EP0060939B1 - Plattenzylinder mit einer Plattenbefestigungsvorrichtung - Google Patents

Plattenzylinder mit einer Plattenbefestigungsvorrichtung Download PDF

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Publication number
EP0060939B1
EP0060939B1 EP81110438A EP81110438A EP0060939B1 EP 0060939 B1 EP0060939 B1 EP 0060939B1 EP 81110438 A EP81110438 A EP 81110438A EP 81110438 A EP81110438 A EP 81110438A EP 0060939 B1 EP0060939 B1 EP 0060939B1
Authority
EP
European Patent Office
Prior art keywords
plate
cover
cylinder
plate cylinder
printing 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.)
Expired
Application number
EP81110438A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0060939A1 (de
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/de
Application granted granted Critical
Publication of EP0060939B1 publication Critical patent/EP0060939B1/de
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 which has a cover approximately the same size as the edge of the printed product, the outer surface of which is curved according to a radius of curvature which corresponds to the radius of the outer surface of a clamped printing plate and has a water-accepting, ink-repellent surface.
  • US-A-1 927728 shows a plate cylinder of this type, in which the corners of the pressure plate bent by approximately 90 ° are clamped between strips, which in turn can be fixed to the plate cylinder by means of radially arranged screws.
  • the cylinder slot through which the strips and the screws are inserted is closed off to the outside by a strip-shaped cover.
  • the cover has a pin for fastening it at one end, which engages in a recess in the cylinder wall, while the other end is fixed by means of a retaining screw which can be inserted into the other cylinder wall.
  • a plate cylinder with a flattening is also known, the two edge areas of which each form a bearing surface for the two ends of the pressure plate.
  • the flattened portion has projections on which one end of the pressure plate, which has recesses, can be hung.
  • a one-piece cover can be placed on the flattened portion, which secures the suspended end of the pressure plate against lifting off and to which a cylindrical tensioning element running parallel to the cylinder axis is attached, which resiliently holds the other end 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 with a plate fastening device of the type mentioned, which is simple and space-saving and quick to operate while maintaining the advantages of avoiding bumps due to recessed parts of the cylinder and a small paper loss by using only fewer moving parts is and allows a separate definition of the two ends of the plate.
  • the plate cylinder according to the invention is preferably intended for use in offset web printing machines for printing newspapers and magazines.
  • 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 at an angle a of less than 45 ° relative 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 separate, individually definable cover strip 8, 9, which together form a cover for the slab Form 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 holding 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 supported on fixed parts of the plate fastening device 2 and which press the pressure pieces 16, 17 against the teeth 14, 15 of the retaining lugs 10, 11.
  • the cover strips 8, 9 can be attached to the plate cylinder 1 like 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.
  • the outer surfaces 20, 21 of the cover strips 8, 9 are curved according to a radius of curvature which corresponds to the radius of the outer surface of the clamped pressure plate 7.
  • the cover strips 8, 9 therefore complement the print-ready plate cylinder to a full cylinder.
  • 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 region 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 rubber cylinder, which in turn can excite vibrations, particularly in the case of longer plate cylinders.

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 Plattenzylinder mit einer Plattenbefestigungsvorrichtung Expired EP0060939B1 (de)

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 EP0060939A1 (de) 1982-09-29
EP0060939B1 true EP0060939B1 (de) 1984-11-28

Family

ID=6127857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110438A Expired EP0060939B1 (de) 1981-03-20 1981-12-15 Plattenzylinder mit einer Plattenbefestigungsvorrichtung

Country Status (4)

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

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326215C2 (de) * 1983-07-21 1986-04-03 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Aufspannen einer Druckplatte oder eines Gummituches
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
DE3644501A1 (de) * 1986-12-24 1988-07-07 Koenig & Bauer Ag Stuetzeinrichtung in einer zylindergrube
DE3705194A1 (de) * 1987-02-19 1988-09-01 Frankenthal Ag Albert Farbwerk
DE3918977A1 (de) * 1989-06-10 1990-12-20 Basf Ag Tiefdruckzylinder zum befestigen von biegsamen tiefdruckplatten
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
DE19521645C2 (de) * 1995-06-14 1998-07-09 Koenig & Bauer Albert Ag Einrichtung für eine schlitzförmige Haltevorrichtung
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

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD70107A (enrdf_load_stackoverflow) *
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
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
US2820409A (en) * 1955-09-02 1958-01-21 Bethel W Johnson Backing sheet clamping device for printing cylinders
JPS4936642B1 (enrdf_load_stackoverflow) * 1970-07-09 1974-10-02
SE403353B (sv) * 1977-02-28 1978-08-14 Daetwyler & Co M Med bojliga tryckplattor forsedd och i sin lengdriktning delad formcylinder for rotationsdjuptryckmaskiner
JPS55113080A (en) * 1979-02-25 1980-09-01 Konishiroku Photo Ind Co Ltd Master sheet mounting and dismounting device of drum

Also Published As

Publication number Publication date
EP0060939A1 (de) 1982-09-29
US4403549A (en) 1983-09-13
JPH0139352B2 (enrdf_load_stackoverflow) 1989-08-21
DE3167511D1 (en) 1985-01-10
DE3110982A1 (de) 1982-10-07
JPS57165263A (en) 1982-10-12

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