EP1654179B1 - Bogenpuffermittel und verfahren zum puffern von bögen - Google Patents

Bogenpuffermittel und verfahren zum puffern von bögen Download PDF

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Publication number
EP1654179B1
EP1654179B1 EP04749099A EP04749099A EP1654179B1 EP 1654179 B1 EP1654179 B1 EP 1654179B1 EP 04749099 A EP04749099 A EP 04749099A EP 04749099 A EP04749099 A EP 04749099A EP 1654179 B1 EP1654179 B1 EP 1654179B1
Authority
EP
European Patent Office
Prior art keywords
rollers
sheet
pair
buffering
rear pair
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
EP04749099A
Other languages
English (en)
French (fr)
Other versions
EP1654179A1 (de
Inventor
Andreas Tillman
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.)
Plockmatic International AB
Original Assignee
Plockmatic International AB
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 Plockmatic International AB filed Critical Plockmatic International AB
Publication of EP1654179A1 publication Critical patent/EP1654179A1/de
Application granted granted Critical
Publication of EP1654179B1 publication Critical patent/EP1654179B1/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
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/004—Deskewing sheet by abutting against a stop, i.e. producing a buckling of the sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/09—Function indicators indicating that several of an entity are present
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/72—Stops, gauge pins, e.g. stationary
    • B65H2404/723—Stops, gauge pins, e.g. stationary formed of forwarding means
    • B65H2404/7231—Stops, gauge pins, e.g. stationary formed of forwarding means by nip rollers in standby
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers

Definitions

  • the present invention concerns sheet buffering means for placement between paper handling equipment, such as a printer, offset press, copying machine or paper collator, and paper finishing equipment, such as for stapling and/or folding and a method for buffering sheets.
  • paper handling equipment such as a printer, offset press, copying machine or paper collator
  • paper finishing equipment such as for stapling and/or folding and a method for buffering sheets.
  • Copying machines and printers become more and more productive and the number of sheets fed out per period of time increase.
  • a characteristic that also has become common is that the sheets are fed out in showers of, for example, two to eight sheets with a pause in between. For example, three sheets are fed out closely after each other thereafter a pause occurs and thereafter three sheets in close series.
  • the paper finishing equipment is mounted after the paper handling equipment, such as the printer or paper collator, in the form of equipment for compiling, stapling, folding, foldprocessing, such as square back folding, book production or mailinserting.
  • the paper finishing equipment which is to process the sheets must generally be able to process these in the speed of flow present in the middle of a shower. This requires very quick equipment which therefore are expensive to manufacture, buy and service due to the requirement of speed.
  • a time gap should be needed to provide for in chosen positions in the process.
  • the buffering system comprises a number of paper paths and driving pairs of rollers.
  • a special paper path is provided for the buffering of one or more sheets by means of a pair of rollers stopping the feeding of the leading edge of the sheet while the sheet still is fed forward, which causes the sheet to bend upwards and whereupon the following edge of the sheet "flips" over the rear pair of rollers and places itself flat thereupon.
  • a second sheet may be fed underneath the overhead sheet, whereupon these thereafter may be fed out together but with a small dislocation.
  • the present invention aims to solve these problems and does so by means of a sheet buffering means according to claim 1 and a method of buffering sheets according to claim 9.
  • the advantages with the present invention are that it can be made very short seen in the length extension of the process chain due to the bending of the sheet/sheets which is sustained during the whole time of buffering. Additionally, the number of paper paths may be considerably decreased as above all, their length and complicity. This brings about a more simple, less expensive, more compact and more easily handled means.
  • Fig. 1 shows sheet buffering means intended to buffer up to two sheets 7, comprising an upper buffering path 11 and a lower buffering path 12.
  • the upper buffering path 11 will be described on its own.
  • the sheet buffering means may comprise only one buffering path for the buffering of only one sheet if so desired.
  • a sheet 7 is guided by means of a flap 5 into a rear pair of rollers 13 comprising a driven roller 1 and a counter roller 8.
  • the rear pair of rollers 13 feeds the sheet 7 forward so that it reaches a front pair of rollers 14 comprising a driven roller 2 and a counter roller 9.
  • the front pair of rollers 14 is stopped whereby the lead end 16 of the sheet 7 is held in place in the nip 15. Meanwhile, the rear pair of rollers 13 continues to feed the sheet 7 forward. Due to this the sheet 7 bend, in this case upwards, since a guide 6 stops the sheet from bending downwards.
  • the guide 6 is not necessary for the sheet 7 to find the right way to the front pair of rollers 14 but for the sheet 7 to bend in the desired direction.
  • the guide 6 is slightly bent upwards in order to ease the start of the bending.
  • a compliant guide 10 may be provided directed towards the front pair of rollers 14. This compliant guide do not stop the bending of the sheet 7 but stop the sheet 7 from abutting the driving roller 2 in the front pair of rollers 14.
  • rollers 1 and 2 are driven and the counter rollers 8, 9 only follows, but if desired the counter rollers 8, 9 may also be driven, see Fig. 1 .
  • Each driven roller 1, 2 may be driven by a motor each, for example an electrical motor, but preferably the rollers 1 and 2 are driven by the same motor 19, whereby the front driving roller 2 is provided with a clutch 22 so that the front roller 2 may be disengaged from the driving force and thus be stopped during the time the lead end 16 of the sheet 7 is held in place.
  • a transmission belt 23 transfer the driving force of the motor 19 to both of the rollers 1 and 2.
  • a friction brake 30 is preferably provided in order to prevent a more rigid sheet of its own motion presses itself through the front pair of rollers 14.
  • the rollers are spring biased towards each other and preferably provided with a flexible material at least at its periphery.
  • the lower buffering path 12 is a mirror image of the upper buffering path 11.
  • the upper buffering paths on top of each other or two lower buffering paths on top of each other if so desired. The distance between the two paths must then be increased at such a rate so that a very bent sheet fits in between the two paths.
  • more buffering paths may be provided in the same sheet buffering means if so desired.
  • the flap 5 may be angled between the different buffering paths 11 and 12 (or more if so desired) in order to allow guidance of the sheets 7 to a desired buffering path 11, 12.
  • two short, simple paper paths 20 are provided on each side of the flap 5.
  • two short, simple paper paths 21 are preferably provided at the output end 24 of the sheet buffering means for guidance into the subsequent paper finishing equipment.
  • a signal is needed from the subsequent paper finishing equipment which indicate that it is ready to receive sheets 7, whereby the sheets 7 pass directly through the sheet buffering means without storage. If the paper finishing equipment is not ready, i.e. processing a number of sheets 7 the sheet buffering means is set in active position.
  • the flap 5 When a sheet is detected by an inlet sensor 26 provided at the inlet end 25 of the sheet buffering means the flap 5 is set in an unoccupied position and the driving rollers 1 and 2 are started in the selected buffering path 11, 12.
  • a front sensor 28 in each buffering path senses when the lead end 16 of the sheet 7 reaches at least the nip 15 between the front driving roller 2 and its counter roller 9 and then disengage the roller 2 from the driving force, whereby the front pair of rollers 14 stops so that the lead end 16 of the sheet 7 is held in place.
  • the inlet sensor 26 senses when the trail end 18 of the sheet 7 soon or absolutely at the latest when it reaches the nip 17 between the rear driving roller 1 and its counter roller 8 and then turns off the motor 19. The flap 5 will then turn to the unoccupied buffering path.
  • a bundle may be fed right through the sheet buffering means without intermediate storage, for example. This is achieved, for example, by the fact that the rollers are springbiased towards each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Collation Of Sheets And Webs (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (11)

  1. Bogenpufferungseinrichtung zum Anordnen zwischen Papierbehandlungsvorrichtungen, wie einem Drucker oder einer Papierzusammentragmaschine, und Papierendbearbeitungsvorrichtungen, beispielsweise Vorrichtungen zum Heften und/oder Falten, wobei mindestens ein Satz aus einem Paar vorderer Walzen (14) mit drehenden Walzen (2 und 9), zwischen die ein Bogen (7) einführbar ist, und einem hinteren Walzenpaar (13) mit drehenden Walzen (1 und 8), zwischen die ein Bogen (7) einführbar ist, vorgesehen ist, wobei mindestens eine Walze (1 oder 2) in jedem Paar (13 oder 14) durch einen gemeinsamen Motor oder einen jeweiligen Motor angetrieben ist, wobei die vordere angetriebene Walze (2) mittels einer Kupplung trennbar ist, um das vordere Ende (16) eines Bogens (7) zu halten, während gleichzeitig die hintere angetriebene Walze (1) angetrieben wird, so dass der Bogen (7) zwischen den beiden Walzenpaaren (13 und 14) gebogen wird, dadurch gekennzeichnet, dass auch das hintere Walzenpaar (13) angehalten wird, wenn das hintere Ende (17) des Bogens (7) das hintere Walzenpaar (13) erreicht, wodurch der Bogen (7) gebogen bleiben kann, bis es erwünscht ist, ihn auszugeben, was durch das Starten beider Walzenpaare (13 und 14) erfolgt.
  2. Bogenpufferungseinrichtung nach Anspruch 1, bei der die Walzenpaare (13 und 14) mit einer höheren Geschwindigkeit angetrieben werden können, wenn der Bogen (7) ausgegeben wird.
  3. Bogenpufferungseinrichtung nach Anspruch 1 oder 2, bei der ein Sensor (28) zum Erfassen der Position des vorderen Endes (16) des Bogens (7) vorgesehen ist, um so den Antrieb des vorderen Walzenpaares (14) zu steuern.
  4. Bogenpufferungseinrichtung nach Anspruch 1, 2 oder 3, bei der ein Einlasssensor (26) zum Erfassen der Position des hinteren Endes (18) des Bogens (7) vorgesehen ist, um so das hintere Walzenpaar (13) zu steuern.
  5. Bogenpufferungseinrichtung nach einem der vorhergehenden Ansprüche, bei der mindestens zwei Sätze von vorderen und hinteren Rollenpaaren (14 und 13) zum Puffern von mindestens zwei Bögen (7) vorgesehen sind.
  6. Bogenpufferungseinrichtung nach Anspruch 5, bei der eine Klappe (5) vor dem hinteren Walzenpaar (13) vorgesehen ist, um einen Bogen (7) einem gewünschten hinteren Walzenpaar (13) zuzuführen.
  7. Bogenpufferungseinrichtung nach einem der vorhergehenden Ansprüche, bei der eine Führung (6) zwischen den vorderen und dem hinteren Walzenpaar (14 und 13) vorgesehen ist, welche verhindert, dass sich ein Bogen (7) in die Richtung biegt, in welcher die Führung vorgesehen ist.
  8. Bogenpufferungseinrichtung nach einem der vorhergehenden Ansprüche, bei der eine Reibungsbremse an dem vorderen Walzenpaar (14) vorgesehen ist.
  9. Verfahren zum Puffern von Bögen zwischen Papierbehandlungsvorrichtungen, wie einem Drucker oder einer Papierzusammentragmaschine, und Papierendbearbeitungsvorrichtungen, beispielsweise Vorrichtungen zum Heften und/oder Falten, mit den folgenden Schritten: Zuführen eines vorderen Endes (16) eines Bogens (7) zwischen ein vorderes Walzenpaar (14), Anhalten des vorderen Walzenpaares (14), wenn das vordere Ende (16) des Bogens (7) zumindest den Spalt (15) des vorderen Walzenpaares (14) erreicht hat, wobei gleichzeitig das hintere Walzenpaar (13) den Bogen (7) weiter zuführt, wodurch sich dieser zwischen den beiden Walzenpaaren (13 und 14) biegt,
    gekennzeichnet durch das Anhalten des hinteren Walzenpaares (13) spätestens, wenn das hintere Ende (18) des Bogens (7) den Spalt (17) des hinteren Walzenpaares (13) erreicht, und Starten des vorderen und des hinteren Walzenpaares (14 und 13) zu einem gewünschten Ausgabezeitpunkt.
  10. Verfahren nach Anspruch 9, bei dem das Antreiben des vorderen und des hinteren Walzenpaares (14 und 13) beim Ausgeben schneller als beim Zuführen erfolgt.
  11. Verfahren nach Anspruch 9 oder 10, bei dem zumindest zwei Sätze von vorderen und hinteren Walzenpaaren (14 und 13) zum Puffern von mindestens zwei Bögen (7) vorgesehen sind.
EP04749099A 2003-07-01 2004-06-30 Bogenpuffermittel und verfahren zum puffern von bögen Expired - Lifetime EP1654179B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0301942A SE525481C2 (sv) 2003-07-01 2003-07-01 Arkbuffert och metod att buffra ark
PCT/SE2004/001061 WO2005003007A1 (en) 2003-07-01 2004-06-30 A sheet buffering means and method for buffering sheets

Publications (2)

Publication Number Publication Date
EP1654179A1 EP1654179A1 (de) 2006-05-10
EP1654179B1 true EP1654179B1 (de) 2008-02-13

Family

ID=27731072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04749099A Expired - Lifetime EP1654179B1 (de) 2003-07-01 2004-06-30 Bogenpuffermittel und verfahren zum puffern von bögen

Country Status (8)

Country Link
US (1) US20060255536A1 (de)
EP (1) EP1654179B1 (de)
JP (1) JP4540670B2 (de)
CN (1) CN1819960A (de)
AT (1) ATE385982T1 (de)
DE (1) DE602004011784T2 (de)
SE (1) SE525481C2 (de)
WO (1) WO2005003007A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7704248B2 (en) 2005-12-21 2010-04-27 Boston Scientific Scimed, Inc. Ablation device with compression balloon
JP5114517B2 (ja) * 2010-03-25 2013-01-09 京セラドキュメントソリューションズ株式会社 シート後処理装置及び画像形成装置

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JP3843730B2 (ja) * 2000-11-13 2006-11-08 ブラザー工業株式会社 画像形成装置及び記録媒体供給装置

Also Published As

Publication number Publication date
DE602004011784D1 (de) 2008-03-27
EP1654179A1 (de) 2006-05-10
ATE385982T1 (de) 2008-03-15
US20060255536A1 (en) 2006-11-16
JP2007521216A (ja) 2007-08-02
SE525481C2 (sv) 2005-03-01
DE602004011784T2 (de) 2009-02-05
SE0301942D0 (sv) 2003-07-01
SE0301942L (sv) 2005-01-02
JP4540670B2 (ja) 2010-09-08
CN1819960A (zh) 2006-08-16
WO2005003007A1 (en) 2005-01-13

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