EP0428889A2 - Short inking unit with engraved roller - Google Patents

Short inking unit with engraved roller Download PDF

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Publication number
EP0428889A2
EP0428889A2 EP90120368A EP90120368A EP0428889A2 EP 0428889 A2 EP0428889 A2 EP 0428889A2 EP 90120368 A EP90120368 A EP 90120368A EP 90120368 A EP90120368 A EP 90120368A EP 0428889 A2 EP0428889 A2 EP 0428889A2
Authority
EP
European Patent Office
Prior art keywords
ink
inking unit
roller
short inking
doctor blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90120368A
Other languages
German (de)
French (fr)
Other versions
EP0428889A3 (en
EP0428889B1 (en
Inventor
Thomas John
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0428889A2 publication Critical patent/EP0428889A2/en
Publication of EP0428889A3 publication Critical patent/EP0428889A3/en
Application granted granted Critical
Publication of EP0428889B1 publication Critical patent/EP0428889B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F31/15—Devices for moving vibrator-rollers

Definitions

  • the present invention relates to a short inking unit for a rotary printing press with an anilox roller, an inking roller and a chamber doctor blade interacting with the anilox roller.
  • Such a short inking unit is known from DE-PS 31 17 341. It consists of an immersion roller immersed in an ink fountain, an application roller inking the printing form and an anilox roller which transfers the ink from the immersion roller to the application roller.
  • the doctor blade of a stripping device lies against the anilox roller.
  • the stripping device can optionally also be designed to oscillate in the axial direction for the purpose of suppressing doctor strips.
  • the known inking unit thus fulfills the function of producing a thin ink film, which is unique to each inking unit of rotary printing presses.
  • ink passes between the anilox roller and doctor blade, which leads to an ink build-up on the back of the doctor blade.
  • the amount of this color build-up depends on the rheology of the color.
  • the known inking unit disadvantageously has no device for preventing ink build-up.
  • a film inking unit which has an ink fountain with an ink knife.
  • a thin film strip is attached to the underside of the ink knife, which should prevent the ink from settling and dripping off and to feed the small amount of ink running off the ink knife back onto the ink film on the ink fountain roller.
  • this arrangement is limited to inking units with a rotating ink knife.
  • the object of the invention is a short inking unit with anilox roller to be specified, in which no paint builds up on the back of the doctor device even when the doctor knife runs in opposite directions.
  • This task is solved by a short inking unit with anilox roller, in which the anilox roller is displaceable in the axial direction.
  • Fig. 1 shows a schematic representation of a short inking unit with an anilox roller.
  • This short inking unit has an anilox roller 1, an inking roller 2, an ink trough 3, a chamber doctor 4 interacting with the anilox roller 1 with an opposing doctor blade 5 and a central drive 6 for the ink pump 7, which pumps the ink from the ink trough 3 to the chamber doctor 4 .
  • Fig. 2 shows a simplified partial sectional view of the storage and the drive of the oscillating anilox roller of an inking unit according to the invention.
  • the anilox roller 1 is connected via a half-shell coupling 8 or 9 to a drive shaft 10 and a stub shaft 13.
  • the drive shaft 10 is rotatably supported in a shaft bearing 11 in one side wall 12 of the inking unit, and the shaft end 13 is rotatably mounted in a shaft bearing 14 in the other side wall 15 of the inking unit.
  • the drive shaft 10 extends through the bearing 11 and carries, on the side of the bearing 11 facing away from the half-shell coupling 8, a coaxially and firmly attached drive wheel 16 for the anilox roller 1 and also a traversing device 17 which is also arranged coaxially.
  • the traversing device 17 essentially has a housing 18 and a wheel 19 rotatably mounted in the interior of the housing 18.
  • the wheel 19 runs in a groove 20 formed in the drive shaft 10.
  • the groove 20 is formed on the surface of the drive shaft 10 in such a way that it is essentially designed such that it runs essentially in a plane which is not perpendicular to the axis of the drive shaft 10 .
  • the present invention has the further advantage of an easily executable structure.
  • an ink supply device which has a plurality of chamber doctor blades arranged and arranged side by side
  • letting the doctor blade blades traverse requires a very high technical outlay, in particular also because at least the chamber doctor blade has to be moved.
  • the traversing of the anilox roller, which is mounted so that it can be moved back and forth in the axial direction in fixed bearings is technically simple. 1 would not only have to move the chamber doctor, but also the ink pan with the pump and the central drive.

Landscapes

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

Abstract

A short inking unit is known which has a dipping roller which dips into an ink fountain, an application roller which inks the printing forme, and a screen roller which transfers the ink from the dipping roller to the application roller. In this short inking unit, the doctor blade of a scraper device rests against the screen roller. For the purpose of avoiding scraper smears, the scraper device can also be constructed to alternate in the axial direction. The disadvantage is that in this known inking unit ink passes between the screen roller and the doctor blade when the ink is scraped off, which leads to an accumulation of ink on the rear side of the doctor blade. It is a disadvantage that the known inking unit has no device for preventing the accumulation of ink. The short inking unit according to the invention is a short inking unit with a screen roller which is displaceable in the axial direction. In this manner, ink is prevented from accumulating on the rear side of the doctor blade device, even in the case of alternating doctor blades. The invention can be used in all short inking units with a screen roller. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Kurzfarbwerk für eine Rotationsdruckmaschine mit einer Rasterwalze, einer Farbauftragwalze und einer mit der Rasterwalze zusammenwirkenden Kammerrakel.The present invention relates to a short inking unit for a rotary printing press with an anilox roller, an inking roller and a chamber doctor blade interacting with the anilox roller.

Ein derartiges Kurzfarbwerk ist aus der DE-PS 31 17 341 bekannt. Es besteht aus einer in einen Farbkasten eintauchenden Tauchwalze, einer die Druckform einfärbenden Auftragwalze und einer die Farbe von der Tauchwalze auf die Auftragwalze übertragenden Rasterwalze. An der Rasterwalze liegt das Rakelblatt einer Abstreifvorrichtung an. Die Abstreifvorrichtung kann wahlweise zwecks Unterdrückung von Rakelstreifen auch in Achsrichtung changierend ausgebildet werden.Such a short inking unit is known from DE-PS 31 17 341. It consists of an immersion roller immersed in an ink fountain, an application roller inking the printing form and an anilox roller which transfers the ink from the immersion roller to the application roller. The doctor blade of a stripping device lies against the anilox roller. The stripping device can optionally also be designed to oscillate in the axial direction for the purpose of suppressing doctor strips.

Das bekannte Farbwerk erfüllt so die einem jeden Farbwerk von Rotationsdruckmaschinen eigentümliche Funktion der Erzeugung eines dünnen Farbfilms. Jedoch tritt beim Abrakeln der Farbe zwischen Rasterwalze und Rakelmesser Farbe hindurch, was auf der Rückseite des Rakelmessers zu einem Farbaufbau führt. Die Menge dieses Farbaufbaus hängt von der Rheologie der Farbe ab. Während des Druckvorgangs tropft die Farbe ab oder wird unkontrolliert mitgerissen und verursacht so zum Beispiel Farbspritzer. Das bekannte Farbwerk weist nachteiligerweise keine Vorrichtung zum Verhindern des Farbaufbaus auf.The known inking unit thus fulfills the function of producing a thin ink film, which is unique to each inking unit of rotary printing presses. However, when the ink is doctored off, ink passes between the anilox roller and doctor blade, which leads to an ink build-up on the back of the doctor blade. The amount of this color build-up depends on the rheology of the color. During the printing process, the ink drips or is carried away in an uncontrolled manner, causing color splashes, for example. The known inking unit disadvantageously has no device for preventing ink build-up.

Aus der DE-OS 28 51 606 ist ein Filmfarbwerk bekannt, das einen Farbkasten mit einem Farbmesser aufweist. An der Unterseite des Farbmessers ist ein dünner Folienstreifen befestigt, der ein Absetzen und Abtropfen der Farbe verhindern und die am Farbmesser ablaufende geringe Farbmenge dem Farbfilm auf der Farbkastenwalze wieder zuführen soll. Diese Anordnung ist jedoch auf Farbwerke mit mitläufigem Farbmesser beschränkt.From DE-OS 28 51 606 a film inking unit is known which has an ink fountain with an ink knife. A thin film strip is attached to the underside of the ink knife, which should prevent the ink from settling and dripping off and to feed the small amount of ink running off the ink knife back onto the ink film on the ink fountain roller. However, this arrangement is limited to inking units with a rotating ink knife.

Aufgabe der Erfindung ist es, ein Kurzfarbwerk mit Rasterwalze anzugeben, bei dem sich auf der Rückseite der Rakeleinrichtung auch bei gegenläufigem Rakelmesser kein Farbauftrag aufbaut.The object of the invention is a short inking unit with anilox roller to be specified, in which no paint builds up on the back of the doctor device even when the doctor knife runs in opposite directions.

Diese Aufgabe wird durch ein Kurzfarbwerk mit Rasterwalze gelöst, bei dem die Rasterwalze in axialer Richtung verschiebbar ist.This task is solved by a short inking unit with anilox roller, in which the anilox roller is displaceable in the axial direction.

Weitere Merkmale und Zweckmäßigkkeiten der Erfindung ergaben sich aus der Beschreibung eines Ausführungsbeispiels anhand der Figuren. Von den Figuren zeigen:

  • Fig. 1 eine schematische Darstellung eines Kurzfarbwerks mit zylindergroßer Farbauftragwalze; und
  • Fig. 2 eine Schnittansicht der Lagerung und des Antriebs der Rasterwalze eines erfindungsgemäßen Farbwerks.
Further features and expediencies of the invention resulted from the description of an embodiment with reference to the figures. From the figures show:
  • Figure 1 is a schematic representation of a short inking unit with a cylinder-sized inking roller. and
  • Fig. 2 is a sectional view of the storage and drive of the anilox roller of an inking unit according to the invention.

Fig. 1 zeigt eine schematische Darstellung eines Kurzfarbwerks mit einer Rasterwalze. Dieses Kurzfarbwerk weist eine Rasterwalze 1, eine Farbauftragwalze 2, eine Farbwanne 3, eine mit der Rasterwalze 1 zusammenwirkende Kammerrakel 4 mit einem gegenläufigen Rakelmesser 5 und einen Zentralantrieb 6 für die Farbpumpe 7, die die Farbe aus der Farbwanne 3 zur Kammerrakel 4 pumpt, auf.Fig. 1 shows a schematic representation of a short inking unit with an anilox roller. This short inking unit has an anilox roller 1, an inking roller 2, an ink trough 3, a chamber doctor 4 interacting with the anilox roller 1 with an opposing doctor blade 5 and a central drive 6 for the ink pump 7, which pumps the ink from the ink trough 3 to the chamber doctor 4 .

Fig. 2 zeigt in einer vereinfachten teilweisen Schnittansicht die Lagerung und den Antrieb der changierenden Rasterwalze eines erfindungsgemäßen Farbwerks. Die Rasterwalze 1 ist über je eine Halbschalenkupplung 8 bzw. 9 mit einer Antriebswelle 10 und einem Wellenstummel 13 verbunden. Die Antriebswelle, 10 ist in einem Wellenlager 11 in der einen Seitenwand 12 des Farbwerks drehbar gelagert, und der Wellenstummel 13 ist in einem Wellenlager 14 in der anderen Seitenwand 15 des Farbwerks drehbar gelagert. Die Antriebswelle 10 erstreckt sich durch das Lager 11 hindurch und trägt auf der der Halbschalenkupplung 8 abgewandten Seite des Lagers 11 ein koaxial und fest angebrachtes Antriebsrad 16 für die Rasterwalze 1 sowie eine ebenfalls koaxial angebrachte Changiervorrichtung 17.Fig. 2 shows a simplified partial sectional view of the storage and the drive of the oscillating anilox roller of an inking unit according to the invention. The anilox roller 1 is connected via a half-shell coupling 8 or 9 to a drive shaft 10 and a stub shaft 13. The drive shaft 10 is rotatably supported in a shaft bearing 11 in one side wall 12 of the inking unit, and the shaft end 13 is rotatably mounted in a shaft bearing 14 in the other side wall 15 of the inking unit. The drive shaft 10 extends through the bearing 11 and carries, on the side of the bearing 11 facing away from the half-shell coupling 8, a coaxially and firmly attached drive wheel 16 for the anilox roller 1 and also a traversing device 17 which is also arranged coaxially.

Die Changiervorrichtung 17 weist im wesentlichen ein Gehäuse 18 und ein im Inneren des Gehäuses 18 drehbar angebrachtes Rad 19 auf. Das Rad 19 läuft in einer in der Antriebswelle 10 gebildeten Nut 20. Die Nut 20 ist auf der Oberfläche der Antriebswelle 10 so ausgebildet, daß sie im wesentlichen so ausgebildet, daß sie im wesentlichen in einer zur Achse der Antriebswelle 10 nicht senkrecht liegenden Ebene verläuft.The traversing device 17 essentially has a housing 18 and a wheel 19 rotatably mounted in the interior of the housing 18. The wheel 19 runs in a groove 20 formed in the drive shaft 10. The groove 20 is formed on the surface of the drive shaft 10 in such a way that it is essentially designed such that it runs essentially in a plane which is not perpendicular to the axis of the drive shaft 10 .

Die vorliegende Erfindung weist den weiteren Vorteil eines einfach ausführbaren Aufbaus auf. Bei einer Farbzuführvorrichtung, die mehrere nebeneinander angeordnete an- und abstellbare Kammerrakel aufweist, erfordert das Changierenlassen der Rakelmesser einen sehr hohen technischen Aufwand, insbesondere auch deshalb, weil zumindest die Kammerrakel bewegt werden müssen. Das Changieren der in fest angebrachten Lagern in axialer Richtung hin- und hergehend verschiebbar angebrachten Rasterwalze ist dagegen technisch einfach ausführbar. Auch müßten bei Verwendung einer Kammerrakel gemäß Fig. 1 nicht nur die Kammerrakel, sondern auch die Farbwanne mit der Pumpe und der Zentralantrieb changierend bewegt werden.The present invention has the further advantage of an easily executable structure. In the case of an ink supply device which has a plurality of chamber doctor blades arranged and arranged side by side, letting the doctor blade blades traverse requires a very high technical outlay, in particular also because at least the chamber doctor blade has to be moved. On the other hand, the traversing of the anilox roller, which is mounted so that it can be moved back and forth in the axial direction in fixed bearings, is technically simple. 1 would not only have to move the chamber doctor, but also the ink pan with the pump and the central drive.

Claims (1)

Kurzfarbwerk mit einer Rasterwalze für eine Rotationsdruckmaschine mit einer Rasterwalze (1), einer Farbauftragwalze (2) und einer mit der Rasterwalze (1) zusammenwirkenden Kammerrakel (4), dadurch gekennzeichnet, daß die Rasterwalze (1) in axialer Richtung hin- und hergehend verschiebbar ist.Short inking unit with an anilox roller for a rotary printing machine with an anilox roller (1), an inking roller (2) and a chamber doctor blade (4) interacting with the anilox roller (1), characterized in that the anilox roller (1) can be moved back and forth in the axial direction is.
EP90120368A 1989-11-18 1990-10-24 Short inking unit with engraved roller Expired - Lifetime EP0428889B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8913655U 1989-11-18
DE8913655U DE8913655U1 (en) 1989-11-18 1989-11-18 Short inking unit with one anilox roller

Publications (3)

Publication Number Publication Date
EP0428889A2 true EP0428889A2 (en) 1991-05-29
EP0428889A3 EP0428889A3 (en) 1991-08-28
EP0428889B1 EP0428889B1 (en) 1994-08-17

Family

ID=6844717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120368A Expired - Lifetime EP0428889B1 (en) 1989-11-18 1990-10-24 Short inking unit with engraved roller

Country Status (3)

Country Link
EP (1) EP0428889B1 (en)
JP (1) JPH03169632A (en)
DE (2) DE8913655U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002729A2 (en) * 1998-07-03 2000-01-20 Koenig & Bauer Ag Short inking mechanism for rotary presses

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005031569B4 (en) * 2004-08-04 2016-07-28 Heidelberger Druckmaschinen Ag press
US7398731B2 (en) * 2004-08-04 2008-07-15 Heidelberger Druckmaschinen Ag Press containing an oscillating doctor and oscillating roller moved together
DE102005061915A1 (en) * 2005-12-23 2007-07-05 Koenig & Bauer Aktiengesellschaft Method for operating a short inking system used in a printing machine comprises moving a grid roller according to a twist of the grid roller and contacting a tensioning channel of an ink application roller with the grid roller
DE102006004568A1 (en) * 2006-02-01 2007-08-02 Koenig & Bauer Aktiengesellschaft Short inking unit for print machine has leveling roller located between spot where ink is admitted and contact gap between screen roller and ink application roller in relation to turning direction of screen roller
DE102008015531A1 (en) 2008-03-25 2009-10-01 Koenig & Bauer Aktiengesellschaft Short inking device for rotary printing press, has ink roller arranged to squeegee device removing profile of remaining inks in direction of rotation provided after contact point to form roller

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5962152A (en) * 1982-09-30 1984-04-09 Osaka Yomiuri Shinbunsha:Kk Ink supplier for rotary press printer
JPH01206050A (en) * 1988-02-12 1989-08-18 Isowa Ind Co Printing press in corrugated sheet folding case machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE312050C (en) *
DE3442662A1 (en) * 1984-11-23 1986-06-05 Albert-Frankenthal Ag, 6710 Frankenthal INK
DE3638826A1 (en) * 1986-11-13 1988-05-26 Roland Man Druckmasch STORAGE FOR CHANGING APPLICATION ROLLERS OF PRINTING MACHINES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5962152A (en) * 1982-09-30 1984-04-09 Osaka Yomiuri Shinbunsha:Kk Ink supplier for rotary press printer
JPH01206050A (en) * 1988-02-12 1989-08-18 Isowa Ind Co Printing press in corrugated sheet folding case machine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 522 (E-849)(3870) 21. November 1989 & JP-A-1 206 050 (ISOWA IND CO ) 18. August 1989 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 166 (M-314)(1603) 2. August 1984 & JP-A-59 62 152 (OOSAKA YOMIURI SHINBUNSHIYA K.K. ) 9. April 1984 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002729A2 (en) * 1998-07-03 2000-01-20 Koenig & Bauer Ag Short inking mechanism for rotary presses
WO2000002729A3 (en) * 1998-07-03 2000-05-04 Koenig & Bauer Ag Short inking mechanism for rotary presses

Also Published As

Publication number Publication date
DE59006832D1 (en) 1994-09-22
EP0428889A3 (en) 1991-08-28
DE8913655U1 (en) 1989-12-28
EP0428889B1 (en) 1994-08-17
JPH03169632A (en) 1991-07-23

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