EP0098514B1 - Inking device - Google Patents

Inking device Download PDF

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Publication number
EP0098514B1
EP0098514B1 EP83106317A EP83106317A EP0098514B1 EP 0098514 B1 EP0098514 B1 EP 0098514B1 EP 83106317 A EP83106317 A EP 83106317A EP 83106317 A EP83106317 A EP 83106317A EP 0098514 B1 EP0098514 B1 EP 0098514B1
Authority
EP
European Patent Office
Prior art keywords
ink
roller
rollers
belts
printing
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
EP83106317A
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German (de)
French (fr)
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EP0098514A3 (en
EP0098514A2 (en
Inventor
Claus Dieter Barrois
Philipp Andreas Dieterich
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Priority to AT83106317T priority Critical patent/ATE30401T1/en
Publication of EP0098514A2 publication Critical patent/EP0098514A2/en
Publication of EP0098514A3 publication Critical patent/EP0098514A3/en
Application granted granted Critical
Publication of EP0098514B1 publication Critical patent/EP0098514B1/en
Expired legal-status Critical Current

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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
    • B41F31/16—Continuous, e.g. endless, band apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/33—Ink transfer employing one or more belts

Definitions

  • the invention relates to a device for transporting a liquid medium, in particular printing ink, on a jacket of a roller according to the preamble of claim 1.
  • DE-B-30 14 144 has disclosed such a device for transporting printing ink on a jacket of an inking roller of a printing press in the longitudinal axis direction thereof.
  • An endless belt is used that runs over several deflection means.
  • the belt has an oleophilic layer on its outer layer.
  • a disadvantage of this device is that additional deflecting rods must be used for the belt, so that undesirable frictional heat is generated which influences the viscosity of the printing ink.
  • additional inking unit rollers must be arranged in order to offset the printing ink in the longitudinal axis direction of the inking unit rollers.
  • the invention has for its object to provide a device with which it is possible to transport a liquid medium on rollers in their longitudinal axis direction without the roller needing to perform a traversing movement.
  • a liquid medium e.g. Printing ink, fountain solution, coating liquid, etc.
  • a roller crosswise that is in the longitudinal direction of the roller, without requiring a traversing movement.
  • the object of the invention can, for. B. can advantageously be used in an inking unit of a rotary printing press in order to significantly reduce the degree of non-uniformity of an ink layer thickness relief over the length of an inking roller without having to use a doctor blade.
  • the device according to the invention also promotes the evaporation of the dampening liquid in the printing ink after printing, so that the ink film returning to the inking unit is largely free of dampening agent. Due to the large number of splitting points, the ink returning to the inking unit is kept supple.
  • Another advantage is the use of the device according to the invention on inking rollers to prevent the known “printing ink splashing”; Because in inking units of offset rotary printing presses with alcohol dampening units, so-called “ink spraying” often occurs when using emulsifying-friendly printing inks, which cannot be dispensed with because of other advantages. Due to the acting centripetal force, small lumps of a printing ink / fountain solution emulsion detach from inking unit rollers and contaminate the paper web and / or printing machine parts. Such “ink spraying” is more common when printing on paper webs whose width is smaller than the maximum processable paper web width, and mainly when so-called “bleed images” are printed, i. H.
  • An inking unit of a rotary printing machine dyes a rubber-coated inking roller 1 in a known manner, this in turn a printing plate 2, z. B. an offset printing plate, which is clamped on a forme cylinder 3.
  • the printing plate 2 transfers ink to a blanket 4 of a blanket cylinder 6.
  • Ink application roller 1, forme cylinder 3 and blanket cylinder 6 preferably have the same diameter and are driven in a known manner at the same peripheral speed.
  • a dampening system 7 the inking roller 1 or the printing plate 2 is moistened.
  • the inking roller 1 receives its printing ink from a preferably ink fountain screwless ink fountain 8.
  • Both an elevator and a film inking unit - as shown in the exemplary embodiment in FIG. 1 - can be used to produce a uniform ink film.
  • the operation of film inking units is general, e.g. B. from DE-PS 901 057, known, so that its detailed description can be omitted here.
  • the printing ink passes from the ink fountain 8 via a speed-controllable duct roller 9, intermediate rollers 11, 12, 13, 14, 16, onto a first transfer roller 18 and a second transfer roller 19. Both transfer rollers 18, 19 are in contact with the ink application roller 1.
  • Ductor roller 9, intermediate rollers 11 to 16 and transfer rollers 18, 19 have a significantly smaller diameter than the inking roller 1, the rollers 11 to 16, 18, 19 having the same peripheral speed as the inking roller 1.
  • Rollers 14, 18, 19 are as oscillating Ink distribution rollers executed.
  • an ink-friendly (oleophilic) hard coat such as. B. ceramic or copper
  • each row 30, 35 of belts 27 consists of a plurality, for. B. 20, side by side - directly on or at a distance from each other - arranged belts 27.
  • the belts 27 are e.g. 40 mm wide. They consist - or at least their outside 36 consists - of an ink-friendly layer 37, e.g. Rubber.
  • One or more driven drive rollers 28 are mounted in the side frames (not shown). They each serve to drive the belts 27 and are operated either via a main drive of the machine or a separate drive, e.g. driven a speed-controlled electric motor.
  • a carrier 29 is arranged between the side frames and screwed to them.
  • a plurality of axes 32 are welded onto the carrier 29 at a distance “b” from one another, one above the other and next to one another.
  • a deflection roller 33 and an ink transfer roller 34 are each rotatably mounted on the axes 32.
  • Each deflection roller 33 is non-positively connected to the drive roller 28 by means of a belt 27.
  • Rotation axes 15 and 17 of the deflection rollers 33 and ink transfer rollers 34 run parallel.
  • the axes of rotation 20, 15, 17 of the driven rollers 28 and deflection rollers 33 or ink transfer rollers 34 are arranged on mutually parallel planes.
  • the vertical planes passing through the rotation axes 15, 17 of deflection rollers 32 or ink transfer rollers 34 each intersect a vertical plane extending along the rotation axis 20 at an angle of 90 °.
  • An ink transfer roller 34 presses on directly adjacent belts 27. As a result, the belts 27 are pressed against the deflection rollers 33 assigned to them.
  • the ink transfer roller 34 is with an oleophilic coat - z. B. made of rubber - and thus transfers ink from a belt 27 to the directly adjacent belt 27th
  • the ink transfer roller 34 can also be arranged below two deflection rollers 33. In this case, two adjacent belts 27 partially wrap around the ink transfer roller 34. This will e.g. from the ink relief compensation roller 23 by means of a first belt 27 printing ink or an ink moisture emulsion to the ink transfer roller 34 and from there to the adjacent belt 27 and from there to the ink relief compensation roller 23 - i.e. offset in its longitudinal axis direction - and so on.
  • endless ink transport belts 38 - also with their own drive - can be provided in the form of a horizontal belt.
  • This ink transport belt 38 rests on a plurality of (vertical) belts 27 arranged next to one another, specifically at points at which the belts 27 wrap around the deflection rollers 33. From these (horizontal) ink transport belts 38, printing ink is then transported from one belt 27 to the next one, etc.
  • Pressure rollers 39 guide the ink transport belt 38. They also press it against the belt 27 at the same time.
  • the pressure rollers 39 are rotatably mounted on axes 32.
  • an ink thickness compensation in the longitudinal axis direction of an ink leading inking roller 23, 24, 26 can be carried out.
  • the ink thickness compensation takes place from places with excess ink to places with lack of printing ink, so that an equally thick ink film forms along the roller length.
  • the belts 27 are pressed by the drive rollers 28 against the ink relief compensation rollers 23, 24, 26. Each of their jackets is in contact with one or more inking rollers.
  • Deflection rollers 33 arranged next to one another can be driven in the same or different sense of rotation, depending on how the belts 27 are placed on the deflection rollers 33. If the directions of rotation of two adjacent deflection rollers 33 are the same, then only one or an odd number of ink transfer rollers 34 - each of which is in contact with the adjacent one - are arranged between two adjacent deflection rollers 33, whereby if only one ink transfer roller 34 is arranged, these with both deflection rollers 33 is in contact via the belt 27. If the directions of rotation of two adjacent deflection rollers 33 are not the same, two or an even number of ink transfer rollers 34 are arranged between two adjacent deflection rollers 33.
  • the entire width of an inking roller 41 is not covered with belts 27, but only a few are arranged, specifically at the locations at which the ink / dampening agent mixture accumulates. It may be the case that two or three belts 27 are provided at each end of the inking roller 41 (see FIG. 4).
  • a slidable and fixable carriage (not shown) is provided on the carrier 29 on which the deflection rollers 33 and the ink transfer rollers 34 are attached.
  • the device according to the invention can advantageously also be used with dampening units 7.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Ink Jet (AREA)
  • Screen Printers (AREA)

Abstract

An inking unit for use in a rotary printing machine is disclosed. A plurality of endless belts are placed side by side along the surface of a driving roller. These belts transport a liquid medium such as printing ink or damping fluid along the surface of a covering of a cylinder in the direction of the longitudinal axis of the cylinder. The liquid medium is transported by the belts from a position of excess ink to a position of less ink thereby ensuring a uniform distribution of the liquid along the surface of the roller.

Description

Die Erfindung betrifft eine Vorrichtung zum Transportieren eines flüssigen Mediums, insbesondere Druckfarbe, auf einem Mantel einer Walze gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a device for transporting a liquid medium, in particular printing ink, on a jacket of a roller according to the preamble of claim 1.

Durch die DE-B-30 14 144 ist eine derartige Vorrichtung zum Transportieren von Druckfarbe auf einem Mantel einer Farbwerkwalze einer Druckmaschine in deren Längsachsenrichtung bekanntgeworden. Es wird ein endloser Riemen verwendet, der über mehrere Umlenkmittel läuft. Der Riemen ist auf seiner äusseren Schicht mit einer oleophilen Schicht versehen.DE-B-30 14 144 has disclosed such a device for transporting printing ink on a jacket of an inking roller of a printing press in the longitudinal axis direction thereof. An endless belt is used that runs over several deflection means. The belt has an oleophilic layer on its outer layer.

Nachteilig ist bei dieser Vorrichtung jedoch, dass zusätzliche Umlenkstangen für den Riemen verwendet werden müssen, so dass unerwünschte Reibungswärme entsteht, welche die Viskosität der Druckfarbe beeinflusst. Ausserdem müssen mehrere zusätzliche Farbwerkwalzen angeordnet sein, um die Druckfarbe in Farbwerkwalzen-Längsachsenrichtung zu versetzen.A disadvantage of this device, however, is that additional deflecting rods must be used for the belt, so that undesirable frictional heat is generated which influences the viscosity of the printing ink. In addition, several additional inking unit rollers must be arranged in order to offset the printing ink in the longitudinal axis direction of the inking unit rollers.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit der es möglich ist, ein flüssiges Medium auf Walzen in deren Längsachsenrichtung zu transportieren, ohne dass die Walze eine Changierbewegung auszuführen braucht.The invention has for its object to provide a device with which it is possible to transport a liquid medium on rollers in their longitudinal axis direction without the roller needing to perform a traversing movement.

Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass mit einfachen Mitteln ein flüssiges Medium, z.B. Druckfarbe, Feuchtwasser, Beschichtungsflüssigkeit usw. auf einem Mantel einer Walze quer-, also in Walzenlängsachsenrichtung, transportiert werden kann, ohne eine Changierbewegung zu benötigen.The advantages that can be achieved with the invention are, in particular, that a liquid medium, e.g. Printing ink, fountain solution, coating liquid, etc. can be transported on a jacket of a roller crosswise, that is in the longitudinal direction of the roller, without requiring a traversing movement.

Der Gegenstand der Erfindung kann z. B. vorteilhaft in einem Farbwerk einer Rotationsdruckmaschine eingesetzt werden, um den Ungleichförmigkeitsgrad eines Farbschichtdickenreliefs über die Länge einer Farbauftragswalze wesentlich zu verkleinern, ohne dazu ein Rakel benutzen zu müssen.The object of the invention can, for. B. can advantageously be used in an inking unit of a rotary printing press in order to significantly reduce the degree of non-uniformity of an ink layer thickness relief over the length of an inking roller without having to use a doctor blade.

Selbst ein extremes Farbschichtdickenrelief kann über die Länge einer Auftragswalze mit einfachen Mitteln so verändert werden, dass der Ungleichförmigkeitsgrad so klein wird, dass er sich am gedruckten Produkt nicht mehr auswirkt. Es ist praktisch möglich, eine wählbar dicke Farbschicht auf einer Farbauftragswalze zu erzeugen, die über die gesamte Länge der Walze immer praktisch gleichmässig dick ist. Dieses ist aber die Voraussetzung für den Verzicht auf die heute allgemein übliche, aber sehr aufwendige Einrichtung zur farbzonenbreiten Ein- und Voreinstellung der Farbmenge eines Farbwerks.Even an extreme ink layer thickness relief can be changed over the length of an application roller with simple means in such a way that the degree of non-uniformity becomes so small that it no longer affects the printed product. It is practically possible to produce a selectively thick ink layer on an inking roller that is practically uniformly thick over the entire length of the roller. However, this is the prerequisite for dispensing with the generally customary but very complex device for setting and presetting the ink quantity of an inking unit across the ink zone.

Es ist mit dem Gegenstand der Erfindung möglich, einerr Farbschichtdickenausgleich über die gesamte Länge der Farbauftragswalze in kürzester Zeit durchzuführen, auch wenn die Maxima und Minima des Farbreliefs so weit voneinander entfernt sind, dass sie durch die Changierbewegung einer Verreibwalze nicht miteinander vermengt werden können. Es ist daher möglich, extreme Formen zu drucken, ohne auf dem Druckprodukt ein Schablonieren feststellen zu können. Auch wird durch die erfindungsgemässe Einrichtung das Verdunsten der in der Druckfarbe nach dem Drucken befindlichen Feuchtflüssigkeit begünstigt, so dass der in das Farbwerk zurücklaufende Farbfilm weitestgehend feuchtmittelfrei ist. Durch die Vielzahl der Spaltstellen wird die in das Farbwerk zurücklaufende Farbe geschmeidig gehalten.It is possible with the subject matter of the invention to carry out an ink layer thickness compensation over the entire length of the inking roller in the shortest possible time, even if the maxima and minima of the ink relief are so far apart that they cannot be mixed together by the traversing movement of a distribution roller. It is therefore possible to print extreme forms without being able to detect stenciling on the printed product. The device according to the invention also promotes the evaporation of the dampening liquid in the printing ink after printing, so that the ink film returning to the inking unit is largely free of dampening agent. Due to the large number of splitting points, the ink returning to the inking unit is kept supple.

Einen weiteren Vorteil bringt der Einsatz der erfindungsgemässen Vorrichtung auf Farbwalzen zur Verhinderung des bekannten «Druckfarbe-Spritzens»; denn in Farbwerken von Offset-Rotationsdruckmaschinen mit Alkoholfeuchtwerken kommt es bei Verwendung von emulgierfreudigen Druckfarben, auf die wegen anderer Vorzüge nicht verzichtet werden kann, häufig zum sogenannten «Druckfarbe-Spritzen». Hierbei lösen sich aufgrund der wirkenden Zentripetalkraft kleine Klumpen einer Druckfarbe-Feuchtwasser-Emulsion von Farbwerkswalzen ab und verunreinigen Papierbahn und/oder Druckmaschinenteile. Ein derartiges «Druckfarbe-Spritzen» findet man dann häufiger, wenn Papierbahnen bedruckt werden, deren Breite kleiner ist als die maximal verarbeitbare Papierbahnbreite, und da hauptsächlich, wenn sogenannte «angeschnittene Bilder» gedruckt werden, d. h. wenn bis, bzw. nahezu bis zur Papierbahnseitenkante gedruckt wird. In dieser Randzone bildet sich auf Walzen des Farbwerks eine verhältnismässig dünnflüssige Emulsion aus Druckfarbe und Feuchtflüssigkeit, aus der sich in unregelmässigen Zeitabständen kleine Klumpen lösen und, wie beschrieben, Papierbahn bzw. Druckmaschinenteile beschmutzen und u.U. Papierbahnbrüche hervorrufen können.Another advantage is the use of the device according to the invention on inking rollers to prevent the known “printing ink splashing”; Because in inking units of offset rotary printing presses with alcohol dampening units, so-called “ink spraying” often occurs when using emulsifying-friendly printing inks, which cannot be dispensed with because of other advantages. Due to the acting centripetal force, small lumps of a printing ink / fountain solution emulsion detach from inking unit rollers and contaminate the paper web and / or printing machine parts. Such "ink spraying" is more common when printing on paper webs whose width is smaller than the maximum processable paper web width, and mainly when so-called "bleed images" are printed, i. H. when printing up to, or almost to, the edge of the paper web. In this edge zone, a relatively thin emulsion of printing ink and dampening liquid forms on rollers of the inking unit, from which small lumps come loose at irregular intervals and, as described, contaminate the paper web or printing machine parts and possibly. Can cause paper web breaks.

Ausführungsbeispiele der Erfindung sind anhand eines Farbwerkes einer Rotationsdruckmaschine in der Zeichnung dargestellt und werden im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 eine Seitenansicht eines Farbwerks ohne Seitengestell mit Darstellung einer Anordnungsweise der erfindungsgemässen Einrichtung,
  • Fig. 2 eine Farbwalze mit aufgesetzter erfindungsgemässer Einrichtung,
  • Fig. 3 eine weitere Ausführung der erfindungsgemässen Einrichtung,
  • Fig. 4 die erfindungsgemässe Einrichtung in der Anwendung zum Verhindern des «Druckfarbe-Spritzens»,
  • Fig. 5 eine Anordnung der erfindungsgemässen Einrichtung nach Fig. 4 in einem herkömmlichen Farbwerk.
Exemplary embodiments of the invention are shown in the drawing using an inking unit of a rotary printing press and are described in more detail below. Show it:
  • 1 is a side view of an inking unit without a side frame showing an arrangement of the device according to the invention,
  • 2 shows an inking roller with the device according to the invention attached,
  • 3 shows a further embodiment of the device according to the invention,
  • 4 shows the device according to the invention in use for preventing "ink splashing",
  • Fig. 5 shows an arrangement of the inventive device according to Fig. 4 in a conventional inking unit.

Ein Farbwerk einer Rotationsdruckmaschine färbt in bekannter Weise eine gummibezogene Farbauftragswalze 1 ein, diese wiederum eine Druckplatte 2, z. B. eine Offsetdruckplatte, die auf einen Formzylinder 3 aufgespannt ist. Die Druckplatte 2 überträgt Farbe auf ein Gummituch 4 eines Gummituchzylinders 6. Farbauftragswalze 1, Formzylinder 3 und Gummituchzylinder 6 haben vorzugsweise gleichen Durchmesser und werden in bekannter Weise mit gleicher Umfangsgeschwindigkeit angetrieben. Über ein Feuchtwerk 7 wird die Farbauftragswalze 1 bzw. die Druckplatte 2 eingefeuchtet.An inking unit of a rotary printing machine dyes a rubber-coated inking roller 1 in a known manner, this in turn a printing plate 2, z. B. an offset printing plate, which is clamped on a forme cylinder 3. The printing plate 2 transfers ink to a blanket 4 of a blanket cylinder 6. Ink application roller 1, forme cylinder 3 and blanket cylinder 6 preferably have the same diameter and are driven in a known manner at the same peripheral speed. About a dampening system 7 the inking roller 1 or the printing plate 2 is moistened.

Die Farbauftragswalze 1 erhält ihre Druckfarbe aus einem vorzugsweise farbzonenschraubenlosen Farbkasten 8. Zur Erzeugung eines gleichmässigen Farbfilmes kann sowohl ein Heber- als auch ein Filmfarbwerk - wie es im Ausführungsbeispiel in Fig. 1 dargestellt ist - eingesetzt werden. Die Funktionsweise von Filmfarbwerken ist allgemein, z. B. durch die DE-PS 901 057, bekannt, so dass auf ihre detaillierte Beschreibung hier verzichtet werden kann.The inking roller 1 receives its printing ink from a preferably ink fountain screwless ink fountain 8. Both an elevator and a film inking unit - as shown in the exemplary embodiment in FIG. 1 - can be used to produce a uniform ink film. The operation of film inking units is general, e.g. B. from DE-PS 901 057, known, so that its detailed description can be omitted here.

Im Ausführungsbeispiel gelangt die Druckfarbe aus dem Farbkasten 8 über eine drehzahlsteuerbare Duktorwalze 9, Zwischenwalzen 11, 12, 13, 14, 16, auf eine erste Übertragungswalze 18 und eine zweite Übertragungswalze 19. Beide Übertragungswalzen 18, 19 stehen in Berührung mit der Farbauftragswalze 1. Duktorwalze 9, Zwischenwalzen 11 bis 16 und Übertragungswalzen 18, 19 haben einen bedeutend kleineren Durchmesser als die Farbauftragswalze 1, wobei die Walzen 11 bis 16, 18, 19 die gleiche Umfangsgeschwindigkeit aufweisen wie die Farbauftragswalze 1. Walzen 14, 18, 19 sind als changierende Farbverreibwalzen ausgeführt.In the exemplary embodiment, the printing ink passes from the ink fountain 8 via a speed-controllable duct roller 9, intermediate rollers 11, 12, 13, 14, 16, onto a first transfer roller 18 and a second transfer roller 19. Both transfer rollers 18, 19 are in contact with the ink application roller 1. Ductor roller 9, intermediate rollers 11 to 16 and transfer rollers 18, 19 have a significantly smaller diameter than the inking roller 1, the rollers 11 to 16, 18, 19 having the same peripheral speed as the inking roller 1. Rollers 14, 18, 19 are as oscillating Ink distribution rollers executed.

Um einen Umfang der Farbauftragswalze 1 verteilt zwischen vorzugsweise einer Berührungsstelle 21 von Farbauftragswalze 1 mit Formzylinder 3 und einer Berührungsstelle 22 von Farbauftragswalze 1 und zweiter (= letzter) Übertragungswalze 19 sind mehrere, z. B. drei rotierende Farbreliefausgleichswalzen 23, 24, 26 im Abstand a von z.B. 30° (Mittelpunktswinkel) voneinander angeordnet. Sie haben z. B. den gleichen Durchmesser wie die Übertragungswalzen 19, 18, sind mit einem druckfarbenfreundlichen (oleophilen) harten Mantel, wie z. B. Keramik oder Kupfer, versehen und laufen unter Pressung auf dem Umfang der Farbauftragswalze 1 um.Distributed around a circumference of the inking roller 1 between preferably a contact point 21 of inking roller 1 with forme cylinder 3 and a contact point 22 of inking roller 1 and second (= last) transfer roller 19 are several, for. B. three rotating color relief compensation rollers 23, 24, 26 at a distance of e.g. 30 ° (center angle) from each other. You have e.g. B. the same diameter as the transfer rollers 19, 18, are with an ink-friendly (oleophilic) hard coat, such as. B. ceramic or copper, provided and run under pressure on the circumference of the inking roller 1 to.

Auf jede der Farbreliefausgleichswalzen 23, 24, 26 sind eine oder mehrere Reihen 30, 35, z.B. zwei, von angetriebenen, endlosen Farbausgleichsriemen 27 - im weiteren kurz Riemen genannt-aufgesetzt. Jede Reihe 30, 35 von Riemen 27 besteht je nach Druckbreite aus einer Mehrzahl, z. B. 20, nebeneinander - direkt an- oder in einem Abstand voneinander - angeordneten Riemen 27. Die Riemen 27 sind z.B. 40 mm breit. Sie bestehen - oder zumindest ihre Aussenseite 36 besteht - aus einer druckfarbenfreundlichen Schicht 37, z.B. Gummi.On each of the color relief compensation rollers 23, 24, 26 are one or more rows 30, 35, e.g. two, by driven, endless color balancing belts 27 - hereinafter referred to as belts - attached. Each row 30, 35 of belts 27 consists of a plurality, for. B. 20, side by side - directly on or at a distance from each other - arranged belts 27. The belts 27 are e.g. 40 mm wide. They consist - or at least their outside 36 consists - of an ink-friendly layer 37, e.g. Rubber.

In den nicht dargestellten Seitengestellen sind eine oder mehrere angetriebene Antriebswalzen 28 gelagert. Sie dienen jeweils zum Antrieb der Riemen 27 und werden entweder über einen Hauptantrieb der Maschine oder einen separaten Antrieb, z.B. einen drehzahlgeregelten Elektromotor angetrieben. In einem Abstand «a» von der Antriebswalze 28 ist ein Träger 29 zwischen den Seitengestellen angeordnet und an ihnen angeschraubt. In einem Winkel von 90° zu einer Längsachse des Trägers 29 sind in einem Abstand «b» voneinander, über- und nebeneinander eine Mehrzahl von Achsen 32 auf dem Träger 29 angeschweisst. Auf den Achsen 32 ist je eine Umlenkrolle 33 bzw. eine Farbübertragungsrolle 34 drehbar gelagert. Jede Umlenkrolle 33 ist mit der Antriebswalze 28 mittels eines Riemens 27 kraftschlüssig verbunden. Rotationsachsen 15 bzw. 17 der Umlenkrollen 33 und Farbübertragungsrollen 34 verlaufen parallel. Die Rotationsachsen 20, 15, 17 der angetriebenen Walzen 28 und Umlenkrollen 33 bzw. Farbübertragungsrollen 34 sind auf zueinander parallelen Ebenen angeordnet. Hierbei schneiden jeweils die durch die Rotationsachsen 15, 17 von Umlenkrollen 32 bzw. Farbübertragungsrollen 34 gehenden lotrechten Ebenen eine sich entlang der Rotationsachse 20 erstreckende senkrechte Ebene in einem Winkel von 90°. Auf jeweils direkt benachbarte Riemen 27 drückt jeweils eine Farbübertragungsrolle 34. Hierdurch werden die Riemen 27 an die ihnen zugeordneten Umlenkrollen 33 gepresst. Die Farbübertragungsrolle 34 ist mit einem oleophilen Mantel - z. B. aus Gummi - versehen und überträgt so Druckfarbe von einem Riemen 27 auf den jeweils direkt benachbarten Riemen 27.One or more driven drive rollers 28 are mounted in the side frames (not shown). They each serve to drive the belts 27 and are operated either via a main drive of the machine or a separate drive, e.g. driven a speed-controlled electric motor. At a distance “a” from the drive roller 28, a carrier 29 is arranged between the side frames and screwed to them. At an angle of 90 ° to a longitudinal axis of the carrier 29, a plurality of axes 32 are welded onto the carrier 29 at a distance “b” from one another, one above the other and next to one another. A deflection roller 33 and an ink transfer roller 34 are each rotatably mounted on the axes 32. Each deflection roller 33 is non-positively connected to the drive roller 28 by means of a belt 27. Rotation axes 15 and 17 of the deflection rollers 33 and ink transfer rollers 34 run parallel. The axes of rotation 20, 15, 17 of the driven rollers 28 and deflection rollers 33 or ink transfer rollers 34 are arranged on mutually parallel planes. In this case, the vertical planes passing through the rotation axes 15, 17 of deflection rollers 32 or ink transfer rollers 34 each intersect a vertical plane extending along the rotation axis 20 at an angle of 90 °. An ink transfer roller 34 presses on directly adjacent belts 27. As a result, the belts 27 are pressed against the deflection rollers 33 assigned to them. The ink transfer roller 34 is with an oleophilic coat - z. B. made of rubber - and thus transfers ink from a belt 27 to the directly adjacent belt 27th

Selbstverständlich kann aber auch jeweils die Farbübertragungsrolle 34 unterhalb von zwei Umlenkrollen 33 angeordnet sein. In diesem Falle umschlingen je zwei benachbarte Riemen 27 die Farbübertragungsrolle 34 teilweise. Hierdurch wird z.B. von der Farbreliefausgleichswalze 23 mittels eines ersten Riemens 27 Druckfarbe oder eine Druckfarben-Feuchtigkeitsemulsion auf die Farbübertragungsrolle 34 und von da auf den benachbarten Riemen 27 und von da auf die Farbreliefausgleichswalze 23 - also in deren Längsachsenrichtung versetzt-transportiert und so weiter.Of course, the ink transfer roller 34 can also be arranged below two deflection rollers 33. In this case, two adjacent belts 27 partially wrap around the ink transfer roller 34. This will e.g. from the ink relief compensation roller 23 by means of a first belt 27 printing ink or an ink moisture emulsion to the ink transfer roller 34 and from there to the adjacent belt 27 and from there to the ink relief compensation roller 23 - i.e. offset in its longitudinal axis direction - and so on.

Anstatt der Farbübertragungsrollen 34 können auch endlose Farbtransportriemen 38 - auch mit eigenem Antrieb - in Form eines Horizontalriemens vorgesehen werden. Dieser Farbtransportriemen 38 liegt auf mehreren nebeneinander angeordneten (Vertikal-)Riemen 27 auf, und zwar an Stellen, an denen die Riemen 27 die Umlenkrollen 33 umschlingen. Von diesen (Horizontal-)Farbtransportriemen 38 wird dann Druckfarbe von einem Riemen 27 auf den nächstfolgenden transportiert usw. Andruckrollen 39 führen den Farbtransportriemen 38. Sie drücken ihn aber auch gleichzeitig gegen die Riemen 27. Die Andruckrollen 39 sind auf Achsen 32 drehbar gelagert.Instead of the ink transfer rollers 34, endless ink transport belts 38 - also with their own drive - can be provided in the form of a horizontal belt. This ink transport belt 38 rests on a plurality of (vertical) belts 27 arranged next to one another, specifically at points at which the belts 27 wrap around the deflection rollers 33. From these (horizontal) ink transport belts 38, printing ink is then transported from one belt 27 to the next one, etc. Pressure rollers 39 guide the ink transport belt 38. They also press it against the belt 27 at the same time. The pressure rollers 39 are rotatably mounted on axes 32.

Durch die Anordnung von mehreren Riemen 27 nebeneinander, z. B. über einen Teil der Länge der Antriebswalze 28 oder über ihre gesamte Länge «I» und damit über eine Länge der Farbreliefausgleichswalze 26 kann ein Druckfarbedickenausgleich in Längsachsenrichtung einer Druckfarbe führenden Farbwerkwalze 23, 24, 26 erfolgen. Der Druckfarbedickenausgleich erfolgt jeweils von Stellen mit Druckfarbeüberschuss zu Stellen mit Druckfarbemangel, so dass sich entlang der Walzenlänge ein gleich dicker Farbfilm bildet.By arranging several belts 27 side by side, for. B. over part of the length of the drive roller 28 or over its entire length “I” and thus over a length of the ink relief compensation roller 26, an ink thickness compensation in the longitudinal axis direction of an ink leading inking roller 23, 24, 26 can be carried out. The ink thickness compensation takes place from places with excess ink to places with lack of printing ink, so that an equally thick ink film forms along the roller length.

Die Riemen 27 werden durch die Antriebswalzen 28 gegen die Farbreliefausgleichswalzen 23, 24, 26 gedrückt. Diese stehen jeweils mit ihrem Mantel in Berührung mit einer oder mehreren Farbwerkwalzen.The belts 27 are pressed by the drive rollers 28 against the ink relief compensation rollers 23, 24, 26. Each of their jackets is in contact with one or more inking rollers.

Nebeneinander angeordnete Umlenkrollen 33 können in gleichem oder unterschiedlichem Drehsinn angetrieben werden, je nachdem wie die Riemen 27 auf die Umlenkrollen 33 aufgelegt werden. Sind die Drehrichtungen zweier benachbarter Umlenkrollen 33 gleich, so werden nur eine, oder eine ungerade Anzahl von Farbübertragungsrollen 34 - die jeweils mit der benachbarten in Berührung stehen - zwischen zwei benachbarten Umlenkrollen 33 angeordnet, wobei bei Anordnung von nur einer Farbübertragungsrolle 34 diese mit beiden Umlenkrollen 33 über die Riemen 27 in Berührung steht. Sind die Drehrichtungen zweier benachbarter Umlenkrollen 33 ungleich, so werden zwei oder eine gerade Anzahl von Farbübertragungsrollen 34 zwischen zwei benachbarten Umlenkrollen 33 angeordnet.Deflection rollers 33 arranged next to one another can be driven in the same or different sense of rotation, depending on how the belts 27 are placed on the deflection rollers 33. If the directions of rotation of two adjacent deflection rollers 33 are the same, then only one or an odd number of ink transfer rollers 34 - each of which is in contact with the adjacent one - are arranged between two adjacent deflection rollers 33, whereby if only one ink transfer roller 34 is arranged, these with both deflection rollers 33 is in contact via the belt 27. If the directions of rotation of two adjacent deflection rollers 33 are not the same, two or an even number of ink transfer rollers 34 are arranged between two adjacent deflection rollers 33.

Soll die erfindungsgemässe Einrichtung zum Verhindern des Druckfarbe-Spritzens Anwendung finden, so ist nicht die gesamte Breite einer Farbwerkswalze 41 mit Riemen 27 bedeckt, sondern es sind nur wenige angeordnet, und zwar an den Stellen, an denen sich das Druckfarbe-Feuchtmittelgemisch ansammelt. So kann es sein, dass an beiden Enden der Farbwerkswalze 41 je zwei oder drei Riemen 27 vorgesehen sind (siehe Fig. 4). Um die Riemen 27 an die Stellen auf der Farbwerkswalze 41 bringen zu können, an denen ein Druckfarbe-Feuchtmittel-Überschuss besteht, ist ein verschieb- und fixierbarer Schlitten (nicht dargestellt) am Träger 29 vorgesehen, auf dem die Umlenkrollen 33 und die Farbübertragungsrollen 34 befestigt sind.If the device according to the invention for preventing ink spraying is to be used, the entire width of an inking roller 41 is not covered with belts 27, but only a few are arranged, specifically at the locations at which the ink / dampening agent mixture accumulates. It may be the case that two or three belts 27 are provided at each end of the inking roller 41 (see FIG. 4). In order to be able to bring the belts 27 to the places on the inking roller 41 where there is an excess of ink and dampening solution, a slidable and fixable carriage (not shown) is provided on the carrier 29 on which the deflection rollers 33 and the ink transfer rollers 34 are attached.

Wie aus Fig. 1 auch ersichtlich, kann die erfindungsgemässe Einrichtung vorteilhafterweise auch bei Feuchtwerken 7 eingesetzt werden.As can also be seen from FIG. 1, the device according to the invention can advantageously also be used with dampening units 7.

Claims (3)

1. Apparatus for transporting a liquid medium, particularly a printing ink, in longitudinal direction along a periphery of a cylinder (23; 24; 26) of a printing machine, whereby the ink transport is achieved by means of an endless belt (27) running over supported guide means (33; 38) secured to side frames, said endless belt being provided on its outside (36) with a layer (37) capable of being wetted by the liquid medium and the belt (27) with out layer (37) being in contact with a roller (23; 24; 26) carrying the liquid medium, characterized in that at least two belts (27) are provided adjacent to one another and that at least one rotating supported transfer element (34; 38) secured to side frames is provided which is in frictional contact with the at least two belts (27).
2. Apparatus in accordance with claim 1, characterized in that the movable transfer element (34; 38) is constructed as a rotatable transfer roller (34).
3. Apparatus in accordance with claim 1 characterized in that the movable transfer element (34; 38) is constructed as an endless belt (38).
EP83106317A 1982-07-07 1983-06-29 Inking device Expired EP0098514B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106317T ATE30401T1 (en) 1982-07-07 1983-06-29 INK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823225378 DE3225378A1 (en) 1982-07-07 1982-07-07 INK
DE3225378 1982-07-07

Publications (3)

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EP0098514A2 EP0098514A2 (en) 1984-01-18
EP0098514A3 EP0098514A3 (en) 1985-05-15
EP0098514B1 true EP0098514B1 (en) 1987-10-28

Family

ID=6167849

Family Applications (1)

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EP83106317A Expired EP0098514B1 (en) 1982-07-07 1983-06-29 Inking device

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US (1) US4454813A (en)
EP (1) EP0098514B1 (en)
JP (1) JPS5922757A (en)
AT (1) ATE30401T1 (en)
DE (2) DE3225378A1 (en)

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DE3127880C2 (en) * 1981-07-15 1983-12-22 Koenig & Bauer AG, 8700 Würzburg Inking unit
DE3531433A1 (en) * 1985-09-03 1987-03-12 Heidelberger Druckmasch Ag INK FOR ROTATIONAL PRINTING MACHINES
DE3613877A1 (en) * 1986-04-24 1987-10-29 Roland Man Druckmasch INK FOR A ROTATIONAL FLAT PRINTING MACHINE
DD278552A1 (en) * 1988-12-23 1990-05-09 Polygraph Leipzig COLOR WORK FOR QUICKLY ROTATING PRINTING MACHINES
DE3927934A1 (en) * 1989-08-24 1991-02-28 Kronseder Maschf Krones DEVICE FOR PRINTING LABELS IN LABELING MACHINES
JPH0742470B2 (en) * 1989-11-20 1995-05-10 日本パーカライジング株式会社 Anti-rust press working oil for galvanized steel sheet
JPH0742471B2 (en) * 1990-01-17 1995-05-10 新日本製鐵株式会社 Anti-corrosion press working oil for galvanized steel sheet
AU632956B2 (en) * 1990-08-31 1993-01-14 Goss Graphic Systems, Inc. Keyless printing system for keyless lithographic printing
US6367380B1 (en) * 1998-02-02 2002-04-09 Sequa Can Machinery, Inc. Inking system with a belt and differential roller speeds
WO1999038691A1 (en) * 1998-02-02 1999-08-05 Sequa Corporation Inking system with a belt and differential roller speeds
DE10202785B4 (en) * 2002-01-25 2011-12-01 Manroland Ag Printing machine with a dyeing and dampening unit
US20100083856A1 (en) * 2008-10-03 2010-04-08 Goss International Americas, Inc. Belted inker for a printing press
US20230234083A1 (en) * 2022-01-27 2023-07-27 Palo Alto Research Center Incorporated System and method of atomizing reactive two-part fluids

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US549976A (en) * 1895-11-19 Ertson
US773444A (en) * 1903-06-05 1904-10-25 Ernst Wesser Cylinder printing-machine.
US1840009A (en) * 1929-09-20 1932-01-05 Hoe & Co R Inking mechanism for printing machines
CH270859A (en) * 1940-08-22 1950-09-30 Semperit Ag Inking unit for letterpress machines.
DE901057C (en) * 1950-04-14 1954-01-07 Koenig & Bauer Schnellpressfab Lifterless inking unit for rotary printing machines
US3366046A (en) * 1966-02-01 1968-01-30 Frank V. Szasz Printing cylinder with ink belts for multicolor single impression printing
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Also Published As

Publication number Publication date
EP0098514A3 (en) 1985-05-15
ATE30401T1 (en) 1987-11-15
JPH0377784B2 (en) 1991-12-11
JPS5922757A (en) 1984-02-06
DE3225378A1 (en) 1984-01-12
DE3374188D1 (en) 1987-12-03
EP0098514A2 (en) 1984-01-18
US4454813A (en) 1984-06-19

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