EP0179148B1 - Dispositif de serrage pour planches d'impression d'imprimeuses - Google Patents

Dispositif de serrage pour planches d'impression d'imprimeuses Download PDF

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Publication number
EP0179148B1
EP0179148B1 EP85902499A EP85902499A EP0179148B1 EP 0179148 B1 EP0179148 B1 EP 0179148B1 EP 85902499 A EP85902499 A EP 85902499A EP 85902499 A EP85902499 A EP 85902499A EP 0179148 B1 EP0179148 B1 EP 0179148B1
Authority
EP
European Patent Office
Prior art keywords
shaft
printing
clamping device
printing plates
clamping
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
Application number
EP85902499A
Other languages
German (de)
English (en)
Other versions
EP0179148A1 (fr
Inventor
Klaus GÜTHLING
Adolf Meyer
Manfred Miethe
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.)
FA WILHELM BARENSCHEE
Original Assignee
FA WILHELM BARENSCHEE
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 FA WILHELM BARENSCHEE filed Critical FA WILHELM BARENSCHEE
Publication of EP0179148A1 publication Critical patent/EP0179148A1/fr
Application granted granted Critical
Publication of EP0179148B1 publication Critical patent/EP0179148B1/fr
Expired 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 clamping device for cylinders for clamping flexible printing plates on printing presses, which are provided at their ends with bends which can be fastened to a grooved shaft, the shaft being tensioned by means of a torsion bar spring.
  • a clamping device of this type US-A-3 382 799
  • the shaft is designed with a single groove for receiving the fold of a printing plate in such a way that only one direction of rotation of the associated printing cylinder is possible.
  • the shaft can be tensioned using a torsion bar spring.
  • the intended fastening of the tensioning device on the pressure cylinder requires complicated work processes on the one hand, on the other hand the effective cross section of the pressure cylinder is weakened relatively strongly by the juxtaposition of the tensioning device and a cylinder filler.
  • the invention is concerned with the task of designing a tensioning device of the type mentioned at the outset in such a way that undesired conversions are avoided and the tensioning device can be attached to the pressure cylinder in a simple manner.
  • a tensioning device according to the claim With the help of the shaft slotted in two directions, it is possible at any time to clamp a pressure plate in such a way that the clamping coincides with the rotation.
  • the tensioning device according to the invention has the advantage that the pressure plates are constantly tensioned in the circumferential direction during the printing process by the force of the torsion bar spring.
  • the tensioning device is easily attached to the pressure cylinder by a screw, which is located in the inner region of the tensioning device. The screw can be reached at this point because the shaft itself is provided with a correspondingly large through hole.
  • 20 denotes the recess in a plate cylinder.
  • An insert or the device referred to as a clamping device fits into this recess.
  • the tensioning device comprises a shaft 10 and the torsion spring 13.
  • the tensioning shaft is provided with two slots 11 and 12, which are arranged symmetrically to the central position of the shaft. With 20 is the opening through which access to the tension shaft 10 is possible.
  • With 14 and 15 two pressure plates are designated, which have at their ends angular parts that can be fixed to corresponding parts. One end is attached directly to the pressure cylinder, while the other end is attached in one of the slots 11 or 12 of the slot shaft 10.
  • Fig. 1 the screw can be seen on the left, with the help of which the clamping device is attached to the pressure cylinder.
  • the shaft 10 can be seen, which has a through hole 30. If the shaft is in the middle position, a screw can be turned with a suitable tool through the through hole 30, which screw is located in a countersink hole 31 and through which the clamping device is fastened to the pressure cylinder.
  • FIG. 3 shows how the force of the torsion bar spring 13 can be transmitted to the shaft 10.
  • a gear or toothed segment 32 is attached to the shaft, which with another gear 33 meshes.
  • the gear 33 is attached to one end of the torsion bar spring 13. It can be seen that with the aid of a tool which is introduced into a bore 40, the shaft can be preloaded via the torsion bar spring 13 and the gear parts 32 and 33. Usually no translation of the forces between the gears 32 and 33 is required, but you can choose the gear 33 slightly smaller in diameter, so as to create a space-saving embodiment.

Landscapes

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

Abstract

Dispositif de serrage pour des cylindres afin de serrer des planches d'impression pliables ou des blanchets à des imprimeuses qui sont dotées à leurs extrémités de replis ou d'angles de renfort pouvant être fixés à un arbre fendu, l'arbre étant serré au moyen d'un ressort de barre de torsion. L'arbre (10) comporte deux fentes (11, 12) opposées mutuellement.

Claims (1)

  1. Dispositif de serrage pour cylindre destiné à la fixation de planches d'impression souples (14,15) sur des machines imprimeuses, ces planches étant pourvues, à leurs extrémités, de bords biseautés, aptes à être fixés sur un arbre rainuré (10), lequel est mis en contrainte au moyen d'une barre de torsion élastique (13), caractérisé en ce que l'arbre (10) comporte deux fentes (11, 12) dirigées en sens inverse l'une de l'autre, et disposées symétriquement par rapport à la position moyenne de l'arbre (10), en ce que la barre de torsion (13) est disposée à l'exterieur de l'arbre (10), une transmission (32, 33), en particulier à roues dentées, étant prévue pour transmettre la force de mise en contrainte, et en ce que l'arbre (10) est formé avec un perçage de traversée (30), qui est constitué pour correspondre, dans la position moyenne de l'arbre (10), à un perçage chanfreiné (31) et à une vis qui s'y trouve, dans le but de fixer le dispositif de serrage par rapport au cylindre à planches.
EP85902499A 1984-05-02 1985-04-26 Dispositif de serrage pour planches d'impression d'imprimeuses Expired EP0179148B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843416187 DE3416187A1 (de) 1984-05-02 1984-05-02 Plattenzylinderanordnung fuer biegsame druckplatten
DE3416187 1984-05-02

Publications (2)

Publication Number Publication Date
EP0179148A1 EP0179148A1 (fr) 1986-04-30
EP0179148B1 true EP0179148B1 (fr) 1989-01-18

Family

ID=6234780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85902499A Expired EP0179148B1 (fr) 1984-05-02 1985-04-26 Dispositif de serrage pour planches d'impression d'imprimeuses

Country Status (5)

Country Link
US (1) US4641576A (fr)
EP (1) EP0179148B1 (fr)
JP (1) JPS62500848A (fr)
DE (2) DE3416187A1 (fr)
WO (1) WO1985005075A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006002330A1 (de) * 2006-01-18 2007-07-19 Koenig & Bauer Aktiengesellschaft Plattenspannvorrichtung für den Plattenzylinder einer Druckmaschine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8616952D0 (en) * 1986-07-11 1986-08-20 Hercules Inc Printing plate
DE3731779A1 (de) * 1987-09-22 1989-03-30 Koenig & Bauer Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf formzylinder von rotationsdruckmaschinen
DE4244077C2 (de) * 1992-12-24 1995-06-08 Koenig & Bauer Ag Vorrichtung zum Aufspannen von biegsamen Druckplatten auf einen Formzylinder einer Rotationsdruckmaschine
US5413042A (en) * 1994-02-22 1995-05-09 Heidelberg Druckmaschinen Ag Lock-up assembly for securing a printing plate on a plate cylinder
DE4447436C2 (de) * 1994-12-29 1997-03-13 Prolux Maschinenbau Gmbh Verfahren und Vorrichtung zur thermischen Behandlung leuchtstoffbeschichteter Glasgefäße
DE19729375A1 (de) * 1997-07-09 1999-01-14 Ltg Lufttechnische Gmbh Vorrichtung zum Befestigen einer biegsamen Platte auf dem Umfang des Zylinders einer Lackiermaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075635B (de) * 1960-02-18 R W Crabtree &. Sons Limited Leeds Yorkshire (Großbritannien) Vorrichtung zum Spannen des Aufzuges auf Druckzylindern
US2720673A (en) * 1950-12-01 1955-10-18 Ford Motor Co Door checking and holding device
US3382799A (en) * 1966-07-29 1968-05-14 Cottrell Company Plate lockup means for offset or wraparound printing presses
US3991675A (en) * 1971-04-01 1976-11-16 Standiford Fred W Clamping saddles for thin flexible printing plates
DE2126941A1 (de) * 1971-05-29 1972-11-30 Albert Schnellpressen Vorrichtung zum Spannen von biegsamen Druckplatten auf dem Formzylinder von Rotationsdruckmaschinen
US3771449A (en) * 1971-11-24 1973-11-13 G Hill Adjustable plate saddle with grooved edges
US3941055A (en) * 1972-02-16 1976-03-02 Wilhelm Barenschee Carrier for flexible printing plates
DE2606223A1 (de) * 1976-02-17 1977-08-18 Maschf Augsburg Nuernberg Ag Vorrichtung zum spannen des gummituches einer offsetdruckmaschine
JPS5579157A (en) * 1978-12-12 1980-06-14 Tokyo Kikai Seisakusho:Kk Reversible rotating and clamping apparatus for thin- sheet-shaped printing plate in rotary printing mill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006002330A1 (de) * 2006-01-18 2007-07-19 Koenig & Bauer Aktiengesellschaft Plattenspannvorrichtung für den Plattenzylinder einer Druckmaschine

Also Published As

Publication number Publication date
US4641576A (en) 1987-02-10
DE3416187A1 (de) 1985-11-07
DE3567599D1 (en) 1989-02-23
WO1985005075A1 (fr) 1985-11-21
JPS62500848A (ja) 1987-04-09
EP0179148A1 (fr) 1986-04-30

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