EP0403434B1 - Procédé de préparation ainsi que de fixation et installation de fixation de plaques d'impression sur un cylindre d'une machine d'impression taille-douce - Google Patents

Procédé de préparation ainsi que de fixation et installation de fixation de plaques d'impression sur un cylindre d'une machine d'impression taille-douce Download PDF

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Publication number
EP0403434B1
EP0403434B1 EP90810418A EP90810418A EP0403434B1 EP 0403434 B1 EP0403434 B1 EP 0403434B1 EP 90810418 A EP90810418 A EP 90810418A EP 90810418 A EP90810418 A EP 90810418A EP 0403434 B1 EP0403434 B1 EP 0403434B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
strips
plates
plate
groove
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
EP90810418A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0403434A1 (fr
Inventor
Raffaele Fina
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.)
KBA Notasys SA
Original Assignee
De la Rue Giori 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 De la Rue Giori SA filed Critical De la Rue Giori SA
Publication of EP0403434A1 publication Critical patent/EP0403434A1/fr
Application granted granted Critical
Publication of EP0403434B1 publication Critical patent/EP0403434B1/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
    • 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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means
    • 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

Definitions

  • the present invention relates to a method and an installation for fixing printing plates on a cylinder formed by a ferrule or a plate cylinder of an intaglio printing machine, according to the preamble of claim 1, respectively claim 6.
  • plate cylinder In the printing field, the term “plate cylinder” is generally understood to mean the assembly composed of the body of the cylinder which carries printing plates and of the shaft on which this body of the cylinder is integral, and under the term “ferrule” only the cylindrical tube or mantle without a shaft. Plate cylinders are generally used in sheet printing machines and must be installed as an assembly in the machine bearings, respectively completely disassembled from the machine by removing the bearing shaft, while the ferrules , generally used in coil printing machines, can be simply mounted on the shaft, respectively removed from their shaft, the printing plates being mounted on the ferrule before it is mounted on the shaft.
  • a method as described in the preamble of claim 1 and an installation as described in the preamble of claim 5 are known from US Patent 1,461,068 (Fig. 10) for effecting, during the fixing of the plate, a tightening of that -this in the peripheral direction.
  • metal rods should be welded to the lower surface of the plate such that each edge of the plate and the outer lateral face of the corresponding rod is in the same plane. This condition is necessary in order to be able to bring the edges of the plate, respectively of the plates as well as of said lateral faces of the rods, until they lie flat.
  • the object of the present invention is to propose a process for preparing and fixing intaglio printing plates on a plate cylinder or on a ferrule in an easier manner while ensuring a perfectly continuous surface of the plate, respectively printing plates stretched on the cylinder in two directions, namely peripheral and radial.
  • the method according to the invention is characterized by the characteristic clause of claim 1.
  • This process has the advantage that the bending of the plates facilitates their mounting and that, thanks to the rods, a perfect bond is ensured flat-joint of the adjacent edges of the stretched plates and therefore a continuous printing surface, without any separation, this which avoids any subsequent rectification.
  • the method according to the invention can be used both for fixing intaglio plates to a ferrule for printing on the spool and to a plate cylinder for printing to the sheet.
  • this way of fixing the plates makes it possible to avoid the empty zones between two consecutive plates.
  • the invention also relates to an installation for carrying out the process, installation which is defined by claim 5.
  • Preferred alternative embodiments of the installation are defined by claims 6 to 9.
  • FIGS. 1 to 3 as many axial grooves 2 (FIG. 2) are formed on the peripheral surface of a ferrule 1 as the number of printing plates intaglio that must be attached to it.
  • two printing plates 3 and 4 have been chosen which must be fixed to the shell 1.
  • the groove 2 (fig. 2) made by milling and precise machining is formed so as to present an absolutely flat bottom 2.1 and two lateral faces 2.2 and 2.3 which are perpendicular to the bottom 2.1 and inclined relative to the axis of the ferrule forming thus a wedge-shaped groove.
  • Metal rods 5 and 6 are prepared which will be fixed to the ends, parallel to the axis of the ferrule, of two plates 3 and 4, as well as similar rods for the other ends of two plates 3 and 4.
  • Each of the rods 5, 6, the height of which is less than the depth of the groove 2 has a trapezoidal shape having lateral faces 5.1 and 5.2, respectively 6.1 and 6.2, the face 5.1, respectively 6.1 being inclined, a lower face 5.3, respectively 6.3 , as well as an upper face 5.4, respectively 6.4, which is curved and adapted to the curvature of the peripheral surface of the shell 1.
  • the faces 5.2, respectively 6.2 of the two rods 5, 6 are intended, in the assembled state of the plates, and after machining, as described later, to be brought one against the other in close contact.
  • the printing plates 3 and 4 after having been prepared by known means and each having a length slightly greater than the half-periphery of the ferrule 1 are bent with a radius of curvature less than that of the radius of the ferrule. Then, the rods 5, 6, as well as the corresponding rods at the opposite ends, are fixed exactly on the ends of the two plates 3, 4, such that the length of the assembly of the plates, taken between said faces 5.2 and 6.2, is equal to the circumference of the ferrule.
  • the strips are fixed preferably by laser welding, which prevents any deformation of the printing plates. After carrying out this fixing, the end of each of the plates is machined so as to form a continuous surface between the face 5.2 of the strip 5 and the end of the plate 3, as well as between the face 6.2 of the strip 6 and the end of the plate 4.
  • FIGS. 3 and 4 is shown the installation for fixing printing plates 3, 4 provided with rods 5, 6 according to FIG. 1, on a ferrule 1 provided with a groove 2 according to FIG. 2.
  • each groove There is inside each groove a T-shaped section 30 fixed by screws 31 introduced by radial housings inside the ferrule 1, the seal being ensured by O-ring seals 32, the face lower 30.1 of the profile 30 is inclined relative to the plane of the bottom of the groove 2.1.
  • each groove there is available for each groove a pair of removable rods 33a, 33b and two pairs of wedge bars 34a, 34b and 35a, 35b.
  • the rods 33a and 33b have, on the one hand, a notch of shape conjugated to that of the rods 5 and 6 and on their lower part a housing making it possible to partially surround the profile 30 leaving a free space between the inclined face 30.1 of the profile and the lower part of each of the rods 33a, 33b.
  • the positioning is done as follows: the rods 33a and 33b are introduced into each groove 2, then the rods 5, 6 fixed to the ends of the plates 3, 4 are placed there, the first pair of wedge bars 34a is introduced , 34b to ensure the positioning in the peripheral direction of the rods and therefore of the printing plates.
  • the second pair of wedge bars 35a and 35b are introduced into said free space between the inclined face 30.1 of the profile 30 and the lower part of each of the rods 33a, 33b. thus ensuring the holding of the assembly in the radial direction.
  • the establishment and the thrust force on the wedge bars can be carried out by any device, but in order not to exceed a force which could cause deformation or destruction of both the shell and the plate located at- above the bars, the introduction and especially the tightening is carried out by an adequate device such as a micrometric screw or a system using a jack whose force is controlled.
  • the same method is used, providing as many grooves as there are plates.
  • the ferrule 1 is provided on either side with two annular sectors 15a, 15b, having the same diameter as it and lying in the extension of its lateral faces, one sector for each lateral edge of each plate 3, 4.
  • Each sector 15a, 15b is mounted axially to the ferrule by regularly distributed screws 16 which are screwed into axial recesses 17 blind and tapped from the end of the ferrule 1, while they freely cross sectors 15a, 15b of so that each sector 15a, 15b is axially movable relative to the shell 1.
  • guides 18 regularly distributed. They are formed by pins driven axially in axial blind passages 18a of the lateral face of the ferrule, their dimension allowing them to slide in holes provided in each sector 15a, 15b.
  • screws 25 for positioning and lateral tension of the plates, these screws 25 being screwed only on the sectors 15a, 15b in threaded passages 27 thereof and penetrate into housings blind and opposite 20 and 21 extending axially, on the one hand, in the shell and on the other hand, in the sectors 15a, 15b facing the shell 1.
  • the screws 25 abut against the bottom of the housings 20 and allow the axial positioning of the printing plates and the adjustment of the axial tension applied to them via said annular sectors.
  • 21 are housed coil springs 19 surrounding the screws 25 and pressing against the bottom of the housings 20 and 21.
  • Tapped holes 22 are drilled radially on the peripheral periphery of each sector into which screws 23 with countersunk heads can be screwed.
  • the screws 16 are tightened to compress the springs 19.
  • the lateral ends of these plates lying at the level of the sectors 15a, 15b have recesses 24 into which are screwed the screws 23 on the corresponding sectors.
  • recess is meant a shape pressed into the plate serving as a housing for the head of the screws which thus do not protrude from the plate (see FIG. 3).
  • the sectors 15a, 15b have notches corresponding to the bars to allow the establishment or removal thereof without having to remove the sectors.
  • Figures 5 and 6 show a similar arrangement for fixing the printing plates 3, 4 on a plate cylinder 1a, therefore intended for a sheet printing machine.
  • the fixing screws 36 which each fix a T-shaped section 30, and with the same configuration as that described in relation to Figure 4, can not be screwed from the inside of the cylinder but from the outside.
  • the rods 5, 6, 33a, 33b and the wedge bars 34a, 34b, 35a, 35b being the same.
  • the device for fixing the plates in the axial direction shown in FIGS. 5 and 6 is formed in the same way as that of FIGS. 3 and 4 with two annular sectors 15 a and 15 b on each side, and the same means are represented by the same references.
  • the printing plates have undergone, because of the deformations mentioned, an enlargement such as under the force of the coil springs exerting a permanent tension on the plates the screws 25 no longer abut at the bottom of the housings 20, after stopping the machine, all the screws 25 are tightened to make up for the play.
  • a cylinder is provided with a single plate, under these conditions a closed annular sector is used, therefore a ring, for each lateral edge of the plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)
  • Printing Methods (AREA)
EP90810418A 1989-06-14 1990-06-08 Procédé de préparation ainsi que de fixation et installation de fixation de plaques d'impression sur un cylindre d'une machine d'impression taille-douce Expired - Lifetime EP0403434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2232/89 1989-06-14
CH223289 1989-06-14

Publications (2)

Publication Number Publication Date
EP0403434A1 EP0403434A1 (fr) 1990-12-19
EP0403434B1 true EP0403434B1 (fr) 1994-09-21

Family

ID=4228955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810418A Expired - Lifetime EP0403434B1 (fr) 1989-06-14 1990-06-08 Procédé de préparation ainsi que de fixation et installation de fixation de plaques d'impression sur un cylindre d'une machine d'impression taille-douce

Country Status (12)

Country Link
US (1) US5117755A (zh)
EP (1) EP0403434B1 (zh)
JP (1) JP2806600B2 (zh)
KR (1) KR0169482B1 (zh)
CN (1) CN1021312C (zh)
AT (1) ATE111812T1 (zh)
AU (1) AU631884B2 (zh)
CA (1) CA2018571A1 (zh)
DD (1) DD295123A5 (zh)
DE (1) DE69012666T2 (zh)
RU (1) RU1830005C (zh)
UA (1) UA19314A (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5188031A (en) * 1991-06-27 1993-02-23 Rockwell International Corporation Printing press blanket cylinder assembly, subassemblies and method of using same
EP0857267B1 (de) * 1995-10-26 2000-04-05 Getrag Innovations GMBH Kraftfahrzeuggetriebe mit stufenlos veränderbarem übersetzungsverhältnis
CN100400285C (zh) * 2006-08-02 2008-07-09 广西真龙彩印包装有限公司 一种单张纸凹版印刷机
DE102008001715B4 (de) * 2008-05-13 2011-07-14 KOENIG & BAUER Aktiengesellschaft, 97080 Zylinder einer Rotationsdruckmaschine
JP5609091B2 (ja) * 2009-12-09 2014-10-22 東レ株式会社 印刷版の製造方法および印刷版
JP5722586B2 (ja) * 2010-10-06 2015-05-20 昭和アルミニウム缶株式会社 版装着装置および印刷用版着脱方法
DE102013218657A1 (de) * 2013-09-18 2015-03-19 Koenig & Bauer Aktiengesellschaft Verfahren zum Recken eines auf einen Zylinder einer Rotationsdruckmaschine aufgespannten Zylinderaufzuges
CN108705862B (zh) * 2018-07-31 2023-12-19 贵州贤俊龙彩印有限公司 一种新型印版滚筒
CN109611448B (zh) * 2018-12-21 2023-11-14 成都利君实业股份有限公司 一种可调心滑动轴承

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289633C (zh) *
US1461068A (en) * 1922-07-29 1923-07-10 Regensteiner Theodore Printing roller
GB368609A (en) * 1930-08-16 1932-03-10 Johannisberg Gmbh Maschf An improved device for stretching printing plates on the printing cylinders of intaglio printing machines
US2619904A (en) * 1946-05-20 1952-12-02 Hoe & Co R Plate straining mechanism for use in printing machines
GB981968A (en) * 1962-08-08 1965-02-03 Thomas De La Rue Engineering L Improvements relating to the mounting of printing plates
FR1389192A (fr) * 1964-03-13 1965-02-12 Stork & Co Nv Pochoir cylindrique pour machine à imprimer des films ou analogues
FR1495556A (fr) * 1966-08-08 1967-09-22 Clivia Procédé de fabrication de cliché d'impression et cliché obtenu par ce procédé

Also Published As

Publication number Publication date
JP2806600B2 (ja) 1998-09-30
JPH0324959A (ja) 1991-02-01
CN1021312C (zh) 1993-06-23
DE69012666D1 (de) 1994-10-27
RU1830005C (ru) 1993-07-23
EP0403434A1 (fr) 1990-12-19
UA19314A (uk) 1997-12-25
DD295123A5 (de) 1991-10-24
AU631884B2 (en) 1992-12-10
ATE111812T1 (de) 1994-10-15
CA2018571A1 (en) 1990-12-14
KR910000360A (ko) 1991-01-29
KR0169482B1 (ko) 1999-05-01
US5117755A (en) 1992-06-02
DE69012666T2 (de) 1995-04-06
CN1049126A (zh) 1991-02-13
AU5709590A (en) 1990-12-20

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