EP0222033A1 - Procédé et dispositif pour fixer un cliché flexographique - Google Patents

Procédé et dispositif pour fixer un cliché flexographique Download PDF

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Publication number
EP0222033A1
EP0222033A1 EP85114320A EP85114320A EP0222033A1 EP 0222033 A1 EP0222033 A1 EP 0222033A1 EP 85114320 A EP85114320 A EP 85114320A EP 85114320 A EP85114320 A EP 85114320A EP 0222033 A1 EP0222033 A1 EP 0222033A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
plate
register
flexographic
registration
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Withdrawn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
EP85114320A
Other languages
German (de)
English (en)
Inventor
Billy Collins
James Frederick Collins
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.)
Individual
Original Assignee
Individual
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
Priority to US06/654,085 priority Critical patent/US4589338A/en
Application filed by Individual filed Critical Individual
Priority to EP85114320A priority patent/EP0222033A1/fr
Publication of EP0222033A1 publication Critical patent/EP0222033A1/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Withdrawn legal-status Critical Current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
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/005—Attaching and registering printing formes to supports
    • 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

Definitions

  • the present invention relates to an apparatus and method for applying flexographic printing plates to the plate cylinders of printing machines.
  • flexographic plate be accurately positioned on each plate cylinder in order that images printed in different colours by different cylinders are in registration.
  • Canadian Patent 975,217 issued to Chromax Limited on September 30, 1975 shows a machine for such a purpose in which a flexographic printing place is first positioned on a slide. The slide is then moved relatively to a printing cylinder and pressure sensitive adhesive on the reverse side of the flexographic plate causes it to stick to the wrap around the cylinder in registration.
  • the present invention provides an improved, compact and simple apparatus which first positions the flexographic printing plate on a register cylinder by means of register pins and then transfers the plate to a plate cylinder.
  • the plate is retained on the plate cylinder surface magnetically or by an adhesive substance.
  • the invention relates to apparatus for mounting a flexographic plate in registration on a plate cylinder, the flexographic plate being provided with registration holes at one end thereof.
  • the apparatus comprises: a register cylinder capable of controlled rotation and provided with a row of apertures to receive retractible registration pins at selected locations, means supporting a flexographic plate with the one end supported by the register cylinder and the registration holes engaged by registration pins, means for first rotating the register cylinder a precise amount whereby the flexographic plate is positioned for transfer to a plate cylinder, a movable plate cylinder support for receiving a plate cylinder at a predetermined rotational position, whereby the plate cylinder may abut the flexographic plate and register cylinder after the register cylinder has performed its first rotation, and means for further rotating the register cylinder when abutting the plate cylinder whereby the flexographic plate is transferred to the plate cylinder in registration.
  • the invention in its method aspect relates to a method for mounting a flexographic plate in registration on a plate cylinder by use of a register cylinder capable of controlled rotation and provided with a row of apertures to receive retractible registration pins at selected locations.
  • the method comprises the steps of: positioning the flexographic plate with holes at one end engaging the pins in the register cylinder, rotating the register cylinder a precise amount, positioning the plate cylinder at a predetermined rotational position abutting the flexographic plate and register cylinder, retracting the registration pins and rotating both the register cylinder and plate cylinder whereby the flexographic plate transfers to the plate cylinder in registration.
  • Figures 1 and 2 show two views of the plate mounting apparatus of the present invention.
  • An underlying support or base member 10 has bearing journals 13 supporting stub support shafts 12 of a register cylinder 11.
  • Index plate 22 is used for locking the register cylinder in positions spaced exactly 180° apart, as will be more fully described below.
  • Hand wheel 23 is used by an operator to rotate the register cylinder during use and cam control knob 24 adjusts the position of an internal cam 25.
  • Cam 25 cooperates with a series of holes 26 which are adapted to receive register pins 27.
  • Bearing journals 14 are provided adjacent to the register cylinder to receive a plate cylinder 16 from a conventional printing machine.
  • Cylinder 16 has stub support shafts 15 and is adjusted to fit axially by knob 31 of an adjustment mechanism 30.
  • the print cylinder is provided with a helical drive gear 32, at the end opposite from adjusting mechanism 30, and this is used to lock the cylinder against rotation as described more fully below.
  • the plate cylinder bearing journals 14 are movable on guide members 17 so that the plate cylinder can be moved towards and away from register cylinder 11 under control of the operator by using handle 21 controlling threaded rod 20.
  • Adjustable supports to receive a removable plate cylinder are shown, for example, in U.S. Patent No. 3,347,161, issued October 17, 1967, to Lenk and in U.S. Patent No. 3,390,633, issued July 2, 1968, to Broughton.
  • Figure 3 shows the mechanism employed to lock the plate cylinder and register cylinder against rotation at selected times during operation of the apparatus.
  • a movable locating pin 34 engages with a tooth of helical gear 32.
  • the position of pin 34 is controlled by a screw thread driven by knob 35 and may be locked in position by a further knob 36.
  • index plate 22 is provided with opposed locking recesses 37 and 38 spaced exactly by 180° which cooperate with a locating pin 40 carried by a slidable plate 41.
  • Plate 41 is spring biased so as to be urged into engagement with the index plate. It can be pulled downwardly by a tongue portion 42 extending at right angles to the plane of Figure 3.
  • Plate 41 can be held in the retracted position by a spacer block 43 which may be pivoted to occupy the space above tongue 42 by means of a handle 44.
  • a positioning tray 45 extends downwardly towards the upper part of register cylinder 11.
  • An adjustably mounted, channelled guide member 46 is carried by base 10. The function of the guide member is to maintain tension in the flexographic plate and guide it as the register cylinder rotates.
  • the spacing between the register cylinder 11 and the exit portion of guide member 32 can be varied to accommodate flexographic plates of varying thickness by a screw adjusting mechanism controlled by knob 47.
  • a flexographic plate 33 is positioned face downwardly on the positioning tray 45 and register holes at one end of the flexographic plate are engaged by pins 27 placed in appropriate holes 26 in register cylinder 11.
  • the apparatus is then in the position shown in Figure 4.
  • the register cylinder is then rotated through 180° to the position shown in Figure 5 where the flexographic plate is supported by register pins 27 and by the guide member 46.
  • the plate cylinder 16 is then adjusted by means of handle 21 to abut the flexographic plate 33 and the register cylinder 11 as shown in Figure 6.
  • An adhesive surface 48 provided on plate cylinder 16 engages the rear surface of flexographic plate 33 and under the pressure of the plate cylinder, register pins 27 retract into holes 26 in register cylinder 11.
  • Plate cylinder 16 is then unlocked for rotation and register cylinder 11 is further rotated leading to the situation shown in Figure 7 in which flexographic plate 33 has adhered to plate cylinder 16 in registration whereupon plate cylinder 16 may be removed and utilized in printing apparatus. Register cylinder 11 may then be returned to its original position ready to receive the next flexographic plate.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP85114320A 1984-02-17 1985-11-11 Procédé et dispositif pour fixer un cliché flexographique Withdrawn EP0222033A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US06/654,085 US4589338A (en) 1984-02-17 1984-09-25 Flexographic plate mounting apparatus and method
EP85114320A EP0222033A1 (fr) 1985-11-11 1985-11-11 Procédé et dispositif pour fixer un cliché flexographique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85114320A EP0222033A1 (fr) 1985-11-11 1985-11-11 Procédé et dispositif pour fixer un cliché flexographique

Publications (1)

Publication Number Publication Date
EP0222033A1 true EP0222033A1 (fr) 1987-05-20

Family

ID=8193877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114320A Withdrawn EP0222033A1 (fr) 1984-02-17 1985-11-11 Procédé et dispositif pour fixer un cliché flexographique

Country Status (1)

Country Link
EP (1) EP0222033A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286020A2 (fr) * 1987-04-09 1988-10-12 BASF Aktiengesellschaft Méthode pour relier les bords façonnés de formes flexographiques photopolymérisées
EP0386316A1 (fr) * 1989-03-07 1990-09-12 Landis & Gyr Business Support AG Procédé pour l'obtention d'une matrice sous forme de manchon et dispositif pour la réalisation du procédé
WO2006042637A2 (fr) * 2004-10-20 2006-04-27 Windmöller & Hölscher Kg Cylindre pour plaque d'impression
US9056450B2 (en) 2013-03-04 2015-06-16 Uni-Pixel Displays, Inc. Method of mounting a flexographic printing plate with structured patterned backing tape
WO2017032966A1 (fr) * 2015-08-25 2017-03-02 Jm Heaford Limited Appareil et procédé pour monter une plaque flexible

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655639C (de) * 1935-04-03 1938-01-20 Georg Boettinger Verfahren zum Aufkleben von Gummiklischees auf die Formwalzen fuer Anilindruckmaschinen
GB775399A (en) * 1955-05-03 1957-05-22 Bobst Fils Sa J A method of and apparatus for mounting a stereo plate on a cylindrical body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655639C (de) * 1935-04-03 1938-01-20 Georg Boettinger Verfahren zum Aufkleben von Gummiklischees auf die Formwalzen fuer Anilindruckmaschinen
GB775399A (en) * 1955-05-03 1957-05-22 Bobst Fils Sa J A method of and apparatus for mounting a stereo plate on a cylindrical body

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286020A2 (fr) * 1987-04-09 1988-10-12 BASF Aktiengesellschaft Méthode pour relier les bords façonnés de formes flexographiques photopolymérisées
EP0286020A3 (en) * 1987-04-09 1989-04-26 Basf Aktiengesellschaft Method of joining the cut-up edges of photopolymerised flexographic formes
EP0386316A1 (fr) * 1989-03-07 1990-09-12 Landis & Gyr Business Support AG Procédé pour l'obtention d'une matrice sous forme de manchon et dispositif pour la réalisation du procédé
WO2006042637A2 (fr) * 2004-10-20 2006-04-27 Windmöller & Hölscher Kg Cylindre pour plaque d'impression
WO2006042637A3 (fr) * 2004-10-20 2006-11-23 Windmoeller & Hoelscher Cylindre pour plaque d'impression
US8800445B2 (en) 2004-10-20 2014-08-12 Windmoeller & Hoelscher Kg Printing plate cylinder registration
US9056450B2 (en) 2013-03-04 2015-06-16 Uni-Pixel Displays, Inc. Method of mounting a flexographic printing plate with structured patterned backing tape
WO2017032966A1 (fr) * 2015-08-25 2017-03-02 Jm Heaford Limited Appareil et procédé pour monter une plaque flexible
US11446920B2 (en) 2015-08-25 2022-09-20 Jm Heaford Limited Apparatus and method for mounting a flexible plate

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