EP0865917A2 - Ink rail device - Google Patents

Ink rail device Download PDF

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Publication number
EP0865917A2
EP0865917A2 EP98107632A EP98107632A EP0865917A2 EP 0865917 A2 EP0865917 A2 EP 0865917A2 EP 98107632 A EP98107632 A EP 98107632A EP 98107632 A EP98107632 A EP 98107632A EP 0865917 A2 EP0865917 A2 EP 0865917A2
Authority
EP
European Patent Office
Prior art keywords
anilox roller
doctor blade
side jaws
chamber
face
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.)
Withdrawn
Application number
EP98107632A
Other languages
German (de)
French (fr)
Other versions
EP0865917A3 (en
Inventor
Norbert Georg Weisbrod
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
Original Assignee
Koenig and Bauer Albert AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0865917A2 publication Critical patent/EP0865917A2/en
Publication of EP0865917A3 publication Critical patent/EP0865917A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/047—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades provided with end dams
    • 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
    • B41F31/027—Ink rail devices for inking ink rollers

Definitions

  • the invention relates to a doctor blade with one Anilox roller provided inking unit Rotary printing machine according to the preamble of Claim 1.
  • a chambered doctor blade is known from EP 04 38 731 A2.
  • a ink chamber of the chamber doctor blade is made on the front by Sealed side jaws. These side jaws are each with one that can be adjusted to an anilox roller Sealant provided that a curvature Shell surface of the anilox roller is adapted.
  • This Sealants are made of elastic material and their contact surface to the outer surface of the anilox roller coated with a low-friction material.
  • the disadvantage here is that coating measures are necessary to create a low-friction contact surface Obtain sealant for anilox roller.
  • the US 51 50 651 A shows a generic Chamber doctor blade, whose ink chamber by means of side jaws is sealed. These side jaws are with as Provide lubrication pocket-like depressions.
  • the invention has for its object a Chamber doctor blade one with an anilox roller To create inking unit of a rotary printing press.
  • Friction is advantageously minimized by the chambered doctor blade according to the invention, as a result of which only little heat is generated. This minimizes wear on side jaws as well as on the outer surface of an anilox roller, which results in a longer service life and machine downtime tents are avoided.
  • the low heat development prevents gas bubbles from forming in the area of the side jaws, which leads to improved ink guidance of the anilox roller and thus increases the print quality.
  • no elaborate sliding linings are necessary. Due to the automatically generated minimal gap, only a minimal amount of ink emerges from the chamber doctor blade, which largely prevents the formation of beads and thus splashing of the anilox roller.
  • the chambered doctor blade according to the invention is in the drawing shown and is described in more detail below.
  • a chambered doctor blade 1 interacts with an anilox roller 2 of a short inking unit.
  • the chambered doctor blade 1 extends axially parallel to the anilox roller 2.
  • a plurality of chambered doctor blades 1, for example two chambered doctor blades 1 each extending over half the length of the anilox roller length, can be provided over a length of the anilox roller 2. However, it can also be provided, for example, printing plate-wide chamber doctor blade 1 in order to use a plurality of colors on the anilox roller 2 or to switch off the ink supply zone by zone.
  • the chambered doctor blade 1 consists essentially of a base body 3, a working doctor blade 4, a closing doctor blade 6 and a right or left side jaw 7, 8.
  • the base body 3 is provided with a depression 11 and its ends 11, 12 near the rollers point with respect to a radial direction the anilox roller 2 inclined mounting surfaces 13, 14.
  • the working doctor blade 4 or the closing doctor blade 6 are clamped between these fastening surfaces 13, 14 and fastening strips 16, 17, for example by means of screws.
  • the base body 3 can, as in the example shown, in one piece or else in several parts, for. B. divided in two in the axial direction.
  • the side jaws 7, 8 are arranged on axially delimiting end faces 18, 19 of the base body 3, each of which has a curvature of the anilox roller 2 on its sealing surface 21 facing the anilox roller 2.
  • the side jaws 7, 8, working, closing doctor blade 4, 6 and the depression 9 of the base body 3 thus delimit an ink chamber 22 of the chamber doctor blade 1.
  • an inner end face 23, 24 of the respective side jaw 7, 8 is provided with an opening 26 pointing in the direction of the ink chamber 22, and the sealing surface 21 of the side jaws 7, 8 has a recess 27 which acts as a lubrication and sealing pocket.
  • the opening 26 and the recess 27 are connected to one another.
  • an incision 28, 29 is provided through the sealing surface 21, which also serves as a depression 27 and opening 26. This incision 28, 29 is U-shaped, with a width b28, z.
  • the incision 28, 29 with the ink chamber 22 facing end face 23, 24 of the side jaws 7, 8 has a rotational angle alpha, z. B. 45 ° include.
  • the recess 27 is designed as a conical bore 31 which is centered with respect to the width of the sealing surface 21 and whose maximum diameter d31, z. B. is smaller than the width b7 of the side jaws 7, 8.
  • the opening 26 designed as a bore 32 opens in the region of the cone tip of the bore 31 and thus connects the bore 31 to the ink chamber 22.
  • z. B. cuboidal depressions or wedge-shaped tapered surfaces in the direction of rotation, which may be limited to the inner and outer end faces 23, 24, 33, 34 of the side jaws 7, 8 or open.
  • several of these depressions 27 and openings 26 can also be provided along the sealing surface 21.
  • the side jaws 7, 8 are on their outer, end surfaces 33, 34 facing away from the ink chamber 22 Wipers 36, 37 provided over the outer End face 33, 34 of the side jaws 7, 8 in a wedge shape
  • Direction of rotation of the anilox roller 2 also act. in the This example runs at the incoming end of the respective side jaws 7, 8 an incision 38 of the Depth t38 and width b38 below and approximately parallel to the sealing surface 21.
  • the scraper 36, 37 by bending a part the side jaws 7, 8 to the outside, d. H.
  • the operation of the chamber doctor blade 1 is as follows: The chamber doctor blade 1 is pressed against the anilox roller 2 by a holding device, not shown, so that the sealing surfaces 21 of the side jaws 7, 8 and prestressed working or closing doctor blade 4, 6 abut against a lateral surface 42 of the anilox roller 2 .
  • the ink chamber 22 thus formed is supplied or discharged with paint via openings (not shown).
  • the ink in the ink chamber 22 flows through the opening 26 of the end face 23, 24 of the side jaws 7, 8 into the recess 27 of the sealing surface 21.
  • the rotation of the anilox roller 2 causes the ink outside the recess 27 to form in a gap between the sealing surface 21 and anilox roller 2 transported.
  • the recess 27 thus forms a lubrication pocket of a hydrodynamic, or if the ink chamber 22 is operated with excess pressure, a hydrostatic plain bearing, the ink serving as a lubricant. If paint outside the outer end face 33, 34 of the side jaws 7, 8 emerges from the gap between the anilox roller 2 and the sealing surface 21, it collects as a bead on the anilox roller 2 and becomes the inner end faces 23, 24 of the stripper 37, 37 Side jaws 7, 8 transported. This leaked paint is conveyed along these end faces 23, 24 to a paint funnel or return tank, not shown.

Landscapes

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

Abstract

The cavity which contains the coloured printing ink is closed at the sides by walls (7) which engage with the surface of the printing roller. The sidewalls have grooves (26) which connect with the inside of the cavity. The grooves are in the form of slits which pass through the sealing surfaces between side walls and roller. The slits run at a sharp angle to the inner faces and point inward taken in the direction of rotation of the roller (2). The front ends (36) of the side walls are bent outward to provide scrapers for the printing inks.

Description

Die Erfindung betrifft eine Kammerrakel eines mit einer Rasterwalze versehenen Farbwerkes einer Rotationsdruckmaschine gemäß dem Oberbegriff des Anspruches 1.The invention relates to a doctor blade with one Anilox roller provided inking unit Rotary printing machine according to the preamble of Claim 1.

Aus der EP 04 38 731 A2 ist eine Kammerrakel bekannt. Eine Farbkammer der Kammerrakel wird stirnseitig mittels Seitenbacken abgedichtet. Diese Seitenbacken sind jeweils mit einem an eine Rasterwalze anstellbaren Dichtungsmittel versehen, das einer Krümmung einer Mantelfläche der Rasterwalze angepaßt ist. Diese Dichtungsmittel sind aus elastischem Material und an ihrer Berührfläche zur Mantelfläche der Rasterwalze mit einem reibungsarmen Werkstoff beschichtet.A chambered doctor blade is known from EP 04 38 731 A2. A ink chamber of the chamber doctor blade is made on the front by Sealed side jaws. These side jaws are each with one that can be adjusted to an anilox roller Sealant provided that a curvature Shell surface of the anilox roller is adapted. This Sealants are made of elastic material and their contact surface to the outer surface of the anilox roller coated with a low-friction material.

Nachteilig ist hierbei, daß Beschichtungsmaßnahmen notwendig sind, um eine reibungsarme Kontaktfläche der Dichtungsmittel zur Rasterwalze zu erhalten.The disadvantage here is that coating measures are necessary to create a low-friction contact surface Obtain sealant for anilox roller.

Die US 51 50 651 A zeigt eine gattungsgemäße Kammerrakel, deren Farbkammer mittels Seitenbacken abgedichtet wird. Diese Seitenbacken sind mit als Schmiertaschen wirkenden Vertiefungen versehen.The US 51 50 651 A shows a generic Chamber doctor blade, whose ink chamber by means of side jaws is sealed. These side jaws are with as Provide lubrication pocket-like depressions.

Die DE 43 02 671 A1 beschreibt eine Kammerrakel, in deren Seitenbacken Schmiertaschen angeordnet sind.DE 43 02 671 A1 describes a chambered doctor blade, in the side jaws of which are arranged lubrication pockets.

Der Erfindung liegt die Aufgabe zugrunde, eine Kammerrakel eines mit einer Rasterwalze versehenen Farbwerkes einer Rotationsdruckmaschine zu schaffen. The invention has for its object a Chamber doctor blade one with an anilox roller To create inking unit of a rotary printing press.

Diese Aufgabe wird erfindungsgemäß durch eine Kammerrakel mit den Merkmalen des kennzeichnenden Teiles des Anspruches 1 gelöst.This object is achieved by a Chamber doctor blade with the characteristics of the characteristic part of claim 1 solved.

In vorteilhafter Weise wird durch die erfindungsgemäße Kammerrakel Reibung minimiert, wodurch nur noch geringe Wärmeentwicklung entsteht. Hiermit wird ein Verschleiß von Seitenbacken als auch einer Mantelfläche einer Rasterwalze minimiert, wodurch eine höhere Standzeit erfolgt und Maschinenstillstandszelten vermieden werden.
In besonders vorteilhafter Weise wird durch die geringe Wärmeentwicklung eine Gasblasenbildung im Bereich der Seitenbacken verhindert, was zu einer verbesserten Farbführung der Rasterwalze führt und somit die Druckqualität steigert.
Im Vergleich zum Stand der Technik sind keine aufwendigen Gleitbeläge notwendig.
Durch den selbsttätig entstehenden minimalen Spalt tritt nur eine minimale Farbmenge aus der Kammerrakel aus, wodurch Wulstbildung und somit Spritzen der Rasterwalze weitgehend vermieden wird.Friction is advantageously minimized by the chambered doctor blade according to the invention, as a result of which only little heat is generated. This minimizes wear on side jaws as well as on the outer surface of an anilox roller, which results in a longer service life and machine downtime tents are avoided.
In a particularly advantageous manner, the low heat development prevents gas bubbles from forming in the area of the side jaws, which leads to improved ink guidance of the anilox roller and thus increases the print quality.
Compared to the prior art, no elaborate sliding linings are necessary.
Due to the automatically generated minimal gap, only a minimal amount of ink emerges from the chamber doctor blade, which largely prevents the formation of beads and thus splashing of the anilox roller.

Die erfindungsgemäße Kammerrakel ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. The chambered doctor blade according to the invention is in the drawing shown and is described in more detail below.

Es zeigen

Fig. 1
einen schematischen Schnitt durch eine erfindungsgemäße Kammerrakel in einem ersten Ausführungsbeispiel;
Fig. 2
eine schematische Draufsicht auf eine erfindungsgemäße Kammerrakel entsprechend Fig. 1;
Fig. 3
einen schematischen Schnitt durch eine erfindungsgemäße Kammerrakel in einem zweiten Ausführungsbeisplel;
Fig. 4
eine schematische Draufsicht entsprechend Fig. 3.
Show it
Fig. 1
a schematic section through a chambered doctor blade according to the invention in a first embodiment;
Fig. 2
a schematic plan view of a chamber doctor blade according to the invention corresponding to FIG. 1;
Fig. 3
a schematic section through a chambered doctor blade according to the invention in a second exemplary embodiment;
Fig. 4
3 shows a schematic top view corresponding to FIG. 3.

Eine Kammerrakel 1 wirkt mit einer Rasterwalze 2 eines Kurzfarbwerkes zusammen. Die Kammerrakel 1 erstreckt sich axial parallel zur Rasterwalze 2. Über einer Länge der Rasterwalze 2 können mehrere, nebeneinander angeordnete Kammerrakel 1, beispielsweise zwei sich jeweils über halbe Rasterwalzenlänge erstreckende Kammerrakel 1 vorgesehen sein. Es können aber auch beispielsweise druckplattenbreite Kammerrakel 1 vorgesehen sein, um auf der Rasterwalze 2 mehrere Farben zu verwenden oder die Farbzufuhr zonenweise abzustellen. Die Kammerrakel 1 besteht im wesentlichen aus einem Grundkörper 3, einem Arbeitsrakelblatt 4, einem Schließrakelblatt 6 und einem rechten bzw. linken Seitenbacken 7, 8. Der Grundkörper 3 ist mit einer Vertiefung 11 versehen und dessen walzennahe Enden 11, 12 weisen bezüglich einer radialen Richtung der Rasterwalze 2 geneigte Befestigungsflächen 13, 14 auf. Zwischen diesen Befestigungsflächen 13, 14 und Befestigungsleisten 16, 17 werden das Arbeitsrakelblatt 4 bzw. das Schließrakelblatt 6 beispielsweise mittels Schrauben eingespannt. Der Grundkörper 3 kann wie im dargestellten Beispiel einstückig oder aber auch mehrteilig, z. B. in axialer Richtung zweigeteilt, ausgebildet sein. An axial begrenzenden Stirnflächen 18, 19 des Grundkörpers 3 sind die Seitenbacken 7, 8 angeordnet, wobei diese jeweils an ihrer der Rasterwalze 2 zugewandten Dichtfläche 21 eine Krümmung der Rasterwalze 2 aufweisen.
Die Seitenbacken 7, 8, Arbeits-, Schließrakelblatt 4, 6 und die Vertiefung 9 des Grundkörpers 3 begrenzen somit eine Farbkammer 22 des Kammerrakels 1.
Im Bereich dieser Farbkammer 22 ist eine innere Stirnfläche 23, 24 des jeweiligen Seitenbackens 7, 8 mit einer in Richtung Farbkammer 22 weisenden Öffnung 26 versehen, und die Dichtflache 21 der Seitenbacken 7, 8 weist eine als Schmier- und Dichttasche wirkende Vertiefung 27 auf. Die Öffnung 26 und die Vertiefung 27 sind miteinander verbunden.
In einem ersten Ausführungsbeispiel (Fig. 1 und Fig. 2) ist ein Einschnitt 28, 29 durch die Dichtfläche 21 vorgesehen, der gleichzeitig als Vertiefung 27 und Öffnung 26 dient. Dieser Einschnitt 28, 29 ist U-förmig ausgebildet, mit einer Breite b28, z. B. 0,25 mm, und einer Tiefe t28, z. B. 14 mm, und erstreckt sich über die gesamte Breite b7 der Seitenbacken 7, 8. Zudem kann der Einschnitt 28, 29 mit der der Farbkammer 22 zugewandten Stirnfläche 23, 24 des Seitenbackens 7, 8 einen in Drehrichtung weisenden Öffnungswinkel Alpha, z. B. 45°, einschließen.A chambered doctor blade 1 interacts with an anilox roller 2 of a short inking unit. The chambered doctor blade 1 extends axially parallel to the anilox roller 2. A plurality of chambered doctor blades 1, for example two chambered doctor blades 1 each extending over half the length of the anilox roller length, can be provided over a length of the anilox roller 2. However, it can also be provided, for example, printing plate-wide chamber doctor blade 1 in order to use a plurality of colors on the anilox roller 2 or to switch off the ink supply zone by zone. The chambered doctor blade 1 consists essentially of a base body 3, a working doctor blade 4, a closing doctor blade 6 and a right or left side jaw 7, 8. The base body 3 is provided with a depression 11 and its ends 11, 12 near the rollers point with respect to a radial direction the anilox roller 2 inclined mounting surfaces 13, 14. The working doctor blade 4 or the closing doctor blade 6 are clamped between these fastening surfaces 13, 14 and fastening strips 16, 17, for example by means of screws. The base body 3 can, as in the example shown, in one piece or else in several parts, for. B. divided in two in the axial direction. The side jaws 7, 8 are arranged on axially delimiting end faces 18, 19 of the base body 3, each of which has a curvature of the anilox roller 2 on its sealing surface 21 facing the anilox roller 2.
The side jaws 7, 8, working, closing doctor blade 4, 6 and the depression 9 of the base body 3 thus delimit an ink chamber 22 of the chamber doctor blade 1.
In the area of this ink chamber 22, an inner end face 23, 24 of the respective side jaw 7, 8 is provided with an opening 26 pointing in the direction of the ink chamber 22, and the sealing surface 21 of the side jaws 7, 8 has a recess 27 which acts as a lubrication and sealing pocket. The opening 26 and the recess 27 are connected to one another.
In a first exemplary embodiment (FIGS. 1 and 2), an incision 28, 29 is provided through the sealing surface 21, which also serves as a depression 27 and opening 26. This incision 28, 29 is U-shaped, with a width b28, z. 0.25 mm, and a depth t28, e.g. B. 14 mm, and extends over the entire width b7 of the side jaws 7, 8. In addition, the incision 28, 29 with the ink chamber 22 facing end face 23, 24 of the side jaws 7, 8 has a rotational angle alpha, z. B. 45 ° include.

Bei einem zweiten Ausführungsbeispiel (Fig. 3 und Fig. 4) ist die Vertiefung 27 als kegelförmige Bohrung 31 ausgebildet, die zentrisch bezüglich der Breite der Dichtfläche 21 liegt und deren maximaler Durchmesser d31, z. B. kleiner als die Breite b7 der Seitenbacken 7, 8 ist. Die als Bohrung 32 ausgebildete Öffnung 26 mündet im Bereich der Kegelspitze der Bohrung 31 und verbindet somit die Bohrung 31 mit der Farbkammer 22.
Als Vertiefung 27 eignen sich natürlich auch andere Formen, z. B. quaderförmige Vertiefungen oder in Drehrichtung keilförmige zulaufende Flächen, die sowohl zu den inneren und äußeren Stirnflächen 23, 24, 33, 34 der Seitenbacken 7, 8 begrenzt oder offen ausgebildet sein können. Zudem können entlang der Dichtfläche 21 auch mehrere dieser Vertiefungen 27 und Öffnungen 26 angebracht sein.In a second embodiment (Fig. 3 and Fig. 4), the recess 27 is designed as a conical bore 31 which is centered with respect to the width of the sealing surface 21 and whose maximum diameter d31, z. B. is smaller than the width b7 of the side jaws 7, 8. The opening 26 designed as a bore 32 opens in the region of the cone tip of the bore 31 and thus connects the bore 31 to the ink chamber 22.
As a recess 27 are of course other shapes, z. B. cuboidal depressions or wedge-shaped tapered surfaces in the direction of rotation, which may be limited to the inner and outer end faces 23, 24, 33, 34 of the side jaws 7, 8 or open. In addition, several of these depressions 27 and openings 26 can also be provided along the sealing surface 21.

Weiterhin sind die Seitenbacken 7, 8 an ihren äußeren, der Farbkammer 22 abgewandten Stirnflächen 33, 34 mit Abstreifern 36, 37 versehen, die über die äußere Stirnfläche 33, 34 der Seitenbacken 7, 8 keilförmig in Drehrichtung der Rasterwalze 2 hinaus wirken. Im vorliegenden Beispiel verläuft am einlaufenden Ende des jeweiligen Seitenbackens 7, 8 ein Einschnitt 38 der Tiefe t38 und Breite b38 unterhalb und annähernd parallel zur Dichtfläche 21. Entlang dieses Einschnittes 38 wird der Abstreifer 36, 37 durch Abbiegen eines Teils der Seitenbacken 7, 8 nach außen, d. h. der Farbkammer 22 abgewandten Richtung derart abgebogen, daß eine Innenfläche 39, 41 des Abstreifers 36, 37 über die äußere Stirnfläche 34, 36 der Seitenbacken 7, 8 in einem Überstand ü, z. B. 3 mm, hinausragt. Somit bildet der Abstreifer 36, 37 bezüglich der Inneren Stirnfläche 23, 24 der Seitenbacken 7, 8 eine keilförmige Verjüngung.Furthermore, the side jaws 7, 8 are on their outer, end surfaces 33, 34 facing away from the ink chamber 22 Wipers 36, 37 provided over the outer End face 33, 34 of the side jaws 7, 8 in a wedge shape Direction of rotation of the anilox roller 2 also act. in the This example runs at the incoming end of the respective side jaws 7, 8 an incision 38 of the Depth t38 and width b38 below and approximately parallel to the sealing surface 21. Along this incision 38 the scraper 36, 37 by bending a part the side jaws 7, 8 to the outside, d. H. the color chamber 22 turned away in such a way that a Inner surface 39, 41 of the scraper 36, 37 on the outer end face 34, 36 of the side jaws 7, 8 in one Supernatant ü, z. B. 3 mm, protrudes. Thus the Wipers 36, 37 with respect to the inner end face 23, 24 of the side jaws 7, 8 a wedge-shaped taper.

Die Funktionsweise der Kammerrakel 1 ist folgendermaßen: Durch nicht dargestellte Haltevorrichtung wird das Kammerrakel 1 an die Rasterwalze 2 angedrückt, so daß die Dichtflächen 21 der Seitenbacken 7, 8 und vorgespanntes Arbeits- bzw. Schließrakelblatt 4, 6 an einer Mantelfläche 42 der Rasterwalze 2 anliegt. Der so gebildeten Farbkammer 22 wird über nicht dargestellte Öffnungen Farbe zu- bzw. abgeführt. Die in der Farbkammer 22 befindliche Farbe strömt durch die Öffnung 26 der Stirnfläche 23, 24 der Seitenbacken 7, 8 in die Vertiefung 27 der Dichtfläche 21. Durch die Drehung der Rasterwalze 2 wird die Farbe außerhalb der Vertiefung 27 in einen sich bildenden Spalt zwischen Dichtfläche 21 und Rasterwalze 2 transportiert. Die Vertiefung 27 bildet somit eine Schmiertasche eines hydrodynamischen, bzw. wenn die Farbkammer 22 mit überdruck betrieben wird, eines hydrostatischen Gleitlagers, wobei die Farbe als Schmiermittel dient.
Tritt Farbe außerhalb der äußeren Stirnfläche 33, 34 der Seitenbacken 7, 8 aus dem Spalt zwischen Rasterwalze 2 und Dichtfläche 21 aus, sammelt sich diese als Wulst auf der Rasterwalze 2 und wird mittels des Abstreifers 37, 37 zu den inneren Stirnflächen 23, 24 der Seitenbacken 7, 8 transportiert. Entlang dieser Stirnflächen 23, 24 wird diese ausgetretene Farbe zu einem nicht dargestellten Farbtrichter bzw. Rücklaufbehälter gefördert. The operation of the chamber doctor blade 1 is as follows: The chamber doctor blade 1 is pressed against the anilox roller 2 by a holding device, not shown, so that the sealing surfaces 21 of the side jaws 7, 8 and prestressed working or closing doctor blade 4, 6 abut against a lateral surface 42 of the anilox roller 2 . The ink chamber 22 thus formed is supplied or discharged with paint via openings (not shown). The ink in the ink chamber 22 flows through the opening 26 of the end face 23, 24 of the side jaws 7, 8 into the recess 27 of the sealing surface 21. The rotation of the anilox roller 2 causes the ink outside the recess 27 to form in a gap between the sealing surface 21 and anilox roller 2 transported. The recess 27 thus forms a lubrication pocket of a hydrodynamic, or if the ink chamber 22 is operated with excess pressure, a hydrostatic plain bearing, the ink serving as a lubricant.
If paint outside the outer end face 33, 34 of the side jaws 7, 8 emerges from the gap between the anilox roller 2 and the sealing surface 21, it collects as a bead on the anilox roller 2 and becomes the inner end faces 23, 24 of the stripper 37, 37 Side jaws 7, 8 transported. This leaked paint is conveyed along these end faces 23, 24 to a paint funnel or return tank, not shown.

TeilelisteParts list

11
KammerrakelChamber squeegee
22nd
RasterwalzeAnilox roller
33rd
GrundkörperBasic body
44th
ArbeitsrakelblattWorking doctor blade
55
--
66
SchließrakelblattClosing doctor blade
77
Seitenbacken, rechterSide jaws, right
88th
Seitenbacken, linkerSide jaws, left
99
Vertiefung (3)Deepening (3)
1010th
--
1111
Ende (3)The End (3)
1212th
Ende (3)End (3)
1313
BefestigungsflächeMounting surface
1414
BefestigungsflächeMounting surface
1515
--
1616
BefestigungsleisteMounting strip
1717th
BefestigungsleisteMounting strip
1818th
Stirnfläche (3)End face (3)
1919th
Stirnfläche (3)End face (3)
2020th
--
2121
DichtflächeSealing surface
2222
FarbkammerInk chamber
2323
Stirnfläche, innere (7)End face, inner (7)
2424th
Stirnfläche, innere (8)End face, inner (8)
2525th
--
2626
Öffnungopening
2727
Vertiefung deepening
2828
Einschnittincision
2929
Einschnittincision
3030th
--
3131
Bohrungdrilling
3232
Bohrungdrilling
3333
Stirnfläche, äußere (7)End face, outer (7)
3434
Stirnfläche, äußere (8)End face, outer (8)
3535
--
3636
Abstreifer (7)Wipers (7)
3737
Abstreifer (8)Wipers (8)
3838
Einschnittincision
3939
Innenfläche (37)Inner surface (37)
4040
--
4141
Innenfläche (38)Inner surface (38)
4242
Mantelfläche (2)Lateral surface (2)
b7b7
Breitewidth
b28b28
Breitewidth
b38b38
Breitewidth
d31d31
Durchmesserdiameter
t28t28
Tiefedepth
t38t38
Tiefedepth
üü
ÜberstandGot over
Alphaalpha
ÖffnungswinkelOpening angle

Claims (2)

Kammerrakel (1) an einer Rasterwalze einer Rotationsdruckmaschine mit eine Farbkammer seitlich schließenden Seitenbacken, die gegenüber der Rasterwalze dichten, wobei Leitelemente für den Farbablauf an seitlichen Rand der Kammerrakel vorgesehen sind, dadurch gekennzeichnet, daß die Seitenbacken (7; 8) mit auf der Mantelfläche (42) der Rasterwalze (2) anliegenden Abstreifern (36; 37) versehen sind, deren Innenfläche (39; 41) über eine äußere Stirnfläche (33; 34) der Seitenbacken (7; 8) um einen Überstand (ü) hinausragt und in Drehrichtung der Rasterwalze (2) nach innen weisend angeordnet ist.Chamber doctor (1) on an anilox roller Rotary printing machine with an ink chamber on the side closing side jaws opposite the anilox roller seal, with guide elements for the color sequence lateral edge of the doctor blade are provided, thereby characterized in that the side jaws (7; 8) with on the Shell surface (42) of the anilox roller (2) Wipers (36; 37) are provided, the inner surface (39; 41) via an outer end face (33; 34) of the Side jaws (7; 8) protrudes by a protrusion (ü) and in the direction of rotation of the anilox roller (2) inwards is arranged pointing. Kammerrakel (1) nach Anspruch 3, dadurch gekennzeichnet, daß der Abstreifer (36; 37) als Abbiegung des Seitenbackens (7; 8) ausgebildet ist.Chamber doctor blade (1) according to claim 3, characterized characterized in that the scraper (36; 37) as Bending of the side jaw (7; 8) is formed.
EP98107632A 1994-12-29 1995-12-20 Ink rail device Withdrawn EP0865917A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4447123 1994-12-29
DE4447123A DE4447123C1 (en) 1994-12-29 1994-12-29 Scraper for printing ink cavity in rotary printing press
EP95120199A EP0722833B1 (en) 1994-12-29 1995-12-20 Inking rail device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP95120199A Division EP0722833B1 (en) 1994-12-29 1995-12-20 Inking rail device

Publications (2)

Publication Number Publication Date
EP0865917A2 true EP0865917A2 (en) 1998-09-23
EP0865917A3 EP0865917A3 (en) 1998-12-02

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP98107632A Withdrawn EP0865917A3 (en) 1994-12-29 1995-12-20 Ink rail device
EP95120199A Expired - Lifetime EP0722833B1 (en) 1994-12-29 1995-12-20 Inking rail device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP95120199A Expired - Lifetime EP0722833B1 (en) 1994-12-29 1995-12-20 Inking rail device

Country Status (4)

Country Link
US (1) US5628250A (en)
EP (2) EP0865917A3 (en)
JP (1) JP2886124B2 (en)
DE (2) DE4447123C1 (en)

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DE19957464A1 (en) * 1999-11-29 2001-05-31 Heidelberger Druckmasch Ag Ink supply sealing device for printer, side parts of which have spring lip-form sealing elements
US6598525B2 (en) 1999-11-29 2003-07-29 Heidelberger Druckmaschinen Ag Device for sealing off an ink supply on printing machines

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US5983797A (en) * 1997-11-17 1999-11-16 Howard W. DeMoore End seal engaging bearer of anilox roller assembly
GB2339722B (en) * 1998-07-17 2003-02-19 Armstrong World Ind Ltd Improvements in and relating to printing machines
US6433890B1 (en) 1998-09-24 2002-08-13 Mdc Max Daetwyler Ag System and method for improving printing of a leading edge of an image in a gravure printing process
DE10136028C5 (en) * 2001-07-25 2016-03-17 manroland sheetfed GmbH Method and device for dosing a liquid medium in a processing machine
FI20065573A0 (en) * 2006-09-20 2006-09-20 Ike Service Oy Blade and method of making the blade
CN102886978A (en) * 2012-09-18 2013-01-23 苏州市三峰印刷机械有限公司 Printing ink supply device for rotary press
BR112015022200A2 (en) 2013-03-13 2017-07-18 Probity Eng Llc ink source apparatus, flexo printing press system and method for adjusting printing characteristics in flexo printing
EP3193045B1 (en) * 2016-01-14 2019-03-20 Windmöller & Hölscher KG Sealing element for sealing of the end faces of a doctor blade chamber
CN105665221A (en) * 2016-04-15 2016-06-15 江苏坤泰机械有限公司 Reverse precise sizing device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19957464A1 (en) * 1999-11-29 2001-05-31 Heidelberger Druckmasch Ag Ink supply sealing device for printer, side parts of which have spring lip-form sealing elements
US6598525B2 (en) 1999-11-29 2003-07-29 Heidelberger Druckmaschinen Ag Device for sealing off an ink supply on printing machines

Also Published As

Publication number Publication date
DE59505972D1 (en) 1999-06-24
DE4447123C1 (en) 1996-04-11
JP2886124B2 (en) 1999-04-26
EP0722833B1 (en) 1999-05-19
EP0865917A3 (en) 1998-12-02
US5628250A (en) 1997-05-13
EP0722833A3 (en) 1996-07-31
JPH08230162A (en) 1996-09-10
EP0722833A2 (en) 1996-07-24

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