EP0535405B1 - Dispositif pour le transfert de feuilles en position de repère et le transport de celles-ci entre les unités d'impression d'une machine à imprimer à plusieurs couleurs - Google Patents

Dispositif pour le transfert de feuilles en position de repère et le transport de celles-ci entre les unités d'impression d'une machine à imprimer à plusieurs couleurs Download PDF

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Publication number
EP0535405B1
EP0535405B1 EP92115305A EP92115305A EP0535405B1 EP 0535405 B1 EP0535405 B1 EP 0535405B1 EP 92115305 A EP92115305 A EP 92115305A EP 92115305 A EP92115305 A EP 92115305A EP 0535405 B1 EP0535405 B1 EP 0535405B1
Authority
EP
European Patent Office
Prior art keywords
gripper
gripper carriage
sheet transfer
printing
running
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
EP92115305A
Other languages
German (de)
English (en)
Other versions
EP0535405A2 (fr
EP0535405A3 (fr
Inventor
Georg Hartung
Helmut Schild
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 EP0535405A2 publication Critical patent/EP0535405A2/fr
Publication of EP0535405A3 publication Critical patent/EP0535405A3/fr
Application granted granted Critical
Publication of EP0535405B1 publication Critical patent/EP0535405B1/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
    • B41F21/08—Combinations of endless conveyors and grippers

Definitions

  • the invention relates to a device for precisely fitting sheet transfer and for transporting sheets between the printing units of a multicolour printing machine according to the preamble of the first claim.
  • the transport of sheets and the transfer of sheets within multi-color sheet printing machines by means of gripper carriages and endless chains is known from DE 3 636 578 A1.
  • the gripper carriages experience a deflection dependent on the printing speed during the deflection by the chain wheel due to the centrifugal forces.
  • the gripper carriage locking device according to DE-AS 1 224 753 avoids these centrifugal effects on the gripper car by several hooks which firmly connect the gripper car to the sprocket shaft during the transfer time, but which still require complex control mechanisms to achieve the opening and closing movements.
  • the bending devices generally concern sheet transfer drums, e.g. Positioning or reversing drums, the position of a middle gripper carrier bearing being determined by the instantaneous rotational position of an adjustable control cam mechanism with an external curve on a control shaft and a pressure roller running against the external curve under pretension in the case of sheet transfer drums with a gripper carrier which can be pivoted relative to their rotational movement.
  • sheet transfer drums e.g. Positioning or reversing drums
  • the position of a middle gripper carrier bearing being determined by the instantaneous rotational position of an adjustable control cam mechanism with an external curve on a control shaft and a pressure roller running against the external curve under pretension in the case of sheet transfer drums with a gripper carrier which can be pivoted relative to their rotational movement.
  • the bending devices also relate to an oscillating gripper, the bending devices consisting of an adjustable stop which is fixed relative to the side stand, against which a gripper carrier comes to rest approximately in the middle before the ends of the gripper carrier have reached their zero position in which the grippers take over the bow.
  • the bending devices relate to a sheet guiding cylinder which has a non-rotating crossbeam in the area of the cylinder bearings and, viewed in the axial direction, is provided in the central region of the cylinder body with an adjustable support bearing which is mounted eccentrically to the crossbeam, the crossbeam is rotatable and lockable on the frame, so that the targeted deflection of the cylinder itself can be achieved by the adjustable middle support bearing.
  • the known bending devices thus relate to drum transfer systems and vibrating grippers (pre-grippers), but not chain transfer systems.
  • the object of the invention is to design a device according to the preamble of claim 1 such that at Chain transfer systems a sheet transfer ensuring the registration of the printed image is given.
  • the invention it is thus provided to pre-tension the gripper carriage running on the rails by means of a bending device, so that a gripper impact bar which is concave across the format width results in a straight line in the deflection area of the chain wheel. Centrifugal effects are suppressed by these high bending forces. With a corresponding design of the bending device provided according to the invention (building up and reducing force), the occurrence of bending vibrations in the gripper carriage is also avoided.
  • FIG. 1 shows a machine overview in which a chain transfer system for printed sheets is used between printing units 1 and 2.
  • the gripper carriages 3 are guided on rails 12 and are carried along by endless driven chains 4.
  • the gripper carriage 3 is carried by the chain 4 via a link 7 and a drive roller 8 (FIG. 3).
  • the sheet is transported via sprockets (take-up drum 5, feed drum 6) into the printing unit 2.
  • Fig. 2 shows the gripper carriage 3 shortly before contact with a bending device 16-21 in the area of the feed drum 6.
  • catch forks 11 are rigidly connected to the feed drum 6 and rotate with it. Such catching forks 11 are known to bring about a very advantageous alignment of the gripper carriage 3.
  • a gripper bar 14 is concave across the width of the gripper carriage 3 such that, even at maximum centrifugal force, the gripper bar 14 continues to decrease continuously from the outside to the center during the deflection of the gripper carriage 3 around the sprocket, so that there are still differences in height remain.
  • a bending device 16-21 which consists of an outer curve 16 with a circular segment mounted in the middle of the removal and supply drums 5, 6, against that in the transfer area during the deflection of the the rails 12 guided gripper carriage 3 runs around the sprocket a middle pressure roller 17 attached to the gripper carriage 3, which bends the gripper carriage 3 in the middle and thereby prestresses it.
  • the radially and azimuthally adjustable catch forks 11 grip the pretensioned gripper carriage 3 on the associated cam roller 10 and press it outward, so that the rollers 9 of the pretensioned gripper carriage 3 are pressed against the rail 12 with additional pressure and the latter rotates calmly (see also FIG. 4).
  • the outer curve 16 of the bending device 16 - 21 consists of a lowered run-up area, to which the actual support area connects in a circle.
  • Fig. 2 it can be seen that the outer curve 16 is attached with its circular segment to a flange 20 which is rotatably mounted on the sprocket shaft 18 via a roller bearing 19 and has an arm which is connected to a rod 21 running parallel to the drum axis .
  • the rod 21 is thus attached to the outer curve 16, while at least one end is attached to the side stand 13, but this is not shown in the drawing.
  • the outer curve 16 can have such a course in the circumferential direction, so that there is a soft bending force build-up and breakdown behavior. The greatest force is applied in the area of the sheet transfer. The bending force required for this can be determined by calculation or by measurement. The deflection of the sprocket shaft 18 is also taken into account.
  • the gripper bar 14 is so strongly concave, so that even the maximum centrifugal force can not bend the gripper carriage 3 completely straight, but this only causes the bending device 16-21.
  • the force on the gripper carriage 3 in the middle of the take-off and feed drum 5, 6 becomes smaller with increasing speed due to the centrifugal force-related relaxation, thus also the pressure in the bearings of the rollers 10, 17 of the gripper carriage 3.
  • the set catching forks 11 are adjusted by means of the engaging cam rollers 10 in the sheet transfer position the pre-tensioned and thus also vibration-free running gripper carriage 3 with a straight bent gripper bar 14 in the radial and tangential direction, so that the sheet can be transferred in register with alignment.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Handling Of Cut Paper (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (3)

  1. Dispositif pour le transfert à position exacte de feuilles, pour le transport de feuilles entre les unités d'impression d'une machine d'impression à plusieurs couleurs, constitué de chariots de prise qui sont accrochés à des chaînes entraînées sans fin, qui sont guidés par l'intermédiaire de galets d'avance sur des rails, et qui comportent une tige de butée de preneur et des preneurs coopérant avec celle-ci, les chaînes étant guidées dans la zone du transfert de feuilles autour de tambours à chaînes et la tige de butée de preneur étant réalisée de façon concave en hauteur en s'étendant sur la largeur du chariot de prise,
    caractérisé en ce qu'un dispositif de cintrage (16-21) est prévu dans la zone de renvoi des roues à chaînes (5,6), le dispositif de cintrage agissant sur la zone interne du chariot de prise (3) en son milieu, le chariot de prise (3) pouvant être pressé par le dispositif de cintrage contre les rails (12) de sorte que la tige de butée de preneur (14) est courbée de façon rectiligne dans la position de transfert de feuilles.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que le dispositif de cintrage (16-21) est constitué d'une came externe (16) montée sur l'arbre (18) de la roue à chaînes, sur laquelle came se déplace un galet de pressage (17) monté sur le chariot de prise (3) pour engendrer les forces de cintrage, et la came externe (16) étant arrêtée par l'intermédiaire d'une barre (21) s'étendant transversalement à la direction de la machine et fixée au support latéral (13).
  3. Dispositif selon l'une des revendications 1 ou 2,
    caractérisé en ce que la came externe (16) présente une zone de mise en marche qui est formée de sorte que le galet de pressage (17) entre en contact avant la position de transfert de feuilles.
EP92115305A 1991-09-25 1992-09-08 Dispositif pour le transfert de feuilles en position de repère et le transport de celles-ci entre les unités d'impression d'une machine à imprimer à plusieurs couleurs Expired - Lifetime EP0535405B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4131887 1991-09-25
DE4131887A DE4131887C1 (fr) 1991-09-25 1991-09-25

Publications (3)

Publication Number Publication Date
EP0535405A2 EP0535405A2 (fr) 1993-04-07
EP0535405A3 EP0535405A3 (fr) 1993-06-02
EP0535405B1 true EP0535405B1 (fr) 1995-06-14

Family

ID=6441443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115305A Expired - Lifetime EP0535405B1 (fr) 1991-09-25 1992-09-08 Dispositif pour le transfert de feuilles en position de repère et le transport de celles-ci entre les unités d'impression d'une machine à imprimer à plusieurs couleurs

Country Status (5)

Country Link
US (1) US5267510A (fr)
EP (1) EP0535405B1 (fr)
JP (1) JPH0775884B2 (fr)
AT (1) ATE123700T1 (fr)
DE (2) DE4131887C1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477780A (en) * 1992-06-23 1995-12-26 Keller; James J. Horizontal sheet transfer multiple color offset rotary printing press with horizontal slide access
DE4443057A1 (de) * 1994-12-03 1996-06-05 Heidelberger Druckmasch Ag Bogenauslage an Druckmaschinen
DE19525635C2 (de) * 1995-07-14 1998-01-29 Heidelberger Druckmasch Ag Vorrichtung zur Bogenauslage in einer Bogendruckmaschine
DE19611124B4 (de) * 1996-03-21 2012-07-26 Heidelberger Druckmaschinen Ag Bogenübertragungseinrichtung einer Bogenrotationsdruckmaschine
DE19901698B4 (de) * 1998-02-11 2008-01-24 Heidelberger Druckmaschinen Ag Vorrichtung zum Transport von Bogen oder Falzprodukten
DE102007007240A1 (de) 2007-02-14 2008-08-21 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Transport von Bogen in einer Druckmaschine
DE102007030999A1 (de) * 2007-07-04 2009-01-08 Manroland Ag Bogenrotationsdruckmaschine
DE102007033931A1 (de) * 2007-07-20 2009-01-22 Manroland Ag Greifersystem für eine Bogendruckmaschine
DE202010003977U1 (de) 2010-03-22 2010-07-01 Manroland Ag Auslegergreifersystem
DE102019123579B4 (de) * 2019-09-03 2022-12-08 Koenig & Bauer Ag Vorrichtung zum Transport von Bogen in einer bogenverarbeitenden Maschine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771838A (en) * 1951-05-10 1956-11-27 Business Systems Inc Feeding and delivering devices in hectographic address printers
DE920132C (de) * 1952-01-17 1954-11-15 Koenig & Bauer Schnellpressfab Vorrichtung zur passgerechten Bogenuebergabe mittels Greiferketten bei Druckmaschinen
DE1224753B (de) * 1965-05-15 1966-09-15 Koenig & Bauer Schnellpressfab Vorrichtung zur passgerechten Bogenuebergabe an Druckwerken mittels Greiferketten bei Druck-maschinen
DE2157993C2 (de) * 1971-11-23 1974-01-31 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Vorrichtung zum Transport von Bogen in einer Bogendruckmaschine
DE2308025C3 (de) * 1973-02-19 1980-12-04 Western Gear Corp., Pittsburgh, Pa. (V.St.A.) Bogenausleger für eine Bogendruckmaschine
SU878713A1 (ru) * 1980-03-26 1981-11-07 Всесоюзный Научно-Исследовательский Институт Полиграфического Машиностроения Листотранспортирующее устройство печатной машины
DE3112964A1 (de) * 1981-04-01 1982-10-21 Heidelberger Druckmaschinen Ag, 6900 Heidelberg "bogenuebertragungszylinder von bogenrotationsdruckmaschinen mit einer einrichtung zur passerkorrektur der aufdrucke"
US4765239A (en) * 1986-05-28 1988-08-23 Ciccone Nicolas T Multi-impression systems with indexing of printing cylinder
DE3636578A1 (de) * 1986-10-28 1988-05-19 Roland Man Druckmasch Vorrichtung zur passgenauen bogenuebergabe zwischen den druckeinheiten einer mehrfarbendruckmaschine
DE3823846A1 (de) * 1988-07-14 1990-01-18 Heidelberger Druckmasch Ag Zylinder im druckwerk von bogen-rotationsdruckmaschinen
DE8816641U1 (fr) * 1988-12-03 1990-01-25 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
US5088404A (en) * 1989-05-09 1992-02-18 Macconnell Edward P Delivery apparatus for printing press
US4967656A (en) * 1989-06-21 1990-11-06 Printing Research, Inc. Eccentric cylinder for sheet-fed rotary printing presses
US4977828A (en) * 1989-08-07 1990-12-18 Printing Research, Inc. Transfer roller device for printing presses

Also Published As

Publication number Publication date
DE4131887C1 (fr) 1993-01-07
EP0535405A2 (fr) 1993-04-07
DE59202521D1 (de) 1995-07-20
US5267510A (en) 1993-12-07
EP0535405A3 (fr) 1993-06-02
JPH0775884B2 (ja) 1995-08-16
ATE123700T1 (de) 1995-06-15
JPH05208486A (ja) 1993-08-20

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