EP0047504B1 - Ink fountain for printing presses - Google Patents

Ink fountain for printing presses Download PDF

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Publication number
EP0047504B1
EP0047504B1 EP81106929A EP81106929A EP0047504B1 EP 0047504 B1 EP0047504 B1 EP 0047504B1 EP 81106929 A EP81106929 A EP 81106929A EP 81106929 A EP81106929 A EP 81106929A EP 0047504 B1 EP0047504 B1 EP 0047504B1
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EP
European Patent Office
Prior art keywords
ink
ink fountain
longitudinal gap
metering elements
ink metering
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
EP81106929A
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German (de)
French (fr)
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EP0047504A1 (en
Inventor
Erich Georg Wieland
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 AG
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Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0047504A1 publication Critical patent/EP0047504A1/en
Application granted granted Critical
Publication of EP0047504B1 publication Critical patent/EP0047504B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L27/00—Inking arrangements or devices
    • B41L27/04—Ducts, containers, or supply devices or ink-level control devices
    • B41L27/06—Duct blades or like supply devices

Definitions

  • the invention relates to an ink fountain according to the preamble of claim 1.
  • Ink fountains for printing machines are generally known. From DE-OS 2814889 an ink fountain is known which contains an ink fountain roller coming into contact with printing ink and a plurality of laterally arranged side by side, in the longitudinal direction of the circumferential surface of the ink roller in direct contact with one another, held in the bottom of the ink fountain, pivoted, held ink metering elements, which with a pivot lever are positively connected, a controllable mechanism being provided in order to be able to set a gap formed by the individual ink metering elements and the surface of the ink fountain roller.
  • the ink guide surfaces of the ink fountain base and ink metering elements are always at an angle which is slightly above 90 °, which makes cleaning the ink fountain difficult.
  • a base plate of an ink fountain floor scrapes off the ink guide surface of the ink metering element when the ink metering element moves in the direction of “more ink”, experience has shown that it cannot be avoided that ink particles get under the base plate and negatively affect the smoothness of the ink metering element.
  • the invention has for its object to provide a pivotable ink metering element, whose one color guide surface with a color metering extension extends into a space of an ink fountain that can be filled with printing ink, in which a pivoting movement of the ink guide surfaces from ink metering elements to the ink fountain color guide surface is made possible.
  • an ink fountain floor 2 is provided, the inner bottom surface 3 of which is covered with printing ink when the ink fountain 1 is filled with a printing ink.
  • a ceramic-coated ink fountain roller 4 which is driven in a known manner, is immersed in the ink fountain 1. It forms a paint passage gap with a paint metering attachment 5 of a paint metering element 6.
  • the ink fountain base 2 expediently extends as an extension of the base surface 3 beyond the ink metering elements 6 as an end piece 7 with the end surface 8.
  • a longitudinal pit 9 is worked into the ink fountain base 2 from the base surface 3.
  • a left guide surface 12 of the longitudinal pit 9 collides with the base surface 3 at an angle a, which is preferably less than 90 °, but can also be 90 °.
  • An edge created at a collision point between the left guide surface 12 and the base surface 3 serves as a pivoting edge (line) 21 for the ink metering elements 6.
  • a right guide surface 11 runs parallel to the left guide surface 12 of the longitudinal pit 9, a base surface 10 of the longitudinal pit 9 runs at a distance « a and parallel to the bottom surface 3 of the ink fountain base 2.
  • Vertical openings 13 in the ink fountain base 2 open into the base surface 10 of the longitudinal pit 9 and extend over an entire length «b of the ink fountain base 2 covered with ink metering elements 6 at a distance of z. B. 30 mm apart.
  • a cross section of the openings 13 is so large that a pivot arm 17 which is positively connected to the horizontally extending ink metering element 6 can be moved sufficiently.
  • the swivel arm 17 carries out a preselectable swivel movement. For this purpose, it is provided in its lower part with an elongated hole 18 into which a crank pin 19 driven by an electric motor engages.
  • a swivel edge 21 of the swivel arm 17 lies on an intersection of the guide surface 12 with the bottom surface 3 of the ink fountain base 2.
  • the swivel edge 21 for the swivel arm 17 is also the swivel edge for the swivel arm 17 is also the swivel edge for the ink metering element 6.
  • the bottom surface 3 of the ink fountain base 2 continues in a color guide surface 22 of the ink metering element 6 without a groove or increase in the transition between the two surfaces 3; 22 bothers.
  • the ink guide surface 22 first takes a straight course, which then merges into a concave curvature which ends in an ink metering attachment 5.
  • a vertical surface 24 of the ink metering element 6 forms an angle ⁇ of approximately 90 ° with its ink guide surface 22 and ends in FIG a first support lug 26.
  • the support lug 26 projects approximately 1 mm beyond a curved rear surface 27 of the ink metering element 6.
  • a neck 28 of the swivel arm 17 opens into this rear surface 27.
  • the rear surface 27 ends in a second support shoulder 29. While the first support shoulder 26 is supported on the base surface 10, the second support shoulder 29 is supported on the right guide surface 11 of the longitudinal pit 9.
  • the support lugs 26, 29 each preferably extend over an entire length “c of the ink metering element 6 and form an angle y of approximately 80 ° with one another.
  • the support lugs 26, 29 can have a rectangular cross-section, their support surfaces 14, 15 as end faces should be as narrow as possible.
  • the support lugs 26, 29 can also be designed in the form of a cutting edge, with a straight face or with a round face.
  • An expansion bore 30 is made centrally to each opening 13 from the side facing away from the bottom surface 3 of the ink fountain 1.
  • a flat bore base 31 of the extension bore 30 forms a force application surface for a conical compression spring 32, which is attached to the pivot arm 17. It is clamped between the abutment surface - the bottom of the bore 31 - and the ends of a pin 33 projecting over the cross section of the pivot arm 17 and positively connected to the pivot arm 17.
  • the two support lugs 26, 29 and thus the ink metering element 6 are pressed against the by the compression spring 32 Base 10 or the right guide surface 11 of the longitudinal groove 9 drawn.
  • the seal against the ink fountain base 2 is carried out by pressing the edge of the sealing membrane 34 against the bottom of the bore 31 by means of the compression spring 32.
  • a narrow one is in a back 16 of the ink metering element 6, above the second support projection 29 .
  • Longitudinal groove 36 extending over the entire length «c of the ink metering element 6 is provided for receiving a first lateral edge 38 of an elastic sealing strip 37.
  • a second lateral edge 35 of the elastic sealing strip 37 is connected in a sealed manner to the end face 8 of the ink fountain base 2.
  • the sealing strip 37 extends in one piece over the entire length “b of the ink fountain base 2, that is to say over all ink metering elements 6 of an ink fountain 1 arranged next to one another.
  • each of the vertical surfaces 24 of the ink metering element 6 there is an axially parallel groove 39, which extends over the entire length “c” of the ink metering element 6, at a distance of about 1 mm from the ink guide surface 22. It serves to accommodate an elastic sealing cord 41, e.g. The sealing cord 41 extends in one piece over the entire length “b *. The dimensions of the sealing cord are such that in each operating position of the ink metering elements 6, the left guide surface 12 of the ink fountain base 2 against the vertical surface 24 of the ink metering element 6 is securely sealed.
  • a lubricant eg. B. fat
  • each color metering element 6 is provided with a through hole 44 in its center. It ends on both end faces 45, 46 in a lubrication channel 47, 48. These each run within the area boundary of the end faces 45, 46 and are approximately 10 mm long, 2 mm wide and 0.5 mm deep.
  • patent protection is applied for for an ink fountain for a printing press with an ink fountain roller that dips into the ink fountain and a large number of individually operable ink metering elements arranged side by side in close proximity to one another in an ink fountain floor, each of which is provided with a pivotable swivel arm.
  • ink metering elements form a changeable ink metering gap with a peripheral surface of the ink fountain roller, characterized in that ink metering elements (6) in addition to their respective ink guide surfaces (22) projecting into the ink fountain (1) and an ink metering attachment (5) entirely in a covered cavity (43) Ink fountain base (2) of the ink fountain (1) are pivotally arranged that the Cavity (43) is completely filled with a lubricant.
  • patent protection is applied for for a method for maintaining smooth movement of ink metering elements of a ink fountain of a printing press, several individually adjustable ink metering elements being arranged close to one another, characterized in that a longitudinal bore (44) in the ink metering elements (6) a lubricant is pressed between the end faces (45, 46) of immediately adjacent ink metering elements (6) and for a device for carrying out the method, characterized in that ink metering elements (6) are provided with a continuous longitudinal hole (44) that the longitudinal holes (44) all color metering elements (6) are connected to each other.

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

Description

Die Erfindung betrifft einen Farbkasten gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an ink fountain according to the preamble of claim 1.

Farbkästen für Druckmaschinen sind allgemein bekannt. Durch die DE-OS 2814889 ist ein Farbkasten bekannt, der eine mit Druckfarbe in Berührung kommende Farbkastenwalze und eine Vielzahl seitlich nebeneinander angeordneter, in Längsrichtung der Umfangsoberfläche der Farbwalze in direkter Berührung miteinander stehender, im Boden des Farbkastens schwenkbarer, gehalterter Farbdosierelemente enthält, die mit einem Schwenkhebel formschlüssig verbunden sind, wobei ein steuerbarer Mechanismus vorgesehen ist, um einen aus den einzelnen Farbdosierelementen und der Oberfläche der Farbkastenwalze gebildeten Spalt einstellen zu können.Ink fountains for printing machines are generally known. From DE-OS 2814889 an ink fountain is known which contains an ink fountain roller coming into contact with printing ink and a plurality of laterally arranged side by side, in the longitudinal direction of the circumferential surface of the ink roller in direct contact with one another, held in the bottom of the ink fountain, pivoted, held ink metering elements, which with a pivot lever are positively connected, a controllable mechanism being provided in order to be able to set a gap formed by the individual ink metering elements and the surface of the ink fountain roller.

Dabei ist es jedoch von Nachteil, daß die Farbführungsflächen von Farbkastenboden und Farbdosierelementen immer in einem Winkel stehen, der etwas über 90° beträgt, wodurch eine Reinigung des Farbkastens erschwert wird. Eine Bodenplatte eines Farbkastenbodens rakelt bei Bewegung des Farbdosierelementes in Richtung « Mehr Farbe Druckfarbe von der Farbführungsfläche des Farbdosierelementes ab, wobei sich erfahrungsgemäß nicht vermeiden läßt, daß Farbpartikel unter die Bodenplatte gelangen und die Leichtgängigkeit des Farbdosierelementes negativ beeinflussen können.However, it is disadvantageous that the ink guide surfaces of the ink fountain base and ink metering elements are always at an angle which is slightly above 90 °, which makes cleaning the ink fountain difficult. A base plate of an ink fountain floor scrapes off the ink guide surface of the ink metering element when the ink metering element moves in the direction of “more ink”, experience has shown that it cannot be avoided that ink particles get under the base plate and negatively affect the smoothness of the ink metering element.

Der Erfindung liegt die Aufgabe zugrunde, ein schwenkbares Farbdosierelement, dessen eine Farbführungsfläche mit einem Farbdosieransatz sich in einen mit Druckfarbe füllbaren Raum eines Farbkastens erstreckt, zu schaffen, bei dem eine Schwenkbewegung der Farbführungsflächen von Farbdosierelementen zu der Farbkasten-Farbführungsfläche ermöglicht wird.The invention has for its object to provide a pivotable ink metering element, whose one color guide surface with a color metering extension extends into a space of an ink fountain that can be filled with printing ink, in which a pivoting movement of the ink guide surfaces from ink metering elements to the ink fountain color guide surface is made possible.

Die Aufgabe wird durch den Gegenstand des kennzeichnenden Teils des Anspruchs 1 gelöst.The object is achieved by the subject matter of the characterizing part of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß zwischen den Farbführungsflächen von Farbdosierelement und Boden des Farbkastens ein bis 180° reichender Öffnungswinkel erreichbar ist. Hierdurch wird ein gründliches Säubern des Farbkastens erleichtert. Außerdem lassen sich Absolutbewegungen zwischen den gegen Farbdurchtritt abzudichtenden Flächen von Farbdosierelementen und Farbkastenboden je nach Maßnahme gänzlich oder soweit vermindern, daß das Dichtmittel zwischen diesen Flächen nicht, durch die Absolutbewegung verursacht, beschädigt wird.The advantages achievable with the invention consist in particular in that an opening angle reaching up to 180 ° can be achieved between the ink guide surfaces of the ink metering element and the bottom of the ink fountain. This makes thorough cleaning of the ink fountain easier. In addition, depending on the measure, absolute movements between the surfaces of ink metering elements to be sealed against ink penetration and the ink fountain base can be reduced entirely or to the extent that the sealant between these surfaces is not damaged by the absolute movement.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen :

  • Figur 1 eine Seitenansicht des erfindungsgemäßen Farbkastens, wobei der Farbkastenboden im Schnitt dargestellt ist, jedoch ohne seitliche Abschlußplatte,
  • Figur 2 eine Vorderansicht von Fig. 1, jedoch mit seitlicher Abschlußplatte.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it :
  • FIG. 1 shows a side view of the ink fountain according to the invention, the ink fountain base being shown in section, but without a lateral end plate,
  • Figure 2 is a front view of Fig. 1, but with a side end plate.

In einem Farbkasten 1 ist ein Farbkastenboden 2 vorgesehen, dessen innere Bodenfläche 3 bei mit einer Druckfarbe angefülltem Farbkasten 1 mit Druckfarbe bedeckt ist. In den Farbkasten 1 taucht eine in bekannter Weise angetriebene, keramikbeschichtete Farbkastenwalze 4 ein. Sie bildet mit einem Farbdosieransatz 5 eines Farbdosierelementes 6 einen Farbdurchtrittsspalt. Der Farbkastenboden 2 erstreckt sich zweckmäßigerweise als Verlängerung der Bodenfläche 3 über die Farbdosierelemente 6 als Endstück 7 mit der Endfläche 8 hinaus. In den Farbkastenboden 2 ist von der Bodenfläche 3 aus eine Längsgrube 9 eingearbeitet. Sie hat vorzugsweise rautenförmigen Querschnitt und verläuft achsparallel zu einer Rotationsachse der Farbkastenwalze 4 und in der Nähe der größten Annäherung von Farbkastenwalze 4 und Farbkastenboden 2. Eine linke Führungsfläche 12 der Längsgrube 9 stößt mit der Bodenfläche 3 unter einem Winkel a zusammen, der vorzugsweise kleiner als 90° sein, jedoch auch 90° betragen kann. Eine an einer Zusammenstoßstelle von linker Führungsfläche 12 und Bodenfläche 3 entstehende Kante dient als Schwenkkante (-linie) 21 für die Farbdosierelemente 6. Eine rechte Führungsfläche 11 verläuft parallel zur linken Führungsfläche 12 der Längsgrube 9, eine Grundfläche 10 der Längsgrube 9 verläuft im Abstand « a und parallel zur Bodenfläche 3 des Farbkastenbodens 2. In die Grundfläche 10 der Längsgrube 9 münden vertikale Durchbrüche 13 im Farbkastenboden 2, die über eine gesamte Länge « b des mit Farbdosierelementen 6 belegten Farbkastenbodens 2 im Abstand von z. B. 30 mm voneinander angeordnet sind. Ein Querschnitt der Durchbrüche 13 ist dabei so groß, daß ein mit dem sich horizontal erstreckenden Farbdosierelement 6 formschlüssig verbundener Verschwenkarm 17 genügend bewegbar ist. Der Verschwenkarm 17 führt eine vorwählbare Verschwenkbewegung aus. Hierzu ist er in seinem unteren Teil mit einem Langloch 18 versehen, in das ein von einem Elektromotor angetriebener Kurbelzapfen 19 eingreift. Eine Schwenkkante 21 des Verschwenkarmes 17 liegt auf einem Schnittpunkt der Führungsfläche 12 mit der Bodenfläche 3 des Farbkastenbodens 2. Die Schwenkkante 21 für den Verschwenkarm 17 ist gleichzeitig die Schwenkkante für den Verschwenkarm 17 ist gleichzeitig die Schwenkkante für das Farbdosierelement 6. Die Bodenfläche 3 des Farbkastenbodens 2 setzt sich in einer Farbführungsfläche 22 des Farbdosierelementes 6 fort, ohne daß eine Nut oder Erhöhung den Übergang zwischen beiden Flächen 3 ; 22 stört.In an ink fountain 1, an ink fountain floor 2 is provided, the inner bottom surface 3 of which is covered with printing ink when the ink fountain 1 is filled with a printing ink. A ceramic-coated ink fountain roller 4, which is driven in a known manner, is immersed in the ink fountain 1. It forms a paint passage gap with a paint metering attachment 5 of a paint metering element 6. The ink fountain base 2 expediently extends as an extension of the base surface 3 beyond the ink metering elements 6 as an end piece 7 with the end surface 8. A longitudinal pit 9 is worked into the ink fountain base 2 from the base surface 3. It preferably has a diamond-shaped cross-section and runs axially parallel to an axis of rotation of the ink fountain roller 4 and in the vicinity of the greatest approximation of ink fountain roller 4 and ink fountain base 2. A left guide surface 12 of the longitudinal pit 9 collides with the base surface 3 at an angle a, which is preferably less than 90 °, but can also be 90 °. An edge created at a collision point between the left guide surface 12 and the base surface 3 serves as a pivoting edge (line) 21 for the ink metering elements 6. A right guide surface 11 runs parallel to the left guide surface 12 of the longitudinal pit 9, a base surface 10 of the longitudinal pit 9 runs at a distance « a and parallel to the bottom surface 3 of the ink fountain base 2. Vertical openings 13 in the ink fountain base 2 open into the base surface 10 of the longitudinal pit 9 and extend over an entire length «b of the ink fountain base 2 covered with ink metering elements 6 at a distance of z. B. 30 mm apart. A cross section of the openings 13 is so large that a pivot arm 17 which is positively connected to the horizontally extending ink metering element 6 can be moved sufficiently. The swivel arm 17 carries out a preselectable swivel movement. For this purpose, it is provided in its lower part with an elongated hole 18 into which a crank pin 19 driven by an electric motor engages. A swivel edge 21 of the swivel arm 17 lies on an intersection of the guide surface 12 with the bottom surface 3 of the ink fountain base 2. The swivel edge 21 for the swivel arm 17 is also the swivel edge for the swivel arm 17 is also the swivel edge for the ink metering element 6. The bottom surface 3 of the ink fountain base 2 continues in a color guide surface 22 of the ink metering element 6 without a groove or increase in the transition between the two surfaces 3; 22 bothers.

Die Farbführungsfläche 22 nimmt zuerst einen geraden Verlauf, der dann in eine konkave Krümmung übergeht, die in einen Farbdosieransatz 5 endet. Eine Vertikalfläche 24 des Farbdosierelementes 6 bildet mit dessen Farbführungsfläche 22 einen Winkel β von ca. 90° und endet in einen ersten Stützansatz 26. Der Stützansatz 26 steht ca. 1 mm über eine gekrümmte Rückfläche 27 des Farbdosierelementes 6 hinaus. In diese Rückfläche 27 mündet ein Hals 28 des Verschwenkarmes 17. Die Rückfläche 27 endet in einen zweiten Stützansatz 29. Während sich der erste Stützansatz 26 auf der Grundfläche 10 abstützt, stützt sich der zweite Stützansatz 29 auf der rechten Führungsfläche 11 der Längsgrube 9 ab. Die Stützansätze 26, 29 erstrecken sich jeweils vorzugsweise über eine gesamte Länge « c des Farbdosierelementes 6 und schließen miteinander einen Winkel y von ca. 80° ein. Die Stützansätze 26, 29 können rechteckigen Querschnitt aufweisen, wobei ihre Stützflächen 14, 15 als Stirnseiten möglichst schmal sein sollten. Jedoch können die Stützansätze 26, 29 auch schneidenförmig, geradstirnig oder auch rundstirnig ausgeführt sein.The ink guide surface 22 first takes a straight course, which then merges into a concave curvature which ends in an ink metering attachment 5. A vertical surface 24 of the ink metering element 6 forms an angle β of approximately 90 ° with its ink guide surface 22 and ends in FIG a first support lug 26. The support lug 26 projects approximately 1 mm beyond a curved rear surface 27 of the ink metering element 6. A neck 28 of the swivel arm 17 opens into this rear surface 27. The rear surface 27 ends in a second support shoulder 29. While the first support shoulder 26 is supported on the base surface 10, the second support shoulder 29 is supported on the right guide surface 11 of the longitudinal pit 9. The support lugs 26, 29 each preferably extend over an entire length “c of the ink metering element 6 and form an angle y of approximately 80 ° with one another. The support lugs 26, 29 can have a rectangular cross-section, their support surfaces 14, 15 as end faces should be as narrow as possible. However, the support lugs 26, 29 can also be designed in the form of a cutting edge, with a straight face or with a round face.

Zentrisch zu jedem Durchbruch 13 ist von der der Bodenfläche 3 des Farbkasten 1 abgewandten Seite her eine Erweiterungsbohrung 30 angelegt. Ein planer Bohrungsgrund 31 der Erweiterungsbohrung 30 bildet eine Kraftangriffsfläche für eine kegelige Druckfeder 32, die auf den Verschwenkarm 17 aufgesteckt ist. Sie ist eingespannt zwischen der Widerlagerfläche - dem Bohrungsgrund 31 - und den Enden eines über den Querschnitt des Verschwenkarmes 17 herausragenden und mit dem Verschwenkarm 17 formschlüssig verbundenen Bolzens 33. Durch die Druckfeder 32 werden die beiden Stützansätze 26, 29 und damit das Farbdosierelement 6 gegen die Grundfläche 10 bzw. die rechte Führungsfläche 11 der Längsnut 9 gezogen.An expansion bore 30 is made centrally to each opening 13 from the side facing away from the bottom surface 3 of the ink fountain 1. A flat bore base 31 of the extension bore 30 forms a force application surface for a conical compression spring 32, which is attached to the pivot arm 17. It is clamped between the abutment surface - the bottom of the bore 31 - and the ends of a pin 33 projecting over the cross section of the pivot arm 17 and positively connected to the pivot arm 17. The two support lugs 26, 29 and thus the ink metering element 6 are pressed against the by the compression spring 32 Base 10 or the right guide surface 11 of the longitudinal groove 9 drawn.

Zwischen dem Bohrungsgrund 31 und der Druckfeder 32 ist eine elastische, z. B. gewölbte Dichtungsmembran 34 eingelegt.Between the bottom of the bore 31 and the compression spring 32 is an elastic, for. B. arched sealing membrane 34 is inserted.

Sie umschließt den Verschwenkarm 17 absolut dicht. Die Dichtung gegen den Farbkastenboden 2 erfolgt durch das Anpreßen des Randes der Dichtungsmembran 34 an den Bohrungsgrund 31 mittels der Druckfeder 32. Zur Abdichtung des Durchbruches 13 zur Farbkastenwalze 4 hin ist in einem Rücken 16 des Farbdosierelementes 6, oberhalb des zweiten Stützansatzes 29, eine schmale, sich über die gesamte Länge « c des Farbdosierelementes 6 erstreckende Längsnut 36 zur Aufnahme eines ersten seitlichen Randes 38 eines elastischen Dichtungsstreifens 37 vorgesehen. Ein zweiter seitlicher Rand 35 des elastischen Dichtungsstreifens 37 ist mit der Endfläche 8 des Farbkastenbodens 2 abgedichtet verbunden. Der Dichtungsstreifen 37 erstreckt sich in einem Stück über die gesamte Länge « b des Farbkastenbodens 2, also über sämtliche nebeneinander angeordneten Farbdosierelemente 6 eines Farbkastens 1.It encloses the pivot arm 17 absolutely tight. The seal against the ink fountain base 2 is carried out by pressing the edge of the sealing membrane 34 against the bottom of the bore 31 by means of the compression spring 32. To seal the opening 13 to the ink fountain roller 4, a narrow one is in a back 16 of the ink metering element 6, above the second support projection 29 , Longitudinal groove 36 extending over the entire length «c of the ink metering element 6 is provided for receiving a first lateral edge 38 of an elastic sealing strip 37. A second lateral edge 35 of the elastic sealing strip 37 is connected in a sealed manner to the end face 8 of the ink fountain base 2. The sealing strip 37 extends in one piece over the entire length “b of the ink fountain base 2, that is to say over all ink metering elements 6 of an ink fountain 1 arranged next to one another.

In jeweils der Vertikalfläche 24 des Farbdosierelementes 6 ist in ca. einem Abstand von 1 mm von der Farbführungsfläche 22 eine achsparallele, sich über die gesamte Länge « c " des Farbdosierelementes 6 erstreckende Nut 39 angebracht. Sie dient zur Aufnahme einer elastischen Dichtungsschnur 41, z. B. rechteckigen Querschnitts. Die Dichtungsschnur 41 erstreckt sich in einem Stück über die gesamte Länge «b*. Sie ist in ihren Abmessungen so gewählt, daß in jeder Betriebsstellung der Farbdosierelemente 6 die linke Führungsfläche 12 des Farbkastenbodens 2 gegen die Vertikalfläche 24 des Farbdosierelementes 6 sicher abgedichtet ist.In each of the vertical surfaces 24 of the ink metering element 6 there is an axially parallel groove 39, which extends over the entire length “c” of the ink metering element 6, at a distance of about 1 mm from the ink guide surface 22. It serves to accommodate an elastic sealing cord 41, e.g. The sealing cord 41 extends in one piece over the entire length “b *. The dimensions of the sealing cord are such that in each operating position of the ink metering elements 6, the left guide surface 12 of the ink fountain base 2 against the vertical surface 24 of the ink metering element 6 is securely sealed.

Ein von dem Dichtungsstreifen 37, einer rechten Wandfläche 40 des Durchbruches 13, der Dichtungsmembran 34, einer linken Wandfläche 42 des Durchbruches 13, der Grundfläche 10, der linken Führungsfläche 12, der Dichtungsschnur 41 und den in die Längsgrube 9 gewandten Flächen 24, 27 des Farbdosierelementes 6 und zwei seitlichen Abschlußplatten 49, 50 abgegrenzter, nach außen hin abgedichteter, sich über die gesamte Länge «b• erstreckender Schmiermittelraum 43 ist völlig mit einem Schmiermittel, z. B. Fett, ausgefüllt. Hierdurch wird verhindert, daß Druckfarbe oder Schmutz in den Schmiermittelraum 43 eindringt und die Leichtgängigkeit der Farbdosierelemente 6 beeinträchtigt.One of the sealing strip 37, a right wall surface 40 of the opening 13, the sealing membrane 34, a left wall surface 42 of the opening 13, the base surface 10, the left guide surface 12, the sealing cord 41 and the surfaces 24, 27 of the facing into the longitudinal pit 9 Paint metering element 6 and two side end plates 49, 50 delimited, sealed from the outside, extending over the entire length «b • lubricant chamber 43 is completely with a lubricant, eg. B. fat, filled out. This prevents printing ink or dirt from entering the lubricant chamber 43 and impairing the smooth operation of the ink metering elements 6.

Aus dem gleichen Grunde ist jedes Farbdosierelement 6 in seinem Zentrum mit einer durchgehenden Bohrung 44 versehen. Sie endet auf beiden Stirnseiten 45, 46 in je einer Schmierrinne 47, 48. Diese verläufen jeweils innerhalb der Flächenumgrenzung der Stirnseiten 45, 46 und sind ca. 10 mm lang, 2 mm breit und 0,5 mm tief. An der seitlichen Abschlußplatte 49 ist ein Schmiernippel 20 vorhanden, über den Fett in die Bohrung 44 der Farbdosierelemente 6 eingepreßt werden kann. An der zweiten seitlichen Abschlußplatte 50 ist ein verschließ- und öffenbarer Auslaßnippel 25 vorhanden, über den verbrauchtes Fett herausgedrückt werden kann. Da sämtliche Bohrungen 44 der Farbdosierelemente 6 miteinander in Verbindung stehen, ist es möglich, Fett in der Weise einzupressen, daß es zwischen den Stirnseiten 45, 46 benachbarter Farbdosierelemente 6 herausgedrückt wird und so Schmutz und Farbpigmente, die sich dort angesammelt haben könnten, mit herausdrückt.For the same reason, each color metering element 6 is provided with a through hole 44 in its center. It ends on both end faces 45, 46 in a lubrication channel 47, 48. These each run within the area boundary of the end faces 45, 46 and are approximately 10 mm long, 2 mm wide and 0.5 mm deep. On the side end plate 49 there is a grease nipple 20 through which grease can be pressed into the bore 44 of the ink metering elements 6. On the second side end plate 50 there is a closable and openable outlet nipple 25, via which the used grease can be pressed out. Since all of the bores 44 of the color metering elements 6 are connected to one another, it is possible to press in grease in such a way that it is pressed out between the end faces 45, 46 of adjacent color metering elements 6 and thus also pushes out dirt and color pigments that could have accumulated there .

Die gleiche Beschreibung dieser Patentanmeldung liegt den europäischen Patentanmeldungen Nr. 81106932.7 (EP-A-0 049 370) und 81106933.5 (EP-A-0 048 840) zugrunde.The same description of this patent application is based on European patent applications No. 81106932.7 (EP-A-0 049 370) and 81106933.5 (EP-A-0 048 840).

In der EP-Patentanmeldung Nr. 81106932.7 wird Patentschutz beantragt für einen Farbkasten für eine Druckmaschine mit einer in den Farbkasten eintauchenden Farbkastenwalze und einer Vielzahl seitlich dicht bei dicht nebeneinander in einem Farbkastenboden angeordneter, einzeln betätigbarer Farbdosierelemente, die jeweils mit einem verschwenkbaren Verschwenkarm versehen sind, wobei die Farbdosierelemente mit einer Umfangsoberfläche der Farbkastenwalze einen veränderbaren Farbdosierspalt bilden, dadurch gekennzeichnet, daß Farbdosierelemente (6) außer ihren jeweils in den Farbkasten (1) ragenden Farbführungsflächen (22) und einem Farbdosieransatz (5) gänzlich in einem abgedeckten Hohlraum (43) eines Farbkastenbodens (2) des Farbkastens (1) schwenkbar angeordnet sind, daß der Hohlraum (43) völlig mit einem Schmiermittel gefüllt ist.In patent application No. 81106932.7, patent protection is applied for for an ink fountain for a printing press with an ink fountain roller that dips into the ink fountain and a large number of individually operable ink metering elements arranged side by side in close proximity to one another in an ink fountain floor, each of which is provided with a pivotable swivel arm. wherein the ink metering elements form a changeable ink metering gap with a peripheral surface of the ink fountain roller, characterized in that ink metering elements (6) in addition to their respective ink guide surfaces (22) projecting into the ink fountain (1) and an ink metering attachment (5) entirely in a covered cavity (43) Ink fountain base (2) of the ink fountain (1) are pivotally arranged that the Cavity (43) is completely filled with a lubricant.

In der EP-Patentanmeldung Nr. 81106933.5 wird Patentschutz beantragt für ein Verfahren zur Erhaltung einer Leichtgängigkeit von Farbdosierelementen eines Farbkastens einer Druckmaschine, wobei mehrere einzeln verstellbare Farbdosierelemente dicht bei dicht nebeneinander angeordnet sind, dadurch gekennzeichnet, daß über eine Längsbohrung (44) in den Farbdosierelementen (6) ein Schmiermittel zwischen Stirnseiten (45, 46) unmittelbar benachbarter Farbdosierelemente (6) gepreßt wird und für eine Einrichtung zur Durchführung des Verfahrens, dadurch gekennzeichnet, daß Farbdosierelemente (6) mit einer durchgehenden Längsbohrung (44) vorgesehen sind, daß die Längsbohrungen (44) sämtlicher Farbdosierelemente (6) miteinander in Verbindung stehen.In patent application No. 81106933.5, patent protection is applied for for a method for maintaining smooth movement of ink metering elements of a ink fountain of a printing press, several individually adjustable ink metering elements being arranged close to one another, characterized in that a longitudinal bore (44) in the ink metering elements (6) a lubricant is pressed between the end faces (45, 46) of immediately adjacent ink metering elements (6) and for a device for carrying out the method, characterized in that ink metering elements (6) are provided with a continuous longitudinal hole (44) that the longitudinal holes (44) all color metering elements (6) are connected to each other.

Claims (5)

1. An ink fountain for a printing press comprising an ink fountain roller (4) plunging into the ink fountain (1) and a plurality of individually operable ink metering elements (6) disposed laterally close together side by side in an ink fountain bottom (2), each provided with a pivotable pivot arm (17), the ink metering elements (6) forming with a peripheral surface of the ink fountain roller (4) an adjustable ink metering slot, characterised in that a longitudinal gap (9) with parallelogram- shaped cross-section axially parallel to the ink fountain roller (4) is worked into the ink fountain bottom (2) with a bottom surface (3), that a base surface (10) of the longitudinal gap (9) extends parallel to the bottom surface (3) of the ink fountain bottom (2), that a left guiding surface (12) and the bottom surface (3) form a pivoting edge (21) at their abutting edge for the ink metering elements (6) disposed side by side and enclose an angle (a) of a 90°, that a right guiding surface (11) is provided in the longitudinal gap (9), that a periphery or portions of the periphery (26, 29) of the ink metering elements (6) disposed in the longitudinal gap (9) are in contact with the base surface (10) and the guiding surface (11).
2. An ink fountain according to claim 1, characterised in that each of the ink metering elements (6) is rigidly secured to a pivotable pivot arm (17).
3. An ink fountain according to claim 1, characterised in that a sealing means (41) is provided between the left guiding surface (12) of the longitudinal gap (9) and a surface (24) of the ink metering element (6) lying directly opposite this guiding surface (12).
4. An ink fountain according to claim 2, characterised in that portions of the periphery of the ink metering element (6) are designed as carrier extensions (26, 29), that a first carrier extension (26) rests on the base surface (10) and a second carrier extension (29) rests on the right guiding surface (11) of the longitudinal gap (9).
5. An ink fountain according to claim 2, characterised in that a compression spring (32) freely enclosing the pivot arm (17) is provided whose counter bearing lies on the ink fountain bottom (2) and whose point of power application lies on the pivot arm (17) itself.
EP81106929A 1980-09-10 1981-09-04 Ink fountain for printing presses Expired EP0047504B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3033997 1980-09-10
DE19803033997 DE3033997A1 (en) 1980-09-10 1980-09-10 INKBOX FOR PRINTING MACHINES

Publications (2)

Publication Number Publication Date
EP0047504A1 EP0047504A1 (en) 1982-03-17
EP0047504B1 true EP0047504B1 (en) 1984-11-28

Family

ID=6111552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106929A Expired EP0047504B1 (en) 1980-09-10 1981-09-04 Ink fountain for printing presses

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Country Link
US (1) US4392428A (en)
EP (1) EP0047504B1 (en)
JP (1) JPS5777577A (en)
DE (1) DE3033997A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324950C2 (en) * 1983-07-11 1986-04-03 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Ink metering device for a printing machine
FR2579136B1 (en) * 1985-03-22 1988-03-11 Chambon Machines INK TO INDIVIDUALLY ADJUSTABLE DOSER SEGMENTS FOR A PRINTER
DE4004597A1 (en) * 1990-02-12 1991-08-14 Bundesrep Deutschland Inking duct for printing machine - is divided laterally into separate chambers by flexible plastic plates parallel to sides with curved edges held against roller by magnets
DE9109787U1 (en) * 1991-08-07 1991-09-26 J.M. Voith Gmbh, 7920 Heidenheim Clamping device for blades, especially in coating machines
JP4892728B2 (en) * 2006-11-20 2012-03-07 独立行政法人 国立印刷局 Ink supply device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639293C (en) * 1936-12-02 Richard Lehmann Inking unit for printing machines
US1742787A (en) * 1928-08-21 1930-01-07 Commercial Iron Works Ink fountain for printing presses
DE958386C (en) * 1954-08-18 1957-02-21 Kohlbach Druckereimaschinen Dr Ink fountain with ink fountain roller and ink knife
US3134325A (en) * 1962-01-16 1964-05-26 Wood Newspaper Mach Corp Ink adjusting mechanism
DE2460116C3 (en) * 1974-12-19 1979-09-06 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Ink box for printing machines
DE2530109C3 (en) * 1975-07-05 1978-05-03 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Inking unit for printing machines
US4058058A (en) * 1976-02-26 1977-11-15 George Hantscho Company, Inc. Ink fountain for printing presses
US4170177A (en) * 1977-04-07 1979-10-09 Toshiba Kikai Kabushiki Kaisha Printing machine inking device with plurality of cam levers

Also Published As

Publication number Publication date
US4392428A (en) 1983-07-12
DE3033997A1 (en) 1982-04-15
JPS5777577A (en) 1982-05-14
EP0047504A1 (en) 1982-03-17
JPH035989B2 (en) 1991-01-28
DE3033997C2 (en) 1987-10-01

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