EP0710557A1 - Device and method for controlled transfer of ink - Google Patents

Device and method for controlled transfer of ink Download PDF

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Publication number
EP0710557A1
EP0710557A1 EP95115881A EP95115881A EP0710557A1 EP 0710557 A1 EP0710557 A1 EP 0710557A1 EP 95115881 A EP95115881 A EP 95115881A EP 95115881 A EP95115881 A EP 95115881A EP 0710557 A1 EP0710557 A1 EP 0710557A1
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EP
European Patent Office
Prior art keywords
ink
inking roller
roller
drive
lifter
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
EP95115881A
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German (de)
French (fr)
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EP0710557B1 (en
Inventor
Rudi Junghans
Georg Rössler
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/02Ducts, containers, supply or metering devices
    • B41F31/14Applications of messenger or other moving transfer rollers

Definitions

  • the invention relates to a device and a method for precise metering transfer of printing ink between a doctor roller and a first inking roller, in particular in the offset printing process, with an inking roller that can be moved back and forth by means of a pivoting mechanism independently of the main drive of the printing press between a inking element and a first inking roller.
  • the disadvantage here is that the phase relationship between the machine movement and the movement of the ink lifter is not coupled and, as a result, no defined setting of the phase position of the lifter to the printing unit drive is possible.
  • the disadvantage of this device is that the system of the jack roller on the ductor or the first inking roller is predetermined by means of a cam control and therefore no individual settings are possible.
  • German patent specification DE 33 24 448 C1 describes an ink metering device for book and offset printing presses, the lifting roller of which consists of several disks arranged side by side, which can be switched individually.
  • the problem that arises here is that a large number of actuating elements and sensors are required to control and monitor the individual disks.
  • the resulting management of the control and monitoring signals requires a high computing capacity and takes up a large amount of computing time.
  • the mechanical problems that result from the division of the lifter roller into individual disks are heavy soiling of the gaps resulting from the division, a high level of adjustment work to ensure that each disk is evenly positioned on the ductor or ink roller, and exact balancing of each single disc to avoid vibrations.
  • the object of the invention is to implement an ink lifter device, which is driven for individual adjustment and independently of the drive of the printing press, and a method necessary for this.
  • the advantage of the invention lies in the simplicity of the construction and in the variety of possible variations, which is given by the independence of the color lifter.
  • the design simplification is that no complicated gears, rods, etc. are necessary to tap the movement from the gear train.
  • the synchronization to the main drive takes place via an already known incremental encoder which is read in and evaluated by a computer system.
  • the phase position of the ink lifter i. H. the point in time at which the ink lifter touches the first inking roller can be set in such a way that the vibrational excitations that may arise have the least influence on the print quality. This could e.g. B. be when the inking rollers face the channel of the plate cylinder. Another option would be to select a location that is not critical in the subject.
  • the direct discontinuous drive of the ink lifter pivoting device has the advantage that the application speed can be selected so that almost no vibrations occur when the ink lifter roller is in contact with the ductor or the first inking roller.
  • the adjustable dwell time on the ductor or on the first inking roller gives the printer the advantage of being able to choose the ink lifter speed, ie the number of ink lifter movements per machine revolution, depending on the subject to be printed. With small lifting speed can correspondingly more ink are transported from the ductor to the first inking roller, which is why it is possible to additionally influence the amount of ink by the ink layer thicknesses, and thus also to set it differently zonally. Low speed is only chosen if a work with a relatively low coloring is to be printed. Usually a 1/2 or 1/3 speed setting is selected. It is also possible to set a different ink lifter speed in each printing unit.
  • ink lifter movement which is operated independently of the machine cycle, is that the ink lifter speed can be adjusted unevenly, i. H. after a certain number of ink lifter movements, one or more ink lifter movements can be suspended.
  • a further advantage of this control is the possibility to stop the drive when the machine is "switched off” so that the inking roller just touches the inking roller.
  • Figure 1 shows an inking roller 1, which is mounted on an angled lever 2.
  • the angled lever 2 is mounted in a fulcrum 3 and is moved up and down by means of a cam mechanism 4 over a roller such that the inking roller 1 swings back and forth between an inking roller 6 and an inking roller 7.
  • the inking roller 1 takes up the ink removed from the inking roller 6 from an ink fountain 8 and feeds it to the inking roller 7.
  • the inking roller 6 and the inking roller 7 are driven by a wheel train or motor, not shown.
  • the inking roller 1 has no drive but is rotated by the friction on the inking roller 6 on the one hand and on the inking roller 7 on the other.
  • a spring 9 ensures that the roller 5 constantly rolls on the cam mechanism 4.
  • the setpoint generator 11 receives the actual values of the printing unit speed DW through an incremental encoder 12 and the angular position of the printing unit ⁇ DW .
  • the setpoint generator 11 generates an angle setpoint ⁇ S and a speed setpoint ⁇ S from these input values. These setpoints ( ⁇ S , ⁇ S ) are fed to an angle controller 14 and a speed controller 15 via an addition stage 13.
  • the speed controller 15 generates a current setpoint i S , which is fed to a power unit 16.
  • the power unit 16 controls a motor 17, on the shaft 18 of which the cam mechanism 4 is mechanically attached.
  • On the shaft 18 there is also an incremental encoder 19 which determines the actual value of the speed ⁇ H and the angular position ⁇ H. These values are fed to the addition stage 13 with a negative sign.
  • FIG. 3 shows a setpoint generator 11 which, as in FIG. 2, generates a signal from the input signals Sb, kt, ⁇ DW-H , ⁇ DW , ⁇ DW , which is fed to a step controller 21.
  • the step controller 21 controls a power unit 16, which represents the power supply for the stepper motor 22.
  • the stepper motor 22 moves the ink lifter 1 back and forth between the inking roller 6 (not shown) and the inking roller 7 via a shaft 18.
  • This embodiment has the advantage that no feedback for the position of the stepper motor 22 is required.
  • FIG. 4 shows a motor 31, the design of which makes no statement, which is connected to a cam segment 32.
  • the cam segment 32 has different radii r1, r2.
  • a roller 5 runs on the cam segment 32 and is operatively connected to an angle lever 2.
  • This angle lever 2 is mounted in a fulcrum 3 and, when the motor 31 rotates, swivels the ink lifter 1 back and forth between the inking roller 6 and inking roller 7, not shown.
  • FIG. 5 shows a representation similar to the pivoting of the inking roller 1 as in FIG. 4, but with a linear motor 41 acting directly on an angle lever 2. The deflection of the linear motor 41 causes the inking roller 1 to be pivoted back and forth via the angle lever 2.
  • FIG. 6 shows the idealized peripheral speed profile u in the inking roller.
  • the inking roller 1 lies against the inking roller 7 and is driven over the period t0 to t1 by the inking roller 7, ie the ink is transported from the inking roller 1 to the inking roller 7.
  • the inking roller 1 is separated from the inking roller 7 and pivoted to the inking roller 6, the system being applied to the inking roller 6 at time t2.
  • the speed of the inking roller 1 is undefined.
  • the peripheral speed of the inking roller 1 is equal to the inking roller 6.
  • the ink is transported from the inking roller 6 to the inking roller 1.
  • the inking roller 1 is separated from the inking roller 6 and pivoted to the inking roller 7.
  • the speed of the inking roller 1 is also undefined.
  • the period t0 to t1, t2 to t3 as well as the phase position of the times t0 and t2 for the printing unit movement can be individually adjusted by the printer to the respective print job or the printing unit conditions.
  • the period t2 to t3 is usefully max. to be chosen so large that the inking roller 1 bears against the inking roller 6 one revolution.

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

Abstract

The device contains an ink raising roller (1) reciprocally movable between an ink ductor (6) and a first ink roller (7) by a pivoting mechanism (2,3) with a discontinuous drive independently of the main drive of the printing machine. The drive is a linear drive, pref. a linear motor or a piezoactuator. The phase relationship between the ink raising roller and a plate cylinder, the number of ink raising cards per machine revolution and the dwell time on the colour ductor and on the first ink roller can be individually adjusted.

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur dosiergenauen übertragung von Druckfarbe zwischen einer Duktorwalze und einer ersten Farbwalze insbesondere beim Offsetdruckprozess mit einer unabhängig vom Hauptantrieb der Druckmaschine zwischen einem Farbduktor und einer ersten Farbwalze mittels Schwenkmechanismus hin- und bewegbaren Farbheberwalze.The invention relates to a device and a method for precise metering transfer of printing ink between a doctor roller and a first inking roller, in particular in the offset printing process, with an inking roller that can be moved back and forth by means of a pivoting mechanism independently of the main drive of the printing press between a inking element and a first inking roller.

Aus der DE 39 35 215 A1 ist bekannt, für schnellaufende Rollen Rotationsdruckmaschinen ein mittels Elektromotor angetriebenes Heberkurvengetriebe zu verwenden, um die Hebertourigkeit unabhängig vom Maschinentakt einzustellen. Diese Erfindung bietet die Möglichkeit bei hohen Maschinendrehzahlen die Heberfrequenz unter der Dynamikgrenze des Heberfarbwerks zu belassen um dadurch den Qualtitätsansprüchen des Farbdrucks zu genügen.From DE 39 35 215 A1 it is known to use a lifting cam gear driven by an electric motor for high-speed rotary printing presses in order to set the lifting speed independently of the machine cycle. This invention offers the possibility of keeping the lifter frequency below the dynamic limit of the lifter inking unit at high machine speeds in order to thereby meet the quality requirements of color printing.

Von Nachteil ist dabei, daß die Phasenbeziehung zwischen der Maschinenbewegung und der Bewegung des Farbhebers nicht gekoppelt ist und dadurch auch keine definierte Einstellung der Phasenlage des Hebers zum Druckwerksantrieb möglich ist.The disadvantage here is that the phase relationship between the machine movement and the movement of the ink lifter is not coupled and, as a result, no defined setting of the phase position of the lifter to the printing unit drive is possible.

Als weiterer Nachteil ist zu sehen, daß die Anlagezeit des Farbhebers weder am Duktor noch an der ersten Farbreiberwalze einstellbar ist.Another disadvantage can be seen that the installation time of the ink lifter is neither adjustable on the ductor nor on the first inking roller.

Aus der DE 23 41 510 A1 geht hervor, einen Farbwerkssteuermechanismus mittels Elektromotor anzutreiben. Die Synchronisation erfolgt, indem eines der durch eine Hauptantriebswelle angetriebenes Zahnrad als dasjenige Zahnrad ausgesucht wird, welchem der Farbwerkssteuerungsmechanismus zu folgen hat. Über einen Impulsgeber, der die Abtastung der Zahnradposition vornimmt, ist eine relative Phasenposition des Farbwerks zum Hauptantrieb einstell- und regelbar.DE 23 41 510 A1 shows that an inking unit control mechanism is driven by means of an electric motor. The synchronization takes place by one of the Main drive shaft driven gear is selected as the gear which the inking mechanism control mechanism has to follow. A relative phase position of the inking unit to the main drive can be set and regulated via a pulse generator which scans the gear position.

Nachteil dieser Vorrichtung ist es, daß die Anlagezelt der Heberwalze am Duktor bzw. der ersten Farbwalze mittels einer Nockensteuerung vorgegeben ist und deshalb keine individuellen Einstellungen möglich sind.The disadvantage of this device is that the system of the jack roller on the ductor or the first inking roller is predetermined by means of a cam control and therefore no individual settings are possible.

Die deutschen Patentschrift DE 33 24 448 C1 beschreibt eine Farbdosiereinrichtung für Buch- und Offsetdruckmaschinen, deren Heberwalze aus mehreren nebeneinander angeordneten Scheiben besteht, die individuell schaltbar sind.German patent specification DE 33 24 448 C1 describes an ink metering device for book and offset printing presses, the lifting roller of which consists of several disks arranged side by side, which can be switched individually.

Hierbei ergibt sich das Problem, daß zur Ansteuerung und überwachung der einzelnen Scheiben eine Vielzahl von Stellelementen und Sensoren nötig sind. Die daraus entstehende Verwaltung der Ansteuer- und Überwachungssignale benötigt eine hohe Rechnerkapazität und nimmt einen hohen Anteil von Rechnerzeit in Anspruch. Die mechanischen Probleme, die aus der Teilung der Heberwalze in einzelne Scheiben entstehen, sind eine starke Verschmutzung der durch die Teilung entstandenen Spalte, ein hoher Aufwand an Justierarbeit zur gleichmäßigen Anlage jeder Scheibe am Duktor- bzw. an der Farbwalze, sowie ein exaktes Auswuchten jeder einzelnen Scheibe zur Vermeidung von Schwingungen.The problem that arises here is that a large number of actuating elements and sensors are required to control and monitor the individual disks. The resulting management of the control and monitoring signals requires a high computing capacity and takes up a large amount of computing time. The mechanical problems that result from the division of the lifter roller into individual disks are heavy soiling of the gaps resulting from the division, a high level of adjustment work to ensure that each disk is evenly positioned on the ductor or ink roller, and exact balancing of each single disc to avoid vibrations.

Aufgabe der Erfindung ist es, eine zur individuellen Einstellung und unabhängig vom Antrieb der Druckmaschine angetriebene Farbhebervorrichtung und ein dazu notwendiges Verfahren zu realisieren.The object of the invention is to implement an ink lifter device, which is driven for individual adjustment and independently of the drive of the printing press, and a method necessary for this.

Die Lösung der gestellten Aufgabe wird durch die Merkmale des Kennzeichens von Anspruch 1 und 3 erreicht.The solution to the problem is achieved by the features of the characterizing part of claims 1 and 3.

Der Vorteil der Erfindung liegt in der Einfachheit der Konstruktion und in der Vielfalt von Variationsmöglichkeiten, die durch die Unabhängigkeit des Farbhebers gegeben ist. Die konstruktive Vereinfachung liegt darin, daß keine komplizierten Getriebe, Gestänge u.s.w. zum Abgriff der Bewegung aus dem Räderzug notwendig sind. Die Synchronisation zum Hauptantrieb erfolgt über einen ohnehin vorhandenen bereits bekannten Inkrementalgeber, der von einem Rechnersystem eingelesen und ausgewertet wird.The advantage of the invention lies in the simplicity of the construction and in the variety of possible variations, which is given by the independence of the color lifter. The design simplification is that no complicated gears, rods, etc. are necessary to tap the movement from the gear train. The synchronization to the main drive takes place via an already known incremental encoder which is read in and evaluated by a computer system.

Durch die Steuerung über ein Rechnersystem sind folgende Möglichkeiten realisierbar:The following options can be realized by control via a computer system:

Die Phasenlage des Farbhebers, d. h. der Zeitpunkt in dem der Farbheber die erste Farbwalze berührt, kann so gelegt werden, daß die dabei eventuell entstehenden Schwingungsanregungen den geringsten Einfluß auf die Druckqualität haben. Dieses könnte z. B. dann sein, wenn die Farbauftragswalzen dem Kanal des Plattenzylinders gegenüber stehen. Eine weitere Möglichkeit wäre, eine im Sujet unkritische Stelle auszuwählen.The phase position of the ink lifter, i. H. the point in time at which the ink lifter touches the first inking roller can be set in such a way that the vibrational excitations that may arise have the least influence on the print quality. This could e.g. B. be when the inking rollers face the channel of the plate cylinder. Another option would be to select a location that is not critical in the subject.

Der direkte diskontinuierliche Antrieb der Farbheberschwenkvorrichtung bringt den Vorteil, daß im Moment der Anlage der Farbheberwalze an den Duktor bzw. die erste Farbwalze die Anlegegeschwindigkeit so gewählt werden kann, daß dabei fast keine Schwingungen entstehen.The direct discontinuous drive of the ink lifter pivoting device has the advantage that the application speed can be selected so that almost no vibrations occur when the ink lifter roller is in contact with the ductor or the first inking roller.

Die einstellbare Verweildauer am Duktor bzw. an der ersten Farbwalze bringt dem Drucker den Vorteil, die Farbhebertourigkeit, d. h. die Anzahl der Farbheberbewegungen pro Maschinenumdrehung in Abhängigkeit vom zu druckenden Sujet frei zu wählen. Bei kleiner Hebertourigkeit kann entsprechend mehr Farbe von dem Duktor zur ersten Farbwalze transportiert werden, weshalb es möglich ist, die Farbmenge zusätzlich durch die Farbschichtdicken zu beeinflussen, und damit auch zonal verschieden einzustellen. Eine geringe Tourigkeit wird nur gewählt, wenn eine Arbeit mit relativ geringer Färbung zu drucken ist. In der Regel wird eine 1/2 oder 1/3-tourige Einstellung gewählt. Es ist dabei auch möglich, in jedem Druckwerk eine unterschiedliche Farbhebertourigkeit einzustellen.The adjustable dwell time on the ductor or on the first inking roller gives the printer the advantage of being able to choose the ink lifter speed, ie the number of ink lifter movements per machine revolution, depending on the subject to be printed. With small lifting speed can correspondingly more ink are transported from the ductor to the first inking roller, which is why it is possible to additionally influence the amount of ink by the ink layer thicknesses, and thus also to set it differently zonally. Low speed is only chosen if a work with a relatively low coloring is to be printed. Usually a 1/2 or 1/3 speed setting is selected. It is also possible to set a different ink lifter speed in each printing unit.

Eine zusätzliche Möglichkeit der unabhängig vom Maschinentakt betriebenen Farbheberbewegung ist die, daß die Farbhebertourigkeit ungleichmäßig eingestellt werden kann, d. h. nach einer bestimmten Anzahl von Farbheberbewegungen kann eine oder mehrere Farbheberbewegungen ausgesetzt werden.An additional possibility of the ink lifter movement, which is operated independently of the machine cycle, is that the ink lifter speed can be adjusted unevenly, i. H. after a certain number of ink lifter movements, one or more ink lifter movements can be suspended.

Ein weiterer Vorteil dieser Steuerung ist die Möglichkeit, bei "Druckabstellung" der Maschine den Antrieb so stillzusetzen, daß die Farbheberwalze gerade an der Farbreibwalze anliegt.A further advantage of this control is the possibility to stop the drive when the machine is "switched off" so that the inking roller just touches the inking roller.

Die Erfindung soll nachfolgend anhand verschiedener Ausführungsbeispiele näher verdeutlicht werden.

Fig. 1
zeigt eine Vorrichtung zum Hin- und Herschwenken einer Farbheberwalze zwischen einer Farbduktorwalze und einer Farbreiberwalze,
Fig. 2
zeigt ein Blockschaltbild zur Regelung der Streifenbreite, der Farbhebertourigkeit und der Phasenlage,
Fig. 3
zeigt die Realisierung wie in Fig. 2 anhand eines Schrittmotors,
Fig. 4, 5
zeigen die prinzipielle Darstellung des Verschwenkens einer Farbheberwalze und
Fig. 6
zeigt ein Diagramm mit dem Geschwindigkeitsverlauf u der Farbheberwalze.
The invention will be explained in more detail below using various exemplary embodiments.
Fig. 1
shows a device for swiveling an inking roller back and forth between an inking roller and an inking roller,
Fig. 2
shows a block diagram for controlling the stripe width, the color lifter speed and the phase position,
Fig. 3
shows the implementation as in Fig. 2 using a stepper motor,
4, 5
show the basic illustration of the pivoting of an ink roller and
Fig. 6
shows a diagram with the speed profile u of the inking roller.

Figur 1 zeigt eine Farbheberwalze 1, die an einem abgewinkelten Hebel 2 gelagert ist. Der abgewinkelte Hebel 2 ist in einem Drehpunkt 3 gelagert und wird mittels Kurvengetriebe 4 über eine Rolle so auf und ab bewegt, daß die Farbheberwalze 1 zwischen einer Farbduktorwalze 6 und einer Farbreiberwalze 7 hin- und herschwenkt. Dabei nimmt die Farbheberwalze 1 die von der Farbduktorwalze 6 aus einem Farbkasten 8 entnommene Farbe auf und führt sie der Farbreiberwalze 7 zu. Die Farbduktorwalze 6 und die Farbreiberwalze 7 werden von einem nicht dargestellten Räderzug oder Motor angetrieben. Die Farbheberwalze 1 hat keinen Antrieb sondern wird durch die Friktion an der Farbduktorwalze 6 einerseits wie an der Farbreiberwalze 7 andererseits gedreht. Eine Feder 9 sorgt dafür, daß die Rolle 5 ständig auf dem Kurvengetriebe 4 abrollt.Figure 1 shows an inking roller 1, which is mounted on an angled lever 2. The angled lever 2 is mounted in a fulcrum 3 and is moved up and down by means of a cam mechanism 4 over a roller such that the inking roller 1 swings back and forth between an inking roller 6 and an inking roller 7. The inking roller 1 takes up the ink removed from the inking roller 6 from an ink fountain 8 and feeds it to the inking roller 7. The inking roller 6 and the inking roller 7 are driven by a wheel train or motor, not shown. The inking roller 1 has no drive but is rotated by the friction on the inking roller 6 on the one hand and on the inking roller 7 on the other. A spring 9 ensures that the roller 5 constantly rolls on the cam mechanism 4.

Figur 2 zeigt einen Sollwertgenerator 11 der vom Bediener folgende Eingabewerte erhält:

Sb =
Einstellung der Streifenbreite, d. h. die Farbmenge die vom Farbduktor auf die Farbheberwalze übernommen werden soll.
kt =
Farbhebertourigkeit, d. h. die Anzahl der Farbheberbewegungen pro Maschinenumdrehung.
φDW-H =
Phasenlage zwischen Farbheberbewegung und Druckwerk.
FIG. 2 shows a setpoint generator 11 which receives the following input values from the operator:
Sb =
Setting the stripe width, ie the amount of ink to be transferred from the ink fountain roller to the inking roller.
kt =
Ink lifter speed, ie the number of ink lifter movements per machine revolution.
φ DW-H =
Phase position between ink lifter movement and printing unit.

Durch einen Inkrementalgeber 12 erhält der Sollwertgenerator 11 die Istwerte der Druckwerksdrehzahl DW und der Winkelstellung des Druckwerks φDW. Aus diesen Eingangswerten erzeugt der Sollwertgenerator 11 einen Winkelsollwert φS und einen Drehzahlsollwert ωS. Diese Sollwerte (φSS) werden über eine Additionsstufe 13 einem Winkelregler 14 und einem Drehzahlregler 15 zugeführt. Der Drehzahlregler 15 erzeugt einen Stromsollwert iS, der einem Leistungsteil 16 zugeführt wird. Das Leistungsteil 16 steuert einen Motor 17 an, an dessen Welle 18 das Kurvengetriebe 4 mechanisch angebracht ist. Auf der Welle 18 befindet sich ebenfalls ein Inkrementalgeber 19, der den Istwert der Drehzahl ωH und der Winkelstellung φH ermittelt. Diese Werte werden mit negativem Vorzeichen der Additionsstufe 13 zugeführt.The setpoint generator 11 receives the actual values of the printing unit speed DW through an incremental encoder 12 and the angular position of the printing unit φ DW . The setpoint generator 11 generates an angle setpoint φ S and a speed setpoint ω S from these input values. These setpoints (φ S , ω S ) are fed to an angle controller 14 and a speed controller 15 via an addition stage 13. The speed controller 15 generates a current setpoint i S , which is fed to a power unit 16. The power unit 16 controls a motor 17, on the shaft 18 of which the cam mechanism 4 is mechanically attached. On the shaft 18 there is also an incremental encoder 19 which determines the actual value of the speed ω H and the angular position φ H. These values are fed to the addition stage 13 with a negative sign.

Figur 3 zeigt einen Sollwertgenerator 11 der wie in Figur 2 aus den Eingangssignalen Sb, kt, φDW-H, φDW, ωDW ein Signal erzeugt, das einer Schrittsteuerung 21 zugeführt wird. Die Schrittsteuerung 21 steuert ein Leistungsteil 16, welches die Stromversorgung für den Schrittmotor 22 darstellt. Der Schrittmotor 22 bewegt über eine Welle 18 den Farbheber 1 zwischen der nicht dargestellten Farbduktorwalze 6 und der Farbreiberwalze 7 hin und her. Diese Ausführung hat den Vorteil, daß keine Rückmeldung für die Position des Schrittmotors 22 erforderlich ist.FIG. 3 shows a setpoint generator 11 which, as in FIG. 2, generates a signal from the input signals Sb, kt, φ DW-H , φ DW , ω DW , which is fed to a step controller 21. The step controller 21 controls a power unit 16, which represents the power supply for the stepper motor 22. The stepper motor 22 moves the ink lifter 1 back and forth between the inking roller 6 (not shown) and the inking roller 7 via a shaft 18. This embodiment has the advantage that no feedback for the position of the stepper motor 22 is required.

Figur 4 zeigt einen Motor 31, über dessen Bauart keine Aussage getroffen wird, der mit einem Kurvenscheibensegment 32 verbunden ist. Das Kurvenscheibensegment 32 hat unterschiedliche Radien r₁, r₂. Auf dem Kurvenscheibensegment 32 läuft eine Rolle 5, die mit einem Winkelhebel 2 in Wirkverbindung steht. Dieser Winkelhebel 2 ist in einem Drehpunkt 3 gelagert und schwenkt bei Drehung des Motors 31 den Farbheber 1 zwischen der nicht dargestellten Farbduktorwalze 6 und Farbreiberwalze 7 hin und her.FIG. 4 shows a motor 31, the design of which makes no statement, which is connected to a cam segment 32. The cam segment 32 has different radii r₁, r₂. A roller 5 runs on the cam segment 32 and is operatively connected to an angle lever 2. This angle lever 2 is mounted in a fulcrum 3 and, when the motor 31 rotates, swivels the ink lifter 1 back and forth between the inking roller 6 and inking roller 7, not shown.

Figur 5 zeigt eine ähnliche Darstellung zum Verschwenken der Farbheberwalze 1 wie Figur 4, jedoch einen direkt an einem Winkelhebel 2 angreifenden Linearmotor 41. Die Auslenkung des Linearmotors 41 bewirkt über den Winkelhebel 2 ein Hin- und Herschwenken der Farbheberwalze 1.FIG. 5 shows a representation similar to the pivoting of the inking roller 1 as in FIG. 4, but with a linear motor 41 acting directly on an angle lever 2. The deflection of the linear motor 41 causes the inking roller 1 to be pivoted back and forth via the angle lever 2.

Figur 6 zeigt den idealisierten Umfangsgeschwindigkeitsverlauf u in der Farbheberwalze. Zum Zeitpunkt t₀ liegt die Farbheberwalze 1 an der Farbreiberwalze 7 an und wird über den Zeitraum t₀ bis t₁ durch die Farbreiberwalze 7 angetrieben, d. h. die Farbe wird von der Farbheberwalze 1 auf die Farbreiberwalze 7 transportiert. Im Zeitpunkt t₁ wird die Farbheberwalze 1 von der Farbreiberwalze 7 getrennt und zur Farbduktorwalze 6 geschwenkt, wobei die Anlage an die Farbduktorwalze 6 zum Zeitpunkt t₂ erfolgt. Im Zeitraum zwischen t₁ und t₂ ist die Geschwindigkeit der Farbheberwalze 1 undefiniert. Im Zeitraum t₂ bis t₃ ist die Umfangsgeschwindigkeit der Farbheberwalze 1 gleich der Farbduktorwalze 6. Dabei wird die Farbe von der Farbduktorwalze 6 auf die Farbheberwalze 1 transportiert. Im Zeitpunkt t₃ wird die Farbheberwalze 1 von der Farbduktorwalze 6 getrennt und zur Farbreiberwalze 7 geschwenkt. Im Zeitraum t₃ bis t₀ ist die Geschwindigkeit der Farbheberwalze 1 ebenfalls undefiniert. Der Zeitraum t₀ bis t₁, t₂ bis t₃ wie auch die Phasenlage der Zeitpunkte t₀ und t₂ zur Druckwerksbewegung kann vom Drucker individuell auf den jeweiligen Druckauftrag bzw. die Druckwerksverhältnisse angepaßt werden. Der Zeitraum t₂ bis t₃ ist sinnvollerweise max. so groß zu wählen, daß die Farbheberwalze 1 eine Umdrehung an der Farbduktorwalze 6 anliegt.FIG. 6 shows the idealized peripheral speed profile u in the inking roller. At the time t₀ the inking roller 1 lies against the inking roller 7 and is driven over the period t₀ to t₁ by the inking roller 7, ie the ink is transported from the inking roller 1 to the inking roller 7. At the time t₁ the inking roller 1 is separated from the inking roller 7 and pivoted to the inking roller 6, the system being applied to the inking roller 6 at time t₂. In the period between t₁ and t₂, the speed of the inking roller 1 is undefined. In the period t₂ to t₃, the peripheral speed of the inking roller 1 is equal to the inking roller 6. The ink is transported from the inking roller 6 to the inking roller 1. At the time t₃, the inking roller 1 is separated from the inking roller 6 and pivoted to the inking roller 7. In the period t₃ to t₀ the speed of the inking roller 1 is also undefined. The period t₀ to t₁, t₂ to t₃ as well as the phase position of the times t₀ and t₂ for the printing unit movement can be individually adjusted by the printer to the respective print job or the printing unit conditions. The period t₂ to t₃ is usefully max. to be chosen so large that the inking roller 1 bears against the inking roller 6 one revolution.

BezugszeichenlisteReference list

11
FarbheberwalzeInking roller
22nd
WinkelhebelAngle lever
33rd
Drehpunktpivot point
44th
KurvengetriebeCam gear
55
Rollerole
66
FarbduktorwalzeInk roller
77
FarbreiberwalzeInk roller
88th
FarbkastenPaint box
99
Federfeather
1111
SollwertgeneratorSetpoint generator
1212th
InkrementalgeberIncremental encoder
1313
AdditionsstufeAddition level
1414
WinkelreglerAngle controller
1515
DrehzahlreglerSpeed controller
1616
LeistungsteilPower section
1717th
Motorengine
1818th
Wellewave
1919th
InkrementalgeberIncremental encoder
2121
SchrittsteuerungStep control
2222
SchrittmotorStepper motor
3131
Motorengine
3232
KurvensegmentCurve segment
4141
LinearmotorLinear motor

Claims (6)

Einrichtung zur dosiergenauen Übertragung von Druckfarbe zwischen einer Duktorwalze und einer ersten Farbwalze, insbesondere beim Offsetdruckprozeß mit einer unabhängig vom Hauptantrieb der Druckmaschine zwischen einem Farbduktor und einer ersten Farbwalze mittels Schwenkmechanismus hin- und herbewegbaren Farbheberwalze, dadurch gekennzeichnet,
daß der Antrieb des Schwenkmechanismuses ein diskontinuierlicher Antrieb ist.
Device for the precise transfer of printing ink between a ductor roller and a first inking roller, in particular in the offset printing process, with an inking roller which can be moved back and forth by means of a pivoting mechanism independently of the main drive of the printing press, characterized in that
that the drive of the swivel mechanism is a discontinuous drive.
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Antrieb ein Linearantrieb, vorzugsweise ein Linearmotor oder Piezoaktuator ist.
Device according to claim 1,
characterized by
that the drive is a linear drive, preferably a linear motor or piezo actuator.
Verfahren zur dosiergenauen übertragung von Druckfarbe zwischen einer Duktorwalze und einer ersten Farbwalze, insbesondere beim Offsetdruckprozeß mit einer unabhängig vom Hauptantrieb der Druckmaschine zwischen einem Farbduktor und einer ersten Farbwalze mittels Schwenkmechanismus hin- und herbewegbaren Farbheberwalze, dadurch gekennzeichnet, - daß die Phasenbeziehung zwischen Farbheberwalze und Plattenzylinder, - die Anzahl der Farbhebertakte pro Maschinenumdrehung und - die Verweildauer am Farbduktor und an der ersten Farbwalze u.s.w. individuell einstellbar ist. Method for the precise transfer of printing ink between a ductor roller and a first inking roller, in particular in the offset printing process with an inking roller which can be moved back and forth by means of a pivoting mechanism independently of the main drive of the printing press, characterized in that - that the phase relationship between the inking roller and plate cylinder, - The number of color lifter cycles per machine revolution and - The dwell time on the ink ductor and on the first inking roller etc. is individually adjustable. Verfahren nach Anspruch 3,
dadurch gekennzeichnet, - daß die Anzahl der Farbhebertakte pro Maschinenumdrehung und - die Verweildauer am Farbduktor und an der ersten Farbwalze während des Druckens unterschiedlich sein kann.
Method according to claim 3,
characterized by - That the number of color lifter cycles per machine revolution and - The dwell time on the ink fountain roller and on the first ink roller during printing can be different.
Verfahren nach Anspruch 3,
dadurch gekennzeichnet, daß nach einer oder mehreren Farbheberbewegungen eine oder mehrere Farbheberbewegungen ausgelassen werden.
Method according to claim 3,
characterized in that after one or more ink lifter movements one or more ink lifter movements are omitted.
Verfahren nach Anspruch 3,
dadurch gekennzeichnet, daß bei Druckabstellung der Antrieb dann stillgesetzt wird, wenn die Farbheberwalze in Kontakt zum Farbreiberwalze steht.
Method according to claim 3,
characterized in that when the print is switched off the drive is stopped when the inking roller is in contact with the inking roller.
EP95115881A 1994-10-10 1995-10-09 Device and method for controlled transfer of ink Expired - Lifetime EP0710557B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4436102 1994-10-10
DE4436102A DE4436102C2 (en) 1994-10-10 1994-10-10 Device for the controlled transfer of printing ink

Publications (2)

Publication Number Publication Date
EP0710557A1 true EP0710557A1 (en) 1996-05-08
EP0710557B1 EP0710557B1 (en) 2000-05-10

Family

ID=6530350

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Application Number Title Priority Date Filing Date
EP95115881A Expired - Lifetime EP0710557B1 (en) 1994-10-10 1995-10-09 Device and method for controlled transfer of ink

Country Status (3)

Country Link
EP (1) EP0710557B1 (en)
JP (1) JP3834082B2 (en)
DE (2) DE4436102C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012218423A1 (en) * 2012-10-10 2014-04-10 Koenig & Bauer Aktiengesellschaft Inking unit of printing unit of printing machine for simultaneous multicolor printing, has electric motor with assigned drive controller in which control algorithm is implemented during rotational torque regular operation phase

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753944C2 (en) * 1997-12-05 2002-06-06 Roland Man Druckmasch Method for controlling a lifter inking unit of a printing press
DE19940532B4 (en) 1998-10-16 2007-02-08 Heidelberger Druckmaschinen Ag Printing machine with a lifting inking unit
DE10056248A1 (en) * 1999-12-06 2001-06-07 Heidelberger Druckmasch Ag Method for controlling the color-content in printing machine color mechanism, involves varying width of color strip on lifter roller, in dependence on a desired value
DE10033638A1 (en) 2000-07-11 2002-01-24 Heidelberger Druckmasch Ag Monitoring device for the sheet feed to a sheet processing machine and method for controlling the build-up of the sheet current
DE10159387A1 (en) * 2001-12-04 2003-06-12 Windmoeller & Hoelscher Packaging printing machine with built-in automatic comparison function between print and target image
DE10259495B4 (en) * 2002-01-26 2010-09-02 Goss International Montataire S.A. Inking unit of a printing press
NL1020103C2 (en) * 2002-03-04 2003-09-05 Skf Ab Control device for ductor roller in printing machine.

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1531691A (en) * 1967-05-25 1968-07-05 Vente De Materiels Pour La Fab Improvements to printing machine ink distribution devices
DE2341510A1 (en) 1972-08-16 1974-04-25 Harris Intertype Corp PRINT PRESS, IN PARTICULAR CONTROL SYSTEM FOR DRIVING SEVERAL PRINTING UNITS OF A PRINTING PRESS
DE3324448C1 (en) 1983-07-07 1985-02-28 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Ink metering device for letterpress and offset printing machines
GB2193926A (en) * 1986-07-24 1988-02-24 Ratby Eng Co Ltd Inking system in a printing machine
DE3935215A1 (en) 1988-10-31 1990-05-03 Polygraph Leipzig ELEVATOR INK FOR HIGH SPEED ROLLER ROTATION PRINTING MACHINES
WO1990013427A1 (en) * 1989-05-08 1990-11-15 Adolph Coors Company Apparatus and method for decorating cans
JPH02299849A (en) * 1989-05-15 1990-12-12 Toshiba Mach Co Ltd Supply of optimal ink quantity
EP0623468A1 (en) * 1993-05-03 1994-11-09 MAN Roland Druckmaschinen AG Ductor inking device and method for controlling ink supply in printing presses
JPH1156067A (en) * 1997-08-25 1999-03-02 Kioritz Corp Portable mower having brake device for movable blade

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274932A (en) * 1961-12-05 1966-09-27 Roger M Caza Ink fountain roller interrupting means
US3688696A (en) * 1970-05-08 1972-09-05 Harris Intertype Corp Motorized ductor roll
US4524692A (en) * 1984-04-18 1985-06-25 Didde Graphic Systems Corporation Electronic ink flow control for printing

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1531691A (en) * 1967-05-25 1968-07-05 Vente De Materiels Pour La Fab Improvements to printing machine ink distribution devices
DE2341510A1 (en) 1972-08-16 1974-04-25 Harris Intertype Corp PRINT PRESS, IN PARTICULAR CONTROL SYSTEM FOR DRIVING SEVERAL PRINTING UNITS OF A PRINTING PRESS
DE3324448C1 (en) 1983-07-07 1985-02-28 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Ink metering device for letterpress and offset printing machines
GB2193926A (en) * 1986-07-24 1988-02-24 Ratby Eng Co Ltd Inking system in a printing machine
DE3935215A1 (en) 1988-10-31 1990-05-03 Polygraph Leipzig ELEVATOR INK FOR HIGH SPEED ROLLER ROTATION PRINTING MACHINES
WO1990013427A1 (en) * 1989-05-08 1990-11-15 Adolph Coors Company Apparatus and method for decorating cans
JPH02299849A (en) * 1989-05-15 1990-12-12 Toshiba Mach Co Ltd Supply of optimal ink quantity
EP0623468A1 (en) * 1993-05-03 1994-11-09 MAN Roland Druckmaschinen AG Ductor inking device and method for controlling ink supply in printing presses
JPH1156067A (en) * 1997-08-25 1999-03-02 Kioritz Corp Portable mower having brake device for movable blade

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 418 (M - 871) 18 September 1989 (1989-09-18) *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 77 (M - 1085) 22 February 1991 (1991-02-22) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012218423A1 (en) * 2012-10-10 2014-04-10 Koenig & Bauer Aktiengesellschaft Inking unit of printing unit of printing machine for simultaneous multicolor printing, has electric motor with assigned drive controller in which control algorithm is implemented during rotational torque regular operation phase
DE102012218423B4 (en) 2012-10-10 2022-02-24 Koenig & Bauer Ag Inking unit of a printing unit, printing unit and method for operating an inking unit

Also Published As

Publication number Publication date
JPH08224859A (en) 1996-09-03
DE4436102C2 (en) 2000-01-05
EP0710557B1 (en) 2000-05-10
JP3834082B2 (en) 2006-10-18
DE4436102A1 (en) 1996-04-11
DE59508309D1 (en) 2000-06-15

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