EP0741021A1 - Dispositif d'assemblage des dispositifs de serrage avec une traverse d'un cylindre de forme - Google Patents

Dispositif d'assemblage des dispositifs de serrage avec une traverse d'un cylindre de forme Download PDF

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Publication number
EP0741021A1
EP0741021A1 EP96104951A EP96104951A EP0741021A1 EP 0741021 A1 EP0741021 A1 EP 0741021A1 EP 96104951 A EP96104951 A EP 96104951A EP 96104951 A EP96104951 A EP 96104951A EP 0741021 A1 EP0741021 A1 EP 0741021A1
Authority
EP
European Patent Office
Prior art keywords
printing form
holding elements
form cylinder
crossmember
locking
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
EP96104951A
Other languages
German (de)
English (en)
Other versions
EP0741021B1 (fr
Inventor
François Récolet
Jacques Métrope
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.)
Heidelberger Druckmaschinen AG
Goss International Montataire SA
Original Assignee
Heidelberger Druckmaschinen AG
Heidelberg Harris SA
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 Heidelberger Druckmaschinen AG, Heidelberg Harris SA filed Critical Heidelberger Druckmaschinen AG
Publication of EP0741021A1 publication Critical patent/EP0741021A1/fr
Application granted granted Critical
Publication of EP0741021B1 publication Critical patent/EP0741021B1/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
    • 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
    • B41F27/1243—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 pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • the invention relates to a device for connecting holding elements to a crossbar of a printing form cylinder of a rotary printing press for fixing a flexible printing form on the circumference of the printing form cylinder, the front edge of the flexible printing form overlapping a front edge of a channel of the printing form cylinder and the rear card of the flexible printing form by at least one the traverse, which can be actuated and can be arranged, can be fixed, which has a hook-shaped projection on the end facing the peripheral surface of the printing form cylinder.
  • Document EP 0 639 454 A1 describes a device with a retractable hook for holding a printing plate on a support cylinder in a rotary printing press and a rotary printing press with such a device.
  • holding elements provided with a hook-shaped projection are inserted into a resilient system delimited by two guides and fixed by a first guide.
  • a projection is formed on the holding elements, which is pushed by the first guide onto the second guide in such a way that the projection of the holding element rests on an upper boundary of the second guide, and a projection formed on the first-mentioned guide resilient end permanently fixes the projection of the holding element over the boundary of the second guide.
  • the invention is based on the object, in a simpler manner than in the prior art, of enabling even tool-free assembly and disassembly of holding elements lying next to one another in the channel of a printing form cylinder.
  • the invention proposes a device for connecting holding elements to a crossbar of a printing form cylinder of a rotary printing press for fixing a flexible printing form on the circumference of the printing form cylinder, the front edge of the flexible printing form overlapping a front edge of a channel of the printing form cylinder and the rear edge of the flexible printing form can be fixed by at least one resilient holding element which can be actuated on the crossbar and which has a hook-shaped projection on the end facing the peripheral surface of the printing form cylinder, characterized in that a plurality of holding elements which can be arranged next to one another on the crossbar can be positively locked by means of locks.
  • the advantages associated with the solution according to the invention include, inter alia, that the holding elements can now be properly locked during assembly, which the operator also perceives and what despite the spatial Confinement in the channel can also be verified, since the individual holding elements are arranged next to one another in the channel and are flush with one another. Finally, the solution according to the invention also allows simplified control, since all holding elements assume a defined installation position.
  • the holding elements can be inserted vertically in guides on the crossmember.
  • the holding elements are further provided with recesses which can be locked on pins of a crossmember according to the bayonet principle.
  • the locking takes place by a lateral sliding movement, which represents a positive connection between the recess and the corresponding pin.
  • the locking can take place in a plane delimited by the two guides received on the crossmember.
  • a cross member 6, for example designed as a round bar can be seen, which is received in a tensioning channel 5 of the printing form cylinder 1.
  • a channel 2 opening into the peripheral surface of the printing form cylinder 1 is delimited on the one hand by a channel corner 4 and on the other hand by a channel flank 3.
  • a front edge 8 of a printing form 7 is fastened to the channel corner 4 and the rear edge 9 of the printing form 7 is fastened to a holding element 10 which bears against the rear flank 3 of the channel 2.
  • the printing form 7 is then stretched over the circumference of the printing form cylinder 1.
  • the holding element 10 shown here has a hook-shaped projection 11, with which the rear edge 9 of the printing form 7 is gripped and then tensioned.
  • the holding element 10 - shown here in the locked state - is received on the crossmember 6 in a front guide 12 and a rear guide 13. Both guides 12 and 13 delimit an insertion area 14.
  • the guides 12 and 13 are fixed to the cross member 6 by a screw 15 - a different type of fastening would of course also be possible.
  • individual detents - here designed as pins 18 - spaced apart from one another are provided next to one another (see also FIG. 2). The For reasons of clarity, pins are only indicated in FIG. 1 by a dash-dotted center line 21.
  • the resilient holding element 10 can be received in the guides 12 and 13 in such a way that it has a defined installation position.
  • Fig. 2 shows - simplified representation - the locking process of a holding element on a crossmember in the channel of a printing form cylinder.
  • position 10.1 the insertion position
  • the recess 16 provided with a rounding 23 engages over the screw 15 and the locking pin 18 arranged next to it.
  • the holding element 10 In the direction of the vertically downward-pointing arrow, the holding element 10 is moved into the position 10.2 inserted up to the lower limit.
  • the opening 17 of the recess 16 is opposite the pin 18.
  • the opening 17 engages around the pin 18 and assumes its locked position 10.3.
  • the locked Position 10.3 abuts the holding element 10 to be locked in each case on the side edge 19 of the holding element 10 lying next to it.
  • the lateral movement from the inserted position 10.2 to the locked position 10.3 establishes a positive connection between the detents such as the opening 17 and the pin 18, which guarantees a precise fit in view of the centrifugal forces occurring during the rotation of the printing form cylinder.
  • the longitudinal edge 20 of the respective holding element 10 does not abut the lower limit of the tensioning channel 2, but lies essentially between guides 12 and 13 (see also FIG. 1).
  • the center lines 21 and 22 of screw 15 and locking pin 18 lie slightly above one another, as has already been indicated in FIG. 1.
  • the printing form trailing edge can be gripped over its entire width and the printing form can be fixed in a defined position on the circumference of the printing form cylinder.
  • Means for limiting the deflection of the holding elements 10 parallel to the axis of the printing form cylinder 1 are also provided in order to prevent the locking of these holding elements 10 on the cross member 6.
  • these means for limiting the deflection have a flexible plate 30 or spring leaf, which is fixed on one of the side faces of the printing form cylinder 1 in alignment with the channel 2.
  • the printing form cylinder 1 has a recess 31 on the side of its side surface designated 32.
  • the flexible plate 30 is fixed in this recess by means of screws 33, 33 ', which cooperate with threaded holes arranged in the recess 31.
  • this flexible plate 30 is arranged on the printing form cylinder 1 in such a way that the deflection of the holding elements 10 parallel to the axis of the printing form cylinder 1 is limited in the locked position, which is shown in FIG. 3 by means of solid lines of the holding elements 10 the traverse 6 is schematized.
  • this flexible plate 30 can be curved in such a way that the vertical insertion and locking of the holding elements 10 on the crossmember 6 is thereby permitted, as shown by means of dashed lines in FIG. 3.
  • this flexible plate 30 By choosing a suitable length for this flexible plate 30, the latter can be bent by hand, ie without any tools. The entire assembly or disassembly of the holding elements 10 can consequently be carried out without any tools.
  • this flexible plate can be replaced by a rigid plate as a releasable stop, which can be fixed in a similar manner to the flexible plate 30 after the locking of the holding elements 10 on the cross member 6 on one of the side surfaces of the printing form cylinder 1.
  • the invention is not limited to the examples described and illustrated, which relates in particular to the shape of the means for limiting the deflection of the holding elements 10 parallel to the axis of the printing form cylinder 1 after the locking of these holding elements 10 on the cross member 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Paper (AREA)
EP96104951A 1995-05-04 1996-03-28 Dispositif d'assemblage des dispositifs de serrage avec une traverse d'un cylindre de forme Expired - Lifetime EP0741021B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9505352A FR2733718B1 (fr) 1995-05-04 1995-05-04 Dispositif de liaison entre des elements de retenue et une traverse d'un cylindre de forme d'impression
FR9505352 1995-05-04

Publications (2)

Publication Number Publication Date
EP0741021A1 true EP0741021A1 (fr) 1996-11-06
EP0741021B1 EP0741021B1 (fr) 2001-12-12

Family

ID=9478709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104951A Expired - Lifetime EP0741021B1 (fr) 1995-05-04 1996-03-28 Dispositif d'assemblage des dispositifs de serrage avec une traverse d'un cylindre de forme

Country Status (6)

Country Link
US (1) US5749297A (fr)
EP (1) EP0741021B1 (fr)
JP (1) JP3030577U (fr)
AT (1) ATE210554T1 (fr)
DE (1) DE59608406D1 (fr)
FR (1) FR2733718B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1038672A2 (fr) * 1999-03-26 2000-09-27 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de tension des plaques à imprimer dans des gorges de calage ayant une taille réduite
FR2791300A1 (fr) * 1999-03-26 2000-09-29 Heidelberger Druckmasch Ag Dispositif de fixation de plaques d'impression dans des canaux de fixation de grandeur reduite
EP3771563A1 (fr) 2019-08-02 2021-02-03 Koenig & Bauer AG Cylindre porte-forme d'impression et procédé d'ajustement d'une force de serrage dans un dispositif de maintien

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10060826A1 (de) * 2000-12-07 2002-06-13 Heidelberger Druckmasch Ag Federelement zur Fixierung von Druckformen an Druckformzylindern
DE10342740A1 (de) 2003-09-16 2005-04-21 Goss Int Montataire Sa Verfahren zum Ändern des Befestigungszustands einer Druckform auf einem Druckformzylinder

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB911855A (en) * 1960-03-07 1962-11-28 Miehle Goss Dexter Inc Tension lock-up for thin printing plates
CH448134A (de) * 1966-10-21 1967-12-15 Miehle Goss Dexter Inc Plattenzylinder für Druckerpressen mit einem Plattenbefestigungs-Mechanismus
US3757691A (en) * 1972-06-12 1973-09-11 North American Rockwell Printing cylinder
GB2092069A (en) * 1981-02-02 1982-08-11 Rockwell International Corp Web lithographic press row identifier
US4347788A (en) * 1980-05-01 1982-09-07 Harris Corporation Plate lockup mechanism
EP0639454A1 (fr) * 1993-08-20 1995-02-22 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif à crochet escamotable pour maintenir une plaque d'impression sur un cylindre porte-plaque dans une imprimante rotative et imprimante rotative comportant un tel dispositif

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1662284A (en) * 1927-03-17 1928-03-13 Frank B Shea Blanket holder for printing cylinders
US1739585A (en) * 1927-05-18 1929-12-17 Niagara Fold Inc Planographic press
US1788662A (en) * 1928-12-20 1931-01-13 Gestetner Ltd Duplicating with the aid of stencils
US2071824A (en) * 1933-10-13 1937-02-23 Poster Products Inc Stencil printing machine
US3237558A (en) * 1962-06-04 1966-03-01 Fas Clip Corp Printing blanket and fastener means therefor
DK103726C (da) * 1963-06-04 1966-02-14 Zeuthen & Aagaard As Anordning ved duplikatorer til opretning af en stencil.
FR2709091B1 (fr) * 1993-08-20 1995-11-10 Heidelberg Harris Sa Dispositif à lame interchangeable pour maintenir une plaque d'impression sur un cylindre porte-plaque dans une imprimante rotative, et outil de démontage de la lame.
DE4415683C2 (de) * 1994-05-04 1998-04-09 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE19509563C2 (de) * 1995-03-16 1997-01-23 Koenig & Bauer Albert Ag Zylinder mit einer Vorrichtung zum Spannen von Platten

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB911855A (en) * 1960-03-07 1962-11-28 Miehle Goss Dexter Inc Tension lock-up for thin printing plates
CH448134A (de) * 1966-10-21 1967-12-15 Miehle Goss Dexter Inc Plattenzylinder für Druckerpressen mit einem Plattenbefestigungs-Mechanismus
US3757691A (en) * 1972-06-12 1973-09-11 North American Rockwell Printing cylinder
US4347788A (en) * 1980-05-01 1982-09-07 Harris Corporation Plate lockup mechanism
GB2092069A (en) * 1981-02-02 1982-08-11 Rockwell International Corp Web lithographic press row identifier
EP0639454A1 (fr) * 1993-08-20 1995-02-22 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif à crochet escamotable pour maintenir une plaque d'impression sur un cylindre porte-plaque dans une imprimante rotative et imprimante rotative comportant un tel dispositif

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1038672A2 (fr) * 1999-03-26 2000-09-27 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de tension des plaques à imprimer dans des gorges de calage ayant une taille réduite
FR2791300A1 (fr) * 1999-03-26 2000-09-29 Heidelberger Druckmasch Ag Dispositif de fixation de plaques d'impression dans des canaux de fixation de grandeur reduite
EP1038672A3 (fr) * 1999-03-26 2001-04-11 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de tension des plaques à imprimer dans des gorges de calage ayant une taille réduite
US6601508B1 (en) 1999-03-26 2003-08-05 Heidelberger Druckmaschinen Ag Device for clamping printing forms in clamping channels of reduced size
EP3771563A1 (fr) 2019-08-02 2021-02-03 Koenig & Bauer AG Cylindre porte-forme d'impression et procédé d'ajustement d'une force de serrage dans un dispositif de maintien
DE102019120961A1 (de) * 2019-08-02 2021-02-04 Koenig & Bauer Ag Formzylinder, Flexo-Auftragwerk und Verfahren zur Anpassung einer Spannkraft in einer Haltevorrichtung

Also Published As

Publication number Publication date
FR2733718A1 (fr) 1996-11-08
US5749297A (en) 1998-05-12
JP3030577U (ja) 1996-11-01
EP0741021B1 (fr) 2001-12-12
DE59608406D1 (de) 2002-01-24
ATE210554T1 (de) 2001-12-15
FR2733718B1 (fr) 1997-08-01

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