EP0304646B1 - Dispositif pour fixer un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative - Google Patents

Dispositif pour fixer un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative Download PDF

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Publication number
EP0304646B1
EP0304646B1 EP88112012A EP88112012A EP0304646B1 EP 0304646 B1 EP0304646 B1 EP 0304646B1 EP 88112012 A EP88112012 A EP 88112012A EP 88112012 A EP88112012 A EP 88112012A EP 0304646 B1 EP0304646 B1 EP 0304646B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
plate
clamping
cylinder
rail
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
EP88112012A
Other languages
German (de)
English (en)
Other versions
EP0304646A2 (fr
EP0304646A3 (en
Inventor
Willi Jeschke
Lothar Stadler
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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
Priority claimed from DE19873728263 external-priority patent/DE3728263A1/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0304646A2 publication Critical patent/EP0304646A2/fr
Publication of EP0304646A3 publication Critical patent/EP0304646A3/de
Application granted granted Critical
Publication of EP0304646B1 publication Critical patent/EP0304646B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1231—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially tangential to support surface

Definitions

  • the invention relates to a device for clamping flexible printing plates on the plate cylinder of rotary printing presses with clamping rails for clamping the printing plate, which are assigned to the two plate ends and are supported on the side walls of a cylinder channel, a one-piece clamping rail being provided for the trailing plate end a clamping punch for the plate end is arranged in its central region, and means for stretching or compressing the plate end in the axial direction of the plate cylinder are provided in the outer region of the tensioning rails, according to EP-A-0238804, published on 09/30/87.
  • the object of the present invention is to improve a device for clamping flexible printing plates on the plate cylinder so that the stretching or upsetting of the trailing plate end can be carried out in a simple manner, the means used enabling precise and precise control and being so designed that a remote adjustment is made possible while the machine is running.
  • the object is achieved in that clamping bars are mounted on the trailing rail on both sides in the outer region to be longitudinally displaceable, with one on the Tensioning rail and the tensioning bar mounted eccentric bolt for longitudinally displacing the tensioning bar, which interacts with an adjusting means, and that clamping rams are displaceably guided on the tensioning bar, which are shifted by means of eccentric tensioning pins which are mounted in the tensioning bar and press the plate end against a clamping surface on the tensioning bar and clamp.
  • the proposed clamping strips, on which the plate end is clamped, can be adjusted very precisely and with a high actuating force axially via the eccentric bolt, so that the plate end can be stretched or compressed very precisely using a remote control.
  • the sub-claim characterizes an advantageous embodiment of the invention, wherein a mechanical or electrical actuation of the actuating means is also possible.
  • FIG. 1 of a plate cylinder 1 of a sheetfed offset printing press carries, in a known manner, a flexible printing plate 2 which is stretched over clamping means.
  • a cylinder channel 3 which extends over the length of the cylinder body of the plate cylinder 1, serves to receive the clamping means.
  • the leading plate end 4 and the trailing end Plate ends 5 are angled in a bending device in register.
  • the leading plate end 4 is suspended for tensioning on a tensioning rail 6 and held by a spring 7.
  • Dowel pins 8 are used for the exact alignment of the front and rear plate ends 4 and 5 .
  • the pressure plate 2 is clamped on the plate cylinder 1 via compression springs 13, so that the two tensioning rails 6 and 9 are pivoted into the position shown in FIG.
  • the two plate ends 4 and 5 are under a cover plate 14, which prevents them from sliding out.
  • a clamping punch 10 is provided which can be adjusted and clamped to the angled area of the trailing plate end 5 by means of tensioning eccentric 11, which is supported on a bearing 12 on the tensioning rail 9 . This ensures that the trailing plate end 5 is fixed in the middle in the circumferential direction and laterally.
  • 1, 2, 4 and 5 show the clamping bars 15 provided on both sides on the clamping rail 9 in the outer region, which are mounted so as to be longitudinally displaceable relative to the clamping rail 9.
  • a guide groove 16 is provided, into which a guide pin 17 engages, the tensioning bar 15 being slidably held in a recess 19 of the tensioning rail 9 by a cover plate 18.
  • an eccentric bolt 20 is provided, which is mounted in the area of the clamping bar 15 pointing towards the center of the cylinder via a needle bearing 21.
  • the two eccentric pins 22 of the eccentric bolt 20 are mounted in bearing bodies 23, 24, which in turn are fastened to the tensioning rail 9.
  • a fork lever 25 is used to turn the eccentric bolt 20 and, according to FIG. 3, is actuated by a hydraulic cylinder 26 as an adjusting means.
  • a piston 27 is provided in the hydraulic cylinder 26 and, as soon as a pressure medium is supplied via the pressure line 28, pivots the fork lever 25 via a roller 29 (shown in FIG. 3, 4).
  • a clamping punch 32 is displaceably guided in a holder 33 on the clamping bar 15.
  • An eccentric clamping bolt 34 which is mounted on the clamping bar 15 by means of a bearing 35, enables the plate end 5 to be clamped by turning to a clamping surface 36, which is also provided on the clamping bar 15.
  • the clamping punch 32 and the eccentric clamping bolt 34 are held by means of a cover 37.
  • Two compression springs 38 in the holder 33 serve to move the clamping plunger 32 back in order to facilitate the insertion of the plate end 5.
  • the fork lever 25 and thus the eccentric bolt 20 can be rotated via the hydraulic cylinder 26.
  • the clamping bar 15 is moved in the longitudinal direction, so that the plate end 5 is stretched by the jamming between the clamping punch 32 and the clamping surface 36 when moving outward. Moving towards the center of the cylinder enables the end of the pressure plate to be compressed.
  • the amount of stretching or compression of the trailing plate end depends on the required correction of the printed image. Usually this correction is made evenly on both sides of the printing plate by a small amount.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (2)

  1. Dispositif de fixation de clichés flexibles (2) sur le cylindre porte-plaque (1) de machines rotatives d'impression, comprenant des barres (6, 9) de fixation du cliché (2) qui sont disposées au deux extrémités (4, 5) du cliché et prennent appui contre les parois latérales d'un canal (3) du cylindre, une barre monobloc de fixation (9), sur la partie médiane de laquelle est disposé un bloc de serrage (10) de l'extrémité (5) du cliché, étant prévue pour l'extrémité arrière (5) du cliché et des moyens de traction ou de poussée de l'extrémité du cliché dans la direction de l'axe du cylindre porte-plaque (1) étant prévus dans la région extérieure de la barre de serrage (9) et, par ailleurs, des baguettes de fixation (15) étant montées de manière à être translatables longitudinalement sur les deux côtés et dans la région extérieure de la barre arrière de fixation (9), un boulon d'excentrique (20), qui coopère avec un organe de réglage (25, 26) pour provoquer la translation longitudinale de la baguette de fixation (15), étant monté sur la barre de fixation (9), et la baguette de fixation (15) et des blocs translatables de serrage (32) étant guidés sur la baguette de fixation (15), ces blocs de serrage (32) étant déplacés au moyen de boulons de fixation à excentrique (34) montés dans la baguette de fixation (15) et comprimant et serrant l'extrémité (5) du cliché contre une surface de serrage (36) de la baguette de fixation (15).
  2. Dispositif selon la revendication 1, caractérisé en ce que le boulon d'excentrique (20) supporte un levier à fourche (25) qui coopère avec un organe de réglage, de préférence un cylindre hydraulique (26).
EP88112012A 1987-08-25 1988-07-26 Dispositif pour fixer un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative Expired - Lifetime EP0304646B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873728263 DE3728263A1 (de) 1986-02-27 1987-08-25 Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
DE3728263 1987-08-25

Publications (3)

Publication Number Publication Date
EP0304646A2 EP0304646A2 (fr) 1989-03-01
EP0304646A3 EP0304646A3 (en) 1989-10-18
EP0304646B1 true EP0304646B1 (fr) 1991-11-06

Family

ID=6334402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112012A Expired - Lifetime EP0304646B1 (fr) 1987-08-25 1988-07-26 Dispositif pour fixer un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative

Country Status (5)

Country Link
US (1) US4831931A (fr)
EP (1) EP0304646B1 (fr)
JP (1) JPS6482953A (fr)
CN (1) CN1008161B (fr)
DE (1) DE3866063D1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918215C1 (fr) * 1989-06-03 1990-11-08 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3933678A1 (de) * 1989-10-09 1991-04-18 Miller Johannisberg Druckmasch Vorrichtung zum positionsgenauen spannen einer druckplatte auf einem druckzylinder
DE3934334C1 (fr) * 1989-10-14 1991-04-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3936459C1 (fr) * 1989-11-02 1991-04-18 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE3936446A1 (de) * 1989-11-02 1991-05-08 Miller Johannisberg Druckmasch Plattenzylinder einer druckmaschine
US5199352A (en) * 1990-02-24 1993-04-06 Komori Corporation Plate lock-up device for printing press
DE4034494C1 (fr) * 1990-10-30 1992-03-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
EP0534214B1 (fr) * 1991-09-20 1996-03-06 Heidelberger Druckmaschinen Aktiengesellschaft Procédé et dispositif pour la correction de divergences trapézoidales des repères
US5317968A (en) * 1991-11-22 1994-06-07 Shinohara Machiner Co., Ltd. Plate cocking apparatus for sheet-fed printing press
DE4210897C1 (fr) * 1992-04-02 1993-08-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
JP2547584Y2 (ja) * 1993-05-24 1997-09-10 株式会社東京機械製作所 輪転印刷機の版胴
CN1040962C (zh) * 1993-06-16 1998-12-02 日本写真印刷株式会社 印刷辊和印刷辊用弹性印版
US5419248A (en) * 1994-03-09 1995-05-30 Heidelberg Druckmaschinen Ag Adjustable alignment device for printing plates
US5553545A (en) * 1995-09-26 1996-09-10 Heath Custom Press, Inc. Plate clamping and tensioning apparatus for rotary printing press
DE29621906U1 (de) * 1996-12-17 1997-02-06 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Stellvorrichtung für eine Höhenverstellung von diametral gegenüberliegend angeordneten Greiferaufschlagleisten an bogenführenden Zylindern von Druckmaschinen
DE10236865A1 (de) * 2002-08-12 2004-02-26 Koenig & Bauer Ag Zylinder in einer Druckeinheit mit mindestens einem Kanal mit mindestens einer Haltevorrichtung
DE102016201236A1 (de) * 2015-02-24 2016-08-25 Heidelberger Druckmaschinen Ag Druckmaschinenzylinder
DE102020123196A1 (de) 2020-09-04 2022-03-10 Kolbus Gmbh & Co. Kg Vorrichtung zum Spannen eines bogenförmigen Walzenbezugs um eine Walze
CN114030289B (zh) * 2021-11-05 2023-04-18 江苏富台机械科技有限公司 一种水性印刷机多用挂版机构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7219684U (de) * 1974-05-30 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Vorrichtung zum Befestigen biegsamer Druckplatten
CH560103A5 (fr) * 1973-03-01 1975-03-27 Heidelberger Druckmasch Ag
DE2431133A1 (de) * 1974-06-28 1976-01-15 Roland Offsetmaschf Druckplatten-spannvorrichtung
DE2500282A1 (de) * 1975-01-04 1976-07-29 Karlheinz Ahlsdorf Vorrichtung zum einspannen von an ihren einspannraendern passlochungen aufweisenden druckplatten in offset-maschinen
JPS57205152A (en) * 1981-06-13 1982-12-16 Komori Printing Mach Co Ltd Color register adjusting device for sheet printer
DE3228244A1 (de) * 1982-07-28 1984-02-02 Günter 8425 Neustadt Beil Klemmschiene zum befestigen von druckplatten am zylinder von druckmaschinen
CH653616A5 (fr) * 1983-07-26 1986-01-15 De La Rue Giori Sa Procede de fixation et d'ajustage d'une plaque d'impression sur un cylindre porte-plaques et dispositif de mise en oeuvre.
DE3606351A1 (de) * 1986-02-27 1987-09-03 Heidelberger Druckmasch Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen

Also Published As

Publication number Publication date
EP0304646A2 (fr) 1989-03-01
DE3866063D1 (de) 1991-12-12
JPH0528991B2 (fr) 1993-04-28
CN1008161B (zh) 1990-05-30
US4831931A (en) 1989-05-23
EP0304646A3 (en) 1989-10-18
JPS6482953A (en) 1989-03-28
CN1033593A (zh) 1989-07-05

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