EP2842896B1 - Papierfaltvorrichtung - Google Patents

Papierfaltvorrichtung Download PDF

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Publication number
EP2842896B1
EP2842896B1 EP12875574.1A EP12875574A EP2842896B1 EP 2842896 B1 EP2842896 B1 EP 2842896B1 EP 12875574 A EP12875574 A EP 12875574A EP 2842896 B1 EP2842896 B1 EP 2842896B1
Authority
EP
European Patent Office
Prior art keywords
sheet
buckles
folding
stopper
buckle
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.)
Active
Application number
EP12875574.1A
Other languages
English (en)
French (fr)
Other versions
EP2842896A4 (de
EP2842896A1 (de
Inventor
Tatsuaki Ida
Hiroki Yamamoto
Shinya Watanabe
Friedhelm Pfeiffer
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.)
Horizon International Inc
Original Assignee
Horizon International Inc
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 Horizon International Inc filed Critical Horizon International Inc
Publication of EP2842896A1 publication Critical patent/EP2842896A1/de
Publication of EP2842896A4 publication Critical patent/EP2842896A4/de
Application granted granted Critical
Publication of EP2842896B1 publication Critical patent/EP2842896B1/de
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Anticipated expiration legal-status Critical

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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
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag folders
    • 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
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B65H45/144—Pockets or stops therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space

Definitions

  • the present invention relates to a sheet folding apparatus, particularly, a sheet folding apparatus which folds up a sheet like an accordion by alternating mountain and valley folds of the sheet in a direction perpendicular to a sheet feed direction.
  • Fig. 7 is a schematic view illustrating an configuration of such conventional sheet folding apparatus.
  • an alphabet A designates a sheet supply unit
  • an alphabet B designates a sheet conveyance unit
  • an alphabet C designates a sheet folding unit.
  • the sheet supply unit has a sheet supply table 1 arranged for vertical motion and supporting a sheet bundle thereon, and a roller 2 feeding the uppermost sheet P of the sheet bundle to the sheet conveyance unit B one by one.
  • the sheet conveyance unit B has a conveyor belt 3 conveying the sheet P supplied from the sheet supply unit A to the sheet folding unit C, and a group of idle rollers 4 preventing the sheet P from lifting from the conveyor belt 3.
  • the sheet folding unit C has a plurality of buckles b1-b4, and each of the buckles b1-b4 is provided with a stopper S1-S4 whose positon is adjustable.
  • a pair of driven intake rollers W, W1; W, W2; W2, W3; W3, W4 is arranged opposite to each other so as to take the sheet P into the associated buckle b1-b4 and a pair of driven discharge rollers W, W2; W2, W3; W3, W4; W4, W5 is arranged opposite to each other so as to fold a portion of the sheet P exteriorly protruding from the associated buckle b1-b4.
  • a discharge roller associated with a previous buckle concurrently serves as an intake roller associated with the next buckle and thereby, the sheet P is sequentially taken into a plurality of buckles and folded like an accordion by alternating mountain and valley folds of the sheet in a direction perpendicular to a sheet feed direction depending on the number of the buckles.
  • each of the stopper S1-S4 is fixed to a positon corresponding to a folding positon of the sheet P. Then the sheet P fed from the sheet conveyance unit B is nipped between the pair of rollers W and W1 so as to be inserted into the buckle b1.
  • the sheet P is deflected from the buckle b1 in the neighborhood of the inlet of the buckle b1, the deflected portion is nipped between the pair of rollers W2 and W, and the sheet P is folded to one side.
  • the folded sheet P is inserted into the buckle b2 with its fold line in the lead.
  • the folded sheet P is deflected from the buckle b2 in the neighborhood of the inlet of the buckle b2, the deflected portion is nipped between the pair of rollers W2 and W3, and the folded sheet is further folded to the other side.
  • the sheet P is folded at two positions.
  • the twice folded sheet P is further folded by the buckle b3 together with the pair of rollers W2 and W3 and the pair of rollers W3 and W5, and further folded by the buckle b4 together with the rollers W3, W4 and W5.
  • the sheet folded up like an accordion by alternating mountain and valley folds of the sheet in a direction perpendicular to a sheet feed direction is discharged from the apparatus.
  • the length of each flap of the accordion fold can be changed by adjusting the position of the stoppers S1-S4 of the buckles b1-b4.
  • all of the stoppers S1-S4 are set in such a way that they are arranged at the same distance from the inlets of the associated buckles b1-b4.
  • a collision speed of a sheet P slightly differs from one stopper to another, and the firmness and deflection characteristics are differ from one sheet to another. Therefore, in the conventional sheet folding apparatus, there arises a folding error that causes an accordion-folded sheet whose last flap is longer or shorter than the remaining flaps.
  • Patent Document 3 discloses a sheet folder for flimsy printed sheets with an automatic fold position correction system.
  • the sensor system there provides a control signal modifying the selected stopping position of the reversible rollers, to provide a fold position correction system.
  • the reversible rollers are transversely spaced and separately servo driven, and the sensor system is a plural sensor array extending transversely across the folded sheets path to provide skew correction signals differently controlling the selected stopping positions of the separately driven reversible rollers.
  • an object of the present invention to provide a sheet folding apparatus capable of easily resetting positions of stoppers in a short time when the folding error occurs in a process of evenly folding up a sheet like an accordion.
  • a sheet folding apparatus which folds up a sheet like an accordion by alternating mountain and valley folds of the sheet in a direction perpendicular to a sheet feed direction
  • the sheet folding apparatus comprising: a sheet supply unit sequentially feeding the sheet from a sheet stack; and a sheet folding unit folding the sheet fed from the sheet supply unit in the direction perpendicular to the sheet feed direction, the sheet supply unit comprising: a shelf on which the sheet stack is placed; a conveyor belt extending between the shelf and the sheet folding unit; and a sheet feeder feeding the sheet from the sheet stack to the conveyor belt one by one, the sheet folding unit comprising: a plurality of buckles into which the sheet fed from the conveyor belt is inserted sequentially; and a stopper attached to each of the buckles so as to be slidable along the sheet feed direction, wherein, each time the sheet is inserted into the buckles, the sheet is positioned at a preset folding position by colliding with the associated stopper at the
  • the sheet folding apparatus comprises the control unit integrally controlling the stoppers of the buckles of the sheet folding unit, and when the folding error occurs in a process of evenly folding up a sheet like an accordion, the positions of the stoppers of the buckles are automatically reset so as to correct the folding error just by inputting to the control unit a value of a difference in length between the last flap and the remaining flaps of the accordion-folded sheet accompanied with the folding error, and thereby, it is possible to easily reset the positions of the stoppers in a short time when the folding error occurs.
  • Fig. 1 is a schematic view showing a configuration of a sheet folding apparatus according to an embodiment of the present invention
  • Fig. 2 is an enlarged view showing a configuration of a sheet folding unit of the sheet folding apparatus shown in Fig. 1 .
  • the sheet folding apparatus of the present invention comprises a sheet supply unit A sequentially feeding the sheet P from a sheet stack M and a sheet folding unit B folding the sheet P fed from the sheet supply unit A in the direction perpendicular to the sheet feed direction.
  • the sheet supply unit A comprises a vertically movable shelf 1 on which the sheet stack M is placed, a conveyor belt 2 extending between the shelf 1 and the sheet folding unit B and a sheet feeder 3 feeding the upper most sheet P of the sheet stack M to the conveyor belt 2 one by one.
  • the sheet feeder 3 consists of a driven roller arranged above the front end of the shelf 1.
  • the reference numeral 4 designates a group of idle rollers preventing the sheet P from lifting from the conveyor belt 3.
  • the sheet folding unit B comprises a plurality of buckles (in this embodiment, four buckles b1-b4) into which the sheet P fed from the conveyor belt 2 is inserted sequentially, and a stopper S1-S4 attached to each of the buckles b1-b4 so as to be slidable along the sheet feed direction.
  • each of the buckles b1-b4 is provided with a guide rail (not shown) extending parallel to the associated buckle, and the stoppers S1-S4 are attached to the guide rails for slide movement.
  • the sheet S is positioned at a preset folding position by colliding with the associated stopper S1-S4 at the leading end thereof.
  • the sheet folding unit B further comprises a stopper drive mechanism d1-d4 arranged at each of the buckles b1-b4 so as to move the associated stopper S1-S4.
  • each of the stopper drive mechanisms d1-d4 consists of a threaded shaft 5 of a ball screw, a motor 6 attached to the buckle b1-b4 so as to rotate the thread shaft 5, and a nut (not shown) of the ball screw arranged at the stopper S1-S4 and engaging with the threaded shaft 5.
  • the stopper S1-S4 is engaged with the threaded shaft 5 through the nut.
  • stopper S1-S4 is moved in directions toward and away from an inlet e of the associated buckle b1-b4 by clockwise and counterclockwise rotations of the motor 6.
  • a configuration of the stopper drive mechanism d1-d4 is not limited to this embodiment.
  • a combination of a ball screw and a motor for example, a combination of an endless belt extending between a pair of pulleys in a direction parallel to the buckle b1-b4 and a motor rotating one of the pulleys may be used.
  • the stopper S1-S4 is fixed to the endless belt.
  • the stopper drive mechanisms d1-d4 are integrally controlled by a control unit C.
  • a pair of driven intake rollers W, W1; W, W2; W2, W3; W3, W4 is arranged in the neighborhood of the inlet e of each of the buckles b1-b4 and opposed to each other so as to take the sheet in the associated buckle b1-b4.
  • a pair of driven discharge rollers W, W2; W2, W3; W3, W4; W4, W5 is also arranged in the neighborhood of the inlet e of each of the buckles b1-b4 and opposed to each other so as to fold a portion of the sheet P exteriorly protruding from the associated buckle b1-b4.
  • the discharge roller associated with a previous buckle concurrently serving as the intake roller associated with the next buckle, thereby the sheet P being sequentially inserted into the buckles so that mountain and valley folds of the sheet P are alternated in a direction perpendicular to the sheet feed direction at the number of times corresponding to the number of the buckles and an accordion-folded sheet is obtained.
  • the sheet P fed from the conveyor belt 2 of the sheet supply unit A is nipped between the pair of rollers W and W1 so as to be inserted into the buckle b1.
  • the sheet P is deflected from the buckle b1 in the neighborhood of the inlet of the buckle b1, the deflected portion is nipped between the pair of rollers W2 and W, and the sheet P is folded to one side (first fold).
  • the folded sheet P is inserted into the buckle b2 with its fold line in the lead.
  • the folded sheet P is deflected from the buckle b2 in the neighborhood of the inlet of the buckle b2, the deflected portion is nipped between the pair of rollers W2 and W3, and the folded sheet is further folded to the other side (second fold).
  • the twice folded sheet P is further folded by the buckle b3 together with the pair of rollers W2 and W3 and the pair of rollers W3 and W5 (third fold), and further folded by the buckle b4 together with the rollers W3, W4 and W5 (fourth fold). Then the accordion-folded sheet P is discharged from the sheet folding apparatus.
  • positions of the stoppers S1-S4 of the buckles b1-b4 are preset by the control unit C (regularly, all of the stoppers S1-S4 are set in such a way that they are arranged at the same distance from the inlets of the associated buckles b1-b4).
  • a collision speed of a sheet P slightly differs from one stopper to another, and the firmness and deflection characteristics are differ from one sheet to another. Consequently, as shown in Fig. 3B , there arises a folding error that causes an accordion-folded sheet P whose last flap P5 is longer than the remaining flaps P1-P4 (L1), or an accordion-folded sheet P whose last flap P5 is shorter than the remaining flaps P1-P4 (L2).
  • an operator measures a difference in length between the last flap P5 and the remaining flaps P1-P4 of an accordion-folded sheet P accompanied with a folding error.
  • control unit C receives an input of the measured value of the difference of length, and divides the difference in length by the number of the buckles b1-b4 (in this embodiment, four).
  • the last flap P5 is longer than the remaining flaps P1-P4 ( Fig.
  • the control unit C sends control signals to each of the stopper drive mechanisms d1-d4 in such a way that the associated stopper S1-S4 is moved in a direction away from the inlet e of the associated buckle b1-b4 by the distance corresponding to the result of the division (L1/4), and when the last flap P5 is shorter than the remaining flaps P1-P4, in order to eliminate the difference in length, the control unit C sends control signals to each of the stopper drive mechanisms d1-d4 in such a way that the associated stopper S1-S4 is moved in a direction toward the inlet e of the associated buckle b1-b4 by the distance corresponding to the result of the division.
  • control unit C controls the stopper drive mechanisms d1-d4 based on a value obtained by rounding or rounding up or rounding down the result of the division.
  • control unit C comprises a touch screen (not shown) as an input means.
  • a screen displayed on the touch screen for receiving an input of setting values of positions of the stoppers S1-S4 is shown in Fig. 4 .
  • the reference numeral 7a designates an entry field for the setting value of a position of the stopper S1 of the first buckle b1
  • the reference numeral 7b designates an entry field for setting value of a position of the stopper S2 of the second buckle b2
  • the reference numeral 7c designates an entry field for the setting value of a position of the stopper S3 of the third buckle b3
  • the reference numeral 7d designates an entry field for setting value of a position of the stopper S4 of the fourth buckle b4.
  • Fig. 4 the same setting value (165.0 mm) is inputted in each of entry fields 7a-7d.
  • the numeral values are inputted through a numeric keypad (not shown) as well as a pair of "+” and "-" buttons which is arranged at the right side of each of the entry fields 7a-7d.
  • the sheet folding apparatus After the input of the setting values, the sheet folding apparatus starts operating. Then when the folding error occurs, a difference in length between the last flap and the remaining flaps of the accordion-folded sheet accompanied with the folding error is measured by an operator.
  • the display on the touch screen is switched to a display for input of the measured value as shown in Fig. 5 .
  • the reference numeral 8 designates an entry field for the measured value.
  • the display on the touch screen is switched to the display for input of the setting values of positions of the stoppers again.
  • the control unit C sends control signals to all of the stopper drive mechanisms so as to move the stoppers based on the changed setting values, thereby the folding error is corrected.
  • the positions of the stoppers of the buckles are automatically reset so as to correct the folding error just by inputting to the control unit a value of a difference in length between the last flap and the remaining flaps of the accordion-folded sheet accompanied with the folding error, and thereby, it is possible to easily reset the positions of the stoppers in a short time when the folding error occurs.

Landscapes

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

Claims (1)

  1. Bogenfalzapparatur, die einen Bogen (P) durch Abwechseln von Berg- und Talfalzen des Bogens (P) in einer Richtung senkrecht zu einer Bogenzufuhrrichtung wie ein Akkordeon falzt, wobei die Bogenfalzapparatur umfasst:
    eine Bogenzufuhreinheit (A), die den Bogen (P) von einem Bogenstapel (M) der Reihe nach zuführt, und
    eine Bogenfalzeinheit (B), die den von der Bogenzufuhreinheit (A) zugeführten Bogen (P) in der Richtung senkrecht zur Bogenzufuhrrichtung falzt,
    wobei die Bogenzufuhreinheit (A) umfasst:
    eine Ablage (1), auf die der Bogenstapel (M) gelegt wird,
    ein Förderband (2), das zwischen der Ablage (1) und der Bogenfalzeinheit (B) verläuft, und
    eine Bogenzufuhreinrichtung (3), die einen Bogen (P) nach dem anderen vom Bogenstapel (M) dem Förderband (2) zuführt,
    wobei die Bogenfalzeinheit (B) umfasst:
    mehrere Taschen (b1-b4), in die der vom Förderband (2) zugeführte Bogen (P) der Reihe nach gelegt wird, und
    einen Anschlag (S1-S4), der an jeder der Taschen (b1-b4) angebracht ist, so dass er entlang der Bogenzufuhrrichtung verschiebbar ist, wobei jedes Mal wenn der Bogen (P) in die Taschen (b1-b4) gelegt wird, der Bogen (P) durch Kollision seines vorderen Endes mit dem zugehörigen
    Anschlag (S1-S4) in einer vorbestimmten Falzposition positioniert wird,
    wobei die Bogenfalzeinheit (B) ferner umfasst:
    einen Anschlagsantriebsmechanismus (d1-d4), der so an jeder der Taschen (b1-b4) angebracht ist, dass er den zugehörigen Anschlag (S1-S4) bewegt,
    ein Paar angetriebene Zufuhrwalzen (W), die in Nachbarschaft eines Einlasses einer jeden der Taschen (e) und einander gegenüber angeordnet sind, um den Bogen (P) in die zugehörige Tasche (b1-b4) zu führen, und
    ein Paar angetriebene Abfuhrwalzen (W), die in Nachbarschaft des Einlasses einer jeden der Taschen (e) und einander gegenüber angeordnet sind, um einen Teil des Bogens (P), der von der zugehörigen Tasche (b1-b4) nach außen ragt, zu falzen, wobei die zu einer vorherigen Tasche (b1-b4) gehörende Abfuhrwalze gleichzeitig als die zur nächsten Tasche (b1-b4) gehörende Zufuhrwalze dient, wodurch der Bogen (P) der Reihe nach in die Taschen (b1-b4) gelegt wird, um so oft wie der Anzahl der Taschen (b1-b4) entsprechenden gefalzt zu werden, wobei die Bogenfalzapparatur ferner eine Steuereinheit (C) umfasst, die die Anschlagsantriebsmechanismen (d1-d4) der Bogenfalzeinheit (B) integral steuert, dadurch gekennzeichnet, dass
    die Steuereinheit (C) eine Eingabe bezüglich eines Längenunterschieds zwischen dem letzten Falzabschnitt (P5) und den restlichen Falzabschnitten (P1-P4) eines akkordeongefalzten Bogens (P) mit einem Falzfehler erhält und den Längenunterschied durch die Anzahl der Taschen (b1-b4) dividiert, wobei,
    wenn der letzte Falzabschnitt (P5) länger als die restlichen Falzabschnitte (P1-P4) ist, die Steuereinheit (C), um die Längendifferenz zu beseitigen, Steuersignale an jeden der Anschlagsantriebsmechanismen (d1-d4) sendet, so dass der zugehörige Anschlag (S1-S4) um eine Strecke, die dem Ergebnis des Dividierens entspricht, in eine Richtung vom Einlass der zugehörigen Tasche (e) weg bewegt wird, und wenn der letzte Falzabschnitt (P5) kürzer als die restlichen Falzabschnitte (P1-P4) ist, die Steuereinheit (C), um die Längendifferenz zu beseitigen, Steuersignale an jeden der Anschlagsantriebsmechanismen (d1-d4) sendet, so dass der zugehörige Anschlag (S1-S4) um eine Strecke, die dem Ergebnis des Dividierens entspricht, in eine Richtung zum Einlass der zugehörigen Tasche (e) hin bewegt wird.
EP12875574.1A 2012-04-27 2012-04-27 Papierfaltvorrichtung Active EP2842896B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/061333 WO2013161048A1 (ja) 2012-04-27 2012-04-27 紙折装置

Publications (3)

Publication Number Publication Date
EP2842896A1 EP2842896A1 (de) 2015-03-04
EP2842896A4 EP2842896A4 (de) 2016-04-06
EP2842896B1 true EP2842896B1 (de) 2017-03-15

Family

ID=49482415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12875574.1A Active EP2842896B1 (de) 2012-04-27 2012-04-27 Papierfaltvorrichtung

Country Status (5)

Country Link
US (1) US20150119222A1 (de)
EP (1) EP2842896B1 (de)
JP (1) JP5808032B2 (de)
CN (1) CN104245556B (de)
WO (1) WO2013161048A1 (de)

Cited By (1)

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TWI691451B (zh) * 2019-08-30 2020-04-21 磊登自動控制有限公司 雙向折邊機及其紙張雙向折疊方法

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Publication number Priority date Publication date Assignee Title
JP6732281B2 (ja) * 2016-05-27 2020-07-29 ホリゾン・インターナショナル株式会社 用紙折り装置
CN107720396A (zh) * 2017-08-18 2018-02-23 河南腾国机械设备有限公司 一种火纸折叠设备
JP7311888B2 (ja) * 2019-08-13 2023-07-20 ホリゾン・インターナショナル株式会社 製本システム

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EP0511488A1 (de) * 1991-03-26 1992-11-04 Mathias Bäuerle GmbH Papierfalzmaschine mit einstellbaren Falzwalzen
US6024682A (en) * 1998-11-23 2000-02-15 Xerox Corporation Automatically continuously variable fold position sheet folding system with automatic length and skew correction
JP2001088227A (ja) 1999-09-20 2001-04-03 Horizon International Kk 用紙折機
DE50106223D1 (de) * 2001-12-11 2005-06-16 Oppenweiler Binder Gmbh Maschb Verfahren zur Einstellung der Falzspaltenweite mehrerer Falzwalzenpaare.
JP4307460B2 (ja) * 2006-03-24 2009-08-05 ホリゾン・インターナショナル株式会社 紙折り機用ローラ装置
JP4302706B2 (ja) * 2006-03-28 2009-07-29 ホリゾン・インターナショナル株式会社 紙折装置
JP2007302383A (ja) * 2006-05-10 2007-11-22 Horizon International Inc 紙折装置
DE102008048286A1 (de) * 2008-09-22 2010-03-25 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum Falzen von Bogen
CN201694682U (zh) * 2010-05-25 2011-01-05 烟台裕鸿印刷包装有限公司 折页机扫描及异常剔除装置
JP5605119B2 (ja) * 2010-09-21 2014-10-15 株式会社リコー 用紙折り装置及び画像形成装置

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI691451B (zh) * 2019-08-30 2020-04-21 磊登自動控制有限公司 雙向折邊機及其紙張雙向折疊方法

Also Published As

Publication number Publication date
CN104245556A (zh) 2014-12-24
JPWO2013161048A1 (ja) 2015-12-21
EP2842896A4 (de) 2016-04-06
JP5808032B2 (ja) 2015-11-10
EP2842896A1 (de) 2015-03-04
WO2013161048A1 (ja) 2013-10-31
US20150119222A1 (en) 2015-04-30
CN104245556B (zh) 2016-05-11

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