EP1038672B1 - Dispositif de tension des plaques à imprimer dans des gorges de calage ayant une taille réduite - Google Patents

Dispositif de tension des plaques à imprimer dans des gorges de calage ayant une taille réduite Download PDF

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Publication number
EP1038672B1
EP1038672B1 EP00103375A EP00103375A EP1038672B1 EP 1038672 B1 EP1038672 B1 EP 1038672B1 EP 00103375 A EP00103375 A EP 00103375A EP 00103375 A EP00103375 A EP 00103375A EP 1038672 B1 EP1038672 B1 EP 1038672B1
Authority
EP
European Patent Office
Prior art keywords
printing form
cylinder
printing
holding
tensioning
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
EP00103375A
Other languages
German (de)
English (en)
Other versions
EP1038672A2 (fr
EP1038672A3 (fr
Inventor
Frank Chagnon
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 Montataire SA
Original Assignee
Heidelberger Druckmaschinen 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
Priority claimed from DE19913701A external-priority patent/DE19913701A1/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1038672A2 publication Critical patent/EP1038672A2/fr
Publication of EP1038672A3 publication Critical patent/EP1038672A3/fr
Application granted granted Critical
Publication of EP1038672B1 publication Critical patent/EP1038672B1/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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means

Definitions

  • the device for holding a printing plate on a support cylinder on a Rotary printing machine is located on a support cylinder with an outer to the axis of rotation of the support cylinder cylindrical peripheral surface and at least an inner longitudinal bore which is in the outer peripheral surface by means of a Longitudinal slot opens.
  • hook-forming agents with at least one radially outer and to the axis of rotation of the support cylinder formed against the direction of rotation hook.
  • means for Actuate the hook-forming means provided, which at least partially in the Bore of the support cylinder are arranged and are suitable for the hook in to move back and forth in a controlled manner.
  • the hook-forming means are also inserted into the slot and the hook is standing in the front end position over the outer peripheral surface of the support cylinder about.
  • the actuating means are suitable during the movement of the front end position to the rear end position the withdrawal of the hook in the slot and during the movement from the rear end position to the forward end position the protrusion of the hook with respect to the outer To cause peripheral surface of the support cylinder.
  • the hook-forming means comprise at least one longitudinal sheet having a first one with respect to the Has axis of rotation of the support cylinder radially inner end portion, with a Tension rod is firmly connected inside the bore and a second longitudinal end portion, which is with respect to the axis of rotation of the support cylinder is located radially outside and which forms the hook, and the sheet between its first end region and its second end region elastically deformed.
  • EP 0 678 383 A1 discloses a device for changing printing forms Rotary printing machines known. Both ends of a printing form are in the channel of a printing form cylinder, the surface of the printing form is wound around the printing form cylinder. According to this solution, one is a printing form A currently located on the printing form cylinder Device provided which is located on the printing form cylinder Printing form A takes up after this from the clamping devices of the Printing form cylinder is released and a device for feeding a new printing form B, which a new printing form to be applied to the Printing form cylinder brought up.
  • the device disclosed here draws is characterized in that at a short distance from the lateral surface of the Printing form cylinder horizontally movable holding elements of a leading edge Fix the printing form to be fed until remotely adjustable swiveling Holding means the front edge of the printing form B to be fed to the outer surface of the printing form cylinder.
  • EP 0 734 859 A1 relates to a device for changing Printing forms.
  • a swiveling printing form loading unit comprises both Printing form feeder as well as a printing form removal compartment.
  • the Printing form loading unit is both in a working position on the channel one Printing form cylinder with clamping devices as well as in a loading position swiveling, in which the printing form loading unit from the working position withdrawn.
  • the one that swivels into a vertical loading position Printing form loading unit can be pivoted onto a holding element, on which a Inlet area for a printing form and the printing form cylinder Conveyors for a to be applied to the printing form cylinder Printing form are provided.
  • EP 0 741 021 A1 discloses a device for connecting holding elements with a traverse of a printing form cylinder.
  • the device allows that Fixing a flexible printing form on the circumference of the printing form cylinder a rotary printing press, the leading edge of the flexible printing form engages over a front edge of a channel of the printing form cylinder and the Trailing edge of the flexible printing form by at least one on the crossbar
  • Actuatable, resilient holding element can be fixed, which on the the periphery facing end has and is a hook-shaped projection characterized in that several holding elements can be arranged side by side can be positively locked to the crossbar with locking devices.
  • the Holding elements can be inserted vertically in guides on the crossbar.
  • the device can be used for the assembly of printing forms without tools.
  • EP 0 680 826 A2 relates to a device for fastening a flexible pressure plate.
  • This includes an axial cylinder pit, the leading one edge Plate leg carries and in which a spindle rotatable about its axis is arranged is.
  • a spindle rotatable about its axis is arranged is.
  • the Spindle has a driving edge with which it is formed on a particular V-shaped Notch of the leading plate leg attacking it tightens.
  • US 5,213,038 relates to a plate changing device for rotary printing presses.
  • a tension shaft is received in a bore in the peripheral area of a plate cylinder and contains a receiving opening over almost its entire length.
  • a number of leaf springs are included in the opening .
  • Each leaf spring is U-shaped educated. One end is provided with a pressure area, which is the front edge the printing form presses against a wall of the clamping channel.
  • the other end of the U-shaped Leaf spring includes a curved area with which a folded end of the Printing form is gripped and held on the peripheral surface of the plate cylinder.
  • the tensioning shaft is moved in its respective specific direction of rotation emotional.
  • An actuator is coupled to one end of the tension shaft.
  • a pressure roller extends in the axial direction of the plate cylinder in the area the peripheral surface of the plate cylinder and is by means of a drive on the front edge movable to or away from the printing form.
  • the invention is based on the object the manual mounting of a finite printing plate onto a printing form cylinder or to facilitate or improve by means of automatic printing form feed devices.
  • this object is achieved in that in a device for Holding a printing form on the periphery of a printing form cylinder, with a leading edge the printing form, a leading edge of a along the peripheral surface of the printing form cylinder extending clamping channel overlaps and the rear edge of the flexible printing form can be fixed by at least one spring element attached to a tension shaft, individual spring elements are arranged next to one another and the ones that are received on the tensioning shaft, individually mounted spring elements with the rear edge of the printing form Reach behind the game, the ends of the spring elements, the rear edge within the Tensioning channel, which of a channel side wall having a recess is limited and trapezoidal, starting from an inner surface of a cylinder bore extends in the direction of a pressure-free space in the radial direction, reach under and that the ends of the spring elements engaging under the printing form in the recess Immerse the channel side wall of the clamping channel in the printing form cylinder.
  • the spring elements are by means of individual support pins, one of which is a spring element is assigned, supported in the channel of the tension shaft.
  • the actuating movement of the actuating unit for example as a pneumatic one Rapid cylinder with quick ventilation is formed by means of an adjusting lever transferred to the expansion shaft approach.
  • the tension lever is from a bracket enclosed; the bracket can also serve to adjust the movement of the Limit the tension lever.
  • the tension shaft on which the individual spring elements are mounted is in three Storage points, designed as annularly extending surfaces, in Printing form cylinder mounted, on both faces of the cylinder and in the center, see above that smooth operation of the tension shaft is guaranteed. Via side Openings, on the cylinder, the tension shaft can be completely removed from the Printing form cylinders are pulled out to the side.
  • the device according to the invention can be particularly advantageously used in Use printing form cylinders of rotary printing machines, be they sheet or Fed rotary printing presses.
  • Use printing form cylinders of rotary printing machines be they sheet or Fed rotary printing presses.
  • the small, remaining non-printing The area around the tensioning channel saves printers considerable paper costs.
  • the tension shaft 1 On the tension shaft 1, two outer bearing webs A, B are provided and one middle bearing web C.
  • the middle bearing web C divides the tension shaft 1 into two sections, the two sections being of equal length.
  • the tension shaft 1 is traversed along the axial extent by a recess in which individual spring elements 2 mounted next to one another on the tensioning shaft 1 are provided. These spring elements 2 are in the for clarity perspective view according to FIG. 1 omitted.
  • FIG. 2 shows an exploded view of the tension shaft in perspective Presentation.
  • the tension shaft 1 comprises a recess extending in the axial direction, not shown here, in which individual spring elements 2 are embedded.
  • the Spring elements 2 include both longitudinal slots D and themselves extending slots with which the spring elements 2 by means of stiff, in the Recess attached support pins 3 in the recess of the Printing form cylinder can be locked.
  • the spring elements 2 are on the support pins 3 fastened with screws 5, which with a collar 6th are provided.
  • the tension shaft 1 there are eight Spring elements 2 arranged side by side in the channel 19 of the Printing form cylinder 20 let in, which support the spring elements 2 Support pins 3 are received by the axially extending recess.
  • the tensioning shaft 1 is provided on its end faces A, B with tensioning lugs 8, also referred to as torsion bars, provided in the illustrated Embodiment are designed as a clamping lug with a square profile. Triangular profiles or multi-wedge profiles that form a positive connection with an attachable clamping tool or a pneumatic or hydraulic one enable actuatable clamping tool are also conceivable.
  • the one in Fig. 2 The bearing web A shown is provided with an opening Bearing shield 7 enclosed, which on a recess of the end face of the Printing form cylinder 1 can be attached.
  • the protruding from the bearing web A of the tensioning shaft 1 is 8 enclosed by an opening in the control lever 10.
  • the actuating lever 10 is surrounded by a bracket 14 which is on the side of the Front of the printing form cylinder can be screwed.
  • an adjusting element 15 at its upper end provided which is provided with a spring 24, so that on the Top of the manual control element 15 provided a manual approach Adjustment of the control lever 10 and thus the tension shaft 1 remains possible.
  • the Approach for the tool on the upper part of the hand control element 15 can for example as a socket wrench - be it as a square, Hexagonal or multi-wedge profile.
  • the one provided at the lower end, via a yoke with the lower part of the Actuating lever 10 on the cylinder end side of the actuating cylinder 11 is equipped with a Provide quick exhaust 12 so that its operation is very quick can.
  • the actuation time for the movement of the tension shaft 1 can thus be on Minimum be reduced.
  • Fig. 3 shows a cross section through the tension shaft 1 in a bit enlarged scale.
  • the tension shaft 1 is in its axial extent with a recess provided, in which the support pins 3 are embedded, on which the Spring elements 2 are added.
  • the individual support pins 3 are 3 penetrated by screws 5 with a collar element 6 are provided.
  • the screws 5 extend into a thread that inside the tension shaft 1 is formed.
  • the spring elements 2 are connected to the support pin 3.
  • a tensioning lug 8 is formed in the center thereof, in the 3 as a square.
  • Fig. 4 shows a perspective top view of a cylinder face of the Plate cylinder.
  • the clutch 23 is shown in front of it.
  • the control lever 10 extends along the end face 21 of the printing form cylinder 20, the actuating lever 10 actuating actuator 11 is flanged in the lower region of the end face 21.
  • the actuating unit 11, which is designed, for example, as a pneumatic actuating cylinder can be provided with a quick exhaust 12, so that the operating times drastically shorten.
  • a Tool On the clutch 9 is the tool attachment for a manual Actuator provided, see also Fig. 5.
  • a Tool can be a bolt provided below the starting point 15 twist, which is biased by a spring 24 with which the Tension shaft approach and the lever 10 is actuated.
  • Fig. 5 shows the side view of the printing form cylinder end face 21 and in Detail three cross sections through the tension shaft bearing.
  • the actuating lever 10 is connected at its lower end to the actuating unit 11 and includes with its upper end - as already explained above - the Tension shaft extension 8 of the tension shaft 1.
  • the adjusting lever 10 is of a bracket 14 enclosed, with which the travel range is limited.
  • the detail according to FIG. 5 at the top left shows the view of the adjusting lever 10 Removed clutch 23 above the cylinder pin 22.
  • the adjusting lever 10 encloses the tension shaft extension 8 and includes one below the Unlocking element 15 lying spring 24 which the unlocking element 15th encloses.
  • By turning the unlocking element 15 can Pressure drop in the pneumatic actuator 11, which is quite a Commercially available pneumatic cylinder can be an actuation of the tension shaft 1 be guaranteed.
  • 5 is the setting lever 10 removed, whereby the bearing plate 7 is visible. In this is a bearing A Tensioning shaft 1 is added and can be connected with a Grease filling or the like can be provided to make it easy to move guarantee.
  • the Channel 19 is from a left channel side wall 19.1 and one opposite channel side wall 19.2 limited, in which a Recess F is embedded.
  • the one between the opposite Edges of the channel side walls 19.1, 19.2 of the channel 19 result in pressure-free Room G is a few millimeters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (12)

  1. Dispositif de maintien d'une forme d'impression (16) sur la périphérie d'un cylindre de forme d'impression (20), un bord avant (17) de la forme d'impression (16) saisissant, par le dessus, un bord avant d'une gorge de calage (19) s'étendant le long de la surface périphérique du cylindre de forme d'impression (20), et le bord arrière (18) de la forme d'impression (16) flexible étant susceptible d'être fixé au moyen d'au moins un élément élastique (2) fixé sur un arbre tendeur (1), différents éléments élastiques (2) étant disposés les uns à côté des autres, et les éléments élastiques (2) montés individuellement, supportés sur l'arbre tendeur (1), saisissent par l'arrière, avec un jeu (T), le bord arrière (18) de la forme d'impression (16), caractérisé en ce que les extrémités des éléments élastiques (2) saisissent par le dessous le bord arrière (18) dans une gorge de calage mécanique (19), délimitée par une paroi latérale de gorge (19.2), présentant un évidement (F, J), et s'étendant en direction radiale dans la direction d'un espace (G) sans pression, en forme de trapèze, en partant d'une face intérieure (26) d'un perçage cylindrique, et en ce que les extrémités, saisissant par le dessous le bord arrière (18) de la forme d'impression (16), des éléments élastiques (2) pénètrent dans l'évidement (F, J) de la paroi latérale de gorge (19.2) de la gorge de calage (19), réalisée dans le cylindre de forme d'impression (20),
  2. Dispositif de maintien d'une forme d'impression selon la revendication 1, caractérisé en ce que les éléments élastiques (2) sont soutenus dans la gorge de l'arbre tendeur (1) à l'aide de tiges de soutien (3) individuelles.
  3. Dispositif de maintien d'une forme d'impression selon la revendication 1, caractérisé en ce que les éléments élastiques (2) ressortent de la surface périphérique (25) de l'arbre tendeur (1) par un tronçon notable de leur longueur.
  4. Dispositif de maintien d'une forme d'impression selon la revendication 1, caractérisé en ce que l'extrémité, saisissant par l'arrière l'arête arrière (18) de la forme d'impression (16), de l'élément élastique (2), tend l'arête arrière (18) dans la direction d'un rayon (R) de la paroi latérale gauche de gorge (19.1).
  5. Dispositif de maintien d'une forme d'impression selon la revendication 1, caractérisé en ce que l'arbre tendeur (1) est actionné par l'intermédiaire d'un appendice d'arbre tendeur (8), à l'aide d'une unité de réglage montée sur la face frontale (21) du cylindre de forme d'impression (20).
  6. Dispositif de maintien d'une forme d'impression selon la revendication 1, caractérisé en ce que le déplacement d'un levier de commande (10) est susceptible d'être limité à l'aide d'un étrier (14, 15).
  7. Dispositif de maintien d'une forme d'impression selon la revendication 6, caractérisé en ce qu'une unité de réglage (11), à l'aide de laquelle l'arbre tendeur (1) est susceptible d'être actionné, est montée sur la face frontale (21) du cylindre de forme d'impression (20).
  8. Dispositif de maintien d'une forme d'impression selon la revendication 1, caractérisé en ce que l'arbre tendeur (1) est supporté, à l'aide de trois nervures de tourillonnement (A, B, C), dans un perçage du cylindre de forme d'impression (20).
  9. Dispositif de maintien d'une forme d'impression selon la revendication 1, caractérisé en ce que l'arbre tendeur (10) peut être enlevé complètement du cylindre de forme d' impression (20), après avoir procédé au démontage de l' un des flanques de palier (7, 23).
  10. Cylindre de forme d'impression muni d'un dispositif pour le maintien d'une forme d'impression, selon l'une ou plusieurs des revendications 1 à 19.
  11. Groupe d'impression d'une machine à imprimer rotative, muni d'un dispositif de maintien d'une forme d'impression sur la périphérie d'un cylindre de forme d'impression selon l'une ou plusieurs des revendications 1 à 9.
  12. Groupe d'impression d'une machine à imprimer rotative, muni d'un cylindre de forme d'impression, contenant un dispositif de maintien d'une forme d'impression sur la périphérie d'un cylindre de forme d'impression selon une ou plusieurs des revendications 1 à 9.
EP00103375A 1999-03-26 2000-02-23 Dispositif de tension des plaques à imprimer dans des gorges de calage ayant une taille réduite Expired - Lifetime EP1038672B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19913701A DE19913701A1 (de) 1999-03-26 1999-03-26 Einrichtung zum Spannen von Druckformen in Spannkanälen reduzierter Größe
DE19913701 1999-03-26
FR0000635 2000-01-19
FR0000635A FR2791300B1 (fr) 1999-03-26 2000-01-19 Dispositif de fixation de plaques d'impression dans des canaux de fixation de grandeur reduite

Publications (3)

Publication Number Publication Date
EP1038672A2 EP1038672A2 (fr) 2000-09-27
EP1038672A3 EP1038672A3 (fr) 2001-04-11
EP1038672B1 true EP1038672B1 (fr) 2003-12-03

Family

ID=26052594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103375A Expired - Lifetime EP1038672B1 (fr) 1999-03-26 2000-02-23 Dispositif de tension des plaques à imprimer dans des gorges de calage ayant une taille réduite

Country Status (4)

Country Link
US (1) US6601508B1 (fr)
EP (1) EP1038672B1 (fr)
JP (1) JP4921628B2 (fr)
AT (1) ATE255502T1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10342740A1 (de) * 2003-09-16 2005-04-21 Goss Int Montataire Sa Verfahren zum Ändern des Befestigungszustands einer Druckform auf einem Druckformzylinder
DE102004034049A1 (de) * 2004-07-13 2006-02-09 Man Roland Druckmaschinen Ag Formzylinder einer Rollenrotationsdruckmaschine
JP4699106B2 (ja) * 2005-06-24 2011-06-08 三菱重工印刷紙工機械株式会社 保持装置
US20080216691A1 (en) * 2007-03-05 2008-09-11 Stephens Ronald F Printing plate lock mechanisms

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198376B (de) * 1964-04-29 1965-08-12 Roland Offsetmaschf Anordnung zum Befestigen des Gummituches auf dem Gummizylinder von Offsetdruckmaschinen
US3727551A (en) * 1971-07-22 1973-04-17 North American Rockwell Reversible lockup for flexible printing plate
US3757691A (en) 1972-06-12 1973-09-11 North American Rockwell Printing cylinder
JP3030582B2 (ja) * 1991-09-19 2000-04-10 株式会社小森コーポレーション 輪転印刷機の刷版交換装置
DE4234332A1 (de) * 1992-10-12 1994-04-14 Heidelberger Druckmasch Ag Aufspannvorrichtung zum Befestigen einer biegsamen Druckform auf der Mantelfläche eines Zylinders
FR2709090B1 (fr) * 1993-08-20 1995-11-10 Heidelberg Harris Sa Dispositif à crochet et escamotable pour maintenir une plaque d'impression sur un cylindre porte-plaque, dans une imprimante rotative, et imprimante rotative comportant un tel dispositif.
FR2709091B1 (fr) 1993-08-20 1995-11-10 Heidelberg Harris Sa Dispositif à lame interchangeable pour maintenir une plaque d'impression sur un cylindre porte-plaque dans une imprimante rotative, et outil de démontage de la lame.
DE4404758C2 (de) 1994-02-15 1996-06-27 Roland Man Druckmasch Verfahren und Vorrichtung zum Wechseln der Bespannung eines Zylinders einer Rollenrotationsdruckmaschine
FR2718675B1 (fr) 1994-04-18 1996-07-12 Heidelberg Harris Sa Dispositif d'échange de clichés de machines rotatives à imprimer.
DE4415683C2 (de) * 1994-05-04 1998-04-09 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE19509563C2 (de) * 1995-03-16 1997-01-23 Koenig & Bauer Albert Ag Zylinder mit einer Vorrichtung zum Spannen von Platten
FR2732267B1 (fr) 1995-03-31 1997-06-20 Heidelberg Harris Sa Dispositif de changement de formes d'impression
FR2733718B1 (fr) 1995-05-04 1997-08-01 Heidelberg Harris Sa Dispositif de liaison entre des elements de retenue et une traverse d'un cylindre de forme d'impression
JPH0966598A (ja) * 1995-08-31 1997-03-11 Komori Corp 輪転印刷機の版取付構造
DE29600845U1 (de) 1996-01-19 1996-03-07 MAN Roland Druckmaschinen AG, 63075 Offenbach Vorrichtung zum Befestigen einer Bespannung auf einem Druckwerkzylinder
DE19729375A1 (de) * 1997-07-09 1999-01-14 Ltg Lufttechnische Gmbh Vorrichtung zum Befestigen einer biegsamen Platte auf dem Umfang des Zylinders einer Lackiermaschine
FR2776566B1 (fr) * 1998-03-27 2000-06-16 Heidelberger Druckmasch Ag Cylindre de groupe d'impression equipe d'une plaque d'impression a extremites coudees, se fixant sur lui, pour machines rotatives a imprimer
FR2776567B1 (fr) * 1998-03-31 2000-06-16 Heidelberger Druckmasch Ag Dispositif de maintien d'une plaque d'impression sur un cylindre porte-plaque d'une machine d'impression rotative
DE10003937C2 (de) * 2000-01-29 2003-02-27 Roland Man Druckmasch Vorrichtung zum Befestigen von biegsamen Druckformen

Also Published As

Publication number Publication date
US6601508B1 (en) 2003-08-05
JP4921628B2 (ja) 2012-04-25
JP2000301694A (ja) 2000-10-31
ATE255502T1 (de) 2003-12-15
EP1038672A2 (fr) 2000-09-27
EP1038672A3 (fr) 2001-04-11

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