EP0246977B1 - 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
EP0246977B1
EP0246977B1 EP87401147A EP87401147A EP0246977B1 EP 0246977 B1 EP0246977 B1 EP 0246977B1 EP 87401147 A EP87401147 A EP 87401147A EP 87401147 A EP87401147 A EP 87401147A EP 0246977 B1 EP0246977 B1 EP 0246977B1
Authority
EP
European Patent Office
Prior art keywords
plate
wing
support cylinder
cylinder
printing plate
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
EP87401147A
Other languages
English (en)
French (fr)
Other versions
EP0246977A1 (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
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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(B1) "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 wound 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.
  • cylinders are already known having four diametrically opposite slots inclined with respect to the radial axes for fixing plates by wedging the two end wings of the plate in one inclined slots (see CH - 518 176).
  • a plate cylinder having a slot arranged radially with respect to the cylinder but, in this case, the ends of the plate plate although folded to enter the slot are maintained in these by elastically annexed members subjected to a rotary blocking and unblocking element.
  • Most of these solutions make it possible to exert traction on the printing plate in order to give it sufficient tension to keep it firmly applied against the support cylinder during a printing operation, but these arrangements are complicated to perform, little safe and expensive.
  • 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 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 of the plate, at a first longitudinal end of that -this, by 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, by 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 the 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, because of 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.
  • the invention also relates to a plate cylinder for a rotary printing press 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 of that -this.
  • 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 in the direction of the first wing 2, and a second section 3b extending the first section 3a outward and substantially perpendicular to the plane of the plane etched part 1.
  • the two wings 2 and 3 are obtained by bending a initially completely flat plate, as shown in phantom in Figure 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 at 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 an increase in the angle b, when it is engaged in the foreground in the longitudinal slot 7 , due to the fact that it comes to cap the right dihedral B with an acute angle C greater than the original angle b of the wing 3.
  • the second wing 3 is resiliently biased 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 ° 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)

Claims (2)

1. Druckplatte, auf einem Trägerzylinder in einer Rotationsdruckmaschine befestigt, der in seiner Seitenoberfläche einen Längseinschnitt (7) aufweist, der in bezug auf die radiale Richtung geneigt ist, in welcher die zur Zylinderachse gefalteten Endteile der Druckplatte geführt und gehalten werden, dadurch gekennzeichnet, dass sie im Ruhezustand, in welchem sie flach liegt, einen ersten Schenkel (2) aufweist, der auf einer Seite der Platte (1) abgebogen ist, an einem ersten Längsende derselben, wobei er mit dem Rest der Platte einen ersten Winkel (a) bildet, der im wesentlichen gleich 90° ist und, an ihrem zweiten Längsende einen zweiten Schenkel (3) aufweist, der auf dieselbe Seite der Druckplatte abgebogen ist wie der erste Schenkel, wobei er mit der Ebene der Platte (1), mit der er verbunden ist, einen zweiten spitzen Winkel (b) bildet, wobei dieser erste und zweite Winkel (a, b) so gewählt werden, dass sie kleiner als der stumpfe und spitze Winkel der jeweiligen Dieder (A, B) sind, die im Trägerzylinder (6) beiderseits des Einschnitts begrenzt sind.
2. Druckplatte gemäss Anspruch 1, dadurch gekennzeichnet, dass der zweite Schenkel (3) aus zwei Abschnitten (3a, 3b) besteht, d.h. aus einem ersten von der Platte abstehenden und in bezug auf diese im zweiten Winkel (b) geneigten Abschnitt (3a), und aus einem zweiten Abschnitt (3b), der den ersten Abschnitt (3a) nach aussen verlängert und im wesentlichen senkrecht zur Plattenebene verläuft, um sich auf den ersten Schenkel (2) zu stützen, wenn sich die Platte im montierten Zustand befindet.
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 EP0246977A1 (de) 1987-11-25
EP0246977B1 true 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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10218475B4 (de) * 2002-04-25 2006-06-29 Koenig & Bauer Ag Zylinder einer Rotationsdruckmaschine mit einem Aufzug

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH682382A5 (fr) * 1990-04-25 1993-09-15 Bobst Sa Procédé de montage et de fixation d'une plaque d'impression sur le cylindre porte-plaque d'une machine d'impression.
DE4241588C2 (de) * 1992-12-10 1994-11-17 Roland Man Druckmasch Seitenregistersystem für Druckformen
WO1997038859A1 (en) * 1996-04-15 1997-10-23 Imation Corp. Printing plate having a crimped end portion and method for making the same

Family Cites Families (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
GB1486873A (en) * 1974-08-06 1977-09-28 Koenig & Bauer Ag Printing press cylinder with means of securing a mounting block for a printing plate or blanket clamping device
US4214530A (en) * 1978-02-23 1980-07-29 Glanzner Gary C Metal printing plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10218475B4 (de) * 2002-04-25 2006-06-29 Koenig & Bauer Ag Zylinder einer Rotationsdruckmaschine mit einem Aufzug

Also Published As

Publication number Publication date
DE3764175D1 (de) 1990-09-13
EP0246977A1 (de) 1987-11-25
FR2598973B1 (fr) 1991-02-08
ATE55325T1 (de) 1990-08-15
FR2598973A1 (fr) 1987-11-27

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