EP0703074A2 - Cylindre de transfer de feuilles pour machine à imprimer - Google Patents

Cylindre de transfer de feuilles pour machine à imprimer Download PDF

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Publication number
EP0703074A2
EP0703074A2 EP95112721A EP95112721A EP0703074A2 EP 0703074 A2 EP0703074 A2 EP 0703074A2 EP 95112721 A EP95112721 A EP 95112721A EP 95112721 A EP95112721 A EP 95112721A EP 0703074 A2 EP0703074 A2 EP 0703074A2
Authority
EP
European Patent Office
Prior art keywords
gripper
positioning
bar
gripper bar
guiding drum
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
EP95112721A
Other languages
German (de)
English (en)
Other versions
EP0703074B1 (fr
EP0703074A3 (fr
Inventor
Dietrich Dettinger
Roland Höll
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6529002&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0703074(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0703074A2 publication Critical patent/EP0703074A2/fr
Publication of EP0703074A3 publication Critical patent/EP0703074A3/fr
Application granted granted Critical
Publication of EP0703074B1 publication Critical patent/EP0703074B1/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 overall, positioning means adjusting the gripper pads act on these means and are actuated by a central adjusting device.
  • 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 (raising and lowering) the gripper support of a gripper bridge of a sheet guiding cylinder is known.
  • the positioning of the gripper pads is carried out by means of an adjusting rod, which is arranged in the cylinder axial direction against spring force by means of a screw and is arranged under a gripper pad extending over the entire cylinder length.
  • 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 brings about the radial positioning of the gripper supports (set higher or lower).
  • 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 to enable an exact adjustment of all gripper bar.
  • a separate adjustment of the gripper bar for example to avoid inaccuracies in the sheet transfer or transfer between sheet-guiding cylinders or in the event of an unintentional gripper bar adjustment, is not possible.
  • An individual adjustment of each gripper bar is only possible manually by loosening the locked adjustment means.
  • the object of the invention is to make a separate adjustment (up or down) of all the gripper bridges of the sheet-guiding drum to the printing material thickness to be processed and to compensate for possible inaccuracies in the sheet transfer / sheet transfer.
  • 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 separate adjustment of the gripper pads of a sheet-guiding drum shortens the changeover time and minimizes subjective influences and eliminates inaccuracies when transferring or taking over sheets.
  • the invention represents an economical, automatable solution.
  • the installation position of the actuating device is flush with the positioning device on the drum body, such that there is no collision with the adjacent side frames. Each actuating device is controlled separately from the respective energy supply, in particular in succession.
  • a sheet-guiding drum 1 is arranged downstream of a printing cylinder of the preceding 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, based on a simple pressure cylinder, is designed with a diameter twice the size and thus carries two gripper bridges 12.
  • the two gripper bridges 12 are arranged symmetrically distributed (offset by 180 °).
  • Each gripper bridge 12 consists of a gripper shaft, grippers and gripper bar 2 which can be adjusted in approximately radial direction.
  • the gripper bar 2 carries support 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 movable 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 impact bar 2 each form a sliding joint in the form of a push wedge.
  • Each wedge-shaped element 5 arranged on the positioning rod 4 acts as a drive member, each wedge-shaped element of the gripper bar 2 acts as an output member.
  • the gripper bar 2 is spring-loaded against the positioning device 3.
  • An actuating device 7, in the present example a pneumatic cylinder, is arranged on the drum body 1 at a free end of each positioning device 3.
  • the actuating device 7 is coupled to the positioning rod 4 and is connected via a line system 8 to a rotary transducer 9 arranged on the drum journal.
  • the rotary transformer 9 is connected to a power supply 10, which controls each actuating device 7 separately.
  • the controlled compressed air supply takes place via a valve block.
  • Each positioning device 3 is limited in its axial stroke by adjustable stops 6.
  • each gripper bar 2 can be operated in two stages by the positioning device 3. The first stage (raising the gripper bar 2) is suitable for paper. The second stage (lowering the gripper bar 2) is suitable for cardboard.
  • the mode of action is as follows:
  • the drum 1 accepts a printed sheet from a printing cylinder of an upstream printing unit and transfers the sheet to the printing cylinder of the downstream printing unit. If a substrate with a changed thickness (thickness) is to be processed, it is necessary to set the gripper bar 2 higher or lower.
  • the energy supply 10 is activated manually or automatically, for example from a control center.
  • Each actuating device 7, here the pneumatic cylinder is controlled individually with compressed air in succession on the gripper bridge 12 in question. This causes the piston of the pneumatic cylinder to move the coupled positioning rod 4 axially up to the stop (first stage). The axial movement of the positioning rod 4 brings about the radial adjustment of the gripper bar 2 within two stages.
  • the adjustment in two stages has proven to be sufficient. For example, a distance between the upper edges of the gripper bars of a drum 1 and the adjacent printing cylinder is favorable for paper of approximately 0.2 mm and for cardboard of approximately 0.7 mm.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Rotary Presses (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Laminated Bodies (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP95112721A 1994-09-23 1995-08-11 Cylindre de transfer de feuilles pour machine à imprimer Expired - Lifetime EP0703074B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434000 1994-09-23
DE4434000A DE4434000C2 (de) 1994-09-23 1994-09-23 Bogenführende Trommel für Rotationsdruckmaschinen

Publications (3)

Publication Number Publication Date
EP0703074A2 true EP0703074A2 (fr) 1996-03-27
EP0703074A3 EP0703074A3 (fr) 1997-01-22
EP0703074B1 EP0703074B1 (fr) 1998-06-10

Family

ID=6529002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112721A Expired - Lifetime EP0703074B1 (fr) 1994-09-23 1995-08-11 Cylindre de transfer de feuilles pour machine à imprimer

Country Status (5)

Country Link
US (1) US5609105A (fr)
EP (1) EP0703074B1 (fr)
JP (1) JP2921657B2 (fr)
AT (1) ATE167113T1 (fr)
DE (2) DE4434000C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835754A3 (fr) * 1996-10-12 1998-12-16 MAN Roland Druckmaschinen AG Réglage décentralisé individuel des surfaces d'appui des pinces dans les cylindres de transport de feuilles des presses rotatives

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3535621A1 (de) * 1985-10-05 1987-04-09 Heidelberger Druckmasch Ag Bogenuebergabetrommel
DD248319A1 (de) * 1986-04-21 1987-08-05 Polygraph Leipzig Saugersteuerungen in bogenfuehrungszylindern
DE3721900A1 (de) * 1987-07-02 1989-01-19 Heidelberger Druckmasch Ag Fernbedienbare stellmittel zur elastischen verformung einer registerschiene
DE4004352C1 (fr) * 1990-02-13 1991-06-06 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE4200406C2 (de) * 1992-01-10 1996-10-10 Heidelberger Druckmasch Ag Greifereinrichtung an bogenverarbeitenden Rotationsdruckmaschinen
DE4221929C2 (de) * 1992-07-03 1997-11-20 Heidelberger Druckmasch Ag Greifersteuerung für Bogengreifer an einem bogenführenden Zylinder oder dergleichen in einer Druckmaschine
DE4308595A1 (de) * 1993-03-18 1994-09-22 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zum Verringern von Bogennachlauf am Gummizylinder einer Offsetdruckmaschine
DE4337578A1 (de) * 1993-11-04 1995-05-11 Roland Man Druckmasch Bogenführende Trommel für Druchmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835754A3 (fr) * 1996-10-12 1998-12-16 MAN Roland Druckmaschinen AG Réglage décentralisé individuel des surfaces d'appui des pinces dans les cylindres de transport de feuilles des presses rotatives

Also Published As

Publication number Publication date
ATE167113T1 (de) 1998-06-15
EP0703074B1 (fr) 1998-06-10
JP2921657B2 (ja) 1999-07-19
DE4434000A1 (de) 1996-03-28
US5609105A (en) 1997-03-11
DE4434000C2 (de) 1998-02-26
JPH08108522A (ja) 1996-04-30
DE59502478D1 (de) 1998-07-16
EP0703074A3 (fr) 1997-01-22

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