EP0771270B1 - 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 Download PDF

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Publication number
EP0771270B1
EP0771270B1 EP95925684A EP95925684A EP0771270B1 EP 0771270 B1 EP0771270 B1 EP 0771270B1 EP 95925684 A EP95925684 A EP 95925684A EP 95925684 A EP95925684 A EP 95925684A EP 0771270 B1 EP0771270 B1 EP 0771270B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
hang
tensioning
strip
covering
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 - Lifetime
Application number
EP95925684A
Other languages
German (de)
English (en)
Other versions
EP0771270A1 (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

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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 Device for fastening and tensioning an elevator on a cylinder of a rotary printing press.
  • EP 00 99 275 B1 is a generic one Device for fastening and tensioning an elevator known.
  • a cylinder of a printing press longitudinal and radial incision as a cylinder pit educated.
  • this cylinder pit can be Clamping screws are moved radially around a clamping bar.
  • This clamping bar is offset from one another Provide shoulders for print start and print end. With these shoulders, edges of Hanging rails at the respective ends of the Elevator are attached, held.
  • DE 37 07 066 C2 shows a tensioning device positive locking of an elevator to the cylinder a rotary printing press.
  • the cylinder has one axially parallel pit running in the cylinder jacket one that can be moved radially inward during the clamping process Tension bar on.
  • This tension bar is on its upper part with a recess on each side for receiving provided by reinforced ends of the elevator.
  • a disadvantage of these known devices is that due to occurring walking processes during the first time Printing after the lift is put on unilateral loosening of the elevator is not compensated can be. Only two can be used in these devices Ends are stretched evenly, but by a large one Stiction of the elevator on the cylinder is a Balance between the two ends is not possible. Consequently either the loose end does not meet the requirements be tensioned accordingly or the fixed end will overstretched, d. H. destroyed. A removal or Tear out the reinforced ends.
  • the invention has for its object a method and a spindle-free device for fastening and Tensioning an elevator on a cylinder one To create rotary printing press, with or with the a due to flexing that occurs during printing arising unilateral loosening of the elevator on End of printing can be eliminated.
  • this object is achieved by a method or a device for fastening and tensioning a Elevator on a cylinder of a rotary printing press with the characteristics of the characteristic part of the Claim 1 or claim 2 solved.
  • An elevator of a cylinder can advantageously be retensioned at the end of the print.
  • the tensioned and tensioned lifts of a cylinder of a rotary printing press are loosened by 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.
  • 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 suspension rails is also advantageous, since damage is avoided even when the suspension rails are offset from the elevator 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 in the drawing shown and is described in more detail below.
  • the drawing shows a schematic radial section the device according to the invention.
  • a cylinder 1, preferably a rubber cylinder 1, of a rotary printing press has a cylinder pit 2 which extends parallel to its axis of rotation and extends over the cylinder length.
  • 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 b1 and height h1 is delimited by two parallel, approximately radially running side surfaces 4, 6 of height h1 and a base surface 7 of width b1 lying perpendicular to these side surfaces 4, 6.
  • This groove 9 has two side faces 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 faces 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 mounting rails 21, 22 surrounding the respective end 17, 18 on three sides.
  • These mounting rails 21, 22 extend along the cylinder pit 2 and can be U-shaped from metal or dimensionally stable Be made of plastic.
  • 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 by at least the thickness d1 of the rubber blanket 2 than the opposite side leg 31 of the hanging rail 21.
  • the side leg 33 facing the side surface 4 of the cylinder pit 2 is shorter at least by the thickness d1 of the rubber blanket 16 shorter than the opposite side leg 34 of the hanging rail 22.
  • One 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 on. This width b3 corresponds approximately to the width b1 of the cylinder pit 2 minus twice the thickness d1 of the blanket 16.
  • the rectangular cross section the clamping bar 41 is from two to the side surfaces 4, 6 of the cylinder pit 2 parallel side surfaces 42, 43 and one each to the base area 7 the cylinder pit 2 parallel upper and lower Base 44, 46 formed.
  • In this tension bar 41 are corresponding to the threaded holes 14 of the Base 7 of the cylinder pit 2 through holes 47 provided. With the threaded holes 14 of Base 7 of the cylinder pit 2 act through the Through holes 47 of the clamping bar 41 protruding Tensioning screws 48 together.
  • 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 bar 41 is inserted into the cylinder pit 2 with the associated clamping screws 48.
  • 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)

Claims (7)

  1. Procédé pour la fixation et la tension d'un habillage (16) sur un cylindre (1) pourvu d'une dépression de cylindre en U (2), les deux extrémités (17 ; 18) de l'habillage (16) munies de rails d'accrochage (21 ; 22) étant insérées dans la dépression de cylindre (2), une réglette de serrage (41) étant ensuite introduite dans la dépression de cylindre (2) en poussant les rails d'accrochage (21 ; 22) des deux extrémités (17 ; 18), et la réglette de serrage (41) étant déplacée radialement vers l'intérieur en tendant les deux extrémités (17 ; 18), caractérisé en ce que la réglette de serrage (41) est déplacée vers l'intérieur jusqu'à ce que le rail d'accrochage (21) situé en début de plaque d'impression (8) glisse dans une rainure (9) ménagée dans la face latérale (6) de la dépression de cylindre (2), et en ce que la réglette de serrage (41) poursuit son déplacement en passant devant le rail d'accrochage (21) désormais immobilisé dans la rainure (9) et en mettant en tension l'extrémité (18) située en fin de plaque d'impression (19).
  2. Dispositif pour la fixation et la tension d'un habillage (16) d'une épaisseur (d1) sur un cylindre (1) d'une presse rotative, la surface périphérique (3) du cylindre (1) étant pourvue d'une dépression de cylindre en U (2) qui est délimitée par deux faces latérales (4 ; 6) et par une face de fond (7) et qui s'étend parallèlement à l'axe de rotation du cylindre (1), la largeur (b1) de la dépression de cylindre (2) étant légèrement supérieure, au moins dans sa partie supérieure, à la somme du double de l'épaisseur (d1) de l'habillage (16) et de la largeur (b3) d'une réglette de serrage (41), et des rails d'accrochage (21 ; 22) munis de branches latérales (31 ; 32 ; 33 ; 34) étant prévus à chacune des extrémités (17 ; 18) de l'habillage (16), une surface de pression (39) du rail d'accrochage (21) situé en fin de plaque d'impression (19) étant disposée, en position de tension, de manière à coopérer avec une face de fond de la réglette de serrage (41), caractérisé en ce que la face latérale (6) de la dépression de cylindre (2) située en début de plaque d'impression (8) comporte une rainure (9) comprenant deux faces latérales (11 ; 12) parallèles à la face de fond (7) de la dépression de cylindre (2) et une face de fond (7) parallèle aux faces latérales (4 ; 6) de la dépression de cylindre (2), en ce que les rails d'accrochage (21 ; 22) comportent chacun deux branches latérales (31 ; 32 ; 33 ; 34) situées respectivement sur les faces supérieure et inférieure (23 ; 24) du blanchet et pourvues chacune d'une surface de pression (36 ; 37 ; 38 ; 39), en ce que la surface de pression (37) du rail d'accrochage (21) situé en début de plaque d'impression (8) coopère, lorsque l'habillage (16) est en tension, avec la face latérale supérieure (12) de la rainure (9) de la face latérale (6) de la dépression de cylindre (2).
  3. Dispositif selon la revendication 2, caractérisé en ce que la branche latérale droite (31 ; 33) et la branche latérale gauche (32 ; 34) de chacune des barrettes d'accrochage (21 ; 22) présentent des longueurs différentes.
  4. Dispositif selon la revendication 3, caractérisé en ce que la branche latérale (32) qui appartient à la barrette d'accrochage (21) et qui est tournée vers la face latérale (6) de la dépression de cylindre (2) en début de plaque d'impression (8) est plus longue, d'au moins l'épaisseur (d1) de l'habillage (16), que la branche latérale opposée (31) de la barrette d'accrochage (21) en début de plaque d'impression.
  5. Dispositif selon la revendication 3, caractérisé en ce que la branche latérale (33) qui appartient à la barrette d'accrochage (22) et qui est tournée vers la face latérale (4) de la dépression de cylindre (2) en fin de plaque d'impression (19) est plus courte, d'au moins l'épaisseur (d1) de l'habillage (16), que la branche latérale opposée (34) de la barrette d'accrochage (22) en fin de plaque d'impression (19).
  6. Dispositif selon les revendications 1 et 2, caractérisé en ce que l'épaisseur (d2) des branches latérales (31 ; 32 ; 33 ; 34) est inférieure à l'épaisseur (d1) de l'habillage (16).
  7. Dispositif selon la revendication 2, caractérisé en ce que la réglette de serrage (41) est de forme parallélépipédique, dépourvue d'évidements, et de section rectangulaire, et en ce que sa largeur (b3) correspond sensiblement à la largeur (b1) de la dépression de cylindre (2) minorée du double de l'épaisseur (d1) de l'habillage (16).
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 EP0771270A1 (fr) 1997-05-07
EP0771270B1 true 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 (16)

* 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
JPH0413740A (ja) * 1990-05-08 1992-01-17 Asahi Fiber Glass Co Ltd 熱可塑性樹脂用混入材並びに樹脂成形体
DE4210778C2 (de) * 1992-04-01 1994-03-31 Roland Man Druckmasch Sicherungsvorrichtung für Spannschienen zum Spannen von Gummitüchern

Also Published As

Publication number Publication date
WO1996002391A1 (fr) 1996-02-01
EP0771270A1 (fr) 1997-05-07
JPH09507659A (ja) 1997-08-05
DE59501928D1 (de) 1998-05-20
JP2846123B2 (ja) 1999-01-13
DE4425189C1 (de) 1996-02-01
US5809889A (en) 1998-09-22

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