EP0246977A1 - Auf einem Trägerzylinder in einer Rotationsdruckmaschine befestigte flexible Druckplatte - Google Patents

Auf einem Trägerzylinder in einer Rotationsdruckmaschine befestigte flexible Druckplatte Download PDF

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Publication number
EP0246977A1
EP0246977A1 EP87401147A EP87401147A EP0246977A1 EP 0246977 A1 EP0246977 A1 EP 0246977A1 EP 87401147 A EP87401147 A EP 87401147A EP 87401147 A EP87401147 A EP 87401147A EP 0246977 A1 EP0246977 A1 EP 0246977A1
Authority
EP
European Patent Office
Prior art keywords
plate
slot
cylinder
wing
longitudinal
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
EP87401147A
Other languages
English (en)
French (fr)
Other versions
EP0246977B1 (de
Inventor
Nicolas Kakko-Chiloff
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.)
Usinage Montage et Assistance Technique UMAT
Original Assignee
Usinage Montage et Assistance Technique UMAT
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9335496&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0246977(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Usinage Montage et Assistance Technique UMAT filed Critical Usinage Montage et Assistance Technique UMAT
Priority to AT87401147T priority Critical patent/ATE55325T1/de
Publication of EP0246977A1 publication Critical patent/EP0246977A1/de
Application granted granted Critical
Publication of EP0246977B1 publication Critical patent/EP0246977B1/de
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
    • B41F27/1281—Devices for attaching printing elements or formes to supports for attaching flexible printing formes details of the printing plate ends

Definitions

  • the present invention relates to a plate plate intended to be mounted and immobilized on a support cylinder of a rotary printer.
  • Rotary offset printing presses use plate cylinders on which plate plates are fixed which are wrapped around the lateral surface of the support cylinder.
  • For fixing the plate plates it is customary to use devices for fixing the two ends of the plate which are engaged in a longitudinal slot provided in the peripheral surface of the support cylinder.
  • All the known devices for fixing a plate-plate on its support cylinder are particularly complex and require the provision of additional members making it possible to exert traction on the plate-plate, giving the latter sufficient tension for the keep firmly pressed against the support cylinder during a printing operation.
  • the present invention aims to remedy these drawbacks by providing a plate-plate of a particularly simple, easy and inexpensive design to manufacture and maintaining itself in position on the peripheral surface of a support cylinder, without having to do use of auxiliary fasteners.
  • this plate plate intended to be mounted and immobilized on a support cylinder of a rotary printer which has, in its lateral surface, a longitudinal slot in which are engaged and maintained at the end portions of the plate plate folded towards the axis of the cylinder, is characterized in that it has, in the rest state in which it extends flat, a first wing folded back on one side the plate, at a first longitudinal end thereof, forming with the rest of the plate a first angle substantially equal to 90 ° and, at its second; longitudinal end, a second wing folded back on the same side of the plate-plate as the first, forming a second acute angle with the plane of the plate to which it is connected, these first and second angles being chosen so as to be less than obtuse and acute angles of the respective dihedrons which are delimited in the support cylinder, on either side of the slot which is inclined relative to the radial direction.
  • the two wings folded at the two longitudinal ends of the plate plate are engaged in the longitudinal slot provided in the support cylinder and they ensure d 'themselves, due to their elastic deformations which result from this engagement, the maintenance in place of the plate-plate on its support cylinder, and this with a satisfactory tension for this plate-plate.
  • a subject of the invention is also a plate cylinder for a rotary printing machine comprising, in its lateral surface, a longitudinal slot for fixing the ends of a plate, characterized in that the longitudinal slot is inclined relative to the radial direction to define, on either side of the slot, respective obtuse and acute angle dihedrons greater than the respective angles whose wings are folded at the longitudinal ends of the plate, on the same side thereof.
  • the plate plate which is shown in Figure 1 is made of an elastic metallic material and it is, at the start, in the form of a rectangular blank.
  • This plate-plate includes a rectangular main surface 1, constituting the engraved active part of the plate.
  • This planar engraved active part 1 is extended, at a first end, by a first wing 2 which is folded substantially at right angles, on one side of the plate, that is to say by forming an angle a equal to ( or close to) 90 °.
  • the plate has a second wing 3 folded back on the same side as the first wing 2.
  • This wing 3 comprises two sections, namely a first section 3a forming an acute angle b with the plane of the engraved active part 1, in extending towards the first wing 2, and a second section 3b extending the first section 3a outwards and substantially perpendicular to the plane of the planar engraved part 1.
  • the two wings 2 and 3 are obtained by bending an initially completely planar plate, as shown in phantom in FIG. 1.
  • the distance d between the fold line 4, between the first wing 2 and the planar engraved part 1 and the fold line 5 between the second wing 3 and the planar engraved part 1 is slightly less than the developed length of the lateral surface of the support cylinder on which the plate must be mounted and immobilized.
  • This support cylinder is indicated by the reference 6 in Figures 2 and 3.
  • This cylinder has, in the usual way, a longitudinal slot 7 in which must engage the folded end portions of the plate-plate.
  • This slot 7 extends in a direction which is inclined by a small angle relative to the radial direction 8 of the support cylinder and which forms an angle c with the plane P tangent to the cylinder at the point where the slot 7 opens.
  • This slot 7 thus delimits in the cylinder two opposite portions, namely a left portion forming a dihedral A of obtuse angle and a right portion forming a dihedron B of acute angle c.
  • the plate according to the invention is held on the support cylinder 6 as a result of the only elastic deformation of its wings 2 and 3.
  • the second wing 3 of the plate plate is subjected to a bending stress causing a reduction in the angle b, when it is engaged in the foreground in the longitudinal slot 7 , from the fact that it comes to cap the right dihedral B of angle c less than the normal angle b of the wing 3.
  • the second wing 3 is urged elastically in the direction of closing.
  • the first wing 2 of the plate plate which then comes to cap the left dihedral A obtuse angle, being forced to open slightly.
  • the angle a which it forms with the etched part 1 of the plate becomes greater than 90 ° C. and it is thus subjected to a bending stress in the direction of opening.
  • the first wing 2, engaged in the slot 7, is thus taken and clamped between the wall of the slot 7 and the second wing 3 forming a spring as seen in FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
EP87401147A 1986-05-22 1987-05-21 Auf einem Trägerzylinder in einer Rotationsdruckmaschine befestigte flexible Druckplatte Expired - Lifetime EP0246977B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401147T ATE55325T1 (de) 1986-05-22 1987-05-21 Auf einem traegerzylinder in einer rotationsdruckmaschine befestigte flexible druckplatte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8607313 1986-05-22
FR8607313A FR2598973B1 (fr) 1986-05-22 1986-05-22 Plaque-cliche destinee a etre montee et immobilisee sur un cylindre support d'une imprimeuse rotative et cylindre porte-cliche pour la fixation d'une plaque-cliche.

Publications (2)

Publication Number Publication Date
EP0246977A1 true EP0246977A1 (de) 1987-11-25
EP0246977B1 EP0246977B1 (de) 1990-08-08

Family

ID=9335496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401147A Expired - Lifetime EP0246977B1 (de) 1986-05-22 1987-05-21 Auf einem Trägerzylinder in einer Rotationsdruckmaschine befestigte flexible Druckplatte

Country Status (4)

Country Link
EP (1) EP0246977B1 (de)
AT (1) ATE55325T1 (de)
DE (1) DE3764175D1 (de)
FR (1) FR2598973B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0455068A1 (de) * 1990-04-25 1991-11-06 Bobst S.A. Verfahren zum Montieren und Befestigen einer Druckplatte auf einem Plattenzylinder in einer Offsetmaschine
US5379694A (en) * 1992-12-10 1995-01-10 Man Roland Druchmaschinen Ag Lateral register system for printing forms
WO1997038859A1 (en) * 1996-04-15 1997-10-23 Imation Corp. Printing plate having a crimped end portion and method for making the same
WO2003091023A1 (de) * 2002-04-25 2003-11-06 Koenig & Bauer Aktiengesellschaft Aufzug zur verwendung auf einem zylinder einer rotationsdruckmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB690946A (en) * 1950-08-14 1953-04-29 Block & Anderson Ltd Improvements in or relating to spirit duplicating machines
CH518176A (de) * 1969-11-18 1972-01-31 Linotype Machinery Ltd Zylinder für Rotationsdruckmaschine
FR2281223A1 (fr) * 1974-08-06 1976-03-05 Koenig & Bauer Ag Mecanisme pour la fixation de dispositifs de serrage de plaques d'impression sur des cylindres porte-plaques
US4214530A (en) * 1978-02-23 1980-07-29 Glanzner Gary C Metal printing plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB690946A (en) * 1950-08-14 1953-04-29 Block & Anderson Ltd Improvements in or relating to spirit duplicating machines
CH518176A (de) * 1969-11-18 1972-01-31 Linotype Machinery Ltd Zylinder für Rotationsdruckmaschine
FR2281223A1 (fr) * 1974-08-06 1976-03-05 Koenig & Bauer Ag Mecanisme pour la fixation de dispositifs de serrage de plaques d'impression sur des cylindres porte-plaques
US4214530A (en) * 1978-02-23 1980-07-29 Glanzner Gary C Metal printing plate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0455068A1 (de) * 1990-04-25 1991-11-06 Bobst S.A. Verfahren zum Montieren und Befestigen einer Druckplatte auf einem Plattenzylinder in einer Offsetmaschine
US5224423A (en) * 1990-04-25 1993-07-06 Bobst S.A. Method for mounting and fitting a printing plate on a plate cylinder of an offset printing machine
US5379694A (en) * 1992-12-10 1995-01-10 Man Roland Druchmaschinen Ag Lateral register system for printing forms
WO1997038859A1 (en) * 1996-04-15 1997-10-23 Imation Corp. Printing plate having a crimped end portion and method for making the same
WO2003091023A1 (de) * 2002-04-25 2003-11-06 Koenig & Bauer Aktiengesellschaft Aufzug zur verwendung auf einem zylinder einer rotationsdruckmaschine

Also Published As

Publication number Publication date
DE3764175D1 (de) 1990-09-13
FR2598973B1 (fr) 1991-02-08
EP0246977B1 (de) 1990-08-08
ATE55325T1 (de) 1990-08-15
FR2598973A1 (fr) 1987-11-27

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