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EP0739728B1 - Procédé et dispositif pour fixer un cliché sur un cylindre - Google Patents

Procédé et dispositif pour fixer un cliché sur un cylindre Download PDF

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Publication number
EP0739728B1
EP0739728B1 EP96105769A EP96105769A EP0739728B1 EP 0739728 B1 EP0739728 B1 EP 0739728B1 EP 96105769 A EP96105769 A EP 96105769A EP 96105769 A EP96105769 A EP 96105769A EP 0739728 B1 EP0739728 B1 EP 0739728B1
Authority
EP
European Patent Office
Prior art keywords
press
plate
printing
tension
printing plate
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
EP96105769A
Other languages
German (de)
English (en)
Other versions
EP0739728A2 (fr
EP0739728A3 (fr
Inventor
Glenn A. Guaraldi
Warren H. Jarrard
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.)
Heidelberger Druckmaschinen AG
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
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0739728A2 publication Critical patent/EP0739728A2/fr
Publication of EP0739728A3 publication Critical patent/EP0739728A3/fr
Application granted granted Critical
Publication of EP0739728B1 publication Critical patent/EP0739728B1/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
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • 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
    • B41P2227/62—Devices for introducing printing plates

Definitions

  • the present invention relates to a method and a Device for clamping a printing plate on one Cylinder.
  • US 5,284,093 discloses a plate cylinder with a semi-automatic plate clamping device.
  • An Rotatable plate cylinder carrying pressure plate has one open channel and a tensioning element on that in the channel is movably attached.
  • the tensioning element is in the channel inside in a closed position and outside in an open position movable.
  • the clamping element becomes one subjected to the first centrifugal force, which forces it to Rotate the plate cylinder from the closed position to move outwards.
  • a compensation element is used when turning the plate cylinder of a second centrifugal force subject. Connecting bolts align the second Centrifugal force compared to the first centrifugal force the clamping element.
  • US 4,577,560 discloses a gapless plate tensioner for offset printing cylinders. As can be seen, they are one stationary jaw and a movable jaw in the Cylinder of an offset rotary printing machine attached.
  • the Jaws are opposite to undercut ones Surfaces that form a recess in which end parts an offset plate or a metal-supported rubber blanket be clamped between the jaws.
  • the end parts have a slight tendency to sit on the outer edge of the Jaws to compress what is overcome by a Anti-crawling device that acts when the jaws close the end parts is deformed and one on the end parts directed, inward force.
  • EP 0 531 748 A1 discloses a device for a Plate change.
  • One stored in a sliding device The roller is opposite a tensioning device in the channel Printing unit cylinder attached.
  • the outer surface of the roller comes into contact with the rear edge of a pressure plate, while the roller is perpendicular to the printing cylinder emotional. Since the roller only covers a linear area, it is difficult to use this roller for smooth simultaneous Contact with the leading edge and the trailing edge of one insert truck plate.
  • US 5,211,112 discloses a device for clamping a Plate on a plate cylinder.
  • This device includes a pair of right and left support levers, one Plate pressure roller and a plate pressure pad with one Spring element.
  • the plate pressure roller forces the plate against the circumferential surface of the plate cylinder, if this around the Plate cylinder is wound.
  • the plate pressure pad is attached to a bracket to hold the free ends of the To connect the pair of support levers, and has an elastic Surface for pressing the rear end of the plate on.
  • EP 0 551 166 A1 shows a plate changing device for Printing machines.
  • actuators including one Plate pressure roller arranged.
  • the front edge of a pressure plate between the Gripper surfaces of a plate leading edge clamping device inserted, and the trailing edge of the pressure plate is between the gripper surfaces of a plate trailing edge clamping device introduced.
  • the platen roller does not force both edges of the Pressure plate simultaneously in the respective Plate clamp while the plate cylinder is in a certain rotational position.
  • EP 0639454 A1 relates to a device with a retractable hook for holding a printing plate on a support cylinder in a Rotary printing press and a rotary printing press with one such device.
  • the printing plate with a front edge on it the outer surface of the support cylinder is held, by the way a hook of a rear end fold held on a hook that with respect to the support cylinder between a front end position, in which he a protrusion on the outer peripheral surface Allows you to hook or unhook the rear end folds and one retracted position in which it is movable with respect to this outer Peripheral surface is withdrawn and the pressure plate him on the outer Keeps the peripheral surface under tension in the wound state.
  • an apparatus for Clamping a printing plate on a printing unit cylinder features specified in claims 1 and 15, respectively.
  • the Pressing device the front edge and the rear edge of the Pressure plate at the same time under the tensioning rail Plate cylinder.
  • the pressure bar contacts at her Treatment into the plate cylinder the surface of the Tensioning rail.
  • the protective device can be a wound around the pressing device and with a Clamping element acted upon by spring force Be protective sleeve.
  • the protective sleeve can, for. B. from one rubber-like material or made of polyurethane, polyester or the like or be made of elastic fabric.
  • the protective sleeve can be moved on the Pressure device be attached.
  • a pressure bar according to the embodiments of the present invention can be moved by a piston which by supplying pressure (e.g. air or Liquid pressure pressure) in a in the housing of the Pressure device provided pressure chamber is actuated.
  • pressure e.g. air or Liquid pressure pressure
  • Fig. 1 shows a printing unit with a plate cylinder 1 and a blanket cylinder 2. On the peripheral surface of the Plate cylinder 1, a pressure plate 6 is to be attached.
  • the plate cylinder 1 are a first applicator roller 3, one second applicator roller 4 and a third applicator roller 5 assigned to transfer color to its surface. Of the Plate cylinder 1 transfers a print image to the Blanket cylinder 2 and this transfers the print image a web of material.
  • the pressure plate 6 attached to the plate cylinder has a leading edge 7 and a trailing edge 8 (as in FIG. 2 shown), which is clamped by means of a clamping rail 11 become.
  • the tensioning rail 11 is in an open channel in the plate cylinder 1 shown opening, wherein the The front and rear edge of the panel are recorded, attached and consists of an elongated body 12, the is connected to a leveling mass 13.
  • the Leveling compound 13 is acted upon by springs 17 (e.g. Coil springs or the like.)
  • springs 17 e.g. Coil springs or the like.
  • a holding element, for. Legs Retaining spring 14 is on by means of a fastener 15 the tensioning rail 11 attached.
  • the pressing device 9 comprises a pressure bar 10, which is in a holder is included, which is rotatable about an axis of rotation 18 is appropriate.
  • the axis of rotation 18 is in turn with a Bracket 19 connected under the on the Plate cylinder 1 plate 6 is arranged.
  • Fig. 2 shows the clamped, partially around the Plate cylinder 1 wound plate 6.
  • the tensioning rail 11 automatically emerges from the peripheral surface the plate cylinder (e.g. due to liquid pressure and / or centrifugal force) while the plate cylinder still spins.
  • the plate leading edge 7 remains on the outer End 25 of the plate cylinder 1 bent after the Clamping rail 11 in the open channel 24 of the Plate cylinder 1 has moved laterally.
  • the Press device 9 keeps its downward inclined Position so that the plate 6 has an area between the Circumferential surface of the plate cylinder 1 and the surface of the Pressure bar 10, which is retracted in its closed, remains inactive position, can happen.
  • the tensioning rail 11 also has an upper recess 20 and a lower recess 21, in which the retaining spring 14 is attached. Furthermore, the tensioning rail 11 has one end part 22 thereof a stop surface 23 to limit the movement of the Tensioning rail 11 within the open channel 24 of the Plate cylinder 1 on.
  • Fig. 3 shows the clamping rail 11 of the plate cylinder 1 in its rotational position in relation to the pressing device 9. 3, the plate cylinder 1 has a Revolution finished.
  • the tensioning rail 11 is still in her open position.
  • the rear edge 8 of the plate 6 is now in the retaining spring 14 of the tensioning rail 11 of the Plate cylinder 1 has been inserted and the Front edge 7 of the plate 6 remains over the outer end 25 of the Plate cylinder bent.
  • the plate trailing edge 8 is now between the outer surface 16 of the tensioning rail 11 and the Surface of the pressure bar 10 held.
  • the rear edge 8 provisionally pressed into the tensioning rail 11, if that Outer end 25, the upper corner 35 (see Fig. 5) of the Pressure bar 10 happens.
  • FIG. 4 shows the pressing device 9 and the tensioning rail 11 in their activated state, around the front and rear edge the plate 6 to be clamped on the plate cylinder fasten.
  • the plate cylinder 1 is stopped and the pressure bar 10 activated, for. B.
  • the Clamping rail 11 is by means of the balancing mass 13th acting coil springs 17 in the open channel 24 of the Plate cylinder withdrawn. While the Retracts the tensioning rail 11 into the plate cylinder channel, presses the pressure bar 10 against the Plate trailing edge 8 to ensure smooth clamping of the Plate to the peripheral surface of the plate cylinder 1 guarantee.
  • Fig. 5 shows the pressing device 9 in detail in its deactivated, closed position.
  • the embodiment is the pressure bar 10 in one Recess 31 of a housing 26 added.
  • the housing 26 further comprises a spring-loaded clamping plate 30 the clamping plate 30 is a protective device - z. B. in Form of a protective sleeve 27 made of any flexible, elastic or rigid material can, tightly attached to the pressure device and this thus enveloped.
  • the housing 26 includes a bore 33 for Supply of fluid pressure (e.g. hydraulic or pneumatic pressure) to move a piston 28.
  • a seal 32 e.g. B. an O-ring or the like. Mistake.
  • the left contacts End of the piston 28, the pressure bar 10, and the right end of the piston 28 is located opposite a pressure chamber 34 (see Fig. 6).
  • the piston 28 is in an activated position shown. Through the bore 33 fluid pressure Chamber 34 directed. Thus, the piston 28 moves laterally, whereby the pressure bar 10 emerges from the recess 31 moved and contacted the plate trailing edge 8. In the lateral movement of the piston 28 and the pressure bar 10 the protective sleeve 27 also moves. The protective sleeve 27 causes the spring 29 of the spring-loaded Clamping plate 30 contracts and the clamping plate 30 is moved accordingly in the lateral direction. Consequently the protective sleeve 26 remains during the movement of the Pressure bar 10 wrapped tightly around the outside of the housing 26. The protective sleeve 27 keeps all contaminants away between the pressure bar 10 and the housing 26 of the Pressure bar could come.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Claims (20)

  1. Dispositif pour tendre une plaque d'impression sur un cylindre (1) de groupe d'impression qui comporte une cavité (24) dans la zone de fixation, comprenant une barre de fixation (11) qui est montée mobile dans la cavité (24) du cylindre (1) de groupe d'impression et qui comporte un élément de retenue (14) pour encastrer au moins un bord (7, 8) de la plaque d'impression (6), un dispositif presseur (9) qui est associé au cylindre (1) de groupe d'impression comprenant une barre presseuse qui recouvre sensiblement la zone de fixation que comporte le cylindre (1) de groupe d'impression.
       caractérisé
       en ce que le dispositif presseur (9) comprend une barre presseuse (10) mobile dans une cage (26) et le dispositif presseur (9) est entouré d'une gaine de protection (27) qui l'enveloppe et qui est destinée à former une protection contre les impuretés lors de la mise en service et hors service de la barre presseuse (10).
  2. Dispositif selon la revendication 1,
       caractérisé
       en ce que le dispositif presseur (9) contraint simultanément le bord antérieur (7) et le bord arrière (8) d'une plaque d'impression (6) à se placer dans la barre de fixation (11) que comporte le cylindre porte-plaque (1).
  3. Dispositif selon la revendication 1,
       caractérisé
       en ce que la barre de fixation (11) peut être mise en retrait dans la cavité (24) du cylindre porte-plaque (1) et en ce que la barre de fixation (11) présente par ailleurs une surface (16) avec laquelle la barre presseuse (10) entre en contact pendant la mise en retrait de la barre de fixation (11) dans le cylindre porte-plaque (1).
  4. Dispositif selon la revendication 1,
       caractérisé
       en ce que la gaine de protection (27) est réalisée en une matière élastique.
  5. Dispositif selon la revendication 1,
       caractérisé
       en ce que la gaine de protection (27) est réalisée en une matière caoutchouteuse.
  6. Dispositif selon la revendication 1,
       caractérisé
       en ce que la gaine de protection (27) est réalisée en polyester ou en polyuréthanne.
  7. Dispositif selon la revendication 1,
       caractérisé
       en ce que la gaine de protection (27) est réalisée en une toile élastique.
  8. Dispositif selon la revendication 1, qui comprend par ailleurs :
    une plaque tendeuse (30) soumise à la force d'un ressort afin d'imposer une traction à la gaine de protection (27).
  9. Dispositif selon la revendication 1,
       caractérisé
       en ce que la barre presseuse (10) est montée mobile dans un chambrage (31) de la cage (26).
  10. Dispositif selon la revendication 1,
       caractérisé
       en ce que le dispositif presseur (9) comprend une cage (26) comportant une chambre de compression (34).
  11. Dispositif selon la revendication 10,
       caractérisé
       en ce que la chambre de compression (34) loge un piston (28) monté mobile.
  12. Dispositif selon la revendication 10,
       caractérisé
       en ce que la cage (26) comprend un chambrage (31) dans lequel le piston (28) déplace la barre presseuse (10).
  13. Dispositif selon la revendication 10,
       caractérisé
       en ce que la chambre de compression (34) exerce une pression hydraulique sur la barre presseuse (10).
  14. Dispositif selon la revendication 10,
       caractérisé
       en ce que la chambre de compression (34) exerce une pression pneumatique sur la barre presseuse (10).
  15. Dispositif pour tendre une plaque d'impression sur un cylindre (1) de groupe d'impression, qui comporte dans la zone de fixation une cavité (24) de logement d'un bord antérieur (7) et d'un bord arrière (8) de la plaque d'impression (6), comprenant une barre de fixation (11) qui est montée mobile dans la cavité (24) du cylindre (1) de groupe d'impression et qui est destinée à l'encastrement du bord antérieur et du bord arrière de la plaque d'impression (6), ainsi qu'un dispositif presseur (9),
       caractérisé
       en ce que le dispositif presseur (9) est équipé d'une gaine de protection (27), qui l'enveloppe et qui est destinée à assurer une protection contre les impuretés, et il comprend une barre presseuse mobile (10) destinée à entrer simultanément en contact avec le bord antérieur (7) et avec le bord arrière (8) de la plaque d'impression (6) pendant l'encastrement du bord arrière (8) de la plaque d'impression dans la cavité (24).
  16. Dispositif selon la revendication 15,
       caractérisé
       en ce que le dispositif presseur (9) comprend par ailleurs :
    une cage (26) dans laquelle un piston (28) est monté mobile pour la mise en contact de la barre presseuse (10), le piston (28) mis en service extrayant la barre presseuse (10) de la cage (26) ; et la gaine de protection (27) enveloppe le dispositif presseur (9) lors de la mise hors service et en service du piston (28).
  17. Dispositif selon la revendication 16, qui comprend par ailleurs une plaque tendeuse (30) soumise à la force d'un ressort afin d'imposer une traction à la gaine de protection (27).
  18. Dispositif selon la revendication 17,
       caractérisé
       en ce que la gaine de protection (27) est réalisée en une matière élastique.
  19. Procédé pour tendre une plaque d'impression sur un cylindre de groupe d'impression, comprenant les étapes suivantes du procédé :
    l'insertion du bord antérieur (7) d'une plaque d'impression (6) dans une zone de fixation formée d'une cavité (24) située dans un cylindre (1) de groupe d'impression.
    l'encastrement du bord antérieur (7) de la plaque d'impression (6) dans une barre de fixation (11) qui est montée mobile dans la cavité (24) du cylindre (1) de groupe d'impression.
    la rotation du cylindre (1) de groupe d'impression afin de mettre en totalité la plaque d'impression (6) sur sa circonférence jusqu'à ce que les bords (7, 8) de la plaque d'impression (6) soient situés en face d'un dispositif presseur (9).
    la poussée en premier du bord arrière (8) de la plaque d'impression (6) dans la barre de fixation (11) par extraction d'une plaque presseuse (20) hors du dispositif presseur (9) entouré d'une gaine de protection (27) et
    la mise en contact commune, qui se produit lors de la poursuite de l'extraction de la barre presseuse (10), de la plaque presseuse (10) contre le bord antérieur (7) et le bord arrière (8) de la plaque d'impression (6), ladite barre presseuse (10) contraignant le bord antérieur et le bord arrière (7, 8) à se diriger vers la cavité (24).
  20. Procédé selon la revendication 19, comprenant l'autre étape suivante de procédé :
    le déplacement automatique de la barre de fixation (11) vers l'extérieur du cylindre (1) de groupe d'impression alors que celui-ci se trouve à la suite de l'étape d'encastrement du bord antérieur (7) de la plaque d'impression (6), mais avant l'étape de la poussée en premier du bord arrière (8) vers l'intérieur,
EP96105769A 1995-04-26 1996-04-12 Procédé et dispositif pour fixer un cliché sur un cylindre Expired - Lifetime EP0739728B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42949195A 1995-04-26 1995-04-26
US429491 1995-04-26

Publications (3)

Publication Number Publication Date
EP0739728A2 EP0739728A2 (fr) 1996-10-30
EP0739728A3 EP0739728A3 (fr) 1997-04-16
EP0739728B1 true EP0739728B1 (fr) 1999-02-10

Family

ID=23703475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105769A Expired - Lifetime EP0739728B1 (fr) 1995-04-26 1996-04-12 Procédé et dispositif pour fixer un cliché sur un cylindre

Country Status (5)

Country Link
US (1) US5718175A (fr)
EP (1) EP0739728B1 (fr)
JP (1) JP3030602U (fr)
AT (1) ATE176627T1 (fr)
DE (2) DE59601285D1 (fr)

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Publication number Priority date Publication date Assignee Title
US6113346A (en) 1996-07-31 2000-09-05 Agfa Corporation Method for loading and unloading a supply of plates in an automated plate handler
DE19820159A1 (de) * 1997-08-07 1999-02-11 Heidelberger Druckmasch Ag Stellvorrichtung für eine Druckmaschine
US6397751B1 (en) * 2000-11-16 2002-06-04 Heidelberger Druckmaschinen Ag Method of extracting a printing plate from a plate cylinder of a printing unit
JP4740314B2 (ja) * 2005-03-30 2011-08-03 ゴス インターナショナル アメリカス インコーポレイテッド 枢着されたタッカを備えるウェブオフセット印刷機
DE102005017182A1 (de) 2005-04-13 2006-10-19 Man Roland Druckmaschinen Ag Vorrichtung und Verfahren zum Andrücken einer Bespannung an einen Druckwerkzylinder einer Rotationsdruckmaschine
US20070256582A1 (en) * 2006-05-02 2007-11-08 Komori Corporation Processing device
US20080282917A1 (en) * 2007-05-15 2008-11-20 Goss International Americas, Inc. Cylinder with reduced inertia variation and method
GB2457901A (en) * 2008-02-27 2009-09-02 Goss Graphic Systems Ltd Method of inserting printing plate into lock-up slots in plate cylinder

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DE2754080C3 (de) * 1977-12-05 1982-01-07 Registersystem für die Drucktechnik GmbH, 8000 München Vorrichtung zum registerhaltigen Spannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen
US4577560A (en) * 1984-08-20 1986-03-25 R. R. Donnelley & Sons Company Gapless lock-up for offset printing cylinders
DE3919281C1 (fr) * 1989-06-13 1991-01-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
EP0431715B2 (fr) * 1989-12-06 2000-07-12 Komori Corporation Appareil de remplacement de plaques pour presse d'impression
JP3030573B2 (ja) * 1991-05-30 2000-04-10 株式会社小森コーポレーション 版胴への刷版装着装置
DE4218602C2 (de) * 1991-08-28 1993-11-11 Heidelberger Druckmasch Ag Vorrichtung zum Einführen der Druckplattenhinterkante an einem Plattenzylinder
JP2571056Y2 (ja) * 1992-01-08 1998-05-13 株式会社小森コーポレーション 印刷機の刷版交換装置
JP3194199B2 (ja) * 1992-01-17 2001-07-30 株式会社小森コーポレーション 版胴への刷版装着装置
DE4213472C2 (de) * 1992-04-24 1994-05-26 Heidelberger Druckmasch Ag Vorrichtung zum Fördern flexibler Druckformen
DE4214049A1 (de) * 1992-04-29 1993-11-04 Heidelberger Druckmasch Ag Vorrichtung zum zufuehren einer druckplatte zu einem plattenzylinder einer druckmaschine
JP3219908B2 (ja) * 1992-07-09 2001-10-15 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 枚葉紙オフセット印刷機
DE4227683C2 (de) * 1992-07-09 1994-04-21 Heidelberger Druckmasch Ag Maschine zum Bogen-Offsetdruck, die für den automatisierten Druckplattenwechsel ausgerüstet ist
US5335046A (en) * 1993-02-22 1994-08-02 Intergraph Corporation Clamping mechanism for use on a rotatable plotter drum
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DE4338664C2 (de) * 1993-11-12 1995-09-14 Roland Man Druckmasch Verfahren und Vorrichtung zum Steuern eines automatisierten Druckplattenwechselvorganges bei Druckmaschinen
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DE4440239C5 (de) * 1994-11-10 2007-11-22 Man Roland Druckmaschinen Ag Wälzelement zum Andrücken einer flexiblen Druckplatte an den Formzylinder

Also Published As

Publication number Publication date
ATE176627T1 (de) 1999-02-15
DE19614465A1 (de) 1996-11-14
EP0739728A2 (fr) 1996-10-30
EP0739728A3 (fr) 1997-04-16
US5718175A (en) 1998-02-17
DE59601285D1 (de) 1999-03-25
JP3030602U (ja) 1996-11-01

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