EP0704398A2 - Dispositif de correction du repérage et de compensation de feuilles déformées dans le margeur d'une machine d'impression de feuilles - Google Patents

Dispositif de correction du repérage et de compensation de feuilles déformées dans le margeur d'une machine d'impression de feuilles Download PDF

Info

Publication number
EP0704398A2
EP0704398A2 EP95113668A EP95113668A EP0704398A2 EP 0704398 A2 EP0704398 A2 EP 0704398A2 EP 95113668 A EP95113668 A EP 95113668A EP 95113668 A EP95113668 A EP 95113668A EP 0704398 A2 EP0704398 A2 EP 0704398A2
Authority
EP
European Patent Office
Prior art keywords
gripper
eccentric
bridge
curve
axis
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.)
Withdrawn
Application number
EP95113668A
Other languages
German (de)
English (en)
Other versions
EP0704398A3 (fr
Inventor
Andreas Dr. Fricke
Heiner Luxem
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0704398A2 publication Critical patent/EP0704398A2/fr
Publication of EP0704398A3 publication Critical patent/EP0704398A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position

Definitions

  • the invention relates to a device for register correction and to compensate for tensioned sheets on the pre-gripper in the feeder of a sheet-fed rotary printing press according to the preamble of claim 1.
  • the curve is located on a ring enclosing the pre-gripper shaft and can be adjusted in its angular position by an actuator, so that the cam roller during the swiveling movement of the pre-gripper before reaching the end position in which the sheet grippers grip the bow at its front edge, depending on the setting of the curve sooner or later and less or more runs onto the curve and the gripper bridge experiences a deflection in the middle in the direction of the sheet transport.
  • the bend is deformed in the middle towards the ends in order to correct the register or to equalize the tension.
  • the deflection of the cam roller is smaller than the desired deflection of the gripper bridge, so that the force emanating from the curve and the cam roller must be greater than the force required to deform the gripper bridge. This increases the sensitivity of the system to dynamic ones Influences and requires a very sensitive adjustment mechanism.
  • the invention has for its object to provide a device for register correction and to compensate for tensioned sheets in the feeder of a sheet-fed rotary printing press with the features mentioned above in terms of their sensitivity to dynamic influences more cheaply and in a simple manner while the machine is running.
  • the invention solves this problem by training features according to the characterizing part of patent claim 1.
  • this design has the advantage that a comparatively large deflection of the cam roller attached to the eccentric with a lever arm causes a relatively small deformation of the carrier of the gripper bridge and thus of the gripper bridge itself.
  • This ratio of forces enables the shear force required to deform the gripper bridge to be reduced.
  • the required roller force compared to the transverse force is considerably smaller than in the known arrangement.
  • the force acting in the role is introduced directly into the machine frame via the cam body.
  • smaller deformations of kinetostatic and dynamic origin can be assumed due to the reduced frame force.
  • the dynamic repercussions of the gripper bridge on the mechanism for register correction or tension compensation in the arch are expediently absorbed by the action of a spring which secures the initial position of the gripper bridge in the undeformed state and the force of which is increased by the mechanism. This achieves a higher quality of the registration correction.
  • the curve is advantageously pivotable on the frame about an axis aligned parallel to the eccentric axis mounted on the machine and held adjustable in its swivel position by an actuator, this actuator being changeable while the machine is running in order to be able to regulate the cornering position.
  • Claims 2 to 7 contain advantageous features for a further embodiment of the invention.
  • the pre-gripper shaft 1 is pivotally supported with its two ends in the machine frame 2 in the direction of the sheet transport.
  • the ends of the gripper bridge 3 are supported on the pre-gripper shaft 1 in a torsionally rigid manner, this support, which is known per se, not being shown in the drawing.
  • swiveling sheet grippers 4 are mounted at a distance along the width of the sheet on a gripper shaft 5, which cooperate with a gripper pad 6 on the gripper bridge 3 and grasp the sheet to be transported on the feed table 7 at its front edge and between itself and the Clamp the hook support 6.
  • an eccentric 9 is mounted below the latter, the other bearing of which is supported in a support arm 10 formed on the pre-gripper shaft 1.
  • a cam roller 12 is freely rotatably supported, which rests with its circumference against a curve 13 of a cam body 14, which is pivotally mounted on the frame 2 about an axis 16 aligned parallel to the bearing axis 15 of the eccentric 9 and is adjustable in its swivel position by an adjusting screw 17.
  • a compression spring 18 loads the cam roller 12 in the direction against the curve 13 and thus the cam body 14 in the direction against the adjusting screw 17.
  • the adjusting screw 17, which is arranged in a thread fixed to the frame, can be adjusted while the machine is running. Outside the area where the cam roller 12 bears against the cam 13, a stop 19 causes a stop position against an adjusting screw 20 that can also be screwed into a thread that is fixed to the frame.
  • the pre-gripper After a sheet has been transported from the feed table 7 to the feed cylinder 8, the pre-gripper passes through a reverse position and then moves back to the feed table 7. Shortly before reaching the feed table, the cam roller 12 runs onto the cam 13 of the cam body 14. The curve flank is not equidistant from the center path 21 of the cam roller 12, so that the cam roller is continuously deflected from the stop position against the action of the spring 18 by the stop position which can be adjusted by means of the adjusting screw 20 and caused by the spring 18. When this causes the eccentric 9 to rotate about its bearing axis 15, the gripper bridge 3 is displaced substantially tangentially to the arc path of the bearing axis 15 and deformed in the process.
  • This deformation also bends the gripper shaft 5, so that the sheet grippers 4 arranged on the gripper shaft are also shifted accordingly.
  • the storage of the eccentric 9 in the Gripper bridge 3 or in a bridge support connected to it corresponds kinematically to a swivel joint, so that no torsional moment and only a transverse force is transmitted.
  • the shear force is passed through the so-called thrust center of the gripper bridge profile, so that the desired central deflection of the gripper bridge results transversely to the sheet running direction and no bridge torsion occurs.
  • This deflection can be regulated within the required limits by means of the adjusting screw 17.
  • the bow is then gripped at its front edge by the sheet grippers in the deformed position of the gripper bridge and the gripper shaft.
  • the cam roller 12 runs from the cam 13, so that the gripper bridge relaxes and deforms back into its starting position.
  • the sheet is transferred to the feed cylinder 8, the sheet remains deformed because the gripper bridge remains in the undeformed state, which is fixed by the stop 19 resting on the adjusting screw 20.
  • the bearing axis 15 of the eccentric 9 lies approximately in a plane conceived by the pre-gripper shaft axis and by the center of the gripper bridge or slightly offset to the side, as shown in the drawing.
  • the storage of the eccentric 9 and its support in the support arm 10 takes place in the embodiment just below the gripper bridge 3.
  • the lateral offset of the bearing axis 15 relative to the plane through the center of the pre-gripper shaft 1 and through the center of the gripper shaft 5 avoids the effect of torsional moments to the grab bridge 3.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
EP95113668A 1994-09-28 1995-08-31 Dispositif de correction du repérage et de compensation de feuilles déformées dans le margeur d'une machine d'impression de feuilles Withdrawn EP0704398A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434624 1994-09-28
DE4434624A DE4434624C2 (de) 1994-09-28 1994-09-28 Vorrichtung zur Passerkorrektur und zum Ausgleich verspannter Bogen im Anleger einer Bogenrotationsdruckmaschine

Publications (2)

Publication Number Publication Date
EP0704398A2 true EP0704398A2 (fr) 1996-04-03
EP0704398A3 EP0704398A3 (fr) 1997-04-16

Family

ID=6529391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113668A Withdrawn EP0704398A3 (fr) 1994-09-28 1995-08-31 Dispositif de correction du repérage et de compensation de feuilles déformées dans le margeur d'une machine d'impression de feuilles

Country Status (4)

Country Link
US (1) US5596929A (fr)
EP (1) EP0704398A3 (fr)
JP (1) JPH08104445A (fr)
DE (1) DE4434624C2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611124B4 (de) * 1996-03-21 2012-07-26 Heidelberger Druckmaschinen Ag Bogenübertragungseinrichtung einer Bogenrotationsdruckmaschine
DE19616755C2 (de) * 1996-04-26 1999-12-16 Heidelberger Druckmasch Ag Antrieb für einen schwingenden Vorgreifer einer Bogendruckmaschine
DE19618029B4 (de) * 1996-05-04 2006-07-27 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zur Beseitigung von rhytmischen Passerfehlern in Bogendruckmaschinen mit mehrfachgroßen Zylindern
DE10003141A1 (de) * 2000-01-26 2001-08-02 Heidelberger Druckmasch Ag Übergabefehlerkompensation an Druckmaschinen
US6811336B2 (en) 2001-11-28 2004-11-02 Jostens, Inc. Registration cam for a printing press
US7337721B2 (en) * 2002-01-16 2008-03-04 Jostens, Inc. Adjustable die fixture for a printing press
JP4592075B2 (ja) * 2004-11-26 2010-12-01 アキヤマインターナショナル株式会社 オフセット印刷機のスイング機構
JP4496132B2 (ja) * 2005-06-08 2010-07-07 アキヤマインターナショナル株式会社 多色刷枚葉オフセット印刷機のスイング装置
DE102006061431A1 (de) * 2006-12-23 2008-06-26 Koenig & Bauer Aktiengesellschaft Vorrichtung zur Lagekorrektur von Bogen
DE102010054708A1 (de) * 2010-02-02 2011-08-04 Heidelberger Druckmaschinen AG, 69115 Vorrichtung zur Deckmarkenhöhenverstellung
DE102016204221A1 (de) * 2015-04-20 2016-10-20 Heidelberger Druckmaschinen Ag Druckwerk einer Bogendruckmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8816641U1 (de) 1988-12-03 1990-01-25 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zur Passerkorrektur der Bogenaufdrucke in einer Bogenrotationsdruckmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833213A (en) * 1972-04-17 1974-09-03 Rockwell International Corp Means for overcoming fan-out in lithograph press
DE3112964A1 (de) * 1981-04-01 1982-10-21 Heidelberger Druckmaschinen Ag, 6900 Heidelberg "bogenuebertragungszylinder von bogenrotationsdruckmaschinen mit einer einrichtung zur passerkorrektur der aufdrucke"
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
US4858910A (en) * 1987-01-22 1989-08-22 M.A.N. Roland Druckmaschinen Conveyor for a sheet-fed rotary press
US5176079A (en) * 1988-12-03 1993-01-05 Heidelberger Druckmaschinen Ag Device for correcting the register of sheet overprints in a sheet-fed rotary printing machine
DE4230218C2 (de) * 1992-09-10 1999-06-10 Heidelberger Druckmasch Ag Vorgreifer einer Bogendruckmaschine
DE4330392A1 (de) * 1993-09-08 1995-03-16 Heidelberger Druckmasch Ag Schwingender Vorgreifer einer Bogendruckmaschine
DE9409890U1 (de) * 1994-06-18 1994-08-04 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Vorrichtung zur Passerkorrektur an Bogenrotationsdruckmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8816641U1 (de) 1988-12-03 1990-01-25 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zur Passerkorrektur der Bogenaufdrucke in einer Bogenrotationsdruckmaschine

Also Published As

Publication number Publication date
DE4434624C2 (de) 1997-11-20
JPH08104445A (ja) 1996-04-23
US5596929A (en) 1997-01-28
DE4434624A1 (de) 1996-04-11
EP0704398A3 (fr) 1997-04-16

Similar Documents

Publication Publication Date Title
DE3112964C2 (fr)
DE3529639C2 (fr)
DE4434624C2 (de) Vorrichtung zur Passerkorrektur und zum Ausgleich verspannter Bogen im Anleger einer Bogenrotationsdruckmaschine
DE3008226A1 (de) Bogenrotationsdruckmaschine mit einem von unten arbeitenden vorgreifer
EP0570689B1 (fr) Dispositif pour tendre un cliché d'impression sur le cylindre porte-plaque d'une machine à imprimer, particulièrement une machine à imprimer offset des feuilles
EP0372237B1 (fr) Dispositif de correction du repérage de la surimpression sur une feuille dans une rotative à feuilles
DE3918215C1 (fr)
DE2030040A1 (fr)
EP0261412B1 (fr) Pince pour machines rotatives à feuilles
DE3736808C2 (fr)
DE3833645C2 (fr)
DD229666A1 (de) Steuereinrichtung der greifer eines vorgreifers an bogenverarbeitenden maschinen
EP0374496B1 (fr) Positionneurs pour les bords avant de feuilles
DE3529612A1 (de) Federnder greifer fuer bogenrotationsdruckmaschinen
DE19611124B4 (de) Bogenübertragungseinrichtung einer Bogenrotationsdruckmaschine
DE102007005958B4 (de) Vorrichtung zum Bogentransport
DE3529598A1 (de) Federnder greifer fuer bogenrotationsdruckmaschinen
DE10310375B4 (de) Bogenzuführtrommel
DE1014558B (de) Greifereinrichtung an Bogenfoerdervorrichtungen, die Bogen von dem Druckzylinder von Bogendruckmaschinen uebernehmen oder an ihn uebergeben
EP0685337B1 (fr) Dispositif pour régler la surface d'appui des pinces d'un ensemble à pinces pour feuilles dans un cylindre de retournement d'une machine d'impression recto-verso
DE4434151C2 (de) Greifer für Bogendruckmaschinen
DE1436529C3 (fr)
DE19820159A1 (de) Stellvorrichtung für eine Druckmaschine
DE2414998C3 (de) Wendevorrichtung einer Schön- und Widerdruckmaschine mit Zangengreifern
DE1170428B (de) Hin- und hergehender Vorgreifer an Bogen-Druckmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19950831

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE FR GB IT LI

GBC Gb: translation of claims filed (gb section 78(7)/1977)
PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR GB IT LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19970517