EP0238804A2 - Dispositif de fixation des clichés souples sur les cylindres de clichés dans les rotatives - Google Patents

Dispositif de fixation des clichés souples sur les cylindres de clichés dans les rotatives Download PDF

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Publication number
EP0238804A2
EP0238804A2 EP87101191A EP87101191A EP0238804A2 EP 0238804 A2 EP0238804 A2 EP 0238804A2 EP 87101191 A EP87101191 A EP 87101191A EP 87101191 A EP87101191 A EP 87101191A EP 0238804 A2 EP0238804 A2 EP 0238804A2
Authority
EP
European Patent Office
Prior art keywords
clamping
plate
rail
plate end
segments
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.)
Granted
Application number
EP87101191A
Other languages
German (de)
English (en)
Other versions
EP0238804B1 (fr
EP0238804A3 (en
Inventor
Willi Jescke
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
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0238804A2 publication Critical patent/EP0238804A2/fr
Publication of EP0238804A3 publication Critical patent/EP0238804A3/de
Application granted granted Critical
Publication of EP0238804B1 publication Critical patent/EP0238804B1/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
    • B41F27/005—Attaching and registering printing formes to supports
    • 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, which are assigned to the two plate ends, which are supported for tensioning the printing plate on the side walls of a cylinder channel and with means for stretching or compressing the trailing plate end in Axial direction of the plate cylinder.
  • Such a device is known from DE-C 23 10 228, in which two tensioning rail pairs are assigned to the rear plate end, which enable the rear end of the pressure plate to be deformed by means of adjusting screws. These two pairs of clamping rails can be moved both in the circumferential direction for clamping the pressure plate and axially to the plate cylinder. This makes it possible, e.g. in so-called "tight printing", stretching the rear plate end so that an exact register can be achieved. Due to the division of the rear tensioning rail, it is difficult in practical handling to prevent the tensioning rail, which consists of several sections, from buckling.
  • the object is achieved in that a one-piece clamping rail is provided for the trailing plate end, that a clamping stamp for the plate end is arranged in the central region of the clamping rail and that clamping segments are provided in the outer region of the clamping rail can be operated to stretch or compress the plate end.
  • the tensioning rail Due to the one-piece design of the tensioning rail, a high stability of the same is achieved, so that it can be adjusted easily both in the circumferential direction for tensioning the pressure plate and laterally. This also ensures a uniform clamping of the printing plate, with stretching or compression of the trailing plate end being carried out over the clamping segments in the tensioned state thereof.
  • the clamping stamp provided in the middle area prevents the plate end from being moved unintentionally, so that the set register is retained with certainty.
  • the arrangement of the tensioning segments in the outer area of the tensioning rails causes the plate end to be compressed or stretched in a very long area, so that the same is prevented from bulging or tearing.
  • 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 plate end 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 exact alignment of the front plate end 4. As soon as the front plate end 4 is clamped, the plate cylinder is rotated one turn to place the pressure plate 2, so that the trailing plate end 5 can also be hung on a tensioning rail 9.
  • a clamping stamp 10 is provided, which is preferably made of polyurethane and can be adjusted and clamped to the angled area of the trailing plate end 5 by means of adjusting screws 11, which are supported on the tensioning rail 9 via a bearing 12. Then the pressure plate 2 is clamped on the plate cylinder 1 via compression springs 13, so that the two clamping rails 6 and 9 are moved into the position shown in FIG. Here, the two plate ends 4 and 5 are under a cover plate 14, which is an out prevents the same from sliding.
  • the relaxed position of the tensioning rail 6 is indicated by dash-dotted lines in FIG. 1.
  • FIGS. 2 and 3 show the clamping segments 15 provided on both sides of the clamping rail 9 in the outer region, which are pivotably attached to the clamping rail 9 via bearing bolts 16.
  • the clamping segments 15 are provided towards the plate end 5 with a clamping surface 17 which runs eccentrically to the bearing pin 16 and which has a neutral central position (as shown). If the clamping segment 15 is pivoted to the right or left, the plate end 5 is first clamped by the eccentric design of the clamping surface 17 and then moved by a small amount in the axial direction, so that the plate end 5 is stretched or compressed.
  • the slope of the eccentric clamping surface 17 increases the force for the clamping during stretching and upsetting and is self-locking.
  • an actuating means engages on the clamping segment 15, by means of which the lateral pivoting thereof can be carried out.
  • this adjusting means is an adjusting screw that can be turned by hand.
  • the pivoting was provided in Figures 2 to 4 via an actuator 19, which causes a pivoting of the clamping segment 15 via a thread 20 and a fork lever 21.
  • the stretching or compression of the plate end 5 is carried out at a standstill and, in the case of motorized adjustment, during the standstill or when the machine is running.
  • their clamping surfaces 17 can be coated with a sharp-edged corundum coating.
  • a pressure bearing 22 is provided opposite the clamping surface 17 of the clamping segment 15 below the plate end 5, which is fastened by screws 23 in a recess 24 in the clamping rail 9.
  • This thrust bearing can consist of polyurethane and have 15 slots 25 transverse to the direction of movement of the clamping segments. These support the lateral movement of the plate end 5 when stretching or compressing the same.
  • FIG. 4 shows a different type of thrust bearing 26, which serves the same purpose but is mounted on needle bearings 27.
  • the pressure bearing 26 is held in the recess 29 in a longitudinally displaceable manner by means of brackets 28.
  • the two clamping segments 15 are normally pivoted evenly by a small amount. This amount is based on the corresponding correction of the trailing plate end.
  • a one-sided correction can also be carried out by actuating only one clamping segment 15. Regardless of this, due to the stable, one-piece mounting of the tensioning rail 9, any desired adjustment thereof can be carried out by the printer without this resulting in an undesired impairment of the tensioning quality.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP87101191A 1986-02-27 1987-01-28 Dispositif de fixation des clichés souples sur les cylindres de clichés dans les rotatives Expired - Lifetime EP0238804B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606351 1986-02-27
DE19863606351 DE3606351A1 (de) 1986-02-27 1986-02-27 Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen

Publications (3)

Publication Number Publication Date
EP0238804A2 true EP0238804A2 (fr) 1987-09-30
EP0238804A3 EP0238804A3 (en) 1989-11-08
EP0238804B1 EP0238804B1 (fr) 1991-10-09

Family

ID=6295061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101191A Expired - Lifetime EP0238804B1 (fr) 1986-02-27 1987-01-28 Dispositif de fixation des clichés souples sur les cylindres de clichés dans les rotatives

Country Status (6)

Country Link
US (1) US4712476A (fr)
EP (1) EP0238804B1 (fr)
JP (1) JPS62199447A (fr)
CN (1) CN87100585B (fr)
CA (1) CA1280034C (fr)
DE (2) DE3606351A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806526A1 (de) * 1988-03-01 1989-09-14 Heidelberger Druckmasch Ag Vorrichtung zum spannen von biegsamen druckplatten am plattenzylinder von rotationsdruckmaschinen
GB2236709A (en) * 1989-10-14 1991-04-17 Heidelberger Druckmasch Ag Printing plate deformation apparatus
EP0426022A2 (fr) * 1989-11-02 1991-05-08 MAN Roland Druckmaschinen AG Cylindre de plaque dans une machine d'impression
EP0534214A1 (fr) * 1991-09-20 1993-03-31 Heidelberger Druckmaschinen Aktiengesellschaft Procédé et dispositif pour la correction de divergences trapézoidales des repères
EP0557729A1 (fr) * 1992-02-21 1993-09-01 MAN Roland Druckmaschinen AG Dispositif pour fixer un cliché sur un cylindre porte-plaque
GB2298392A (en) * 1995-03-03 1996-09-04 Heidelberger Druckmasch Ag Apparatus for tensioning printing formes on cylinders of rotary printing machines

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728263A1 (de) * 1986-02-27 1989-03-09 Heidelberger Druckmasch Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
EP0304646B1 (fr) * 1987-08-25 1991-11-06 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour fixer un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative
DE3731684A1 (de) * 1987-09-21 1989-04-06 Koenig & Bauer Ag Aufspannvorrichtung
DE3918215C1 (fr) * 1989-06-03 1990-11-08 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3936459C1 (fr) * 1989-11-02 1991-04-18 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE3936458C1 (fr) * 1989-11-02 1991-04-11 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4034494C1 (fr) * 1990-10-30 1992-03-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE9210964U1 (de) * 1991-08-16 1992-11-12 Koenig & Bauer AG, 8700 Würzburg Einrichtung zum Spannen und Justieren von biegsamen Druckplatten auf Plattenzylindern von Rotationsdruckmaschinen
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
US5347928A (en) * 1992-10-29 1994-09-20 Sakurai Graphic Systems Corporation Plate clamping unit for offset press
DE69416274T2 (de) * 1993-06-16 1999-06-24 Nissha Printing Co., Ltd., Kyoto Druckzylinder und elastische druckplatte für diesen druckzylinder
US5419248A (en) * 1994-03-09 1995-05-30 Heidelberg Druckmaschinen Ag Adjustable alignment device for printing plates
DE19515843C1 (de) * 1995-04-29 1996-06-27 Heidelberger Druckmasch Ag Vorrichtung zum Spannen einer Druckplatte auf einem Plattenzylinder von Rotationsdruckmaschinen
US7271339B2 (en) * 2004-08-17 2007-09-18 Thomas & Betts International, Inc. Wall plate assembly
US20080148974A1 (en) * 2006-12-22 2008-06-26 Heidelberger Druckmaschinen Ag Printing Press with Printing Plate Manipulation Device
DE102008042703B4 (de) * 2008-10-09 2011-04-07 Koenig & Bauer Aktiengesellschaft Formzylinder einer Druckmaschine und ein Verfahren zum Aufplatten mindestens einer biegsamen Druckform
WO2013001010A2 (fr) * 2011-06-30 2013-01-03 Koenig & Bauer Aktiengesellschaft Cylindre de plaque et procédé d'agencement d'une plaque d'impression sur un cylindre de plaque
DE102012202078B3 (de) * 2012-02-13 2013-02-28 Koenig & Bauer Aktiengesellschaft Zylinder einer Rotationsdruckmaschine
CN103612481B (zh) * 2013-10-30 2016-01-06 高斯图文印刷系统（中国）有限公司 一种印刷机的印版张紧气囊
CN106183371A (zh) * 2016-07-08 2016-12-07 江苏华宇印涂设备集团有限公司 印铁机用印版滚筒

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2219847A1 (fr) * 1973-03-01 1974-09-27 Heidelberger Druckmasch Ag
DE2431133A1 (de) * 1974-06-28 1976-01-15 Roland Offsetmaschf Druckplatten-spannvorrichtung
DE2501511A1 (de) * 1975-01-16 1976-07-22 Maschf Augsburg Nuernberg Ag Vorrichtung zum befestigen einer biegsamen druckplatte auf dem plattenzylinder einer rotationsdruckmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57205152A (en) * 1981-06-13 1982-12-16 Komori Printing Mach Co Ltd Color register adjusting device for sheet printer
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.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2219847A1 (fr) * 1973-03-01 1974-09-27 Heidelberger Druckmasch Ag
DE2431133A1 (de) * 1974-06-28 1976-01-15 Roland Offsetmaschf Druckplatten-spannvorrichtung
DE2501511A1 (de) * 1975-01-16 1976-07-22 Maschf Augsburg Nuernberg Ag Vorrichtung zum befestigen einer biegsamen druckplatte auf dem plattenzylinder einer rotationsdruckmaschine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806526A1 (de) * 1988-03-01 1989-09-14 Heidelberger Druckmasch Ag Vorrichtung zum spannen von biegsamen druckplatten am plattenzylinder von rotationsdruckmaschinen
GB2236709A (en) * 1989-10-14 1991-04-17 Heidelberger Druckmasch Ag Printing plate deformation apparatus
GB2236709B (en) * 1989-10-14 1993-10-20 Heidelberger Druckmasch Ag Printing plate deformation apparatus
EP0426022A2 (fr) * 1989-11-02 1991-05-08 MAN Roland Druckmaschinen AG Cylindre de plaque dans une machine d'impression
EP0426022A3 (en) * 1989-11-02 1991-09-18 Man Miller Druckmaschinen Gmbh Plate cylinder of a printing press
EP0534214A1 (fr) * 1991-09-20 1993-03-31 Heidelberger Druckmaschinen Aktiengesellschaft Procédé et dispositif pour la correction de divergences trapézoidales des repères
EP0557729A1 (fr) * 1992-02-21 1993-09-01 MAN Roland Druckmaschinen AG Dispositif pour fixer un cliché sur un cylindre porte-plaque
GB2298392A (en) * 1995-03-03 1996-09-04 Heidelberger Druckmasch Ag Apparatus for tensioning printing formes on cylinders of rotary printing machines
GB2298392B (en) * 1995-03-03 1998-04-29 Heidelberger Druckmasch Ag Apparatus for tensioning printing formes on a forme cylinder of a rotary printing machine

Also Published As

Publication number Publication date
US4712476A (en) 1987-12-15
DE3773516D1 (de) 1991-11-14
EP0238804B1 (fr) 1991-10-09
CN87100585B (zh) 1988-06-29
JPS62199447A (ja) 1987-09-03
CN87100585A (zh) 1987-09-09
DE3606351C2 (fr) 1991-09-05
CA1280034C (fr) 1991-02-12
JPH0521073B2 (fr) 1993-03-23
EP0238804A3 (en) 1989-11-08
DE3606351A1 (de) 1987-09-03

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