EP0768177A1 - Procédé et dispositif de fixation et de serrage de plaques d'impression ayant des bords pliés - Google Patents

Procédé et dispositif de fixation et de serrage de plaques d'impression ayant des bords pliés Download PDF

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Publication number
EP0768177A1
EP0768177A1 EP96115768A EP96115768A EP0768177A1 EP 0768177 A1 EP0768177 A1 EP 0768177A1 EP 96115768 A EP96115768 A EP 96115768A EP 96115768 A EP96115768 A EP 96115768A EP 0768177 A1 EP0768177 A1 EP 0768177A1
Authority
EP
European Patent Office
Prior art keywords
plate cylinder
nose
support surface
lug
hook
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
EP96115768A
Other languages
German (de)
English (en)
Other versions
EP0768177B1 (fr
Inventor
Claus Dieter Barrois
Georg Johann Lindner
Hans-Jürgen Zelfel
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 EP0768177A1 publication Critical patent/EP0768177A1/fr
Application granted granted Critical
Publication of EP0768177B1 publication Critical patent/EP0768177B1/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 method and a device for fastening and tensioning printing plates with folded ends on a plate cylinder of a rotary printing press according to the preambles of claims 1 and 3.
  • EP 01 24 008 A2 describes a forme cylinder with a device for clamping flexible printing plates with clamping means for folded ends of a printing plate. These clamping devices are arranged in a pit and designed as a triangular segment body with a hanging edge, the outer surface of which covers the pit gap in the tensioned state of the pressure plate and corresponds to the contour of the forme cylinder.
  • DE 33 00 678 C2, DE 44 20 314 A1, DE 80 34 630 U1 and EP 0 132 532 B1 disclose devices for fastening and tensioning printing plates with bent ends on a plate cylinder of a rotary printing press.
  • the invention has for its object to provide a method and an apparatus for fastening and tensioning printing plates with folded ends on a plate cylinder of a rotary printing press.
  • the device according to the invention also makes it possible to overprint a hanging nose during the printing process.
  • the device according to the invention ensures a spit-free mounting of the hanging nose. Pressure disturbances due to movements of the hooking nose are avoided.
  • a molding compound of a bearing of a clamping spindle is free of forces in the clamping state.
  • the device according to the invention is shown in the drawing and is described in more detail below.
  • a plate cylinder 1 of a rotary printing press has a left and right hooking nose 2, 3, which are each formed by the outer and inner surfaces 4, 6, 7, 8.
  • the respective outer surface 4, 6 includes with the inner surface 7, 8 an acute angle alpha of 45 °, for example, and is adapted to a curvature of a contour 9 of the plate cylinder 1.
  • hook-in lugs 2, 3 run parallel to an axis of rotation 5 of the plate cylinder 1 and are delimited on their outer surface 4, 6 by the contour 9 of the plate cylinder 1.
  • a channel 11 runs axially, for example with a U-shaped cross section.
  • a seal 12 for. B. a round cord inserted.
  • a pressure plate 13 or a carrier plate of a rubber blanket is hooked into the hook-in lugs 2, 3 with its bent ends 14, 16. Folded legs 17, 18 of these ends also enclose with the pressure plate an opening angle alpha of, for example, 45 °, which is adapted to the hook-in lugs 2, 3.
  • the left hanging lug 2 is molded directly into the plate cylinder 1, while the right hanging lug 3 is pivotally arranged, for example, on a clamping spindle 19. It is also possible to make both hook-in lugs 2, 3 pivotable. In a tensioned state, the tensioning spindle 19 continuously continues the contour 9 of the plate cylinder 1 with the hanging nose 3.
  • a support surface 23 adapted to this surface 22 is integrally formed on the plate cylinder 1 in the direction of its interior 21.
  • This surface 22 approximately opposite a support surface 24 is arranged on an underside of a tip of the hanging lug 3, for which a support surface 26 is also provided which is directly molded onto the interior 21 of the plate cylinder 1.
  • the two support surfaces 23, 26 do not run parallel and preferably form an angle delta of 15 ° to 30 °, that is to say the two support surfaces 23, 26 are tapered toward one another.
  • the clamping spindle 19 is pivotally mounted in a cylindrical pit 27 in a hardened, shell-shaped molding compound 28 about its axis of rotation 20.
  • the pivoting movement for tensioning and releasing the pressure plate 13 is generated by means of a worm gear 29 arranged at an end face of the tensioning spindle 19.
  • This self-locking worm gear 29 consists essentially of a toothed segment 31, a first worm 32, a worm wheel 33 and a second worm 34.
  • the first worm 32 is fastened together with the worm wheel 33 on a rotatably mounted shaft 36.
  • This shaft 36 is arranged at right angles to the clamping spindle 19 on one end face of the plate cylinder 1 in two bearings 37, 38.
  • the worm 32 of this shaft 36 engages in the toothed segment 31 of the clamping spindle 19 which is fastened on the end face, while the worm wheel 33 meshes with the second worm 34.
  • the second screw 34 is provided in the present embodiment with a hexagon 39 to initiate a rotary movement, but there are also other actuators, for. B. stepper motors, possible. Instead of the worm gear 29, other drives for generating the pivoting movement are also possible.
  • the operation of the device according to the invention is as follows:
  • the pressure plate 13 is first with its folded end 14 in the fixed hanging lug 2 at the beginning of the print and z. B. after one revolution with its end 16 hooked into the open, that is to say pivoted outward hooking nose 3 at the end of the print.
  • a tool engaging the hexagon 39 is now rotated on the second worm 34, so that this rotary movement is transmitted to the shaft 36 and finally to the toothed segment 31.
  • the clamping spindle 19 pivots about its axis of rotation 20 with the hook-in nose 3 in the direction of the interior 21 of the plate cylinder 1 and clamps the pressure plate 13.
  • the contact surface 24 of the hook-in nose 3 rests on the support surface 26.
  • a torque is now introduced into the clamping spindle 19 by means of the worm gear 29.
  • the bearing surface 24 is pressed onto the support surface 26 and forms a new pivot axis 41.
  • the clamping spindle 19 is now lifted off the molding compound 28 about this new pivot axis 41, moved outward in the direction of the contour 6 and pressed with its surface 22 against the support surface 23 of the plate cylinder 1. A clear, splinter-free position of the clamping spindle 19 and the hook-in nose 3 is thus achieved. This second pivoting movement takes place within a play between the clamping spindle 19 and the molding compound 28.
  • the hook-in nose 3 can only be supported at its ends in the axial direction in two bearing rings.
  • the inside diameter of the bearing rings is somewhat larger than the outside diameter of the clamping spindle 19 stored therein.
  • a bearing is provided as a positive guide, which brings the bearing surface 24 of the hooking lug 3 into contact with the support surface 26 of the plate cylinder 1.
  • Hanging nose 3 and plate cylinder 1 are with surfaces 22, 24; 23; 26 provided which form a positive guidance. Due to this positive guidance, the hook-in nose 3 is pressed without play out of the channel 11 in the direction of the contour 6 against the plate cylinder 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP96115768A 1995-10-07 1996-10-02 Dispositif de fixation et de serrage de plaques d'impression ayant des bords pliés Expired - Lifetime EP0768177B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537420A DE19537420C1 (de) 1995-10-07 1995-10-07 Vorrichtung zum Befestigen und Spannen von Druckplatten mit abgekanteten Enden
DE19537420 1995-10-07

Publications (2)

Publication Number Publication Date
EP0768177A1 true EP0768177A1 (fr) 1997-04-16
EP0768177B1 EP0768177B1 (fr) 1999-04-21

Family

ID=7774295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115768A Expired - Lifetime EP0768177B1 (fr) 1995-10-07 1996-10-02 Dispositif de fixation et de serrage de plaques d'impression ayant des bords pliés

Country Status (4)

Country Link
US (1) US5749299A (fr)
EP (1) EP0768177B1 (fr)
JP (1) JP2918103B2 (fr)
DE (2) DE19537420C1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19922021A1 (de) * 1999-05-12 2000-11-23 Zirkon Druckmaschinen Gmbh Einrichtung zum Befestigen und Spannen von Druckplatten und Gummitücher
DE10208262A1 (de) * 2002-02-26 2003-09-04 Roland Man Druckmasch Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE102004008723A1 (de) * 2004-02-23 2005-09-15 Man Roland Druckmaschinen Ag Druckwerkzylinder mit einem Spannkanal
DE102004042342B4 (de) * 2004-09-01 2008-02-14 Maschinenfabrik Wifag Spanneinrichtung für einen Spannkanal eines Zylinderkörpers, Druckformzylinder und Verfahren zur Herstellung
JP2009023313A (ja) * 2007-07-24 2009-02-05 Tokyo Kikai Seisakusho Ltd 刷版装着装置
JP2009160927A (ja) * 2007-12-13 2009-07-23 Komori Corp ブランケットまたは版の装着装置
WO2022031742A1 (fr) * 2020-08-06 2022-02-10 Crane & Co., Inc. Mécanisme et procédé améliorés de mise en tension de garnitures et d'éléments frontaux
CN112562291B (zh) * 2020-12-01 2022-04-26 朱列长 一种电子信息实验室用便于拆装悬挂结构的报警装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858305A (en) * 1928-06-14 1932-05-17 Meisel Press Mfg Company Press cylinder
DE641173C (de) * 1933-11-11 1937-01-23 Koenig & Bauer Schnellpressfab Aufspannvorrichtung fuer biegsame Druckplatten auf dem Formzylinder von Rotationsdruckmaschinen
GB514118A (en) * 1938-04-27 1939-10-31 Ernest Arthur Timson Improvements in or relating to printing cylinders
US2409536A (en) * 1943-02-16 1946-10-15 Hoe & Co R Printing cylinder blanket securing mechanism
DE2720673A1 (de) * 1977-05-07 1978-11-09 Maschf Augsburg Nuernberg Ag Vorrichtung zum spannen des gummituches auf einem zylinder einer offsetdruckmaschine
DE4222332A1 (de) * 1992-07-08 1994-01-13 Heidelberger Druckmasch Ag Vorrichtung zur Befestigung und zur Lageänderung eines Zylinderaufzuges

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US469226A (en) * 1892-02-23 Abrading-cylinder for polishing-machines
US1604082A (en) * 1924-11-10 1926-10-19 James T Robinson Apparatus for offset photogravure printing
US2051858A (en) * 1934-12-18 1936-08-25 Hoe & Co R Printing cylinder
US3020842A (en) * 1960-05-12 1962-02-13 Hoe & Co R Offset printing plate clamp
US3362327A (en) * 1965-01-28 1968-01-09 Cottrell Company Cylinder lockup for wrap-around plates and blankets
DE8034630U1 (de) * 1980-12-24 1983-09-08 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Formzylinder fuer bogenrotations-tiefdruck-druckmaschinen
DE3300678A1 (de) * 1983-01-11 1984-07-19 Frankenthal Ag Albert Zylinder fuer tiefdruckmaschinen
DE3315488A1 (de) * 1983-04-28 1984-10-31 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum spannen von druckplatten
DE3326215C2 (de) * 1983-07-21 1986-04-03 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Aufspannen einer Druckplatte oder eines Gummituches
DE4208209A1 (de) * 1992-03-14 1993-09-16 Heidelberger Druckmasch Ag Vorrichtung zum spannen eines tuches auf ueberfuehrzylindern von bogendruckmaschinen
DE4420314C2 (de) * 1994-06-10 1999-02-04 Koenig & Bauer Albert Ag Vorrichtung zum Befestigen und Spannen von Druckplatten mit "Z"-förmig abgekanteten Enden

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858305A (en) * 1928-06-14 1932-05-17 Meisel Press Mfg Company Press cylinder
DE641173C (de) * 1933-11-11 1937-01-23 Koenig & Bauer Schnellpressfab Aufspannvorrichtung fuer biegsame Druckplatten auf dem Formzylinder von Rotationsdruckmaschinen
GB514118A (en) * 1938-04-27 1939-10-31 Ernest Arthur Timson Improvements in or relating to printing cylinders
US2409536A (en) * 1943-02-16 1946-10-15 Hoe & Co R Printing cylinder blanket securing mechanism
DE2720673A1 (de) * 1977-05-07 1978-11-09 Maschf Augsburg Nuernberg Ag Vorrichtung zum spannen des gummituches auf einem zylinder einer offsetdruckmaschine
DE4222332A1 (de) * 1992-07-08 1994-01-13 Heidelberger Druckmasch Ag Vorrichtung zur Befestigung und zur Lageänderung eines Zylinderaufzuges

Also Published As

Publication number Publication date
JP2918103B2 (ja) 1999-07-12
JPH09123405A (ja) 1997-05-13
EP0768177B1 (fr) 1999-04-21
DE19537420C1 (de) 1997-03-13
US5749299A (en) 1998-05-12
DE59601700D1 (de) 1999-05-27

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