EP0705691A1 - Cylindre de transfert de feuilles pour machines d'impression rotatives - Google Patents

Cylindre de transfert de feuilles pour machines d'impression rotatives Download PDF

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Publication number
EP0705691A1
EP0705691A1 EP95112719A EP95112719A EP0705691A1 EP 0705691 A1 EP0705691 A1 EP 0705691A1 EP 95112719 A EP95112719 A EP 95112719A EP 95112719 A EP95112719 A EP 95112719A EP 0705691 A1 EP0705691 A1 EP 0705691A1
Authority
EP
European Patent Office
Prior art keywords
gripper
positioning device
wedge
guiding drum
positioning
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
EP95112719A
Other languages
German (de)
English (en)
Other versions
EP0705691B1 (fr
Inventor
Klemens Kemmerer
Franz-Peter Richter
Harald Bayer
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 EP0705691A1 publication Critical patent/EP0705691A1/fr
Application granted granted Critical
Publication of EP0705691B1 publication Critical patent/EP0705691B1/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
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers

Definitions

  • the invention relates to a sheet-guiding drum between the printing units or further processing units of rotary printing presses using one or more gripper bridges, which are distributed uniformly around the drum circumference and can be adjusted to different substrate thicknesses.
  • a central gripper turn bar adjustment for two- and multiple-sized transfer drums is known.
  • Means acting on the gripper pads allow the individual adjustment of each pad and on these means act altogether the positioning means which adjust the gripper pads and which are actuated by a central adjusting device arranged on the drum body.
  • the central actuating device can be motor-driven and controlled from a control panel. Instructions on how to couple the drive to the actuator cannot be found.
  • a device for positioning the gripper support of a gripper bridge of a sheet guiding cylinder is known.
  • the positioning of the gripper pad is carried out by means of an adjusting rod which is arranged in the cylinder axis against spring force by means of a screw and is arranged under a gripper pad extending over the entire length of the cylinder.
  • the contact surfaces of the gripper support and adjusting rods form a thrust wedge transmission in the cylinder axis direction, such that a displacement of the adjusting rod effects the radial positioning of the gripper supports.
  • the disadvantage is that a high level of effort is required for the central adjustment of the gripper bars to the respective substrate thickness.
  • basic and fine adjustment of the gripper bar is necessary in order to enable a common adjustment of all gripper bar.
  • a separate adjustment of the gripper bar is not possible, for example to avoid inaccuracies when transferring or taking over sheets between sheet-guiding cylinders or if the gripper bar is inadvertently adjusted.
  • the object of the invention is to make a decentralized individual adjustment (raising or lowering) of all gripper bridges of sheet-guiding drums in a printing press together to the substrate thickness to be processed.
  • the solution according to the invention is primarily suitable for sheet-guiding drums (bypass drums), it can also be used on sheet-guiding cylinders and is therefore also suitable for adjusting the gripper bar for feed drums or pre-gripper cylinders.
  • the present invention is particularly suitable for one to four times the size of drums (based on a single-size impression cylinder) with the corresponding number of gripper bridges arranged symmetrically on the circumference. It is used to process substrates of different thicknesses, such as paper or cardboard.
  • the decentralized individual adjustment of the gripper pads of all sheet-guiding drums in a printing press shortens the changeover times and minimizes subjective influences.
  • the invention represents an economical, automatable solution.
  • the actuating device on the side frame is preferably aligned with the circle of positioning devices resulting in printing operation, the actuation being carried out by an electric motor or a pneumatically or hydraulically operated working cylinder.
  • the adjustment movement of the positioning device is transmitted by periodically coupling the actuating device to the adapters arranged on the rotating, sheet-guiding drum and assigned to the positioning device.
  • the gripper cantilever bars can be set to any printing material thickness, in that the two actuating devices act differentially controlled on the positioning device. In printing practice, a simple changeover (two positions) of the gripper bars from paper to cardboard and vice versa has also proven its worth.
  • the sheet-guiding drums of the printing machine do not have to be rotated into a defined angular position, but all or even individual gripper cantilevers are moved past the positioned actuating devices on their circle at low speed in the creep speed of the printing machine, so that periodically a coupling of actuating device and adapter that adjusts the positioning device the positioning device.
  • the activation of the actuating device acting on the positioning device is controlled manually in the control center of a printing press by the operator or by a device for recording substrate thickness detection, which is coupled with the control station in terms of circuitry.
  • a sheet-guiding drum 1 is arranged downstream of a printing cylinder of the previous printing unit in an offset rotary printing press, and a printing cylinder of a further printing unit is arranged downstream of the drum 1.
  • the drum 1 is designed with a double-size printing cylinder and thus carries two gripper bridges 13. Both gripper bridges 13 are arranged symmetrically distributed around the circumference of the drum 1 (offset by 180 °).
  • Each gripper bridge 13 consists of a gripper shaft, grippers and gripper bar 2, which can be adjusted in approximately radial direction.
  • the gripper bar 2 carries supporting blocks for each gripper for the individual gripper bar.
  • the drum 1 is rotatably received with two drum journals in one bearing of a side frame 11.
  • Each gripper bar 2 is assigned a positioning device 3 which, depending on the substrate thickness, causes the gripper bar 2 to be raised or lowered.
  • the positioning device 3 is axially movably mounted on the drum body 1.
  • two positioning devices 3 are thus arranged, each of which is formed by a positioning rod 4 and a plurality of wedge-shaped elements 5 attached to it.
  • the wedge-shaped elements 5 of a positioning device 3 are assigned to several wedge-shaped elements of the gripper bar 2.
  • the wedge-shaped elements 5 and the wedge-shaped elements of the gripper bar 2 each form a sliding joint in the form of a push wedge.
  • Each wedge-shaped element 5 on the positioning rod 4 acts as a drive member
  • each wedge-shaped element 5 of the gripper bar 2 acts as an output member.
  • the gripper bar 2 is spring-loaded against the positioning device 3.
  • Adapters 12 are arranged at the free ends of the positioning rod 4.
  • An adapter 12 can for example be designed as a holder with a rotatable roller and has an adjustment option between the positioning rod 4.
  • the adapter 12 has a contact surface pointing in the direction of the side frame 11.
  • the actuating device 6 is a pneumatic working cylinder.
  • Each pneumatic actuation device 6 is coupled to an energy supply 8, here a pneumatic system.
  • the energy supply 8 is coupled to a control station 9 of a printing press, which is connected in terms of circuitry to a printing material thickness detection device 10.
  • the substrate thickness detection device 10 is arranged on the printing press in front of the first printing unit and can e.g. be integrated in a double sheet control device.
  • the design of the sheet-guiding drum 1 according to the invention is not limited to the automated adjustment of the gripper bar 2. Rather, the adjustment can be controlled manually starting from the control station 9 or the energy supply 8 or the actuating device 6.
  • a drum 1 takes over a printed sheet from the printing cylinder of an upstream printing unit and transfers this sheet to the printing cylinder of the downstream printing unit. If a substrate with a different thickness (thickness) is to be processed, it is necessary to set the gripper bars 2 higher or lower.
  • the energy supply 8 is activated manually or automatically via the control center 9.
  • the actuating device 6, here as a single-acting pneumatic working cylinder, is controlled with compressed air via a line system 7. This causes the piston of one actuator 6 to extend, the opposite actuator 6 is stopped by the return spring.
  • the pistons of the actuating devices 6 carry a working surface at their free end. In the present version, the work surface is provided with a chamfer.
  • the printing press is set in rotation at the control station 9 or manually at low speed at slow speed.
  • the run-up slope of the extended actuating device 6 comes into contact with the adapter 12 of the first positioning device 3 while the drum 1 rotates and adjusts the positioning device 3 in the axial direction the gripper bar 2 is moved radially. If an actuating device 6 is activated in each case, then the gripper bar 2 is only adjusted in two positions (high or low position). This is generally sufficient for paper and board processing. If adjustment is to be made individually, both actuating devices 6 are actuated with compressed air and each is given a defined stroke which, as an axial movement of the positioning rod 4, brings about a radial adjustment of the gripper bar 2.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Rotary Presses (AREA)
EP95112719A 1994-09-23 1995-08-11 Cylindre de transfert de feuilles pour machines d'impression rotatives Expired - Lifetime EP0705691B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4433998A DE4433998A1 (de) 1994-09-23 1994-09-23 Bogenführende Trommel für Rotationsdruckmaschinen
DE4433998 1994-09-23

Publications (2)

Publication Number Publication Date
EP0705691A1 true EP0705691A1 (fr) 1996-04-10
EP0705691B1 EP0705691B1 (fr) 1997-12-29

Family

ID=6529000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112719A Expired - Lifetime EP0705691B1 (fr) 1994-09-23 1995-08-11 Cylindre de transfert de feuilles pour machines d'impression rotatives

Country Status (5)

Country Link
US (1) US5732628A (fr)
EP (1) EP0705691B1 (fr)
JP (1) JP2866037B2 (fr)
AT (1) ATE161471T1 (fr)
DE (2) DE4433998A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642104C2 (de) * 1996-10-12 1998-09-10 Roland Man Druckmasch Anordnung zur dezentralen Einzelverstellung von Greiferaufschlagleisten in bogenführenden Trommeln bzw. Zylindern von Rotationsdruckmaschinen
DE19739571B4 (de) * 1996-12-17 2007-05-31 Heidelberger Druckmaschinen Ag Stellvorrichtung für eine Höhenverstellung von diametral gegenüberliegend angeordneten Greiferaufschlagleisten an bogenführenden Zylindern von Druckmaschinen
CN101301809B (zh) * 2007-05-11 2012-05-30 海德堡印刷机械股份公司 单张纸印刷机印刷装置之间的递纸辊
US20090035046A1 (en) * 2007-07-31 2009-02-05 Belbey Jason S Print drum
DE102012010886A1 (de) 2012-06-01 2013-12-05 Heidelberger Druckmaschinen Aktiengesellschaft Übertragungstrommel zum Fördern eines Bogens
DE102013008780A1 (de) * 2012-06-25 2014-01-02 Heidelberger Druckmaschinen Ag Übertragungstrommel zum Fördern eines Bogens

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57174262A (en) * 1981-04-21 1982-10-26 Komori Printing Mach Co Ltd Claw base vertical mover for sheet printer
JPS57174263A (en) * 1981-04-21 1982-10-26 Komori Printing Mach Co Ltd Claw base vertical mover for sheet printer
GB2098966A (en) 1981-04-21 1982-12-01 Komori Printing Mach Gripper pad height adjusting device for sheet-fed rotary printing presses
DE3428668A1 (de) 1984-08-03 1986-02-13 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Umfuehrtrommel fuer bogendruckmaschinen, insbesondere kartonmaschinen
DE3508699A1 (de) * 1985-03-12 1986-09-25 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Hoehenverstellbare greiferauflagen fuer wendetrommelgreifer in wendetrommeln von schoen- und widerdruckmaschinen
DE4233422C1 (de) * 1992-10-05 1994-01-13 Roland Man Druckmasch Bogengreifereinrichtung für Rotationsdruckmaschinen
EP0652105A1 (fr) * 1993-11-04 1995-05-10 MAN Roland Druckmaschinen AG Cylindre de transfert de feuilles pour machine à imprimer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE143149C (fr) * 1902-08-19 1903-08-14
CS149853B1 (fr) * 1971-05-20 1973-08-23
US3985074A (en) * 1972-05-23 1976-10-12 Roneo Vickers Limited Offset printing machines
DE3024758C2 (de) * 1980-06-30 1985-02-21 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogen-Offsetdruckmaschine für Schön- und Widerdruck
US5324023A (en) * 1993-05-24 1994-06-28 Eastman Kodak Company Apparatus for securing flexible sheet material to a rotatable drum surface

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57174262A (en) * 1981-04-21 1982-10-26 Komori Printing Mach Co Ltd Claw base vertical mover for sheet printer
JPS57174263A (en) * 1981-04-21 1982-10-26 Komori Printing Mach Co Ltd Claw base vertical mover for sheet printer
GB2098966A (en) 1981-04-21 1982-12-01 Komori Printing Mach Gripper pad height adjusting device for sheet-fed rotary printing presses
DE3428668A1 (de) 1984-08-03 1986-02-13 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Umfuehrtrommel fuer bogendruckmaschinen, insbesondere kartonmaschinen
DE3508699A1 (de) * 1985-03-12 1986-09-25 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Hoehenverstellbare greiferauflagen fuer wendetrommelgreifer in wendetrommeln von schoen- und widerdruckmaschinen
DE4233422C1 (de) * 1992-10-05 1994-01-13 Roland Man Druckmasch Bogengreifereinrichtung für Rotationsdruckmaschinen
EP0652105A1 (fr) * 1993-11-04 1995-05-10 MAN Roland Druckmaschinen AG Cylindre de transfert de feuilles pour machine à imprimer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 20 (M - 188) 26 January 1983 (1983-01-26) *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 20 (M - 188) 26 October 1983 (1983-10-26) *

Also Published As

Publication number Publication date
DE59501160D1 (de) 1998-02-05
ATE161471T1 (de) 1998-01-15
EP0705691B1 (fr) 1997-12-29
JPH08108521A (ja) 1996-04-30
JP2866037B2 (ja) 1999-03-08
US5732628A (en) 1998-03-31
DE4433998A1 (de) 1996-04-04

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