EP0393336A1 - Machine d'impression flexographique - Google Patents

Machine d'impression flexographique Download PDF

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Publication number
EP0393336A1
EP0393336A1 EP90104000A EP90104000A EP0393336A1 EP 0393336 A1 EP0393336 A1 EP 0393336A1 EP 90104000 A EP90104000 A EP 90104000A EP 90104000 A EP90104000 A EP 90104000A EP 0393336 A1 EP0393336 A1 EP 0393336A1
Authority
EP
European Patent Office
Prior art keywords
roll
screened
printing
shoe
printing roll
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
EP90104000A
Other languages
German (de)
English (en)
Other versions
EP0393336B1 (fr
Inventor
Giovanni Gessaghi
Luigi Sergio Carraro
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.)
GRAPHIC MACHINE SERVICE Srl
Original Assignee
GRAPHIC MACHINE SERVICE Srl
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11165120&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0393336(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by GRAPHIC MACHINE SERVICE Srl filed Critical GRAPHIC MACHINE SERVICE Srl
Priority to AT90104000T priority Critical patent/ATE94469T1/de
Publication of EP0393336A1 publication Critical patent/EP0393336A1/fr
Application granted granted Critical
Publication of EP0393336B1 publication Critical patent/EP0393336B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/40—Cylinder lifting or adjusting devices fluid-pressure operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/32—Lifting or adjusting devices
    • B41F31/36—Lifting or adjusting devices fluid-pressure operated

Definitions

  • This invention relates to a flexographic machine of a type which comprises, on a frame structure, an impression roll, a printing roll supported at its ends by a pair of slides fitting slidably on the frame structure to bring the printing roll in contact with the impression roll, a screened roll supported at its ends by a shoe pair wherein each shoe is mounted slidably on a respective one of said slide pair to bring the screened roll in contact with the printing roll, and locking means for securing the slides and shoes to said frame structure.
  • a machine as indicated being characterized in that the screened roll and the printing roll are movable sequentially by respective elevator means between a reference operative position and an inoperative position respectively away from the printing roll and the impression roll.
  • a flexographic machine which comprises, on a frame structure 2, an impression roll 3 and a plurality of printing stations, all indicated at 4.
  • Each printing station 4 includes a printing roll 5 which is supported, at its opposed ends 6, on a pair of slides 7.
  • the slides 7 are mounted slidably on the frame structure 2 to bring the printing roll 5 to contact the impression roll 3 along a substantially radial direction thereto.
  • Each printing station 4 further includes a screened roll 8 which is supported, at its opposed ends 9, on a pair of shoes 10.
  • Each shoe 10 is mounted slidably on a respective one of the slides 7 to bring the screened roll 8 to contact the printing roll, substantially along the above-noted radial direction.
  • a conventional drive 11 includes a pair of drive screws 12 and 13 led to a common drive motor 14 for driving the slides and shoes in a simultaneous and synchronized manner.
  • Locking cylinders 15 and 16 are arranged to respectively secure the slides 7 and shoes 10 to the frame structure 2 according to necessity.
  • shoes 10 also mount, in a removable manner, a rubber-lined ink applicator roll 17 which contacts the screened roll 8 at a point designated P for its inking.
  • an ink applicator blade 18 may be mounted on the shoes 10 as shown in phantom lines on the drawings.
  • the screened roll 8 is shiftable, along a substantially perpendicular direction to said radial direction and with the intermediary of an elevator means 19, between an operative reference position where it is in working contact with the printing roll 5, and an inoperative position where it is held away therefrom by a distance indicated at a in the drawing view.
  • the printing roll 5 is also shiftable, along a substantially perpendicular direction to said radial direction and through an elevator means 20, between a position where it is in working contact with the impression roll 3 and an inoperative position where it is held away therefrom by a distance indicated at b in the drawing view.
  • the elevator means 19 for the screened roll 8 have at each end 9 of the latter a body 21, which bears said end 9 rotatably therein and is shiftanble angularly about a pivot pin 22 carried on the shoe 10 at a spacing from the axis of the screened roll 8, it being preferably located at the point P.
  • Detent means and backing means 23 and 24 are formed on the body 21 and the shoe 10, respectively, which will precision engage with each other, with the screened roll 8 at its reference position.
  • a pad 27 is advantageously provided on the body 21 for attaching the doctoring blade 18 to the body 21, thereby the contact between the screened roll 8 and the blade 18 can be maintained even while the elevator means 19 is brought into operation.
  • the elevator means 19 is completed by an oil-operated cylinder 28 arranged to act on the body 21 to drive it angularly about the pivot pin 22.
  • the elevator means 20 includes, for each end 6 of the printing roll 5, a body 29 wherein said end 6 is born rotatably and which is shiftable linearly along a track 30 formed on the slide 7.
  • Detent means and backing means, 31 and 32, are respectively formed on the body 29 and the slide 7 which precision engage each other with the printing roll 5 at its reference position.
  • said detent means and backing means, 31 and 32 respectively comprise a V-shaped projection 33 formed on the body 29, and a V-shaped recess 34 formed in the slide 7.
  • the elevator means 20 is completed by an oil-operated cylinder 35 arranged to act on the body 29 to drive it linearly.
  • the elevator means 19 for the screened roll 8 is activated.
  • the latter roll will be caused to move from its operative position to its position away from the printing roll 5, at a distance a therefrom (see Figure 3).
  • the flexographic machine can begin to print.
  • a major advantage of the flexographic machine according to the invention is that it makes for unusually rapid setting operations and operations to remedy any operational problems, while the setting accuracy is retained because of the slides and shoes being held securely in their locked positions.
  • a further advantage of the flexographic machine of this invention is that its construction has been kept simple, thereby it is to be expected that long-term reliable operation can be afforded.
  • the inventive flexographic machine has proved capable of faultless printing on substrate materials exhibiting local uneveness, such as across short sections of double thickness due to two edges from different materials overlapping and being stuck to each other. In fact, it would then be sufficient to activate the elevator means for just the time required to let the uneven section to move on without problems.
  • the machine of this invention has proved capable of ensuring smooth inking of the screened roll with either the rubber-lined ink applicator roll or the ink applicator blade.
  • the rubber-lined ink applicator roll or ink applicator blade will remain in contact with the screened roll as required, since the screened roll would be moved angularly about the point of contact with the rubber-lined roll, whilst the blade would follow the screened roll in said angular movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Printing Methods (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP90104000A 1989-04-21 1990-03-01 Machine d'impression flexographique Revoked EP0393336B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90104000T ATE94469T1 (de) 1989-04-21 1990-03-01 Flexodruckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8920247A IT1229689B (it) 1989-04-21 1989-04-21 Macchina flessografica.
IT2024789 1989-04-21

Publications (2)

Publication Number Publication Date
EP0393336A1 true EP0393336A1 (fr) 1990-10-24
EP0393336B1 EP0393336B1 (fr) 1993-09-15

Family

ID=11165120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104000A Revoked EP0393336B1 (fr) 1989-04-21 1990-03-01 Machine d'impression flexographique

Country Status (5)

Country Link
EP (1) EP0393336B1 (fr)
AT (1) ATE94469T1 (fr)
DE (1) DE69003294T2 (fr)
ES (1) ES2046559T3 (fr)
IT (1) IT1229689B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9208023U1 (de) * 1992-06-15 1992-11-26 Windmöller & Hölscher, 4540 Lengerich Farbwerk mit einendig gelagerter Rasterwalze sowie mit einendig gelagerten Formatzylinder
US5385093A (en) * 1992-06-15 1995-01-31 Windmoeller & Hoelscher Inking unit having a cantilevered inking roller, as well as a cantilevered plate cylinder
WO2011154566A1 (fr) * 2010-06-01 2011-12-15 Comexi Group Industries, S.A.U. Machine à imprimer
CN112123935A (zh) * 2020-09-23 2020-12-25 席志竹 一种具有柔版印刷头的印刷机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216514A1 (de) * 1972-04-06 1973-10-11 Wilhelm Wehmeier Gmbh Rotationsdruckmaschine
FR2485990A1 (fr) * 1980-07-03 1982-01-08 Holweg Const Mec Dispositif pour le changement automatique de cylindres d'une imprimeuse flexographique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216514A1 (de) * 1972-04-06 1973-10-11 Wilhelm Wehmeier Gmbh Rotationsdruckmaschine
FR2485990A1 (fr) * 1980-07-03 1982-01-08 Holweg Const Mec Dispositif pour le changement automatique de cylindres d'une imprimeuse flexographique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9208023U1 (de) * 1992-06-15 1992-11-26 Windmöller & Hölscher, 4540 Lengerich Farbwerk mit einendig gelagerter Rasterwalze sowie mit einendig gelagerten Formatzylinder
US5385093A (en) * 1992-06-15 1995-01-31 Windmoeller & Hoelscher Inking unit having a cantilevered inking roller, as well as a cantilevered plate cylinder
WO2011154566A1 (fr) * 2010-06-01 2011-12-15 Comexi Group Industries, S.A.U. Machine à imprimer
ES2374784A1 (es) * 2010-06-01 2012-02-22 Comexi Group Industries, Sau Máquina impresora.
CN112123935A (zh) * 2020-09-23 2020-12-25 席志竹 一种具有柔版印刷头的印刷机

Also Published As

Publication number Publication date
IT8920247A0 (it) 1989-04-21
ATE94469T1 (de) 1993-10-15
DE69003294D1 (de) 1993-10-21
DE69003294T2 (de) 1994-03-03
EP0393336B1 (fr) 1993-09-15
ES2046559T3 (es) 1994-02-01
IT1229689B (it) 1991-09-06

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