenspeichern von Medien

Also Published As

Publication number Publication date
ES2136982T3 (es) 1999-12-01
CA2212234A1 (fr) 1996-10-24
EP0822915A1 (fr) 1998-02-11
JPH11503704A (ja) 1999-03-30
DE29607062U1 (de) 1996-06-13
DE59603008D1 (de) 1999-10-14
WO1996033122A1 (fr) 1996-10-24

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