EP0765749B1 - Doctor blade assembly for the inking device with circulation of ink in a rotary printing machine - Google Patents

Doctor blade assembly for the inking device with circulation of ink in a rotary printing machine Download PDF

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Publication number
EP0765749B1
EP0765749B1 EP96113148A EP96113148A EP0765749B1 EP 0765749 B1 EP0765749 B1 EP 0765749B1 EP 96113148 A EP96113148 A EP 96113148A EP 96113148 A EP96113148 A EP 96113148A EP 0765749 B1 EP0765749 B1 EP 0765749B1
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EP
European Patent Office
Prior art keywords
doctor
tube
inking
bores
arrangement according
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.)
Expired - Lifetime
Application number
EP96113148A
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German (de)
French (fr)
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EP0765749A1 (en
Inventor
Fritz Achelpohl
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 EP0765749A1 publication Critical patent/EP0765749A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—Ink rail devices for inking ink rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/04—Cleaning arrangements or devices for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • 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
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles

Definitions

  • the invention relates to a doctor blade device for a rinse inking unit a rotary printing press consisting of a through a profile strip formed with a groove-shaped recess Doctor knife carrier, on which approximately roof-shaped and parallel to each other two doctor blades that can be adjusted to an inking or anilox roller attached together with the inking roller, the channel-shaped recess of the doctor blade carrier and at the end an ink chamber on this provided sealant limit from lines for supplying and discharging paint into the Ink chamber and out of it, with a spray device Spray nozzles for spraying a cleaning liquid into the Ink chamber and adjustment devices for pressing the doctor blade carrier to the inking roller.
  • an ink chamber doctor blade of this type is known in the profile strip forming the rear wall of the ink chamber a sewer system is integrated, which is part of the Spray nozzles leading additional holes is provided.
  • This Known doctor blade device is expensive to manufacture because it means a significant effort using the profile bar inner duct and distributor system connected to the individual spray nozzles for the cleaning liquid.
  • the object of the invention is therefore a doctor blade device to create the type specified, which deals with a lower Can make effort.
  • this object is achieved in that the End walls of the ink chamber carrying sealant are provided with holes in which a pipe is held, that over its length at a distance from each other with the spray nozzles forming holes is provided, and that one end of the tube with a connection for supplying washing liquid is provided.
  • the doctor device according to the invention can be very easily with a spray device for cleaning after completion a print job or when changing the printing color provided that the tube having the spray nozzles in the holes the side walls of the ink chamber is held.
  • This Holes can also be retrofitted, so that it is easily possible to already be in operation or existing doctor devices with the carrying the spray nozzles Retrofit pipe.
  • this must be the connection for the supply of washing liquid opposite end of the tube to be closed.
  • This closure can be effected in a simple manner by that a bore in a side part closes the end of the tube Blind hole is.
  • the webs Limit the front edges with the inking roller throttle gap and which are aligned holes in which a pipe is held that is spaced apart along its length is provided with holes forming the spray nozzles, and that one end of the tube with a connection for supplying washing liquid is provided.
  • a squeegee device in which weirs forming sidewalls Divide secondary chambers is in the patent application 195 16 223.4 to which reference is made.
  • the weirs Forming webs are suitable for mounting in a favorable manner a tube provided with spray nozzles.
  • doctor device is intended to solve the problem that an insert part can be inserted into the recess in which a Pipe is supported, spaced apart along its length is provided with holes forming the spray nozzles, and that a End of the tube with a connection for supplying washing liquid is provided.
  • This insert can be easily and quickly into the channel-shaped recess of the doctor blade holder insert without the profile forming the doctor blade carrier would have to be provided with a special channel system.
  • Insert with two radial side compartments Webs is provided, the front edges with the inking roller Limit throttle gaps and those with aligned holes are provided in which the pipe provided with the spray nozzles is supported.
  • an insert part can be inserted into the recess is that with one to the axis of the inking roller parallel bore is provided, which with spray nozzles Cross holes is provided. According to this configuration needs only the insert in the channel-shaped recess of the doctor blade holder to be used to achieve the desired spray nozzle arrangement to have. This configuration also allows doctoring devices in operation or present Retrofit spray nozzle arrangements.
  • This insert part with two radial is also expedient Provide webs, the front edges with the paint roller Limit throttle gap.
  • the insert with a bead parallel to the axis of the inking roller is provided, which has a narrow gap with the inking roller limited.
  • This bead forms an auxiliary squeegee, as it were Prevention of ghosting prevented.
  • the holes forming the spray nozzles are expedient arranged in two parallel rows so that they are essentially directed to the doctor blade and in particular Flush the corners of the ink chamber when cleaning fluid is fed under pressure.
  • the insert parts expediently consist of plastic.
  • the pressure cylinder block which is also designed as a slide is in the usual and therefore not described in detail Way one side of an anilox roller 2 stored.
  • the upper ends of the parallel link 5, 6 are pivotable about the hinge axes 7, 8 with the a coupling-forming carrier 9 connected.
  • the carrier 9 is in one piece formed with the doctor blade 10.
  • the doctor blade carrier 10 is by screws provided with handwheels 11 with the doctor blade carrier 16 connected.
  • the piston rod 12 of a pneumatic cylinder 13 articulated, which in turn via a support piece 14 articulated by the joint 15 on the inking unit 1 is.
  • the hinge axes 4 of the parallel link 6 are with an eccentric adjustment 4 'provided, due to which the pivot axis the parallel link 6 can be raised and lowered.
  • the parallel link 5, 6 each of the two anilox roller 2 storing Inking box can double to increase stability be executed.
  • the doctor blade carrier 16 consists of a profile strip, the 1 can be seen.
  • the bar of the doctor blade holder 16 is provided with a groove 20 forming the interior of the paint.
  • This gutter opens out in the lower middle area Fig. 3 can be seen, a bore supplying the printing ink 21.
  • the channel is through the Bores 22, 23 which remove printing ink are cut.
  • the Vent holes 24, 25 open into the upper end regions of the channel.
  • the end faces of the gutter edges are chamfered in opposite directions. On these end faces are by clamps 28, 29 the doctor blade 30, 31 in the usual and therefore not closer attached described.
  • Seals 33, 34 are on the sides of the doctor blade carrier 11 arranged that the ink interior 20 opposite the anilox roller 2nd seal. To hold these seals are with the side End faces of the bar of the doctor blade carrier cover 35, 36 screwed, the end walls of the ink chamber 20th form.
  • The is symmetrical to the central plane 40 of the doctor blade carrier 16 Cover 35 with a through hole and cover 36 with a flat blind hole. There is a in the holes Pipe 41 held, the bore of the cover 35 substantially enforced.
  • the tube 41 is in two rows on both sides of the
  • the center plane 40 of the doctor blade carrier 16 is provided with bores 42, form the spray nozzles.
  • the bores 42 of each row include a centering angle of approximately 90 °, so that the through these spray nozzles formed approximately on the back of the Doctor blades 30, 31 are directed.
  • the tube 41 has a suitable distance from the bottom of the trough-shaped Recess so that gusset spaces are avoided, from which paint residues are difficult to remove.
  • the ink chamber can in the manner shown with lateral Web 44, 45 may be provided which the ink chamber in a middle Divide the main chamber and side secondary chambers 46, 47.
  • the Crosspieces have rounded edges corresponding to the radius of the anilox roller 2 Front edges 48 on, with the anilox roller 2 throttle gaps Limit 49.
  • the webs 44, 45 are provided with openings, so that the paint from the main chamber into the secondary chambers 46, 47th can reach.
  • the webs 44, 45 are symmetrical to the central plane 40 of the Doctor knife carrier 16 provided with aligned holes, the penetrates the tube 41.
  • the aligned holes of the two webs 44, 45 can also be used alone to hold the spray nozzle tube 41 can be used.
  • the embodiment of the doctor device according to FIGS. 4 to 6 differs from that according to FIGS. 1 to 3 essentially only in that in the recess forming the ink chamber 20 an insert part 50 made of plastic in the one shown in the figures Way inserted and fastened that in the central plane 40 of the doctor blade carrier 16 with a the top of the Insert-cutting hole is provided, in which the Spray nozzle tube 41 inserted or in which this is held.
  • the Insert part 50 is in the end regions of the interior of the ink chamber again provided with radial webs 52, 53, the side secondary chambers compartment. These webs 52, 53 are also aligned Provide holes that pass through the spray nozzle tube 41.
  • the spray nozzle tube 41 is in the same way as the spray nozzle tube 1 to 3 on both sides of the central plane 40 with Bores 42 forming spray nozzles. These holes are located in all the embodiments also in the secondary chambers separated by the webs.
  • FIGS. 7 to 9 differs 4 to 6 in that the insert 60 from Plastic not with an inserted spray nozzle tube, but is provided with a bore 61 which, like the spray nozzle tubes, runs parallel to the axis of the anilox roller 2.
  • the hole 61 is again on both sides of the central plane 40 with spray nozzles forming transverse bores 62 which have a centering angle of about 90 ° and on the back of the doctor blade are directed.
  • the insert 60 is in the central plane 40 with a longitudinal Bead 64 provided a gap with the anilox roller 2 forms and in a known manner the prevention of ghosting serves.
  • the insert part 60 is also compartmentalized with side secondary chambers Provide webs 65, 66.
  • the bore 61 is on its right side, which can be seen in FIG. 8 closed by the cover part 36. On the left the bore 61 is aligned with a bore 67 of the cover part 35.
  • the bore 67 or the end of the spray nozzle tube 41 that the Cover part 35 penetrates in a hole, is with a connection provided for supplying a washing liquid.
  • the washing liquid flows through the Bores 22, 23 in the secondary chambers.
  • Additional holes can be made in the individual spray nozzles also special spray heads are used with facilities are provided, which prevent the penetration of color.

Abstract

A doctor blade unit for the inking system of a rotary printing press includes a doctor blade carrier that is formed by a profiled rail with a channel-shaped recess. The doctor blade carrier is provided with two doctor blades that can be screwed to the carrier and moved down on an ink application roller as well as sealing elements at its ends. The face walls on the ends of the ink chamber which carry the sealing elements are provided with holes for accommodating a pipe that is provided with spaced apart holes that form spraying nozzles over its entire length. One end of the pipe is provided with a connection for supplying cleaning fluid.

Description

Die Erfindung betrifft eine Rakelvorrichtung für ein Spülfarbwerk einer Rotationsdruckmaschine, bestehend aus einem durch eine Profilleiste mit einer rinnenförmigen Ausnehmung gebildeten Rakelmesserträger, auf dem etwa dachförmig und parallel zueinander zwei an eine Farbauftrags- oder Rasterwalze anstellbare Rakelmesser befestigt sind, die zusammen mit der Farbauftragswalze, der rinnenförmigen Ausnehmung des Rakelmesserträgers und endseitig an diesem vorgesehenen Dichtungsmittel eine Farbkammer begrenzen, aus Leitungen zum Zu- und Abführen von Farbe in die Farbkammer und aus ihr heraus, aus einer Sprüheinrichtung mit Sprühdüsen zum Versprühen einer Reinigungsflüssigkeit in die Farbkammer und aus Anstelleinrichtungen zum Andrücken des Rakelmesserträgers an die Farbauftragswalze.The invention relates to a doctor blade device for a rinse inking unit a rotary printing press consisting of a through a profile strip formed with a groove-shaped recess Doctor knife carrier, on which approximately roof-shaped and parallel to each other two doctor blades that can be adjusted to an inking or anilox roller attached together with the inking roller, the channel-shaped recess of the doctor blade carrier and at the end an ink chamber on this provided sealant limit from lines for supplying and discharging paint into the Ink chamber and out of it, with a spray device Spray nozzles for spraying a cleaning liquid into the Ink chamber and adjustment devices for pressing the doctor blade carrier to the inking roller.

Aus der US-PS 54 10 961 ist eine Farbkammerrakel dieser Art bekannt, bei der in die die Rückwand der Farbkammer bildenden Profilleiste ein Kanalsystem eingearbeitet ist, das mit zu den Sprühdüsen führenden zusätzlichen Bohrungen versehen ist. Diese bekannte Rakelvorrichtung ist in ihrer Herstellung teuer, weil es einen erheblichen Aufwand bedeutet, die Profilleiste mit dem inneren, mit den einzelnen Sprühdüsen verbundenen Kanal- und Verteilersystem für die Reinigungsflüssigkeit zu versehen. From US-PS 54 10 961, an ink chamber doctor blade of this type is known in the profile strip forming the rear wall of the ink chamber a sewer system is integrated, which is part of the Spray nozzles leading additional holes is provided. This Known doctor blade device is expensive to manufacture because it means a significant effort using the profile bar inner duct and distributor system connected to the individual spray nozzles for the cleaning liquid.

Aufgabe der Erfindung ist es daher, eine Rakelvorrichtung der eingangs angegebenen Art zu schaffen, die sich mit einem geringeren Aufwand herstellen läßt.The object of the invention is therefore a doctor blade device to create the type specified, which deals with a lower Can make effort.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die die Dichtungsmittel tragenden endseitigen Stirnwände der Farbkammer mit Bohrungen versehen sind, in denen ein Rohr gehaltert ist, das über seine Länge im Abstand voneinander mit die Sprühdüsen bildenden Bohrungen versehen ist, und daß ein Ende des Rohrs mit einem Anschluß zum Zuführen von Waschflüssigkeit versehen ist.According to the invention this object is achieved in that the End walls of the ink chamber carrying sealant are provided with holes in which a pipe is held, that over its length at a distance from each other with the spray nozzles forming holes is provided, and that one end of the tube with a connection for supplying washing liquid is provided.

Die erfindungsgemäße Rakelvorrichtung läßt sich sehr einfach dadurch mit einer Sprüheinrichtung zum Reinigen nach der Beendigung eines Druckauftrages oder bei einem Wechsel der Druckfarbe versehen, daß das die Sprühdüsen aufweisende Rohr in den Bohrungen der seitlichen Wandungen der Farbkammer gehaltert wird. Diese Bohrungen lassen sich auch noch nachträglich anbringen, so daß es ohne weiteres möglich ist, bereits im Betrieb befindliche oder vorhandene Rakelvorrichtungen mit dem die Sprühdüsen tragenden Rohr nachzurüsten.The doctor device according to the invention can be very easily with a spray device for cleaning after completion a print job or when changing the printing color provided that the tube having the spray nozzles in the holes the side walls of the ink chamber is held. This Holes can also be retrofitted, so that it is easily possible to already be in operation or existing doctor devices with the carrying the spray nozzles Retrofit pipe.

Selbstverständlich muß das dem Anschluß zur Zuführung von Waschflüssigkei gegenüberliegende Ende des Rohrs verschlossen sein. Dieser Verschluß kann auf einfache Weise dadurch bewirkt werden, daß eine Bohrung eines Seitenteils eine das Rohr endseitig verschließende Sacklochbohrung ist.Of course, this must be the connection for the supply of washing liquid opposite end of the tube to be closed. This closure can be effected in a simple manner by that a bore in a side part closes the end of the tube Blind hole is.

Nach einer Weiterbildung, für die selbständiger Schutz beansprucht wird, ist vorgesehen, daß in der Farbkammer zwei radiale, seitliche Nebenkammern abteilende Stege angeordnet sind, deren Stirnkanten mit der Farbauftragswalze Drosselspalte begrenzen und die mit fluchtenden Bohrungen versehen sind, in denen ein Rohr gehaltert ist, das über seine Länge im Abstand voneinander mit die Sprühdüsen bildenden Bohrungen versehen ist, und daß ein Ende des Rohrs mit einem Anschluß zum Zuführen von Waschflüssigkeit versehen ist.After further training, for which independent protection is claimed is provided that two radial, lateral side compartments are arranged, the webs Limit the front edges with the inking roller throttle gap and which are aligned holes in which a pipe is held that is spaced apart along its length is provided with holes forming the spray nozzles, and that one end of the tube with a connection for supplying washing liquid is provided.

Eine Rakelvorrichtung, bei der Wehre bildende Stege seitliche Nebenkammern abteilen, ist in der Patentanmeldung 195 16 223.4 beschrieben worden, auf die Bezug genommen wird. Die die Wehre bildenden Stege eignen sich in günstiger Weise zur Halterung eines mit Sprühdüsen versehenen Rohres.A squeegee device in which weirs forming sidewalls Divide secondary chambers is in the patent application 195 16 223.4 to which reference is made. The weirs Forming webs are suitable for mounting in a favorable manner a tube provided with spray nozzles.

Nach einer weiteren erfindungsgemäßen Ausgestaltung der Rakelvorrichtung ist zur Lösung der gestellten Aufgabe vorgesehen, daß in die Ausnehmung ein Einsatzteil einsetzbar ist, in dem ein Rohr gehaltert ist, das über seine Länge im Abstand voneinander mit die Sprühdüsen bildenden Bohrungen versehen ist, und daß ein Ende des Rohrs mit einem Anschluß zum Zuführen von Waschflüssigkeit versehen ist. Dieses Einsatzteil läßt sich einfach und schnell in die rinnenförmige Ausnehmung des Rakelmesserträgers einsetzen, ohne daß das den Rakelmesserträger bildende Profil mit einem besonderem Kanalsystem versehen werden müßte.According to a further embodiment of the doctor device according to the invention is intended to solve the problem that an insert part can be inserted into the recess in which a Pipe is supported, spaced apart along its length is provided with holes forming the spray nozzles, and that a End of the tube with a connection for supplying washing liquid is provided. This insert can be easily and quickly into the channel-shaped recess of the doctor blade holder insert without the profile forming the doctor blade carrier would have to be provided with a special channel system.

Nach einer vorteilhaften Ausgestaltung ist vorgesehen, daß das Einsatzteil mit zwei radialen, seitliche Nebenkammern abteilenden Stegen versehen ist, deren Stirnkanten mit der Farbauftragswalze Drosselspalte begrenzen und die mit fluchtenden Bohrungen versehen sind, in denen das mit den Sprühdüsen versehene Rohr gehaltert ist.According to an advantageous embodiment, it is provided that Insert with two radial side compartments Webs is provided, the front edges with the inking roller Limit throttle gaps and those with aligned holes are provided in which the pipe provided with the spray nozzles is supported.

Nach einer letzten erfinderischen Ausgestaltung der Rakelvorrichtung ist vorgesehen, daß in die Ausnehmung ein Einsatzteil einsetzbar ist, das mit einer zu der Achse der Farbauftragswalze parallelen Bohrung versehen ist, die mit Sprühdüsen bildenden Querbohrungen versehen ist. Nach dieser Ausgestaltung braucht nur das Einsatzteil in die rinnenförmige Ausnehmung des Rakelmesserträgers eingesetzt zu werden, um die gewünschte Sprühdüsenanordnung zu haben. Auch diese Ausgestaltung gestattet es, bereits im Betrieb befindliche oder vorhandene Rakelvorrichtungen mit Sprühdüsenanordnungen nachzurüsten.After a last inventive design of the doctor device it is provided that an insert part can be inserted into the recess is that with one to the axis of the inking roller parallel bore is provided, which with spray nozzles Cross holes is provided. According to this configuration needs only the insert in the channel-shaped recess of the doctor blade holder to be used to achieve the desired spray nozzle arrangement to have. This configuration also allows doctoring devices in operation or present Retrofit spray nozzle arrangements.

Zweckmäßigerweise ist auch dieses Einsatzteil mit zwei radialen Stegen versehen, deren Stirnkanten mit der Farbauftragswalze Drosselspalte begrenzen.This insert part with two radial is also expedient Provide webs, the front edges with the paint roller Limit throttle gap.

Nach einer Weiterentwicklung ist vorgesehen, daß das Einsatzteil mit einer zu der Achse der Farbauftragswalze parallelen Wulst versehen ist, die mit der Farbauftragswalze einen schmalen Spalt begrenzt. Diese Wulst bildet gleichsam eine Hilfsrakel, die das Entstehen von Geisterbildern verhindert.After further development, it is provided that the insert with a bead parallel to the axis of the inking roller is provided, which has a narrow gap with the inking roller limited. This bead forms an auxiliary squeegee, as it were Prevention of ghosting prevented.

Die die Sprühdüsen bildenden Bohrungen werden zweckmäßigerweise in zwei zueinander parallelen Reihen derart angeordnet, daß sie im wesentlichen auf die Rakelmesser gerichtet sind und insbesondere die Ecken der Farbkammer freispülen, wenn Reinigungsflüssigkeit unter Druck zugeführt wird.The holes forming the spray nozzles are expedient arranged in two parallel rows so that they are essentially directed to the doctor blade and in particular Flush the corners of the ink chamber when cleaning fluid is fed under pressure.

Die Einsatzteile bestehen zweckmäßigerweise aus Kunststoff.The insert parts expediently consist of plastic.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt

Fig. 1
eine Seitenansicht des Farbwerkbocks mit längs der Linie I-I in Fig. 2 geschnittener Farbkammerrakel,
Fig. 2
einen Schnitt durch den Rakelmesserträger längs der Linie II-II in Fig. 1,
Fig. 3
eine Ansicht der Farbkammerrakel in Richtung des Pfeils III in Fig. 2,
Fig. 4 bis Fig. 6
den Fig. 1 bis 3 entsprechende Darstellungen einer zweiten Ausführungsform einer Rakelvorrichtung und
Fig. 7 bis Fig. 9
den Fig. 1 bis 3 entsprechende Darstellungen einer dritten Ausführungsform einer Rakelvorrichtung.
Embodiments of the invention are explained below with reference to the drawing. In this shows
Fig. 1
3 shows a side view of the inking unit with ink chamber doctor blade cut along line II in FIG. 2,
Fig. 2
2 shows a section through the doctor blade carrier along the line II-II in FIG. 1,
Fig. 3
2 shows a view of the ink chamber doctor blade in the direction of arrow III in FIG. 2,
4 to 6
1 to 3 corresponding representations of a second embodiment of a doctor device and
7 to 9
1 to 3 corresponding representations of a third embodiment of a doctor device.

In dem Farbwerksbock 1, der in üblicher Weise verschieblich auf dem ebenfalls als Schlitten ausgebildeten Druckzylinderbock gelagert ist, ist in üblicher und daher nicht näher beschriebener Weise eine Seite einer Rasterwalze 2 gelagert.In the inking unit 1, which can be moved in the usual way the pressure cylinder block, which is also designed as a slide is in the usual and therefore not described in detail Way one side of an anilox roller 2 stored.

An dem Farbwerksbock 1 sind um die Gelenkachsen 3, 4 die Parallellenker 5, 6 schwenkbar gelagert. Die oberen Enden der Parallellenker 5, 6 sind um die Gelenkachsen 7, 8 schwenkbar mit dem eine Koppel bildenden Träger 9 verbunden. Der Träger 9 ist einstückig mit dem Rakelträger 10 ausgebildet. Der Rakelträger 10 ist durch mit Handrädern 11 versehene Schrauben mit dem Rakelmesserträger 16 verbunden.On the inking unit 1 are the parallel links around the hinge axes 3, 4 5, 6 pivotally mounted. The upper ends of the parallel link 5, 6 are pivotable about the hinge axes 7, 8 with the a coupling-forming carrier 9 connected. The carrier 9 is in one piece formed with the doctor blade 10. The doctor blade carrier 10 is by screws provided with handwheels 11 with the doctor blade carrier 16 connected.

In der Gelenkachse 8 ist mit dem Träger 9 oder mit den oberen Enden der Parallellenker 6 die Kolbenstange 12 eines Pneumatikzylinders 13 gelenkig verbunden, der seinerseits über ein Tragstück 14 durch das Gelenk 15 an dem Farbwerksbock 1 angelenkt ist. In the hinge axis 8 is with the carrier 9 or with the upper Ends of the parallel link 6, the piston rod 12 of a pneumatic cylinder 13 articulated, which in turn via a support piece 14 articulated by the joint 15 on the inking unit 1 is.

Beim Anstellen der Rakelmesser an die Rasterwalze und beim Abrücken bleiben die Koppel 9 und der Rakelmesserträger 16 zu sich selbst parallel, weil die Parallellenker 5, 6 gleiche Längen aufweisen und bei ihrem Verschwenken ihre Parallelität beibehalten.When placing the doctor blade against the anilox roller and when moving away the coupling 9 and the doctor blade carrier 16 remain to themselves even parallel, because the parallel links 5, 6 have the same lengths and maintain their parallelism as they pivot.

Die Gelenkachsen 4 der Parallellenker 6 sind mit einer Exzenterverstellung 4' versehen, aufgrund derer sich die Schwenkachse des Parallellenkers 6 anheben und absenken läßt.The hinge axes 4 of the parallel link 6 are with an eccentric adjustment 4 'provided, due to which the pivot axis the parallel link 6 can be raised and lowered.

Die Parallellenker 5, 6 jedes der beiden die Rasterwalze 2 lagernden Farbwerkbox können zur Erhöhung der Stabilität doppelt ausgeführt sein.The parallel link 5, 6 each of the two anilox roller 2 storing Inking box can double to increase stability be executed.

Der Rakelmesserträger 16 besteht aus einer Profilleiste, dessen Profil aus Fig. 1 ersichtlich ist. Die Leiste des Rakelmesserträgers 16 ist mit einer den Farbinnenraum bildenden Rinne 20 versehen. In diese Rinne mündet im unteren mittleren Bereich, wie aus Fig. 3 ersichtlich ist, eine die Druckfarbe zuführende Bohrung 21. In den unteren Endbereichen ist die Rinne durch die die Druckfarbe abführenden Bohrungen 22, 23 angeschnitten. In die oberen Endbereiche der Rinne münden Entlüftungsbohrungen 24, 25.The doctor blade carrier 16 consists of a profile strip, the 1 can be seen. The bar of the doctor blade holder 16 is provided with a groove 20 forming the interior of the paint. This gutter opens out in the lower middle area Fig. 3 can be seen, a bore supplying the printing ink 21. In the lower end areas the channel is through the Bores 22, 23 which remove printing ink are cut. In the Vent holes 24, 25 open into the upper end regions of the channel.

Die Stirnseiten der Rinnenränder sind gegensinnig dachförmig abgeschrägt. Auf diesen Stirnflächen sind durch Klemmhalterungen 28, 29 die Rakelmesser 30, 31 in üblicher und daher nicht näher beschriebener Weise befestigt.The end faces of the gutter edges are chamfered in opposite directions. On these end faces are by clamps 28, 29 the doctor blade 30, 31 in the usual and therefore not closer attached described.

An den Seiten des Rakelmesserträgers 11 sind Dichtungen 33, 34 angeordnet, die den Farbinnenraum 20 gegenüber der Rasterwalze 2 abdichten. Zur Halterung dieser Dichtungen sind mit den seitlichen Stirnseiten der Leiste des Rakelmesserträgers Deckel 35, 36 verschraubt, die die endseitigen Stirnwände der Farbkammer 20 bilden. Seals 33, 34 are on the sides of the doctor blade carrier 11 arranged that the ink interior 20 opposite the anilox roller 2nd seal. To hold these seals are with the side End faces of the bar of the doctor blade carrier cover 35, 36 screwed, the end walls of the ink chamber 20th form.

Symmetrisch zur Mittelebene 40 des Rakelmesserträgers 16 ist der Deckel 35 mit einer Durchgangsbohrung und der Deckel 36 mit einer flachen Sacklochbohrung versehen. In den Bohrungen ist ein Rohr 41 gehaltert, das die Bohrung des Deckels 35 im wesentlichen durchsetzt. Das Rohr 41 ist in zwei Reihen beidseits der Mittelebene 40 des Rakelmesserträgers 16 mit Bohrungen 42 versehen, die Sprühdüsen bilden. Die Bohrungen 42 jeder Reihe schließen einen Zentrierwinkel von etwa 90° ein, so daß die durch diese gebildeten-Sprühdüsen etwa auf die Rückseiten der Rakelmesser 30, 31 gerichtet sind.The is symmetrical to the central plane 40 of the doctor blade carrier 16 Cover 35 with a through hole and cover 36 with a flat blind hole. There is a in the holes Pipe 41 held, the bore of the cover 35 substantially enforced. The tube 41 is in two rows on both sides of the The center plane 40 of the doctor blade carrier 16 is provided with bores 42, form the spray nozzles. The bores 42 of each row include a centering angle of approximately 90 °, so that the through these spray nozzles formed approximately on the back of the Doctor blades 30, 31 are directed.

Das Rohr 41 weist einen geeigneten Abstand von dem Boden der rinnenförmigen Ausnehmung auf, so daß Zwickelräume vermieden werden, aus denen sich Farbreste nur schwer entfernen lassen.The tube 41 has a suitable distance from the bottom of the trough-shaped Recess so that gusset spaces are avoided, from which paint residues are difficult to remove.

Die Farbkammer kann in der dargestellten Weise mit seitlichen Stegen 44, 45 versehen sein, die die Farbkammer in eine mittlere Hauptkammer und seitliche Nebenkammern 46, 47 unterteilen. Die Stege weisen entsprechend dem Radius der Rasterwalze 2 abgerundete Stirnkanten 48 auf, die mit der Rasterwalze 2 Drosselspalte 49 begrenzen. Die Stege 44, 45 sind mit Durchbrüchen versehen, so daß die Farbe von der Hauptkammer in die Nebenkammern 46, 47 gelangen kann.The ink chamber can in the manner shown with lateral Web 44, 45 may be provided which the ink chamber in a middle Divide the main chamber and side secondary chambers 46, 47. The Crosspieces have rounded edges corresponding to the radius of the anilox roller 2 Front edges 48 on, with the anilox roller 2 throttle gaps Limit 49. The webs 44, 45 are provided with openings, so that the paint from the main chamber into the secondary chambers 46, 47th can reach.

Die Nebenkammern abteilenden und Wehre bildenden Stege sind in der Patentanmeldung 195 16 223.4 beschrieben worden, auf die Bezug genommen wird.The dividing compartments and weirs are in the patent application 195 16 223.4 has been described, with reference is taken.

Auch die Stege 44, 45 sind symmetrisch zur Mittelebene 40 des Rakelmesserträgers 16 mit fluchtenden Bohrungen versehen, die das Rohr 41 durchsetzt. Die fluchtenden Bohrungen der beiden Stege 44, 45 können auch für sich allein zur Halterung des Sprühdüsenrohres 41 verwendet werden. The webs 44, 45 are symmetrical to the central plane 40 of the Doctor knife carrier 16 provided with aligned holes, the penetrates the tube 41. The aligned holes of the two webs 44, 45 can also be used alone to hold the spray nozzle tube 41 can be used.

Das Ausführungsbeispiel der Rakelvorrichtung nach den Fig. 4 bis 6 unterscheidet sich von dem nach den Fig. 1 bis 3 im wesentlichen nur dadurch, daß in die die Farbkammer bildende Ausnehmung 20 ein Einsatzteil 50 aus Kunststoff in der aus den Figuren ersichtlichen Weise eingelegt und befestigt ist, daß in der Mittelebene 40 des Rakelmesserträgers 16 mit einer die Oberseite des Einsatzteils anschneidenden Bohrung versehen ist, in die das Sprühdüsenrohr 41 eingelegt bzw. in der dieses gehalter ist. Das Einsatzteil 50 ist in den Endbereichen des Farbkammerinnenraums wiederum mit radialen Stegen 52, 53 versehen, die seitliche Nebenkammern abteilen. Auch diese Stege 52, 53 sind mit fluchtenden Bohrungen versehen, die das Sprühdüsenrohr 41 durchsetzt. Das Sprühdüsenrohr 41 ist in gleicher Weise wie das Sprühdüsenrohr nach den Fig. 1 bis 3 beidseits der Mittelebene 40 mit Sprühdüsen bildenden Bohrungen 42 versehen. Diese Bohrungen befinden sich bei sämtlichen Ausführungsbeispielen auch in den durch die Stege abgeteilten Nebenkammern.The embodiment of the doctor device according to FIGS. 4 to 6 differs from that according to FIGS. 1 to 3 essentially only in that in the recess forming the ink chamber 20 an insert part 50 made of plastic in the one shown in the figures Way inserted and fastened that in the central plane 40 of the doctor blade carrier 16 with a the top of the Insert-cutting hole is provided, in which the Spray nozzle tube 41 inserted or in which this is held. The Insert part 50 is in the end regions of the interior of the ink chamber again provided with radial webs 52, 53, the side secondary chambers compartment. These webs 52, 53 are also aligned Provide holes that pass through the spray nozzle tube 41. The spray nozzle tube 41 is in the same way as the spray nozzle tube 1 to 3 on both sides of the central plane 40 with Bores 42 forming spray nozzles. These holes are located in all the embodiments also in the secondary chambers separated by the webs.

Das Ausführungsbeispiel nach den Fig. 7 bis 9 unterscheidet sich von dem nach den Fig. 4 bis 6 dadurch, daß das Einsatz 60 aus Kunststoff nicht mit einem eingelegten Sprühdüsenrohr, sondern mit einer Bohrung 61 versehen ist, die, wie auch die Sprühdüsenrohre, parallel zur Achse der Rasterwalze 2 verläuft. Die Bohrung 61 ist beidseits der Mittelebene 40 wiederum mit Sprühdüsen bildenden Querbohrungen 62 versehen, die einen Zentrierwinkel von etwa 90° einschließen und auf die Rückseiten der Rakelmesser gerichtet sind.The embodiment of FIGS. 7 to 9 differs 4 to 6 in that the insert 60 from Plastic not with an inserted spray nozzle tube, but is provided with a bore 61 which, like the spray nozzle tubes, runs parallel to the axis of the anilox roller 2. The hole 61 is again on both sides of the central plane 40 with spray nozzles forming transverse bores 62 which have a centering angle of about 90 ° and on the back of the doctor blade are directed.

Das Einsatzteil 60 ist in der Mittelebene 40 mit einer längsverlaufenden Wulst 64 versehen, die einen Spalt mit der Rasterwalze 2 bildet und in bekannter Weise der Verhinderung von Geisterbildern dient. The insert 60 is in the central plane 40 with a longitudinal Bead 64 provided a gap with the anilox roller 2 forms and in a known manner the prevention of ghosting serves.

Auch das Einsatzteil 60 ist mit seitlichen Nebenkammern abteilenden Stegen 65, 66 versehen.The insert part 60 is also compartmentalized with side secondary chambers Provide webs 65, 66.

Die Bohrung 61 ist an ihrer aus Fig. 8 ersichtlichen rechten Seite durch das Deckelteil 36 verschlossen. Auf der linken Seite fluchtet die Bohrung 61 mit einer Bohrung 67 des Deckelteils 35.The bore 61 is on its right side, which can be seen in FIG. 8 closed by the cover part 36. On the left the bore 61 is aligned with a bore 67 of the cover part 35.

Die Bohrung 67 bzw. das Ende des Sprühdüsenrohres 41, das das Deckelteil 35 in einer Bohrung durchsetzt, ist mit einem Anschluß zum Zuführen einer Waschflüssigkeit versehen.The bore 67 or the end of the spray nozzle tube 41 that the Cover part 35 penetrates in a hole, is with a connection provided for supplying a washing liquid.

Während des Waschzyklus fließt die Waschflüssigkeit durch die Bohrungen 22, 23 in den Nebenkammern ab.During the washing cycle, the washing liquid flows through the Bores 22, 23 in the secondary chambers.

Die Art der Zuführung der Reinigungsflüssigkeit und der Kreislauf der Reinigungsflüssigkeit ist in der Patentanmeldung 195 16 456.3 beschrieben worden, auf die zur näheren Darstellung Bezug genommen wird.The type of supply of the cleaning liquid and the circuit the cleaning liquid is in patent application 195 16 456.3 has been described, to which reference is given for a more detailed description is taken.

In die einzelnen Sprühdüsen bildenden Bohrungen können zusätzlich auch besondere Sprühköpfe eingesetzt werden, die mit Einrichtungen versehen sind, die ein Eindringen von Farbe verhindern.Additional holes can be made in the individual spray nozzles also special spray heads are used with facilities are provided, which prevent the penetration of color.

Claims (10)

  1. Doctor-blade arrangement for a fountain-type inking unit of a rotary printing machine, comprising a doctor-blade carrier which is formed by a profiled bar with a channel-like recess and on which there are fastened in an approximately roof-like manner, and parallel to one another, two doctor blades which can be advanced up to an inking roller or engraved roller and which, together with the inking roller, the channel-like recess of the doctor-blade carrier and sealing means provided at the ends of the latter, bound an inking chamber, also comprising lines for feeding ink into the inking chamber and for discharging it therefrom, a spray device with spray nozzles for spraying a cleaning liquid in the inking chamber, and advancement devices for pressing the doctor-blade carrier onto the inking roller, characterized in that the end walls of the inking chamber, which bear the sealing means, are provided with bores in which there is retained a tube which is provided, in a spaced-apart arrangement over its length, with bores which form the spray nozzles, and in that one end of the tube is provided with a connection for feeding washing liquid.
  2. Doctor-blade arrangement according to Claim 1, characterized in that one bore is a blind bore which closes off the tube at the end.
  3. Doctor-blade arrangement according to Claim 1 or 2, characterized in that arranged in the inking chamber are two radial webs which separate off lateral secondary chambers, the end edges of the webs, along with the inking roller, bounding restrictor gaps and the webs being provided with aligned bores in which the tube, provided with transverse bores which form spray nozzles, is secured.
  4. Doctor-blade arrangement according to one or more of Claims 1 - 3, characterized in that the tube is additionally secured by an insert part which is inserted into the recess and is provided, in a spaced-apart arrangement over its length, with bores which form the spray nozzles, and in that one end of the tube is provided with a connection for feeding washing liquid.
  5. Doctor-blade arrangement according to Claim 4, characterized in that the insert part has two radial webs which separate off lateral secondary chambers, the end edges of the webs, along with the inking roller, bounding restrictor gaps and the webs being provided with aligned bores in which there is secured a tube which is provided, in a spaced-apart arrangement over its length, with bores which form the spray nozzles, and in that one end of the tube is provided with a connection for feeding washing liquid.
  6. Doctor-blade arrangement according to one or more of Claims 1 - 5, characterized in that, at least in certain areas, the tube is formed by a bore which is parallel to the axis of the inking roller and runs in the insert part, and the insert part is provided with transverse bores which form spray nozzles.
  7. Doctor-blade arrangement according to Claim 6, characterized in that the insert part is provided with two radial webs, of which the end edges, along with the inking roller, bound restrictor gaps.
  8. Doctor-blade arrangement according to Claim 6 or 7, characterized in that the insert part is provided with a bead which is parallel to the axis of the inking roller and, along with the inking roller, bounds a narrow gap.
  9. Doctor-blade arrangement according to one of Claims 1 to 8, characterized in that the bores are arranged in two mutually parallel rows and are directed essentially onto the doctor blades.
  10. Doctor-blade arrangement according to one of Claims 1 to 9, characterized in that the insert part consists of plastic.
EP96113148A 1995-09-28 1996-08-16 Doctor blade assembly for the inking device with circulation of ink in a rotary printing machine Expired - Lifetime EP0765749B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19536268 1995-09-28
DE19536268A DE19536268C1 (en) 1995-09-28 1995-09-28 Doctor device for a rinsing inking unit of a rotary printing machine

Publications (2)

Publication Number Publication Date
EP0765749A1 EP0765749A1 (en) 1997-04-02
EP0765749B1 true EP0765749B1 (en) 2000-04-26

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EP96113148A Expired - Lifetime EP0765749B1 (en) 1995-09-28 1996-08-16 Doctor blade assembly for the inking device with circulation of ink in a rotary printing machine

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US (1) US5735209A (en)
EP (1) EP0765749B1 (en)
JP (1) JPH09123413A (en)
KR (1) KR970015028A (en)
CN (1) CN1080199C (en)
AT (1) ATE192082T1 (en)
BR (1) BR9603914A (en)
CZ (1) CZ253596A3 (en)
DE (2) DE19536268C1 (en)
ES (1) ES2145957T3 (en)
IN (1) IN188210B (en)
TW (1) TW389725B (en)

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DE19848773C2 (en) * 1998-10-22 2002-11-28 Windmoeller & Hoelscher Device for placing and removing an ink chamber doctor blade on the anilox roller of a printing press
FR2793441B1 (en) * 1999-05-11 2001-08-03 Saint Eloi Mecanique Outil Sa DEVICE FOR INKING AN ANILOX OF A FLEXOGRAPHIC PRINTING MACHINE
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DE102008012552A1 (en) * 2008-03-04 2009-09-17 Windmöller & Hölscher Kg Ink chamber doctor blade on a printing machine
US8491452B2 (en) * 2009-08-28 2013-07-23 Xerox Corporation Pressure rolls, apparatuses useful in printing and methods of making pressure rolls
DE202009013643U1 (en) 2009-10-26 2011-03-17 Zeljko, Kitic sealing element
EP2773506A1 (en) * 2011-11-03 2014-09-10 Tetra Laval Holdings & Finance S.A. An apparatus for flexographic printing of a web of packaging material
CN103350570B (en) * 2013-06-14 2015-07-15 长兴宏峰纺织印染有限公司 Cleaning device for printing rotary screen automatic sizing agent scraping machine
DE102015005535A1 (en) * 2015-05-03 2016-11-03 Harris & Bruno Europe GmbH Cleaning device for a roller, printing or coating unit and method for cleaning a roller
CN108608731A (en) * 2016-04-11 2018-10-02 云和县东泽阀门有限公司 A kind of inking bucket retention mechanism
CN107791683A (en) * 2017-11-24 2018-03-13 株洲三新包装技术有限公司 A kind of doctor knife rest
FR3084013B1 (en) * 2018-07-18 2020-07-31 Bobst Lyon SQUEEGEE, SQUEEGEE CHAMBER AND PRINTER UNIT THUS EQUIPPED
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Also Published As

Publication number Publication date
ES2145957T3 (en) 2000-07-16
CN1151356A (en) 1997-06-11
BR9603914A (en) 1998-06-09
CZ253596A3 (en) 1997-04-16
IN188210B (en) 2002-08-31
ATE192082T1 (en) 2000-05-15
KR970015028A (en) 1997-04-28
TW389725B (en) 2000-05-11
JPH09123413A (en) 1997-05-13
US5735209A (en) 1998-04-07
DE19536268C1 (en) 1997-02-06
EP0765749A1 (en) 1997-04-02
CN1080199C (en) 2002-03-06
DE59605030D1 (en) 2000-05-31

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