EP0741010A2 - Dispositif de support pour cylindres porte-plaques en particulier pour des machines d'impression flexographiques - Google Patents

Dispositif de support pour cylindres porte-plaques en particulier pour des machines d'impression flexographiques Download PDF

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Publication number
EP0741010A2
EP0741010A2 EP96106432A EP96106432A EP0741010A2 EP 0741010 A2 EP0741010 A2 EP 0741010A2 EP 96106432 A EP96106432 A EP 96106432A EP 96106432 A EP96106432 A EP 96106432A EP 0741010 A2 EP0741010 A2 EP 0741010A2
Authority
EP
European Patent Office
Prior art keywords
axis
support assembly
printing plate
seat
assembly according
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.)
Withdrawn
Application number
EP96106432A
Other languages
German (de)
English (en)
Other versions
EP0741010A3 (fr
Inventor
Sergio Donghi
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.)
Rotomec SpA
Original Assignee
Maf SpA
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 Maf SpA filed Critical Maf SpA
Publication of EP0741010A2 publication Critical patent/EP0741010A2/fr
Publication of EP0741010A3 publication Critical patent/EP0741010A3/fr
Withdrawn legal-status Critical Current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
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing

Definitions

  • the present invention relates to a support assembly for printing plate-holder cylinders, particularly in flexographic printing machines.
  • the end of the cylinder is then again supported by means of the piston, so as to reposition it with respect to the seat, which is again moved axially so as to again couple to the end.
  • a principal aim of the invention is to solve the above-mentioned problems by providing a support assembly for printing plate-holder cylinders particularly for flexographic printing machines, which allows to replace on board the machine, at the same time eliminating all the difficulties in coupling between the seat and the end of the cylinder.
  • a particular object of the invention is to provide a support assembly in which uncoupling between the end of the cylinder and the seat does not produce dangerous sliding and slipping movements between the seat and the end of the cylinder and furthermore allows to significantly reduce intervention times.
  • Another object of the present invention is to provide a support assembly for printing plate-holder cylinders particularly in flexographic printing machines which, by virtue of its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use.
  • Another object of the present invention is to provide a support assembly for printing plate-holder cylinders that can be easily obtained starting from commonly commercially available elements and materials and is furthermore competitive from a merely economical point of view.
  • a support assembly for printing plate-holder cylinders particularly in flexographic printing machines, which comprises a first and a second shoulders that form seats for rotatably supporting the ends of a printing plate-holder cylinder, characterized in that at least one of said seats is formed by an upper bracket connected to a lower bracket, said upper bracket being overturnable about a first axis that is substantially parallel to the axis of said seat and said lower bracket being arranged at the end of an arm that can be turned over about a second axis that is substantially perpendicular to said first axis.
  • the support assembly for printing plate-holder cylinders particularly in flexographic printing machines, comprises a first shoulder 1 and a second shoulder 2 that are spaced from one another and support the ends of a printing plate-holder cylinder, generally designated by the reference numeral 3.
  • first shoulder 1 forms an openable seat 4 and the second shoulder 2 forms a fixed seat 5 in which the axial ends of the printing plate-holder cylinder 3 rotatably engage.
  • first seat 4 is formed by an upper bracket 10 that can be turned over about a first axis 11 which is substantially parallel to the axis of the seat and is parallel to the axis of the printing plate-holder cylinder in the assembled condition.
  • the upper bracket 10 is pivoted, about the axis 11, to the end of an arm 12 which forms a lower bracket 13 coupleable to the bracket 10 to form the seat 4.
  • the arm 12 can be turned over about a second axis 20 that is substantially perpendicular to the axis 11.
  • the arm 12 is turned over by means of a hydraulic rotating overturning actuator 21, which actuates a first driving gear 22 that meshes with a toothed sector 23 keyed on the shaft 20.
  • adjustable stroke limiters 30 and 31 are also provided which allow to adjust the exact stroke-limit position.
  • a rolling bearing 40 the axis whereof is perpendicular to the axis of the cylinder, said bearing facilitating relative sliding during overturning.
  • guiding rollers 35 are connected to the upper bracket 10 and keep the wing 41 associated with a gear 42, which transmits the rotary motion to the cylinder 3 and is extracted after turning the upper bracket over.
  • a supporting piston 50 that engages the axial end of the printing plate-holder cylinder 3 during the overturning of the arm 12, so as to allow optimum support while the printing plate-holder cylinder 3 is held in a cantilevered manner.
  • the upper bracket 10 is turned over, in practice opening the seat 4, and then, after extracting the driving gear 42, the arm 12 is turned over so that the printing plate-holder cylinder, supported in a cantilevered manner by the other seat 5 and by the supporting piston 50, allows to extract the printing plate and replace it.
  • the materials employed, as well as the contingent shapes and dimensions may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
EP96106432A 1995-05-02 1996-04-24 Dispositif de support pour cylindres porte-plaques en particulier pour des machines d'impression flexographiques Withdrawn EP0741010A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI950878 1995-05-02
ITMI950878A IT1274414B (it) 1995-05-02 1995-05-02 Gruppo di supporto per cilindri portacliche' particolarmente in macchine da stampa flessografiche

Publications (2)

Publication Number Publication Date
EP0741010A2 true EP0741010A2 (fr) 1996-11-06
EP0741010A3 EP0741010A3 (fr) 1997-05-21

Family

ID=11371507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106432A Withdrawn EP0741010A3 (fr) 1995-05-02 1996-04-24 Dispositif de support pour cylindres porte-plaques en particulier pour des machines d'impression flexographiques

Country Status (2)

Country Link
EP (1) EP0741010A3 (fr)
IT (1) IT1274414B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1092536A1 (fr) * 1999-10-11 2001-04-18 Gi Due S.r.l. Unité d'impression avec cylindre d'impression à enlevement et blocage simplifiés
CN106541701A (zh) * 2016-12-09 2017-03-29 浙江炜冈机械有限公司 印刷机的网纹辊传动机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE490994C (de) * 1927-08-11 1930-02-05 Johannisberg G M B H Maschf Zylinderlagerung, insbesondere Formzylinderlagerung an Rotationsdruckmaschinen
EP0184180A2 (fr) * 1984-12-04 1986-06-11 Windmöller & Hölscher Support pour cylindres de clichés dans une machine d'impression de péférence pour la flexographie avec des chemises de cylindre de cliché échangeables en forme de manchons
EP0492102A1 (fr) * 1990-12-22 1992-07-01 MAN Roland Druckmaschinen AG Palier pour cylindre de groupe d'impression
EP0549936B1 (fr) * 1985-12-11 1995-03-22 MAN Roland Druckmaschinen AG Cylindre de transfert avec manchon échangeable, supporté entre deux parois latérales d'un élément d'impression

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE490994C (de) * 1927-08-11 1930-02-05 Johannisberg G M B H Maschf Zylinderlagerung, insbesondere Formzylinderlagerung an Rotationsdruckmaschinen
EP0184180A2 (fr) * 1984-12-04 1986-06-11 Windmöller & Hölscher Support pour cylindres de clichés dans une machine d'impression de péférence pour la flexographie avec des chemises de cylindre de cliché échangeables en forme de manchons
EP0549936B1 (fr) * 1985-12-11 1995-03-22 MAN Roland Druckmaschinen AG Cylindre de transfert avec manchon échangeable, supporté entre deux parois latérales d'un élément d'impression
EP0492102A1 (fr) * 1990-12-22 1992-07-01 MAN Roland Druckmaschinen AG Palier pour cylindre de groupe d'impression

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1092536A1 (fr) * 1999-10-11 2001-04-18 Gi Due S.r.l. Unité d'impression avec cylindre d'impression à enlevement et blocage simplifiés
US6408756B1 (en) 1999-10-11 2002-06-25 Gi Due S.R.L. Printing unit with printing cylinder having simplified removal and locking
CN106541701A (zh) * 2016-12-09 2017-03-29 浙江炜冈机械有限公司 印刷机的网纹辊传动机构
CN106541701B (zh) * 2016-12-09 2018-10-16 浙江炜冈机械有限公司 印刷机的网纹辊传动机构

Also Published As

Publication number Publication date
ITMI950878A0 (it) 1995-05-02
IT1274414B (it) 1997-07-17
ITMI950878A1 (it) 1996-11-02
EP0741010A3 (fr) 1997-05-21

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