EP0453910B1 - Ink rail device - Google Patents

Ink rail device Download PDF

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Publication number
EP0453910B1
EP0453910B1 EP91105899A EP91105899A EP0453910B1 EP 0453910 B1 EP0453910 B1 EP 0453910B1 EP 91105899 A EP91105899 A EP 91105899A EP 91105899 A EP91105899 A EP 91105899A EP 0453910 B1 EP0453910 B1 EP 0453910B1
Authority
EP
European Patent Office
Prior art keywords
doctor blade
chamber
ink
inking unit
unit 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
EP91105899A
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German (de)
French (fr)
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EP0453910A1 (en
Inventor
Wolfgang Otto Reder
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
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Koenig and Bauer Albert AG
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Publication date
Application filed by Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0453910A1 publication Critical patent/EP0453910A1/en
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Anticipated expiration legal-status Critical
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F9/00Rotary intaglio printing presses
    • B41F9/06Details
    • B41F9/061Inking devices
    • B41F9/065Using inking rails
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F31/00Inking arrangements or devices
    • B41F31/02Ducts, containers, supply or metering devices
    • B41F31/027Ink rail devices for inking ink rollers

Definitions

  • the invention relates to an inking unit for a web-fed rotary printing press according to the preamble of claim 1.
  • a generic inking unit is known from DE-OS 38 00 411.
  • a closing doctor blade is provided which has at least one overflow opening, by means of which an ink chamber is connected to an additional pre-chamber.
  • an overpressure prevailing in the ink chamber is reduced.
  • the overflowing paint is returned to a pump, so that a color cycle results.
  • EP-A-03 59 955 shows a chambered doctor blade with two doctor blades.
  • a web is provided within the chambered doctor blade, which starts from an upper side and extends over the entire width of the chambered doctor blade and leaves a narrow passage slot open above the underside.
  • a chambered doctor blade with two doctor blades, which has an ink chamber with an upstream distributor chamber, is known from DE-A-37 04 433.
  • EP-A-03 50 839 shows a chambered doctor blade with additional doctor blades between the working and closing doctor blades.
  • GB-PS 15 90 928 shows a chambered doctor blade with two thin elastic doctor blades, which automatically seal the doctor chamber as soon as the doctor blades come out of contact with a surface to be inked.
  • the invention has for its object to provide a chamber doctor blade on an anilox roller of an inking unit, which compensates for pressure fluctuations in the ink chamber.
  • the cells of an anilox roller are advantageously made by the subject matter of the invention evenly filled with paint. Pressure fluctuations in the ink chamber have been reduced and unwanted air bubbles which impair good filling of the cells with paint are minimized.
  • an overflow opening is provided, which is caused by the respective overpressure, e.g. B. by a change in viscosity of the color or speed change of the anilox roller, in the ink chamber automatically adjusts and degrades this proportionally.
  • This also ensures that the pressure reduction takes place evenly over the entire length of the ink chamber, so that, for. B. an uneven ink application in the form of visible longitudinal stripes on the printed product is avoided.
  • an ink supply to the ink chamber is provided in the form of an ink supply slot which extends continuously over the entire width of the ink chamber.
  • the chambered doctor blade housing is advantageously divided in two in the longitudinal direction, as a result of which the feed slot is produced in a structurally simple manner.
  • the figure shows a schematic representation of the chambered doctor blade according to the invention in section.
  • the inking unit of a rotary printing press has a chambered doctor blade arrangement 3, which is positioned from below on an anilox roller 2.
  • the chambered doctor blade arrangement 3 consists of a doctor blade holder 4, 6 divided in the axial direction and two doctor blades 7, 8 arranged offset in the circumferential direction of the anilox roller 2 the anilox roller 2 is immersed.
  • a plurality of chamber doctor blade arrangements 3 arranged next to one another can be provided over the length of the anilox roller 2. The use of a plurality of chamber doctor blade arrangements 3 arranged next to one another simplifies handling and enables the ink supply of the anilox roller 2 to be shut down zone by zone.
  • the doctor blade 7, also referred to below as the working doctor, and the doctor blade 8, also referred to below as the closing doctor, are each made at an angle ⁇ , ⁇ ( ⁇ ; ⁇ > 90 O ) under slight pressure on the anilox roller 2.
  • the doctor blades 7, 8 are fraught with play in an axially extending groove 11; 12 arranged in the doctor holder 4, 6.
  • the doctor blades 7, 8 characterized by this ratio of free bending length L to thickness D (L / D /400) are therefore extremely flexible.
  • a pressure increase in the ink chamber 9 is, for. B. caused by a change in the viscosity of the ink or by an increase in the speed of the anilox roller 2 or by the formation of air bubbles in the ink chamber 9.
  • these pressure fluctuations cause filling disorders of the cups 23 of the anilox roller 2 and thus lead to a loss in quality in the color distribution.
  • This pressure increase in the ink chamber 9 leads to the fact that it is pressed more strongly onto the anilox roller 2 in proportion to the pressure increase. This reaction ensures that only ink is removed from the ink chamber 9, which is located in the cups 23 of the anilox roller 2. If the pressure in the ink chamber 9 is reduced, the contact force of the working squeegee 7 on the anilox roller 2 decreases again and thus protects the squeegee sheet 7 and the webs 24 of the anilox roller 2, thereby increasing their service life.
  • the closing squeegee 8 is bent by the anilox roller 2 when the pressure in the ink chamber 9 increases, so that a small gap s (z. B. 0 ⁇ s ⁇ 0.5 mm) between the doctor blade edge and the anilox roller 2 is formed.
  • This measure ensures that more or at least as much ink can flow out of the ink chamber 9 through the gap s as is supplied to the ink of the ink chamber 9 partly by an ink supply 13, partly by residual ink remaining in the cups 23 of the anilox roller 2 becomes.
  • the doctor blade 8 acts as a kind of pressure relief valve evenly over the entire length of the ink chamber 9.
  • the excess ink is collected by an ink fountain 14 arranged below the squeegee holders 4, 6 and fed back to the ink chamber 9 by means of a pump (not shown), so that an ink cycle is created.
  • the closing squeegee 8 springs back in accordance with the ink pressure and presses against the anilox roller 2 with slight pretension.
  • the pretensioning of the doctor blades 7, 8 is achieved by moving the doctor holder 4, 6 against an adjustable stop 16 arranged on the frame by means of suitable adjusting means (e.g. acting mechanically; electromechanically; pneumatically or hydraulically).
  • suitable adjusting means e.g. acting mechanically; electromechanically; pneumatically or hydraulically.
  • the doctor blade holder 4, 6 has a laterally projecting base plate 17 which can be brought into contact with the stop 16.
  • a distribution chamber 19 designed as an ink storage space is provided, which is connected to at least one ink supply connection 13.
  • the squeegee holder 4, 6 is designed as a squeegee holder 4, 6 which is longitudinally divided into two parts. These are Detachably connected to one another and by means of an inclined underside 21 of the angled doctor blade holder 4 and an inclined top side 22 of the doctor blade holder 6 form a triangular distribution chamber 19. Here, however, the underside 21 and top side 22 do not touch, so that the ink supply slot 18 is formed.

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

Description

Die Erfindung betrifft ein Farbwerk für eine Rollenrotationsdruckmaschine gemäß dem Oberbegriff des Anspruches 1.The invention relates to an inking unit for a web-fed rotary printing press according to the preamble of claim 1.

Ein gattungsgemäßes Farbwerk ist durch die DE-OS 38 00 411 bekannt. Bei diesem Farbwerk ist ein Schließrakelblatt vorgesehen, welches wenigstens eine Überströmöffnung aufweist, mittels der eine Farbkammer mit einer zusätzlichen Vorkammer verbunden ist. Durch diese Maßnahme wird ein in der Farbkammer herrschender Überdruck abgebaut. Die überströmende Farbe wird zu einer Pumpe zurückgeleitet, so daß sich ein Farbkreislauf ergibt.A generic inking unit is known from DE-OS 38 00 411. In this inking unit a closing doctor blade is provided which has at least one overflow opening, by means of which an ink chamber is connected to an additional pre-chamber. As a result of this measure, an overpressure prevailing in the ink chamber is reduced. The overflowing paint is returned to a pump, so that a color cycle results.

Aus der EP-A-03 59 955 ist eine Kammerrakel mit zwei Rakelblättern zu entnehmen. Innerhalb der Kammerrakel ist ein Steg vorgesehen, der von einer Oberseite ausgeht und sich über die gesamte Breite der Kammerrakel erstreckt und über der Unterseite einen schmalen Durchtrittsschlitz offen läßt.EP-A-03 59 955 shows a chambered doctor blade with two doctor blades. A web is provided within the chambered doctor blade, which starts from an upper side and extends over the entire width of the chambered doctor blade and leaves a narrow passage slot open above the underside.

Eine Kammerrakel mit zwei Rakelblättern, die eine Farbkammer mit vorgeschaltete Verteilerkammer aufweist, ist aus der DE-A-37 04 433 bekannt.A chambered doctor blade with two doctor blades, which has an ink chamber with an upstream distributor chamber, is known from DE-A-37 04 433.

Eine Kammerrakel mit zwischen Arbeits- und Schließrakelblättern zusätzlichen Rakelblättern zeigt die EP-A-03 50 839.EP-A-03 50 839 shows a chambered doctor blade with additional doctor blades between the working and closing doctor blades.

Die GB-PS 15 90 928 zeigt eine Kammerrakel mit zwei dünnen elastischen Rakelblättern, welche die Rakelkammer selbsttätig abdichten, sobald die Rakelblätter außer Berührung mit einer einzufärbenden Fläche kommen.GB-PS 15 90 928 shows a chambered doctor blade with two thin elastic doctor blades, which automatically seal the doctor chamber as soon as the doctor blades come out of contact with a surface to be inked.

Der Erfindung liegt die Aufgabe zugrunde, ein Kammerrakel an einer Rasterwalze eines Farbwerkes vorzusehen, welches Druckschwankungen in der Farbkammer ausgleicht.The invention has for its object to provide a chamber doctor blade on an anilox roller of an inking unit, which compensates for pressure fluctuations in the ink chamber.

Die Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst.The object is achieved by the characterizing part of claim 1.

In vorteilhafter Weise werden durch den Erfindungsgegenstand die Näpfchen einer Rasterwalze gleichmäßig mit Farbe gefüllt. Druckschwankungen in der Farbkammer wurden abgebaut und eine unerwünschte Luftbläschenbildung, die eine gute Füllung der Näpfchen mit Farbe beeinträchtigt, wird minimiert.The cells of an anilox roller are advantageously made by the subject matter of the invention evenly filled with paint. Pressure fluctuations in the ink chamber have been reduced and unwanted air bubbles which impair good filling of the cells with paint are minimized.

In vorteilhafter Weise ist eine Überströmöffnung vorgesehen, die sich dem jeweiligen Überdruck, hervorgerufen z. B. durch eine Viskositätsänderung der Farbe oder Drehzahländerung der Rasterwalze, in der Farbkammer selbständig anpaßt und diesen proportional abbaut. Hierbei wird gleichzeitig sichergestellt, daß der Druckabbau über die gesamte Farbkammerlänge gleichmäßig erfolgt, so daß z. B. ein ungleichmäßiger Farbauftrag in Form von sichtbaren Längsstreifen auf dem Druckprodukt vermieden wird.Advantageously, an overflow opening is provided, which is caused by the respective overpressure, e.g. B. by a change in viscosity of the color or speed change of the anilox roller, in the ink chamber automatically adjusts and degrades this proportionally. This also ensures that the pressure reduction takes place evenly over the entire length of the ink chamber, so that, for. B. an uneven ink application in the form of visible longitudinal stripes on the printed product is avoided.

In weiterer vorteilhafter Ausbildung des Erfindungsgegenstandes ist eine Farbzufuhr zur Farbkammer in Form eines Farbzufuhrschlitzes vorgesehen, der sich durchgehend über die gesamte Farbkammerbreite erstreckt. Durch diese Maßnahme werden auch die an den Randbereichen der Rasterwalze angeordneten Näpfchen gleichmäßig gut mit frischer Farbe beliefert.In a further advantageous embodiment of the subject matter of the invention, an ink supply to the ink chamber is provided in the form of an ink supply slot which extends continuously over the entire width of the ink chamber. As a result of this measure, the wells arranged on the edge regions of the anilox roller are evenly supplied with fresh ink.

Vorteilhaft ist das Kammerrakelgehäuse in Längsrichtung zweigeteilt, wodurch konstruktiv einfach der Zufuhrschlitz erzeugt wird.The chambered doctor blade housing is advantageously divided in two in the longitudinal direction, as a result of which the feed slot is produced in a structurally simple manner.

Ein Ausführungsbeispiel der Erfindungen ist in der Zeichnung dargestellt und wird im folgenden beschrieben.An embodiment of the inventions is shown in the drawing and is described below.

Die Figur zeigt eine schematische Darstellung des erfindungsgemäßen Kammerrakels im Schnitt.The figure shows a schematic representation of the chambered doctor blade according to the invention in section.

Das Farbwerk einer Rotationsdruckmaschine weist eine von unten an eine Rasterwalze 2 angestellte Kammerrakelanordnung 3 auf. Die Kammerrakelanordnung 3 besteht aus einem in Achsrichtung geteiltem Rakelhalter 4, 6 und zwei in Umfangsrichtung der Rasterwalze 2 versetzt angeordneten Rakelblättern 7, 8. Die Rakelhalter 4, 6 und die Rakelblätter 7, 8 bilden zusammen mit nicht dargestellten Seitenschildern eine Farbkammer 9, in welche die Rasterwalze 2 eintaucht. Über die Länge der Rasterwalze 2 können mehrere nebeneinander angeordnete Kammerrakelanordnungen 3 vorgesehen sein. Die Verwendung mehrerer nebeneinander angeordneter Kammerrakelanordnungen 3 erleichtert die Handhabung und ermöglicht eine zonenweise Stillegung der Farbversorgung der Rasterwalze 2.The inking unit of a rotary printing press has a chambered doctor blade arrangement 3, which is positioned from below on an anilox roller 2. The chambered doctor blade arrangement 3 consists of a doctor blade holder 4, 6 divided in the axial direction and two doctor blades 7, 8 arranged offset in the circumferential direction of the anilox roller 2 the anilox roller 2 is immersed. A plurality of chamber doctor blade arrangements 3 arranged next to one another can be provided over the length of the anilox roller 2. The use of a plurality of chamber doctor blade arrangements 3 arranged next to one another simplifies handling and enables the ink supply of the anilox roller 2 to be shut down zone by zone.

Das Rakelblatt 7, im weiteren auch mit Arbeitsrakel bezeichnet, und das Rakelblatt 8, im weiteren auch mit Schließrakel bezeichnet, sind jeweils in einem Winkel α, β(α; β > 90O) unter leichtem Druck an die Rasterwalze 2 angestellt. Die Rakelblätter 7, 8 (hergestellt aus z. B. Stahl oder Polyamid) sind ca. farbkammerlang und weisen eine Breite B (z. B. B = 50 mm) und eine Dicke D (z. B. D = 0,1 mm) auf. Die Rakelblätter 7, 8 sind mit Spiel behaftet in jeweils eine axial verlaufende Nut 11; 12 in dem Rakelhalter 4, 6 angeordnet. Die Nuten 11; 12 weisen jeweils eine Tiefe T (z.B. T = 10 mm) auf. Aus dieser Anordnung ergibt sich für jedes Rakelblatt eine freie Biegelänge L (z. B. L = 40 mm). Die durch dieses Verhältnis von freier Biegelänge L zur Dicke D (L/D∼400) gekennzeichneten Rakelblätter 7, 8 sind daher äußerst flexibel ausgebildet.The doctor blade 7, also referred to below as the working doctor, and the doctor blade 8, also referred to below as the closing doctor, are each made at an angle α, β (α; β> 90 O ) under slight pressure on the anilox roller 2. The doctor blades 7, 8 (made of, for example, steel or polyamide) are approximately the length of the ink chamber and have a width B (for example B = 50 mm) and a thickness D (for example D = 0.1 mm) ) on. The doctor blades 7, 8 are fraught with play in an axially extending groove 11; 12 arranged in the doctor holder 4, 6. The grooves 11; 12 each have a depth T (for example T = 10 mm). This arrangement results in a free bending length L (e.g. L = 40 mm) for each doctor blade. The doctor blades 7, 8 characterized by this ratio of free bending length L to thickness D (L / D /400) are therefore extremely flexible.

Diese äußerst flexibel ausgebildeten Rakelblätter 7, 8 reagieren sehr sensibel auf Druckschwankungen in der Farbkammer 9, indem sie unter der Kraft des Druckes mehr oder weniger stark durchbiegen.These extremely flexible doctor blades 7, 8 react very sensitively to pressure fluctuations in the ink chamber 9 by bending more or less strongly under the force of the pressure.

Eine Druckerhöhung in der Farbkammer 9 wird z. B. hervorgerufen durch eine Änderung der Viskosität der Farbe oder durch eine Erhöhung der Drehzahl der Rasterwalze 2 oder durch eine Bildung von Luftbläschen in der Farbkammer 9. In jedem Fall jedoch rufen diese Druckschwankungen Füllstörungen der Näpfchen 23 der Rasterwalze 2 hervor und führen damit zu Qualitätseinbußen bei der Farbverteilung.A pressure increase in the ink chamber 9 is, for. B. caused by a change in the viscosity of the ink or by an increase in the speed of the anilox roller 2 or by the formation of air bubbles in the ink chamber 9. In any case, however, these pressure fluctuations cause filling disorders of the cups 23 of the anilox roller 2 and thus lead to a loss in quality in the color distribution.

Diese Druckerhöhung in der Farbkammer 9 führt beim Arbeitsrakel 7 dazu, daß es proportional zur Druckerhöhung stärker an die Rasterwalze 2 angedrückt wird. Durch diese Reaktion wird sichergestellt, daß nur Farbe aus der Farbkammer 9 entnommen wird, die sich in den Näpfchen 23 der Rasterwalze 2 befindet. Bei Druckminderung in der Farbkammer 9 läßt die Anstellkraft des Arbeitsrakels 7 an die Rasterwalze 2 wieder nach und schont somit Rakelblatt 7 und die Stege 24 der Rasterwalze 2, wodurch deren Standzeiten erhöht werden.This pressure increase in the ink chamber 9 leads to the fact that it is pressed more strongly onto the anilox roller 2 in proportion to the pressure increase. This reaction ensures that only ink is removed from the ink chamber 9, which is located in the cups 23 of the anilox roller 2. If the pressure in the ink chamber 9 is reduced, the contact force of the working squeegee 7 on the anilox roller 2 decreases again and thus protects the squeegee sheet 7 and the webs 24 of the anilox roller 2, thereby increasing their service life.

Das Schließrakel 8 wird bei der Druckerhöhung in der Farbkammer 9 derart von der Rasterwalze 2 abgebogen, so daß ein kleiner Spalt s (z. B. 0 ≦ s ≦ 0,5 mm) zwischen der Rakelblattkante und der Rasterwalze 2 entsteht. Durch diese Maßnahme wird erreicht, daß durch den Spalt s hindurch mehr bzw. mindestens genauso viel Farbe aus der Farbkammer 9 herausfließen kann, als an Druckfarbe der Farbkammer 9 teils durch eine Farbzufuhr 13, teils durch in den Näpfchen 23 der Rasterwalze 2 verbleibende Restfarbe zugeführt wird.The closing squeegee 8 is bent by the anilox roller 2 when the pressure in the ink chamber 9 increases, so that a small gap s (z. B. 0 ≦ s ≦ 0.5 mm) between the doctor blade edge and the anilox roller 2 is formed. This measure ensures that more or at least as much ink can flow out of the ink chamber 9 through the gap s as is supplied to the ink of the ink chamber 9 partly by an ink supply 13, partly by residual ink remaining in the cups 23 of the anilox roller 2 becomes.

Hierdurch wirkt das Schließrakel 8 als eine Art Überdruckventil gleichmäßig über die gesamte Länge der Farbkammer 9.As a result, the doctor blade 8 acts as a kind of pressure relief valve evenly over the entire length of the ink chamber 9.

Die überschüssige Farbe wird von einem unterhalb der Rakelhalter 4, 6 angeordnetem Farbkasten 14 aufgefangen und mittels einer nicht dargestellten Pumpe der Farbkammer 9 wieder zugeführt, so daß ein Farbkreislauf entsteht.The excess ink is collected by an ink fountain 14 arranged below the squeegee holders 4, 6 and fed back to the ink chamber 9 by means of a pump (not shown), so that an ink cycle is created.

Bei nachlassendem Farbdruck in der Farbkammer 9 federt das Schließrakel 8 dem Farbdruck entsprechend zurück und legt sich unter leichter Vorspannung an die Rasterwalze 2 an. Die Vorspannung der Rakelblätter 7, 8 wird erreicht, indem der Rakelhalter 4, 6 mittels geeigneter Stellmittel (z. B. mechanisch-; elektromechanisch-; pneumatisch oder hydraulisch wirkend) gegen einen einstellbaren, am Gestell angeordneten Anschlag 16 gefahren wird. Zu diesem Zweck weist der Rakelhalter 4, 6 eine seitlich überstehende Grundplatte 17 auf, die mit dem Anschlag 16 in Berührungskontakt bringbar ist.When the ink pressure in the ink chamber 9 decreases, the closing squeegee 8 springs back in accordance with the ink pressure and presses against the anilox roller 2 with slight pretension. The pretensioning of the doctor blades 7, 8 is achieved by moving the doctor holder 4, 6 against an adjustable stop 16 arranged on the frame by means of suitable adjusting means (e.g. acting mechanically; electromechanically; pneumatically or hydraulically). For this purpose, the doctor blade holder 4, 6 has a laterally projecting base plate 17 which can be brought into contact with the stop 16.

Um in der Farbkammer 9 einen gleichmäßigen Druck über die gesamte Länge der Farbkammer 9 zu erzeugen, ist darüberhinaus vorgesehen, daß die Farbzufuhr zur Farbkammer 9 über einen farbkammerlangen Farbzufuhrschlitz 18 erfolgt. Zu diesem Zweck ist eine als Farbstauraum ausgebildete Verteilerkammer 19 vorgesehen, die mit mindestens einem Farbzufuhranschluß 13 verbunden ist.In order to generate a uniform pressure in the ink chamber 9 over the entire length of the ink chamber 9, provision is also made for the ink to be supplied to the ink chamber 9 via an ink chamber slot 18 that is long as the ink chamber. For this purpose, a distribution chamber 19 designed as an ink storage space is provided, which is connected to at least one ink supply connection 13.

Eine konstruktiv einfache Variante ist in der Figur dargestellt, bei der der Rakelhalter 4, 6 als in zwei Teile längsgeteilter Rakelhalter 4, 6 ausgeführt ist. Diese sind miteinander lösbar verbunden und bilden mittels einer schräg verlaufenden Unterseite 21 des abgewinkelten Rakelhalters 4 und einer schräg verlaufenden Oberseite 22 des Rakelhalters 6 eine im Querschnitt dreieckige Verteilerkammer 19. Hierbei berühren sich Unterseite 21 und Oberseite 22 jedoch nicht, so daß der Farbzufuhrschlitz 18 entsteht.A structurally simple variant is shown in the figure, in which the squeegee holder 4, 6 is designed as a squeegee holder 4, 6 which is longitudinally divided into two parts. These are Detachably connected to one another and by means of an inclined underside 21 of the angled doctor blade holder 4 and an inclined top side 22 of the doctor blade holder 6 form a triangular distribution chamber 19. Here, however, the underside 21 and top side 22 do not touch, so that the ink supply slot 18 is formed.

TeilelisteParts list

11
--
22nd
RasterwalzeAnilox roller
33rd
KammerrakelanordnungChamber doctor blade arrangement
44th
RakelhalterDoctor blade holder
55
--
66
RakelhalterDoctor blade holder
77
Rakelblatt (Arbeitsrakel)Doctor blade (working squeegee)
88th
Rakelblatt (Schließrakel)Doctor blade (closing doctor blade)
99
FarbkammerInk chamber
1010th
--
1111
Nut (4)Groove (4)
1212th
Nut (6)Groove (6)
1313
FarbzufuhrInk supply
1414
FarbkastenPaint box
1515
--
1616
Anschlagattack
1717th
GrundplatteBase plate
1818th
FarbzufuhrschlitzInk feed slot
1919th
VerteilerkammerDistribution chamber
2020th
--
2121
Unterseite (4)Bottom (4)
2222
Oberseite (6)Top (6)
2323
NäpfchenCell
2424th
Stegweb
ss
Spaltgap
BB
Breite (7, 8)Width (7, 8)
DD
Dicke (7, 8)Thickness (7, 8)
LL
Biegelänge (7, 8)Bending length (7, 8)
TT
Tiefe (11, 12)Depth (11, 12)
αα
Winkelangle
ββ
Winkelangle

Claims (10)

  1. An inking unit for a web-fed rotary printing machine, having a screen roller (2) and a chamber doctor blade arrangement (3) with a working and a closing doctor blade (7, 8) received on a doctor blade holder (4, 6) and each having a negative angle of incidence, whereof the ratio of free flexion length (L) to thickness (D) in each case has a large value, the pressurized ink chamber (9) being equipped with an overflow cross-section, characterized in that the overflow cross-section adapts to the positive pressure in that an overflow valve in the form of a pressure-dependent gap (S) is provided on the closing doctor blade (8).
  2. An inking unit according to Claim 1, characterized in that the gap (S) is located between the doctor blade edge of the closing doctor blade (8) and the screen roller (2).
  3. An inking unit according to Claims 1 and 2, characterized in that the ink chamber (9) has an ink supply slot (18) which is as wide as the ink chamber.
  4. An inking unit according to Claims 1 to 3, characterized in that there is placed upstream of the ink chamber (9) a distributor chamber (19) which is as wide as the ink chamber.
  5. An inking unit according to Claims 1 to 4, characterized in that the chamber doctor blade arrangement (3) has a longitudinally divided doctor blade holder (4, 6).
  6. An inking unit according to Claims 1 to 5, characterized in that the chamber doctor blade arrangement (3) has a base plate (17), and in that the base plate (17) is arranged such that it may be brought into contact with an adjustable stop (16) fixed to the frame.
  7. An inking unit according to Claims 1 to 6, characterized in that an ink duct (14) is arranged below the doctor blade holders (4, 6), and in that the ink duct (14) is connected to the distributor chamber (19) by means of an ink supply device.
  8. An inking unit according to Claim 1, characterized in that the thickness (D) of the doctor blade (7; 8) is equal to 0.1 mm.
  9. An inking unit according to Claim 1, characterized in that the free flexion length (L) of the doctor blade (7; 8) is equal to 40 mm.
  10. An inking unit according to Claim 2, characterized in that a ratio of free flexion length (L) to thickness (D) L/D ≈ 400.
EP91105899A 1990-04-23 1991-04-13 Ink rail device Expired - Lifetime EP0453910B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012825 1990-04-23
DE4012825A DE4012825A1 (en) 1990-04-23 1990-04-23 CHAMBER Squeegee

Publications (2)

Publication Number Publication Date
EP0453910A1 EP0453910A1 (en) 1991-10-30
EP0453910B1 true EP0453910B1 (en) 1996-07-31

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Application Number Title Priority Date Filing Date
EP91105899A Expired - Lifetime EP0453910B1 (en) 1990-04-23 1991-04-13 Ink rail device

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US (1) US5168806A (en)
EP (1) EP0453910B1 (en)
JP (1) JP2965736B2 (en)
DE (2) DE4012825A1 (en)
RU (1) RU1830007C (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208897C2 (en) * 1992-03-19 1995-02-23 Voith Gmbh J M Applicator for coating webs of paper or cardboard
FR2689451B1 (en) * 1992-04-03 1997-01-17 Komori Chambon INKING DEVICE FOR A HELIOGRAPHIC PRINTING APPARATUS.
DE4213662C2 (en) * 1992-04-25 1995-07-06 Koenig & Bauer Ag Method for setting up a doctor blade for a rotary printing press
DE9218039U1 (en) * 1992-04-25 1993-06-03 Koenig & Bauer AG, 8700 Würzburg Doctor bar for a short inking unit of a web-fed rotary printing press
DE4213660C2 (en) * 1992-04-25 1995-06-08 Koenig & Bauer Ag Short inking unit for a web-fed rotary printing press
DE4213659C2 (en) * 1992-04-25 1995-06-08 Koenig & Bauer Ag Short inking unit for a rotary printing press
JP2622054B2 (en) * 1992-08-07 1997-06-18 ノムラテクノリサーチ株式会社 Coater blade and method for manufacturing the same
DE4401299C2 (en) * 1994-01-18 1997-04-30 Roland Man Druckmasch Device for inking an anilox roller of a rotary printing press
US5688552A (en) * 1995-12-22 1997-11-18 Panel Prints, Inc. Apparatus and method for preparing cylinders in offset lithographic printing presses
IT1286801B1 (en) * 1996-12-04 1998-07-17 Gd Spa GUMMER DEVICE FOR THE APPLICATION OF AN ADHESIVE SUBSTANCE TO SHEET MATERIAL
DE29807941U1 (en) * 1998-05-04 1999-09-09 MAN Roland Druckmaschinen AG, 63075 Offenbach Doctor device
DE19901525C2 (en) * 1999-01-16 2001-02-08 Vits Maschinenbau Gmbh Plant for impregnating and coating paper
US20020152904A1 (en) * 2001-04-23 2002-10-24 Pascal Ross Doctor blade design for metering ink transfer to anilox cells
DE102005050735A1 (en) * 2005-10-22 2007-04-26 Koenig & Bauer Ag Scraper for inking roller of press has base rail mounted for pivoting and carrying adjustable scraper blade
DE102008019433A1 (en) * 2008-04-17 2009-12-03 Hauni Maschinenbau Ag Gluing of strips of material of the tobacco processing industry
US8186296B2 (en) 2010-05-05 2012-05-29 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9295590B2 (en) 2012-11-27 2016-03-29 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path
US9265672B2 (en) 2012-11-27 2016-02-23 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9248054B2 (en) 2012-11-27 2016-02-02 The Procter & Gamble Company Methods and apparatus for making elastic laminates
DE102014223200A1 (en) 2013-11-19 2015-05-21 Koenig & Bauer Aktiengesellschaft Device for coating substrates
JP2016215474A (en) * 2015-05-19 2016-12-22 凸版印刷株式会社 Letterpress printing equipment and organic functional element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704433A1 (en) * 1987-02-12 1988-08-25 Frankenthal Ag Albert SHORT COLOR PLANT
EP0350839A2 (en) * 1988-07-09 1990-01-17 Fischer & Krecke Gmbh & Co. Inking system for printing inks in rotary printing units

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB509447A (en) * 1938-04-12 1939-07-17 John Wood Armstrong Improvements relating to gravure printing machines
US2399688A (en) * 1942-03-09 1946-05-07 Standard Register Co Ink fountain
US2869460A (en) * 1957-02-27 1959-01-20 Emory W Worthington Rotary letterpress ink fountain
US3863597A (en) * 1971-02-03 1975-02-04 Lodewijk Anselrode Device for applying a coating layer
US4008664A (en) * 1973-07-23 1977-02-22 Harris-Intertype Corporation Ink key control system
CA1108469A (en) * 1976-12-21 1981-09-08 John Grosart Inking device
DE3737531A1 (en) * 1987-11-05 1989-05-18 Koenig & Bauer Ag COLOR RACK FOR A ROLLING MACHINE OF A ROTARY PRINTING MACHINE
DE3800412A1 (en) * 1988-01-09 1989-07-20 Frankenthal Ag Albert INK
DE3838546A1 (en) * 1988-01-09 1989-07-20 Frankenthal Ag Albert Doctor device
DE3800411A1 (en) * 1988-01-09 1989-07-20 Frankenthal Ag Albert INK
DE8816767U1 (en) * 1988-09-22 1990-07-05 MAN Roland Druckmaschinen AG, 6050 Offenbach Ink unit with a chamber doctor blade
EP0368485A3 (en) * 1988-10-31 1991-01-30 Seiken Graphics, Inc. Improvements in or relating to lithographic printing
DE3843017C1 (en) * 1988-12-21 1990-05-23 Man Roland Druckmaschinen Ag, 6050 Offenbach, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704433A1 (en) * 1987-02-12 1988-08-25 Frankenthal Ag Albert SHORT COLOR PLANT
EP0350839A2 (en) * 1988-07-09 1990-01-17 Fischer & Krecke Gmbh & Co. Inking system for printing inks in rotary printing units

Also Published As

Publication number Publication date
EP0453910A1 (en) 1991-10-30
DE4012825A1 (en) 1991-10-24
DE59108041D1 (en) 1996-09-05
JPH04224959A (en) 1992-08-14
RU1830007C (en) 1993-07-23
JP2965736B2 (en) 1999-10-18
US5168806A (en) 1992-12-08
DE4012825C2 (en) 1993-08-12

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