EP0771270A1 - Procede et dispositif de fixation et de tension d'un habillage sur un cylindre d'une presse rotative - Google Patents

Procede et dispositif de fixation et de tension d'un habillage sur un cylindre d'une presse rotative

Info

Publication number
EP0771270A1
EP0771270A1 EP95925684A EP95925684A EP0771270A1 EP 0771270 A1 EP0771270 A1 EP 0771270A1 EP 95925684 A EP95925684 A EP 95925684A EP 95925684 A EP95925684 A EP 95925684A EP 0771270 A1 EP0771270 A1 EP 0771270A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
elevator
pit
thickness
tensioning
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
EP95925684A
Other languages
German (de)
English (en)
Other versions
EP0771270B1 (fr
Inventor
Helmut Holm
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert 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 Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0771270A1 publication Critical patent/EP0771270A1/fr
Application granted granted Critical
Publication of EP0771270B1 publication Critical patent/EP0771270B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1237—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially perpendicular to support surface

Definitions

  • the invention relates to a method and an apparatus for fastening and tensioning an elevator on a cylinder of a rotary printing press.
  • a longi tudi na ler and radial incision is formed as a cylinder pit in a cylinder of a printing press.
  • a clamping bar can be moved radially using clamping screws.
  • This tension bar is provided with shoulders offset from one another for the start and end of printing. By means of these shoulders, cattle are held in place by attachments which are fastened to the respective ends of the elevator.
  • DE 37 07 066 C2 shows a tensioning device for the positive fastening of an elevator to the cylinder of a rotary printing press.
  • the cylinder has an axially parallel pit running in the cylinder jacket with a clamping bar that can be moved radially inward during the clamping process.
  • This tensioning bar is provided on both sides of its upper part with a recess for receiving reinforced ends of the elevator.
  • the invention is based on the object / to provide a method and a tension-free device for fastening and tensioning an elevator on a cylinder of a rotary printing press / with or with which a one-sided loosening of the elevator occurring at the end of printing due to pressing processes occurs during the pressing can be eliminated.
  • An elevator of a cylinder can advantageously be retensioned at the end of the print.
  • flexing processes that occur during printing. These flexing processes begin at the beginning of the print and roll the elevator towards the end of the print, which loosens the end of the lift located at the print end.
  • a single re-tensioning is usually sufficient, but it can also be re-tensioned several times.
  • the different length of the side legs of the hanging rails is also advantageous, since damage is avoided even when the hanging rails are offset from the lift when the elevator is under tension.
  • the tensioning strip is characterized by a particularly simple and inexpensive component to be produced.
  • the device according to the invention is shown in the drawing and is described in more detail below.
  • the drawing shows a schematic radial section of the device according to the invention.
  • a cylinder 1, preferably a rubber cylinder 1, of a rotary printing press has a cylinder length running parallel to its axis of rotation extending cylinder pit 2.
  • This cylinder pit 2 is formed as a U-shaped groove extending radially in the direction of the axis of rotation of the cylinder 1 from a lateral surface 3 of the cylinder 1.
  • the cylinder pit 2 of width bl and height hl is delimited by two parallel, approximately radially running side surfaces 4, 6 of height hl and a base surface 7 of width bl lying perpendicular to these side surfaces 4, 6.
  • This groove 9 has two side surfaces 11, 12 of the width b2 parallel to the base 7 of the cylinder pit 2 and a base 13 of the height h2 parallel to the side surfaces 4, 6 of the cylinder pit 2.
  • a plurality of blind hole-like threaded bores 14 are radially introduced into the base area 7 of the cylinder pit 2 at uniform intervals along the cylinder length.
  • An elevator 16 in particular a rubber blanket 16 of thickness d1
  • the two ends 17, 18 are each reinforced or framed, for example by means of the hanging rails 21, 22 surrounding the respective end 17, 18 on three sides.
  • These hanging rails 21, 22 extend along the cylinder pit 2 and can be U-shaped from metal or dimensionally stable Be made of plastic.
  • 24 of the blanket 16 adjacent inner side surfaces 26, 27, 28, 29 of right and left side legs 31, 32, 33, 34 of the U-shaped hanging rails 21, 22 can be profiled, ie provided with elevations in order to obtain a form fit in addition to a frictional engagement achieved by compressing the suspension rails 21, 22.
  • the suspension rails 21, 22 can also be connected to the ends 17, 18 of the rubber blanket 16 by means of an adhesive connection or by vulcanization.
  • the side legs 31, 32, 33, 34 of thickness d2 are approximately this thickness d2 above the surface of the rubber blanket and thus each form a pressure surface 36, 37, 38, 39 which is perpendicular to the respective side leg 31, 32, 33, 34.
  • Die Thickness d2 of the side legs 31, 32, 33, 34 is smaller than the thickness dl of the rubber blanket 16.
  • the hanging rails 21, 22 can each have side legs 31, 32, 33, 34 of different lengths.
  • the side leg 32 facing the side surface 6 of the cylinder pit 2 is shorter than the opposite side leg 31 of the hanging rail 21 by at least the thickness dl of the rubber blanket 21 at least by the thickness dl of the rubber blanket 16 shorter than the opposite side leg 34 of the hanging rail 22.
  • the formation of the hanging rails 21, 22 prevents damage to the rubber blanket 16 by the hanging rails 21, 22 during the tensioning process.
  • An over the cylinder length, parallel to the axis of rotation of the cylinder 1 extending clamping bar 41 has z. B. a rectangular cross section of width b3 and height h3. This width b3 corresponds approximately to the width bl of the cylinder pit 2 minus twice the thickness dl of the rubber blanket 16.
  • the rectangular cross section of the tensioning strip 41 is formed by two side faces 42, 43 parallel to the side faces 4, 6 of the cylinder pit 2 and one each to the base area 7 of the cylinder pit 2 parallel upper and lower base 44, 46 is formed.
  • through bores 47 are provided in this clamping bar 41. With the threaded bores 14 of the base 7 of the cylinder pit 2, tension bolts 48 projecting through the through bores 47 of the tensioning strip 41 interact.
  • the tensioning strip 41 including the tensioning screws 48 is removed from the cylinder pit 2.
  • the rubber blanket 16 is placed on the outer surface 3 of the cylinder 1 and the ends 17, 18 of the rubber blanket 16 are folded into the cylinder pit 2 so as to lie against the corresponding side surfaces 4, 6.
  • the clamping line 41 is associated with the associated Tensioning screws 48 inserted into the cylinder pit 2.
  • the clamping screws 48 are screwed into the threaded bores 14 of the base 7 of the cylinder pit 2, as a result of which the clamping bar 41 is moved radially inward in the direction of the axis of rotation of the cylinder 1.
  • the lower base surface 46 of the clamping bar 41 presses against the respective pressure surfaces 36, 39 of the side legs 31, 34 of the hanging rails 21, 22.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

Un dispositif de fixation et de tension d'un habillage (16) sur un cylindre (1) d'une presse rotative doit permettre de tendre l'habillage (16) en particulier au blanc de queue d'impression (17, 18). A cet effet, un rail d'accrochage (21, 22), fixe par rapport au cylindre, est monté au niveau du blanc de tête d'impression (8).
EP95925684A 1994-07-16 1995-07-13 Procede et dispositif de fixation et de tension d'un habillage sur un cylindre d'une presse rotative Expired - Lifetime EP0771270B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4425189A DE4425189C1 (de) 1994-07-16 1994-07-16 Verfahren und Vorrichtung zum Befestigen und Spannen eines Aufzuges auf einem Zylinder einer Rotationsdruckmaschine
DE4425189 1994-07-16
PCT/DE1995/000913 WO1996002391A1 (fr) 1994-07-16 1995-07-13 Procede et dispositif de fixation et de tension d'un habillage sur un cylindre d'une presse rotative

Publications (2)

Publication Number Publication Date
EP0771270A1 true EP0771270A1 (fr) 1997-05-07
EP0771270B1 EP0771270B1 (fr) 1998-04-15

Family

ID=6523353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95925684A Expired - Lifetime EP0771270B1 (fr) 1994-07-16 1995-07-13 Procede et dispositif de fixation et de tension d'un habillage sur un cylindre d'une presse rotative

Country Status (5)

Country Link
US (1) US5809889A (fr)
EP (1) EP0771270B1 (fr)
JP (1) JP2846123B2 (fr)
DE (2) DE4425189C1 (fr)
WO (1) WO1996002391A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19616337C2 (de) * 1996-04-24 1999-04-15 Roland Man Druckmasch Verfahren und Vorrichtung zum Befestigen und Spannen eines Drucktuches
DE19741092C2 (de) * 1997-09-18 2001-02-01 Koenig & Bauer Ag Spanneinrichtung
DE19860477C2 (de) * 1998-12-28 2001-02-01 Koenig & Bauer Ag Gummituch und Vorrichtung zum Befestigen und Spannen dieses Gummituches
DE10220548B4 (de) * 2002-05-08 2004-05-27 Koenig & Bauer Ag Befestigung eines biegsamen Aufzugs auf einem Zylinder einer Rotationsdruckmaschine
DE10224375A1 (de) * 2002-06-01 2003-12-11 Koenig & Bauer Ag Gummituch
JP7459571B2 (ja) * 2020-03-05 2024-04-02 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

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE407871C (de) * 1922-02-24 1925-01-03 A W Penrose & Co Ltd Verfahren zum Befestigen eines Druckbleches auf einem Formzylinder und Formzylinder zur Ausfuehrung des Verfahrens
US1582390A (en) * 1923-01-18 1926-04-27 Evans Arthur Burroughes Printing machine
DE431764C (de) * 1924-06-26 1926-07-17 A W Penrose & Company Ltd Vorrichtung zum Befestigen biegsamer Tiefdruckplatten bei Rotationsdruckmaschinen
US2729164A (en) * 1948-06-17 1956-01-03 Laszlo M Stempel Transfer printing mechanism
US2885958A (en) * 1954-10-25 1959-05-12 Harris Intertype Corp Printing plate mounting means
US3296673A (en) * 1964-05-04 1967-01-10 Alven D Kirkpatrick Printing blanket edging and anchoring means
US3495531A (en) * 1966-01-17 1970-02-17 Chandler & Price Co Web press with fountain roller and ductor roller drive
GB1269539A (en) * 1968-09-26 1972-04-06 Dayco Corp Apparatus for mounting a printing blanket on a printing press cylinder
US3584580A (en) * 1969-08-25 1971-06-15 Leipzig Veb Druckmasch Werke Rubber sheet tensioning device for offset printing machines
US4337700A (en) * 1980-05-30 1982-07-06 Pathfinder Graphic Associates, Inc. Blanket cylinder construction for printing press
DE3109859C2 (de) * 1981-03-14 1983-05-11 Albert-Frankenthal Ag, 6710 Frankenthal Gummituchspannvorrichtung
FR2527983B1 (fr) * 1982-06-04 1986-06-06 Creusot Loire Dispositif de fixation de l'habillage d'un cylindre de machine d'impression
US4833986A (en) * 1987-03-05 1989-05-30 M.A.N. Roland Druckmaschinen Ag Holding and tensioning system for a cover layer on a printing machine cylinder
DE3707066A1 (de) * 1987-03-05 1988-09-15 Roland Man Druckmasch Spannvorrichtung zur befestigung eines aufzuges am zylinder einer rotationsdruckmaschine
DE4210778C2 (de) * 1992-04-01 1994-03-31 Roland Man Druckmasch Sicherungsvorrichtung für Spannschienen zum Spannen von Gummitüchern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9602391A1 *

Also Published As

Publication number Publication date
DE4425189C1 (de) 1996-02-01
JPH09507659A (ja) 1997-08-05
EP0771270B1 (fr) 1998-04-15
DE59501928D1 (de) 1998-05-20
US5809889A (en) 1998-09-22
JP2846123B2 (ja) 1999-01-13
WO1996002391A1 (fr) 1996-02-01

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