EP0982130B1 - Register control device - Google Patents

Register control device Download PDF

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Publication number
EP0982130B1
EP0982130B1 EP99115435A EP99115435A EP0982130B1 EP 0982130 B1 EP0982130 B1 EP 0982130B1 EP 99115435 A EP99115435 A EP 99115435A EP 99115435 A EP99115435 A EP 99115435A EP 0982130 B1 EP0982130 B1 EP 0982130B1
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EP
European Patent Office
Prior art keywords
register
contact
cylinder
printing
signal
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
EP99115435A
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German (de)
French (fr)
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EP0982130A1 (en
Inventor
Thomas Beutler
Christopher Muth
Michael Rother
Helmut Schild
Peter Biernot
Franz Reiner
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication of EP0982130A1 publication Critical patent/EP0982130A1/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
    • B41F27/005—Attaching and registering printing formes to supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/30—Detecting the correct position of printing plates on the cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • the invention relates to a device for register control according to the preamble of claim 1.
  • the Printing forms or printing plates with one each at the beginning and end of printing assigned clamping device held on a plate or plate cylinder.
  • the register-correct overprint is of the individual colors through the individual printing forms of crucial Importance.
  • the individual printing forms are precisely positioned on the Attach the form or plate cylinder.
  • register systems for this have been developed, for example, in the pressure start clamping device Arranged pins or stops, which with the Punched out leading edge of the printing form or printing plate interact.
  • register pins or register stops are designed to be electrically pollable. This can be done in easily done in that the register pins or the stops electrically insulated from the clamping rail or the entire cylinder are arranged so that by registering a metallic Printing form or printing plate, an electrical circuit is closed. The The system is then in register with the cylinder or the register stops attached illuminants (LEDs) can be displayed. Such a configuration is suitable for visual control by hand on a cylinder printing forms to be applied.
  • LEDs illuminants
  • the signal is the Evaluate register query by a controller in order to after the supply of a the new printing plate and the establishment of the register-compliant system Closing rail to fasten the plate.
  • Which the signal evaluating, closing the rail and other processes the control triggering the change process is outside the plate or Form cylinder arranged so that the signal of the electrically interrogated register pins is to be led out of the rotatably mounted cylinder.
  • EP 0 551 976 A1 describes a device for the electrical register interrogation known, in which the signals of the electrically interrogable register pins via am Plate cylinder attached contact surfaces are grinded out.
  • corresponding contacts for example adjustable in the form of roles, these contacts with a the signals evaluating circuit are connected.
  • the disadvantage here is that for Contact space corresponding space on the cylinder and on the frame side for the and switchable contacts (rollers) must be provided.
  • the mounted and removable Contacts also increase construction costs. Pollution of the Contact areas or the contacts (rollers) that can be placed on the contact areas also causes the risk of incorrect signal transmission here.
  • DE 43 39 344 C1 describes a device for automated changing known from printing plates of a printing press.
  • a new one to be added Pressure plate provided in a protection on stops and via a to the Cylinder-adjustable guiding device in the open clamping rail at the start of printing introduced. After inserting the start of printing the plate into the Clamping rail and the clamping of the front edge of the board is through the forward rotation of the cylinder mounted on this.
  • the pressure start clamping rail as well as during mounting Pressure plate with its middle or rear part still in contact with the protection on. How the signals are arranged in the pressure start clamping rail electrically interrogable register pins are led out of the cylinder not described in this document.
  • the object of the present invention is therefore a device for register control to expand in accordance with the preamble of claim 1 so that simple and secure signal transmission is possible.
  • the in the cylinder (plate cylinder / plate cylinder) electrically insulated register pins with a signal generator in Are connected so that these with pulses of predetermined duration and frequency are acted upon.
  • the signals are routed out via the metallic pressure plate, which is done using a contact grinder, a brush or another voltage tap connected to the control unit fixed to the frame becomes.
  • the provided with the new pressure plate during insertion Potential or the pulse train applied register pins cause that after Contact of the pressure plate, i.e. the register-compliant system, this also the Potential or the pulse train has or occupies.
  • this is the contact acting on the back of the metallic pressure plate (aluminum) Potential or the pulse sequence can be tapped and sent to a stationary evaluation unit routable.
  • the electrically isolated from the Cylinder and the clamping rail together with the pressure plate fed to the register pins now takes the potential or the potential of the pulse train of the individual register pins depending on which of the register pins the plate is in first Contact comes.
  • the stationary evaluation unit can be used to determine which one of the register pins the printing plate is first in register and whether this is after all, it is the case with both. Only in this case is one of the Evaluation unit downstream control triggered the clamping process. With the The evaluation unit can also have a display device in signal connection stand, by which it can be indicated whether the pressure plate is in register and at which of the register pins this is done.
  • the tapping of the signals on the back of the printing plate in particular can according to the invention by electrically conductive rollers, grinders or brushes.
  • the present invention is preferably in a known manner and printing plate changer cited in the description instructions attached, where the new pressure plate to be fed before changing into protection is provided and during insertion or during Mounting on the cylinder is still in contact with parts of the protection or is pulled through this.
  • Aluminum printing plates are usually used in sheetfed offset printing machines, which are uncoated on the non-printing back.
  • An in itself Pressure plate changer designed in a known manner can therefore be used the present invention by attaching a roller, a sliding contact or an electrically conductive brush.
  • the role, the sliding contact or the brush is so in the the pressure plate changer forming protection arranged so that the electrical potential of the pressure plate the back of the panel can be tapped and the stationary evaluation and control unit is feedable.
  • the parts that conduct the pressure plate are electrically insulated, i.e. made of electrically non-conductive plastic (or coated metal).
  • a cylinder 1 (plate cylinder, printing form cylinder) indicated in principle points in one not shown and assigned to the start of printing of the printing plate 6
  • Clamping device two register pins 2.1, 2.2, which are electrically insulated opposite the clamping device and the entire cylinder 1 are attached.
  • the register pins 2.1, 2.2 are in signal connection with a signal generator 4.
  • the signal generator 4 within the cylinder 1 is also connected to a power supply in the form of a battery.
  • the pressure plate 5 to be fed to the cylinder 1 has on the front Edge two U-shaped cut-outs, which in a manner known per se the register pins 2.1, 2.2 work together.
  • the back of the pressure plate 5 is assigned a contact 6, via which the potential of the pressure plate 5 can be tapped and an evaluation unit 7 arranged fixed to the frame can be fed.
  • the evaluation unit 7 is in signal connection with a display 9, and also on the output side with a controller 8, through which the entire printing plate change process and in particular the opening and closing of the pressure start clamping device can be triggered in cylinder 1.
  • FIG. 1 shows the position of the pressure plate 1 without contact with the register pins 2.1, 2.2 arranged electrically insulated in the cylinder 1.
  • Figure 2 shows a side view of a part of the cylinder 1 with the to electrically insulated register pins 2.1, 2.2 adjacent pressure plate 5.
  • the pressure plate 5 is protected by a not shown over a with the printing Side of the pressure plate 5 cooperating roller 10 fed to the cylinder 1.
  • the guide roller 10 is preferably made of electrically insulated material manufactured and carries the printing plate 5 on its printing side.
  • the rotatable Roll 10 opposite in the protection, not shown, and thus with the not Coated back of the pressure plate 5 is cooperating in the form of a Sliding contact, an electrically conductive roller or a brush a contact 6 attached through which the electrical potential of the register pins 2.1, 2.2 can be detected and can be forwarded to the stationary evaluation unit 7.
  • the clamping device in cylinder 1 is closed and the pressure plate 5 mounted on the cylinder 1.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Communication Control (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

The present invention generally describes register control equipment for the cylinder of a printing machine. It specifically pertains to the printing plate of sheet-fed offset printing machine that has fitted register pins. The register pins are electrically insulated with respect to the cylinder and emit a signal when a printing plate is resting in register on one or more of the pins. The signal is communicated to a stationary evaluation unit by an electrical contact adapted to contact the printing plate. The evaluation unit uses the communicated signal to determine whether or not insertion was properly performed.

Description

Die Erfindung betrifft eine Einrichtung zur Registerkontrolle gemäß dem Oberbegriff von Anspruch 1.The invention relates to a device for register control according to the preamble of claim 1.

[Stand der Technik][State of the art]

Bei Druckmaschinen und insbesondere Bogenoffsetdruckmaschinen werden die Druckformen bzw. Druckplatten mit je einer dem Druckanfang und dem Druckende zugeordneten Klemmeinrichtung auf einem Form- bzw. Plattenzylinder gehalten. Für die Qualität des Mehrfarbendruckes ist der registergerechte Übereinanderdruck der Einzelfarben durch die einzelnen Druckformen von entscheidender Bedeutung. Demzufolge sind die einzelnen Druckformen lagegenau auf dem Form- bzw. Plattenzylinder anzubringen. Hierzu sind zahlreiche Registersysteme entwickelt worden, welche beispielsweise aus in der Druckanfang-Klemmeinrichtung angeordneten Stiften bzw. Anschlägen bestehen, die mit an der vorlaufenden Kante der Druckform bzw. Druckplatte angebrachten Ausstanzungen zusammenwirken.In printing machines and in particular sheetfed offset printing machines, the Printing forms or printing plates with one each at the beginning and end of printing assigned clamping device held on a plate or plate cylinder. For the quality of multi-color printing, the register-correct overprint is of the individual colors through the individual printing forms of crucial Importance. As a result, the individual printing forms are precisely positioned on the Attach the form or plate cylinder. There are numerous register systems for this have been developed, for example, in the pressure start clamping device Arranged pins or stops, which with the Punched out leading edge of the printing form or printing plate interact.

Bekannt sind Einrichtungen zur Registerkontrolle, bei denen die Registerstifte bzw. Registeranschläge elektrisch abfragbar ausgestaltet sind. Dies kann in einfacher Weise dadurch geschehen, daß die Registerstifte bzw. die Anschläge elektrisch isoliert gegenüber der Klemmschiene bzw. dem gesamten Zylinder angeordnet sind, so daß durch die registergerechte Anlage einer metallischen Druckform bzw. Druckplatte ein elektrischer Stromkreis geschlossen wird. Die registergerechte Anlage ist dann durch am Zylinder bzw. an den Registeranschlägen angebrachte Leuchtmittel (Leuchtdioden) anzeigbar. Eine derartige Ausgestaltung eignet sich zur visuellen Kontrolle für von Hand auf einem Zylinder aufzubringende Druckformen.Devices for register control are known in which the register pins or register stops are designed to be electrically pollable. This can be done in easily done in that the register pins or the stops electrically insulated from the clamping rail or the entire cylinder are arranged so that by registering a metallic Printing form or printing plate, an electrical circuit is closed. The The system is then in register with the cylinder or the register stops attached illuminants (LEDs) can be displayed. Such a configuration is suitable for visual control by hand on a cylinder printing forms to be applied.

Bei halb- bzw. vollautomatischen Druckplattenwechslern ist das Signal der Registerabfrage durch eine Steuerung auszuwerten, um nach dem Zuführen einer neuen Druckplatte und dem Feststellen der registergerechten Anlage die entsprechende Klemmschiene zum Befestigen der Platte zu schließen. Die das Signal auswertende, das Schließen der Schiene bewirkende sowie die weiteren Vorgänge des Wechselvorganges auslösende Steuerung ist außerhalb des Platten- bzw. Formzylinders angeordnet, so daß das Signal der elektrisch abfragbaren Registerstifte aus dem drehbar gelagerten Zylinder herauszuleiten ist.With semi or fully automatic plate changers the signal is the Evaluate register query by a controller in order to after the supply of a the new printing plate and the establishment of the register-compliant system Closing rail to fasten the plate. Which the signal evaluating, closing the rail and other processes the control triggering the change process is outside the plate or Form cylinder arranged so that the signal of the electrically interrogated register pins is to be led out of the rotatably mounted cylinder.

in einer einfachen Weise besteht die Einrichtung zur Herausschleifung der Registersignale aus einem Drehübertrager (z.B. Schleifringübertrager). Dieser setzt jedoch an einem stirnseitigen Ende des Zylinders bzw. des Zylinderzapfens Bauraum voraus. Dieser ist gerade bei Zylindern mit Einrichtungen zur Seiten- und Umfangsregisterverstellung nicht immer vorhanden - ferner verkomplizieren derartige Einrichtungen eine einfache Anbringung eines Übertragungssystems. Ein Schleifringübertrager unterliegt ferner dem Verschleiß, zusätzlich birgt Verschmutzung auch das Risiko einer falschen Signalübertragung (Wechselvorgang wird abgebrochen, obwohl Platte korrekt anliegt).in a simple manner there is the facility for grinding out the Register signals from a rotary transformer (e.g. slip ring transformer). This sets however at an end face of the cylinder or the cylinder journal Space ahead. This is especially with cylinders with facilities for side and Circumference register adjustment not always available - further complicate such devices a simple attachment of a transmission system. A slip ring transmitter is also subject to wear and tear, and it also contains dirt also the risk of incorrect signal transmission (changing process is canceled even though the plate is correctly seated).

Aus der EP 0 551 976 A1 ist eine Einrichtung zur elektrischen Registerabfrage bekannt, bei der die Signale der elektrisch abfragbaren Registerstifte über am Plattenzylinder angebrachte Kontaktflächen herausgeschleift werden. An die am Zylinder angebrachten Kontaktflächen sind entsprechende Kontakte beispielsweise in Form von Rollen anstellbar, wobei diese Kontakte mit einer die Signale auswertenden Schaltung verbunden sind. Nachteilig ist hierbei jedoch, daß für die Kontaktflächen entsprechender Platz am Zylinder sowie gestellseitig für die anund abstellbaren Kontakte (Rollen) vorzusehen ist. Die an- und abstellbar gelagerten Kontakte erhöhen ferner den Bauaufwand. Eine Verschmutzung der Kontaktflächen bzw. der an die Kontaktflächen anstellbaren Kontakte (Rollen) bedingt auch hier das Risiko einer fehlerhaften Signalübertragung.EP 0 551 976 A1 describes a device for the electrical register interrogation known, in which the signals of the electrically interrogable register pins via am Plate cylinder attached contact surfaces are grinded out. To the on Cylinder-mounted contact surfaces are corresponding contacts, for example adjustable in the form of roles, these contacts with a the signals evaluating circuit are connected. The disadvantage here, however, is that for Contact space corresponding space on the cylinder and on the frame side for the and switchable contacts (rollers) must be provided. The mounted and removable Contacts also increase construction costs. Pollution of the Contact areas or the contacts (rollers) that can be placed on the contact areas also causes the risk of incorrect signal transmission here.

Aus der DE 43 39 344 C1 ist eine Vorrichtung für das automatisierte Wechseln von Druckplatten einer Druckmaschine bekannt. Hier wird eine neu zuzuführende Druckplatte in einem Schutz auf Anschlägen bereitgestellt und über eine an den Zylinder anstellbare Leiteinrichtung in die geöffnete Klemmschiene des Druckanfanges eingeführt. Nach dem Einführen des Druckanfanges der Platte in die Klemmschiene sowie dem Klemmen der Plattenvorderkante wird die Platte durch das Vorwärtsdrehen des Zylinders auf diesen aufgezogen. Während des Einführens in die Druckanfang-Klemmschiene sowie während des Aufziehens weist die Druckplatte mit ihrem mittleren bzw. hinteren Teil noch Kontakt mit dem Schutz auf. Wie die Signale von in der Druckanfang-Klemmschiene angeordneten elektrisch abfragbaren Registerstiften aus dem Zylinder herausgeleitet werden, ist in dieser Schrift jedoch nicht beschrieben.DE 43 39 344 C1 describes a device for automated changing known from printing plates of a printing press. Here is a new one to be added Pressure plate provided in a protection on stops and via a to the Cylinder-adjustable guiding device in the open clamping rail at the start of printing introduced. After inserting the start of printing the plate into the Clamping rail and the clamping of the front edge of the board is through the forward rotation of the cylinder mounted on this. During insertion in the pressure start clamping rail as well as during mounting Pressure plate with its middle or rear part still in contact with the protection on. How the signals are arranged in the pressure start clamping rail electrically interrogable register pins are led out of the cylinder not described in this document.

[Aufgabe der Erfindung]OBJECT OF THE INVENTION

Aufgabe der vorliegenden Erfindung ist es daher, eine Einrichtung zur Registerkontrolle gemäß dem Oberbegriff von Anspruch 1 derartig zu erweitern, so daß eine einfache und sichere Signalübertragung möglich ist.The object of the present invention is therefore a device for register control to expand in accordance with the preamble of claim 1 so that simple and secure signal transmission is possible.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen. Gemäß der Erfindung ist vorgesehen, daß die im Zylinder (Plattenzylinder / Druckformzylinder) elektrisch isoliert angebrachten Registerstifte mit einem Signalgeber in Verbindung stehen, so daß diese mit Impulsen vorgegebener Dauer und Frequenz beaufschlagbar sind. Die Herausleitung der Signale erfolgt erfindungsgemäß über die metallische Druckplatte, wozu diese über einen Kontaktschleifer, eine Bürste oder einem sonstigen Spannungsabgriff mit der gestellfesten Steuerung verbunden wird. Die während des Einführens der neuen Druckplatte mit vorgesehenem Potential bzw. der Impulsfolge beaufschlagten Registerstifte bewirken, daß nach Kontakt der Druckplatte, also der registergerechten Anlage, diese ebenfalls das Potential bzw. die Impulsfolge aufweist bzw. einnimmt. Durch ein insbesondere auf die Rückseite der metallischen Druckplatte (Alu) einwirkenden Kontakt ist das Potential bzw. die Impulsfolge abgreifbar und an eine stationäre Auswerteeinheit weiterleitbar.This object is achieved by the characterizing features of claim 1. Further developments of the invention result from the subclaims. According to the invention provides that the in the cylinder (plate cylinder / plate cylinder) electrically insulated register pins with a signal generator in Are connected so that these with pulses of predetermined duration and frequency are acted upon. According to the invention, the signals are routed out via the metallic pressure plate, which is done using a contact grinder, a brush or another voltage tap connected to the control unit fixed to the frame becomes. The provided with the new pressure plate during insertion Potential or the pulse train applied register pins cause that after Contact of the pressure plate, i.e. the register-compliant system, this also the Potential or the pulse train has or occupies. By one in particular this is the contact acting on the back of the metallic pressure plate (aluminum) Potential or the pulse sequence can be tapped and sent to a stationary evaluation unit routable.

Gemäß einer bevorzugten Ausführung der Erfindung ist vorgesehen, daß die elektrisch isoliert gegenüber der Klemmeinrichtung bzw. dem gesamten Zylinder angeordneten Registerstifte über einen im Zylinder angeordneten Signalgeber in Form von Impulsen vorgegebener Dauer und Frequenz auf ein bestimmtes Potential gebracht werden. Dabei kann vorgesehen sein, daß bei zwei im Zylinder angeordneten Registerstiften die Impulsbeaufschlagung (codierte Signale) der einzelnen Registerstifte unterschiedlich ist. Die elektrisch isoliert gegenüber dem Zylinder und der Klemmschiene nebst den Registerstiften zugeführte Druckplatte nimmt nun das Potential bzw. das Potential der Impulsfolge der einzelnen Registerstifte an, je nachdem mit welchem der Registerstifte die Platte zuerst in Kontakt kommt. So ist über die stationäre Auswerteeinheit feststellbar, an welchem der Registerstifte die Druckplatte zuerst registergerecht anliegt und ob dies schließlich auch an beiden der Fall ist. Nur in diesem Fall wird durch eine der Auswerteeinheit nachgeschaltete Steuerung der Klemmvorgang ausgelöst. Mit der Auswerteeinheit kann femer auch eine Anzeigevorrichtung in Signalverbindung stehen, durch welche anzeigbar ist, ob die Druckplatte registergerecht anliegt und an welchem der Registerstifte dies erfolgt.According to a preferred embodiment of the invention it is provided that the electrically isolated from the clamping device or the entire cylinder arranged register pins via a signal transmitter arranged in the cylinder in Form of impulses of predetermined duration and frequency on a certain one Potential. It can be provided that two in the cylinder arranged register pins the impulse (coded signals) of the individual register pins is different. The electrically isolated from the Cylinder and the clamping rail together with the pressure plate fed to the register pins now takes the potential or the potential of the pulse train of the individual register pins depending on which of the register pins the plate is in first Contact comes. The stationary evaluation unit can be used to determine which one of the register pins the printing plate is first in register and whether this is after all, it is the case with both. Only in this case is one of the Evaluation unit downstream control triggered the clamping process. With the The evaluation unit can also have a display device in signal connection stand, by which it can be indicated whether the pressure plate is in register and at which of the register pins this is done.

Das Abgreifen der Signale über insbesondere die Rückseite der Druckplatte kann erfindungsgemäß durch elektrisch leitende Rollen, Schleifer bzw. Bürsten erfolgen. Vorzugsweise wird dabei die vorliegende Erfindung in einem an sich bekannten und in der Beschreibungsanleitung zitierten Druckplattenwechsler angebracht, bei dem die neu zuzuführende Druckplatte vor dem Wechseln in einem Schutz bereitgestellt wird und während des Einführens bzw. während des Aufziehens auf den Zylinder noch mit Teilen des Schutzes in Kontakt steht bzw. durch diesen hindurch gezogen wird.The tapping of the signals on the back of the printing plate in particular can according to the invention by electrically conductive rollers, grinders or brushes. The present invention is preferably in a known manner and printing plate changer cited in the description instructions attached, where the new pressure plate to be fed before changing into protection is provided and during insertion or during Mounting on the cylinder is still in contact with parts of the protection or is pulled through this.

Bei Bogenoffsetdruckmaschinen werden üblicherweise Alu-Druckplatten verwendet, welche auf der nichtdruckenden Rückseite unbeschichtet sind. Ein in an sich bekannter Weise ausgebildeter Druckplattenwechsler kann daher zur Ausführung der vorliegenden Erfindung durch Anbringung einer Rolle, eines Schleifkontaktes bzw. einer elektrisch leitfähigen Bürste erweitert werden. Die Rolle, der Schleifkontakt bzw. die Bürste wird dabei derartig in dem den Druckplattenwechsler bildenden Schutz angeordnet, so daß das elektrische Potential der Druckplatte an der Plattenrückseite abgreifbar und der stationären Auswerte- und Steuereinheit zuführbar ist. Die die Druckplatte leitenden Teile sind elektrisch isoliert ausgeführt, d.h. aus elektrisch nichtleitendem Kunststoff (bzw. beschichtetes Metall). Aluminum printing plates are usually used in sheetfed offset printing machines, which are uncoated on the non-printing back. An in itself Pressure plate changer designed in a known manner can therefore be used the present invention by attaching a roller, a sliding contact or an electrically conductive brush. The role, the sliding contact or the brush is so in the the pressure plate changer forming protection arranged so that the electrical potential of the pressure plate the back of the panel can be tapped and the stationary evaluation and control unit is feedable. The parts that conduct the pressure plate are electrically insulated, i.e. made of electrically non-conductive plastic (or coated metal).

[Beispiele][Examples]

Des weiteren erfolgt die Erläuterung eines Ausführungsbeispiels der Erfindung anhand der Zeichnungen: Es zeigt:

Fig. 1
ein Prinzipschaltbild der vorliegenden Erfindung und
Fig. 2
die Anordnung eines Schleifkontaktes sowie dessen Einwirkung auf die Druckplatten-Rückseite.
Furthermore, an embodiment of the invention is explained using the drawings: It shows:
Fig. 1
a schematic diagram of the present invention and
Fig. 2
the arrangement of a sliding contact and its effect on the back of the printing plate.

Ein prinzipiell angedeuteter Zylinder 1 (Plattenzylinder, Druckformzylinder) weist in einer nicht dargestellten und dem Druckanfang der Druckplatte 6 zugeordneten Klemmeinrichtung zwei Registerstifte 2.1, 2.2 auf, welche elektrisch isoliert gegenüber der Klemmeinrichtung und dem gesamten Zylinder 1 angebracht sind. Die Registerstifte 2.1, 2.2 stehen mit einem Signalgeber 4 in Signalverbindung. Der Signalgeber 4 innerhalb des Zylinders 1 steht ferner mit einer Stromversorgung in Form einer Batterie bzw. eines Akkus in Verbindung. Wie in Figur 1 angedeutet, weist die dem Zylinder 1 zuzuführende Druckplatte 5 an der vorderen Kante zwei U-förmige Ausstanzungen auf, welche in an sich bekannter Weise mit den Registerstiften 2.1, 2.2 zusammenwirken. Der Rückseite der Druckplatte 5 ist ein Kontakt 6 zugeordnet, über den das Potential der Druckplatte 5 abgreifbar und einer gestellfest angeordneten Auswerteeinheit 7 zuführbar ist. Die Auswerteeinheit 7 steht mit einer Anzeige 9 in Signalverbindung, ausgangsseitig ferner auch mit einer Steuerung 8, durch welche der gesamte Druckplattenwechselvorgang und insbesondere das Öffnen und Schließen der Druckanfang-Klemmeinrichtung im Zylinder 1 auslösbar ist.A cylinder 1 (plate cylinder, printing form cylinder) indicated in principle points in one not shown and assigned to the start of printing of the printing plate 6 Clamping device two register pins 2.1, 2.2, which are electrically insulated opposite the clamping device and the entire cylinder 1 are attached. The register pins 2.1, 2.2 are in signal connection with a signal generator 4. The signal generator 4 within the cylinder 1 is also connected to a power supply in the form of a battery. As in Figure 1 indicated, the pressure plate 5 to be fed to the cylinder 1 has on the front Edge two U-shaped cut-outs, which in a manner known per se the register pins 2.1, 2.2 work together. The back of the pressure plate 5 is assigned a contact 6, via which the potential of the pressure plate 5 can be tapped and an evaluation unit 7 arranged fixed to the frame can be fed. The evaluation unit 7 is in signal connection with a display 9, and also on the output side with a controller 8, through which the entire printing plate change process and in particular the opening and closing of the pressure start clamping device can be triggered in cylinder 1.

Durch die im Zylinder 1 angeordnete Stromversorgung 3 sowie dem Signalgeber 4 sind die elektrisch isoliert angebrachten Registerstifte 2.1, 2.2 insbesondere in Form von Impulsen auf ein vorgegebenes elektrisches Potential verbringbar. Vorzugsweise sind die Registerstifte 2.1, 2.2 in unterschiedlicher Weise mit Impulsen beaufschlagbar, so daß diese Impulse in Summenform über den Kontakt 6 (Rückseite der Druckplatte 5) der stationären Auswerteeinheit 7 zuführbar sind. So ist durch die Auswerteeinheit 7 auch feststellbar, an welchem der Registerstifte 2.1, 2.2 die Druckplatte 5 registergerecht anliegt und an welchem der Stifte dies nicht der Fall ist. Figur 1 zeigt dabei die Stellung der Druckplatte 1 ohne Kontakt mit den elektrisch isoliert im Zylinder 1 angeordneten Registerstiften 2.1, 2.2.Due to the power supply 3 arranged in the cylinder 1 and the signal generator 4 are the electrically insulated register pins 2.1, 2.2 especially in Form of pulses can be brought to a predetermined electrical potential. The register pins 2.1, 2.2 are preferably included in different ways Impulses can be applied so that these impulses in sum form over the contact 6 (rear side of the pressure plate 5) of the stationary evaluation unit 7 can be fed. In this way, the evaluation unit 7 can also determine which of the register pins 2.1, 2.2 the pressure plate 5 is in register and on which of the pins this is not the case. Figure 1 shows the position of the pressure plate 1 without contact with the register pins 2.1, 2.2 arranged electrically insulated in the cylinder 1.

Figur 2 zeigt eine Seitenansicht eines Teiles des Zylinders 1 mit der an den elektrisch isolierten Registerstiften 2.1, 2.2 anliegenden Druckplatte 5. Die Druckplatte 5 wird durch einen nicht dargestellten Schutz über eine mit der druckenden Seite der Druckplatte 5 zusammenwirkenden Rolle 10 dem Zylinder 1 zugeführt. Die Führungsrolle 10 ist dabei vorzugsweise aus elektrisch isoliertem Material gefertigt und trägt die Druckplatte 5 auf deren druckenden Seite. Der drehbaren Rolle 10 im nicht dargestellten Schutz gegenüberliegend und somit mit der nicht beschichteten Rückseite der Druckplatte 5 zusammenwirkend ist in Form eines Schleifkontaktes, einer elektrisch leitenden Rolle oder einer Bürste ein Kontakt 6 angebracht, durch den das elektrische Potential der Registerstifte 2.1, 2.2 erfaßbar und an die stationäre Auswerteeinheit 7 weiterleitbar ist. Nachdem durch die stationäre Auswerteeinheit 7 durch Erfassen des elektrischen Potentials der Druckplatte 5 gemäß Beaufschlagung der Registerstifte 2.1, 2.2 die reigstergerechte Anlage festgestellt wurde, wird die Klemmeinrichtung im Zylinder 1 geschlossen und die Druckplatte 5 auf den Zylinder 1 aufgezogen. Figure 2 shows a side view of a part of the cylinder 1 with the to electrically insulated register pins 2.1, 2.2 adjacent pressure plate 5. The pressure plate 5 is protected by a not shown over a with the printing Side of the pressure plate 5 cooperating roller 10 fed to the cylinder 1. The guide roller 10 is preferably made of electrically insulated material manufactured and carries the printing plate 5 on its printing side. The rotatable Roll 10 opposite in the protection, not shown, and thus with the not Coated back of the pressure plate 5 is cooperating in the form of a Sliding contact, an electrically conductive roller or a brush a contact 6 attached through which the electrical potential of the register pins 2.1, 2.2 can be detected and can be forwarded to the stationary evaluation unit 7. After through the stationary evaluation unit 7 by detecting the electrical potential of the Pressure plate 5 according to the application of register pins 2.1, 2.2 the auctioneer-friendly System was determined, the clamping device in cylinder 1 is closed and the pressure plate 5 mounted on the cylinder 1.

[Bezugszeichenliste][REFERENCE LIST]

11
Zylinder (Plattenzylinder, Formzylinder)Cylinder (plate cylinder, forme cylinder)
2.12.1
Registerstiftregister pin
2.22.2
Registerstiftregister pin
33
Stromversorgungpower supply
44
Signalgebersignaler
55
Druckplatteprinting plate
66
Kontakt (Schleifkontakt, Kontaktrolle, Bürste)Contact (sliding contact, contact roller, brush)
77
Auswerteeinheitevaluation
88th
Steuerungcontrol
99
Anzeigedisplay
1010
Führungsrolle (Druckplatte 5)Guide roller (pressure plate 5)

Claims (8)

  1. Device for register checking for the cylinder of a printing press, particularly for the plate or forme cylinders in an offset rotary printing press, with a register pin fitted electrically insulated with respect to the cylinder, from which a signal can be extracted if an electrically conducting printing forme lies against this in correct register, as well as a stationary evaluation unit receiving this signal, characterised in that a signal emitter (4) is fitted to the register pin (2.1, 2.2) by means of which the printing forme (5) can be brought via the register pin (2.1, 2.2) to a preset potential and that the stationary evaluation unit (7) is already in electrical contact with the printing forme (5) to determine the potential via a contact (6).
  2. Device according to Claim 1, characterised in that the contact (6) cooperates with the rear side of the printing forme (5).
  3. Device according to Claim 1 or 2, characterised in that the contact (6) is constructed as a sliding contact.
  4. Device according to Claim 1 or 2, characterised in that the contact (6) is constructed as an electrically conducting contact roller.
  5. Device according to Claim 1 or 2, characterised in that the contact (6) is constructed as an electrically conducting brush.
  6. Device according to one of the preceding Claims, characterised in that fitted to the contact (6) is a support roller (10) acting on the printing side of the printing forme (5).
  7. Device according to one of the preceding Claims, characterised in that the register pin (2.1, 2.2) can be subjected by means of the signal emitter (4) to a predetermined pulse sequence.
  8. Device according to one of the preceding Claims, characterised in that in the case of two register pins (2.1, 2.2) arranged in the cylinde (1), these can be subjected via the signal emitter (4) to pulses in differing fashion and that these pulses can be evaluated separately by means of the evaluation unit (7).
EP99115435A 1998-08-28 1999-08-05 Register control device Expired - Lifetime EP0982130B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19839149A DE19839149C1 (en) 1998-08-28 1998-08-28 Monitoring in-register plate positioning for printing machine cylinder
DE19839149 1998-08-28

Publications (2)

Publication Number Publication Date
EP0982130A1 EP0982130A1 (en) 2000-03-01
EP0982130B1 true EP0982130B1 (en) 2002-10-30

Family

ID=7879004

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Application Number Title Priority Date Filing Date
EP99115435A Expired - Lifetime EP0982130B1 (en) 1998-08-28 1999-08-05 Register control device

Country Status (5)

Country Link
US (1) US6032581A (en)
EP (1) EP0982130B1 (en)
JP (1) JP3148204B2 (en)
AT (1) ATE226889T1 (en)
DE (2) DE19839149C1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691616B2 (en) * 1999-05-07 2004-02-17 Heidelberger Druckmaschinen Ag Device for detecting the position of a printing plate on a cylinder of a rotary printing machine
DE10015727A1 (en) * 2000-03-29 2001-10-04 Koenig & Bauer Ag Abrasive, conductive, locating dowels for electrical checking of printing plate alignment on platen press engage with locating holes in plate to assure correct lateral and peripheral register
DE102007005338B3 (en) * 2007-02-02 2008-04-17 Maschinenfabrik Wifag Rotary printing machine for detecting linings with bent-off part errors has a cylinder with a cylinder channel, a lining with an insertable proof copy and a lining storage device
DE102009052093A1 (en) 2008-12-02 2010-06-17 Heidelberger Druckmaschinen Ag Method and device for automatically feeding printing plates
US20110192303A1 (en) * 2010-02-05 2011-08-11 Hines Ryan K Detection of misregistered printing plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129022A1 (en) * 1991-08-31 1993-03-11 Heidelberger Druckmasch Ag MAGAZINE FOR AUTOMATIC CHANGE OF PRINTING PLATES
JP3194199B2 (en) * 1992-01-17 2001-07-30 株式会社小森コーポレーション Plate mounting device on plate cylinder
DE4223908C2 (en) * 1992-06-30 1995-09-28 Lehner Gmbh Clamping device for clamping and adjusting a printing plate on a plate cylinder
DE4338664C2 (en) * 1993-11-12 1995-09-14 Roland Man Druckmasch Method and device for controlling an automated printing plate changing process in printing machines
DE4339344C1 (en) * 1993-11-18 1995-03-30 Roland Man Druckmasch Device for the automated exchange of printing plates in a printing machine
DE4439623C2 (en) * 1994-11-05 1999-01-14 Roland Man Druckmasch Process for the automatic feeding of printing plates

Also Published As

Publication number Publication date
DE19839149C1 (en) 2000-01-20
EP0982130A1 (en) 2000-03-01
JP2000135778A (en) 2000-05-16
ATE226889T1 (en) 2002-11-15
JP3148204B2 (en) 2001-03-19
US6032581A (en) 2000-03-07
DE59903232D1 (en) 2002-12-05

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