EP0042934A1 - Ink fountain in an inking mechanism of a printing machine - Google Patents

Ink fountain in an inking mechanism of a printing machine Download PDF

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Publication number
EP0042934A1
EP0042934A1 EP81103308A EP81103308A EP0042934A1 EP 0042934 A1 EP0042934 A1 EP 0042934A1 EP 81103308 A EP81103308 A EP 81103308A EP 81103308 A EP81103308 A EP 81103308A EP 0042934 A1 EP0042934 A1 EP 0042934A1
Authority
EP
European Patent Office
Prior art keywords
ink fountain
metering
metering bar
leg
recess
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
EP81103308A
Other languages
German (de)
French (fr)
Other versions
EP0042934B1 (en
Inventor
Claus Simeth
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
Priority to AT81103308T priority Critical patent/ATE6412T1/en
Publication of EP0042934A1 publication Critical patent/EP0042934A1/en
Application granted granted Critical
Publication of EP0042934B1 publication Critical patent/EP0042934B1/en
Expired 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
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices

Definitions

  • the invention relates to an ink fountain on inking units of printing presses with a duct roller and a metering bar which can be adjusted to the duct roller via an adjusting means.
  • Metering strips of this type serve to produce the thinnest and most uniform ink film possible on the duct roller. So that the ink film thickness on the duct roller can be changed according to the print motif, the metering strips are designed zonally adjustable in their distance from the duct roller. Appropriate devices have already become known from various publications for actuating the individual zones of the metering bar.
  • a device for adjusting the color meter (metering strip) on printing machines has become known, in which the color knife has a cross pin on its underside. This cross pin engages in a recess of a lever and enables a positive actuation of the color knife.
  • a color knife that can also be positively adjusted is shown in US Pat. No. 144,742.
  • a threaded bolt is attached to the ink knife itself, which interacts with an adjusting nut rotatably attached to the ink fountain.
  • the threaded bolt in the adjusting nut can then be moved up and down, as a result of which the color meter can also be adjusted in a variable manner toward the ductor.
  • the device according to DE-PS 1 243 696 requires a lever which can be actuated by a worm gear to set the color knife gearbox, which requires high manufacturing accuracy for the exact setting of the color knife. Furthermore, it is necessary that the color knife must always be kept under pre-tension, since otherwise the tolerances caused by the production would not be compensable.
  • both devices have the disadvantage that paint and dirt can penetrate into the adjusting mechanism, as a result of which the precise working of the adjusting elements is no longer guaranteed.
  • the object of the invention is therefore to provide a simple adjusting mechanism by means of which a metering bar can be positively adjusted to the ink duct. Furthermore, it should be ensured that the adjusting mechanism is protected against penetrating paint.
  • the advantage of this device is that the adjustment mechanism is simple and therefore inexpensive to manufacture. By designing the plastic metering strip, it can also be produced inexpensively by spraying. Another advantage is that the metering strip can be used without pretension, since the actuation is absolutely positive and therefore no play in the adjusting mechanism has to be compensated for.
  • the sealing mechanism is completely secured against dirt by the sealing attachment to the ink fountain.
  • the exemplary embodiment shown in the drawing shows an ink fountain 1 and a ductor 2, the space 11 filled with the color being delimited by the ink fountain base 12 and the ductor 2.
  • the ink fountain 1 has a recess 3 in which a metering strip 4 made of highly wear-resistant plastic is fastened.
  • the metering strip 4 seals with its long sides 5, 6 the space 11 from the recess 3, so that no color can get here.
  • an elastically deformable seal 10 is provided between the longitudinal side 6 of the metering strip 4 and the bottom 13 of the recess 3, so that it also prevents the penetration of paint into the recess 3.
  • the metering bar 4 can e.g. be made angularly formed by spraying.
  • the metering strip 4 has a groove 7 which extends over its length and runs parallel to the duct 2.
  • An eccentric shoulder 9 of an actuating means 8 engages in this groove 7 and connects the actuating means 8 to the metering strip 4 in a form-fitting manner.
  • the metering bar 4 is set in an up and down movement, whereby the gap 5 is increased or decreased.
  • the stroke of the metering bar 4 is correspondingly small or large.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Silicon Polymers (AREA)
  • Ink Jet (AREA)
  • Wet Developing In Electrophotography (AREA)

Abstract

An ink fountain formed of a trough and fountain roller, the trough having a recess along its presented edge which defines a ledge surface. A metering bar of durable resilient plastic, and which is of "L" cross section, has a first leg which occupies the recess and a second leg which overlaps, and is sealed to, the bottom of the trough, with the corner of the metering bar defining a gap. Adjusting keys are spaced along the metering bar, each key having a rotatable stem carrying an eccentric at its tip. The first leg of the metering bar has a groove of constant width extending along its inner surface, parallel to the fountain roller, in which all of the eccentrics are snugly received for localized adjustment of the gap, positively in both directions. A resilient sealing strip interposed between the ledge surface and the metering bar seals the second leg of the metering bar with respect to the frame.

Description

Die Erfindung betrifft einen Farbkasten an Farbwerken von Druckmaschinen mit einer Duktorwalze und einer zur Duktorwalze über ein Stellmittel einstellbaren Dosierleiste.The invention relates to an ink fountain on inking units of printing presses with a duct roller and a metering bar which can be adjusted to the duct roller via an adjusting means.

Derartige Dosierleisten dienen der Erzeugung eines möglichst dünnen und gleichmäßigen Farbfilms auf der Duktorwalze. Damit die Farbfilmdicke auf der Duktorwalze entsprechend dem Druckmotiv verändert werden kann, sind die Dosierleisten zonal in ihrem Abstand zur Duktorwalze einstellbar ausgebildet. Für die Betätigung der einzelnen Zonen der Dosierleiste sind bereits aus verschiedenen Veröffentlichungen entsprechende Vorrichtungen bekannt geworden.Metering strips of this type serve to produce the thinnest and most uniform ink film possible on the duct roller. So that the ink film thickness on the duct roller can be changed according to the print motif, the metering strips are designed zonally adjustable in their distance from the duct roller. Appropriate devices have already become known from various publications for actuating the individual zones of the metering bar.

So ist z.B. aus der DE-PS 1 243 696 eine Einrichtung zum Einstellen des Farbmessers (Dosierleiste) an Druckereimaschinen bekannt geworden, bei der das Farbmesser an seiner Unterseite einen Querzapfen aufweist. Dieser Querzapfen greift in eine Ausnehmung eines Hebels ein und ermöglicht eine formschlüssige Betätigung des Farbmessers. Ein ebenfalls formschlüssig verstellbares Farbmesser wird in der US-PS 144 742 gezeigt. Bei dieser Ausgestaltung ist am Farbmesser selbst ein Gewindebolzen angebracht, welcher mit einer am Farbkasten drehbar befestigten Stellmutter zusammenwirkt. Je nach Drehsinn der Stellmutter läßt sich dann der Gewindebolzen in der Stellmutter auf-und abbewegen, wodurch auch das Farbmesser zum Duktor hin veränderbar einstellbar ist.For example, from DE-PS 1 243 696 a device for adjusting the color meter (metering strip) on printing machines has become known, in which the color knife has a cross pin on its underside. This cross pin engages in a recess of a lever and enables a positive actuation of the color knife. A color knife that can also be positively adjusted is shown in US Pat. No. 144,742. In this embodiment, a threaded bolt is attached to the ink knife itself, which interacts with an adjusting nut rotatably attached to the ink fountain. Depending on the direction of rotation of the adjusting nut, the threaded bolt in the adjusting nut can then be moved up and down, as a result of which the color meter can also be adjusted in a variable manner toward the ductor.

Bezogen auf die Erfindung haben diese Vorrichtungen entscheidende Nachteile.In relation to the invention, these devices have decisive disadvantages.

Die Vorrichtung nach DE-PS 1 243 696 benötigt zum Einstellen des Farbmessers einen über einen Schneckentrieb betätigbares Hebelgetriebe, welches zur exakten Einstellung des Farbmessers eine hohe Fertigungsgenauigkeit erfordert. Weiterhin ist es erforderlich, daß das Farbmesser immer unter Vorspannung gehalten werden muß, da sonst die durch die Fertigung bedingten Toleranzen nicht ausgleichbar wären.The device according to DE-PS 1 243 696 requires a lever which can be actuated by a worm gear to set the color knife gearbox, which requires high manufacturing accuracy for the exact setting of the color knife. Furthermore, it is necessary that the color knife must always be kept under pre-tension, since otherwise the tolerances caused by the production would not be compensable.

Bei der Ausgestaltung gemäß US-PS 144 742 ist die exakte Einstellung des Farbmessers nur gefühlsmäßig durchzuführen, denn das Stellelement befindet sich unterhalb des Farbkastens an einer üblicherweise schwer zugänglichen oder nur schwer erreichbaren Stelle. Ebenso muß bei dieser Vorrichtung das Farbmesser auch immer unter Vorspannung gehalten werden, damit das Gewindespiel aus dem Stellmechanismus entfernt wird.In the configuration according to US Pat. No. 144,742, the exact setting of the color knife can only be carried out emotionally, because the actuating element is located below the color box at a location that is usually difficult to access or difficult to reach. Likewise, with this device the color knife must always be kept under tension so that the thread play is removed from the adjusting mechanism.

Weiterhin haftet beiden Vorrichtungen der Nachteil an, daß in den Stellmechanismus Farbe und Schmutz eindringen kann, wodurch ein exaktes Arbeiten der Stellelemente nicht mehr gewährleistet ist.Furthermore, both devices have the disadvantage that paint and dirt can penetrate into the adjusting mechanism, as a result of which the precise working of the adjusting elements is no longer guaranteed.

Die Aufgabe der Erfindung besteht deshalb darin, einen einfachen Stellmechanismus zu schaffen, durch den eine Dosierleiste formschlüssig an den Farbduktor anstellbar ist. Weiterhin soll gewährleistet sein, daß der Stellmechanismus gegen eindringende Farbe geschützt ist.The object of the invention is therefore to provide a simple adjusting mechanism by means of which a metering bar can be positively adjusted to the ink duct. Furthermore, it should be ensured that the adjusting mechanism is protected against penetrating paint.

Diese Aufgabe wird durch das Kennzeichen des ersten Patentanspruchs gelöst.This object is achieved by the characterizing part of the first claim.

Der Vorteil dieser Vorrichtung besteht darin, daß der Einstellmechanismus einfach und dadurch auch billig herstellbar ist. Durch die Ausführung der Dosierleiste aus Kunststoff kann diese ebenfalls kostengünstig im Spritzverfahren hergestellt werden. Ein weiterer Vorteil ist, daß die Dosierleiste ohne Vorspannung angewendet werden kann, da die Betätigung absolut formschlüssig erfolgt und somit kein Spiel im Stellmechanismus ausgeglichen werden muß. Durch die abdichtende Befestigung am Farbkasten ist der Stellmechanismus vollkommen gegen Verschmutzen gesichert.The advantage of this device is that the adjustment mechanism is simple and therefore inexpensive to manufacture. By designing the plastic metering strip, it can also be produced inexpensively by spraying. Another advantage is that the metering strip can be used without pretension, since the actuation is absolutely positive and therefore no play in the adjusting mechanism has to be compensated for. The sealing mechanism is completely secured against dirt by the sealing attachment to the ink fountain.

An einem Ausgestaltungsbeispiel ist die Erfindung näher erläutert:

  • Fig. 1 zeigt einen Farbkasten entsprechend der Erfindung, im Schmitt,
  • Fig. 2 zeigt den Stellexzenter.
The invention is explained in more detail using an exemplary embodiment:
  • Fig. 1 shows an ink fountain according to the invention, in the Schmitt,
  • Fig. 2 shows the eccentric.

Das in der Zeichnung dargestellte Ausführungsbeispiel zeigt einen Farbkasten 1 und einen Duktor 2, wobei der durch die Farbe ausgefüllte Raum 11 durch den Farbkastenboden 12 und den Duktor 2 begrenzt wird.The exemplary embodiment shown in the drawing shows an ink fountain 1 and a ductor 2, the space 11 filled with the color being delimited by the ink fountain base 12 and the ductor 2.

Im Bereich des Duktors 2 weist der Farbkasten 1 eine Ausnehmung 3 auf in der eine aus hochverschleißfestem Kunststoff gefertigte Dosierleiste 4 befestigt ist. Die Dosierleiste 4 dichtet mit ihren Längsseiten 5, 6 den Raum 11 gegenüber der Ausnehmung 3 ab, so daß hierhin keine Farbe gelangen kann. Zwischen der Längsseite 6 der Dosierleiste 4 und dem Boden 13 der Ausnehmung 3 ist eine elastisch verformbare Dichtung 10 so vorgesehen, daß sie ebenfalls das Eindringen von Farbe in die Ausnehmung 3 verhindert.In the area of the ductor 2, the ink fountain 1 has a recess 3 in which a metering strip 4 made of highly wear-resistant plastic is fastened. The metering strip 4 seals with its long sides 5, 6 the space 11 from the recess 3, so that no color can get here. Between the longitudinal side 6 of the metering strip 4 and the bottom 13 of the recess 3, an elastically deformable seal 10 is provided so that it also prevents the penetration of paint into the recess 3.

Die Dosierleiste 4 kann z.B. winkelförmig ausgebildet im Spritzverfahren hergestellt sein. Die Dosierleiste 4 weist eine sich über ihre Länge erstreckende, parallel zum Duktor 2 verlaufende Nut 7 auf. In diese Nut 7 greift ein exzentrischer Absatz 9 eines Betätigungsmittels 8 ein und verbindet das Betätigungsmittel 8 mit der Dosierleiste 4 formschlüssig.The metering bar 4 can e.g. be made angularly formed by spraying. The metering strip 4 has a groove 7 which extends over its length and runs parallel to the duct 2. An eccentric shoulder 9 of an actuating means 8 engages in this groove 7 and connects the actuating means 8 to the metering strip 4 in a form-fitting manner.

Durch Verdrehen des Betätigungsmittels 8 mit dem exzentrischen Absatz 9 wird die Dosierleiste 4 in eine auf- und abgehende Bewegung versetzt, wodurch der Spalt 5 vergrößert oder verkleinert wird. Je nach der Exzentrizität des Absatzes 9 zum Betätigungsmittel 8 ist auch der Hub der Dosierleiste 4 entsprechend klein oder groß.By turning the actuating means 8 with the eccentric shoulder 9, the metering bar 4 is set in an up and down movement, whereby the gap 5 is increased or decreased. Depending on the eccentricity of the paragraph 9 to the actuating means 8, the stroke of the metering bar 4 is correspondingly small or large.

In der Praxis hat sich gezeigt, daß eine Exzentrizität e von ca. 0,2 mm und ein Drehwinkel des Betätigungsmittel 8 von 150° eine ausreichende Variation der Dosierleiste 4 gestattet.In practice, it has been shown that an eccentricity e of approximately 0.2 mm and an angle of rotation of the actuating means 8 of 150 ° allow sufficient variation of the metering strip 4.

Claims (3)

1.) Farbkasten an Farbwerken von Druckmaschinen mit einer Duktorwalze und einer zur Duktorwalze über ein Stellmittel einstellbaren Dosierleiste,
dadurch gekennzeichnet,
daß der Farbkasten (1) im Bereich der Duktorwalze (2) eine Ausnehmung (3) aufweist, in der eine aus hochverschleißfestem-Kunststoff bestehende Dosierleiste (4) an ihren Längsseiten (5, 6) gegenüber dem Farbkasten (1) und der Duktorwalze (2) abdichtend befestigt ist, daß die Dosierleiste (4) auf der zur Ausnehmung (3) weisenden Seite eine zur Farbduktorwalze (2) achsparallel verlaufende Nut (7) aufweist, in die ein im Farbkasten (1) verdrehbar gelagertes Betätigungselement (8) formschlüssig eingreift.1.) ink fountain on inking units of printing presses with a duct roller and a metering bar which can be adjusted to the duct roller via an adjusting means,
characterized,
that the ink fountain (1) in the region of the duct roller (2) has a recess (3) in which a metering strip (4) made of highly wear-resistant plastic on its long sides (5, 6) opposite the ink fountain (1) and the duct roller ( 2) is attached in a sealing manner so that the metering strip (4) on the side facing the recess (3) has a groove (7) running axially parallel to the inking roller (2), into which an actuating element (8) rotatably mounted in the ink fountain (1) has a positive fit intervenes. 2.) Farbkasten nach Anspruch 1,
dadurch gekennzeichnet,
daß das Betätigungselement (8) an seinem der Dosierleiste (4) zugekehrten Seite einen exzentrischen Absatz (9) aufweist, der formschlüssig in die Nut (7) der Dosierleiste (4) eingreift.2.) ink fountain according to claim 1,
characterized,
that the actuating element (8) on its side facing the metering strip (4) has an eccentric shoulder (9) which engages in a form-fitting manner in the groove (7) of the metering strip (4). 3.) Farbkasten nach Anspruch 1,
dadurch gekennzeichnet,
daß die Dosierleiste (4) mit ihrer Längsseite (6) gegenüber dem Farbkasten (1) mit einer elastisch verformbaren Dichtung (10) abgedichtet ist.3.) ink fountain according to claim 1,
characterized,
that the metering strip (4) is sealed with its longitudinal side (6) relative to the ink fountain (1) with an elastically deformable seal (10).
EP81103308A 1980-06-28 1981-05-02 Ink fountain in an inking mechanism of a printing machine Expired EP0042934B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103308T ATE6412T1 (en) 1980-06-28 1981-05-02 INK BOX ON INK UNITS OF PRINTING PRESSES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3024453 1980-06-28
DE3024453A DE3024453C1 (en) 1980-06-28 1980-06-28 Ink fountain in the inking unit of printing machines

Publications (2)

Publication Number Publication Date
EP0042934A1 true EP0042934A1 (en) 1982-01-06
EP0042934B1 EP0042934B1 (en) 1984-02-29

Family

ID=6105820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103308A Expired EP0042934B1 (en) 1980-06-28 1981-05-02 Ink fountain in an inking mechanism of a printing machine

Country Status (6)

Country Link
US (1) US4350095A (en)
EP (1) EP0042934B1 (en)
JP (1) JPS59392B2 (en)
AT (1) ATE6412T1 (en)
BR (1) BR8103631A (en)
DE (2) DE3024453C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778364A1 (en) * 1998-05-11 1999-11-12 Jean Claude Sarda Residual ink cleaning structure in ink supply assembly of offset, continuous, printing press
WO1999058339A1 (en) * 1998-05-11 1999-11-18 Sarda Jean Claude Inking device for a printing press
WO2002016138A1 (en) * 2000-08-23 2002-02-28 Cti-Systems Gmbh Module comprising zone colorimeter sheets and crossbearer segments

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3033996C2 (en) * 1980-09-10 1984-03-08 Koenig & Bauer AG, 8700 Würzburg Ink box for printing machines
DE3218045A1 (en) * 1982-05-13 1983-11-17 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach INKBOX FOR PRINTING MACHINES
FR2540434A1 (en) * 1983-02-08 1984-08-10 Chambon Machines INPUT SEGMENTS DOSERS RULES INDIVIDUALLY FOR AN PRINTER
JPS6399949A (en) * 1986-06-24 1988-05-02 Koichi Muraoka Ink regulating device of printer
DE19910989A1 (en) * 1999-03-11 2000-09-14 Heidelberger Druckmasch Ag Doctor blade assembly for ink supply in rotary printing machines has several segments connected side by side on support bar with positive locking connection between contact faces
ATE251549T1 (en) * 1999-03-11 2003-10-15 Heidelberger Druckmasch Ag SEGMENTED PAINT KNIFE ARRANGEMENT ON A PAINT FEEDING DEVICE
US7194955B1 (en) * 2005-09-08 2007-03-27 Clark James R Printing press ink fountain adjustment system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US144742A (en) * 1873-11-18 Improvement in rotary printing-presses

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190929A (en) * 1937-08-16 1940-02-20 Duplex Printing Press Co Printing press fountain
US2387332A (en) * 1940-08-03 1945-10-23 Miller Printing Machinery Co Inker mechanism
DE1243696B (en) * 1963-06-22 1967-07-06 Adamovske Strojirny Np Device for setting the inking unit knife on printing machines
DE2228625B2 (en) * 1972-06-13 1974-07-11 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Ink box for printing machines
US4058058A (en) * 1976-02-26 1977-11-15 George Hantscho Company, Inc. Ink fountain for printing presses
DE2937037C2 (en) * 1979-09-13 1984-01-26 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Ink metering device on a printing press

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US144742A (en) * 1873-11-18 Improvement in rotary printing-presses

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Keine Entgegenhaltungen. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778364A1 (en) * 1998-05-11 1999-11-12 Jean Claude Sarda Residual ink cleaning structure in ink supply assembly of offset, continuous, printing press
WO1999058339A1 (en) * 1998-05-11 1999-11-18 Sarda Jean Claude Inking device for a printing press
US6584901B1 (en) 1998-05-11 2003-07-01 Jean-Claude Sarda Inking device for a printing press
WO2002016138A1 (en) * 2000-08-23 2002-02-28 Cti-Systems Gmbh Module comprising zone colorimeter sheets and crossbearer segments

Also Published As

Publication number Publication date
BR8103631A (en) 1982-03-02
JPS59392B2 (en) 1984-01-06
DE3024453C1 (en) 1981-12-24
DE3162411D1 (en) 1984-04-05
JPS5787367A (en) 1982-05-31
EP0042934B1 (en) 1984-02-29
US4350095A (en) 1982-09-21
ATE6412T1 (en) 1984-03-15

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