EP0713770A1 - Dispositif pour fixer une plaque d'impression flexible - Google Patents

Dispositif pour fixer une plaque d'impression flexible Download PDF

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Publication number
EP0713770A1
EP0713770A1 EP95115212A EP95115212A EP0713770A1 EP 0713770 A1 EP0713770 A1 EP 0713770A1 EP 95115212 A EP95115212 A EP 95115212A EP 95115212 A EP95115212 A EP 95115212A EP 0713770 A1 EP0713770 A1 EP 0713770A1
Authority
EP
European Patent Office
Prior art keywords
tensioning
leaf
tubular support
printing form
shaped
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
EP95115212A
Other languages
German (de)
English (en)
Other versions
EP0713770B1 (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
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 EP0713770A1 publication Critical patent/EP0713770A1/fr
Application granted granted Critical
Publication of EP0713770B1 publication Critical patent/EP0713770B1/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 device for fastening a flexible printing form on the printing form cylinder of a printing press with at least one slot running in the axial direction, in which at least one sheet-shaped element, which ends with a curve and fixes a fold of a flexible printing form, is stored.
  • a fastening device for a flexible pressure plate is already known from document EP-A-0585625. Both ends of this pressure plate are fixed between a side wall of a slot and an elongated leg of a leaf spring.
  • the leaf spring is held in the slot of the pressure cylinder by a U-shaped design and has a pit-shaped depression in the upper region of the elongated leg.
  • a relief on the fold of the plate penetrates into the depression located below the rounding of the elongated leg. In addition to a frictional fixation of the pressure plate, this results in a positive connection of a pressure plate bend to the leaf spring arrangement.
  • each leaf-shaped element is a tensioning element which is received in a tubular support receiving an actuating element deforming each tensioning element.
  • the actuating member deforming the tensioning elements can be designed as a diaphragm body that can be pressurized with pressure medium.
  • the actuating member is a mechanical actuating means, such as an actuating shaft with a flat surface.
  • the tubular support which receives it is in one Axial bore of the printing form cylinder is rotatably arranged.
  • the tubular support also includes a number of pairs of recesses corresponding to the number of clamping elements to be accommodated, which extend in the axial direction parallel to the axis of rotation of the printing form cylinder.
  • the recesses are arranged opposite one another in the tubular carrier.
  • Each leaf-shaped tensioning element has an abutment which engages in the tensioning channel extension. In the "tensioning" state, each leaf-shaped tensioning element lies both on a boundary of the tensioning channel extension and on a boundary of the upper recess assigned to the tensioning channel.
  • the pair of recesses align with both the tensioning channel and the tensioning channel extension so that each sheet-like tensioning element can be removed in the direction of removal.
  • both individual clamping elements that can be brought next to one another in the axial direction and a single radially extending clamping element provided with axial cutouts are conceivable.
  • FIG. 1 is a schematic perspective view of a printing form cylinder in the "clamp" state.
  • Figure 2 is a schematic cross section of the tubular support in the "clamp" state.
  • FIG. 3 is a schematic perspective view of a printing form cylinder in the “printing form release” state.
  • FIG. 4 is a schematic cross section of the tubular support with the membrane acted upon in the “printing form release” state.
  • FIG. 5 is a schematic cross section of the tubular support in the axial bore in the printing form cylinder with the rear printing form edge released and the tensioned leading edge.
  • FIG. 6 is a schematic cross section of a tubular support rotated in the removal position, so that each sheet-like clamping element can be removed radially.
  • FIGS 7, 8 and 9 represent different ones Embodiments of tensioning elements, which have different elastic properties.
  • FIG. 1 shows a printing form cylinder 1, on the peripheral surface of which a printing form 4 rests, the front and rear edges 5, 6 of which are received by a clamping channel 7.
  • the printing form cylinder 1 rotates about an axis of rotation 2 in the direction of the arrow 3.
  • the printing form cylinder 1 has an axial bore in which a tubular support is mounted, which extends along an axis 8 across the width of the cylinder.
  • recesses 12 opposite one another are embodied in the circumferential surface of the tubular support 11, into which leaf-shaped tensioning elements 13 such as leaf springs engage.
  • the sheet-like tensioning elements 13 have at their lower end a barb 15 formed by bending the lower edge and at their upper end a hook 14 tensioning the printing form.
  • the section lying between the hook 14 and the barb 15 of each leaf-shaped tensioning element is located opposite an actuating member 17.
  • This can be implemented, for example, as a pressurizable membrane 17 or as a mechanical means such as a rotatable actuating shaft flattened on one side. This actuator is advantageously remotely controllable.
  • the front edge 5 of the printing form 4 in the clamping channel 7 is against one of its The angled rear edge 6 of the printing form 4 is gripped by the hook 14 of the sheet-like clamping element.
  • the tensioning channel 7 has a tensioning channel extension 16.
  • the recesses 12 of the tubular support 11 lie opposite one another and are penetrated by each leaf-shaped clamping element 13.
  • the leaf-shaped clamping element 13 is fixed with its lower barb 15 in the clamping channel extension 16 and acts above its curvature on the edge of the upper recess 12 in the tubular support 11.
  • the actuating member used here is relieved of pressure, so that the clamping force is applied by the inherent rigidity of the leaf-shaped clamping element 13 and is maintained.
  • FIG. 3 It can be seen in FIG. 3 that the rear edge 6, freed from the sheet-like tensioning element 13, lies above the surface of the cylinder 1. As FIG. 3 clearly shows, the curvature of the main part of the leaf-shaped tensioning elements 13 is completely eliminated by acting on the actuating member 17 used here. As can be seen in particular from FIG. 4, in this state of release of the printing form trailing edge 6, the actuating member 17 used here is pressurized. Compressed air can be used as the pressure medium 22.
  • the Actuator 17 brings about an elongated position of the leaf-shaped tensioning element 13, although this remains fixed in the tensioning channel extension 13, but moves in the upper of the recesses 12 until it bears against the side wall 9 of the tensioning channel 7.
  • FIG. 5 shows the rear end 6 of the printing form 4 protruding from the surface of the printing form cylinder 1.
  • the deformable membrane-shaped actuating element 17 shown here is relieved of pressure.
  • the hook 14 of the clamping element 13 clamps the front edge 5 of the printing form 4 against the side wall 9 of the clamping channel 7 because of the inherent rigidity of the sheet-shaped clamping element 13.
  • the printing form 4 can be slowly removed from the surface of the printing form cylinder 1 and be inserted into an automatic or semi-automatic plate changing device.
  • the front edge 5 of the printing form 4 remains permanently clamped, since the sheet-like clamping element 13 is not subjected to any deformation and remains fixed in the clamping channel extension 17 by its barb 15.
  • FIGS 7, 8 and 9 represent different possible design standards for tensioning elements.
  • continuous sheet-shaped clamping elements 20 or 21 can also be provided. These are provided both with a hook-shaped end 14 for fixing the rear edge 6 of a printing form 4 and with a barb 15. They can be provided with as well as without cut-outs in the axial direction, depending on the required spring or clamping characteristics. It is obvious that the choice of material can also influence the spring characteristics.
  • the level of the forces to be exerted by the actuator 17 depends in each case on the clamping elements used.
  • a pivotable actuating shaft with a flattening on one side in order to cause the deformation of the tensioning elements 13, 20 and 21.
  • each clamping element is elastically deformed by the actuating member with the aim of holding the flexible printing form on the printing form cylinder during normal operation of the machine and that both the clamping and the unclamping of the flexible printing form is achieved by the release of each clamping element, whereby it finds its original shape and inherent rigidity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Electroluminescent Light Sources (AREA)
EP95115212A 1994-11-24 1995-09-27 Dispositif pour fixer une plaque d'impression flexible Expired - Lifetime EP0713770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9414093 1994-11-24
FR9414093A FR2727350B1 (fr) 1994-11-24 1994-11-24 Dispositif de fixation d'une forme d'impression souple

Publications (2)

Publication Number Publication Date
EP0713770A1 true EP0713770A1 (fr) 1996-05-29
EP0713770B1 EP0713770B1 (fr) 1998-05-20

Family

ID=9469115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115212A Expired - Lifetime EP0713770B1 (fr) 1994-11-24 1995-09-27 Dispositif pour fixer une plaque d'impression flexible

Country Status (6)

Country Link
US (1) US5738012A (fr)
EP (1) EP0713770B1 (fr)
JP (1) JPH08230157A (fr)
CN (1) CN1130568A (fr)
DE (1) DE59502239D1 (fr)
FR (1) FR2727350B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073075A2 (fr) * 1999-05-29 2000-12-07 Koenig & Bauer Aktiengesellschaft Dispositif pour fixer une plaque souple
EP1071558A4 (fr) * 1998-02-17 2001-07-11 Goss Graphic Syst Inc Dispositif servant a retenir une plaque au moyen d'une lame-ressort
WO2002043962A3 (fr) * 2000-11-28 2002-12-05 Koenig & Bauer Ag Dispositif pour fixer un habillage et procede de production
DE102005002684A1 (de) * 2005-01-20 2006-08-03 Man Roland Druckmaschinen Ag Plattenzylinder mit einer Vorrichtung zur Festlegung von umfangseitig anbringbaren Druckplatten
DE102007002029B3 (de) * 2007-01-13 2008-04-10 Koenig & Bauer Aktiengesellschaft Zylinder einer Rollenrotationsdruckmaschine mit einer Vorrichtung zum Befestigen eines biegsamen Aufzugs

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19924787B4 (de) * 1999-05-29 2004-11-04 Koenig & Bauer Ag Vorrichtung zum Befestigen biegsamer Platten
DE10015165B4 (de) * 2000-03-27 2004-01-29 Koenig & Bauer Ag Vorrichtung zur Zuführung von Druckmittel
DE10236867B3 (de) * 2002-08-12 2004-03-25 Koenig & Bauer Ag Vorrichtung zum Halten mindestens eines Aufzugs auf einem Zylinder einer Rotationsdruckmaschine
US6705226B1 (en) 2002-08-29 2004-03-16 Agfa Corporation Media clamping apparatus and method for an external drum imaging system
DE10250684B3 (de) * 2002-10-31 2004-04-01 Koenig & Bauer Ag Verfahren zur Herstellung eines Rotationskörpers und Rotationskörper einer Druckmaschine
DE102004020694A1 (de) * 2004-04-28 2005-11-24 Heidelberger Druckmaschinen Ag Vorrichtung zum Klemmen und Halten einer Druckplatte auf einer Druckplatte auf einer Belichtungstrommel
US6994027B1 (en) * 2005-03-03 2006-02-07 Agfa Corporation Device and method to prevent movement of a printing plate during clamping
DE102007024426A1 (de) * 2007-05-25 2008-12-04 Maschinenfabrik Wifag Spanneinrichtung für Druckformen
US9113845B2 (en) * 2009-01-08 2015-08-25 Given Imaging Ltd. Device and method for assembling in vivo sensing devices
CN105015147A (zh) * 2015-07-14 2015-11-04 孙光英 一种印刷辊筒

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2146887A5 (fr) * 1971-07-22 1973-03-02 North American Rockwell
EP0585625A1 (fr) 1992-08-06 1994-03-09 MAN Roland Druckmaschinen AG Dispositif de fixation de plaques d'impression flexibles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433045A1 (de) * 1984-09-08 1986-03-20 Basf Ag, 6700 Ludwigshafen Lichthaertbare verschlussmasse, insbesondere zum verschliessen des spaltes zwischen den enden von auf formzylinder aufgespannten tiefdruckplatten
DE3731039A1 (de) * 1987-09-16 1989-03-30 Koenig & Bauer Ag Einrichtung zum klemmen biegsamer druckplatten auf dem plattenzylinder einer rotationsdruckmaschine
DE4326250C2 (de) * 1993-08-05 1996-05-15 Koenig & Bauer Albert Ag Spannvorrichtung in einer Rotationsdruckmaschine
FR2709168B1 (fr) * 1993-08-20 1995-11-10 Heidelberg Harris Sa Dispositif de liaison fluidique temporaire entre une source de fluide sous pression et un organe utilisateur.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2146887A5 (fr) * 1971-07-22 1973-03-02 North American Rockwell
EP0585625A1 (fr) 1992-08-06 1994-03-09 MAN Roland Druckmaschinen AG Dispositif de fixation de plaques d'impression flexibles

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1071558A4 (fr) * 1998-02-17 2001-07-11 Goss Graphic Syst Inc Dispositif servant a retenir une plaque au moyen d'une lame-ressort
WO2000073075A2 (fr) * 1999-05-29 2000-12-07 Koenig & Bauer Aktiengesellschaft Dispositif pour fixer une plaque souple
WO2000073075A3 (fr) * 1999-05-29 2002-10-17 Koenig & Bauer Ag Dispositif pour fixer une plaque souple
EP1340617A2 (fr) 1999-05-29 2003-09-03 Koenig & Bauer Aktiengesellschaft Dispositif de fixation d'une plaque d'impression flexible
EP1340617A3 (fr) * 1999-05-29 2004-02-04 Koenig & Bauer Aktiengesellschaft Dispositif de fixation d'une plaque d'impression flexible
DE19924786B4 (de) * 1999-05-29 2004-11-04 Koenig & Bauer Ag Vorrichtung zum Befestigen einer biegsamen Platte auf einem Zylinder einer Rotationsdruckmaschine
WO2002043962A3 (fr) * 2000-11-28 2002-12-05 Koenig & Bauer Ag Dispositif pour fixer un habillage et procede de production
US6862991B2 (en) 2000-11-28 2005-03-08 Koenig & Bauer Ajtuebgesekkscgaft Cylinder and device for securing a flexible packing on the cylinder
DE102005002684A1 (de) * 2005-01-20 2006-08-03 Man Roland Druckmaschinen Ag Plattenzylinder mit einer Vorrichtung zur Festlegung von umfangseitig anbringbaren Druckplatten
US7487725B2 (en) 2005-01-20 2009-02-10 Man Roland Druckmaschinen Ag Method and apparatus for securing a printing plate on a plate cylinder
DE102007002029B3 (de) * 2007-01-13 2008-04-10 Koenig & Bauer Aktiengesellschaft Zylinder einer Rollenrotationsdruckmaschine mit einer Vorrichtung zum Befestigen eines biegsamen Aufzugs

Also Published As

Publication number Publication date
FR2727350A1 (fr) 1996-05-31
FR2727350B1 (fr) 1997-02-14
US5738012A (en) 1998-04-14
EP0713770B1 (fr) 1998-05-20
CN1130568A (zh) 1996-09-11
JPH08230157A (ja) 1996-09-10
DE59502239D1 (de) 1998-06-25

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