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EP0755785B1 - Dispositif de fixation d'une plaque avec réduction de la zône sans pression - Google Patents

Dispositif de fixation d'une plaque avec réduction de la zône sans pression Download PDF

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Publication number
EP0755785B1
EP0755785B1 EP96111368A EP96111368A EP0755785B1 EP 0755785 B1 EP0755785 B1 EP 0755785B1 EP 96111368 A EP96111368 A EP 96111368A EP 96111368 A EP96111368 A EP 96111368A EP 0755785 B1 EP0755785 B1 EP 0755785B1
Authority
EP
European Patent Office
Prior art keywords
printing
printing forme
printing form
cylinder
edge
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
EP96111368A
Other languages
German (de)
English (en)
Other versions
EP0755785A1 (fr
Inventor
Jacques Métrope
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
Goss International Montataire SA
Original Assignee
Heidelberger Druckmaschinen AG
Heidelberg Harris SA
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, Heidelberg Harris SA filed Critical Heidelberger Druckmaschinen AG
Publication of EP0755785A1 publication Critical patent/EP0755785A1/fr
Application granted granted Critical
Publication of EP0755785B1 publication Critical patent/EP0755785B1/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
    • B41F27/1243—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 pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • the invention relates to a plate clamping device to reduce the pressure-free area around the circumference of a Printing form cylinder in the printing unit one Rotary printing press.
  • EP 0 585 625 A1 relates to a device for fastening a flexible pressure plate.
  • the two at the slot have adjacent legs, with one leg extended is and the bends of the pressure plate clamps.
  • EP 0 531 741 A1 relates to a Plate front edge attachment of a pressure plate Printing machines.
  • a clamping device has two at right angles flat clamping surfaces running to the cylinder radius, the an attachment of the printing plate leading edge without essential Allow deformation. This is achieved in that the Radius of the lateral surface of the plate cylinder in the area of Insertion opening for inserting the pressure plate is smaller than the cylinder radius, and that the cylinder radius at least is so large that by clamping a commercially available Pressure plate no permanent deformation of the same occur can.
  • EP 0 592 856 A1 describes a clamping device for Attach a printing form on the surface of a Cylinders became known.
  • a jig is supposed to to be manufactured with little effort, a quick clamping with Allow little effort and the printing form as possible low stress, so that their multiple use is possible.
  • One in the canal A tension shaft arranged in a cylinder is a resilient element with two legs attached, whereby in the pretensioned state, seen in the direction of rotation of the cylinder, trailing first leg protrudes freely into the channel and the other leg the first Leg protrudes in the radial direction.
  • trailing end of the printing form which is bent at an obtuse angle abuts an axially leading edge, which is part of the trailing side surface of the Channel is.
  • This collecting device is particularly useful for Web rotary printing presses.
  • EP 0 453 794 A1 relates to a method and a device for fastening a pressure plate on a cylinder with a narrow channel.
  • a printing plate with an elongated End part is received in a narrow channel of a cylinder and on one curved side wall of the channel by a filled with resilient material Clamp held.
  • the clamp pushes the extended end part of the pressure plate against the side wall in a direction normal to the side wall to the Reduce longitudinal stress on the end part.
  • the front edge of the printing form is on attached to the opposite side of the channel.
  • FR-A-1 265 837 discloses an attachment device for engraved printing plates, especially engraved gravure plates.
  • the gravure plate in the clamping channel receiving cylinder, a locking element is provided, in which the front edge the gravure plate is locked.
  • the rear edge of the rotogravure plate is with an insert proven, the front edge of which engages in a rotatable crossbar.
  • the present invention is based on the object for fastening the end parts of a printing form on a Printing form cylinder necessary clamping channel and thus the non-printing area on the peripheral surface of the To minimize printing form cylinders.
  • the solution according to the invention can be used in a simple manner achieved that a printing form edge during the Clamping process, caused by a projection in one Sidewall of the canal, in the tangential direction on it opposite printing form edge is pulled. Because on this way, the span width can be reduced consequently the unprinted zone in the print.
  • the side wall of the channel with the projection bevelled is the side wall of the channel with the projection bevelled.
  • the exciting printing form touches the projection linearly, so that the tangential Tractive force evenly across the width of the cylinder Printing form is initiated.
  • the Projection over the entire width of the printing form; in the area of the projection can the side wall of the channel with a hardened coating.
  • the clamping element which is the printing form edge to be clamped touches linearly, is resilient in a twistable Traverse in the lower part of the channel of the printing form cylinder let in. In the exciting state of the printing plate edge can the clamping element resiliently to the printing form edge be employed and locked in this position.
  • Fig. 1 shows a greatly enlarged section the channel of a printing form cylinder.
  • a printing couple cylinder 1 - here the printing form cylinder - comprises a channel 2, which is axially parallel to the axis of rotation of the Printing form cylinder extends.
  • the ends of a printing form 3, that is, the printing form leading edge 4 and the Printing form trailing edge 5, are hung in the channel 2.
  • the printing form leading edge 4 lies on a front Side wall 8 of the channel 2, while the Printing form trailing edge 5 in the tensioned state - reproduced through position 5.5 - on the rear side wall 9 of the Channel 2 is present.
  • the Printing form trailing edge 5 successively according to Insertion positions 5.1, 5.2 and 5.3 in position 5.4 emotional.
  • the envelope that the printing form trailing edge 5 during describes the insertion process is with reference numeral 6 designated.
  • one of the side walls 8, 9 of the channel 2 a Has recess 10, below which a projection 11th is shown. Both the recess 10 and the Projection 11 extend across the entire width of the Printing forme cylinder 1.
  • the side wall 9 of the channel 2 can Area of the projection 11 by means of a known Hardening process to be hardened to prevent wear. It is also conceivable to have one in the side wall 9 of the channel 2 Groin or similar, parallel to the axis of rotation of the cylinder 1 extending body made of wear-resistant To provide material having a projection 11 as shown in FIG. 1st having.
  • clamping element 7 which of a provisional Clamping position 7.1 in a clamping position 7.2 and vice versa is movable.
  • the printing form leading edge 4 fixed.
  • the leading edge 4 of the printing form is secured.
  • the printing form leading edge 4 by the provisional Clamping position 7.1 held. If the clamping element 7 in the Position 7.2 - the clamping position - set, it happens a linear contact on the Contact point between the clamping element 7 and the Printing form trailing edge 5.
  • Fig. 2 shows a larger section of the end face of a printing form cylinder.
  • the printing form leading edge 4 and the printing form trailing edge 5 are shown reduced, as is the representation of the clamping element 7 in its positions 7.1 and 7.2.
  • the clamping element 7 - be it a continuous component or several individual tongues - is received in a cross member 12, which is rotatable in a bore 13 in the printing form cylinder 1.
  • the cross member 12 is provided with a lever 14 which can be pivoted via an actuator 17 - for example a pneumatic cylinder.
  • an actuator 17 for example a pneumatic cylinder.
  • a bolt 16 is provided which extends through both the lever 14 and a fork 15, the fork 15 being adjustable by the actuator 17.
  • the actuator 17 itself can be received in a rotatable abutment 18 on an end face of the printing form cylinder 1; an arrangement on both end faces of the printing form cylinder 1 would also be conceivable.
  • the actuator 17 in the example shown here is a pneumatic cylinder, the chambers of which are acted upon by a pressure medium via connections 19.
  • An electric motor or a hydraulic cylinder or the like could also be used to actuate the crossmember 12.
  • Fig. 2 denote by the solid lines positions of components 17, 15, 16, 14 and 7 shown the clamping position 7.2 of the printing form trailing edge 5 by the Clamping element 7, while that with dashed lines positions of components 17, 15, 16, 14 and 7 shown the provisional clamping position 7.1 of the Corresponding printing plate leading edge 4 through the clamping element 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Arc Welding In General (AREA)

Claims (8)

  1. Dispositif pour la fixation de plaques d'impression (3) sur la périphérie d'un cylindre porte-plaque (1), dans lequel le bord avant (4) de la plaque d'impression et le bord arrière (5) de la plaque d'impression sont logés dans un canal (2), s'appliquent contre les parois latérales (8, 9) du canal (2) lorsque la plaque d'impression (3) est à l'état tendu, et une traverse pivotante (12) est logée dans le canal (2), traverse à laquelle est fixé un élément de tension (7), qui agit sur l'un des bords (4, 5) de la plaque d'impression (3), tandis que sur les parois latérales (8, 9) du canal (2) est formé un appendice saillant (11) qui s'étend sur toute la largeur du cylindre porte-plaque (1), et que le bord arrière (5) de la plaque d'impression se déplace sur la périphérie du cylindre porte-plaque (1) en direction du bord avant (4) de la plaque d'impression, caractérisé en ce que le bord arrière (5) de la plaque d'impression peut être serré sur le cylindre porte-plaque dans une direction tangentielle pendant l'opération de mise en tension, par l'intermédiaire de l'élément de tension (7), qui s'applique contre ce bord et au moyen duquel le bord avant (4) de la plaque d'impression est également protégé.
  2. Dispositif pour la fixation de plaques d'impression selon la revendication 1, caractérisé en ce que la paroi latérale (9), qui comporte l'appendice saillant (11), du canal est équipée d'un biseau (10).
  3. Dispositif pour la fixation de plaques d'impression selon la revendication 1, caractérisé en ce que l'élément de tension (7) s'applique selon un contact linéaire sur le bord (5) de la plaque d'impression.
  4. Dispositif pour la fixation de plaques d'impression selon la revendication 1, caractérisé en ce que l'appendice saillant (11) dans la paroi latérale (9) du canal (2) est trempé.
  5. Dispositif pour la fixation de plaques d'impression selon la revendication 1, caractérisé en ce que l'appendice saillant (11) est formé sur un élément en forme de barre qui est formé sur la paroi latérale (9) du canal (2) et s'étend axialement sur la largeur du cylindre porte-plaques (1).
  6. Dispositif pour la fixation de plaques d'impression selon la revendication 1, caractérisé en ce que l'élément de tension (7) est inséré élastiquement dans une traverse pouvant être actionnée (12).
  7. Dispositif pour la fixation de plaques d'impression selon la revendication 1, caractérisé en ce que l'élément de tension (7) s'applique élastiquement contre le bord (5) de la plaque d'impression, dans l'état (7.2) dans lequel la plaque d'impression (3) est tendue, et est bloqué dans cette position.
  8. Dispositif pour la fixation de plaques d'impression selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que pendant le montage ou le démontage de la plaque d'impression (3), l'élément de tension (7) maintient le bord avant (4) de la plaque d'impression dans une position provisoire de tension (7.1) dans le canal (2) du cylindre porte-plaque (1).
EP96111368A 1995-07-25 1996-07-15 Dispositif de fixation d'une plaque avec réduction de la zône sans pression Expired - Lifetime EP0755785B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9509001 1995-07-25
FR9509001A FR2737149B1 (fr) 1995-07-25 1995-07-25 Dispositif de fixation d'une plaque d'impression sur un cylindre porte-plaque

Publications (2)

Publication Number Publication Date
EP0755785A1 EP0755785A1 (fr) 1997-01-29
EP0755785B1 true EP0755785B1 (fr) 2001-04-04

Family

ID=9481341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111368A Expired - Lifetime EP0755785B1 (fr) 1995-07-25 1996-07-15 Dispositif de fixation d'une plaque avec réduction de la zône sans pression

Country Status (5)

Country Link
US (1) US5778786A (fr)
EP (1) EP0755785B1 (fr)
AT (1) ATE200249T1 (fr)
DE (2) DE19619941A1 (fr)
FR (1) FR2737149B1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058996C1 (de) 2000-11-28 2002-06-13 Koenig & Bauer Ag Vorrichtung zur Befestigung eines Aufzuges
DE10060984B4 (de) * 2000-12-08 2006-10-26 Man Roland Druckmaschinen Ag Vorichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE10208262A1 (de) * 2002-02-26 2003-09-04 Roland Man Druckmasch Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE10218475B4 (de) * 2002-04-25 2006-06-29 Koenig & Bauer Ag Zylinder einer Rotationsdruckmaschine mit einem Aufzug
DE10261954B4 (de) * 2002-04-25 2006-08-03 Koenig & Bauer Ag Zylinder einer Rotationsdruckmaschine
DE10250684B3 (de) * 2002-10-31 2004-04-01 Koenig & Bauer Ag Verfahren zur Herstellung eines Rotationskörpers und Rotationskörper einer Druckmaschine
FR2898297B1 (fr) * 2006-03-08 2010-03-12 Goss Int Montataire Sa Cylindre de plaque et presse rotative correspondante.
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 (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125023A (en) * 1964-03-17 Blanket tensioning means for the impression
US948157A (en) * 1909-05-13 1910-02-01 Alexander Bevan Surfacing-roll.
US2900904A (en) * 1953-06-08 1959-08-25 Hantscho George Printing press rollers
US2837025A (en) * 1956-05-08 1958-06-03 American Can Co Clamping and tensioning device
FR1265837A (fr) * 1959-10-29 1961-07-07 Goebel Gmbh Maschf Dispositif de fixation de plaques gravées flexibles, notamment de plaques pour impression taille-douce sur acier
DE1228627B (de) * 1964-04-25 1966-11-17 Roland Offsetmaschf Vorrichtung zum Befestigen einer biegsamen Druckplatte auf dem Formzylinder einer Rotationsdruckmaschine
US3362327A (en) * 1965-01-28 1968-01-09 Cottrell Company Cylinder lockup for wrap-around plates and blankets
DE4005093C1 (en) * 1990-02-17 1991-06-20 Man Roland Druckmaschinen Ag, 6050 Offenbach, De Forme clamp for printing cylinder - has channel in cylinder with spindle to clamp form eccentrically
CA2038809C (fr) * 1990-04-24 1998-12-08 Albert Gevis Methode et appareil de montage de plaque d'impression a gorge etroite
DE4129046A1 (de) * 1991-08-31 1993-03-11 Heidelberger Druckmasch Ag Plattenvorderkantenbefestigung einer druckplatte an druckmaschinen
DE4225949C2 (de) * 1992-08-06 1994-10-13 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE4234332A1 (de) * 1992-10-12 1994-04-14 Heidelberger Druckmasch Ag Aufspannvorrichtung zum Befestigen einer biegsamen Druckform auf der Mantelfläche eines Zylinders
DE4335140C1 (de) * 1993-10-15 1995-02-02 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte

Also Published As

Publication number Publication date
DE19619941A1 (de) 1997-01-30
FR2737149B1 (fr) 1997-10-17
EP0755785A1 (fr) 1997-01-29
ATE200249T1 (de) 2001-04-15
FR2737149A1 (fr) 1997-01-31
US5778786A (en) 1998-07-14
DE59606691D1 (de) 2001-05-10

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