EP0570702B1 - Dispositif pour alimenter des plaques d'impression vers le cylindre porte-plaque d'une machine à imprimer, en particulier machine à imprimer offset des feuilles - Google Patents

Dispositif pour alimenter des plaques d'impression vers le cylindre porte-plaque d'une machine à imprimer, en particulier machine à imprimer offset des feuilles Download PDF

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Publication number
EP0570702B1
EP0570702B1 EP93106206A EP93106206A EP0570702B1 EP 0570702 B1 EP0570702 B1 EP 0570702B1 EP 93106206 A EP93106206 A EP 93106206A EP 93106206 A EP93106206 A EP 93106206A EP 0570702 B1 EP0570702 B1 EP 0570702B1
Authority
EP
European Patent Office
Prior art keywords
printing
plate cylinder
rail
plate
cylinder
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
EP93106206A
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German (de)
English (en)
Other versions
EP0570702A1 (fr
EP0570702B2 (fr
Inventor
Berthold Seib
Georg Hartung
Helmut Schild
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
MAN Roland Druckmaschinen AG
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Filing date
Publication date
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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0570702A1 publication Critical patent/EP0570702A1/fr
Publication of EP0570702B1 publication Critical patent/EP0570702B1/fr
Application granted granted Critical
Publication of EP0570702B2 publication Critical patent/EP0570702B2/fr
Anticipated expiration legal-status Critical
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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

Definitions

  • the invention relates to a device for feeding printing plates to the plate cylinder of printing machines according to the preamble of claim 1.
  • a printing plate is attached to the plate cylinder by means of tensioning rails arranged in a cylinder channel and assigned to the printing start and the printing end, whereby the printing start area of the printing plate is first inserted (clamped) into the detection area of a correspondingly designed tensioning rail and then the printing end in the corresponding second tensioning rail also clamped and then tensioned using force.
  • tensioning rails arranged in a cylinder channel and assigned to the printing start and the printing end, whereby the printing start area of the printing plate is first inserted (clamped) into the detection area of a correspondingly designed tensioning rail and then the printing end in the corresponding second tensioning rail also clamped and then tensioned using force.
  • the introduction of the printing start area of the printing plate into the corresponding printing start tensioning rail is very laborious and time-consuming, since the corresponding edge of the printing plate has to be inserted over the entire width into a sometimes very narrow slot in the detection area. A brightness of the printing start edge of the printing plate exacerbates this fact.
  • the pressure plate must also be held or supported during the pulling-up process of the printing plate, i.e. when the plate cylinder runs slowly forward and when removing an old printing plate (backwards running of the plate cylinder), so that the printing side does not rest on any machine parts and may be damaged.
  • DE 3 940 795 C2 From DE 3 940 795 C2, DE 3 940 796 C2 and EP 0 431 575 A2 systems for automatic printing plate change are known, in which the removal of an old printing plate and the feeding of a new printing plate from or to the plate cylinder takes place automatically. In addition to storage and receiving areas for the printing plates, these systems also have transport devices for feeding and removing the printing plates. However, these systems are very extensive in terms of structural engineering and are therefore very cost-intensive.
  • the object of the present invention is therefore to expand a device according to the preamble of claim 1 in such a way that the insertion of the pressure plate leading edge into the corresponding pressure start tensioning rail can be simplified with the least constructional effort.
  • the plate cylinder of the printing press is associated with an insertion rail which is mounted on and off the outer circumference and extends over the format width of the plate cylinder.
  • the plate cylinder is moved into a position in which the insertion rail according to the invention can be adjusted to the area of the fold at the beginning of the printing of the plate cylinder and thus forms a funnel-shaped area with a surface that extends over its entire length and with the corresponding outer circumference of the plate cylinder the detection area of the open pressure start clamping rail of the plate cylinder opens.
  • the newly to be fed printing plate thus only needs to be inserted into this insertion area and is virtually automatically inserted into the open pressure start clamping rail through the surface of the insertion rail on the one hand and the outer circumference of the plate cylinder on the other hand.
  • the pressure start clamping rail can then be actuated by appropriate motors, for example located in the cylinder pit, i.e. the detection area can be closed for clamping.
  • the insertion rail is arranged pivotably about an axis which is located on the protection from the printing unit cylinders and in particular at the level of the plate cylinder of this printing unit.
  • the insertion rail is advantageously formed as the lower, pivotable end of a sheet profile which is approximately arched in profile and also extends over the format width of the plate cylinder, the pivot axis of which is located on the protection from the printing unit cylinder.
  • brushes can be arranged for gentle guidance of the printing plate, by means of which the printing plate is supported with its printing side on the sheet profile.
  • the pivoting of the insertion rail or the sheet metal profile can be effected, for example, by two pneumatic cylinders, which are preferably located on each side frame wall of the printing press and whose piston rods act on, for example, lever arms mounted on the frame for pivoting on the sheet metal profile.
  • Fig. 1 shows a section of the part of a printing unit of a printing press in series. Between the two side frame walls of this printing unit, a plate cylinder 1 is mounted, which has a tensioning rail 3, 4 assigned to the beginning of the printing DA and the end of the printing DE in a cylinder pit 2. Above the plate cylinder 1 are the rollers of an inking unit, of which two inking rollers are indicated in FIG. 1. As is known, these are switched off before changing the printing plates.
  • a protection 6 is slidably arranged over a guide rail attached to a side frame wall of the printing unit, which is in a basic position according to FIG. 1 during printing operation.
  • a protection 6 For access to the printing unit cylinders, especially to change the rubber blanket, can be pushed up, as indicated by the arrow.
  • the protection 6 extends across the width of the printing unit.
  • a pivot axis 7, on which a sheet metal profile 8 is suspended, is preferably attached to an upper part of the protection 6 as a swivel joint.
  • the sheet profile 8 has a slight curvature and has the format width of the plate cylinder 1.
  • an insertion rail 9 is attached, which can be pivoted to or from the outer circumference of the plate cylinder 1 by pivoting the sheet profile 8 (Arrow). In the embodiment shown in FIG. 1, the insertion rail 9 has been created by appropriate profiling of the pivotable end of the sheet metal profile 8.
  • a guide plate 11 is attached to the upper crossmember 10 of the protection 6 and is drawn down almost to the upper edge of the plate profile 8, that is to say approximately to the height of the pivot axis 7.
  • a guide plate 12 is also attached to the guard 6, which has two bent legs.
  • the guide plates 11 and 12 extend across the width of the guard 6 or across the format width of the plate cylinder 1 and form a gap for the passage of a printing plate.
  • a side stop which is slidably mounted according to the format of the printing plate can also be provided here.
  • Fig. 2 shows the sheet profile 8 with the insertion rail 9 thereon in format width.
  • brushes 13 are arranged at a distance from one another in a plurality of strips, the bristles of which support the printing plate with its printing side.
  • Brushes 14 are also attached to the guide plate 11 of the crossmember 10 for gentle support of the pressure plate.
  • other devices can also be provided for scratch-free and wear-free support of the pressure plate.
  • the insertion rail 9 at the pivotable end of the sheet metal profile 8 has the profile shown in FIG. 1 and has an insertion surface 15 facing the plate cylinder 1, which lies approximately at the height of the bristles of the brushes 13.
  • the sheet profile 8 is pivoted to the plate cylinder 1, as shown in FIG. 1, for which purpose it is rotated beforehand into the corresponding position.
  • the insertion rail 9 has a stop 16 in its extension on both sides (FIG. 2) with which it is supported on both bearer rings or measuring rings of the plate cylinder 1.
  • the stops 16 are designed to space the insertion rail 9 in relation to the start of pressure DA of the plate cylinder 1 such that the insertion surface 15 lies at the same level as the open detection area 17 of the tensioning rail 3.
  • the stops 16 have, for example, polyamide blocks for gentle support on the bearer rings and can also be adjustable.
  • a new pressure plate to be fed can be inserted directly into the tensioning rail 3 at the top of the guard 6 between the guide plate 11 and the opposite guide plate 12 and supported by the brushes 13 on the plate profile 8.
  • the insertion surface 15 of the insertion rail 9, on the one hand, and the outer circumference of the plate cylinder 1 in the area of the printing start DA, on the other hand, represent a funnel which extends over the format width of the plate cylinder 1 and causes the front edge of the printing plate to directly enter the gap-shaped detection area 17 can be introduced.
  • the sheet metal profile 8 can be pivoted down again with the insertion rail 9.
  • the plate cylinder 1 is now set in a slow forward rotation by appropriate control of the main drive of the printing press, wherein the pressure plate extends around the outer circumference of the plate cylinder 1.
  • a pressure roller 18 is provided on and off the plate cylinder 1, by means of which the pressure plate is pressed against the outer circumference of the plate cylinder during the pulling-on process.
  • the pressure roller 18 extends over the entire width of the format and can be turned on and off, for example, by means of two bearing levers (one on each side frame wall of the printing press) and one pneumatic cylinder each. As is known from the prior art, such a pressure roller 18 is also able to insert the trailing end of the printing plate into a correspondingly designed tensioning rail 4 of the printing end. This is then closed via remote-controlled devices in the plate cylinder.
  • a pneumatic cylinder 19 is attached to both side frame walls of the printing press, which causes the corresponding pivoting of the sheet-metal profile 8 by means of an angle lever 20 which is fixed to the frame and an entraining pin (not shown) attached thereto .
  • the pneumatic cylinder 19 can also be mounted directly in the protection 6 and articulated directly on the sheet profile 8.
  • the device according to the invention is suitable not only for feeding a new printing plate to the plate cylinder 1 but also for removing a printing plate located on the plate cylinder 1. Since the sheet profile 8 with the insertion rail 9 in the rest position, that is to say in the non-pivoted state, assumes the position indicated by dashed lines in FIG. 1 (for example, by a stop), a pressure plate can turn over when the plate cylinder 1 rotates backwards, the tensioning rail 4 is opened and the pressure roller 18 is engaged the brushes 13 of the sheet profile 8 are supported in a supporting manner between the guide sheets 11 and 12 on the protection 6.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (9)

  1. Dispositif pour amener des plaques d'impression sur le cylindre porte-plaque de machines d'impression, en particulier des machines d'impression offset à feuilles, dans lequel le cylindre porte-plaque (1) comporte dans un canal de cylindre (2) un rail tendeur (3) associé au début d'impression (DA) et présentant pour la réception du bord avant de la plaque d'impression une zone de prise (17) à ouvrir, sous forme d'une fente s'étendant sur la largeur du format et débouchant dans une direction sensiblement tangentielle à la périphérie externe du cylindre porte-plaque (1), et une face d'introduction (15) dirigée vers le cylindre porte-plaque (1) et pouvant être réglée sur celui-ci étant prévue pour une nouvelle plaque d'impression, caractérisé en ce que la face d'introduction (15) est réalisée sous forme d'un rail d'introduction (9) s'étendant sur la largeur du format du cylindre porte-plaque (1) et pouvant être réglé sur la périphérie externe du cylindre porte-plaque (1) dans la zone du début d'impression (DA) de sorte que, par l'intermédiaire de la face d'introduction (15) du rail d'introduction (9), orientée vers le cylindre porte-plaque (1), le bord avant d'une plaque d'impression peut être introduit dans la zone de prise ouverte (17) du rail tendeur (3).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que le rail d'introduction (9) est monté de façon pivotante autour d'un axe de pivotement (7) s'étendant parallèlement à l'axe du cylindre porte-plaque (1).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que l'axe de pivotement (7) est agencé sur une protection (6) prévue devant les cylindres de l'unité d'impression et pouvant être déplacée en particulier par l'intermédiaire d'un guide linéaire agencé sur une paroi du bâti latéral de l'unité d'impression.
  4. Dispositif selon l'une des revendications 2 ou 3, caractérisé en ce que le rail d'introduction (9) est agencé à l'extrémité pivotante d'un profilé de tôle (8) s'étendant sur la largeur du format du cylindre porte-plaque (1) et accroché par une face sur l'axe de pivotement (7).
  5. Dispositif selon la revendication 4,
    caractérisé en ce que le profilé de tôle (8) présente dans la direction transversale à la largeur du format une courbure et est accroché à l'axe de pivotement (7) avec la face concave de cette courbure orientée vers le cylindre porte-plaque (1).
  6. Dispositif selon l'une des revendications 4 ou 5, caractérisé en ce que la face d'introduction (15) du rail d'introduction (9) est réalisée sous forme d'une zone profilée de l'extrémité pivotante de la tôle profilée (8).
  7. Dispositif selon l'une des revendications 4 à 6, caractérisé en ce que des brosses (13) sont agencées sur la face de la tôle profilée (8), orientée vers le cylindre porte-plaque (1), par l'intermédiaire desquelles brosses la plaque d'impression à amener peut prendre appui sur leur face de pression.
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que des butées (16) sont prévues aux deux extrémités du rail d'introduction (9), par l'intermédiaire desquelles le rail d'introduction (9) peut prendre appui sur les bagues du cylindre porte-plaque (1).
  9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le rail d'introduction (9) peut être réglé contre le cylindre porte-plaque (1) par l'intermédiaire à chaque fois d'un vérin pneumatique (19) agencé sur une paroi latérale de la machine d'impression.
EP93106206A 1992-05-18 1993-04-16 Dispositif pour alimenter des plaques d'impression vers le cylindre porte-plaque d'une machine à imprimer, en particulier machine à imprimer offset des feuilles Expired - Lifetime EP0570702B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4215969A DE4215969C2 (de) 1992-05-18 1992-05-18 Vorrichtung zum Zuführen von Druckplatten auf den Plattenzylinder von Druckmaschinen, insbesondere Bogenoffsetdruckmaschinen
DE4215969 1992-05-18

Publications (3)

Publication Number Publication Date
EP0570702A1 EP0570702A1 (fr) 1993-11-24
EP0570702B1 true EP0570702B1 (fr) 1996-03-13
EP0570702B2 EP0570702B2 (fr) 2001-12-19

Family

ID=6458887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93106206A Expired - Lifetime EP0570702B2 (fr) 1992-05-18 1993-04-16 Dispositif pour alimenter des plaques d'impression vers le cylindre porte-plaque d'une machine à imprimer, en particulier machine à imprimer offset des feuilles

Country Status (6)

Country Link
US (1) US5331892A (fr)
EP (1) EP0570702B2 (fr)
JP (1) JP2941598B2 (fr)
AT (1) ATE135298T1 (fr)
DE (2) DE4215969C2 (fr)
ES (1) ES2086150T5 (fr)

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DE4322027A1 (de) * 1993-07-02 1995-01-19 Zirkon Druckmaschinen Gmbh Vorrichtung zum automatischen Wechseln einer Druckplatte
DE4338664C2 (de) * 1993-11-12 1995-09-14 Roland Man Druckmasch Verfahren und Vorrichtung zum Steuern eines automatisierten Druckplattenwechselvorganges bei Druckmaschinen
DE4339344C1 (de) * 1993-11-18 1995-03-30 Roland Man Druckmasch Vorrichtung für das automatisierte Wechseln von Druckplatten einer Druckmaschine
US5709150A (en) * 1994-01-17 1998-01-20 Koenig & Bauer-Albert Aktiengesellschaft Device for assembling, dismantling and transporting easily bent, arc-shaped objects with folded suspension edges
US5709151A (en) * 1994-01-17 1998-01-20 Koenig & Bauer-Albert Aktiengesellschaft Device for mounting, dismounting and transporting curved objects that are easy to bend and have hanging up edges
DE4404558C2 (de) * 1994-02-12 1996-02-01 Roland Man Druckmasch Vorrichtung zum automatischen Wechseln von Druckplatten
FR2718675B1 (fr) 1994-04-18 1996-07-12 Heidelberg Harris Sa Dispositif d'échange de clichés de machines rotatives à imprimer.
DE9415751U1 (de) * 1994-09-29 1994-11-17 Roland Man Druckmasch Vorrichtung zum Zuführen einer Druckplatte zum Plattenzylinder einer Druckmaschine
DE4442574C2 (de) * 1994-11-30 1996-11-28 Koenig & Bauer Albert Ag Verfahren und Vorrichtung zur Bereitstellung einer Druckplatte
DE19505630A1 (de) * 1995-02-18 1996-08-22 Roland Man Druckmasch Vorrichtung zum Wechseln von Druckplatten
DE19508846C2 (de) * 1995-03-11 2002-10-31 Koenig & Bauer Ag Vorrichtung zum Einführen einer Druckplattenvorderkante
DE19511075A1 (de) * 1995-03-25 1996-09-26 Roland Man Druckmasch Verfahren und Vorrichtung zum Aufziehen flexibler Druckformen
FR2732268B1 (fr) * 1995-03-31 1997-06-20 Heidelberg Harris Sa Dispositif d'echange de plaques d'impression
US6113346A (en) 1996-07-31 2000-09-05 Agfa Corporation Method for loading and unloading a supply of plates in an automated plate handler
DE59802993D1 (de) * 1997-03-04 2002-03-21 Roland Man Druckmasch Offsetdruckmaschine für schnellen Produktionswechsel
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CZ297967B6 (cs) * 2000-08-25 2007-05-09 Heidelberger Druckmaschienen Ag Zarízení na prestavování minimálne jednoho prvku registru v tiskovém stroji a zpusob k provádení takového prestavování
DE10052773B4 (de) * 2000-10-25 2005-02-17 Koenig & Bauer Ag Vorrichtung zum Zuführen einer Druckplatte auf einen Plattenzylinder einer Druckmaschine
DE10158158A1 (de) * 2001-11-28 2003-06-18 Koenig & Bauer Ag Vorrichtung zum Aufziehen eines Aufzuges
DE50205480D1 (de) * 2001-11-28 2006-02-02 Koenig & Bauer Ag Verfahren zum Montieren eines Aufzugs auf einer Mantelfläche eines Zylinders einer Druckmaschine
US6900826B2 (en) * 2002-02-19 2005-05-31 Presstek, Inc. Multiple resolution helical imaging system and method
US6722280B2 (en) * 2002-08-09 2004-04-20 Agfa Corporation Method and system for simultaneous loading and unloading of substrates in platestter
US6941863B2 (en) 2003-11-21 2005-09-13 Shinohara Machinery Co., Ltd. Plate transfer apparatus
DE10354967B3 (de) * 2003-11-25 2005-05-19 Shinohara Machinery Co., Ltd. Plattentransfervorrichtung
US20080314274A1 (en) * 2007-06-19 2008-12-25 Cummings Calvin D Method and apparatus for unloading printing plates
DE202008015082U1 (de) 2008-11-13 2009-01-15 Manroland Ag Vorrichtung zum Wechsel und zur Aufnahme von Druckformen an Rotationsdruckmaschinen
DE102008043725A1 (de) 2008-11-13 2010-06-02 Manroland Ag Vorrichtung und Verfahren zum Wechsel und zur Aufnahme von Druckformen an Rotationsdruckmaschinen
CN101830105B (zh) * 2009-03-13 2014-04-09 海德堡印刷机械股份公司 用于供应印版的方法和装置
DE102021109488A1 (de) 2021-04-15 2022-10-20 Koenig & Bauer Ag Vorrichtung zum Zuführen von Druckplatten und Verfahren zum Durchführen eines Plattenwechsels
DE102021122827A1 (de) 2021-09-03 2023-03-09 Koenig & Bauer Ag Vorrichtung und Verfahren zum Zuführen von Druckplatten zu einem Plattenzylinder
DE102022109489A1 (de) 2022-04-20 2023-10-26 Koenig & Bauer Ag Bogenoffsetrotationsdruckmaschine in Aggregatbauweise

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Also Published As

Publication number Publication date
ES2086150T5 (es) 2002-05-01
US5331892A (en) 1994-07-26
ATE135298T1 (de) 1996-03-15
DE59301844D1 (de) 1996-04-18
ES2086150T3 (es) 1996-06-16
EP0570702A1 (fr) 1993-11-24
JPH0631901A (ja) 1994-02-08
JP2941598B2 (ja) 1999-08-25
DE4215969C2 (de) 1994-10-13
DE4215969A1 (de) 1993-12-02
EP0570702B2 (fr) 2001-12-19

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