EP0841160A1 - Signal transmission in a printing machine - Google Patents

Signal transmission in a printing machine Download PDF

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Publication number
EP0841160A1
EP0841160A1 EP97119302A EP97119302A EP0841160A1 EP 0841160 A1 EP0841160 A1 EP 0841160A1 EP 97119302 A EP97119302 A EP 97119302A EP 97119302 A EP97119302 A EP 97119302A EP 0841160 A1 EP0841160 A1 EP 0841160A1
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EP
European Patent Office
Prior art keywords
transmission
transmitter
cylinder
electrically conductive
transmission channel
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Application number
EP97119302A
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German (de)
French (fr)
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EP0841160B1 (en
Inventor
Heiner Sirowitzki
Frank Schönfeld
Thomas Petry
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Manroland AG
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MAN Roland Druckmaschinen AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/30—Liquid contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • 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

Definitions

  • the invention relates to a signal transmission within a printing press according to the Preamble of claim 1.
  • a multitude of electrical energy which can be controlled by means of electrical signals and, in turn, generate electrical signals in accordance with measured values recorded Known to consumers.
  • An example of this would be that in the area of the gripper device, the sheet leading Cylinder mounted sheet control device called, by means of which It can be determined whether a sheet is correctly gripped by the gripper device or whether it forms a sheet next cylinder / drum has been handed over.
  • Such a sheet control device forms electrically evaluable signals according to a correctly determined sheet position, which from the rotating cylinder to a stationary or frame-fixed processing device must be transferred.
  • DE 4 222 827 C2 describes a rotary printing press with remote adjustment of positioning motors known in which the control of a servomotor within the cylinder is carried out via a ring antenna running coaxially to the cylinder axis machine-fixed HF transmitter interacts.
  • the disadvantage here is that for the transmission an additional electrical energy of the servomotor arranged in the cylinder Rotation transmission is necessary.
  • Another disadvantage is that between the machine-fixed RF transmitter on the one hand and the ring antenna on the cylinder on the other hand a sufficiently firm coupling a secure transmission of the RF signals is to be provided, but also shielding such that other RF sources cannot interfere with this transmission.
  • the rotary transmission is also for Actuators of remote register adjustment using slip ring rotary transmitters mentioned.
  • This Generally known transmission devices use spring-loaded or according to Art contacts formed by brushes, which have contact surfaces moved relative to these work together.
  • a disadvantage of this type of energy or signal transmission is that transmitted voltages or signals with a not insignificant interference voltage be overlaid. This is due to the wear and tear of those interacting with each other Contacts subject to surface texture and will still further due to the accumulation of foreign substances such as dust, abrasion particles and the like in not changed in a defined way.
  • For energy transmission when the demands are not so high with regard to the constant voltage and the required freedom from harmonics such transmission systems can be used, but not in the field of signal transmission, as this is especially the case with real-time controlled position reporting systems or positioning drives the case is.
  • DE 4 129 373 C2 describes a device for register adjustment on a plate cylinder a printing press known, the energy and signal transmission in the cylinder arranged servomotors together with position indicators known from EP 0 374 749 A1 Rotation transformer is used. About communicating with each other Windings of this rotary transformer are used both for the electrical energy Servomotors as well as from a controller located outside the cylinder to the Actuators sent or signals sent back from the actuators to the controller headed.
  • a disadvantage of these non-contact and therefore none mechanical wear-subject transmission system is that a sufficient fixed coupling of the current consumers arranged in the rotating cylinder or drum or signal receiver / signal sources is only given if the air gap between the yokes connecting the windings to each other sufficiently small and further is also not subject to tolerance (wobble).
  • the signals to be transmitted must be modulated on one or more predetermined carrier frequencies in this system be, so that there are capacity limits especially in a multi-channel transmission system surrender.
  • no permanent checking of the Functionality or the functional state of the transmission possible is also the case.
  • the object of the present invention is therefore a data transmission according to the preamble of claim 1 to expand so that a simple, inexpensive and wear-free Energy and / or signal transmission between a stationary data receiving and transmitting device and arranged in a rotating cylinder / drum Signal receivers / signal transmitters is guaranteed.
  • an electrically conductive liquid is used, which in electrically conductive connection with one attached to the rotating component and with a stationary, non-rotating contact surface.
  • the electrically conductive liquid it is preferably mercury, which in particular consists of Plastic-made housing protected against any kind of leakage (leakage, evaporation) is.
  • the rotary transformer provided according to the invention is on one or both ends Ends of the pins carrying the cylinder or the rotating drum coaxial to Axis of the cylinder / drum set and can according to the internal structure (Number of chambers containing the electrically conductive liquid) a number of to realize electrical power supply and data transmission channels.
  • the internal structure Numberer of chambers containing the electrically conductive liquid
  • the data and energy transmission according to the invention can be used in a large number of applications be realized within a printing press. So it is possible with a sheet leading Cylinder sensors / measuring devices that detect a correct sheet position with an evaluation device arranged outside the cylinder / drum connect.
  • the sheet position can also be via the transformer according to the invention on the sheet-guiding cylinder / the sheet-guiding drum corrective adjusting devices preferably operated depending on the detected signals.
  • the position indicators connected to the servomotors can be connected via the transformer according to the invention for signal transmission be.
  • a number of servomotors can be provided, both of which are required for their actuation electrical energy as well as the control commands required for execution via the inventive Receive transformer. It is particularly possible with register corrections via appropriate servomotors, the printing plate or the printing form when rotating To move cylinders, the signals of the position detectors coupled with the servomotors can be evaluated.
  • the inventive method can also be used to control the print quality during the printing process
  • Transformers are used. So it is possible within an arc Cylinder / within a sheet-guiding drum, a camera for at least some areas Arrange quality inspection and the video signals supplied by the camera to lead out of the rotating cylinder via the transformer according to the invention.
  • Means Such a camera arranged in the cylinder / drum can both Print quality in terms of shape and color of the print as well as the accuracy of fit printed partial images (register control) can be checked.
  • Another application for the transformer according to the invention arises in particular due to the fact that with this transformer the connected device is galvanically are firmly connected and thus a delay-free review of the Transmission system is possible at any time. So on the rotating cylinder or on one other rotating device of the printing press with the cylinder or this Device revolving light barrier can be provided as protection against contact or entry.
  • the light barriers rotating with the cylinder or the rotating component can especially with limited machine run commands, e.g. when washing the Cylinders can be activated by hand or other service or maintenance work.
  • Fig. 1 shows a cylinder of a printing machine, not shown, over both Pin is rotatably mounted in two indicated frame walls.
  • stations 4 Inside the cylinder are rotating stations 4, for example in the form of servomotors and position indicators or other data acquisition systems arranged.
  • the stations 4 within the Cylinders 1 are stationary with an outside of the cylinder via line systems shown arranged stations 5 and a voltage supply 6 connected.
  • the power supply 6 and the stations 4 arranged inside the cylinder 1 is at one End face of a pin 2 of the cylinder 1, a transformer 3 arranged, the further is explained with reference to Figures 2 and 3 in terms of structure and function.
  • transformer 3 shows the principle of the transmission 3 according to the invention Pin 2 arranged coaxially to the axis of the cylinder 1, not shown, transformer 3 consists of a cylindrical bushing as rotor 7 and an outer circumference this rotor 7 comprising stator 8 in the form of a sleeve.
  • Per signal to be transmitted or a power supply voltage to be transmitted is a transmission channel 9 between the outer jacket of the cylindrical rotor 7 and the inner surface of the as a sleeve trained stator 8 arranged.
  • FIG. 3 shows a transmission channel according to FIG. 2 in detail.
  • an annular chamber 13 which is incorporated in the outer circumference of the rotor 7 in this exemplary embodiment, is filled with an electrically conductive liquid 14, preferably mercury.
  • the annular chamber 13 with the electrically conductive liquid 14 between the rotor 7 and the inner surface of the stator 8 is sealed with two seals 15 each.
  • a contact 11 On the ground the annular chamber 13 in the rotor 7, a contact 11 is arranged, with a Line 10 within the rotor 7 to the corresponding electrical consumer or Data source / the data sink is connected.
  • the one with the electrically conductive liquid 14 the area of the stator 8 in contact between the seals 15 has a surface trained contact 12, which is also via a line 10 with the corresponding electrical consumers / electricity suppliers or data sources / data sinks connected is.
  • the seals 15 prevent the electrically conductive liquid from escaping 14 from the chamber 13 arranged between the rotor 7 and the stator 8 and enable a Rotation of the rotor 7 relative to the stator 8.
  • these chambers 13 of the transmission channels 9 an end face of a rotating body in the form of concentric to each other Arrange circles or tracks and this rotating end face a resting surface to be arranged opposite one another.
  • a combination is also possible in which a part of the Transmission channels 9 on the cylinder jacket of a rotor and another part of the transmission channels 9 are attached to the front end of the rotor.
  • the corresponding contacts 12 within the stator 8 are then located opposite the transmission channels 9 in each case Side on the cylindrical inner surface of the stator 8 or the bottom surface of the stator 8 arranged.

Abstract

The signal transmission transmits voltages and/or signals between stationary devices in a rotatable part of the printing machine esp. stations arranged inside cylinders or drums. A transmitter is provided for electrically connecting the stationary devices and the rotary stations. At least one transmission channel of the transmitter has an electrically conductive fluid (14) in electrical contact with a contact (11) which rotates with part of the printer and with a stationary contact (12). The electrically conductive fluid (14) makes an electrical (DC) coupling between the devices to be connected. The transmitter may have a transmission channel with conductive fluid for each voltage and/or signal to be transmitted. The fluid (14) may be arranged in a ring shaped chamber (13) between a rotor (7) connected to the rotatable part of the printer, and a stator (8). One of the channels may provide a permanent monitoring of the transmission.

Description

Die Erfindung betrifft eine Signalübertragung innerhalb einer Druckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a signal transmission within a printing press according to the Preamble of claim 1.

Innerhalb einer Druckmaschine sind in den drehbar gelagerten Zylindern bzw. Trommeln eine Vielzahl von mittels elektrischen Signalen ansteuerbarer, elektrische Energie verbrauchender und ihrerseits entsprechend erfaßter Meßwerte elektrische Signale generierender Verbraucher bekannt. Als Beispiel hierfür seien die im Bereich der Greifereinrichtung bogenführender Zylinder angebrachten Bogenkontrollvorrichtung genannt, vermittels denen feststellbar ist, ob durch die Greifereinrichtung ein Bogen korrekt erfaßt bzw. zu einem nächsten Zylinder/Trommel übergeben worden ist. Eine derartige Bogenkontrollvorrichtung bildet entsprechend einer korrekt festgestellten Bogenlage elektrisch auswertbare Signale, welche aus dem rotierenden Zylinder heraus zu einer stationären bzw. gestellfesten Verarbeitungseinrichtung übertragen werden müssen.Inside a printing press are in the rotatably mounted cylinders or drums a multitude of electrical energy which can be controlled by means of electrical signals and, in turn, generate electrical signals in accordance with measured values recorded Known to consumers. An example of this would be that in the area of the gripper device, the sheet leading Cylinder mounted sheet control device called, by means of which It can be determined whether a sheet is correctly gripped by the gripper device or whether it forms a sheet next cylinder / drum has been handed over. Such a sheet control device forms electrically evaluable signals according to a correctly determined sheet position, which from the rotating cylinder to a stationary or frame-fixed processing device must be transferred.

Aus der DE 4 222 827 C2 ist eine Rotationsdruckmaschine mit Fernverstellung von Positioniermotoren bekannt, bei welcher die Ansteuerung eines Stellmotores innerhalb des Zylinders über eine koaxial zur Zylinderachse verlaufende Ringantenne erfolgt, die mit einem maschinenfesten HF-Sender zusammenwirkt. Nachteilig ist hierbei, daß für die Übertragung der elektrischen Energie des im Zylinder angeordneten Stellmotors eine zusätzliche Drehübertragung nötig ist. Nachteilig ist ferner, daß zwischen dem maschinenfesten HF-Sender einerseits und der Ringantenne am Zylinder andererseits eine hinreichend feste Koppelung zur sicheren Übertragung der HF-Signale vorzusehen ist, ferner aber auch eine Abschirmung derart, so daß andere HF-Quellen diese Übertragung nicht stören können. DE 4 222 827 C2 describes a rotary printing press with remote adjustment of positioning motors known in which the control of a servomotor within the cylinder is carried out via a ring antenna running coaxially to the cylinder axis machine-fixed HF transmitter interacts. The disadvantage here is that for the transmission an additional electrical energy of the servomotor arranged in the cylinder Rotation transmission is necessary. Another disadvantage is that between the machine-fixed RF transmitter on the one hand and the ring antenna on the cylinder on the other hand a sufficiently firm coupling a secure transmission of the RF signals is to be provided, but also shielding such that other RF sources cannot interfere with this transmission.

In der Beschreibung der zuletzt genannten Schrift wird ferner auch die Drehübertragung für Stellmotoren der Registerfernverstellung mittels Schleifring-Drehübertragern erwähnt. Diese allgemein bekannten Übertragungseinrichtungen verwenden federbelastete bzw. nach Art von Bürsten ausgebildete Kontakte, welche mit relativ zu diesen bewegten Kontaktflächen zusammenwirken. Nachteilig bei dieser An der Energie- bzw. Signalübertragung ist, daß die übertragenen Spannungen bzw. Signale mit einer zum Teil nicht unwesentlichen Störspannung überlagert werden. Dies hat seine Ursache in der dem Verschleiß der miteinander zusammenwirkenden Kontakte unterworfenen Oberflächenbeschaffenheit und wird ferner noch durch Anlagerung von Fremdstoffen wie Staub, Abriebspartikeln und dergleichen in nicht definierter Weise verändert. Für eine Energieübertragung bei nicht so hohen Anforderungen hinsichtlich der Spannungskonstanz sowie der geforderten Oberwellenfreiheit vermögen derartige Übertragungssysteme einsetzbar sein, nicht jedoch im Bereich der Signalübertragung, wie dies insbesondere bei in Echtzeit gesteuerten Postitionsmeldesystemen bzw. Positionierantrieben der Fall ist.In the description of the last-mentioned font, the rotary transmission is also for Actuators of remote register adjustment using slip ring rotary transmitters mentioned. This Generally known transmission devices use spring-loaded or according to Art contacts formed by brushes, which have contact surfaces moved relative to these work together. A disadvantage of this type of energy or signal transmission is that transmitted voltages or signals with a not insignificant interference voltage be overlaid. This is due to the wear and tear of those interacting with each other Contacts subject to surface texture and will still further due to the accumulation of foreign substances such as dust, abrasion particles and the like in not changed in a defined way. For energy transmission when the demands are not so high with regard to the constant voltage and the required freedom from harmonics such transmission systems can be used, but not in the field of signal transmission, as this is especially the case with real-time controlled position reporting systems or positioning drives the case is.

Aus der DE 4 129 373 C2 ist eine Vorrichtung zur Passerverstellung an einem Plattenzylinder einer Druckmaschine bekannt, wobei zur Energie- und Signalübertragung der im Zylinder angeordneten Stellmotoren nebst Positionsmelder ein aus der EP 0 374 749 A1 bekannter Rotationstransformator Verwendung findet. Über die miteinander kommunizierenden Wicklungen dieses Rotationstransformators werden sowohl die elektrische Energie für die Stellmotoren als auch die von einer außerhalb des Zylinders angeordneten Steuerung zu den Stellmotoren gesendeten bzw. von den Stellmotoren zu der Steuerung rückgesendeten Signale geleitet. Nachteilig bei diesen berührungslos arbeitenden und demzufolge keinerlei mechanischem Verschleiß unterliegendem Übertragungssystems ist, daß eine hinreichend feste Ankopplung der in dem rotierenden Zylinder bzw. der Trommel angeordneten Stromverbraucher bzw. Signalempfänger/Signalquellen nur dann gegeben ist, wenn der Luftsspalt zwischen den die Wicklungen miteinander verbindenden Jochen hinreichend klein und ferner auch keiner Toleranz (Taumelbewegung) unterworfen ist. Die zu übertragenden Signale müssen bei diesem System auf eine oder mehrere vorgegebene Trägerfrequenzen moduliert sein, so daß sich gerade bei einem mehrkanaligem Übertragungssystem Kapazitätsgrenzen ergeben. Ferner ist bei einem derartigen Übertragungssystem - wie übrigens auch bei einer Signalübertragung mittels HF-Sender und Ringantenne - keine permanente Überprüfung der Funktionsfähigkeit bzw. des Funktionszustandes der Übertragung möglich. Um dies bei einem Übertrager nach dem Prinzip des Rotationstransformators zu bewerkstelligen, müssen beispielsweise Daten von der gestellfesten, außerhalb des Zylinders angeordneten Steuerung zu einem Empfänger innerhalb des Zylinders gesendet und diese Daten dort gespiegelt, d.h. zurückgesendet werden. Aus dem ordnungsgemäßen Datenempfang (Gleichheit der gesendeten und empfangenen Daten) kann dann aufden ordnungsgemäßen Arbeitszustand des Übertragers geschlossen werden. Eine derartige, nach dem Quittierverfahren aufgebaute Überprüfung kann aber nicht permanent eingesetzt werden, da sonst keine Zeit mehr für die anderweitig zu übertragenden Daten zur Verfügung steht. Alternativ dazu ist es möglich, einen Übertragungskanal für eine permanente Übertragungskanalprüfung vorzusehen, wobei sich dann die Zahl der für die Datenübertragung vorzusehenden Kanäle entsprechend einschränkt.DE 4 129 373 C2 describes a device for register adjustment on a plate cylinder a printing press known, the energy and signal transmission in the cylinder arranged servomotors together with position indicators known from EP 0 374 749 A1 Rotation transformer is used. About communicating with each other Windings of this rotary transformer are used both for the electrical energy Servomotors as well as from a controller located outside the cylinder to the Actuators sent or signals sent back from the actuators to the controller headed. A disadvantage of these non-contact and therefore none mechanical wear-subject transmission system is that a sufficient fixed coupling of the current consumers arranged in the rotating cylinder or drum or signal receiver / signal sources is only given if the air gap between the yokes connecting the windings to each other sufficiently small and further is also not subject to tolerance (wobble). The signals to be transmitted must be modulated on one or more predetermined carrier frequencies in this system be, so that there are capacity limits especially in a multi-channel transmission system surrender. Furthermore, with such a transmission system - as is also the case with one Signal transmission by means of HF transmitter and ring antenna - no permanent checking of the Functionality or the functional state of the transmission possible. To do this at to accomplish a transformer based on the principle of the rotary transformer For example, data from the controller fixed to the frame and located outside the cylinder sent to a receiver within the cylinder and this data is mirrored there, i.e. be sent back. From the correct data reception (equality of the sent and received data) can then be checked to ensure that the Transmitter can be closed. Such a, constructed according to the acknowledgment process However, verification cannot be used permanently, otherwise there will be no more time for the data to be transferred otherwise is available. Alternatively, it is possible to provide a transmission channel for a permanent transmission channel test, wherein the number of channels to be provided for the data transmission is then limited accordingly.

Abschließend sei in diesem Zusammenhang auch auf die mittels Optokopplern aufgebauten Datenübertragungssysteme hingewiesen, vermittels denen elektrische Signale über eine kurze optische Strecke zu bzw. von einem rotierenden Zylinder übertragbar sind. Wie im Falle des voranstehend genannten HF-Übertragers sind bei einem derartigen Drehübertrager für die elektrische Energie der im Zylinder bzw. der Trommel angeordneten Verbraucher zusätzliche Übertragungsmedien vorzusehen. Hinsichtlich der permanenten Funktionsüberprüfung gilt das gleiche, was bereits zu dem nach dem Prinzip des Rotationstransformators aufgebauten Drehübertrager gesagt worden ist.Finally, in this connection, also on those built using optocouplers Data transmission systems pointed out by means of which electrical signals over a short optical path to or from a rotating cylinder can be transmitted. As in the case of the above-mentioned RF transmitter are in such a rotary transformer for the electrical energy of the consumers arranged in the cylinder or drum To provide transmission media. Regarding the permanent function check the same applies, which already applies to the principle of the rotary transformer assembled rotary transformer has been said.

Aufgabe der vorliegenden Erfindung ist es daher eine Datenübertragung gemäß dem Oberbegriff von Anspruch 1 derartig zu erweitern, so daß eine einfache, kostengünstige und verschleißfreie Energie- und/oder Signalübertragung zwischen einer stationären Datenempfangs- und Sendeeinrichtung sowie in einem rotierenden Zylinder/Trommel angeordneten Signalempfängern/Signalsendern gewährleistet ist.The object of the present invention is therefore a data transmission according to the preamble of claim 1 to expand so that a simple, inexpensive and wear-free Energy and / or signal transmission between a stationary data receiving and transmitting device and arranged in a rotating cylinder / drum Signal receivers / signal transmitters is guaranteed.

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

Nach der Erfindung ist allgemein vorgesehen, daß zur Energie- und/oder Datenübertragung in wenigstens einem Kanal eine elektrisch leitende Flüssigkeit Verwendung findet, welche in elektrisch leitender Verbindung mit einer am rotierenden Bauteil angebrachten sowie mit einer stationären, nicht drehenden Kontaktfläche steht. Bei der elektrisch leitenden Flüssigkeit handelt es sich dabei vorzugsweise um Quecksilber, welches in einem insbesondere aus Kunststoffgefertigten Gehäuse gegen jede Art von Austritt (Auslaufen, Verdampfen) geschützt ist. Durch Verwendung eines derartigen und eine elektrisch leitende Flüssigkeit aufweisenden Drehübertrages ist es möglich, eine galvanisch feste Kopplung zwischen der stationären Steuerung und den im drehenden Zylinder/Trommel angeordneten elektrischen Verbrauchern bzw. Datensendern/Datenempfängern zu erzeugen. Durch diese galvanisch feste Kopplung zwischen Steuerung und Datensendern/Datenempfängern auf der rotierenden Seite ist simultan zur Energie- und/oder Signalübertragung eine permanente Funktionsüberwachung des Übertragungskanals möglich.According to the invention it is generally provided that for energy and / or data transmission in at least one channel an electrically conductive liquid is used, which in electrically conductive connection with one attached to the rotating component and with a stationary, non-rotating contact surface. With the electrically conductive liquid it is preferably mercury, which in particular consists of Plastic-made housing protected against any kind of leakage (leakage, evaporation) is. By using such and an electrically conductive liquid having rotary transmission, it is possible to establish a galvanically fixed coupling between the stationary control and the electrical arranged in the rotating cylinder / drum To generate consumers or data senders / data recipients. Through this galvanic fixed coupling between control and data transmitters / data receivers on the rotating Side is a permanent function monitoring simultaneously with the energy and / or signal transmission of the transmission channel possible.

Der nach der Erfindung vorgesehene Drehübertrager wird dabei an einer oder beiden stirnseitigen Enden der den Zylinder bzw. die drehende Trommel tragenden Zapfen koaxial zur Achse des Zylinders/ der Trommel angesetzt und vermag entsprechend dem inneren Aufbau (Zahl der die elektrisch leitenden Flüssigkeit aufweisenden Kammern) eine Anzahl von elektrischen Energieversorgungs- und Datenübertragungskanälen zu realisieren. Durch die galvanische Kopplung zwischen der rotierenden und der stationären Einheit ergibt sich bei höchster Übertragungssicherheit die Möglichkeit einer verzögerungsfreien Überprüfbarkeit hinsichtlich des Ausfalls eines oder mehrerer Übertragungskanäle.The rotary transformer provided according to the invention is on one or both ends Ends of the pins carrying the cylinder or the rotating drum coaxial to Axis of the cylinder / drum set and can according to the internal structure (Number of chambers containing the electrically conductive liquid) a number of to realize electrical power supply and data transmission channels. Through the galvanic coupling between the rotating and the stationary unit results in highest transmission security the possibility of a delay-free verifiability regarding the failure of one or more transmission channels.

Die erfindungsgemäße Daten- und Energieübertragung kann in einer Vielzahl von Anwendungen innerhalb einer Druckmaschine realisiert sein. So ist es möglich, bei einem bogenführenden Zylinder die eine korrekte Bogenlage detektierenden Sensoren/Meßvorrichtungen mit einer außerhalb des Zylinders / der Trommel angeordneten Auswerteeinrichtung zu verbinden. Zusätzlich können über den erfindungsgemäßen Übertrager auch die Bogenlage auf dem bogenführenden Zylinder / der bogenführenden Trommel korrigierende Stellvorrichtungen vorzugsweise in Abhängigkeit der erfaßten Signale betätigt werden. Auch die mit den Stellmotoren verbundenen Positionsmelder (Potentiometer oder sonstige Stellungsgeber) können über den erfindungsgemäßen Übertrager zur Signalweiterleitung verbunden sein.The data and energy transmission according to the invention can be used in a large number of applications be realized within a printing press. So it is possible with a sheet leading Cylinder sensors / measuring devices that detect a correct sheet position with an evaluation device arranged outside the cylinder / drum connect. In addition, the sheet position can also be via the transformer according to the invention on the sheet-guiding cylinder / the sheet-guiding drum corrective adjusting devices preferably operated depending on the detected signals. Also the position indicators connected to the servomotors (potentiometer or other position transmitter) can be connected via the transformer according to the invention for signal transmission be.

Bei einem Platten- bzw. Formzylinder einer Druckmaschine können zum Aufspannen bzw. zum Ausführen von Lagekorrekturen der Druckplatte / der Druckform auf dem Zylinder eine Anzahl von Stellmotoren vorgesehen sein, welche sowohl die zu deren Betätigung benötigte elektrische Energie als auch die zur Ausführung nötigen Stellbefehle über den erfindungsgemäßen Übertrager erhalten. So ist es insbesondere möglich bei Registerkorrekturen über entsprechende Stellmotoren die Druckplatte bzw. die Druckform bei sich drehendem Zylinders zu verfahren, wobei entsprechend den gegebenen Verfahrbefehlen die Signale der mit den Stellmotoren gekoppelten Positionsmelder ausgewertet werden.In the case of a plate or form cylinder of a printing press, clamping or for performing position corrections of the printing plate / printing form on the cylinder a number of servomotors can be provided, both of which are required for their actuation electrical energy as well as the control commands required for execution via the inventive Receive transformer. It is particularly possible with register corrections via appropriate servomotors, the printing plate or the printing form when rotating To move cylinders, the signals of the position detectors coupled with the servomotors can be evaluated.

Auch zur Kontrolle der Druckqualität während des Druckprozesses kann der erfindungsgemäße Übertrager verwendet werden. So ist es möglich, innerhalb eines bogenführenden Zylinders / innerhalb einer bogenführenden Trommel eine Kamera zur wenigstens bereichsweisen Qualitätsinspektion anzuordnen und die von der Kamera gelieferten Videosignale über den erfindungsgemäßen Übertrager aus dem rotierenden Zylinder herauszuleiten. Mittels einer derartigen im Zylinder / einer Trommel angeordneten Kamera kann sowohl die Druckqualität hinsichtlich Form und Farbe des Aufdruckes als auch die Paßgenauigkeit der übereinandergedruckten Teilbilder (Registerkontrolle) überprüft werden.The inventive method can also be used to control the print quality during the printing process Transformers are used. So it is possible within an arc Cylinder / within a sheet-guiding drum, a camera for at least some areas Arrange quality inspection and the video signals supplied by the camera to lead out of the rotating cylinder via the transformer according to the invention. Means Such a camera arranged in the cylinder / drum can both Print quality in terms of shape and color of the print as well as the accuracy of fit printed partial images (register control) can be checked.

Ein weiterer Anwendungsfall für den erfindungsgemäßen Übertrager ergibt sich insbesondere aufgrund der Tatsache, daß bei diesem Übertrager die angeschlossene Einrichtung galvanisch fest miteinander verbunden sind und somit eine verzögerungsfreie Überprüfung des Übertragungssystems jederzeit möglich ist. So kann am rotierenden Zylinder bzw. an einer sonstigen rotierenden Einrichtung der Druckmaschine eine mit dem Zylinder bzw. dieser Einrichtung umlaufende Lichtschranke als Berührungs- bzw. Einlaufschutz vorgesehen sein. Die mit dem Zylinder bzw. dem rotierenden Bauteil umlaufenden Lichtschranken können insbesondere bei eingeschränkten Laufkommandos der Maschine, z.B. beim Waschen der Zylinder von Hand oder sonstigen Service- bzw. Wartungsarbeiten aktiviert werden. Another application for the transformer according to the invention arises in particular due to the fact that with this transformer the connected device is galvanically are firmly connected and thus a delay-free review of the Transmission system is possible at any time. So on the rotating cylinder or on one other rotating device of the printing press with the cylinder or this Device revolving light barrier can be provided as protection against contact or entry. The light barriers rotating with the cylinder or the rotating component can especially with limited machine run commands, e.g. when washing the Cylinders can be activated by hand or other service or maintenance work.

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

Fig. 1
den Einsatz des erfindungsgemäßen Übertragers bei einem Zylinder/ einer Trommel einer Druckmaschine,
Fig. 2
eine Ausführungsform des erfindungsgemäßen Übertragers, und
Fig. 3
das Prinzip der elektrischen Übertragung im Detail.
Furthermore, an embodiment of the invention is explained with reference to the drawing. It shows:
Fig. 1
the use of the transmitter according to the invention in a cylinder / drum of a printing press,
Fig. 2
an embodiment of the transmitter according to the invention, and
Fig. 3
the principle of electrical transmission in detail.

Fig. 1 zeigt einen Zylinder einer nicht weiter dargestellten Druckmaschine, der über beide Zapfen in zwei angedeuteten Gestellwänden drehbar gelagert ist. Innerhalb des Zylinders sind mitrotierende Stationen 4 beispielsweise in Form von Stellmotoren nebst Positionsmeldern oder sonstigen Meßwerterfassungssystemen angeordnet. Die Stationen 4 innerhalb des Zylinders 1 sind über dargestellte Leitungssysteme mit einer außerhalb des Zylinders stationär angeordneten Stationen 5 sowie eine Spannungsversorgung 6 verbunden. Zur Übertragung der Signale sowie der Spannungsversorgung zwischen der Station 5, der Spannungsversorgung 6 sowie den innerhalb des Zylinders 1 angeordneten Stationen 4 ist an einer Stirnseite eines Zapfens 2 des Zylinders 1 ein Übertrager 3 angeordnet, der des weiteren anhand der Figuren 2 und 3 hinsichtlich Aufbau und Funktion erläutert wird.Fig. 1 shows a cylinder of a printing machine, not shown, over both Pin is rotatably mounted in two indicated frame walls. Inside the cylinder are rotating stations 4, for example in the form of servomotors and position indicators or other data acquisition systems arranged. The stations 4 within the Cylinders 1 are stationary with an outside of the cylinder via line systems shown arranged stations 5 and a voltage supply 6 connected. For transmission the signals and the power supply between station 5, the power supply 6 and the stations 4 arranged inside the cylinder 1 is at one End face of a pin 2 of the cylinder 1, a transformer 3 arranged, the further is explained with reference to Figures 2 and 3 in terms of structure and function.

Fig. 2 zeigt das Prinzip des erfindungsgemäßen Übertrages 3. Der an einer Stirnseite des Zapfens 2 koaxial zur Achse des nicht dargestellten Zylinders 1 angeordnete Übertrager 3 besteht hierbei aus einer zylindrischen Buchse als Rotor 7 sowie einer den Außenumfang dieses Rotors 7 umfassenden Stators 8 in Form einer Hülse. Pro zu übertragendem Signal bzw. zu übertragender Spannung einer Spannungsversorgung ist ein Übertragungskanal 9 zwischen dem Außenmantel des zylindrischen Rotors 7 sowie der Innenfläche des als Hülse ausgebildeten Stators 8 angeordnet. Die über die Übertragungskanäle 9 geleiteten Signale bzw. die zu übertragenden Spannungen werden durch Leitungen 10 zu den stationären Einrichtungen (Station 5, Spannungsversorgung 6) bzw. den innerhalb des Zylinders 1 angeordneten Stationen 4 geleitet. 2 shows the principle of the transmission 3 according to the invention Pin 2 arranged coaxially to the axis of the cylinder 1, not shown, transformer 3 consists of a cylindrical bushing as rotor 7 and an outer circumference this rotor 7 comprising stator 8 in the form of a sleeve. Per signal to be transmitted or a power supply voltage to be transmitted is a transmission channel 9 between the outer jacket of the cylindrical rotor 7 and the inner surface of the as a sleeve trained stator 8 arranged. The signals conducted via the transmission channels 9 or the voltages to be transmitted through lines 10 to the stationary devices (Station 5, power supply 6) or arranged inside the cylinder 1 Stations 4 headed.

Fig. 3 zeigt einen Übertragungskanal gemäß Fig. 2 im Detail. In einer ringförmigen Kammer 13, welche in diesem Ausführungsbeispiel im Außenumfang des Rotors 7 eingearbeitet ist, ist mit einer elektrisch leitenden Flüssigkeit 14, vorzugsweise Quecksilber, befüllt. Die ringförmige Kammer 13 mit der elektrisch leitenden Flüssigkeit 14 zwischen dem Rotor 7 und der Innenfläche des Stators 8 ist mit jeweils zwei Dichtungen 15 abgedichtet. Am Boden der ringförmigen Kammer 13 im Rotor 7 ist ein Kontakt 11 angeordnet, der mit einer Leitung 10 innerhalb des Rotors 7 zum entsprechenden elektrischen Verbraucher bzw. der Datenquelle / der Datensenke verbunden ist. Der mit der elektrisch leitenden Flüssigkeit 14 in Kontakt stehende Bereich des Stators 8 zwischen den Dichtungen 15 weist einen als Fläche ausgebildeten Kontakt 12 auf, der ebenfalls über eine Leitung 10 mit den entsprechenden elektrischen Verbrauchern / Stromversorgern bzw. Datenquellen / Datensenken verbunden ist. Die Dichtungen 15 vermeiden einen Austritt der elektrisch leitenden Flüssigkeit 14 aus der zwischen Rotor 7 und Stator 8 angeordneten Kammer 13und ermöglichen ein Drehen des Rotors 7 gegenüber dem Stator 8. In diesem Ausführungsbeispiel sind die Übertragungskanäle 9 mit den mit der elektrisch leitenden Flüssigkeit 14 befüllten Kammern 13 am Außenumfang eines zylinderförmig gefertigten Rotors 7 angeordnet. Unter Anwendung der Erfindung ist es ebenfalls möglich diese Kammern 13 der Übertragungskanäle 9 an einer Stirnseite eines drehenden Körpers in Form von konzentrisch zueinander verlaufenden Kreisen bzw. Bahnen anzuordnen und dieser rotierenden Stirnfläche eine ruhende Fläche gegenüberliegend anzuordnen. Auch ist eine Kombination möglich, bei welcher ein Teil der Übertragungskanäle 9 am Zylindermantel eines Rotors und ein weiterer Teil der Übertragungskanäle 9 am stirnseitigen Ende des Rotors angebracht sind. Die entsprechenden Kontakte 12 innerhalb des Stators 8 sind dann an derjeweils den Übertragungskanälen 9 gegenüberliegenden Seite an der zylindrischen Innenfläche des Stators 8 bzw. der Bodenfläche des Stators 8 angeordnet. FIG. 3 shows a transmission channel according to FIG. 2 in detail. In an annular chamber 13, which is incorporated in the outer circumference of the rotor 7 in this exemplary embodiment, is filled with an electrically conductive liquid 14, preferably mercury. The annular chamber 13 with the electrically conductive liquid 14 between the rotor 7 and the inner surface of the stator 8 is sealed with two seals 15 each. On the ground the annular chamber 13 in the rotor 7, a contact 11 is arranged, with a Line 10 within the rotor 7 to the corresponding electrical consumer or Data source / the data sink is connected. The one with the electrically conductive liquid 14 the area of the stator 8 in contact between the seals 15 has a surface trained contact 12, which is also via a line 10 with the corresponding electrical consumers / electricity suppliers or data sources / data sinks connected is. The seals 15 prevent the electrically conductive liquid from escaping 14 from the chamber 13 arranged between the rotor 7 and the stator 8 and enable a Rotation of the rotor 7 relative to the stator 8. In this embodiment, the Transmission channels 9 with the chambers filled with the electrically conductive liquid 14 13 arranged on the outer circumference of a cylindrical rotor 7. Under application the invention it is also possible to these chambers 13 of the transmission channels 9 an end face of a rotating body in the form of concentric to each other Arrange circles or tracks and this rotating end face a resting surface to be arranged opposite one another. A combination is also possible in which a part of the Transmission channels 9 on the cylinder jacket of a rotor and another part of the transmission channels 9 are attached to the front end of the rotor. The corresponding contacts 12 within the stator 8 are then located opposite the transmission channels 9 in each case Side on the cylindrical inner surface of the stator 8 or the bottom surface of the stator 8 arranged.

BezugszeichenlisteReference list

11
Zylindercylinder
22nd
ZapfenCones
33rd
ÜbertragerTransformer
44th
Station (Zylinder 1)Station (cylinder 1)
55
Stationstation
66
SpannungsversorgungPower supply
77
Rotorrotor
88th
Statorstator
99
ÜbertragungskanalTransmission channel
1010th
Leitungmanagement
1111
KontaktContact
1212th
KontaktContact
1313
Kammerchamber
1414
Flüssigkeitliquid
1515
Dichtungpoetry

Claims (5)

Signalübertragung innerhalb einer Druckmaschine zur Übertragung von Spannungen und/oder Signalen zwischen stationären Einrichtungen in einem drehbaren Teil der Druckmaschine, insbesondere innerhalb Zylindern bzw. Trommeln angeordneten Stationen, wobei zur elektrischen Verbindung der stationären Einrichtungen und der rotierend angeordneten Stationen ein Übertrager vorgesehen ist,
dadurch gekennzeichnet,
daß wenigstens ein Übertragungskanal (9) des Übertragers (3) eine elektrisch leitfähige Flüssigkeit (14) in elektrisch leitender Verbindung mit einem mit dem Teil der Druckmaschine mitrotierenden Kontakt (11) sowie einem stationär angeordneten Kontakt (12) aufweist, und daß über die elektrisch leitende Flüssigkeit (14) eine galvanische Kopplung zwischen den miteinander zu verbindenden Einrichtungen (4, 5, 6) erfolgt.Signal transmission within a printing press for the transmission of voltages and / or signals between stationary devices in a rotatable part of the printing press, in particular stations arranged within cylinders or drums, a transmitter being provided for the electrical connection of the stationary devices and the rotating stations.
characterized by
that at least one transmission channel (9) of the transmitter (3) has an electrically conductive liquid (14) in an electrically conductive connection with a contact (11) rotating with the part of the printing press and a stationary contact (12), and that via the electrically conductive liquid (14) is a galvanic coupling between the devices to be connected (4, 5, 6). Datenübertragungseinrichtung nach Anspruch 1 ,
dadurch gekennzeichnet,
daß der Übertrager (3) für jede zu übertragene Spannung und/oder Signal einen Übertragungskanal (9) mit einer elektrisch leitfähigen Flüssigkeit (14) aufweist.Data transmission device according to claim 1,
characterized by
that the transmitter (3) for each voltage and / or signal to be transmitted has a transmission channel (9) with an electrically conductive liquid (14). Datenübertragungseinrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß in einem Übertragungskanal (9) des Übertragers (3) die elektrisch leitfähige Flüssigkeit (14) in einer ringförmigen Kammer (13) zwischen einem mit dem drehbaren Bauteil der Druckmaschine verbundenen Rotor (7) und einem Stator (8) angeordnet ist. Data transmission device according to claim 1 or 2,
characterized by
that in a transmission channel (9) of the transmitter (3) the electrically conductive liquid (14) is arranged in an annular chamber (13) between a rotor (7) connected to the rotatable component of the printing press and a stator (8). Datenübertragungseinrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß bei wenigstens einem Übertragungskanal (9) des Übertragers (3) in Verbindung mit der Übertragung von Spannungen und/oder Signalen zwischen den in dem rotierenden Bauteil der Druckmaschine angeordneten Stationen (4) und den stationär angeordneten Einrichtungen (5, 6) eine permanente Überwachung des Übertragungskanals (9) erfolgt.Data transmission device according to one of the preceding claims,
characterized by
that in at least one transmission channel (9) of the transmitter (3) in connection with the transmission of voltages and / or signals between the stations (4) arranged in the rotating component of the printing press and the stationary devices (5, 6), permanent monitoring of the transmission channel (9). Datenübertragungseinrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß bei wenigstens einem Übertragungskanal (9) des Übertragers (3) eine Überwachung des Übertragungskanals (9) aufgrund der galvanischen Kopplung erfolgt.Data transmission device according to claim 4,
characterized by
that in at least one transmission channel (9) of the transmitter (3) the transmission channel (9) is monitored on the basis of the galvanic coupling.
EP97119302A 1996-11-09 1997-11-05 Signal transmission in a printing machine Expired - Lifetime EP0841160B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29619491U DE29619491U1 (en) 1996-11-09 1996-11-09 Signal transmission within a printing press
DE29619491U 1996-11-09

Publications (2)

Publication Number Publication Date
EP0841160A1 true EP0841160A1 (en) 1998-05-13
EP0841160B1 EP0841160B1 (en) 2001-07-11

Family

ID=8031703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119302A Expired - Lifetime EP0841160B1 (en) 1996-11-09 1997-11-05 Signal transmission in a printing machine

Country Status (3)

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EP (1) EP0841160B1 (en)
AT (1) ATE202974T1 (en)
DE (2) DE29619491U1 (en)

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ATE202974T1 (en) 2001-07-15
EP0841160B1 (en) 2001-07-11
DE29619491U1 (en) 1996-12-19
DE59704005D1 (en) 2001-08-16

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