EP2657026A1 - Verfahren zur Lagerung von Druckplatten, die nacheinander einem Plattenträgerzylinder einer Rundlaufpresse entnommen werden, und Lagervorrichtung - Google Patents

Verfahren zur Lagerung von Druckplatten, die nacheinander einem Plattenträgerzylinder einer Rundlaufpresse entnommen werden, und Lagervorrichtung Download PDF

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Publication number
EP2657026A1
EP2657026A1 EP13165789.2A EP13165789A EP2657026A1 EP 2657026 A1 EP2657026 A1 EP 2657026A1 EP 13165789 A EP13165789 A EP 13165789A EP 2657026 A1 EP2657026 A1 EP 2657026A1
Authority
EP
European Patent Office
Prior art keywords
plate
printing plate
fold
storage medium
printing
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Withdrawn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
EP13165789.2A
Other languages
English (en)
French (fr)
Inventor
Jean-Luc Bailly
Didier Yves Guy Havard
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.)
Goss International LLC
Original Assignee
Goss International LLC
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 Goss International LLC filed Critical Goss International LLC
Publication of EP2657026A1 publication Critical patent/EP2657026A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • 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
    • B41F27/1212—Devices for attaching printing elements or formes to supports for attaching flexible printing formes using pneumatic force
    • 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
    • B41F27/1231—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 by translatory motion substantially tangential to support surface
    • 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
    • B41F27/1281—Devices for attaching printing elements or formes to supports for attaching flexible printing formes details of the printing plate ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/50—Devices for storing printing plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/60—Devices for transferring printing plates
    • B41P2227/63—Devices for removing printing plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4213—Forming a pile of a limited number of articles, e.g. buffering, forming bundles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/111—Bottom
    • B65H2405/1111—Bottom with several surface portions forming an angle relatively to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/34—Suction grippers
    • B65H2406/342—Suction grippers being reciprocated in a rectilinear path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1928—Printing plate

Definitions

  • the present invention relates to a method of storing printing plates removed successively from a plate cylinder of a rotary press.
  • An offset rotary press comprises at least one printing unit comprising a plate cylinder, on which are mounted printing plates carrying the patterns to be printed, and a blanket cylinder carrying a blanket, the blanket cylinder being pressurized against the plate cylinder and against a continuous web to be printed, to transfer ink onto plates on the web and thus to print the patterns on the web.
  • the used plates of the plate cylinder are removed and new plates are mounted on the plate cylinder.
  • EP 1 608 512 A1 discloses a plate changing system for automatically mounting and dismounting plates on a plate cylinder of a rotary press.
  • This plate changing system comprises a device for storing the plates successively dismounted from the plate cylinder, in which a next plate, dismounted after a previously removed plate, is stored under the previous plate. During disassembly, the previous plate is raised and the next plate is slid under the previous plate.
  • the stack of disassembled and stacked plates on each other has a relatively large height. This limits the number of plates that can be received in the storage device and requires intervention by an operator during production to remove the battery from the storage device. An increase in the height of the storage device increases its bulk.
  • One of the aims of the invention is to propose a method for storing plates removed successively from a plate cylinder of a rotary press, allowing storage of a large number of plates in a small space.
  • the invention proposes a method of storing at least two printing plates removed successively from the same plate cylinder of a rotary press, each printing plate having a central region bearing patterns to print and an opposite front edge and a rear edge, the front edge being provided with a front fold for fixing the printing plate on the plate cylinder, in which the printing plates are stacked on each other. others by fitting their folds before each other.
  • the invention also relates to a device for storing at least two printing plates removed successively from the same plate cylinder of a rotary press, each printing plate having a central region carrying patterns to be printed and a front edge and an opposite rear edge, the leading edge comprising a front fold for hooking onto the plate cylinder, the storage device comprising a storage medium adapted to receive the successively withdrawn printed plates stacked on each other; other, the storage device comprising a displacement system adapted to move a next printing plate during disassembly by sliding it backwards on a previous printing plate disassembled beforehand, to fit the fold before the the next printing plate on the fold of the previous printing plate.
  • the invention also relates to a rotary press comprising a storage device as defined above.
  • the printing plate 2 illustrated on the Figure 1 is designed to be wound on a plate cylinder of a rotary offset printing press.
  • Plate 2 has a rectangular outline.
  • the plate 2 comprises a central region 4 on an upper face 5 a pattern to print.
  • the printing plate 2 comprises an opposite front edge 6 and a rear edge 8, surrounding the central region 4.
  • the front edge 6 is folded so as to form a front fold 10.
  • the rear edge is folded so as to form a fold back 12.
  • front and back refer to the position of the plate 2 mounted on the plate cylinder and to the direction of rotation of the plate cylinder during a print job.
  • the plate 2 extends longitudinally forwards between its rear edge 8 and its front edge 6.
  • the plate 2 has a length L taken between its rear edge 8 and its front edge 6.
  • the central region 4 is flexible to allow the plate 2 to be wound on the circumference of a plate cylinder of a rotary press.
  • the front fold 10 and the back fold 12 are each permanently deformed so that the front fold 10 and the back fold 12 are geometrically stable so as to allow the hooking of the plate on a plate cylinder.
  • the front fold 10 comprises a free branch 14 folded.
  • the free branch 14 makes an acute angle ⁇ with the central region 4 of the plate 2.
  • the angle ⁇ is for example between 30 ° and 90 °.
  • the front fold 10 comprises for example a single fold.
  • the rear fold 12 comprises two folds.
  • the plate 2 is designed to be wound on the circumference of a plate cylinder 16 of a rotary press 17. Each plate 2 is wound on the plate cylinder 16 extending longitudinally along the circumference of the cylinder door -plate 16.
  • Each plate 2 mounted on the plate cylinder 16 is fixed by hooking its front fold 10 and its rear fold 12 in a fastening groove 18 formed in the outer surface 19 of the plate cylinder 16.
  • Each fixing groove 18 is provided for attaching a front fold 10 of a plate 2 to an edge of the fastening groove 18, and is provided with a locking device 20 housed in the fastening groove 18 for retain a rear fold 12 of the same plate 2 or another plate 2 received in the fixing groove 18.
  • Each locking device 20 is selectively locked to retain the rear fold 12 received in the groove 24 or unlocked to release the fold back 12.
  • the plate cylinder 16 is configured to carry one or more plates one behind the other on its circumference.
  • the plate cylinder 16 has a fixing groove 18 and the plate 2 is fixed to the plate cylinder with its front fold 10 and its rear fold 12 fixed. in the fixing groove 18.
  • the plate cylinder 16 is designed to receive several plates per revolution, the plate cylinder 16 has a plurality of fastening grooves 18, each plate 2 being mounted between two fastening grooves 18 and having its front fold 10 fixed in a groove. 18 and its rear fold 12 fixed in the other fixing groove 18.
  • the plate cylinder 16 When performing a printing job, the plate cylinder 16, carrying at least one plate 2 around its circumference, is rotated in the direction of production illustrated by the arrow P on the Figure 2 .
  • At least one used plate 2 is removed from the plate cylinder 16 and then replaced by a new plate 2 mounted on the plate cylinder 16.
  • the rotary press 17 comprises a storage device 22 associated with the plate cylinder 16 for the automatic unloading of the plates 2 carried by the plate cylinder 16 and their storage.
  • the storage device 22 comprises a storage medium 24 for storing a plurality of plates 2 stacked one on the other.
  • the storage medium 24 is arranged close to the plate cylinder 16 to be able to receive a plate 2 during disassembly still partially mounted on the plate cylinder 16.
  • the storage medium 24 extends substantially in a horizontal plane having an inclination limited with respect to the horizontal, preferably less than +/- 20 °.
  • the storage medium 24 has an inlet 28 for the insertion of the printing plates 2 into the storage medium 24.
  • the inlet 28 is oriented towards the plate cylinder 16 so as to receive a plate 2 during the disassembly and still partially mounted on the plate cylinder 16.
  • the inlet 28 is located above a tangential plane T horizontal tangent to the plate cylinder 16 and passing above it.
  • the storage medium 24 has a bottom 30 opposite the inlet 28.
  • the storage device 22 comprises a guide ramp 32 for guiding the rear edge 8 of a printing plate 2 being dismounted to the inlet 28 of the storage medium 24.
  • the ramp 32 extends between the inlet 28 and the circumference of the plate cylinder 16.
  • the ramp 32 has a lower end 34 adjacent the periphery of the plate cylinder 16 and an upper end 36 adjacent to the inlet 28 of the storage medium 24.
  • the ramp 32 pupil between its lower end 34 and its upper end 36.
  • the ramp 32 is movable between an active position in which its lower end 34 is adjacent to the circumference of the plate cylinder 16, and an inactive position (not shown), in which its lower end 34 is spaced from the door cylinder. 16 while running a print job.
  • the storage device 22 comprises a displacement system 38 for moving a plate 2 from the inlet 28 to the bottom 30 of the storage medium 24.
  • the displacement system 38 comprises at least one gripping member for gripping a plate 2 and at least one displacement actuator for moving the or each gripping member.
  • a gripping member is a suction cup 40 adapted to be applied to a plate 2 to grip it by creating a vacuum between the suction cup and the plate 2.
  • a displacement actuator is a telescopic arm 42.
  • An extension or a retraction of the telescopic arm 42 makes it possible to move the suction cup 40, and a plate 2 gripped by it, with respect to the storage support 24.
  • an extension of the telescopic arm 42 makes it possible to move a plate 2 from the inlet 28 towards the bottom 30 of the storage medium 24 and a retraction of the telescopic arm 42 brings back the suction cup 40 towards the inlet 28 of the storage medium 24.
  • the displacement system 38 is movable between a raised position (in dotted line on the Figure 2 ) in which it is spaced apart from the storage medium 24, and a lowered position, in which the gripping member is adapted to grip a plate 2 inserted at least partially in the storage medium 24.
  • the displacement system 38 pivots around the a pivot axis AA between the lowered position and the raised position.
  • the storage device 22 makes it possible to store two plates 2 discharged successively from the plate cylinder 16 by stacking them one on the other in the storage medium 24, by fitting their folds before one into the other, so that the front fold 10 of a plate 2 stacked on another plate 2 is nested on the front fold 10 of the other plate 2.
  • FIGS 2 and 3 illustrate a first plate already removed from the plate cylinder 16 and stored in the storage medium 24, and disassembly steps of a second plate and its stack on the first plate in the storage medium 24. Thereafter, the first plate is named “previous plate” and the second plate is named “next plate”.
  • the plate cylinder 16 is oriented around its axis so that the fixing groove 18 retaining the rear fold 12 of the next plate 2 is substantially opposite the storage device 24.
  • locking device 20 of the fixing groove 18 retaining the rear fold 12 of the next plate 2 is unlocked so as to release the rear fold 12. Due to the inherent elasticity of the next plate 2, the rear fold 12 is raised. If necessary, a device extraction is provided to act positively on the rear fold 12 to make it out of the fixing groove 18.
  • the plate cylinder 16 is rotated in the rear direction R, in the direction opposite to the direction of rotation P of the plate cylinder during the production of a print job. Due to the rotation of the plate cylinder 16, the rear fold 12 moves towards the inlet 28 of the storage medium 24 being guided by the guide ramp 32. It will be noted that the displacement system 38 is in the raised position (in dotted lines on the Figure 2 ) so as not to interfere with the insertion of the plate 2 into the inlet 28 of the storage medium 24.
  • the rear fold 12 of the next plate 2 passes above the front fold of the previously removed plate 2.
  • the storage device 22 comprises a recess 44 at the entrance 28 of the storage medium 24, in which the front fold 10 of the previous plate 2 stored in the storage medium 24 is received, which makes it possible to ensure that the fold 12 back of the next plate actually goes over.
  • the storage medium 24 here comprises an end 46 adjacent the inlet 28 inclining downwards towards the inlet 28 to form a recess with the upper end 36 of the ramp 32.
  • the moving system 38 is moved to the lowered position and the suction cup 40 is controlled to grip a rear portion of the next plate 2 as shown in FIG. Figure 2 .
  • the telescopic arm 42 is controlled to move the sucker 40 and the next plate 2 to the bottom 30 of the storage medium 24 as illustrated by the arrow F, until the complete insertion of the next plate 2 into the support of 24.
  • the plate cylinder 16 continues to rotate in the opposite direction R to release the front fold 10 of the next plate 2.
  • next plate 2 slides on the previous plate 2, above it.
  • the next plate 2 is stored in the storage medium 24 by being stacked and the previous plate 2 by resting in contact therewith.
  • next plate 2 is pressed into the storage medium 24 until its front fold 10 comes to fit on that of the previous plate 2, as shown in FIG. Figure 3 .
  • the front fold 10 of the previous printing plate 2, located below, is nested in the front fold 10 of the next printing plate, located above.
  • the front and rear folds 12 of the plates 2 are configured with a greater front fold height H to allow attachment and lateral positioning of the plate on the plate cylinder along the axis of the door cylinder -plate, and a lower fold height h lower for simple hanging.
  • Such a configuration is very favorable to top stacking with interlocking front folds 10 and reduces the volume of the stack of disassembled plates during production.
  • an impression plate stack 2 having their nested front plies can receive a high number of printing plates 2 in a small footprint. Thus, it is not necessary for an operator to remove the disassembled printing plates during production, but only at the end of production.
  • the storage device allows the storage of printing plates successively dismantled from the same plate cylinder, whether the printing plates mounted one behind the other on the circumference of the multi-plate plate cylinder. lap printing and used for the same print job, or printing plates used in several successive print jobs, made with a multi-plate lathe cylinder or lathe plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP13165789.2A 2012-04-27 2013-04-29 Verfahren zur Lagerung von Druckplatten, die nacheinander einem Plattenträgerzylinder einer Rundlaufpresse entnommen werden, und Lagervorrichtung Withdrawn EP2657026A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1253962A FR2989928A1 (fr) 2012-04-27 2012-04-27 Procede de stockage de plaques d'impression retirees successivement d'un cylindre porte-plaque d'une presse rotative et dispositif de stockage

Publications (1)

Publication Number Publication Date
EP2657026A1 true EP2657026A1 (de) 2013-10-30

Family

ID=46754591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13165789.2A Withdrawn EP2657026A1 (de) 2012-04-27 2013-04-29 Verfahren zur Lagerung von Druckplatten, die nacheinander einem Plattenträgerzylinder einer Rundlaufpresse entnommen werden, und Lagervorrichtung

Country Status (4)

Country Link
US (1) US20130333584A1 (de)
EP (1) EP2657026A1 (de)
CN (1) CN103373061A (de)
FR (1) FR2989928A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111267480B (zh) * 2020-03-06 2021-11-05 山东泰宝防伪制品有限公司 一种印刷机模板自动推进装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004085158A2 (de) * 2003-03-28 2004-10-07 Koenig & Bauer Aktiengesellschaft Vorrichtung und verfahren zum speichern von mindestens zwei druckzylinderaufzügen
DE202006020087U1 (de) * 2006-11-22 2007-10-25 Man Roland Druckmaschinen Ag Handhabungsvorrichtung einer Druckmaschine
DE102006061316A1 (de) * 2006-12-22 2008-07-03 Koenig & Bauer Aktiengesellschaft Vorrichtung mit mindestens einer Speicherebene für mindestens eine von einem Formzylinder einer Rotationsdruckmaschine abzuplattenden oder auf den Formzylinder aufzuplattenden Druckform
EP2186638A2 (de) * 2008-11-12 2010-05-19 manroland AG Aufnahmeeinrichtung für Druckplatten

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU548550B2 (en) * 1983-03-01 1985-12-19 Dart Industries Inc. Extensible workpiece manipulator
US4727807A (en) * 1985-09-30 1988-03-01 Tokyo Kikai Seisakusho Apparatus for automatically mounting and removing printing plates in rotary printing press
DE4130359C2 (de) * 1991-09-12 1997-04-17 Heidelberger Druckmasch Ag Vorrichtung zum Ab- und/oder Zuführen von Druckplatten einer Druckmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004085158A2 (de) * 2003-03-28 2004-10-07 Koenig & Bauer Aktiengesellschaft Vorrichtung und verfahren zum speichern von mindestens zwei druckzylinderaufzügen
EP1608512A2 (de) 2003-03-28 2005-12-28 Koenig & Bauer Aktiengesellschaft Vorrichtung und verfahren zum speichern von mindestens zwei druckzylinderaufzügen
DE202006020087U1 (de) * 2006-11-22 2007-10-25 Man Roland Druckmaschinen Ag Handhabungsvorrichtung einer Druckmaschine
DE102006061316A1 (de) * 2006-12-22 2008-07-03 Koenig & Bauer Aktiengesellschaft Vorrichtung mit mindestens einer Speicherebene für mindestens eine von einem Formzylinder einer Rotationsdruckmaschine abzuplattenden oder auf den Formzylinder aufzuplattenden Druckform
EP2186638A2 (de) * 2008-11-12 2010-05-19 manroland AG Aufnahmeeinrichtung für Druckplatten

Also Published As

Publication number Publication date
FR2989928A1 (fr) 2013-11-01
CN103373061A (zh) 2013-10-30
US20130333584A1 (en) 2013-12-19

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