EP0726147A1 - Controller for the blanket washing system of a rotary offset printing machine with several units - Google Patents

Controller for the blanket washing system of a rotary offset printing machine with several units Download PDF

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Publication number
EP0726147A1
EP0726147A1 EP95119894A EP95119894A EP0726147A1 EP 0726147 A1 EP0726147 A1 EP 0726147A1 EP 95119894 A EP95119894 A EP 95119894A EP 95119894 A EP95119894 A EP 95119894A EP 0726147 A1 EP0726147 A1 EP 0726147A1
Authority
EP
European Patent Office
Prior art keywords
parameters
control
printing
type
print
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95119894A
Other languages
German (de)
French (fr)
Other versions
EP0726147B1 (en
Inventor
Claus Simet
Klaus Dürrnagel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0726147A1 publication Critical patent/EP0726147A1/en
Application granted granted Critical
Publication of EP0726147B1 publication Critical patent/EP0726147B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices

Definitions

  • the invention relates to a control for the blanket washing devices of an offset rotary printing press with a plurality of printing units arranged in series.
  • the degree of soiling and the type of soiling of the individual printing units are related to the number of copies, the substrate used, the color and the operating mode of the individual printing units.
  • the soiling caused by paper dust and paper coating which depends to a large extent on the number of copies, is greatest, for example, when entering the printing press, ie on the first printing unit and, in the case of reverse printing presses, even after the first turn. Since paper dust and paper coating can mainly be dissolved and cleaned with water, it is necessary, for example, to adjust the printing blanket washing devices of the printing units arranged at the inlet and after the first turn so that they work with a washing liquid with a higher water content.
  • the setting of the blanket washing devices of these two printing units mentioned is not the same, since the paper dust pollution after the turn in the Is usually less than the inlet.
  • the second printing unit after the run-in or after the turn is less contaminated with paper dust and therefore usually requires higher solvent proportions during the washing process.
  • Detergent dosing is another setting parameter. Since then, the appropriate, individual settings of the individual washing devices have to be made by the machine's operating personnel. Since these settings have to be found again and again, this involves additional effort and incorrect settings can occur which impair the print quality or the economy of the operation of the printing press.
  • the invention has for its object to provide a control for the blanket washing devices of several printing units of an offset rotary printing press, which enables the washing program to be automatically adapted to the mode of operation of the printing units.
  • an electronic data processing device consisting of a data input for various printing parameters, such as print run, type of printing material, operating mode of the individual printing units, type of printing ink, type of solvent, a data memory for storing the entered printing parameters, and an arithmetic unit
  • Control parameters such as solvent fractions, water fractions and their metered quantity, are calculated for the individual blanket washing devices from the entered print parameters, the computing unit accessing tables of characteristic values stored in a memory and / or processing algorithms which assign control parameters to the print parameters in accordance with predetermined laws, and from a data output for the calculated control parameters.
  • the characteristic values and algorithms used by the computing unit are determined empirically and on the respective Adapted machine type.
  • the parameters and algorithms are optimized so that the lowest amount of water or detergent is used.
  • the solvent content is also optimized to a minimum.
  • Experiences of the operating personnel can be taken into account according to the invention by entering control commands by means of which the control parameters can be changed temporarily or permanently.
  • the control according to the invention has the advantage that the setting of the printing press is considerably simplified. The operator is relieved and incorrect settings of the blanket washing devices are avoided.
  • the control according to the invention also takes into account the arrangement of the turn in convertible perfecting and printing machines, since this is also essential for the correct setting of the blanket washing devices.
  • the specified amounts are dosed for each washing process by the duration of the spraying time for spraying on water and solvent.
  • the entered print parameters are changed, e.g. the number of copies increased, this leads to a change in the control parameters, e.g. according to the characteristic values or regularities stored in the control system, e.g. a different increase in the amount of water and solvent in the individual printing units.

Landscapes

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

Abstract

The control has an electronic data processor. This has a data input for different print parameters e.g. board height, type of printing material, type of solution, mode of operation of individual print mechanisms, and type of ink etc. It also has a data memory to store the input parameters. A computing unit calculates control parameters e.g. proportion of solution, proportion of water and dispensing quantities, from the input print parameters, for that particular washing device. The computing unit accesses tables of characteristic values stored in the memory and/or processes algorithms which allocate control parameters to the print parameters according to predetermined rules. The control also has a data output for the derived control parameters. Preferably, the control parameters can be varied by inputting control commands.

Description

Die Erfindung betrifft eine Steuerung für die Drucktuch-Wascheinrichtungen einer Offset-Rotationsdruckmaschine mit mehreren in Reihe angeordneten Druckwerken.The invention relates to a control for the blanket washing devices of an offset rotary printing press with a plurality of printing units arranged in series.

Bei Offset-Rotationsdruckmaschinen mit mehreren Druckwerken sind die Anforderungen an die Drucktuch-Wascheinrichtungen der einzelnen Druckwerke sehr unterschiedlich. Der Verschmutzungsgrad und die Verschmutzungsart der einzelenen Druckwerke stehen im Zusammenhang mit der Auflagenhöhe, dem verwendeten Bedruckstoff, der Farbe und der Betriebsart der einzelnen Druckwerke. Die Verschmutzung durch Papierstaub und Papierstrich, die in starkem Maße auflagenabhängig ist, ist beispielsweise beim Einlauf in die Druckmaschine, d.h. am ersten Druckwerk und bei Widerdruckmaschinen auch nach der ersten Wendung am größten. Da Papierstaub und Papierstrich vornehmlich mit Wasser gelöst und gereinigt werden können, ist es beispielsweise notwendig, die Drucktuch-Wascheinrichtungen der am Einlauf und nach der ersten Wendung angeordneten Druckwerke so einzustellen, daß sie mit einer Waschflüssigkeit mit höherem Wasseranteil arbeiten. Gleichwohl ist jedoch die Einstellung der Drucktuch-Wascheinrichtungen dieser beiden genannten Druckwerke nicht gleich, da die Papierstaubbelastung nach der Wendung in der Regel geringer ist als beim Einlauf. Das zweite Druckwerk nach dem Einlauf oder nach der Wendung wird weniger mit Papierstaub verschmutzt und erfordert daher in der Regel höhere Lösungsmittelanteile beim Waschvorgang. Weitere Einstellparameter sind die Waschmitteldosierung. Die jeweils geeigneten, individuellen Einstellungen der einzelnen Wascheinrichtungen müssen seither vom Bedienungspersonal der Maschine vorgenommen werden. Da diese Einstellungen immer wieder neu gefunden werden müssen, ist dies mit zusätzlichem Aufwand verbunden und es kann zu Fehleinstellungen kommen, die die Druckqualität oder die Wirtschaftlichkeit des Betriebs der Druckmaschine beeinträchtigen.In offset rotary printing presses with several printing units, the requirements for the blanket washing devices of the individual printing units are very different. The degree of soiling and the type of soiling of the individual printing units are related to the number of copies, the substrate used, the color and the operating mode of the individual printing units. The soiling caused by paper dust and paper coating, which depends to a large extent on the number of copies, is greatest, for example, when entering the printing press, ie on the first printing unit and, in the case of reverse printing presses, even after the first turn. Since paper dust and paper coating can mainly be dissolved and cleaned with water, it is necessary, for example, to adjust the printing blanket washing devices of the printing units arranged at the inlet and after the first turn so that they work with a washing liquid with a higher water content. Nevertheless, the setting of the blanket washing devices of these two printing units mentioned is not the same, since the paper dust pollution after the turn in the Is usually less than the inlet. The second printing unit after the run-in or after the turn is less contaminated with paper dust and therefore usually requires higher solvent proportions during the washing process. Detergent dosing is another setting parameter. Since then, the appropriate, individual settings of the individual washing devices have to be made by the machine's operating personnel. Since these settings have to be found again and again, this involves additional effort and incorrect settings can occur which impair the print quality or the economy of the operation of the printing press.

Der Erfindung liegt die Aufgabe zugrunde, eine Steuerung für die Drucktuch-Wascheinrichtungen mehrerer Druckwerke einer Offset-Rotationsdruckmaschine zu schaffen, die eine selbsttätige Anpassung des Waschprogramms an die Betriebsweise der Druckwerke ermöglicht.The invention has for its object to provide a control for the blanket washing devices of several printing units of an offset rotary printing press, which enables the washing program to be automatically adapted to the mode of operation of the printing units.

Diese Aufgabe wird erfindungsgemäß durch eine elektronische Datenverarbeitungseinrichtung gelöst, bestehend aus einer Dateneingabe für verschiedene Druckparameter, wie Auflagenhöhe, Art des Bedruckstoffs, Betriebsart der einzelnen Druckwerke, Art der Druckfarbe, Art des Lösungsmittels, einem Datenspeicher zur Speicherung der eingegebenen Druckparameter, einer Recheneinheit, die aus den eingegebenen Druckparametern Steuerparameter, wie Lösungsmittelanteile, Wasseranteile und deren Dosiermenge, für die einzelnen Drucktuch-Wascheinrichtungen errechnet, wobei die Recheneinheit auf Tabellen von in einem Speicher abgelegten Kennwerten zugreift und/oder Algorithmen verarbeitet, die den Druckparametern nach vorgegebenen Gesetzen Steuerparameter zuordnen, und aus einer Datenausgabe für die errechneten Steuerparameter.
Die von der Recheneinheit verwendeten Kennwerte und Algorithmen werden empirisch ermittelt und an den jeweiligen Maschinentyp angepaßt. Die Kennwerte und Algorithmen werden dabei so optimiert, daß jeweils mit der wirtschaftlich geringsten Wasser- oder auch Waschmittelmenge gearbeitet wird. Ebenso werden die Lösungsmittelgehalte auf minimalem Niveau optimiert. Erfahrungen des Bedienungspersonals können erfindungsgemäß durch Eingabe von Steuerbefehlen berücksichtigt werden, durch die die Steuerparameter vorübergehend oder dauerhaft änderbar sind.This object is achieved according to the invention by an electronic data processing device, consisting of a data input for various printing parameters, such as print run, type of printing material, operating mode of the individual printing units, type of printing ink, type of solvent, a data memory for storing the entered printing parameters, and an arithmetic unit Control parameters, such as solvent fractions, water fractions and their metered quantity, are calculated for the individual blanket washing devices from the entered print parameters, the computing unit accessing tables of characteristic values stored in a memory and / or processing algorithms which assign control parameters to the print parameters in accordance with predetermined laws, and from a data output for the calculated control parameters.
The characteristic values and algorithms used by the computing unit are determined empirically and on the respective Adapted machine type. The parameters and algorithms are optimized so that the lowest amount of water or detergent is used. The solvent content is also optimized to a minimum. Experiences of the operating personnel can be taken into account according to the invention by entering control commands by means of which the control parameters can be changed temporarily or permanently.

Die erfindungsgemäße Steuerung hat den Vorteil, daß die Einstellung der Druckmaschine wesentlich vereinfacht wird. Das Bedienungspersonal wird entlastet und Fehleinstellungen der Drucktuch-Wascheinrichtungen werden vermieden. Die erfindungsgemäße Steuerung berücksichtigt auch bei umstellbaren Schön- und Widerdruckmaschinen die Anordnung der Wendung, da diese ebenfalls für die richtige Einstellung der Drucktuch-Wascheinrichtungen wesentlich ist.The control according to the invention has the advantage that the setting of the printing press is considerably simplified. The operator is relieved and incorrect settings of the blanket washing devices are avoided. The control according to the invention also takes into account the arrangement of the turn in convertible perfecting and printing machines, since this is also essential for the correct setting of the blanket washing devices.

Die Erfindung wird nachfolgend anhand eines Beispiels näher erläutert:
Bei einer Schön- und Widerdruckmaschine mit vier Druckwerken werden folgende Druckparameter für die Steuerung der Drucktuch-Wascheinrichtung der einzelnen Druckwerke eingegeben:

Papierart:
ungestrichenes Papier (d.h. starker Papierstaubanfall)
Auflagenhöhe:
8.000 Bogen pro Stunde
Wendung:
zwischen 2. und 3. Druckwerk
Die Steuerung errechnet hiernach folgende Steuerparameter für die in einem festgelegten zeitlichen Abstand erfolgenden Waschvorgänge der einzelnen Drucktuch-Wacheinrichtungen: Druckwerk 1: Wassermenge 0,02 ml Lösungsmittelmenge 0,01 ml Druckwerk 2: Wassermenge 0,01 ml Lösungsmittelmenge 0,02 ml Druckwerk 3: Wassermenge 0,01 ml Lösungsmittelmenge 0,01 ml Druckwerk 4: Wassermenge 0,01 ml Lösungsmittelmenge 0,015 ml The invention is explained in more detail below using an example:
In the case of a perfecting press with four printing units, the following printing parameters are entered for controlling the blanket washing device of the individual printing units:
Paper type:
uncoated paper (ie heavy paper dust)
Edition size:
8,000 sheets per hour
Turn:
between 2nd and 3rd printing unit
The controller then calculates the following control parameters for those taking place at a fixed time interval Washing processes of the individual blanket guard devices: Printing unit 1: Amount of water 0.02 ml Amount of solvent 0.01 ml Printing unit 2: Amount of water 0.01 ml Amount of solvent 0.02 ml Printing unit 3: Amount of water 0.01 ml Amount of solvent 0.01 ml Printing unit 4: Amount of water 0.01 ml Amount of solvent 0.015 ml

Die angegebenen Mengen werden bei jedem Waschvorgang durch die Dauer der Sprühzeit für das Aufsprühen von Wasser und Lösungsmittel dosiert.The specified amounts are dosed for each washing process by the duration of the spraying time for spraying on water and solvent.

Werden die eingegebenen Druckparameter geändert, z.B. die Auflagenhöhe vergrößert, so führt dies nach den in der Steuerung abgelegten Kennwerten oder Gesetzmäßigkeiten zu einer Änderung der Steuerparameter, z.B. einer unterschiedlichen Vergrößerung der Wasser- und Lösungsmittelmengen bei den einzelnen Druckwerken.If the entered print parameters are changed, e.g. the number of copies increased, this leads to a change in the control parameters, e.g. according to the characteristic values or regularities stored in the control system, e.g. a different increase in the amount of water and solvent in the individual printing units.

Claims (2)

Steuerung für die Drucktuch-Wascheinrichtungen einer Offset-Rotationsdruckmaschine mit mehreren in Reihe angeordneten Druckwerken, gekennzeichnet durch eine elektronische Datenverarbeitungseinrichtung mit einer Dateneingabe für verschiedene Druckparameter, wie Auflagenhöhe, Art des Bedruckstoffs, Art des Lösungsmittels, Betriebsart der einzelnen Druckwerke, Art der Druckfarbe, einem Datenspeicher zur Speicherung der eingegebenen Druckparameter, einer Recheneinheit, die aus den eingegebenen Druckparametern, Steuerparameter, wie Lösungsmittelanteile, Wasseranteile und deren Dosiermenge, für die einzelnen Drucktuch-Wascheinrichtungen errechnet, wobei die Recheneinheit auf Tabellen von in einem Speicher abgelegten Kennwerten zugreift und/oder Algorithmen verarbeitet, die den Druckparametern nach vorgegebenen Gesetzen Steuerparameter zuordnen, und mit einer Datenausgabe für die errechneten Steuerparameter.Control for the blanket washing devices of an offset rotary printing machine with several printing units arranged in series, characterized by an electronic data processing device with data input for various printing parameters, such as print run, type of substrate, type of solvent, operating mode of the individual printing units, type of printing ink, one Data memory for storing the entered printing parameters, a computing unit that calculates control parameters, such as solvent fractions, water fractions and their metered quantity, for the individual blanket washing devices from the entered printing parameters, the computing unit accessing tables of characteristic values stored in a memory and / or algorithms processed, which assign control parameters to the print parameters according to specified laws, and with a data output for the calculated control parameters. Steuerung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerparameter durch eine Eingabe von Steuerbefehlen vorübergehend oder dauerhaft änderbar sind.Control according to claim 1, characterized in that the control parameters can be changed temporarily or permanently by entering control commands.
EP95119894A 1995-01-20 1995-12-16 Controller for the blanket washing system of a rotary offset printing machine with several units Expired - Lifetime EP0726147B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19501694A DE19501694A1 (en) 1995-01-20 1995-01-20 Control for the blanket washing device of an offset rotary printing machine with several printing units
DE19501694 1995-01-20

Publications (2)

Publication Number Publication Date
EP0726147A1 true EP0726147A1 (en) 1996-08-14
EP0726147B1 EP0726147B1 (en) 1999-06-09

Family

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EP95119894A Expired - Lifetime EP0726147B1 (en) 1995-01-20 1995-12-16 Controller for the blanket washing system of a rotary offset printing machine with several units

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EP (1) EP0726147B1 (en)
AT (1) ATE181018T1 (en)
DE (2) DE19501694A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1516730A1 (en) * 2003-09-19 2005-03-23 Komori Corporation Method and apparatus for cleaning printing press
DE102007043857A1 (en) * 2007-09-14 2009-03-19 Manroland Ag Method for operating a web-fed printing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705632A1 (en) * 1997-02-14 1998-09-03 Roland Man Druckmasch Method and arrangement for cleaning a part of a printing unit of an offset printing machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325381A2 (en) * 1988-01-19 1989-07-26 Jimek Ab A control system for operating a spray dampening system
EP0372588A2 (en) * 1988-12-08 1990-06-13 Baldwin-Gegenheimer GmbH Method and device for cleaning the cylinders in a rotary press
WO1991013760A1 (en) * 1990-03-06 1991-09-19 Reinhold Berntsson System at spray dampening apparatus
EP0590833A1 (en) * 1992-10-02 1994-04-06 BALDWIN GRAPHIC SYSTEMS, Inc. Automatic cleaning system for press rollers and cylinders
US5325780A (en) * 1993-03-09 1994-07-05 Sakurai Graphic Systems Ink washing device for a printing machine
DE4338625A1 (en) * 1993-11-12 1995-05-18 Oxy Dry Maschinen Gmbh Process for fully automatic cylinder cleaning in printing presses with a central control system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325381A2 (en) * 1988-01-19 1989-07-26 Jimek Ab A control system for operating a spray dampening system
EP0372588A2 (en) * 1988-12-08 1990-06-13 Baldwin-Gegenheimer GmbH Method and device for cleaning the cylinders in a rotary press
WO1991013760A1 (en) * 1990-03-06 1991-09-19 Reinhold Berntsson System at spray dampening apparatus
EP0590833A1 (en) * 1992-10-02 1994-04-06 BALDWIN GRAPHIC SYSTEMS, Inc. Automatic cleaning system for press rollers and cylinders
US5325780A (en) * 1993-03-09 1994-07-05 Sakurai Graphic Systems Ink washing device for a printing machine
DE4338625A1 (en) * 1993-11-12 1995-05-18 Oxy Dry Maschinen Gmbh Process for fully automatic cylinder cleaning in printing presses with a central control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1516730A1 (en) * 2003-09-19 2005-03-23 Komori Corporation Method and apparatus for cleaning printing press
DE102007043857A1 (en) * 2007-09-14 2009-03-19 Manroland Ag Method for operating a web-fed printing machine

Also Published As

Publication number Publication date
ATE181018T1 (en) 1999-06-15
DE19501694A1 (en) 1996-07-25
DE59506166D1 (en) 1999-07-15
EP0726147B1 (en) 1999-06-09

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