EP0732202B1 - Cylindre avec un dispositif pour tendre une plaque d'impression - Google Patents

Cylindre avec un dispositif pour tendre une plaque d'impression Download PDF

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Publication number
EP0732202B1
EP0732202B1 EP96103836A EP96103836A EP0732202B1 EP 0732202 B1 EP0732202 B1 EP 0732202B1 EP 96103836 A EP96103836 A EP 96103836A EP 96103836 A EP96103836 A EP 96103836A EP 0732202 B1 EP0732202 B1 EP 0732202B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
slit
slot
tongues
plate
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
EP96103836A
Other languages
German (de)
English (en)
Other versions
EP0732202A1 (fr
Inventor
Helmut Puschnerat
Wolfgang Ruckmann
Peter Schröder
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0732202A1 publication Critical patent/EP0732202A1/fr
Application granted granted Critical
Publication of EP0732202B1 publication Critical patent/EP0732202B1/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
    • B41F27/125—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 on a curvilinear path, e.g. by winding on a roll

Definitions

  • the invention relates to a cylinder with a Device for clamping plates with folded edges Ends on a cylinder of a rotary printing press according to the preamble of claim 1.
  • DE 42 38 343 A1 is a clamping and Clamping device on a forme cylinder as a Foil-formed cliché became known. Both Ends of the film are narrow, axial running slot inserted in the forme cylinder and from a clamping and arranged inside the forme cylinder Clamping device held and tensioned.
  • the tension and Clamping device consists of one Actuating spindle on the a number of idlers are threaded. A rotation of the tension pulleys on the Fastening spindle is only after overcoming one Slip clutch between mounting spindle and Tension rollers possible.
  • the mounting spindle is on spring-mounted at both ends. This ensures that the rollers on the ends inserted into the slot of the cliché. The twist of the Actuating spindle follow the rollers and pull, - in pressed position -, the film ends in the slot inside.
  • DE-OS 21 26 941 shows a plate cylinder with a device for tensioning a printing plate.
  • the plate cylinder has one in a pit arranged, rotatable spindle. On this spindle is attached a pull sheet provided with a bar. One end of the pressure plate is used to hold the bar a molded hook.
  • the invention has for its object a cylinder with a device for tensioning plates with folded ends on this cylinder one To create rotary printing press with the one folded end of the plate in a tight, in a Shell of the cylinder introduced slot is retractable.
  • a slot that serves to accommodate bent ends is only slightly wider than twice the thickness of the plate.
  • a folded end of a plate does not have to be changed in thickness in order to be gripped by the device according to the invention and drawn into the slot of the cylinder.
  • the slot is only partially widened by depressions in the circumferential direction, which is why a very narrow channel is formed. This largely avoids channel impacts and the vibrations that occur as a result.
  • the cylinder according to the invention is in the drawing shown and is described in more detail below.
  • a cylinder 1 of a rotary printing machine for receiving flexible plates 2 with bent ends 3, 4 with at least one narrow slot 7 extending parallel to its axis of rotation and extending from a lateral surface 6 of the cylinder 1 into its interior 5.
  • Legs 8, 9 are folded at the ends 3, 4.
  • the leg 9 of the end 4 which runs after the end has in the present example a number of rectangular cutouts 11 arranged next to one another in the axial direction.
  • the slot 7 is preferably rectangular in cross section.
  • a side surface 13 of the slot 7 facing the end 4 of the plate 2 is provided with a number of U-shaped recesses 14 running parallel to this side surface 13.
  • These recesses 14 each have a spring-back space 16 pointing outwards in the direction of the lateral surface 6 of the cylinder 1, so that the respective recess 14 widens in the circumferential direction of the cylinder 1 and forms a bending edge 15 at its transition.
  • a bore 17 running parallel to the slot 7 is made in the cylinder 1.
  • a pivot lever 18, which in the present embodiment as a spindle 18 with a radius r18, z. B. r18 15 mm, is pivotally mounted centrally.
  • the grooves 22 of the spindle 18 and the recess 14 of the slot 7 of the cylinder 1 are adapted to one another.
  • an axially extending slot 23 which extends radially from the lateral surface 19 into an interior of the spindle 18, is introduced.
  • ends 24 of flexible, but pressure and tension-resistant tongues 26 are suspended, which in the present example as leaf springs, for.
  • tongues 26 lie in the U-shaped grooves 22 of the spindle 18 and adapt to the shape of the spindle 18 in the installed state.
  • a second, not connected to the spindle 18 end of the tongue 26 is formed in the direction of the leading end 3 of the plate 2 and acting in the direction of the spindle 18 barb 27.
  • An outside of the barb 27 pointing in the direction of the lateral surface 6 of the cylinder 1 is provided with a bevel 28 pointing in the direction of the leading end 3 of the plate 2.
  • a cam 29 pointing in the direction of the leading end 3 of the plate 2.
  • the tongues 26 extend over a length l26, z. B.
  • the axial position of the recesses 14 of the slot 7, the grooves 22 of the spindle 18 and the tongues 26 are adapted to one another.
  • the operation of the device according to the invention is as follows: In an insertion position (FIG. 1) of the spindle 18, the barb 27 of the respective tongue 26 is located in the area of the resilience space 16 of the recesses 14, just below the lateral surface 6 of the cylinder 1. In this position, the leading, beveled end 3 of the plate is first 2 led into the slot 7. Then the leg 9 of the trailing end 4 of the plate 2, which is provided with cutouts 11 in the area of the tongues 26, is brought into the slot 7. Here, the leg 9 abuts the bevel 28 of the barbs 27 and presses them around the bending edge 15 into the spring-back space 16 of the recess 14 of the slot 7.
  • the spindle 18 is rotated counterclockwise, whereby the tongues 26 pull the suspended leg 9 of the plate 2 into the slot 7. Barbs 27 and legs 9 remain in the slot 7. After the clamping process has been completed, the spindle 18 is locked in a rotationally fixed or spring-loaded manner.
  • the spindle 16 in Turned clockwise, the cams 29 of the tongues 26th press against the leg 9 of the end 4 after running.
  • the tongues spring as the rotation continues 27 outwards into their extended position so that the tongues 27 stand tangential to the spindle 16 and in the Depressions 14 of the slot 7 run.
  • the spindle 18 is rotated until the leg 9 of the trailing end 4 completely out of the slot 7 is removed, i.e. the cams 29 of the tongues 26 are in the Area of the outer surface 6 of the cylinder 1. Das trailing end 4 of the plate 2 can from the tongue 27 be removed.
  • the device according to the invention can be attached to both ends 3, 4 of the plate 2 act simultaneously or it can for each end 3, 4 may be provided with its own device.
  • the slot 7 can be widened to the extent that both the bevelled ends 3, 4 and the tongues 21 are included as well as the spring-back space 16 is formed.
  • the slot 7 around the Depth of the U-shaped described in the first example Wells 14 be widened and these wells 14 can then be omitted. In this case it would be Side surface 13 of the slot 7 with a the bending edge 15 forming, axially extending, bead-like or hemispherical elevation. Between one such increase and the beginning 10 of the slot 7 will thus also created a spring-back space 16.

Claims (9)

  1. Cylindre avec un dispositif pour tendre des plaques (2) à extrémités repliées (3 ; 4) sur un cylindre (1) d'une presse rotative, comprenant un levier pivotant (18) disposé à l'intérieur (5) du cylindre (1), le cylindre (1) étant pourvu d'une fente étroite axiale (7) pour recevoir les extrémités repliées (3 ; 4) de la plaque (2), caractérisé en ce qu'au levier pivotant (18) est fixée une pluralité de languettes (26), en ce que les languettes (26) sont disposées dans la fente (7) pour pouvoir être déplacées du début (10) de la fente (7) en direction de l'intérieur (5) du cylindre (1) et dans la direction opposée, et en ce que les languettes (26) sont chacune munies d'un cran d'arrêt (27) qui s'engage dans les perforations (11) d'au moins une extrémité repliée (3 ; 4) de la plaque (2).
  2. Cylindre selon la revendication 1, caractérisé en ce qu'une face latérale (13) de la fente (7) est pourvue d'une arête de flexion (15) et d'une cavité de retour élastique (16) qui prolonge l'arête de flexion (15) en direction du début (10) de la fente (7) et dans laquelle les crans d'arrêt (27) de la languette (26) peuvent revenir élastiquement.
  3. Cylindre selon la revendication 1, caractérisé en ce qu'une face latérale (13) de la fente (7) est pourvue d'une pluralité de renfoncements (14), et en ce que les languettes (26) sont disposées avec une possibilité de déplacement dans les renfoncements (14) de la fente (7).
  4. Cylindre selon les revendications 1 à 3, caractérisé en ce que les renfoncements (14) de la fente (7) s'élargissent en direction de la surface périphérique (6) et dans le sens circonférentiel du cylindre (1) en formant une cavité de retour élastique (16).
  5. Cylindre selon la revendication 1, caractérisé en ce que, sur la languette (26), à une distance a du cran d'arrêt (27), est prévue une saillie (29) qui coopère avec une branche (8, 9) d'une extrémité repliée (3 ; 4).
  6. Cylindre selon les revendications 1, 3 et 5, caractérisé en ce que la languette (26) est réalisée dans une matière qui est élastique en flexion et rigide en traction et en pression.
  7. Cylindre selon la revendication 6, caractérisé en ce que la languette (26) est réalisée en acier à ressort.
  8. Cylindre selon les revendications 1 à 7, caractérisé en ce que les crans d'arrêt (27) sont pourvus, en direction de la surface périphérique (6) du cylindre (1), d'un chanfrein (28).
  9. Cylindre selon la revendication 1, caractérisé en ce que le levier pivotant (18) est conçu sous la forme d'une broche (18).
EP96103836A 1995-03-16 1996-03-12 Cylindre avec un dispositif pour tendre une plaque d'impression Expired - Lifetime EP0732202B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509563 1995-03-16
DE19509563A DE19509563C2 (de) 1995-03-16 1995-03-16 Zylinder mit einer Vorrichtung zum Spannen von Platten

Publications (2)

Publication Number Publication Date
EP0732202A1 EP0732202A1 (fr) 1996-09-18
EP0732202B1 true EP0732202B1 (fr) 1998-06-03

Family

ID=7756856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103836A Expired - Lifetime EP0732202B1 (fr) 1995-03-16 1996-03-12 Cylindre avec un dispositif pour tendre une plaque d'impression

Country Status (4)

Country Link
US (1) US5644984A (fr)
EP (1) EP0732202B1 (fr)
JP (1) JP2801578B2 (fr)
DE (2) DE19509563C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2733718B1 (fr) * 1995-05-04 1997-08-01 Heidelberg Harris Sa Dispositif de liaison entre des elements de retenue et une traverse d'un cylindre de forme d'impression
US6131513A (en) * 1998-10-23 2000-10-17 Heidelberger Druckmaschinen Ag Printing press with simple lock-up plate cylinder
ATE255502T1 (de) * 1999-03-26 2003-12-15 Heidelberger Druckmasch Ag Einrichtung zum spannen von druckplatten in spannkanälen reduzierter grösse
US6378430B1 (en) 1999-10-15 2002-04-30 King Press Corporation Cylinder with plate gripping device
JP3446122B2 (ja) * 2000-07-12 2003-09-16 株式会社東京機械製作所 ブランケット胴
DE10208262A1 (de) * 2002-02-26 2003-09-04 Roland Man Druckmasch Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
FR2844743B1 (fr) * 2002-09-19 2004-12-17 Goss Systemes Graphiques Nante Ensemble comprenant une unite de blanchet et un cylindre a dispositif de fixation de blanchet, cylindre, unite de blanchet et presse offset correspondants
DE102010001751B4 (de) 2010-02-10 2013-05-16 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Befestigen zumindest eines Aufzugs auf einem Zylinder
US10737481B2 (en) * 2017-07-03 2020-08-11 Manroland Goss Web Systems Gmbh Plate cylinder with plate lockup mechanism and related printing press and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109152A (en) * 1937-03-26 1938-02-22 Meisel Press Mfg Company Securing plate on printing press cylinders
US3626848A (en) * 1969-06-09 1971-12-14 American Rockwell Corp Lockup for thin plates
DE2126941A1 (de) * 1971-05-29 1972-11-30 Albert Schnellpressen Vorrichtung zum Spannen von biegsamen Druckplatten auf dem Formzylinder von Rotationsdruckmaschinen
US3727551A (en) * 1971-07-22 1973-04-17 North American Rockwell Reversible lockup for flexible printing plate
DE2225016C3 (de) * 1972-05-23 1976-01-29 Koenig & Bauer Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf formzylinder von rotationsdruckmaschinen
JPH02103148A (ja) * 1988-10-13 1990-04-16 Mitsubishi Heavy Ind Ltd 版締め装置
DE4238343C2 (de) * 1992-11-13 2003-03-27 Kocher & Beck Gmbh & Co Rotati Spannvorrichtung für ein Klischee
FR2709090B1 (fr) * 1993-08-20 1995-11-10 Heidelberg Harris Sa Dispositif à crochet et escamotable pour maintenir une plaque d'impression sur un cylindre porte-plaque, dans une imprimante rotative, et imprimante rotative comportant un tel dispositif.

Also Published As

Publication number Publication date
JPH08267718A (ja) 1996-10-15
DE59600234D1 (de) 1998-07-09
JP2801578B2 (ja) 1998-09-21
US5644984A (en) 1997-07-08
DE19509563A1 (de) 1996-09-19
EP0732202A1 (fr) 1996-09-18
DE19509563C2 (de) 1997-01-23

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