EP3224051B1 - Doctor blade chamber support - Google Patents

Doctor blade chamber support Download PDF

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Publication number
EP3224051B1
EP3224051B1 EP15801175.9A EP15801175A EP3224051B1 EP 3224051 B1 EP3224051 B1 EP 3224051B1 EP 15801175 A EP15801175 A EP 15801175A EP 3224051 B1 EP3224051 B1 EP 3224051B1
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EP
European Patent Office
Prior art keywords
doctor blade
blade chamber
chamber
chamber support
magnetic force
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EP15801175.9A
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German (de)
French (fr)
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EP3224051A1 (en
Inventor
Alexander ELBERS-SCHRICHTEN
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Publication of EP3224051A1 publication Critical patent/EP3224051A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—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 doctoring chamber carrier of a printing machine for fastening a doctoring chamber, which cooperates in a printing operating position with a metering roller, and a corresponding method for attaching a doctoring chamber to a doctor chamber carrier.
  • the original system is the fountain roller inking unit (3-roller inking unit), for example, from the DE 29 42 521 C2 is known.
  • the ink is metered by squeezing off the excess ink in the nip between the fountain roller and the anilox roller.
  • a closed squeegee system according to the prior art is for example from the EP1 302 315 B1 known.
  • a remaining problem of such a squeegee system is the fact that to ensure the tightness of various measures must be taken, which entail a constant and not negligible maintenance.
  • front-side seals regularly replaced and renewed to ensure the tightness of the closed doctoring chamber system.
  • EP1 466 733 A2 a doctoring chamber carrier of a printing machine with all the features of the preamble of claim 1.
  • the object of the invention is therefore to reduce the maintenance of the known in particular from the flexographic printing inking.
  • the doctoring chamber carrier according to the invention is designed for fastening a doctoring chamber, which cooperates with a metering roller during the printing operation in a printing operating position, wherein fastening means are provided on the doctoring chamber carrier, which hold the doctoring chamber form fit to the doctoring chamber carrier with the exception of one degree of freedom, and wherein the one degree of freedom at least during the Mounting in the direction of Gravity vector is aligned and can be acted upon with a switchable and reversible magnetic force such that the magnetic force keeps the doctor chamber during assembly relative to the doctor chamber carrier at a distance and fixed during the printing operation on the doctor chamber carrier.
  • the method according to the invention is a method for fastening a doctor blade chamber to a doctor chamber carrier of a printing press, wherein the doctor chamber cooperates with a metering roller during the printing operation in a printing operating position and fastening means are provided on the doctor chamber carrier, which form-fittingly connects the doctor chamber to the doctor chamber carrier Degree of freedom, in which the one degree of freedom is aligned at least during assembly in the direction of the gravity vector and is acted upon with a switchable and reversible magnetic force such that the magnetic force keeps the doctor chamber during assembly relative to the doctor chamber carrier at a distance and during the printing operation on Doctor blade carrier fixed.
  • a significant advantage of the invention is that the assembly of a doctor chamber simplified and thus the maintenance can be reduced in particular on a flexographic printing machine.
  • This is achieved by the fact that the magnetic force is switchable.
  • the doctor chamber carrier is aligned during assembly in such a way that the doctor chamber is placed in the direction of the gravity vector on the doctor chamber carrier. It is therefore particularly advantageous if the magnetic force is initially switched opposite to the mounting direction. This causes namely, that the doctor chamber can be gently and without damage placed on the doctor chamber. If the magnetic force is designed large enough, then this causes the mounted doctor blade chamber on the doctor chamber carrier at a certain distance "floats" and is held only by corresponding guides in the plane perpendicular to the gravity vector. By said distance can also be prevented that the fitter sticks his fingers when placing the doctor chamber on the doctor chamber carrier.
  • the assembly is made safer by the magnetic force is reversed during assembly. This prevents that the fitter injured when placing the doctor chamber on the doctor chamber carrier or his fingers are jammed.
  • fastening means are provided on the doctoring chamber carrier which hold the doctoring chamber in a form-fitting manner on the doctoring chamber carrier with the exception of one degree of freedom.
  • the doctoring chamber is clamped in the printing operating position between the doctoring chamber carrier and the metering roller.
  • the doctor chamber carrier is pivoted after mounting the doctor chamber from a mounting position to the printing operating position.
  • the said one degree of freedom may now be expediently oriented in the direction of the metering roller, so that the magnetic holding force is assisted by the clamping force acting in the printing operating position between the metering roller and the metering chamber carrier.
  • nozzles are provided on the doctor chamber with which in the printing operating position a sealing connection to the machine-side ink circuit can be produced.
  • the aforementioned fastening means are formed by the nozzle.
  • the magnetic force is applied by permanent magnets.
  • the magnetic force is applied by electromagnets.
  • the special regulations regarding explosion protection must be observed.
  • Fig. 1 shows a schematic side view of a doctor blade chamber 101 in the printing operating position, which is employed on an anilox roller 102 of a flexographic printing press.
  • the anilox roller 102 rotates in the direction of arrow 103 during operation and picks up ink in the ink chamber 104.
  • the ink chamber 104 is in turn limited by the anilox roller 102, the closing blade 105, the work doctor blade 106 and the end face each by a seal 107.
  • the closing squeegee 105 and the work squeegee 106 are fixed on the squeegee chamber 101 by the support rails 108 and 109.
  • Fig. 2 shows a side view of a doctor blade chamber 201 in printing operating position with the associated doctor chamber 202.
  • the doctoring chamber 201 is fixed directly on the doctor chamber 202 - for reasons of illustration, however, both parts are unfolded towards the viewer, so that the fixation between the two parts can be seen.
  • the doctor chamber 202 is also shown as a simple cuboid. Without limiting the invention, it is known to those skilled in the art that the doctor chamber carrier 202 can take any other forms, depending on the particular design conditions of the press in question.
  • the doctor chamber 202 has four nozzles 203, 204, 205 and 206 and two permanent magnets 207 and 208 on.
  • the doctoring chamber 201 has four openings 209, 210, 211 and 212 and two surfaces 213 and 214 of magnetic material.
  • the four nozzles 203, 204, 205 and 206 are connected on the machine side to the ink circuit of the printing press, so that with the fixation between the doctoring chamber 201 and the doctor chamber 202 at the same time a sealing connection to the paint circuit has been made.
  • Fig. 3 shows a perspective side view of a doctor blade chamber 301 in the mounting position with the associated doctor chamber carrier 302.
  • the doctor chamber 301 is placed in the direction of the gravity vector 313 on the doctor chamber 302, so that the nozzle 303, 304, 305 and 306 analogous to the embodiment of FIG Fig. 2 engage in the not visible here openings of the doctor chamber 301.
  • the doctoring chamber carrier now has switchable electromagnets 307 and 308.
  • the doctor chamber 301 at the corresponding locations (again not visible here) on two permanent magnets.
  • the electromagnets 307 and 308 are initially switched to "repulsion", so that the mounted doctor blade chamber 301 floats at a certain distance above the doctor chamber carrier 302 as soon as the nozzles 303, 304, 305 and 306 have engaged in the corresponding openings.
  • the installer now switches the electromagnets 307 and 308 to "attraction", so that the doctor chamber 301 is securely fixed to the doctor chamber carrier 302 by the magnetic force.

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

Description

Die Erfindung betrifft einen Rakelkammerträger einer Druckmaschine zum Befestigen einer Rakelkammer, die in einer Druckbetriebsposition mit einer Dosierwalze zusammenwirkt, und ein entsprechendes Verfahren zum Befestigen einer Rakelkammer an einem Rakelkammerträger.The invention relates to a doctoring chamber carrier of a printing machine for fastening a doctoring chamber, which cooperates in a printing operating position with a metering roller, and a corresponding method for attaching a doctoring chamber to a doctor chamber carrier.

Im Bereich des Flexodrucks sind grundsätzlich verschiedene Dosierwerke bzw. Farbwerkstypen bekannt, von denen das Rakelkammersystem einen Farbwerkstyp darstellt.In the field of flexographic printing, basically different metering units or types of inking units are known, of which the doctoring chamber system represents a type of inking unit.

Das ursprüngliche System ist das Tauchwalzenfarbwerk (3-Walzen-Farbwerk), das beispielsweise aus der DE 29 42 521 C2 bekannt ist. Die Farbdosierung erfolgt über das Abquetschen der überflüssigen Farbe in dem Walzenspalt zwischen Tauchwalze und Rasterwalze.The original system is the fountain roller inking unit (3-roller inking unit), for example, from the DE 29 42 521 C2 is known. The ink is metered by squeezing off the excess ink in the nip between the fountain roller and the anilox roller.

Mit der zunehmenden Bedeutung des Rasterdrucks wurden allerdings immer höhere Anforderungen an die Druckqualität gestellt, die sich durch das vorgenannte Tauchwalzenfarbwerk nicht erfüllen lassen. Als weiterer Farbwerkstyp hat sich daher vor allem das Rakelkammersystem etabliert, das den Vorteil einer sehr gut dosierbaren Farbübertragung bei gleichzeitig beliebiger Wiederholbarkeit bietet. Beim Rakelkammersystem unterscheidet man wiederum zwischen dem offenen und dem geschlossenen System, wobei sich das geschlossene System inzwischen weitestgehend durchgesetzt hat, da hiermit auch eine automatische Reinigung der Rasterwalzen und aller farbführenden Teile und damit schnelle und automatisierbare Auftrags- und Farbwechsel möglich ist.With the increasing importance of halftone printing, however, ever higher demands were placed on the print quality, which can not be met by the aforementioned inking roller inking unit. As a further type of inking, therefore, especially the doctoring chamber system has been established, which offers the advantage of a very good metered color transmission while maintaining any repeatability. The squeegee system again differentiates between the open and the closed system, whereby the closed system has now prevailed as far as possible, as this also an automatic cleaning of the anilox rollers and all ink-carrying parts and thus fast and automatable job and color changes is possible.

Ein geschlossenes Rakelkammersystem nach dem Stand der Technik ist beispielsweise aus der EP1 302 315 B1 bekannt. Ein verbleibendes Problem eines derartigen Rakelkammersystems ist allerdings die Tatsache, dass zur Gewährleistung der Dichtigkeit verschiedene Maßnahmen ergriffen müssen, die einen ständigen und nicht zu vernachlässigen Wartungsaufwand nach sich ziehen. So müssen beispielsweise die in der EP1 302 315 B1 erwähnten stirnseitigen Dichtungen regelmäßig ausgetauscht und erneuert werden, um die Dichtigkeit des geschlossenen Rakelkammersystems sicherzustellen.A closed squeegee system according to the prior art is for example from the EP1 302 315 B1 known. A remaining problem of such a squeegee system, however, is the fact that to ensure the tightness of various measures must be taken, which entail a constant and not negligible maintenance. For example, in the EP1 302 315 B1 mentioned front-side seals regularly replaced and renewed to ensure the tightness of the closed doctoring chamber system.

Die Durchführung von Wartungsarbeiten an einem geschlossenen Rakelkammersystem wird wiederum dadurch beeinträchtigt, dass die Rakelkammer innerhalb der Druckmaschine nur schwer zugänglich ist. So kommt das geschlossene Rakelkammersystem gemäß der EP1 302 315 B1 in der Regel in einer Zentralzylinderdruckmaschine zum Einsatz, wie diese beispielsweise aus der WO 2009/144016 A1 bekannt ist. Dies bedeutet, dass typischerweise 8 geschlossene Rakelkammersysteme um den Zentralzylinder herum angeordnet sind. Da der Zentralzylinder ein empfindliches Herzstück in jeder Zentralzylinderdruckmaschine bildet, dürfen in dessen Nähe Wartungsarbeiten an den Rakelkammersystemen nur mit äußerster Vorsicht und nur von geschultem Fachpersonal durchgeführt werden. Auch dieser Aspekt erhöht die Kosten für jegliche Wartungsarbeiten an den RakelkammersystemenPerforming maintenance on a closed doctoring chamber system is again affected by the fact that the doctor chamber is difficult to access within the printing press. So comes the closed squeegee system according to the EP1 302 315 B1 usually in a central cylinder printing machine for use, as this example, from the WO 2009/144016 A1 is known. This means that typically 8 closed doctoring chamber systems are arranged around the central cylinder. Since the central cylinder forms a sensitive centerpiece in each central-cylinder printing press, maintenance work on the doctoring chamber systems in the vicinity of it may only be carried out with extreme caution and only by trained specialist personnel. Also, this aspect increases the cost of any maintenance on the doctoring chamber systems

Ferner offenbart die EP1 466 733 A2 einen Rakelkammerträger einer Druckmaschine mit sämtlichen Merkmalen des Oberbegriffs des Anspruchs 1.Further, the EP1 466 733 A2 a doctoring chamber carrier of a printing machine with all the features of the preamble of claim 1.

Aufgabe der Erfindung ist es daher, den Wartungsaufwand der insbesondere aus dem Flexodruckbereich bekannten Farbwerke zu reduzieren.The object of the invention is therefore to reduce the maintenance of the known in particular from the flexographic printing inking.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 und des Patentanspruchs 6 gelöst.This object is solved by the features of patent claim 1 and claim 6.

Vorteilhafte Weiterbildungen der vorliegenden Erfindung sind Gegenstand der abhängigen Patentansprüche.Advantageous developments of the present invention are the subject of the dependent claims.

Der erfindungsgemäße Rakelkammerträger ist zum zum Befestigen einer Rakelkammer ausgelegt, die während des Druckbetriebs in einer Druckbetriebsposition mit einer Dosierwalze zusammenwirkt, wobei am Rakelkammerträger Befestigungsmittel vorgesehen sind, die die Rakelkammer formschlüssig am Rakelkammerträger mit Ausnahme eines Freiheitsgrades halten, und wobei der eine Freiheitsgrad zumindest während der Montage in Richtung des Schwerkraftvektors ausgerichtet ist und mit einer schaltbaren und umkehrbaren magnetischen Kraft derart beaufschlagbar ist, dass die magnetische Kraft die Rakelkammer während der Montage gegenüber dem Rakelkammerträger auf Abstand hält und während des Druckbetriebs am Rakelkammerträger fixiert.The doctoring chamber carrier according to the invention is designed for fastening a doctoring chamber, which cooperates with a metering roller during the printing operation in a printing operating position, wherein fastening means are provided on the doctoring chamber carrier, which hold the doctoring chamber form fit to the doctoring chamber carrier with the exception of one degree of freedom, and wherein the one degree of freedom at least during the Mounting in the direction of Gravity vector is aligned and can be acted upon with a switchable and reversible magnetic force such that the magnetic force keeps the doctor chamber during assembly relative to the doctor chamber carrier at a distance and fixed during the printing operation on the doctor chamber carrier.

Bei dem erfindungsgemäßen Verfahren handelt es sich um ein Verfahren zum Befestigen einer Rakelkammer an einem Rakelkammerträger einer Druckmaschine, wobei die Rakelkammer während des Druckbetriebs in einer Druckbetriebsposition mit einer Dosierwalze zusammenwirkt und wobei am Rakelkammerträger Befestigungsmittel vorgesehen sind, die die Rakelkammer formschlüssig am Rakelkammerträger mit Ausnahme eines Freiheitsgrades halten, bei dem der eine Freiheitsgrad zumindest während der Montage in Richtung des Schwerkraftvektors ausgerichtet wird und mit einer schaltbaren und umkehrbaren magnetischen Kraft derart beaufschlagbar wird, dass die magnetische Kraft die Rakelkammer während der Montage gegenüber dem Rakelkammerträger auf Abstand hält und während des Druckbetriebs am Rakelkammerträger fixiert.The method according to the invention is a method for fastening a doctor blade chamber to a doctor chamber carrier of a printing press, wherein the doctor chamber cooperates with a metering roller during the printing operation in a printing operating position and fastening means are provided on the doctor chamber carrier, which form-fittingly connects the doctor chamber to the doctor chamber carrier Degree of freedom, in which the one degree of freedom is aligned at least during assembly in the direction of the gravity vector and is acted upon with a switchable and reversible magnetic force such that the magnetic force keeps the doctor chamber during assembly relative to the doctor chamber carrier at a distance and during the printing operation on Doctor blade carrier fixed.

Ein wesentlicher Vorteil der Erfindung besteht darin, dass sich die Montage einer Rakelkammer vereinfacht und somit der Wartungsaufwand insbesondere an einer Flexodruckmaschine reduziert werden kann. Dies wird dadurch erreicht, dass die magnetische Kraft schaltbar ist. In der Regel ist der Rakelkammerträger während der Montage derart ausgerichtet, dass die Rakelkammer in Richtung des Schwerkraftvektors auf den Rakelkammerträger aufgesetzt wird. Es ist daher besonders vorteilhaft, wenn die magnetische Kraft zunächst entgegengesetzt zur Montagerichtung geschaltet wird. Dies bewirkt nämlich, dass die Rakelkammer schonend und beschädigungsfrei auf den Rakelkammerträger aufgesetzt werden kann. Wenn die magnetische Kraft groß genug ausgelegt ist, dann bewirkt dies, dass die aufgesetzte Rakelkammer auf dem Rakelkammerträger in einem gewissen Abstand "schwebt" und nur durch entsprechende Führungen in der Ebene senkrecht zum Schwerkraftvektor gehalten wird. Durch den besagten Abstand kann außerdem verhindert werden, dass sich der Monteur beim Aufsetzen der Rakelkammer auf den Rakelkammerträger die Finger klemmt.A significant advantage of the invention is that the assembly of a doctor chamber simplified and thus the maintenance can be reduced in particular on a flexographic printing machine. This is achieved by the fact that the magnetic force is switchable. As a rule, the doctor chamber carrier is aligned during assembly in such a way that the doctor chamber is placed in the direction of the gravity vector on the doctor chamber carrier. It is therefore particularly advantageous if the magnetic force is initially switched opposite to the mounting direction. This causes namely, that the doctor chamber can be gently and without damage placed on the doctor chamber. If the magnetic force is designed large enough, then this causes the mounted doctor blade chamber on the doctor chamber carrier at a certain distance "floats" and is held only by corresponding guides in the plane perpendicular to the gravity vector. By said distance can also be prevented that the fitter sticks his fingers when placing the doctor chamber on the doctor chamber carrier.

Insbesondere wird also die Montage dadurch sicherer gestaltet, indem die magnetische Kraft während der Montage entgegengesetzt geschaltet wird. Hierdurch wird verhindert, dass sich der Monteur beim Aufsetzen der Rakelkammer auf den Rakelkammerträger verletzt oder seine Finger verklemmt werden.In particular, therefore, the assembly is made safer by the magnetic force is reversed during assembly. This prevents that the fitter injured when placing the doctor chamber on the doctor chamber carrier or his fingers are jammed.

Weiterhin sind erfindungsgemäß am Rakelkammerträger Befestigungsmittel vorgesehen sind, die die Rakelkammer formschlüssig am Rakelkammerträger mit Ausnahme eines Freiheitsgrades halten. In diesem Zusammenhang wird die Tatsache ausgenutzt, dass die Rakelkammer in der Druckbetriebsposition zwischen Rakelkammerträger und der Dosierwalze eingeklemmt ist. Hierzu wird der Rakelkammerträger nach der Montage der Rakelkammer von einer Montageposition in die Druckbetriebsposition verschwenkt. In der Druckbetriebsposition kann der besagte eine Freiheitsgrad nun zweckmäßigerweise in Richtung der Dosierwalze ausgerichtet sein, sodass die magnetische Haltekraft von der Klemmkraft unterstützt wird, die in der Druckbetriebsposition zwischen der Dosierwalze und dem Rakelkammerträger wirkt.Furthermore, according to the invention, fastening means are provided on the doctoring chamber carrier which hold the doctoring chamber in a form-fitting manner on the doctoring chamber carrier with the exception of one degree of freedom. In this connection, the fact is exploited that the doctoring chamber is clamped in the printing operating position between the doctoring chamber carrier and the metering roller. For this purpose, the doctor chamber carrier is pivoted after mounting the doctor chamber from a mounting position to the printing operating position. In the printing operating position, the said one degree of freedom may now be expediently oriented in the direction of the metering roller, so that the magnetic holding force is assisted by the clamping force acting in the printing operating position between the metering roller and the metering chamber carrier.

Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass an dem Rakelkammerträger Stutzen vorgesehen sind, mit denen in der Druckbetriebsposition ein dichtender Anschluss an den maschinenseitigen Farbkreislauf herstellbar ist. Besonders vorzugsweise werden die vorgenannten Befestigungsmittel durch die Stutzen gebildet. Hierdurch kann der Wartungsaufwand nochmals reduziert werden, da mit dem Fixieren der Rakelkammer am Rakelkammerträger gleichzeitig der Anschluss an den Farbkreislauf erfolgt.According to a further preferred embodiment it is provided that nozzles are provided on the doctor chamber with which in the printing operating position a sealing connection to the machine-side ink circuit can be produced. Particularly preferably, the aforementioned fastening means are formed by the nozzle. In this way, the maintenance effort can be further reduced, since with the fixing of the doctor blade chamber at the doctor chamber carrier at the same time the connection to the paint circuit.

Nach einer weiteren bevorzugten Ausführungsform wird die magnetische Kraft durch Permanentmagnete aufgebracht. Grundsätzlich ist es jedoch auch möglich, dass die magnetische Kraft durch Elektromagnete aufgebracht wird. Allerdings müssen in diesem Fall die besonderen Vorschriften hinsichtlich des Explosionsschutzes beachtet werden.According to another preferred embodiment, the magnetic force is applied by permanent magnets. In principle, however, it is also possible that the magnetic force is applied by electromagnets. However, in this case, the special regulations regarding explosion protection must be observed.

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

Fig. 1
zeigt eine schematische Seitenansicht einer Rakelkammer in Druckbetriebsposition, die an einer Rasterwalze einer Flexodruckmaschine angestellt ist.
Fig. 2
zeigt eine perspektivische Seitenansicht einer Rakelkammer in Druckbetriebsposition mit dem dazugehörigen Rakelkammerträger.
Fig. 3
zeigt eine perspektivische Seitenansicht einer Rakelkammer in Montageposition mit dem dazugehörigen Rakelkammerträger.
Further details and advantages of the invention will be described with reference to the accompanying drawings:
Fig. 1
shows a schematic side view of a doctoring chamber in printing operating position, which is employed on an anilox roller of a flexographic printing press.
Fig. 2
shows a perspective side view of a doctoring chamber in printing operating position with the associated doctor chamber carrier.
Fig. 3
shows a side perspective view of a doctoring chamber in mounting position with the associated doctor chamber carrier.

Fig. 1 zeigt eine schematische Seitenansicht einer Rakelkammer 101 in Druckbetriebsposition, die an einer Rasterwalze 102 einer Flexodruckmaschine angestellt ist. Die Rasterwalze 102 dreht sich im Betrieb in Richtung des Pfeils 103 und nimmt in der Farbkammer 104 Farbe auf. Die Farbkammer 104 wird wiederum durch die Rasterwalze 102, das Schließrakel 105, das Arbeitsrakel 106 sowie stirnseitig jeweils durch eine Dichtung 107 begrenzt. Das Schließrakel 105 und das Arbeitsrakel 106 sind durch die Halteschienen 108 und 109 auf der Rakelkammer 101 befestigt. Fig. 1 shows a schematic side view of a doctor blade chamber 101 in the printing operating position, which is employed on an anilox roller 102 of a flexographic printing press. The anilox roller 102 rotates in the direction of arrow 103 during operation and picks up ink in the ink chamber 104. The ink chamber 104 is in turn limited by the anilox roller 102, the closing blade 105, the work doctor blade 106 and the end face each by a seal 107. The closing squeegee 105 and the work squeegee 106 are fixed on the squeegee chamber 101 by the support rails 108 and 109.

Fig. 2 zeigt eine perspektivische Seitenansicht einer Rakelkammer 201 in Druckbetriebsposition mit dem dazugehörigen Rakelkammerträger 202. Im Betrieb ist die Rakelkammer 201 direkt auf dem Rakelkammerträger 202 fixiert - aus Darstellungsgründen sind allerdings beide Teile zum Betrachter hin aufgeklappt, damit die Fixierung zwischen beiden Teilen erkennbar ist. Aus Darstellungsgründen ist der Rakelkammerträger 202 außerdem als einfacher Quader dargestellt. Ohne Beschränkung der Erfindung ist es dem Fachmann hier bekannt, dass der Rakelkammerträger 202 beliebig andere Formen annehmen kann, die von den jeweiligen konstruktiven Gegebenheiten der betreffenden Druckmaschine abhängen. Fig. 2 shows a side view of a doctor blade chamber 201 in printing operating position with the associated doctor chamber 202. In operation, the doctoring chamber 201 is fixed directly on the doctor chamber 202 - for reasons of illustration, however, both parts are unfolded towards the viewer, so that the fixation between the two parts can be seen. For illustrative purposes, the doctor chamber 202 is also shown as a simple cuboid. Without limiting the invention, it is known to those skilled in the art that the doctor chamber carrier 202 can take any other forms, depending on the particular design conditions of the press in question.

Der Rakelkammerträger 202 weist vier Stutzen 203, 204, 205 und 206 sowie zwei Permanentmagnete 207 und 208 auf. In entsprechender Weise weist die Rakelkammer 201 vier Öffnungen 209, 210, 211 und 212 sowie zwei Flächen 213 und 214 aus magnetischem Material auf. Beim Zusammenfügen der beiden Teile greifen die Stutzen 203, 204, 205 und 206 in die Öffnungen 209, 210, 211 und 212, sodass zwischen der Rakelkammer 201 und dem Rakelkammerträger 202 nur noch ein Freiheitsgrad verbleibt. Sobald die beiden Teile dann weiter zusammengefügt werden, beginnt die magnetische Kraft der beiden Permanentmagnete 207 und 208 zu wirken, wodurch die Rakelkammer 201 sicher am Rakelkammerträger 202 fixiert wird. Die vier Stutzen 203, 204, 205 und 206 sind maschinenseitig mit dem Farbkreislauf der Druckmaschine verbunden, sodass mit der Fixierung zwischen der Rakelkammer 201 und dem Rakelkammerträger 202 gleichzeitig auch ein dichtender Anschluss an den Farbkreislauf hergestellt worden ist.The doctor chamber 202 has four nozzles 203, 204, 205 and 206 and two permanent magnets 207 and 208 on. In a corresponding manner, the doctoring chamber 201 has four openings 209, 210, 211 and 212 and two surfaces 213 and 214 of magnetic material. When joining the two parts grip the nozzles 203, 204, 205 and 206 in the openings 209, 210, 211 and 212, so that between the doctoring chamber 201 and the doctor chamber carrier 202 only one degree of freedom remains. As soon as the two parts are then joined together, the magnetic force of the two permanent magnets 207 and 208 begins to act, whereby the doctoring chamber 201 is securely fixed to the doctoring chamber carrier 202. The four nozzles 203, 204, 205 and 206 are connected on the machine side to the ink circuit of the printing press, so that with the fixation between the doctoring chamber 201 and the doctor chamber 202 at the same time a sealing connection to the paint circuit has been made.

Fig. 3 zeigt eine perspektivische Seitenansicht einer Rakelkammer 301 in Montageposition mit dem dazugehörigen Rakelkammerträger 302. Bei der Montage wird die Rakelkammer 301 in Richtung des Schwerkraftvektors 313 auf den Rakelkammerträger 302 aufgesetzt, sodass die Stutzen 303, 304, 305 und 306 analog zu dem Ausführungsbeispiel gemäß Fig. 2 in die hier nicht sichtbaren Öffnungen der Rakelkammer 301 eingreifen. Fig. 3 shows a perspective side view of a doctor blade chamber 301 in the mounting position with the associated doctor chamber carrier 302. During assembly, the doctor chamber 301 is placed in the direction of the gravity vector 313 on the doctor chamber 302, so that the nozzle 303, 304, 305 and 306 analogous to the embodiment of FIG Fig. 2 engage in the not visible here openings of the doctor chamber 301.

Als Variante zu dem Ausführungsbeispiel gemäß Fig. 2 weist der Rakelkammerträger allerdings nunmehr schaltbare Elektromagnete 307 und 308 auf. Außerdem weist die Rakelkammer 301 an den entsprechenden Stellen (hier wiederum nicht sichtbar) zwei Permanentmagnete auf. Während der Montage sind die Elektromagnete 307 und 308 zunächst auf "Abstoßung" geschaltet, sodass die aufgesetzte Rakelkammer 301 in einem gewissen Abstand über dem Rakelkammerträger 302 schwebt, sobald die Stutzen 303, 304, 305 und 306 in die entsprechenden Öffnungen eingegriffen haben. In einem nächsten Schritt schaltet der Monteur die Elektromagnete 307 und 308 nunmehr auf "Anziehung", sodass die Rakelkammer 301 am Rakelkammerträger 302 durch die magnetische Kraft sicher fixiert wird.As a variant of the embodiment according to Fig. 2 however, the doctoring chamber carrier now has switchable electromagnets 307 and 308. In addition, the doctor chamber 301 at the corresponding locations (again not visible here) on two permanent magnets. During assembly, the electromagnets 307 and 308 are initially switched to "repulsion", so that the mounted doctor blade chamber 301 floats at a certain distance above the doctor chamber carrier 302 as soon as the nozzles 303, 304, 305 and 306 have engaged in the corresponding openings. In a next step, the installer now switches the electromagnets 307 and 308 to "attraction", so that the doctor chamber 301 is securely fixed to the doctor chamber carrier 302 by the magnetic force.

Claims (10)

  1. A doctor blade chamber support (202, 302) of a printing press for fastening a doctor blade chamber (101, 201, 301) which, in a printing position, cooperates with a dosing roll (102),
    wherein fastening means are provided on the doctor blade chamber support (202, 302), which hold the doctor blade chamber (101, 201, 301) in a positive-locking manner on the doctor blade chamber support (202, 302) except for one degree of freedom, characterized in that
    the one degree of freedom is aligned at least during the mounting in the direction of the gravity vector and can be acted upon with a switchable and reversible magnetic force in such a manner that the magnetic force holds the doctor blade chamber (101, 201, 301) optionally at a distance from the doctor blade chamber support (202, 302) or fixes it on the doctor blade chamber support (202, 302).
  2. The doctor blade chamber support (202, 302) according to Claim 1, wherein connecting pieces are provided on the doctor blade chamber support (202, 302), with which in the printing operation position a sealing connection to a color cycle on the machine side can be established.
  3. The doctor blade chamber support (202, 302) according to Claim 2, wherein the fastening means are formed by the connecting pieces.
  4. The doctor blade chamber support (202, 302) according to any one of Claims 1 - 3, wherein the magnetic force is applied by permanent magnets.
  5. The doctor blade chamber support (202, 302) according to any one of Claims 1 - 3, wherein the magnetic force is applied by electromagnets.
  6. A method for fastening a doctor blade chamber (101, 201, 301) to a doctor blade chamber support (202, 302) of a printing press, wherein the doctor blade chamber (101, 201, 301) in a printing operation position cooperates with a dosing roll and wherein fastening means are provided on the doctor blade chamber support (202, 302), which hold the doctor blade chamber (101, 201, 301) in a positive-locking manner on the doctor blade chamber support (202, 302) except for one degree of freedom, characterized in that the one degree of freedom is aligned at least during the mounting in the direction of the gravity vector and is acted upon with a switchable and reversible magnetic force in such a manner that the magnetic force holds the doctor blade chamber (101, 201, 301) optionally at a distance from the doctor blade chamber support (202, 302) or fixes it on the doctor blade chamber support (202, 302).
  7. The method according to Claim 6, wherein connecting pieces are provided on the doctor blade chamber support (202, 302), with which in the printing operation position a sealing connection to a color cycle on the machine side can be established.
  8. The method according to Claim 7, wherein the fastening means are formed by the connecting pieces.
  9. The method according to any one of Claims 6 - 8, wherein the magnetic force is applied by permanent magnets.
  10. The method according to any one of claims 6 - 8, wherein the magnetic force is applied by electromagnets.
EP15801175.9A 2014-11-27 2015-11-27 Doctor blade chamber support Active EP3224051B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014224243.6A DE102014224243A1 (en) 2014-11-27 2014-11-27 Chambered doctor blade carrier
PCT/EP2015/077874 WO2016083558A1 (en) 2014-11-27 2015-11-27 Doctor blade chamber support

Publications (2)

Publication Number Publication Date
EP3224051A1 EP3224051A1 (en) 2017-10-04
EP3224051B1 true EP3224051B1 (en) 2019-09-25

Family

ID=54705189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15801175.9A Active EP3224051B1 (en) 2014-11-27 2015-11-27 Doctor blade chamber support

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Country Link
EP (1) EP3224051B1 (en)
DE (1) DE102014224243A1 (en)
ES (1) ES2753612T3 (en)
WO (1) WO2016083558A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108237763B (en) * 2016-12-27 2020-04-21 长胜纺织科技发展(上海)有限公司 Bidirectional scraper device for textile printing machine
DE102018129086A1 (en) * 2018-11-19 2020-05-20 Windmöller & Hölscher Kg Doctor blade chamber carrier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705613B1 (en) * 1993-05-27 1995-11-24 Roland Man Druckmasch Chamber squeegee.
DE4414681A1 (en) * 1993-05-27 1994-12-01 Roland Man Druckmasch Chamber-type doctor
DE4425478A1 (en) * 1994-07-19 1996-02-08 Roland Man Druckmasch Chamber squeegee
DE29601342U1 (en) * 1996-01-26 1996-03-14 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Doctor blade holder
DE10150488B4 (en) 2001-10-16 2005-08-04 Windmöller & Hölscher Kg Front seal of the doctor chamber
DE10316467A1 (en) * 2003-04-09 2004-11-04 Windmöller & Hölscher Kg Carrier for a doctor blade chamber in a rotary printing machine
ES2335458B1 (en) * 2007-10-23 2011-03-22 Comexi, S.A. SIDE SEALING DEVICE FOR A CAMERA AND ROLLER SET OF INK ROLLER.
DE102008025996A1 (en) 2008-05-29 2009-12-24 Windmöller & Hölscher Kg Printing machine with several inking units
HK1123448A2 (en) * 2008-10-22 2009-06-12 Wang Man Ho Ink cup assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102014224243A1 (en) 2016-06-02
WO2016083558A1 (en) 2016-06-02
ES2753612T3 (en) 2020-04-13
EP3224051A1 (en) 2017-10-04

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