EP0212366B1 - Federnder Greifer für Bogenrotationsdruckmaschinen - Google Patents

Federnder Greifer für Bogenrotationsdruckmaschinen Download PDF

Info

Publication number
EP0212366B1
EP0212366B1 EP86110488A EP86110488A EP0212366B1 EP 0212366 B1 EP0212366 B1 EP 0212366B1 EP 86110488 A EP86110488 A EP 86110488A EP 86110488 A EP86110488 A EP 86110488A EP 0212366 B1 EP0212366 B1 EP 0212366B1
Authority
EP
European Patent Office
Prior art keywords
gripper
sheet
finger
shaft
leaf springs
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
Application number
EP86110488A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0212366A3 (en
EP0212366A2 (de
Inventor
Manfred Rüger
Valentin Gensheimer
Hans-Otto Haas
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 AT86110488T priority Critical patent/ATE46859T1/de
Publication of EP0212366A2 publication Critical patent/EP0212366A2/de
Publication of EP0212366A3 publication Critical patent/EP0212366A3/de
Application granted granted Critical
Publication of EP0212366B1 publication Critical patent/EP0212366B1/de
Expired 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
    • B41F21/104—Gripper details

Definitions

  • the invention relates to a resilient gripper for sheet-fed rotary printing machines according to the preamble of the first claim.
  • DD-PS-66 634 From DD-PS-66 634 it is known to support a one-piece gripper lever on a gripper shaft and to adjust its pretensioning force by means of two compression springs.
  • the disadvantage is that the gripper lever loses its statically determined position if the most possible possible compensation of the bearing force is to be achieved. At very high machine speeds and increased preload forces, insufficient centering, e.g. B. due to spurious vibrations that are introduced into the machine, more possible.
  • Another disadvantage is the relatively large radius of inertia and the mass of the vibrating parts for initiating the holding process.
  • a gripper is known in which the axis of the gripper finger joint is pivotally mounted in a swivel joint parallel to the gripper shaft, the axis of the gripper finger joint being located approximately on the extension of a straight line pointing away from the gripper tip, which is the Support surface for the hook tip connects to the axis of the hook shaft.
  • the geometry shown in FIG. 1 shows that the force exerted by the gripper tip on the gripper support still has a component in the direction of sheet travel. As a result, there is still a risk of the arc shifting, as well as a possible torsion of the gripper shaft under high pretensioning forces, although an improvement over conventional grippers with a circular movement about the gripper shaft axis can be achieved.
  • a vertically closing gripper with a controlled gripper shaft is known from DE-PS-2 030 040.
  • a disadvantage is the frictional control of the gripper shaft relative to the fulcrum of a control lever by means of a guide on a control cam.
  • the additional control effort leads to an increase in the inertial forces of the system vibrating with a large radius of inertia and thus to a reduction in the performance of the printing press.
  • the control cam is heavily soiled, it is no longer possible to guide the second vertical movement phase exactly.
  • the object of the invention is to optimize a resilient gripper of the type mentioned with regard to the mass and the radii of inertia of the components and to give the gripper finger a slight pulling movement without play during the closing process.
  • the advantages of the solution according to the invention are that by deliberately bulging the two leaf springs 4, 5, their effective length can be slightly shortened. As a result, the holding effect is improved by an increased forced operation during a closing operation that takes place with a small pulling movement.
  • a soft gripper pad without bulging the gripper tip in an extended speed range with high pretensioning forces and overpressures in the direction of sheet travel, neither disturbing forces nor vibrations have an effect.
  • the gripper finger maintains its statically determined position and does not react so slowly.
  • There are also minimal gripper masses and minimal acceleration forces when using only two components, which act directly as a clamping piece and as a gripper finger sheet metal part. H. are connected to one another by clamping.
  • the gripper finger 2 cooperating with the gripper support 1 is formed in one piece as a sheet metal part by leaf springs 4, 5 which are prestressed via stop screw 9 and stop 13 and are elastically deformable.
  • the leaf springs 4, 5 are directly connected to a clamping piece 3, which consists of preformed sheet metal strips 11, 12 which are interlocked and which can be clamped on the gripper shaft 7 by means of a screw.
  • the clamping piece 3 is fastened on a gripper shaft 7 which can be arranged as deep as possible with a fixed axis within a cylinder 6.
  • the leaf springs 4, 5 provided as part of the gripper finger 2 have articulation points at the end which lie on a connecting line which runs through the fixed axis of the gripper shaft 7 and press the gripper finger 2 resiliently against the sheet 10 lying between the gripper support 1 and a gripper tip 8
  • the gripper finger 2 is under the pretension that can be regulated with the stop screw 9.
  • the leaf spring 4 is slightly S-shaped, while the leaf spring 5 cannot be significantly deformed, but overall the effective length is shortened.
  • the slight pulling movement of the gripper finger 2 avoids any sliding movement between the gripper tip 8 and the gripper support 1, without the elastic system being able to bulge indefinitely at high transverse forces, and at the same time brings about an improved dynamic behavior of the oscillating system because of the small number, mass and smaller radii of inertia of the components.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)
EP86110488A 1985-08-19 1986-07-30 Federnder Greifer für Bogenrotationsdruckmaschinen Expired EP0212366B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110488T ATE46859T1 (de) 1985-08-19 1986-07-30 Federnder greifer fuer bogenrotationsdruckmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3529612 1985-08-19
DE19853529612 DE3529612A1 (de) 1985-08-19 1985-08-19 Federnder greifer fuer bogenrotationsdruckmaschinen

Publications (3)

Publication Number Publication Date
EP0212366A2 EP0212366A2 (de) 1987-03-04
EP0212366A3 EP0212366A3 (en) 1987-11-04
EP0212366B1 true EP0212366B1 (de) 1989-10-04

Family

ID=6278821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110488A Expired EP0212366B1 (de) 1985-08-19 1986-07-30 Federnder Greifer für Bogenrotationsdruckmaschinen

Country Status (5)

Country Link
US (1) US4719854A (enrdf_load_stackoverflow)
EP (1) EP0212366B1 (enrdf_load_stackoverflow)
JP (1) JPS6251448A (enrdf_load_stackoverflow)
AT (1) ATE46859T1 (enrdf_load_stackoverflow)
DE (1) DE3529612A1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806526A1 (de) * 1988-03-01 1989-09-14 Heidelberger Druckmasch Ag Vorrichtung zum spannen von biegsamen druckplatten am plattenzylinder von rotationsdruckmaschinen
DE4101987A1 (de) * 1991-01-24 1992-07-30 Roland Man Druckmasch Bogengreifereinrichtung an bogen-rotationsdruckmaschinen
DE4127713C2 (de) * 1991-08-22 1996-03-21 Koenig & Bauer Albert Ag Greifer für Bogenrotationsdruckmaschinen
GB2268928B (en) * 1992-07-22 1995-10-18 Heidelberger Druckmasch Ag Sheet gripper for a paper-carrying cylinder of a sheet-fed printing press
DE19816512B4 (de) * 1997-08-18 2008-08-28 Heidelberger Druckmaschinen Ag Bogengreifer in einer Bogenrotationsdruckmaschine
DE102007005958B4 (de) * 2006-02-20 2015-07-16 Heidelberger Druckmaschinen Ag Vorrichtung zum Bogentransport
CN101024328B (zh) * 2006-02-20 2010-12-15 海德堡印刷机械股份公司 用于传送纸张的装置
DE102009027508A1 (de) * 2009-07-07 2011-01-20 Manroland Ag Greifer einer bogenhandhabenden Maschine

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE371756C (de) * 1923-03-21 Schnellpressenfabrik Act Ges H Auf der Greiferstange drehbar angeordneter Greifer fuer An- und Ablegevorrichtungen sowie fuer Druckzylinder an Druckmaschinen
DD67992A (enrdf_load_stackoverflow) *
DD66634A (enrdf_load_stackoverflow) *
DE356241C (de) * 1920-02-22 1922-07-18 Maschf Augsburg Nuernberg Ag Greifer fuer die Druckzylinder von Druckmaschinen
DE670298C (de) * 1937-02-28 1939-01-16 Albert Schnellpressen Auf einer verschwenkbaren Spindel lose angeordneter Bogengreifer fuer Druckmaschinen
US2378478A (en) * 1943-02-18 1945-06-19 Goss Printing Press Co Ltd Printing press gripper mechanism
SU67992A1 (ru) 1945-10-16 1946-11-30 И.Н. Новиков Устройство дл подрессоривани повозок
US2906204A (en) * 1957-06-24 1959-09-29 Cottrell Company Gripper assemblies
US2935937A (en) * 1957-10-29 1960-05-10 Davidson Corp Plate clamp for printing machine
US3044771A (en) * 1960-04-18 1962-07-17 Harris Intertype Corp Sheet handling cylinder
AT298522B (de) * 1968-02-21 1972-04-15 Polygraph Leipzig Vorrichtung zum klemmen von materialbogen
US3536321A (en) * 1968-06-13 1970-10-27 Planeta Veb Druckmasch Werke Device for clamping sheet material
DE1908181A1 (de) * 1969-02-19 1970-11-05 Roland Offsetmaschf Klemmgreifer fuer Bogenrotationsdruckmaschinen
US3606308A (en) * 1969-06-20 1971-09-20 Miller Printing Machinery Co Sheet gripping device
ES230780Y (es) * 1977-08-26 1978-07-01 Conjunto de pinza y abrazadera para el transporte de laminasen maquinas litograficas.
DD154083A1 (de) * 1980-11-17 1982-02-24 Arndt Jentzsch Bogengreifereinrichtung
EP0073955B1 (en) * 1981-09-04 1985-11-13 Motter Printing Press Co. Gripper for sheet handling equipment
US4647031A (en) * 1985-07-22 1987-03-03 The Dow Chemical Company Gripper finger device

Also Published As

Publication number Publication date
EP0212366A3 (en) 1987-11-04
US4719854A (en) 1988-01-19
DE3529612C2 (enrdf_load_stackoverflow) 1990-01-18
DE3529612A1 (de) 1987-02-26
JPH0530383B2 (enrdf_load_stackoverflow) 1993-05-07
EP0212366A2 (de) 1987-03-04
JPS6251448A (ja) 1987-03-06
ATE46859T1 (de) 1989-10-15

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