EP3424711B1 - Control equipment and method for operating a printing press - Google Patents

Control equipment and method for operating a printing press Download PDF

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Publication number
EP3424711B1
EP3424711B1 EP18176200.6A EP18176200A EP3424711B1 EP 3424711 B1 EP3424711 B1 EP 3424711B1 EP 18176200 A EP18176200 A EP 18176200A EP 3424711 B1 EP3424711 B1 EP 3424711B1
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EP
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Prior art keywords
printing press
printing
estimated
predicted
setting parameter
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EP18176200.6A
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German (de)
French (fr)
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EP3424711A1 (en
Inventor
Florian Fejfar
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Manroland Goss Web Systems GmbH
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Manroland Goss Web Systems GmbH
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Publication of EP3424711A1 publication Critical patent/EP3424711A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0009—Central control units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/10—Tripping devices or stop-motions for starting or stopping operation of damping or inking units

Definitions

  • the invention relates to a method and a control device for operating a printing press.
  • a printing press has several printing units in which a printing material is printed.
  • the printing units have an inking unit and a dampening unit, the inking unit being used to provide printing ink and the dampening unit being used to provide a dampening solution for printing on the printing material in the respective printing unit.
  • the parameters relating to the printing process technology and printing quality include, in particular, parameters dependent on the subject and thus dependent on the print image, parameters relating to the type of printing material to be printed, parameters relating to the type of printing ink used, parameters relating to the type of dampening solution used and the like.
  • the setting parameters of the printing press are determined, for example, for the inking unit of a printing unit, depending on such parameters relating to the printing process technology and printing quality, for example settings for ink zone control elements such as for the ink slider or ink knife of the respective inking unit.
  • a dampening solution quantity of a dampening solution guide is determined as a setting parameter for the dampening unit of a respective printing unit on the basis of the above parameters relating to printing process technology and printing quality.
  • DE 10 2009 001 302 A1 relates to a method for determining a run-up curve dependent on the printing press speed for an inking unit of a printing unit of the printing press. After defining relevant process parameters and selecting a predefined initial run-up curve, the printing press is operated on the one hand at set-up speed and on the other hand at press speeds that deviate from the set-up speed. Print copies that were printed at a press speed that deviates from the set-up speed are measured in order to adapt and save a ramp-up curve depending on this.
  • EP 1 466 734 A2 relates to a controller for a printing press, data records for setting values of print jobs already executed being stored in a memory of the controller. Values of a current print job can be compared with values of previously executed print jobs in order to modify setting values from them.
  • the object of the present invention is to create a novel method and a control device for operating a printing press, with which the print quality can be increased without the need for further sensors.
  • At least one setting parameter for the printing press is estimated or predicted depending on past operation of the printing press.
  • the respective setting parameter for the printing press is derived indirectly from at least one other, estimated or forecast printing press parameter.
  • the present invention proposes to estimate or predict setting parameters depending on past operation of the printing press.
  • the invention particularly estimates or predicts at least one printing process parameter, which is preferably dependent on the printing press temperature.
  • the respective setting parameter is estimated or forecast depending on a past operating time of the printing press and / or depending on a past operating speed of the printing press and / or depending on a past idle time of the printing press and / or depending on an ambient temperature of the printing press.
  • the respective setting parameter which depends in particular on the printing press temperature, can be estimated or forecasted particularly advantageously if this is based on or depending on the past operating time of the printing press, depending on the past operating speed of the printing press, depending on the past
  • the printing machine is idle and depends on the ambient temperature of the printing machine.
  • the operating time and downtime, the operating speed during the operating time and the ambient temperature of the printing press largely determine the printing press temperature, so that when the respective setting parameter is determined in this way, the print quality can advantageously be increased.
  • the respective setting parameter for the printing press is preferably derived from an estimated or predicted printing press temperature or from an estimated or predicted printing press component temperature.
  • the amount of dampening solution in the dampening solution guide is increased in particular.
  • the amount of dampening solution in the dampening solution guide is reduced in particular.
  • the print quality can hereby be increased particularly advantageously.
  • the respective setting parameter is estimated or predicted on the basis of an empirically determined map or an empirically determined table. This also serves to advantageously increase the print quality.
  • the empirically determined characteristic diagram or the empirically determined table is preferably determined in a test run on the printing press to be operated or on a printing press of the same type.
  • the estimate or prognosis of the respective setting parameter is preferably adapted dynamically during operation. This also serves to advantageously increase the print quality.
  • control device according to the invention is defined in claim 12.
  • the invention relates to a method and control device for operating a printing press.
  • a printing press comprises a plurality of printing units, through which a printing material to be printed is conveyed or moved through for printing on the same.
  • Each printing unit of a printing press has an inking unit and a dampening unit. Printing ink is kept ready in the inking unit and dampening solution is kept ready in the dampening unit in order to print on the printing material.
  • the setting parameters of the printing press include, for example, the position of ink zone control elements such as ink slides and ink knives of the inking unit, as well as the amount of dampening solution in the dampening system of a dampening unit.
  • These setting parameters are determined as a function of several printing process-related and print quality-relevant parameters, with these printing process-related and printing quality-related parameters in particular subject data or print image data of the print image to be printed, data about the printing material to be printed, data about the type of printing ink used, and data about the type of the used Fountain solution, data on the type of printing plate used and the like.
  • the estimated or predicted setting parameter depends in particular on an estimated or predicted printing press temperature or an estimated or predicted printing press component temperature, such as a surface temperature of a forme cylinder of a printing unit of the printing press.
  • the setting parameter is therefore not determined by a measurement during the printing operation, but rather is estimated or predicted according to the invention during the printing operation. It is thus possible to carry out the method according to the invention without hardware modification or retrofitting, even on printing machines used in the field.
  • the setting parameter is preferably estimated or predicted as a function of the past operating time of the printing press, depending on the past operating speed of the printing press, depending on the past downtime of the printing press and depending on the ambient temperature of the printing press.
  • the duration of the operating phases, the printing speed in these operating phases, the duration of the standstill phase and the ambient temperatures prevailing in each case largely determine the heating up and cooling down of the printing press and accordingly the printing press temperature or the respective printing press component temperature.
  • the printing press temperature or the respective printing press component temperature can accordingly be estimated or predicted in order to then determine the setting parameters, preferably the amount of dampening solution of the dampening solution guide.
  • the amount of dampening solution of the dampening solution guide is increased. If, on the other hand, a falling printing press temperature or printing press component temperature is estimated or predicted, the amount of dampening solution of the dampening solution guide is reduced. In this way, the print quality can be increased with simple means.
  • At least one setting parameter is estimated or predicted, depending on the past operation of the printing press, i.e. the history of the printing press operation, depending on the service life, the running time, the operating speed and the ambient temperature of the printing press.
  • empirically determined characteristic diagrams or characteristic curves or empirically determined tables are stored or stored on the control side in order to estimate the setting parameter, in particular the amount of dampening solution, on the basis of the past operating time, the operating speed, the past idle time and the ambient temperature.
  • the respective empirically determined characteristic diagram or the empirically determined characteristic curve or the empirically determined table is preferably determined in a test operation, specifically on the printing press to be operated or on a printing press of the same type to be operated. This allows a particularly advantageous prognosis of the or each setting parameter, which is dependent on the printing press temperature, in particular a particularly advantageous determination of the amount of dampening solution.
  • the printing press temperature can be measured depending on operating times, downtimes, printing speeds and ambient temperatures in order to store corresponding reference points in a characteristic diagram or a characteristic curve or a table .
  • these reference points can then be accessed and interpolated between them, for example.
  • the printing press temperature in test mode, but rather a measurement value that is dependent on the printing press temperature, for example a surface area that is developing.
  • the area coverage is dependent on the printing press temperature and can also be used to generate an empirically determined map or an empirically determined one To provide a characteristic curve or an empirically determined table, which is then accessed when the method according to the invention is carried out.
  • the method is carried out fully automatically by a control device of the printing press.
  • the invention relates not only to the method for operating the printing press, but also to the control device which executes the method described above fully automatically on the control side.
  • the control device accordingly estimates or predicts at least one setting parameter for the printing press, in particular a dampening solution quantity of the dampening solution guide as a function of past operation of the printing press.
  • a dampening solution quantity of the dampening solution guide as a function of past operation of the printing press.
  • the estimation or forecasting of the respective setting parameter is preferably adapted dynamically during operation.
  • the invention can be used without retrofitting on printing machines used in the field. Operating times, downtimes, printing speeds are available to the control device as data. Depending on this data, the control device can automatically determine the amount of dampening solution depending on the estimated or predicted printing press temperature in the manner described above.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

Die Erfindung betrifft ein Verfahren und eine Steuerungseinrichtung zum Betreiben einer Druckmaschine.The invention relates to a method and a control device for operating a printing press.

Eine Druckmaschine verfügt über mehrere Druckwerke, in welchen ein Bedruckstoff bedruckt wird. Die Druckwerke verfügen über ein Farbwerk sowie über ein Feuchtwerk, wobei das Farbwerk der Bereitstellung von Druckfarbe und das Feuchtwerk der Bereitstellung eines Feuchtmittels für das Bedrucken des Bedruckstoffs im jeweiligen Druckwerk dient.A printing press has several printing units in which a printing material is printed. The printing units have an inking unit and a dampening unit, the inking unit being used to provide printing ink and the dampening unit being used to provide a dampening solution for printing on the printing material in the respective printing unit.

Aus der Praxis ist es bekannt, dass für das Bedrucken eines Bedruckstoffs insbesondere abhängig von mehreren druckprozesstechnischen und druckqualitätsrelevanten Parametern mehrere Einstellparameter für die Druckmaschine bestimmt werden, auf Basis derer dann die Druckmaschine zum Bedrucken des Bedruckstoffs betrieben wird. Zu den druckprozesstechnischen und druckqualitätsrelevanten Parametern zählen insbesondere sujetabhängige und damit druckbildabhängige Parameter, Parameter über den Typ des zu bedruckenden Bedruckstoffs, Parameter über den Typ der verwendeten Druckfarbe, Parameter über den Typ des verwendeten Feuchtmittels und dergleichen. Als Einstellparameter der Druckmaschine werden zum Beispiel für das Farbwerk eines Druckwerks abhängig von solchen druckprozesstechnischen und druckqualitätsrelevanten Parametern zum Beispiel Einstellungen für Farbzonenstellelemente wie für Farbschieber bzw. Farbmesser des jeweiligen Farbwerks ermittelt. Als Einstellparameter für das Feuchtwerk eines jeweiligen Druckwerks wird auf Basis der obigen druckprozesstechnischen und druckqualitätsrelevanten Parameter eine Feuchtmittelmenge einer Feuchtmittelführung ermittelt.It is known from practice that for the printing of a printing material, in particular depending on several printing process-related and printing quality-relevant parameters, several setting parameters for the printing machine are determined, on the basis of which the printing machine is then operated for printing on the printing material. The parameters relating to the printing process technology and printing quality include, in particular, parameters dependent on the subject and thus dependent on the print image, parameters relating to the type of printing material to be printed, parameters relating to the type of printing ink used, parameters relating to the type of dampening solution used and the like. The setting parameters of the printing press are determined, for example, for the inking unit of a printing unit, depending on such parameters relating to the printing process technology and printing quality, for example settings for ink zone control elements such as for the ink slider or ink knife of the respective inking unit. A dampening solution quantity of a dampening solution guide is determined as a setting parameter for the dampening unit of a respective printing unit on the basis of the above parameters relating to printing process technology and printing quality.

DE 10 2009 001 302 A1 betrifft ein Verfahren zum Ermitteln einer druckmaschinengeschwindigkeitsabhängigen Hochlaufkurve für ein Farbwerk eines Druckwerks der Druckmaschine. Nach dem Festlegen relevanter Prozessparameter und dem Auswählen einer vordefinierten Ausgangshochlaufkurve wird die Druckmaschine einerseits bei Einrichtgeschwindigkeit und andererseits bei von der Einrichtgeschwindigkeit abweichenden Druckmaschinengeschwindigkeiten betrieben. Druckexemplare, die bei von der Einrichtgeschwindigkeit abweichender Druckmaschinengeschwindigkeit gedruckt wurden, werden vermessen, um abhängig hiervon eine Hochlaufkurve anzupassen und zu speichern. DE 10 2009 001 302 A1 relates to a method for determining a run-up curve dependent on the printing press speed for an inking unit of a printing unit of the printing press. After defining relevant process parameters and selecting a predefined initial run-up curve, the printing press is operated on the one hand at set-up speed and on the other hand at press speeds that deviate from the set-up speed. Print copies that were printed at a press speed that deviates from the set-up speed are measured in order to adapt and save a ramp-up curve depending on this.

EP 1 466 734 A2 betrifft eine Steuerung für eine Druckmaschine, wobei in einem Speicher der Steuerung Datensätze für Einstellwerte bereits ausgeführter Druckaufträge abgelegt sind. Werte eines aktuellen Druckauftrags sind mit Werten bereits ausgeführter Druckaufträge vergleichbar, um hieraus Einstellwerte zu modifizieren. EP 1 466 734 A2 relates to a controller for a printing press, data records for setting values of print jobs already executed being stored in a memory of the controller. Values of a current print job can be compared with values of previously executed print jobs in order to modify setting values from them.

DE 10 2014 005 289 A1 betrifft eine Farbregelung. DE 10 2014 005 289 A1 concerns a color control.

Es besteht Bedarf daran, die Druckqualität zunehmend zu verbessern, und zwar durch Bereitstellung besserer Einstellparameter für die Druckmaschine. Dies soll möglichst ohne hardwareseitige Nachrüstung bzw. ohne hardwareseitigen Umbau der Druckmaschine erfolgen.There is a need to increasingly improve print quality by providing better press setup parameters. This should be done as far as possible without hardware retrofitting or without hardware conversion of the printing press.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein neuartiges Verfahren und eine Steuerungseinrichtung zum Betreiben einer Druckmaschine zu schaffen, mit welchem die Druckqualität ohne die Notwendigkeit weiterer Sensoren erhöht werden kann.Proceeding from this, the object of the present invention is to create a novel method and a control device for operating a printing press, with which the print quality can be increased without the need for further sensors.

Diese Aufgabe wird durch ein Verfahren zum Betreiben einer Druckmaschine gemäß Anspruch 1 gelöst. Mindestens ein Einstellparameter für die Druckmaschine wird abhängig von einem zurückliegenden Betrieb der Druckmaschine geschätzt oder prognostiziert. Erfindungsgemäß wird der jeweilige Einstellparameter für die Druckmaschine indirekt aus mindestens einem anderen, geschätzten oder prognostizierten Druckmaschinenparameter abgeleitet.This object is achieved by a method for operating a printing press according to claim 1. At least one setting parameter for the printing press is estimated or predicted depending on past operation of the printing press. According to the invention, the respective setting parameter for the printing press is derived indirectly from at least one other, estimated or forecast printing press parameter.

Mit der hier vorliegenden Erfindung wird vorgeschlagen, Einstellparameter abhängig von einem zurückliegenden Betrieb der Druckmaschine zu schätzen oder zu prognostizieren. Die Erfindung schätzt bzw. prognostiziert insbesondere mindestens einen druckprozesstechnischen Parameter, welcher vorzugsweise von der Druckmaschinentemperatur abhängig ist. Hierdurch kann ohne die Notwendigkeit zusätzlicher Sensorik und demnach ohne die Notwendigkeit eines hardwareseitigen Umbaus bzw. einer hardwareseitigen Nachrüstung an einer Druckmaschine die Druckqualität verbessert werden.The present invention proposes to estimate or predict setting parameters depending on past operation of the printing press. The invention particularly estimates or predicts at least one printing process parameter, which is preferably dependent on the printing press temperature. As a result, the print quality can be improved without the need for additional sensors and therefore without the need for hardware-related conversion or hardware-related retrofitting on a printing press.

Nach einer vorteilhaften Weiterbildung der Erfindung wird der jeweilige Einstellparameter abhängig von einer zurückliegenden Betriebsdauer der Druckmaschine und/oder abhängig von zurückliegenden Betriebsgeschwindigkeit der Druckmaschine und/oder abhängig von zurückliegenden Stillstanddauer der Druckmaschine und/oder abhängig von einer Umgebungstemperatur der Druckmaschine geschätzt oder prognostiziert.According to an advantageous development of the invention, the respective setting parameter is estimated or forecast depending on a past operating time of the printing press and / or depending on a past operating speed of the printing press and / or depending on a past idle time of the printing press and / or depending on an ambient temperature of the printing press.

Das Abschätzen bzw. Prognostizieren des jeweiligen Einstellparameters, welcher insbesondere von der Druckmaschinentemperatur abhängig ist, kann besonders vorteilhaft dann erfolgen, wenn dies auf Basis bzw. abhängig von der zurückliegenden Betriebsdauer der Druckmaschine, abhängig von der zurückliegenden Betriebsgeschwindigkeit der Druckmaschine, abhängig von der zurückliegenden Stillstanddauer der Druckmaschine und abhängig von der Umgebungstemperatur der Druckmaschine erfolgt. Die Betriebsdauer und Stillstanddauer, die Betriebsgeschwindigkeit während der Betriebsdauer sowie die Umgebungstemperatur der Druckmaschine bestimmen maßgeblich die Druckmaschinentemperatur, sodass dann, wenn der jeweilige Einstellparameter auf diese Art und Weise ermittelt wird, die Druckqualität vorteilhaft gesteigert werden kann.The respective setting parameter, which depends in particular on the printing press temperature, can be estimated or forecasted particularly advantageously if this is based on or depending on the past operating time of the printing press, depending on the past operating speed of the printing press, depending on the past The printing machine is idle and depends on the ambient temperature of the printing machine. The operating time and downtime, the operating speed during the operating time and the ambient temperature of the printing press largely determine the printing press temperature, so that when the respective setting parameter is determined in this way, the print quality can advantageously be increased.

Vorzugsweise wird der jeweilige Einstellparameter für die Druckmaschine aus einer geschätzten oder prognostizierten Druckmaschinentemperatur oder aus einer geschätzten oder prognostizierten Druckmaschinenbauteiltemperatur abgeleitet.The respective setting parameter for the printing press is preferably derived from an estimated or predicted printing press temperature or from an estimated or predicted printing press component temperature.

Dann, wenn eine steigende Druckmaschinentemperatur oder Druckmaschinenbauteiltemperatur geschätzt oder prognostiziert wird, wird insbesondere eine die Feuchtmittelmenge der Feuchtmittelführung erhöht.If an increasing printing press temperature or printing press component temperature is estimated or predicted, the amount of dampening solution in the dampening solution guide is increased in particular.

Dann hingegen, wenn eine fallende Druckmaschinentemperatur oder Druckmaschinenbauteiltemperatur geschätzt oder prognostiziert wird, wird insbesondere die Feuchtmittelmenge der Feuchtmittelführung reduziert. Hiermit kann die Druckqualität besonders vorteilhaft gesteigert werden.On the other hand, when a falling printing press temperature or printing press component temperature is estimated or predicted, the amount of dampening solution in the dampening solution guide is reduced in particular. The print quality can hereby be increased particularly advantageously.

Nach einer weiteren vorteilhaften Weiterbildung der Erfindung wird der jeweilige Einstellparameter auf Grundlage eines empirisch ermittelten Kennfelds oder einer empirisch ermittelten Tabelle geschätzt oder prognostiziert. Auch dies dient der vorteilhaften Steigerung der Druckqualität.According to a further advantageous development of the invention, the respective setting parameter is estimated or predicted on the basis of an empirically determined map or an empirically determined table. This also serves to advantageously increase the print quality.

Das empirisch ermittelte Kennfeld oder die empirisch ermittelte Tabelle wird dabei in einem Testlauf vorzugsweise an der zu betreibenden Druckmaschine oder an einer typgleichen Druckmaschine ermittelt.The empirically determined characteristic diagram or the empirically determined table is preferably determined in a test run on the printing press to be operated or on a printing press of the same type.

Vorzugsweise wird die Schätzung oder Prognostizierung des jeweiligen Einstellparameters während des Betriebs dynamisch angepasst. Auch dies dient der vorteilhaften Steigerung der Druckqualität.The estimate or prognosis of the respective setting parameter is preferably adapted dynamically during operation. This also serves to advantageously increase the print quality.

Die erfindungsgemäße Steuerungseinrichtung ist in Patentanspruch 12 definiert.The control device according to the invention is defined in claim 12.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung.Preferred developments of the invention result from the subclaims and the following description.

Die Erfindung betrifft ein Verfahren und Steuerungseinrichtung zum Betreiben einer Druckmaschine.The invention relates to a method and control device for operating a printing press.

Der grundsätzliche Aufbau einer Druckmaschine ist dem hier angesprochenen Fachmann geläufig.The basic structure of a printing press is familiar to the expert addressed here.

Es sei an dieser Stelle darauf hingewiesen, dass eine Druckmaschine mehrere Druckwerke umfasst, durch die ein zu bedruckender Bedruckstoff zum Bedrucken desselben hindurchgefördert bzw. hindurchbewegt wird. Jedes Druckwerk einer Druckmaschine verfügt über ein Farbwerk und ein Feuchtwerk. Im Farbwerk wird Druckfarbe bereitgehalten und im Feuchtwerk wird Feuchtmittel bereitgehalten, um den Bedruckstoff zu bedrucken.It should be pointed out at this point that a printing press comprises a plurality of printing units, through which a printing material to be printed is conveyed or moved through for printing on the same. Each printing unit of a printing press has an inking unit and a dampening unit. Printing ink is kept ready in the inking unit and dampening solution is kept ready in the dampening unit in order to print on the printing material.

Für den Betrieb der Druckmaschine werden mehrere Einstellparameter für die Druckmaschine, insbesondere für das Farbwerk und das Feuchtwerk eines jeden Druckwerks der Druckmaschine bestimmt, auf Basis derer dann die Druckmaschine zum Bedrucken des Bedruckstoffs betrieben wird.For the operation of the printing machine, several setting parameters for the printing machine, in particular for the inking unit and the dampening unit of each printing unit of the printing machine, are determined, on the basis of which the printing machine is then operated for printing on the printing material.

Zu den Einstellparametern der Druckmaschine gehören zum Beispiel die Stellung von Farbzonenstellelementen wie Farbschiebern und Farbmessern des Farbwerks sowie die Feuchtmittelmenge der Feuchtmittelführung eines Feuchtwerks.The setting parameters of the printing press include, for example, the position of ink zone control elements such as ink slides and ink knives of the inking unit, as well as the amount of dampening solution in the dampening system of a dampening unit.

Diese Einstellparameter werden abhängig von mehreren druckprozesstechnischen und druckqualitätsrelevanten Parametern bestimmt, wobei zu diesen druckprozesstechnischen und druckqualitätsrelevanten Parametern insbesondere Sujetdaten bzw. Druckbilddaten des zu druckenden Druckbilds, Daten über den zu bedruckenden Bedruckstoff, Daten über den Typ der verwendeten Druckfarbe, Daten über den Typ des verwendeten Feuchtmittels, Daten über den Typ der verwendeten Druckplatte und dergleichen gehören.These setting parameters are determined as a function of several printing process-related and print quality-relevant parameters, with these printing process-related and printing quality-related parameters in particular subject data or print image data of the print image to be printed, data about the printing material to be printed, data about the type of printing ink used, and data about the type of the used Fountain solution, data on the type of printing plate used and the like.

Es liegt im Sinne der Erfindung, mindestens einen Einstellparameter für die Druckmaschine, insbesondere für das Feuchtwerk eines Druckwerks die Feuchtmittelmenge der Feuchtmittelführung, abhängig von einem zurückliegenden Betrieb der Druckmaschine zu schätzen oder zu prognostizieren. Der geschätzte oder prognostizierte Einstellparameter ist insbesondere von einer geschätzten oder prognostizierten Druckmaschinentemperatur oder einer geschätzten oder prognostizierten Druckmaschinenbauteiltemperatur, wie einer Oberflächentemperatur eines Formzylinders eines Druckwerks der Druckmaschine, abhängig.It is within the scope of the invention to estimate or forecast at least one setting parameter for the printing press, in particular for the dampening unit of a printing unit, the amount of dampening solution of the dampening solution guide, depending on past operation of the printing press. The estimated or predicted setting parameter depends in particular on an estimated or predicted printing press temperature or an estimated or predicted printing press component temperature, such as a surface temperature of a forme cylinder of a printing unit of the printing press.

Der Einstellparameter wird demnach nicht während des Druckbetriebs durch eine Messung bestimmt, sondern vielmehr erfindungsgemäß während des Druckbetriebs abgeschätzt bzw. prognostiziert. So ist es möglich, das erfindungsgemäße Verfahren ohne hardwareseitigen Umbau bzw. ohne hardwareseitige Nachrüstung auszuführen, und zwar bereits auch an im Feld genutzten Druckmaschinen.The setting parameter is therefore not determined by a measurement during the printing operation, but rather is estimated or predicted according to the invention during the printing operation. It is thus possible to carry out the method according to the invention without hardware modification or retrofitting, even on printing machines used in the field.

Vorzugsweise wird der Einstellparameter abhängig von der zurückliegenden Betriebsdauer der Druckmaschine, abhängig von der zurückliegenden Betriebsgeschwindigkeit der Druckmaschine, abhängig von der zurückliegenden Stillstanddauer der Druckmaschine sowie abhängig von der Umgebungstemperatur der Druckmaschine geschätzt bzw. prognostiziert. Die Dauer der Betriebsphasen, die Druckgeschwindigkeit in diesen Betriebsphasen, die Dauer der Stillstandphase sowie die hierbei jeweils herrschenden Umgebungstemperaturen bestimmen maßgeblich das Aufheizen sowie Abkühlen der Druckmaschine und demnach die Druckmaschinentemperatur oder die jeweilige Druckmaschinenbauteiltemperatur.The setting parameter is preferably estimated or predicted as a function of the past operating time of the printing press, depending on the past operating speed of the printing press, depending on the past downtime of the printing press and depending on the ambient temperature of the printing press. The duration of the operating phases, the printing speed in these operating phases, the duration of the standstill phase and the ambient temperatures prevailing in each case largely determine the heating up and cooling down of the printing press and accordingly the printing press temperature or the respective printing press component temperature.

Abhängig von der zurückliegenden Betriebsdauer, der zurückliegenden Betriebsgeschwindigkeit, der zurückliegenden Stillstanddauer sowie der Umgebungstemperatur der Druckmaschine kann demnach die Druckmaschinentemperatur oder die jeweilige Druckmaschinenbauteiltemperatur genau geschätzt oder prognostiziert werden, um dann abhängig hiervon den Einstellparameter, vorzugsweise die Feuchtmittelmenge der Feuchtmittelführung, zu bestimmen.Depending on the past operating time, the past operating speed, the past downtime as well as the ambient temperature of the printing press, the printing press temperature or the respective printing press component temperature can accordingly be estimated or predicted in order to then determine the setting parameters, preferably the amount of dampening solution of the dampening solution guide.

Dann, wenn eine steigende Druckmaschinentemperatur oder Druckmaschinenbauteiltemperatur geschätzt oder prognostiziert wird, wird die Feuchtmittelmenge der Feuchtmittelführung erhöht. Dann hingegen, wenn eine fallende Druckmaschinentemperatur oder Druckmaschinenbauteiltemperatur geschätzt oder prognostiziert wird, wird die Feuchtmittelmenge der Feuchtmittelführung reduziert. Hierdurch kann mit einfachen Mitteln die Druckqualität gesteigert werden.If an increasing printing press temperature or printing press component temperature is estimated or forecast, the amount of dampening solution of the dampening solution guide is increased. If, on the other hand, a falling printing press temperature or printing press component temperature is estimated or predicted, the amount of dampening solution of the dampening solution guide is reduced. In this way, the print quality can be increased with simple means.

Wie bereits ausgeführt, wird mindestens ein Einstellparameter geschätzt oder prognostiziert, und zwar in Abhängigkeit vom zurückliegenden Betrieb der Druckmaschine, also der Historie des Druckmaschinenbetriebs, und zwar abhängig von der Standzeit, der Laufzeit, der Betriebsgeschwindigkeit und der Umgebungstemperatur der Druckmaschine.As already stated, at least one setting parameter is estimated or predicted, depending on the past operation of the printing press, i.e. the history of the printing press operation, depending on the service life, the running time, the operating speed and the ambient temperature of the printing press.

Dabei ist insbesondere vorgesehen, dass empirisch ermittelte Kennfelder bzw. Kennlinien oder empirisch ermittelte Tabellen steuerungsseitig hinterlegt bzw. gespeichert sind, um auf Grundlage der zurückliegenden Betriebsdauer, der zurückliegenden Betriebsgeschwindigkeit, der zurückliegenden Stillstanddauer sowie der Umgebungstemperatur den Einstellparameter zu schätzen, insbesondere die Feuchtmittelmenge. Das jeweilige empirisch ermittelte Kennfeld bzw. die empirisch ermittelte Kennlinie oder die empirisch ermittelte Tabelle wird dabei vorzugsweise in einem Testbetrieb ermittelt, und zwar an der zu betreibenden Druckmaschine oder an einer zu betreibenden Druckmaschine typgleichen Druckmaschine. Dies erlaubt eine besonders vorteilhafte Prognostizierung des oder jedes Einstellparameters, welcher von der Druckmaschinentemperatur abhängig ist, insbesondere eine besonders vorteilhafte Ermittlung der Feuchtmittelmenge.In particular, it is provided that empirically determined characteristic diagrams or characteristic curves or empirically determined tables are stored or stored on the control side in order to estimate the setting parameter, in particular the amount of dampening solution, on the basis of the past operating time, the operating speed, the past idle time and the ambient temperature. The respective empirically determined characteristic diagram or the empirically determined characteristic curve or the empirically determined table is preferably determined in a test operation, specifically on the printing press to be operated or on a printing press of the same type to be operated. This allows a particularly advantageous prognosis of the or each setting parameter, which is dependent on the printing press temperature, in particular a particularly advantageous determination of the amount of dampening solution.

Bei dieser empirischen Ermittlung des Kennfelds bzw. der Kennlinie oder der Tabelle kann zum Beispiel im Testbetrieb der Druckmaschine abhängig von Betriebsdauern, Stillstanddauern, Druckgeschwindigkeiten und Umgebungstemperaturen die Druckmaschinentemperatur messtechnisch erfasst werden, um entsprechende Stützstellen in einem Kennfeld bzw. einer Kennlinie oder einer Tabelle zu hinterlegen. Zur Schätzung bzw. empirischen Ermittlung des entsprechenden Einstellparameters kann dann auf diese Stützstellen zugegriffen und zwischen denselben zum Beispiel interpoliert werden.With this empirical determination of the characteristic map or the characteristic curve or the table, for example, in test operation of the printing press, the printing press temperature can be measured depending on operating times, downtimes, printing speeds and ambient temperatures in order to store corresponding reference points in a characteristic diagram or a characteristic curve or a table . In order to estimate or empirically determine the corresponding setting parameter, these reference points can then be accessed and interpolated between them, for example.

Im Unterschied hierzu ist es auch möglich, nicht die Druckmaschinentemperatur im Testbetrieb zu messen, sondern einen von der Druckmaschinentemperatur abhängigen Messwert, so zum Beispiel eine sich ausbildende Flächendeckung. Die Flächendeckung ist von der Druckmaschinentemperatur abhängig und kann auch genutzt werden, um ein empirisch ermitteltes Kennfeld bzw. eine empirisch ermittelte Kennlinie bzw. eine empirisch ermittelte Tabelle bereitzustellen, auf die dann bei Ausführung des erfindungsgemäßen Verfahrens zugegriffen wird.In contrast to this, it is also possible not to measure the printing press temperature in test mode, but rather a measurement value that is dependent on the printing press temperature, for example a surface area that is developing. The area coverage is dependent on the printing press temperature and can also be used to generate an empirically determined map or an empirically determined one To provide a characteristic curve or an empirically determined table, which is then accessed when the method according to the invention is carried out.

Das Verfahren wird vollautomatisch ausgeführt, und zwar von einer Steuerungseinrichtung der Druckmaschine. Die Erfindung betrifft nicht nur das Verfahren zum Betreiben der Druckmaschine, sondern auch die Steuerungseinrichtung, welche das oben beschriebene Verfahren steuerungsseitig vollautomatisch ausführt. Die Steuerungseinrichtung schätzt oder prognostiziert demnach mindestens einen Einstellparameter für die Druckmaschine, insbesondere eine Feuchtmittelmenge der Feuchtmittelführung abhängig von einem zurückliegenden Betrieb der Druckmaschine Diesbezüglich wird auf die obigen Details, die im Zusammenhang mit dem Verfahren beschrieben wurden, Bezug genommen.The method is carried out fully automatically by a control device of the printing press. The invention relates not only to the method for operating the printing press, but also to the control device which executes the method described above fully automatically on the control side. The control device accordingly estimates or predicts at least one setting parameter for the printing press, in particular a dampening solution quantity of the dampening solution guide as a function of past operation of the printing press. In this regard, reference is made to the above details that were described in connection with the method.

Die Schätzung oder Prognostizierung des jeweiligen Einstellparameters wird vorzugsweise während des Betriebs dynamisch angepasst.The estimation or forecasting of the respective setting parameter is preferably adapted dynamically during operation.

Die Erfindung ist ohne Nachrüstung an im Feld genutzten Druckmaschinen einsetzbar. Betriebsdauern, Stillstanddauern, Druckgeschwindigkeiten stehen der Steuerungseinrichtung als Daten zur Verfügung. Abhängig von diesen Daten kann die Steuerungseinrichtung automatisch auf die oben beschriebene Art und Weise die Feuchtmittelmenge abhängig von der geschätzten oder prognostizierten Druckmaschinentemperatur ermitteln.The invention can be used without retrofitting on printing machines used in the field. Operating times, downtimes, printing speeds are available to the control device as data. Depending on this data, the control device can automatically determine the amount of dampening solution depending on the estimated or predicted printing press temperature in the manner described above.

Claims (12)

  1. A method for operating a printing press, namely for printing a printing material in printing units of the printing press,
    wherein the printing units each comprise an inking unit and a dampening unit,
    wherein setting parameters for the printing press are determined, on the basis of which the printing press is operated for printing the printing material,
    wherein at least one setting parameter for the printing press is estimated or predicted as a function of a past operation of the printing press,
    characterized in that
    the respective setting parameter for the printing press is derived indirectly from at least one other, estimated or predicted printing press parameter.
  2. The method according to claim 1, characterized in that the respective setting parameter is estimated or predicted as a function of a past operating time of the printing press and/or as a function of a past operating speed of the printing press and/or as a function of a past standstill time of the printing press.
  3. The method according to claim 1 or 2, characterized in that the respective setting parameter is estimated or predicted as a function of an ambient temperature of the printing press.
  4. The method according to one of claims 1 to 3, characterized in that an amount of dampening agent of a dampening solution supply of an inking unit of the printing press is estimated or predicted as setting parameter for the printing press.
  5. The method according to one of claims 1 to 4, characterized in that the respective setting parameter for the printing press is derived from an estimated or predicted printing press temperature or from an estimated or predicted printing press component temperature.
  6. The method according to claim 1 and 4, characterized in that the amount of dampening agent of the dampening solution supply is increased when an increasing printing press temperature or printing press component temperature is estimated or predicted, and that the amount of dampening agent of the dampening solution supply is reduced when a decreasing printing press temperature or printing press component temperature is estimated or predicted.
  7. The method according to claim 5 or 6, characterized in that a surface temperature of a forme cylinder of a printing unit of the printing press is estimated or predicted as printing machine component temperature.
  8. The method according to one of claims 1 to 7, characterized in that the respective setting parameter is estimated or predicted on the basis of an empirically determined characteristic diagram or an empirically determined table.
  9. The method according to claim 8, characterized in that the empirically determined characteristic diagram or the empirically determined table is determined in a test operation at the printing press to be operated or at a printing press, which is of the same type as the printing press to be operated.
  10. The method according to one of claims 1 to 9, characterized in that the respective setting parameter is estimated or predicted fully automatically.
  11. The method according to one of claims 1 to 10, characterized in that the estimation or prediction of the respective setting parameter is adapted dynamically during the operation.
  12. Control equipment for operating a printing press,
    wherein the printing press comprises printing units, each comprising an inking unit and a dampening unit,
    wherein the control equipment determines setting parameters for the printing press, on the basis of which the printing press is operated for printing a printing material in printing units of the printing press,
    wherein the control equipment estimates or predicts at least one setting parameter for the printing press as a function of a past operation of the printing press,
    characterized in that
    the control equipment is set up to carry out the method according to one of claims 1 to 11 on the control side.
EP18176200.6A 2017-07-06 2018-06-06 Control equipment and method for operating a printing press Active EP3424711B1 (en)

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DE102017115145.1A DE102017115145A1 (en) 2017-07-06 2017-07-06 Method and control device for operating a printing press

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EP3424711A1 EP3424711A1 (en) 2019-01-09
EP3424711B1 true EP3424711B1 (en) 2020-04-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516330A1 (en) * 1995-05-04 1996-11-07 Heidelberger Druckmasch Ag Process for adjusting the coloring in a printing press
DE19516353A1 (en) * 1995-05-04 1996-11-07 Heidelberger Druckmasch Ag Process for controlling or regulating the coloring during a printing process
DE19844495B4 (en) * 1998-09-29 2005-04-07 Man Roland Druckmaschinen Ag Method for color calibration by means of color management for a digitally controllable printing press with a rewritable printing form
DE19958252A1 (en) * 1999-12-03 2001-06-07 Heidelberger Druckmasch Ag Moisture-control printing machine, uses control circuit having fuzzy logic for estimating the foreseen required feed or supply of dampening agent
DE10152466B4 (en) * 2000-11-24 2015-12-17 Heidelberger Druckmaschinen Ag Humidity control taking into account several variables influencing the printing process
DE20305642U1 (en) * 2003-04-08 2003-09-04 Roland Man Druckmasch Control for a printing press
DE102009001302A1 (en) * 2009-03-03 2010-09-09 Manroland Ag Printing machine i.e. rotary printing press, operating method for determining speed dependent run-up curve for inking system of printing unit, involves obtaining support point of run-up curve from ink densities, and storing new run-up curve
CN102398414B (en) * 2010-09-10 2016-10-12 海德堡印刷机械股份公司 For the method regulating the coloring in printer
DE102011010006A1 (en) * 2011-02-01 2012-08-02 Manroland Ag Printing press control station
DE102014005289A1 (en) * 2013-05-08 2014-11-13 Heidelberger Druckmaschinen Ag Color control concept for printing machines with short inking unit
DE102016000335A1 (en) * 2016-01-18 2017-07-20 Heidelberger Druckmaschinen Ag Method for compensating job and machine specific registration inaccuracies and register errors

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ES2785701T3 (en) 2020-10-07
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