EP0103103B1 - Duct roller for an inking unit of a rotary machine - Google Patents

Duct roller for an inking unit of a rotary machine Download PDF

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Publication number
EP0103103B1
EP0103103B1 EP83106858A EP83106858A EP0103103B1 EP 0103103 B1 EP0103103 B1 EP 0103103B1 EP 83106858 A EP83106858 A EP 83106858A EP 83106858 A EP83106858 A EP 83106858A EP 0103103 B1 EP0103103 B1 EP 0103103B1
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EP
European Patent Office
Prior art keywords
duct roller
ink
roller
duct
ink fountain
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
Application number
EP83106858A
Other languages
German (de)
French (fr)
Other versions
EP0103103A2 (en
EP0103103A3 (en
Inventor
Rainer Burger
Gerhard Bittl
Ingo Köbler
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 EP0103103A2 publication Critical patent/EP0103103A2/en
Publication of EP0103103A3 publication Critical patent/EP0103103A3/en
Application granted granted Critical
Publication of EP0103103B1 publication Critical patent/EP0103103B1/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
    • B41F31/26—Construction of inking 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
    • Y10S118/00—Coating apparatus
    • Y10S118/15—Roller structure

Definitions

  • the invention relates to an ink fountain roller for an inking unit of a rotary printing press with an ink-guiding circular cylindrical outer surface to which an ink knife can be adjusted for the purpose of ink regulation and is passed on from the ink to an additional inking roller that can be set on it, with a device for removing the dirt particles present in the ink supply.
  • an ink fountain roller of the type described above is known.
  • a helical groove extending in the axial direction is provided in this known ink fountain roller, into which the ink knife should push the dirt particles.
  • Sufficient removal of the disruptive dirt particles cannot be achieved with this groove, since because of the gap which is usually present between the ink knife of the lateral surface of the ink fountain roller, these cannot be completely scraped off the lateral surface of the ink fountain roller and introduced into the groove.
  • the object of the invention is to provide an ink fountain roller in such a way that, despite the required distance between the outer surface of the ink fountain roller and the ink knife, it is possible to remove the dirt particles accumulating in the area of the gap.
  • the ink fountain 1 shown in FIG. 1 carries an ink knife 2.
  • An ink fountain roller 3 is attached to the ink fountain 1, which forms the front boundary of the ink fountain filled with printing ink.
  • Ink is transferred from the ink fountain roller 3 to the subsequent inking roller 4, which is referred to as the film roller if the inking unit is designed as a film inking unit.
  • Figure 1 shows that there is a gap between the lower edge of the ink knife 1 and the ink fountain roller 3. Its width depends on the desired thickness of the ink film to be transferred with the ink fountain roller 3. As is known, the ink fountain roller 3 is operated at a much lower speed than the downstream film roller 4, it is also necessary to maintain a distance, namely a gap 6, between the ink fountain roller 3 and the film roller 4. Usually, the width of the gap 6 between the ink fountain roller 3 and the film roller 4 is smaller than that of the gap 5 between the ink knife 2 and the ink fountain roller 3. This ensures that the ink film located on the ink fountain roller 3 is produced with a corresponding thickness and partial transfer to the subsequent film roller 4 is thus possible by ink splitting.
  • the arrows on the rollers 3, 4, which are not designated in any more detail, indicate the direction of rotation thereof.
  • the invention proposes to provide 3 surveys on the lateral surface of the ink fountain roller, which free the aforementioned location from the undesirable dirt particles, i. H. remove from the ink supply of the ink fountain.
  • a groove 7 running in the axial direction is therefore milled into the lateral surface of the ink fountain roller 3.
  • This groove 7 can be straight or spiral.
  • a stripping element made of an elastic material is preferably inserted, for example glued, into the groove 7.
  • Hard rubber and plastic are suitable as materials for the stripping element 8.
  • the stripping element 8 in the groove 7 protrudes slightly from the circular cylindrical surface of the ink fountain roller 3. The extent of this elevation should correspond approximately to the width of the gap 5. If it is slightly above, the relatively soft spacer 8 during operation, i. H. during the rotation of the ink fountain roller 3, removed by the relatively hard edge of the ink knife 2, so that an automatic adjustment of the part of the stripping element 8 protruding from the outer surface of the ink fountain roller 3 to the gap width of the gap 5 occurs.
  • a further grinding of the stripping element 8 takes place in the gap 6 between the ink fountain roller 3 and the film roller 4, since, as already mentioned, this gap 6 is smaller than the gap 5.
  • the stripping element 8 preferably has a width of approximately 3 mm and is seated in a groove 7 with a depth of 4 mm.
  • the wiping element 8 By using the wiping element 8, the dirt particles accumulating in the area between the lateral surface of the ink fountain roller 3 and the setting area of the ink knife 2 are drawn out of the ink fountain and fed to the further color cycle, where they no longer have a disruptive effect.
  • FIG. 3 shows another cross-sectional shape of a stripping element 10 which is inserted in a groove 9 on the surface of the ink fountain roller 3.
  • This stripping element 10 has a wedge-shaped cross section in the area protruding from the outer surface of the ink fountain roller 3.
  • stripping element 8 or 10 In the exemplary embodiments according to FIGS. 2 and 3, only one stripping element 8 or 10 is shown. If the desired cleaning effect is not achieved with a stripping element in the ink fountain roller 3, two or more such stripping elements can also be provided on the circumference of the ink fountain roller 3.
  • the use of the stripping elements 8, 10 in the axially extending, helical grooves 7, 9 offers sufficient fixation and positioning of the stripping elements 8, 10.
  • stripping elements with the desired thickness without using grooves in the ink fountain rollers to be applied directly to the lateral surface of the ink fountain rollers 3, for example by means of a suitable adhesive.

Description

Die Erfindung betrifft eine Farbkastenwalze für ein Farbwerk einer Rotationsdruckmaschine mit einer farbführenden kreiszylindrischen Mantelfläche, an die zwecks Farbregulierung ein Farbmesser anstellbar ist und von der Farbe auf eine an diese anstellbare weitere Farbwerkwalze weitergegeben wird, mit einer Einrichtung zur Beseitigung der im Farbvorrat vorhandenen Schmutzteilchen.The invention relates to an ink fountain roller for an inking unit of a rotary printing press with an ink-guiding circular cylindrical outer surface to which an ink knife can be adjusted for the purpose of ink regulation and is passed on from the ink to an additional inking roller that can be set on it, with a device for removing the dirt particles present in the ink supply.

Aus der DE-AS 1 918 987 ist eine Farbkastenwalze der vorangehend bezeichneten Gattung bekannt. Zur Beseitigung der sich in dem Farbvorrat befindlichen auf der Mantelfläche der Farbkastenwalze abgelagerten Schmutzteilchen ist in dieser bekannten Farbkastenwalze eine sich in Achsrichtung erstreckende und schraubenförmig verlaufende Nut vorgesehen, in die das Farbmesser die Schmutzteilchen hineinschieben soll. Mit dieser Nut ist keine ausreichende Beseitigung der störenden Schmutzteilchen erreichbar, da wegen des üblicherweise vorhandenen Spaltes zwischen dem Farbmesser der Mantelfläche der Farbkastenwalze diese nicht vollständig von der Mantelfläche der Farbkastenwalze abgerakelt und in die Nut eingebracht werden können.From DE-AS 1 918 987 an ink fountain roller of the type described above is known. In order to eliminate the dirt particles deposited in the ink supply on the lateral surface of the ink fountain roller, a helical groove extending in the axial direction is provided in this known ink fountain roller, into which the ink knife should push the dirt particles. Sufficient removal of the disruptive dirt particles cannot be achieved with this groove, since because of the gap which is usually present between the ink knife of the lateral surface of the ink fountain roller, these cannot be completely scraped off the lateral surface of the ink fountain roller and introduced into the groove.

Aufgabe der Erfindung ist es, eine Farbkastenwalze so auszubilden, daß trotz des erforderlichen Abstandes zwischen der Mantelfläche der Farbkastenwalze und dem Farbmesser eine Beseitigung der sich im Bereich des Spaltes ansammelnden Schmutzteilchen möglich ist.The object of the invention is to provide an ink fountain roller in such a way that, despite the required distance between the outer surface of the ink fountain roller and the ink knife, it is possible to remove the dirt particles accumulating in the area of the gap.

Diese Aufgabe wird durch die Anwendung der Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen sowie aus der Beschreibung in Verbindung mit den Zeichnungen. In diesen zeigen :

  • Figur 1 In schematischer Darstellung den farbkastennahen Teil eines Filmfarbwerkes für eine Rotationsdruckmaschine und
  • Figur 2 eine vereinfachte Teilansicht der erfindungsgemäß ausgebildeten Farbkastenwalze und
  • Figur 3 eine vereinfachte Teilansicht einer weiteren Ausführungsform der erfindungsgemäßen Farbkastenwalze.
This object is achieved by applying the features of the characterizing part of claim 1. Advantageous developments of the invention result from the subclaims and from the description in conjunction with the drawings. In these show:
  • Figure 1 is a schematic representation of the ink fountain-near part of a film inking unit for a rotary printing press and
  • Figure 2 is a simplified partial view of the ink fountain roller designed according to the invention and
  • Figure 3 is a simplified partial view of another embodiment of the ink fountain roller according to the invention.

Der in Figur 1 gezeigte Farbkasten 1 trägt ein Farbmesser 2. An den Farbkasten 1 ist eine Farbkastenwalze 3 angestellt, die die vordere Begrenzung des mit Druckfarbe gefüllten Farbkastens bildet. Von der Farbkastenwalze 3 wird Farbe auf die nachfolgende Farbwerkwalze 4 übertragen, die als Filmwalze bezeichnet wird, wenn das Farbwerk als Filmfarbwerk konzipiert ist.The ink fountain 1 shown in FIG. 1 carries an ink knife 2. An ink fountain roller 3 is attached to the ink fountain 1, which forms the front boundary of the ink fountain filled with printing ink. Ink is transferred from the ink fountain roller 3 to the subsequent inking roller 4, which is referred to as the film roller if the inking unit is designed as a film inking unit.

Figur 1 läßt erkennen, daß zwischen der Unterkante des Farbmessers 1 und der Farbkastenwalze 3 ein Spalt vorhanden ist. Seine Breite hängt ab von der gewünschten Dicke des mit der Farbkastenwalze 3 zu übertragenden Farbfilmes. Da bekanntlich die Farbkastenwalze 3 mit einer wesentlich niedrigeren Geschwindigkeit als die nachgeschaltete Filmwalze 4 betrieben wird, ist auch zwischen der Farbkastenwalze 3 und der Filmwalze 4 die Einhaltung eines Abstandes, nämlich ein Spalt 6, erforderlich. Üblicherweise ist die Breite des Spaltes 6 zwischen der Farbkastenwalze 3 und der Filmwalze 4 kleiner als die des Spaltes 5 zwischen dem Farbmesser 2 und der Farbkastenwalze 3. Dadurch ist sichergestellt, daß der sich auf der Farbkastenwalze 3 befindliche Farbfilm mit einer entsprechenden Dicke erzeugt wird und somit durch Farbspaltung eine Teilübertragung auf die nachfolgende Filmwalze 4 möglich ist. Die nicht näher bezeichneten Pfeile an den Walzen 3, 4 geben die Rotationsrichtung derselben an.Figure 1 shows that there is a gap between the lower edge of the ink knife 1 and the ink fountain roller 3. Its width depends on the desired thickness of the ink film to be transferred with the ink fountain roller 3. As is known, the ink fountain roller 3 is operated at a much lower speed than the downstream film roller 4, it is also necessary to maintain a distance, namely a gap 6, between the ink fountain roller 3 and the film roller 4. Usually, the width of the gap 6 between the ink fountain roller 3 and the film roller 4 is smaller than that of the gap 5 between the ink knife 2 and the ink fountain roller 3. This ensures that the ink film located on the ink fountain roller 3 is produced with a corresponding thickness and partial transfer to the subsequent film roller 4 is thus possible by ink splitting. The arrows on the rollers 3, 4, which are not designated in any more detail, indicate the direction of rotation thereof.

Durch Schmutzpartikel, die sich im Bereich des Spaltes 5 zwischen der Farbkastenwalze 3 und dem Farbmesser 2 festsetzen, wird die Gleichmäßigkeit der entsprechend dem Abstand Farbkastenwalze-Farbmesser zu erzeugenden Farbschicht gestört.Dirt particles that settle in the area of the gap 5 between the ink fountain roller 3 and the ink knife 2 disrupt the uniformity of the ink layer to be produced in accordance with the distance between the ink fountain roller and ink knife.

Zur Beseitigung des aufgezeigten Problems schlägt die Erfindung vor, auf der Mantelfläche der Farbkastenwalze 3 Erhebungen vorzusehen, die die vorgenannte Stelle von den unerwünschten Schmutzteilchen befreien, d. h. aus dem Farbvorrat des Farbkastens entfernen. Gemäß Figur 2 wird deshalb in die Mantelfläche der Farbkastenwalze 3 eine in Achsrichtung verlaufende Nut 7 eingefräst. Diese Nut 7 kann gerade oder spiralförmig verlaufen.To eliminate the problem shown, the invention proposes to provide 3 surveys on the lateral surface of the ink fountain roller, which free the aforementioned location from the undesirable dirt particles, i. H. remove from the ink supply of the ink fountain. According to FIG. 2, a groove 7 running in the axial direction is therefore milled into the lateral surface of the ink fountain roller 3. This groove 7 can be straight or spiral.

In die Nut 7 ist ein Abstreifelement vorzugsweise aus einem elastischen Material eingesetzt, bspw. eingeklebt. Als Materialien für das Abstreifelement 8 eignen sich Hartgummi und Kunststoff. Das Abstreifelement 8 in der Nut 7 ragt geringfügig aus der kreiszylindrischen Mantelfläche der Farbkastenwalze 3 heraus. Das Maß dieser Überhöhung sollte etwa der Breite des Spaltes 5 entsprechen. Liegt es etwas darüber, so wird das verhältnismäßig weiche Abstandselement 8 während des Betriebes, d. h. während der Rotation der Farbkastenwalze 3, durch die verhältnismäßig harte Kante des Farbmessers 2 abgetragen, so daß sich eine automatische Anpassung des aus der Mantelfläche der Farbkastenwalze 3 herausragenden Teils des Abstreifelementes 8 an die Spaltbreite des Spaltes 5 einstellt. Ein weiterer Abschliff des Abstreifelementes 8 erfolgt in dem Spalt 6 zwischen der Farbkastenwalze 3 und der Filmwalze 4, da, wie bereits erwähnt, dieser Spalt 6 kleiner als der Spalt 5 ist. Es ist jedoch auch möglich, das Überstandsmaß des Abstreifelementes 8 vorab so festzulegen, daß es geringfügig kleiner als die Spaltbreite des Spaltes 6 ist, so daß die vorbeschriebenen Vorgänge nicht eintreten. Das Abstreifelement 8 weist vorzugsweise eine Breite von etwa 3 mm auf und sitzt in einer Nut 7 mit einer Tiefe von 4 mm.A stripping element made of an elastic material is preferably inserted, for example glued, into the groove 7. Hard rubber and plastic are suitable as materials for the stripping element 8. The stripping element 8 in the groove 7 protrudes slightly from the circular cylindrical surface of the ink fountain roller 3. The extent of this elevation should correspond approximately to the width of the gap 5. If it is slightly above, the relatively soft spacer 8 during operation, i. H. during the rotation of the ink fountain roller 3, removed by the relatively hard edge of the ink knife 2, so that an automatic adjustment of the part of the stripping element 8 protruding from the outer surface of the ink fountain roller 3 to the gap width of the gap 5 occurs. A further grinding of the stripping element 8 takes place in the gap 6 between the ink fountain roller 3 and the film roller 4, since, as already mentioned, this gap 6 is smaller than the gap 5. However, it is also possible to determine the protrusion dimension of the stripping element 8 in advance in such a way that it is slightly smaller than the gap width of the gap 6, so that the processes described above do not occur. The stripping element 8 preferably has a width of approximately 3 mm and is seated in a groove 7 with a depth of 4 mm.

Durch die Verwendung des Abstreifelementes 8 werden die sich in dem Bereich zwischen der Mantelfläche der Farbkastenwalze 3 und dem Anstellbereich des Farbmessers 2 ansammelnden Schmutzpartikel aus dem Farbkasten abgezogen und dem weiteren Farbkreislauf zugeführt, wo sie sich nicht mehr störend auswirken.By using the wiping element 8, the dirt particles accumulating in the area between the lateral surface of the ink fountain roller 3 and the setting area of the ink knife 2 are drawn out of the ink fountain and fed to the further color cycle, where they no longer have a disruptive effect.

Figur 3 zeigt eine andere Querschnittsform eines Abstreifelementes 10, das in einer Nut 9 an der Oberfläche der Farbkastenwalze 3 eingesetzt ist. Dieses Abstreifelement 10 weist in dem aus der Mantelfläche der Farbkastenwalze 3 herausragenden Bereich einen keilförmigen Querschnitt auf.FIG. 3 shows another cross-sectional shape of a stripping element 10 which is inserted in a groove 9 on the surface of the ink fountain roller 3. This stripping element 10 has a wedge-shaped cross section in the area protruding from the outer surface of the ink fountain roller 3.

In den Ausführungsbeispielen gemäß Figur 2 und 3 ist jeweils nur ein Abstreifelement 8 bzw. 10 dargestellt. Falls mit einem Abstreifelement in der Farbkastenwalze 3 nicht die gewünschte Reinigungswirkung erzielt wird, so können am Umfang der Farbkastenwalze 3 auch zwei oder mehrere derartige Abstreifelemente vorgesehen werden. Der Einsatz der Abstreifelemente 8, 10 in sich in Axialrichtung erstreckenden, schraubenförmig verlaufenden Nuten 7, 9 bietet eine ausreichende Fixierung und Lagepositionierung der Abstreifelemente 8, 10. Es ist jedoch auch möglich, ohne die Verwendung von Nuten in den Farbkastenwalzen Abstreifelemente mit der gewünschten Dicke unmittelbar auf die Mantelfläche der Farbkastenwalzen 3 aufzubringen, bspw. mit einem geeigneten Klebstoff aufzukleben.In the exemplary embodiments according to FIGS. 2 and 3, only one stripping element 8 or 10 is shown. If the desired cleaning effect is not achieved with a stripping element in the ink fountain roller 3, two or more such stripping elements can also be provided on the circumference of the ink fountain roller 3. The use of the stripping elements 8, 10 in the axially extending, helical grooves 7, 9 offers sufficient fixation and positioning of the stripping elements 8, 10. However, it is also possible to use stripping elements with the desired thickness without using grooves in the ink fountain rollers to be applied directly to the lateral surface of the ink fountain rollers 3, for example by means of a suitable adhesive.

Claims (7)

1. Duct roller for an inking unit of a rotary printing machine with an ink-carrying circular cylindrical surface, onto which a ductor blade can be set for regulating the ink and from which ink is conveyed to a further inking unit roller which can be set on this, having a device for removing particles of dirt present in the ink supply, characterised in that in order to remove the particles of dirt on the duct roller (3) collecting in the region of the gap (5) between the ductor blade (2) and the surface of the duct roller (3), there is arranged at least one stripping element (8, 10) extending over the length of the duct roller (3), the height of which element above the surface of the duct roller (3) corresponds approximately to the width of the gap (5).
2. Duct roller according to claim 1, characterised in that the stripping element (8, 10) is secured in a groove (7, 9) provided in the surface of the duct roller (3).
3. Duct roller according to claim 2, characterised in that the groove (7, 9) extends spirally.
4. Duct roller according to one of the preceding claims, characterised in that the stripping element (8) has a rectangular cross-section.
5. Duct roller according to one of claims 1 to 3, characterised in that the part of the stripping element (10) projecting over the surface of the duct roller (3) has a wedge-shaped cross-section.
6. Duct roller according to one of the preceding claims, characterised in that the stripping element (8, 10) is of hard rubber or synthetic material.
7. Duct roller according to one of the preceding claims, characterised in that the further inking unit roller (4) which can be set onto the duct roller (3) is a film roller.
EP83106858A 1982-08-13 1983-07-13 Duct roller for an inking unit of a rotary machine Expired EP0103103B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3230119A DE3230119C2 (en) 1982-08-13 1982-08-13 Ink fountain roller for an inking unit of a rotary printing press
DE3230119 1982-08-13

Publications (3)

Publication Number Publication Date
EP0103103A2 EP0103103A2 (en) 1984-03-21
EP0103103A3 EP0103103A3 (en) 1985-11-27
EP0103103B1 true EP0103103B1 (en) 1987-11-11

Family

ID=6170765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106858A Expired EP0103103B1 (en) 1982-08-13 1983-07-13 Duct roller for an inking unit of a rotary machine

Country Status (3)

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US (1) US4522124A (en)
EP (1) EP0103103B1 (en)
DE (2) DE3230119C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433942C1 (en) * 1984-09-15 1985-09-19 Albert-Frankenthal Ag, 6710 Frankenthal Ink fountain for a rotary printing press
DE3804204A1 (en) * 1988-02-11 1989-08-24 Heidelberger Druckmasch Ag FILM INKS FOR ROTATIONAL PRINTING MACHINES
DE102010051031A1 (en) * 2009-12-11 2011-06-16 Heidelberger Druckmaschinen Ag Inking system for printing machine, comprises ductor-roller, lifting roller, which contacts in certain rhythm with ductor-roller, and ink duct with set of dosing elements

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD35642A (en) *
US2404159A (en) * 1942-06-11 1946-07-16 Cottrell C B & Sons Co Transfer roller for ink distributions
DE1918987B2 (en) * 1969-04-15 1971-06-16 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach DUCTOR ROLLER FOR AN INKING UNIT OF PRINTING MACHINES
FR2397939A1 (en) * 1977-07-22 1979-02-16 Chambon Machines INKING DEVICE FOR BOLD INK PRINTING

Also Published As

Publication number Publication date
DE3230119A1 (en) 1984-02-16
EP0103103A2 (en) 1984-03-21
DE3374396D1 (en) 1987-12-17
US4522124A (en) 1985-06-11
DE3230119C2 (en) 1984-12-06
EP0103103A3 (en) 1985-11-27

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