EP0946367A1 - Method and device for inking a cylinder - Google Patents

Method and device for inking a cylinder

Info

Publication number
EP0946367A1
EP0946367A1 EP97954330A EP97954330A EP0946367A1 EP 0946367 A1 EP0946367 A1 EP 0946367A1 EP 97954330 A EP97954330 A EP 97954330A EP 97954330 A EP97954330 A EP 97954330A EP 0946367 A1 EP0946367 A1 EP 0946367A1
Authority
EP
European Patent Office
Prior art keywords
roller
ink
squeegee
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
EP97954330A
Other languages
German (de)
French (fr)
Other versions
EP0946367B1 (en
Inventor
Karl Robert SCHÄFER
Georg Schneider
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0946367A1 publication Critical patent/EP0946367A1/en
Application granted granted Critical
Publication of EP0946367B1 publication Critical patent/EP0946367B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/34—Means to agitate ink in a reservoir

Definitions

  • the invention relates to a device for inking and metering a roller of a rotary printing press according to the preamble of claim 1 and an associated device.
  • EP 06 63 293 A1 discloses a device for inking an anilox roller, in which printing ink rotates in a fully filled ink chamber with a circular cross section about a longitudinal axis running to the anilox roller.
  • a negative squeegee and a positive squeegee are provided.
  • the disadvantage of this device is that a preformed ink chamber is required, into which printing ink is pumped. This creates air bubbles, which lead to inking fluctuations on the roller. Furthermore, when the printing ink is fed into the ink chamber Druc, which runs parallel to the roller, differences arise which lead to sealing problems on the doctor blades and thus to different wear of the doctor blade and to fluctuations in inking on the roller. An uneven formation of the rotating paint roller in the ink chamber also leads to fluctuations in inking, caused on the one hand by the existing pressure differences and on the other hand by the friction of the paint roller on the outer surface of the ink chamber.
  • the invention has for its object to provide a method and an associated device for inking a roller of a rotary printing press with highly viscous printing ink.
  • the advantages that can be achieved with the invention are, in particular, that little printing ink is in circulation, which is advantageous when cleaning the ink fountain and changing the printing ink. Due to the lack of a specially shaped ink chamber, the rotating ink roller is undisturbed and even, which also leads to a uniform and intensive inking of the roller.
  • the ink application is carried out in a simple manner by means of an open ink fountain with at least one doctor blade positioned negatively on the roller. Both anilox rollers and inkjet cylinders can be provided with printing ink.
  • An ink fountain 1 open at the top has left and right side walls 2; 3 and two of the periphery 11 of a driven roller 4 adapted sealing end walls 6; 7.
  • the ink fountain 1 extends over the entire length of the roller 4, the z. B. can be designed as an anilox roller or as a printing cylinder, at the bottom of the side walls 2; 3, a working squeegee 8 negatively positioned on the roller 4 and a closing squeegee 9 are interchangeably attached.
  • the ink fountain 1 there is preferably highly viscous printing ink, which during the machine runs a color roller 12 which is movable in the horizontal direction A and rotates clockwise B. According to the direction of rotation of the roller 4, z. B. counterclockwise c, the ink roller 12 lies both on a part of the surface 11 of the roller 4 and on a work surface 13 of the doctor blade 8 and a ink roller 12 in productive direction C of the roller 4 delimiting guide surface 14.
  • the guide surface 14 is z. B. from the inside of the left side wall 2 is formed and extends to the working surface 13 of the squeegee 8 at an obtuse angle alpha, preferably from 110 ° to 130 °.
  • the angle alpha can also be designed as an obtuse angle of approximately 190 °.
  • the working surface 13 is formed by the free squeegee width and the length of the working squeegee 8.
  • the ink fountain 1 is between the 1st and 2nd or in the 1st or 2nd quadrant of a right-angled through the axis of rotation 17 of the roller 4
  • doctor blade 8 can cooperate with a side wall 2 depending on the amount of the angle alpha. If the angle alpha is in the range of 180 °, then the working surface 13 and the guide surface 14 are in the same plane and can therefore also be clearly executed.
  • the ink has a viscosity greater than 60 poise.

Landscapes

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

Abstract

The invention relates to a method for inking a cylinder (4) with highly viscous printing ink, in which an ink duct (1) that is open at the top is used with a doctor blade (8) that is fitted negatively on the cylinder (4). A reserve of printing ink is added to an ink duct (1), such that an inking roller (12) forms in simple manner during the functioning of the machine. A regular and intensive inking of the cylinder (4) results with only low ink circulation.

Description

Beschre i bungDescription
Verfahren und Einrichtung zum Einfärben einer WalzeProcess and device for inking a roller
Die Erfindung betrifft eine Einrichtung zum Einfärben und Dosieren einer Walze einer Rotationsdruckmaschine entsprechend dem Oberbegriff des Anspruches 1 sowie eine dazugehörige Einrichtung.The invention relates to a device for inking and metering a roller of a rotary printing press according to the preamble of claim 1 and an associated device.
Durch die EP 06 63 293 A1 ist eine Vorrichtung zur Einfärbung einer Rasterwalze bekannt, bei welcher in einer vollgefüllten Farbkammer mit kreisförmigen Querschnitt Druckfarbe um eine zur Rasterwalze verlaufenden Längsachse rotiert.EP 06 63 293 A1 discloses a device for inking an anilox roller, in which printing ink rotates in a fully filled ink chamber with a circular cross section about a longitudinal axis running to the anilox roller.
Es sind eine negativ angestellte Arbeitsrakel und eine positiv angestellte Schließrakel vorgesehen.A negative squeegee and a positive squeegee are provided.
Nachteilig bei dieser Vorrichtung ist, daß eine vorgeformte Farbkammer erforderlich ist, in welche Druckfarbe hineingepumpt wird. Dadurch entstehen Luftblasen, welche zu Ei nf ä rbungssc hwankungen an der Walze führen. Weiterhin entstehen beim Zuführen der Druckfarbe in die parallel zur Walze verlaufende Farbkammer Druc unterschiede, welche zu Abdichtungsproblemen an den Rakeln und somit zu unterschiedlichem Verschleiß der Rakel und zu Ei nfä rbungsschwankungen an der Walze führen. Ebenfalls zu Ei nf ärbungsschwankungen führt ein ungleichmäßiges Ausbilden der rotierenden Farbrolle in der Farbkammer, hervorgerufen einerseits durch die vorhandenen Druckuntersc iede und andererseits durch die Reibung der Farbrolle an der Mantelfläche der Farbkammer.The disadvantage of this device is that a preformed ink chamber is required, into which printing ink is pumped. This creates air bubbles, which lead to inking fluctuations on the roller. Furthermore, when the printing ink is fed into the ink chamber Druc, which runs parallel to the roller, differences arise which lead to sealing problems on the doctor blades and thus to different wear of the doctor blade and to fluctuations in inking on the roller. An uneven formation of the rotating paint roller in the ink chamber also leads to fluctuations in inking, caused on the one hand by the existing pressure differences and on the other hand by the friction of the paint roller on the outer surface of the ink chamber.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren sowie eine dazugehörige Einrichtung zum Einfärben einer Walze einer Rotationsdruckmaschine mit hochviskoser Druckfarbe zu schaffen.The invention has for its object to provide a method and an associated device for inking a roller of a rotary printing press with highly viscous printing ink.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst.This object is achieved by the features of claim 1.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß wenig Druckfarbe in Umlauf ist, was bei einer Reinigung des Farbkastens und Druckfarbenwechsel von Vorteil ist. Infolge Fehlens einer besonders geformten Farbkammer befindet sich die rotierende Farbrolle ungestört und gleichmäßig aus, was ebenfalls zu einer gleic mäßigen und intensiven Einfärbung der Walze führt. Der Farbauftrag wird in einfacher Weise mittels eines den Offenen Farbkastens mit mindestens einer negativ an die Walze angestellten Rakel ausgeführt. Es können sowohl Rasterwalzen als auch Ti ef druckzy l i nder mit Druckfarbe versehen werden.The advantages that can be achieved with the invention are, in particular, that little printing ink is in circulation, which is advantageous when cleaning the ink fountain and changing the printing ink. Due to the lack of a specially shaped ink chamber, the rotating ink roller is undisturbed and even, which also leads to a uniform and intensive inking of the roller. The ink application is carried out in a simple manner by means of an open ink fountain with at least one doctor blade positioned negatively on the roller. Both anilox rollers and inkjet cylinders can be provided with printing ink.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Die einzige Zeichnung zeigt einen Querschnitt durch eine schematische Darstellung eines auf einer Walze aufgesetzten Farbkastens mit zwei Rakeln.An embodiment of the invention is shown in the drawing and will be described in more detail below. The only drawing shows a cross section through a schematic representation of a ink fountain mounted on a roller with two doctor blades.
Ein oben offener Farbkasten 1 hat eine linke und eine rechte Seitenwand 2; 3 sowie zwei der Peripherie 11 einer angetriebenen Walze 4 angepaßte abdichtende Stirnwände 6; 7. Der Farbkasten 1 erstreckt sich über die gesamte Länge der Walze 4, die z. B. als Rasterwalze oder als Ti ef druckzy l i nde r ausgebildet sein kann, Unten an den Seitenwänden 2; 3 sind eine an die Walze 4 negativ angestellte Arbeitsrakel 8 sowie eine Schließrakel 9 auswechselbar angebracht.An ink fountain 1 open at the top has left and right side walls 2; 3 and two of the periphery 11 of a driven roller 4 adapted sealing end walls 6; 7. The ink fountain 1 extends over the entire length of the roller 4, the z. B. can be designed as an anilox roller or as a printing cylinder, at the bottom of the side walls 2; 3, a working squeegee 8 negatively positioned on the roller 4 and a closing squeegee 9 are interchangeably attached.
Statt Rakel 8; 9 könnten auch über die Länge der Walze 4 einzeln nebeneinander angeordnete Fa rbdos i ermesser eingesetzt we rden .Instead of squeegee 8; 9 could also be used along the length of the roller 4, individually arranged color sensors.
Im Farbkasten 1 befindet sich vorzugsweise hochviskose Druckfarbe, welche während des Maschi nen lauf es eine sich in horizontaler Richtung A bewegbare, im Uhrzeigersinn B rotierende Farbrolle 12 ausgebildet. Entsprechend der Drehrichtung der Walze 4, z. B. im Gegenuhrzeigersinn c, liegt die Farbrolle 12 sowohl auf einem Teil der Oberfläche 11 der Walze 4 als auch auf einer Arbeitsfläche 13 der Arbeitsrakel 8 sowie einer die Farbrolle 12 in Prdukt i ons r i chtung C der Walze 4 begrenzenden Leitfläche 14 an.In the ink fountain 1 there is preferably highly viscous printing ink, which during the machine runs a color roller 12 which is movable in the horizontal direction A and rotates clockwise B. According to the direction of rotation of the roller 4, z. B. counterclockwise c, the ink roller 12 lies both on a part of the surface 11 of the roller 4 and on a work surface 13 of the doctor blade 8 and a ink roller 12 in productive direction C of the roller 4 delimiting guide surface 14.
Die Leitfläche 14 wird z. B. von der Innenseite der linken Seitenwand 2 gebildet und verläuft zur Arbeitsfläche 13 der Arbeitsrakel 8 in einem stumpfen Winkel Alpha, vorzugsweise von 110° bis 130°.The guide surface 14 is z. B. from the inside of the left side wall 2 is formed and extends to the working surface 13 of the squeegee 8 at an obtuse angle alpha, preferably from 110 ° to 130 °.
Der Winkel Alpha kann auch als überstumpfer Winkel von etwa 190° ausgebildet sein.The angle alpha can also be designed as an obtuse angle of approximately 190 °.
Die Arbeitsfläche 13 wird von der freien Rakelbreite sowie der Länge der Arbeitsrakel 8 gebildet.The working surface 13 is formed by the free squeegee width and the length of the working squeegee 8.
Es ist auch möglich, die Walze 4 inIt is also possible to roll 4 in
Uhrze i gerdrehr i chtung laufen Zusammenfassung lassen, so daß die Rakel 9 zur Arbeitsrakel und die Rakel 8 zur Schließrakel wird und die Farbrolle 12 an der Rakel 9 sowie an der Innenfläche der rechten Seitenwand 3, einer Leitfläche 16 anliegt.Allow clockwise rotation to run so that squeegee 9 becomes working squeegee and squeegee 8 becomes closing squeegee and ink roller 12 rests on squeegee 9 and on the inner surface of right side wall 3, a guide surface 16.
Der Farbkasten 1 ist zwischen dem I. und II. oder im I. oder im II. Quadranten eines durch die Rotationsachse 17 der Walze 4 verlaufenden rechtwinkligenThe ink fountain 1 is between the 1st and 2nd or in the 1st or 2nd quadrant of a right-angled through the axis of rotation 17 of the roller 4
Koordinatensystems an der Peripherie 11 des Farbkastens 4 angeordnet .Coordinate system arranged on the periphery 11 of the ink fountain 4.
Nach einer anderen Aus f ührungsvar i ant e ist es möglich, je nach Drehrichtung der Walze 4, z. B. in Richtung C, nur eine Rakel, d. h. die negativ angestellte Arbeitsrakel 8 sowie zwei Stirnwände 6; 7 zu verwenden. Die Rakel 8 kann dabei je je nach Höhe des Betrages des Winkels alpha mit einer Seitenwand 2 zusammenwirken. Liegt der Winkel Alpha im Bereich von 180°, so befindet sich die Arbeitsfläche 13 sowie die Leitfläche 14 in derselben Ebene und können somit auch eindeutig ausgeführt werden.According to another embodiment, it is possible, depending on the direction of rotation of the roller 4, e.g. B. in the direction C, only one doctor blade, ie the negatively employed working doctor blade 8 and two end walls 6; 7 to use. The doctor blade 8 can cooperate with a side wall 2 depending on the amount of the angle alpha. If the angle alpha is in the range of 180 °, then the working surface 13 and the guide surface 14 are in the same plane and can therefore also be clearly executed.
Während des Maschi nen lauf es wird z. B. in den Farbkasten 1 soviel Druckfarbe eingegeben, daß sich eine Farbrolle 12 ausgebildet, welche mit einer Resultierenden ihres Gewichtes auf einem Teil der Oberfläche 11 der Walze 4 aufliegt und sowohl von der freien Arbeitsfläche 13 der Arbeitsrakel 8 als auch von der Leitfläche 13 begrenzt wi rd.During the Maschi nen run it is z. B. in the ink fountain 1 so much printing ink that a paint roller 12 is formed, which rests with a resultant of its weight on part of the surface 11 of the roller 4 and is limited both by the free working surface 13 of the doctor blade 8 and by the guide surface 13 becomes.
Die Druckfarbe weist eine Viskosität größer als 60 Poise auf . The ink has a viscosity greater than 60 poise.
BezugszeichenlisteReference list
1 Farbkasten1 color box
2 Seitenwand, linke (1)2 side wall, left (1)
3 Seitenwand, rechte (2)3 side wall, right (2)
4 Walze4 roller
55
6 St i rnwand (1 )6 walls (1)
7 St i rnwand (1 )7 wall (1)
8 Arbe i t s rake l8 Work rake l
9 Sc ließrakel 10 11 Peripherie, Oberfläche (4) 12 Farbrolle 13 Arbeits läche (8) 14 Leitfläche (2)9 Scraper blade 10 11 Periphery, surface (4) 12 Paint roller 13 Work surface (8) 14 Guide surface (2)
15 -15 -
16 Leitfläche (3)16 guide surface (3)
17 Rotationsachse (4)17 axis of rotation (4)
A Bewegungs ri chtung (12) B Drehrichtung (12) C D reh r i chtung (4)A Direction of movement (12) B Direction of rotation (12) C Direction of rotation (4)
I - IV Quadranten eines rechtwinkligen KoordinatensystemsI - IV quadrants of a right-angled coordinate system
Alpha Winkel (13, 14) Alpha Angle (13, 14)

Claims

An s p rü c h e Expectations
1. Verfahren zum Einfärben einer Walze (4) einer Rotationsdruckmaschine unter Verwendung eines drucklosen Farbkastens (1) mit einer negativ angestellten Arbeitsrakel (8) und einer positiv angestellten Schließrakel (9), dadurch gekennzeichnet, daß während des Maschi nen lauf es jeweils ein solcher Vorrat an hochviskoser Druckfarbe dem Farbkasten (1) zugeführt wird, daß eine rotierende Farbrolle (12) ausgebildet wird, die sich, ohne die Schließrakel (9) zu berühren, an der Arbeitsrakel (8) abwälzt.1. A method for inking a roller (4) of a rotary printing press using an unpressurized ink fountain (1) with a negative squeegee (8) and a positive squeegee (9), characterized in that each one runs during the machine Stock of highly viscous printing ink is fed to the ink fountain (1) in such a way that a rotating ink roller (12) is formed which rolls on the working doctor blade (8) without touching the closing doctor blade (9).
2. Einrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß an der Rakel (8 oder 9) eine die Farbrolle (12) links bzw. rechts begrenzende Leitfläche (14 oder 16) vorgesehen ist.2. Device for performing the method according to claim 1, characterized in that on the squeegee (8 or 9) a paint roller (12) left or right delimiting guide surface (14 or 16) is provided.
3. Einrichtung nach den Ansprüchen 1 bis 2, dadurch gekennzeichnet, daß zwischen einer freien Arbeitsfläche (13) der Arbeitsrakel (8) und der Leitfläche (14) zumindest ein stumpfer Winkel (Alpha) eingeschlossen i st .3. Device according to claims 1 to 2, characterized in that between a free working surface (13) of the doctor blade (8) and the guide surface (14) at least one obtuse angle (alpha) included i st.
4. Einrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß ein Farbkasten (1) aus den an die Walze (4) negativ und positiv angestellten Rakeln (8; 9) und zwei an die Peripherie der Walze (4) angepaßten Stirnwänden (6; 7) besteht. 4. Device according to claims 1 to 3, characterized in that an ink fountain (1) from the on the roller (4) negative and positive doctor blades (8; 9) and two on the periphery of the roller (4) adapted end walls ( 6; 7).
5. Einrichtung nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß der Farbkasten (1) auf der in Richtung Walze (4) gerichteten Seite eine Arbeitsrakel (8) und eine Schließrakel (9) aufweist.5. Device according to claims 1 to 4, characterized in that the ink fountain (1) on the side facing the roller (4) has a working squeegee (8) and a closing squeegee (9).
6. Einrichtung nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Leitflächen (8; 14 oder 9; 16) je nach Produkt ionsri chtung der Walze (4) im I. und II. Quadraten oder im II. oder nur im I. Quadranten bezogen auf ein rechtwinkliges Koordinatensystem mit seinem Ursprung auf der Rotationsachse (17) der Walze (4) vorgesehen sind. 6. Device according to claims 1 to 5, characterized in that the guide surfaces (8; 14 or 9; 16) depending on the product tion direction of the roller (4) in the 1st and 2nd squares or in the 2nd or only in the 1st Quadrants based on a right-angled coordinate system with its origin on the axis of rotation (17) of the roller (4) are provided.
EP97954330A 1996-12-21 1997-12-22 Method for inking a screen roller Expired - Lifetime EP0946367B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19653812 1996-12-21
DE19653812 1996-12-21
PCT/DE1997/002991 WO1998028140A1 (en) 1996-12-21 1997-12-22 Method and device for inking a cylinder

Publications (2)

Publication Number Publication Date
EP0946367A1 true EP0946367A1 (en) 1999-10-06
EP0946367B1 EP0946367B1 (en) 2001-01-24

Family

ID=7815875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97954330A Expired - Lifetime EP0946367B1 (en) 1996-12-21 1997-12-22 Method for inking a screen roller

Country Status (5)

Country Link
US (1) US6076462A (en)
EP (1) EP0946367B1 (en)
JP (1) JP3337225B2 (en)
DE (1) DE59702966D1 (en)
WO (1) WO1998028140A1 (en)

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DE19757897C1 (en) * 1997-12-24 1999-07-22 Koenig & Bauer Ag Arrangement for an inking unit of a rotary printing press
JP2005297201A (en) * 2004-04-06 2005-10-27 Taiyo Kikai Seisakusho:Kk Ink supply unit for flexographic press
DE102005019531A1 (en) * 2005-03-01 2006-09-07 Koenig & Bauer Ag Top-mounted ink vat for printing press drum has internal rollers driving motion of full-width wire loop
DE102005041187A1 (en) * 2005-08-31 2007-03-01 Koenig & Bauer Ag Roller e.g. screen roller, inking device for use in rotary printing press, has ink inlet arranged in front of operating doctor blades, where blades arranged before last blade includes several uniformly distributed ink outlets
DE102005041185B4 (en) * 2005-08-31 2014-03-27 Koenig & Bauer Aktiengesellschaft Apparatus for coloring a roller on a rotary printing machine
US20090035037A1 (en) * 2006-03-09 2009-02-05 Broch Allan R Doctor blade chamber for high viscous ink
DE102006025325A1 (en) * 2006-05-31 2007-12-06 Koenig & Bauer Aktiengesellschaft Inking system`s inking roller inking method for printing machine, involves detecting disturbances developed during transmission of ink to roller, and making activation of operating unit depending on disturbances in zones
DE102006029883A1 (en) * 2006-06-28 2008-01-03 Koenig & Bauer Aktiengesellschaft Roller inking device for rotary printing machine, has scraper case attached to operating scraper that is parallel to roller, and ink chamber provided for receiving printing ink, where chamber is provided in downstream to ink chamber
DE102006047594A1 (en) * 2006-10-09 2008-04-10 Heidelberger Druckmaschinen Ag Inking system for use in printing machine, has ink duct with negative wiper for wiping printing roller, and shaft arranged in ink duct, where shaft is arranged within printing ink roll and at distance to printer roller

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Title
See references of WO9828140A1 *

Also Published As

Publication number Publication date
JP2000516170A (en) 2000-12-05
DE59702966D1 (en) 2001-03-01
JP3337225B2 (en) 2002-10-21
US6076462A (en) 2000-06-20
EP0946367B1 (en) 2001-01-24
WO1998028140A1 (en) 1998-07-02

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