EP0039765B1 - Vorrichtung zum Befestigen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen - Google Patents

Vorrichtung zum Befestigen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen Download PDF

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Publication number
EP0039765B1
EP0039765B1 EP81101857A EP81101857A EP0039765B1 EP 0039765 B1 EP0039765 B1 EP 0039765B1 EP 81101857 A EP81101857 A EP 81101857A EP 81101857 A EP81101857 A EP 81101857A EP 0039765 B1 EP0039765 B1 EP 0039765B1
Authority
EP
European Patent Office
Prior art keywords
clamping
groove
plate cylinder
clamping body
bent
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
Application number
EP81101857A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0039765A1 (de
Inventor
Rainer Burger
Werner Kleininger
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.)
Manroland AG
Original Assignee
MAN Roland 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0039765A1 publication Critical patent/EP0039765A1/de
Application granted granted Critical
Publication of EP0039765B1 publication Critical patent/EP0039765B1/de
Expired 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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means

Definitions

  • the invention relates to a device for fastening flexible printing plates on the plate cylinder of rotary printing presses, with features as can be seen from the preamble of claim 1 and known from DE-A 26 54 255.
  • the device shown there however, consists of a relatively large number, in some cases also relatively complicated, of individual parts, which overall also require a relatively complex and expensive production.
  • parts of the same lie uncovered in the pit after the printing plate has been clamped, with the result that these parts are exposed to relatively heavy contamination during printing operation.
  • the latter in turn - in order to ensure their functionality - requires a relatively frequent cleaning of the fastening device.
  • 1 is a plate cylinder of a rotary printing machine, also not shown, 2 is a flexible printing plate, 3 is an axially parallel pit formed in the plate cylinder 1, 4 is the left pit wall, 5 is the right pit wall, and 6 is the bottom of the pit 3 designated.
  • the pit 3 serves to receive the components of the device according to the invention for fastening the flexible pressure plate 2 on the plate cylinder 1.
  • the two pit walls 4 and 5 each run at an acute angle into the lateral surface 7 of the plate cylinder 1.
  • the printing plate 2 has an angled printing plate start 8 and an angled printing plate end 9. 10 denotes a dash-dotted middle perpendicular through the pit 3.
  • the two pit walls 4 and 5 are each mirror-symmetrical to the perpendicular perpendicular 10 of the pit 3 and each run at the same acute angle to the lateral surface 7 of the Plattenzy linders 1 out.
  • the pressure plate 2 can always be fixed in the same, precisely defined position on the plate cylinder 1 in each clamping direction, by which circumstance special measures are not necessary, for example when creating the pressure plate, because of the precisely specified dimensional relationships.
  • the device according to the invention for fastening the pressure plate 2 further consists of a clamping spring arrangement which has two leaf spring parts 11 and 12, each with a clamping leg 13 or 14, which essentially each extend along part of a pit wall 4 or 5.
  • the device according to the invention has a clamping body 16, which is displaceable along the central perpendicular 10 of the pit 3 and is constantly pressurized by a compression spring 15 in the direction of the lateral surface 7 of the plate cylinder 1, with wedge-shaped lateral pressure surfaces 17 and 18, through which the two clamping legs 13 and 14 of the two leaf spring parts 11 and 12 can each be deflected in the direction of the adjacent pit wall 4 or 5.
  • the angled pressure plate end 9 of the pressure plate 2 can also be clamped between the angled pressure plate beginning 8 resting on a pit wall 4 or 5 and one of the two clamping legs 13 or 14, while the other clamping leg is supported on the other pit wall, whereby in the tensioned state, the clamping force introduced via the compression spring-loaded clamping body 16 when the plate cylinder 1 rotates is increased by the then also centrifugal force-applied clamping body 16 as a function of the rotational speed.
  • the clamping body 16 has a continuous guide bore 19 with which it is axially displaceable along a cylindrical guide shaft 20.
  • the latter is part of a guide pin 21 which is arranged coaxially to the center perpendicular 10 of the pit 3 and which is fastened to the bottom 6 of the pit 3 by means of a threaded bolt 22 secured against loosening in a threaded bore 23 in the plate cylinder 1.
  • the guide shaft 20 on the guide pin 21 also serves to guide the compression spring 15, which is supported at one end on a contact surface 24 on the clamping body 16 and at the other end on the bottom 6 of the pit 3.
  • each of the two leaf spring parts 11 and 12 of the clamping spring arrangement are each formed in one piece and in the same way.
  • Each of the two leaf spring parts 11 and 12 has on its upper end of the clamping leg 13 or 14 facing the lateral surface 7 of the of the pressure plate beginning 8 and pressure plate end 9 between the respective pit wall 4 or 5 and the associated clamping leg 13 or 14.
  • each of the two leaf spring parts 11 and 12 at the lower end of the clamping leg 13 and 14 facing the bottom 6 of the pit 3 has a leg part 27 and 28 which is also angled or bent toward the interior of the pit 3 and with which it is attached a part of the bottom 6 of the pit 3 rests and is fastened there by means of a screw 29 or 30 or the like fastening means.
  • the exemplary embodiment according to FIG. 1 differs from the exemplary embodiment according to FIG. 1 with the same structure only in that the bottom 6 of the pit 3 is flat and the leaf spring parts 11 and 12 are combined to form a one-piece spring element.
  • the two clamping legs 13 and 14 of the two leaf spring parts 11 and 12 are connected at their lower ends by a web 31 which has a through bore 32 in the middle for the passage of the threaded bolt 22 on the guide bolt 21, and also on the bottom 6 of the pit 3 rests and is clamped there by means of the guide bolt 21 with the interposition of a washer 33 lying on top, on which the compression spring 15 is also supported in this case.
  • the washer 33 covers the web 31 for the most part, so that a springing and change in shape thereof in the direction of the outer surface 7 of the plate cylinder 1 is effectively avoided.
  • the two leaf spring parts 11 and 12 are combined as well as in the embodiment of FIG. 2 to form a one-piece spring element.
  • the clamping legs 13 and 14 of the two leaf spring parts 11 and 12 are each connected at the upper end facing the lateral surface 7 of the plate cylinder 1 via curved transition regions by a web 34 which is fastened to the outer end of the guide bolt 21.
  • the guide pin 21 has a blind hole 35, in the outer part of which a thread 36 for a screw 37 and in the inner part of a hexagon 38 have been inserted, the latter serving to receive a tool for screwing the guide pin 21 into the plate cylinder 1.
  • a hole 39 is provided for carrying out the threaded bolt of the screw 37 in the web 34, the head 40 is pressed against the web 34 to the end face of the guide pin 21 by '.
  • the two leaf spring parts 11 and 12 are combined as well as in the solution according to FIG. 3 to form a one-piece spring element and their clamping Legs 13 and 14 connected at the upper end facing the lateral surface 7 of the plate cylinder 1 via transition radii by a web 41.
  • the one-piece spring element has a hole 42 in the middle of the web 41 with a diameter equal to or slightly larger than the diameter of the guide bore 19 in the clamping body 16 and is fastened on top of the latter by suitable means.
  • the wedge-shaped pressure surfaces 17 and 18 on the clamping body 16 are spatially spaced from the latter in this embodiment to ensure a certain spring travel of the two clamping legs 13 and 14.
  • the clamping legs 13 and 14 have at their lower, the bottom 6 of the pit 3 facing angled support arms 43 and 44 with which they are supported on the spaced pressure surfaces 17 and 18 of the clamping body 16 in the lower third of the same.
  • the device according to the invention consists of a few components which are simple to manufacture and can be installed in the area of the pit 3.
  • the device according to the invention also enables a very simple attachment of the flexible pressure plate 2 to the plate cylinder 1, with only a few hand movements and no special tools being required in this regard.
  • the pressure plate 2 is placed with its pressure plate beginning 8 on one of the two pit walls 4 and 5 and pushed into the pit until the pressure plate beginning is gripped by the clamping leg 13 or 14 of the clamping spring arrangement and then up to it End position can be inserted.
  • the flexible pressure plate 2 is pulled over the plate cylinder 1, then the pressure plate end 9 is inserted into the pit 3 and moved along the beginning of the pressure plate towards the bottom 6 of the pit 3 to its end position.
  • the compression spring 15 presses the clamping body in the direction of the lateral surface 7 of the plate cylinder 1, so that the adjacent pressure plate end 9 is pressed against the adjacent pressure plate beginning 8 and this in turn is pressed against the pit wall 4 or 5 by the outwardly pressed clamping leg 13 or 14, the opposite clamping leg is pressed against the opposite pit wall.
  • the clamping body assumes an end position which is determined by the geometry of the leaf spring parts 11 and 12, the compressive force of the compression spring 15 and the surface condition of the adjoining surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP81101857A 1980-05-13 1981-03-13 Vorrichtung zum Befestigen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen Expired EP0039765B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3018249 1980-05-13
DE3018249A DE3018249C2 (de) 1980-05-13 1980-05-13 Vorrichtung zum Befestigen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0039765A1 EP0039765A1 (de) 1981-11-18
EP0039765B1 true EP0039765B1 (de) 1984-02-08

Family

ID=6102285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101857A Expired EP0039765B1 (de) 1980-05-13 1981-03-13 Vorrichtung zum Befestigen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen

Country Status (4)

Country Link
US (1) US4376414A (enrdf_load_stackoverflow)
EP (1) EP0039765B1 (enrdf_load_stackoverflow)
JP (1) JPS576773A (enrdf_load_stackoverflow)
DE (1) DE3018249C2 (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116506C2 (de) * 1981-04-25 1984-05-17 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Befestigen einer Druckplatte auf dem Formzylinder einer Rotationsdruckmaschine
DE330736T1 (de) * 1988-02-29 1990-02-08 Rockwell International Corp., Pittsburgh, Pa. Spannungsloser plattenverschluss.
JP3030582B2 (ja) * 1991-09-19 2000-04-10 株式会社小森コーポレーション 輪転印刷機の刷版交換装置
DE4225949C2 (de) * 1992-08-06 1994-10-13 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE29600845U1 (de) * 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE19758453C2 (de) * 1996-01-19 2002-09-19 Roland Man Druckmasch Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE19606744C2 (de) * 1996-02-23 1998-12-10 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE19703290A1 (de) * 1997-01-30 1998-08-06 Roland Man Druckmasch Vorrichtung zum Befestigen einer flexiblen Bespannung auf einem Druckzylinder
US5915303A (en) * 1998-02-17 1999-06-29 Goss Graphic Systems, Inc. Spring clip plate retainer
US6401617B1 (en) * 2000-07-18 2002-06-11 F. Richard Lyndhurst Printing plate lockup mechanism
US6578484B2 (en) * 2001-06-14 2003-06-17 Masthead International, Inc. Printing plate lock-up assemblies having jaw assembly and registration pin assembly
US20050268803A1 (en) * 2002-09-26 2005-12-08 Andreas Zahnd Clamping device for clamping a flexible covering of a cylinder of a printing press
DE102004062598A1 (de) * 2004-12-24 2006-07-06 Man Roland Druckmaschinen Ag Vorrichtung für einen Druckzylinder, insbesondere Offsetdruckzylinder für Rollen-Rotationsdruckmaschinen
DE102006012760A1 (de) * 2006-03-17 2007-09-20 Man Roland Druckmaschinen Ag Vorrichtung zum Befestigen einer flexiblen Bespannung auf einen Druckzylinder
US20080216691A1 (en) * 2007-03-05 2008-09-11 Stephens Ronald F Printing plate lock mechanisms
DE102007055282A1 (de) * 2007-11-20 2009-06-04 Wifag Maschinenfabrik Ag Klemmvorrichtung mit schwenkbeweglichem Klemmstück
JP5500863B2 (ja) * 2009-04-24 2014-05-21 昭和アルミニウム缶株式会社 印刷用版の装着装置、印刷機および印刷システム
JP6297479B2 (ja) * 2014-12-05 2018-03-20 株式会社ミヤコシ 刷版の固定装置

Family Cites Families (21)

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Publication number Priority date Publication date Assignee Title
DE424222C (de) * 1924-06-13 1926-01-20 Maschf Augsburg Nuernberg Ag Vorrichtung zum Aufspannen von Druckplatten auf den Plattenzylinder von lithographischen Druckmaschinen
US2229059A (en) * 1938-06-20 1941-01-21 Rapidex Corp Sheet attaching means for duplicators
CH269525A (de) * 1949-01-11 1950-07-15 Graf Werner Vorrichtung zum Festhalten von Matrizen, Papierfolien und dergleichen an Druckzylindern von Vervielfältigungsapparaten.
DE1218469B (de) * 1963-03-20 1966-06-08 Maschf Augsburg Nuernberg Ag Vorrichtung am Formzylinder von Rotationsdruckmaschinen zum Befestigen biegsamer, ueber einen Teil des Druckzylinderumfangs reichender Druckplatten
US3425348A (en) * 1966-03-21 1969-02-04 Miehle Goss Dexter Inc Clamping arrangement for blanket in printing press
US3408933A (en) * 1966-03-24 1968-11-05 Miehle Goss Dexter Inc Continuous take-up clamping arrangement for blanket in printing press
US3608487A (en) * 1969-08-27 1971-09-28 Harris Intertype Corp Flexible plate clamping assembly including inwardly bowed spring and movable jaw
DE6941597U (de) * 1969-10-24 1970-01-22 Karl Raes Vorrichtung zum aufspannen von drueckplatten auf plattenzylinder von druckmaschinen
US3757691A (en) * 1972-06-12 1973-09-11 North American Rockwell Printing cylinder
DE2334127A1 (de) * 1973-07-05 1975-01-23 Koenig & Bauer Ag Vorrichtung zum befestigen und spannen von biegsamen druckplatten
DE2547481C3 (de) * 1975-10-23 1983-12-15 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Vorrichtung zum Befestigen und Spannen von biegsamen Druckplatten
US4191106A (en) * 1975-12-01 1980-03-04 K and Manufacturing Company, Inc. Printing plate clamping assembly
DE2620427C3 (de) 1976-05-08 1979-03-08 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum Befestigen von biegsamen Druckplatten auf dem Plattenzylinder von Rotationsdruckmaschinen
DE2634252A1 (de) * 1976-07-30 1978-02-02 Frankenthal Ag Albert Vorrichtung zum spannen von biegsamen druckplatten am plattenzylinder von rotationsdruckmaschinen
DE2634554C2 (de) * 1976-07-31 1982-03-18 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Vorrichtung zum Befestigen und Spannen von biegsamen Druckplatten
CH609277A5 (en) * 1976-10-20 1979-02-28 Grapha Holding Ag Rotary printing machine
US4061087A (en) * 1976-12-17 1977-12-06 Newspaper Equipment Company Plate locking structure for press cylinders
GB1556389A (en) * 1977-05-02 1979-11-21 Linotype Machinery Ltd Printing machines
DE2744371C3 (de) 1977-10-01 1980-04-10 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum Befestigen und Spannen von biegsamen Druckplatten
DE2830955A1 (de) * 1978-07-14 1980-01-24 Olympia Werke Ag Elektrofotografisches kopiergeraet mit einer austauschbaren fotoleiterbahn
DE7825185U1 (de) 1978-08-24 1978-12-14 Basf Ag, 6700 Ludwigshafen Plattenspannvorrichtung zum aufspannen von biegsamen platten auf einem zylinder

Also Published As

Publication number Publication date
DE3018249A1 (de) 1981-11-19
DE3018249C2 (de) 1982-09-09
JPS576773A (en) 1982-01-13
EP0039765A1 (de) 1981-11-18
US4376414A (en) 1983-03-15
JPH0319065B2 (enrdf_load_stackoverflow) 1991-03-14

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