EP0177844B1 - Einrichtung zur Befestigung eines Gummituches an einem Gummituchzylinder - Google Patents

Einrichtung zur Befestigung eines Gummituches an einem Gummituchzylinder Download PDF

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Publication number
EP0177844B1
EP0177844B1 EP85112199A EP85112199A EP0177844B1 EP 0177844 B1 EP0177844 B1 EP 0177844B1 EP 85112199 A EP85112199 A EP 85112199A EP 85112199 A EP85112199 A EP 85112199A EP 0177844 B1 EP0177844 B1 EP 0177844B1
Authority
EP
European Patent Office
Prior art keywords
blanket
cylinder
cylinder slot
edge
width
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
EP85112199A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0177844A2 (de
EP0177844A3 (en
Inventor
Hermann Fischer
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 EP0177844A2 publication Critical patent/EP0177844A2/de
Publication of EP0177844A3 publication Critical patent/EP0177844A3/de
Application granted granted Critical
Publication of EP0177844B1 publication Critical patent/EP0177844B1/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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • 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
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • 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
    • B41F27/1281—Devices for attaching printing elements or formes to supports for attaching flexible printing formes details of the printing plate ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders

Definitions

  • the invention relates to a device for fastening the front and rear edge of a rubber blanket, each provided with a stiffening strip, to a rubber blanket cylinder of a rotary printing press, which has a pit which receives clamping means and is accessible from the outside through a narrow cylinder slot.
  • the stiffening strips run through the entire width of the rubber blanket.
  • the cylinder slot must be wide enough to allow insertion of the reinforcement strip of the rear blanket end with the front end of the blanket already inserted. So it must have at least a width that exceeds the thickness of the rubber blanket plus the thickness of a reinforcing bar.
  • a gap remains open between the two rubber blanket sections lying against the cylinder slot.
  • the invention has for its object to develop a device of the type mentioned in a simple manner by measures on existing parts so that a collapse of the interacting cylinders and thus short-term, strong changes in the pressure force between these cylinders can be avoided.
  • the 1 comprises two blanket cylinders 1, 2 and two plate cylinders 3, 4. Between the blanket cylinders 1, 2, a web 5 is printed on both sides with one color each. Each of the two blanket cylinders 1, 2 has a pit 6, 7, which receives clamping means known per se, with which a blanket can be stretched.
  • the plate cylinders 3, 4 also have pits 8, 9 for tensioning the plates.
  • the blanket cylinder 1 has a narrow cylinder slot, generally designated 10, which enables access to the pit 6 receiving the clamping means.
  • the cylinder slot 10 has a wider central region 11 and a narrower edge region 12 and 13 at each end.
  • the cylinder slot 10 is shown enlarged in Fig. 3 for reasons of better visibility.
  • a rubber blanket 14 is stretched onto the rubber blanket cylinder 1, the front and rear edges of which each carry a stiffening strip 15, 16.
  • the length of each stiffening strip 15, 16 is shorter than the width of the rubber blanket.
  • the distances from the end of the stiffening strips 15, 16 to the associated side edge 17 or 18 of the rubber blanket 14 are expediently chosen to be the same.
  • the stiffening strip of the leading edge can run continuously over the entire width of the rubber blanket and only the stiffening strip of the trailing edge can be shortened.
  • the leading edge is the edge of the rubber blanket that is the first to be inserted into the pit. Accordingly, the trailing edge is the edge that is only introduced into the pit after the leading edge has been introduced.
  • the rubber blanket 14 comprises a textile braid layer 23 and an ink-transferring cover layer 24, then its end sections 25, 26 located in the open state within the cylinder slot 10 and the pit 6 expediently consist only of the textile braid layer 23. This results in the possibility of the width of the cylinder slot 10 decrease further.
  • the two edge regions 12, 13 of the cylinder slot 10 are dimensioned such that their width is approximately equal to twice the thickness of the rubber blanket 14. When the rubber blanket is stretched, the edge regions 12, 13 are therefore filled by the rubber blanket.
  • the central region 11 of the cylinder slot 10, is dimensioned so wide that, in addition to a position of the rubber blanket, the rear stiffening strip 16 can be inserted into the cylinder pit. With a rubber blanket thickness of 1.9 mm and a thickness of the stiffening strip of approximately 1 mm, the cylinder slot in the edge regions 12, 13 can have a width of 3.8 to 4 mm, while the central region 11 is approximately 5 to 6 mm wide.
  • the cylinder slot can also be made 1 to 2 mm wider.
  • the end sections 25, 26 of which consist only of the textile braid layer 23 the aforementioned widths of the cylinder slot 10 can be reduced again by the measure of the thickness of the cover layer 24.
  • the length of the central region 11 corresponds to the length of the stiffening strip 16. Between the central region 11 and the edge regions 12, 13, as shown in FIG. 3, an oblique transition can be provided.
  • the blanket cylinder 2 can be designed in the same way as the blanket cylinder 1.
  • the force with which the two cylinders are positioned against one another is transmitted entirely or, if the cylinders are provided with bearer rings, to a significant extent via the blankets. If the cylinder slots 10 of the two pits 6, 7 converge, the pressure force can continue to be transmitted in the edge areas 12, 13 of the cylinder slots 10 from the rubber blankets, since these at least largely fill the edge areas 12, 13. This prevents the cylinders from collapsing in the edge regions 12, 13 and the resulting vibration excitation. If the cylinder is rigid enough, this has an effect across the entire cylinder width. In addition, at the transition points between the two edge regions 12, 13 and the central region 11, a build-up of force takes place only gradually and not suddenly after passing through the cylinder slot 10. This phenomenon also counteracts vibration excitation.
  • the desired effect can be further improved in that the edge regions 12, 13 are offset relative to one another as a result of the oblique arrangement of the central longitudinal axis B-B of the cylinder slot 10 with respect to the central longitudinal axis A-A of the cylinder 1.
  • any narrow gap in the edge areas does not have an effect on both sides at the same time.
  • the wider central region of the cylinder slot 10 also runs slightly obliquely, so that this also results in a time offset of the build-up of force over the entire width of the cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP85112199A 1984-10-11 1985-09-26 Einrichtung zur Befestigung eines Gummituches an einem Gummituchzylinder Expired EP0177844B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843437309 DE3437309A1 (de) 1984-10-11 1984-10-11 Einrichtung zur befestigung eines gummituches an einem gummituchzylinder
DE3437309 1984-10-11

Publications (3)

Publication Number Publication Date
EP0177844A2 EP0177844A2 (de) 1986-04-16
EP0177844A3 EP0177844A3 (en) 1987-08-19
EP0177844B1 true EP0177844B1 (de) 1989-09-13

Family

ID=6247650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112199A Expired EP0177844B1 (de) 1984-10-11 1985-09-26 Einrichtung zur Befestigung eines Gummituches an einem Gummituchzylinder

Country Status (4)

Country Link
US (1) US4648318A (enrdf_load_stackoverflow)
EP (1) EP0177844B1 (enrdf_load_stackoverflow)
JP (1) JPS6195944A (enrdf_load_stackoverflow)
DE (2) DE3437309A1 (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899657A (en) * 1987-01-12 1990-02-13 Mitsubishi Paper Mills, Ltd. Method for preventing penetration of damping solution between supporting base and plate
JPH01192740A (ja) * 1988-01-27 1989-08-02 Sumitomo Electric Ind Ltd 光ファイバ線引き方法及び光ファイバ線引き装置
US5038680A (en) * 1989-12-18 1991-08-13 Rockwell International Corporation Printing press blanket cylinder assembly and method of making same
CH682382A5 (fr) * 1990-04-25 1993-09-15 Bobst Sa Procédé de montage et de fixation d'une plaque d'impression sur le cylindre porte-plaque d'une machine d'impression.
USD330379S (en) 1990-06-15 1992-10-20 Hoover James A Sanding drum
US5979322A (en) * 1996-05-07 1999-11-09 Demoore; Howard Warren Environmentally safe, ink repellent, anti-marking flexible jacket covering having alignment stripes, centering marks and pre-fabricated reinforcement strips for attachment onto transfer cylinders in a printing press
DE19950605A1 (de) * 1999-10-21 2001-04-26 Heidelberger Druckmasch Ag Gummituch mit Registerausnehmungen und Verfahren zur Gummituchausrichtung
JP3457932B2 (ja) * 2000-07-31 2003-10-20 三菱重工業株式会社 円筒状ブランケット及びブランケット胴並びに印刷機
WO2002047980A2 (en) * 2000-10-30 2002-06-20 Pactiv Corporation Laser for forming bags from a web of material
US7367931B2 (en) * 2000-10-30 2008-05-06 Pactiv Corporation Laser cutoff stacker assembly
DE10222225A1 (de) 2002-05-16 2003-12-04 Heidelberger Druckmasch Ag Zylinderaufzug und Verfahren zum Befestigen eines Zylinderaufzugs in einer Druckmaschine
DE10228971B4 (de) * 2002-06-26 2009-12-31 Koenig & Bauer Aktiengesellschaft Biegsamer Aufzug zur Verwendung auf einem Zylinder einer Rotationsdruckmaschine
JP2006305788A (ja) * 2005-04-27 2006-11-09 Komori Corp 液体供給装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD58517A (enrdf_load_stackoverflow) *
US1047771A (en) * 1912-04-17 1912-12-17 Glenn S Williamson Sole-plate for cylinders.
US1454006A (en) * 1915-03-11 1923-05-01 Wood Newspaper Mach Corp Tail-cutting device for tubular plates
US1662232A (en) * 1926-04-17 1928-03-13 Charles M Bremner Printing-plate holding means
US1773949A (en) * 1928-08-10 1930-08-26 Oxford Varnish Corp Photogravure roll
US2259475A (en) * 1940-04-10 1941-10-21 Koppers Co Inc Apparatus for reconditioning engine cylinders
US2480373A (en) * 1946-06-13 1949-08-30 Goss Printing Press Co Ltd Plate locking clip assembly
US2627229A (en) * 1948-10-01 1953-02-03 Maschf Augsburg Nuernberg Ag Plate cylinder for rotary printing machines
DE1124051B (de) * 1955-04-22 1962-02-22 Fred K H Levey Company Inc Vorrichtung zum Befestigen des Gummituches auf dem Gummizylinder
US3166012A (en) * 1962-08-22 1965-01-19 Hantscho Co George Coacting cylinders having skewed gaps to maintain balanced pressure contact
DE1213430B (de) * 1963-06-21 1966-03-31 Hedwig Oettinger Geb Paul Vorrichtung zum Befestigen eines Klischees auf dem Formzylinder einer Rotationsdruckmaschine
DE1939653U (de) * 1964-08-22 1966-06-02 Frithjof Turzschke Elastisch zusammendrueckbare unterlage fuer gummitucher bei offsetdruckmaschinen.
FR1467978A (fr) * 1965-12-24 1967-02-03 Marinoni Perfectionnement aux gorges des cylindres des machines à imprimer du type rotatives-offset
US4133146A (en) * 1977-06-22 1979-01-09 Cola Charles R De Rotary abrasive tool
US4466349A (en) * 1981-12-21 1984-08-21 Bartlett Norman C Cylinder construction for a printing press
DE3326215C2 (de) * 1983-07-21 1986-04-03 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Aufspannen einer Druckplatte oder eines Gummituches

Also Published As

Publication number Publication date
EP0177844A2 (de) 1986-04-16
EP0177844A3 (en) 1987-08-19
JPS6195944A (ja) 1986-05-14
DE3437309A1 (de) 1986-04-17
DE3572945D1 (en) 1989-10-19
DE3437309C2 (enrdf_load_stackoverflow) 1988-05-19
JPH0584217B2 (enrdf_load_stackoverflow) 1993-12-01
US4648318A (en) 1987-03-10

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