EP0529445B1 - Pince pour machine rotative à imprimer des feuilles - Google Patents

Pince pour machine rotative à imprimer des feuilles Download PDF

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Publication number
EP0529445B1
EP0529445B1 EP92113946A EP92113946A EP0529445B1 EP 0529445 B1 EP0529445 B1 EP 0529445B1 EP 92113946 A EP92113946 A EP 92113946A EP 92113946 A EP92113946 A EP 92113946A EP 0529445 B1 EP0529445 B1 EP 0529445B1
Authority
EP
European Patent Office
Prior art keywords
gripper
clamping piece
section
shaft
elastic material
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
EP92113946A
Other languages
German (de)
English (en)
Other versions
EP0529445A1 (fr
Inventor
Erich Georg Wieland
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0529445A1 publication Critical patent/EP0529445A1/fr
Application granted granted Critical
Publication of EP0529445B1 publication Critical patent/EP0529445B1/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
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/104—Gripper details

Definitions

  • the invention relates to grippers for sheet-fed rotary printing machines according to the preamble of patent claim 1.
  • gripper devices on sheet-fed rotary printing presses are known in which the articulation point lies on an imaginary connecting line between the center of the gripper shaft and the front edge of the gripper finger. Above this hinge point, an elastic cushion is provided, against which the gripper finger is resiliently supported via the paper sheet against the gripper pad.
  • the disadvantage here is that the articulation point deflects from the imaginary connecting line when the gripper bounces more, which leads to pushing of the gripper and thus to inaccuracies in the gripping process. Beyond that, there is no two-dimensional support of the gripper finger on the gripper support, since the articulation point of the gripper does not match the pivot point of the gripper shaft.
  • the invention has for its object to provide a dirt-insensitive gripper for sheet-fed rotary printing presses, which also works without shear movement when closing.
  • the elastic material of the grippers according to the invention is also insensitive to heat, so that they can also be used advantageously in machines with dryers. It is also possible to design the elastic material so that it is resistant to greases and detergents, so that the grippers according to the invention can also be used in printing units without problems.
  • FIG. 1 shows a cross section through a gripper 1 according to the invention
  • Fig. 2 shows the associated section along the line A-B.
  • a clamping piece 2 with tabs 3; 4 encloses the gripper shaft 6.
  • the clamping piece 2 is arranged on the gripper shaft 6 so that it can be clamped by means of a clamping screw 7.
  • the clamping piece 2 is surrounded by the gripper housing 8, which has a gripper arm 9 with gripper fingers 11.
  • the gripper finger 11 has a pressure surface 12 which acts on the surface 14 of the gripper support 16 via the sheet 13 to be held.
  • An elastic material 17 is arranged between the gripper housing 8 and the clamping piece 2, which is separated or delimited by radially extending webs 18.
  • the webs 18 can consist of metal and have a storage function. Depending on the place of use of the gripper 1, the elastic material 17 can consist, for example, of rubber, silicone rubber, chlorinated rubber or polyurethane.
  • the gripper arm 9 can be pretension
  • a bow-shaped clamping piece 21 is fastened on the gripper shaft 23 by means of a screw 22.
  • the clamping piece 21 is in turn surrounded by a gripper housing 24, this housing 24 being designed only on one side in accordance with the bow-shaped configuration of the clamping piece 21.
  • the gripper housing 24 has a gripper arm 26 with a gripper finger 11.
  • the gripper finger 11 has a pressure surface 12 which acts on the surface 14 of the gripper pad 16 via the sheet 13 to be held.
  • the elastic material 17 is arranged between the gripper housing 24 and the clamping piece 21.
  • the clamping piece 21 has a tab 27 which extends parallel to the gripper arm 26.
  • the gripper arm 26 can be pretensioned by means of an adjusting screw 28 which acts against the tab 27.
  • a third variant of a gripper 29 is shown.
  • One of two parts 31; 32 existing clamping piece with tabs 33; 34 surrounds the gripper shaft 23.
  • the two-part clamping piece 31; 32 arranged on the gripper shaft 23 in a clampable manner, the clamping piece 31 engaging with a nose 36 in a recess 37 of the gripper arm 39.
  • the clamping piece 31; 32 is partially surrounded by a gripper housing 38.
  • the gripper housing 38 has a gripper arm 39 with a gripper finger 11.
  • the gripper finger 11 has a pressure surface 12 which acts on the surface 14 of the gripper support 16 via the sheet 13 to be held.
  • the elastic material is arranged between the gripper housing 38 and the clamping piece 32.
  • the gripper arm 39 can be pretensioned by means of an adjusting screw 10 which acts against a tab 41 arranged at right angles on the clamping piece 32.
  • the webs 18 shown in FIGS. 1, 3 and 5 can have a rectangular cross section 18, a trapezoidal cross section 18 ', a roll-section shaped cross section 18''or also one Cross section 18 '''with cut-out bearings.

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)

Claims (8)

  1. Pince (1) pour machine rotative à imprimer des feuilles, avec un carter de pince (8), fixé sur l'arbre de pince (9) et comportant un bras de pince (9) avec un doigt de pince (11), la surface de pressage (12) du doigt de pince (11) agissant par l'intermédiaire d'une feuille (13) sur la surface (14) de l'embase de pince (16), caractérisée en ce que le carter de pince (8; 24; 38) est relié, avec une élasticité, par l'intermédiaire d'un élément élastomère (17), à une pièce de serrage (2; 21; 31; 32) fixé sur l'arbre de pince (6, 23).
  2. Pince selon la revendication 1, caractérisée en ce que le matériau élastique (17) est séparé et délimité au moyen de nervures (18) s'étendant en direction radiale.
  3. Pince selon les revendications 1 et 2, caractérisée en ce que la pièce de serrage (2) est disposée, d'une façon permettant un serrage, sur l'arbre de pince (6) au moyen de pattes (3; 4) ainsi qu'une vis de serrage (7).
  4. Pince selon la revendication 1, caractérisée en ce que la pièce de serrage (21) est fixée sur l'arbre de pince (23) au moyen d'une vis de pince (22).
  5. Pince selon la revendication 1, caractérisée en ce que la pièce de serrage (31, 32) est réalisée en deux parties et comporte des pattes (33, 34) pouvant être reliées au moyen d'une vis (7), la pièce de serrage (31) s'engageant, par un ergot (36), dans un évidement (37) du bras de pince (39).
  6. Pince selon les revendications 1 à 5, caractérisée en ce que le matériau élastique (17) est constitué d'un caoutchouc naturel, de polyuréthanne, de caoutchouc au silicone ou de caoutchouc chloroprène.
  7. Pince selon les revendications 1 à 6, caractérisée en ce que le bras de pince (9; 26; 39) peut être précontraint par rapport à la patte (3; 27; 41) au moyen d'une vis de réglage (10; 28).
  8. Pince selon les revendications 2, 3, 6, et 7 caractérisée en ce que les nervures (18) ont une section transversale (18) rectangulaire, une section transversale (18') trapézoïdale, une section transversale (18'') cylindrique partiellement évidée ou bien une section transversale (18''') partiellement évidée avec appui sur des tranchants.
EP92113946A 1991-08-22 1992-08-17 Pince pour machine rotative à imprimer des feuilles Expired - Lifetime EP0529445B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4127713 1991-08-22
DE4127713A DE4127713C2 (de) 1991-08-22 1991-08-22 Greifer für Bogenrotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0529445A1 EP0529445A1 (fr) 1993-03-03
EP0529445B1 true EP0529445B1 (fr) 1995-12-20

Family

ID=6438786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92113946A Expired - Lifetime EP0529445B1 (fr) 1991-08-22 1992-08-17 Pince pour machine rotative à imprimer des feuilles

Country Status (5)

Country Link
US (1) US5303650A (fr)
EP (1) EP0529445B1 (fr)
JP (1) JPH05193109A (fr)
DE (2) DE4127713C2 (fr)
RU (1) RU2046040C1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4317429C2 (de) * 1993-05-26 2001-06-13 Heidelberger Druckmasch Ag Vorrichtung zur drehfesten im Phasenwinkel stufenlos einstellbaren Befestigung eines Greiferanschlages
DE4321850A1 (de) * 1993-07-01 1995-01-12 Roland Man Druckmasch Greifer für Bogendruckmaschinen
IT1269473B (it) * 1994-01-26 1997-04-01 Ormag Spa Disposizione di montaggio della barra porta-pinze in macchine cartografiche
DE4434151C2 (de) * 1994-09-24 2000-05-25 Heidelberger Druckmasch Ag Greifer für Bogendruckmaschinen
DE4438757C2 (de) * 1994-10-29 1997-09-11 Roland Man Druckmasch Vorgreifer für Bogenrotationsdruckmaschinen
DE19527439C2 (de) * 1995-07-27 2002-10-24 Heidelberger Druckmasch Ag Greiferbrücke für Ausleger von Druckmaschinen
DE19613963C2 (de) * 1996-04-09 1999-03-04 Heidelberger Druckmasch Ag Vorrichtung zum Ablösen eines Bogens von einem Gummizylinder einer Druckmaschine
DE19927695A1 (de) * 1998-07-06 2000-01-13 Heidelberger Druckmasch Ag Greifer für einen bogentransportierenden Zylinder oder Trommel einer Rotationsdruckmaschine
US7329221B2 (en) * 2003-09-30 2008-02-12 Fpna Acquisition Corporation Assembly for and method of gripping sheets of material in an interfolder
DE102008043754A1 (de) 2008-11-14 2010-05-20 Steinemann Technology Ag Bogenführungssystem für eine Bogen verarbeitende Druck-, Veredelungs- oder Weiterverarbeitungsmaschine
JP1565712S (fr) * 2016-02-04 2016-12-19
FR3059059B1 (fr) * 2016-11-23 2019-11-01 Financiere De Beaumont - Fdb Dispositif pour arrimer un element sur un conduit destine a etre immerge, ensemble submersible, installation et procede de mise en œuvre

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906204A (en) * 1957-06-24 1959-09-29 Cottrell Company Gripper assemblies
DE1908181A1 (de) * 1969-02-19 1970-11-05 Roland Offsetmaschf Klemmgreifer fuer Bogenrotationsdruckmaschinen
DE2725035C3 (de) * 1977-06-03 1979-11-22 Koenig & Bauer Ag, 8700 Wuerzburg Greifer
DE2822043C3 (de) * 1978-05-20 1981-02-12 Koenig & Bauer Ag, 8700 Wuerzburg Einteiliger Greifer eines Zylinders einer Rotationsdruckmaschine
CH644816A5 (de) * 1980-02-08 1984-08-31 Ferag Ag Foerdereinrichtung, inbesondere fuer druckprodukte, mit an einem umlaufenden zugorgan verankerten greifzangen.
DE8404981U1 (de) * 1984-02-18 1984-05-10 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogengreifer fuer druckmaschinen
US4647031A (en) * 1985-07-22 1987-03-03 The Dow Chemical Company Gripper finger device
DE3529596A1 (de) * 1985-08-19 1987-02-26 Roland Man Druckmasch Federnder greifer fuer bogenrotationsdruckmaschinen
DE3529612A1 (de) * 1985-08-19 1987-02-26 Roland Man Druckmasch Federnder greifer fuer bogenrotationsdruckmaschinen
DE3529639A1 (de) * 1985-08-19 1987-02-26 Roland Man Druckmasch Federnder greifer fuer bogenrotationsdruckmaschinen
US4681213A (en) * 1985-10-23 1987-07-21 Harris Graphics Corporation Gripper assembly
DE3644484A1 (de) * 1986-12-24 1988-07-07 Heidelberger Druckmasch Ag Greifereinrichtung fuer eine druckmaschine
DE3914646A1 (de) * 1989-05-03 1990-11-08 Heidelberger Druckmasch Ag Greifereinrichtung an bogenrotationsdruckmaschinen
DE3935219C1 (en) * 1989-10-23 1991-02-21 Man Roland Druckmaschinen Ag, 6050 Offenbach, De Paper sheet grip in printing machine - has cam compressing springs to achieve required degree of resilience

Also Published As

Publication number Publication date
DE4127713C1 (fr) 1992-10-29
RU2046040C1 (ru) 1995-10-20
DE59204738D1 (de) 1996-02-01
JPH05193109A (ja) 1993-08-03
US5303650A (en) 1994-04-19
EP0529445A1 (fr) 1993-03-03
DE4127713C2 (de) 1996-03-21

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