EP0131103B1 - Inking device for letter press and offset printing machines - Google Patents

Inking device for letter press and offset printing machines Download PDF

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Publication number
EP0131103B1
EP0131103B1 EP84105091A EP84105091A EP0131103B1 EP 0131103 B1 EP0131103 B1 EP 0131103B1 EP 84105091 A EP84105091 A EP 84105091A EP 84105091 A EP84105091 A EP 84105091A EP 0131103 B1 EP0131103 B1 EP 0131103B1
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EP
European Patent Office
Prior art keywords
ink
roller
transfer
discs
metering device
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.)
Expired
Application number
EP84105091A
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German (de)
French (fr)
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EP0131103A2 (en
EP0131103A3 (en
Inventor
Siegfried Schuhmann
Günther Schniggenfittig
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Priority to AT84105091T priority Critical patent/ATE41361T1/en
Publication of EP0131103A2 publication Critical patent/EP0131103A2/en
Publication of EP0131103A3 publication Critical patent/EP0131103A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/14—Applications of messenger or other moving transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/10—Axially segmented ducter rollers

Definitions

  • the invention relates to a color metering device for book and offset printing machines according to the preamble of claim 1 (DE-A-2 924 635).
  • CH-A-169 362 shows an inking unit for rotary printing presses with a plurality of individually adjustable and detachable lifter rollers arranged on a common shaft, the lengths of which correspond to the width of one printing plate.
  • a control disk with several cams of different sizes lying next to one another is arranged on a common shaft so as to be longitudinally displaceable and adjustable.
  • DD-A-104 259 is intended to solve the problem of being able to program predetermined and / or calculated metered amounts of ink in a programmed manner, and to be able to eliminate inking disturbances during production by means of control technology with machine-technical requirements.
  • an ink layer thickness required for each ink-paper combination used is provided by finely adjusting a roller gap between a ductor and a counter roller and / or by a speed difference between these two rollers.
  • the zone discs are only guided on one side.
  • the task of a ink metering device in book and offset printing machines is to solve the problem of reducing the susceptibility to interference from paper components and fountain solution and to enable a color requirement of the printing form that corresponds exactly to the ink supply.
  • an ink metering device which consists of an ink fountain with ink knife and an ink fountain roller with ink lifter for electronic ink zone remote controls for book and offset printing presses and in which several ink lifter wheels are provided which oscillate individually and independently of one another and their width in each case a specific ink zone corresponds.
  • All of the above-mentioned devices divide the lifting roller into a plurality of transfer rollers which are arranged next to one another in the manner of disks and which each have to be held laterally for driving. This means a large gap between the individual ink transfer rollers when the ink transfer rollers are held on both sides. Nevertheless, the size of the lever arm means that the holder is not sufficient to be able to absorb the forces when the ink is transferred from the box roller to a friction roller rotating in particular at a higher peripheral speed. A lateral deflection while touching the ink lifter discs on the grater cannot be avoided with the narrow mounting plates. Since this deflection occurs during each contact with the friction roller, there is a risk of the bracket plate breaking.
  • the invention has for its object to provide an ink metering device that enables ink transfer from the ink fountain roller without empty gaps - between two adjacent lifting discs on the transfer roller, the ink lifting discs are easily replaceable.
  • the peripheral speed of the rollers involved in the ink metering are the same size, i. H. the paint can be dosed on the rollers without slipping.
  • the ink is applied from the ink fountain to the ink fountain roller with a gap width that is fixed on the ink slides.
  • the ink is fed back to the ink fountain after one rotation of the ink fountain roller, if it has not been removed from the ink fountain roller by the ink lift disks. In this way, dosing in the zero quantity range can be carried out particularly simply and precisely. If ink is transferred, the ink lift discs are in contact with the transfer roller. If the ink lifter disc is brought into brief contact with the ink fountain roller, the ink is dosed slightly.
  • the system shows the ink lifter disc on the ink fountain roller decisively about the amount of ink to be transferred during metering. If the ink lifter disc is constantly in contact with the ink fountain roller, then this position corresponds to the maximum ink transfer.
  • the contact time of the ink lifter disc on the ink fountain roller determines the length of the ink ribbon that is transferred to the transfer roller.
  • the paint lifter disc remains in constant contact with the transfer roller, which ensures controlled ink flow.
  • the control of the ink lifter disks can be selected so that the installation times of the ink lifter disks take place in accordance with the ink requirement in the respective area of the printed image. Different lever arrangements are provided according to the selected ink metering device for the defined control of the contact time of the ink lifter disks.
  • the ink is transferred from the slow-running ink transfer roller to the peripheral speed corresponding to the machine speed or the peripheral speed of the plate cylinder by means of suitable lifting devices. This can be done with the usual reciprocating ink lifters, or rotating ink lifters with two sides.
  • the ink lifter discs are close together and have no empty gaps, so that the ink transfer to the transfer roller is optimal and there is no need to rub directly after the ink transfer.
  • the rubbing in the area of the plate cylinder is sufficient for this.
  • Another embodiment provides for a double row of color lifter disks which are mutually offset with respect to one another.
  • the ink fountain roller and the transfer roller are connected to each other with a drive belt.
  • the ink layer thickness is doctored off on a doctor blade to a fixed, fixed layer thickness and transferred by means of the ink lifter disks according to the application time.
  • different lever arrangements are provided for actuating the paint lifting discs.
  • an ink metering device in which an ink fountain 1 and an ink knife 2 is provided on an ink fountain roller 3, the ink knife 2 with a fixed gap width ensures that on the ink fountain roller 3 an equal sized ink film from the ink fountain 1 is supplied.
  • the ink application film on the ink fountain roller 3 can be transferred further to a transfer roller 5 with an ink lifter disc 4.
  • the paint lifter disc 4 is controlled via a lever arrangement 6, at the end of which a support roller 9 is arranged.
  • the control is preferably carried out so that the ink lifter 4 is in constant contact with the transfer roller 5 and only for ink removal. can be brought into contact with the ink fountain roller 3 by lowering the support roller 9.
  • the peripheral speeds of the rollers 3 and 5 are considerably smaller than the peripheral speed of the rollers of the rest of the inking unit.
  • the peripheral speeds of the rollers 3, 5 can be changed.
  • An ink lifter 15 is arranged between the transfer roller 5 and an inking roller 16.
  • the ink lifter 15 can also be designed as a rotating lifter on which two rollers are provided for transferring the ink, in order to accelerate the ink from the slow peripheral speed to the machine peripheral speed of the rollers corresponding to the plate cylinder.
  • the ink transfer is optimal, i. H. there are no empty gaps on the transfer roller 5. Since the ink transfer can be controlled so well in accordance with the ink requirement, the inking roller 16 can also be designed without trituration, i. H. the rubbing directly on the plate cylinder is sufficient with the present ink metering device.
  • the lever arrangement 6 can be designed differently depending on the space conditions of the printing press in the inking unit area.
  • FIG. 2 shows another ink metering device in which the connecting line of the ink fountain roller 3 to the transfer roller 5 has an angle of approximately 45 ° to the horizontal.
  • the rollers 3, 5 are connected to one another by a drive belt 3.5. Between the rollers 3, 5, two rows of ink lifters 4.1, 4.2 are arranged.
  • the color lifter disks 4.1 are set opposite to the opposite color lifter disks 4.2 and are eccentrically mounted.
  • the ink lift discs 4 are rotated by the roller 3 or 5 in rotation.
  • the control of the ink lifter disks 4.1, 4.2 takes place via a lever arrangement 8, 8.1 and articulated rods 13, 14.
  • the articulated rods 14 can be guided well through the spaces between the ink lifter disks 4.1.
  • the ink film is continuously fed to the ink fountain roller to a certain fixed preselected thickness by setting a doctor blade 2.1 and, depending on the contact time of the ink-lifting disks 4.1, 4.2, is transferred to the transfer roller 5. If no ink is removed by the ink-lifting discs 4.1, 4.2, the ink is returned to the ink fountain 1 after one rotation of the ink fountain roller 3.
  • rotating double-sided jacks can also be used can be used in order to bring the color to normal machine speeds.
  • an optimal feed control by the ink lifting discs 4.1, 4.2 from zero to maximum is possible without the transfer roller having 5 empty gaps.
  • FIG. 3 shows a color metering device similar to that shown in FIG. 1.
  • the ink-lifting discs 4 have flat spacer bolts 12 on one side and are mounted on two support rollers 10 which are arranged at both ends of a lever 11.
  • a lever arrangement 7 is fastened to the lever 11 in such a way that the ink regulator disks 4 can be applied to the ink fountain roller 3 for the finest regulation of the ink in the most varied of installation times.
  • the special device with the lever 11 also allows a simple change of the permanent system of the ink lifting discs 4 from the transfer roller 5 to the ink fountain roller 3, for this purpose only the basic setting angle of the lever 11 with the lever arrangement 7 is changed by an adjusting screw.
  • the color lifting discs 4 can be removed quickly and without great effort for repair purposes and cleaning work.

Landscapes

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

Abstract

An ink metering system for letterpress and offset printing machines is provided in which the duct roller, the ink vibrator discs and the transfer roller have a low circumferential speed and wherein the ink is accelerated by suitable vibrator devices to higher speeds corresponding to the circumferential speed of the plate cylinder. The ink vibrator discs are controlled under defined conditions by various lever systems in order that the ink may be transferred controllably and in optimum manner without any empty gaps. The ink vibrator discs can also be readily removed and fitted for repair and cleaning purposes.

Description

Die Erfindung bezieht sich auf eine Farbdosiervorrichtung für Buch- und Offsetdruckmaschinen gemäß dem Oberbegriff des Anspruchs 1 (DE-A-2 924 635).The invention relates to a color metering device for book and offset printing machines according to the preamble of claim 1 (DE-A-2 924 635).

Um eine gute Übertragung der Farbe für einen vorliegenden Druckauftrag erreichen zu können, sind die unterschiedlichsten Lösungen in Form von geteilten Heberwalzen bekannt geworden.In order to be able to achieve a good transfer of the ink for a given print job, a wide variety of solutions in the form of split lifter rollers have become known.

So zeigt die CH-A-169 362 ein Farbwerk für Rotationsdruckmaschinen mit mehreren auf einer gemeinsamen Welle nebeneinander angeordneten, einzeln an- und abstellbaren Heberwalzen, deren Längen je der Breite einer Druckplatte entsprechen. Für jede Heberwalze ist eine Steuerscheibe mit mehreren nebeneinander liegenden, verschieden großen Nocken auf einer gemeinsamen Welle längsverschiebbar und für sich einstellbar angeordnet.For example, CH-A-169 362 shows an inking unit for rotary printing presses with a plurality of individually adjustable and detachable lifter rollers arranged on a common shaft, the lengths of which correspond to the width of one printing plate. For each lifting roller, a control disk with several cams of different sizes lying next to one another is arranged on a common shaft so as to be longitudinally displaceable and adjustable.

Mit dieser Vorrichtung soll es möglich sein, die Farbgebung jeder einzelnen Seite in Bezug auf die Farbstreifenlage während des Betriebes von einer zentralen Stelle aus regeln zu können.With this device it should be possible to be able to regulate the coloring of each individual page in relation to the color strip position during operation from a central point.

In der DD-A-104 259 soll die Aufgabe gelöst werden, vorbestimmte und/oder berechnete dosierte Farbmengen programmiert einstellen zu können, sowie Farbführungsstörungen während des Fortdruckes regeltechnisch mit maschinentechnischen Voraussetzungen beseitigen zu können.DD-A-104 259 is intended to solve the problem of being able to program predetermined and / or calculated metered amounts of ink in a programmed manner, and to be able to eliminate inking disturbances during production by means of control technology with machine-technical requirements.

Dies soll erreicht werden durch eine Vorrichtung zur zonenschraubenlosen und farbmesserlosen Farbdosierung an Druckmaschinen des Offsetdruckes und des Buchdruckes. Zur Erzielung einer vorgegebenen gleichmäßigen Färbung auf dem Druckbogen beim Druck von Volltonflächen wird eine für jede verwendete Farbe-Papier-Kombination erforderliche Farbschichtdicke durch eine Feineinstellung eines Walzenspaltes zwischen einem Duktor und einer Gegenwalze und/oder durch eine Geschwindigkeitsdifferenz zwischen diesen beiden Walzen vorgesehen. Die Zonenscheiben sind lediglich einseitig.gehaltert geführt.This is to be achieved by means of a device for zone screwless and ink knife-free ink metering on printing presses in offset printing and letterpress printing. In order to achieve a predetermined uniform coloration on the printing sheet when printing solid areas, an ink layer thickness required for each ink-paper combination used is provided by finely adjusting a roller gap between a ductor and a counter roller and / or by a speed difference between these two rollers. The zone discs are only guided on one side.

In der DE-A-2 924 635 soll bei einer Farbdosiervorrichtung in Buch- und Offsetdruckmaschinen die Aufgabe gelöst werden, die Störanfälligkeit gegen Papierbestandteile und Feuchtwasser zu verringern und einen Farbbedarf der Druckform genau entsprechende Farbzuführung zu ermöglichen.In DE-A-2 924 635, the task of a ink metering device in book and offset printing machines is to solve the problem of reducing the susceptibility to interference from paper components and fountain solution and to enable a color requirement of the printing form that corresponds exactly to the ink supply.

Erreicht werden soll dies durch eine Farbdosiervorrichtung die aus einem Farbkasten mit Farbmesser und einer Farbkastenwalze mit Farbheber für elektronische Farbzonen-Fernsteuerungen bei Buch- und Offsetdruckmaschinen besteht und bei der mehrere Farbheberräder vorgesehen sind, die einzeln und unabhängig voneinander oszillieren und deren Breite jeweils einer bestimmten Farbzone entspricht.This is to be achieved by an ink metering device which consists of an ink fountain with ink knife and an ink fountain roller with ink lifter for electronic ink zone remote controls for book and offset printing presses and in which several ink lifter wheels are provided which oscillate individually and independently of one another and their width in each case a specific ink zone corresponds.

All diese genannten Vorrichtungen teilen die Heberwalze in mehrere scheibenartig nebeneinander angeordnete Übertragungsrollen, die jeweils seitlich zum Antreiben gehaltert werden müssen. Dies bedeutet jeweils einen großen Spalt zwischen den einzelnen Farbübertragungsrollen, wenn die Farbübertragungsrollen beidseitig gehaltert werden. Trotzdem ist die Halterung bei der Größe des Hebelarmes nicht ausreichend, um die Kräfte beim Übertragen der Farbe von der Kastenwalze auf eine insbesondere mit höherer Umfangsgeschwindigkeit rotierende Reiberwalze aufnehmen zu können. Eine seitliche Auslenkung während der Berührung der Farbheberscheiben am Reiber ist damit bei den schmalen Halterungsblechen nicht zu vermeiden. Da diese Auslenkung während jeder Berührung mit der Reiberwalze auftritt, ist eine Dauerbruchgefahr des Halterungsbleches gegeben. Über die Steuerung der Farbheberscheibenräder ist lediglich ausgesagt, sie kann je nach Bedarf beliebig vorgenommen werden, aber nicht mit welchen technischen Mitteln sie durchgeführt werden. Weiterhin muß der Geschwindigkeitsunterschied zwischen der Kastenwalze und der Reiberwalze bei jeder Berührung ausgeglichen werden, was zu großen Abriebserscheinungen an den Übertragungsrollen führt.All of the above-mentioned devices divide the lifting roller into a plurality of transfer rollers which are arranged next to one another in the manner of disks and which each have to be held laterally for driving. This means a large gap between the individual ink transfer rollers when the ink transfer rollers are held on both sides. Nevertheless, the size of the lever arm means that the holder is not sufficient to be able to absorb the forces when the ink is transferred from the box roller to a friction roller rotating in particular at a higher peripheral speed. A lateral deflection while touching the ink lifter discs on the grater cannot be avoided with the narrow mounting plates. Since this deflection occurs during each contact with the friction roller, there is a risk of the bracket plate breaking. It is only stated about the control of the paint regulator disc wheels, it can be done as required, but not with which technical means they are carried out. Furthermore, the speed difference between the box roller and the friction roller must be compensated for with each touch, which leads to large signs of wear on the transfer rollers.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Farbdosiervorrichtung anzugeben, die eine Farbübertragung von der Farbkastenwalze ohne Leerspalte -zwischen zwei anliegenden Heberscheiben auf die Übertragwalze ermöglicht, wobei die Farbheberscheiben leicht auswechselbar sind.Based on this prior art, the invention has for its object to provide an ink metering device that enables ink transfer from the ink fountain roller without empty gaps - between two adjacent lifting discs on the transfer roller, the ink lifting discs are easily replaceable.

Die Lösung der gestellten Aufgabe wird bei einer Farbdosiervorrichtung der eingangs genannten Art durch die Merkmale des kennzeichnenden Teiles des Anspruchs 1 erreicht.The solution of the problem is achieved in a color metering device of the type mentioned by the features of the characterizing part of claim 1.

Die Umfangsgeschwindigkeit der Walzen, die an der Farbdosierung beteiligt sind, sind gleich groß, d. h. die Farbe kann ohne Schlupf an den Walzen dosiert werden. Die Farbe wird vom Farbkasten mit einer fest an den Farbschiebern eingestellten Spaltbreite auf die Farbkastenwalze aufgetragen. Die Farbe wird nach einer Umdrehung der Farbkastenwalze dem Farbkasten wieder zugeführt, wenn sie nicht durch die Farbheberscheiben von der Farbkastenwalze abgenommen worden ist. Auf diese Art und Weise kann eine Dosierung im Null-Mengenbereich besonders einfach und präzise vorgenommen werden. Wird Farbe übertragen, so stehen die Farbheberscheiben in Kontakt mit der Übertragwalze. Wird die Farbheberscheibe in kurzzeitige Anlage mit der Farbkastenwalze gebracht, dann erfolgt eine geringe Dosierung der Farbe.The peripheral speed of the rollers involved in the ink metering are the same size, i. H. the paint can be dosed on the rollers without slipping. The ink is applied from the ink fountain to the ink fountain roller with a gap width that is fixed on the ink slides. The ink is fed back to the ink fountain after one rotation of the ink fountain roller, if it has not been removed from the ink fountain roller by the ink lift disks. In this way, dosing in the zero quantity range can be carried out particularly simply and precisely. If ink is transferred, the ink lift discs are in contact with the transfer roller. If the ink lifter disc is brought into brief contact with the ink fountain roller, the ink is dosed slightly.

Die Anlage zeigt der Farbheberscheibe an der Farbkastenwalze entscheidend über die Menge der zu übertragenden Farbe während der Dosierung. Liegt die Farbheberscheibe ständig an der Farbkastenwalze an, dann entspricht diese Position der maximalen Farbübertragung. Die Anlagezeit der Farbheberscheibe an der Farbkastenwalze entscheidet über die Farbstreifenlänge des übertragenen Farbstreifens auf die Übertragwalze. Vorzugsweise bleibt die Farbheberscheibe in ständigem Kontakt mit der Übertragwalze, wodurch eine kontrollierte Farbführung gewährleistet ist. Hierzu kann die Ansteuerung der Farbheberscheiben so gewählt werden, daß die Anlagezeiten der Farbheberscheiben entsprechend dem Farbbedarf im jeweiligen Bereich des Druckbildes erfolgt. Für die definierte Ansteuerung der Anlagezeit der Farbheberscheiben sind unterschiedliche Hebelanordnungen entsprechend der gewählten Farbdosiervorrichtung vorgesehen.The system shows the ink lifter disc on the ink fountain roller decisively about the amount of ink to be transferred during metering. If the ink lifter disc is constantly in contact with the ink fountain roller, then this position corresponds to the maximum ink transfer. The contact time of the ink lifter disc on the ink fountain roller determines the length of the ink ribbon that is transferred to the transfer roller. Preferably, the paint lifter disc remains in constant contact with the transfer roller, which ensures controlled ink flow. For this purpose, the control of the ink lifter disks can be selected so that the installation times of the ink lifter disks take place in accordance with the ink requirement in the respective area of the printed image. Different lever arrangements are provided according to the selected ink metering device for the defined control of the contact time of the ink lifter disks.

Von der langsam laufenden Farbübertragwalze wird die Farbe mittels geeigneter Hebervorrichtungen auf die Umfangsgeschwindigkeit entsprechend der Maschinendrehzahl bzw. der Umfangsgeschwindigkeit des Plattenzylinders übertragen. Hierbei können übliche hin- und herschwingende Farbheber, oder sich drehende zweiseitig bestückte Farbheber zur Anwendung kommen.The ink is transferred from the slow-running ink transfer roller to the peripheral speed corresponding to the machine speed or the peripheral speed of the plate cylinder by means of suitable lifting devices. This can be done with the usual reciprocating ink lifters, or rotating ink lifters with two sides.

Die Farbheberscheiben liegen dicht nebeneinander und weisen keine Leerspalte auf, so daß die Farbübertragung zur Übertragwalze optimal ist und auf eine Verreibung direkt nach der Farbübertragung verzichtet werden kann. Die Verreibung im Bereich des Plattenzylinders ist hierzu ausreichend.The ink lifter discs are close together and have no empty gaps, so that the ink transfer to the transfer roller is optimal and there is no need to rub directly after the ink transfer. The rubbing in the area of the plate cylinder is sufficient for this.

Eine andere Ausführung sieht eine -doppelte Reihe von Farbheberscheiben vor, die gegenseitig auf Lücke versetzt zueinander angeordnet sind. Bei dieser Ausführung sind die Farbkastenwalze und die Übertragwalze mit einem Antriebsriemen miteinander verbunden. Auch bei dieser Ausführung wird die Farbschichtdicke an einem Rakel auf eine fest fixierte Schichtdicke abgerakelt und mittels der Farbheberscheiben entsprechend der Anlagezeit übertragen. Zum Ansteuern der Farbheberscheiben sind wie oben genannt unterschiedliche Hebelanordnungen vorgesehen.Another embodiment provides for a double row of color lifter disks which are mutually offset with respect to one another. In this version, the ink fountain roller and the transfer roller are connected to each other with a drive belt. In this version, too, the ink layer thickness is doctored off on a doctor blade to a fixed, fixed layer thickness and transferred by means of the ink lifter disks according to the application time. As mentioned above, different lever arrangements are provided for actuating the paint lifting discs.

Weitere Vorteile gehen aus den Unteransprüchen und der folgenden Beschreibung in Verbindung mit den schematisch im Schnitt gezeigten Ausführungsbeispielen hervor.Further advantages emerge from the subclaims and the following description in conjunction with the exemplary embodiments shown schematically in section.

Es zeigt :

  • Fig. 1 eine Farbdosiervorrichtung mit lose zwischen der Farbkastenwalze und der Übertragwalze liegenden Farbheberscheiben,
  • Fig. 2 eine Ausführung mit zwei gegenüberliegende Reihen von Farbheberscheiben zwischen der Farbkastenwalze und der Übertragwalze,
  • Fig. 3 eine ähnliche Ausführung wie in Fig. 1 bei der die Farbheberscheiben mit einer Hebelanordnung an der zwei Rollen befestigt sind, angesteuert wird,
  • Fig. 4 eine Draufsicht der Vorrichtung entsprechend Fig. 3.
It shows :
  • 1 is an ink metering device with ink lifting disks lying loosely between the ink fountain roller and the transfer roller,
  • 2 shows an embodiment with two opposite rows of ink lifting discs between the ink fountain roller and the transfer roller,
  • 3 shows a similar design as in FIG. 1, in which the paint lifting disks are attached to a lever arrangement on which two rollers are driven,
  • 4 is a top view of the device corresponding to FIG. 3.

In der Fig. 1 ist eine Farbdosiervorrichtung gezeigt, bei der ein Farbkasten 1 und ein Farbmesser 2 an einer Farbkastenwalze 3 vorgesehen ist, wobei das Farbmesser 2 mit einer fest eingestellten Spaltbreite dafür sorgt, daß auf der Farbkastenwalze 3 ein gleich großer definierter Farbauftragsfilm vom Farbkasten 1 zugeführt wird. Der Farbauftragsfilm auf der Farbkastenwalze 3 kann mit einer Farbheberscheibe 4 zu einer Übertragwalze 5 weiter übertragen werden. Je nachdem wie lange die Farbheberscheibe 4 an der Farbkastenwalze 3 anliegt, wird mehr oder weniger Farbe an die Übertragwalze übertragen. Die Farbheberscheibe 4 wird über eine Hebelanordnung 6, an dessen Ende eine Stützrolle 9 angeordnet ist, angesteuert. Die Ansteuerung erfolgt vorzugsweise so, daß die Farbheberscheibe 4 in dauerndem Kontakt mit der Übertragwalze 5 steht und nur zur Farbabnahme . durch Senken der Stützrolle 9 in Kontakt mit der Farbkastenwalze 3 bringbar ist. Die Umfangsgeschwindigkeiten der Walzen 3 und 5 sind um einen beträchtlichen Teil kleiner als die Umfangsgeschwindigkeit der Walzen des übrigen Farbwerks. Die Umfangsgeschwindigkeiten der Walzen 3, 5 sind veränderbar. Zwischen der Übßrtragwalze 5 und einer Farbwerkwalze 16 ist ein Farbheber 15 angeordnet. Der Farbheber 15 kann auch als rotierender Heber, an dem zwei Walzen zum Übertragen der Farbe vorgesehen sind, ausgelegt sein, um die Farbe von der langsamen Umfangsgeschwindigkeit auf die Maschinenumfangsgeschwindigkeit der Walzen entsprechend des Plattenzylinders zu beschleunigen.In Fig. 1, an ink metering device is shown, in which an ink fountain 1 and an ink knife 2 is provided on an ink fountain roller 3, the ink knife 2 with a fixed gap width ensures that on the ink fountain roller 3 an equal sized ink film from the ink fountain 1 is supplied. The ink application film on the ink fountain roller 3 can be transferred further to a transfer roller 5 with an ink lifter disc 4. Depending on how long the ink lifter disc 4 rests on the ink fountain roller 3, more or less ink is transferred to the transfer roller. The paint lifter disc 4 is controlled via a lever arrangement 6, at the end of which a support roller 9 is arranged. The control is preferably carried out so that the ink lifter 4 is in constant contact with the transfer roller 5 and only for ink removal. can be brought into contact with the ink fountain roller 3 by lowering the support roller 9. The peripheral speeds of the rollers 3 and 5 are considerably smaller than the peripheral speed of the rollers of the rest of the inking unit. The peripheral speeds of the rollers 3, 5 can be changed. An ink lifter 15 is arranged between the transfer roller 5 and an inking roller 16. The ink lifter 15 can also be designed as a rotating lifter on which two rollers are provided for transferring the ink, in order to accelerate the ink from the slow peripheral speed to the machine peripheral speed of the rollers corresponding to the plate cylinder.

Da die Farbheberscheiben 4 dicht an dicht liegen, ist die Farbübertragung optimal, d. h. es sind keine Leerspalten auf der übertragwalze 5 vorhanden. Da die Farbübertragung entsprechend dem Farbbedarf so gut ansteuerbar ist, kann die Farbwerkwalze 16 auch ohne Verreibung ausgelegt sein, d. h. die Verreibung direkt am Plattenzylinder ist ausreichend bei der vorliegenden Farbdosiervorrichtung. Die Hebelanordnung 6 kann je nach Platzbedingungen der Druckmaschine im Farbwerkbereich unterschiedlich ausgeführt werden.Since the ink lifter discs 4 lie close together, the ink transfer is optimal, i. H. there are no empty gaps on the transfer roller 5. Since the ink transfer can be controlled so well in accordance with the ink requirement, the inking roller 16 can also be designed without trituration, i. H. the rubbing directly on the plate cylinder is sufficient with the present ink metering device. The lever arrangement 6 can be designed differently depending on the space conditions of the printing press in the inking unit area.

In der Fig. 2 ist eine andere Farbdosiervorrichtung dargestellt, bei der die Verbindungslinie der Farbkastenwalze 3 zur Übertragwalze 5 einen Winkel von ca. 45° zur Waagerechten aufweist. Die Walzen 3, 5 sind mit einem Antriebsriemen 3.5 miteinander verbunden. Zwischen den Walzen 3, 5 sind zwei Reihen von Farbheberscheiben 4.1, 4.2 angeordnet. Die Farbheberscheiben 4.1 stehen zu den gegenüberliegenden Farbheberscheiben 4.2 auf Lücke gesetzt gegenüber und sind exzentrisch gelagert. Die Farbheberscheiben 4 werden durch Friktion von der Walze 3 oder 5 in Umdrehung versetzt. Die Ansteuerung der Farbheberscheiben 4.1, 4.2 erfolgt über eine Hebelanordnung 8, 8.1 und Gelenkstangen 13, 14. Die Gelenkstangen 14 können gut durch die Freiräume zwischen den Farbheberscheiben 4.1 hindurch geführt werden.2 shows another ink metering device in which the connecting line of the ink fountain roller 3 to the transfer roller 5 has an angle of approximately 45 ° to the horizontal. The rollers 3, 5 are connected to one another by a drive belt 3.5. Between the rollers 3, 5, two rows of ink lifters 4.1, 4.2 are arranged. The color lifter disks 4.1 are set opposite to the opposite color lifter disks 4.2 and are eccentrically mounted. The ink lift discs 4 are rotated by the roller 3 or 5 in rotation. The control of the ink lifter disks 4.1, 4.2 takes place via a lever arrangement 8, 8.1 and articulated rods 13, 14. The articulated rods 14 can be guided well through the spaces between the ink lifter disks 4.1.

Auch bei dieser Lösung wird der Farbfilm kontinuierlich auf eine bestimmte fest vorgewählte Stärke der Farbkastenwalze durch Einstellung eines Rakels 2.1 zugeführt und je nach Anlagezeit der Farbheberscheiben 4.1, 4.2 auf die Übertragwalze 5 übertragen. Wird keine Farbe durch die Farbheberscheiben 4.1, 4.2 abgenommen, dann wird die Farbe nach einer Umdrehung der Farbkastenwalze 3 wieder in den Farbkasten 1 zurückgeführt. Auch bei dieser Farbdosiervorrichtung können außer den bekannten hin- und herpendelnden Hebern sich drehende doppelseitige Heber verwendet werden, um die Farbe auf maschinenübliche Geschwindigkeiten bringen zu können. Weiterhin ist auch bei dieser Lösung eine optimale Zuführungsregelung durch die Farbheberscheiben 4.1, 4.2 von Null bis Maximal möglich, ohne daß die Übertragwalze 5 Leerspalte aufweist.In this solution, too, the ink film is continuously fed to the ink fountain roller to a certain fixed preselected thickness by setting a doctor blade 2.1 and, depending on the contact time of the ink-lifting disks 4.1, 4.2, is transferred to the transfer roller 5. If no ink is removed by the ink-lifting discs 4.1, 4.2, the ink is returned to the ink fountain 1 after one rotation of the ink fountain roller 3. In this color metering device, in addition to the known reciprocating jacks, rotating double-sided jacks can also be used can be used in order to bring the color to normal machine speeds. Furthermore, in this solution as well, an optimal feed control by the ink lifting discs 4.1, 4.2 from zero to maximum is possible without the transfer roller having 5 empty gaps.

In der Fig. 3 ist eine ähnliche Farbdosiervorrichtung wie in der Fig. 1 gezeigt. Die Farbheberscheiben 4 weisen einseitig flache Distanzbolzen 12 auf und sind auf zwei Stützrollen 10 gelagert, die an beiden Enden eines Hebels 11 angeordnet sind. Am Hebel 11 ist eine Hebelanordnung 7 so befestigt, daß die Farbheberscheiben 4 zur Feinstregulierung der Farbe in unterschiedlichste Anlagezeiten an die Farbkastenwalze 3 angelegt werden kann. Die spezielle Vorrichtung mit dem Hebel 11 läßt auch eine einfache Umänderung der dauernden Anlage der Farbheberscheiben 4 von der Übertragwalze 5 zur Farbkastenwalze 3 zu, hierzu wird lediglich der Grundeinstellwinkel des Hebels 11 mit der Hebelanordnung 7 durch eine Einstellschraube verändert. Die Farbheberscheiben 4 können für Reparaturzwecke und Reinigungsarbeiten schnell und ohne großen Aufwand entfernt werden.FIG. 3 shows a color metering device similar to that shown in FIG. 1. The ink-lifting discs 4 have flat spacer bolts 12 on one side and are mounted on two support rollers 10 which are arranged at both ends of a lever 11. A lever arrangement 7 is fastened to the lever 11 in such a way that the ink regulator disks 4 can be applied to the ink fountain roller 3 for the finest regulation of the ink in the most varied of installation times. The special device with the lever 11 also allows a simple change of the permanent system of the ink lifting discs 4 from the transfer roller 5 to the ink fountain roller 3, for this purpose only the basic setting angle of the lever 11 with the lever arrangement 7 is changed by an adjusting screw. The color lifting discs 4 can be removed quickly and without great effort for repair purposes and cleaning work.

Claims (8)

1. Ink metering device on letterpress and offset printing presses consisting of an ink fountain (1) with ink blade (2) (doctor) and an ink fountain roller (3) with an ink transfer roll (4) wherein the ink transfer roll (4) consists of several ink transfer discs which oscillate individually and independently one of another between the ink fountain roller (3) and a transfer roller (5) and the width of which corresponds in each case to a given inking zone, characterised in that the ink fountain roller (3) and the transfer roller (5) are driven with the same peripheral speed which is reduced with respect to the other inking unit rollers (15, 16), that the ink transfer discs (4, 4.1), which are in continuous contact either with the transfer roller (5) or with the ink fountain roller (3), are driven thereby by frietional contact and that the ink transfer discs (4, 4.1) can be brought by means of lever arrangements (6, 7, 8) in defined fashion into contact either with the ink fountain roller (3) or the transfer roller (5) and can be thrown off again therefrom or correspondingly vice versa.
2. Ink metering device according to Claim 1, characterised in that the ink transfer discs (4) are arranged freely between the ink fountain roller (3) and the transfer roller (5) and that the ink transfer discs (4) can be changed from their rest position by means of the lever arrangement (6), to the end of which a support roller (9) is fixed.
3. Ink metering device according to Claim 1 and 2, characterised in that the ink transfer discs (4) can be swung on and off by means of two support rolls (10) which are arranged on a pivotable lever (11).
4. Ink metering device according to Claim 1, 2 and 3, characterised in that the ink fountain roller (3) and the transfer roller (5) can be driven at different speeds the same as one another but adjustable overall.
5. Ink metering device according to Claim 1, characterised in that the ink fountain roller (3) and transfer roller (5) are connected by a drive belt (3.5).
6. Ink metering device according to Claim 1 and 5, characterised in that between the ink fountain roller (3) and transfer roller (5) two rows of ink transfer discs (4.1, 4.2) are arranged and that the ink transfer discs (4.1, 4.2) are mounted eccentrically.
7. Ink metering device according to Claim 1, 5 and 6, characterised in that the ink transfer discs (4.1, 4.2) are arranged staggered with gaps between one another.
8. Ink metering device according to Claim 1, 5, 6 and 7, characterised in that the ink transfer discs (4.1, 4.2) can be controlled via the lever arrangement (8, 8.2) by means of link rods (13, 14).
EP84105091A 1983-07-07 1984-05-05 Inking device for letter press and offset printing machines Expired EP0131103B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105091T ATE41361T1 (en) 1983-07-07 1984-05-05 INK DOSING DEVICE ON BOOK AND OFFSET PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3324445A DE3324445C2 (en) 1983-07-07 1983-07-07 Ink metering device on letterpress and offset printing machines
DE3324445 1983-07-07

Publications (3)

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EP0131103A2 EP0131103A2 (en) 1985-01-16
EP0131103A3 EP0131103A3 (en) 1986-07-30
EP0131103B1 true EP0131103B1 (en) 1989-03-15

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EP84105091A Expired EP0131103B1 (en) 1983-07-07 1984-05-05 Inking device for letter press and offset printing machines

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US (1) US4559874A (en)
EP (1) EP0131103B1 (en)
JP (1) JPS6036168A (en)
AT (1) ATE41361T1 (en)
DE (1) DE3324445C2 (en)

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DE3866313D1 (en) * 1987-03-03 1992-01-02 Concepta Print Ag PAINTWORK WHICH PAINT CAN BE CONTROLLED.
US4798138A (en) * 1988-01-12 1989-01-17 Brodie George R Liquid distribution system
CA2005045A1 (en) * 1989-05-08 1990-11-08 Frank L. Shriver Apparatus and method for decorating cans
AU632956B2 (en) * 1990-08-31 1993-01-14 Goss Graphic Systems, Inc. Keyless printing system for keyless lithographic printing
US5140900A (en) * 1991-06-24 1992-08-25 B. Bunch Company, Inc. Ink distribution assembly
DE10000903A1 (en) * 1999-02-05 2000-08-10 Heidelberger Druckmasch Ag Operating printing machine involves driving inking mechanism roller at difference speed and different relative speed wrt. form cylinder speed depending on ink mechanism operating states
EP2998117A1 (en) 2014-09-19 2016-03-23 KBA-NotaSys SA Inking apparatus of a printing press, printing press comprising the same and method of producing a vibrator roller

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CH169362A (en) * 1932-07-29 1934-05-31 Maschf Augsburg Nuernberg Ag Inking unit for rotary printing machines.
DE606613C (en) * 1933-07-28 1934-12-06 Gerhard Wulf Device for printing fabric or paper webs
US2788741A (en) * 1953-12-02 1957-04-16 Levey Fred K H Co Inc Printing press accessory
US3037449A (en) * 1958-01-21 1962-06-05 Carl Allers Ets Ductor roller for use in distribution roller systems for liquid and semiliquid substances
US3261287A (en) * 1964-02-03 1966-07-19 John C Motter Printing Press C Liquid distributing apparatus
US3417692A (en) * 1967-03-22 1968-12-24 John C Motter Printing Press C Double ductor
US3552311A (en) * 1968-07-12 1971-01-05 Nello J Petri Dampening system for a lithographic press
DD104259A1 (en) * 1973-05-08 1974-03-05
DE2924635A1 (en) * 1979-06-19 1981-01-15 Gerhard Werner Colour applicator for offset printing machine - has electronic remote control coupled to individual oscillating pick-up wheels
JPS58990B2 (en) * 1980-11-07 1983-01-08 リョービ株式会社 Automatic ink and water adjustment device for printing presses
SE428544B (en) * 1981-11-06 1983-07-11 Wifag Maschf HOPE Rolling device
DD203704A1 (en) * 1981-07-17 1983-11-02 Matthias Schuetze DEVICE FOR COLOR DOSING IN COLOR WORKS OF PRINTING MACHINES
FR2516863B1 (en) * 1981-11-25 1985-11-15 Marinoni METHOD AND DEVICE FOR TRANSFERRING INK BETWEEN AN INK ROLL AND A FIRST INK ROLL FOR PRINTING PRESS
DD203016A1 (en) * 1981-11-30 1983-10-12 Hans Johne COLOR WORK FOR PRINTING MACHINES

Also Published As

Publication number Publication date
EP0131103A2 (en) 1985-01-16
US4559874A (en) 1985-12-24
EP0131103A3 (en) 1986-07-30
JPS6036168A (en) 1985-02-25
ATE41361T1 (en) 1989-04-15
DE3324445A1 (en) 1985-01-24
DE3324445C2 (en) 1985-09-12

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