EP0753405A1 - Drive with several motors for a printing press - Google Patents

Drive with several motors for a printing press Download PDF

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Publication number
EP0753405A1
EP0753405A1 EP96109627A EP96109627A EP0753405A1 EP 0753405 A1 EP0753405 A1 EP 0753405A1 EP 96109627 A EP96109627 A EP 96109627A EP 96109627 A EP96109627 A EP 96109627A EP 0753405 A1 EP0753405 A1 EP 0753405A1
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EP
European Patent Office
Prior art keywords
drive
cylinder
torque
cylinders
drives
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Granted
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EP96109627A
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German (de)
French (fr)
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EP0753405B1 (en
Inventor
Klaus-Peter Reichardt
Joachim Blumör
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Manroland AG
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MAN Roland Druckmaschinen AG
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Publication of EP0753405A1 publication Critical patent/EP0753405A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/70—Driving devices associated with particular installations or situations
    • B41P2213/73—Driving devices for multicolour presses
    • B41P2213/734—Driving devices for multicolour presses each printing unit being driven by its own electric motor, i.e. electric shaft

Definitions

  • the invention relates to a multi-motor drive for a printing press according to the preamble of claim 1.
  • An electric drive system for a printing press is known from DE 4 322 741 A1, in which provision is made in particular to provide the cylinders with one motor each and to drive them in synchronism with one another by means of a corresponding control.
  • angular position transmitters are arranged directly on the cylinders, the signals of which are evaluated by a common control for corresponding rotation-synchronous operation of the individual cylinders.
  • the drive since the load torque fluctuates greatly when a cylinder rotates, the drive must meet correspondingly high quality requirements.
  • the angular position must be constantly guaranteed over a cylinder revolution, and the cylinder must also be in a predetermined position Speed range to be driven.
  • DE 4 202 722 A1 discloses a safety device for regulating or controlling drive units of a printing press, in which the cylinders have individual drives.
  • a mechanical coupling is provided which is designed in such a way that the cylinders cannot be rotated relative to one another over precisely this predetermined dimension.
  • the corresponding coupling parts have no contact with each other. This is only the case if the above-mentioned relative rotation leading to destruction is present beyond a predetermined amount.
  • relatively complex drives for the individual units or cylinders must also be used.
  • DE 4 137 979 A1 discloses a drive for a printing press with a plurality of printing units, in which the individual printing units or printing unit groups are mechanically decoupled from one another and each of these groups has its own drive motor.
  • a device for angle control is provided, which is designed to specify a permissible angle of rotation deviation of the individual printing units or printing unit groups in such a way that this is minimal at the angle of rotation position which corresponds to the sheet transfer.
  • the register quality is to be improved with this drive.
  • relatively high demands are to be made of the electrical drive of the individual assemblies or cylinders in order to be able to drive the load of the cylinders or assemblies depending on the angle of rotation on the one hand in a wide speed range.
  • EP 0 355 442 B1 discloses a method and a device for reducing the torque load on a system driven by an electric motor, in particular a printing press.
  • the drive motor is controlled in such a way that changes in the load torque are kept at an approximately constant value. This means that the speed of such a printing machine is no longer a constant in time, so that such a drive principle can only be transferred in a very complex manner to a machine in which the cylinders and / or individual assemblies are each provided with an individual drive.
  • the object of the present invention is therefore to expand a multi-motor drive for a printing press in such a way that, given the requirements for synchronism of the individually driven cylinders and / or assemblies, the cost of the drives to be used can be reduced appreciably. Furthermore, the system to be created should also provide security with regard to the failure of electrical and / or other drive components.
  • each individually driven cylinder and / or assembly is provided with two drives.
  • the first drive introduces a basic torque into the cylinder and / or assembly, that is to say that drive torque which the cylinder or assembly requires on average during one revolution.
  • the second drive assigned to this cylinder or to the assembly is designed such that it only has such a dynamic range with respect to the remaining drive torque that the cylinder or Compensate module rotation occurring short-term load moments.
  • the rotation-synchronous running of the cylinder or the assembly of the printing press is thus brought about by this second, highly dynamic drive, which is preferably designed as a brushless DC motor.
  • the first drive which feeds the basic torque into the cylinder or the assembly
  • the second drive which is preferably designed as a brushless DC motor, is then connected directly or via a torsionally rigid and backlash-free gear to the journal of the cylinder or a journal of a cylinder of the assembly of the printing press.
  • the drive concept according to the invention results in a number of advantages, the cost advantage in the implementation of a single or group-wise drive having been provided in spite of the two drives to be provided per cylinder or assembly.
  • Another advantage of the invention is that, in the event of failure of, for example, the highly dynamic drive designed for the briefly fluctuating torque situation, this cylinder or the assembly can be shut down in a defined manner to a standstill via the second drive. The remaining cylinders or assemblies follow the timing of this cylinder or assembly.
  • the failure of a drive feeding the basic torque in the cylinder or the assembly can also help to avoid the mechanical collisions indicated at the beginning of the description. In this case, the cylinder or the assembly is shut down via the highly dynamic drive, which is not a problem since the drives available today can be overloaded for a short time.
  • both drives of a cylinder or of an assembly fail, further development according to the invention provides that the position transmitter signal of this cylinder or of this assembly is used as the position setpoint for all other units. In this case, this cylinder or the assembly runs out to a standstill, with all other cylinders or assemblies following this master axis at an angle-synchronous manner.
  • the failure of the supply voltage can also be compensated for by the drive system according to the invention, in which the converter for the drives are connected to one another, for example, via a DC voltage intermediate circuit. The individual drives are then brought down to a standstill on a ramp, which is dimensioned such that full DC voltage is still available at all times due to the energy regenerated during braking.
  • the cylinder 1.1 of a printing unit which guides the sheet to be printed, is driven here by two drives 2.1 and 2.11.
  • the assembly of the driven cylinder 1.1 that is to say the corresponding printing unit of the sheet-fed offset printing press, also has a transfer cylinder T driven by the cylinder 1.1, a blanket cylinder G and a plate cylinder P.
  • These cylinders mentioned here are connected to each other via a continuous gear train, not shown. However, there is no mechanical coupling to a next printing unit that has the same components.
  • the cylinder 1.1 of the assembly is connected to a drive 2.1 and a highly dynamic drive 2.11.
  • the drives 2.1 and 2.11 are in operative connection with a drive control 5.1, which is connected on the one hand to a position sensor 3.1 directly connected to the cylinder 1.1 and on the other hand to a commutator sensor 4.1 attached to the highly dynamic drive 2.11.
  • the drive control 5.1 thus takes over the energization of the highly dynamic drive 2.11 in accordance with the commutator signals of the commutator encoder 4.1 in connection with the signals of the position encoder 3.1 am Cylinder 1.1.
  • the drive 2.1 which is designed in particular as an asynchronous motor and feeds the basic torque M1 into the cylinder 1.1, is likewise supplied via the drive control 5.1.
  • FIG. 3 shows the moment M to be fed into the cylinder 1.1 by the drives 2.1 and 2.11.
  • the average moment M1 is fed into the cylinder 1.1 according to FIG. 1 by the drive 2.1.
  • the highly dynamic drive 2.11 also feeds in the short-term torque changes which occur during one revolution of the cylinder 1.1 and thus the correspondingly driven assembly and which have a maximum amplitude of the amount M2.
  • the highly dynamic drive 2.11 at certain times increases the torque M to be fed into the cylinders 1.1 and at other times reduces it in an electrically braking manner, so that the angular value detected by the position sensor 3.1 is brought into agreement in accordance with a predetermined desired value. From the illustration according to FIG. 3 it is clear that the highly dynamic drive 2.11 has to apply a torque of the bandwidth M2 in relation to the mean torque M1 to be applied by the drive 2.1.
  • Fig. 2 shows in principle several cylinders 1.1 to 1.6 of a sheet-fed printing machine, not shown.
  • Each of the cylinders 1.1 has a position sensor 3.1 to 3.6 in the form of an absolute or incremental angle sensor.
  • Each of these cylinders 1.1 to 1.6 is assigned a combination according to the invention of a drive 2.1 to 2.6 for feeding in the basic torque M1 and a highly dynamic drive 2.11 to 2.16 for feeding in the corresponding residual torque.
  • the highly dynamic drives 2.11 to 2.16 which are in particular designed as brushless DC motors, are additionally provided with commutator sensors 4.1 to 4.6.
  • the control and energization of the drives 2.1 to 2.6 and the highly dynamic drives 2.11 to 2.16 takes place via corresponding drive controls 5.1 to 5.6, these on the one hand read in the respective signals of the position sensors 3.1 to 3.6 and, in the case of the design of the highly dynamic drives 2.11 to 2.16 as brushless DC motors, also the signals of the commutator sensors 4.1 to 4.6.
  • a master computer 6 is additionally assigned to the individual drive controls 5.1 to 5.6. This control computer 6 is used in particular for those measures which are provided above in the event of failure of one or more components of the multi-motor drive according to the invention.
  • each cylinder 1.1 to 1.6 was driven, these cylinders 1.1 to 1.6 each comprising an entire assembly consisting of plate cylinder P, blanket cylinder G and a transfer cylinder T.
  • a drive which feeds in a basic torque M1 and additionally a highly dynamic drive which regulates the angular position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

The operating drive has a respective electric motor (2.1,...2.6) for each printing machine cylinder or cylinder group (1.1,...1.6) for providing the basic drive torque and a second high dynamic response motor (2.11,...2.16) for each cylinder or cylinder group providing a residual torque for ensuring synchronous rotation of the cylinder or cylinder groups. Pref. the motors providing the basic drive torques are provided by asynchronous motors, the high dynamic response motors provided by brushless DC motors, the drive controls (5.1,...5.6) of both sets of motors coupled to a microprocessor (6).

Description

Die Erfindung betrifft ein Mehrmotorenantrieb für eine Druckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a multi-motor drive for a printing press according to the preamble of claim 1.

Herkömmliche Bogenoffsetdruckmaschinen werden in der Regel von einem Gleichstrommotor über einen durchgehenden Räderzug angetrieben. Insbesondere wegen der einzelnen Kanalabrollungen zwischen Platten- und Gummituch sowie Gummi-und Gegendruckzylinder entstehen Torsionsschwingungen in dem elastisch verformbaren Getriebezug, was zu Druckschwierigkeiten führt. Auch ist es bekannt, neben dem durchgehenden Getriebezug zusätzlich eine Längswelle vorzusehen und die über die Längswelle fließende Leistung mittels ein oder mehrerer Getriebe in den Räderzug einzuspeisen. Hierdurch ergibt sich zwar eine Versteifung des Getriebesystems, gleichzeitig wird aber der mechanische Bauaufwand erhöht. Auch sind Lösungen bekannt geworden, bei welchen mehrere elektrisch geregelte Antriebe Leistung in einen durchgehenden Räderzug einspeisen. Auch diese Lösungen bedingen den hohen Bauaufwand hinsichtlich des durchgehenden Räderzuges und vermögen nur bedingt die nach wie vor auftretenden Torsionsschwingungen zu dämpfen.Conventional sheetfed offset presses are usually driven by a DC motor via a continuous wheel train. In particular because of the individual channel unrolling between plate and rubber blanket and rubber and impression cylinder, torsional vibrations occur in the elastically deformable gear train, which leads to pressure problems. It is also known to provide a longitudinal shaft in addition to the continuous gear train and to feed the power flowing over the longitudinal shaft into the wheel train by means of one or more gears. This results in a stiffening of the transmission system, but at the same time increases the mechanical construction effort. Solutions have also become known in which several electrically controlled drives feed power into a continuous wheel train. These solutions also involve the high construction costs with regard to the continuous gear train and are only able to a limited extent to dampen the torsional vibrations that still occur.

Aus der DE 4 322 741 A1 ist ein elektrisches Antriebssystem für eine Druckmaschine bekannt, bei welchem insbesondere vorgesehen ist, die Zylinder mit jeweils einem Motor zu versehen und über eine entsprechende Steuerung drehwinkelsynchron zueinander anzutreiben. Dazu sind direkt an den Zylindern Winkellagegeber angeordnet, deren Signale von einer gemeinsamen Steuerung zu entsprechendem drehwinkelsynchronem Lauf der einzelnen Zylindern ausgewertet werden. Da bei der Umdrehung eines Zylinders das Lastmoment aber stark schwankt, sind an den Antrieb entsprechend hohe qualitative Anforderungen zu stellen. Zum einen muß über eine Zylinderumdrehung die Winkellage konstant gewährleistet sein, ferner muß der Zylinder in einem vorgegebenen Drehzahlbereich anzutreiben sein. Schließlich müssen noch zusätzliche Maßnahmen ergriffen werden, um gerade bei einer Bogendruckmaschine, insbesondere Bogenoffsetdruckmaschine zu gewährleisten, daß eine Relativverdrehung der Greifereinrichtung aufweisenden Zylinder über ein vorgegebenes Maß hinaus nicht möglich ist, um Beschädigungen der Zylinderoberfläche und/oder der Greifereinrichtungen zu vermeiden.An electric drive system for a printing press is known from DE 4 322 741 A1, in which provision is made in particular to provide the cylinders with one motor each and to drive them in synchronism with one another by means of a corresponding control. For this purpose, angular position transmitters are arranged directly on the cylinders, the signals of which are evaluated by a common control for corresponding rotation-synchronous operation of the individual cylinders. However, since the load torque fluctuates greatly when a cylinder rotates, the drive must meet correspondingly high quality requirements. On the one hand, the angular position must be constantly guaranteed over a cylinder revolution, and the cylinder must also be in a predetermined position Speed range to be driven. Finally, additional measures must be taken in order to ensure, particularly in the case of a sheet-fed printing machine, in particular a sheet-fed offset printing machine, that a relative rotation of the cylinders having the gripper device is not possible beyond a predetermined amount, in order to avoid damage to the cylinder surface and / or the gripper devices.

Aus der DE 4 202 722 A1 ist eine Sicherheitseinrichtung für die Regelung oder Steuerung von Antriebseinheiten einer Druckmaschine bekannt, bei welcher die Zylinder einzelne Antriebe aufweisen. Um zu vermeiden, daß bei bogenverarbeitenden Druckmaschinen die mit Einzelantrieben versehenen Zylinder über ein vorgegebenes Toleranzmaß relativ zueinander verdreht werden können, ist eine mechanische Kupplung vorgesehen, welche derartig ausgebildet ist, so daß die Zylinder nicht über eben dieses vorgegebene Maß relativ zueinander verdreht werden können. Im störungsfreien Regelfall weisen die entsprechenden Kupplungsteile dabei keinen Kontakt miteinander auf dies ist erst dann der Fall, wenn oben besagte und zu einer Zerstörung führende Relativverdrehung über ein vorgegebenes Maß hinaus vorliegt. Um den winkelsynchronen Gleichlauf der Zylinder zu erzielen, müssen aber ebenfalls relativ aufwendig bauende Antriebe für die einzelnen Aggregate bzw. Zylinder verwendet werden.DE 4 202 722 A1 discloses a safety device for regulating or controlling drive units of a printing press, in which the cylinders have individual drives. In order to avoid that in sheet-processing printing machines the cylinders provided with individual drives can be rotated relative to one another over a predetermined tolerance dimension, a mechanical coupling is provided which is designed in such a way that the cylinders cannot be rotated relative to one another over precisely this predetermined dimension. In the normal case, the corresponding coupling parts have no contact with each other. This is only the case if the above-mentioned relative rotation leading to destruction is present beyond a predetermined amount. In order to achieve the synchronous synchronism of the cylinders, relatively complex drives for the individual units or cylinders must also be used.

Aus der DE 4 137 979 A1 ist ein Antrieb für eine Druckmaschine mit mehreren Druckwerken bekannt, bei der die einzelnen Druckwerke oder Druckwerksgruppen mechanisch voneinander entkoppelt sind und jeder dieser Gruppen einen eigenen Antriebsmotor aufweist. Es ist eine Vorrichtung zur Winkelregelung vorgesehen, welche dazu ausgebildet ist, eine zulässige Drehwinkelabweichung der einzelnen Druckwerke bzw. Druckwerksgruppen derartig vorzugeben, so daß diese bei derjenigen Drehwinkelstellung, welche der Bogenübergabe entspricht, minimal ist. Mit diesem Antrieb soll die Passerqualität verbessert werden. Auch hier sind relativ hohe Anforderungen an den elektrischen Antrieb der einzelnen Baugruppen bzw. Zylinder zu stellen, um einerseits die drehwinkelabhängige Last der Zylinder bzw. Baugruppen in einem weiten Drehzahlbereich antreiben zu können.DE 4 137 979 A1 discloses a drive for a printing press with a plurality of printing units, in which the individual printing units or printing unit groups are mechanically decoupled from one another and each of these groups has its own drive motor. A device for angle control is provided, which is designed to specify a permissible angle of rotation deviation of the individual printing units or printing unit groups in such a way that this is minimal at the angle of rotation position which corresponds to the sheet transfer. The register quality is to be improved with this drive. Here, too, relatively high demands are to be made of the electrical drive of the individual assemblies or cylinders in order to be able to drive the load of the cylinders or assemblies depending on the angle of rotation on the one hand in a wide speed range.

Aus der EP 0 355 442 B1 ist ein Verfahren sowie eine Einrichtung zur Reduzierung der Drehmomentbeanspruchung aufeinen mittels eines Elektromotors angetriebenen Systems, insbesondere einer Druckmaschine bekannt. Bei diesem System erfolgt eine Ansteuerung des Antriebsmotors derart, so das Änderungen des Lastmomentes auf einem näherungsweise konstanten Wert gehalten werden. Dies bedingt, daß die Drehzahl einer derartigen Druckmaschine keine zeitlich konstante Größe mehr ist, so daß ein derartiges Antriebsprinzip nur in sehr aufwendiger Weise auf eine Maschine übertragbar ist, bei der die Zylinder und/oder einzelnen Baugruppen jeweils mit einem Einzelantrieb versehen sind.EP 0 355 442 B1 discloses a method and a device for reducing the torque load on a system driven by an electric motor, in particular a printing press. In this system, the drive motor is controlled in such a way that changes in the load torque are kept at an approximately constant value. This means that the speed of such a printing machine is no longer a constant in time, so that such a drive principle can only be transferred in a very complex manner to a machine in which the cylinders and / or individual assemblies are each provided with an individual drive.

Aufgabe der vorliegenden Erfindung ist es daher, einen Mehrmotorenantrieb für eine Druckmaschine derartig zu erweitern, so daß bei vorgegebenen Anforderungen hinsichtlich der Gleichlaufsynchronität der einzeln angetriebenen Zylinder und/oder Baugruppen der Kostenaufwand hinsichtlich der zu verwendenden Antriebe spürbar gesenkt werden kann. Ferner soll durch das zu schaffende System auch eine Sicherheit hinsichtlich des Ausfalls elektrischer und/oder sonstiger Antriebskomponenten gegeben sein.The object of the present invention is therefore to expand a multi-motor drive for a printing press in such a way that, given the requirements for synchronism of the individually driven cylinders and / or assemblies, the cost of the drives to be used can be reduced appreciably. Furthermore, the system to be created should also provide security with regard to the failure of electrical and / or other drive components.

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, daß jeder einzeln angetriebene Zylinder und/oder Baugruppe mit zwei Antrieben versehen ist. Durch den ersten Antrieb wird ein Grundmoment in den Zylinder und/oder Baugruppe eingeleitet, also dasjenige Antriebsmoment, welches der Zylinder bzw. die Baugruppe im Mittel bei einer Umdrehung benötigt. Der zweite diesem Zylinder bzw. der Baugruppe zugeordnete Antrieb ist erfindungsgemäß derartig ausgebildet, daß dieser lediglich eine derartige Dynamik hinsichtlich dem verbleibendenAntriebsmoment aufweist, um die während einer Zylinder-bzw. Baugruppenumdrehung auftretenden kurzzeitigen Lastmomente auszugleichen. Der drehwinkelsynchrone Lauf des Zylinders bzw. der Baugruppe der Druckmaschine wird somit durch diesen zweiten, hochdynamischen Antrieb, der vorzugsweise als bürstenloser Gleichstrommotor ausgebildet ist, bewirkt.According to the invention it is provided that each individually driven cylinder and / or assembly is provided with two drives. The first drive introduces a basic torque into the cylinder and / or assembly, that is to say that drive torque which the cylinder or assembly requires on average during one revolution. According to the invention, the second drive assigned to this cylinder or to the assembly is designed such that it only has such a dynamic range with respect to the remaining drive torque that the cylinder or Compensate module rotation occurring short-term load moments. The rotation-synchronous running of the cylinder or the assembly of the printing press is thus brought about by this second, highly dynamic drive, which is preferably designed as a brushless DC motor.

Durch die erfindungsgemäße Aufteilung der Leistungseinspeisung über zwei Antriebe, wobei ein Antrieb hochdynamisch mit einem geringeren Leistungsbedarf und der zweite Antrieb hinsichtlich der Winkelsteuerbarkeit eine geringere Dynamik aber eine höhere Leistung aufweist, ergibt sich eine deutliche Senkung hinsichtlich dem Kostenaufwand. Ferner kann vorgesehen sein, daß der das Grundmoment in den Zylinder bzw. die Baugruppe einspeisende erste Antrieb mit geringerer Dynamik über ein Getriebe (Untersetzungsgetriebe) mit dem Zylinder bzw. der Baugruppe verbunden ist. Bei diesem Antrieb kann es sich in vorteilhafter Weise um einen besonders kostengünstigen Drehstrommotor, insbesondere mit gerechnetem Feldmodell handeln. Der zweite, hochdynamische und vorzugsweise als bürstenloser Gleichstrommotor ausgebildete Antrieb ist dann direkt oder über ein drehsteifes und spielfreies Getriebe mit dem Zapfen des Zylinders bzw. einem Zapfen eines Zylinders der Baugruppe der Druckmaschine verbunden.By dividing the power feed via two drives according to the invention, one drive being highly dynamic with a lower power requirement and the second Drive with regard to the angular controllability has a lower dynamic but a higher performance, there is a significant reduction in the cost. It can further be provided that the first drive, which feeds the basic torque into the cylinder or the assembly, is connected to the cylinder or the assembly with less dynamics via a gear (reduction gear). This drive can advantageously be a particularly inexpensive three-phase motor, in particular with a calculated field model. The second, highly dynamic drive, which is preferably designed as a brushless DC motor, is then connected directly or via a torsionally rigid and backlash-free gear to the journal of the cylinder or a journal of a cylinder of the assembly of the printing press.

Durch das erfindungsgemäße Antriebskonzept ergibt sich eine Reihe von Vorteilen, wobei der Kostenvorteil bei der Realisierung eines einzel- bzw. gruppenweisen Antriebes trotz der pro Zylinder bzw. Baugruppe vorzusehenden zwei Antrieben bereits vorstehend erläutert worden ist. Ein weiterer Vorteil der Erfindung ergibt sich dabei, daß beim Ausfall beispielsweise des hochdynamischen und auf die kurzzeitig schwankende Drehmomentsituation ausgelegten Antriebes dieser Zylinder bzw. die Baugruppe über den zweiten Antrieb in definierter Weise bis zum Stillstand heruntergefahren werden kann. Die übrigen Zylinder bzw. Baugruppen folgen dabei dem Zeitverhalten dieses Zylinders bzw. dieser Baugruppe. Auch der Ausfall eines das Grundmoment in dem Zylinder bzw. die Baugruppe einspeisenden Antriebes vermag die eingangs der Beschreibung angedeuteten mechanischen Kollisionen zu vermeiden helfen. In diesem Falle erfolgt das Herunterfahren des Zylinders bzw. der Baugruppe Ober den hochdynamischen Antieb, was kein Problem darstellt, da die heute verfügbaren Antriebe kurzzeitig überlastbar sind.The drive concept according to the invention results in a number of advantages, the cost advantage in the implementation of a single or group-wise drive having been provided in spite of the two drives to be provided per cylinder or assembly. Another advantage of the invention is that, in the event of failure of, for example, the highly dynamic drive designed for the briefly fluctuating torque situation, this cylinder or the assembly can be shut down in a defined manner to a standstill via the second drive. The remaining cylinders or assemblies follow the timing of this cylinder or assembly. The failure of a drive feeding the basic torque in the cylinder or the assembly can also help to avoid the mechanical collisions indicated at the beginning of the description. In this case, the cylinder or the assembly is shut down via the highly dynamic drive, which is not a problem since the drives available today can be overloaded for a short time.

Sollten beide Antriebe eines Zylinders bzw. einer Baugruppe ausfallen, so ist erfindungsgemäß weiterbildend vorgesehen, daß das Lagegeber-Signal dieses Zylinders bzw. dieser Baugruppe als Positions-Sollwert für alle übrigen Aggregate verwendet wird. In diesem Falle erfolgt das Auslaufen dieses Zylinders bzw. der Baugruppe bis zum Stillstand, wobei sämtliche übrigen Zylinder bzw. Baugruppen winkelsynchron dieser Leitachse folgen. Der Ausfall der Versorgungsspannung (Netzausfall) kann ebenfalls durch das erfindungsgemäße Antriebssystem aufgefangen werden, in dem hier die Umrichter für die Antriebe beispielsweise über einen Gleichspannungszwischenkreis miteinander verbunden sind. Die einzelnen Antriebe werden dann an einer Rampe bis zum Stillstand heruntergefahren, wobei diese derartig bemessen ist, daß zu jedem Zeitpunkt durch die beim Bremsen rückgespeiste Energie noch die volle Gleichspannung zur Verfügung steht. In einfacher Weise kann dies dadurch bewirkt werden, daß eine möglichst steile Abtourrampe vorgegeben wird. Sind die Umrichter der einzelnen Antriebe nicht über einen Gleichspannungszwischenkreis miteinander verbunden, so bauen die Antriebe die anfallende überschüssige Bremsenergie über jeweils in den einzelnen Zwischenkreisen angordnete Brems-Chopper ab. In beiden voranstehend beschriebenen Verfahrensweise zum Herunterfahren des Gesamtsystems im Falle des Ausfalls der Spannungsversorgung ist dabei ein ausreichend dimensionierter Puffer in Form von Kondensatoren bzw. Akkumulatoren im Zwischenkreis vorgesehen.If both drives of a cylinder or of an assembly fail, further development according to the invention provides that the position transmitter signal of this cylinder or of this assembly is used as the position setpoint for all other units. In this case, this cylinder or the assembly runs out to a standstill, with all other cylinders or assemblies following this master axis at an angle-synchronous manner. The failure of the supply voltage (power failure) can also be compensated for by the drive system according to the invention, in which the converter for the drives are connected to one another, for example, via a DC voltage intermediate circuit. The individual drives are then brought down to a standstill on a ramp, which is dimensioned such that full DC voltage is still available at all times due to the energy regenerated during braking. This can be achieved in a simple manner by specifying the steepest possible downhill ramp. If the inverters of the individual drives are not connected to one another via a DC voltage intermediate circuit, the drives dissipate the excess braking energy that arises via brake choppers arranged in the individual intermediate circuits. In both of the above-described procedures for shutting down the overall system in the event of a power supply failure, a sufficiently dimensioned buffer in the form of capacitors or accumulators is provided in the intermediate circuit.

Für den Fall, daß beide Antriebe in zwei unterschiedlichen Baugruppen bzw. Zylindern gleichzeitig ausfallen kann vorgesehen sein, daß zusätzlich und aus dem Stand der Technik bekannte mechanische Kollisionsschutze zwischen den einzelnen Zylindern bzw. Baugruppen angeordnet sind. Diese bewirken in an sich bekannter Weise, daß eine Relativverdrehung der Zylinder bzw. Baugruppen über ein vorgegebenes Maß hinaus vermieden wird.In the event that both drives fail in two different assemblies or cylinders at the same time, it can be provided that mechanical collision protection known from the prior art is additionally arranged between the individual cylinders or assemblies. In a manner known per se, these have the effect that a relative rotation of the cylinders or assemblies beyond a predetermined amount is avoided.

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

Fig. 1
der erfindungsgemäße Antrieb für eine Baugruppe einer Bogenoffsetdruckmaschine,
Fig. 2
der Antrieb mehrerer Zylinder bzw. Baugruppen einer Bogenoffsetdruckmaschine, und
Fig. 3
schematisch den Drehmomentverlauf als Funktion der Zeit.
Furthermore, an embodiment of the invention is explained with reference to the drawings. It shows:
Fig. 1
the drive according to the invention for an assembly of a sheetfed offset printing press,
Fig. 2
the drive of several cylinders or assemblies of a sheetfed offset printing machine, and
Fig. 3
schematically the torque curve as a function of time.

Das nachfolgend beschriebene Ausführungsbeispiel beschreibt die erfindungsgemäße Antriebslösung anhand eines gruppenweisen Antriebes. Gemäß Fig. 1 wird hier über zwei Antriebe 2.1 und 2.11 der den zu bedruckenden Bogen führende Zylinder 1.1 eines Druckwerkes angetrieben. Die Baugruppe des angetriebenen Zylinders 1.1, also das entsprechende Druckwerk der Bogenoffsetdruckmaschine weist dabei ferner noch einen von dem Zylinder 1.1 angetriebenen Transferzylinder T, einen Gummituchzylinder G sowie ein Plattenzylinder P auf. Diese hier genannten Zylinder sind dabei über einen nicht dargestellten durchgehenden Räderzug miteinander verbunden. Zu einem nächsten Druckwerk welches die gleichen Komponenten aufweist, besteht aber keine mechanische Kopplung.The exemplary embodiment described below describes the drive solution according to the invention using a group drive. According to FIG. 1, the cylinder 1.1 of a printing unit, which guides the sheet to be printed, is driven here by two drives 2.1 and 2.11. The assembly of the driven cylinder 1.1, that is to say the corresponding printing unit of the sheet-fed offset printing press, also has a transfer cylinder T driven by the cylinder 1.1, a blanket cylinder G and a plate cylinder P. These cylinders mentioned here are connected to each other via a continuous gear train, not shown. However, there is no mechanical coupling to a next printing unit that has the same components.

Wie Figur 1 rein prinzipiell dargestellt, ist der Zylinder 1.1 der Baugruppe mit einem Antrieb 2.1 sowie einem hochdynamischen Antrieb 2.11 verbunden. Die Antriebe 2.1 sowie 2.11 stehen dabei mit einer Antriebssteuerung 5.1 in Wirkverbindung, welche einerseits mit einem direkt mit dem Zylinder 1.1 verbundenen Lagegeber 3.1 und andererseits mit einem am hochdynamischen Antrieb 2.11 angebrachten Kommutatorgeber 4.1 verbunden ist. Die Antriebssteuerung 5.1 übernimmt somit die Bestromung des hochdynamischen Antriebes 2.11 entsprechend den Kommutatorsignalen des Kommutatorgebers 4.1 in Verbindung mit den Signalen des Lagegebers 3.1 am Zylinder 1.1. Die Bestromung des insbesondere als Asynchronmotor ausgebildeten und das Grundmoment M1 in den Zylinder 1.1 einspeisenden Antriebes 2.1 erfolgt dabei ebenfalls über die Antriebssteuerung 5.1.As shown in Figure 1 purely in principle, the cylinder 1.1 of the assembly is connected to a drive 2.1 and a highly dynamic drive 2.11. The drives 2.1 and 2.11 are in operative connection with a drive control 5.1, which is connected on the one hand to a position sensor 3.1 directly connected to the cylinder 1.1 and on the other hand to a commutator sensor 4.1 attached to the highly dynamic drive 2.11. The drive control 5.1 thus takes over the energization of the highly dynamic drive 2.11 in accordance with the commutator signals of the commutator encoder 4.1 in connection with the signals of the position encoder 3.1 am Cylinder 1.1. The drive 2.1, which is designed in particular as an asynchronous motor and feeds the basic torque M1 into the cylinder 1.1, is likewise supplied via the drive control 5.1.

Fig. 3 zeigt den durch die Antriebe 2.1 sowie 2.11 in den Zylinder 1.1 einzuspeisende Moment M. Erfindungsgemäß ist nun vorgesehen, daß das während einer Umdrehung des Zylinders 1.1 bzw. der durch diesen Zylinder 1.1 angetriebenen Baugruppe aufzubringende Moment M aus einem mittleren Moment M1 sowie einem den überlagerten und oder Maximal-Amplitude aufweisenden Momentenanteil M2 besteht. Erfindungsgemäß ist nun vorgesehen, daß durch den Antrieb 2.1 das mittlere Moment M1 in den Zylinder 1.1 gemäß Fig. 1 eingespeist wird. Der hochdynamische Antrieb 2.11 speist ferner die sich während einer Umdrehung des Zylinders 1.1 und somit der entsprechend getriebenen Baugruppe ergebenden kurzfristigen Momentenänderungen ein, welche eine Maximal-Amplitude des Betrages M2 aufweisen. Dementsprechend ergibt sich, daß der hochdynamische Antrieb 2.11 zu bestimmten Zeiten das in den Zylindern 1.1 einzuspeisende Moment M vergrößert und zu anderen Zeiten elektrisch bremsend verringert, so daß der über den Lagegeber 3.1 erfaßte Winkelwert entsprechend einem vorgegebenen Sollwert in Ubereinstimmung gebracht wird. Aus der Darstellung gemäß Fig. 3 wird deutlich, daß der hochdynamische Antrieb 2.11 ein, bezogen auf das mittlere und vom Antrieb 2.1 aufzubringendes Moment M1, ein Moment der Bandbreite M2 aufzubringen hat.3 shows the moment M to be fed into the cylinder 1.1 by the drives 2.1 and 2.11. According to the invention, it is now provided that the torque M to be applied during a revolution of the cylinder 1.1 or the assembly driven by this cylinder 1.1 from an average moment M1 and a torque component M2 which has the superimposed and or maximum amplitude. According to the invention, it is now provided that the average moment M1 is fed into the cylinder 1.1 according to FIG. 1 by the drive 2.1. The highly dynamic drive 2.11 also feeds in the short-term torque changes which occur during one revolution of the cylinder 1.1 and thus the correspondingly driven assembly and which have a maximum amplitude of the amount M2. Accordingly, it follows that the highly dynamic drive 2.11 at certain times increases the torque M to be fed into the cylinders 1.1 and at other times reduces it in an electrically braking manner, so that the angular value detected by the position sensor 3.1 is brought into agreement in accordance with a predetermined desired value. From the illustration according to FIG. 3 it is clear that the highly dynamic drive 2.11 has to apply a torque of the bandwidth M2 in relation to the mean torque M1 to be applied by the drive 2.1.

Fig. 2 zeigt prinzipiell mehrere Zylinder 1.1 bis 1.6 einer nicht weiter dargestellten Bogendruckmaschine. Jeder der Zylinder 1.1 weist dabei einen Lagegeber 3.1 bis 3.6 in Form eines Absolut- bzw. Inkrementalwinkelgebers auf. Jedem dieser Zylinder 1.1 bis 1.6 ist dabei eine erfindungsgemäße Kombination eines Antriebes 2.1 bis 2.6 zur Einspeisung des Grundmomentes M1 sowie ein hochdynamischer Antrieb 2.11 bis 2.16 zur Einspeisung des entsprechenden Restmomentes zugeordnet. Die hochdynamischen und insbesondere als bürstenlose Gleichstrommotore ausgebildeten Antriebe 2.11 bis 2.16 sind dabei zusätzlich noch mit Kommutatorgebern 4.1 bis 4.6 versehen.Fig. 2 shows in principle several cylinders 1.1 to 1.6 of a sheet-fed printing machine, not shown. Each of the cylinders 1.1 has a position sensor 3.1 to 3.6 in the form of an absolute or incremental angle sensor. Each of these cylinders 1.1 to 1.6 is assigned a combination according to the invention of a drive 2.1 to 2.6 for feeding in the basic torque M1 and a highly dynamic drive 2.11 to 2.16 for feeding in the corresponding residual torque. The highly dynamic drives 2.11 to 2.16, which are in particular designed as brushless DC motors, are additionally provided with commutator sensors 4.1 to 4.6.

Die Ansteuerung sowie Bestromung der Antriebe 2.1 bis 2.6 sowie der hochdynamischen Antriebe 2.11 bis 2.16 erfolgt dabei über entsprechende Antriebssteuerungen 5.1 bis 5.6, wobei diese einerseits die jeweiligen Signale der Lagegeber 3.1 bis 3.6 sowie im Falle der Ausbildung der hochdynamischen Antriebe 2.11 bis 2.16 als bürstenlose Gleichstrommotore zusätzlich noch die Signale der Kommutatorgeber 4.1 bis 4.6 einlesen. Den einzelnen Antriebssteuerungen 5.1 bis 5.6 ist zusätzlich noch ein Leitrechner 6 zugeordnet. Über diesen Leitrechner 6 erfolgen insbesondere diejenigen Maßnahmen, welche zuvorstehend bei Ausfällen eines oder mehrerer Komponenten des erfindungsgemäßen Mehrmotorenantriebes vorgesehen sind.The control and energization of the drives 2.1 to 2.6 and the highly dynamic drives 2.11 to 2.16 takes place via corresponding drive controls 5.1 to 5.6, these on the one hand read in the respective signals of the position sensors 3.1 to 3.6 and, in the case of the design of the highly dynamic drives 2.11 to 2.16 as brushless DC motors, also the signals of the commutator sensors 4.1 to 4.6. A master computer 6 is additionally assigned to the individual drive controls 5.1 to 5.6. This control computer 6 is used in particular for those measures which are provided above in the event of failure of one or more components of the multi-motor drive according to the invention.

Im zuvor beschriebenen Ausführungsbeispiel erfolgte der Antrieb jeweils eines Zylinders 1.1 bis 1.6, wobei diese Zylinder 1.1 bis 1.6 jeweils eine gesamte Baugruppe bestehend aus Plattenzylinder P, Gummituchzylinder G sowie einem Transferzylinder T umfaßt. Selbstverständlich kann es ebenfalls unter Ausnutzung der Erfindung möglich sein, jeden einzelnen Zylinder innerhalb eines Druckwerkes und somit sämtliche Zylinder innerhalb einer Druckmaschine durch die erfindungsgemäße Kombination eines ein Grundmoment M1 einspeisenden Antriebes sowie zusätzlich eines hochdynamischen und die Winkellage regelnden Antriebes erfolgen.In the exemplary embodiment described above, each cylinder 1.1 to 1.6 was driven, these cylinders 1.1 to 1.6 each comprising an entire assembly consisting of plate cylinder P, blanket cylinder G and a transfer cylinder T. Of course, it can also be possible, taking advantage of the invention, to carry out each individual cylinder within a printing unit and thus all cylinders within a printing press by the combination according to the invention of a drive which feeds in a basic torque M1 and additionally a highly dynamic drive which regulates the angular position.

BezugszeichenlisteReference list

1.1 - 1.61.1 - 1.6
Zylindercylinder
2.1 - 2.62.1 - 2.6
Antrieb (Grundmoment)Drive (basic torque)
2.11-2.162.11-2.16
Antrieb (dynamisch)Drive (dynamic)
3.1 - 3.63.1 - 3.6
LagegeberPosition transmitter
4.1 - 4.64.1 - 4.6
KommutatorgeberCommutator encoder
5.1 - 5.65.1 - 5.6
AntriebssteuerungDrive control
66
LeitrechnerHost computer
M,. M1, M2M ,. M1, M2
DrehmomentTorque
TT
TransferzylinderTransfer cylinder
GG
GummituchzylinderBlanket cylinder
PP
PlattenzylinderPlate cylinder

Claims (4)

Mehrmotorenantrieb für eine Druckmaschine, insbesondere Bogenoffsetdruckmaschine, bei welcher einzelne Achsen bzw. Zylinder und/oder mehrere Zylinder aufweisende Baugruppen durch jeweils zugeordnete Antriebe einzeln und winkelsynchron zueinander antreibbar sind,
dadurch gekennzeichnet,
daß jeder Achse bzw. Zylinder (1.1 - 1.6) bzw. mehrere Zylinder (1.1 - 1.6) aufweisenden Baugruppe jeweils einen ersten Antrieb (2.1 - 2.6) zur Einspeisung eines sich während einer Umdrehung der Zylinder (1.1 - 1.6) im Mittel ergebenden Momentes (M1) aufweist und ferner ein weiterer hochdynamischer Antrieb (2.11 - 2.16) vorgesehen ist, über welchen das verbleibende und die Winkelsynchronität realisierende Moment (M2) einspeisbar ist.Multi-motor drive for a printing press, in particular sheet-fed offset printing press, in which individual axes or cylinders and / or assemblies comprising several cylinders can be driven individually and in synchronism with one another by respective assigned drives,
characterized,
that each axle or cylinder (1.1 - 1.6) or several cylinders (1.1 - 1.6) assembly each have a first drive (2.1 - 2.6) for feeding in a torque that arises during one revolution of the cylinders (1.1 - 1.6) on average ( M1) and a further highly dynamic drive (2.11 - 2.16) is provided, via which the remaining torque (M2) realizing the angular synchronism can be fed. Mehrmotorenantrieb nach Anspruch 1,
dadurch gekennzeichnet,
daß der Antrieb (2.1 - 2.6), durch welchen das im Mittel bei einer Umdrehung eines Zylinders (1.1 - 1.6) einzuspeisende Grundmoment erfolgt, als ein Asynchronmotor ausgebildet ist.Multi-motor drive according to claim 1,
characterized,
that the drive (2.1-2.6), by means of which the basic torque to be fed in on average during one revolution of a cylinder (1.1-1.6), is designed as an asynchronous motor. Mehrmotorenantrieb nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Antriebe (2.11 - 2.16), welche das zur Aufrechterhaltung der Winkelsynchronität einspeisende Moment (M2) aufbringen, als bürstenlose Gleichstrommotore ausgebildet sind, welche einen Komutatorgeber (4.1 - 4.11) aufweisen.Multi-motor drive according to claim 1 or 2,
characterized,
that the drives (2.11 - 2.16), which apply the torque (M2) to maintain the angular synchronism, are designed as brushless DC motors which have a commutator (4.1 - 4.11). Mehrmotorenantrieb nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die den Antrieben (2.1 - 2.6) sowie den hochdynamischen Antrieben (2.11 - 2.16) zugeordneten Antriebssteuerungen (5.1 - 5.6) mit einem Leitrechner (6) verbunden sind.Multi-motor drive according to one of the preceding claims,
characterized,
that the drive controls (5.1 - 5.6) assigned to the drives (2.1 - 2.6) and the highly dynamic drives (2.11 - 2.16) are connected to a master computer (6).
EP96109627A 1995-07-13 1996-06-15 Drive with several motors for a printing press Expired - Lifetime EP0753405B1 (en)

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DE19525593A DE19525593C2 (en) 1995-07-13 1995-07-13 Multi-motor drive for a printing press
DE19525593 1995-07-13

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EP0753405B1 EP0753405B1 (en) 1998-05-13

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6701836B2 (en) * 2001-03-12 2004-03-09 Heidelberger Druckmaschinen Ag Printing-machine drive system
EP1593501A2 (en) * 2004-05-04 2005-11-09 MAN Roland Druckmaschinen AG Printing press with d.c.voltage intermediate circuit
EP1593501A3 (en) * 2004-05-04 2009-09-30 manroland AG Printing press with d.c.voltage intermediate circuit
EP1961561A2 (en) * 2005-07-16 2008-08-27 manroland AG Method for operating a processing machine
EP1958770A2 (en) * 2005-07-16 2008-08-20 manroland AG Method for operating a processing machine
EP1961562A2 (en) * 2005-07-16 2008-08-27 manroland AG Method for operating a processing machine
EP1743766A3 (en) * 2005-07-16 2007-12-26 MAN Roland Druckmaschinen AG Processing machine and method for operating this machine
EP1961560A2 (en) * 2005-07-16 2008-08-27 manroland AG Method for operating a processing machine
EP1961560A3 (en) * 2005-07-16 2009-04-15 manroland AG Method for operating a processing machine
EP1961562A3 (en) * 2005-07-16 2009-04-15 manroland AG Method for operating a processing machine
EP1961563A3 (en) * 2005-07-16 2009-04-15 manroland AG Processing machine
EP1958770A3 (en) * 2005-07-16 2009-04-15 manroland AG Method for operating a processing machine
EP1961561A3 (en) * 2005-07-16 2009-08-19 manroland AG Method for operating a processing machine
EP1743770A3 (en) * 2005-07-16 2007-10-10 MAN Roland Druckmaschinen AG Printing press and method for operating a printing press

Also Published As

Publication number Publication date
JP2804255B2 (en) 1998-09-24
JPH0929942A (en) 1997-02-04
ATE166030T1 (en) 1998-05-15
DE59600201D1 (en) 1998-06-18
DE19525593C2 (en) 1997-04-30
US5720222A (en) 1998-02-24
DE19525593A1 (en) 1997-01-16
EP0753405B1 (en) 1998-05-13

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