EP0732203A1 - Dispositif tendeur - Google Patents

Dispositif tendeur Download PDF

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Publication number
EP0732203A1
EP0732203A1 EP96103837A EP96103837A EP0732203A1 EP 0732203 A1 EP0732203 A1 EP 0732203A1 EP 96103837 A EP96103837 A EP 96103837A EP 96103837 A EP96103837 A EP 96103837A EP 0732203 A1 EP0732203 A1 EP 0732203A1
Authority
EP
European Patent Office
Prior art keywords
plate
tines
clamping device
clamping
spindle
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
EP96103837A
Other languages
German (de)
English (en)
Other versions
EP0732203B1 (fr
Inventor
Heinz-Walter Reutter
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 EP0732203A1 publication Critical patent/EP0732203A1/fr
Application granted granted Critical
Publication of EP0732203B1 publication Critical patent/EP0732203B1/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 tensioning device for tensioning and a method for releasing flexible plates on or from a cylinder of a rotary printing press according to the preamble of claim 1.
  • DE 35 38 308 C2 shows a device for mounting a blanket on a blanket cylinder of a rotary printing press.
  • the blanket cylinder has an axially parallel slot in which bent ends of a carrier plate of a blanket are inserted. These ends are provided with recesses which engage in the cams of a clamping lever. This clamping lever is pivoted and fixed by means of a twisting device attached to the front of the blanket cylinder.
  • a disadvantage of this device is that the tensioning lever can twist. This can lead to uneven tensioning of the carrier plate.
  • the invention has for its object to provide a clamping device for clamping flexible, bevelled ends with plates on a slotted cylinder of a rotary printing press.
  • the advantages that can be achieved with the invention are, in particular, that inaccuracies, for. B. the bend of the plate, the perforations of the folded ends or a non-parallel mounting of the tensioning lever with respect to the folded ends of the plate can be compensated.
  • An occurring torsion of the tensioning lever can also be compensated for by the device according to the invention.
  • the uniform tension of the plate along the width avoids overstressing individual plate parts and thus increases the operational reliability of the rotary printing press.
  • the device according to the invention can also advantageously be used to detach the plate from the cylinder, the device serving as a lifter acting on an end face of one leg of the plate.
  • the tensioning device according to the invention and the method for releasing a plate are shown in the drawing and are 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 slot 8 extending parallel to an axis of rotation and extending from a lateral surface 7 of the cylinder 1 into its interior 6.
  • a leg 9 of the trailing, beveled end 4 of the plate 2 is with a number of z. B. rectangular perforations 11.
  • At the end 13 of the slot 8 is one parallel to the slot 8 extending bore 14 is mounted in the cylinder 1.
  • the slot 8 tangent to the bore 14 in the form of a chord, so that the bore 14 is connected to the slot 8.
  • a clamping lever 16, for. B. a spindle 16 pivotally mounted.
  • This spindle 16 has a groove 18 running parallel to a pivot axis 17 of the spindle 16.
  • This groove 18 narrows starting from a lateral surface 19 of the spindle 16 toward an interior of the spindle 16.
  • the part of the groove 18 pointing outwards has a V-shaped cross section, which is followed by a narrow U-shaped slot.
  • a comb-like bar 22 provided with prongs 21 is fastened in the inner, U-shaped slot of the groove 18. These tines 21 are individually spring-mounted in the circumferential direction of the spindle 16 with respect to the bar 22 clamped as a cantilever arm.
  • the strip 22 with the prongs 21 is designed in the present example as a comb-like leaf spring which is arranged pivotably by means of the spindle 16.
  • the perforations 11 of the trailing end 4 of the plate 2 and the prongs 21 are adapted to one another.
  • both folded ends 3, 4 of the plate 2 are inserted into the slot 8 of the cylinder 1.
  • the spindle 16 is in a rest position in which the tines 21 do not protrude into the area of the slot 8, which is necessary for inserting the bent ends 3, 4 of the plate 2, ie the tines 21 are in the Area of the widened end 13 of the slot 8.
  • the spindle 16 is pivoted clockwise into its operating position.
  • the prongs 21 each engage with their lower sides 23 in the perforations 11 of the trailing end 4 of the plate 2 and pull the end 4 into the slot 8.
  • the prongs 21 bend and thus tension the plate 2 by the spring force generated Spindle 16 is in its operating position by means not shown, for. B. locked by a locking pin.
  • the spindle 16 To release the plate 2 from the cylinder 1, the spindle 16 is rotated clockwise beyond its operating position. The tines 21 bend further in the radial direction and finally slide out of the perforations 11 of the plate 2. The tines 21 spring into their undeformed position, in which the lower side 23 of the tines 21 rest against a support surface 24 of the groove 18. In this extended position, a length l21 of the tines 21 is dimensioned in the radial direction such that the tines 21 extend beyond an end face 27 of the leg 9 of the trailing end 4 of the plate 2. By turning the spindle 16 in the opposite direction, an upper side 26 of the prongs 21 is brought to bear against the end face 27 of the leg 9 of the trailing end 4 of the plate 2. Thus, by further turning the spindle 16, the trailing end 4 of the plate 2 is released from the cylinder 1 and the leg 9 from the slot 8 pushed out. The tines 21 thus also have a lifting function.
  • pivotable clamping levers 16 can also be used, for. B. a bar with z. B. individually sprung tines 21 can be used.
  • a plurality of clamping levers can be arranged on a cylinder 1, for example one clamping lever for each plate.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP96103837A 1995-03-16 1996-03-12 Dispositif tendeur Expired - Lifetime EP0732203B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509559 1995-03-16
DE19509559A DE19509559C2 (de) 1995-03-16 1995-03-16 Spannvorrichtung

Publications (2)

Publication Number Publication Date
EP0732203A1 true EP0732203A1 (fr) 1996-09-18
EP0732203B1 EP0732203B1 (fr) 1998-09-16

Family

ID=7756853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103837A Expired - Lifetime EP0732203B1 (fr) 1995-03-16 1996-03-12 Dispositif tendeur

Country Status (4)

Country Link
US (1) US5692443A (fr)
EP (1) EP0732203B1 (fr)
JP (1) JP2956026B2 (fr)
DE (2) DE19509559C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998016388A1 (fr) * 1996-10-12 1998-04-23 Koenig & Bauer Aktiengesellschaft Dispositif pour enlever des plaques
EP1170124A1 (fr) * 2000-07-06 2002-01-09 Tokyo Kikai Seisakusho Ltd. Dispositif pour tendre un revêtement sur un cylindre d'une machine à imprimer

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19841912A1 (de) * 1998-09-14 2000-03-16 Roland Man Druckmasch Vorrichtung zum Befestigen von biegsamen Druckformen
US6131513A (en) * 1998-10-23 2000-10-17 Heidelberger Druckmaschinen Ag Printing press with simple lock-up plate cylinder
DE10060171C1 (de) * 2000-12-04 2002-05-23 Koenig & Bauer Ag Vorrichtung zum Befestigen eines Aufzuges auf einem Zylinder
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
EP2193927A1 (fr) * 2003-11-10 2010-06-09 Day International, Inc. Blanchet d'impression et son procédé de formation
DE10360012A1 (de) * 2003-12-19 2005-07-28 Man Roland Druckmaschinen Ag Gummituchplatte zum Aufspannen auf einen Zylinder
DE102007002029B3 (de) * 2007-01-13 2008-04-10 Koenig & Bauer Aktiengesellschaft Zylinder einer Rollenrotationsdruckmaschine mit einer Vorrichtung zum Befestigen eines biegsamen Aufzugs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157621A (en) * 1938-03-29 1939-05-09 Meisel Press Mfg Company Printing cylinder
DE3538308C2 (de) 1984-11-16 1994-02-24 Wifag Maschf Vorrichtung zum Aufziehen eines Gummituches auf einen Gummituchzylinder einer Rotationsdruckmaschine
DE29503439U1 (de) * 1994-05-04 1995-04-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer biegsamen Druckplatte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157621A (en) * 1938-03-29 1939-05-09 Meisel Press Mfg Company Printing cylinder
DE3538308C2 (de) 1984-11-16 1994-02-24 Wifag Maschf Vorrichtung zum Aufziehen eines Gummituches auf einen Gummituchzylinder einer Rotationsdruckmaschine
DE29503439U1 (de) * 1994-05-04 1995-04-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer biegsamen Druckplatte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998016388A1 (fr) * 1996-10-12 1998-04-23 Koenig & Bauer Aktiengesellschaft Dispositif pour enlever des plaques
US6101942A (en) * 1996-10-12 2000-08-15 Koenig & Bauer Aktiengesellschaft Plate removing device including a rotatable spindle carrying biased clamping elements
EP1170124A1 (fr) * 2000-07-06 2002-01-09 Tokyo Kikai Seisakusho Ltd. Dispositif pour tendre un revêtement sur un cylindre d'une machine à imprimer

Also Published As

Publication number Publication date
DE19509559A1 (de) 1996-09-19
US5692443A (en) 1997-12-02
DE19509559C2 (de) 1997-01-23
DE59600552D1 (de) 1998-10-22
JP2956026B2 (ja) 1999-10-04
EP0732203B1 (fr) 1998-09-16
JPH08267715A (ja) 1996-10-15

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