EP0970808B1 - Pince pour un cylindre de transfert de feuilles ou tambour d'une presse à imprimer rotative - Google Patents

Pince pour un cylindre de transfert de feuilles ou tambour d'une presse à imprimer rotative Download PDF

Info

Publication number
EP0970808B1
EP0970808B1 EP99111077A EP99111077A EP0970808B1 EP 0970808 B1 EP0970808 B1 EP 0970808B1 EP 99111077 A EP99111077 A EP 99111077A EP 99111077 A EP99111077 A EP 99111077A EP 0970808 B1 EP0970808 B1 EP 0970808B1
Authority
EP
European Patent Office
Prior art keywords
gripper
shaft
radius
drum
rotary printing
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
EP99111077A
Other languages
German (de)
English (en)
Other versions
EP0970808A1 (fr
Inventor
Rudi Haupenthal
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 EP0970808A1 publication Critical patent/EP0970808A1/fr
Application granted granted Critical
Publication of EP0970808B1 publication Critical patent/EP0970808B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 gripper on a sheet-transporting cylinder of a rotary printing press, in particular a pliers gripper on a turning drum.
  • a so-called pliers gripper which is formed from a gripper and a counter-gripper.
  • the gripper forms the gripper support and the counter-gripper forms the gripper finger that can be pivoted with respect to the gripper support.
  • Distributed over the axial length of the sheet transporting cylinder a number of these grippers are arranged at intervals.
  • the gripper pads are screwed to a common gripper shaft.
  • the gripper shaft has, at least in the area of the gripper support attachment, a flattened area on which the gripper supports are fastened in a linearly displaceable manner when the gripper supports are installed, so that manufacturing tolerances can be eliminated.
  • the problem with the adjustment of the gripper pads is that all the clamping points of the gripper pads arranged next to one another and the respective gripper fingers should lie on a common clamping point line, so that the sheet to be transported can be gripped evenly without forming waves.
  • a linear displacement of the gripper supports makes it difficult to set a common line of clamping points for all gripper devices arranged next to one another, so that small tolerances have to be accepted.
  • the deviations of the clamping points from the common line of the clamping points are doubled.
  • the object of the invention is therefore to create an adjustment option for a gripper element of a gripper which minimizes a deviation of the clamping points from the common ideal line.
  • the torsional and bending stiffness of the shaft does not have to be reduced by recesses for mounting the gripper pad.
  • a pivot point for the gripper elements lies on the axis of the gripper shaft. This measure allows the clamping points of the gripper device to be set on a common ideal line.
  • a fastening surface of the gripper support has a concave curvature, the radius of curvature of which is smaller than the radius of the gripper shaft.
  • the mounting surfaces can have a high roughness, which improves the clamping fit on the shaft. An unwanted loosening of the gripper pad from this prevents the gripper shaft. Further embodiments and features of the invention are contained in the subclaims.
  • a sheet-fed rotary printing press has, among other things, a so-called reversing drum, which transports the sheet to be printed or already printed in face-to-face printing, i.e. the sheet is taken over by a preceding cylinder by means of provided gripper devices and transferred to a gripper device of a downstream cylinder at the front edge as also transported in reverse printing, ie the sheets are taken from the upstream cylinder at the rear edge and turned over to the subsequent cylinder with the rear edge first.
  • a so-called reversing drum which transports the sheet to be printed or already printed in face-to-face printing, i.e. the sheet is taken over by a preceding cylinder by means of provided gripper devices and transferred to a gripper device of a downstream cylinder at the front edge as also transported in reverse printing, ie the sheets are taken from the upstream cylinder at the rear edge and turned over to the subsequent cylinder with the rear edge first.
  • a so-called pliers gripper 1 is provided for this.
  • the gripper 1 has a first gripper 2, which serves as a gripper support and a gripper 3 which interacts with the gripper support and is designed as a gripper finger.
  • a larger number, z. B. 20 pliers gripper 1 Distributed over the axial length of the transport or turning drum, a larger number, z. B. 20 pliers gripper 1 arranged
  • the gripper pads 2 are fixed on a common gripper shaft 4 and the gripper fingers 3 are pivotally mounted on a common gripper tube 6.
  • the gripper fingers 3 are each arranged by means of a stop 7 via a compression spring 8 on a fixed to the gripper tube 6 Abutment 9 supported.
  • the gripper pads 2 each have at one end facing away from the gripper tip 17 a bore 11 which is slightly larger in diameter than a fastening screw 12 for the gripper pad 2, so that the gripper pad 2 can be adjusted, in particular during assembly with respect to the gripper shaft 4 becomes.
  • this has a ball seat 11a, in which a spherical washer 10 is arranged to compensate for the position of the fastening screw 12 and the gripper support 2.
  • the gripper pad 2 has a concave, rough, z. B. sandblasted seat 13, which is adapted to the curvature 14 of the gripper shaft diameter.
  • the curvature of the seat surface 13 has a smaller radius r than the radius R of the gripper shaft diameter.
  • the gripper support 2 only needs to be aligned in the axial direction and in the circumferential direction of the gripper shaft 4.
  • All gripper pads 2 are set on the radius R around the axis 16 of the gripper shaft 4.
  • the axis 16 forms a pivot point S 1 for the circumferential orientation of the gripper pad 2.
  • all of the gripper pad tips 17 arranged axially next to one another should be on a common clamping point line 18 parallel to the gripper shaft 4 or axis 16 are.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (6)

  1. Pince pour un cylindre ou un tambour d'une machine à imprimer rotative à feuilles qui présente un élément de pince réglable par rapport à son arbre de pince qui la porte,
    caractérisée
    - en ce que l'élément de pince (2) présente un point de pivotement (S1) autour duquel l'élément de pince (2) est monté pivotant pour le réglage,
    - en ce que l'élément de pince (2) présente une surface d'appui (13) incurvée avec une forme concave, dont le rayon ( r) est adapté au rayon ( R) de l'arbre de pince (4),
    - en ce que le rayon ( r) de la surface d'appui incurvée avec une forme concave est plus petit que le rayon ( R) de l'arbre de pince.
  2. Pince selon la revendication 1,
    caractérisée
    en ce que le point de pivotement (S1) est disposé à l'intérieur de la périphérie de l'arbre de pince (4) ou sur cette périphérie.
  3. Pince selon la revendication 1,
    caractérisée
    en ce que le point de pivotement (S1) est l'axe (16) de l'arbre de pince (4).
  4. Pince selon la revendication 1,
    caractérisée
    en ce que l'élément de pince (2) présente un perçage (11) à travers lequel un moyen de fixation (12) est guidé avec un jeu de réglage.
  5. Pince selon une des revendications précédentes,
    caractérisée
    en ce que l'élément de pince (2) coopère avec un élément de pince conjugué (3) qui est monté pivotant sur un tube de pince (6) qui entoure coaxialement l'arbre de pince (4).
  6. Pince selon la revendication 5,
    caractérisée
    en ce qu'un élément formant ressort (8) tend à rapprocher l'un de l'autre l'élément de pince conjugué (3) et l'élément de pince (2) qui coopère avec lui.
EP99111077A 1998-07-06 1999-06-17 Pince pour un cylindre de transfert de feuilles ou tambour d'une presse à imprimer rotative Expired - Lifetime EP0970808B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19830080 1998-07-06
DE19830080 1998-07-06

Publications (2)

Publication Number Publication Date
EP0970808A1 EP0970808A1 (fr) 2000-01-12
EP0970808B1 true EP0970808B1 (fr) 2003-09-10

Family

ID=7873089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99111077A Expired - Lifetime EP0970808B1 (fr) 1998-07-06 1999-06-17 Pince pour un cylindre de transfert de feuilles ou tambour d'une presse à imprimer rotative

Country Status (4)

Country Link
US (1) US6263794B1 (fr)
EP (1) EP0970808B1 (fr)
JP (1) JP4584378B2 (fr)
DE (2) DE59906926D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008031275A1 (de) 2008-07-02 2010-01-07 Koenig & Bauer Aktiengesellschaft Vorrichtung zur seitlichen Ausrichtung von Bedruckstoffbogen

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10235895B4 (de) 2001-09-21 2019-01-24 Heidelberger Druckmaschinen Ag Schön- und Widerdruckmaschine
JP2006248228A (ja) * 2005-03-08 2006-09-21 Heidelberger Druckmas Ag はさみ型グリッパを用いて両面印刷運転でシートを搬送するための装置
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
US20080092760A1 (en) * 2006-10-19 2008-04-24 Heidelberger Druckmaschinen Ag Device and Method for Driving a Reversing Gripper in a Sheet-Processing Machine, Reversing Drum and Printing Press
DE102008056239A1 (de) * 2007-11-29 2009-06-04 Heidelberger Druckmaschinen Ag Greifer zum Fördern eines Bogens durch eine drucktechnische Maschine
DE102008058069B4 (de) 2007-12-14 2020-07-23 Heidelberger Druckmaschinen Ag Übertragungstrommel zwischen Druckwerken einer Bogendruckmaschine
DE102012013635B4 (de) * 2011-08-01 2022-11-10 Heidelberger Druckmaschinen Intellectual Property Ag & Co. Kg Greiferanordnung zum Fördern eines Bogens
DE102015209696B4 (de) * 2015-05-27 2021-04-08 Koenig & Bauer Ag Greifersystem und Verfahren zur Herstellung eines Greifersystems
DE102022103491A1 (de) 2022-02-15 2023-08-17 Koenig & Bauer Ag Greifersystem für einen Rotationsförderer

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE488948C (de) * 1928-09-02 1930-01-11 Albert Neumann Vorrichtung zum OEffnen der Greifer eines Druckzylinders bei dessen Stillstand
DE2220652C3 (de) * 1972-04-27 1975-04-17 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Vorrichtung zum Befestigen von Druckplatten auf dem Plattenzylinder einer Rotationsdruckmaschine
CH589517A5 (fr) * 1974-03-28 1977-07-15 Heidelberger Druckmasch Ag
US4101122A (en) 1974-03-28 1978-07-18 Heidelberger Druckmaschinen Aktiengesellschaft Sheet turn-over device for a first-form printing and perfecting press with clamping grippers
DE2725035C3 (de) * 1977-06-03 1979-11-22 Koenig & Bauer Ag, 8700 Wuerzburg Greifer
JPS579071Y2 (fr) * 1977-12-09 1982-02-22
DE2822049C3 (de) 1978-05-20 1981-07-09 Oschatz Gmbh, 4300 Essen Rohrgelenkverbindung
DE2822043C3 (de) * 1978-05-20 1981-02-12 Koenig & Bauer Ag, 8700 Wuerzburg Einteiliger Greifer eines Zylinders einer Rotationsdruckmaschine
DE3519293A1 (de) 1985-05-30 1986-12-04 Koenig & Bauer AG, 8700 Würzburg Greifersystem
DE3623405A1 (de) * 1986-07-11 1988-02-04 Miller Johannisberg Druckmasch Bogengreifer fuer bogenverarbeitende maschinen
DE3644484A1 (de) * 1986-12-24 1988-07-07 Heidelberger Druckmasch Ag Greifereinrichtung fuer eine druckmaschine
DE4026237C1 (fr) * 1990-08-18 1992-02-06 Man Miller Druckmaschinen Gmbh, 6222 Geisenheim, De
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
JPH0653144U (ja) * 1993-01-05 1994-07-19 東京航空計器株式会社 反転機構付枚葉印刷機の反転グリッパ装置
DE4307712C1 (de) 1993-03-11 1994-02-17 Silvia Dussmann Greifereinrichtung
DE4321850A1 (de) * 1993-07-01 1995-01-12 Roland Man Druckmasch Greifer für Bogendruckmaschinen
DE4330610A1 (de) 1993-09-09 1995-03-16 Roland Man Druckmasch Bogengreifer für eine Bogen verarbeitende Maschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008031275A1 (de) 2008-07-02 2010-01-07 Koenig & Bauer Aktiengesellschaft Vorrichtung zur seitlichen Ausrichtung von Bedruckstoffbogen

Also Published As

Publication number Publication date
DE59906926D1 (de) 2003-10-16
EP0970808A1 (fr) 2000-01-12
US6263794B1 (en) 2001-07-24
JP4584378B2 (ja) 2010-11-17
DE19927695A1 (de) 2000-01-13
JP2000037850A (ja) 2000-02-08

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