EP0703074B1 - Cylindre de transfer de feuilles pour machine à imprimer - Google Patents

Cylindre de transfer de feuilles pour machine à imprimer Download PDF

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Publication number
EP0703074B1
EP0703074B1 EP95112721A EP95112721A EP0703074B1 EP 0703074 B1 EP0703074 B1 EP 0703074B1 EP 95112721 A EP95112721 A EP 95112721A EP 95112721 A EP95112721 A EP 95112721A EP 0703074 B1 EP0703074 B1 EP 0703074B1
Authority
EP
European Patent Office
Prior art keywords
gripper
drum
sheet guiding
support bar
positioning
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
EP95112721A
Other languages
German (de)
English (en)
Other versions
EP0703074A2 (fr
EP0703074A3 (fr
Inventor
Dietrich Dettinger
Roland Höll
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
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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0703074A2 publication Critical patent/EP0703074A2/fr
Publication of EP0703074A3 publication Critical patent/EP0703074A3/fr
Application granted granted Critical
Publication of EP0703074B1 publication Critical patent/EP0703074B1/fr
Anticipated expiration legal-status Critical
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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

Definitions

  • the invention relates to a sheet-guiding drum between the Printing units or further processing units of rotary printing machines using one or more gripper bars, which are evenly distributed around the drum circumference and on different ones Substrate thicknesses are adjustable.
  • GB 2 098 966 A describes a positioning device (Superscript and subscript) of the gripper pad of a gripper bridge a sheet guide cylinder known. Positioning the gripper pads, depending on the thickness of the substrate to be processed, is carried out by means of an adjusting rod that counteracts in the cylinder axis direction Spring force displaceable under one over the by means of a screw Entire cylinder length extending gripper pad is arranged.
  • the contact surfaces of the gripper pad and adjusting rods form in Cylinder axis direction a thrust wedge gear, such that a Shifting the adjustment rod the radial positioning of the Gripper pads (set higher or lower).
  • the disadvantage is that for the central adjustment of the gripper bars a lot of effort for the respective substrate thickness is required.
  • For transfer drums with multiple gripper bars according to DE 3 428 668 C2 is a basic and fine adjustment of the gripper bar required for a precise adjustment of all To enable gripper slats. After that is a separate one Adjustment of the gripper bars, for example by inaccuracies when taking over or handing over the sheet between to avoid arc-guiding cylinders or in the event of an accidental Gripper turn bar adjustment, not possible.
  • a individual adjustment of each gripper bar is only possible through The locked adjustment means can be released manually.
  • the object of the invention is a separate adjustment (high or lower) of all gripper bars of the sheet-guiding drum to carry out the printing stock thickness to be processed and possible Compensate for inaccuracies in the sheet transfer / sheet transfer.
  • the solution according to the invention is primarily for sheet-guiding Drums (transfer drums) suitable, it is also open bow-guiding cylinder applicable and is therefore also suitable for Adjustment of the gripper bar for feed drums or pre-gripper cylinders.
  • the present invention is particularly suitable for one to four times the size of drums (based on a single size Impression cylinder) with the corresponding number of symmetrical Gripper bridges arranged on the circumference. It is used for processing of substrates with different thickness, e.g. Paper or cardboard.
  • the separate adjustment of the gripper pads A sheet-guiding drum shortens the changeover time and minimizes it subjective influences and eliminates inaccuracies in the sheet transfer or sheet acceptance.
  • the invention further provides a economical, automatable solution.
  • the installation position of the Actuating device is in alignment with the positioning device on the drum body, such that no collision with the neighboring ones Side frames enters.
  • Each actuator is separate of the respective energy supply, especially in succession, controlled.
  • a sheet-guiding drum 1 is in an offset rotary printing machine downstream of a printing cylinder of the previous printing unit and the drum 1 is a printing cylinder of another Subordinate printing unit.
  • the drum 1 is based on one simple impression cylinder, with a double-sized diameter executed and thus carries two gripper bridges 12.
  • the two gripper bridges 12 are distributed symmetrically arranged (offset by 180 °).
  • Each gripper bridge 12 consists of a Gripper shaft, grippers and adjustable in almost radial direction Gripper service bars 2.
  • the gripper service bar 2 carries associated support blocks for each gripper Single gripper pad.
  • the drum 1 is rotatable with two drum pins in one Storage of a side frame 11 added.
  • Each gripper bar 2 is associated with a positioning device 3 which Depending on the substrate thickness, the superscript or subscript of the Grapple bar 2 causes.
  • the positioning device 3 is axially movably mounted on the drum body 1. With a double size Drum 1 two positioning devices 3 are thus arranged, each with a positioning rod 4 and several on it attached wedge-shaped elements 5 are formed.
  • the wedge-shaped Elements 5 of a positioning device 3 are several wedge-shaped Assigned elements of the gripper bar 2.
  • the wedge-shaped elements 5 and the wedge-shaped elements of the Gripper impact bar 2 each form a sliding joint in the form of a Thrust wedge.
  • Each wedge-shaped arranged on the positioning rod 4 Element 5 acts as a drive member, each wedge-shaped element the gripper bar 2 acts as an output member.
  • the gripper bar 2 is spring-loaded against the positioning device 3 supported.
  • the actuator 7 is coupled to the positioning rod 4 and is arranged via a line system 8 with a on the drum journal Rotary transformer 9 connected.
  • the rotary transformer 9 is with a Power supply 10 connected to each actuator 7th controls separately.
  • the controlled compressed air supply via a valve block.
  • Any positioning device 3 is adjustable in its axial stroke Stops 6 limited. This allows the positioning device 3 each gripper bar 2 adjustable in two stages operate. The first stage (raising the gripper bar 2) is suitable for paper. The second stage (subscripts the gripper bar 2) is suitable for cardboard.
  • the mode of action is as follows:
  • the drum 1 accepts a printed sheet from a printing cylinder of an upstream printing unit and transfers the sheet to the printing cylinder of the downstream printing unit. If a substrate with a changed thickness (thickness) is to be processed, it is necessary to set the gripper bar 2 higher or lower.
  • the energy supply 10 is activated manually or automatically, for example from a control center.
  • Each actuating device 7, here the pneumatic cylinder is controlled individually with compressed air in succession on the gripper bridge 12 in question. This causes the piston of the pneumatic cylinder to move the coupled positioning rod 4 axially up to the stop (first stage). The axial movement of the positioning rod 4 brings about the radial adjustment of the gripper bar 2 within two stages.
  • the adjustment in two stages has proven to be sufficient. For example, a distance between the upper edges of the gripper bars of a drum 1 and the adjacent printing cylinder is favorable for paper of approximately 0.2 mm and for cardboard of approximately 0.7 mm.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Rotary Presses (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Laminated Bodies (AREA)

Claims (7)

  1. Tambour de guidage de feuilles pour machines à imprimer, faisant appel à des ponts de préhension régulièrement répartis sur la périphérie du tambour et chaque fois constitués par un arbre, des pinces et des barrettes réglables de manoeuvre de pinces,
       caractérisé en ce que
       il est prévu, pour le réglage vers le haut et vers le bas de chaque barrette de manoeuvre de pinces (2), un dispositif de positionnement (3) agissant sur la barrette de manoeuvre de pinces (2) et accouplé à un dispositif d'actionnement (7) associé au tambour, ce dernier dispositif pouvant être accionné séparément, par l'intermédiaire d'un dispositif de transmission de rotation (9), par une source d'énergie (10) commandée.
  2. Tambour de guidage de feuilles selon la revendication 1,
       caractérisé en ce que
       la course du dispositif d'actionnement (7) et/ou du dispositif de positionnement (3) est réglable au moyen de butées (6) ajustables.
  3. Tambour de guidage de feuilles selon la revendication 1,
       caractérisé en ce que
       le dispositif de positionnement (3) est constitué par une tige de positionnement (4) axialement mobile et présentant plusieurs éléments en forme de coin (5), ces éléments (5) formant, avec des éléments associés en forme de coin de la barrette de manoeuvre de pinces (2), un accouplement à glissement sous la forme d'un coin de poussée.
  4. Tambour de guidage de feuilles selon les revendications 1 à 3,
       caractérisé en ce que
       dans le cas de tambours double taille (1), il est prévu deux dispositifs d'actionnement (7), qui agissent individuellement, au moyen d'un dispositif de positionnement (3), sur la barrette de manoeuvre de pinces (2) correspondante et qui sont reliés, au moyen de lignes (8) séparées, à la source d'énergie (10), par l'intermédiaire du dispositif de transmission de rotation (9).
  5. Tambour de guidage de feuilles selon les revendications 1 à 3,
       caractérisé en ce que
       dans le cas de tambours triple taille (1), il est prévu trois dispositifs d'actionnement (7), qui agissent individuellement, au moyen de dispositifs de positionnement (3), sur les barrettes de manoeuvre de pinces (2) correspondantes et qui sont reliés, au moyen de lignes (8) séparées, à la source d'énergie (10), par l'intermédiaire du dispositif de transmission de rotation (9).
  6. Tambour de guidage de feuilles selon les revendications 1 à 3,
       caractérisé en ce que
       dans le cas de tambours quadruple taille (1), il est prévu quatre dispositifs d'actionnement (7), qui agissent individuellement, au moyen de dispositifs de positionnement, sur les barrettes de manoeuvre de pinces (2) correspondantes et qui sont reliés, au moyen de lignes (8) séparées, a la source d'énergie (10), par l'intermédiaire du dispositif de transmission de rotation (9).
  7. Tambour de guidage de feuilles selon la revendication 1,
       caractérisé en ce que
       le dispositif d'actionnement (7) est constitué par un vérin de travail à commande pneumatique ou hydraulique, ou par un dispositif d'entraínement électrique.
EP95112721A 1994-09-23 1995-08-11 Cylindre de transfer de feuilles pour machine à imprimer Expired - Lifetime EP0703074B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434000A DE4434000C2 (de) 1994-09-23 1994-09-23 Bogenführende Trommel für Rotationsdruckmaschinen
DE4434000 1994-09-23

Publications (3)

Publication Number Publication Date
EP0703074A2 EP0703074A2 (fr) 1996-03-27
EP0703074A3 EP0703074A3 (fr) 1997-01-22
EP0703074B1 true EP0703074B1 (fr) 1998-06-10

Family

ID=6529002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112721A Expired - Lifetime EP0703074B1 (fr) 1994-09-23 1995-08-11 Cylindre de transfer de feuilles pour machine à imprimer

Country Status (5)

Country Link
US (1) US5609105A (fr)
EP (1) EP0703074B1 (fr)
JP (1) JP2921657B2 (fr)
AT (1) ATE167113T1 (fr)
DE (2) DE4434000C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642104C2 (de) * 1996-10-12 1998-09-10 Roland Man Druckmasch Anordnung zur dezentralen Einzelverstellung von Greiferaufschlagleisten in bogenführenden Trommeln bzw. Zylindern von Rotationsdruckmaschinen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503772A (en) * 1981-04-21 1985-03-12 Komori Printing Machine Co., Ltd. Gripper pad height adjusting device for sheet-fed rotary printing presses
DE3428668A1 (de) * 1984-08-03 1986-02-13 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Umfuehrtrommel fuer bogendruckmaschinen, insbesondere kartonmaschinen
DE3535621A1 (de) * 1985-10-05 1987-04-09 Heidelberger Druckmasch Ag Bogenuebergabetrommel
DD248319A1 (de) * 1986-04-21 1987-08-05 Polygraph Leipzig Saugersteuerungen in bogenfuehrungszylindern
DE3721900A1 (de) * 1987-07-02 1989-01-19 Heidelberger Druckmasch Ag Fernbedienbare stellmittel zur elastischen verformung einer registerschiene
DE4004352C1 (fr) * 1990-02-13 1991-06-06 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE4200406C2 (de) * 1992-01-10 1996-10-10 Heidelberger Druckmasch Ag Greifereinrichtung an bogenverarbeitenden Rotationsdruckmaschinen
DE4221929C2 (de) * 1992-07-03 1997-11-20 Heidelberger Druckmasch Ag Greifersteuerung für Bogengreifer an einem bogenführenden Zylinder oder dergleichen in einer Druckmaschine
DE4308595A1 (de) * 1993-03-18 1994-09-22 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zum Verringern von Bogennachlauf am Gummizylinder einer Offsetdruckmaschine
DE4337578A1 (de) * 1993-11-04 1995-05-11 Roland Man Druckmasch Bogenführende Trommel für Druchmaschinen

Also Published As

Publication number Publication date
DE4434000A1 (de) 1996-03-28
EP0703074A2 (fr) 1996-03-27
JPH08108522A (ja) 1996-04-30
DE59502478D1 (de) 1998-07-16
DE4434000C2 (de) 1998-02-26
US5609105A (en) 1997-03-11
JP2921657B2 (ja) 1999-07-19
EP0703074A3 (fr) 1997-01-22
ATE167113T1 (de) 1998-06-15

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