EP0667237B1 - Vorrichtung zum automatischen Wechseln von Druckplatten - Google Patents

Vorrichtung zum automatischen Wechseln von Druckplatten Download PDF

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Publication number
EP0667237B1
EP0667237B1 EP95100531A EP95100531A EP0667237B1 EP 0667237 B1 EP0667237 B1 EP 0667237B1 EP 95100531 A EP95100531 A EP 95100531A EP 95100531 A EP95100531 A EP 95100531A EP 0667237 B1 EP0667237 B1 EP 0667237B1
Authority
EP
European Patent Office
Prior art keywords
rollers
transport rollers
counter pressure
plate
printing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95100531A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0667237A1 (de
Inventor
Bernd Lindner
Nikola Pupic
Helmut Schild
Berthold Seib
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
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0667237A1 publication Critical patent/EP0667237A1/de
Application granted granted Critical
Publication of EP0667237B1 publication Critical patent/EP0667237B1/de
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

Definitions

  • the invention relates to a device for automatically changing printing plates of a printing press, in particular sheet-fed offset printing press, according to the preamble of claim 1.
  • a semi-automatic printing plate changing system in which an insertion rail which can be adjusted to the plate cylinder is provided, by means of which the printing start edge of a new printing plate is inserted into the corresponding tensioning rail of the plate cylinder.
  • the vertically movable protection in front of the printing unit cylinders has a gap at its upper end from which a pressure plate to be removed can be removed by an operator and via which - after the insertion rail has been inserted - a new pressure plate to be fed in is inserted into the start of the tensioning rail by the operator .
  • the device is clamped and tensioned on the plate cylinder by means of corresponding remote-controlled actuating means.
  • EP 0 431 575 A2 and DE 4 130 359 A1 magazines for the automatic printing plate change are known, in which linearly movable suction cups are provided for feeding a new printing plate to the plate cylinder.
  • EP 0 431 575 A2 provides register pins which can be countersunk in the magazine and to which the new printing plate to be fed is aligned.
  • a disadvantage of these known printing plate magazines is the relatively complex and therefore also to be regarded as prone to failure. In order for a new printing plate to be fed to the plate cylinder in register with these plate changing systems, it is therefore necessary that the printing plate be carefully and therefore time-consumingly aligned when it is inserted into the magazine. A further disadvantage is that these magazines block the space between the printing units in the position of the printing plate change and therefore expensive additional protection must be provided so that an operator is not injured by the corresponding switch-on and switch-off movements.
  • a printing plate magazine suspended in front of the printing unit which has a storage chamber for the old as well as for the new printing plate to be fed.
  • This magazine is curved in its lower part facing the plate cylinder, and in the lower part of this magazine driven transport rollers, counter pressure rollers and pivotable ejection fingers are provided for removing a used printing plate.
  • the described devices for changing or feeding the printing plates are all located in the lower area of the magazine and therefore in the vicinity of the plate cylinder. It is therefore not possible to hang this magazine movably on the printing unit via a vertical guide. Rather, it is provided to pivot the magazine from an operating position to a service position by means of parallel rockers.
  • the magazine also moves into the space between the printing units, which in turn protects an operator requires additional safeguards.
  • the new printing plate to be fed in must be precisely pre-positioned, since otherwise a correct supply to the plate cylinder cannot be guaranteed.
  • This device also provides a so-called position detector for the printing plate to check the register-correct system.
  • the object of the present invention is therefore to develop a device according to the preamble of claim 1 in a structurally simple manner in such a way that a register-correct supply of the printing plate to the plate cylinder is always guaranteed.
  • the printing plate Due to the axial mobility of the transport rollers, the printing plate is not automatically aligned in the magazine with respect to the side register of the plate cylinder.
  • the transport rollers are mounted in such a way that they act on the printing plate in approximately half the format length when the new printing plate is inserted into the tensioning rail assigned to the start of printing.
  • the conveying direction of the transport rollers is oriented at an angle with respect to the direction of insertion of the detection area of the pressure start tensioning rail.
  • the device according to the invention can be arranged in a very compact and space-saving manner above a protection which is known per se and can be moved vertically in front of the printing unit cylinder and can effect the feeding of a new printing plate via a guide device which is likewise known and can be adjusted to the plate cylinder.
  • the transport rollers according to the invention can then either be arranged in an integrated manner in the upper part of a protection or can be designed as a removable or pivotable attachment.
  • FIG. 1 and 2 show a part of a printing unit of a sheet-fed offset printing press with a plate cylinder 1, which carries a front tensioning rail 3 assigned to the start of printing DA in an axially parallel pit 2.
  • the front tensioning rail 3 has, in a manner known per se, a format-wide gap as a detection area 4 for the edge of a printing plate 11 to be newly fed which is assigned to the start of printing DA.
  • the remotely controllable actuating means (not shown here) can open the detection area 4 and also close it after clamping to insert a new pressure plate 11.
  • a blanket cylinder 5 is shown below the plate cylinder 1.
  • a vertically movable guard 6 is attached in front of the printing unit cylinders 1 and 5 shown in FIGS. 1 and 2.
  • the protection 6 is suspended on both sides via vertical guides (not shown here), each attached to a side frame wall.
  • a pair of axially spaced counter pressure rollers 13, 14 is attached (FIG. 6).
  • a pair of driven transport rollers 15 is pivotally suspended.
  • the pair of transport rollers 15 can thus be placed either on the pair of counter pressure rollers 14 or on the pair of counter pressure rollers 13, as shown in FIGS. 1-4.
  • the drive of the transport rollers 15 is such that the transport rollers 15 rotate counterclockwise.
  • a pressure plate 11 to be newly supplied is placed through the gap between the pairs of counter-pressure rollers 13 and the transport rollers 15 and through the gap formed by the guide plates 8 and 9 into the protection 6 on the stops 7.
  • a used printing plate was removed after loosening a holding device (not shown here) corresponding to the printing end by turning the plate cylinder 1 backwards (contrary to the normal direction of rotation shown here) through the gap of the guide plates 9 and 10 from the top of the guard 6 promoted.
  • the plate cylinder 1 is rotated back until it assumes the position shown in FIG. 1, which also serves to insert a new printing plate.
  • the transport rollers 15 are then brought up against the counter-pressure rollers 14 and the pressure plate 12 is pulled out of the opened detection area 4 of the tensioning rail 3 by the rotation of the transport rollers 15.
  • an insertion rail 18 which can be pivoted about an axis (not shown) is arranged in front of the plate cylinder 1 and is in the basic position in FIG. 1.
  • This insertion rail 18 has 7 recesses in the area of the stops, so that the pivotable end of the insertion rail 18 is not hindered by the stops 7 and can reach under the front edge of the pressure plate 11.
  • the pressure plate 11 is bent in its lower region towards the plate cylinder 1 by the pivoting of the insertion rail 18 after the transport rollers 15 have been placed against the counter pressure rollers 13.
  • the flexible guide tongues 16 also yield.
  • the transport rollers 15 are actuated again, so that the front edge of the pressure plate 11 is inserted into the opened tensioning rail 3 (the detection area 4), whereupon the pressure plate is clamped.
  • the insertion rail 18 is pivoted back into its basic position (FIG. 1) and the clamped pressure plate 11 is drawn up by rotating the plate cylinder 1 (direction of arrow) around its outer circumference, whereupon the clamping and tensioning of the printing end of the pressure plate 11 takes place by means not shown here.
  • the attachment of the counter-pressure rollers 13, 14 and the transport rollers 15 pivotally driven between them is shown above the protection 6.
  • the pair of transport rollers 15 is mounted on a common drive shaft 21 which has a drive 28 at one end.
  • the drive shaft 21 is supported at both ends via bearings on the pivotable end of a pivot lever 24.
  • Spherical roller bearings are preferably used here, so that bending of the drive shaft 21 is also possible.
  • the two pivot levers 24 are in turn attached to the ends of a common pivot shaft 23 and connected to it in a rotationally fixed manner.
  • Fig. 5 it is shown that the common pivot shaft 23 is suspended in each case on a frame part 22 attached above the protection 6 via bearings.
  • the frame parts 22 have a U-shaped shape in plan view and each consist of two opposite walls in which the counter-rollers 13, 14 are mounted and a support arm connecting the two walls.
  • the drive shaft 21, which can be pivoted by the pivot axis 23 via the pivot lever 24, is passed through an opening 25 in the support arm of the frame part 22, so that the transport rollers 15 can be set against the counter pressure rollers 13, 14 mounted in the walls of the frame part 22.
  • the transport roller 15 can therefore be turned on the counter-pressure rollers 13 by pivoting the swivel shaft 23 either against the counter-pressure rollers 14 for conveying out a used pressure plate 12 or for feeding a new pressure plate 11. It is further provided that the transport rollers 15 can also be pivoted into a central position, not shown, in which they therefore do not rest against the counter-pressure rollers 13 or against the counter-pressure rollers 14.
  • the mounting of the pivot shaft 23 within the two frame parts 22 is designed such that not only a smooth pivoting movement but also, as indicated by the arrow in FIGS. 5 and 6, axial mobility of the pivot shaft 23 with respect to the frame parts 22 is possible.
  • the pivot shaft 23 is preferably mounted in the support arm of the frame part 22 via a needle bearing, which is seated in a spherical roller bearing.
  • a pivot drive 27 is attached to the side of the guard 6 opposite the drive 28, and this is coupled to the pivot shaft 23 in such a way that the axial mobility of the illustrated unit pivot shaft 23, pivot lever 22 and drive shaft 21 is not impeded .
  • the swivel drive 27 can advantageously be a rotary vane motor that can be operated with compressed air or pneumatic cylinders arranged in pairs.
  • the drive 28 is advantageously designed as an electric motor.
  • the drive 28 can also act via a freewheel on the drive shaft 21, so that a used pressure plate 12 can be pulled out of the guard 6 when the transport rollers 15 are in contact with the counter-pressure rollers 14 (FIGS. 1 and 3). Not shown are holding means for the used printing plate 12, so that it is held in the protection 6 (FIG. 1) even when the transport rollers 15 are parked by the counter pressure rollers 13.
  • each counter-pressure roller 13 is centered via two springs 31 which are supported at the other end in the frame part 22.
  • the counter-pressure rollers 13 have a barrel-shaped profile.
  • the transport rollers 15 also have such a spherical outer contour, and the counter-pressure rollers 14 can also be shaped in this way.
  • the axis 20 in the frame part 22 can be adjusted with regard to its orientation to the drive shaft 21. This can be achieved in that the axle 20 is inserted at one or both ends with a corresponding fit via eccentric bushings in the wall of the frame part 22 (not shown in FIG. 9). Through a skewed orientation of the counter pressure rollers 13 with respect to the transport rollers 15, an advantageous spreading effect of the pressure plate 11 during conveying can be achieved.
  • the axial distance between the transport rollers 15 on the drive shaft 21 is the same as the distance between the punched-outs which are provided on the front edge of the pressure plate 11 and which are provided with register pins 29 arranged on the plate cylinder 1 (in the detection area of the tensioning rail 3). work together.
  • the driving force of a new pressure plate 11 to be fed is thus introduced in the circumferential direction just above the punched-out portions 30.
  • the transport rollers 15 introduce the driving force approximately half the format length of the printing plate 11 and further that the printing plate 11 experiences a conveying direction F through the transport rollers 15, which is at an angle W to the insertion direction E of the plate leading edge extends into the open detection area 4 of the tensioning rail 4.
  • the angle W is therefore formed by the conveying direction F and the orientation of the detection area 4, which is exaggerated in FIG. 8.
  • this results in an automatic correction and thus a registration-correct application of a new printing plate 11 when it is applied to the register pins 29 with the punchings 30. This is shown in principle in FIGS. 7 and 8.
  • a slightly rotated with respect to the registered position oriented printing plate 11 is shown in dashed lines. If this pressure plate 11 (dashed line) with its punched-out 30 is conveyed to the register pins 29 of the plate cylinder 1, the punched-out 30 shown on the left in FIG. 7 first reaches the register pin 29.
  • a possible lateral offset of the pressure plate 11 is indicated by the axial mobility of the transport rollers 15 and the corresponding counter-pressure rollers 13 compensated. Since the pressure plate, as shown in FIG. 8, runs curved between the transport rollers 15 and the counter-pressure rollers 13 and the register pins 29, the pressure plate is bent a little more strongly in the region of the edge a (FIG.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Screen Printers (AREA)
  • Manufacturing Of Printed Wiring (AREA)
EP95100531A 1994-02-12 1995-01-17 Vorrichtung zum automatischen Wechseln von Druckplatten Expired - Lifetime EP0667237B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4404558 1994-02-12
DE4404558A DE4404558C2 (de) 1994-02-12 1994-02-12 Vorrichtung zum automatischen Wechseln von Druckplatten

Publications (2)

Publication Number Publication Date
EP0667237A1 EP0667237A1 (de) 1995-08-16
EP0667237B1 true EP0667237B1 (de) 1997-12-29

Family

ID=6510147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100531A Expired - Lifetime EP0667237B1 (de) 1994-02-12 1995-01-17 Vorrichtung zum automatischen Wechseln von Druckplatten

Country Status (4)

Country Link
EP (1) EP0667237B1 (ja)
JP (1) JP2793142B2 (ja)
AT (1) ATE161475T1 (ja)
DE (2) DE4404558C2 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363857B2 (en) 2001-05-11 2008-04-29 Dainippon Screen Mfg. Co., Ltd. Cylindrical outer surface scanning apparatus
DE102008051581A1 (de) 2007-11-08 2009-05-14 Heidelberger Druckmaschinen Ag Vorrichtung zum Abziehen einer Druckplatte vom Plattenzylinder einer Druckmaschine
DE102008056422A1 (de) 2007-12-07 2009-06-10 Heidelberger Druckmaschinen Ag Vorrichtung zum Transport einer Druckplatte zu oder von einem Plattenzylinder einer Druckmaschine

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9411254U1 (de) * 1994-07-12 1994-10-13 Man Roland Druckmaschinen Ag, 63069 Offenbach Vorrichtung zur Kontrolle eines automatisierten Druckplattenwechsels
JP2691974B2 (ja) * 1994-11-16 1997-12-17 株式会社東京機械製作所 刷版支持装置及び刷版着脱装置
DE19531024B4 (de) * 1994-11-16 2005-01-27 Kabushiki Kaisha Tokyo Kikai Seisakusho Vorrichtung und Verfahren zum Anbringen einer Druckplatte auf einem Plattenzylinder einer Rotationsdruckpresse
DE19508846C2 (de) * 1995-03-11 2002-10-31 Koenig & Bauer Ag Vorrichtung zum Einführen einer Druckplattenvorderkante
DE19511686A1 (de) * 1995-03-30 1996-10-02 Heidelberger Druckmasch Ag Verfahren zum Wechseln von Druckplatten
DE19934271A1 (de) 1998-11-13 2000-05-25 Heidelberger Druckmasch Ag Verschwenkbare Druckformwechseleinrichtung
DE10008489B4 (de) * 1999-03-19 2006-08-24 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zur Zuführung einer Druckplatte
JP4410345B2 (ja) * 1999-09-17 2010-02-03 株式会社小森コーポレーション 版案内装置
DE10052774B4 (de) * 2000-10-25 2004-08-19 Koenig & Bauer Ag Vorrichtung zum Wechseln von Druckplatten auf einem Plattenzylinder einer Druckmaschine
DE10219778A1 (de) 2001-06-05 2002-12-12 Heidelberger Druckmasch Ag Vorrichtung zum automatischen Wechseln von Druckplatten einer Druckmaschine
JP4559015B2 (ja) 2002-04-08 2010-10-06 株式会社小森コーポレーション 版保持装置
JP4498028B2 (ja) * 2004-06-25 2010-07-07 リョービ株式会社 印刷機
JP4737759B2 (ja) * 2006-03-27 2011-08-03 三菱重工印刷紙工機械株式会社 オフセット輪転印刷機の刷版位置決め方法及び装置
DE102007015595B3 (de) * 2007-03-29 2008-04-10 Man Roland Druckmaschinen Ag Vorrichtung zum Druckplattenwechsel an einer Verarbeitungsmaschine
DE102007018936A1 (de) 2007-04-21 2008-10-23 Manroland Ag Vorrichtung zum Druckplattenwechsel an einer Verarbeitungsmaschine
DE102007029681B3 (de) * 2007-06-27 2008-10-23 Manroland Ag Druckwerk für eine Verarbeitungsmaschine
DE102007036092A1 (de) 2007-08-01 2009-02-05 Manroland Ag Vorrichtung zum Druckplattenwechsel an einer Verarbeitungsmaschine
DE102007049453A1 (de) 2007-10-16 2009-04-30 Manroland Ag Verfahren und Vorrichtung zum Druckplattenwechsel an einer Verarbeitungsmaschine
DE102008049474A1 (de) 2007-10-18 2009-04-23 Heidelberger Druckmaschinen Ag Vorrichtung zum Zuführen von Druckplatten zu einem Plattenzylinder einer Druckmaschine
DE102008048281A1 (de) 2007-10-18 2009-04-23 Heidelberger Druckmaschinen Ag Vorrichtung zum Abführen einer Druckplatte von einem Plattenzylinder einer Druckmaschine
DE102009012147A1 (de) 2008-03-27 2009-10-01 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum Zuführen von Druckplatten zu einem Plattenzylinder einer Verarbeitungsmaschine
DE102008039486A1 (de) * 2008-08-23 2010-02-25 Manroland Ag Verfahren zum Betreiben einer Druckmaschine
DE102009052093A1 (de) * 2008-12-02 2010-06-17 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum automatischen Zuführen von Druckplatten
DE202014101475U1 (de) 2014-03-28 2014-06-06 manroland sheetfed GmbH Vorrichtung zum Reinigen automatischer Plattenwechseleinrichtungen
DE202016101636U1 (de) 2016-03-24 2016-05-31 manroland sheetfed GmbH Haltemittel einer Vorrichtung zum Reinigen von automatischen Plattenwechseleinrichtungen
DE102020209465B3 (de) * 2020-07-28 2021-07-15 Heidelberger Druckmaschinen Aktiengesellschaft Druckplatten-Greifsystem

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69022822T2 (de) * 1989-12-06 1996-05-23 Komori Printing Mach Platteneinbringungseinrichtung für Druckpressen.
DE3940796A1 (de) * 1989-12-09 1991-06-13 Koenig & Bauer Ag Verfahren und einrichtung zum automatischen wechseln einer druckplatte
DE4130359C2 (de) * 1991-09-12 1997-04-17 Heidelberger Druckmasch Ag Vorrichtung zum Ab- und/oder Zuführen von Druckplatten einer Druckmaschine
DE4215969C2 (de) * 1992-05-18 1994-10-13 Roland Man Druckmasch Vorrichtung zum Zuführen von Druckplatten auf den Plattenzylinder von Druckmaschinen, insbesondere Bogenoffsetdruckmaschinen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363857B2 (en) 2001-05-11 2008-04-29 Dainippon Screen Mfg. Co., Ltd. Cylindrical outer surface scanning apparatus
DE102008051581A1 (de) 2007-11-08 2009-05-14 Heidelberger Druckmaschinen Ag Vorrichtung zum Abziehen einer Druckplatte vom Plattenzylinder einer Druckmaschine
DE102008051581B4 (de) 2007-11-08 2023-11-16 Heidelberger Druckmaschinen Intellectual Property Ag & Co. Kg Vorrichtung zum Abziehen einer Druckplatte vom Plattenzylinder einer Druckmaschine
DE102008056422A1 (de) 2007-12-07 2009-06-10 Heidelberger Druckmaschinen Ag Vorrichtung zum Transport einer Druckplatte zu oder von einem Plattenzylinder einer Druckmaschine

Also Published As

Publication number Publication date
DE4404558C2 (de) 1996-02-01
EP0667237A1 (de) 1995-08-16
DE4404558A1 (de) 1995-08-17
DE59501135D1 (de) 1998-02-05
JP2793142B2 (ja) 1998-09-03
ATE161475T1 (de) 1998-01-15
JPH07241979A (ja) 1995-09-19

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