EP0623467A1 - Device for changing printing plates automatically in offset sheet printing machines with several printing units - Google Patents

Device for changing printing plates automatically in offset sheet printing machines with several printing units Download PDF

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Publication number
EP0623467A1
EP0623467A1 EP94102374A EP94102374A EP0623467A1 EP 0623467 A1 EP0623467 A1 EP 0623467A1 EP 94102374 A EP94102374 A EP 94102374A EP 94102374 A EP94102374 A EP 94102374A EP 0623467 A1 EP0623467 A1 EP 0623467A1
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EP
European Patent Office
Prior art keywords
printing
plate
plate cylinder
plates
guide
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.)
Granted
Application number
EP94102374A
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German (de)
French (fr)
Other versions
EP0623467B1 (en
Inventor
Ingo Köbler
Georg Hartung
Christian Dr. Bräutigam
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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Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0623467A1 publication Critical patent/EP0623467A1/en
Application granted granted Critical
Publication of EP0623467B1 publication Critical patent/EP0623467B1/en
Anticipated expiration legal-status Critical
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    • 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 in sheet-fed offset printing machines according to the preamble of claim 1.
  • the old printing plate is generally first removed in a printing unit, which is done by opening a tensioning rail assigned to the printing end of the printing plate.
  • a tensioning rail assigned to the printing end of the printing plate When the plate cylinder rotates slowly backwards, this printing plate is then conveyed out of the printing unit. After opening the tensioning rail assigned to the start of printing, the printing plate can be removed completely from the printing unit.
  • a new printing plate is then pulled up by inserting the start of this printing plate into the corresponding printing start clamping rail, then moving the plate cylinder slowly in the forward direction of rotation and thus pulling the printing plate in and then inserting the printing end of the printing plate into the corresponding clamping rail.
  • a complete printing plate changing device is provided on each printing unit, which essentially consists of a storage chamber for providing or receiving one or more new or used printing plates, as well as a transport or conveying mechanism by means of which the printing plates move from the plate cylinder into the storage chamber or from the storage chamber can be promoted to the plate cylinder.
  • the storage chamber can hold several printing plates for a number of subsequent jobs, so that the printing press has to be prepared for a certain number of jobs.
  • the printing plate changing device can be pivoted and arranged on or off from the plate cylinder on the following tower of a printing unit.
  • the device for automatic printing plate change in accordance with the above-mentioned prior publications which is located on each printing unit, must be loaded with new printing plates by an operator, for example, during printing operation, or those in the Used printing plates located in the storage chamber must be removed by an operator.
  • a corresponding number of operations have to be carried out in the individual storage chambers of the printing plate changing devices assigned to the printing units.
  • a rescheduling with regard to the order allocation of the printing machine may result in a rather tedious re-sorting or replacement with the printing plates already inserted in the storage chamber.
  • the known printing plate changing systems it is provided that these are arranged on and off the plate cylinder or are otherwise pivoted away, but in the already quite narrow space between the printing units of a sheetfed offset press in medium format there is a sometimes considerable restriction in the freedom of movement of one Operator who has to carry out a blanket change, a change of the inking roller or other service work, for example.
  • the known devices only allow the printing plates to be changed fully automatically, and in the event of failure or damage to a printing plate changer on one or more printing units, the printing plates can be changed by hand, as is usual, if this is still possible.
  • a device for the automatic exchange of printing plates which a conveyor unit for Conveying the plate to a predetermined location at a printing station and a delivery unit for removing the plate from the conveyor unit and for feeding this printing plate to the plate cylinder.
  • This previously known device provides special printing plates with, in particular, special holding mechanisms in such a way that the plate holding means form elastic units with the printing plates which can be mounted thereon.
  • special plate holding means and printing plates cannot be used.
  • the present invention is therefore based on the object of developing a device in accordance with the preamble of claim 1 in such a way that the structural outlay can be reduced and nevertheless a fully automatic printing plate changing system is present which is also more versatile and can also be expanded.
  • a pivotally attached to the plate cylinder and detachable therefrom is arranged with which a printing plate located on the printing cylinder after loosening the clamping device associated with the printing end slowly backwards rotating printing cylinder can be conveyed out of the printing unit in a targeted manner, so that this end of the printing plate which has been conveyed out can be gripped by a transport device or holding devices located thereon which are described in more detail below and can be conveyed away from the printing unit after the clamping device on the plate cylinder assigned to the start of printing has been released .
  • the guide device provided according to the invention on each printing unit is such that one of the transport device along with the controllable holding devices on the same Printing unit provided new printing plate after appropriate positioning of the plate cylinder can be conveyed into the open clamping device assigned to the start of printing.
  • the controllable holding devices of the transport device then release the printing plate, which also hold the new printing plate at its printing end area, and the new printing plate is pulled onto it by slowly rotating the plate cylinder in the forward direction.
  • the pressure end of the pressure plate is inserted into the open rear tensioning device by means of a pressure roller that can be adjusted to the plate cylinder and then automatically tensioned. The process roughly described above is repeated for each printing unit until all plate cylinders are each supplied with a new printing plate.
  • a transport device associated with all printing units and in particular movable along this is provided with controllable holding devices, by means of which an old printing plate is conveyed out a little via the guide devices on a printing unit Area of their end of printing is detected and then can be removed entirely from the plate cylinder.
  • a second controllable holding device of a movable transport device By means of a second controllable holding device of a movable transport device, a new printing plate is immediately fed to the plate cylinder via the guide device.
  • a central supply station in the form of a printing plate container is approached by the transport device and the old printing plate is deposited there and the new printing units provided for the next printing unit are picked up with the second controllable holding device. Then the next printing unit is started and the process described is repeated.
  • the movable transport device is suspended on rollers on a guide rail mounted above the printing press, so that the transport device can be moved along with the controllable holding devices across all printing units to the aforementioned supply location.
  • the guide rail can either be attached to the ceiling of the printing room or between the feeder and delivery with additional supports on each printing unit.
  • the transport device has a total of two controllable holding devices, one holding device being provided for receiving an old printing plate conveyed out of the printing unit and the second holding device providing the new printing plate to be supplied.
  • the holding devices are designed as grippers and / or pneumatic suction devices and grip the pressure plate in particular at several points in the area of the respective printing end.
  • the holding devices are attached to the transport device via lifting devices, so that when the transport device is attached to a guide rail above the printing press, the printing plate can be lowered from a raised position and can be fed to the plate cylinder via the guide device.
  • the holding device for the old pressure plate to be discharged can be raised and lowered by means of a lifting device, so that after the holding device has been lowered, the pressure plate which has been almost completely removed can be gripped or sucked in and then raised.
  • the stroke to be realized is essentially based on the printing plate format, since the new printing plates to be fed in and the old printing plates to be discharged are conveyed across the printing units in accordance with the preferred exemplary embodiment of the invention.
  • the advantage of the invention is that on each printing unit there is only one structurally simple to implement guide device by means of which the printing plates can be conveyed to and from the plate cylinder. Every printing unit has thus via a semi-automatic printing plate changing device. Due to the low construction costs in the area of the printing unit, little installation space is required.
  • the storage location for the printing plates can be a printing plate container that provides an interface between, for example, a driverless transport system for the printing plates within the prepress stage and the inventive one described here Represents printing plate changing system.
  • the central storage location for the new and old printing plates to be provided can advantageously be a self-moving printing plate container, which is either operated by a person or transports printing plates without a driver.
  • An important advantage of the invention is that the printing press still has a convenient possibility of changing the printing plate even without a movable transport device. Since the plate cylinders on each printing unit have remote-controlled automatic devices for clamping and tensioning and also have the guide device provided according to the invention, the printing plates can also be changed manually and relatively quickly, in particular in the event of a defect in the movable transport device. Furthermore, this concept results in a constructional solution, according to which it is possible to first acquire a printing press which has the guide devices provided on each printing unit and that after some time, in particular if the corresponding need is determined, the movable transport device is additionally installed as a retrofit.
  • a sensor-scannable marking is attached to each printing plate in the area of the printing end (e.g. EAN code), which can be removed in encrypted form by order, printing ink, color sequence, ink supply presetting, etc., and by an appropriate sensor system is palpable on the controllable holding device.
  • FIG. 1 shows a printing press with the device according to the invention, consisting of the guide devices 21 attached to its printing unit and the transport device 27 located above and movable.
  • the guide device 21 is described with reference to FIG. 2.
  • Fig. 2 shows a part of a printing unit of a printing press in a row construction. Between the two side frame walls of this printing unit, a plate cylinder 1 is mounted, which in a cylinder pit 2 has a tensioning rail 3, 4 which is remotely operable for clamping / tensioning and which is assigned to the pressure start DA and the pressure end DE. Above the plate cylinder 1 are the rollers of an inking unit, two of which are indicated in FIG. 2.
  • each Side frame wall of the printing unit attached guide rail a protection 6 slidably arranged, which is shown in FIG. 2 in a basic position during printing.
  • 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 concave curvature and has the format width of the plate cylinder 1.
  • an insertion rail 9 is attached, which can be pivoted by pivoting the sheet profile 8 to the outer circumference of the plate cylinder 1 or swung away from it (Arrow). In the embodiment shown in FIG. 1, the insertion rail 9 is created by appropriate profiling of the pivotable end of the sheet 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 displaceably mounted in accordance with the format of the printing plate can also be provided here, by means of which a pressure plate which is to be newly introduced is introduced in the correct direction of the side register.
  • Brushes 13 are spaced apart from one another in a plurality of strips on the concave inner side of the curved sheet-metal profile 8, the bristles of which can be used to gently support the printing plate with its printing side.
  • Traverse 10 are also arranged for gentle support of the pressure plate brushes 14.
  • the brushes 13, 14 which are preferably used, other devices can also be provided for scratch-free or 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. 2 and has an insertion surface 15 facing the plate cylinder 1, which lies at the level of the bristles of the brushes 13.
  • the sheet profile 8 is pivoted onto the plate cylinder 1, as shown in FIG. 2, for which purpose it is rotated beforehand into the corresponding position.
  • the insertion rail 9 each has a stop with which it is supported on special support surfaces of the tensioning rail.
  • the corresponding surfaces on the tensioning rail are designed such that, in the event of a deviation from the desired position of the cylinder, the insertion surface 15 changes its position relative to the tensioning rail 3 only insignificantly.
  • the stops are designed to space the insertion rail 9 from the pressure start DA of the plate cylinder 1 such that the insertion surface 15 is at the same level as the open detection area 17 of the tensioning rail 3.
  • a pressure plate to be newly fed can now either by hand, or as will be described, via the controllable holding device on the top of the guard 6 between the guide plate 11 and the opposite guide plate and, supported by the brushes 13 on the plate profile 8, directly into the opened tensioning rail 3 will be introduced.
  • 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 start of printing DA on the other hand represent a funnel which extends over the format width of the plate cylinder 1 and which causes the front edge of the printing plate directly into the gap-shaped Detection area 17 of the Clamping rail 3 can be inserted.
  • the printing plate After inserting a leading edge of the printing plate into the front clamping rail 3, the printing plate is clamped by closing the detection area 17. Now the guide device 8, 9 consisting of 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, the printing plate being drawn around the outer circumference of the plate cylinder 1.
  • a pressure roller 18 is mounted on and off with respect to the plate cylinder 1, by means of which the pressure plate is pressed against the outer circumference of the plate cylinder 1 during the mounting 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 able to insert the trailing end of the printing plate into a correspondingly designed tensioning rail 4 of the printing end DE. This is then closed via remotely operated devices in the plate cylinder (terminals).
  • a pneumatic cylinder 19 is attached to each of the side frame walls of the printing press, and the corresponding pivoting of the sheet metal profile 8 of the guide device 21 is carried out via an angle lever 20, which is fixed to the frame, and a drive pin (not shown) attached to it causes.
  • the pneumatic cylinder 19 can also be mounted directly in the protection 6 and articulated directly on the sheet profile 8.
  • the procedure described above is carried out in the opposite direction.
  • the guide device 8, 9 can be in the rest position, ie in the non-pivoted state (in FIG. 2 shown in dashed lines) remain.
  • the tensioning rail 4 of the pressure start DA is opened, so that the printing end area of the pressure plate springs out of the tensioning rail 4 and, by slowly turning the plate cylinder 1 backwards, is supported on the guide device 8, 9 in the gap between the guide plates 11 and 12 is funded.
  • the printing plate can now be removed by hand or, as will be described in more detail, can be grasped by a controllable holding device and can be removed from the area of the plate cylinder 1 after opening of the pressure start clamping rail 3.
  • the guide device 21 described in detail above is constructed identically on each printing unit of the sheet-fed offset printing press.
  • the guide devices 21 in the guards 6 of the printing units are only indicated.
  • the insertion gap between the guide plates 11, 12 (FIG. 2) is not shown in the illustration according to FIG. 1.
  • a guide rail 22 is arranged above the printing machine shown in FIG. 1 and is fastened, for example, to each printing unit and further suspensions on the ceiling of the printing room via bridge-shaped supports 23.
  • the guide rail 22 can also only be attached to the ceiling of the printing room.
  • the supports 23 have, for example, the shape as shown in FIG. 5.
  • the profile of the guide rail 22 is in particular T-shaped on the underside (FIG. 5).
  • a carriage 24 is movably suspended along the guide rail 22 in the manner of a trolley.
  • the carriage 24 has its own drive, by means of which it can be moved along the guide rail 22 and can be stopped exactly at certain positions.
  • Lifting devices 25 are arranged, each having a controllable holding device 26 on its underside for gripping or grasping the printing end of a printing plate.
  • the holding devices 26 can, for example, be suction devices and / or grippers, in particular also a combination of such devices.
  • the guide rail 22 runs at such a height above the printing units of the printing press, so that the two lifting devices 25 with a printing plate thereon can be moved above the printing units in the raised state.
  • the height of the guide rail 22 is selected such that the carriage 24 can be moved with the lifting devices 25 beyond the feeder or boom and a pressure plate attached to the holding device 26 can be transported safely above a person.
  • FIGS. 3 and 4 show the transport device, identified overall by 27, above a printing unit once again in detail.
  • the two lifting devices 25 with the holding devices 26 thereon for the pressure plates are constructed in the same way according to this exemplary embodiment and consist of a first lifting drive 28 which is attached via a fastening arm below the carriage 24 and a second lifting drive 29 on which the holding device 26 for gripping a pressure plate is attached.
  • the first lifting drive 28 cooperates with a rail 30 in such a way that this rail 30 can be lowered or pulled up fully.
  • the two end positions of the rail 30 with respect to the first lifting drive 28 can be seen in FIGS. 3 and 4.
  • the rail 30 has in particular an H-shaped profile and can, for example, by means of appropriate rollers and friction or interact positively in the manner of a rack and pinion drive with the first lifting drive 28.
  • the length of the rail 30 is chosen somewhat larger than the maximum format length of the printing plates to be used.
  • the second lifting drive 29 is arranged such that it can move along the rail 30, and in particular interacts with the rail 30 according to the same principle as the lifting drive 28. 3 and 4 that the second lifting drive 29 is located at the upper end of the rail 30 when the rail 30 has been pulled up to its end position by the first lifting drive 28, that is to say the rail 30 by the first lifting drive 28 is detected in the area of its lower end.
  • the second position to be realized corresponds to that in which the first lifting drive 28 has moved the rail 30 fully down and the second lifting drive 29 has been moved along the rail 30 into the lower end position.
  • Lift drives 28, 29 are connected to one another in terms of control technology so that the positions described above, namely the basic position and the fully extended position, are approached simultaneously.
  • the two lifting devices 25 attached to the trolley 24 thus represent a telescopic lifting system.
  • FIG 3 shows the transport device 27 according to the invention above a printing unit, in which the lifting device 25 shown on the left has been moved into the lower end position by correspondingly actuating the first and second lifting drives 28, 29, in order to position the carriage 24 there by means of the holding device 26 to detect an old printing plate conveyed out of the gap between the guide plates 11, 12.
  • the holding device 26 on this lifting device 25 is thus positioned such that the printing end of a printing plate is conveyed, for example, directly into the open grippers of the holding device 26.
  • sensors can also be provided which determine the presence of a pressure plate then control the grippers to grasp the pressure plate.
  • the carriage 24 of the transport device 27 is, as a comparison of FIGS. 3 and 4 shows, a certain distance, corresponding to the distance between the two lifting devices, in the direction of the guide rail 22, so that the holding device 26 of the right lifting device 25 is accurate located above the gap between the guide plates 11 and 12 (Fig. 2). Then the first and second lifting drives 28, 29 are controlled so that the holding device 26 of the right lifting device 25 slowly lowers and the new printing plate with its pressure start area through the gap of the guide plates 11, 12 and the guide device 21 employed on the plate cylinder 1 into the open pressure start clamping rail 3 (after appropriate plate cylinder positioning) is conveyed into it. Sensors can be provided on the tensioning rail 3, by means of which a correct contact of the pressure start area of the pressure plate can be determined and whereupon the pressure plate is automatically clamped by a control by closing the tensioning rail 3.
  • the holding device 26 of the right lifting device 25 can release the printing end area of the printing plate, whereupon the guide device 21 is pivoted away from the plate cylinder 1 and the pressure roller 18 (FIG. 2) is set against the plate cylinder .
  • the new printing plate is drawn around its outer circumference until the printing end comes into the area of the printing end clamping rail 4, as already described above.
  • This pressure plate container 31 has a multiplicity of adjacent and vertically upwardly open receiving compartments for individual printing plates and, as can also be seen in FIG. 1, is arranged in an elevated manner, so that the transport device 27 located above it, due to the feasible lifting paths of the lifting devices 25, a used printing plate into one empty compartment as well as a new printing plate to be removed.
  • the printing plate container 31 can itself be a movable transport container and thus form part of an automatic and in particular driverless printing plate logistics system.
  • a new lifting device 25 is in turn by means of the lifting device 25 on the right in FIGS , for the next printing unit intended printing plate and by Appropriate control of the drive of the carriage 24 moved the transport device 27 to the next printing unit.
  • the transport device 27 in turn assumes a position according to FIG. 3. The process described is repeated.
  • FIG. 5 shows the suspension of the transport device 27 according to the invention above the printing units of the printing press once again from the direction of view of the delivery arm.
  • the supports 23 for the guide rail 22 are each fastened to a side frame wall of the drive and operating side of the printing press.
  • a pressure plate 32 is shown on the holding device 26 of the second lifting drive 29 located in the upper end position. So that, in particular, used printing plates can be used for rolling up by the device according to the invention because of their slope, a frame is additionally attached to each lifting device 25 around the printing plate 32.
  • This frame essentially consists of a cross-member 33, which is somewhat wider than the maximum format of the pressure plate 32.
  • This cross-member 33 has a slot across its width, through which the pressure plate 32 can be gripped and conveyed by means of the holding device 26.
  • the cross member 33 as can be seen in connection with FIGS. 3 and 4, is attached to the end of a guide rod 34 and hangs over this to a cross member 35 attached to the second lifting drive 29. It is provided that this crossmember 33 is supported on the guard 6 according to FIG. 2 when the rail 30 is lowered above the guide plates 11, 12. So that the printing plates are fed exactly in the direction of the side register, it can be provided that the cross member 33 is aligned when it is placed on the guard 6 by means of stop means brought into contact with one another.
  • a guide rod 34 is attached, the length of which corresponds approximately to the maximum printing plate format and which are inserted through two further bores at the ends of the second crossmember 35 and thus the crossmember the crossmember 33 parallel to this Truss 35 make it movable.
  • This second traverse is attached to the second lifting drive 29, on which the holding devices 26 for the pressure plates are also located.
  • a used and appropriately rolled-up printing plate is bent essentially straight and, furthermore, it prevents the starting and stopping processes of the trolley 24 from causing the old and new printing plates to swing too much.
  • the traversing and work processes described so far are carried out by an appropriately trained control system or initiated by a program run.
  • the sequence when changing the printing plates of a multi-color printing machine can be time-optimized, so that the time is optimally used when pulling up a new printing plate to fetch another printing plate from the staging area.

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Rotary Presses (AREA)

Abstract

A device for changing printing plates automatically in offset sheet printing machines having a plurality of printing units is to be improved, in particular in respect of the construction-related outlay for the means for conveying printing plates. Mounted on each plate cylinder of a printing unit is a guide device which can be pivoted so as to engage with and be disengaged from the plate cylinder and by means of which a new printing plate can be fed from above to the plate cylinder and an old printing plate can be conveyed out again, likewise towards the top, while the plate cylinder is rotating slowly backwards. Mounted above the printing machine is a guide rail on which a carriage of a transporting device with lifting devices can be moved along all the printing units of the printing machine. The transporting device conveys the printing plates from the printing units to a central printing-plate container and conveys new printing plates from the latter to the respectively intended printing unit where said printing plates are fed to the plate cylinder via the lifting device and the respectively engaged guide device.

Description

Die Erfindung betrifft eine Vorrichtung zum automatischen Wechseln von Druckplatten bei Bogenoffsetdruckmaschinen gemäß dem Oberbegriff von Anspruch 1.The invention relates to a device for automatically changing printing plates in sheet-fed offset printing machines according to the preamble of claim 1.

Zum Wechseln der Druckplatten bei Bogenoffsetdruckmaschinen wird in der Regel zunächst in einem Druckwerk die alte Druckplatte entfernt, was durch Öffnen einer dem Druckende der Druckplatte zugeordneten Spannschiene geschieht. Bei sich langsam rückwärts drehendem Plattenzylinder wird diese Druckplatte sodann aus dem Druckwerk herausgefördert. Nach dem Öffnen der dem Druckanfang zugeordneten Spannschiene kann die Druckplatte ganz aus dem Druckwerk entnommen werden. Daraufhin erfolgt das Aufziehen einer neuen Druckplatte, in dem der Druckanfang dieser Druckplatte in die entsprechende Druckanfang-Spannschiene eingelegt, daraufhin der Plattenzylinder langsam in Vorwärtsdrehrichtung verfahren und somit die Druckplatte eingezogen und daraufhin das Druckende der Druckplatte in die entsprechende Spannschiene eingelegt wird.To change the printing plates in sheet-fed offset printing machines, the old printing plate is generally first removed in a printing unit, which is done by opening a tensioning rail assigned to the printing end of the printing plate. When the plate cylinder rotates slowly backwards, this printing plate is then conveyed out of the printing unit. After opening the tensioning rail assigned to the start of printing, the printing plate can be removed completely from the printing unit. A new printing plate is then pulled up by inserting the start of this printing plate into the corresponding printing start clamping rail, then moving the plate cylinder slowly in the forward direction of rotation and thus pulling the printing plate in and then inserting the printing end of the printing plate into the corresponding clamping rail.

Der zuvor kurz umrissene Arbeitsablauf beim Wechseln einer Druckplatte in einem Druckwerk erfordert entsprechend viele manuelle Handhabungen an den Einrichtungen des Plattenzylinders, des Druckwerkes sowie mit der Druckplatte selbst. Entsprechend langwierig gestaltet sich das Wechseln von Druckplatten bei einer Mehrfarben-Bogenoffsetdruckmaschine mit mehreren Druckwerken.The previously briefly outlined workflow when changing a printing plate in a printing unit requires a correspondingly large number of manual manipulations on the equipment of the plate cylinder, the printing unit and with the printing plate itself. The changing of printing plates in a multi-color sheet-fed offset printing press with several printing units is correspondingly lengthy.

Um einen Teil der manuellen Handhabungsvorgänge beim Wechseln von Druckplatten einsparen zu können, sind bereits sogenannte halbautomatische Druckplattenwechselsysteme bekannt geworden, bei denen insbesondere das Klemmen, Freigeben, Spannen sowie Lösen der Druckplatten in den entsprechenden Einrichtungen der Plattenzylinder (Spannschienen) automatisch ausgeführt werden. Lediglich das Einführen und Herausnehmen der Druckplatten muß dann noch von einer Bedienperson durchgeführt werden. Durch zusätzliche Einführhilfen oder sonstige Unterstützungsmittel können die erforderlichen Handhabungen gerade beim Einführen einer neuen Druckplatte hinsichtlich Zeitersparnis bei der Durchführung reduziert werden. Eine derartige Einführhilfe ist aus der DE-Z "Druckwelt", 4, 25. Februar 1993, S. 28/29 unter der Bezeichnung "PPL" beschrieben.Part of the manual handling processes when changing from To be able to save printing plates, so-called semi-automatic printing plate changing systems have already become known, in which in particular the clamping, releasing, tensioning and releasing of the printing plates in the corresponding devices of the plate cylinders (clamping rails) are carried out automatically. Only the insertion and removal of the printing plates must then be carried out by an operator. By means of additional insertion aids or other support means, the required manipulations, particularly when inserting a new printing plate, can be reduced in terms of saving time during implementation. Such an insertion aid is described in DE-Z "Druckwelt", 4, February 25, 1993, pp. 28/29 under the name "PPL".

Die durch die EP 0 435 410 A2 sowie EP 0 432 660 A2 bekannt gewordenen Einrichtungen zum vollautomatischen Wechseln von Druckplatten bei Bogenoffsetdruckmaschinen machen jegliche Bedienhandlungen beim Ablauf des Druckplattenwechselvorganges entbehrlich. An jedem Druckwerk ist dabei eine komplette Druckplattenwechseleinrichtung vorgesehen, die im wesentlichen aus einer Speicherkammer zum Bereitstellen bzw. Aufnehmen ein oder mehrerer neuer bzw. gebrauchter Druckplatten besteht, sowie einem Transport- oder Fördermechanismus, vermittels dem die Druckplatten vom Plattenzylinder in die Speicherkammer bzw. von der Speicherkammer auf den Plattenzylinder gefördert werden können. Entsprechend der EP 0 435 410 A2 kann die Speicherkammer mehrere Druckplatten für eine Anzahl von Folgeaufträgen aufnehmen, so daß die Druckmaschine für eine bestimmte Anzahl von Aufträgen vorzurüsten ist. Gemäß dieser Druckschrift ist die Druckplattenwechseleinrichtung schwenkbar und an den Plattenzylinder an- bzw. von diesem abstellbar am jeweils folgenden Turm eines Druckwerkes angeordnet.The devices for fully automatic changing of printing plates in sheetfed offset printing presses, which have become known from EP 0 435 410 A2 and EP 0 432 660 A2, make any operating actions during the printing plate changing process unnecessary. A complete printing plate changing device is provided on each printing unit, which essentially consists of a storage chamber for providing or receiving one or more new or used printing plates, as well as a transport or conveying mechanism by means of which the printing plates move from the plate cylinder into the storage chamber or from the storage chamber can be promoted to the plate cylinder. According to EP 0 435 410 A2, the storage chamber can hold several printing plates for a number of subsequent jobs, so that the printing press has to be prepared for a certain number of jobs. According to this document, the printing plate changing device can be pivoted and arranged on or off from the plate cylinder on the following tower of a printing unit.

Die an jedem Druckwerk befindliche Einrichtung zum automatischen Druckplattenwechsel gemäß den oben genannten Vorveröffentlichungen sind beispielsweise während des Druckbetriebes von einer Bedienperson mit neuen Druckplatten zu beschicken bzw. die in der Speicherkammer befindlichen gebrauchten Druckplatten müssen von einer Bedienperson entnommen werden. Entsprechend viele Handhabungen sind in den einzelnen Speicherkammern der den Druckwerken zugeordneten Druckplattenwechselvorrichtungen durchzuführen. Gerade im Falle der in der EP 0 435 410 A2 vorgesehenen Speicherkammer für eine bestimmte Anzahl neuer Druckplatten ergibt sich bei einer Umdisponierung hinsichtlich der Auftragsbelegung der Druckmaschine unter Umständen ein recht mühseliges Umsortieren bzw. Auswechseln mit den bereits in die Speicherkammer eingelegten Druckplatten.The device for automatic printing plate change in accordance with the above-mentioned prior publications, which is located on each printing unit, must be loaded with new printing plates by an operator, for example, during printing operation, or those in the Used printing plates located in the storage chamber must be removed by an operator. A corresponding number of operations have to be carried out in the individual storage chambers of the printing plate changing devices assigned to the printing units. Especially in the case of the storage chamber for a certain number of new printing plates provided in EP 0 435 410 A2, a rescheduling with regard to the order allocation of the printing machine may result in a rather tedious re-sorting or replacement with the printing plates already inserted in the storage chamber.

Bei den durch die zitierten Schriften bekannt gewordenen Druckplattenwechseleinrichtungen ist insgesamt als nachteilig anzusehenden, daß an jedem Druckwerk eine komplette Einrichtung, bestehend aus Speicherkammer und Transport-/Fördermechanismus für die Druckplatten, vorzusehen ist. Dies ergibt gerade bei einer hohen Zahl von Druckwerken einen entsprechend hohen bautechnischen Aufwand. Ein weiterer Nachteil ergibt sich durch den zusätzlichen Bauraum im Bereich zwischen den Druckwerken, welchen diese vorbekannten Einrichtungen benötigen. Bei den vorbekannten Druckplattenwechselsystemen ist zwar vorgesehen, daß diese an- und abstellbar an den Plattenzylinder angeordnet oder sonst wie wegschwenkbar gelagert sind, jedoch ergibt sich in dem ohnehin recht engen Raum zwischen den Druckwerken einer Bogenoffsetdruckmaschine im Mittelformat eine zum Teil beträchtliche Einengung in der Bewegungsfreiheit einer Bedienperson, welche beispielsweise einen Gummituchwechsel, einen Wechsel einer Farbauftragswalze oder sonstige Servicearbeiten durchzuführen hat. Zuzüglich der bereits genannten Nachteile ergibt sich, daß die vorbekannten Einrichtungen ausschließlich ein vollautomatisches Wechseln der Druckplatten ermöglichen und bei Ausfall oder einer Beschädigung eines Druckplattenwechslers an einem oder mehreren Druckwerken die Druckplatten wie üblich von Hand - falls dies überhaupt noch möglich ist - zu wechseln sind.In the case of the printing plate changing devices which have become known from the cited documents, it is to be regarded as disadvantageous overall that a complete device consisting of a storage chamber and a transport / conveying mechanism for the printing plates must be provided on each printing unit. Especially with a large number of printing units, this results in a correspondingly high structural outlay. Another disadvantage arises from the additional installation space in the area between the printing units, which these previously known devices require. In the known printing plate changing systems it is provided that these are arranged on and off the plate cylinder or are otherwise pivoted away, but in the already quite narrow space between the printing units of a sheetfed offset press in medium format there is a sometimes considerable restriction in the freedom of movement of one Operator who has to carry out a blanket change, a change of the inking roller or other service work, for example. In addition to the disadvantages already mentioned, the known devices only allow the printing plates to be changed fully automatically, and in the event of failure or damage to a printing plate changer on one or more printing units, the printing plates can be changed by hand, as is usual, if this is still possible.

Aus der EP 0 100 778 B1 ist eine Vorrichtung zum automatischen Auswechseln von Druckplatten bekannt, die eine Fördereinheit zum Fördern der Platte zu einer vorbestimmten Stelle an einer Druckstation und eine Liefereinheit zum Abnehmen der Platte von der Fördereinheit und zum Zuführen dieser Druckplatte zum Plattenzylinder aufweist. Diese vorbekannte Vorrichtung sieht spezielle Druckplatten mit insbesondere speziellen Haltemechanismen dergestalt vor, daß die Platten-Haltemittel mit den daran montierbaren Druckplatten elastische Einheiten bilden. Bei herkömmlichen Bogenoffsetdruckmaschinen der hier angesprochenen und weit verbreiteten Art sind jedoch derartige spezielle Platten-Haltemittel nebst Druckplatten nicht verwendbar.From EP 0 100 778 B1 a device for the automatic exchange of printing plates is known, which a conveyor unit for Conveying the plate to a predetermined location at a printing station and a delivery unit for removing the plate from the conveyor unit and for feeding this printing plate to the plate cylinder. This previously known device provides special printing plates with, in particular, special holding mechanisms in such a way that the plate holding means form elastic units with the printing plates which can be mounted thereon. In conventional sheetfed offset printing presses of the type mentioned and widely used, however, such special plate holding means and printing plates cannot be used.

Der vorliegenden Erfindung liegt somit die Aufgabe zugrunde, eine Vorrichtung gemäß dem Oberbegriff von Anspruch 1 derartig weiterzubilden, so daß der bautechnische Aufwand reduziert werden kann und trotzdem ein vollautomatisches Druckplattenwechselsystem vorliegt, welches zudem vielfältiger einsetzbar und auch erweiterbar ist.The present invention is therefore based on the object of developing a device in accordance with the preamble of claim 1 in such a way that the structural outlay can be reduced and nevertheless a fully automatic printing plate changing system is present which is also more versatile and can also be expanded.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the characterizing features of claim 1. Further developments of the invention result from the subclaims.

Nach der Erfindung ist vorgesehen, daß an jedem Druckwerk im Bereich des Plattenzylinders eine schwenkbar an den Plattenzylinder an- und von diesem abstellbar gelagerte Leiteinrichtung angeordnet ist, mit der eine auf dem Druckzylinder befindliche Druckplatte nach dem Lösen der dem Druckende zugeordneten Spanneinrichtung bei sich langsam rückwärts drehendem Druckzylinder gezielt aus dem Druckwerk herausgefördert werden kann, so daß dieses herausgeförderte Ende der Druckplatte von einer noch weiter unten genauer beschriebenen Transporteinrichtung bzw. daran befindlichen Haltevorrichtungen erfaßt werden kann und nach dem Lösen der dem Druckanfang zugeordneten Klemmvorrichtung am Plattenzylinder von dem Druckwerk weggefördert werden kann. Die erfindungsgemäß vorgesehene Leiteinrichtung an jedem Druckwerk ist dergestalt, daß eine von der Transporteinrichtung nebst den steuerbaren Haltevorrichtungen an eben diesem Druckwerk bereitgestellte neue Druckplatte nach entsprechender Positionierung des Plattenzylinders in die geöffnete, dem Druckanfang zugeordnete Klemmeinrichtung hineingefördert werden kann. Danach geben die steuerbare Haltevorrichtungen der Transporteinrichtung die Druckplatte, welche die neue Druckplatte ebenfalls an ihrem Druckende-Bereich festhalten, frei und die neue Druckplatte wird durch langsames Drehen des Plattenzylinders in Vorwärtsrichtung auf diesen aufgezogen. Durch eine an den Plattenzylinder anstellbare Andruckrolle wird das Druckende der Druckplatte in die geöffnete hintere Spanneinrichtung eingeführt und daraufhin automatisch gespannt. Der zuvorstehend grob beschriebene Vorgang wird bei jedem Druckwerk wiederholt, bis alle Plattenzylinder mit jeweils einer neuen Druckplatte versorgt sind.According to the invention it is provided that on each printing unit in the area of the plate cylinder a pivotally attached to the plate cylinder and detachable therefrom is arranged with which a printing plate located on the printing cylinder after loosening the clamping device associated with the printing end slowly backwards rotating printing cylinder can be conveyed out of the printing unit in a targeted manner, so that this end of the printing plate which has been conveyed out can be gripped by a transport device or holding devices located thereon which are described in more detail below and can be conveyed away from the printing unit after the clamping device on the plate cylinder assigned to the start of printing has been released . The guide device provided according to the invention on each printing unit is such that one of the transport device along with the controllable holding devices on the same Printing unit provided new printing plate after appropriate positioning of the plate cylinder can be conveyed into the open clamping device assigned to the start of printing. The controllable holding devices of the transport device then release the printing plate, which also hold the new printing plate at its printing end area, and the new printing plate is pulled onto it by slowly rotating the plate cylinder in the forward direction. The pressure end of the pressure plate is inserted into the open rear tensioning device by means of a pressure roller that can be adjusted to the plate cylinder and then automatically tensioned. The process roughly described above is repeated for each printing unit until all plate cylinders are each supplied with a new printing plate.

Nach der Erfindung ist weiterhin vorgesehen, daß neben den an den einzelnen Plattenzylindern der Druckwerke vorgesehenen Leiteinrichtungen eine allen Druckwerken zugeordnete und insbesondere entlang dieser verfahrbare Transporteinrichtung mit steuerbaren Haltevorrichtungen vorgesehen ist, vermittels der eine über die Leiteinrichtungen an einem Druckwerk ein Stück weit herausgeförderte alte Druckplatte im Bereich ihres Druckendes erfaßt und daraufhin ganz von dem Plattenzylinder abgenommen werden kann. Durch eine zweite steuerbare Haltevorrichtung einer verfahrbaren Transporteinrichtung wird sogleich eine neue Druckplatte über die Leiteinrichtung dem Plattenzylinder zugeführt.According to the invention it is further provided that, in addition to the guide devices provided on the individual plate cylinders of the printing units, a transport device associated with all printing units and in particular movable along this is provided with controllable holding devices, by means of which an old printing plate is conveyed out a little via the guide devices on a printing unit Area of their end of printing is detected and then can be removed entirely from the plate cylinder. By means of a second controllable holding device of a movable transport device, a new printing plate is immediately fed to the plate cylinder via the guide device.

Nachdem die verfahrbare Transporteinrichtung an einem Druckwerk eine Druckplatte entnommen und eine neue Druckplatte zugeführt hat wird ein zentraler Bereitstellplatz in Form eines Druckplattenbehälters von der Transporteinrichtung angefahren und dort die alte Druckplatte abgelegt und die für das nächste Druckwerk vorgesehene neue Druckwerke mit der zweiten steuerbaren Haltevorrichtung aufgenommen. Anschließend wird das nächste Druckwerk angefahren und der beschriebene Vorgang wiederholt sich.After the movable transport device has removed a printing plate from a printing unit and fed a new printing plate, a central supply station in the form of a printing plate container is approached by the transport device and the old printing plate is deposited there and the new printing units provided for the next printing unit are picked up with the second controllable holding device. Then the next printing unit is started and the process described is repeated.

Nach einem bevorzugten Ausführungsbeispiel der Erfindung ist die verfahrbare Transporteinrichtung über Rollen auf einer oberhalb der Druckmaschine angebrachten Führungsschiene aufgehängt, so daß die Transporteinrichtung nebst den steuerbaren Haltevorrichtungen über alle Druckwerke hinweg zu eben dem erwähnten Bereitstellungsplatz verfahren werden kann. Die Führungsschiene kann entweder an der Decke des Drucksaales oder zwischen Anleger und Ausleger mit zusätzlichen Stützten an jedem Druckwerk befestigt sein.According to a preferred embodiment of the invention, the movable transport device is suspended on rollers on a guide rail mounted above the printing press, so that the transport device can be moved along with the controllable holding devices across all printing units to the aforementioned supply location. The guide rail can either be attached to the ceiling of the printing room or between the feeder and delivery with additional supports on each printing unit.

Die Transporteinrichtung weist nach einem bevorzugten Ausführungsbeispiel der Erfindung insgesamt zwei steuerbare Haltevorrichtungen auf, wobei eine Haltevorrichtung für das Aufnehmen einer alten, aus dem Druckwerk herausgeförderten Druckplatte vorgesehen ist und die zweite Haltevorrichtung die neue, zuzuführende Druckplatte bereitstellt. Die Haltevorrichtungen sind als Greifer und/oder pneumatische Sauger ausgebildet und erfassen die Druckplatte insbesondere an mehreren Stellen im Bereich des jeweiligen Druckendes. Die Haltevorrichtungen sind über Hubvorrichtungen an der Transporteinrichtung angebracht, so daß bei der Anbringung der Transporteinrichtung an einer Führungsschiene oberhalb der Druckmaschine die Druckplatte aus einer angehobenen Stellung herabgelassen und dabei über die Leiteinrichtung dem Plattenzylinder zugeführt werden kann. Auch die Haltevorrichtung für die alte, abzuführende Druckplatte ist über eine Hubvorrichtung anheb- und absenkbar ausgebildet, so daß nach Absenken der Haltevorrichtung die nahezu ganz herausgeförderte Druckplatte gegriffen oder angesaugt und sodann angehoben werden kann. Der zu realisierende Hubweg richtet sich dabei im wesentlichen nach dem Druckplattenformat, da die neuen zuzuführenden und die alten abzuführenden Druckplatten gemäß dem bevorzugten Ausführungsbeispiel der Erfindung über die Druckwerke hinweg gefördert werden.According to a preferred exemplary embodiment of the invention, the transport device has a total of two controllable holding devices, one holding device being provided for receiving an old printing plate conveyed out of the printing unit and the second holding device providing the new printing plate to be supplied. The holding devices are designed as grippers and / or pneumatic suction devices and grip the pressure plate in particular at several points in the area of the respective printing end. The holding devices are attached to the transport device via lifting devices, so that when the transport device is attached to a guide rail above the printing press, the printing plate can be lowered from a raised position and can be fed to the plate cylinder via the guide device. The holding device for the old pressure plate to be discharged can be raised and lowered by means of a lifting device, so that after the holding device has been lowered, the pressure plate which has been almost completely removed can be gripped or sucked in and then raised. The stroke to be realized is essentially based on the printing plate format, since the new printing plates to be fed in and the old printing plates to be discharged are conveyed across the printing units in accordance with the preferred exemplary embodiment of the invention.

Der Vorteil der Erfindung ist, daß an jedem Druckwerk lediglich eine bautechnisch einfach zu realisierende Leiteinrichtung vorzusehen ist, vermittels der die Druckplatten dem Plattenzylinder zuund von diesem abgefördert werden können. Jedes Druckwerk verfügt somit über eine halbautomatische Druckplattenwechselvorrichtung. Durch den geringen Bauaufwand im Bereich des Druckwerkes wird auch wenig Bauraum benötigt.The advantage of the invention is that on each printing unit there is only one structurally simple to implement guide device by means of which the printing plates can be conveyed to and from the plate cylinder. Every printing unit has thus via a semi-automatic printing plate changing device. Due to the low construction costs in the area of the printing unit, little installation space is required.

Daß für alle Druckwerke nur eine verfahrbare Transporteinrichtung mit steuerbaren Haltevorrichtungen vorgesehen ist, stellt einen entscheidenden Vorteil der Erfindung dar. Da die Druckplatten mittels der erfindungsgemäß vorgesehenen Transporteinrichtung von einem zentralen Lagerplatz zu den jeweiligen Druckwerken verfahren werden, stellt das erfindungsgemäße Konzept eine Basis für eine in vielfältiger Weise erweiterungsfähige automatische Druckplattenlogistik innerhalb einer Druckerei dar.The fact that only one movable transport device with controllable holding devices is provided for all printing units is a decisive advantage of the invention. Since the printing plates are moved from a central storage location to the respective printing units by means of the transport device provided according to the invention, the concept according to the invention provides a basis for an in Automatic printing plate logistics within a print shop that can be expanded in many ways.

Werden kurzfristig Aufträge umgelegt oder die Reihenfolge der aufzuspannenden Druckplatten geändert, so muß dies nicht mehr wie bei den herkömmlichen Druckplattenwechselsystemen an den einzelnen Druckwerken erfolgen, sondern dies kann an dem zentralen Lagerplatz ohne große Wege vollzogen werden. Bei dem hier als Lagerplatz bezeichneten Bereitstellungsort für die Druckplatten, von dem aus die erfindungsgemäße verfahrbare Transporteinrichtungen die neuen Druckplatten entnimmt, kann es sich um einen Druckplattenbehälter handeln, der eine Schnittstelle zwischen einem beispielsweise führerlosen Transportsystem der Druckplatten innerhalb der Druckvorstufe und eben dem hier beschriebenen erfindungsgemäßen Druckplattenwechselsystem darstellt.If orders are placed at short notice or the order of the printing plates to be clamped is changed, this no longer has to be done at the individual printing units as in the conventional printing plate changing systems, but this can be done at the central storage location without great distances. The storage location for the printing plates, referred to here as the storage location, from which the transportable transport device according to the invention removes the new printing plates, can be a printing plate container that provides an interface between, for example, a driverless transport system for the printing plates within the prepress stage and the inventive one described here Represents printing plate changing system.

Werden beispielsweise zwei Druckmaschinen hintereinander angeordnet, so ist es gemäß der Erfindung auch möglich, mit einer einzigen verfahrbaren Transporteinrichtung die Druckplatten auch bei zwei Druckmaschinen, welche entsprechend an allen Druckwerken die erfindungsgemäß vorgesehenen Leiteinrichtungen aufweisen, zu wechseln. Der bereits bei einer Druckmaschine schon entscheidend ins Gewicht fallende Vorteil, daß nur eine Transporteinrichtung benötigt wird, erzeugt dann eine wesentlich größere Aufwandsreduzierung.If, for example, two printing presses are arranged one behind the other, it is also possible according to the invention to change the printing plates with a single movable transport device even with two printing presses which accordingly have the guide devices provided according to the invention on all printing units. The advantage, already decisive in the case of a printing press, that only one transport device is required then produces a substantially greater reduction in expenditure.

Bei dem zentralen Lagerplatz für die bereitzustellenden neuen und aufzunehmenden alten Druckplatten kann es sich in vorteilhafter Weise um einen selbst verfahrbaren Druckplattenbehälter handeln, der entweder von einer Person bedient oder führerlos Druckplatten transportiert.The central storage location for the new and old printing plates to be provided can advantageously be a self-moving printing plate container, which is either operated by a person or transports printing plates without a driver.

Ein wesentlicher Vorteil der Erfindung ist, daß auch ohne verfahrbare Transporteinrichtung die Druckmaschine noch über eine komfortable Möglichkeit des Druckplattenwechselns verfügt. Da an jedem Druckwerk die Plattenzylinder über fernbetätigbare automatische Einrichtungen zum Klemmen und Spannen und ferner über die erfindungsgemäß vorgesehene Leiteinrichtung verfügen, können insbesondere bei einem eventuellen Defekt der verfahrbaren Transporteinrichtung die Druckplatten auch manuell und relativ schnell gewechselt werden. Ferner ergibt dieses Konzept eine Aufbaulösung, wonach es möglich ist, zunächst eine Druckmaschine anzuschaffen, welche an jedem Druckwerk die vorgesehen Leiteinrichtungen aufweist und daß nach einiger Zeit, insbesondere wenn der entsprechende Bedarf festgestellt wird, als Nachrüstung eben die verfahrbare Transporteinrichtung zusätzlich installiert wird.An important advantage of the invention is that the printing press still has a convenient possibility of changing the printing plate even without a movable transport device. Since the plate cylinders on each printing unit have remote-controlled automatic devices for clamping and tensioning and also have the guide device provided according to the invention, the printing plates can also be changed manually and relatively quickly, in particular in the event of a defect in the movable transport device. Furthermore, this concept results in a constructional solution, according to which it is possible to first acquire a printing press which has the guide devices provided on each printing unit and that after some time, in particular if the corresponding need is determined, the movable transport device is additionally installed as a retrofit.

Als Weiterentwicklung der Erfindung kann vorgesehen sein, daß an jeder Druckplatte im Bereich des Druckendes eine sensorisch abtastbare Kennzeichnung angebracht ist (z.B. EAN-Code), der in verschlüsselter Form Auftrag, Druckfarbe, Farbreihenfolge, Farbzufuhrvoreinstellung usw. entnehmbar ist und die durch eine entsprechende Sensorik an der steuerbaren Haltevorrichtung abtastbar ist. Vermittels dieser Kennzeichnung an jeder Druckplatte sowie der Sensorik an der Haltevorrichtung kann sowohl das Auffinden der benötigten Druckplatte am zentralen Lagerplatz bzw. im Druckplattenbehälter vereinfacht werden und ferner ist es möglich, entsprechende Voreinstelldaten insbesondere für die Farbführung eben dieses Druckwerkes automatisch zur Einstellung bringen zu lassen.As a further development of the invention, it can be provided that a sensor-scannable marking is attached to each printing plate in the area of the printing end (e.g. EAN code), which can be removed in encrypted form by order, printing ink, color sequence, ink supply presetting, etc., and by an appropriate sensor system is palpable on the controllable holding device. By means of this marking on each printing plate and the sensors on the holding device, it is possible to simplify the finding of the required printing plate at the central storage location or in the printing plate container, and it is also possible to have corresponding presetting data, in particular for the inking of this printing unit, automatically set.

Des weiteren erfolgt die Erläuterung eines Ausführungsbeispieles der Erfindung anhand der Zeichnungen.Furthermore, an exemplary embodiment is explained the invention with reference to the drawings.

Es zeigt:

Fig. 1
eine Gesamtansicht einer Druckmaschine mit der erfindungsgemäßen Einrichtung,
Fig. 2
eine Leiteinrichtung an jedem Druckwerk,
Fig. 3 und 4
ein Druckwerk mit der erfindungsgemäßen Fig. 4 Transporteinrichtung in zwei Arbeitsstellungen und
Fig. 5
die Druckmaschine gemäßt Fig. 1 von der Auslage her betrachtet.
It shows:
Fig. 1
an overall view of a printing press with the device according to the invention,
Fig. 2
a control device on each printing unit,
3 and 4
a printing unit with the Fig. 4 transport device according to the invention in two working positions and
Fig. 5
the printing machine according to FIG. 1 viewed from the display.

In Fig. 1 ist eine Druckmaschine mit der erfindungsgemäßen Einrichtung, bestehend aus den an ihrem Druckwerk angebrachten Leiteinrichtungen 21 sowie der darüber befindlichen und verfahrbaren Transporteinrichtung 27 dargestellt. Zunächst wird aber anhand der Fig. 2 der Aufbau und die Funktion der Leiteinrichtung 21 beschrieben.1 shows a printing press with the device according to the invention, consisting of the guide devices 21 attached to its printing unit and the transport device 27 located above and movable. First, however, the structure and function of the guide device 21 will be described with reference to FIG. 2.

Fig. 2 zeigt als Ausschnitt den Teil eines Druckwerkes einer Druckmaschine in Reihenbauweise. Zwischen den zwei Seitengestellwänden dieses Druckwerkes ist ein Plattenzylinder 1 gelagert, der in einer Zylindergrube 2 eine dem Druckanfang DA und dem Druckende DE zugeordnete jeweils zum Klemmen/Spannen fernbetätigbare Spannschiene 3, 4 aufweist. Oberhalb des Plattenzylinders 1 befinden sich die Walzen eines Farbwerkes, von denen in Fig. 2 zwei Auftragwalzen angedeutet sind.Fig. 2 shows a part of a printing unit of a printing press in a row construction. Between the two side frame walls of this printing unit, a plate cylinder 1 is mounted, which in a cylinder pit 2 has a tensioning rail 3, 4 which is remotely operable for clamping / tensioning and which is assigned to the pressure start DA and the pressure end DE. Above the plate cylinder 1 are the rollers of an inking unit, two of which are indicated in FIG. 2.

Vor dem Druckwerk mit dem Plattenzylinder 1 und dem darunter angeordneten Gummituchzylinder 5 ist über je eine an einer Seitengestellwand des Druckwerkes angebrachte Führungsschiene ein Schutz 6 verschiebbar angeordnet, der sich gemäß Fig. 2 in einer Grundstellung während des Druckbetriebes befindet. Zur Zugänglichkeit zu den Druckwerkszylindern, insbesondere um das Gummituch zu wechseln, kann dieser, wie durch den Pfeil angedeutet, verschoben werden. Der Schutz 6 erstreckt sich über die Breite des Druckwerkes.In front of the printing unit with the plate cylinder 1 and the blanket cylinder 5 arranged underneath, there is one on each Side frame wall of the printing unit attached guide rail a protection 6 slidably arranged, which is shown in FIG. 2 in a basic position during printing. For access to the printing unit cylinders, in particular to change the rubber blanket, it can be moved as indicated by the arrow. The protection 6 extends across the width of the printing unit.

An einem oberen Teil des Schutzes 6 ist als Drehgelenk vorzugsweise eine Schwenkachse 7 angebracht, an der ein Blechprofil 8 aufgehängt ist. Das Blechprofil 8 weist dabei eine konkave Krümmung auf und besitzt die Formatbreite des Plattenzylinders 1. An dem schwenkbaren Ende des Blechprofils 8 ist eine Einführschiene 9 angebracht, die durch Verschwenken des Blechprofils 8 an den Außenumfang des Plattenzylinders 1 an- bzw. von diesem abschwenkbar ist (Pfeil). In der dargestellten Ausführungsform gemäß Fig. 1 ist die Einführschiene 9 durch eine entsprechende Profilierung des schwenkbaren Endes des Blechprofils 8 entstanden.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 concave curvature and has the format width of the plate cylinder 1. At the pivotable end of the sheet profile 8, an insertion rail 9 is attached, which can be pivoted by pivoting the sheet profile 8 to the outer circumference of the plate cylinder 1 or swung away from it (Arrow). In the embodiment shown in FIG. 1, the insertion rail 9 is created by appropriate profiling of the pivotable end of the sheet profile 8.

An der oberen Traverse 10 des Schutzes 6 ist ein Führungsblech 11 angebracht, welches fast bis zur Oberkante des Blechprofiles 8, also in etwa bis zur Höhe der Schwenkachse 7 heruntergezogen ist. Gegenüberliegend dem Führungsblech 11 ist ebenfalls am Schutz 6 ein Führungsblech 12 angebracht, welches zwei abgebogene Schenkel aufweist. Die Führungsbleche 11 und 12 erstrecken sich dabei über die Breite des Schutzes 6 bzw. über die Formatbreite des Plattenzylinders 1 und bilden einen Spalt zum Durchführen einer Druckplatte. Hier kann auch ein entsprechend dem Format der Druckplatte verschiebbar gelagerter Seitenanschlag vorgesehen sein, durch den bewerkstelligt wird, daß eine neu zuzuführende Druckplatte in korrekter Seitenregisterrichtung eingeführt wird.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. Opposite the guide plate 11, 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 displaceably mounted in accordance with the format of the printing plate can also be provided here, by means of which a pressure plate which is to be newly introduced is introduced in the correct direction of the side register.

Auf der konkav gestalteten Innenseite des gekrümmten Blechprofils 8 sind in mehreren Streifen voneinander beabstandet Bürsten 13 angeordnet, über deren Borsten sich die Druckplatte mit ihrer druckenden Seite schonend abstützen kann. Am Führungsblech 11 der Traverse 10 sind ebenfalls zur schonenden Abstützung der Druckplatte Bürsten 14 angeordnet. Anstelle der vorzugsweise verwendeten Bürsten 13, 14 können zur kratz- oder verschleißfreien Abstützung der Druckplatte auch andere Einrichtungen vorgesehen sein.Brushes 13 are spaced apart from one another in a plurality of strips on the concave inner side of the curved sheet-metal profile 8, the bristles of which can be used to gently support the printing plate with its printing side. On the guide plate 11 Traverse 10 are also arranged for gentle support of the pressure plate brushes 14. Instead of the brushes 13, 14 which are preferably used, other devices can also be provided for scratch-free or wear-free support of the pressure plate.

Die Einführschiene 9 am schwenkbaren Ende des Blechprofils 8 weist das in Fig. 2 dargestellte Profil auf und besitzt eine zum Plattenzylinder 1 weisende Einführfläche 15, die in der Höhe der Borsten der Bürsten 13 liegt.The insertion rail 9 at the pivotable end of the sheet metal profile 8 has the profile shown in FIG. 2 and has an insertion surface 15 facing the plate cylinder 1, which lies at the level of the bristles of the brushes 13.

Zum Einführen einer neuen Druckplatte wird das Blechprofil 8, wie in Fig. 2 gezeigt, an den Plattenzylinder 1 angeschwenkt, wozu dieser vorher in die entsprechende Position verdreht wird. Die Einführschiene 9 weist in ihrer beidseitigen Verlängerung (nicht dargestellt) je einen Anschlag auf, mit denen sie sich an speziellen Stützflächen der Spannschiene abstützt. Die entsprechende Flächen an der Spannschiene sind so ausgebildet, daß bei Abweichung von der Sollposition des Zylinders, die Einführfläche 15 ihre relative Lage zur Spannschiene 3 nur unwesentlich verändert. Die Anschläge sind dabei zur Beabstandung der Einführschiene 9 gegenüber den Druckanfang DA des Plattenzylinders 1 derartig ausgebildet, so daß die Einführfläche 15 auf einer Höhe mit dem geöffneten Erfassungsbereich 17 der Spannschiene 3 liegt.To insert a new printing plate, the sheet profile 8 is pivoted onto the plate cylinder 1, as shown in FIG. 2, for which purpose it is rotated beforehand into the corresponding position. In its extension on both sides (not shown), the insertion rail 9 each has a stop with which it is supported on special support surfaces of the tensioning rail. The corresponding surfaces on the tensioning rail are designed such that, in the event of a deviation from the desired position of the cylinder, the insertion surface 15 changes its position relative to the tensioning rail 3 only insignificantly. The stops are designed to space the insertion rail 9 from the pressure start DA of the plate cylinder 1 such that the insertion surface 15 is at the same level as the open detection area 17 of the tensioning rail 3.

Eine neu zuzuführende Druckplatte kann nun entweder von Hand, oder wie noch beschrieben wird, über die ansteuerbare Haltevorrichtung an der Oberseite des Schutzes 6 zwischen dem Führungsblech 11 und dem gegenüberliegenden Führungsblech hindurch und sich über die Bürsten 13 am Blechprofil 8 abstützend direkt in die geöffnete Spannschiene 3 eingeführt werden. Wie in Fig. 2 erkennbar, stellen die Einführfläche 15 der Einführschiene 9 einerseits und der Außenumfang des Plattenzylinders 1 im Bereich des Druckanfangs DA andererseits einen über die Formatbreite des Plattenzylinders 1 reichenden Trichter dar, der bewirkt, daß die Vorderkante der Druckplatte direkt in den spaltförmigen Erfassungsbereich 17 der Spannschiene 3 eingeführt werden kann.A pressure plate to be newly fed can now either by hand, or as will be described, via the controllable holding device on the top of the guard 6 between the guide plate 11 and the opposite guide plate and, supported by the brushes 13 on the plate profile 8, directly into the opened tensioning rail 3 will be introduced. As can be seen in Fig. 2, 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 start of printing DA on the other hand represent a funnel which extends over the format width of the plate cylinder 1 and which causes the front edge of the printing plate directly into the gap-shaped Detection area 17 of the Clamping rail 3 can be inserted.

Nach dem Einführen einer Druckplattenvorderkante in die vordere Spannschiene 3 erfolgt das Klemmen der Druckplatte durch Schließen des Erfassungsbereiches 17. Nun kann die Leiteinrichtung 8, 9 bestehend aus Blechprofil 8 mit der Einführschiene 9 wieder abgeschwenkt werden. Der Plattenzylinder 1 wird nun durch entsprechende Ansteuerung des Hauptantriebes der Druckmaschine in eine langsame Vorwärtsdrehung versetzt, wobei sich die Druckplatte um den Außenumfang des Plattenzylinders 1 aufzieht. In Fig. 2 ist eine Andrückrolle 18 bezüglich dem Plattenzylinder 1 an- und abstellbar gelagert vorgesehen, durch welche die Druckplatte beim Aufziehvorgang an den Außenumfang des Plattenzylinders 1 angedrückt wird. Die Andrückrolle 18 erstreckt sich über die gesamte Formatbreite und ist beispielsweise über zwei Lagerhebel (je einer an einer Seitengestellwand der Druckmaschine) und über je einen Pneumatikzylinder an- und abstellbar. Wie aus dem Stand der Technik bekannt, vermag eine derartige Andrückrolle 18 das nachlaufende Ende der Druckplatte in eine entsprechend gestaltete Spannschiene 4 des Druckendes DE einzuführen. Diese wird sodann über fernbetätigbare Einrichtungen im Plattenzylinder geschlossen (Klemmen).After inserting a leading edge of the printing plate into the front clamping rail 3, the printing plate is clamped by closing the detection area 17. Now the guide device 8, 9 consisting of 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, the printing plate being drawn around the outer circumference of the plate cylinder 1. In Fig. 2, a pressure roller 18 is mounted on and off with respect to the plate cylinder 1, by means of which the pressure plate is pressed against the outer circumference of the plate cylinder 1 during the mounting 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 able to insert the trailing end of the printing plate into a correspondingly designed tensioning rail 4 of the printing end DE. This is then closed via remotely operated devices in the plate cylinder (terminals).

Zum An- und Abschwenken der Leiteinrichtung 8, 9 sind beispielsweise an beiden Seitengestellwänden der Druckmaschine je ein Pneumatikzylinder 19 angebracht, der über je einen gestellfest gelagerten Winkelhebel 20 und je einen daran angebrachten Mitnehmerzapfen (nicht dargestellt) das entsprechende Verschwenken des Blechprofils 8 der Leiteinrichtung 21 bewirkt. Selbstverständlich können die Pneumatikzylinder 19 auch direkt im Schutz 6 angebracht und direkt am Blechprofil 8 angelenkt sein.To pivot the guide device 8, 9 in and out, for example, a pneumatic cylinder 19 is attached to each of the side frame walls of the printing press, and the corresponding pivoting of the sheet metal profile 8 of the guide device 21 is carried out via an angle lever 20, which is fixed to the frame, and a drive pin (not shown) attached to it causes. Of course, the pneumatic cylinder 19 can also be mounted directly in the protection 6 and articulated directly on the sheet profile 8.

Zum Abnehmen einer auf dem Plattenzylinder 1 befindlichen Druckplatte wird entsprechend in umgekehrter Richtung des bisher beschriebenen Ablaufes verfahren. Die Leiteinrichtung 8, 9 kann dazu in der Ruhestellung, d.h. im nicht angeschwenkten Zustand (in Fig. 2 gestrichelt dargestellt) verbleiben. Nach einer entsprechenden Positionierung des Plattenzylinders 1 wird die Spannschiene 4 des Druckanfanges DA geöffnet, so daß der Druckende-Bereich der Druckplatte aus der Spannschiene 4 herausspringt und durch langsames Rückwärtsdrehen des Plattenzylinders 1 sich auf der Leiteinrichtung 8, 9 abstützend in den Spalt zwischen den Führungsblechen 11 und 12 gefördert wird. Die Druckplatte kann dort nun von Hand entnommen oder, wie noch genauer beschrieben wird, durch eine steuerbare Haltevorrichtung erfaßt und nach Öffnen der Druckanfang-Spannschiene 3 aus dem Bereich des Plattenzylinders 1 entfernt werden.In order to remove a printing plate located on the plate cylinder 1, the procedure described above is carried out in the opposite direction. For this purpose, the guide device 8, 9 can be in the rest position, ie in the non-pivoted state (in FIG. 2 shown in dashed lines) remain. After appropriate positioning of the plate cylinder 1, the tensioning rail 4 of the pressure start DA is opened, so that the printing end area of the pressure plate springs out of the tensioning rail 4 and, by slowly turning the plate cylinder 1 backwards, is supported on the guide device 8, 9 in the gap between the guide plates 11 and 12 is funded. The printing plate can now be removed by hand or, as will be described in more detail, can be grasped by a controllable holding device and can be removed from the area of the plate cylinder 1 after opening of the pressure start clamping rail 3.

Die zuvorstehend ausführlich beschriebene Leiteinrichtung 21 ist an jedem Druckwerk der Bogenoffsetdruckmaschine gleichartig aufgebaut. In einer Bogenoffsetdruckmaschine in Reihenbauweise gemäß Fig. 1 sind die Leiteinrichtungen 21 in den Schutzen 6 der Druckwerke lediglich angedeutet. Der Einführspalt zwischen den Führungsblechen 11, 12 (Fig. 2) ist in der Darstellung gemäß Fig. 1 nicht wiedergegeben.The guide device 21 described in detail above is constructed identically on each printing unit of the sheet-fed offset printing press. In a sheet-fed offset printing press in series construction according to FIG. 1, the guide devices 21 in the guards 6 of the printing units are only indicated. The insertion gap between the guide plates 11, 12 (FIG. 2) is not shown in the illustration according to FIG. 1.

Oberhalb der in Fig. 1 gezeigten Druckmaschine ist eine Führungsschiene 22 angeordnet, die beispielsweise über brückenförmige Stützen 23 an jedem Druckwerk und weiteren Aufhängungen an der Decke des Drucksaales befestigt ist. Die Führungsschiene 22 kann auch ausschließlich nur an der Decke des Drucksaales angebracht sein. Die Stützen 23 haben beispielsweise die Form wie in Fig. 5 gezeigt. Das Profil der Führungsschiene 22 ist an der Unterseite insbesondere T-förmig (Fig. 5).A guide rail 22 is arranged above the printing machine shown in FIG. 1 and is fastened, for example, to each printing unit and further suspensions on the ceiling of the printing room via bridge-shaped supports 23. The guide rail 22 can also only be attached to the ceiling of the printing room. The supports 23 have, for example, the shape as shown in FIG. 5. The profile of the guide rail 22 is in particular T-shaped on the underside (FIG. 5).

Entlang der Führungsschiene 22 ist nach Art einer Laufkatze ein Fahrwagen 24 beweglich aufgehängt. Der Fahrwagen 24 weist dabei einen eigenen Antrieb auf, mittels dem er entlang der Führungsschiene 22 zu verfahren und an bestimmten Positionen exakt angehalten werden kann.A carriage 24 is movably suspended along the guide rail 22 in the manner of a trolley. The carriage 24 has its own drive, by means of which it can be moved along the guide rail 22 and can be stopped exactly at certain positions.

An der Unterseite des Fahrwagens 24 sind insgesamt 2 Hubvorrichtungen 25 angeordnet, die an ihrer Unterseite jeweils eine steuerbare Haltevorrichtung 26 zum Greifen bzw. Erfassen des Druckendes einer Druckplatte aufweisen. Bei den Haltevorrichtungen 26 kann es sich beispielsweise um Sauger und/oder Greifer also insbesondere auch um eine Kombination von derartigen Einrichtungen handeln.There are a total of 2 on the underside of the trolley 24 Lifting devices 25 are arranged, each having a controllable holding device 26 on its underside for gripping or grasping the printing end of a printing plate. The holding devices 26 can, for example, be suction devices and / or grippers, in particular also a combination of such devices.

In der Darstellung gemäß Fig. 1 ist erkennbar, daß die Führungsschiene 22 in einer derartigen Höhe oberhalb der Druckwerke der Druckmaschine verläuft, so daß die beiden Hubvorrichtungen 25 mit einer daran befindlichen Druckplatte im angehobenen Zustand oberhalb der Druckwerke verfahren werden können. Insbesondere ist die Höhe der Führungsschiene 22 derartig gewählt, daß der Fahrwagen 24 mit den Hubvorrichtungen 25 über den An- bzw. Ausleger hinaus verfahren werden kann und eine an der Haltevorrichtung 26 befestigte Druckplatte oberhalb einer Person gefahrlos transportierbar ist.1 that the guide rail 22 runs at such a height above the printing units of the printing press, so that the two lifting devices 25 with a printing plate thereon can be moved above the printing units in the raised state. In particular, the height of the guide rail 22 is selected such that the carriage 24 can be moved with the lifting devices 25 beyond the feeder or boom and a pressure plate attached to the holding device 26 can be transported safely above a person.

Die Figuren 3 und 4 zeigen die insgesamt mit 27 gekennzeichnete Transporteinrichtung oberhalb eines Druckwerkes noch einmal im Detail. Die beiden Hubvorrichtungen 25 mit den daran befindlichen Haltevorrichtungen 26 für die Druckplatten sind gemäß diesem Ausführungsbeispiel gleichartig aufgebaut und bestehen aus einem ersten Hubantrieb 28, der über einen Befestigungsarm unterhalb des Fahrwagens 24 angebracht ist und aus einem zweiten Hubantrieb 29 an dem die Haltevorrichtung 26 zum Ergreifen einer Druckplatte angebracht ist.FIGS. 3 and 4 show the transport device, identified overall by 27, above a printing unit once again in detail. The two lifting devices 25 with the holding devices 26 thereon for the pressure plates are constructed in the same way according to this exemplary embodiment and consist of a first lifting drive 28 which is attached via a fastening arm below the carriage 24 and a second lifting drive 29 on which the holding device 26 for gripping a pressure plate is attached.

Der erste Hubantrieb 28 wirkt jeweils mit einer Schiene 30 zusammen, derart, daß diese Schiene 30 nach unten herabgelassen bzw. voll heraufgezogen werden kann. Die beiden Endpositionen der Schiene 30 bezüglich dem ersten Hubantrieb 28 sind in den Figuren 3 und 4 erkennbar.The first lifting drive 28 cooperates with a rail 30 in such a way that this rail 30 can be lowered or pulled up fully. The two end positions of the rail 30 with respect to the first lifting drive 28 can be seen in FIGS. 3 and 4.

Die Schiene 30 hat insbesondere H-förmiges Profil und kann beispielsweise durch entsprechende Rollen und über Friktion oder auch formschlüssig nach Art eines Zahnstangenantriebes mit dem ersten Hubantrieb 28 zusammenwirken. Die Länge der Schiene 30 ist dabei etwas größer gewählt als die maximale Formatlänge der zu verwendenen Druckplatten.The rail 30 has in particular an H-shaped profile and can, for example, by means of appropriate rollers and friction or interact positively in the manner of a rack and pinion drive with the first lifting drive 28. The length of the rail 30 is chosen somewhat larger than the maximum format length of the printing plates to be used.

Entlang der Schiene 30 ist jeweils der zweite Hubantrieb 29 verfahrbar angeordnet, der insbesondere nach dem gleichen Prinzip wie der Hubantrieb 28 mit der Schiene 30 zusammenwirkt. In den Figuren 3 und 4 ist erkennbar, daß der zweite Hubantrieb 29 sich an dem oberen Ende der Schiene 30 befindet, wenn die Schiene 30 durch den ersten Hubantrieb 28 bis in ihre Endstellung nach oben gezogen wurde, also die Schiene 30 durch den ersten Hubantriebs 28 im Bereich ihres unteren Endes erfaßt wird. Die zweite zu realisierende Stellung entspricht der, in welcher der erste Hubantrieb 28 die Schiene 30 voll nach unten herausgefahren hat und der zweite Hubantrieb 29 entlang der Schiene 30 in die untere Endposition verfahren wurde. Hubantriebe 28, 29 sind dabei steuerungstechnisch miteinander verbunden, damit sich die oben beschriebenen Stellungen, nämlich die Grundstellung und die ganz nach unten ausgefahrene Stellung gleichzeitig angefahren werden. Die beiden an dem Fahrwagen 24 angebrachten Hubvorrichtungen 25 stellen somit ein teleskopartiges Hubsystem dar.The second lifting drive 29 is arranged such that it can move along the rail 30, and in particular interacts with the rail 30 according to the same principle as the lifting drive 28. 3 and 4 that the second lifting drive 29 is located at the upper end of the rail 30 when the rail 30 has been pulled up to its end position by the first lifting drive 28, that is to say the rail 30 by the first lifting drive 28 is detected in the area of its lower end. The second position to be realized corresponds to that in which the first lifting drive 28 has moved the rail 30 fully down and the second lifting drive 29 has been moved along the rail 30 into the lower end position. Lift drives 28, 29 are connected to one another in terms of control technology so that the positions described above, namely the basic position and the fully extended position, are approached simultaneously. The two lifting devices 25 attached to the trolley 24 thus represent a telescopic lifting system.

Die Fig. 3 zeigt die erfindungsgemäße Transporteinrichtung 27 oberhalb eines Druckwerkes, bei der die links dargestellte Hubvorrichtung 25 durch entsprechendes Ansteuern des ersten und zweiten Hubantriebes 28, 29 in die untere Endposition verfahren wurde, um dort nach entsprechender Positionierung des Fahrwagens 24 mittels der Haltevorrichtung 26 eine aus dem Spalt zwischen den Führungsblechen 11, 12 herausgeförderte alte Druckplatte zu erfassen. Die Haltevorrichtung 26 an dieser Hubvorrichtung 25 ist also so positioniert, daß das Druckende einer Druckplatte beispielsweise direkt in die geöffneten Greifer der Haltevorrichtung 26 hineingefördert wird. Bei Haltevorrichtung 26 können auch Sensoren vorgesehen sein, die das Vorhandensein einer Druckplatte feststellen und sodann die Greifer zum Erfassen der Druckplatte ansteuern.3 shows the transport device 27 according to the invention above a printing unit, in which the lifting device 25 shown on the left has been moved into the lower end position by correspondingly actuating the first and second lifting drives 28, 29, in order to position the carriage 24 there by means of the holding device 26 to detect an old printing plate conveyed out of the gap between the guide plates 11, 12. The holding device 26 on this lifting device 25 is thus positioned such that the printing end of a printing plate is conveyed, for example, directly into the open grippers of the holding device 26. In the case of the holding device 26, sensors can also be provided which determine the presence of a pressure plate then control the grippers to grasp the pressure plate.

Nachdem die Druckplatte in der Stellung der Hubvorrichtung 25 gemäß Fig. 3 eine alte Druckplatte erfaßt haben und diese Druckplatte nach entsprechendem Rückwärtsdrehen des Plattenzylinders 1 (Fig. 2) und entsprechendem Öffnen der Druckanfang-Spannschiene 3 vom Plattenzylinder 1 freigegeben wurde, kann die linke Hubvorrichtung 25 wieder in ihre Ausgangsstellung zurück gefahren werden, so daß die an der Haltevorrichtung 26 befindliche Druckplatte nach oben gezogen wird. Die linke Hubvorrichtung 25 wird also in die Stellung gemäß Fig. 4 verfahren.After the pressure plate in the position of the lifting device 25 according to FIG. 3 has grasped an old printing plate and this pressure plate has been released from the plate cylinder 1 after the plate cylinder 1 (FIG. 2) has been rotated backwards and opened accordingly, the pressure starting clamping rail 3, the left lifting device can 25 are moved back to their starting position, so that the pressure plate located on the holding device 26 is pulled upwards. The left lifting device 25 is thus moved into the position shown in FIG. 4.

An der in Fig. 3 rechts dargestellten Hubvorrichtung 25, also an den dort vorhandenen Haltevorrichtungen 26 befindet sich bereits eine neue Druckplatte, welche auf den Plattenzylinder 1 des Druckwerkes aufgezogen werden soll.On the lifting device 25 shown on the right in FIG. 3, that is to say on the holding devices 26 present there, there is already a new printing plate which is to be mounted on the plate cylinder 1 of the printing unit.

Der Fahrwagen 24 der Transporteinrichtung 27 wird, wie ein Vergleich der Fig. 3 und 4 zeigt, um ein bestimmtes Stück, entsprechend dem Abstand der beiden Hubvorrichtungen, in Richtung der Führungsschiene 22 verfahren, so daß nun die Haltevorrichtung 26 der rechten Hubvorrichtung 25 sich genau oberhalb des Spaltes zwischen den Führungsblechen 11 und 12 (Fig. 2) befindet. Sodann werden erster und zweiter Hubantrieb 28, 29 angesteuert, damit die Haltevorrichtung 26 der rechten Hubvorrichtung 25 sich langsam absenkt und die neue Druckplatte mit ihrem Druckanfang-Bereich durch den Spalt der Führungsbleche 11, 12 und die an den Plattenzylinder 1 angestellte Leiteinrichtung 21 in die geöffnete Druckanfang-Spannschiene 3 (nach entsprechender Plattenzylinderpositionierung) hineingefördert wird. An der Spannschiene 3 können Sensoren vorgesehen sein, durch die eine korrekte Anlage des Druckanfangs-Bereich der Druckplatte feststellbar ist und woraufhin durch eine Steuerung automatisch das Klemmen der Druckplatte durch Schließen der Spannschiene 3 bewirkt wird.The carriage 24 of the transport device 27 is, as a comparison of FIGS. 3 and 4 shows, a certain distance, corresponding to the distance between the two lifting devices, in the direction of the guide rail 22, so that the holding device 26 of the right lifting device 25 is accurate located above the gap between the guide plates 11 and 12 (Fig. 2). Then the first and second lifting drives 28, 29 are controlled so that the holding device 26 of the right lifting device 25 slowly lowers and the new printing plate with its pressure start area through the gap of the guide plates 11, 12 and the guide device 21 employed on the plate cylinder 1 into the open pressure start clamping rail 3 (after appropriate plate cylinder positioning) is conveyed into it. Sensors can be provided on the tensioning rail 3, by means of which a correct contact of the pressure start area of the pressure plate can be determined and whereupon the pressure plate is automatically clamped by a control by closing the tensioning rail 3.

Nachdem die Druckplatte in die Spannschiene 3 eingeführt und geklemmt wurde, kann die Haltevorrichtung 26 der rechten Hubvorrichtung 25 den Druckende-Bereich der Druckplatte freigeben, woraufhin die Leiteinrichtung 21 vom Plattenzylinder 1 abgeschwenkt und die Andrückrolle 18 (Fig. 2) an den Plattenzylinder angestellt wird. Durch langsames Vorwärtsdrehen des Plattenzylinders 1 wird die neue Druckplatte um dessen Außenumfang aufgezogen, bis das Druckende wie bereits weiter oben stehend genau beschrieben in den Bereich der Druckende-Spannschiene 4 kommt.After the pressure plate has been inserted into the tensioning rail 3 and clamped, the holding device 26 of the right lifting device 25 can release the printing end area of the printing plate, whereupon the guide device 21 is pivoted away from the plate cylinder 1 and the pressure roller 18 (FIG. 2) is set against the plate cylinder . By slowly turning the plate cylinder 1 forward, the new printing plate is drawn around its outer circumference until the printing end comes into the area of the printing end clamping rail 4, as already described above.

Nach dem Freigeben des Druckendes der Druckplatte durch die Haltevorrichtung 26 der linken Hubvorrichtung 25 kann diese wieder in ihre Ausgangsstellung gefahren werden. An der erfindungsgemäßen Transporteinrichtung 27 befindet sich nun an der rechten Hubvorrichtung 25 eine alte Druckplatte. Es wird nun der Antrieb des Fahrwagens 24 angesteuert, so daß die gesamte Transporteinrichtung 27 genau oberhalb eines in Fig. 1 längs dargestellten Druckplattenbehälters 31 zu liegen kommt. Dieser Druckplattenbehälter 31 weist eine Vielzahl nebeneinander liegender und senkrecht nach oben geöffneter Aufnahmefächer für einzelne Druckplatten auf und ist wie in Fig. 1 ebenfalls zu erkennen erhöht angeordnet, so daß die darüber befindliche Transporteinrichtung 27 durch die realisierbaren Hubwege der Hubvorrichtungen 25 eine gebrauchte Druckplatte in ein leeres Fach hinein sowie eine zu entnehmende neue Druckplatte erfassen kann. Der Druckplattenbehälter 31 kann, wie bereits weiter oben stehend angedeutet wurde, selbst ein verfahrbarer Transportbehälter sein und somit einen Teil eines automatischen und insbesondere führerlosen Druckplatten-Logistik-Systems bilden.After the printing end of the printing plate has been released by the holding device 26 of the left lifting device 25, the latter can be moved back into its starting position. An old pressure plate is now located on the right lifting device 25 on the transport device 27 according to the invention. The drive of the trolley 24 is now controlled so that the entire transport device 27 comes to lie exactly above a pressure plate container 31 shown longitudinally in FIG. 1. This pressure plate container 31 has a multiplicity of adjacent and vertically upwardly open receiving compartments for individual printing plates and, as can also be seen in FIG. 1, is arranged in an elevated manner, so that the transport device 27 located above it, due to the feasible lifting paths of the lifting devices 25, a used printing plate into one empty compartment as well as a new printing plate to be removed. As already indicated above, the printing plate container 31 can itself be a movable transport container and thus form part of an automatic and in particular driverless printing plate logistics system.

Wenn, wie anhand der Figuren 3 und 4 beschrieben, die Druckplatte des ersten Druckwerkes der Druckmaschine gewechselt wurde und die Transporteinrichtung 27 die erste gebrauchte Druckplatte in den Druckplattenbehälter 31 abgelegt hat, wird wiederum mittels der in Figur 3 und 4 rechts befindlichen Hubvorrichtung 25 eine neue, für das nächste Druckwerk vorgesehene Druckplatte erfaßt und durch entsprechendes Ansteuern des Antriebs des Fahrwagens 24 die Transporteinrichtung 27 zum nächsten Druckwerk gefahren. Die Transporteinrichtung 27 nimmt dort wiederum eine Stellung gemäß Fig. 3 ein. Der beschriebene Vorgang wiederholt sich.If, as described with reference to FIGS. 3 and 4, the printing plate of the first printing unit of the printing press has been changed and the transport device 27 has placed the first used printing plate in the printing plate container 31, a new lifting device 25 is in turn by means of the lifting device 25 on the right in FIGS , for the next printing unit intended printing plate and by Appropriate control of the drive of the carriage 24 moved the transport device 27 to the next printing unit. The transport device 27 in turn assumes a position according to FIG. 3. The process described is repeated.

In Fig. 5 ist die Aufhängung der erfindungsgemäßen Transporteinrichtung 27 oberhalb der Druckwerke der Druckmaschine noch einmal aus der Blickrichtung des Auslegers dargestellt. Erkennbar ist hier insbesondere, daß die Stützen 23 für die Führungsschiene 22 jeweils an einer Seitengestellwand der Antriebs- und Bedienseite der Druckmaschine befestigt sind. An der in der oberen Endposition befindlichen Haltevorrichtung 26 des zweiten Hubantriebes 29 ist eine Druckplatte 32 dargestellt. Damit insbesondere gebrauchte Druckplatten wegen ihres Hanges zum Einrollen durch die erfindungsgemäße Vorrichtung verwendbar sind, ist um die Druckplatte 32 zusätzlich noch ein Rahmen an jeder Hubvorrichtung 25 angebracht. Dieser Rahmen besteht im wesentlichen aus einer Traverse 33, die etwas breiter ist als das maximale Format der Druckplatte 32. Diese Traverse 33 weist über ihre Breite einen Schlitz auf, durch den hindurch die Druckplatte 32 mittels der Haltevorrichtung 26 erfaßt und befördert werden kann. Die Traverse 33 ist, wie in Verbindung mit den Fig. 3 und 4 zu erkennen, am Ende je einer Führungsstange 34 angebracht und über diese an einer an dem zweiten Hubantrieb 29 angebrachten Traverse 35 aufhängt. Es ist vorgesehen, daß sich diese Traverse 33 beim Herunterfahren der Schiene 30 oberhalb der Führungsbleche 11, 12 am Schutz 6 gemäß Fig. 2 abstützt. Damit die Druckplatten in Richtung Seitenregister exakt zugeführt werden, kann vorgesehen sein, daß die Traverse 33 beim Absetzen auf dem Schutz 6 über miteinander in Kontakt gebrachte Anschlagmittel ausgerichtet wird.
   An den beiden Enden der Traverse 33 ist jeweils eine Führungsstange 34 angebracht, die in der Länge etwa dem maximalen Druckplattenformat entspricht und die über jeweils zwei weitere Bohrungen an den Enden der zweiten Traverse 35 hindurch gesteckt sind und somit die Traverse die Traverse 33 parallel zu dieser Traverse 35 verschiebbar machen. Diese zweite Traverse ist am zweiten Hubantrieb 29 angebracht, an welcher sich auch die Haltevorrichtungen 26 für die Druckplatten befinden.5 shows the suspension of the transport device 27 according to the invention above the printing units of the printing press once again from the direction of view of the delivery arm. It can be seen here in particular that the supports 23 for the guide rail 22 are each fastened to a side frame wall of the drive and operating side of the printing press. A pressure plate 32 is shown on the holding device 26 of the second lifting drive 29 located in the upper end position. So that, in particular, used printing plates can be used for rolling up by the device according to the invention because of their slope, a frame is additionally attached to each lifting device 25 around the printing plate 32. This frame essentially consists of a cross-member 33, which is somewhat wider than the maximum format of the pressure plate 32. This cross-member 33 has a slot across its width, through which the pressure plate 32 can be gripped and conveyed by means of the holding device 26. The cross member 33, as can be seen in connection with FIGS. 3 and 4, is attached to the end of a guide rod 34 and hangs over this to a cross member 35 attached to the second lifting drive 29. It is provided that this crossmember 33 is supported on the guard 6 according to FIG. 2 when the rail 30 is lowered above the guide plates 11, 12. So that the printing plates are fed exactly in the direction of the side register, it can be provided that the cross member 33 is aligned when it is placed on the guard 6 by means of stop means brought into contact with one another.
At the two ends of the crossmember 33, a guide rod 34 is attached, the length of which corresponds approximately to the maximum printing plate format and which are inserted through two further bores at the ends of the second crossmember 35 and thus the crossmember the crossmember 33 parallel to this Truss 35 make it movable. This second traverse is attached to the second lifting drive 29, on which the holding devices 26 for the pressure plates are also located.

Der Vorteil der zuletzt beschriebenen rahmenförmigen Einrichtung, bestehend aus den beiden Traversen 33, 35 sowie den Führungsstangen 34, ist, daß das untere Ende der Druckplatte, also der Druckanfang-Bereich, nicht freihängt sondern durch den in der Traverse 33 angebrachten Spalt geführt ist. Insbesondere eine gebrauchte und entsprechend eingerollte Druckplatte wird im wesentlichen gerade gebogen und ferner wird dadurch verhindert, daß Anfahr- bzw. Stopvorgänge des Fahrwagens 24 ein zu großes Schwingen der alten und neuen Druckplatten bewirken.The advantage of the frame-shaped device described last, consisting of the two cross members 33, 35 and the guide rods 34, is that the lower end of the pressure plate, that is to say the start of the pressure region, does not hang freely but is guided through the gap provided in the cross member 33. In particular, a used and appropriately rolled-up printing plate is bent essentially straight and, furthermore, it prevents the starting and stopping processes of the trolley 24 from causing the old and new printing plates to swing too much.

Die bisher beschriebenen Verfahr- sowie Arbeitsvorgänge werden von einer entsprechend ausgebildeten Steuerung ausgeführt bzw. durch Programmablauf veranlaßt. Die Reihenfolge beim Wechseln der Druckplatten einer Mehrfarbendruckmaschine kann dabei zeitoptimiert erfolgen, so daß die Zeit beim Aufziehen einer neuen Druckplatte zum Heranholen einer weiteren Druckplatte vom Bereitstellungsplatz optimal genutzt wird.The traversing and work processes described so far are carried out by an appropriately trained control system or initiated by a program run. The sequence when changing the printing plates of a multi-color printing machine can be time-optimized, so that the time is optimally used when pulling up a new printing plate to fetch another printing plate from the staging area.

BezugszeichenlisteReference list

11
PlattenzylinderPlate cylinder
22nd
ZylindergrubeCylinder pit
33rd
Spannschiene (Druckanfang DA)Tensioning rail (pressure start DA)
44th
Spannschiene (Druckende DE)Tensioning rail (printing end DE)
55
GummituchzylinderBlanket cylinder
66
Schutzprotection
77
SchwenkachseSwivel axis
88th
BlechprofilSheet profile
99
EinführschieneInsertion rail
1010th
Traversetraverse
1111
FührungsblechGuide plate
1212th
FührungsblechGuide plate
1313
Bürstento brush
1414
Bürstento brush
1515
EinführflächeInsertion surface
1717th
ErfassungsbereichDetection area
1818th
AndrückrollePressure roller
1919th
PneumatikzylinderPneumatic cylinder
2020th
WinkelhebelAngle lever
2121
LeiteinrichtungControl device
2222
FührungsschieneGuide rail
2323
StützenSupport
2424th
FahrwagenTrolley
2525th
HubvorrichtungLifting device
2626
Haltevorrichtung für DruckplatteHolding device for pressure plate
2727
TransporteinrichtungTransport device
2828
erster Hubantriebfirst linear actuator
2929
zweiter Hubantriebsecond linear actuator
3030th
Schienerail
3131
DruckplattenbehälterPressure plate container
3232
Druckplatteprinting plate
3333
Traversetraverse
3434
FührungsstangeGuide rod
3535
zweite Traversesecond traverse

Claims (10)

Vorrichtung zum automatischen Wechseln von Druckplatten bei Bogenoffsetdruckmaschinen mit mehreren Druckwerken, bei denen die Plattenzylinder jeweils dem Druckanfang und dem Druckende zugeordnete Einrichtungen zum fernbetätigbaren Lösen und Befestigen einer Druckplatte aufweisen, und
in jedem Druckwerk dem Plattenzylinder eine schwenkbar an den Plattenzylinder an- und von diesem abstellbar gelagerte Leiteinrichtung zugeordnet ist,
dadurch gekennzeichnet,
daß eine allen Druckwerken zugeordnete, zwischen diesen und einem Druckplattenbehälter (31) für neue und gebrauchte Druckplatten verfahrbare Transporteinrichtung (27) mit Haltevorrichtungen (26) zum Erfassen neuer und gebrauchter Druckplatten vorgesehen ist, mittels der in jedem Druckwerk eine neue Druckplatte über die angeschwenkte Leiteinrichtung (21) dem Plattenzylinder (1) zugeführt und wieder vom Plattenzylinder (1) abgefördert werden kann.Device for automatically changing printing plates in sheet-fed offset printing presses with a plurality of printing units, in which the plate cylinders each have devices assigned to the remote start and end of printing for releasing and fastening a printing plate, and
in each printing unit, the plate cylinder is assigned a guide device which is pivotably attached to the plate cylinder and can be removed from it,
characterized,
that a transport device (27) associated with all printing units and movable between them and a printing plate container (31) for new and used printing plates is provided with holding devices (26) for detecting new and used printing plates, by means of which a new printing plate is provided in each printing unit via the pivoted-on guide device (21) fed to the plate cylinder (1) and removed from the plate cylinder (1) again. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Transporteinrichtung (27) als ein Fahrwagen (24) an einer oberhalb der Druckmaschine angebrachten Führungsschiene (22) aufgehängt ist, und daß die Haltevorrichtung (26) für die Druckplatten an jeweils einer Hubvorrichtung (25) angebracht sind.Device according to claim 1,
characterized,
that the transport device (27) is suspended as a carriage (24) on a guide rail (22) attached above the printing press, and that the holding device (26) for the printing plates are each attached to a lifting device (25). Vorrichtung nach Anspruch 1 und 2,
dadurch gekennzeichnet,
daß die in jedem Druckwerk vorgesehene Leiteinrichtung (21) aus einer um eine Schwenkachse (7) bei dem vor dem Druckwerkszylinder angeordneten Schutz (6) schwenkbar aufgehängten Profil gebildet ist, welches an seinem schwenkbaren Ende eine sich über die Formatbreite des Plattenzylinders (1) erstreckende Einführschiene (9) aufweist, die an den Außenumfang des Plattenzylinders (1) im Bereich des Druckanfanges DA derartig anstellbar ist, so daß über eine zum Plattenzylinder (1) hin gelegene Einführfläche (15) der Einführschiene (9) die Vorderkante der Druckplatte in den geöffneten Erfassungsbereich (17) der Spannschiene (3) einführbar ist.Device according to claims 1 and 2,
characterized,
that the guide device (21) provided in each printing unit is formed from a profile which is pivotably suspended around a pivot axis (7) in the case of the protection (6) arranged in front of the printing unit cylinder and which has a pivot at its pivotable end The insertion rail (9) extends over the format width of the plate cylinder (1) and can be adjusted on the outer circumference of the plate cylinder (1) in the area of the start of printing DA, so that the insertion surface (15) of the insertion rail lies towards the plate cylinder (1) (9) the front edge of the pressure plate can be inserted into the open detection area (17) of the tensioning rail (3). Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß an der Oberseite des Schutzes (6) zwei jeweils einen formatbreiten Spalt bildende Führungsbleche (11, 12) angebracht sind, durch welchen eine an der Haltevorrichtung (26) einer Hubvorrichtung (25) aufgehängte Druckplatte dem Plattenzylinder zuführbar ist und eine von dem Plattenzylinder (1) herausgeförderte Druckplatte mittels einer Haltevorrichtung (26) erfaßbar ist.Device according to claim 3,
characterized,
that two guide plates (11, 12), each forming a format-wide gap, are attached to the top of the protection (6), through which a pressure plate suspended from the holding device (26) of a lifting device (25) can be fed to the plate cylinder and one from the plate cylinder ( 1) conveyed out printing plate can be detected by means of a holding device (26). Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Druckplattenbehälter (31) hinsichtlich der Seitenregisterrichtung in einer Linie mit den Druckwerken der Druckmaschine liegt.Device according to one of the preceding claims,
characterized,
that the printing plate container (31) is in line with the side register direction with the printing units of the printing press. Vorrichtung nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet,
daß die Haltevorrichtungen (26) für die neuen bzw. gebrauchten Druckplatten als pneumatische und/oder mechanische Sauger und/oder Greifer ausgebildet sind.Device according to one of the preceding claims,
characterized,
that the holding devices (26) for the new or used printing plates are designed as pneumatic and / or mechanical suction devices and / or grippers. Vorrichtung nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet,
daß Mittel vorgesehen sind, durch welche eine zuzuführende Druckplatte hinsichtlich der Seitenregisterrichtung ausgerichtet dem Plattenzylinder (1) zugeführt wird und dies insbesondere beim Herablassen einer an der Haltevorrichtung (26) aufgehängten neu zuzuführenden Druckplatte erfolgt, indem zwischen Hub- bzw. Haltevorrichtung (25, 26) und Druckwerk bzw. Schutz (6) formschlüssig zueinander ausgebildete Mittel miteinander in Kontakt gebracht werden.Device according to one of the preceding claims,
characterized,
that means are provided through which a pressure plate to be fed is supplied to the plate cylinder (1) aligned with respect to the side register direction, and this is done in particular when lowering a new pressure plate to be fed which is suspended on the holding device (26) by the lifting or holding device (25, 26 ) and the printing unit or protection (6) can be brought into contact with one another in a form-fitting manner. Vorrichtung nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet,
daß die Hub- und Haltevorrichtungen (25, 26) für die zu- und abzuführenden Druckplatten Mittel aufweisen, durch die bei gebrauchten Druckplatten einem Einrollen entgegengewirkt wird.Device according to one of the preceding claims,
characterized,
that the lifting and holding devices (25, 26) for the pressure plates to be fed in and out have means by which a curling is counteracted in used pressure plates. Vorrichtung nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet,
daß durch eine Steuerung die Reihenfolge der zu wechselnden Druckplatten zeitoptimiert erfolgt.Device according to one of the preceding claims,
characterized,
that the sequence of the printing plates to be changed is time-optimized by a control. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Vorrichtung (26, 27, 31) zum automatischen Wechseln von Druckplatten als ein Teil einer Plattenlogistik für Bogendruckmaschinen in einer Druckerei ausgebildet ist, welche wiederum gesteuert wird von einem Planungs- und Produktionssteuerungssystem für Druckereien.Device according to claim 1,
characterized,
that the device (26, 27, 31) for automatically changing printing plates is designed as part of a plate logistics for sheet-fed printing machines in a printing house, which in turn is controlled by a planning and production control system for printing houses.
EP94102374A 1993-03-25 1994-02-17 Device for changing printing plates automatically in offset sheet printing machines with several printing units Expired - Lifetime EP0623467B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4309658 1993-03-25
DE4309658A DE4309658C1 (en) 1993-03-25 1993-03-25 Device for automatically changing printing plates in sheet-fed offset printing machines with several printing units

Publications (2)

Publication Number Publication Date
EP0623467A1 true EP0623467A1 (en) 1994-11-09
EP0623467B1 EP0623467B1 (en) 1997-04-02

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EP (1) EP0623467B1 (en)
JP (1) JP2948089B2 (en)
AT (1) ATE151015T1 (en)
DE (2) DE4309658C1 (en)

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EP0654349B1 (en) * 1993-11-18 1997-05-28 MAN Roland Druckmaschinen AG Cassette for automatically exchanging printing plates in a printing machine
EP0716921B1 (en) * 1994-12-15 1998-05-27 MAN Roland Druckmaschinen AG Device for changing printing plates
EP1155839A2 (en) 2000-05-17 2001-11-21 Komori Corporation Device for changing a printing plate
EP1155839A3 (en) * 2000-05-17 2006-02-22 Komori Corporation Device for changing a printing plate
EP1193057A1 (en) * 2000-09-28 2002-04-03 Koenig & Bauer Aktiengesellschaft Printing press with production of images on printing plates
EP2006102A2 (en) * 2007-05-25 2008-12-24 manroland AG Device for handling printing plates and web-fed printing presses
EP2006102A3 (en) * 2007-05-25 2011-11-23 manroland AG Device for handling printing plates and web-fed printing presses
CN102632689A (en) * 2012-04-25 2012-08-15 江阴市汇通包装机械有限公司 Direct pressure type pressure preparing device on electronic shaft printing machine
CN102632689B (en) * 2012-04-25 2015-01-14 江阴市汇通包装机械有限公司 Direct pressure type pressure preparing device on electronic shaft printing machine

Also Published As

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DE4309658C1 (en) 1994-10-27
JPH06297686A (en) 1994-10-25
ATE151015T1 (en) 1997-04-15
DE59402273D1 (en) 1997-05-07
US5454317A (en) 1995-10-03
JP2948089B2 (en) 1999-09-13
EP0623467B1 (en) 1997-04-02

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