EP0654349B1 - Cassette for automatically exchanging printing plates in a printing machine - Google Patents

Cassette for automatically exchanging printing plates in a printing machine Download PDF

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Publication number
EP0654349B1
EP0654349B1 EP94117317A EP94117317A EP0654349B1 EP 0654349 B1 EP0654349 B1 EP 0654349B1 EP 94117317 A EP94117317 A EP 94117317A EP 94117317 A EP94117317 A EP 94117317A EP 0654349 B1 EP0654349 B1 EP 0654349B1
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EP
European Patent Office
Prior art keywords
printing
plate
cassette
plate cylinder
guide device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94117317A
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German (de)
French (fr)
Other versions
EP0654349A1 (en
EP0654349B2 (en
Inventor
Bernd Lindner
Nikola Pupic
Helmut Schild
Berthold Seibe
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
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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0654349A1 publication Critical patent/EP0654349A1/en
Publication of EP0654349B1 publication Critical patent/EP0654349B1/en
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Publication of EP0654349B2 publication Critical patent/EP0654349B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1206—Feeding to or removing from the forme cylinder

Definitions

  • the invention relates to a magazine for the automated changing of printing plates of a printing press, in particular sheet-fed offset printing press according to the preamble of claim 1.
  • a printing plate is attached to the plate cylinder by means of a tensioning rail assigned to the start of printing and to the end of printing.
  • the tensioning rails are arranged in a pit of the plate cylinder.
  • the clamp at the end of the print is released and the plate is removed by turning the plate cylinder backwards until the clamp at the start of the print can also be released.
  • a new printing plate is inserted with its front edge into the printing start clamping rail, clamped and then the plate cylinder is rotated in the forward direction until the trailing end of the printing plate can be inserted into the printing end clamping rail and clamped there.
  • the pressure plate is tensioned via the pressure end tensioning rail.
  • a magazine for changing the printing plate which remains in the same position as protection against the printing unit cylinders, in the basic position and in the changing plate position.
  • the magazine In order to put the magazine in an upper position for work on the cylinders, the magazine is articulated in a coupling on two parallel rockers. This articulation is necessary because parts of the magazine which is curved toward the plate cylinder in the lower region are also arranged below the plate cylinder.
  • the magazine When the magazine is started up, it also performs a horizontal movement in the area between the printing units.
  • extensive protective measures are necessary to prevent injury to people.
  • a pivoting guide device which is mounted on and off the plate cylinder and which is designed as a sheet metal profile that stretches across the format width of the printing plate and has an insertion rail formed on the end.
  • the printer grips the old printing plate that has been conveyed out and pulls it out of the opened printing start clamping rail.
  • the guiding device is then placed against the plate cylinder and the printer guides a new printing plate over the guiding device into the print start clamping rail.
  • the guide rail of the guide device results in an automatic threading of the pressure plate leading edge into the detection area of the pressure start clamping rail.
  • an old or new printing plate cannot be saved or made available with this device.
  • This device for automatically changing printing plates in sheet-fed offset printing presses with several printing units consists of a carriage suspended from a guide rail above the printing press along with a transport device with lifting devices.
  • the transport device with the lifting devices can be moved along all printing units of the printing press, so that printing plates can be conveyed from the printing units to a central printing plate container and from this in turn new printing plates can be conveyed to the printing unit provided in each case.
  • DE 4 214 207 C1 discloses a pressure roller that can be adjusted to the plate cylinder and a folding bar that runs parallel to it and can also be adjusted to the plate cylinder.
  • the pressure roller is used in a known manner to under the new pressure plate Clamp the train on the circumference of the plate cylinder.
  • the folding bar known from the cited step serves to bend the trailing printing plate edge around the printing end contour of the plate cylinder. This known device is used to pull the printing plate already inserted in the detection area of a pressure start clamping rail onto the plate cylinder, but not to feed a new printing plate to the plate cylinder.
  • the object of the present invention is therefore to develop a device according to the preamble of claim 1 in such a way that a simple design of a magazine can be carried out without complex Additional pollution results.
  • the magazine for receiving a new and a used pressure plate is formed as a slot in the upper part of the protection and further stops or holding means are provided by which the new or used pressure plate are held against gravity.
  • the printing plates are oriented vertically and immerse about a third or half of their format length through the respective slots in the inside of the protection.
  • a guiding device can be attached to the plate cylinder for the supply of a new printing plate and a further guiding surface for removing a used printing plate.
  • This measure ensures that moving parts which serve to change the printing plate are arranged exclusively within the protection and are moved accordingly, so that no additional protective devices are required.
  • the design according to the invention makes it possible for the protection to assume the same vertical position both in the normal position and in the printing plate changing position, and in particular that no parts are pivoted into the space between adjacent printing units. An operator can therefore remain between the printing units and, in an advantageous embodiment of the invention, a used printing plate conveyed into the magazine can therefore be conveyed out of the print start rail by hand and a new printing plate provided can be inserted into the tensioning rail by hand.
  • An operator can insert the new printing plates on all printing units into the slots provided and on stops Off. This can happen, for example, during the ongoing production of a previous print job. If the printing plates are then to be changed, the operator simply goes from printing unit to printing unit and triggers the printing plate changing process for the respective printing unit by means of a command to be initiated via operating elements.
  • the used pressure plate is automatically carried out by turning the cylinder backwards out of the slot provided in the guard.
  • the intended holding means in the form of a rubber lip grip the pressure plate and the operator now only needs to pull the pressure plate out a little.
  • a marking can be provided on the printing unit, up to which the old printing plate must be pulled out.
  • a control automatically triggers the pivoting of the guide device, whereupon the operator introduces the new printing plate into the opened start of the tensioning rail.
  • register pins attached there which can be queried electrically and which cooperate with the corresponding punchings on the front edge of the printing plate, it is now determined whether the printing plate lies correctly. If the control determines that this is the case, the detection area of the pressure start clamping rail is closed, i.e. the pressure plate is clamped.
  • the control system sends a signal to the main drive of the printing machine so that it rotates forward until the printing plate is completely pulled up.
  • the printing end of the printing plate is inserted into the corresponding tensioning rail, clamped and then tensioned.
  • the control inputs to the organs causing the guide device to be turned on appropriate signal so that the guide device is pivoted back into its rest position.
  • the guide device is placed on and off from the plate cylinder via a linear guide. It is provided according to the invention that the stops on which the new pressure plate to be fed can be placed simultaneously represent the elements of the linear guide.
  • the guide device is only turned on to feed a new pressure plate to the plate cylinder, so that the new pressure plate to be fed comes out of the effective area of the stops and can then be inserted into the open detection area of the pressure start tensioning rail.
  • the guide device is switched off from the plate cylinder both when printing and when executing a used printing plate. In this basic position of the guide device, the magazine designed as protection can be pushed vertically upwards for maintenance purposes. This embodiment of the invention also ensures that the magazine remains in the same vertical position both when printing and when changing the printing plate.
  • the guide device is attached to a folding bar which is known per se and is assigned to a pressure roller which can be set on the plate cylinder.
  • the guide device it is essential that the guide device cannot be pivoted about a pivot axis attached to the guard or the magazine and thus also vertically displaceable or can be moved on corresponding guide means attached to the guard or the magazine.
  • the guide device is pivoted about an axis fixed to the frame, that is to say it is mounted on the plate cylinder and can be removed from it.
  • the particular advantage of this type of attachment of the guide device in connection with the magazine according to the invention is that none additional adjusting means for pivoting the guide device must be provided.
  • the guide device is attached when it is attached to the folding bar, which is known per se and is assigned to a pressure roller, by means of the adjusting means assigned to this device.
  • the new printing plate to be supplied placed on the stops is removed from the stops by the adjustment process from the basic position and can thus be inserted into the open detection area of the pressure start tensioning rail.
  • Fig. 1 shows a section of the part of a printing unit of a printing press in series. Between the two side frame walls of this printing unit, not shown, a plate cylinder 1 is mounted, which in a cylinder pit 2 has a tensioning rail 3, 4 assigned to the printing start DA and the printing end DE.
  • a protection 6 (not shown) is slidably arranged over a guide rail (not shown) attached to a side frame wall of the printing unit, which is in a basic position according to FIG. 1 during printing operation.
  • This protection 6 can, as indicated by the arrow, be pushed up.
  • the protection 6 extends across the width of the printing unit.
  • a pivot axis 7 is attached as a swivel joint, on which the guide device designed as a sheet metal profile 8 is suspended.
  • the sheet profile 8 has a slight curvature and has the format width of the plate cylinder 1.
  • an insertion rail 9 is attached or created by a corresponding profile, which by pivoting the sheet profile 8 on the outer circumference of the plate cylinder 1 - or can be swung away from it (arrow).
  • a guide plate 11 and 12 is attached, which have a length that is slightly larger than the maximum printing plate format to be processed.
  • brushes 14 are arranged in a plurality of spaced-apart strips, over the bristles of which a printing plate to be supplied is supported with its printing side.
  • the insertion rail 9 at the pivotable end of the sheet metal profile 8 has the profile shown in FIG. 1 and has an insertion surface 15 facing the plate cylinder 1, which lies approximately at the height of the top of the brushes 14.
  • a further guide plate 13 is arranged in the area of the brushes 14, so that these produce a total of 3 guide plates 11, 12, 13, two slots 21, 22.
  • the slots 21, 22, like the guide plates 11, 12, 13, have a width which is somewhat larger than the maximum printing plate format to be processed.
  • the slot 21 serves for receiving and feeding a new printing plate, the slot 22 in connection with the guide plates 11, 12 for leading out a used printing plate.
  • Fig. 1 is the basic position of the sheet profile 8, that is Basic position of the control device is shown in dashed lines.
  • the guide device is in this position when printing, but this position is also used when leading out a used printing plate.
  • a pneumatic cylinder 19 is preferably attached to both side frame walls of the printing machine, which causes the corresponding pivoting of the sheet profile 8 via a respective angle lever 20 mounted on the frame and a driving pin (not shown) attached to it .
  • the pneumatic cylinders 19 can also be mounted directly in the protection 6 or articulated directly on the sheet profile 8.
  • a guide surface 18 which can be pivoted together with the plate profile 8 and which likewise has a slightly curved shape.
  • This can be a one-piece guide surface 18 or a plurality of pivotally suspended tongues spaced apart from one another.
  • the basic position of the guide surface 18 is shown in dashed lines. As will be explained, the used printing plate is conveyed out in this basic position.
  • the guide surface 18 can also be made of sheet metal or plastic and is connected to the sheet profile 8 via webs at both ends of the profile.
  • Two spaced-apart stops 16 are attached to the protection 6 and, in the basic position of the sheet metal profile 8, project through corresponding openings (not shown) in the sheet metal profile 8.
  • a pressure plate is placed on these stops 16 through the slot 21.
  • the guide surface 18 assumes the position shown in dashed lines.
  • the rubber lip 23 which extends over the width of the slot 22 and is slightly inclined upwards as a holding means.
  • the plate cylinder 1 is turned back until it assumes the position shown in FIG. 1.
  • the tensioning rail 3 assigned to the start of pressure DA is opened so that the used printing plate which is pushed into the gap 22 by the flexible rubber lip 23 can be pulled out of the detection area 17 of the tensioning rail 3 by hand.
  • the rubber lip 23 acts as a holding means which acts in an inhibiting manner against the transport direction of the used printing plate.
  • the rubber lip 23 is arranged above the gap 22 at one edge and we bent like a lid through the used pressure plate.
  • an inlet protection 24 can also take on a further guiding function.
  • a control queries the register pins, not shown and attached to the plate cylinder 1 in an electrically insulated manner and thus determines whether the used printing plate is out of the detection area 17 of the opened one Clamping rail 3 was pulled out. If this is the case, the control unit initiates the pivoting of the sheet profile 8 with the insertion rail 9 via the pneumatic cylinders 19. As a result, the guide surface 18 is also moved into the position shown in FIG. 1. In the basic position of the sheet metal profile 8, the new pressure plate provided was placed on the stops 16. The stops 16 are dimensioned in length such that they no longer hinder the path of the pressure plate to the plate cylinder 1 when the sheet profile 8 is in the engaged state. The pressure plate is held only by friction between the brushes 14 and the guide surface 18.
  • the new printing plate can now be pushed into the opened detection area 17 of the printing start DA tensioning rail 3.
  • the plate cylinder 1 has previously been moved into the corresponding position by the control.
  • the control then again prompts for the correct position of the printing plate on the register pins, whereupon the corresponding actuating means for closing the detection area 17 are activated, that is to say the printing plate is clamped at the beginning of its printing.
  • the side of the insertion rail 9 facing the plate cylinder 1 represents an insertion surface 15 which essentially forms a funnel-shaped path for the front edge of the new printing plate into the open detection area 17 of the tensioning rail 3.
  • the clamping of the printing plate is initiated, for which purpose the corresponding actuating means which close the detection area 17 are actuated.
  • the register pins are then queried again, which is used to determine whether a possible shift has occurred when the printing plate was clamped.
  • the sheet metal profile 8 is returned to the by actuating the pneumatic cylinder 19 Basic position pivoted and the plate cylinder 1 rotated forward until the printing end of the printing plate is inserted into the clamping rail 4 assigned to the printing end DE, clamped and then tensioned.
  • the printing plate change process is thus finished and the actual printing process can begin.
  • the used in the slot 22, used and held by the rubber lip 23 printing plate can now be removed during the printing process and a new printing plate intended for the next print job can be inserted into the slot 21 and placed on the stops 16.
  • the guide plate 11 with the brushes 14 is drawn down in the form of a rigid, slightly curved contour so far into the protection 6 forming the magazine, so that the vertical travel of the protection 6 is not hindered.
  • two stops 16 in the form of round bolts are mounted at a distance from one another with respect to the axis of the plate cylinder. As shown in Fig. 2, these have a predominantly horizontal orientation, slightly upward.
  • the guide device 8, 9 can be displaced linearly by means of bearing means (not shown).
  • the bearing means can be, for example, ball roller bushings.
  • the stops 16 thus form a linear guide for the guide device 8, 9.
  • the guide device 8, 9 is shown in its basic position, that is to say turned off from the plate cylinder. In this position, the guard 6 forming the magazine can be pushed vertically upward, a used printing plate can be removed from the plate cylinder 1 via the guide device 18, this being conveyed into the gap 22, and the guide device 8, 9 also takes place in this position the printing company. After a new pressure plate to be fed through the gap 21 on the guide plate 11 is parked past on the stops 16, the guide device 8, 9 can be placed on the plate cylinder 1 after removal of a used printing plate. This is done by means not shown here. The guide device 8, 9 is thus shifted from its basic position parallel to itself into the position shown in dashed lines in FIG. 2 and adjusted to the plate cylinder 1. As shown in FIG. 2, the guide device 8, 9 has the same profile and brushes 14 as the pivotable end of the guide device 8, 9 shown in FIG. 1 Area for inserting a new pressure plate into the open detection area 17 of the pressure start clamping rail 3.
  • the stops 16 which form the linear guide for the guide device 8, 9 are passed through corresponding openings in the guide device 8, 9 and dimensioned such that there is on the one hand no obstruction with regard to the vertical displaceability of the guard 6 forming the magazine and furthermore in that by placing the guide device 8, 9 on the plate cylinder 1, the front edge of the new printing plate comes out of its area of influence, that is to say the new printing plate can be introduced into the detection area 17.
  • Disruptive parts can also be provided, for example pivoting the inlet protection 24 for the vertical displacement of the protection 6.
  • FIG. 3 shows a further preferred embodiment of the invention.
  • the guide device 8, 9 can be pivoted here about an axis fixed to the frame and running parallel to the plate cylinder 1.
  • the guide plate 11 with the brushes 14 is essentially rigid straight strip pulled down inside the protection 6 forming the magazine.
  • the stops 16 are attached to the guard 6, for example in the form of sheet metal tabs. A new printing plate inserted into the slot 21 can be placed on this.
  • FIG 3 shows a pressure roller of known type which can be pivoted to the plate cylinder 1 by means of indicated bearing levers.
  • This pressure roller 25 serves to pull up a new pressure plate to be fed around the outer circumference of the plate cylinder 1 and consequently has its format width.
  • the bearing levers are attached to both ends of the pressure roller 25.
  • a cup-shaped profiled folding bar 26 is arranged pivotably about the axis of rotation of the pressure roller 25. As is known, this serves to bend the trailing end of a printing plate around the contour of the printing end DE.
  • the guide device 8, 9 as a wide and Metal rail bent by two obtuse angles.
  • the guide device 8, 9 is attached to the part of the folding strip 26 which faces the plate cylinder 1.
  • Fig. 3 with a the basic position of the guide device 8, 9 and thus the basic position of the pressure roller 25 and the folding bar 26 is shown.
  • the guide device 8, 9 attached to the folding bar 26 thus assumes the position b shown in broken lines.
  • the pressure roller 25 employed on the plate cylinder 1 is also shown in broken lines.
  • the length of the guide device 8, 9 attached to the folding bar 26 is such that a new pressure plate inserted through the slot 21 and placed on the stops 16 is not hindered.
  • the pressure roller 25 and the folding bar 26 are put down again by the plate cylinder and the position according to FIG. 3 is approached. Then the pressure roller 25 is placed on the actuating means on the plate cylinder 1, wherein stop means prevent the pressure roller 25 from falling into the cylinder pit 2.
  • the guide device 8, 9 is thus pivoted from position a to position b.
  • the folding bar 26 is set and thus the pivoting of the guide device 8, 9 into the printing plate feed position, ie into position c.
  • the guide device 8, 9 is shaped such that a part of the sheet profile nestles against the top of the front tensioning rail 3 and thus the middle section of the guide device 8, 9, the so-called insertion rail 9, with the side facing the plate cylinder 1 forms the insertion surface 15 for the new printing plate to be fed.
  • the pressure plate placed on the stops 16 was removed from them and can now be inserted into the detection area 17 by hand.
  • the guide device 8, 9 So that the pivoting of the guide device 8, 9 is possible via the folding bar 26 with simultaneous removal of the new pressure plate from the stops 16, the guide device 8, 9 has corresponding recesses in the region of the pivotable end, so that pivoting by the stops 16 is not hindered is.
  • the folding bar 26 is also associated with stop means, not shown, which can be attached to the guide device 8, 9 and which provide support on the upper side of the tensioning rail 3 or the bearer rings of the plate cylinder 1.
  • the guide surfaces 18 are in particular designed as flexible plastic tongues which are axially spaced apart and are attached to the guide plate 11.

Landscapes

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

Abstract

A magazine for the automated changing of printing plates of a sheet-fed offset printing machine. The magazine includes a guiding apparatus which can be put into place on the plate cylinder for purposes of conveying used printing plates out of the plate cylinder and for feeding new printing plates to the cylinder. The guiding apparatus may be formed by a sheet-metal profile. Provision is made of further guiding surfaces and a holder so that the used printing plate may be locked by the holder. An operator then only need pull the plate a short distance out of the gripping region of a leading edge clamping rail. Stops are provided for a printing plate so that the new printing plate can be deposited on the stops. By virtue of putting the guiding apparatus into place, the new printing plate is shifted toward the plate cylinder and can be fed into the front clamping rail by the operator.

Description

Die Erfindung betrifft ein Magazin für das automatisierte Wechseln von Druckplatten einer Druckmaschine, insbesondere Bogenoffsetdruckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a magazine for the automated changing of printing plates of a printing press, in particular sheet-fed offset printing press according to the preamble of claim 1.

Bei Bogenoffsetdruckmaschinen wird eine Druckplatte auf dem Plattenzylinder mittels einer dem Druckanfang und einer dem Druckende zugeordneten Spannschiene befestigt. Die Spannschienen sind dabei in einer Grube des Plattenzylinders angeordnet. Zum Wechseln einer Druckplatte wird zunächst die Klemmung am Druckende gelöst und die Druckplatte durch Rückwärtsdrehen des Plattenzylinders von diesem abgefördert, bis daraufhin die Klemmung am Druckanfang ebenfalls gelöst werden kann. Eine neue Druckplatte wird mit ihrer Vorderkante in die Druckanfang-Spannschiene eingelegt, geklemmt und daraufhin der Plattenzylinder in Vorwärtsrichtung gedreht, bis das nachlaufende Ende der Druckplatte in die Druckende-Spannschiene eingefügt und dort geklemmt werden kann. Es erfolgt das Spannen der Druckplatte über die Druckende-Spannschiene.In sheetfed offset printing machines, a printing plate is attached to the plate cylinder by means of a tensioning rail assigned to the start of printing and to the end of printing. The tensioning rails are arranged in a pit of the plate cylinder. To change a printing plate, the clamp at the end of the print is released and the plate is removed by turning the plate cylinder backwards until the clamp at the start of the print can also be released. A new printing plate is inserted with its front edge into the printing start clamping rail, clamped and then the plate cylinder is rotated in the forward direction until the trailing end of the printing plate can be inserted into the printing end clamping rail and clamped there. The pressure plate is tensioned via the pressure end tensioning rail.

Bei herkömmlichen Druckmaschinen werden die oben beschriebenen Vorgänge durch den Drucker ausgeführt und sind entsprechend zeitaufwendig. Zur Rüstzeitverkürzung sind in jüngerer Zeit sogenannte vollautomatische Druckplattenwechselsysteme bekannt geworden, bei denen die gebrauchte Druckplatte vom Plattenzylinder in ein Magazin und die neue zuzuführende Druckplatte von eben diesem Magazin auf den Plattenzylinder aufgebracht wird. Aus der EP 0 530 577 A1 ist ein Magazin für den automatischen Druckplattenwechsel bekannt, welches in der Normalposition als Schutz vor dem Druckwerk dient und welches vertikal verfahrbar sowie um eine horizontale Achse verschwenkbar ist. Zu Servicezwecken kann dieses Magazin in eine oberste Position verschoben werden. Für den Druckplattenwechsel wird das Magazin zunächst ein Stück nach oben verschoben und dann an den Plattenzylinder angeschwenkt. Dadurch entsteht sowohl unterhalb des Magazins sowie darüber jeweils ein Spalt, der aus Gründen der Arbeitssicherheit mit zusätzlichen Verschutzungsmitteln abzusichern ist. Ferner schwenkt das Magazin mit seinem oberen Ende in den Raum zwischen den Druckwerken. Hier ist daher durch weitere aufwendige Schutzmaßnahmen zu gewährleisten, daß keine Person sich zwischen den Druckwerken befindet bzw. daß dadurch keine Verletzungsgefahr besteht. Auch besteht Verletzungsgefahr beim Zurückschwenken des Magazins in die Vertikalposition, da hier die Kanten von Magazin und Druckwerk wie die Teile einer Schere zusammenwirken. Die aufgezählte Vielzahl von zusätzlich nötigen Verschutzungsmaßnahmen ist als sehr nachteilig anzusehen.In conventional printing presses, the operations described above are performed by the printer and are accordingly time consuming. To shorten makeready times, so-called fully automatic printing plate changing systems have recently become known, in which the used printing plate is applied from the plate cylinder to a magazine and the new printing plate to be fed is applied from this magazine to the plate cylinder. From EP 0 530 577 A1 a magazine for the automatic printing plate change is known, which in the normal position serves as protection against the printing unit and which can be moved vertically and pivoted about a horizontal axis. This magazine can be moved to a top position for service purposes. To change the printing plate, the magazine is first moved up a little and then swiveled onto the plate cylinder. This creates a gap both below the magazine and above it, which must be protected with additional contaminants for occupational safety. Furthermore, the magazine swings with its upper end into the space between the printing units. It is therefore necessary to ensure that there are no people between the printing units or that there is no risk of injury as a result of further complex protective measures. There is also a risk of injury when the magazine swings back into the vertical position, since here the edges of the magazine and printing unit work together like the parts of a pair of scissors. The enumerated number of additional necessary protective measures can be regarded as very disadvantageous.

Aus der DE 3 940 796 C2 ist ein Magazin für den Druckplattenwechsel bekannt, welches als Schutz vor den Druckwerkszylindern, in der Grundstellung und in der Druckplattenwechselstellung in der gleichen Position verbleibt. Um das Magazin für Arbeiten an den Zylindern in eine obere Stellung zu verbringen, ist das Magazin nach Art einer Koppel an zwei Parallel schwingen angelenkt. Diese Anlenkung ist nötig, da Teile des im unteren Bereich zum Plattenzylinder hin gekrümmt verlaufenden Magazines auch in unterhalb des Plattenzylinders angeordnet sind. Beim Hochfahren des Magazines führt dieses somit auch eine horizontale Bewegung in den Bereich zwischen den Druckwerken aus. Auch hier sind aufwendige Schutzmaßnahmen nötig, um Verletzungsmöglichkeiten für Personen zu verhindern.From DE 3 940 796 C2 a magazine for changing the printing plate is known, which remains in the same position as protection against the printing unit cylinders, in the basic position and in the changing plate position. In order to put the magazine in an upper position for work on the cylinders, the magazine is articulated in a coupling on two parallel rockers. This articulation is necessary because parts of the magazine which is curved toward the plate cylinder in the lower region are also arranged below the plate cylinder. When the magazine is started up, it also performs a horizontal movement in the area between the printing units. Here too, extensive protective measures are necessary to prevent injury to people.

Eine halbautomatische Druckplattenwechselvorrichtung stellt das Druckplatteneinzugssystem PPL (Power Plate Loading) der MAN Roland Druckmaschinen AG dar, welches derzeit an der R 700 im Einsatz ist. Bei dieser in der DE-Zeitschrift Druckwelt 4/25.02.1993,
Seite 24ff, aufgezeigten und ebenfalls in der nicht vorveröffentlichten EP 0 570 702 A1 (Artikel 54 (3) EPÜ) beschriebenen Einrichtung muß der Drucker lediglich eine vom Plattenzylinder durch einen Schlitz im Schiebeschutz herausgeförderte Druckplatte entnehmen und eine neue zuzuführende Druckplatte durch den gleichen Schlitz im Schiebeschutz dem Plattenzylinder zuführen. In dem pneumatisch bewegbaren Schiebeschutz vor den Druckwerkszylindern ist dazu eine schwenkbar und an den Plattenzylinder an- und abstellbar gelagerte Leiteinrichtung vorgesehen, welche als sich über die Formatbreite der Druckplatte ersteckendes Blechprofil mit einem an dem Ende angeformten Einführschiene ausgebildet ist. Bei dieser Einrichtung ergreift der Drucker die herausgeförderte alte Druckplatte und zieht sie aus der geöffneten Druckanfangs-Spannschiene. Sodann wird die Leiteinrichtung an den Plattenzylinder angestellt und der Drucker führt eine neue Druckplatte über die Leiteinrichtung in die Druckanfangs-Spannschiene. Durch die Einführschiene der Leiteinrichtung ergibt sich ein selbsttätiges Einfädeln der Druckplattenvorderkante in den Erfassungsbereich der Druckanfangs-Spannschiene. Eine alte bzw. neue Druckplatte kann mit dieser Einrichtung aber nicht gespeichert bzw. bereitgestellt werden.The PPL (Power Plate Loading) system from MAN Roland Druckmaschinen AG, which is currently in use on the R 700, is a semi-automatic printing plate changing device. In this in the DE magazine Druckwelt 4 / 25.02.1993,
Page 24ff, shown and also in the not The device described in the previously published EP 0 570 702 A1 (Article 54 (3) EPC) only has to remove a printing plate which is conveyed out of the plate cylinder through a slot in the sliding protection and feed a new printing plate to the plate cylinder through the same slot in the sliding protection. For this purpose, in the pneumatically movable sliding protection in front of the printing unit cylinders, there is a pivoting guide device which is mounted on and off the plate cylinder and which is designed as a sheet metal profile that stretches across the format width of the printing plate and has an insertion rail formed on the end. With this device, the printer grips the old printing plate that has been conveyed out and pulls it out of the opened printing start clamping rail. The guiding device is then placed against the plate cylinder and the printer guides a new printing plate over the guiding device into the print start clamping rail. The guide rail of the guide device results in an automatic threading of the pressure plate leading edge into the detection area of the pressure start clamping rail. However, an old or new printing plate cannot be saved or made available with this device.

Ebenfalls eine an den Plattenzylinder an- und von diesem abstellbar gelagerte Leiteinrichtung nebst Einführschiene beschreibt ebenfalls die nicht vorveröffentlichte EP 0 623 467 A1 (Artikel 54 (3) EPÜ). Diese Vorrichtung zum automatischen Wechseln von Druckplatten bei Bogenoffsetdruckmaschinen mit mehreren Druckwerken besteht dabei aus einem oberhalb der Druckmaschine an einer Führungsschiene aufgehängten Fahrwagen nebst Transporteinrichtung mit Hubvorrichtungen. Die Transporteinrichtung mit den Hubvorrichtungen ist entlang aller Druckwerke der Druckmaschine verfahrbar, so daß Druckplatten von den Druckwerken zu einem zentralen Druckplattenbehälter und von diesem wiederum neue Druckplatten zu dem jeweils vorgesehenen Druckwerk förderbar sind.Likewise, a guide device mounted on the plate cylinder, which can be removed from it, together with an insertion rail, is also described in the unpublished EP 0 623 467 A1 (Article 54 (3) EPC). This device for automatically changing printing plates in sheet-fed offset printing presses with several printing units consists of a carriage suspended from a guide rail above the printing press along with a transport device with lifting devices. The transport device with the lifting devices can be moved along all printing units of the printing press, so that printing plates can be conveyed from the printing units to a central printing plate container and from this in turn new printing plates can be conveyed to the printing unit provided in each case.

Aus der DE 4 214 207 C1 ist eine an den Plattenzylinder anstellbare Andrückrolle sowie eine parallel dazu verlaufende, ebenfalls an den Plattenzylinder anstellbare Abkantleiste bekannt. Die Andrückrolle dient in bekannter Weise dazu, die neue Druckplatte unter Zug auf den Plattenzylinderumfang aufzuspannen. Die aus der zitierten Schritt bekannte Abkantleiste dient dem Umbiegen der nachlaufenden Druckplattenkante um die Drukkende-Kontur des Plattenzylinders. Diese vorbekannte Einrichtung dient dem Aufziehen von bereits in dem Erfassungsbereich einer Druckanfangs-Spannschiene eingeführten Druckplatte auf den Plattenzylinder, nicht jedoch dem Zuführen einer neuer Druckplatte zum Plattenzylinder.DE 4 214 207 C1 discloses a pressure roller that can be adjusted to the plate cylinder and a folding bar that runs parallel to it and can also be adjusted to the plate cylinder. The pressure roller is used in a known manner to under the new pressure plate Clamp the train on the circumference of the plate cylinder. The folding bar known from the cited step serves to bend the trailing printing plate edge around the printing end contour of the plate cylinder. This known device is used to pull the printing plate already inserted in the detection area of a pressure start clamping rail onto the plate cylinder, but not to feed a new printing plate to the plate cylinder.

Aufgabe der vorliegenden Erfindung ist es somit, eine Vorrichtung gemäß dem Oberbegriff von Anspruch 1 derartig weiterzubilden, so daß sich eine einfache Ausführung eines Magazins ohne aufwendige Zusatzverschutzungen ergibt.The object of the present invention is therefore to develop a device according to the preamble of claim 1 in such a way that a simple design of a magazine can be carried out without complex Additional pollution results.

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

Gemäß einer vorteilhaften Weiterführung der Erfindung ist das Magazin zur Aufnahme einer neuen sowie einer gebrauchten Druckplatte als jeweils ein Schlitz im Oberteil des Schutzes gebildet und ferner sind Anschläge bzw. Haltemittel vorgesehen, durch die die neue bzw. gebrauchte Druckplatte entgegen der Schwerkraft gehalten werden. Die Druckplatten sind dabei vertikal orientiert und tauchen etwa ein Drittel oder zur Hälfte ihrer Formatlänge durch die jeweiligen Schlitze in die Innenseite des Schutzes ein.According to an advantageous embodiment of the invention, the magazine for receiving a new and a used pressure plate is formed as a slot in the upper part of the protection and further stops or holding means are provided by which the new or used pressure plate are held against gravity. The printing plates are oriented vertically and immerse about a third or half of their format length through the respective slots in the inside of the protection.

Im Schutz und im Anschluß an die das Magazin dargestellten Schlitze ist eine an den Plattenzylinder anstellbare Leiteinrichtung für die Zufuhr einer neuer Druckplatte sowie eine weitere Leitfläche zum Abführen einer gebrauchten Druckplatte angebracht. Durch diese Maßnahme ist gewährleistet, daß bewegliche Teile, welche dem Druckplattenwechsel dienen ausschließlich innerhalb des Schutzes angeordnet und entsprechend bewegt werden, also keine zusätzlichen Schutzvorrichtungen nötig sind. Ferner ist es durch die erfindungsgemäße Ausbildung möglich, daß der Schutz sowohl in Normalposition als auch in der Druckplattenwechselposition die gleiche vertikale Position einnimmt und insbesondere keine Teile in den Raum zwischen benachbarte Druckwerke geschwenkt werden. Eine Bedienperson kann also zwischen den Druckwerken verbleiben und bei einer vorteilhaften Ausführungsform der Erfindung kann daher eine in das Magazin hereingeförderte gebrauchte Druckplatte von Hand aus der Druckanfang-Schiene herausgefördert und eine bereitgestellte neue Druckplatte von Hand in die Spannschiene eingeführt werden.In the protection and in connection with the slots shown in the magazine, a guiding device can be attached to the plate cylinder for the supply of a new printing plate and a further guiding surface for removing a used printing plate. This measure ensures that moving parts which serve to change the printing plate are arranged exclusively within the protection and are moved accordingly, so that no additional protective devices are required. Furthermore, the design according to the invention makes it possible for the protection to assume the same vertical position both in the normal position and in the printing plate changing position, and in particular that no parts are pivoted into the space between adjacent printing units. An operator can therefore remain between the printing units and, in an advantageous embodiment of the invention, a used printing plate conveyed into the magazine can therefore be conveyed out of the print start rail by hand and a new printing plate provided can be inserted into the tensioning rail by hand.

Eine Bedienperson kann die neuen Druckplatten an allen Druckwerken in die dafür vorgesehenen Schlitze einführen und auf Anschlägen abstellen. Dies kann beispielsweise noch während der laufenden Produktion eines vorhergehenden Druckauftrages geschehen. Wenn dann die Druckplatten gewechselt werden sollen, geht die Bedienperson einfach von Druckwerk zu Druckwerk und löst durch ein über Bedienelemente einzuleitendes Kommando den Druckplattenwechselvorgang für das jeweilige Druckwerk aus. Die gebrauchte Druckplatte wird automatisch durch Rückwärtsdrehen des Zylinders aus den in dem dafür vorgesehenen Schlitz im Schutz ausgeführt. Die vorgesehenen Haltemittel in Form einer Gummilippe erfassen die Druckplatte und die Bedienperson braucht nun lediglich die Druckplatte ein Stück weit herauszuziehen. Am Druckwerk kann eine Markierung vorgesehen sein, bis zu welcher das Herausziehen der alten Druckplatte zu vollziehen ist.An operator can insert the new printing plates on all printing units into the slots provided and on stops Off. This can happen, for example, during the ongoing production of a previous print job. If the printing plates are then to be changed, the operator simply goes from printing unit to printing unit and triggers the printing plate changing process for the respective printing unit by means of a command to be initiated via operating elements. The used pressure plate is automatically carried out by turning the cylinder backwards out of the slot provided in the guard. The intended holding means in the form of a rubber lip grip the pressure plate and the operator now only needs to pull the pressure plate out a little. A marking can be provided on the printing unit, up to which the old printing plate must be pulled out.

Nachdem die gebrauchte Druckplatte ein Stück weit aus dem Schlitz herausgezogen wurde und weiterhin durch die Gummilippe in diesem Schlitz gehalten wird, löst eine Steuerung automatisch das Anschwenken der Leiteinrichtung aus, woraufhin die Bedienperson die neue Druckplatte in die geöffnete Druckanfang-Spannschiene einführt. Durch dort angebrachte, elektrisch abfragbare und mit den entsprechenden Stanzungen an der Druckplattenvorderkante zusammenwirkende Registerstifte wird nun festgestellt, ob die Druckplatte korrekt anliegt. Stellt die Steuerung fest, daß dies der Fall ist, so wird der Erfassungsbereich der Druckanfang-Spannschiene geschlossen, d.h. die Druckplatte wird geklemmt.After the used printing plate has been pulled out of the slot a little and is still held in this slot by the rubber lip, a control automatically triggers the pivoting of the guide device, whereupon the operator introduces the new printing plate into the opened start of the tensioning rail. By means of register pins attached there, which can be queried electrically and which cooperate with the corresponding punchings on the front edge of the printing plate, it is now determined whether the printing plate lies correctly. If the control determines that this is the case, the detection area of the pressure start clamping rail is closed, i.e. the pressure plate is clamped.

Ist durch die Steuerung festgestellt worden, daß nach dem Klemmvorgang die Druckplatte immer noch ein registergerechten Sitz hat, so gibt die Steuerung an den Hauptantrieb der Druckmaschine ein Signal, so daß dieser sich soweit vorwärtsdreht, bis die Druckplatte vollständig aufgezogen ist. Das Druckende der Druckplatte wird in die entsprechende Spannschiene eingeführt, geklemmt und sodann erfolgt das Spannen. Bevor der Plattenzylinder zum Aufziehen der neuen Druckplatte in Drehung versetzt wird, gibt die Steuerung an die das Anstellen der Leiteinrichtung bewirkende Organe ein entsprechendes Signal, so daß die Leiteinrichtung wieder in ihre Ruhestellung zurück geschwenkt wird.If it has been determined by the control system that after the clamping process the printing plate still has a register-correct fit, the control system sends a signal to the main drive of the printing machine so that it rotates forward until the printing plate is completely pulled up. The printing end of the printing plate is inserted into the corresponding tensioning rail, clamped and then tensioned. Before the plate cylinder is rotated in order to pull up the new printing plate, the control inputs to the organs causing the guide device to be turned on appropriate signal so that the guide device is pivoted back into its rest position.

Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung wird die Leiteinrichtung über eine Linearführung an dem Plattenzylinder an und von diesem wieder abgestellt. Erfindungsgemäß ist dabei vorgesehen, daß die Anschläge, auf welchen die neue, zuzuführende Druckplatte abstellbar ist gleichzeitig die Elemente der Linearführung darstellen. Auch bei dieser bevorzugten Variante wird die Leiteinrichtung lediglich zum Zuführen einer neuen Druckplatte an den Plattenzylinder angestellt, so daß die neue, zuzuführende Druckplatte aus dem Wirkbereich der Anschläge geraten und daraufhin in den geöffneten Erfassungsbereich der Druckanfang-Spannschiene eingeführt werden kann. Sowohl beim Drucken als auch beim Ausführen einer gebrauchten Druckplatte wird die Leiteinrichtung vom Plattenzylinder abgestellt. In dieser Grundstellung der Leiteinrichtung kann das als Schutz ausgebildete Magazin zu Wartungszwecken vertikal nach oben geschoben werden. Auch diese Ausführungsform der Erfindung gewährleistet, daß das Magazin sowohl beim Drucken als auch beim Druckplattenwechsel in der gleichen vertikalen Position verbleibt.According to a further preferred embodiment of the invention, the guide device is placed on and off from the plate cylinder via a linear guide. It is provided according to the invention that the stops on which the new pressure plate to be fed can be placed simultaneously represent the elements of the linear guide. In this preferred variant, too, the guide device is only turned on to feed a new pressure plate to the plate cylinder, so that the new pressure plate to be fed comes out of the effective area of the stops and can then be inserted into the open detection area of the pressure start tensioning rail. The guide device is switched off from the plate cylinder both when printing and when executing a used printing plate. In this basic position of the guide device, the magazine designed as protection can be pushed vertically upwards for maintenance purposes. This embodiment of the invention also ensures that the magazine remains in the same vertical position both when printing and when changing the printing plate.

In einer weiteren, sehr vorteilhaft sich gestaltenen Ausführungsform der Erfindung ist vorgesehen die Leiteinrichtung an einer an sich bekannten, einer an den Plattenzylinder anstellbaren Andrückrolle zugeordneten Abkantleiste zu befestigen. Bei dieser Ausführungsform ist dabei wesentlich, daß die Leiteinrichtung nicht um eine am Schutz bzw. dem Magazin angebrachte und somit auch vertikal verfahrbaren Schwenkachse verschwenkbar bzw. an entsprechenden, am Schutz bzw. dem Magazin angebrachten Führungsmitteln verfahrbar ist. Bei dieser Variante ist explizit vorgesehen, die Leiteinrichtung um eine gestellfeste Achse zu verschwenken, somit also an den Plattenzylinder an- und von diesem abstellbar zu lagern.In a further embodiment of the invention, which is designed to be very advantageous, it is provided that the guide device is attached to a folding bar which is known per se and is assigned to a pressure roller which can be set on the plate cylinder. In this embodiment, it is essential that the guide device cannot be pivoted about a pivot axis attached to the guard or the magazine and thus also vertically displaceable or can be moved on corresponding guide means attached to the guard or the magazine. In this variant, it is explicitly provided that the guide device is pivoted about an axis fixed to the frame, that is to say it is mounted on the plate cylinder and can be removed from it.

Der besondere Vorzug dieser Art der Anbringung der Leiteinrichtung in Verbindung mit dem erfindungsgemäßen Magazin ist, daß keine zusätzlichen Stellmittel zum Verschwenken der Leiteinrichtung vorgesehen werden müssen. Das Anstellen der Leiteinrichtung bei Anbringung an der an sich bekannten und einer Andrückrolle zugeordneten Abkantleiste erfolgt dabei durch die dieser Einrichtung zugeordneten Stellmittel. Auch hierbei wird ausgenutzt, daß die auf den Anschlägen abgestellte neue, zuzuführende Druckplatte durch den Anstellvorgang aus der Grundposition von den Anschlägen abgenommen und somit in den geöffneten Erfassungsbereich der Druckanfang-Spannschiene einführbar ist.The particular advantage of this type of attachment of the guide device in connection with the magazine according to the invention is that none additional adjusting means for pivoting the guide device must be provided. The guide device is attached when it is attached to the folding bar, which is known per se and is assigned to a pressure roller, by means of the adjusting means assigned to this device. Here, too, use is made of the fact that the new printing plate to be supplied placed on the stops is removed from the stops by the adjustment process from the basic position and can thus be inserted into the open detection area of the pressure start tensioning rail.

Des weiteren erfolgt die Erläuterung von drei bevorzugten Ausführungsbei spielen der Erfindung anhand der Zeichnungen.Furthermore, three preferred embodiments of the invention are explained with reference to the drawings.

Es zeigt:

Fig. 1
das erfindungsgemäße Magazin im Schnitt, und
Fig. 2, 3
zwei weitere Varianten des erfindungsgemäßen Magazins.
It shows:
Fig. 1
the magazine of the invention in section, and
2, 3
two further variants of the magazine according to the invention.

Fig. 1 zeigt als Ausschnitt den Teil eines Druckwerkes einer Druckmaschine in Reihenbauweise. Zwischen den zwei nicht dargestellten Seitengestellwänden dieses Druckwerkes ist ein Plattenzylinder 1 galagert, der in einer Zylindergrube 2 eine dem Druckanfang DA und dem Druckende DE zugeordnete Spannschiene 3, 4 aufweist.Fig. 1 shows a section of the part of a printing unit of a printing press in series. Between the two side frame walls of this printing unit, not shown, a plate cylinder 1 is mounted, which in a cylinder pit 2 has a tensioning rail 3, 4 assigned to the printing start DA and the printing end DE.

Vor dem Druckwerk mit dem Plattenzylinder 1 und dem darunter angeordneten Gummituchzylinder 5 ist über je eine an einer Seitengestellwand des Druckwerks angebrachte Führungsschiene (nicht dargestellt) ein Schutz 6 verschiebbar angeordnet, der sich gemäß Fig. 1 in einer Grundstellung während des Druckbetriebes befindet. Dieser Schutz 6 kann, wie durch den Pfeil angedeutet, hoch geschoben 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, a protection 6 (not shown) is slidably arranged over a guide rail (not shown) attached to a side frame wall of the printing unit, which is in a basic position according to FIG. 1 during printing operation. This protection 6 can, as indicated by the arrow, be pushed up. The protection 6 extends across the width of the printing unit.

Im oberen Bereich des Schutzes 6 ist als Drehgelenk eine Schwenkachse 7 angebracht, an der die als Blechprofil 8 ausgebildete Leiteinrichtung aufgehängt ist. Das Blechprofil 8 weist dabei eine leichte Krümmung auf und besitzt die Formatbreite des Plattenzylinders 1. An dem schwenkbaren Ende des Blechprofiles 8 ist eine Einführschiene 9 angebracht bzw. durch eine entsprechende Profilierung entstanden, die durch Verschwenken des Blechprofils 8 an dem Außenumfang des Plattenzylinders 1 an- bzw. von diesem abschwenkbar ist (Pfeil).In the upper area of the protection 6, a pivot axis 7 is attached as a swivel joint, on which the guide device designed as a sheet metal profile 8 is suspended. The sheet profile 8 has a slight 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 or created by a corresponding profile, which by pivoting the sheet profile 8 on the outer circumference of the plate cylinder 1 - or can be swung away from it (arrow).

An der oberen Traverse 10 des Schutzes 6 ist je ein Führungsblech 11 und 12 angebracht, welche eine Länge aufweisen, die etwas größer ist als das Maximal zuverarbeitende Druckplattenformat. Auf der konkaven Innenseite des gekrümmten Blechprofils 8 sind in mehreren voneinander beabstandeten Streifen Bürsten 14 angeordnet, über deren Borsten eine neu zuzuführende Druckplatte mit ihrer druckenden Seite abgestützt wird.On the upper cross member 10 of the guard 6, a guide plate 11 and 12 is attached, which have a length that is slightly larger than the maximum printing plate format to be processed. On the concave inside of the curved sheet-metal profile 8, brushes 14 are arranged in a plurality of spaced-apart strips, over the bristles of which a printing plate to be supplied is supported with its printing side.

Die Einführschiene 9 am schwenkbaren Ende des Blechprofils 8 weist das in Fig. 1 dargestellte Profil auf und besitzt eine zum Plattenzylinder 1 weisende Einführfläche 15, die etwa in der Höhe der Oberseite der Bürsten 14 liegt.The insertion rail 9 at the pivotable end of the sheet metal profile 8 has the profile shown in FIG. 1 and has an insertion surface 15 facing the plate cylinder 1, which lies approximately at the height of the top of the brushes 14.

Am oberen Ende des Schutzes 6 ist neben den Führungsblechen 11 und 12 im Bereich der Bürsten 14 noch ein weiteres Führungsblech 13 angeordnet, so daß diese insgesamt 3 Führungsbleche 11, 12, 13 zwei Schlitze 21, 22 erzeugen. Die Schlitze 21, 22 weisen ebenso wie die Führungsbleche 11, 12, 13 eine Breite auf, die etwas größer ist wie das Maximal zu verarbeitende Druckplattenformat. Wie noch weiter untenstehend erläutert wird, dient der Schlitz 21 zum Aufnehmen und Zuführen einer neuen Druckplatte, der Schlitz 22 in Verbindung mit den Führungsblechen 11, 12 zum Herausführen einer gebrauchten Druckplatte.At the upper end of the protection 6, in addition to the guide plates 11 and 12, a further guide plate 13 is arranged in the area of the brushes 14, so that these produce a total of 3 guide plates 11, 12, 13, two slots 21, 22. The slots 21, 22, like the guide plates 11, 12, 13, have a width which is somewhat larger than the maximum printing plate format to be processed. As will be explained further below, the slot 21 serves for receiving and feeding a new printing plate, the slot 22 in connection with the guide plates 11, 12 for leading out a used printing plate.

In Fig. 1 ist die Grundposition des Blechprofils 8, also die Grundposition der Leiteinrichtung gestrichelt dargestellt. In dieser Position befindet sich die Leiteinrichtung, wenn gedruckt wird, diese Position wird aber auch eingenommen beim Herausführen einer gebrauchten Druckplatte. Zum An- und Abschwenken des Blechprofils 8 mit der Einführschiene 9 ist vorzugsweise 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 Blechprofiles 8 bewirkt. Die Pneumatikzylinder 19 können auch direkt im Schutz 6 angebracht oder direkt am Blechprofil 8 angelenkt sein.In Fig. 1 is the basic position of the sheet profile 8, that is Basic position of the control device is shown in dashed lines. The guide device is in this position when printing, but this position is also used when leading out a used printing plate. For the pivoting of the sheet profile 8 with the insertion rail 9, a pneumatic cylinder 19 is preferably attached to both side frame walls of the printing machine, which causes the corresponding pivoting of the sheet profile 8 via a respective angle lever 20 mounted on the frame and a driving pin (not shown) attached to it . The pneumatic cylinders 19 can also be mounted directly in the protection 6 or articulated directly on the sheet profile 8.

Damit sich das Blechprofil 8 mit der Einführschiene 9 im angestellten Zustand (Fig. 1) sicher am Plattenzylinder 1 abstützt, sind beispielsweise an den beiden Enden der Einführschiene 9 nicht dargestellte Anschläge aus Polyamid angebracht. Somit ist ein sicheres und beschädigungsfreies Abstützen der Leiteinrichtung an den Schmitzringen des Plattenzylinders 1 möglich. Auch ist eine Abstützung der Leiteinrichtung an der Spannschiene 3 möglich.So that the sheet metal profile 8 with the insertion rail 9 is securely supported on the plate cylinder 1 in the engaged state (FIG. 1), stops made of polyamide, for example, are attached to the two ends of the insertion rail 9. A safe and damage-free support of the guide device on the bearer rings of the plate cylinder 1 is possible. It is also possible to support the guide device on the tensioning rail 3.

Wie in Fig. 1 gezeigt ist im Bereich des unteren Endes des Führungsbleches 11 eine mit dem Blechprofil 8 zusammen verschwenkbare Leitfläche 18 angebracht, die ebenfalls eine leichte gekrümmte Form aufweist. Es kann sich dabei um eine einteilige Leitfläche 18 oder über mehrere voneinander beabstandete schwenkbar aufgehängte Zungen handeln. In Fig. 1 ist die Grundposition der Leitfläche 18 gestrichelt dargestellt. Wie noch erläutert wird, wird in dieser Grundposition die gebrauchte Druckplatte herausgefördert. Die Leitfläche 18 kann ebenfalls aus Blech oder aber auch aus Kunststoff gefertigt sein und ist mit dem Blechprofil 8 über Stege an beiden Enden des Profiles verbunden.As shown in FIG. 1, in the area of the lower end of the guide plate 11 there is a guide surface 18 which can be pivoted together with the plate profile 8 and which likewise has a slightly curved shape. This can be a one-piece guide surface 18 or a plurality of pivotally suspended tongues spaced apart from one another. In Fig. 1, the basic position of the guide surface 18 is shown in dashed lines. As will be explained, the used printing plate is conveyed out in this basic position. The guide surface 18 can also be made of sheet metal or plastic and is connected to the sheet profile 8 via webs at both ends of the profile.

Am Schutz 6 sind zwei voneinander beabstandete Anschläge 16 angebracht, die in der Grundstellung des Blechprofils 8 durch entsprechende nicht dargestellte Durchbrüche im Blechprofil 8 ragen. In der Grundstellung des Blechprofils 8, also der Leiteinrichtung wird durch den Schlitz 21 eine Druckplatte auf eben diese Anschläge 16 abgestellt. Die Leitfläche 18 nimmt dabei die gestrichelt gezeigte Position ein. Nachdem die Druckplatte am Druckende DE von der Spannschiene 4 gelöst wurde und deren Ende somit frei ist, wird durch Rückwärtsdrehen des Plattenzylinders das Ende der Druckplatte über die Leitfläche 18 (Grundposition gestrichelt) und die beiden Führungsbleche 11 und 12 aus dem Schlitz 22 herausgefördert.Two spaced-apart stops 16 are attached to the protection 6 and, in the basic position of the sheet metal profile 8, project through corresponding openings (not shown) in the sheet metal profile 8. In the Basic position of the sheet metal profile 8, that is to say the guide device, a pressure plate is placed on these stops 16 through the slot 21. The guide surface 18 assumes the position shown in dashed lines. After the printing plate at the printing end DE has been released from the tensioning rail 4 and its end is thus free, the end of the printing plate is conveyed out of the slot 22 and the two guide plates 11 and 12 out of the slot 22 by turning the plate cylinder backwards.

Am Schlitz 22 befindet sich eine über die Breite des Schlitzes 22 sich erstreckende und etwas nach oben geneigte Gummilippe 23 als Haltemittel. Der Plattenzylinder 1 wird solange zurückgedreht, bis er die Stellung wie in Fig. 1 gezeigt einnimmt. Die dem Druckanfang DA zugeordnete Spannschiene 3 wird geöffnet, so daß die gebrauchte und durch die flexible Gummilippe 23 in den Spalt 22 reingeschobene Druckplatte von Hand aus dem Erfassungsbereich 17 der Spannschiene 3 herausgezogen werden kann. Die Gummilippe 23 wirkt in der dargestellten Anordnung als ein entgegen der Transportrichtung der gebrauchten Druckplatte hemmend wirkendes Haltemittel. Die Gummilippe 23 ist oberhalb des Spaltes 22 an dessen einer Kante angeordnet und wir durch die gebrauchte Druckplatte wie ein Deckel aufgebogen. Durch die Elastizität der Gummilippe 23 wird die in den Spalt 22 eingefahrene Druckplatte gegen die andere Kante des Spaltes 22 gedrückt und gehalten. Die gebrauchte Druckplatte wird beispielsweise 10cm weit aus dem Erfassungsbereich herausgezogen, so daß deren Vorderkante keine Störung für den rotierenden Plattenzylinder 1 oder sonstige Teile darstellt. Damit das Ende der gebrauchten Druckplatte sicher den Weg in den trichterförmigen Bereich zwischen den Führungsblechen 11 und 12 zum Schlitz 22 findet, kann zusätzlich ein Einlaufschutz 24 eine weitere Leitfunktion übernehmen.At the slot 22 there is a rubber lip 23 which extends over the width of the slot 22 and is slightly inclined upwards as a holding means. The plate cylinder 1 is turned back until it assumes the position shown in FIG. 1. The tensioning rail 3 assigned to the start of pressure DA is opened so that the used printing plate which is pushed into the gap 22 by the flexible rubber lip 23 can be pulled out of the detection area 17 of the tensioning rail 3 by hand. In the arrangement shown, the rubber lip 23 acts as a holding means which acts in an inhibiting manner against the transport direction of the used printing plate. The rubber lip 23 is arranged above the gap 22 at one edge and we bent like a lid through the used pressure plate. Due to the elasticity of the rubber lip 23, the pressure plate inserted into the gap 22 is pressed and held against the other edge of the gap 22. The used printing plate is pulled out, for example, 10 cm from the detection area, so that its front edge does not represent a disturbance for the rotating plate cylinder 1 or other parts. In order for the end of the used pressure plate to find its way safely into the funnel-shaped area between the guide plates 11 and 12 to the slot 22, an inlet protection 24 can also take on a further guiding function.

Eine nicht dargestellte Steuerung fragt die nicht dargestellten und in an sich bekannter Weise elektrisch isoliert am Plattenzylinder 1 angebrachten Registerstifte ab und stellt somit fest, ob die gebrauchte Druckplatte aus dem Erfassungsbereich 17 der geöffneten Spannschiene 3 herausgezogen wurde. Ist dies der Fall, so leitet die Steuerung über die Pneumatikzylinder 19 das Anschwenken des Blechprofils 8 mit der Einführschiene 9 ein. Dadurch wird auch die Leitfläche 18 in die in Fig. 1 dargestellte Position bewegt. In der Grundposition des Blechprofils 8 war die neue bereitgestellte Druckplatte auf den Anschlägen 16 abgestellt. Die Anschläge 16 sind in ihrer Länge derartig bemaßt, daß nun im angestellten Zustand des Blechprofils 8 diese den Weg der Druckplatte zum Plattenzylinder 1 nicht mehr behindern. Die Druckplatte wird nur durch Reibung zwischen den Bürsten 14 und der Leitfläche 18 gehalten. Durch einen leichten Druck der Bedienperson über das Druckende der Druckplatte her, kann nun die neue Druckplatte in den geöffneten Erfassungsbereich 17 der Druckanfang DA Spannschiene 3 hineingeschoben werden. Durch die Steuerung ist der Plattenzylinder 1 zuvor in die entsprechende Position gefahren worden. Durch die Steuerung erfolgt nun wiederum eine Abfrage der korrekten Lage der Druckplatte an den Registerstiften, woraufhin die entsprechenden Stellmittel zum Schließen des Erfassungsbereichs 17 angesteuert werden, die Druckplatte also in ihrem Druckanfang geklemmt wird.A control, not shown, queries the register pins, not shown and attached to the plate cylinder 1 in an electrically insulated manner and thus determines whether the used printing plate is out of the detection area 17 of the opened one Clamping rail 3 was pulled out. If this is the case, the control unit initiates the pivoting of the sheet profile 8 with the insertion rail 9 via the pneumatic cylinders 19. As a result, the guide surface 18 is also moved into the position shown in FIG. 1. In the basic position of the sheet metal profile 8, the new pressure plate provided was placed on the stops 16. The stops 16 are dimensioned in length such that they no longer hinder the path of the pressure plate to the plate cylinder 1 when the sheet profile 8 is in the engaged state. The pressure plate is held only by friction between the brushes 14 and the guide surface 18. By a slight pressure from the operator over the printing end of the printing plate, the new printing plate can now be pushed into the opened detection area 17 of the printing start DA tensioning rail 3. The plate cylinder 1 has previously been moved into the corresponding position by the control. The control then again prompts for the correct position of the printing plate on the register pins, whereupon the corresponding actuating means for closing the detection area 17 are activated, that is to say the printing plate is clamped at the beginning of its printing.

Die zum Plattenzylinder 1 hingewandte Seite der Einführschiene 9 stellt dabei eine Einführfläche 15 dar, die im wesentlichen einen trichterförmigen Weg für die Vorderkante der neuen Druckplatte in den geöffneten Erfassungsbereich 17 der Spannschiene 3 bildet.The side of the insertion rail 9 facing the plate cylinder 1 represents an insertion surface 15 which essentially forms a funnel-shaped path for the front edge of the new printing plate into the open detection area 17 of the tensioning rail 3.

Nachdem die Steuerung die registergerechte Anlage der neuen Druckplatte an den Registerstiften festgestellt hat, wird das Klemmen der Druckplatte eingeleitet wozu die entsprechenden das Schließen des Erfassungsbereiches 17 bewirkenden Stellmittel angesteuert werden. Sodann erfolgt eine erneute Abfrage der Registerstifte, was dazu dient, festzustellen, ob beim Klemmen der Druckplatte eine evtl. Verschiebung stattgefunden hat.After the control has determined that the new printing plate is in register with the register pins, the clamping of the printing plate is initiated, for which purpose the corresponding actuating means which close the detection area 17 are actuated. The register pins are then queried again, which is used to determine whether a possible shift has occurred when the printing plate was clamped.

Ist obige Abfrage mit korrektem Ergebnis erfolgt, so wird durch Ansteuern des Pneumatikzylinders 19 das Blechprofil 8 wieder in die Grundposition verschwenkt und der Plattenzylinder 1 solange vorwärts gedreht bis das Druckende der Druckplatte in die dem Druckende DE zugeordnete Spannschiene 4 eingeführt, geklemmt und sodann gespannt wird. Der Druckplattenwechselvorgang ist somit beendet und der eigentliche Druckvorgang kann beginnen. Die in dem Schlitz 22 hineingeführte, gebrauchte und durch die Gummilippe 23 gehaltene Druckplatte kann nun während des Druckvorganges entnommen werden und eine neue für den nächsten Druckauftrag vorgesehene Druckplatte kann in den Schlitz 21 eingeführt und auf den Anschlägen 16 abgestellt werden.If the above query was carried out with correct result, the sheet metal profile 8 is returned to the by actuating the pneumatic cylinder 19 Basic position pivoted and the plate cylinder 1 rotated forward until the printing end of the printing plate is inserted into the clamping rail 4 assigned to the printing end DE, clamped and then tensioned. The printing plate change process is thus finished and the actual printing process can begin. The used in the slot 22, used and held by the rubber lip 23 printing plate can now be removed during the printing process and a new printing plate intended for the next print job can be inserted into the slot 21 and placed on the stops 16.

Fig. 2 zeigt eine weitere sehr vorteilhafte Ausführungsform der Erfindung. Das Führungsblech 11 mit den Bürsten 14 ist hierbei in Form einer starren, leicht gekrümmten Kontur soweit in den das Magazin bildenden Schutz 6 heruntergezogen, so daß die vertikale Verfahrbarkeit des Schutzes 6 nicht behindert wird. In dem das Magazin bildende Schutz 6 sind, bezogen auf die Achse des Plattenzylinders, voneinander beabstandet zwei Anschläge 16 in Form von Rundbolzen angebracht. Wie in Fig. 2 dargestellt, weisen diese eine überwiegend horizontale Orientierung, leicht aufwärts gerichtet, auf.2 shows a further very advantageous embodiment of the invention. The guide plate 11 with the brushes 14 is drawn down in the form of a rigid, slightly curved contour so far into the protection 6 forming the magazine, so that the vertical travel of the protection 6 is not hindered. In the guard 6 forming the magazine, two stops 16 in the form of round bolts are mounted at a distance from one another with respect to the axis of the plate cylinder. As shown in Fig. 2, these have a predominantly horizontal orientation, slightly upward.

Auf den als Rundbolzen ausgebildeten Anschlägen 16 ist über nicht dargestellte Lagermittel die Leiteinrichtung 8, 9 linear verschiebbar. Bei den Lagermitteln kann es sich beispielsweise um Kugelrollbuchsen handeln. Die Anschläge 16 bilden somit eine Linearführung für die Leiteinrichtung 8, 9.On the stops 16 designed as round bolts, the guide device 8, 9 can be displaced linearly by means of bearing means (not shown). The bearing means can be, for example, ball roller bushings. The stops 16 thus form a linear guide for the guide device 8, 9.

In Fig. 2 ist die Leiteinrichtung 8, 9 in ihrer Grundstellung, also vom Plattenzylinder abgestellt wiedergegeben. In dieser Stellung kann der das Magazin bildende Schutz 6 vertikal nach oben geschoben werden, eine gebrauchte Druckplatte über die Leiteinrichtung 18 vom Plattenzylinder 1 abgeführt werden, wobei diese in den Spalt 22 hinein gefördert wird und ferner erfolgt in dieser Stellung der Leiteinrichtung 8, 9 auch der Druckbetrieb. Nachdem eine neue, zuzuführende Druckplatte durch den Spalt 21 an dem Führungsblech 11 vorbei auf den Anschlägen 16 abgestellt ist, kann nach Abfördern einer gebrauchten Druckplatte die Leiteinrichtung 8, 9 an den Plattenzylinder 1 angestellt werden. Dies erfolgt durch hier nicht dargestellte Stellmittel. Die Leiteinrichtung 8, 9 wird somit aus ihrer Grundposition heraus parallel zu sich in die in Fig. 2 gestrichelt dargestellte und an den Plattenzylinder 1 angestellte Position verschoben. Wie in Fig. 2 dargestellt, weist die Leiteinrichtung 8, 9 dabei die gleiche Profilierung sowie Bürsten 14 auf, wie das schwenkbare Ende der in Fig. 1 dargestellten Leiteinrichtung 8, 9. Auch hier bildet also auch im angestellten Zustand eine Einführfläche 15 den trichterförmigen Bereich zum Einführen einer neuen Druckplatte in den geöffneten Erfassungsbereich 17 der Druckanfang-Spannschiene 3.2, the guide device 8, 9 is shown in its basic position, that is to say turned off from the plate cylinder. In this position, the guard 6 forming the magazine can be pushed vertically upward, a used printing plate can be removed from the plate cylinder 1 via the guide device 18, this being conveyed into the gap 22, and the guide device 8, 9 also takes place in this position the printing company. After a new pressure plate to be fed through the gap 21 on the guide plate 11 is parked past on the stops 16, the guide device 8, 9 can be placed on the plate cylinder 1 after removal of a used printing plate. This is done by means not shown here. The guide device 8, 9 is thus shifted from its basic position parallel to itself into the position shown in dashed lines in FIG. 2 and adjusted to the plate cylinder 1. As shown in FIG. 2, the guide device 8, 9 has the same profile and brushes 14 as the pivotable end of the guide device 8, 9 shown in FIG. 1 Area for inserting a new pressure plate into the open detection area 17 of the pressure start clamping rail 3.

Die die Linearführung für die Leiteinrichtung 8, 9 bildenden Anschläge 16 sind durch entsprechende Durchbrüche in der Leiteinrichtung 8, 9 hindurch geführt und derartig bemaßt, so daß sich einerseits keine Behinderung bezüglich der vertikalen Verschiebbarkeit des das Magazin bildenen Schutzes 6 ergibt und ferner dahingehend, daß durch das Anstellen der Leiteinrichtung 8, 9 an den Plattenzylinder 1 die Vorderkante der neuen Druckplatte aus deren Einwirkbereich gelangt, die neue Druckplatte also in den Erfassungsbereich 17 eingeführt werden kann. Auch kann vorgesehen sein störende Teile, beispielsweise den Einlaufschutz 24 zum vertikalen Verschieben des Schutzes 6 zu verschwenken.The stops 16 which form the linear guide for the guide device 8, 9 are passed through corresponding openings in the guide device 8, 9 and dimensioned such that there is on the one hand no obstruction with regard to the vertical displaceability of the guard 6 forming the magazine and furthermore in that by placing the guide device 8, 9 on the plate cylinder 1, the front edge of the new printing plate comes out of its area of influence, that is to say the new printing plate can be introduced into the detection area 17. Disruptive parts can also be provided, for example pivoting the inlet protection 24 for the vertical displacement of the protection 6.

Fig. 3 zeigt eine weitere bevorzugte Ausführungsform der Erfindung. Im Gegensatz zu der Anbringung der Leiteinrichtung 8, 9 an dem das Magazin bildenden und vertikal verfahrbaren Schutz 6 gemäß den Figuren 1 und 2 ist hier die Leiteinrichtung 8, 9 um eine gestellfeste, parallel zum Plattenzylinder 1 verlaufende Achse verschwenkbar.3 shows a further preferred embodiment of the invention. In contrast to the attachment of the guide device 8, 9 to the vertically movable protection 6 forming the magazine according to FIGS. 1 and 2, the guide device 8, 9 can be pivoted here about an axis fixed to the frame and running parallel to the plate cylinder 1.

Ähnlich wie bei der Ausführung gemäß Fig. 2 ist hier das Führungsblech 11 mit den Bürsten 14 in Form einer starren, im wesentlichen geradlinig verlaufende Leiste innerhalb dem das Magazin bildenden Schutz 6 herunter gezogen. Am Ende des Führungsbleches 11 mit den Bürsten 14 sind am Schutz 6 die Anschläge 16 beispielsweise in Form von Blechlaschen angebracht. Eine in den Schlitz 21 eingeführte neue Druckplatte kann auf diesen abgestellt werden.Similar to the embodiment according to FIG. 2, here the guide plate 11 with the brushes 14 is essentially rigid straight strip pulled down inside the protection 6 forming the magazine. At the end of the guide plate 11 with the brushes 14, the stops 16 are attached to the guard 6, for example in the form of sheet metal tabs. A new printing plate inserted into the slot 21 can be placed on this.

Fig. 3 zeigt eine um eine gestellfeste Achse, über angedeutete Lagerhebel schwenkbar an den Plattenzylinder 1 anstellbare Andrückrolle bekannter Art. Diese Andrückrolle 25 dient dem Aufziehen einer neuen, zuzuführende Druckplatte um den Außenumfang des Plattenzylinders 1 und weist demzufolge dessen Formatbreite auf. Die Lagerhebel sind an beiden Enden der Andrückrolle 25 angebracht. Ebenfalls ist in an sich bekannter Art schwenkbar um die Drehachse der Andrückrolle 25 eine schalenförmig profilierte Abkantleiste 26 angeordnet. Diese dient bekanntlich dem Umbiegen des nachlaufenden Endes einer Druckplatte um die Kontur des Druckendes DE. Es sei hier zum Verständnis nur kurz wiederholt, daß durch Anstellen der Andrückrolle 25 an den Plattenzylinder 1 eine im Erfassungsbereich 17 geklemmte Druckplatte durch Drehen des Plattenzylinders 1 in Richtung des Pfeiles um diesen aufgezogen wird. Der Plattenzylinder 1 wird dabei soweit gedreht bis die dem Druckende DE zugeordnete Spannschiene 4 etwa dort zum Liegen kommt wo gemäß Fig. 3 die vordere Spannschiene 3 gezeigt ist. Während dieses Vorganges verbleibt die Abkantleiste 26 vom Plattenzylinder abgestellt. Zum Abkanten der Druckplatte um die Kontur des Druckendes DE sowie zum Einführen deren Hinterkante in die Druckende-Spannschiene 4 wird sodann die Abkantleiste 26 durch eine Verschwenkbewegung an den Plattenzylinder 1 angestellt. Die Druckende-Spannschiene 4 erfaßt die Hinterkante der Platte zum Klemmen und zum Spannen. Das An- und Abstellen der Andrückrolle 25 sowie das Verschwenken der Abkantleiste 26 um die Drehachse der Andrückrolle 25 erfolgt dabei durch hier nicht gezeigte und an sich bekannte Stellmittel, insbesondere in Form von Pneumatikzylindern.3 shows a pressure roller of known type which can be pivoted to the plate cylinder 1 by means of indicated bearing levers. This pressure roller 25 serves to pull up a new pressure plate to be fed around the outer circumference of the plate cylinder 1 and consequently has its format width. The bearing levers are attached to both ends of the pressure roller 25. Likewise, in a manner known per se, a cup-shaped profiled folding bar 26 is arranged pivotably about the axis of rotation of the pressure roller 25. As is known, this serves to bend the trailing end of a printing plate around the contour of the printing end DE. For the sake of understanding, it should only be repeated briefly that by pressing the pressure roller 25 against the plate cylinder 1, a printing plate clamped in the detection area 17 is pulled around the plate cylinder 1 by rotating it in the direction of the arrow. The plate cylinder 1 is rotated until the tensioning rail 4 assigned to the printing end DE comes to rest approximately where the front tensioning rail 3 is shown in FIG. 3. During this process, the folding bar 26 remains off the plate cylinder. To fold the printing plate around the contour of the printing end DE and to insert its trailing edge into the printing end tensioning rail 4, the folding bar 26 is then set against the plate cylinder 1 by a pivoting movement. The printing end tensioning rail 4 detects the rear edge of the plate for clamping and tensioning. The pressing roller 25 is turned on and off and the folding bar 26 is pivoted about the axis of rotation of the pressing roller 25 by adjusting means, not shown here and known per se, in particular in the form of pneumatic cylinders.

Gemäß Fig. 3 ist die Leiteinrichtung 8, 9 als ein formatbreites und um zwei stumpfe Winkel gebogene Blechschiene ausgebildet. Die Leiteinrichtung 8, 9 ist dabei an dem zum Plattenzylinder 1 zugewandten Teil der Abkantleiste 26 angebracht. In Fig. 3 ist mit a die Grundposition der Leiteinrichtung 8, 9 und somit auch die Grundposition von Andrückrolle 25 sowie Abkantleiste 26 dargestellt. Beim Aufziehen der neuen Druckplatte um den Außenumfang des Plattenzylinders 1 ist die Andrückrolle 25 an diesen angestellt, die Abkantleiste 26 jedoch vom Plattenzylinder 1 abgestellt. Die an der Abkantleiste 26 angebrachte Leiteinrichtung 8, 9 nimmt somit die gestrichelt dargestellte Position b ein. Die an dem Plattenzylinder 1 angestellte Andrückrolle 25 ist dabei ebenfalls gestrichelt dargestellt. Die Länge der an der Abkantleiste 26 angebrachten Leiteinrichtung 8, 9 ist dabei derartig, daß eine durch den Schlitz 21 eingeführte und auf den Anschlägen 16 abgestellte neue Druckplatte nicht behindert wird. Nachdem eine neue Druckplatte am Druckende DE in der Spannschiene 4 befestigt wurde, werden Andrückrolle 25 nebst Abkantleiste 26 wieder vom Plattenzylinder abgestellt und es wird die Position gemäß Fig. 3 angefahren. Sodann wird die Andrückrolle 25 über die Stellmittel an den Plattenzylinder 1 angestellt, wobei Anschlagmittel verhindern, daß die Andrückrolle 25 in die Zylindergrube 2 hinein fällt. Die Leiteinrichtung 8, 9 wird somit von der Stellung a in die Stellung b verschwenkt. Sodann erfolgt das Anstellen der Abkantleiste 26 und damit das Verschwenken der Leiteinrichtung 8, 9 in die Druckplattenzuführstellung, also in die Stellung c. Wie dargestellt ist dabei die erfindungsgemäße Leiteinrichtung 8, 9 derartig geformt, daß sich ein Teil des Blechprofiles an die Oberseite der vorderen Spannschiene 3 anschmiegt und somit der mittlere Abschnitt der Leiteinrichtung 8, 9, die sogenannte Einführschiene 9, mit der zum Plattenzylinder 1 gewandten Seite die Einführfläche 15 für die neu zuzuführende Druckplatte bildet. Durch das Verschwenken der Leiteinrichtung 8, 9 wurde mit deren schwenkbaren Ende die auf den Anschlägen 16 abgestellte Druckplatte von diesen abgenommen und kann nun von Hand in den Erfassungsbereich 17 eingeführt werden.3, the guide device 8, 9 as a wide and Metal rail bent by two obtuse angles. The guide device 8, 9 is attached to the part of the folding strip 26 which faces the plate cylinder 1. In Fig. 3 with a the basic position of the guide device 8, 9 and thus the basic position of the pressure roller 25 and the folding bar 26 is shown. When the new printing plate is pulled up around the outer circumference of the plate cylinder 1, the pressure roller 25 is placed against it, but the folding bar 26 is turned off from the plate cylinder 1. The guide device 8, 9 attached to the folding bar 26 thus assumes the position b shown in broken lines. The pressure roller 25 employed on the plate cylinder 1 is also shown in broken lines. The length of the guide device 8, 9 attached to the folding bar 26 is such that a new pressure plate inserted through the slot 21 and placed on the stops 16 is not hindered. After a new printing plate has been fastened at the printing end DE in the tensioning rail 4, the pressure roller 25 and the folding bar 26 are put down again by the plate cylinder and the position according to FIG. 3 is approached. Then the pressure roller 25 is placed on the actuating means on the plate cylinder 1, wherein stop means prevent the pressure roller 25 from falling into the cylinder pit 2. The guide device 8, 9 is thus pivoted from position a to position b. Then the folding bar 26 is set and thus the pivoting of the guide device 8, 9 into the printing plate feed position, ie into position c. As shown, the guide device 8, 9 according to the invention is shaped such that a part of the sheet profile nestles against the top of the front tensioning rail 3 and thus the middle section of the guide device 8, 9, the so-called insertion rail 9, with the side facing the plate cylinder 1 forms the insertion surface 15 for the new printing plate to be fed. By pivoting the guide device 8, 9 with its pivotable end, the pressure plate placed on the stops 16 was removed from them and can now be inserted into the detection area 17 by hand.

Damit das Verschwenken der Leiteinrichtung 8, 9 über die Abkantleiste 26 bei gleichzeitigem Abnehmen der neuen Druckplatte von den Anschlägen 16 möglich ist, weist die Leiteinrichtung 8, 9 im Bereich des schwenkbaren Endes entsprechende Aussparungen auf, so daß das Verschwenken durch die Anschläge 16 nicht behindert ist. Auch der Abkantleiste 26 sind nicht dargestellte Anschlagmittel zugeordnet, die an der Leiteinrichtung 8, 9 angebracht sein können und ein Abstützen auf der Oberseite der Spannschiene 3 oder den Schmitzringen des Plattenzylinders 1 bewirken. In der Ausführungsform gemäß Fig. 3 sind die Leitflächen 18 insbesondere als axial voneinander beabstandete, biegsame Kunststoffzungen ausgebildet und an dem Führungsblech 11 angebracht. Eine derartige Ausführung behindert daher nicht das Abnehmen der auf den Anschlägen 16 abgestellten neuen Druckplatte durch Vorschwenken der Leiteinrichtung 8, 9 aus der Stellung b in die Stellung c. Abschließend sei noch erwähnt, daß das Ausführen einer gebrauchten Druckplatte aus dem Schlitz 22 über die Leitflächen 18 erfolgt. Außerdem sei kurz darauf hingewiesen, daß um die vertikale Verfahrbarkeit des das Magazin bildenden Schutzes 6 nicht zu behindern, die Leiteinrichtung 8, 9 aus der Stellung a in die Arbeitsstellung c verschwenkt wird.So that the pivoting of the guide device 8, 9 is possible via the folding bar 26 with simultaneous removal of the new pressure plate from the stops 16, the guide device 8, 9 has corresponding recesses in the region of the pivotable end, so that pivoting by the stops 16 is not hindered is. The folding bar 26 is also associated with stop means, not shown, which can be attached to the guide device 8, 9 and which provide support on the upper side of the tensioning rail 3 or the bearer rings of the plate cylinder 1. In the embodiment according to FIG. 3, the guide surfaces 18 are in particular designed as flexible plastic tongues which are axially spaced apart and are attached to the guide plate 11. Such an embodiment therefore does not hinder the removal of the new pressure plate placed on the stops 16 by swiveling the guide device 8, 9 forward from the position b into the position c. Finally, it should also be mentioned that a used printing plate is carried out from the slot 22 via the guide surfaces 18. In addition, it should be briefly pointed out that in order not to impede the vertical movement of the protection 6 forming the magazine, the guide device 8, 9 is pivoted from the position a into the working position c.

Die bei den Ausführungsformen gemäß Fig. 2 und 3 nicht angesprochenen Teile und Abläufe sind dabei die gleichen wie bezüglich Fig. 1 erläutert.The parts and processes not addressed in the embodiments according to FIGS. 2 and 3 are the same as explained with reference to FIG. 1.

BezugszeichenlisteReference list

11
PlattenzylinderPlate cylinder
22nd
ZylindergrubeCylinder pit
33rd
Spannschiene (Druckanfang)Tensioning rail (start of printing)
44th
Spannschiene (Druckende)Tensioning rail (printing end)
55
GummituchzylinderBlanket cylinder
66
Schutzprotection
77
SchwenkachseSwivel axis
88th
BlechprofilSheet profile
99
EinführschieneInsertion rail
1010th
Traversetraverse
1111
FührungsblechGuide plate
1212th
""
1313
""
1414
Bürstento brush
1515
EinführflächeInsertion surface
1616
Anschlagattack
1717th
ErfassungsbereichDetection area
1818th
LeitflächeGuide surface
1919th
PneumatikzylinderPneumatic cylinder
2020th
WinkelhebelAngle lever
2121
Schlitzslot
2222
""
2323
GummilippeRubber lip
2424th
EinlaufschutzBreak-in protection
2525th
AndrückrollePressure roller
2626
AbkantleisteFolding bar
DATHERE
DruckanfangStart of printing
DEDE
DruckendeEnd of printing

Claims (10)

  1. Cassette for automatically exchanging printing plates of a printing press, particularly an offset sheet printing press, wherein the cassette is installed as a protection (6) vertically movable in front of the printing unit and serves for the feeding in of a new printing plate readied in the magazine to the plate cylinder (1) as well as for receiving a used printing plate from the plate cylinder (1),
    characterised in that,
    within the cassette constructed as a protection (6) in front of the printing unit stops (16) are installed on to which a printing plate located in the protection (6) can be deposited with its front edge, and that below the cassette a guide device (8, 9) which can be set against the plate cylinder (1) is arranged by means of which after setting on the guide device (8, 9) against the plate cylinder (1) the new printing plate can be fed substantially tangentially against the periphery of the plate cylinder (1).
  2. Cassette according to Claim 1,
    characterised in that,
    the cassette forming the protection (6) in front of the printing unit has two slots (21, 22) at the upper end of the protection (6), wherein in each case one slot (21, 22) is provided for receiving the new as well as the used printing plate.
  3. Cassette according to Claim 1 or 2,
    characterised in that,
    the stops (16) installed within the protection (6) of the cassette penetrate through perforations within the guide device (8, 9).
  4. Cassette at least according to Claims 1 and 2,
    characterised in that,
    a rubber lip (23) is installed at the slot (22) provided for the used printing plate, by means of which the printing plate can be held against the force of its weight.
  5. Cassette according to one of the preceding claims
    characterised in that the guide device (8, 9) is constructed as a curved sheet metal profile (8) suspended on a horizontal swivel axis (7) with a running-in rail (9) installed on its swivellable end.
  6. Cassette according to Claim 5,
    characterised in that,
    the horizontal swivel axis (7) is installed in the vertically movable cassette which is constructed as a protection (6) in front of the printing unit.
  7. Cassette according to one of the preceding Claims,
    characterised in that,
    additional to the guide device (8, 9) a further guide surface (18) is provided on the side turned towards the plate cylinder (1) via which a used printing plate may be fed away.
  8. Cassette according to at least one of the preceding Claims 1, 2, 3, 4 or 7,
    characterised in that the guide device (8, 9) can be set against the plate cylinder (1) via linear guides.
  9. Cassette according to at least one of the preceding Claims 1, 2, 3, 4 or 7,
    characterised in that,
    the guide device (8, 9) is mounted swivellably about an axis fixed with respect to the frame and running parallel to the axis of the plate cylinder (1).
  10. Cassette at least according to Claim 9,
    characterised in that,
    the guide device (8, 9) is installed on a bending-off bar (26) which serves for bending off and introducing the print end edge of the printing plate and is arranged relative to a pressing-on roller (25) mounted fixed with respect to the frame and which can be set against the plate cylinder (1), wherein the bending-off bar (26) is mounted movably with respect to the pressing-on roller (25).
EP94117317A 1993-11-18 1994-11-03 Cassette for automatically exchanging printing plates in a printing machine Expired - Lifetime EP0654349B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4339344 1993-11-18
DE4339344A DE4339344C1 (en) 1993-11-18 1993-11-18 Device for the automated exchange of printing plates in a printing machine

Publications (3)

Publication Number Publication Date
EP0654349A1 EP0654349A1 (en) 1995-05-24
EP0654349B1 true EP0654349B1 (en) 1997-05-28
EP0654349B2 EP0654349B2 (en) 1999-12-29

Family

ID=6502871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117317A Expired - Lifetime EP0654349B2 (en) 1993-11-18 1994-11-03 Cassette for automatically exchanging printing plates in a printing machine

Country Status (5)

Country Link
US (1) US5511478A (en)
EP (1) EP0654349B2 (en)
JP (1) JP2680274B2 (en)
AT (1) ATE153598T1 (en)
DE (2) DE4339344C1 (en)

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DE19933943A1 (en) 1999-07-20 2001-01-25 Roland Man Druckmasch Method and device for printing form change
ES2259588T3 (en) * 1999-09-14 2006-10-16 Komori Corporation IRON INTRODUCTION APPARATUS ON A ROTATE PRINT TO PRINT.
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DE10219073A1 (en) 2001-05-23 2002-11-28 Heidelberger Druckmasch Ag Fastening a printing plate at a plate cylinder, of a rotary offset printing press, pushes one end of the plate into a narrow clamping gap to be bent over, and the other plate end is pushed into the gap to be locked by the first end
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JP4603811B2 (en) * 2003-07-25 2010-12-22 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト Device for supplying and / or discharging a plate to a printing press
JP4383973B2 (en) * 2004-06-25 2009-12-16 リョービ株式会社 Printer
JP4979122B2 (en) * 2006-12-18 2012-07-18 株式会社小森コーポレーション Plate insertion device
JP5231041B2 (en) * 2008-02-20 2013-07-10 株式会社小森コーポレーション Plate insertion device
JP5337389B2 (en) * 2008-02-20 2013-11-06 株式会社小森コーポレーション Plate insertion device
DE102008043725A1 (en) * 2008-11-13 2010-06-02 Manroland Ag Device for exchanging and for receiving printing plates at rotary printing presses, comprises manipulator arm with holding element for holding printing plate
DE102017201161B4 (en) 2017-01-25 2024-03-14 Koenig & Bauer Ag Method for mounting a plate onto a cylinder of a printing press and a device for mounting a plate in a printing press
CN109591454B (en) * 2018-12-31 2020-08-07 高斯图文印刷系统（中国）有限公司 Automatic upper plate changing device of book and periodical web printing machine
CN109591453B (en) * 2018-12-31 2020-08-11 高斯图文印刷系统（中国）有限公司 Automatic lower part plate changing device of book and periodical web printing machine
CN112677566A (en) * 2020-12-16 2021-04-20 江西德乐智能科技有限公司 Non-woven bag making machine production line

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Also Published As

Publication number Publication date
EP0654349A1 (en) 1995-05-24
DE4339344C1 (en) 1995-03-30
DE59402906D1 (en) 1997-07-03
JP2680274B2 (en) 1997-11-19
EP0654349B2 (en) 1999-12-29
JPH07186369A (en) 1995-07-25
ATE153598T1 (en) 1997-06-15
US5511478A (en) 1996-04-30

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