EP3653381A1 - Drain box for an ink rail device - Google Patents

Drain box for an ink rail device Download PDF

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Publication number
EP3653381A1
EP3653381A1 EP19210036.0A EP19210036A EP3653381A1 EP 3653381 A1 EP3653381 A1 EP 3653381A1 EP 19210036 A EP19210036 A EP 19210036A EP 3653381 A1 EP3653381 A1 EP 3653381A1
Authority
EP
European Patent Office
Prior art keywords
drain box
ink
drainbox
chamber
rotary printing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19210036.0A
Other languages
German (de)
French (fr)
Other versions
EP3653381B1 (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
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 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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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B41PINDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00Printing processes
    • B41P2200/10Relief printing
    • B41P2200/12Flexographic printing

Definitions

  • the invention relates to a drain box for a doctor blade chamber of a rotary printing press.
  • a color chamber according to the prior art is for example from the DE 197 34 910 A1 known in which the doctor blade chamber of a flexographic printing machine is described.
  • the printing ink is applied to the printing cylinder by means of an anilox roller, which in turn is inked 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 filled with printing ink.
  • the ink chamber is part of the doctor blade chamber and is delimited in the longitudinal direction by two doctor blades and on the end faces by two sealing elements.
  • the doctor blades and the sealing elements of the sealing bodies can be adjusted to the ink application roller, so that the ink sealing roller, the doctor blades, the doctor chamber body and the sealing bodies seal the channel-like recess to the outside, so that an interior is created which is closed.
  • the doctor blade chamber body is provided with an ink supply which is often arranged in the center.
  • color sequences are generally also provided in order to maintain a color cycle can. These color sequences, via which the printing ink, which is inevitably enriched with air in the printing operation, can be removed, are arranged in the end regions of the interior or the channel-like recess.
  • 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 the invention.
  • the doctor blade chamber 101 has two doctor blades 103 and 104 in a known manner adjacent first partition (covered by the sealing element 106) and a second partition 108 is delimited.
  • the sealing element 106 is in turn held on the outside by a pivotable fixing plate 107.
  • Fig. 2 shows the process of inserting the drainbox cartridge according to the invention into the front of the doctor chamber Fig. 1 .
  • the reference symbols not shown correspond to the reference symbols Fig. 1 , so that in relation to the above description according to Fig. 1 is referred.

Abstract

Die Erfindung betrifft eine Drainbox für eine Rakelkammer (101) einer Rotationsdruckmaschine. Um die Reinigungskosten einer Rakelkammer einer Rotationsdruckmaschine zu reduzieren, ist vorgesehen, dass die Drainbox eine herausnehmbare Kartusche (102) aufweist, in der überschüssige Farbe während des Betriebs der Rotationsdruckmaschine gesammelt wird.The invention relates to a drain box for a doctor blade chamber (101) of a rotary printing press. In order to reduce the cleaning costs of a doctor blade chamber of a rotary printing machine, it is provided that the drain box has a removable cartridge (102) in which excess ink is collected during operation of the rotary printing machine.

Description

Die Erfindung betrifft eine Drainbox für eine Rakelkammer einer Rotationsdruckmaschine.The invention relates to a drain box for a doctor blade chamber of a rotary printing press.

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 color chamber according to the prior art is for example from the DE 197 34 910 A1 known in which the doctor blade chamber of a flexographic printing machine is described.

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 inked 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 filled with printing ink. When rolling off the printing cylinder, the printing ink thus absorbed 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 der Dichtungskörper sind an die Farbauftragswalze anstellbar, sodass die Farbdichtungswalze, die Rakelmesser, der Rakelkammerkörper und die Dichtungskörper 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 the longitudinal direction by two doctor blades and on the end faces by two sealing elements. The doctor blades and the sealing elements of the sealing bodies can be adjusted to the ink application roller, so that the ink sealing roller, the doctor blades, the doctor chamber body and the sealing bodies seal the channel-like recess to the outside, so that an interior is created which 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, the doctor blade chamber body is provided with an ink supply which is often arranged in the center. Furthermore, color sequences are generally also provided in order to maintain a color cycle can. These color sequences, via which the printing ink, which is inevitably enriched with air in the printing operation, can be removed, are arranged in the end regions of the interior 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 their end areas, that is to say in the area of the color sequences, accumulate and stick to the printing ink. It is therefore often necessary to clean the end areas of the ink chamber. To do this, the ink chamber must usually be removed from the printing press. In order to continue operating the press during cleaning, additional ink chambers must be kept in stock. If the ink chamber can no longer be cleaned sufficiently, it must be replaced. Both maintaining and replacing the ink chambers leads to high cleaning or 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 with partitions relative to the sealing element on one side and the ink chamber on the other side. Excess paint and air can be extracted in this drainbox, 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 patent 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 further delay. This creates 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 chamber and the drain box.
  • Process reliability is increased.
  • The drainbox cartridge is quick and easy to remove (even when colored).
  • The operator of the printing press does not require extensive training to change the cartridge.
  • The time required for changing the drain box cartridge is significantly less than changing the entire drain box.
  • The cost of changing the drainbox cartridge is significantly lower than 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 erfindungsgemäßen Drainbox-Kartusche.
Fig. 2
zeigt den Vorgang des Einschiebens der erfindungsgemäßen Drainbox-Kartusche in die Stirnseite der Rakelkammer aus Fig. 1.
Further details and advantages of the invention will be described with reference to the accompanying drawings.
Fig. 1
shows a perspective view of an end face of a doctor blade chamber with the drainbox cartridge according to the invention.
Fig. 2
shows the process of inserting the drainbox cartridge according to the invention into the front of the doctor chamber Fig. 1 .

Fig. 1 zeigt eine perspektivische Ansicht einer Stirnseite von einer Rakelkammer 101 mit der erfindungsgemäßen Drainbox-Kartusche 102. 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 the invention. The doctor blade chamber 101 has two doctor blades 103 and 104 in a known manner adjacent first partition (covered by the sealing element 106) and a second partition 108 is delimited. The sealing element 106 is in turn held on the outside by a pivotable fixing plate 107.

Fig. 2 zeigt den Vorgang des Einschiebens der erfindungsgemäßen 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 inserting the drainbox cartridge according to the invention into the front of the doctor chamber Fig. 1 . The reference symbols not shown correspond to the reference symbols Fig. 1 , so that in relation to the above description according to Fig. 1 is referred.

Claims (1)

Drainbox für eine Farbkammer einer Rotationsdruckmaschine,
mit einer ersten Zwischenwand, die an ein Dichtungselement angrenzt, das im Betrieb der Rotationsdruckmaschine an einem Walzenkörper anliegt,
mit einer zweiten Zwischenwand, die an der Farbkammer angrenzt,
wobei die Drainbox eine herausnehmbare Drainbox-Kartusche aufweist, in der überschüssige Farbe während des Betriebs der Rotationsdruckmaschine gesammelt wird.
Drain box for an ink chamber of a rotary printing press,
with a first intermediate wall which adjoins a sealing element which bears against a roller body during operation of the rotary printing press,
with a second partition that is adjacent to the ink chamber,
the drain box having a removable drain box cartridge in which excess ink is collected during 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 true EP3653381A1 (en) 2020-05-20
EP3653381B1 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

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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734910A1 (en) 1997-08-12 1999-02-18 Windmoeller & Hoelscher Doctor device for a rinsing inking unit of a rotary printing machine
DE10150488A1 (en) * 2001-10-16 2003-04-24 Windmoeller & Hoelscher Frontal sealing of the doctor blade chamber
WO2008152049A1 (en) * 2007-06-11 2008-12-18 Windmöller & Hölscher Kg Ink chamber for an inking system of a rotary printing machine and method for the production of such an ink chamber

Family Cites Families (3)

* 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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734910A1 (en) 1997-08-12 1999-02-18 Windmoeller & Hoelscher Doctor device for a rinsing inking unit of a rotary printing machine
DE10150488A1 (en) * 2001-10-16 2003-04-24 Windmoeller & Hoelscher Frontal sealing of the doctor blade chamber
WO2008152049A1 (en) * 2007-06-11 2008-12-18 Windmöller & Hölscher Kg Ink chamber for an inking system of a rotary printing machine and method for the production of such an ink chamber

Also Published As

Publication number Publication date
ES2898605T3 (en) 2022-03-08
DE102018129093A1 (en) 2020-05-20
EP3653381B1 (en) 2021-11-10

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