EP1044110B1 - Arrangement for the inker unit of a rotary press - Google Patents

Arrangement for the inker unit of a rotary press Download PDF

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Publication number
EP1044110B1
EP1044110B1 EP98966798A EP98966798A EP1044110B1 EP 1044110 B1 EP1044110 B1 EP 1044110B1 EP 98966798 A EP98966798 A EP 98966798A EP 98966798 A EP98966798 A EP 98966798A EP 1044110 B1 EP1044110 B1 EP 1044110B1
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EP
European Patent Office
Prior art keywords
grooves
arrangement according
roller
ink
ink metering
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Expired - Lifetime
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EP98966798A
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German (de)
French (fr)
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EP1044110A1 (en
Inventor
Karl Robert SCHÄFER
Georg Schneider
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Koenig and Bauer AG
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Koenig and Bauer AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/02Ducts, containers, supply or metering devices
    • B41F31/027Ink rail devices for inking ink rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/26Construction of inking rollers

Definitions

  • the invention relates to an arrangement of a working squeegee on a paint-guiding roller according to the preamble of Claim 1.
  • DE 37 04 433 A1 is a short inking unit for Offset printing inks with one ink feed and one Doctor arrangement with a negative working doctor for one Ink metering roller known.
  • DE 42 13 662 C2 shows a chambered doctor blade in which the Working squeegee with a negative angle of attack of approx. 40 ° hired on the outer surface of a paint-guiding roller is.
  • the surface of this roller is in the form of integrated wells structured.
  • the invention has for its object an inking unit with at least one on a roller with structured Negative surface squeegee too create in which undesirable color deposits of Printing ink on the outer surface facing the roller the squeegee can be largely avoided.
  • the invention is based on several variants shown in the drawing.
  • An inking unit e.g. B. a short inking unit, one Rotary press shows in its shortest Construction a paint box 2, an ink metering roller 1 and an inking roller.
  • the surface 12 of the Ink metering roller 1 is structured.
  • the color box 2 consists of a left and a right side wall 3; 4 and is left and right by a front wall 6; 7 completed.
  • the left side wall 3 carries one at the bottom Working squeegee 8, which is negative on an inking roller 1, d. H. is turned against their direction of rotation.
  • the outer working edge 11 of the doctor blade 8 touches the Surface 12 or the circumference of the ink metering roller 1.
  • the working squeegee 8 can be made of metal, e.g. B. spring steel, made of plastic, e.g. B. PE or PMA or from one glass fiber reinforced plastic.
  • Alpha denotes an acute opening angle, the two tangents 13 intersecting at a point A. and include 14.
  • the second tangent 13 is connected to the ink fountain 2 facing outer surface of the working squeegee 8 in Working position and has contact with the Point of contact A.
  • the opening angle "Alpha” is called “Angle of attack alpha" of the working squeegee 8 in Designated working position on the ink fountain roller 1 and is preferably in the range equal to or greater than 10 ° and equal / less than 35 °.
  • the working squeegee 8 has a color box facing Inner surface 30 and one of the ink metering roller 1 facing, d. H. color box facing away, second Outer surface 31 on.
  • the ink fountain 2 with squeegees 8; 16 is above the Ink metering roller 1 arranged, d. H. in I. or II. Squares related to a right angle Coordinate system whose origin is on the The axis of rotation 18 of the ink metering roller 1 lies (FIG. 1 and 2).
  • the first working squeegee 8 can - in the direction of rotation Dosing roller 1 seen -, one or more Doctor blade holders 34 attached working doctor blades 32 be connected downstream (Fig. 7).
  • the first working squeegee 8 does not have to be part of a Color box 2. It can, detached from one Ink feed, printing ink from one doctor blade-loaded ink metering roller 1, the is then collected in a paint container 33.
  • the ink metering roller 1 with which the working squeegee 8 interacts has, for. B. a tubular steel jacket 19 on which a ceramic layer 21 with a thickness c, z. B. applied from over 100 microns to 400 microns, z. B. is sprayed.
  • This ceramic layer 21 has a structured surface 12 through the incorporation of grooves 22 (hashes) of any kind, in particular multi-spiral grooves 22. They can also be designed as a single helix, double helix or multiple helix -
  • FIG. 4 shows a simplified illustration of a multi-helix groove on an ink metering roller 1.
  • the multi-helix grooves 22 extend between the end faces 36; 37 of the ink metering roller 1. You can use a depth d, e.g. B. of 20 microns. Between 100 and 400 grooves can be provided per centimeter of the axial length of the ink metering roller 1 (FIG. 3).
  • multi-spiral grooves 22 are, as already mentioned, in the surface 12 of the ink metering roller 1 z. B. incorporated all round.
  • the multi-spiral grooves 22 have a pitch angle beta.
  • the pitch angle beta can range from 0 to 20 ° (Fig. 2, 4 to 6 and 8).
  • the slope can be right (Fig. 2) or rising to the left (Fig. 4).
  • Ink metering roller 23 a plurality of endless Ring grooves 24 running around the circumference of their surface.
  • At the angle of inclination "gamma” is the angle understood that which is surrounded by ring grooves 24 Surface with a vertical plane, with which the axis of rotation 18 of the ring groove 24 (and thus the ink metering roller 1) forms a right angle.
  • the angle of inclination gamma is preferably in one Range from 0 ° to 20 °.
  • Ends 28 of the helical grooves 27 offset from one another arranged. 6 is not to scale.
  • the printing ink can also have a high viscosity of larger than 10 Pa x s.
  • grooves 22 - each through one or more crosspieces 38 be interrupted. This makes elongated "Cup" 39 formed.
  • the ink metering roller 1; 23; 26 has an oleophilic coat. It can be made of ceramic material, e.g. B. Cr 2 O 3 , made of plastic, for. B. PE or polyamide, consist of a glass ceramic material or a sufficiently hard oleophilic metal or metal alloy.
  • ceramic material e.g. B. Cr 2 O 3
  • plastic for. B. PE or polyamide
  • the grooves 22; 24; 27 can all with one lowered layer 41 of oleophilic metal, e.g. B. Copper or plastic, e.g. B. Rilsan filled.
  • oleophilic metal e.g. B. Copper or plastic, e.g. B. Rilsan filled.
  • the aforementioned wells 39 can also - as in Fig. 3, right groove 22 or cup filled shown - e.g. B. by means of a layer 41 of copper be filled up to a height d / 2.

Landscapes

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

Description

Die Erfindung betrifft eine Anordnung einer Arbeitsrakel an einer farbführenden Walze gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an arrangement of a working squeegee on a paint-guiding roller according to the preamble of Claim 1.

Durch die DE 37 04 433 A1 ist ein Kurzfarbwerk für Offsetdruckfarben mit einer Farbzuführung und einer Rakelanordnung mit einer negativen Arbeitsrakel für eine Farbdosierwalze bekannt.DE 37 04 433 A1 is a short inking unit for Offset printing inks with one ink feed and one Doctor arrangement with a negative working doctor for one Ink metering roller known.

Die DE 42 13 662 C2 zeigt eine Kammerrakel, bei der die Arbeitsrakel in einem negativen Anstellwinkel von ca 40° an die Mantelfläche einer farbführenden Walze angestellt ist. Die Mantelfläche dieser Walze ist in Form von eingearbeiteten Näpfchen strukturiert.DE 42 13 662 C2 shows a chambered doctor blade in which the Working squeegee with a negative angle of attack of approx. 40 ° hired on the outer surface of a paint-guiding roller is. The surface of this roller is in the form of integrated wells structured.

Der Erfindung liegt die Aufgabe zugrunde, ein Farbwerk mit mindestens einer an eine Walze mit strukturierter Oberfläche negativ angestellten Arbeitsrakel zu schaffen, bei welchem unerwünschte Farbablagerungen von Druckfarbe auf der der Walze zugewandten äußeren Fläche der Arbeitsrakel weitestgehenst vermieden werden können.The invention has for its object an inking unit with at least one on a roller with structured Negative surface squeegee too create in which undesirable color deposits of Printing ink on the outer surface facing the roller the squeegee can be largely avoided.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. The object is achieved by the features of Claim 1 solved.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß es an der Außenseite von Rakeln insbesondere von Arbeitsrakeln nicht zu einer ungewollten Farb-Tröpfchenbildung kommt. Hierdurch wird vermieden, daß die Farb-Tröpfchen ab einer bestimmten Größe sich von der Außenseite der Arbeitsrakel lösen und auf die nachfolgende Farbwerkwalze gelangen, was schließlich zu einer örtlichen Überfärbung im bedruckten Bogen führt. Das gilt auch bei der Verwendung von hochviskoser Druckfarbe mit einer Viskosität von größer als 2 Pa x s, insbesondere ab 10 Pa x s.The advantages that can be achieved with the invention exist especially in that it is on the outside of squeegees especially from squeegees not to one unwanted color droplet formation comes. This will avoided the color droplets from a certain one Size come off the outside of the squeegee and what on the subsequent inking roller finally to local over-staining in the printed Bow leads. This also applies when using highly viscous printing ink with a viscosity of greater than 2 Pa x s, especially from 10 Pa x s.

Die Erfindung ist anhand mehrerer Ausführungsvarianten in der Zeichnung dargestellt.The invention is based on several variants shown in the drawing.

Es zeigen:

Fig. 1
einen Querschnitt durch die schematische Darstellung eines Farbwerkes mit einer Farbdosierwalze mit strukturierter Oberfläche und auf sie aufgesetzten Farbkasten mit mindestens einer an sie negativ angestellten Arbeitsrakel;
Fig. 2
eine Vorderansicht der Farbdosierwalze nach Fig. 1 in verkleinerter Darstellung;
Fig. 3
eine Einzelheit "Z" nach Fig. 2 im Schnitt;
Fig. 4
eine schematische perspektivische Darstellung einer schraubenlinienförmigen Anordnung der in der Mantelfläche der Farbdosierwalze befindlichen Rillen;
Fig. 5
eine Darstellung analog Fig. 4, jedoch mit einer ringförmigen Anordnung der Rillen;
Fig. 6
eine Darstellung analog Fig. 4, jedoch mit einer unterbrochenen schraubenlinienförmigen Anordnung der Rillen;
Fig. 7
eine schematische Darstellung einer Ausführungsvariante zu Fig. 1;
Fig. 8
eine schematisch stark vergrößerte Darstellung einer Ausführungsvariante einer Farbdosierwalze nach den Fig. 2 und 3.
Show it:
Fig. 1
a cross section through the schematic representation of an inking unit with an ink metering roller with a structured surface and ink fountain placed on it with at least one working squeegee negatively positioned on it;
Fig. 2
a front view of the ink metering roller of Figure 1 in a reduced view.
Fig. 3
a detail "Z" of Figure 2 in section.
Fig. 4
is a schematic perspective view of a helical arrangement of the grooves located in the lateral surface of the ink metering roller;
Fig. 5
a representation analogous to Figure 4, but with an annular arrangement of the grooves.
Fig. 6
a representation analogous to Figure 4, but with an interrupted helical arrangement of the grooves.
Fig. 7
a schematic representation of an embodiment variant of FIG. 1;
Fig. 8
a schematic greatly enlarged representation of an embodiment of an ink metering roller according to FIGS. 2 and 3.

Ein Farbwerk, z. B. ein Kurzfarbwerk, einer Rotationsdruckmaschine weist in seiner kürzesten Bauweise einen Farbkasten 2, eine Farbdosierwalze 1 und eine Farbauftragwalze auf. Die Oberfläche 12 der Farbdosierwalze 1 ist strukturiert. Der Farbkasten 2 besteht aus einer linken und einer rechten Seitenwand 3; 4 und wird links und rechts durch je eine Stirnwand 6; 7 abgeschlossen. Die linke Seitenwand 3 trägt unten eine Arbeitsrakel 8, welche negativ an eine Farbdosierwalze 1, d. h. entgegen ihrer Drehrichtung angestellt ist. Die äußere Arbeitskante 11 der Arbeitsrakel 8 berührt die Oberfläche 12 bzw. den Umfang der Farbdosierwalze 1.An inking unit, e.g. B. a short inking unit, one Rotary press shows in its shortest Construction a paint box 2, an ink metering roller 1 and an inking roller. The surface 12 of the Ink metering roller 1 is structured. The color box 2 consists of a left and a right side wall 3; 4 and is left and right by a front wall 6; 7 completed. The left side wall 3 carries one at the bottom Working squeegee 8, which is negative on an inking roller 1, d. H. is turned against their direction of rotation. The outer working edge 11 of the doctor blade 8 touches the Surface 12 or the circumference of the ink metering roller 1.

Die Arbeitsrakel 8 kann aus Metall, z. B. Federstahl, aus Kunststoff, z. B. PE oder PMA oder aus einem glasfaserverstärkten Kunststoff bestehen.The working squeegee 8 can be made of metal, e.g. B. spring steel, made of plastic, e.g. B. PE or PMA or from one glass fiber reinforced plastic.

Mit "Alpha" ist ein spitzer öffnungswinkel bezeichnet, den zwei sich in einem Punkt A schneidende Tangenten 13 und 14 einschließen."Alpha" denotes an acute opening angle, the two tangents 13 intersecting at a point A. and include 14.

Die farbkastenabgewandte Kante der unteren Stirnseite der Arbeitsrakel 8 berührt in Arbeitsstellung einen Mantel der Farbkastenwalze 1 (= Farbdosierwalze) in Linienberührung. In einem Berührungspunkt A dieser Linienberührungslinie wird die erste Tangente 14 an den Mantel der Farbkastenwalze 1 gelegt.The edge of the lower front side facing away from the ink fountain the working squeegee 8 touches one in the working position Jacket of the ink fountain roller 1 (= ink metering roller) in Line contact. At a point of contact A this Line contact line is the first tangent 14 to the Coat of the ink fountain roller 1 placed.

Die zweite Tangente 13 wird an die dem Farbkasten 2 abgewandte äußere Fläche der Arbeitsrakel 8 in Arbeitsstellung gelegt und hat Berührung mit dem Berührungspunkt A. Der öffnungswinkel "Alpha" wird als "Anstellwinkel Alpha" des Arbeitsrakels 8 in Arbeitsstellung an die Farbkastenwalze 1 bezeichnet und liegt vorzugsweise im Bereich gleich/größer 10° und gleich/kleiner 35°.The second tangent 13 is connected to the ink fountain 2 facing outer surface of the working squeegee 8 in Working position and has contact with the Point of contact A. The opening angle "Alpha" is called "Angle of attack alpha" of the working squeegee 8 in Designated working position on the ink fountain roller 1 and is preferably in the range equal to or greater than 10 ° and equal / less than 35 °.

Die Arbeitsrakel 8 weist eine farbkastenzugewandte Innenfläche 30 und eine der Farbdosierwalze 1 zugewandte, d. h. farbkastenabgewandte, zweite Außenfläche 31 auf.The working squeegee 8 has a color box facing Inner surface 30 and one of the ink metering roller 1 facing, d. H. color box facing away, second Outer surface 31 on.

Unten an der rechten Seitenwand 4 ist eine Schließrakel 16 befestigt. Ihre Arbeitskante 17 ist an die Oberfläche 12 der Farbdosierwalze 1 angedrückt.At the bottom of the right side wall 4 is a closing doctor 16 attached. Your working edge 17 is on the surface 12 of the ink metering roller 1 pressed.

Der Farbkasten 2 mit Rakeln 8; 16 ist oberhalb der Farbdosierwalze 1 angeordnet, d. h. im I. oder II. Quadraten, bezogen auf ein rechtwinkliges Koordinatensystem, dessen Ursprung auf der Rotationsachse 18 der Farbdosierwalze 1 liegt (Fig. 1 und 2).The ink fountain 2 with squeegees 8; 16 is above the Ink metering roller 1 arranged, d. H. in I. or II. Squares related to a right angle Coordinate system whose origin is on the The axis of rotation 18 of the ink metering roller 1 lies (FIG. 1 and 2).

Der ersten Arbeitsrakel 8 können, - in Drehrichtung der Farbdosierwalze 1 gesehen -, eine oder mehrere an Rakelhaltern 34 befestigte Arbeitsrakel 32 nachgeschaltet sein (Fig. 7).The first working squeegee 8 can - in the direction of rotation Dosing roller 1 seen -, one or more Doctor blade holders 34 attached working doctor blades 32 be connected downstream (Fig. 7).

Die erste Arbeitsrakel 8 muß nicht Bestandteil eines Farbkastens 2 sein. Sie kann, losgelöst von einer Farbzuführung, Druckfarbe von einer druckfarbebefrachteten Farbdosierwalze 1 abrakeln, die dann in einem Farbbehälter 33 aufgefangen wird.The first working squeegee 8 does not have to be part of a Color box 2. It can, detached from one Ink feed, printing ink from one doctor blade-loaded ink metering roller 1, the is then collected in a paint container 33.

Die Farbdosierwalze 1 mit der die Arbeitsrakel 8 zusammenwirkt, weist z. B. einen rohrförmigen Stahlmantel 19 auf, auf welchem eine Keramikschicht 21 mit einer Dicke c, z. B. von über 100 µm bis 400 µm aufgetragen, z. B. aufgespritzt ist. Diese Keramikschicht 21 weist eine strukturierte Oberfläche 12 durch das Einarbeiten von Rillen 22 (Haschuren) jeglicher Art, insbesondere Mehrwendel-Rillen 22, auf. Sie können auch als einfache Wendel, Doppelwendel oder Vielfachwendel ausgeführt sein - Fig. 4 zeigt eine vereinfachte Darstellung einer Mehrwendel-Rille auf einer Farbdosierwalze 1. Die Mehrwendel-Rillen 22 erstrecken sich zwischen den Stirnseiten 36; 37 der Farbdosierwalze 1.
Sie können eine Tiefe d, z. B. von 20 µm haben. Pro Zentimeter der axialen Länge der Farbdosierwalze 1 können zwischen 100 bis 400 Rillen vorgesehen sein (Fig. 3).
The ink metering roller 1 with which the working squeegee 8 interacts has, for. B. a tubular steel jacket 19 on which a ceramic layer 21 with a thickness c, z. B. applied from over 100 microns to 400 microns, z. B. is sprayed. This ceramic layer 21 has a structured surface 12 through the incorporation of grooves 22 (hashes) of any kind, in particular multi-spiral grooves 22. They can also be designed as a single helix, double helix or multiple helix - FIG. 4 shows a simplified illustration of a multi-helix groove on an ink metering roller 1. The multi-helix grooves 22 extend between the end faces 36; 37 of the ink metering roller 1.
You can use a depth d, e.g. B. of 20 microns. Between 100 and 400 grooves can be provided per centimeter of the axial length of the ink metering roller 1 (FIG. 3).

Diese Mehrwendel-Rillen 22 sind , - wie schon gesagt -, in die Oberfläche 12 der Farbdosierwalze 1 z. B. umlaufend eingearbeitet. Die Mehrwendel-Rillen 22 haben einen Steigungswinkel Beta.These multi-spiral grooves 22 are, as already mentioned, in the surface 12 of the ink metering roller 1 z. B. incorporated all round. The multi-spiral grooves 22 have a pitch angle beta.

Der Steigungswinkel Beta kann im Bereich von 0 bis 20° (Fig. 2, 4 bis 6 und 8) liegen. Die Neigung kann rechts (Fig. 2) oder links ansteigend (Fig. 4) sein.The pitch angle beta can range from 0 to 20 ° (Fig. 2, 4 to 6 and 8). The slope can be right (Fig. 2) or rising to the left (Fig. 4).

Bei einer weiteren Ausführungsvariante (Fig. 5) hat die Farbdosierwalze 23 eine Mehrzahl von endlosen Ring-Rillen 24 um den Umfang ihrer Oberfläche laufend.In a further embodiment variant (Fig. 5) Ink metering roller 23 a plurality of endless Ring grooves 24 running around the circumference of their surface.

Sie sind in einem Neigungswinkel "Gamma" geneigt.They are inclined at a "gamma" angle.

Unter dem Neigungswinkel "Gamma" wird der Winkel verstanden, den die durch Ring-Rillen 24 umschlossene Fläche jeweils mit einer senkrechten Ebene bildet, mit der die Rotationsachse 18 der Ring-Rille 24 (und damit der Farbdosierwalze 1) einen rechten Winkel bildet.At the angle of inclination "gamma" is the angle understood that which is surrounded by ring grooves 24 Surface with a vertical plane, with which the axis of rotation 18 of the ring groove 24 (and thus the ink metering roller 1) forms a right angle.

Der Neigungswinkel Gamma liegt vorzugsweise in einem Bereich von 0° bis 20°.The angle of inclination gamma is preferably in one Range from 0 ° to 20 °.

Nach einer weiteren Ausführungsvariante (Fig. 6) hat die Farbdosierwalze 26 schraubenlinienförmige Rillen 27, die beliebig oft unterbrochen sind. Hierbei sind jeweils die Enden 28 der Einwendel-Rillen 27 zueinander versetzt angeordnet. Die Fig. 6 ist nicht maßstabgerecht.According to a further embodiment variant (Fig. 6) Ink metering roller 26 helical grooves 27, the are interrupted as often as required. Here are the Ends 28 of the helical grooves 27 offset from one another arranged. 6 is not to scale.

Die Druckfarbe kann eine hohe Viskosität von auch größer als 10 Pa x s haben.The printing ink can also have a high viscosity of larger than 10 Pa x s.

Es bilden sich im arbeitskantennahen Bereich, an der freiliegenden Außenfläche 31 der Arbeitsrakel 8 keine ungewollten Tröpfchen aus, welche zu einer Überfärbung der Druckprodukte führen können.They form in the area close to the working edge, on the exposed outer surface 31 of the working squeegee 8 none unwanted droplets, which lead to over-coloring of printed products.

Nach einer weiteren Ausführungsvariante (Fig. 8) können die vorbeschriebenen zwischen Stegen 15 liegenden Rillen 22; 24; 27 - nachfolgend mit Rillen 22 bezeichnet - jeweils durch einen oder mehrere Querstege 38 unterbrochen sein. Hierdurch werden langgestreckte "Näpfchen" 39 gebildet.According to a further embodiment variant (Fig. 8) the above-described grooves lying between webs 15 22; 24; 27 - hereinafter referred to as grooves 22 - each through one or more crosspieces 38 be interrupted. This makes elongated "Cup" 39 formed.

Die Farbdosierwalze 1; 23; 26 hat einen oleophilen Mantel. Er kann aus Keramikwerkstoff, z. B. Cr2O3, aus Kunststoff, z. B. PE oder Polyamid, aus einem Glaskeramikwerkstoff oder auch aus einem ausreichend harten oleophilen Metall bzw. Metallegierung bestehen.The ink metering roller 1; 23; 26 has an oleophilic coat. It can be made of ceramic material, e.g. B. Cr 2 O 3 , made of plastic, for. B. PE or polyamide, consist of a glass ceramic material or a sufficiently hard oleophilic metal or metal alloy.

Die Rillen 22; 24; 27 können ganz mit einer tiefergelegten Schicht 41 aus oleophilem Metall, z. B. Kupfer oder Kunststoff, z. B. Rilsan gefüllt sein.The grooves 22; 24; 27 can all with one lowered layer 41 of oleophilic metal, e.g. B. Copper or plastic, e.g. B. Rilsan filled.

In die vorgenannten gefüllten Rillen 22; 24; 27 können Näpfchen 39 eingebracht werden.In the aforementioned filled grooves 22; 24; 27 can Cups 39 are introduced.

Die vorgenannten Näpfchen 39 können aber auch - wie in Fig. 3, rechte Rille 22 bzw. Näpfchen gefüllt dargestellt - z. B. mittels einer Schicht 41 aus Kupfer bis zu einer Höhe d/2 gefüllt sein. The aforementioned wells 39 can also - as in Fig. 3, right groove 22 or cup filled shown - e.g. B. by means of a layer 41 of copper be filled up to a height d / 2.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Farbdosierwalzeink metering
22
Farbkastenpaintbox
33
Seitenwand, linke (2)Sidewall, left (2)
44
Seitenwand, rechte (2)Right side panel (2)
55
--
66
Stirnwand (2)End wall (2)
77
Stirnwand (2)End wall (2)
88th
Arbeitsrakel (2)Squeegee (2)
99
--
1010
--
1111
Arbeitskante (8)Working edge (8)
1212
Oberfläche, Umfang (1; 23, 26)Surface, circumference (1; 23, 26)
1313
Tangente (8)Tangent (8)
1414
Tangente (r)Tangent
1515
Stegweb
1616
Schließrakel (2)Closing squeegee (2)
1717
Arbeitskante (16)Working edge (16)
1818
Rotationsachse (1; 23; 26)Axis of rotation (1; 23; 26)
1919
Stahlmantel (1)Steel jacket (1)
2020
Ebene (1)Level 1)
2121
Keramikschicht (19)Ceramic layer (19)
2222
Mehrwendel-Rille (21)Multi-spiral groove (21)
2323
Farbdosierwalzeink metering
2424
Ring-Rille (23)Ring groove (23)
2525
--
2626
Farbdosierwalzeink metering
2727
Einwendel-Rille (26) Single spiral groove (26)
2828
Ende (7)End (7)
2929
--
3030
Innenfläche (8)Inner surface (8)
3131
Außenfläche (8)Outside (8)
3232
Arbeitsrakelworking doctor
3333
Farbbehälterpaint container
3434
Rakelhälter (32)Doctor blade holder (32)
3535
--
3636
Stirnseite (1; 23; 26)End face (1; 23; 26)
3737
Stirnseite (1; 23; 26)End face (1; 23; 26)
3838
Quersteg (22)Crossbar (22)
3939
Näpfchen (22)Cells (22)
4040
--
4141
Schichtlayer
AA
Berührungspunkt (13; 14)Point of contact (13; 14)
cc
Dicke (21)Thick (21)
dd
Höhe (22)Height (22)
rr
Radius (1)Radius (1)
Alphaalpha
Anstellwinkel (8; 32)Angle of attack (8; 32)
Betabeta
Steigungswinkel (1; 23; 26)Pitch angle (1; 23; 26)
Gammagamma
Neigungswinkel (1; 23; 26)Tilt angle (1; 23; 26)

Claims (12)

  1. Arrangement of a working doctor-blade (8; 32) at a negative angle of incidence (alpha) against an ink carrying roller (1; 23; 26) belonging to an inking unit of a rotary printing press, wherein the roller (1; 23; 26) has a structured circumferential face, characterised in that the angle of incidence (alpha) is in range from 10° to 35°, and in that the roller (1; 23; 26) has in its circumferential face grooves (22; 24; 27) of an endless-line or helical-line type having an angle of inclination (gamma) or pitch angle (beta) in the range from 0° to plus/minus 20°.
  2. Arrangement according to claim 1, characterised in that the working doctor-blade (8) is part of an ink duct (2).
  3. Arrangement according to claim 1, characterised in that, looking in the direction of rotation of the roller (1; 23; 26), the first working doctor-blade (32) has a number of further working doctor-blades downstream of it.
  4. Arrangement according to claim 1, characterised in that the grooves (22) are in the form of multi-turn grooves (22).
  5. Arrangement according to claim 1, characterised in that, being interrupted as often as desired, the grooves (22) are in the form of single-turn grooves (27).
  6. Arrangement according to claims 1 to 3, characterised in that the grooves (24) in the ink metering roller (23) are in the form of annular grooves (24).
  7. Arrangement according to claims 1, 4, 5 and 6, characterised in that transverse lands (38) are arranged within each of the grooves (22; 24; 27).
  8. Arrangement according to claims 1 to 7, characterised in that the ink metering roller (1; 23; 26) is composed of glass-ceramic material.
  9. Arrangement according to claims 1 to 8, characterised in that the ink metering roller (1; 23; 26) is composed of ceramic material.
  10. Arrangement according to claims 1 to 7, characterised in that the ink metering roller (1; 23; 26) is composed of plastics material.
  11. Arrangement according to claims 1 and 7, characterised in that the grooves (22; 24, 27) are partly or completely filled with an oleophilic layer (41) of metal or plastics material.
  12. Arrangement according to claim 11, characterised in that cells (39) are formed in the layer (41).
EP98966798A 1997-12-24 1998-12-21 Arrangement for the inker unit of a rotary press Expired - Lifetime EP1044110B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19757897 1997-12-24
DE19757897A DE19757897C1 (en) 1997-12-24 1997-12-24 Arrangement for an inking unit of a rotary printing press
PCT/DE1998/003758 WO1999033666A1 (en) 1997-12-24 1998-12-21 Arrangement for the inker unit of a rotary press

Publications (2)

Publication Number Publication Date
EP1044110A1 EP1044110A1 (en) 2000-10-18
EP1044110B1 true EP1044110B1 (en) 2003-09-03

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EP98966798A Expired - Lifetime EP1044110B1 (en) 1997-12-24 1998-12-21 Arrangement for the inker unit of a rotary press

Country Status (6)

Country Link
US (1) US6439116B1 (en)
EP (1) EP1044110B1 (en)
JP (1) JP3318325B2 (en)
CN (1) CN1180938C (en)
DE (2) DE19757897C1 (en)
WO (1) WO1999033666A1 (en)

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EP1543969A1 (en) 2003-12-19 2005-06-22 Koenig & Bauer Aktiengesellschaft Printing machine with at least one printing unit, screen rollers having groove

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EP1543969A1 (en) 2003-12-19 2005-06-22 Koenig & Bauer Aktiengesellschaft Printing machine with at least one printing unit, screen rollers having groove
US7343855B2 (en) 2003-12-19 2008-03-18 Koenig & Bauer Aktiengesellschaft Offset waterless printing press having a screen roller with ceramic coating and surface markings

Also Published As

Publication number Publication date
EP1044110A1 (en) 2000-10-18
WO1999033666A1 (en) 1999-07-08
CN1284028A (en) 2001-02-14
JP3318325B2 (en) 2002-08-26
DE59809517D1 (en) 2003-10-09
DE19757897C1 (en) 1999-07-22
JP2001526993A (en) 2001-12-25
CN1180938C (en) 2004-12-22
US6439116B1 (en) 2002-08-27

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