EP0212368A2 - Pince à ressort pour rotatives à feuille - Google Patents

Pince à ressort pour rotatives à feuille Download PDF

Info

Publication number
EP0212368A2
EP0212368A2 EP86110490A EP86110490A EP0212368A2 EP 0212368 A2 EP0212368 A2 EP 0212368A2 EP 86110490 A EP86110490 A EP 86110490A EP 86110490 A EP86110490 A EP 86110490A EP 0212368 A2 EP0212368 A2 EP 0212368A2
Authority
EP
European Patent Office
Prior art keywords
gripper
shaft
finger
sheet
spring
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.)
Granted
Application number
EP86110490A
Other languages
German (de)
English (en)
Other versions
EP0212368A3 (en
EP0212368B1 (fr
Inventor
Valentin Gensheimer
Winifried Hartung
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 AT86110490T priority Critical patent/ATE39435T1/de
Publication of EP0212368A2 publication Critical patent/EP0212368A2/fr
Publication of EP0212368A3 publication Critical patent/EP0212368A3/de
Application granted granted Critical
Publication of EP0212368B1 publication Critical patent/EP0212368B1/fr
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.
  • resilient grippers are designed in such a way that they can evenly absorb the tension that is exerted on the grippers by the paper. Since a slight pulling out of the paper from the gripper causes doubling or registration problems, one always tries to design the gripper with the maximum holding force.
  • 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 straight line extending away from the gripper tip, which is the supporting 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 continues to have 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.
  • DD-PS 67 992 From DD-PS 67 992 it is known to mount a gripper by means of a clamping piece on a swiveling gripper shaft having a fixed axis and a gripper tongue in a first movement phase to give a circular movement about the gripper shaft axis and in a second movement phase an approximately perpendicular movement with respect to the gripper support.
  • this gripper arrangement interacts with a non-positively operating parallel leaf spring arrangement and a gripper tongue that cannot withstand large closing forces without bulging. The gripper is therefore completely unsuitable for the highest possible closing forces.
  • 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 pivot point 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 invention has for its object to give the gripper finger in a gripper of the type mentioned in a second movement phase a positive movement approximately perpendicular to the gripper pad.
  • the advantages of the solution according to the invention are that, without bulging the gripper tip, irrespective of dirt on the guide and a soft gripper pad, neither disturbing forces nor vibrations can have an effect in an extended speed range with increased pretensioning forces and pressures in the direction of sheet travel.
  • the holding effect is improved by an increased forced operation of the vertical closing process, whereby the gripper finger maintains its statically determined position and does not react so sluggishly.
  • the gripper finger 2 cooperating with a gripper pad 1 is supported on a gripper shaft 3 in a spring-loaded manner relative to a clamping piece 4 on eccentric bushings 9, 10. Within the forked gripper bearing point, the clamping piece 4 is clamped on the gripper shaft 3 by means of a screw 5.
  • the spring 6 resiliently presses the gripper finger 2 against the arch 7 lying between the gripper support 1 and a gripper tip 12, there being a distance 11 adjustable by means of a stop screw between a stop lug 8 of the clamping piece 4 and the gripper finger 2. In the open state, the gripper finger 2 bears against a stop lug 8 under the action of a spring 6.
  • the gripper shaft 3 can be stored as deeply as possible vertically below the gripper tip, which means that the front edge of the sheet 7 can be freely moved around with the smallest possible swivel angle.
  • the gripper finger 2 can alternatively also be mounted on the gripper shaft 3 on eccentric grindings (not shown).

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)
EP86110490A 1985-08-19 1986-07-30 Pince à ressort pour rotatives à feuille Expired EP0212368B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110490T ATE39435T1 (de) 1985-08-19 1986-07-30 Federnder greifer fuer bogenrotationsdruckmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3529596 1985-08-19
DE19853529596 DE3529596A1 (de) 1985-08-19 1985-08-19 Federnder greifer fuer bogenrotationsdruckmaschinen

Publications (3)

Publication Number Publication Date
EP0212368A2 true EP0212368A2 (fr) 1987-03-04
EP0212368A3 EP0212368A3 (en) 1987-10-21
EP0212368B1 EP0212368B1 (fr) 1988-12-28

Family

ID=6278808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110490A Expired EP0212368B1 (fr) 1985-08-19 1986-07-30 Pince à ressort pour rotatives à feuille

Country Status (5)

Country Link
US (1) US4718343A (fr)
EP (1) EP0212368B1 (fr)
JP (1) JPH0673958B2 (fr)
AT (1) ATE39435T1 (fr)
DE (1) DE3529596A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632768C1 (de) * 1986-09-26 1988-01-14 Roland Man Druckmasch Klemmgreifer fuer Bogenrotationsdruckmaschinen
DE3644484A1 (de) * 1986-12-24 1988-07-07 Heidelberger Druckmasch Ag Greifereinrichtung fuer eine druckmaschine
DE3821324C2 (de) * 1988-06-24 1994-03-10 Heidelberger Druckmasch Ag Bogengreifer an Bogenrotationsdruckmaschinen
DE4127713C2 (de) * 1991-08-22 1996-03-21 Koenig & Bauer Albert Ag Greifer für Bogenrotationsdruckmaschinen
DE4214191A1 (de) * 1992-04-30 1993-11-04 Roland Man Druckmasch Greifer fuer bogendruckmaschinen
DE4233421C1 (de) * 1992-04-30 1994-02-17 Roland Man Druckmasch Greifer für Bogendruckmaschinen
DE4317429C2 (de) * 1993-05-26 2001-06-13 Heidelberger Druckmasch Ag Vorrichtung zur drehfesten im Phasenwinkel stufenlos einstellbaren Befestigung eines Greiferanschlages
DE4438757C2 (de) * 1994-10-29 1997-09-11 Roland Man Druckmasch Vorgreifer für Bogenrotationsdruckmaschinen
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
JP7016483B2 (ja) * 2018-05-30 2022-02-07 株式会社リコー シート材搬送装置、印刷装置
CN113104644B (zh) * 2021-04-16 2022-07-19 包头职业技术学院 一种模切机的辅助递纸装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1484088A (fr) * 1966-06-10 1967-06-09 Adamovske Strojirny Np Dispositif pour entraîner la pince oscillante de machines à imprimer rotatives ainsi que machines pourvues dudit dispositif
DE1908181A1 (de) * 1969-02-19 1970-11-05 Roland Offsetmaschf Klemmgreifer fuer Bogenrotationsdruckmaschinen
GB1338525A (en) * 1971-06-08 1973-11-28 Cigardi Omc Sa Disconnect arrangement for multi-unit printing press
EP0061607A1 (fr) * 1981-04-01 1982-10-06 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre de transfert de feuilles avec dispositif de correction du repérage de l'impression pour machines rotatives d'impression de feuilles

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD67992A (fr) *
GB259597A (en) * 1924-09-09 1927-02-28 American Type Founders Co Improvements in or relating to printing presses
US2933040A (en) * 1958-12-19 1960-04-19 Harris Intertype Corp Sheet gripper element
DE1799734U (de) * 1959-03-28 1959-11-12 Roland Offsetmaschf Greiferwelle.
DE1174804B (de) * 1962-06-26 1964-07-30 Planeta Veb Druckmasch Werke Bogengreifer an bogenverarbeitenden Maschinen
US3606308A (en) * 1969-06-20 1971-09-20 Miller Printing Machinery Co Sheet gripping device
DE7009099U (de) * 1970-03-12 1970-06-25 Maschf Augsburg Nuernberg Ag Greifereinrichtung an rotationsdruckmaschinen.
JPS5120205Y2 (fr) * 1972-05-01 1976-05-27
DD154083A1 (de) * 1980-11-17 1982-02-24 Arndt Jentzsch Bogengreifereinrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1484088A (fr) * 1966-06-10 1967-06-09 Adamovske Strojirny Np Dispositif pour entraîner la pince oscillante de machines à imprimer rotatives ainsi que machines pourvues dudit dispositif
DE1908181A1 (de) * 1969-02-19 1970-11-05 Roland Offsetmaschf Klemmgreifer fuer Bogenrotationsdruckmaschinen
GB1338525A (en) * 1971-06-08 1973-11-28 Cigardi Omc Sa Disconnect arrangement for multi-unit printing press
EP0061607A1 (fr) * 1981-04-01 1982-10-06 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre de transfert de feuilles avec dispositif de correction du repérage de l'impression pour machines rotatives d'impression de feuilles

Also Published As

Publication number Publication date
ATE39435T1 (de) 1989-01-15
DE3529596A1 (de) 1987-02-26
JPH0673958B2 (ja) 1994-09-21
DE3529596C2 (fr) 1989-10-05
JPS6251449A (ja) 1987-03-06
US4718343A (en) 1988-01-12
EP0212368A3 (en) 1987-10-21
EP0212368B1 (fr) 1988-12-28

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