EP0452721B1 - Contrôle de ventouses dans les tambours de transfert de feuille pour machines rotatives d'impression à feuilles multicolores - Google Patents

Contrôle de ventouses dans les tambours de transfert de feuille pour machines rotatives d'impression à feuilles multicolores Download PDF

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Publication number
EP0452721B1
EP0452721B1 EP91104970A EP91104970A EP0452721B1 EP 0452721 B1 EP0452721 B1 EP 0452721B1 EP 91104970 A EP91104970 A EP 91104970A EP 91104970 A EP91104970 A EP 91104970A EP 0452721 B1 EP0452721 B1 EP 0452721B1
Authority
EP
European Patent Office
Prior art keywords
sheet
suction
control
transfer
cam
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
EP91104970A
Other languages
German (de)
English (en)
Other versions
EP0452721A2 (fr
EP0452721A3 (en
Inventor
Ingo Köbler
Josef Mathes
Robert Ortner
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
Priority to AT9191104970T priority Critical patent/ATE105237T1/de
Publication of EP0452721A2 publication Critical patent/EP0452721A2/fr
Publication of EP0452721A3 publication Critical patent/EP0452721A3/de
Application granted granted Critical
Publication of EP0452721B1 publication Critical patent/EP0452721B1/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
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
    • B41F21/108—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine with pneumatic means

Definitions

  • the invention relates to a suction control in sheet transfer drums in multi-color sheet-fed rotary printing presses for turning the sheet according to the principle of turning the trailing edge when transferring the sheet from one printing unit to another in order to print on the back of the sheet, according to the preamble of the first claim.
  • Suction control according to the generic term is e.g. known from DE-A-3829626.
  • the object of the invention is to improve the suction control of the type specified at the outset in such a way that it becomes possible to reduce shocks when the sheet is taken over from the impression cylinder and when the sheet is transferred to the first gripper system and at the same time drive the vibrating suction system in the direction of movement to influence.
  • the invention makes it possible to remove the sheet exactly from the upstream printing cylinder by means of a pivotable suction system and to transfer it exactly to the first mechanical gripper system of the sheet transfer drum, the guide rollers of the pivotable suction system being held non-positively on their control curve.
  • Fig. 1 shows the sheet transfer drum 18 and the upstream printing cylinder 17 during the phase of the transfer of the sheet by means of the pivotable suction system from the upstream printing cylinder 17.
  • the position of the suction cups 3 of the suction system during the transfer to the first gripper system 4 is shown in broken lines.
  • the first gripper system 4 transfers to the second gripper system 5 in a known manner.
  • the suction cups 3 and the control lever 6 are firmly connected to the hollow suction oscillation shaft 2.
  • the control lever 6 has two guide rollers 20.1 and 20.2, which roll on a control cam 7, which is provided on guide rails 19.
  • the Guide rails 19 are fixedly connected to a holder 8 which is fastened to the drum body 9.
  • the suction system is driven by a cam 13 which is attached to the machine stand.
  • the cam roller of a roller lever 12 rolls on the cam of the cam disc 13, which is firmly connected to the end of the drive shaft 1.
  • a drive lever 11 is fixedly connected to the drive shaft 1, which is articulated via a tab 10 to an arm of the control lever 6.
  • Both the drive lever 11 and the guide rail 19 with holder 8 are provided on both sides of the sheet transfer drum 18 and also between the sides of the drum body 9. With a spring 14, the cam roller of the roller lever 12 is held on the curve of the cam 13 via the drive lever 11 and the drive shaft 1.
  • the control curve 7 has curve sections with a motion law which makes it possible to move the suction surfaces of the suction devices 3 of the suction system which are fastened to the hollow suction oscillating shaft 2 on a path which is shown as a detail in FIG. 3.
  • the suction cups 3 grasp the rear edge of the sheet on the periphery of the upstream printing cylinder 17 and, with an extended distance on this periphery, initially move at the printing cylinder speed.
  • suckers 3 of the suction system are controlled before the tangent point between the sheet transfer drum 18 and the printing cylinder 17 below the periphery of the sheet transfer drum 18, the sheet being peeled off by the printing cylinder 17 because it is kept taut by the suckers 3 on an involute path in motion Coordinate system is guided.
  • suckers 3 of the suction system transfer to the first gripper system 4 without the deflection angle between the suction surfaces of the suction devices 3 and the arc changing, i.e. it remains approximately zero.
  • the compression spring 15 is tensioned in the phase of taking over the sheet from the pressure cylinder 17, while the compression spring 16 is relaxed.
  • impacts on the pressure cylinder are prevented by the suction system, and at the same time the compression spring 15 supports the acceleration of the suction system in the direction of movement.
  • the two compression springs 15, 16 are equally tensioned approximately halfway through the swinging suction system.
  • the moving suction system is in a phase in which the acceleration is reversed. In this phase, the spring forces of the compression springs 15, 16 cause neither acceleration nor deceleration.
  • the compression spring 15 is relaxed in the phase of transferring the sheet from the suction system to the first gripper system 4, while the compression spring 16 is tensioned.
  • a smooth impact of the suction system against the stops (not shown) for fixing the trailing edge of the sheet for transfer to the first gripper system 4 is achieved by braking the movement, in which the compression spring 16 supports the braking of the suction system.
  • the cushioned sequence of movements is reversed accordingly to the takeover position.
  • the compression springs 15, 16 are each guided on spring rods which have spring supports which are articulated or supported at one end on the control lever 6 or at the other end on the drum body 9.
  • the first gripper system 4 transfers to a second gripper system 5, not shown in the drawing, and from there to the gripper system of the subsequent pressure cylinder, not shown.
  • This type of turn is known and is shown in DE-PS 1 786 371 and described in detail.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (2)

  1. Commande d'aspiration dans des tambours de transfert de feuilles dans des machines d'impression rotatives à feuilles en plusieurs couleurs, pour tourner la feuille selon le principe du retournement du bord arrière, lors du transport d'une unité d'impression à l'autre dans le but d'imprimer le verso de la feuille, comportant un système d'aspiration pour recevoir la feuille et pour la transférer à un premier (4) de deux systèmes de pinces oscillants l'un par rapport à l'autre et pour transférer la feuille du second système de pinces (5) à un système de pinces du cylindre suivant, les dispositifs d'aspiration (3) du système d'aspiration étant solidaires d'un premier arbre oscillant creux (2) et celui-ci de leviers de commande (6) qui portent des rouleaux de guidage (20.1, 20.2) et, sur le tambour de transfert de feuilles (18), étant prévus des rails de guidage (19) présentant une came de commande (7), sur laquelle roulent les rouleaux de guidage (20.1, 20.2) et, pour l'entraînement de l'arbre oscillant creux (2), un mécanisme à came (1, 10, 11, 12, 13) étant prévu, qui est couplé à un levier d'entraînement (11) fixé sur l'arbre oscillant creux (2), de façon relativement mobile, par l'intermédiaire d'une patte de liaison,
    caractérisée en ce que les leviers de commande (6) présentent deux rouleaux de guidage (20.1, 20.2) qui roulent sur une came de commande externe (7), qui est prévue sur les rails de guidage (19), et en ce que, sur les leviers de commande (6), sont articulés, à une extrémité, deux ressorts de pression (15, 16) agencés à peu près perpendiculairement l'un à l'autre et orientés du bas vers l'axe de l'arbre oscillant creux (2), ressorts qui s'appuient, par leur autre extrémité, dans le corps (9) du tambour de transfert de feuilles (18).
  2. Commande d'aspiration selon la revendication 1, caractérisée en ce que les rails de guidage (19) et les leviers d'entraînement (11) du mécanisme à came (1, 10, 11, 12, 13) sont prévus des deux côtés du tambour de transfert de feuilles (18) ou également entre ses côtés.
EP91104970A 1990-04-19 1991-03-28 Contrôle de ventouses dans les tambours de transfert de feuille pour machines rotatives d'impression à feuilles multicolores Expired - Lifetime EP0452721B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9191104970T ATE105237T1 (de) 1990-04-19 1991-03-28 Saugersteuerung in bogenuebergabetrommeln in mehrfarben-bogenrotationsdruckmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012497A DE4012497A1 (de) 1990-04-19 1990-04-19 Saugersteuerung in bogenuebergabetrommeln in mehrfarben-bogendruckmaschinen
DE4012497 1990-04-19

Publications (3)

Publication Number Publication Date
EP0452721A2 EP0452721A2 (fr) 1991-10-23
EP0452721A3 EP0452721A3 (en) 1992-02-12
EP0452721B1 true EP0452721B1 (fr) 1994-05-04

Family

ID=6404670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104970A Expired - Lifetime EP0452721B1 (fr) 1990-04-19 1991-03-28 Contrôle de ventouses dans les tambours de transfert de feuille pour machines rotatives d'impression à feuilles multicolores

Country Status (6)

Country Link
US (1) US5142983A (fr)
EP (1) EP0452721B1 (fr)
JP (1) JPH0751352B2 (fr)
AT (1) ATE105237T1 (fr)
DE (2) DE4012497A1 (fr)
ES (1) ES2053228T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744507A1 (de) * 1997-10-09 1999-04-15 Roland Man Druckmasch Steuereinrichtung für ein Bogentransportsystem in einer Bogenrotationsdruckmaschine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139667C2 (de) * 1991-12-02 1997-02-06 Kba Planeta Ag Antrieb für ein Schwingsystem in einem Bogenführungszylinder einer Bogenrotationsdruckmaschine
DE4330392A1 (de) * 1993-09-08 1995-03-16 Heidelberger Druckmasch Ag Schwingender Vorgreifer einer Bogendruckmaschine
DE4336047A1 (de) * 1993-10-22 1995-04-27 Heidelberger Druckmasch Ag Rotations-Bogendruckmaschine für Schön- und Widerdruck mit einem als Speichertrommel wirksamen Druckzylinder doppelt großen Durchmessers
DE19833903A1 (de) 1998-07-28 2000-02-03 Heidelberger Druckmasch Ag Verfahren zur Übernahme einer Bogenhinterkante von einem vorgeordneten Zylinder einer Bogenrotationsdruckmaschine
DE202005005682U1 (de) 2005-04-11 2005-06-16 Man Roland Druckmaschinen Ag Abnahmesauger für eine Wendetrommel
US8302955B2 (en) * 2005-06-17 2012-11-06 Hewlett-Packard Development Company, L.P. Rotating vacuum fingers for removal of printing media from an impression drum

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2080249A (en) * 1936-04-22 1937-05-11 Cottrell C B & Sons Co Gripper mechanism for printing presses
DE1005981B (de) * 1955-03-21 1957-04-11 Roland Offsetmaschf Greifervorrichtung fuer Bogen verarbeitende Maschinen, insbesondere Druckmaschinen
US3537391A (en) * 1967-10-18 1970-11-03 Miller Printing Machinery Co Sheet handling apparatus and method for multicolor perfector press
CS156913B1 (fr) * 1972-05-15 1974-08-23
DD110452A1 (fr) * 1974-03-21 1974-12-20
US3992993A (en) * 1975-03-25 1976-11-23 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Sheet transfer system for a printing machine
US4029009A (en) * 1975-07-17 1977-06-14 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Printing machine construction
US4132403A (en) * 1977-07-07 1979-01-02 Veb Polygraph Leipzig Kombinat Fuer Polygraphische Maschinen Und Ausruestungen Sheet transfer apparatus for printing machine
GB2050312B (en) * 1979-05-29 1983-05-18 Metal Box Co Ltd Gripping mechanism for printing machine
DE3036790C2 (de) * 1980-09-30 1982-11-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenübergabetrommel für auf Schön- und Widerdruck umstellbare Bogenrotationsdruckmaschinen
DD158377A1 (de) * 1981-04-16 1983-01-12 Gunter Peter Steuerung von schwingsystemen in wendetrommeln
JPS591260A (ja) * 1982-06-14 1984-01-06 Komori Printing Mach Co Ltd 反転機構付枚葉輪転印刷機
DE3529656A1 (de) * 1985-08-19 1987-02-26 Roland Man Druckmasch Federnder greifer fuer bogenrotationsdruckmaschinen
DE3608470A1 (de) * 1986-03-14 1987-09-24 Heidelberger Druckmasch Ag Umfuehrtrommel fuer den bogentransport in einer druckmaschine
DD248320B5 (de) * 1986-04-21 1994-01-13 Kba Planeta Ag Saugersystem in bogenfuehrungszylindern
DD248319A1 (de) * 1986-04-21 1987-08-05 Polygraph Leipzig Saugersteuerungen in bogenfuehrungszylindern
DD248321A1 (de) * 1986-04-21 1987-08-05 Polygraph Leipzig Sauger in wendetrommeln von druckmaschinen
EP0278992B2 (fr) * 1987-02-16 1994-01-19 Komori Corporation Unité de retournement de feuille pour presse à imprimer des feuilles
DD258211A1 (de) * 1987-03-02 1988-07-13 Polygraph Leipzig Einrichtung zum steuern der greifer eines vorgreifers in bogenverarbeitenden maschinen
DD275034A1 (de) * 1988-08-29 1990-01-10 Polygraph Leipzig Vorrichtung zum foerdern und oeffnen von falzbogen
DE3829626A1 (de) * 1988-09-01 1990-03-15 Roland Man Druckmasch Bogen-rotationsdruckmaschine fuer schoen- und widerdruck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744507A1 (de) * 1997-10-09 1999-04-15 Roland Man Druckmasch Steuereinrichtung für ein Bogentransportsystem in einer Bogenrotationsdruckmaschine
DE19744507C2 (de) * 1997-10-09 2001-03-29 Roland Man Druckmasch Steuereinrichtung für ein Bogentransportsystem in einer Bogenrotationsdruckmaschine

Also Published As

Publication number Publication date
ES2053228T3 (es) 1994-07-16
JPH04224948A (ja) 1992-08-14
EP0452721A2 (fr) 1991-10-23
EP0452721A3 (en) 1992-02-12
DE4012497A1 (de) 1991-10-24
DE59101540D1 (de) 1994-06-09
JPH0751352B2 (ja) 1995-06-05
ATE105237T1 (de) 1994-05-15
US5142983A (en) 1992-09-01
DE4012497C2 (fr) 1993-02-11

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