EP3653381B1 - Drain box for an ink rail device - Google Patents

Drain box for an ink rail device Download PDF

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Publication number
EP3653381B1
EP3653381B1 EP19210036.0A EP19210036A EP3653381B1 EP 3653381 B1 EP3653381 B1 EP 3653381B1 EP 19210036 A EP19210036 A EP 19210036A EP 3653381 B1 EP3653381 B1 EP 3653381B1
Authority
EP
European Patent Office
Prior art keywords
doctor blade
drain box
ink
chamber
drainbox
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.)
Active
Application number
EP19210036.0A
Other languages
German (de)
French (fr)
Other versions
EP3653381A1 (en
Inventor
Alexander ELBERS-SCHRICHTEN
Thomas Benke
Wolfgang Sprehe
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP3653381A1 publication Critical patent/EP3653381A1/en
Application granted granted Critical
Publication of EP3653381B1 publication Critical patent/EP3653381B1/en
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing

Definitions

  • the invention relates to a doctor blade chamber of a rotary printing machine, the doctor blade chamber having an ink chamber and a drain box.
  • a paint chamber according to the prior art is, for example, from DE 197 34 910 A1 known, in which the doctor blade chamber of a flexographic printing machine is described.
  • the WO 2008/152049 A1 a doctor blade chamber of a rotary printing machine, the doctor blade chamber comprising an ink chamber and a drain box.
  • the printing ink is applied to the printing cylinder by means of an anilox roller, which in turn is colored with the aid of a doctor blade chamber.
  • the surface of the anilox roller has a regular grid of flat cells which are filled with printing ink when the relevant peripheral section of the anilox roller moves through the ink chamber of the doctor blade chamber, which is filled with printing ink. When it rolls off the printing cylinder, the printing ink picked up in this way is then released to the printing cylinder.
  • the ink chamber is part of the doctor blade chamber and is delimited in its longitudinal direction by two doctor blades and at their end faces by two sealing elements.
  • the doctor blade and the sealing elements can be adjusted to the inking roller, so that the inking roller, the doctor blade, the doctor blade chamber body and the sealing elements seal the groove-like recess to the outside, so that an interior is created that is closed.
  • the body of the doctor blade chamber is provided with an ink inlet, which is often arranged in the middle. Furthermore, in the Color sequences are usually also provided in order to maintain a color cycle can. These color sequences, via which the printing ink, which is inevitably enriched with air during printing, can be removed, are arranged in the end regions of the interior space or the channel-like recess.
  • ink chambers The problem with such ink chambers is often that printing ink accumulates and becomes stuck in their end areas, that is to say in the area of the ink sequences. It is therefore often necessary to clean the end areas of the ink chamber. To do this, the ink chamber usually has to be removed from the printing machine. In order to be able to continue operating the printing machine during cleaning, additional ink chambers must be kept available. If the ink chamber can no longer be cleaned sufficiently, it must be replaced. Both the provision and the replacement of the ink chambers lead to high cleaning and replacement part costs.
  • the object of the present invention is therefore to reduce the cleaning costs of a doctor blade chamber of a rotary printing press.
  • Fig. 1 shows a perspective view of an end face of a doctor blade chamber 101 with the drain box cartridge 102 according to an embodiment of the invention.
  • the doctor blade chamber 101 has two doctor blades 103 and 104 in a known manner.
  • the opening 105 of the drain box can be seen on the front side, which is delimited by a first partition adjoining the sealing element 106 (covered by the sealing element 106) and a second partition 108.
  • the sealing element 106 is in turn held on its outside by a pivotable fixing plate 107.
  • Fig. 2 shows the process of pushing the drainbox cartridge into the face of the doctor blade chamber Fig. 1 .
  • the reference numerals not shown correspond to the reference numerals from FIG Fig. 1 so that in this regard to the above description Fig. 1 is referred.

Landscapes

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

Description

Die Erfindung betrifft eine Rakelkammer einer Rotationsdruckmaschine, wobei die Rakelkammer eine Farbkammer und eine Drainbox aufweist.The invention relates to a doctor blade chamber of a rotary printing machine, the doctor blade chamber having an ink chamber and a drain box.

Eine Farbkammer nach dem Stand der Technik ist beispielsweise aus der DE 197 34 910 A1 bekannt, in der die Rakelkammer einer Flexodruckmaschine beschrieben ist.A paint chamber according to the prior art is, for example, from DE 197 34 910 A1 known, in which the doctor blade chamber of a flexographic printing machine is described.

Ferner zeigt die WO 2008/152049 A1 eine Rakelkammer einer Rotationsdruckmaschine, wobei die Rakelkammer eine Farbkammer und eine Drainbox umfasst.Furthermore, the WO 2008/152049 A1 a doctor blade chamber of a rotary printing machine, the doctor blade chamber comprising an ink chamber and a drain box.

Bei Flexodruckmaschinen wird die Druckfarbe auf den Druckzylinder mittels einer Rasterwalze aufgetragen, die ihrerseits mit Hilfe einer Rakelkammer eingefärbt wird. Die Rasterwalze weist an ihrer Oberfläche ein regelmäßiges Raster aus flachen Näpfchen auf, die mit Druckfarbe gefüllt werden, wenn sich der betreffende Umfangsabschnitt der Rasterwalze durch die mit Druckfarbe gefüllte Farbkammer der Rakelkammer bewegt. Beim Abrollen an dem Druckzylinder wird dann die so aufgenommene Druckfarbe an den Druckzylinder abgeben.In flexographic printing machines, the printing ink is applied to the printing cylinder by means of an anilox roller, which in turn is colored with the aid of a doctor blade chamber. The surface of the anilox roller has a regular grid of flat cells which are filled with printing ink when the relevant peripheral section of the anilox roller moves through the ink chamber of the doctor blade chamber, which is filled with printing ink. When it rolls off the printing cylinder, the printing ink picked up in this way is then released to the printing cylinder.

Die Farbkammer ist Teil der Rakelkammer und wird in deren Längsrichtung durch zwei Rakelmesser und an deren Stirnseiten durch zwei Dichtungselemente begrenzt. Die Rakelmesser und die Dichtungselemente sind an die Farbauftragswalze anstellbar, sodass die Farbauftragswalze, die Rakelmesser, der Rakelkammerkörper und die Dichtungselemente die rinnenartige Ausnehmung nach außen hin abdichten, sodass ein Innenraum entsteht, der abgeschlossen ist.The ink chamber is part of the doctor blade chamber and is delimited in its longitudinal direction by two doctor blades and at their end faces by two sealing elements. The doctor blade and the sealing elements can be adjusted to the inking roller, so that the inking roller, the doctor blade, the doctor blade chamber body and the sealing elements seal the groove-like recess to the outside, so that an interior is created that is closed.

Um diesem Innenraum Druckfarbe zuführen zu können, ist der Rakelkammerkörper mit einem Farbzulauf versehen, der oft mittig angeordnet ist. Weiterhin sind in der Regel auch Farbabläufe vorgesehen, um einen Farbkreislauf aufrecht halten zu können. Diese Farbabläufe, über die Druckfarbe, die im Druckbetrieb unvermeidlich mit Luft angereichert wird, abführbar ist, sind in den Endbereichen des Innenraums bzw. der rinnenartigen Ausnehmung angeordnet.In order to be able to supply printing ink to this interior space, the body of the doctor blade chamber is provided with an ink inlet, which is often arranged in the middle. Furthermore, in the Color sequences are usually also provided in order to maintain a color cycle can. These color sequences, via which the printing ink, which is inevitably enriched with air during printing, can be removed, are arranged in the end regions of the interior space or the channel-like recess.

Oft besteht bei solchen Farbkammern das Problem, dass sich ihren Endbereichen, also im Bereich der Farbabläufe, Druckfarbe anreichert und festsetzt. Daher ist es häufig erforderlich, die Endbereiche der Farbkammer zu reinigen. Hierzu ist gewöhnlich die Farbkammer aus der Druckmaschine zu entfernen. Um die Druckmaschine während der Reinigung weiter betreiben zu können, müssen weitere Farbkammern vorgehalten werden. Lässt sich die Farbkammer nicht mehr in ausreichendem Maße reinigen, ist sie zu ersetzen. Sowohl das Vorhalten als auch das Ersetzen der Farbkammern führt zu hohen Reinigungs- bzw. Ersatzteilkosten.The problem with such ink chambers is often that printing ink accumulates and becomes stuck in their end areas, that is to say in the area of the ink sequences. It is therefore often necessary to clean the end areas of the ink chamber. To do this, the ink chamber usually has to be removed from the printing machine. In order to be able to continue operating the printing machine during cleaning, additional ink chambers must be kept available. If the ink chamber can no longer be cleaned sufficiently, it must be replaced. Both the provision and the replacement of the ink chambers lead to high cleaning and replacement part costs.

Es ist außerdem bekannt, vor den Dichtungselementen eine sogenannte Drainbox vorzusehen, die mit Zwischenwänden gegenüber dem Dichtungselement auf der einen Seite und der Farbkammer auf der anderen Seite abgegrenzt ist. In dieser Drainbox kann überschüssige Farbe und Luft abgesaugt werden, was das Dichtverhalten der Dichtungselemente verbessert. Die Funktionsweise dieser Drainboxen ist in den eingangs erwähnten Patentschriften beschrieben.It is also known to provide a so-called drain box in front of the sealing elements, which is delimited by partition walls opposite the sealing element on the one hand and the paint chamber on the other. In this drain box, excess paint and air can be sucked off, which improves the sealing behavior of the sealing elements. The functioning of these drain boxes is described in the patents mentioned at the beginning.

Die Aufgabe der vorliegenden Erfindung ist es daher, die Reinigungskosten einer Rakelkammer einer Rotationsdruckmaschine zu reduzieren.The object of the present invention is therefore to reduce the cleaning costs of a doctor blade chamber of a rotary printing press.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Die Drainbox-Kartusche kann bei Verschmutzung schnell und einfach entnommen werden und durch eine neue und saubere Drainbox-Kartusche ersetzt werden. Die Drainbox ist damit ohne weitere Verzögerung sofort wieder funktionsbereit. Hierdurch entstehen eine Reihe von Vorteilen:

  • Das Reinigen der Dichtstelle zwischen Rakelkammer und Drainbox entfällt.
  • Es ist keine dauerhaft mechanisch beanspruchte Dichtung zwischen Rakelkammer und Drainbox notwendig.
  • Die Prozesssicherheit wird erhöht.
  • Die Drainbox-Kartusche ist schnell und einfach zu entfernen (selbst im eingefärbten Zustand).
  • Der Bediener der Druckmaschine benötigt keine aufwendige Schulung zum Wechsel der Kartusche.
  • Der zeitlicher Aufwand für den Wechsel der Drainbox-Kartusche ist bedeutend geringer gegenüber einem Wechsel der gesamten Drainbox.
  • Die Kosten für den Wechsel der Drainbox-Kartusche ist bedeutend geringer gegenüber einem Wechsel der gesamten Drainbox.
This object is achieved by the features of claim 1. The drainbox cartridge can be removed quickly and easily if it is dirty and replaced with a new and clean drainbox cartridge. The Drainbox is immediately ready for use again without any further delay. This has a number of advantages:
  • There is no need to clean the sealing point between the doctor blade chamber and the drain box.
  • There is no need for a permanently mechanically stressed seal between the doctor blade chamber and the drain box.
  • The process reliability is increased.
  • The drainbox cartridge can be removed quickly and easily (even when it is colored).
  • The operator of the printing machine does not need extensive training to change the cartridge.
  • The time required to change the drainbox cartridge is significantly lower compared to changing the entire drainbox.
  • The cost of changing the drainbox cartridge is significantly lower compared to changing the entire drainbox.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand der beigefügten Zeichnungen beschrieben.

Fig. 1
zeigt eine perspektivische Ansicht einer Stirnseite von einer Rakelkammer mit der Drainbox-Kartusche nach einem Ausführungsbeispiel der Erfindung.
Fig. 2
zeigt den Vorgang des Einschiebens der Drainbox-Kartusche in die Stirnseite der Rakelkammer aus Fig. 1.
Further details and advantages of the invention are described with reference to the accompanying drawings.
Fig. 1
shows a perspective view of an end face of a doctor blade chamber with the drain box cartridge according to an embodiment of the invention.
Fig. 2
shows the process of pushing the drainbox cartridge into the face of the doctor blade chamber Fig. 1 .

Fig. 1 zeigt eine perspektivische Ansicht einer Stirnseite von einer Rakelkammer 101 mit der Drainbox-Kartusche 102 nach einem Ausführungsbeispiel der Erfindung. Die Rakelkammer 101 weist in bekannter Weise zwei Rakelmesser 103 und 104. An der Stirnseite ist die Öffnung 105 der Drainbox zu erkennen, die durch eine an das Dichtungselement 106 angrenzende erste Zwischenwand (verdeckt durch das Dichtungselement 106) und eine zweite Zwischenwand 108 begrenzt wird. Das Dichtungselement 106 wird auf dessen Außenseite wiederum durch eine schwenkbare Fixierplatte 107 gehalten. Fig. 1 shows a perspective view of an end face of a doctor blade chamber 101 with the drain box cartridge 102 according to an embodiment of the invention. The doctor blade chamber 101 has two doctor blades 103 and 104 in a known manner. The opening 105 of the drain box can be seen on the front side, which is delimited by a first partition adjoining the sealing element 106 (covered by the sealing element 106) and a second partition 108. The sealing element 106 is in turn held on its outside by a pivotable fixing plate 107.

Fig. 2 zeigt den Vorgang des Einschiebens der Drainbox-Kartusche in die Stirnseite der Rakelkammer aus Fig. 1. Die nicht weiter gezeigten Bezugszeichen entsprechen den Bezugszeichen aus Fig. 1, sodass diesbezüglich auf die obige Beschreibung gemäß Fig. 1 verwiesen wird. Fig. 2 shows the process of pushing the drainbox cartridge into the face of the doctor blade chamber Fig. 1 . The reference numerals not shown correspond to the reference numerals from FIG Fig. 1 so that in this regard to the above description Fig. 1 is referred.

Claims (1)

  1. A doctor blade chamber of a rotary printing press, wherein the doctor blade chamber (101) has an ink chamber and a drain box, wherein the drain box has a first intermediate wall, which abuts against a sealing element (106) of the doctor blade chamber (101), which during operation of the rotary printing press rests against a roll body, and a second intermediate wall (108), which abuts against the ink chamber,
    characterized in that the drain box has a removable drain box cartridge (102), in which excess ink is collected during the operation of the rotary printing press.
EP19210036.0A 2018-11-19 2019-11-19 Drain box for an ink rail device Active EP3653381B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018129093.4A DE102018129093A1 (en) 2018-11-19 2018-11-19 Drain box for a doctor chamber

Publications (2)

Publication Number Publication Date
EP3653381A1 EP3653381A1 (en) 2020-05-20
EP3653381B1 true EP3653381B1 (en) 2021-11-10

Family

ID=68618038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19210036.0A Active EP3653381B1 (en) 2018-11-19 2019-11-19 Drain box for an ink rail device

Country Status (3)

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EP (1) EP3653381B1 (en)
DE (1) DE102018129093A1 (en)
ES (1) ES2898605T3 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539759C1 (en) * 1985-11-09 1987-04-02 Roland Man Druckmasch Color divider for a flexo inking unit
US4796528A (en) * 1987-05-29 1989-01-10 M.A.N. Roland Druckmaschinen Ag Separated ink fountain for a flexographic printing machine
DE19734910A1 (en) 1997-08-12 1999-02-18 Windmoeller & Hoelscher Doctor device for a rinsing inking unit of a rotary printing machine
DE10150488B4 (en) * 2001-10-16 2005-08-04 Windmöller & Hölscher Kg Front seal of the doctor chamber
DE102007027385B4 (en) * 2007-06-11 2011-06-16 Windmöller & Hölscher Kg Ink chamber for an inking unit of a rotary printing press and method for producing such a ink chamber
DE102008041909A1 (en) * 2008-09-09 2010-03-11 Manroland Ag Pressurized fluid applicator i.e. lacquer module, for use in sheet offset printing press, has dosing systems comprising applicator rollers that cooperate with each other for selectively supplying pressurized fluid to plate cylinder

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Publication number Publication date
EP3653381A1 (en) 2020-05-20
ES2898605T3 (en) 2022-03-08
DE102018129093A1 (en) 2020-05-20

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