EP0329228B1 - Appareil de repérage pour plaques d'impression flexibles - Google Patents

Appareil de repérage pour plaques d'impression flexibles Download PDF

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Publication number
EP0329228B1
EP0329228B1 EP19890200301 EP89200301A EP0329228B1 EP 0329228 B1 EP0329228 B1 EP 0329228B1 EP 19890200301 EP19890200301 EP 19890200301 EP 89200301 A EP89200301 A EP 89200301A EP 0329228 B1 EP0329228 B1 EP 0329228B1
Authority
EP
European Patent Office
Prior art keywords
printing cylinder
printing
cylinder
movable
marks
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
EP19890200301
Other languages
German (de)
English (en)
Other versions
EP0329228A1 (fr
Inventor
Hans Van Der Horst
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.)
Anderson & Vreeland Bv
Original Assignee
Anderson & Vreeland Bv
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
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Application filed by Anderson & Vreeland Bv filed Critical Anderson & Vreeland Bv
Publication of EP0329228A1 publication Critical patent/EP0329228A1/fr
Application granted granted Critical
Publication of EP0329228B1 publication Critical patent/EP0329228B1/fr
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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
    • B41F27/005—Attaching and registering printing formes to supports

Definitions

  • the present invention relates to the field of flexible printing plates and in particular to the fixing of such printing plates on printing cylinders.
  • the flexible printing plates often used in modern printing techniques have to be fixed to a printing cylinder to be used in the printing process.
  • the location thereof has to take place very accurate as the picture to be produced by the printing plate has to be provided exactly on the right location on the material to be printed.
  • the requirements for accuracy become even greater, when the material to be printed has to be printed subsequently with different colours.
  • US-A-3616055 shows an apparatus for positioning a flexible printing plate, comprising at least two position marks on a printing cylinder, the apparatus comprising means for rotatably supporting the printing cylinder and at least two light sources movable in a direction parallel to the axis of the printing cylinder for projecting at least two light markings onto said printing cylinder.
  • a square pattern is projected onto the plate which pattern can be relocated such, that one line thereof co-incides with a line provided onto the printing cylinder.
  • the square pattern is referred to the line on the printing cylinder and the printing plate can be referred to the square patters, so that it can be positioned such, that the depictions to be printed are correctly positioned relative to the square pattern.
  • the plate onto which the printing plate is present is moved in a forward direction and subsequently the printing plate is applied onto the printing cylinder.
  • US-A-3186060 describes an apparatus for providing curved rigid printing plate onto printing cylinders. These plates are put into register by entering the position of the first printing plates by positioning two lamps, so that the markings protected by said lamps co-incide with two marks provided on the printing plates. Subsequently, the printing plates for the other colours are positioned such that the marks present thereon co-incide with the markings projected by the lamps. It should be noted, however, that there is question of semi-cylindrical rigid printing plates, so that the positioning thereof only has to be made in two dimensions. In the radial direction the position of the printing plate is determined by the diameter of the cylinder.
  • EP-A-0089015 describes a method for attaching flexible printing plates on a printing cylinder in which two television cameras have been provided, each recording the image of a printing plate to be positioned on the printing cylinder, and this plate is via a monitor.
  • the words of position of the printing plates can be recorded and they can be corrected such, that relevant images are in register after which the printing plates are fixed onto the printing cylinders.
  • the images of more than two video cameras are combined.
  • the present invention provides an apparatus according to which the printing plates can be applied very accurately on the printing cylinder.
  • an apparatus of the kind, referred to above, comprising: means for rotatably supporting the printing cylinder; at least two light sources movable in a direction parallel to the axis of the printing cylinder for projecting at least two light markings onto said printing cylinder.
  • this apparatus can also be used for printing plates already existing. Thus it becomes possible to fix printing plates on the printing cylinder with a substantial amount of accuracy.
  • the apparatus depicted in fig. 1 comprises a frame 1 with two guiding shafts 2 onto which two movable supports 3 have been provided.
  • Each of the supports 3 comprises two suspension wheels 4 onto which a printing cylinder 5 can be located.
  • the printing cylinder 5 can be fixed onto the suspension wheels 4 by means of fixation wheels 6 which have been provided through a bracket 7, a rack 8 and a guiding element 9.
  • the printing cylinder 5, located on the supporting wheels 4, can rotate freely.
  • Each of the motors 15 is connected with a control unit 17, which can dictate the position of both laser light sources 13 by means of the motors 15 and the spindle shafts 14.
  • a pressing roller 18 has been provided to the frame such by means of two yokes 19, that this pressing roller 18 can be located adjacent with the printing cylinder 5 in which account is taken of printing cylinders with different diameters by the movability of the pressing roller 18.
  • the position of the pressing roller 18 is adjustable by means of two spindle shafts 20 which are actuable simultaneously. Both spindle shafts 20 are driven by means of a hand wheel, a driving shaft 22 and several conical gear transmissions 23.
  • a coupling apparatus 24 At the outer side of one of the yokes 19 a coupling apparatus 24 has been provided with which, when the pressing roller 18 is adjacent to the printing cylinder 5, both rollers are connected for rotation.
  • the pressing roller 18 comprises a driving motor 25 which drives the pressing roller 18 through a worm-wheel transmission 26.
  • the position of the marks 28 located on the printing plate 27 are fed in the control unit 17. It is, of course, also possible that only the number of the printing plate 27 has to be entered and that the control unit 17 comprises a memory in which, except for the number of the relevant printing plates, also the co-ordinates of the marks belonging thereto have been stored. Subsequently, the control unit 17 will make the motors 15 drive the laser light sources such, that the laser light sources 13 both take such a position, that the required positioning markings 16 are projected on the printing cylinder 5 on the required position.
  • the printing plate 27 can be positioned such on the printing cylinder 5, that the markings projected co-incide with the marks 28.
  • the pressing roller 18 is driven by means of the motor 25 through which the coupling apparatus 24, the printing cylinder 5 is driven and the printing plate 27 is provided in the right position on the printing cylinder 5.
  • the back layer of the printing plate 27 or the circumference of the printing cylinder 5 has been provided with suitable means of fixation.
  • a printing cylinder 5 has been provided of which the diameter is considerably larger than that of the printing cylinder 5, depicted in fig. 1. Further, it is shown that the pressing roller 18 is moved until it is adjacent the printing cylinder 5.
  • this embodiment comprises a shaft, extending parallel to the axis of the printing cylinder 5 onto which a coil 31 of couble-sided-adhesive foil has been provided. At the upper side this foil comprises a layer of protective paper. On a shaft 32, also being provided parallel to the axis of the printing cylinder 5, a cutting organ 33 has been provided which is movable along this shaft and which can cut the piece34 of double-sided-adhesive foil leading from the coil 31 towards the printing cylinder 5.
  • an angle rotation sensor 35 has been provided, which is connected with the signal generator 36.
  • the angle rotation sensor 35 serves to divide the circumfrence of the printing cylinder 5, which is of importance to determine the initial position of the printing plate departing from an initial or zero-position of the printing cylinder 5. Further, this is necessary, when the printing plate 27 does not extend over the whole circumference and when several printing plates 27 have to be provided on the circumference.
  • the piece 34 of foil is cut through by means of the cutting organ 33, after which the pressing process is continued by means of the motor 25, until the piece 34 cut off is completely located on the printing cylinder.
  • the dimensioning of the cutting organ 33 and of the required angle of rotation of the printing cylinder 5 and thus of the pressing roller 18 which are sensed by the angle rotation sensor 35 is such, that the pieceof the piece 34 of foil cut off suits exactly the circumference of the printing cylinder 5. This avoids that a part of the printing cylinder is covered with a double layer of foil, or that a slit developes in the layer of foil. Subsequently, the layer of covering paper can be removed from the foil, and the printing plate can be fixed by means of the method described with the help of fig. 1.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (6)

  1. Appareil pour positionner une plaque d'impression flexible (27) comprenant au moins deux marques de positionnement (28) sur un cylindre d'impression (5), l'appareil comportant :
    - des moyens (3, 4) pour supporter le cylindre d'impression (5) en rotation ;
    - au moins deux sources lumineuses (13) pouvant être déplacées dans une direction parallèle à l'axe du cylindre d'impression (5) pour projeter au moins deux marquages lumineux (16) sur ledit cylindre d'impression,
    caractérisé en ce qu'il comporte :
    - une mémoire (36) pour stocker les coordonnées des marques (28) des plaques d'impression (27) ; et
    - une unité de contrôle (14, 15, 16) pour commander le mouvement des sources lumineuses (13) en fonction des coordonnées des marques (28) d'une plaque d'impression présente dans la mémoire (36).
  2. Appareil selon la revendication 1, caractérisé en ce qu'il comporte un capteur de rotation (35) pour fournir au générateur de signaux (36) un signal indiquant la position de rotation du cylindre d'impression (5).
  3. Appareil selon la revendication 1 ou 2, caractérisé en ce qu'il comporte une unité d'entraînement (18, 25, 26) pour entraîner en rotation le cylindre d'impression (5) jusqu'à des positions telles que calculées par l'unité de contrôle (36) en fonction du nombre de plaques d'impression (27) devant être montées sur le cylindre d'impression (5), de la dimension de ces plaques d'impression (27) et des positions des marques (28) sur les plaques d'impression (27) à monter.
  4. Appareil selon l'une des revendications précédentes, caractérisé en ce qu'il présente au moins une caméra dirigée vers chacun des marquages de positionnement (16) et au moins un moniteur représentant l'image de la caméra.
  5. Appareil selon l'une des revendications précédentes, caractérisé en ce qu'il comporte deux supports mobiles (3, 4) pour le cylindre d'impression (5), lesquels supports mobiles (3, 4) peuvent être déplacés parallèles à l'axe du cylindre d'impression (5), et un cylindre compresseur (18), lequel cylindre compresseur (18) peut être déplacé jusqu'à être adjacent au cylindre d'impression (5), et en ce qu'il comporte une unité d'entraînement (24, 25, 26, 29) pour le cylindre d'impression (5) et le cylindre compresseur (18), afin d'entraîner ces deux éléments simultanément.
  6. Appareil selon l'une des revendications précédentes, caractérisé en ce qu'il comporte une tige (30) disposée parallèle à l'axe du cylindre d'impression (5) pour stocker un rouleau de réserve (31) du film adhésif double face, un élément de découpe (33) pouvant être déplacé parallèle à la tige (30) et disposé à une certaine distance de celle-ci, un capteur de rotation (35) pour mesurer l'angle de rotation du cylindre d'impression (5) et un générateur de signaux (36) pour générer un signal, lorsque le capteur de rotation (35) a enregistré une rotation prédéterminée, le tout fonctionnant de telle sorte que la pièce de film (34) coupée par l'élément de découpe (33) est égale à la circonférence du cylindre d'impression concerné (5).
EP19890200301 1988-02-18 1989-02-08 Appareil de repérage pour plaques d'impression flexibles Expired - Lifetime EP0329228B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8800416 1988-02-18
NL8800416A NL8800416A (nl) 1988-02-18 1988-02-18 Positioneerinrichting voor flexibele drukplaten.

Publications (2)

Publication Number Publication Date
EP0329228A1 EP0329228A1 (fr) 1989-08-23
EP0329228B1 true EP0329228B1 (fr) 1993-01-13

Family

ID=19851813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890200301 Expired - Lifetime EP0329228B1 (fr) 1988-02-18 1989-02-08 Appareil de repérage pour plaques d'impression flexibles

Country Status (4)

Country Link
EP (1) EP0329228B1 (fr)
DE (1) DE68904320T2 (fr)
ES (1) ES2037386T3 (fr)
NL (1) NL8800416A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6117615A (en) * 1999-07-28 2000-09-12 E. I. Du Pont De Nemours And Company Method for mounting multiple printing elements onto a cylindrical element
DE102006060464C5 (de) * 2006-12-19 2013-12-24 Bobst Bielefeld Gmbh Verfahren zum Einstellen einer Walze in einer Rotationsdruckmaschine
EP1916102B2 (fr) † 2006-10-23 2014-06-25 Bobst Bielefeld GmbH Procédé pour ajuster un cylindre dans une machine à imprimer

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912428U1 (de) * 1989-10-19 1991-02-21 Roosen, Reiner, 6450 Hanau Vorrichtung zum Positionieren einer Druckplatte auf einem Druckzylinder
DE4024061C2 (de) * 1990-07-28 1994-02-10 Krause Biagosch Gmbh Verfahren und Vorrichtung zur Produktivitätssteigerung von Rotationsdruckmaschinen
NL9300357A (nl) * 1993-02-25 1994-09-16 Anderson & Vreeland Bv Werkwijze en inrichting voor het bereiden van op een cilindrische drager aangebrachte flexodrukplaten.
NL9400397A (nl) 1994-03-14 1995-10-02 Anderson & Vreeland Bv Inrichting voor het maken van proefdrukken.
NL1023431C2 (nl) 2003-05-14 2004-11-16 Av Flexologic Bv Van een register voorziene positioneerinrichting voor flexibele drukplaten.
ATE540816T1 (de) 2004-05-04 2012-01-15 Sys Tec S R L Verfahren und maschine zum ausrichten von flexodruckplatten auf druckzylindern
ITBO20040749A1 (it) 2004-12-02 2005-03-02 Bieffebi Spa Macchina per il montaggio a registro di cliche' flessografici con sistema informatico virtuale
EP2026132B1 (fr) 2007-08-16 2013-03-13 E. I. Du Pont de Nemours and Company Procédé pour la fabrication d'un élément photosensible de forme cylindrique pour une utilisation en tant que forme d'impression
EP2154572B1 (fr) 2008-08-15 2017-05-03 E. I. du Pont de Nemours and Company Procédé pour la fabrication d'un élément photosensible de forme cylindrique pour une utilisation en tant que forme d'impression
NL2006897C2 (nl) 2011-06-06 2012-12-10 Av Flexologic Bv Werkwijze en inrichting voor het in zijn registerpositie plaatsen van een drukplaat.
NL2006931C2 (nl) * 2011-06-14 2012-12-17 Av Flexologic Bv Inrichting en werkwijze voor het aanbrengen van dubbelzijdig klevende folie op een cilindrische houder voor een flexibele drukplaat.
DE102015203326B4 (de) * 2015-02-25 2019-02-21 Koenig & Bauer Ag Vorrichtung zum Auflegen mindestens eines Metalldrucktuches auf einen zwischen zwei sich gegenüber stehenden Gestellwänden angeordneten Zylinder
CN114701257A (zh) * 2022-04-17 2022-07-05 广东潮华龙印刷有限公司 一种印刷设备模具切换装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186060A (en) * 1962-05-07 1965-06-01 Hans H Riddervold Preregistering of curved stereotype printing plates
US3616055A (en) * 1969-05-16 1971-10-26 David H Mages Optical plate mounter
DE3136703C1 (de) * 1981-09-16 1982-11-04 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Einrichtungen an Druckmaschinen mit Registerverstelleinrichtungen
DE3209484A1 (de) * 1982-03-16 1983-09-29 Windmöller & Hölscher, 4540 Lengerich Verfahren zum lagerichtigen befestigen der klischees auf den formzylindern von flexodruckmaschinen fuer den mehrfarbendruck

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6117615A (en) * 1999-07-28 2000-09-12 E. I. Du Pont De Nemours And Company Method for mounting multiple printing elements onto a cylindrical element
EP1916102B2 (fr) † 2006-10-23 2014-06-25 Bobst Bielefeld GmbH Procédé pour ajuster un cylindre dans une machine à imprimer
DE102006060464C5 (de) * 2006-12-19 2013-12-24 Bobst Bielefeld Gmbh Verfahren zum Einstellen einer Walze in einer Rotationsdruckmaschine

Also Published As

Publication number Publication date
EP0329228A1 (fr) 1989-08-23
ES2037386T3 (es) 1993-06-16
NL8800416A (nl) 1989-09-18
DE68904320T2 (de) 1993-05-06
DE68904320D1 (de) 1993-02-25

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