EP0685337A2 - Dispositif pour régler la surface d'appui des pinces d'un ensemble à pinces pour feuilles dans un cylindre de retournement d'une machine d'impression recto-verso - Google Patents

Dispositif pour régler la surface d'appui des pinces d'un ensemble à pinces pour feuilles dans un cylindre de retournement d'une machine d'impression recto-verso Download PDF

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Publication number
EP0685337A2
EP0685337A2 EP95105578A EP95105578A EP0685337A2 EP 0685337 A2 EP0685337 A2 EP 0685337A2 EP 95105578 A EP95105578 A EP 95105578A EP 95105578 A EP95105578 A EP 95105578A EP 0685337 A2 EP0685337 A2 EP 0685337A2
Authority
EP
European Patent Office
Prior art keywords
gripper
adjusting
bar
grippers
turning drum
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
EP95105578A
Other languages
German (de)
English (en)
Other versions
EP0685337B1 (fr
EP0685337A3 (fr
Inventor
Josef Mathes
Stefan Watzl
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 EP0685337A2 publication Critical patent/EP0685337A2/fr
Publication of EP0685337A3 publication Critical patent/EP0685337A3/fr
Application granted granted Critical
Publication of EP0685337B1 publication Critical patent/EP0685337B1/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
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine

Definitions

  • the invention relates to a device for height adjustment of the gripper bar for sheet grippers in a turning drum of a perfecting machine.
  • a device of this type is known from DE 3 508 699 C2.
  • the gripper pads can then be adjusted in height by means of an actuating shaft integrated in the swivel shaft using multi-stage setting levels.
  • This version is structurally complex and requires a larger space.
  • the object of the invention is to carry out the gripper pads for sheet grippers in a reversing drum of a perfecting machine, depending on the printing material thickness to be processed, in a height-adjustable manner with minimal space requirement, in a compact design with appropriate register stability.
  • the invention is suitable for turning drums in which the space available for adjusting the gripper pads is limited. With the present solution, the assembly effort is reduced and the gripper supports are adjusted continuously or in steps plane-parallel to the swivel shaft. Another advantage is the higher rigidity of the adjusting device, which is formed from a thrust cam mechanism, and the improvement of the plane parallelism of the gripper supports to the swivel shaft. The present solution reduces the mass forces, which is a further advantage with pivoting bearing plates.
  • the invention is suitable for gripper pad adjustment for straight printing as well as for counterpressure grippers.
  • a sheet-fed offset printing machine is shown in series.
  • a double-sized turning drum 18 is arranged between two double-sized printing cylinders 17.
  • a rubber blanket cylinder 19 and a plate cylinder 20 are associated with each printing cylinder 17 in a known manner.
  • the turning drum 18 carries on each half a gripping device 21, which is formed by a suction system 22, a first gripper system 23 (counter pressure gripper) and a second gripper system 24 (fine pressure gripper) (FIG. 5).
  • a height-adjustable gripper bar 4 of the second gripper system 24 is to be explained in more detail.
  • the first gripper system 23 can be designed analogously.
  • a pivot shaft 1 is rotatably fixed to the turning drum 18 in a plurality of bearing blocks 25 arranged transversely to the sheet running direction.
  • the pivot shaft 1 carries a plurality of holding plates 2 arranged at a uniform distance, in which a gripper shaft 16 is mounted.
  • Each holding plate 2 has a groove 3 aligned in approximately radial direction (with respect to the turning drum 18) axially parallel to the pivot shaft 1.
  • the gripper bar 4 which runs axially parallel to the turning drum 18 or the pivot shaft 1, is accommodated in each groove 3.
  • the height adjustment is integrated in a groove 7 in the gripper bar 4.
  • the height adjustment consists of a flat thrust cam mechanism, which is formed in Fig. 1 and 3 from a fixed wedge 6 and a pull bar 8 and represents the adjusting device.
  • Each wedge 6 is fixed in the groove 3 on the holding plate 2.
  • the pull bar 8 represents the cam carrier and runs parallel to the gripper bar 4.
  • Each cam joint is thus formed by the wedge 6 and the associated curve of the pull bar 8.
  • the gripper bar 4 is designed in two parts, such that a part is detachably connected to the holding plate 2 with a connecting element 10, for example a screw.
  • a connecting element 10 for example a screw.
  • On the first part of the gripper bar 4 a compression spring 9 is arranged, which is received on the second part of the gripper bar 4. Due to the spring force, the positive movement is guaranteed on each cam joint.
  • a number of gripper supports are arranged on the gripper bar 4 at defined intervals and are assigned to the respective gripper of a row of grippers (not shown) on the gripper shaft 16.
  • each cam joint of the thrust cam mechanism is formed according to FIG. 2 by the fixed wedge 6 and an associated roller 12, which is rotatably mounted on a pin 11 fixed to the gripper bar 4.
  • a threaded bolt 13 is fastened on the end face of the drawing strip 8 and forms a screw gear with a threaded sleeve 26.
  • the threaded bolt 13 has a handle 14 at its free end, which is preferably designed as a knurled handle.
  • the screw gear is guided in a bush 15.
  • the mode of operation is as follows: If substrates with different thicknesses (paper, cardboard) are to be processed, the height of the gripper bar 4 must be adjusted. When processing relatively thick substrates, the gripper bar 4 is set lower; when processing relatively thin substrates, the gripper bar 4 is raised.
  • the gripper bar 4 can be adjusted continuously or in switching stages.
  • the threaded bolt 13 is made to rotate in relation to the threaded sleeve 26 fixed to the frame (relative movement in the screw joint). Since the threaded bolt 13 is coupled to the drawing strip 8, the drawing strip 8 is moved forwards or backwards in the axial direction.
  • the manual actuation of the drawing strip 8 can also be carried out by an actuator.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
EP95105578A 1994-05-27 1995-04-13 Dispositif pour régler la surface d'appui des pinces d'un ensemble à pinces pour feuilles dans un cylindre de retournement d'une machine d'impression recto-verso Expired - Lifetime EP0685337B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9408714U DE9408714U1 (de) 1994-05-27 1994-05-27 Vorrichtung zur Verstellung der Greiferaufschlagleiste für Bogengreifer in einer Wendetrommel einer Schön- und Widerdruckmaschine
DE9408714U 1994-05-27

Publications (3)

Publication Number Publication Date
EP0685337A2 true EP0685337A2 (fr) 1995-12-06
EP0685337A3 EP0685337A3 (fr) 1996-12-27
EP0685337B1 EP0685337B1 (fr) 2000-01-26

Family

ID=6909182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105578A Expired - Lifetime EP0685337B1 (fr) 1994-05-27 1995-04-13 Dispositif pour régler la surface d'appui des pinces d'un ensemble à pinces pour feuilles dans un cylindre de retournement d'une machine d'impression recto-verso

Country Status (3)

Country Link
EP (1) EP0685337B1 (fr)
AT (1) ATE189161T1 (fr)
DE (2) DE9408714U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835754A3 (fr) * 1996-10-12 1998-12-16 MAN Roland Druckmaschinen AG Réglage décentralisé individuel des surfaces d'appui des pinces dans les cylindres de transport de feuilles des presses rotatives
DE19739571B4 (de) * 1996-12-17 2007-05-31 Heidelberger Druckmaschinen Ag Stellvorrichtung für eine Höhenverstellung von diametral gegenüberliegend angeordneten Greiferaufschlagleisten an bogenführenden Zylindern von Druckmaschinen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1208731A (en) * 1916-04-06 1916-12-19 Miehle Printing Press & Mfg Adjustable gripper-pad.
DE812431C (de) * 1949-12-13 1951-08-30 Johannisberg G M B H Maschf Einstellbare Greiferunterlagen an Schwinganlagen von Bogendruckmaschinen
DE1259904B (de) * 1964-12-17 1968-02-01 Roland Offsetmaschf Vorrichtung an den Bogenfuehrungseinrichtungen einer Mehrfarben-Bogenrotationsdruckmaschine zum Beeinflussen der Passerhaltigkeit der Aufdrucke
US4503772A (en) * 1981-04-21 1985-03-12 Komori Printing Machine Co., Ltd. Gripper pad height adjusting device for sheet-fed rotary printing presses
DE3447596A1 (de) * 1984-12-28 1986-07-03 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenuebertragungszylinder fuer bogenrotationsdruckmaschinen
DE3508699A1 (de) * 1985-03-12 1986-09-25 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Hoehenverstellbare greiferauflagen fuer wendetrommelgreifer in wendetrommeln von schoen- und widerdruckmaschinen
DD253009A1 (de) * 1986-09-30 1988-01-06 Polygraph Leipzig Bogengreifereinrichtung
JPH0641201B2 (ja) * 1987-12-07 1994-06-01 株式会社篠原鉄工所 枚葉式印刷機の爪座高さ調整装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835754A3 (fr) * 1996-10-12 1998-12-16 MAN Roland Druckmaschinen AG Réglage décentralisé individuel des surfaces d'appui des pinces dans les cylindres de transport de feuilles des presses rotatives
DE19739571B4 (de) * 1996-12-17 2007-05-31 Heidelberger Druckmaschinen Ag Stellvorrichtung für eine Höhenverstellung von diametral gegenüberliegend angeordneten Greiferaufschlagleisten an bogenführenden Zylindern von Druckmaschinen

Also Published As

Publication number Publication date
DE59507678D1 (de) 2000-03-02
DE9408714U1 (de) 1994-07-21
ATE189161T1 (de) 2000-02-15
EP0685337B1 (fr) 2000-01-26
EP0685337A3 (fr) 1996-12-27

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