EP3124245B1 - Device for emptying the feeding and dispensing line of an inking system of a printing press - Google Patents

Device for emptying the feeding and dispensing line of an inking system of a printing press Download PDF

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Publication number
EP3124245B1
EP3124245B1 EP16176662.1A EP16176662A EP3124245B1 EP 3124245 B1 EP3124245 B1 EP 3124245B1 EP 16176662 A EP16176662 A EP 16176662A EP 3124245 B1 EP3124245 B1 EP 3124245B1
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EP
European Patent Office
Prior art keywords
line
valve
doctor
ink
chamber
Prior art date
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Application number
EP16176662.1A
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German (de)
French (fr)
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EP3124245A1 (en
Inventor
Alexander ELBERS-SCHRICHTEN
Lutz Telljohann
Louisa Wachtel
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
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Windmoeller and Hoelscher KG
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Publication of EP3124245A1 publication Critical patent/EP3124245A1/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
    • B41F31/005—Ink viscosity control means
    • 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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/065—Using inking rails

Definitions

  • the invention relates to a dyeing device with an inking roller according to the preamble of claim 1.
  • Dyeing devices with an inking roller are known.
  • the inking roller is often part of a printing or inking unit in a printing press.
  • the inking roller serves to apply printing ink to a printing roller or another type of ink transfer roller.
  • the cited documents disclose that the inlet and outlet lines open directly into the doctoring chamber
  • the present invention relates to inking devices, moreover a doctor carrier to which the doctor chamber can be coupled comprises.
  • the supply line and the discharge line lead out of the printing unit, in which case valves are arranged outside the printing unit are to allow or interrupt the flow of ink.
  • An interruption of the flow of the ink is particularly necessary when the ink has to be removed, for example, for replacement of all lines.
  • In the feed lines and drain lines remains in this case color that falls victim to the cleaning of the inking, since it must be washed with detergent.
  • the object of the present invention is therefore to propose a dyeing device with which the ink consumption can be reduced.
  • At least one of the valves is arranged on the doctor carrier.
  • the length of the at least one supply line and / or the at least one discharge line can thus be reduced so that the quantity of printing ink which has to be expelled, for example, for cleaning by means of cleaning agent is reduced.
  • the proportion of ink that is lost as a result can be significantly reduced.
  • the valves are more accessible and better maintain, repair or replace.
  • the doctor carrier is movable together with the doctoring chamber relative to the inking roller, so that in this case between the valve and the doctor chamber, for example, a fixed pipe can be provided as a supply line or discharge line, which makes the structure less susceptible to mechanical damage.
  • a connecting line from the supply line in the flow direction of the ink branches off before the valve, which opens in the discharge line in the flow direction behind the valve. It can be performed as practically in a parallel circuit to the doctoring chamber, the ink through the connecting line. If, during operation, the valve in the supply line and the valve in the discharge line are closed, then it is possible to pump the ink from the supply line via said connecting line through the discharge line.
  • the printing ink, which remains behind the valve in the supply line and upstream of the valve in the discharge line, in the flow direction of the printing ink, is minimal due to the arrangement of the valves according to the invention. Sucking over the doctor blade chamber is not possible because air would be sucked in through the vent openings of the doctor chamber, which makes it impossible to pump off parts of the ink.
  • a further valve is advantageously provided in the connecting line, which is arranged on the doctor carrier, in particular fixed there. This allows all mentioned valves to be concentrated in one place on the doctor carrier, which offers design advantages, but also simplifies maintenance. Also, the path length of the connecting line can be kept small in this way.
  • a valve is provided at this point to prevent the flow of ink in the printing operation. However, it may be provided at this point a flow, so that here an adjustable throttle valve may be advantageous.
  • Fig. 1 shows a view of a coloring device according to the prior art.
  • an inking roller designed as an anilox roller 102 can be seen, with which printing ink 103 can be removed from the doctoring chamber 101 and can be applied to a further roller involved in the printing process.
  • this further roller is a format cylinder, which often carries a print motif.
  • This print motif is raised in relation to non-printing areas and is coated with printing ink by the anilox roller 101 so that the printing ink is applied to a printing substrate in a way that is appropriate for the subject.
  • the doctor chamber is supplied via the supply line 110 with ink, which is indicated by the arrow 111.
  • This supply line 110 opens into the Inlet opening 112 of the doctor chamber 102.
  • This inlet opening 112 is arranged centrally in the present embodiment. But it can also be positioned in other places.
  • An anilox roller 102 carries with their wells, which are provided for transporting the ink, often air into the doctor chamber, so that an ink-air mixture is formed in the doctor chamber, which should be removed. For this reason, at least one drain line 113, which begins at the drain opening 114 of the doctor chamber 102.
  • two drain openings 114 and two drain lines 113 are provided, the latter preferably being combined in a T-piece 115 to form a line 116.
  • Both the supply line 110 and the drain line 113 or 116 lead to a box 120, in which pumps, valves, branch elements and other elements are arranged, which are explained in more detail below.
  • the box 120 is shown with a broken line.
  • the supply line 110 begins in a paint bucket 121, which forms a reservoir for the printing ink 103.
  • the ink 103 is thereby set in motion by means of the pump 122 so that it can reach the doctor chamber 102.
  • a pump 123 is provided in the discharge line 116, which ensures that the ink 103 and the ink-air mixture again comes back into the paint bucket.
  • a valve 130 is provided on the pressure side of the pump 122 in the supply line 110.
  • a valve 131 is provided in the drain line 116. With these valves 130, 131, the supply line 110 and the discharge line 116 can be interrupted.
  • a branch 140 is provided, at which a bypass line 141 branches off from the supply line 110.
  • This bypass line opens into the outlet 142 in the discharge line 116 behind the valve 131, also seen in the flow direction of the ink.
  • a valve 143 is provided, with which the bypass line can be interrupted.
  • the Valves 130 and 131 are closed and the valve 141 is closed.
  • air can be sucked in via the line 150 so that the supply line 110, the bypass line 141 and the discharge line 116 can be emptied.
  • the doctor chamber 102 can not be emptied in this way, since, among other things via the vent tubes 117 air would be sucked so that ink would remain at least in the supply line 110.
  • FIG. 2 is a view of the anilox roller 102 side facing away.
  • the anilox roller 102 is rotatably mounted in carriages 202 via its pins 201. These carriages 202 rest on sliders 203 which can slide along rails 204 disposed on machine frame portions 205. A position adjustment of the carriage and thus the anilox roller 102 relative to the machine frame can be done with drive means, which are not shown.
  • the doctor carrier 210 to which the doctor chamber 101 can be fastened, is supported on the carriage 202 via attachments 211 and 212, which are still to be explained, but is still movable relative thereto, which also has to be explained.
  • valves 130, 131 and 143 are arranged on the doctor carrier 210, two valves 131 being provided in the discharge line in the present exemplary embodiment.
  • the term "arranged" is understood to mean that the valves 130, 131 and 143 at least relative to the carriage 202, preferably relative to the doctor carrier 210 are immovable.
  • the valves are attached to a carriage.
  • they are attached to the doctor beam 210.
  • the supply line 110 first opens into the branch 140, which is followed by the valve 130, with which the supply of ink to the Doctor chamber 101 is interrupted.
  • the valve 130 is preferably followed by a small pipe piece 220, which ends in a block 221.
  • the block 221 is fixedly connected to the doctor carrier 210 so that it is stationary relative to this.
  • the feed line 110 continues in this block 221 in at least one feedthrough 222, which is shown in FIG FIG. 3 can be seen.
  • the passage 222 terminates in an opening 223, which is enclosed by a circumferential seal 224, which projects beyond the surface of the block 221 facing the doctor chamber 101.
  • the opening 223 and the inlet opening 112 of the doctoring chamber 101 are congruent to each other when the doctoring chamber 101 is arranged and fixed according to the intended positioning on the doctor carrier 210. In this case, the flow of the ink 103 is optimal.
  • the course of the printing ink is carried out by blocks 231 and 241, which are constructed analogously to the block 221 and function similarly. Their feedthroughs 232 and 242 continue in the discharge lines 113 (see FIG. 2 ).
  • the discharge lines open in the embodiment shown in a union piece 250, in which the ink, which is supplied from two discharge lines 113, is directed into the common discharge line 116.
  • a valve 131 may be provided in each discharge line 113. However, this is not mandatory. Likewise, a single valve 131 may be provided in the discharge line 116, which is then arranged according to the invention on the doctor carrier 210 or on a carriage 202.
  • a line 260 leads into the union piece 250 when, in the flow direction of the ink, the union piece 250 is arranged behind the valve 131.
  • the valve 131 is provided in the discharge line 116, the line 140 opens downstream of the valve 131 in the discharge line 116.
  • the valve 143 With the valve 143, the ink flow in the line 140 is interrupted.
  • the valve 143 is preferably arranged on the doctor carrier 210 or on the carriage 202 analogously to the other valves mentioned. In any case, it is provided according to the invention that the valve 143 is also movable relative to the machine frame.
  • FIG. 4 now shows the view IV-IV from the FIG. 2 , With this FIG. 4 Again, the relative movements of anilox roller, blade carrier with doctor blade chamber and machine frame are illustrated.
  • the machine frame part 205 can be seen, which carries the rail 204, on which the slider 203 is displaceable.
  • the displacement corrections are illustrated by the double arrow 401.
  • Mounted on the slider 203 is the carriage 202, which is often referred to as a "bearing block".
  • the pin 201 of the anilox roller 102 is rotatably mounted.
  • the exemplary direction of rotation of the anilox roller is indicated by the arrow 104. Pins of the anilox roller and slide can also be separated from each other to exchange the anilox roller for another, for example, against one with a different diameter. The possibility of separation should not be explained here.
  • the doctor chamber 101 comprises the doctor blades 105, 106, which abut against the anilox roller 102 in the printing operation. They ensure complete filling of the wells of the anilox roller 102 with ink 103.
  • the doctor blades are each fixed by means of the clamping body 108, 109 on the doctor blade chamber.
  • the front side of the doctor chamber 101 is closed by sealing body 107.
  • Anilox roller, doctor blade chamber, doctor blade and sealing body define a space which contains the printing ink 103 in the printing operation.
  • the ink must be pumped to a large extent from said space, which takes place via the discharge lines.
  • an adjustment mechanism 420 is provided, with which the doctoring chamber 101 carrying doctor blade carrier 210 relative to the carriage and thus is adjustable relative to the anilox roller.
  • the blocks, valves and preferably also the lines are arranged, but in the FIG. 4 for the sake of clarity is not shown.
  • the adjusting mechanism is designed here as an adjustable parallelogram, but the invention is not limited to this embodiment.
  • the parallelogram comprises two legs 411 and 412, which are pivotally connected to the attachment 212 at one end.
  • the respective second ends of the legs 411 and 412 are connected to a coupling rod 413, wherein the coupling rod 413 is rotatably articulated to the legs.
  • the coupling rod is substantially in the direction of the double arrow 414 movable.
  • the doctor carrier 210 is articulated on one of the legs 411 and / or 412 and / or on the coupling rod 413, so that the doctor carrier 210 together with the doctor chamber and in particular the valves along the double arrow 414 is movable.
  • LIST OF REFERENCE NUMBERS 101 blade chamber 102 anilox roller 103 printing ink 104 arrow 105 doctor blade 106 doctor blade 107 seal body 108 clamping bodies 109 clamping bodies 110 supply line 111 Arrow indicating the supply of printing ink 112 inlet opening 113 drain hole 114 drain hole 115 Tee 116 management 117 vent pipe 120 box 121 paint bucket 122 pump 123 pump 130 Valve 131 Valve 140 junction 141 bypass line 142 muzzle 143 Valve 150 management 201 spigot 202 carriage 203 skid 204 rail 205 Machine frame part 210 A doctor beam 211 attachment 212 attachment 220 pipe section 221 block 222 execution 223 opening 231 block 232 execution 241 block 242 execution 250 union piece 260 management 401 Double arrow to clarify

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Description

Die Erfindung betrifft eine Einfärbeeinrichtung mit einer Farbauftragswalze nach dem Oberbegriff des Anspruchs 1.The invention relates to a dyeing device with an inking roller according to the preamble of claim 1.

Einfärbeeinrichtungen mit einer Farbauftragswalze sind bekannt. Die Farbauftragswalze ist oft Teil eines Druck- oder Farbwerks in einer Druckmaschine. Die Farbauftragswalze dient dabei dem Auftragen von Druckfarbe auf eine Druckwalze oder eine andere Art einer Farbübertragungswalze.Dyeing devices with an inking roller are known. The inking roller is often part of a printing or inking unit in a printing press. The inking roller serves to apply printing ink to a printing roller or another type of ink transfer roller.

Solche Einfärbeeinrichtungen sind bekannt aus der EP 2 497 641 A1 und EP 0 350 839 A2 . Die genannten Druckschriften zeigen jeweils:

  • eine Rakelkammer, welche mit der Farbauftragswalze einen geschlossenen Raum ausbildet,
  • wobei die Rakelkammer zumindest eine Zulauf- und zumindest eine Ablauföffnung für Druckfarbe umfasst,
  • und wenigstens eine Zulaufleitung zum Zuführen und wenigstens eine Ablaufleitungen zum Abführen der Druckfarbe, wobei in der Zulaufleitung und in der Ablaufleitung je wenigstens ein Ventil angeordnet ist,
Such inking facilities are known from the EP 2 497 641 A1 and EP 0 350 839 A2 , The cited documents show in each case:
  • a doctoring chamber, which forms a closed space with the inking roller,
  • wherein the doctoring chamber comprises at least one inlet and at least one outlet opening for printing ink,
  • and at least one supply line for supplying and at least one discharge line for discharging the printing ink, wherein at least one valve is arranged in the feed line and in the discharge line,

Die genannten Druckschriften offenbaren, dass die Zu- und Ablaufleitungen direkt in die Rakelkammer münden
Die vorliegende Erfindung bezieht sich auf Einfärbeeinrichtungen, die zudem einen Rakelträger, an welchem die Rakelkammer ankoppelbar ist, umfasst. In der Regel führen dabei die Zulaufleitung und die Ablaufleitung aus dem Druckwerk heraus, wobei dann außerhalb des Druckwerks Ventile angeordnet sind, um den Fluss der Druckfarbe zu ermöglichen oder zu unterbrechen. Eine Unterbrechung des Flusses der Druckfarbe ist insbesondere dann notwendig, wenn die Druckfarbe beispielsweise zum Auswechseln aus sämtlichen Leitungen abgeführt werden muss. In den Zulaufleitungen und Ablaufleitungen verbleibt in diesem Fall Farbe, die der Reinigung der Einfärbeeinrichtung zum Opfer fällt, da sie mit Reinigungsmittel ausgewaschen werden muss.The cited documents disclose that the inlet and outlet lines open directly into the doctoring chamber
The present invention relates to inking devices, moreover a doctor carrier to which the doctor chamber can be coupled comprises. As a rule, the supply line and the discharge line lead out of the printing unit, in which case valves are arranged outside the printing unit are to allow or interrupt the flow of ink. An interruption of the flow of the ink is particularly necessary when the ink has to be removed, for example, for replacement of all lines. In the feed lines and drain lines remains in this case color that falls victim to the cleaning of the inking, since it must be washed with detergent.

Dies führt insgesamt zu einem hohen Farbverbrauch.Overall, this leads to a high color consumption.

Die Aufgabe der vorliegenden Erfindung ist es daher, eine Einfärbeeinrichtung vorzuschlagen, mit welcher sich der Farbverbrauch reduzieren lässt.The object of the present invention is therefore to propose a dyeing device with which the ink consumption can be reduced.

Die Aufgabe wird gelöst durch die Merkmale des Anspruchs 1. Demnach ist vorgesehen, dass wenigstens eines der Ventile an dem Rakelträger angeordnet ist. Damit lässt sich nun die Länge der wenigstens einen Zuführleitung und/oder der wenigstens einen Abführleitungen reduzieren, so dass die Menge der Druckfarbe, die beispielsweise zur Reinigung mittels Reinigungsmittel ausgetrieben werden muss, reduzieren. Der Anteil der Druckfarbe, der dadurch verloren geht, lässt sich so merklich reduzieren. Darüber hinaus ist es vorteilhaft, dass die Ventile besser zugänglich sind und sich so besser warten, reparieren oder austauschen lassen.The object is achieved by the features of claim 1. Accordingly, it is provided that at least one of the valves is arranged on the doctor carrier. The length of the at least one supply line and / or the at least one discharge line can thus be reduced so that the quantity of printing ink which has to be expelled, for example, for cleaning by means of cleaning agent is reduced. The proportion of ink that is lost as a result, can be significantly reduced. In addition, it is advantageous that the valves are more accessible and better maintain, repair or replace.

Besonders vorteilhaft ist es, wenn das wenigstens eine Ventil am Rakelträger befestigt ist. Oft ist der Rakelträger zusammen mit der Rakelkammer relativ zur Farbauftragswalze bewegbar, so dass in diesem Fall zwischen dem Ventil und der Rakelkammer beispielsweise eine feste Rohrleitung als Zuführleitung oder als Abführleitung vorgesehen werden kann, was den Aufbau weniger anfällig für mechanische Beschädigungen macht.It when the at least one valve is attached to the doctor carrier is particularly advantageous. Often, the doctor carrier is movable together with the doctoring chamber relative to the inking roller, so that in this case between the valve and the doctor chamber, for example, a fixed pipe can be provided as a supply line or discharge line, which makes the structure less susceptible to mechanical damage.

Bevorzugt ist es, wenn alle genannten Ventile an dem Rakelträger angeordnet sind. In diesem Fall lässt sich der Farbverbrauch größtmöglich reduzieren.It is preferred if all said valves are arranged on the doctor carrier. In this case, the color consumption can be reduced as much as possible.

In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass eine Verbindungsleitung von der Zuführleitung in Strömungsrichtung der Druckfarbe vor dem Ventil abzweigt, welche in der Abführleitung in Strömungsrichtung hinter dem Ventil mündet. Es kann als praktisch in einer Parallelschaltung zur Rakelkammer die Druckfarbe durch die Verbindungsleitung geführt werden. Werden im Betrieb nun das Ventil in der Zuführleitung und das Ventil in der Abführleitung geschlossen, so ist es möglich, die Druckfarbe aus der Zuführleitung über die genannte Verbindungsleitung durch die Abführleitung abzupumpen. Die Druckfarbe, die - in Strömungsrichtung der Druckfarbe - hinter dem Ventil in der Zuführleitung und vor dem Ventil in der Abführleitung verbleibt, ist durch die erfindungsgemäße Anordnung der Ventile minimal. Ein Absaugen über die Rakelkammer ist nicht möglich, da über die Entlüftungsöffnungen der Rakelkammer Luft angesaugt würde, was ein Abpumpen von Teilen der Druckfarbe unmöglich macht.In a further embodiment of the invention it is provided that a connecting line from the supply line in the flow direction of the ink branches off before the valve, which opens in the discharge line in the flow direction behind the valve. It can be performed as practically in a parallel circuit to the doctoring chamber, the ink through the connecting line. If, during operation, the valve in the supply line and the valve in the discharge line are closed, then it is possible to pump the ink from the supply line via said connecting line through the discharge line. The printing ink, which remains behind the valve in the supply line and upstream of the valve in the discharge line, in the flow direction of the printing ink, is minimal due to the arrangement of the valves according to the invention. Sucking over the doctor blade chamber is not possible because air would be sucked in through the vent openings of the doctor chamber, which makes it impossible to pump off parts of the ink.

In weiterer Ausgestaltung ist vorteilhaft in der Verbindungsleitung ein weiteres Ventil vorgesehen ist, welches an dem Rakelträger angeordnet, insbesondere dort befestigt ist. Damit lassen sich alle genannten Ventile an einem Ort am Rakelträger konzentrieren, was konstruktive Vorteile bietet, aber auch die Wartung vereinfacht. Auch die Weglänge der Verbindungsleitung lässt sich auf diese Weise klein halten. Ein Ventil ist an dieser Stelle vorgesehen, um den Durchfluss von Druckfarbe im Druckbetrieb verhindern zu können. Es kann jedoch an dieser Stelle ein Durchfluss vorgesehen sein, so dass hier ein einstellbares Drosselventil vorteilhaft sein kann.In a further embodiment, a further valve is advantageously provided in the connecting line, which is arranged on the doctor carrier, in particular fixed there. This allows all mentioned valves to be concentrated in one place on the doctor carrier, which offers design advantages, but also simplifies maintenance. Also, the path length of the connecting line can be kept small in this way. A valve is provided at this point to prevent the flow of ink in the printing operation. However, it may be provided at this point a flow, so that here an adjustable throttle valve may be advantageous.

In einer vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass die Zuführ- und/oder die Abführleitung in wenigstens einem Block enden, wobei der Block wenigstens eine Mündungsöffnung umfasst, wobei die Mündungsöffnung mit der Zulauf- oder der Ablauföffnung der Rakelkammer eine gemeinsame Durchflussöffnung bildet. In dieser Ausgestaltung ist es also möglich, dass die Rakelkammer bei dem Positionieren der Rakelkammer an dem Rakelträger gleichzeitig die Mündungsöffnung des Blocks und die Zulauf- oder Ablauföffnung der Rakelkammer zueinander positioniert werden, ohne dass zusätzliche Positionierungen oder gar das Anschließen von Schläuchen erfolgen muss. Mit dem Befestigen der Rakelkammer an dem Rakelträger werden dann die genannten Öffnungen dichtend gegeneinander gedrückt, so dass keine Druckfarbe in den Spalt zwischen dem Block und der Rakelkammer eindringen kann. Dabei kann eine Dichtung, die eine der beiden Öffnungen umgibt, das Eindringen von Druckfarbe noch weiter unterbinden.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung gehen aus der nachfolgenden Beschreibung hervor, in der unter Bezugnahme auf die Figuren verschiedene Ausführungsbeispiele im Einzelnen erläutert sind. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder beliebige Kombinationen erwähnter Merkmale erfindungswesentlich sein. Die einzelnen Figuren zeigen:

Fig. 1
Ansicht einer Einfärbeeinrichtung nach dem Stand der Technik
Fig. 2
Ansicht einer erfindungsgemäße Einfärbeeinrichtung
Fig. 3
Weitere Ansicht einer erfindungsgemäßen Einfärbeeinrichtung
Fig. 4
Ansicht IV-IV aus Fig. 2
In an advantageous development of the invention it is provided that the feed and / or the discharge line terminate in at least one block, wherein the block comprises at least one mouth opening, wherein the mouth opening forms a common flow opening with the inlet or the discharge opening of the doctor chamber. In this embodiment, it is thus possible that the doctor blade chamber at the same time the orifice of the block and the inlet or outlet opening of the doctor chamber are positioned to each other during the positioning of the doctor chamber on the doctor carrier without additional positioning or even the connection of tubes must be made. By attaching the doctor blade chamber to the doctor carrier, the said openings are then pressed sealingly against one another, in this way that no printing ink can penetrate into the gap between the block and the doctoring chamber. In this case, a seal surrounding one of the two openings, the penetration of ink even further prevent.
Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the figures, various embodiments are explained in detail. The features mentioned in the claims and in the description may each be essential to the invention individually or for any combination of mentioned features. The individual figures show:
Fig. 1
View of a coloring device according to the prior art
Fig. 2
View of a dyeing device according to the invention
Fig. 3
Further view of a coloring device according to the invention
Fig. 4
View IV-IV off Fig. 2

Fig. 1 zeigt eine Ansicht einer Einfärbeeinrichtung nach dem Stand der Technik. Zunächst ist eine als Rasterwalze 102 ausgestaltete Farbauftragswalze erkennbar, mit welcher Druckfarbe 103 aus der Rakelkammer 101 entnehmbar ist und auf eine weitere, am Druckprozess beteiligte Walze auftragbar ist. Im Flexodruck, bei dem die vorliegende Erfindung bevorzugt einsetzbar ist, ist diese weitere Walze ein Formatzylinder, welcher oft ein Druckmotiv trägt. Dieses Druckmotiv ist erhaben gegenüber nicht druckenden Bereichen und wird von der Rasterwalze 101 mit Druckfarbe belegt, so dass die Druckfarbe motivgerecht auf einem Bedruckstoff aufgetragen wird. Die Rakelkammer wird über die Zulaufleitung 110 mit Druckfarbe versorgt, was mit dem Pfeil 111 angedeutet wird. Diese Zulaufleitung 110 mündet in der Zulauföffnung 112 der Rakelkammer 102. Diese Zulauföffnung 112 ist im vorliegenden Ausführungsbeispiel mittig angeordnet. Sie kann aber auch an anderen Stellen positioniert sein. Fig. 1 shows a view of a coloring device according to the prior art. First, an inking roller designed as an anilox roller 102 can be seen, with which printing ink 103 can be removed from the doctoring chamber 101 and can be applied to a further roller involved in the printing process. In flexographic printing, in which the present invention is preferably used, this further roller is a format cylinder, which often carries a print motif. This print motif is raised in relation to non-printing areas and is coated with printing ink by the anilox roller 101 so that the printing ink is applied to a printing substrate in a way that is appropriate for the subject. The doctor chamber is supplied via the supply line 110 with ink, which is indicated by the arrow 111. This supply line 110 opens into the Inlet opening 112 of the doctor chamber 102. This inlet opening 112 is arranged centrally in the present embodiment. But it can also be positioned in other places.

Eine Rasterwalze 102 trägt mit ihren Vertiefungen, die zum Transport der Druckfarbe vorgesehen sind, oft Luft in die Rakelkammer ein, so dass ein Druckfarbe-Luft-Gemisch in der Rakelkammer entsteht, welches abgeführt werden sollte. Aus diesem Grunde ist wenigstens eine Ablaufleitung 113, welche an der Ablauföffnung 114 der Rakelkammer 102 beginnt. Im vorliegenden Beispiel sind zwei Ablauföffnungen 114 sowie zwei Ablaufleitungen 113 vorgesehen, wobei letztere vorzugsweise in einem T-Stück 115 zu einer Leitung 116 vereinigt werden.An anilox roller 102 carries with their wells, which are provided for transporting the ink, often air into the doctor chamber, so that an ink-air mixture is formed in the doctor chamber, which should be removed. For this reason, at least one drain line 113, which begins at the drain opening 114 of the doctor chamber 102. In the present example, two drain openings 114 and two drain lines 113 are provided, the latter preferably being combined in a T-piece 115 to form a line 116.

Sowohl die Zuführleitung 110 als auch die Ablaufleitung 113 bzw. 116 führen zu einer Box 120, in welcher Pumpen, Ventile, Abzweigelemente und weitere Elemente angeordnet sind, die im Folgenden näher erläutert werden. Die Box 120 ist mit einer unterbrochenen Linie dargestellt.Both the supply line 110 and the drain line 113 or 116 lead to a box 120, in which pumps, valves, branch elements and other elements are arranged, which are explained in more detail below. The box 120 is shown with a broken line.

Die Zuführleitung 110 beginnt im einem Farbeimer 121, welcher ein Reservoir für die Druckfarbe 103 bildet. Die Druckfarbe 103 wird dabei mittels der Pumpe 122 in Bewegung versetzt, so dass diese in die Rakelkammer 102 gelangen kann. Gleichfalls ist in der Abführleitung 116 eine Pumpe 123 vorgesehen, welche dafür sorgt, dass die Druckfarbe 103 bzw. das Druckfarbe-Luft-Gemisch wieder zurück in den Farbeimer gelangt. Weiterhin ist druckseitig der Pumpe 122 in der Zuführleitung 110 ein Ventil 130 vorgesehen. Saugseitig der Pumpe 123 ist in der Ablaufleitung 116 ein Ventil 131 vorgesehen. Mit diesen Ventilen 130, 131 lassen sich die Zuführleitung 110 und die Abführleitung 116 unterbrechen. In Strömungsrichtung der Druckfarbe 103 in der Zuführleitung gesehen kurz vor dem Ventil 130 ist ein Abzweig 140 vorgesehen, an dem eine Bypassleitung 141 von der Zuführleitung 110 abzweigt. Diese Bypassleitung mündet in der Mündung 142 in die Abführleitung 116 hinter dem Ventil 131, ebenfalls in Strömungsrichtung der Druckfarbe gesehen. In der Bypassleitung 141 ist ein Ventil 143 vorgesehen, mit welchem die Bypassleitung unterbrechbar ist. Um nun das Leitungssystem leer zu pumpen, werden die Ventile 130 und 131 geschlossen und das Ventil 141 geschlossen. Über die Leitung 150 kann zudem Luft angesaugt werden, so dass die Zuführleitung 110, die Bypassleitung 141 und die Abführleitung 116 entleert werden können. Die Rakelkammer 102 kann jedoch nicht auf diese Weise entleert werden, da unter anderem über die Entlüftungsrohre 117 Luft angesaugt würde, so dass Druckfarbe zumindest in der Zuführleitung 110 verbleiben würde.The supply line 110 begins in a paint bucket 121, which forms a reservoir for the printing ink 103. The ink 103 is thereby set in motion by means of the pump 122 so that it can reach the doctor chamber 102. Likewise, a pump 123 is provided in the discharge line 116, which ensures that the ink 103 and the ink-air mixture again comes back into the paint bucket. Furthermore, a valve 130 is provided on the pressure side of the pump 122 in the supply line 110. On the suction side of the pump 123, a valve 131 is provided in the drain line 116. With these valves 130, 131, the supply line 110 and the discharge line 116 can be interrupted. In the direction of flow of the ink 103 in the supply line, just before the valve 130, a branch 140 is provided, at which a bypass line 141 branches off from the supply line 110. This bypass line opens into the outlet 142 in the discharge line 116 behind the valve 131, also seen in the flow direction of the ink. In the bypass line 141, a valve 143 is provided, with which the bypass line can be interrupted. In order to empty the pipeline system empty, the Valves 130 and 131 are closed and the valve 141 is closed. In addition, air can be sucked in via the line 150 so that the supply line 110, the bypass line 141 and the discharge line 116 can be emptied. However, the doctor chamber 102 can not be emptied in this way, since, among other things via the vent tubes 117 air would be sucked so that ink would remain at least in the supply line 110.

Anhand der Figuren 2 bis 4 werden nun wesentliche Elemente der vorliegenden Erfindung erläutert. In der Figur 2 ist eine Ansicht der der Rasterwalze 102 abgewandten Seite zu sehen. Die Rasterwalze 102 ist über ihre Zapfen 201 drehbar in Schlitten 202 gelagert. Diese Schlitten 202 liegen auf Gleitern 203 auf, welche entlang von Schienen 204, die an Maschinengestellteilen 205 angeordnet sind, gleiten können. Eine Positionsverstellung der Schlitten und damit der Rasterwalze 102 relativ zum Maschinengestell kann mit Antriebsmitteln erfolgen, welche jedoch nicht gezeigt sind. Die genannte Positionsverstellung zum vor allem dem Zweck, die Rasterwalze 102 und/oder die weitere, die Druckfarbe übertragende Walze gegen eine solche mit einem anderen Durchmesser austauschen zu können, wobei dann wieder der richtige Druckspalt zwischen den am Druckprozess beteiligten Walzen eingestellt werden kann. Auch der Rakelträger 210, an welchem die Rakelkammer 101 befestigbar ist, stützt sich über Anbauteile 211 und 212, die noch erläutert werden, auf den Schlitten 202 ab, ist aber dennoch relativ zu diesem bewegbar, was ebenfalls noch zu erläutern ist.Based on FIGS. 2 to 4 Now essential elements of the present invention will be explained. In the FIG. 2 is a view of the anilox roller 102 side facing away. The anilox roller 102 is rotatably mounted in carriages 202 via its pins 201. These carriages 202 rest on sliders 203 which can slide along rails 204 disposed on machine frame portions 205. A position adjustment of the carriage and thus the anilox roller 102 relative to the machine frame can be done with drive means, which are not shown. The above-mentioned positional adjustment for above all the purpose of being able to exchange the anilox roller 102 and / or the further roller transferring the ink with one having a different diameter, wherein then again the correct printing gap between the rollers involved in the printing process can be set. The doctor carrier 210, to which the doctor chamber 101 can be fastened, is supported on the carriage 202 via attachments 211 and 212, which are still to be explained, but is still movable relative thereto, which also has to be explained.

Erfindungsgemäß sind an dem Rakelträger 210 die Ventile 130, 131 und 143 angeordnet, wobei im vorliegenden Ausführungsbeispiel in der Ablaufleitung zwei Ventile 131 vorgesehen sind. Der Begriff "angeordnet" ist dabei so zu verstehen, dass die Ventile 130, 131 und 143 wenigstens relativ zu den Schlitten 202, bevorzugt relativ zum Rakelträger 210 unbeweglich sind. Vorzugsweise sind die Ventile an einem Schlitten befestigt. Vorzugsweise sind sie am Rakelträger 210 befestigt.According to the invention, the valves 130, 131 and 143 are arranged on the doctor carrier 210, two valves 131 being provided in the discharge line in the present exemplary embodiment. The term "arranged" is understood to mean that the valves 130, 131 and 143 at least relative to the carriage 202, preferably relative to the doctor carrier 210 are immovable. Preferably, the valves are attached to a carriage. Preferably, they are attached to the doctor beam 210.

Die Zuführleitung 110 mündet zunächst in dem Abzweig 140, welchem das Ventil 130 folgt, mit welchem die Zuführung von Druckfarbe zu der Rakelkammer 101 unterbrechbar ist. Dem Ventil 130 schließt sich bevorzugt ein kleines Rohrstück 220 an, welches in einem Block 221 endet. Der Block 221 ist mit dem Rakelträger 210 fest verbunden, so dass er relativ zu diesem ortsfest ist. Die Zuführleitung 110 setzt sich in diesem Block 221 in wenigstens einer Durchführung 222 fort, was in der Figur 3 zu erkennen ist. Die Durchführung 222 endet in einer Öffnung 223, welche von einer umlaufenden Dichtung 224 umschlossen wird, welche die der Rakelkammer 101 zugewandte Oberfläche des Blocks 221 überragt. Die Öffnung 223 und die Zulauföffnung 112 der Rakelkammer 101 liegen deckungsgleich übereinander, wenn die Rakelkammer 101 gemäß der vorgesehenen Positionierung an dem Rakelträger 210 angeordnet und befestigt ist. In diesem Fall ist der Durchfluss der Druckfarbe 103 optimal.The supply line 110 first opens into the branch 140, which is followed by the valve 130, with which the supply of ink to the Doctor chamber 101 is interrupted. The valve 130 is preferably followed by a small pipe piece 220, which ends in a block 221. The block 221 is fixedly connected to the doctor carrier 210 so that it is stationary relative to this. The feed line 110 continues in this block 221 in at least one feedthrough 222, which is shown in FIG FIG. 3 can be seen. The passage 222 terminates in an opening 223, which is enclosed by a circumferential seal 224, which projects beyond the surface of the block 221 facing the doctor chamber 101. The opening 223 and the inlet opening 112 of the doctoring chamber 101 are congruent to each other when the doctoring chamber 101 is arranged and fixed according to the intended positioning on the doctor carrier 210. In this case, the flow of the ink 103 is optimal.

Auch der Ablauf der Druckfarbe erfolgt durch Blöcke 231 und 241, welche analog zu dem Block 221 aufgebaut sind und gleichartig funktionieren. Deren Durchführungen 232 und 242 setzen sich in den Abführleitungen 113 fort (siehe Figur 2). Die Abführleitungen münden in dem gezeigten Ausführungsbeispiel in einem Vereinigungsstück 250, in dem die Druckfarbe, die aus beiden Abführleitungen 113 zugeführt wird, in die gemeinsame Abführleitung 116 gelenkt wird. In dem gezeigten Ausführungsbeispiel kann in jeder Abführleitung 113 ein Ventil 131 vorgesehen sein. Dies ist jedoch nicht zwingend. Ebenso kann ein einzelnes Ventil 131 in der Abführleitung 116 vorgesehen sein, wobei dieses dann gemäß der Erfindung am Rakelträger 210 oder an einem Schlitten 202 angeordnet ist.The course of the printing ink is carried out by blocks 231 and 241, which are constructed analogously to the block 221 and function similarly. Their feedthroughs 232 and 242 continue in the discharge lines 113 (see FIG. 2 ). The discharge lines open in the embodiment shown in a union piece 250, in which the ink, which is supplied from two discharge lines 113, is directed into the common discharge line 116. In the embodiment shown, a valve 131 may be provided in each discharge line 113. However, this is not mandatory. Likewise, a single valve 131 may be provided in the discharge line 116, which is then arranged according to the invention on the doctor carrier 210 or on a carriage 202.

Von dem Abzweig 140 führt eine Leitung 260 in das Vereinigungsstück 250, wenn in Strömungsrichtung der Druckfarbe das Vereinigungsstück 250 hinter dem Ventil 131 angeordnet ist. Falls das Ventil 131 in der Abführleitung 116 vorgesehen ist, mündet die Leitung 140 stromabwärts des Ventils 131 in die Abführleitung 116. Mit dem Ventil 143 ist die Druckfarbenströmung in der Leitung 140 unterbrechbar. Das Ventil 143 ist analog zu den anderen genannten Ventilen vorzugsweise am Rakelträger 210 oder am Schlitten 202 angeordnet. In jedem Fall ist gemäß der Erfindung vorgesehen, dass das Ventil 143 ebenfalls relativ zum Maschinengestell bewegbar ist.From the branch 140, a line 260 leads into the union piece 250 when, in the flow direction of the ink, the union piece 250 is arranged behind the valve 131. If the valve 131 is provided in the discharge line 116, the line 140 opens downstream of the valve 131 in the discharge line 116. With the valve 143, the ink flow in the line 140 is interrupted. The valve 143 is preferably arranged on the doctor carrier 210 or on the carriage 202 analogously to the other valves mentioned. In any case, it is provided according to the invention that the valve 143 is also movable relative to the machine frame.

Die Figur 4 zeigt nun die Ansicht IV-IV aus der Figur 2. Mit dieser Figur 4 werden nochmals die Relativbewegungen von Rasterwalze, Rakelträger mit Rakelkammer und Maschinengestell verdeutlicht. In dieser Seitenansicht ist das Maschinengestellteil 205 zu erkennen, welche die Schiene 204 trägt, auf welcher der Gleiter 203 verschiebbar ist. Die Verschieberichtungen werden durch den Doppelpfeil 401 verdeutlicht. Auf dem Gleiter 203 aufgesattelt ist der Schlitten 202, der oft auch als "Lagerbock" bezeichnet wird. In dem Schlitten 202 ist der Zapfen 201 der Rasterwalze 102 drehbar gelagert. Die beispielhaft eingezeichnete Drehrichtung der Rasterwalze wird mit dem Pfeil 104 angezeigt. Zapfen der Rasterwalze und Schlitten können auch voneinander getrennt werden, um die Rasterwalze gegen eine andere, beispielsweise gegen eine mit einem anderen Durchmesser, austauschen zu können. Die Möglichkeit der Trennung soll hier aber nicht näher erläutert werden.The FIG. 4 now shows the view IV-IV from the FIG. 2 , With this FIG. 4 Again, the relative movements of anilox roller, blade carrier with doctor blade chamber and machine frame are illustrated. In this side view, the machine frame part 205 can be seen, which carries the rail 204, on which the slider 203 is displaceable. The displacement corrections are illustrated by the double arrow 401. Mounted on the slider 203 is the carriage 202, which is often referred to as a "bearing block". In the carriage 202, the pin 201 of the anilox roller 102 is rotatably mounted. The exemplary direction of rotation of the anilox roller is indicated by the arrow 104. Pins of the anilox roller and slide can also be separated from each other to exchange the anilox roller for another, for example, against one with a different diameter. The possibility of separation should not be explained here.

Die Rakelkammer 101 umfasst die Rakelmesser 105, 106, welche im Druckbetrieb an der Rasterwalze 102 anliegen. Sie stellen das vollständige Füllen der Näpfchen der Rasterwalze 102 mit Druckfarbe 103 sicher. Die Rakelmesser werden jeweils mittels der Klemmkörper 108, 109 an der Rakelkammer festgelegt. Stirnseitig ist die Rakelkammer 101 durch Dichtungskörper 107 verschlossen. Rasterwalze, Rakelkammer, Rakelmesser und Dichtungskörper umgrenzen einen Raum, welcher im Druckbetrieb die Druckfarbe 103 enthält. Bereits zum Entfernen der Rakelkammer 101 von der Rasterwalze 102 muss die Druckfarbe zu einem großen Teil aus dem genannten Raum abgepumpt werden, was über die Abführleitungen erfolgt.The doctor chamber 101 comprises the doctor blades 105, 106, which abut against the anilox roller 102 in the printing operation. They ensure complete filling of the wells of the anilox roller 102 with ink 103. The doctor blades are each fixed by means of the clamping body 108, 109 on the doctor blade chamber. The front side of the doctor chamber 101 is closed by sealing body 107. Anilox roller, doctor blade chamber, doctor blade and sealing body define a space which contains the printing ink 103 in the printing operation. Already to remove the doctoring chamber 101 of the anilox roller 102, the ink must be pumped to a large extent from said space, which takes place via the discharge lines.

Um die Rakelkammer 101 an die Rasterwalze 102 an- und von dieser abstellen zu können und auch, um die Rakelkammer 101 an verschiedene Durchmesser der Rasterwalze anpassen zu können, ist eine Verstellmechanik 420 vorgesehen, mit welcher der die Rakelkammer 101 tragende Rakelträger 210 relativ zum Schlitten und damit relativ zur Rasterwalze verstellbar ist. An dem Rakelträger sind, wie bereits mehrfach erläutert wurde, die Blöcke, Ventile und vorzugsweise auch die Leitungen angeordnet, was aber in der Figur 4 der Übersichtlichkeit halber nicht gezeigt ist.In order to the doctoring chamber 101 to the anilox roller 102 and to be able to turn off this and also to adjust the doctoring chamber 101 to different diameters of the anilox, an adjustment mechanism 420 is provided, with which the doctoring chamber 101 carrying doctor blade carrier 210 relative to the carriage and thus is adjustable relative to the anilox roller. At the doctor carrier, as has already been explained several times, the blocks, valves and preferably also the lines are arranged, but in the FIG. 4 for the sake of clarity is not shown.

Die Verstellmechanik ist hier als verstellbares Parallelogramm ausgeführt, die Erfindung ist jedoch nicht auf diese Ausführungsform beschränkt. Das Parallelogramm umfasst zwei Schenkel 411 und 412, die jeweils einendig schwenkbar am Anbauteil 212 angelenkt sind. Die jeweiligen zweiten Enden der Schenkel 411 und 412 sind mit einer Koppelstange 413 verbunden, wobei die Koppelstange 413 drehbar an den Schenkeln angelenkt ist. Mit dieser Anordnung ist die Koppelstange im Wesentlichen in Richtung des Doppelpfeils 414 bewegbar.The adjusting mechanism is designed here as an adjustable parallelogram, but the invention is not limited to this embodiment. The parallelogram comprises two legs 411 and 412, which are pivotally connected to the attachment 212 at one end. The respective second ends of the legs 411 and 412 are connected to a coupling rod 413, wherein the coupling rod 413 is rotatably articulated to the legs. With this arrangement, the coupling rod is substantially in the direction of the double arrow 414 movable.

Der Rakelträger 210 ist an einem der Schenkel 411 und/oder 412 und/oder an der Koppelstange 413 angelenkt, so dass der Rakelträger 210 mitsamt der Rakelkammer und insbesondere der Ventile entlang des Doppelpfeils 414 bewegbar ist. Bezugszeichenliste 101 Rakelkammer 102 Rasterwalze 103 Druckfarbe 104 Pfeil 105 Rakelmesser 106 Rakelmesser 107 Dichtungskörper 108 Klemmkörper 109 Klemmkörper 110 Zulaufleitung 111 Pfeil zur Andeutung der Versorgung mit Druckfarbe 112 Zulauföffnung 113 Ablauföffnung 114 Ablauföffnung 115 T-Stück 116 Leitung 117 Entlüftungsrohr 120 Box 121 Farbeimer 122 Pumpe 123 Pumpe 130 Ventil 131 Ventil 140 Abzweig 141 Bypassleitung 142 Mündung 143 Ventil 150 Leitung 201 Zapfen 202 Schlitten 203 Gleiter 204 Schiene 205 Maschinengestellteil 210 Rakelträger 211 Anbauteil 212 Anbauteil 220 Rohrstück 221 Block 222 Durchführung 223 Öffnung 231 Block 232 Durchführung 241 Block 242 Durchführung 250 Vereinigungsstück 260 Leitung 401 Doppelpfeil zur Verdeutlichung der Verschieberichtung 411 Schenkel 412 Schenkel 413 Koppelstange 414 Doppelpfeil 420 Verstellmechanik The doctor carrier 210 is articulated on one of the legs 411 and / or 412 and / or on the coupling rod 413, so that the doctor carrier 210 together with the doctor chamber and in particular the valves along the double arrow 414 is movable. LIST OF REFERENCE NUMBERS 101 blade chamber 102 anilox roller 103 printing ink 104 arrow 105 doctor blade 106 doctor blade 107 seal body 108 clamping bodies 109 clamping bodies 110 supply line 111 Arrow indicating the supply of printing ink 112 inlet opening 113 drain hole 114 drain hole 115 Tee 116 management 117 vent pipe 120 box 121 paint bucket 122 pump 123 pump 130 Valve 131 Valve 140 junction 141 bypass line 142 muzzle 143 Valve 150 management 201 spigot 202 carriage 203 skid 204 rail 205 Machine frame part 210 A doctor beam 211 attachment 212 attachment 220 pipe section 221 block 222 execution 223 opening 231 block 232 execution 241 block 242 execution 250 union piece 260 management 401 Double arrow to clarify the direction of movement 411 leg 412 leg 413 coupling rod 414 double arrow 420 adjustment mechanism

Claims (6)

  1. An inking device with an ink application roller comprising
    - a doctor blade chamber (101), which with an ink application roller forms a closed space,
    - wherein the doctor blade chamber (101) comprises at least one feed- (112) and at least one discharge opening (113, 114) for printing ink,
    - at least one feed line (112) for feeding and at least one discharge line (113, 114) for discharging the printing ink, wherein in each case at least one valve (130, 131) is arranged in the feed line (112) and in the discharge line (113, 114),
    characterized in that
    the inking device comprises a doctor blade carrier (210), to which the doctor blade chamber (101) can be coupled, and
    at least one of the valves (130, 131) is arranged on the doctor blade carrier (210).
  2. An inking device according to Claim 1,
    characterized in that
    the valve (130, 131) is secured to the doctor blade carrier (210).
  3. An inking device according to any one of the preceding claims,
    characterized in that
    both valves (130, 131) are arranged on the doctor blade carrier (210).
  4. An inking device according to any one of the preceding claims,
    characterized in that
    a connecting line branches off from the feed line (11) in the flow direction of the printing ink in front of the valve (130, 131), which flows into the discharge line in the flow direction behind the valve (130, 131).
  5. An inking device according to Claim 4,
    characterized in that
    in the connecting line a further valve (143) is provided, which is arranged on the doctor blade carrier (210), in particular, is secured there.
  6. An inking device according to any one of the preceding claims,
    characterized in that
    the feed- (110) and/or discharge line (113, 114) ends in a block (221) wherein the block (221) comprises at least one mouth opening (142), wherein the mouth opening (142) forms a common through-flow opening with the feed- (112) or the discharge opening (113, 114) of the doctor blade chamber (101).
EP16176662.1A 2015-07-31 2016-06-28 Device for emptying the feeding and dispensing line of an inking system of a printing press Active EP3124245B1 (en)

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CN111521472A (en) * 2020-05-27 2020-08-11 海南大学 Staining method for detecting pathogenic fungi of leaves

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Publication number Priority date Publication date Assignee Title
DE3823340C2 (en) * 1988-07-09 1995-12-07 Fischer & Krecke Gmbh & Co Chamber doctor blade for rotary printing machines
JP5529497B2 (en) * 2009-11-05 2014-06-25 三菱重工印刷紙工機械株式会社 Ink cleaning method and apparatus for flexographic printing machine

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