EP1792728B1 - Printing machine and its method of operating - Google Patents

Printing machine and its method of operating Download PDF

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Publication number
EP1792728B1
EP1792728B1 EP06021692A EP06021692A EP1792728B1 EP 1792728 B1 EP1792728 B1 EP 1792728B1 EP 06021692 A EP06021692 A EP 06021692A EP 06021692 A EP06021692 A EP 06021692A EP 1792728 B1 EP1792728 B1 EP 1792728B1
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EP
European Patent Office
Prior art keywords
printing
cylinder
printing couple
regulating device
register
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EP06021692A
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German (de)
French (fr)
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EP1792728A2 (en
EP1792728A3 (en
Inventor
Bernd Dipl.-Ing. Lindner
Holger Dr.-Ing. Wiese
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Manroland AG
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Manroland AG
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Publication of EP1792728A3 publication Critical patent/EP1792728A3/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
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/025—Registering devices
    • 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
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices

Definitions

  • the invention relates to a printing press according to the preamble of claim 1.
  • the invention further relates to a method for operating a printing press according to the preamble of claim 4.
  • a sheet-fed press with several printing units wherein each of the printing units comprises a counter-pressure cylinder, a rolling on the impression cylinder rubber cylinder, a rolling on the blanket cylinder cylinder and an inking unit and a dampening unit.
  • the impression cylinders, the blanket cylinders, the inking units and the dampening units of the printing units are driven by a main drive.
  • the cylinders of the printing units are associated with their own drives or direct drives, which drive the form cylinder decoupled from the main drive of the printing press eigenmotorisch.
  • the impression cylinders, the blanket cylinders, the inking units and the dampening units of the printing units are driven by the main drive, while the forme cylinders of the printing units are driven by the respective direct drives, synchronized with the main drive.
  • the document DE 102 46 072 A1 discloses a printing machine with a main drive and a direct drive.
  • the circumferential register correction value makes possible a circumferential register correction between the individual printing units, whereby in the prior art this circumferential register correction value is constant over the entire load moment range of the printing press and therefore static. Therefore, for example, circumferential register deviations caused by speed changes or speed changes can not be compensated.
  • the present invention is based on the problem to provide a novel printing press and a method for operating the same.
  • the printing press has a control device of the form cylinder superordinate register control device to which the actual position values of the blanket cylinders of each printing unit can be fed, the register control device in the continuous printing operation, the personallysregisterkorrekturwert each printing unit depending on the actual position of the respective blanket cylinder adapts dynamically.
  • a register control device superimposed on the control devices of the forme cylinder dynamically adapts the circumferential register correction value for each printing unit in the continuous printing operation, for which purpose the position actual values of the blanket cylinders of the printing units can be fed to the register control device.
  • Circumferential register deviations caused by changes in the load torque state of the printing press, in particular by speed changes or speed changes of the printing press can be compensated for by the present invention.
  • an optimum print result can be provided over the entire load torque range of the printing press.
  • longitudinal shafts which are used in known from the prior art printing machines to compensate for circumferential register deviations, be dispensed with.
  • the register control device for each printing unit job-specific desired angular differences between the blanket cylinder of the respective printing unit and a blanket cylinder of a reference printing stored, wherein the register control device, if in the continuous printing operation based on the actual position values of the blanket cylinder for at least one printing unit a deviation from the for the same stored desired angular difference is determined, the corresponding circumferential register correction value dynamically adjusted by this deviation.
  • FIG. 1 Before referring to below Fig. 2 The present invention will be described in more detail with reference to FIG Fig. 1 the principle of a previously known sheet-fed printing machine with self-powered form cylinders and a circumferential register correction will be described.
  • Fig. 1 shows a highly schematic block diagram of a sheet-fed press known in practice in the range of four printing units 10, 11, 12 and 13, wherein each of the printing units comprises a counter-pressure cylinder 14, a rolling on the impression cylinder 14 blanket cylinder 15 and a rolling on the blanket cylinder 15 forme cylinder 16 ,
  • the form cylinder 16 are also referred to as a plate cylinder. With the form cylinders 16 act in Fig. 1 not shown inking units and dampening units of the printing units 10 to 13 together.
  • a transfer cylinder 17 is positioned in the illustrated embodiment, in order to transport printed sheets to be printed in the sheet-fed printing press from a printing unit to a subsequent printing unit.
  • the counter-pressure cylinders 14 of the printing units 10 to 13 and the transfer cylinders 17 positioned between the impression cylinders 14 of adjacent printing units thus serve the transport of printed sheets to be printed by the sheet-fed printing press and are therefore also referred to as sheet-guiding cylinders.
  • each printing unit 10 to 13 and the transfer cylinder 17 are driven by a main drive of the sheet-fed printing press, not shown.
  • the form cylinders 16 of the sheet-fed printing press are therefore self-powered form cylinders.
  • dampening units of the printing units 10 to 13 are driven either via the main drive of the sheet-fed press or on the respective, the forme cylinder 16 of the respective printing unit 10 to 13 associated with individual drive or direct drive.
  • each of the forme cylinder 16 of the printing units 10 to 13 of the sheet-fed press is associated with a control device 18 in addition to the direct drive not shown, each control device 18 of a printing unit as a position setpoint 19 for the respective forme cylinder 16 with a peripheral register correction value 20 offset actual position value 21st the blanket cylinder 15 of the respective printing unit can be fed.
  • control device 18 of the respective forme cylinder 16 On the basis of a control deviation 22 between the desired position 19 for the forme cylinder 16 of a printing unit and the corresponding actual position value 23 of the forme cylinder 16, the control device 18 of the respective forme cylinder 16 generates an actuating signal 24 for the direct drive of the respective forme cylinder 16, not shown.
  • the circumferential register correction values 20 for each of the printing units 10 to 13 of the sheet-fed press are set as shown in FIG Fig. 1 predetermined by a control device 25.
  • the circumferential register correction values 20 for each printing unit 10 to 13 are constant in the state of the art over the entire load moment range of the sheet-fed printing machine and thus static. Circumferential register deviations of the sheet-fed printing machine caused by changes in the load torque can therefore be compared with those of the prior art Fig. 1 known sheetfed press are not compensated.
  • load torque changes can be caused by speed changes or speed changes, by temperature changes or other events affecting the load torque of the printing press.
  • Fig. 2 shows a highly schematic block diagram of a sheet-fed press according to the invention, wherein the same reference numerals are used to avoid unnecessary repetition for the same modules.
  • the sheet-fed printing machine has a register control device 26 which is superordinate to the form cylinders 16 of the printing units 10 to 13.
  • the register control device 26 is supplied with the position actual values 21 of the blanket cylinders 15 of the printing units 10 to 13 as input variables.
  • the register control device 26 dynamically adjusts the circumferential register correction values 20 used to determine the position set values 19 for the forme cylinders 16 on the basis of these actual position values 21 of the blanket cylinders 15 so as to compensate for circumferential register deviations caused by load moment changes of the sheetfed press according to the present invention.
  • Lastmoment basic urge can be caused by speed changes or speed changes of the printing press.
  • the circumferential register correction values 20 are not static values that are constant over the entire load torque range, but rather dynamic values whose magnitude or magnitude is dependent on a circumferential register deviation that changes with load torque changes on the printing press.
  • a desired angular difference between the blanket cylinder 15 of the respective printing unit and a blanket cylinder of a reference printing unit is stored for each printing unit 10 to 13.
  • any printing unit of the sheet-fed press can be defined.
  • the registration control device 26 determines a deviation from the desired angular difference stored for the same in the continuous printing operation on the basis of the actual position values 21 of the blanket cylinders 15 for at least one printing unit 10 to 13, it dynamically adjusts the circumferential registration correction value 20 for this printing unit by the determined deviation at.
  • a dynamic setpoint adjustment for the position setpoint 19 of the respective forme cylinder 16 of the respective printing unit is realized in the continuous printing operation.
  • the reference angular differences stored in the register control device 26 are print job-specific desired angular differences, which are determined before execution of a print job during setup work and then stored or stored in the register control device 26.
  • the forme cylinder 16 are driven by self-motor, can be compensated by load torque changes, such as changes in speed or speed changes, caused circumferential register deviations in the printed image, for which purpose the register controller 26 is a setpoint correction for the position setpoint 19th the self-powered form cylinder 16 based on actual position values 21 of the corresponding blanket cylinder 15 makes. So-called start-up register changes to sheet-fed printing presses can be safely avoided with the present invention, even if the sheet-fed presses have no longitudinal shafts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Transplanting Machines (AREA)
  • Ink Jet (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

Printing machine has register regulating device (26) placed over regulating device (18) of printing cylinder (16). The position-actual values (21) of rubber cylinder (15) of each printing unit are supplied to the register regulating device as input values. The register regulating device of circumferential register correction value (20) of each printing unit can be adjusted dynamically depending on the position-actual value of respective rubber cylinder. An independent claim is also included for the method for operating printing machine.

Description

Die Erfindung betrifft eine Druckmaschine nach dem Oberbegriff des Anspruchs 1. Des weiteren betrifft die Erfindung ein Verfahren zum Betreiben einer Druckmaschine nach dem Oberbegriff des Anspruchs 4.The invention relates to a printing press according to the preamble of claim 1. The invention further relates to a method for operating a printing press according to the preamble of claim 4.

Aus dem Stand der Technik, nämlich aus der EP 0 812 683 A1 , ist eine Bogendruckmaschine mit mehreren Druckwerken bekannt, wobei jedes der Druckwerke einen Gegendruckzylinder, einen auf dem Gegendruckzylinder abrollenden Gummizylinder, einen auf dem Gummizylinder abrollenden Formzylinder sowie ein Farbwerk und ein Feuchtwerk umfasst. Bei der dort offenbarten Bogendruckmaschine werden die Gegendruckzylinder, die Gummizylinder, die Farbwerke sowie die Feuchtwerke der Druckwerke von einem Hauptantrieb angetrieben. Den Formzylindern der Druckwerke sind hingegen Eigenantriebe bzw. Direktantriebe zugeordnet, welche die Formzylinder entkoppelt vom Hauptantrieb der Druckmaschine eigenmotorisch antreiben. Unter Fortdruckbedingungen der Druckwerke werden die Gegendruckzylinder, die Gummizylinder, die Farbwerke sowie die Feuchtwerke der Druckwerke vom Hauptantrieb angetrieben, die Formzylinder der Druckwerke werden hingegen von den jeweiligen Direktantrieben angetrieben, und zwar synchronisiert zum Hauptantrieb.From the prior art, namely from the EP 0 812 683 A1 , A sheet-fed press with several printing units is known, wherein each of the printing units comprises a counter-pressure cylinder, a rolling on the impression cylinder rubber cylinder, a rolling on the blanket cylinder cylinder and an inking unit and a dampening unit. In the sheet-fed printing machine disclosed there, the impression cylinders, the blanket cylinders, the inking units and the dampening units of the printing units are driven by a main drive. The cylinders of the printing units, however, are associated with their own drives or direct drives, which drive the form cylinder decoupled from the main drive of the printing press eigenmotorisch. Under production conditions of the printing units, the impression cylinders, the blanket cylinders, the inking units and the dampening units of the printing units are driven by the main drive, while the forme cylinders of the printing units are driven by the respective direct drives, synchronized with the main drive.

Das Dokument DE 102 46 072 A1 offenbart eine Druckmaschine mit einem Hauptantrieb und einem Direktantrieb.The document DE 102 46 072 A1 discloses a printing machine with a main drive and a direct drive.

Zum eigenmotorischen Antrieb der Formzylinder ist bei aus der Praxis bekannten Druckmaschinen jedem der Formzylinder neben dem Direktantrieb eine Regeleinrichtung zugeordnet, die den Formzylinder im Fortdruckbetrieb derart synchron zum Gummizylinder des jeweiligen Druckwerks und damit synchron zum Hauptantrieb der Druckmaschine antreibt, dass der Regeleinrichtung jedes Formzylinders als Lage-Sollwert ein mit einem Umfangsregisterkorrekturwert verrechneter Lage-Istwert des jeweiligen Gummizylinders zuführbar ist.For self-propelled drive of the forme cylinder is known from the practice of each of the form cylinder next to the direct drive associated with a control device that drives the forme cylinder in the continuous printing operation synchronously to the blanket cylinder of the respective printing unit and thus synchronously to the main drive of the printing press that the control device of each forme cylinder as a location Setpoint offset with a peripheral register correction value offset actual position of the respective blanket cylinder.

Durch den Umfangsregisterkorrekturwert ist eine Umfangsregisterkorrektur zwischen den einzelnen Druckwerken möglich, wobei nach dem Stand der Technik dieser Umfangsregisterkorrekturwert über den gesamten Lastmomentbereich der Druckmaschine konstant und damit statisch ist. Daher können zum Beispiel durch Geschwindigkeitsänderungen bzw. Drehzahländerungen verursachte Umfangsregisterabweichungen nicht ausgeglichen werden.The circumferential register correction value makes possible a circumferential register correction between the individual printing units, whereby in the prior art this circumferential register correction value is constant over the entire load moment range of the printing press and therefore static. Therefore, for example, circumferential register deviations caused by speed changes or speed changes can not be compensated.

Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde eine neuartige Druckmaschine sowie ein Verfahren zum Betreiben derselben zu schaffen.On this basis, the present invention is based on the problem to provide a novel printing press and a method for operating the same.

Dieses Problem wird durch eine Druckmaschine gemäß Anspruch 1 gelöst. Die Druckmaschine weist eine den Regeleinrichtungen der Formzylinder übergeordnete Registerregeleinrichtung auf, der als Eingangsgrößen die Lage-Istwerte der Gummizylinder jedes Druckwerks zuführbar sind, wobei die Registerregeleinrichtung im Fortdruckbetrieb den Umfangsregisterkorrekturwert jedes Druckwerks abhängig von dem Lage-Istwert des jeweiligen Gummizylinders dynamisch anpasst.This problem is solved by a printing machine according to claim 1. The printing press has a control device of the form cylinder superordinate register control device to which the actual position values of the blanket cylinders of each printing unit can be fed, the register control device in the continuous printing operation, the Umfangsregisterkorrekturwert each printing unit depending on the actual position of the respective blanket cylinder adapts dynamically.

Im Sinne der hier vorliegenden Erfindung passt eine den Regeleinrichtungen der Formzylinder übergeordnete Registerregeleinrichtung im Fortdruckbetrieb den Umfangsregisterkorrekturwert für jedes Druckwerk dynamisch an, wobei hierzu der Registerregeleinrichtung die Lage-Istwerte der Gummizylinder der Druckwerke zuführbar sind. Durch Änderungen des Lastmomentzustands der Druckmaschine, insbesondere durch Geschwindigkeitsänderungen bzw. Drehzahländerungen der Druckmaschine, verursachte Umfangsregisterabweichungen können mit der hier vorliegenden Erfindung ausgeglichen werden. Hierdurch kann über den gesamten Lastmomentbereich der Druckmaschine ein optimales Druckergebnis bereitgestellt werden. Gegebenenfalls kann auf Längswellen, die bei aus dem Stand der Technik bekannten Druckmaschinen zur Kompensation von Umfangsregisterabweichungen verwendet werden, verzichtet werden.For the purposes of the present invention, a register control device superimposed on the control devices of the forme cylinder dynamically adapts the circumferential register correction value for each printing unit in the continuous printing operation, for which purpose the position actual values of the blanket cylinders of the printing units can be fed to the register control device. Circumferential register deviations caused by changes in the load torque state of the printing press, in particular by speed changes or speed changes of the printing press, can be compensated for by the present invention. As a result, an optimum print result can be provided over the entire load torque range of the printing press. Optionally, on longitudinal shafts, which are used in known from the prior art printing machines to compensate for circumferential register deviations, be dispensed with.

Vorzugsweise sind in der Registerregeleinrichtung für jedes Druckwerk druckauftragspezifische Soll-Winkeldifferenzen zwischen dem Gummizylinder des jeweiligen Druckwerks und einem Gummizylinder eines Referenzdruckwerks hinterlegt, wobei die Registerregeleinrichtung dann, wenn im Fortdruckbetrieb auf Basis der Lage-Istwerte der Gummizylinder für mindestens ein Druckwerk eine Abweichung von der für dasselbe hinterlegten Soll-Winkeldifferenz festgestellt wird, den entsprechenden Umfangsregisterkorrekturwert um diese Abweichung dynamisch anpasst.Preferably, in the register control device for each printing unit job-specific desired angular differences between the blanket cylinder of the respective printing unit and a blanket cylinder of a reference printing stored, wherein the register control device, if in the continuous printing operation based on the actual position values of the blanket cylinder for at least one printing unit a deviation from the for the same stored desired angular difference is determined, the corresponding circumferential register correction value dynamically adjusted by this deviation.

Das erfindungemäße Verfahren zum Betreiben einer Druckmaschine ist im unabhängigen Anspruch 4 definiert.The erfindungemäße method for operating a printing press is defined in independent claim 4.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ein Ausführungsbeispiel der Erfindung wird, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1:
ein Blockschaltbild zur Verdeutlichung einer aus dem Stand der Technik bekannten Druckmaschine; und
Fig. 2:
ein Blockschaltbild zur Verdeutlichung einer erfindungsgemäßen Druckmaschine.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. An embodiment of the invention will be described, without being limited thereto, with reference to the drawing. Showing:
Fig. 1:
a block diagram for illustrating a known from the prior art printing machine; and
Fig. 2:
a block diagram for illustrating a printing machine according to the invention.

Bevor nachfolgend unter Bezugnahme auf Fig. 2 die hier vorliegende Erfindung in größerem Detail beschrieben wird, soll vorab unter Bezugnahme auf Fig. 1 das Prinzip einer vorbekannten Bogendruckmaschine mit eigenmotorisch angetriebenen Formzylindern und einer Umfangsregisterkorrektur beschrieben werden.Before referring to below Fig. 2 The present invention will be described in more detail with reference to FIG Fig. 1 the principle of a previously known sheet-fed printing machine with self-powered form cylinders and a circumferential register correction will be described.

Fig. 1 zeigt ein stark schematisiertes Blockschaltbild einer aus der Praxis bekannten Bogendruckmaschine im Bereich von vier Druckwerken 10, 11, 12 und 13, wobei jedes der Druckwerke einen Gegendruckzylinder 14, einen auf dem Gegendruckzylinder 14 abrollenden Gummizylinder 15 sowie einen auf dem Gummizylinder 15 abrollenden Formzylinder 16 umfasst. Die Formzylinder 16 werden auch als Plattenzylinder bezeichnet. Mit den Formzylindern 16 wirken in Fig. 1 nicht dargestellte Farbwerke sowie Feuchtwerke der Druckwerke 10 bis 13 zusammen. Zwischen den Gegendruckzylindern 14 benachbarter Druckwerke ist im gezeigten Ausführungsbeispiel jeweils ein Transferzylinder 17 positioniert, um in der Bogendruckmaschine zu bedruckende Druckbogen von einem Druckwerk in ein nachfolgendes Druckwerk zu transportieren. Die Gegendruckzylinder 14 der Druckwerke 10 bis 13 sowie die zwischen den Gegendruckzylindern 14 benachbarter Druckwerke positionierten Transferzylinder 17 dienen demnach dem Transport von zu bedruckenden Druckbogen durch die Bogendruckmaschine und werden daher auch als Bogenführungszylinder bezeichnet. Fig. 1 shows a highly schematic block diagram of a sheet-fed press known in practice in the range of four printing units 10, 11, 12 and 13, wherein each of the printing units comprises a counter-pressure cylinder 14, a rolling on the impression cylinder 14 blanket cylinder 15 and a rolling on the blanket cylinder 15 forme cylinder 16 , The form cylinder 16 are also referred to as a plate cylinder. With the form cylinders 16 act in Fig. 1 not shown inking units and dampening units of the printing units 10 to 13 together. Between the counter-pressure cylinders 14 of adjacent printing units, a transfer cylinder 17 is positioned in the illustrated embodiment, in order to transport printed sheets to be printed in the sheet-fed printing press from a printing unit to a subsequent printing unit. The counter-pressure cylinders 14 of the printing units 10 to 13 and the transfer cylinders 17 positioned between the impression cylinders 14 of adjacent printing units thus serve the transport of printed sheets to be printed by the sheet-fed printing press and are therefore also referred to as sheet-guiding cylinders.

Bei der in Fig. 1 schematisiert dargestellten Bogendruckmaschine werden zumindest die Gegendruckzylinder 14 und die Gummizylinder 15 eines jeden Druckwerks 10 bis 13 sowie die Transferzylinder 17 von einem nicht-dargestellten Hauptantrieb der Bogendruckmaschine angetrieben. Jedem Formzylinder 16 eines jeden Druckwerks 10 bis 13 ist hingegen ein ebenfalls nicht-dargestellter Einzelantrieb bzw. Direktantrieb zugeordnet, mit Hilfe derer die Formzylinder 16 entkoppelt vom Hauptantrieb der Bogendruckmaschine angetrieben werden können. Bei den Formzylindern 16 der Bogendruckmaschine handelt es sich demnach um eigenmotorisch angetriebene Formzylinder.At the in Fig. 1 Schematically illustrated sheet-fed printing machine, at least the impression cylinder 14 and the blanket cylinder 15 of each printing unit 10 to 13 and the transfer cylinder 17 are driven by a main drive of the sheet-fed printing press, not shown. Each forme cylinder 16 of each printing unit 10 to 13, however, a likewise not-shown single drive or direct drive is assigned by means of which the form cylinder 16 can be decoupled from the main drive of the sheet-fed press. The form cylinders 16 of the sheet-fed printing press are therefore self-powered form cylinders.

Die nicht dargestellten Farbwerke sowie die ebenfalls nicht dargestellten Feuchtwerke der Druckwerke 10 bis 13 werden entweder über den Hauptantrieb der Bogendruckmaschine oder über den jeweiligen, dem Formzylinder 16 des jeweiligen Druckwerks 10 bis 13 zugeordneten Einzelantrieb bzw. Direktantrieb angetrieben.The inking units, not shown, and also not shown dampening units of the printing units 10 to 13 are driven either via the main drive of the sheet-fed press or on the respective, the forme cylinder 16 of the respective printing unit 10 to 13 associated with individual drive or direct drive.

Im Fortdruckbetrieb der Bogendruckmaschine werden demnach zumindest die Gegendruckzylinder 14, die Gummizylinder 15 sowie die Transferzylinder 17 vom Hauptantrieb der Bogendruckmaschine angetrieben, die Formzylinder der Druckwerke werden hingegen vom jeweiligen Direktantrieb angetrieben, und zwar synchronisiert zum Hauptantrieb. Hierzu ist jedem der Formzylinder 16 der Druckwerke 10 bis 13 der Bogendruckmaschine neben dem nicht-dargestellten Direktantrieb eine Regeleinrichtung 18 zugeordnet, wobei jeder Regeleinrichtung 18 eines Druckwerks als Lage-Sollwert 19 für den jeweiligen Formzylinder 16 ein mit einem Umfangsregisterkorrekturwert 20 verrechneter Lage-Istwert 21 des Gummizylinders 15 des jeweiligen Druckwerks zuführbar ist. Auf Basis einer Regelabweichung 22 zwischen dem Lage-Sollwert 19 für den Formzylinder 16 eines Druckwerks und dem entsprechenden Lage-Istwert 23 des Formzylinders 16 generiert die Regeleinrichtung 18 des jeweiligen Formzylinders 16 ein Stellsignal 24 für den nicht-dargestellten Direktantrieb des jeweiligen Formzylinders 16.Accordingly, at least the counter-pressure cylinders 14, the rubber cylinders 15 and the transfer cylinders 17 are driven by the main drive of the sheet-fed printing press in the continuous printing operation of the sheet-fed printing press, whereas the forme cylinders of the printing units are driven by the respective direct drive, synchronized with the main drive. For this purpose, each of the forme cylinder 16 of the printing units 10 to 13 of the sheet-fed press is associated with a control device 18 in addition to the direct drive not shown, each control device 18 of a printing unit as a position setpoint 19 for the respective forme cylinder 16 with a peripheral register correction value 20 offset actual position value 21st the blanket cylinder 15 of the respective printing unit can be fed. On the basis of a control deviation 22 between the desired position 19 for the forme cylinder 16 of a printing unit and the corresponding actual position value 23 of the forme cylinder 16, the control device 18 of the respective forme cylinder 16 generates an actuating signal 24 for the direct drive of the respective forme cylinder 16, not shown.

Die Umfangsregisterkorrekturwerte 20 für jedes der Druckwerke 10 bis 13 der Bogendruckmaschine werden gemäß Fig. 1 von einer Steuerungseinrichtung 25 vorgegeben. Die Umfangsregisterkorrekturwerte 20 für jedes Druckwerk 10 bis 13 sind dabei nach dem Stand der Technik über den gesamten Lastmomentbereich der Bogendruckmaschine konstant und damit statisch. Durch Lastmomentänderungen verursachte Umfangsregisterabweichungen der Bogendruckmaschine können demnach mit der aus dem Stand der Technik gemäß Fig. 1 bekannten Bogendruckmaschine nicht kompensiert werden. Derartige Lastmomentänderungen können durch Geschwindigkeitsänderungen bzw. Drehzahländerungen, durch Temperaturänderungen oder sonstige das Lastmoment der Druckmaschine beeinflussende Ereignisse hervorgerufen werden.The circumferential register correction values 20 for each of the printing units 10 to 13 of the sheet-fed press are set as shown in FIG Fig. 1 predetermined by a control device 25. The circumferential register correction values 20 for each printing unit 10 to 13 are constant in the state of the art over the entire load moment range of the sheet-fed printing machine and thus static. Circumferential register deviations of the sheet-fed printing machine caused by changes in the load torque can therefore be compared with those of the prior art Fig. 1 known sheetfed press are not compensated. Such load torque changes can be caused by speed changes or speed changes, by temperature changes or other events affecting the load torque of the printing press.

Fig. 2 zeigt ein stark schematisiertes Blockschaltbild einer erfindungsgemäßen Bogendruckmaschine, wobei zur Vermeidung unnötiger Wiederholungen für gleiche Baugruppen gleiche Bezugsziffern verwendet werden. Fig. 2 shows a highly schematic block diagram of a sheet-fed press according to the invention, wherein the same reference numerals are used to avoid unnecessary repetition for the same modules.

Nachfolgend wird nur auf die Details eingegangen, durch die sich die erfindungsgemäße Bogendruckmaschine der Fig. 2 von der aus dem Stand der Technik bekannten Bogendruckmaschine gemäß Fig. 1 unterscheidet.In the following, only the details will be discussed, through which the sheet-fed printing machine according to the invention Fig. 2 from the known from the prior art sheet printing according to Fig. 1 different.

Die erfindungsgemäße Bogendruckmaschine verfügt über eine den Formzylindern 16 der Druckwerke 10 bis 13 zugeordneten Regeleinrichtungen 18 übergeordnete Registerregeleinrichtung 26. Der Registerregeleinrichtung 26 werden als Eingangsgrößen die Lage-Istwerte 21 der Gummizylinder 15 der Druckwerke 10 bis 13 zugeführt. Die Registerregeleinrichtung 26 passt auf Basis dieser Lage-Istwerte 21 der Gummizylinder 15 die zur Bestimmung der Lage-Sollwerte 19 für die Formzylinder 16 verwendeten Umfangsregisterkorrekturwerte 20 dynamisch an, um so durch Lastmomentänderungen der erfindungsgemäßen Bogendruckmaschine verursachte Umfangsregisterabweichungen auszugleichen. Lastmomentänderungen können durch Geschwindigkeitsänderungen bzw. Drehzahländerungen der Druckmaschine verursacht werden. Bei der erfindungsgemäßen Bogendruckmaschine handelt es sich bei den Umfangsregisterkorrekturwerten 20 demnach nicht um statische, über den gesamten Lastmomentbereich konstante Werte, sondern vielmehr um dynamische Werte, deren Größe bzw. Betrag abhängig von einer sich bei Lastmomentänderungen an der Druckmaschine verändernden Umfangsregisterabweichung ist.The sheet-fed printing machine according to the invention has a register control device 26 which is superordinate to the form cylinders 16 of the printing units 10 to 13. The register control device 26 is supplied with the position actual values 21 of the blanket cylinders 15 of the printing units 10 to 13 as input variables. The register control device 26 dynamically adjusts the circumferential register correction values 20 used to determine the position set values 19 for the forme cylinders 16 on the basis of these actual position values 21 of the blanket cylinders 15 so as to compensate for circumferential register deviations caused by load moment changes of the sheetfed press according to the present invention. Lastmomentänderungen can be caused by speed changes or speed changes of the printing press. Accordingly, in the sheet-fed printing machine according to the invention, the circumferential register correction values 20 are not static values that are constant over the entire load torque range, but rather dynamic values whose magnitude or magnitude is dependent on a circumferential register deviation that changes with load torque changes on the printing press.

In der Registerregeleinrichtung 26 ist für jedes Druckwerk 10 bis 13 eine Soll-Winkeldifferenz zwischen dem Gummizylinder 15 des jeweiligen Druckwerks und einem Gummizylinder eines Referenzdruckwerks hinterlegt. Als Referenzdruckwerk kann jedes beliebige Druckwerk der Bogendruckmaschine definiert werden. Dann, wenn die Registerregeleinrichtung 26 im Fortdruckbetrieb auf Basis der Lage-Istwerte 21 der Gummizylinder 15 für mindestens ein Druckwerk 10 bis 13 eine Abweichung von der für dasselbe hinterlegten Soll-Winkeldifferenz feststellt, passt dieselbe den Umfangsregisterkorrekturwert 20 für dieses Druckwerk um die festgestellte Abweichung dynamisch an. Hierdurch wird im Fortdruckbetrieb eine dynamische Sollwertanpassung für den Lage-Sollwert 19 des jeweiligen Formzylinders 16 des jeweiligen Druckwerks realisiert.In the register control device 26, a desired angular difference between the blanket cylinder 15 of the respective printing unit and a blanket cylinder of a reference printing unit is stored for each printing unit 10 to 13. As a reference printing unit, any printing unit of the sheet-fed press can be defined. Then, when the registration control device 26 determines a deviation from the desired angular difference stored for the same in the continuous printing operation on the basis of the actual position values 21 of the blanket cylinders 15 for at least one printing unit 10 to 13, it dynamically adjusts the circumferential registration correction value 20 for this printing unit by the determined deviation at. As a result, a dynamic setpoint adjustment for the position setpoint 19 of the respective forme cylinder 16 of the respective printing unit is realized in the continuous printing operation.

Bei den in der Registerregeleinrichtung 26 hinterlegten Soll-Winkeldifferenzen handelt es sich um druckauftragspezifische Soll-Winkeldifferenzen, die vor Ausführung eines Druckauftrags während Einrichtarbeiten ermittelt und dann in der Registerregeleinrichtung 26 hinterlegt bzw. gespeichert werden.The reference angular differences stored in the register control device 26 are print job-specific desired angular differences, which are determined before execution of a print job during setup work and then stored or stored in the register control device 26.

Bei der erfindungsgemäßen Bogendruckmaschine, deren Formzylinder 16 eigenmotorisch angetrieben werden, können mit Hilfe der Registerregeleinrichtung 26 durch Lastmomentänderungen, wie zum Beispiel durch Drehzahländerungen bzw. Geschwindigkeitsänderungen, hervorgerufene Umfangsregisterabweichungen im Druckbild kompensiert werden, wobei hierzu die Registerregeleinrichtung 26 eine Sollwertkorrektur für die Lage-Sollwerte 19 der eigenmotorisch angetriebenen Formzylinder 16 auf Grundlage von Lage-Istwerten 21 der entsprechenden Gummizylinder 15 vornimmt. Sogenannte Hochlaufpasseränderungen an Bogendruckmaschinen können mit der hier vorliegenden Erfindung sicher vermieden werden, und zwar auch dann, wenn die Bogendruckmaschinen keine Längswellen aufweisen.In the sheet-fed printing machine according to the invention, the forme cylinder 16 are driven by self-motor, can be compensated by load torque changes, such as changes in speed or speed changes, caused circumferential register deviations in the printed image, for which purpose the register controller 26 is a setpoint correction for the position setpoint 19th the self-powered form cylinder 16 based on actual position values 21 of the corresponding blanket cylinder 15 makes. So-called start-up register changes to sheet-fed printing presses can be safely avoided with the present invention, even if the sheet-fed presses have no longitudinal shafts.

Bezugszeichenliste

10
Druckwerk
11
Druckwerk
12
Druckwerk
13
Druckwerk
14
Gegendruckzylinder
15
Gummizylinder
16
Formzylinder
17
Transferzylinder
18
Regeleinrichtung
19
Lage-Sollwert
20
Umfangsregisterkorrekturwert
21
Lage-Istwert
22
Regelabweichung
23
Lage-Istwert
24
Stellsignal
25
Steuerungseinrichtung
26
Registerregeleinrichtung
LIST OF REFERENCE NUMBERS
10
printing unit
11
printing unit
12
printing unit
13
printing unit
14
Impression cylinder
15
rubber cylinder
16
form cylinder
17
transfer cylinder
18
control device
19
Position setpoint
20
Circumferential register correction value
21
Position value
22
deviation
23
Position value
24
actuating signal
25
control device
26
Register control device

Claims (7)

  1. A printing machine, more preferably sheet-fed printing machine, with a plurality of printing couples (10, 11, 12, 13), wherein each printing couple (10 - 13) comprises an impression cylinder (14), a blanket cylinder (15) rolling off the impression cylinder (14), a form cylinder (16) rolling off the blanket cylinder (15) an inking system and preferentially a dampening system, wherein at least the impression cylinder (14) and the blanket cylinder (15) of each printing couple (10 - 13) can be driven by a main drive of the printing machine, wherein the form cylinder (16) of each printing couple (10 - 13) for the self-motorized drive of the latter is assigned a direct drive and a regulating device (18), which drives the form cylinder (16) in continuous printing mode synchronously with the blanket cylinder (15) of the respective printing couple (10 - 13) in such a manner, that the regulating device (18) of each form cylinder (16) can be supplied with a position actual value (21) offset by a circumferential register correction value (20) of the respective blanket cylinder (15) as position set value, characterized by a register regulating device (26) overriding the regulating devices (18) of the form cylinders (16), which as input quantities can be supplied with the position actual values (21) of the blanket cylinders (15) of each printing couple (10 - 13), wherein the register regulating device (26) dynamically adjusts the circumferential register correction value (20) of each printing couple (10 - 13) dependent on the position actual value (21) of the respective blanket cylinder (15), in order to thus offset circumferential register deviations caused through load moment changes.
  2. The printing machine according to Claim 1, characterized in that in the register regulating device (26) for each printing couple (10 - 13) print order-specific set angle differences between the blanket cylinder (15) of the respective printing couple (10 - 13) and a blanket cylinder (15) of a reference printing couple are stored and in that the register regulating device (26), when in continuous printing mode based on the position actual values (21) of the blanket cylinders (15) for at least one printing couple (10 - 13) a deviation from the set angle difference stored for said printing couple is determined, dynamically adjusts the corresponding circumferential register correction value (20) by that deviation.
  3. The printing machine according to Claim 1 or 2, characterized in that the register regulating device (26) through the dynamic adjustment of the circumferential register correction value (20) of a printing couple (10 - 13) performs a dynamic set value adjustment for the position set value (19) of the respective form cylinder (16).
  4. A method for operating a printing machine, more preferably a sheet-fed printing machine, wherein the printing machine comprises a plurality of printing couples (10 - 13) each with an impression cylinder (14), a blanket cylinder (15) rolling off the impression cylinder (14), a form cylinder (16) rolling off the blanket cylinder (15), an inking system and preferentially a dampening system, wherein at least the impression cylinder (14) and the blanket cylinder (15) of each printing couple (10 - 13) are driven by a main drive of the printing machine, wherein the form cylinder (16) of each printing couple (10 - 13) via a direct drive with regulating device (18) in continuous printing mode assigned to said printing couple is driven in a self-motorized manner and synchronously with the blanket cylinder (5) of the respective printing couple (10 - 13) in such a manner that the regulating device (18) of each form cylinder (16) as position set value is supplied with a position actual value of the respective blanket cylinder (15) offset by a circumferential register correction value, characterized in that a register regulating device (26) as input quantities is supplied with the position actual values of the blanket cylinders (15) of each printing couple (10 - 13), wherein the register regulating device (26) in continuous printing mode dynamically adjusts the circumferential register correction value of each printing couple (10 - 13) dependent on the position actual value of the respective blanket cylinder (15), in order to thus offset circumferential register deviations caused through load moment changes.
  5. The method according to Claim 4, characterized in that in the register regulating device for each printing couple (10 - 13) print order-specific set angle differences between the blanket cylinder (15) of the respective printing couple (10 - 13) and a blanket cylinder (15) of a reference printing couple are stored and in that when in continuous printing mode based on the position actual values of the blanket cylinders (15) for at least one printing couple (10 - 13) a deviation from the set angle difference stored for said printing couple is determined, the corresponding circumferential register correction value is dynamically adjusted by that deviation.
  6. The method according to Claim 5, characterized in that the print order-specific set angle differences are determined during setting operations before executing a print order and stored in the register regulating device (26).
  7. The method according to any one or several of the Claims 4 to 6, characterized in that through the dynamic adjustment of the circumferential register correction value of a printing couple (10 - 13) a dynamic set value adjustment for the position set value of the respective form cylinder (16) is performed.
EP06021692A 2005-11-08 2006-10-17 Printing machine and its method of operating Active EP1792728B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005053162A DE102005053162A1 (en) 2005-11-08 2005-11-08 Printing machine e.g. sheet-fed printing press has register regulating device whereby position-actual values of rubber cylinder are supplied to register regulating device, which can be adjusted dynamically

Publications (3)

Publication Number Publication Date
EP1792728A2 EP1792728A2 (en) 2007-06-06
EP1792728A3 EP1792728A3 (en) 2008-01-16
EP1792728B1 true EP1792728B1 (en) 2010-09-01

Family

ID=37949674

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Application Number Title Priority Date Filing Date
EP06021692A Active EP1792728B1 (en) 2005-11-08 2006-10-17 Printing machine and its method of operating

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EP (1) EP1792728B1 (en)
JP (1) JP2007131000A (en)
CN (1) CN1982059B (en)
AT (1) ATE479544T1 (en)
DE (2) DE102005053162A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011118904A1 (en) * 2010-12-20 2012-06-21 Heidelberger Druckmaschinen Ag Production plant with single drive
CN103832068A (en) * 2012-11-21 2014-06-04 广东东方精工科技股份有限公司 Method for carrying out real-time correction and compensation on printing length of carton printing machine
CN109955607B (en) * 2017-12-14 2020-11-17 海德堡印刷机械股份公司 Method for automatically calibrating a printing press having an image detection system by means of a computer
CN110293777B (en) * 2018-03-22 2021-04-09 海德堡印刷机械股份公司 Method for compensating for disturbance torques in a printing cylinder

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8810658U1 (en) * 1988-08-23 1989-02-02 Mascher, Peter, 2863 Ritterhude, De
DE19504585C2 (en) * 1995-02-11 1997-05-07 Roland Man Druckmasch Control for a cylinder position of a printing machine
US6293194B1 (en) * 1996-05-07 2001-09-25 Heidelberg Harris Inc. Method and apparatus for adjusting the circumferential register in a web-fed rotary printing press having a plate cylinder with a sleeve-shaped printing plate
DE19623224C1 (en) 1996-06-11 1997-09-11 Roland Man Druckmasch Offset printing machine operating drive
DE10115546A1 (en) * 2000-04-10 2001-10-11 Roland Man Druckmasch Operating printing machine, especially sheet offset machine, involves setting position of individual drive depending on difference resulting from angular settings measured at two points
DE10246072B4 (en) * 2001-10-31 2009-02-12 Heidelberger Druckmaschinen Ag Rotary printing process for multi-color printing
DE10327423B4 (en) * 2002-07-12 2008-07-17 Heidelberger Druckmaschinen Ag Drive for a rotary printing machine
CN1201930C (en) * 2002-11-29 2005-05-18 杜建刚 Positioning print device and positioning print method
DE10319770A1 (en) * 2003-05-02 2004-12-09 Koenig & Bauer Ag Method for regulating the color density of a color applied by a printing press to a printing medium and device for regulating various parameters relevant for the printing process of a printing press
DE102004009861B4 (en) * 2004-03-01 2007-09-20 Koenig & Bauer Aktiengesellschaft Method and device for the operation of printing units
DE102005018528C5 (en) * 2004-05-05 2019-03-14 manroland sheetfed GmbH Position transmitter for a direct drive of a cylinder in a processing machine

Also Published As

Publication number Publication date
JP2007131000A (en) 2007-05-31
DE102005053162A1 (en) 2007-05-10
EP1792728A2 (en) 2007-06-06
CN1982059A (en) 2007-06-20
CN1982059B (en) 2011-06-08
ATE479544T1 (en) 2010-09-15
EP1792728A3 (en) 2008-01-16
DE502006007765D1 (en) 2010-10-14

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