EP0060939A1 - Cylindre de plaque avec dispositif de fixation des plaques - Google Patents

Cylindre de plaque avec dispositif de fixation des plaques Download PDF

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Publication number
EP0060939A1
EP0060939A1 EP81110438A EP81110438A EP0060939A1 EP 0060939 A1 EP0060939 A1 EP 0060939A1 EP 81110438 A EP81110438 A EP 81110438A EP 81110438 A EP81110438 A EP 81110438A EP 0060939 A1 EP0060939 A1 EP 0060939A1
Authority
EP
European Patent Office
Prior art keywords
plate
cover
cylinder
plate cylinder
pressure plate
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
EP81110438A
Other languages
German (de)
English (en)
Other versions
EP0060939B1 (fr
Inventor
Walter Dr. Matuschke
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 EP0060939A1 publication Critical patent/EP0060939A1/fr
Application granted granted Critical
Publication of EP0060939B1 publication Critical patent/EP0060939B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means
    • 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

Definitions

  • the invention relates to a plate cylinder with a plate fastening device, in which the two ends of the pressure plate rest on support surfaces which are inclined at an angle of less than 45 ° with respect to the tangent to the cylinder circumference at the point of intersection with the support surface, which means by means of recesses in the Pressure plate engaging projections are secured against displacement and are held on the bearing surfaces by means of a cover.
  • Such a plate cylinder known from DE-AS 21 33 890 has a flattening, the two edge regions of which each form a support surface for the end regions of the printing plate.
  • a cover can be placed on the flattening, which secures the end areas of the pressure plate lying on the support surfaces against lifting off.
  • In the middle of the cover there is a cylindrical clamping element running parallel to the cylinder axis, which acts on one end region of the pressure plate.
  • the outer surface of the cover is set back from the outer circumference of the printing cylinder covered with a printing plate.
  • the invention has for its object to provide a plate cylinder for web offset printing machines for printing newspapers and magazines with a simply constructed plate fastening device, in which both impacts caused by the passage of recessed parts of the cylinder, in particular on the blanket cylinder, as well as paper losses are avoided by wider cylinder pits for receiving the plate fasteners.
  • this object is achieved by applying the measures specified in the characterizing part of claim 1.
  • a plate fastening device is inserted in the plate cylinder, generally designated 1.
  • the plate fastening device 2 has two contact surfaces 3, 4, which are arranged inclined at an angle ⁇ of less than 45 ° with respect to the tangent to the circumference of the plate cylinder at the point of intersection with the respective contact surface.
  • the contact surfaces 3, 4 enclose an obtuse angle between them, which should be chosen as large as possible.
  • Protrusions 5, 6, for example pins protrude from each support surface 3, 4, which engage in recesses in a clamped pressure plate 7 in order to precisely fix it in position.
  • the width of each contact surface between the outer circumference of the plate cylinder 1 and the line of contact with the second contact surface is approximately equal to the edge of the printed product.
  • Each support surface 3, 4 is assigned a cover strip 8, 9, which together form a cover for the plate fastening device 2 to the outside.
  • each cover strip 8, 9 has retaining lugs 10, 11, each of which can be inserted into a slot 12, 13 of the fastening device.
  • the retaining lugs 10, 11 have toothings 14, 15 which can engage in toothings of pressure pieces 16, 17 of the same design.
  • the pressure pieces 16, 17 are under the action of compression springs 18, 19, which are on fixed parts of the Support plate fastening device 2 and press the pressure pieces 16, 17 against the toothing 14, 15 of the retaining lugs 10, 11.
  • the cover strips 8, 9 can thus be fastened to the plate cylinder 1 in the manner of a push button.
  • the invention can also be carried out with other holding means for the cover strips, for example with magnets which hold the cover strips in the desired position.
  • the cover strips 8, 9 also have cutouts 22, 23, into which the projections 5, 6 protrude when the pressure plate is clamped.
  • each outer surface of the cover strips 8, 9 has a water-accepting, ink-repellent surface. This can be achieved, for example, by graining the outer surfaces of the cover strips 8, 9 made of steel. The measure ensures that when the cylinder runs along the inking rollers in the area of the cover strips 8, 9, no ink is accepted, so that clean edges of the printed product result.
  • the design of the plate cylinder 1, which is occupied by a pressure plate 7, as a full cylinder further eliminates depressions in the outer surface of the plate cylinder 1, which, when this cylinder expires, leads to impacts, for example, on the adjacent blanket cylinder, which in turn can excite vibrations, particularly in the case of longer plate cylinders.
  • the cover consists of two separate cover strips 8, 9 exists.
  • the two cover strips 8, 9 could also be combined into one part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP81110438A 1981-03-20 1981-12-15 Cylindre de plaque avec dispositif de fixation des plaques Expired EP0060939B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3110982 1981-03-20
DE19813110982 DE3110982A1 (de) 1981-03-20 1981-03-20 Plattenzylinder mit einer plattenbefestigungsvorrichtung

Publications (2)

Publication Number Publication Date
EP0060939A1 true EP0060939A1 (fr) 1982-09-29
EP0060939B1 EP0060939B1 (fr) 1984-11-28

Family

ID=6127857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110438A Expired EP0060939B1 (fr) 1981-03-20 1981-12-15 Cylindre de plaque avec dispositif de fixation des plaques

Country Status (4)

Country Link
US (1) US4403549A (fr)
EP (1) EP0060939B1 (fr)
JP (1) JPS57165263A (fr)
DE (2) DE3110982A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0132532A1 (fr) * 1983-07-21 1985-02-13 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Cylindre pour une machine rotative d'impression
EP0272526A2 (fr) * 1986-12-24 1988-06-29 Koenig & Bauer Aktiengesellschaft Dispositif de soutien dans l'évidement d'un cylindre
EP0279295A2 (fr) * 1987-02-19 1988-08-24 Albert-Frankenthal AG Unité d'encrage
EP0403867A2 (fr) * 1989-06-10 1990-12-27 BASF Aktiengesellschaft Cylindre gravé pour la fixation des plaques gravées flexibles
US5669306A (en) * 1995-06-14 1997-09-23 Koenig & Bauer-Albert Aktiengesellschaft Rubber blanket unit fastening device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643093A (en) * 1985-03-01 1987-02-17 Minnesota Mining And Manufacturing Company Double-creased lithoplate and method of mounting on a web press
DE3540581A1 (de) * 1985-11-15 1987-05-21 Roland Man Druckmasch Druckwerkzylinder mit einem in dessen zylindergrube angeordneten fuellstueck
DE3928640A1 (de) * 1989-08-30 1991-03-14 Roland Man Druckmasch Gummituchzylinder fuer bogenrotations-offsetdruckmaschinen
US5038680A (en) * 1989-12-18 1991-08-13 Rockwell International Corporation Printing press blanket cylinder assembly and method of making same
DE4102858A1 (de) * 1990-03-08 1991-09-12 Heidelberger Druckmasch Ag Druckwerkszylinder fuer rotationsdruckmaschinen
GB9509477D0 (en) * 1995-05-10 1995-07-05 Btr Plc Printing press cylinders
DE10250684B3 (de) * 2002-10-31 2004-04-01 Koenig & Bauer Ag Verfahren zur Herstellung eines Rotationskörpers und Rotationskörper einer Druckmaschine
DE102004042342B4 (de) * 2004-09-01 2008-02-14 Maschinenfabrik Wifag Spanneinrichtung für einen Spannkanal eines Zylinderkörpers, Druckformzylinder und Verfahren zur Herstellung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1927728A (en) * 1929-07-01 1933-09-19 Wolff Fritz Form cylinder for offset-printing machines
US1996348A (en) * 1930-09-12 1935-04-02 Robinson Leslie Thomas Albert Printing cylinder and design sheet for use therewith
DE2133890A1 (de) * 1970-07-09 1972-02-17 Fuji Photo Film Co Ltd Einrichtung zur Befestigung von Färb ubertragungs Matrizen an Druckplattenzy lindern
FR2381624A1 (fr) * 1977-02-28 1978-09-22 Daetwyler & Co M Cylindre porte-cliches pour rotatives d'heliogravure, pourvu de plaques flexibles
DE3006978A1 (de) * 1979-02-25 1980-09-04 Konishiroku Photo Ind Vorrichtung zur abnehmbaren anbringung einer matrize, schablone o.dgl. an der trommel eines kopiergeraetes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD70107A (fr) *
US1107772A (en) * 1913-12-22 1914-08-18 Mary D Taylor Printing-press.
US1471392A (en) * 1920-11-29 1923-10-23 Fleming Stuart Zinc-plate cylinder for offset lithographing presses
US2820409A (en) * 1955-09-02 1958-01-21 Bethel W Johnson Backing sheet clamping device for printing cylinders

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1927728A (en) * 1929-07-01 1933-09-19 Wolff Fritz Form cylinder for offset-printing machines
US1996348A (en) * 1930-09-12 1935-04-02 Robinson Leslie Thomas Albert Printing cylinder and design sheet for use therewith
DE2133890A1 (de) * 1970-07-09 1972-02-17 Fuji Photo Film Co Ltd Einrichtung zur Befestigung von Färb ubertragungs Matrizen an Druckplattenzy lindern
FR2381624A1 (fr) * 1977-02-28 1978-09-22 Daetwyler & Co M Cylindre porte-cliches pour rotatives d'heliogravure, pourvu de plaques flexibles
DE3006978A1 (de) * 1979-02-25 1980-09-04 Konishiroku Photo Ind Vorrichtung zur abnehmbaren anbringung einer matrize, schablone o.dgl. an der trommel eines kopiergeraetes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0132532A1 (fr) * 1983-07-21 1985-02-13 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Cylindre pour une machine rotative d'impression
US4510868A (en) * 1983-07-21 1985-04-16 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Circumferentially continuous cylinder for a rotary printing machine
EP0272526A2 (fr) * 1986-12-24 1988-06-29 Koenig & Bauer Aktiengesellschaft Dispositif de soutien dans l'évidement d'un cylindre
EP0272526A3 (en) * 1986-12-24 1989-09-20 Koenig & Bauer Aktiengesellschaft Supporting device in a cylinder gap
EP0479266A1 (fr) * 1986-12-24 1992-04-08 Koenig & Bauer Aktiengesellschaft Dispositif de soutien dans l'évidement d'un cylindre
EP0279295A2 (fr) * 1987-02-19 1988-08-24 Albert-Frankenthal AG Unité d'encrage
DE3705194A1 (de) * 1987-02-19 1988-09-01 Frankenthal Ag Albert Farbwerk
EP0279295A3 (en) * 1987-02-19 1990-02-14 Albert-Frankenthal Ag Inking unit
EP0403867A2 (fr) * 1989-06-10 1990-12-27 BASF Aktiengesellschaft Cylindre gravé pour la fixation des plaques gravées flexibles
EP0403867A3 (fr) * 1989-06-10 1991-06-12 BASF Aktiengesellschaft Cylindre gravé pour la fixation des plaques gravées flexibles
US5669306A (en) * 1995-06-14 1997-09-23 Koenig & Bauer-Albert Aktiengesellschaft Rubber blanket unit fastening device

Also Published As

Publication number Publication date
DE3167511D1 (en) 1985-01-10
JPS57165263A (en) 1982-10-12
JPH0139352B2 (fr) 1989-08-21
DE3110982A1 (de) 1982-10-07
US4403549A (en) 1983-09-13
EP0060939B1 (fr) 1984-11-28

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