EP0154843A2 - Dispositif de tension des plaques d'impression - Google Patents

Dispositif de tension des plaques d'impression Download PDF

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Publication number
EP0154843A2
EP0154843A2 EP85101752A EP85101752A EP0154843A2 EP 0154843 A2 EP0154843 A2 EP 0154843A2 EP 85101752 A EP85101752 A EP 85101752A EP 85101752 A EP85101752 A EP 85101752A EP 0154843 A2 EP0154843 A2 EP 0154843A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
plate
clamping
tensioning
rail
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
EP85101752A
Other languages
German (de)
English (en)
Other versions
EP0154843B1 (fr
EP0154843A3 (en
Inventor
Heinz Schollenberger
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 EP0154843A2 publication Critical patent/EP0154843A2/fr
Publication of EP0154843A3 publication Critical patent/EP0154843A3/de
Application granted granted Critical
Publication of EP0154843B1 publication Critical patent/EP0154843B1/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
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L29/00—Devices for attaching printing elements or formes to supports
    • B41L29/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41L29/14—Clamping devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/75—Joints and connections having a joining piece extending through aligned openings in plural members

Definitions

  • the invention relates to tensioning devices for printing plates for offset printing machines, perforated at their front and rear edges in the sheet running direction, by means of these perforations, which are provided in the cylinder channel of the plate cylinder and are provided with hooking rails, one of the clamping rails being diagonally pivotable relative to the cylinder longitudinal direction about a pivot point.
  • the printing plates applied to the plate cylinder are generally designed as foils, which are given the properties required for the offset process via an etching device.
  • the devices mentioned have proven to be disadvantageous in that, on the one hand, when the pressure plate is tensioned, it usually leads to tensioning of the pressure plate and, on the other hand, with increasing contamination of the adjustment mechanisms, these become more difficult to move and, as a result, perforation of the pressure plate occurred. Handling also often proved to be uncomfortable, since the pressure plate may have to be removed during the adjustment work.
  • the individual paper sheets 3 are guided from a paper stack 1 via a separating device 2 into the gap between the blanket cylinder 4 and the impression cylinder 5, where the printing process takes place.
  • the paper sheet 3 printed in this way is then gripped by a chain delivery 7 provided with gripper rows 6 and fed to a delivery stack 8.
  • the printed image is transferred via a dampening unit 9 and an inking unit 10 with an application roller 11, which inks a plate cylinder 12, to the rubber cylinder 4, which carries out the printing.
  • a rubber blanket washing device 13 is assigned to the blanket cylinder 4, while an etching device 15 is provided for the printing plate 14, and a feed device 16 can also be assigned to the plate cylinder 12.
  • the pressure plate 14 is fastened on the plate cylinder 12 by means of a tensioning device 17 for its front edge 21 and a further tensioning device 18 for its rear edge 22.
  • a control panel 19 provided with appropriate keyboards is used to operate the machine.
  • FIG. 2 shows an enlarged view of the plate cylinder 12 with the clamping devices 17, 18, its contours and the longitudinal axis 30 of the plate cylinder being indicated.
  • the tensioning device 17 for the pressure plate front edge 21 initially consists of a base plate 24 which partially covers the cylinder channel 23 and which is connected to the plate cylinder 12 via screw connections 25.
  • a threaded bolt 27 protrudes from the surface of the bottom plate 24 in the area of the plate cylinder center line 26, which serves as the fulcrum for a tensioning rail 29 located on the base plate 24 and provided with hooks 28.
  • the threaded bolt 27 protruding through a bore 32 of this tensioning rail 29 is provided at its upper end with a nut 33 with associated locking washer 34 and washer 31 in order to hold the tensioning rail 29.
  • the clamping rail 29 which can be rotated diagonally with respect to the longitudinal direction of the plate cylinder, can be locked in an axially parallel position by means of an additional locking device 36 attached to it. Among other things, this facilitates the clamping of the pressure plate 14.
  • the clamping rail 29 has a web 37 in this area via a right-angled bend.
  • a locking lever 39 is fastened to this by means of screw 38, nut 33 and locking washer 34 (see also FIG. 4).
  • This is T-shaped and pivotable about the pivot point 40 formed by the screw 38.
  • His shaft 41 engages in a u.a. From Fig.2 apparent recess 42 of the bottom plate 24. This in turn has a narrow area 43 and a wide area 44.
  • the shaft 41 engages in the narrow region 43 of this recess 42, which is of the same width, which corresponds to a locking of the tensioning rail 29 in an axially parallel orientation.
  • this locking is released and, due to the wide area 44 of the recess 42, a certain scope for a rotary movement of the tensioning rail 29 around the pivot point created by the threaded bolt 27 is possible.
  • FIGS. 3 and 5 show views of the tensioning device 18, which cooperates with the tensioning device 17 for the pressure plate front edge 21, for the rear edge 22 of the latter. This, in turn, is also equipped with a tensioning rail 45 provided with hooks 46.
  • Fig. 3 shows the adjustment mechanism for lateral, i.e. Adjustment of this tensioning rail 45 directed in the longitudinal direction of the cylinder.
  • a bottom plate 47 covering it is also provided in this region of the cylinder channel 23.
  • a lower bar 48 and an upper bar 49 lying above it, as will be shown later, are arranged so as to be movable relative to one another.
  • a threaded bolt 50 is attached to the upper bar 49, which produces the connection to the tensioning rail 45 via a nut 33 and a locking washer 34, but a mutual rotatability about the threaded bolt 50 is retained as the axis of rotation.
  • Beadings 35 provided on both strips 48, 49 again serve for smooth operation and prevent excessive soiling.
  • An eccentric 54 is connected to the lower bar 48 via a threaded bolt 51 with nut 52 and washer 53 and has an adjusting lever 55.
  • This eccentric 54 which can be rotated around the threaded bolt 51 as a fulcrum, protrudes from a recess 56 of the upper bar 49 corresponding to the eccentric cross section.
  • FIG. 5 shows the connection mechanisms between the base plate 47 and the two strips 48, 49, as well as the spring-loaded tensioning mechanism for tensioning the pressure plate 14 on the plate cylinder 12.
  • a tension spring 58 is articulated in the interior of the plate cylinder 12, the other end 72 of which holds a bolt 61.
  • This bolt 61 which is held by means of the locking ring 62 and the disk 63, projects through an elongated hole 64 of the base plate 47 directed in the cylinder circumferential direction and is fastened to the lower bar 48.
  • a further bolt 66 is attached, which protrudes through an elongated hole 67 in the cylinder longitudinal direction of the upper bar 49 and is also provided with washer 63 and locking ring 62.
  • a web 68 created by right-angled bending of the lower bar 48 enables the tensioning rail 45 to be actuated manually against the spring force of the tension springs 58, for example for hanging the pressure plate 14.
  • the two tension springs 58 arranged symmetrically to the plate cylinder center line 26 are dimensioned such that due to the spring forces, tearing of the perforations of the printing plate 14 cannot occur, that their ideal contact on the plate cylinder 12 is still ensured at high printing speeds, and at the same time an expansion compensation of the printing plate 14 can take place during the printing process.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP85101752A 1984-03-15 1985-02-16 Dispositif de tension des plaques d'impression Expired - Lifetime EP0154843B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843409479 DE3409479A1 (de) 1984-03-15 1984-03-15 Spannvorrichtungen fuer an deren in bogenlaufrichtung vorderen und hinteren kanten gelochte druckplatten fuer offsetdruckmaschinen
DE3409479 1984-03-15

Publications (3)

Publication Number Publication Date
EP0154843A2 true EP0154843A2 (fr) 1985-09-18
EP0154843A3 EP0154843A3 (en) 1987-09-16
EP0154843B1 EP0154843B1 (fr) 1990-05-02

Family

ID=6230565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85101752A Expired - Lifetime EP0154843B1 (fr) 1984-03-15 1985-02-16 Dispositif de tension des plaques d'impression

Country Status (4)

Country Link
US (1) US4688483A (fr)
EP (1) EP0154843B1 (fr)
JP (1) JPS60154131U (fr)
DE (1) DE3409479A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688483A (en) * 1984-03-15 1987-08-25 Heidelberger Druckmaschinen Ag Clamping device for a printing plate of an offset printing machine
GB2193685A (en) * 1986-07-17 1988-02-17 Ratby Eng Co Ltd Apparatus for controlling the position of a printing plate on a printing cylinder
US4785736A (en) * 1986-02-11 1988-11-22 Heidelberger Druckmaschinen Ag Device for tensioning a flexible printing plate mounted on a plate cylinder
US5097763A (en) * 1989-11-02 1992-03-24 Man Miller Druckmaschinen Gmbh Plate cylinder arrangement for a printing press
EP0490179A1 (fr) * 1990-12-06 1992-06-17 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Téton de postionnement axialement ajustable

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3731684A1 (de) * 1987-09-21 1989-04-06 Koenig & Bauer Ag Aufspannvorrichtung
US4890553A (en) * 1989-02-16 1990-01-02 Heath Custom Press, Inc. Positioning and attachment means for flexible printing plates
JPH04301457A (ja) * 1991-03-29 1992-10-26 Tokyo Electric Co Ltd オフセット印刷機
DE4210897C1 (fr) * 1992-04-02 1993-08-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US6026746A (en) * 1998-09-22 2000-02-22 E. R. Smith Associates, Inc. Lock-up assembly for plate cylinders of rotary presses
DE19950605A1 (de) * 1999-10-21 2001-04-26 Heidelberger Druckmasch Ag Gummituch mit Registerausnehmungen und Verfahren zur Gummituchausrichtung
DE102020123196A1 (de) 2020-09-04 2022-03-10 Kolbus Gmbh & Co. Kg Vorrichtung zum Spannen eines bogenförmigen Walzenbezugs um eine Walze
JP2022048678A (ja) * 2020-09-15 2022-03-28 富士フイルムビジネスイノベーション株式会社 胴部材及び画像形成装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH300967A (de) * 1951-04-26 1954-08-31 Gericke Erich Aufspannvorrichtung für Metallblätter an Offsetdruckmaschinen.
DE2431133A1 (de) * 1974-06-28 1976-01-15 Roland Offsetmaschf Druckplatten-spannvorrichtung
US4154167A (en) * 1977-04-08 1979-05-15 Beach Manufacturing Corporation Cam actuated printing saddle lockup
DE3127586C1 (de) * 1981-07-13 1982-12-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Spannvorrichtung zum Spannen von Druckplatten auf dem Plattenzylinder einer Druckmaschine
DE3144643A1 (de) * 1981-11-10 1983-05-19 Grapho-Metronic Meß- und Regeltechnik GmbH & Co KG, 8000 München Vorrichtung zum axialen justieren von in spannschienen eingespannten biegsamen druckplatten auf dem plattenzylinder

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB499809A (en) * 1937-06-10 1939-01-30 Addressograph Multigraph Means for attaching printing plates to drums
DE820313C (de) * 1949-07-10 1951-11-08 Rotaprint A G Druckmaschine mit Aufspannvorrichtungen fuer Druckblaetter mit Aufspannloechern
US2737887A (en) * 1951-04-26 1956-03-13 Gericke Erich Shiftable flexible sheet securing device
DE893343C (de) * 1951-04-27 1953-10-15 Erich Gericke Aufspannvorrichtung fuer Metallblaetter in Offsetdruckmaschinen
US3112698A (en) * 1961-01-03 1963-12-03 Addressograph Multigraph Printing machines
US3168040A (en) * 1962-07-18 1965-02-02 Harris Intertype Corp Plate clamp registering mechanism
GB1082639A (en) * 1964-08-29 1967-09-06 Zeuthen & Aagaard As Improvements in and relating to a mechanism for securing and aligning a master plate on a plate cylinder of a printing machine
JPS584670Y2 (ja) * 1980-04-17 1983-01-26 リヨ−ビ株式会社 オフセツト印刷機の版掛装置
US4459913A (en) * 1982-08-17 1984-07-17 A. B. Dick Company Adjustment structure for master holder
DE3409479A1 (de) * 1984-03-15 1985-09-26 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Spannvorrichtungen fuer an deren in bogenlaufrichtung vorderen und hinteren kanten gelochte druckplatten fuer offsetdruckmaschinen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH300967A (de) * 1951-04-26 1954-08-31 Gericke Erich Aufspannvorrichtung für Metallblätter an Offsetdruckmaschinen.
DE2431133A1 (de) * 1974-06-28 1976-01-15 Roland Offsetmaschf Druckplatten-spannvorrichtung
US4154167A (en) * 1977-04-08 1979-05-15 Beach Manufacturing Corporation Cam actuated printing saddle lockup
DE3127586C1 (de) * 1981-07-13 1982-12-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Spannvorrichtung zum Spannen von Druckplatten auf dem Plattenzylinder einer Druckmaschine
DE3144643A1 (de) * 1981-11-10 1983-05-19 Grapho-Metronic Meß- und Regeltechnik GmbH & Co KG, 8000 München Vorrichtung zum axialen justieren von in spannschienen eingespannten biegsamen druckplatten auf dem plattenzylinder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688483A (en) * 1984-03-15 1987-08-25 Heidelberger Druckmaschinen Ag Clamping device for a printing plate of an offset printing machine
US4785736A (en) * 1986-02-11 1988-11-22 Heidelberger Druckmaschinen Ag Device for tensioning a flexible printing plate mounted on a plate cylinder
GB2193685A (en) * 1986-07-17 1988-02-17 Ratby Eng Co Ltd Apparatus for controlling the position of a printing plate on a printing cylinder
US5097763A (en) * 1989-11-02 1992-03-24 Man Miller Druckmaschinen Gmbh Plate cylinder arrangement for a printing press
EP0490179A1 (fr) * 1990-12-06 1992-06-17 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Téton de postionnement axialement ajustable

Also Published As

Publication number Publication date
DE3409479A1 (de) 1985-09-26
JPH0432277Y2 (fr) 1992-08-03
JPS60154131U (ja) 1985-10-14
EP0154843B1 (fr) 1990-05-02
DE3409479C2 (fr) 1987-07-09
EP0154843A3 (en) 1987-09-16
US4688483A (en) 1987-08-25

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