EP0724958A1 - Printing machine with withdrawable parts - Google Patents

Printing machine with withdrawable parts Download PDF

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Publication number
EP0724958A1
EP0724958A1 EP96100422A EP96100422A EP0724958A1 EP 0724958 A1 EP0724958 A1 EP 0724958A1 EP 96100422 A EP96100422 A EP 96100422A EP 96100422 A EP96100422 A EP 96100422A EP 0724958 A1 EP0724958 A1 EP 0724958A1
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EP
European Patent Office
Prior art keywords
printing machine
machine according
sensor
magnetic field
roller
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Granted
Application number
EP96100422A
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German (de)
French (fr)
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EP0724958B2 (en
EP0724958B1 (en
Inventor
Michael Reising
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Manroland AG
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MAN Roland Druckmaschinen AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0018—Protection means against injury to the operator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/20—Safety devices preventing damage

Definitions

  • the invention relates to a printing press with removable components according to the preamble of claim 1.
  • Printing presses in particular sheetfed offset printing presses, often have a large number of removable or replaceable components.
  • removable and / or replaceable components are the ink / dampening agent rollers of the inking / dampening units, metering devices for inking units, dampening units, coating units, or additional ones Interchangeable sheet guiding devices called printing material properties called devices for sheet feeding, sheet depositing and the like.
  • a roller bearing for inking, dampening or coating unit rollers is known, which removably receives the corresponding roller.
  • metering and application devices for fluid media of different viscosities preferably different types of lacquer, are known, in which either a metering roller with an application roller (low-viscosity media) or a chambered doctor blade with a rastered application roller (higher viscosity) Media) interacts.
  • the components mentioned are removably arranged between the side frame walls of the printing unit.
  • a disadvantage of printing presses with removable components is that, particularly from a machine control center, it cannot be seen that the corresponding component is missing.
  • a removed inking, dampening or coating unit roller can possibly lead to considerable malfunctions.
  • the chambered doctor blade in addition to the rastered application roller, is replaced by a metering roller and an application roller with a smooth surface, and if the metering roller is forgotten to be placed in the corresponding warehouse, then an automatic coating supply leads to considerable contamination of the underlying one Machine parts, especially the arch-guiding elements.
  • the evaluation unit can be connected to the control station of the printing press, so that it can be displayed on a display device (monitor) of the control station that the corresponding component is not installed.
  • the evaluation unit can be in operative connection with a plurality of sensors corresponding to the plurality of removable components, so that it can then also be displayed via the control station, for example from which printing unit which roller has been removed.
  • the evaluation unit blocks the main drive of the printing press against starting.
  • the invention is described in detail on a removable roller of an inking, dampening or coating unit.
  • the present invention is not limited to such an embodiment.
  • the principle of the invention can also be used, for example, in the case of a removable doctor blade apply.
  • a permanent magnet is then attached to the chamber doctor blade (at a suitable location), to which a sensor that detects a magnetic field is assigned corresponding to the frame, corresponding to the position of the permanent magnet in the installed state of the chamber doctor blade.
  • a permanent magnet is then attached to the chamber doctor blade (at a suitable location), to which a sensor that detects a magnetic field is assigned corresponding to the frame, corresponding to the position of the permanent magnet in the installed state of the chamber doctor blade.
  • other removable components can also be provided with a permanent magnet, to which a simple, inexpensive sensor is correspondingly assigned.
  • At least two permanent magnets are attached to one another with a removable chambered doctor blade lying close together. These permanent magnets are scanned by a sensor that is fixed to the frame and has, for example, two reed contacts connected in series. An evaluation of the switching state of the reed contacts preferably takes place within a short time interval, so that the correct installation state of the chambered doctor blade can be determined in a safety-relevant manner.
  • a roller 1 of an inking, dampening or coating unit has a pin 2 at each of its two ends, on each of which an annular bearing 4 is placed.
  • Fig. 1 shows one end of the roller 1 with a pin 2 and a bearing 4.
  • the pin 2 is inserted with the attached bearing 4 in an upwardly open, U-shaped bearing shell 5, which in turn on a side frame wall 6 of the Printing or coating unit is appropriate.
  • the bearing arrangement described so far with reference to FIG. 1 is corresponding on the opposite side frame wall, not shown here.
  • a permanent magnet 3 is embedded flat in a corresponding recess to the surface of this end wall.
  • a sensor 8, which detects the magnetic field of the permanent magnet 3, is likewise inserted coaxially to the axis of the roller 1 in a corresponding bore 7 in the U-shaped bearing shell 5.
  • the roller 1 can be removed at the top.
  • the permanent magnet 3 is thus opposite the measuring field surface of the sensor 8, so that a signal can be taken from it.
  • the sensor 8 can be a suitable sensor that detects a magnetic field, for example in a simple form a reed contact or a sensor that works according to the magnetoresistive principle. If the roller 1 is removed, no magnetic field can be detected by the sensor 8, so that the removed state of the roller 1 can be determined in this way.
  • a groove 9 is machined into the rear of the U-shaped bearing shell 5 facing away from the roller 1 and opens into the bore 7 in the manner of a stitch.
  • the sensor 8 can preferably be designed in the manner of a tube sensor, i.e. be made cylindrical and provided with an external thread.
  • the bore 7 is then provided with a thread, so that the sensor 8 is simply screwed into this bore 7.
  • FIG. 2 shows an example of the connection of a plurality of sensors in a printing machine (not shown) to an evaluation unit 10.
  • Each sensor 8 is preferably connected to the evaluation unit 10 so that it can be queried individually.
  • the evaluation unit 10 is also operatively connected to a control station 11 for controlling the printing machine, not shown.
  • the evaluation unit 10 is designed to generate a signal precisely when one of the sensors 8 does not receive a signal from a permanent magnet, that is to say the corresponding component is not installed.
  • About the indicated display device of the Control center 1 in the form of a monitor can thus be indicated which of the sensors 8 receives no signal, that is to say which component is missing, in particular in which printing unit.
  • the evaluation unit 10 is also operatively connected to the electric drive 12 of the printing press, not shown.
  • Those sensors 8 that are assigned to components that are particularly relevant to safety or function can then use the evaluation unit 10 to block the drive 12 against the printing machine (not shown) starting up.
  • a corresponding error message is also displayed on the display device of the control center 11, together with an indication of which component is missing.
  • the evaluation of the sensor or sensors 8 is carried out by the evaluation unit 12 depending on whether the function to which the corresponding component belongs is also selected. This means, for example, that an inking roller may be missing in a non-printing printing unit, whereas in a connected printing unit the lack of a component blocks the printing machine against starting.
  • Fig. 3 shows an arrangement for interrogating a chamber doctor blade 13.
  • two permanent magnets 3 are embedded on the end face, each of which has a pole face flush with the housing surface.
  • a sensor 8 is attached opposite the permanent magnets, which, as indicated, has two reed contacts 14 in its interior which can be switched separately by the two permanent magnets 3 when the chamber doctor blade 13 is correctly installed.
  • the sensor is connected to the evaluation unit 10, which interrogates the switching state of the reed contacts 14, preferably within a short time interval.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Ink Jet (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

The print machine, especially offset printers with exchangeable components such as colour, moisture and paint drums has an integrity test facility to check for the correct assembly of its components. Each removable component (1) has a permanent magnet (3). The resulting magnetic field is detected by a sensor (8) which generates a signal which is passed to a check unit. The sensor is fixed in a trunnion or locating journal (5) of the print drum or other component.

Description

Die Erfindung betrifft eine Druckmaschine mit herausnehmbaren Bauteilen gemäß dem Oberbegriff von Anspruch 1.The invention relates to a printing press with removable components according to the preamble of claim 1.

Druckmaschinen, insbesondere Bogenoffsetdruckmaschinen weisen häufig eine Vielzahl von heraus- bzw. auswechselbaren Bauteilen auf Als Beispiele für herausnehmbare und / oder auswechselbare Bauteile seien hier die farb-/feuchtmitteführenden Walzen der Farb-/Feuchtwerke, Dosiereinrichtungen für Farbwerke, Feuchtwerke, Lackiereinrichtungen zusätzliche oder entsprechend den Bedruckstoffeigenschatten austauschbare Bogenführungseinrichtungen Einrichtungen für die Bogenzufuhr, die Bogenablage und dergleichen genannt.Printing presses, in particular sheetfed offset printing presses, often have a large number of removable or replaceable components. Examples of removable and / or replaceable components are the ink / dampening agent rollers of the inking / dampening units, metering devices for inking units, dampening units, coating units, or additional ones Interchangeable sheet guiding devices called printing material properties called devices for sheet feeding, sheet depositing and the like.

Aus der DE 42 40 487 C1 ist eine Walzenlagerung für Farb-, Feucht- oder Lackwerkwalzen bekannt, welche die entsprechende Walze herausnehmbar aufnimmt. Aus der DE 43 24 631 A1 sowie der DE 43 34 803 C1 sind Dosier- und Aufbringvorrichtungen für fluide Medien unterschiedlicher Viskosität vorzugsweise verschiedene Lackarten bekannt, bei welchen entweder eine Dosierwalze mit einer Auftragwalze (niederviskose Medien) oder ein Kammerrakel mit einer gerasterten Auftragwalze (höherviskose Medien) zusammenwirkt. Die genannten Bauteile sind entnehmbar zwischen den Seitengestellwänden des Druckwerkes angeordnet. Nachteilig bei Druckmaschinen mit entnehmbaren Bauteilen ist dabei, daß insbesondere von einem Maschinenleitstand her nicht erkennbar ist, daß das entsprechende Bauteil fehlt. Bei einem Offset- oder einem Lackdruckwerk kann eine entnommene Farb-, Feucht- oder Lackwerkwalze unter Umständen zu erheblichen Funktionsstörungen führen. Wird zum Beispiel bei einem Lackwerk der oben genannten Art die Kammerrakel nebst der gerasterten Auftragwalze gegen eine Dosierwalze und eine mit glatter Oberfläche versehenen Auftragwalze ausgetauscht und vergessen die Dosierwalze in die entsprechenden Lager einzulegen, so kommt es bei einer automatischen Lackzufuhr zu einer erheblichen Verunreinigung der darunterliegenden Mashinenteile, insbesondere der bogenführenden Elemente. Wird in einem Farb- oder Feuchtwerk eine Walze entnommen um diese gegen eine andere auszutauschen, diese jedoch versehentlich nicht in die entsprechende Lagerung eingelegt, so kommt es auch in diesem Fall zu erheblichen Betriebsstörungen, da der Farb- und/oder Feuchtmittelfluß gestört wenn nicht sogar unmöglich gemacht wird. Ferner sei darauf hingewiesen, daß bei Herausnahme bestimmter Bauteile Maschinen- oder sogar Personenschäden nicht auszuschließen sind.From DE 42 40 487 C1 a roller bearing for inking, dampening or coating unit rollers is known, which removably receives the corresponding roller. From DE 43 24 631 A1 and DE 43 34 803 C1, metering and application devices for fluid media of different viscosities, preferably different types of lacquer, are known, in which either a metering roller with an application roller (low-viscosity media) or a chambered doctor blade with a rastered application roller (higher viscosity) Media) interacts. The components mentioned are removably arranged between the side frame walls of the printing unit. A disadvantage of printing presses with removable components is that, particularly from a machine control center, it cannot be seen that the corresponding component is missing. In the case of an offset or a coating printing unit, a removed inking, dampening or coating unit roller can possibly lead to considerable malfunctions. If, for example, in a coating unit of the type mentioned above, the chambered doctor blade, in addition to the rastered application roller, is replaced by a metering roller and an application roller with a smooth surface, and if the metering roller is forgotten to be placed in the corresponding warehouse, then an automatic coating supply leads to considerable contamination of the underlying one Machine parts, especially the arch-guiding elements. If a roller is removed from an inking or dampening unit in order to replace it with another, but it is not inadvertently placed in the corresponding storage, this also leads to considerable operational disturbances, since the flow of ink and / or dampening solution is disturbed, if not even is made impossible. Furthermore, it should be pointed out that machine or even personal injury cannot be excluded if certain components are removed.

Ausgehend hiervon ist es Aufgabe der vorliegenden Erfindung eine Druckmaschine gemäß dem Oberbegriff von Anspruch 1 derartig zu erweitern, so daß mit einfachen Mitteln feststellbar ist, ob ein Bauteil eingebaut ist oder nicht.Proceeding from this, it is an object of the present invention to expand a printing press according to the preamble of claim 1 such that it can be determined with simple means whether a component is installed or not.

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

Gemaß der Erfindung ist vorgesehen, an dem herausnehmbaren Bauteil wenigstens eine ein Magnetfeld erzeugende Einrichtung anzuordnen, insbesondere in Form von Permanentmagneten. Gestellfest ist, korrespondierend zu der Position des oder Permanentmagneten im eingebauten Zustand des betreffenden Bauteiles ein diese Magnetfelder detektierender Sensor angeordnet, dem ein Signal entnehmbar und einer nachgeschalteten Auswerteeinheit zuführbar ist. Diese Auswerteeinheit kann mit dem Leitstand der Druckmaschine in Verbindung stehen, so daß aufeiner Anzeigeeinrichtung (Monitor) des Leitstandes anzeigbar ist, daß das entsprechende Bauteil nicht eingebaut ist. Die Auswerteeinheit kann dabei mit mehreren Sensoren entsprechend den mehreren herausnehmbaren Bauteilen in Wirkverbindung stehen, so daß dann über den Leitstand auch darstellbar ist, beispielsweise an welchem Druckwerk welche Walze entnommen worden ist. Gemaß einer weiteren vorteilhaften Ausbildung der Erfindung kann vorgesehen sein, daß bei Entnahme besonders sicherheitsrelevanter Bauteile die Auswerteeinheit den Hauptantrieb der Druckmaschine gegen ein Anlaufen sperrt.According to the invention it is provided to arrange at least one device generating a magnetic field on the removable component, in particular in the form of permanent magnets. Fixed to the frame, corresponding to the position of the or permanent magnet in the installed state of the component in question, is a sensor that detects these magnetic fields, from which a signal can be taken and fed to a downstream evaluation unit. This evaluation unit can be connected to the control station of the printing press, so that it can be displayed on a display device (monitor) of the control station that the corresponding component is not installed. The evaluation unit can be in operative connection with a plurality of sensors corresponding to the plurality of removable components, so that it can then also be displayed via the control station, for example from which printing unit which roller has been removed. According to a further advantageous embodiment of the invention, it can be provided that when particularly safety-relevant components are removed, the evaluation unit blocks the main drive of the printing press against starting.

In weiter unten stehenden Ausführungsbeispielen wird die Erfindung ausführlich an einer entnehmbaren Walze eines Farb-, Feucht- oder Lackierwerkes beschrieben. Auf eine derartige Ausgestaltung sei die vorliegende Erfindung aber nicht beschränkt. Das erfindungsgemäße Prinzip läßt sich ebenfalls beispielsweise bei einer entnehmbaren Kammerrakel anwenden. Entsprechend dem Erfindungsgedanken ist dann an der Kammerrakel (an geeigneter Stelle) ein Permanentmagnet angebracht, dem gestellfest korrespondierend entsprechend der Position des Permanentmagneten im eingebauten Zustand der Kammerrakel ein Magnetfeld detektierender Sensor zugeordnet ist. In dieser Weise lassen sich auch andere entnehmbare Bauteile mit einem Permanentmagneten versehen, denen entsprechend ein einfacher, preisgünstiger Sensor zugeordnet wird.In exemplary embodiments below, the invention is described in detail on a removable roller of an inking, dampening or coating unit. However, the present invention is not limited to such an embodiment. The principle of the invention can also be used, for example, in the case of a removable doctor blade apply. In accordance with the concept of the invention, a permanent magnet is then attached to the chamber doctor blade (at a suitable location), to which a sensor that detects a magnetic field is assigned corresponding to the frame, corresponding to the position of the permanent magnet in the installed state of the chamber doctor blade. In this way, other removable components can also be provided with a permanent magnet, to which a simple, inexpensive sensor is correspondingly assigned.

Nach einer Weiterbildung der Erfindung ist vorgesehen, daß bei einem herausnehmbaren Kammerrakel dicht nebeneinanderliegend wenigstens zwei Permanentmagneten angebracht sind. Diese Permanentmagneten werden durch einen gestellfesten Sensor, der bspw. zwei Reed-Kontakten in Reihe geschaltet aufweist, abgefragt. Dabei findet vorzugsweise noch eine Auswertung des Schaltzustandes der Reed-Kontakte innerhalb eines kurzen Zeitintervalles statt, so daß der korrekte Einbauzustand des Kammerrakels in sicherheitsrelevanter Weise feststellbar ist.According to a development of the invention, it is provided that at least two permanent magnets are attached to one another with a removable chambered doctor blade lying close together. These permanent magnets are scanned by a sensor that is fixed to the frame and has, for example, two reed contacts connected in series. An evaluation of the switching state of the reed contacts preferably takes place within a short time interval, so that the correct installation state of the chambered doctor blade can be determined in a safety-relevant manner.

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

Es zeigt:

Fig. 1
die Anordnung eines Permanentmagneten in einer Walze mit dem Sensor im Walzenlager,
Fig. 2
die Verbindung mehrerer Sensoren mit einer Auswerteeinheit und
Fig. 3
eine Vorrichtung zur Abfrage eines Kammerrakels.
It shows:
Fig. 1
the arrangement of a permanent magnet in a roller with the sensor in the roller bearing,
Fig. 2
the connection of several sensors with one evaluation unit and
Fig. 3
a device for interrogating a chambered doctor blade.

Eine Walze 1 eines Farb-, Feucht- oder Lackierwerkes weist an ihren beiden Enden jeweils einen Zapfen 2 auf, an dem jeweils ein ringförmiges Lager 4 aufgesetzt ist. Fig. 1 zeigt dabei das eine Ende der Walze 1 mit einem Zapfen 2 und einem Lager 4. Der Zapfen 2 ist mit dem daran angebrachten Lager 4 in einer nach oben offenen, U-förmigen Lagerschale 5 eingelegt, welche ihrerseits an einer Seitengestellwand 6 des Druck- oder Lackierwerkes angebracht ist. Die bis hierhin anhand der Fig. 1 beschriebenen Lageranordnung ist an der gegenüberliegenden, hier nicht gezeigten Seitengestellwand entsprechend.A roller 1 of an inking, dampening or coating unit has a pin 2 at each of its two ends, on each of which an annular bearing 4 is placed. Fig. 1 shows one end of the roller 1 with a pin 2 and a bearing 4. The pin 2 is inserted with the attached bearing 4 in an upwardly open, U-shaped bearing shell 5, which in turn on a side frame wall 6 of the Printing or coating unit is appropriate. The bearing arrangement described so far with reference to FIG. 1 is corresponding on the opposite side frame wall, not shown here.

Gemäß der Anordnung in Fig. 1 ist an der einen Stirnwand des Zapfens 2 in Achsmitte der Walze 1 ein Permanentmagnet 3 plan zur Oberfläche dieser Stirnwand in einer entsprechenden Ausnehmung eingelassen. In einer entsprechenden Bohrung 7 der U-förmigen Lagerschale 5 ist ebenfalls koaxial zur Achse der Walze 1 im eingebauten Zustand ein das Magnetfeld des Permanentmagneten 3 detektierender Sensor 8 eingelassen.According to the arrangement in FIG. 1, on one end wall of the pin 2 in the center of the axis of the roller 1, a permanent magnet 3 is embedded flat in a corresponding recess to the surface of this end wall. A sensor 8, which detects the magnetic field of the permanent magnet 3, is likewise inserted coaxially to the axis of the roller 1 in a corresponding bore 7 in the U-shaped bearing shell 5.

Gemäß der in Fig. 1 gezeigten beispielhatten Ausbildung der U-förmigen, nach oben offenen Lagerschale 5 ist die Walze 1 nach oben herausnehmbar. Im eingelegten Zustand der Walze 1 liegt somit der Permanentmagnet 3 der Meßfeldoberfläche des Sensors 8 gegenüber, so daß diesem ein Signal entnehmbar ist. Bei dem Sensor 8 kann es sich dabei um einen geeigneten, ein Magnetfeld detektierenden Sensor handeln, beispielsweise in einfacher Form um einen Reed-Kontakt oder um einen Sensor, der nach dem magnetoresistiven Prinzip arbeitet. Wird die Walze 1 herausgenommen, so kann durch den Sensor 8 kein Magnetfeld erfaßt werden, so daß aufdiese Weise der ausgebaute Zustand der Walze 1 feststellbar ist.According to the exemplary embodiment shown in FIG. 1 of the U-shaped bearing shell 5 which is open at the top, the roller 1 can be removed at the top. In the inserted state of the roller 1, the permanent magnet 3 is thus opposite the measuring field surface of the sensor 8, so that a signal can be taken from it. The sensor 8 can be a suitable sensor that detects a magnetic field, for example in a simple form a reed contact or a sensor that works according to the magnetoresistive principle. If the roller 1 is removed, no magnetic field can be detected by the sensor 8, so that the removed state of the roller 1 can be determined in this way.

Zur Herausleitung der nicht mit Bezugszeichen versehenen Anschlußdrähte des Sensors 8 ist an der der Walze 1 abgewandten Rückseite der U-förmigen Lagerschale 5 eine Nut 9 eingearbeitet, welche nach Art eines Stiches in die Bohrung 7 mündet. Der Sensor 8 kann vorzugsweise nach Art eines Rohr-Sensors ausgebildet, d.h. zylinderförmig gefertigt und mit einem Außengewinde versehen sein. Entsprechend ist dann die Bohrung 7 mit einem Gewinde versehen, so daß der Sensor 8 einfach in diese Bohrung 7 eingedreht wird.In order to lead out the connecting wires of the sensor 8, which are not provided with reference numerals, a groove 9 is machined into the rear of the U-shaped bearing shell 5 facing away from the roller 1 and opens into the bore 7 in the manner of a stitch. The sensor 8 can preferably be designed in the manner of a tube sensor, i.e. be made cylindrical and provided with an external thread. Correspondingly, the bore 7 is then provided with a thread, so that the sensor 8 is simply screwed into this bore 7.

Fig. 2 zeigt beispielhalt die Verschaltung mehrerer Sensoren in einer nicht dargestellten Druckmaschine mit einer Auswerteeinheit 10. Vorzugsweise ist hierbei jeder Sensor 8 einzeln abfragbar mit der Auswerteeinheit 10 verbunden. Die Auswerteeinheit 10 steht ferner in Wirkverbindung mit einem Leitstand 11 zur Steuerung der nicht dargestellten Druckmaschine. Die Auswerteeinheit 10 ist dazu ausgebildet, genau dann ein Signal zu generieren, wenn einer der Sensoren 8 kein Signal eines Permanentmagneten empfängt, also das entsprechende Bauteil nicht eingebaut ist. Über die angedeutete Anzeigeeinrichtung des Leitstandes 1 in Form eines Monitores ist somit anzeigbar, welcher der Sensoren 8 kein Signal empfängt, also welches Bauteil insbesondere in welchem Druckwerk fehlt.2 shows an example of the connection of a plurality of sensors in a printing machine (not shown) to an evaluation unit 10. Each sensor 8 is preferably connected to the evaluation unit 10 so that it can be queried individually. The evaluation unit 10 is also operatively connected to a control station 11 for controlling the printing machine, not shown. The evaluation unit 10 is designed to generate a signal precisely when one of the sensors 8 does not receive a signal from a permanent magnet, that is to say the corresponding component is not installed. About the indicated display device of the Control center 1 in the form of a monitor can thus be indicated which of the sensors 8 receives no signal, that is to say which component is missing, in particular in which printing unit.

Gemäß Fig. 2 ist dargestellt, daß die Auswerteeinheit 10 ferner mit dem elektrischen Antrieb 12 der nicht dargestellten Druckmaschine in Wirkverbindung steht. Diejenigen Sensoren 8, die besonders sicherheits- oder funktionsrelevanten Bauteilen zugeordneten sind, können dann über die Auswerteeinheit 10 ein Blockieren des Antriebes 12 gegen ein Anlaufen der nicht dargestellten Druckmaschine veranlassen. Dabei kommt es ebenfalls über die Anzeigeeinrichtung des Leitstandes 11 zur Wiedergabe einer entsprechenden Fehlermeldung nebst Angabe, welches Bauteil fehlt.According to FIG. 2 it is shown that the evaluation unit 10 is also operatively connected to the electric drive 12 of the printing press, not shown. Those sensors 8 that are assigned to components that are particularly relevant to safety or function can then use the evaluation unit 10 to block the drive 12 against the printing machine (not shown) starting up. A corresponding error message is also displayed on the display device of the control center 11, together with an indication of which component is missing.

Erfindungsgemäß erfolgt die Abfrage des oder der Sensoren 8 durch die Auswerteeinheit 12 in Abhängigkeit, ob die Funktion, zu der das entsprechende Bauteil gehört, auch angewählt ist. Dies bedeutet bspw., daß in einem nicht druckenden Druckwerk eine Farbwerkwalze fehlen kann, wohingegen in einem zugeschalteten Druckwerk das Fehlen eines Bauteiles die Druckmaschine gegen ein Anlaufen sperrt.According to the invention, the evaluation of the sensor or sensors 8 is carried out by the evaluation unit 12 depending on whether the function to which the corresponding component belongs is also selected. This means, for example, that an inking roller may be missing in a non-printing printing unit, whereas in a connected printing unit the lack of a component blocks the printing machine against starting.

Fig. 3 zeigt eine Anordnung zur Abfrage eines Kammerrakels 13. Am Gehäuse des Kammerrakels 13 sind stirnseitig zwei Permanentmagnete 3 eingelassen, derenjeweils eine Polfläche plan mit der Gehäuseoberfläche abschließt. An einer nicht dargestellten Gestellwand des Lackwerkes ist den Permanentmagneten gegenüberliegend ein Sensor 8 angebracht, welcher wie angedeutet, zwei Reed-Kontakte 14 in seinem Inneren durch die zwei Permanentmagnete 3 bei korrekter Einbaulage des Kammerrakels 13 getrennt schaltbar aufweist. Der Sensor ist mit der Auswerteeinheit 10 verbunden, welche den Schaltzustand der Reed-Kontakte 14 vorzugsweise innerhalb eines kurzen Zeitintervalles abfragt.Fig. 3 shows an arrangement for interrogating a chamber doctor blade 13. On the housing of the chamber doctor blade 13, two permanent magnets 3 are embedded on the end face, each of which has a pole face flush with the housing surface. On a frame wall of the coating unit, not shown, a sensor 8 is attached opposite the permanent magnets, which, as indicated, has two reed contacts 14 in its interior which can be switched separately by the two permanent magnets 3 when the chamber doctor blade 13 is correctly installed. The sensor is connected to the evaluation unit 10, which interrogates the switching state of the reed contacts 14, preferably within a short time interval.

BezugszeichenlisteReference list

11
Walzeroller
22nd
ZapfenCones
33rd
PermanentmagnetenPermanent magnets
44th
Lagercamp
55
LagerschaleBearing shell
66
SeitengestellwandSide frame wall
77
Bohrungdrilling
88th
Sensorsensor
99
NutGroove
1010th
AuswerteeinheitEvaluation unit
1111
LeitstandControl center
1212th
Antriebdrive
1313
KammerrakelChamber squeegee
1414
Reed-KontaktReed contact

Claims (10)

Druckmaschine, insbesondere Bogenoffsetdruckmaschine, welche herausnehmbare Bauteile wie insbesondere farb- und/oder feuchtmittelführende Walzen, Zuführ- und Dosiereinrichtungen wie Kammerrakel, Dosier- und Auftragwalzen für Lackiereinrichtungen oder dergl. aufweist,
dadurch gekennzeichnet,
daß das herausnehmbare Bauteil wenigstens eine ein permanentes Magnetfeld erzeugende Einrichtung (Permanentmagnet 3) aufweist, dem gestellfest, korrespondierend zu der Position des das Magnetfeld erzeugenden Einrichtung bei eingebauter Stellung des herausnehmbaren Bauteiles ein das oder die Magnetfelder erfassender Sensor (8) zugeordnet ist, dem bei Vorhandensein der Magnetfelder ein Signal entnehmbar und einer nachgeschalteten Auswerteeinheit (10) zuführbar ist.Printing machine, in particular sheetfed offset printing machine, which has removable components such as, in particular, rollers that guide ink and / or dampening agent, feed and metering devices such as chambered doctor blades, metering and application rollers for coating devices or the like.
characterized by
that the removable component has at least one permanent magnetic field generating device (permanent magnet 3), which is fixed to the frame, corresponding to the position of the magnetic field generating device when the removable component is installed, a sensor (8) detecting the magnetic field is assigned to which The presence of the magnetic fields allows a signal to be taken and fed to a downstream evaluation unit (10). Druckmaschine nach Anspruch 1,
dadurch gekennzeichnet,
daß die das Magnetfeld erzeugende Einrichtung ein Permanentmagnet (3) ist.Printing machine according to claim 1,
characterized by
that the device generating the magnetic field is a permanent magnet (3). Druckmaschine nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß das herausnehmbare Bauteil eine Walze (1) eines Farb-, Feucht- oder Lackierwerkes ist, welche in der Mitte der Stirnwand eines Zapfens (2) plan mit der Stirnfläche fluchtend eine ein Magnetfeld erzeugende Einrichtung (Permanentmagnet 3) eingelassen aufweist und der Sensor (8) koaxial zur Achse der Walze (1) im eingebauten Zustand der Stirnfläche des Zapfens (2) der Walze (1) gegenüberliegend gestellfest angeordnet ist.Printing machine according to claim 1 or 2,
characterized by
that the removable component is a roller (1) of an inking, dampening or coating unit, which in the middle of the end wall of a pin (2) is flush with the end face and has a device (permanent magnet 3) generating a magnetic field and the sensor ( 8) coaxial to the axis of the roller (1) in the installed state of the end face of the pin (2) of the roller (1) is arranged opposite to the frame. Druckmaschine nach Anspruch 3,
dadurch gekennzeichnet,
daß der Sensor (8) in einer die Walze (1) über einen Zapfen (2) aufnehmenden, U-förmigen Lagerschale (5) angeordnet ist.Printing machine according to claim 3,
characterized by
that the sensor (8) is arranged in a U-shaped bearing shell (5) receiving the roller (1) via a pin (2). Druckmaschine nach Anspruch 4,
dadurch gekennzeichnet,
daß der Sensor (8) in einer Bohrung (7) der U-förmigen Lagerschale (5) eingelassen ist.Printing machine according to claim 4,
characterized by
that the sensor (8) in a bore (7) of the U-shaped bearing shell (5) is embedded. Druckmaschine nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß an einem herausnehmbaren Kammerrakel (13) wenigstens zwei ein Magnetfeld erzeugende Einrichtungen (Permanentmagneten 3) angebracht sind, welchen ein oder mehrere Sensoren (8) gestellfest zugeordnet sind.Printing machine according to claim 1 or 2,
characterized by
that at least two devices (permanent magnets 3) generating a magnetic field are attached to a removable chambered doctor blade (13), with which one or more sensors (8) are associated with the frame. Druckmaschine nach Anspruch 6,
dadurch gekennzeichnet,
daß bei mehreren nebeneinanderliegenden ein Magnetfeld erzeugenden Einrichtungen (Permanentmagneten 3) Reed-Kontakte (14) in entsprechender Anzahl in einem Sensor (8) angeordnet sind.Printing machine according to claim 6,
characterized by
that in the case of a plurality of devices (permanent magnets 3) which produce a magnetic field lying side by side, corresponding numbers of reed contacts (14) are arranged in one sensor (8). Druckmaschine nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet,
daß die Druckmaschine mehrere Sensoren (8) entsprechend den mehreren herausnehmbaren Bauteilen aufweist und die Sensoren (8) einzeln abfragbar mit der Auswerteeinheit (10) verbunden sind.Printing machine according to one of the preceding claims,
characterized by
that the printing press has a plurality of sensors (8) corresponding to the plurality of removable components and the sensors (8) are connected to the evaluation unit (10) in such a way that they can be queried individually. Druckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Auswerteeinheit (10) mit einem Leitstand (11) der Druckmaschine nebst Anzeigeeinrichtung in Verbindung steht, wobei über dessen Anzeigeeinrichtung das Fehlen eines oder mehrerer Bauteile anzeigbar ist.Printing machine according to one of the preceding claims,
characterized by
that the evaluation unit (10) is connected to a control station (11) of the printing press together with a display device, the lack of one or more components being able to be indicated via its display device. Druckmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Auswerteeinheit (10) mit dem Antrieb (12) der Druckmaschine in Wirkverbindung steht und dazu ausgebildet ist, ein Stillsetzen des Antriebes (12) zu bewirken, wenn wenigstens einer der Sensoren (8) ein entsprechendes Signal abgibt.Printing machine according to one of the preceding claims,
characterized by
that the evaluation unit (10) is in operative connection with the drive (12) of the printing press and is designed to bring the drive (12) to a standstill if at least one of the sensors (8) emits a corresponding signal.
EP96100422A 1995-02-04 1996-01-12 Printing machine with withdrawable parts Expired - Lifetime EP0724958B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19503695A DE19503695C2 (en) 1995-02-04 1995-02-04 Protection for a printing press
DE19503695 1995-02-04

Publications (3)

Publication Number Publication Date
EP0724958A1 true EP0724958A1 (en) 1996-08-07
EP0724958B1 EP0724958B1 (en) 1998-08-12
EP0724958B2 EP0724958B2 (en) 2001-05-02

Family

ID=7753191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96100422A Expired - Lifetime EP0724958B2 (en) 1995-02-04 1996-01-12 Printing machine with withdrawable parts

Country Status (5)

Country Link
US (1) US5787813A (en)
EP (1) EP0724958B2 (en)
JP (1) JP2771504B2 (en)
AT (1) ATE169563T1 (en)
DE (2) DE19503695C2 (en)

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EP1747886A3 (en) * 2005-07-27 2010-05-05 Komori Corporation Printing press abnormal state display method and apparatus

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US6530319B1 (en) * 2001-09-10 2003-03-11 Ward Holding Company, Inc. Quick change ink roll
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EP1747886A3 (en) * 2005-07-27 2010-05-05 Komori Corporation Printing press abnormal state display method and apparatus

Also Published As

Publication number Publication date
ATE169563T1 (en) 1998-08-15
DE59600407D1 (en) 1998-09-17
JPH08252907A (en) 1996-10-01
EP0724958B2 (en) 2001-05-02
EP0724958B1 (en) 1998-08-12
DE19503695A1 (en) 1996-08-08
DE19503695C2 (en) 1997-02-27
JP2771504B2 (en) 1998-07-02
US5787813A (en) 1998-08-04

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