EP2111986A2 - Dispositif de serrage pour plaques d' impression et cylindre de formage en étant équipé - Google Patents

Dispositif de serrage pour plaques d' impression et cylindre de formage en étant équipé Download PDF

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Publication number
EP2111986A2
EP2111986A2 EP09158238A EP09158238A EP2111986A2 EP 2111986 A2 EP2111986 A2 EP 2111986A2 EP 09158238 A EP09158238 A EP 09158238A EP 09158238 A EP09158238 A EP 09158238A EP 2111986 A2 EP2111986 A2 EP 2111986A2
Authority
EP
European Patent Office
Prior art keywords
clamping
forme cylinder
pressure plate
slot
clamping device
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Withdrawn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
EP09158238A
Other languages
German (de)
English (en)
Other versions
EP2111986A3 (fr
Inventor
Günter Koppelkamm
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.)
Manroland AG
Original Assignee
Manroland AG
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 Manroland AG filed Critical Manroland AG
Publication of EP2111986A2 publication Critical patent/EP2111986A2/fr
Publication of EP2111986A3 publication Critical patent/EP2111986A3/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Withdrawn legal-status Critical Current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
    • B41F27/12—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
    • 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

Definitions

  • the invention relates to an integratable into a forme cylinder of a printing unit of a rotary printing machine clamping device for printing plates and equipped with such a clamping device form cylinder for a printing unit of a rotary printing press.
  • Printing units of rotary printing machines such as from web-fed rotary printing presses, have a form cylinder, a transfer cylinder, an inking unit and usually a dampening unit.
  • On the form cylinder pressure plates are usually arranged, which is why the form cylinder are also referred to as a plate cylinder.
  • On the transfer cylinders usually blankets or blanket plates are positioned, which is why the transfer cylinders are also referred to as rubber cylinders.
  • clamping devices which are integrated in a clamping channel of the forme cylinder. With the help of such a clamping device, a leading end and / or a trailing end of at least one thrust plate to be clamped in the clamping channel can be clamped.
  • Clamping devices known from practice have a clamping element and an actuating element, wherein both the clamping element and the actuating element are integrated into a clamping channel of a forme cylinder.
  • the clamping element can be displaced between two positions, namely between a first position, in which the clamping element the leading end and / or the trailing end of the or each Pressure plate clamped, and a second position in which the clamping element releases the leading end and / or the trailing end of the or each pressure plate.
  • the invention has for its object to provide a clamping device and a form cylinder equipped with it, which are adapted for automatic plate change.
  • a clamping device for clamping printing plates on a forme cylinder of a printing unit of a rotary printing press on: first clamping means with a slot, wherein the first clamping means are arranged such that when integrated into the Form cylinder of the slot extending obliquely to the radial direction of the forme cylinder, so that in the slot an acute-angled bent leading end of at least one pressure plate is receivable, and second clamping means with a clamping element and an actuating element, wherein the second clamping means are arranged such that when integrated into the forme cylinder Actuating element is adjustable only in the axial direction of the forme cylinder and by axial adjustment of the actuating element, the clamping element exclusively in the radial direction of the forme cylinder in a nip between a first position in which the clamping element a Abkantwinkel of 90 degrees ( ⁇ possible manufacturing tolerances) enclosing trailing end of the at least one pressure plate can clamp, and a second position is adjustable
  • the leading end can thus be easily hooked eg by means of a robot arm in the slot of the first clamping means, after which at least one pressure roller is employed on the forme cylinder, which applies the pressure plate all around to the forme cylinder, while the forme cylinder relative to the pressure roller in the direction of the angling Forward is rotated about its axis of rotation.
  • the forme cylinder is rotated around its axis of rotation such that the pressure roller moves continuously on the surface of the pressure plate from its leading end toward its trailing end. Due to the tensile force acting tangentially in relation to the forme cylinder circumference and exerted on the pressure plate, the leading end of the pressure plate is drawn into the slot of the first tensioning means and is thus securely fixed without additional fixing means or pressure means.
  • the trailing end Once the trailing end has reached the second clamping means, it can be easily pressed into the nip of the second clamping means due to its angling and then clamped by means of the adjusted by the actuating element clamping member in the nip.
  • the angle of the trailing end is preferably selected such that the leg to be introduced into the clamping gap is aligned at the position of the clamping gap approximately at an angle of 90 degrees ( ⁇ possible manufacturing tolerances) to the peripheral surface of the forme cylinder. As a result, the trailing end is particularly easy to bring in the nip and remove it again.
  • the trailing end has a bending angle of 90 + 2 degrees. This makes it particularly easy to release the trailing end of the nip.
  • the second clamping means are arranged such that when integrated into the forme cylinder, the clamping element depending on the axial relative position of the actuating element to the clamping element either due to a spring force of at least one clamping spring for clamping the trailing end of the at least one pressure plate radially outwardly into the shifted first position or against the spring force for releasing the trailing end of the at least one pressure plate is displaced radially inwardly into the second position.
  • the slot of the first clamping means is formed so that the leading end can be received under clamping voltage in this.
  • the legs of the leading end to be inserted into the slot have a dish-spring-shaped bulge and the slot may be slightly smaller in width than a thickness of the leg of the leading end defined by the bulge.
  • the slot of the first tensioning means is bounded by a wall portion adjacent to the clamping element and on which a shoulder is formed for limiting a radially outward displacement of the clamping element in the first position.
  • the wall section additionally acts as a guide surface for the clamping element in its radially directed adjusting movement.
  • the first clamping means are formed by a first insertion element which can be disassembled into the forme cylinder.
  • the insertion element is e.g. is available as a vendor part and is easily interchangeable with wear or damage.
  • first clamping means according to the invention may also be molded integrally into the forme cylinder.
  • the second clamping means on a second insertion which can be disassembled integrated into the forme cylinder.
  • the insertion element is e.g. is available as a vendor part and is easily interchangeable with wear or damage. Furthermore, the assembly of the clamping device in the forme cylinder is facilitated in this way.
  • guide means are integrated in the slot of the first clamping means for axially aligning the at least one pressure plate on the forme cylinder.
  • the printing plate can be mounted in register easily on the form cylinder.
  • a clamping edge of the second clamping means with a shoulder, so that upon integration of the clamping device in the forme cylinder, a bending edge for the trailing end of the pressure plate in the region of the paragraph is hollowly receivable, and formed an inclined surface, resulting in integration of the clamping device extends obliquely in the form cylinder from the shoulder to the radial direction of the forme cylinder, so that the trailing end of the printing plate is deformed when clamping it in the direction of a Abkantwinkelwinkelverklein réelle.
  • an optionally applied to the forme cylinder corrosion protection coating can chip off in the region of the clamping edge. Furthermore, it is ensured that the trailing end, even if a thickening in the form of a material accumulation of corrosion protection coating is present in the region of the clamping edge, can still be threaded easily or without disabilities in the clamping channel or nip.
  • a forme cylinder is provided for a printing group of a rotary printing press, wherein a clamping device according to one or more of the preceding embodiments is integrated into the forme cylinder.
  • FIGS. 1 to 5 each show a schematic cross section through a forme cylinder 1 according to the invention in the region of a clamping device 10 according to the invention integrated into the forme cylinder 1
  • FIGS. 6 to 8 each show in perspective view assemblies of the clamping device 10 according to the invention.
  • the clamping device 10 integrated in the forme cylinder 1 has first clamping means 100 and second clamping means 200.
  • the first clamping means 100 are integrally formed in the form of cylinder according to the illustrated embodiment and have a slot 110, a slot 110 delimiting wall portion 120 and a clamping edge 130 on.
  • the slot 110 is incorporated obliquely to the radial direction of the forme cylinder 1 extending into this, so that, as in the Figures 1-5 represented, in the slot 110 an acute-angled bent leading end 21 of a printing plate 20 is receivable.
  • slot 110 guide means are integrated in the form of registration pins, which are mated with not shown recesses in the leading end 21 of the pressure plate 20 for axially aligning the pressure plate 20 on the forme cylinder first
  • the slot 110 of the first clamping means 100 is formed so that a formed on the leading end 21, plate spring-shaped bulge 21 a under clamping voltage in this is receivable.
  • the second clamping means 220 comprise a clamping element 210, an actuating element 220, a clamping gap 230, a clamping spring 240, stops 250 and an insertion element 260.
  • the clamping element 210 serves to clamp a trailing end 22 of the pressure plate 20 enclosing a bending angle of approximately 90 degrees (preferably 90 + 2 degrees).
  • the actuating element 220 serves to actuate the clamping element 210 for transferring it between two positions, namely between a first position the clamping element 210 clamps the trailing end of the pressure plate 20, and a second position in which the clamping element 210, the trailing end 22 of the pressure plate 20 releases.
  • the clamping element 210 is adjustable exclusively in the radial direction of the forme cylinder 10.
  • the actuating element 220 is adjustable only in the axial direction of the forme cylinder 10.
  • the clamping element 210 occupies one of the two positions, ie either the first position in which the clamping element 210 clamps the trailing end 22 of the pressure plate 20, or the second position in which the clamping element 210 the trailing end 22 of the pressure plate 20 releases.
  • clamping element 210 For this purpose cooperates with the clamping element 210 at least one clamping spring 240 which engages a radially inner surface of the clamping member 210 and the same caused by the spring force radially outward to the first position in which the clamping element 210, the trailing end 22 of the pressure plate 20 clamped suppressed.
  • the clamping element 210 By moving the actuating element 220 in the axial direction, the clamping element 210 against the spring force of the clamping spring 240 for releasing the trailing end 22 of the pressure plate 20 radially inwardly displaceable in the second position.
  • first bearing 221 are associated with the actuating element 220, which cooperate with guide elements 211 associated with the clamping element 210.
  • the guide curves 211 are displaceable together with the clamping element 210 exclusively in the radial direction.
  • the first bearings 221 are displaceable together with the actuating element 220 exclusively in the axial direction.
  • the actuating element 220 to the clamping member 210 and thus the first bearing 221 relative to the guide curves 211 occupy an axial relative position, in which the first bearing 221 aligned with low points of the guide curves 211, presses the clamping spring 240, the clamping member 210 radially outwardly into the first Position in which the clamping element 210, the trailing end 22 of the pressure plate 20 is stuck.
  • the clamping element 210 is displaceable exclusively in the radial direction of the forme cylinder 10, wherein the axial position of the clamping element 210 is fixed by lateral stops 250.
  • the stops 250 continue to serve as lateral stops for the actuator 220 in the circumferential direction of the forme cylinder first
  • the actuating element 220 is displaceable exclusively in the axial direction of the forme cylinder 1, its radial position being fixed by a section of the insertion element 260 defining a clamping edge 261 and a shoulder 121 formed on the wall section 120 of the first clamping device 100.
  • the shoulder 121 also serves to limit a radially outward displacement of the clamping member 210 in the first position.
  • the clamping edge 261 defining portion of the detachably mounted on the forme cylinder 1 insertion member 260 covers the actuator 220 radially from the outside.
  • the clamping edge 261 of the inserting element 260 together with the shoulder 121 integrally formed on the shoulder 121, defines a clamping gap 230 in which, for clamping the trailing end 22 of the pressure plate 20, a projection 212 of the clamping element 210 in the first position thereof (see in particular FIG Figure 4 and Figure 5 ) intervenes.
  • the actuating element 220 in addition to the first bearings 221, which cooperate with the guide curves 211 of the clamping element 210, further comprises second bearings 222, 223.
  • the second bearing 222 are radially inward and second bearings 223 are positioned radially outward.
  • the second bearings 222 roll relative to the clamping element 210 on a radially inner surface 271 of a recess 270 incorporated in the forme cylinder 1.
  • the second bearings 223 roll on a surface 262 of the insertion element 260. This is best Figure 5 be removed.
  • the second bearings 222, 223 serve for the radial fixation or mounting of the actuating element 220.
  • the clamping element 210 and the actuating element 220 are integrated into the recess 270 in the forme cylinder 10 in such a way that they are positioned next to one another in the circumferential direction.
  • the first bearings 221 are associated with the actuating member 220 and the guide curves 211 of the clamping member 210 on opposite, adjacent side surfaces thereof.
  • the guide curves 211 are assigned to the clamping element 210 and the first bearings 221 to the actuating element 220. In contrast, it is also possible that the guide curves the actuating element and the first bearing are associated with the clamping element.
  • FIGS. 1 to 5 by way of example, the clamping of a pressure plate 20 onto the forme cylinder 1 is described.
  • the pressure plate 20 to be tensioned is suspended by means of a robot arm of an automatic plate changing system with its leading end 21 into the slot 110. Thereafter, at least one pressure roller 30 is employed on the forme cylinder 1, so that the pressure plate as in Fig.1 shown pressed on the circumference of the forme cylinder 1.
  • the forme cylinder with respect to the pressure roller 30 is rotated about its axis of rotation so that the pressure roller 30 moves continuously on the surface of the pressure plate 20 from the leading end 21 toward the trailing end 22 towards.
  • the clamping element 210 Shortly before the pressure roller 30 reaches the trailing end 22, the clamping element 210 is set in the second position, so that the clamping gap 230 is released for receiving the trailing end 22 (see Fig.2 ).
  • the clamping edge 261 of the second clamping means 200 and the insert member 260 is formed with a shoulder 263 so that the bending edge for the trailing end 22 of the pressure plate 20 is hollowly received in the region of the shoulder 263, and an inclined surface 264 extending from the Paragraph 263 extends obliquely to the radial direction of the forme cylinder 1, so that the trailing end 22 of the pressure plate 20 is deformed when clamping it in the direction of a Abkantwinkelwinkelverkleintation.

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP09158238A 2008-04-21 2009-04-20 Dispositif de serrage pour plaques d' impression et cylindre de formage en étant équipé Withdrawn EP2111986A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810019975 DE102008019975A1 (de) 2008-04-21 2008-04-21 Spanneinrichtung für Druckplatten und damit ausgerüsteter Formzylinder

Publications (2)

Publication Number Publication Date
EP2111986A2 true EP2111986A2 (fr) 2009-10-28
EP2111986A3 EP2111986A3 (fr) 2010-07-14

Family

ID=40887046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09158238A Withdrawn EP2111986A3 (fr) 2008-04-21 2009-04-20 Dispositif de serrage pour plaques d' impression et cylindre de formage en étant équipé

Country Status (3)

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EP (1) EP2111986A3 (fr)
CN (1) CN101564932A (fr)
DE (1) DE102008019975A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009047674A1 (de) * 2009-12-08 2011-06-09 Manroland Ag Druckwerk einer Druckmaschine und Verfahren zum Wechseln mindestens einer Druckplatte an einem solchen Druckwerk
CN106696442B (zh) 2017-02-14 2018-12-28 武汉华星光电技术有限公司 一种配向膜印刷版的补正系统及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913701A1 (de) 1999-03-26 2000-09-28 Heidelberger Druckmasch Ag Einrichtung zum Spannen von Druckformen in Spannkanälen reduzierter Größe
EP1834772A2 (fr) 2006-03-11 2007-09-19 MAN Roland Druckmaschinen AG Machine d'impression et procédé destiné au fonctionnement de celle-ci
EP1992487A2 (fr) 2007-05-18 2008-11-19 manroland AG Dispositif de serrage pour plaques d'impression et cylindre de cliché

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319167C2 (de) * 1993-06-09 1995-04-27 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE19703290A1 (de) * 1997-01-30 1998-08-06 Roland Man Druckmasch Vorrichtung zum Befestigen einer flexiblen Bespannung auf einem Druckzylinder
DE10324330A1 (de) * 2003-05-27 2004-12-30 Man Roland Druckmaschinen Ag Plattenzylinder einer Druckmaschine
DE202004020725U1 (de) * 2004-07-21 2005-12-15 Man Roland Druckmaschinen Ag Übertragungszylinder für eine Rollenrotationsdruckmaschine
DE102006012760A1 (de) * 2006-03-17 2007-09-20 Man Roland Druckmaschinen Ag Vorrichtung zum Befestigen einer flexiblen Bespannung auf einen Druckzylinder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913701A1 (de) 1999-03-26 2000-09-28 Heidelberger Druckmasch Ag Einrichtung zum Spannen von Druckformen in Spannkanälen reduzierter Größe
EP1834772A2 (fr) 2006-03-11 2007-09-19 MAN Roland Druckmaschinen AG Machine d'impression et procédé destiné au fonctionnement de celle-ci
EP1992487A2 (fr) 2007-05-18 2008-11-19 manroland AG Dispositif de serrage pour plaques d'impression et cylindre de cliché

Also Published As

Publication number Publication date
CN101564932A (zh) 2009-10-28
EP2111986A3 (fr) 2010-07-14
DE102008019975A1 (de) 2009-10-22

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