EP0981446B1 - Compensation de l'inclinaison de feuilles dans une machine d'impression a unite de formation d'image - Google Patents

Compensation de l'inclinaison de feuilles dans une machine d'impression a unite de formation d'image Download PDF

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Publication number
EP0981446B1
EP0981446B1 EP98933538A EP98933538A EP0981446B1 EP 0981446 B1 EP0981446 B1 EP 0981446B1 EP 98933538 A EP98933538 A EP 98933538A EP 98933538 A EP98933538 A EP 98933538A EP 0981446 B1 EP0981446 B1 EP 0981446B1
Authority
EP
European Patent Office
Prior art keywords
printing
cylinder
sheet
printing machine
feed line
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
EP98933538A
Other languages
German (de)
English (en)
Other versions
EP0981446A1 (fr
Inventor
Arndt Jentzsch
Reinhard Nerger
Victor Hefftler
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.)
KBA Planeta AG
Original Assignee
KBA Planeta 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 KBA Planeta AG filed Critical KBA Planeta AG
Publication of EP0981446A1 publication Critical patent/EP0981446A1/fr
Application granted granted Critical
Publication of EP0981446B1 publication Critical patent/EP0981446B1/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
    • B41F21/12—Adjusting leading edges, e.g. front stops
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/10—Rotary lithographic machines for offset printing using one impression cylinder co-operating with several transfer cylinders for printing on sheets or webs, e.g. satellite-printing units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/70—Forming the printing surface directly on the form cylinder

Definitions

  • the invention relates to skew compensation for sheets in a printing press with an imaging device for writing at least one arranged on a printing form cylinder Printing form.
  • Two revolutions of the printing cylinder are required to produce a multi-color print, with only one sheet being fed to every second printing saddle. Furthermore, a printed sheet is only removed from every second printing saddle
  • WO 97/02143 A2 describes a multicolor printing machine with an imaging device known in a compact design.
  • This press has two form and Rubber cylinders with at least two printing surfaces each, with a central one Printing cylinder, which has a printing surface more than one forme cylinder, cooperates
  • Multi-color printing machines are also known in which the contact drum for correction of system errors is equipped with a diagonal and circumferential register adjustment (US 4922819).
  • the object of the invention is to create an imaging device that includes an imaging device Printing machine with cost-effective tilt compensation.
  • the printing form cylinder 2 is equipped with two active surfaces 4, each of which carries a printing form 3.
  • the printing form cylinder 3 are also assigned two inking / dampening units 5 which can be switched on and off in alternating fashion.
  • the printing form cylinder 3 is operatively connected indirectly via an offset cylinder 9 with two surfaces or directly (not shown) with a printing cylinder 6.
  • the printing cylinder 6 has three printing surfaces 7 and accordingly three gripper rows 8 for gripping sheets 10 to be printed.
  • the printing cylinder 6 is assigned a second formation of offset cylinder, printing forme cylinder, inking / dampening unit and imaging device, not identified by reference numerals
  • 11 feed elements 12 are arranged above the feeder sheet stack.
  • a feed mechanism 14 is provided for feeding the sheets to be printed from the contact line 13 to the impression cylinder 6.
  • the printing cylinder 6 are two transfer drums 15 for sheet removal; 16 and a delivery chain circle 17 arranged below the delivery chain circle 17 is a delivery sheet stack 21.
  • the first transfer drum 15 is designed as a cocking drum and has the task of compensating for skew register errors.
  • the cocking drum is rotatably mounted on one side in the machine frame; on the other hand, the cocking drum is rotatable and vertically movable, for example in an eccentric bearing. This bearing arrangement and its function is generally known, for example from DE 3400652 A1, so that a detailed description of the design can be dispensed with.
  • the mode of operation of the solution according to the invention is described with reference to FIG. 2. 2, the cylinder pressure cylinder 6 shown; Offset cylinder 9 and first transfer drum 15 designed as a cocking drum - drawn in a rotated position for better understanding
  • the feeder sheet stack 11 is arranged transversely to the longitudinal axis 18 of the printing press, which runs transversely to the axial direction of the printing cylinder, ie the front edge 20 of the sheet 10 resting on the feeder sheet stack 11 is arranged at an angle of 90 ° to the longitudinal axis 18 of the printing press
  • the sheet 10 separated by the feeder sheet stack 11 is conveyed by means of the elements for conveying 12 to the contact line 13 of the printing press.
  • the contact line 13 is arranged obliquely with respect to the longitudinal axis 18 of the printing press, so that the sheet 10 to be printed and assigned to the contact line 13 is also arranged obliquely to the longitudinal axis 18.
  • the dimension of the inclined position is marked with x; with a width of the arch 10 of 740 mm, this dimension is 0.3 mm.
  • the inclined position can of course also be related to the transverse axis arranged at an angle of 90 ° to the longitudinal axis of the printing press, which corresponds to the axial direction of the printing cylinder. In this inclined position, the sheet 10 is transferred from the feed mechanism 14 to one of the gripper rows 8 of the printing cylinder 6, transported and provided with the printed image 19 in cooperation with the offset cylinder 9.
  • the printed image 19 is applied by means of the imaging device 1 to the printing form 3 clamped on the printing form cylinder 2.
  • the printing form cylinder 2 rotates and the imaging device 1 traverses, that is to say the printed image is applied undistorted line by line and thus in an inclined position relative to the longitudinal axis 18 of the printing machine is dependent on the resolution implemented by the imaging device 1.
  • a resolution of, for example, 100 lines per mm and a width of the printed image of 740 mm this results in an inclination of 0.3 mm to the longitudinal axis of the printing press.
  • the oblique print image 19 is colored by the inking / dampening unit 5 and transferred to the offset cylinder 9.
  • This phase of the transmission is shown in dashed lines in FIG .
  • the print image 19 located on the offset cylinder 9 at an angle to the longitudinal axis 18 of the printing press is transferred to the sheet 10, which is also at an angle to the longitudinal axis 18 of the printing press, through one of the gripper rows 8 of the printing cylinder 6. Since both inclined positions - printed image and sheet - are the same, the printed image is applied to the sheet in the normal position (dash-dotted lines in FIG. 2). The normal position is understood to mean that the boundary edges of the printed image and the boundary edges of the sheet run parallel.
  • the sheet 10 is transferred in an inclined position to one of the gripper rows of the first transfer drum 15 designed as a cocking drum.
  • the printed sheet is brought into the normal position relative to the longitudinal axis 18 of the printing press, ie the inclined position is compensated.
  • the transfer of the sheet in the normal position to the second transfer drum 16, the transfer to the delivery chain circle 17 and the sheet placement on the delivery sheet stack 21 are each carried out in the normal position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (2)

  1. Machine d'impression comprenant :
    un margeur de feuilles,
    des éléments pour transférer une feuille à imprimer vers une ligne de marge (13),
    des mécaniques d'alimentation pour transférer des feuilles de la ligne de marge (13) à un cylindre d'impression (6),
    au moins un groupe de cylindres formés d'un cylindre offset (7, 9) et d'un cylindre porte-plaque (2), coopérant avec le cylindre d'impression (6),
    une installation (1) montée transversalement au cylindre porte-plaque (2) pour inscrire sur une plaque d'impression (3) installée sur le cylindre porte-plaque (2), l'image d'impression (9) réalisée sur la plaque d'impression étant positionnée en fonction de la résolution de l'installation transversale (1) en biais par rapport à l'axe longitudinal (19) de la machine d'impression,
    une sortie de feuilles comportant un convoyeur à chaíne (17),
    caractérisée en ce que
    la ligne de marge (13) est disposée en biais par rapport à l'axe longitudinal (18) de la machine d'impression, cette position en biais de la ligne (13) correspondant à la position en biais de l'image d'impression (19),
    la sortie de feuilles comporte deux tambours de transfert (15, 16) en aval du cylindre d'impression (6) et en amont du convoyeur à chaíne (17),
    l'un des tambours de transfert comportant un dispositif de dégauchissage pour compenser la position en biais de la feuille imprimée (10) par rapport à l'axe longitudinal (18) de la machine par une mise en biais de l'axe du tambour de transfert (15).
  2. Machine d'impression selon la revendication 1,
    caractérisée en ce que
    la ligne de marge (13) est réglable en biais en fonction de la résolution réalisée par l'installation d'inscription (1).
EP98933538A 1997-05-17 1998-05-14 Compensation de l'inclinaison de feuilles dans une machine d'impression a unite de formation d'image Expired - Lifetime EP0981446B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19720741 1997-05-17
DE19720741A DE19720741C2 (de) 1997-05-17 1997-05-17 Druckmaschine
PCT/DE1998/001350 WO1998052758A1 (fr) 1997-05-17 1998-05-14 Compensation de l'inclinaison de feuilles dans une machine d'impression a unite de formation d'image

Publications (2)

Publication Number Publication Date
EP0981446A1 EP0981446A1 (fr) 2000-03-01
EP0981446B1 true EP0981446B1 (fr) 2002-07-31

Family

ID=7829769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98933538A Expired - Lifetime EP0981446B1 (fr) 1997-05-17 1998-05-14 Compensation de l'inclinaison de feuilles dans une machine d'impression a unite de formation d'image

Country Status (3)

Country Link
EP (1) EP0981446B1 (fr)
DE (2) DE19720741C2 (fr)
WO (1) WO1998052758A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10111070A1 (de) * 2000-04-03 2001-10-04 Heidelberger Druckmasch Ag Bogendruckmaschine und Verfahren zum Betreiben einer Bogendruckmaschine
DE10119140A1 (de) 2000-05-17 2001-11-22 Heidelberger Druckmasch Ag Bedruckstoffbögen verarbeitende Maschine
DE102008023385A1 (de) 2007-05-23 2008-11-27 Heidelberger Druckmaschinen Ag Verwendung einer Druckmaschine mit einem Druckwerk und einem Bogenanleger
EP2749416B1 (fr) * 2012-12-28 2020-01-22 Komori Corporation Presse d'impression en creux

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219116A1 (de) * 1992-06-12 1993-12-16 Roland Man Druckmasch Bogenrotationsdruckmaschine für Mehrfarbendruck

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE465246C (de) * 1928-09-12 Albert Schnellpressen Verfahren zum Erzielen eines guten Registers bei Druckmaschinen mit mehreren Druckwerken
DE390336C (de) * 1924-02-18 Anglo American Inv S Syndicate Vorrichtung zur Herstellung uebereinstimmender Drucke auf Mehrfarben-Rotationsdruckmaschinen
DE1235953B (de) * 1965-03-17 1967-03-09 Koenig & Bauer Schnellpressfab Bogen-Offset-Rotationsdruckmaschine fuer wahlweisen Schoen- und Widerdruck oder Schoendruck
JPS5632108B2 (fr) * 1973-08-10 1981-07-25
DE3233021A1 (de) * 1982-09-06 1984-03-08 Rotaprint Gmbh, 1000 Berlin Offset-drucker als vervielfaeltiger
DE3400652C2 (de) * 1984-01-11 1993-11-11 Heidelberger Druckmasch Ag Schrägregisterverstellung für Bogen in Mehrfarbendruckmaschinen
JPH0696284B2 (ja) * 1987-11-09 1994-11-30 リョービ株式会社 天地方向調整装置を有する枚葉印刷機
DE4013003C3 (de) * 1990-04-24 2001-10-11 Roland Man Druckmasch Korrektur schrägliegender Druckbilder in einer Mehrfarbenbogendruckmaschine
US5469787A (en) * 1994-03-15 1995-11-28 Heath Custom Press, Inc. Multi-color printing press
DE19523378A1 (de) * 1995-06-30 1997-01-02 Koenig & Bauer Albert Ag Bogenoffsetrotationsdruckmaschine
DE29516830U1 (de) * 1995-10-25 1995-12-07 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Digitale Druckmaschine mit Registerregelung
DE19545113A1 (de) * 1995-12-04 1997-06-05 Heidelberger Druckmasch Ag Digitale Druckmaschine und Verfahren zum Bogentransport dafür

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219116A1 (de) * 1992-06-12 1993-12-16 Roland Man Druckmasch Bogenrotationsdruckmaschine für Mehrfarbendruck

Also Published As

Publication number Publication date
DE19720741A1 (de) 1998-11-19
WO1998052758A1 (fr) 1998-11-26
DE59805009D1 (de) 2002-09-05
EP0981446A1 (fr) 2000-03-01
DE19720741C2 (de) 2001-01-04

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