EP0238804B1 - 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
EP0238804B1
EP0238804B1 EP87101191A EP87101191A EP0238804B1 EP 0238804 B1 EP0238804 B1 EP 0238804B1 EP 87101191 A EP87101191 A EP 87101191A EP 87101191 A EP87101191 A EP 87101191A EP 0238804 B1 EP0238804 B1 EP 0238804B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
plate
plate end
clamping
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.)
Expired - Lifetime
Application number
EP87101191A
Other languages
German (de)
English (en)
Other versions
EP0238804A3 (en
EP0238804A2 (fr
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 pairs of tensioning rails 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 one-piece design of the tensioning rail ensures a high level of stability, so that it can be easily adjusted both in the circumferential direction for tensioning the pressure plate and laterally. This also ensures a uniform clamping of the printing plate, with the stretching segments being able to stretch or compress the trailing plate end in the clamped 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 by means of 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 slide out the same prevented.
  • the relaxed position of the tensioning rail 6 is indicated by dash-dotted lines in FIG. 1.
  • FIGS. 2 and 3 show the tensioning segments 15 provided on both sides of the tensioning rail 9 in the outer region, which are pivotably attached to the tensioning 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 and 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 so as to be longitudinally displaceable via 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. By clamping the same via the clamping punch 10, if necessary, 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)

Claims (8)

  1. Dispositif destiné à serrer des plaques d'impression (2) souples sur le cylindre porte-plaque (1) de machines rotatives, comportant des barrettes de serrage (6, 9) qui sont associées aux deux extrémités de plaque (4, 5), les barrettes de serrage (6, 9) prenant appui contre les parois latérales d'un canal de cylindre (3), pour le serrage des plaques d'impression (2) et comportant des moyens (15) destinés à étirer ou à relâcher de préférence l'extrémité arrière de plaque (5) dans la direction axiale du cylindre porte-plaque (1), caractérisé en ce que pour l'extrémité arrière de plaque (5) il est prévu une barrette de serrage (9) d'une seule pièce, en ce qu'un poinçon de blocage (10) pour l'extrémité de plaque (5) est placé sur la barrette de serrage (9), dans sa région centrale, et en ce qu'il est prévu dans la région extérieure de la barrette de serrage (9), des segments de serrage (15) qui peuvent être actionnés pour étirer ou relâcher l'extrémité de plaque (5).
  2. Dispositif selon la revendication 1, caractérisé en ce que les segments de serrage (15) sont montés pivotants, par l'intermédiaire d'axes de palier (16), sur la barrette de serrage (9) et comportent des surfaces de serrage (17), excentrées par rapport à l'axe de palier (16), pour l'extrémité de plaque d'impression (5).
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce que les segments de serrage (15) peuvent pivoter au moyen de servomoteurs (19) qui sont montés pivotants sur la barrette de serrage (9).
  4. Dispositif selon les revendications 1 et 2, caractérisé en ce que des paliers de pression (22, 26) qui soutiennent le déplacement axial de l'extrémité de plaque (5), sont encastrés dans la barrette de serrage (9), par rapport aux surfaces de serrage (17) des segments de serrage (15).
  5. Dispositif selon la revendication 4, caractérisé en ce que les paliers de pression (22) sont en polyuréthanne et présentent des fentes (25), transversalement à la direction de déplacement des segments de serrage (15).
  6. Dispositif selon la revendication 4, caractérisé en ce que les paliers de pression (26) sont montés coulissant axialement par rapport au cylindre porte-plaque (1), sur des roulements à aiguilles (27).
  7. Dispositif selon les revendications 1 et 2, caractérisé en ce que les surfaces de serrage (17) des éléments de serrage (15) sont recouvertes d'un revêtement de corindon à arêtes vives.
  8. Dispositif selon la revendication 1, caractérisé en ce que le poinçon de blocage (10) est en polyuréthanne et est réglable au moyen de vis de réglage (11) qui prennent appui contre la barrette de serrage (9), par un palier (12).
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
DE19863606351 DE3606351A1 (de) 1986-02-27 1986-02-27 Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
DE3606351 1986-02-27

Publications (3)

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

Families Citing this family (27)

* 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
DE3866063D1 (de) * 1987-08-25 1991-12-12 Heidelberger Druckmasch Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen.
DE3731684A1 (de) * 1987-09-21 1989-04-06 Koenig & Bauer Ag Aufspannvorrichtung
DE3806526A1 (de) * 1988-03-01 1989-09-14 Heidelberger Druckmasch Ag Vorrichtung zum spannen von biegsamen druckplatten am plattenzylinder von rotationsdruckmaschinen
DE3918215C1 (fr) * 1989-06-03 1990-11-08 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
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
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
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
DE4205276A1 (de) * 1992-02-21 1993-08-26 Roland Man Druckmasch Vorrichtung zum aufspannen einer druckplatte auf einen plattenzylinder
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 Druckzylinder und elastische druckplatte für diesen druckzylinder
US5419248A (en) * 1994-03-09 1995-05-30 Heidelberg Druckmaschinen Ag Adjustable alignment device for printing plates
DE19507368C1 (de) * 1995-03-03 1996-03-21 Heidelberger Druckmasch Ag Vorrichtung zum Spannen von Druckformen auf dem Formzylinder einer Rotationsdruckmaschine
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
CN101204869B (zh) * 2006-12-22 2013-05-08 海德堡印刷机械股份公司 具有印版操作装置的印刷机
DE102008042703B4 (de) * 2008-10-09 2011-04-07 Koenig & Bauer Aktiengesellschaft Formzylinder einer Druckmaschine und ein Verfahren zum Aufplatten mindestens einer biegsamen Druckform
EP2736723B1 (fr) * 2011-06-30 2015-11-18 Koenig & Bauer AG 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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH560103A5 (fr) * 1973-03-01 1975-03-27 Heidelberger Druckmasch Ag
DE2431133A1 (de) * 1974-06-28 1976-01-15 Roland Offsetmaschf Druckplatten-spannvorrichtung
DE2501511C2 (de) * 1975-01-16 1983-06-01 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Vorrichtung zum Befestigen einer biegsamen Druckplatte auf dem Plattenzylinder einer Rotationsdruckmaschine
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.

Also Published As

Publication number Publication date
CN87100585B (zh) 1988-06-29
DE3606351A1 (de) 1987-09-03
DE3773516D1 (de) 1991-11-14
DE3606351C2 (fr) 1991-09-05
EP0238804A3 (en) 1989-11-08
CN87100585A (zh) 1987-09-09
EP0238804A2 (fr) 1987-09-30
CA1280034C (fr) 1991-02-12
US4712476A (en) 1987-12-15
JPS62199447A (ja) 1987-09-03
JPH0521073B2 (fr) 1993-03-23

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