EP0166955B1 - Ink fountain for a rotary printing press with an ink metering device - Google Patents

Ink fountain for a rotary printing press with an ink metering device Download PDF

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Publication number
EP0166955B1
EP0166955B1 EP85106468A EP85106468A EP0166955B1 EP 0166955 B1 EP0166955 B1 EP 0166955B1 EP 85106468 A EP85106468 A EP 85106468A EP 85106468 A EP85106468 A EP 85106468A EP 0166955 B1 EP0166955 B1 EP 0166955B1
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EP
European Patent Office
Prior art keywords
ink
plate
duct
roller
width
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
EP85106468A
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German (de)
French (fr)
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EP0166955A2 (en
EP0166955A3 (en
Inventor
Klaus Theilacker
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Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0166955A2 publication Critical patent/EP0166955A2/en
Publication of EP0166955A3 publication Critical patent/EP0166955A3/en
Application granted granted Critical
Publication of EP0166955B1 publication Critical patent/EP0166955B1/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
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering 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
    • Y10S101/47—Automatic or remote control of metering blade position

Definitions

  • the invention relates to an ink fountain for rotary printing machines with an ink metering device comprising ink metering elements arranged next to one another in the axial direction for zone-by-zone adjustment of the width of ink strips to be transferred on the ink fountain roller.
  • a metering device which also regulates the ink film thickness and has slides which can be adjusted radially to the ink fountain roller is known from CH-A 608426 and from DE-A 2 951 653.
  • the ink fountain consists of an ink fountain upper part 2 and an ink fountain lower part 3. Between these parts 2, 3 they are radial to the Ink fountain roller 1 with its front edges A, B sprung ink metering plates 4, 5 positioned.
  • the overhead, somewhat longer plate 4 is pressed by two compression springs 6 with its front edge A against the ink fountain roller 1.
  • the springs 6 each have one end supported on the ink fountain lower part 3 and the other end on bolts 7 fastened to the plate 4.
  • the plate 4 is also attached to the ink fountain lower part 3 such that only a longitudinal movement of the plate 4 in the direction of the ink fountain roller 1 is possible, while the plates 4 are each laterally fixed. This is by Lan g holes 20 in the plate 4 easily possible.
  • the somewhat shorter plate 5 is arranged, which also resiliently abuts the ink fountain roller 1 with its front edge B.
  • two compression springs 9 are provided per plate 5, each of which is supported with one end on the ink fountain lower part 3 and with the other on the underside of the plate 5 supporting bolts 10.
  • each ink zone-wide plate 5 has an elongated hole 19.
  • An eccentric 11 engages in each one. This eccentric 11 is moved by means of a reduction gear 12 assigned to it via a ink zone servomotor 13 or conventional, manually actuatable ink zone adjustment screws 14 such that the lower plate 5 can be displaced in the axial direction of the ink fountain roller 1.
  • the front plate B always remains spring-loaded on the ink fountain roller 1 during the axial displacement.
  • the front edges A, B of the plates 4, 5 are provided with elevations 15, 17 and depressions 16, 18.
  • These recesses 16, 18 can be of any desired shape with regard to their geometric shape, but rectangular recesses are preferably suitable.
  • the support areas 15 of the plate 5 and support areas 17 of the plate 4 as well as the recesses 16 of the plate 5 and the recesses 18 of the plate 4 also lie one above the other.
  • the passage is the largest, that is to say the widest, in the axial direction of the ink fountain roller 1. Color rings with a maximum width corresponding to the maximum color requirement are thus generated for the color zone in question.

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

Description

Die Erfindung betrifft einen Farbkasten für Rotationsdruckmaschinen mit einer in Axialrichtung nebeneinander angeordnete Farbdosierelemente umfassenden Farbdosiereinrichtung zur zonenweisen Einstellung der Breite von zu übertragenden Farbstreifen auf der Farbkastenwalze.The invention relates to an ink fountain for rotary printing machines with an ink metering device comprising ink metering elements arranged next to one another in the axial direction for zone-by-zone adjustment of the width of ink strips to be transferred on the ink fountain roller.

Aus der DE-C 2648098 ist es bekannt, zur Einstellung der in den einzelnen Farbzonen benötigten Farbschichtdicken nebeneinander angeordnete, an die Farbkastenwalze angefederte Dosierelemente zu verwenden. Durch die Einzelanfederungen mit ständig an der Farbkastenwalze anliegenden Stützbereichen wird erreicht, dass unabhängig von Rundlauffehlern stets die gewünschte zonale Farbschichtdicke eingestellt werden kann. Der Nachteil derartiger Farbdosiervorrichtungen liegt darin, dass bei geringem Farbbedarf in den einzelnen Farbzonen entsprechend dünne Farbschichtdicken erzeugt werden müssen, was bekanntlich zu einer erheblichen Störanfälligkeit gegenüber Schmutz und Popel im Farbkasten führt, denn derartige Feststoffe bzw. Feststoffteilchen setzen sich besonders bei einem geringem Abstand zwischen Dosierbereich und Farbkastenwalze fest.From DE-C 2648098 it is known to use dosing elements arranged next to one another and sprung onto the ink fountain roller to adjust the ink layer thicknesses required in the individual ink zones. The individual suspension with support areas constantly in contact with the ink fountain roller ensures that the desired zonal ink layer thickness can always be set regardless of concentricity errors. The disadvantage of such ink metering devices is that if the ink requirement is low in the individual ink zones, correspondingly thin ink layer thicknesses have to be produced, which is known to lead to considerable susceptibility to dirt and pops in the ink fountain, because such solids or solid particles settle particularly at a small distance between Dosing range and ink fountain roller fixed.

Der Farbdurchgang wird dadurch unkontrollierbar und die Gleichmässigkeit besonders der dünnen Farbschichten erheblich gestört. Ein weiterer Nachteil ist darin zu sehen, dass die einzelnen Dosierelemente in einer quasi tangentialen Anstellung an die Farbkastenwalze angefedert sind. Dies erfordert wegen den hydrodynamischen Kräften eine relativ hohe Anfederkraft mit all ihren schädlichen Folgen, wie hohem Verschleiss oder gar Anfressen der Farbkastenwalze. Eine ebenfalls die Farbfilmdicke regulierende Dosiereinrichtung mit radial zur Farbkastenwalze verstellbaren Schiebern ist aus der CH-A 608426 und aus der DE-A 2 951 653 bekannt.The passage of color becomes uncontrollable and the uniformity, especially of the thin layers of paint, is considerably disturbed. Another disadvantage is the fact that the individual dosing elements are spring-loaded in a quasi-tangential position on the ink fountain roller. Because of the hydrodynamic forces, this requires a relatively high spring force with all its harmful consequences, such as high wear or even galling of the ink fountain roller. A metering device which also regulates the ink film thickness and has slides which can be adjusted radially to the ink fountain roller is known from CH-A 608426 and from DE-A 2 951 653.

Des weiteren ist es aus der DD-A 120833 bekannt, bei gleichbleibender Dicke die Breite der zu übertragenden Farbstreifen entsprechend dem jeweiligen zonalen Farbbedarf zu ändern. Bei einem derartigen Dosierprinzip ist die vorangehend erwähnte Gefahr weitgehend eliminiert, da auch bei geringem Farbbedarf ein ausreichender Abstand zwischen dem Dosierbereich einer Farbzone und der Farbkastenwalze eingehalten wird. Bei dieser bekannten Farbdosiervorrichtung erfolgt die Einstellung der jeweils erforderlichen Breite des Farbfilms mittels nebeneinander angeordneter, in ihrer Längsrichtung verschiebbarer Dosierzungen, die keilförmige Ausfräsungen aufweisen, so dass nebeneinanderliegende Stütz- und Dosierbereiche gebildet werden. Die elastischen, mit den Stützbereichen an die Farbkastenwalze tangential angefederten Dosierzungen sind infolge des hydrodynamischen Druckes nur mit verhältnismässig grossem Kraftaufwand längsverschiebbar.Furthermore, it is known from DD-A 120833 to change the width of the color strips to be transferred in accordance with the respective zonal color requirement while maintaining the same thickness. With such a metering principle, the aforementioned risk is largely eliminated, since even with a low ink requirement, a sufficient distance between the metering area of an ink zone and the ink fountain roller is maintained. In this known ink metering device, the required width of the ink film is adjusted by means of metering tongues which are arranged next to one another and can be displaced in their longitudinal direction and have wedge-shaped cutouts, so that adjacent support and metering areas are formed. The elastic metering tongues sprung tangentially with the support areas on the ink fountain roller can only be moved longitudinally with a relatively large amount of force due to the hydrodynamic pressure.

Ausgehend von dem aus der DD-A 120 833 bekannten, nach dem Prinzip der Farbstreifenbreiten-Variierung arbeitenden Farbdosiervorrichtung ist es Aufgabe der Erfindung, eine ebenfalls nach diesem Dosierprinzip arbeitende Farbdosiervorrichtung zu schaffen, bei der unter radialer Anstellung der Farbdosierelemente an die Farbkastenwalze deren feinfühlige Einstellung zur Festlegung der Farbstreifenbreite bei gleichbleibender Dicke mit verhältnismässig geringer Kraft ermöglicht wird.Starting from the ink metering device known from DD-A 120 833, which works according to the principle of the color strip width variation, it is the object of the invention to provide an ink metering device which also works according to this metering principle, in which the ink metering element is adjusted radially to the ink fountain roller to adjust it sensitively to determine the color stripe width while maintaining the thickness with relatively little force.

Diese Aufgabe wird durch die Anwendung der Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen sowie aus der Beschreibung in Verbindung mit den Zeichnungen.This object is achieved by applying the features of the characterizing part of patent claim 1. Further developments of the invention result from the subclaims and from the description in conjunction with the drawings.

Wesentliche Vorteile der erfindungsgemässen Dosiervorrichtungen sind darin zu sehen, dass auch bei geringem Farbbedarf zonale Farbstreifen gleichbleibender Dicke auf der Farbkastenwalze oder auch auf einer anderen Farbwerkwalze, auf der eine Farbschicht zu dosieren ist, feinfühlig einstellbar ist, wobei durch eine entsprechende Vielzahl von Ausnehmungen an den Vorderkanten der Dosierplatten gleichmässig über die gesamte Farbzone entsprechend schmale Farbringe erzeugt werden können, deren Verreibung leicht möglich ist. Dies gilt auch für benachbarte Farbzonen. Bei entsprechend kleiner Verzahnung der Vorderkanten der Farbdosierplatten und gleichem Farbbedarf in zwei benachbarten Farbzonen ist praktisch auf der Farbkastenwalze kein Übergang zwischen zwei benachbarten Farbzonen an der auf der Farbkastenwalze erzeugten Farbschicht erkennbar. Somit ist ein gleichmässiges, individuell einstellbares Farbrelief über die gesamte Farbkastenwalze produzierbar.Significant advantages of the metering devices according to the invention can be seen in the fact that, even with a low ink requirement, zonal ink strips of constant thickness can be finely adjusted on the ink fountain roller or on another inking roller on which an ink layer is to be metered, with a corresponding number of recesses in the Front edges of the dosing plates can be produced evenly over the entire color zone in accordance with narrow color rings, which can be easily rubbed. This also applies to neighboring color zones. With a correspondingly small toothing of the front edges of the ink metering plates and the same ink requirement in two adjacent ink zones, practically no transition between two adjacent ink zones is recognizable on the ink fountain roller on the ink layer generated on the ink fountain roller. This means that a uniform, individually adjustable color relief can be produced across the entire ink fountain roller.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels beschrieben, wobei Bezug auf die beiliegenden Zeichnungen genommen wird. In diesen zeigen:

  • Fig. 1 eine Schnittdarstellung durch einen Farbkasten einer Rotationsoffsetdruckmaschine, an dem die erfindungsgemässe Dosiereinrichtung verwendet wird und
  • Fig. 2 und 3 Schnittdarstellungen durch die Darstellung gemäss Fig. 1 entlang 11-11 und 111-111.
An dem in Fig. 1 im Schnitt dargestellten Farbkasten ist eine Farbkastenwalze 1 angeordnet, auf die entsprechend dem in den einzelnen, sich in deren Achsrichtung erstreckenden Farbzonen erforderlichen Farbbedarf eine gleichmässig dikke Farbschicht aufgebracht werden soll. Die Breite der Farbringe soll jeweils in den einzelnen Farbzonen individuell regelbar sein. Von der Farbkastenwalze 1 gelangt dann die Farbe in üblicher Weise unter Verreibung über mehrere Farbwerkwalzen an Farbauftragwalzen, durch die bekanntlich eine Druckform eingefärbt wird (nicht gezeigt).The invention is described below using an exemplary embodiment, reference being made to the accompanying drawings. In these show:
  • Fig. 1 is a sectional view through an ink fountain of a rotary offset printing press, on which the metering device according to the invention is used and
  • 2 and 3 are sectional views through the illustration of FIG. 1 along 11-11 and 111-111.
An ink fountain roller 1 is arranged on the ink fountain shown in section in FIG. 1, to which a uniformly thick ink layer is to be applied in accordance with the ink requirements required in the individual ink zones extending in the axial direction thereof. The width of the color rings should be individually adjustable in the individual color zones. The ink then arrives from the ink fountain roller 1 in the usual manner, with trituration over several inking rollers on ink application rollers, through which, as is known, a printing form is inked (not shown).

Der Farbkasten besteht aus einem Farbkastenoberteil 2 und einem Farbkastenunterteil 3. Zwischen diesen Teilen 2, 3 sind die radial an die Farbkastenwalze 1 mit ihren Vorderkanten A, B angefederten Farbdosierplatten 4, 5 positioniert. Die obenliegende, etwas längere Platte 4 wird durch zwei Druckfedern 6 mit ihrer Vorderkante A gegen die Farbkastenwalze 1 angedrückt. Die Federn 6 stützen sich jeweils mit einem Ende an dem Farbkastenunterteil 3 und mit dem anderen Ende an auf der Platte 4 befestigten Bolzen 7 ab. Mit Hilfe einer oder mehrerer Befestigungsschrauben 8 ist ausserdem die Platte 4 am Farbkastenunterteil 3 so befestigt, dass lediglich eine Längsbewegung der Platte 4 in Richtung Farbkastenwalze 1 möglich ist, während die Platten 4 jeweils seitlich fixiert sind. Dies ist mittels Langlöchern 20 in der Platte 4 ohne weiteres möglich.The ink fountain consists of an ink fountain upper part 2 and an ink fountain lower part 3. Between these parts 2, 3 they are radial to the Ink fountain roller 1 with its front edges A, B sprung ink metering plates 4, 5 positioned. The overhead, somewhat longer plate 4 is pressed by two compression springs 6 with its front edge A against the ink fountain roller 1. The springs 6 each have one end supported on the ink fountain lower part 3 and the other end on bolts 7 fastened to the plate 4. With the help of one or more fastening screws 8, the plate 4 is also attached to the ink fountain lower part 3 such that only a longitudinal movement of the plate 4 in the direction of the ink fountain roller 1 is possible, while the plates 4 are each laterally fixed. This is by Lan g holes 20 in the plate 4 easily possible.

Unterhalb der Platte 4 ist die etwas kürzere Platte 5 angeordnet, die mit ihrer Vorderkante B ebenfalls federnd an der Farbkastenwalze 1 anliegt. Dafür sind zwei Druckfedern 9 pro Platte 5 vorgesehen, die sich jeweils mit einem Ende am Farbkastenunterteil 3 und mit dem anderen an der Unterseite der Platte 5 befestigten Stützbolzen 10 abstützen.Below the plate 4, the somewhat shorter plate 5 is arranged, which also resiliently abuts the ink fountain roller 1 with its front edge B. For this purpose, two compression springs 9 are provided per plate 5, each of which is supported with one end on the ink fountain lower part 3 and with the other on the underside of the plate 5 supporting bolts 10.

Wie Fig. 2 am besten erkennen lässt, weist jede farbzonenbreite Platte 5 ein Langloch 19 auf. In dieses greift jeweils ein Exzenter 11. Dieser Exzenter 11 wird mittels eines ihm zugeordneten Untersetzungsgetriebes 12 über einen Farbzonenstellmotor 13 oder herkömmlichen, manuell betätigbaren Farbzonenstellschrauben 14 so bewegt, dass die untere Platte 5 in Achsrichtung der Farbkastenwalze 1 verschiebbar ist. Ebenso wie die farbzonenbreite obere Platte 4 bleibt während der Axialverschiebung die untere Platte 5 mit ihrer Vorderkante B stets an der Farbkastenwalze 1 angefedert.As best seen in FIG. 2, each ink zone-wide plate 5 has an elongated hole 19. An eccentric 11 engages in each one. This eccentric 11 is moved by means of a reduction gear 12 assigned to it via a ink zone servomotor 13 or conventional, manually actuatable ink zone adjustment screws 14 such that the lower plate 5 can be displaced in the axial direction of the ink fountain roller 1. Like the ink zone-wide upper plate 4, the front plate B always remains spring-loaded on the ink fountain roller 1 during the axial displacement.

Wie die Figuren 2 und 3 zeigen, sind die Vorderkanten A, B der Platten 4, 5 mit Erhöhungen 15, 17 und Vertiefungen 16, 18 versehen. Diese Vertiefungen 16, 18 können bezüglich ihrer geometrischen Form beliebig ausgebildet sein, jedoch eignen sich vorzugsweise rechteckförmige Ausnehmungen.As FIGS. 2 and 3 show, the front edges A, B of the plates 4, 5 are provided with elevations 15, 17 and depressions 16, 18. These recesses 16, 18 can be of any desired shape with regard to their geometric shape, but rectangular recesses are preferably suitable.

Es liegt im Ermessen des Fachmannes, an den Platten 4, 5 eine entsprechend grosse Anzahl von Vertiefungen 16 bzw. 18 vorzusehen. Es versteht sich, dass eine hohe Anzahl der Farbringe pro Farbzone auf der Farbkastenwalze 1 entsprechend der Anzahl von Vertiefungen 16 bzw. 18 die Verreibung verhältnismässig unproblematisch macht. Ausserdem ergeben sich praktisch keine Stossstellen, das heisst farbfreie Bereiche zwischen benachbarten Dosierelementen. Die Vertiefungen 16, 18 müssen nicht deckungsgleich übereinander liegen. Die Platten 4, können etwa gleich breit sein. Die Platte 4 kann jedoch auch eine Breite, in Achsrichtung gesehen, aufweisen, die einem Vielfachen der Farbzonenbreite entspricht.It is at the discretion of the person skilled in the art to provide a correspondingly large number of depressions 16 and 18 on the plates 4, 5. It goes without saying that a large number of color rings per ink zone on the ink fountain roller 1, corresponding to the number of depressions 16 and 18, makes the rubbing relatively unproblematic. In addition, there are practically no joints, that is, color-free areas between adjacent dosing elements. The depressions 16, 18 need not be congruent with one another. The plates 4 can be approximately the same width. However, the plate 4 can also have a width, seen in the axial direction, which corresponds to a multiple of the color zone width.

Da die in Langlöchern 20 und zwischen Führungen 21 etwa in Radialrichtung zur Farbkastenwalze 1 hin beweglichen Platten 4 keine Bewegung in Achsrichtung der Farbkastenwalze 1 ausführen können, während mittels der Exzenter 11 die unteren Platten 5 jeweils individuell verschiebbar sind, ergeben sich durch die kammartigen Ausnehmungen 16, 18 der beiden übereinanderliegenden Platten 4, 5 an deren Vorderkanten A, B unterschiedlich breite Durchlässe in Achsrichtung gesehen, während die die Farbschicht definierende Tiefe jeweils konstant bleibt. Dadurch ist eine individuelle Regelung der in den einzelnen Farbzonen erforderlichen Farbmenge möglich, denn durch die unterschiedlich breiten Durchlässe werden unterschiedlich breite Farbringe auf der Farbkastenwalze 1 erzeugt.Since the plates 4, which are movable in elongated holes 20 and between guides 21 approximately in the radial direction toward the ink fountain roller 1, cannot move in the axial direction of the ink fountain roller 1, while the eccentric 11 allows the lower plates 5 to be moved individually, the comb-like recesses 16 result , 18 of the two superposed plates 4, 5 seen at their front edges A, B passages of different widths in the axial direction, while the depth defining the color layer remains constant in each case. This enables individual regulation of the amount of ink required in the individual ink zones, because the differently wide passages produce differently wide color rings on the ink fountain roller 1.

Liegen die Platten 4 und 5 deckungsgleich übereinander, kommen auch die Stützbereiche 15 der Platte 5 und Stützbereiche 17 der Platte 4 sowie die Ausnehmungen 16 der Platte 5 und die Ausnehmungen 18 der Platte 4 übereinander zu liegen. In diesem Fall ist der Durchlass in Achsrichtung der Farbkastenwalze 1 gesehen am grössten, das heisst am breitesten. Somit werden für die betreffende Farbzone Farbringe mit maximaler Breite entsprechend dem maximalen Farbbedarf erzeugt. Werden zwei übereinanderliegende Platten 4, 5 in Achsrichtung der Farbkastenwalze 1 so gegeneinander verschoben, dass eine Erhebung bzw. ein Stützbereich 17 der Platte 4 exakt oberhalb der zugehörigen darunterliegenden Ausnehmungen 16 der Platte 5 zu liegen kommt, was dem minimalen Farbbedarf in der jeweiligen Farbzone entspricht, so ergibt sich praktisch kein Durchlass,das heisst es kann kein Farbring auf der Farbkastenwalze erzeugt werden. Wie bereits erläutert, können mit Hilfe des Exzenters 11 jeweils die unteren Platten 5, bezogen auf die zugehörige obere Platte 4, feinfühlig in jede beliebige Stellung zwischen dem erwähnten Minimal- und Maximalbereich gebracht werden, wodurch Farbringe mit der jeweils erforderlichen Breite erzeugt werden können.If the plates 4 and 5 lie congruently one above the other, the support areas 15 of the plate 5 and support areas 17 of the plate 4 as well as the recesses 16 of the plate 5 and the recesses 18 of the plate 4 also lie one above the other. In this case, the passage is the largest, that is to say the widest, in the axial direction of the ink fountain roller 1. Color rings with a maximum width corresponding to the maximum color requirement are thus generated for the color zone in question. If two plates 4, 5 lying one above the other are displaced relative to one another in the axial direction of the ink fountain roller 1 such that an elevation or a supporting region 17 of the plate 4 comes to lie exactly above the associated recesses 16 of the plate 5, which corresponds to the minimum ink requirement in the respective ink zone , there is practically no passage, which means that no ink ring can be produced on the ink fountain roller. As already explained, with the aid of the eccentric 11, the lower plates 5, relative to the associated upper plate 4, can be sensitively brought into any position between the minimum and maximum ranges mentioned, as a result of which color rings with the required width can be produced.

BezugszeichenlisteReference symbol list

  • 1 Farbkastenwalze1 ink fountain roller
  • 2 Farbkastenoberteil2 color box top
  • 3 Farbkastenunterteil3 color box lower part
  • 4 obere Platte4 top plate
  • 5 untere Platte5 lower plate
  • 6 Feder6 spring
  • 7 Bolzen7 bolts
  • 8 Schraube8 screw
  • 9 Feder9 spring
  • 10 Stützbolzen10 support bolts
  • 11 Exzenter11 eccentrics
  • 12 Untersetzungsgetriebe12 reduction gears
  • 13 Farbzonenstellmotor13 ink zone actuator
  • 14 Farbzonenstellschraube14 ink zone adjusting screw
  • 15 Ausnehmung15 recess
  • 16 Vertiefung16 deepening
  • 17 Ausnehmung17 recess
  • 18 Vertiefung18 deepening
  • 19 Langloch19 slot
  • 20 Langloch20 slot
  • 21 Führungen21 guided tours

Claims (7)

1. Ink duct (2, 3) for rotary printing machines, having an ink dosing device incorporating ink dosing elements (4, 5) arranged adjacently to each other in the axial direction, for the adjustment in zones of the width on the duct roller (1) of ink strips to be transferred, characterised in that each ink dosing element (4, 5) comprises two superimposed plates (4, 5) each resiliently abutting the duct roller (1) with its front edge (A, B), and in that the front edges (A, B) of the two plates (4, 5) have an equal number of recesses (16,18), in that at least one plate (5) can be moved by means of an adjustment device (11, 12, 13) in the axial direction of the duct roller (1), so that the relative axial position of the recesses (16, 18) with respect to each other determines in each case the width on the duct roller (1) of the ink strip to be transferred.
2. Ink duct according to claim 1, characterised in that the adjustment device (11, 12,13) includes an eccentric (11) engaging through a reduction gearing (12) in a slot (15) of the axially movable plate (5).
3. Ink duct according to claim 1 or 2, characterised in that each plate (4, 5) has several recesses (16,18) on the front edge (A, B).
4. Ink duct according to claim 3, characterised in that the recesses (18, 16) are of rectangular shape.
5. Ink duct according to one of the preceding claims, characterised in that the axially movable plate (5) is arranged below the plate (4) arranged radially on the duct roller (1).
6. Ink duct according to one of the preceding claims, characterised in that the plates (4, 5) are of different lengths and can each be pressed against the duct roller (1) by at least two springs (6,9).
7. Ink duct according to one of the preceding claims, characterised in that the width of the axially movable plate (5) corresponds to the ink zone division and the axially fixed plate (4) has approximately the same width as, or a whole number multiple of, the inkzone division.
EP85106468A 1984-06-28 1985-05-25 Ink fountain for a rotary printing press with an ink metering device Expired EP0166955B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3423735 1984-06-28
DE3423735A DE3423735C1 (en) 1984-06-28 1984-06-28 Ink fountain for rotary printing machines with an ink metering device

Publications (3)

Publication Number Publication Date
EP0166955A2 EP0166955A2 (en) 1986-01-08
EP0166955A3 EP0166955A3 (en) 1987-09-16
EP0166955B1 true EP0166955B1 (en) 1988-12-07

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Application Number Title Priority Date Filing Date
EP85106468A Expired EP0166955B1 (en) 1984-06-28 1985-05-25 Ink fountain for a rotary printing press with an ink metering device

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US (1) US4587899A (en)
EP (1) EP0166955B1 (en)
JP (1) JPS6114960A (en)
DE (2) DE3423735C1 (en)

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US5279223A (en) * 1991-06-28 1994-01-18 Kabushiki Kaisha Tokyo Kikai Seisakusho Ink feed adjusting apparatus for use in ink supply equipment
US5438927A (en) * 1994-03-09 1995-08-08 R. R. Donnelley & Sons Company Ink fountain assembly
US5738724A (en) * 1996-08-06 1998-04-14 Westvaco Corporation Actuator assembly for coater blade load adjustment
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Also Published As

Publication number Publication date
EP0166955A2 (en) 1986-01-08
DE3566639D1 (en) 1989-01-12
JPS6114960A (en) 1986-01-23
JPH0554432B2 (en) 1993-08-12
DE3423735C1 (en) 1985-06-05
EP0166955A3 (en) 1987-09-16
US4587899A (en) 1986-05-13

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