EP3539776B1 - Seal element - Google Patents

Seal element Download PDF

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Publication number
EP3539776B1
EP3539776B1 EP19162660.5A EP19162660A EP3539776B1 EP 3539776 B1 EP3539776 B1 EP 3539776B1 EP 19162660 A EP19162660 A EP 19162660A EP 3539776 B1 EP3539776 B1 EP 3539776B1
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EP
European Patent Office
Prior art keywords
sealing
sealing surface
element according
sealing element
recess
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EP19162660.5A
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German (de)
French (fr)
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EP3539776A1 (en
Inventor
Ralf WILLUTZKI
Sven WILLUTZKI
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Wigutec Gummitechnologie & Co KG GmbH
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Wigutec Gummitechnologie & Co KG GmbH
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Publication of EP3539776A1 publication Critical patent/EP3539776A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/027—Ink rail devices for inking ink rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing

Definitions

  • the present invention relates to a sealing element for the frontal sealing of a liquid-storing chamber, in particular a doctor blade chamber, against a rotating roller, in particular an anilox roller, with a sealing body of cuboid basic shape with two opposing side surfaces and two opposing end surfaces, which defines a longitudinal direction and on its upper side has a sealing surface which extends between the side surfaces, is concavely curved inwardly along the longitudinal direction, in particular in the shape of a cylinder segment, for bearing on the rotating roller.
  • Such sealing elements are known in the prior art in different embodiments. They are used in particular to seal the end of the ink chambers, also called doctor blade chambers, of rotary printing machines and, in particular, flexographic printing machines. A liquid printing ink is applied via such an inking or doctor blade chamber to a rotating inking or printing roller, which can in particular be designed as an anilox roller.
  • a doctor blade chamber has an elongated housing which is aligned parallel to the printing roller and has an interior space which is open to the printing roller and which is filled with ink during the printing operation.
  • Two doctor blades are attached to the housing in such a way that they partially cover the inner space over the length of the housing at the edge. They protrude beyond the housing wall and have a defined and optionally adjustable setting angle to the printing roller.
  • a sealing element of the type mentioned is from EP 2 930 025 A1 known.
  • This sealing element has a sealing body of cuboid basic shape, which has two opposite side surfaces, which run in the longitudinal direction of the sealing body, and two opposite end faces.
  • a sealing surface On the upper side of the sealing body, a sealing surface is provided which has a concavely inwardly curved sealing surface section extending between the side surfaces, that is to say over the entire width of the sealing body, for contact with a rotating pressure roller.
  • the inwardly curved sealing surface section is designed in the manner of a cylinder segment which is oriented transversely to the longitudinal direction of the sealing body, so that the curvature of the sealing surface section runs in the longitudinal direction.
  • outer sealing surface sections are provided on which the doctor blades come to rest during operation. These outer sealing surface sections are designed as flat surfaces which, starting from the concave sealing surface section, slope towards the end faces of the sealing body.
  • a sealing element for the frontal sealing of a doctor blade chamber against a rotating roller is previously known.
  • This has a sealing body with two opposite side surfaces and opposite end surfaces.
  • Two sealing lips are formed on the upper side, which are provided for contact with a rotating roller.
  • the sealing lips are used for linear contact with a rotating roller. Even if such a structure has proven itself in principle, sharing it is viewed as disadvantageous in that the sealing element is subject to relatively high wear due to the merely linear contact with the rotating roller.
  • a similar sealing element is also from the EP 2 425 972 A2 previously known.
  • a channel-shaped recess is formed in the sealing surface, which extends into the sealing body in its longitudinal direction at least over the entire length of the concave sealing surface section and divides the concave sealing section into two web-shaped partial surfaces, which along the recess on opposite sides Pages from this run.
  • the sealing surface is thus in its longitudinal direction by a straight, channel-shaped recess, which is preferably in the transverse direction of the sealing body, viewed centrally, is formed in the sealing body, divided into two web-shaped partial surfaces.
  • the channel-shaped recess reduces the total area of the concave sealing section, with which the sealing element comes into contact with a printing or ink roller, with the result that the surface pressure on these web-shaped partial surfaces increases compared to a sealing surface without a channel-shaped recess, so that a secure contact between the sealing element and the inking roller is ensured.
  • the channel-shaped recess increases the flexibility of the sealing body in the area of the concave sealing surface section.
  • paint can collect in the channel-shaped recess, which forms a type of lubricating film and thus contributes to self-lubrication between the sealing element and the inking roller.
  • the sealing surface viewed in the longitudinal direction, can have outer sealing surface sections positioned on opposite sides of the concave sealing surface section and in particular adjoining them, on which the doctor blades come to rest during operation.
  • These outer sealing surface sections are designed as flat surfaces which, starting from the concave sealing surface section, slope towards the end faces of the sealing body. In such a configuration, the channel-like recess can extend into the outer sealing surface sections.
  • the channel-shaped recess has a V-shaped cross section which, starting from the sealing surface, runs into the sealing body.
  • a sealing lip protrudes upward from the sealing surface, along the outer edge, in particular along the entire outer edge of the sealing surface and preferably flush with the side surfaces and end surfaces of the sealing body.
  • the circumferential sealing lip serves to create a secure seal for the ink chamber when the ink chamber is not yet pressed against the ink roller with full pressure. It also prevents paint that collects in the channel-shaped recess and contributes to self-lubrication from escaping.
  • a sealing lip section of the sealing lip is preferably formed in each case, which connects the sealing lip sections of the sealing lip running along the side surfaces to one another. It is preferably provided that the two sealing lip sections, which connect the sealing lip sections running along the side surfaces, each have a V-like structure, the V-tips each being adjacent to an axial end of the channel-shaped recess on the sealing surface, in particular on the outer one Sealing surface portions, are positioned and facing away from one another, and the free ends of the sealing lip portions are connected to the sealing lip portions extending along the side surfaces.
  • the opening angle of the V-shaped sealing lip sections is at least 60 ° and at most 120 °, preferably 90 °.
  • the V-shaped sealing lip sections serve to improve the support of the doctor blades coming into contact with them. They also serve to seal the channel-shaped recess against loss of paint that has collected in the recess.
  • the sealing lips preferably have a height between 0.2 mm and 1.5 mm, in particular 0.5 to 1 mm and preferably 0.8 mm.
  • the sealing body consists of a vulcanizable material, at least in the area of the sealing surface, and a sliding material is vulcanized into the sealing surface.
  • a sliding material is vulcanized into the sealing surface.
  • the sliding material can advantageously comprise or consist of polytetrafluoroethylene (PTFE).
  • PTFE polytetrafluoroethylene
  • PTFE has high abrasion resistance and thermal conductivity as well as a very low coefficient of sliding friction.
  • the sealing body can consist of an elastic solid material, in particular of rubber or caoutchouc.
  • the sealing body comprises a base body and a molded part, the base body and the molded part being firmly connected to one another, in particular glued.
  • the base body and the molded part can be positively connected to one another.
  • at least one recess is formed in the upper side of the base body, into which a corresponding projection protruding from the underside of the molded part engages in order to positively connect the molded part to the base body and position it thereon.
  • the recesses and the corresponding projection preferably extend over the entire width of the base body.
  • the base body is advantageously made of an elastic material, in particular a foamed material.
  • the two-part construction of the sealing element from a base body and a molded part, on which the sealing surface is arranged, makes it possible to select a material that is optimal with regard to the desired functions of resistance and heat conduction for the molded part.
  • the molded part preferably has a lower elasticity than the base body.
  • the abrasion on the sealing surface of the molded part - even without vulcanized sliding material - is significantly reduced compared to the elastic material of the base body.
  • this configuration is particularly superior to solutions that directly protect the elastic material of the base body from abrasion and overheating.
  • the molded part can consist of rubber or rubber. However, other vulcanizable materials can also be used.
  • the sealing element has a sealing body 1 of cuboid basic shape with two mutually opposite side surfaces and two mutually opposite end surfaces.
  • the sealing body defines a longitudinal direction that is specified by the side surfaces.
  • the sealing body 1 On its upper side, the sealing body 1 has a sealing surface which has a central sealing surface section 2 for contact with a rotating inking roller and has a shape corresponding to this inking roller.
  • the central sealing surface section 2 is designed to be concave inward and has the shape of a cylinder jacket segment which extends transversely to the longitudinal direction of the sealing body 1 over its entire width.
  • the concave bulge runs along the longitudinal direction of the sealing body 1.
  • the sealing surface also has, viewed in the longitudinal direction, positioned on opposite sides of the concave sealing surface section 2 and adjoining these outer sealing surface sections 3, on which doctor blades come to rest during operation.
  • the outer sealing surface sections 3 are designed as flat surfaces which, starting from the concave sealing surface section 2, slope towards the end faces of the sealing body 1, so that the sealing body 1 is in the area of the end faces has a lower height than in the area of the central, concave sealing surface section 2.
  • a channel-shaped recess 4 is formed, which extends in a straight line in the longitudinal direction of the sealing body over the entire length of the concave sealing surface section 2 into the outer sealing surface sections 3 and the sealing surface, ie the concave sealing surface section 2 and the outer sealing surface section 3 in two web-shaped Sub-areas 2a, 2b, 3a, 3b, which run along the recess 4 on opposite sides of the latter.
  • the channel-shaped recess 4 viewed in the transverse direction of the sealing element, runs centrally from the sealing body 1, so that the web-shaped partial surfaces 2a, 2b have a consistent, consistent width.
  • the sealing surface is reduced with the result that, with constant contact pressure on the inking roller, the surface pressure in the web-shaped partial surfaces 2a, 2b, 3a, 3b is increased and thus a more reliable System on the inking roller is guaranteed.
  • paint can collect in the channel-shaped recess 4, which forms a type of lubricating film and thus contributes to self-lubrication between the sealing element and the inking roller.
  • the channel-shaped recess 4 increases the flexibility of the sealing element, which also contributes to an optimal seal.
  • the sealing element has a sealing lip 5 which protrudes upward from the sealing surface and extends along the entire outer Extends the edge of the sealing surface and correspondingly has two sealing lip sections 5a running along the side surfaces and two sealing lip sections 5b running along the end faces.
  • the sealing lip 5 has a height of approximately 0.8 mm and is flush with the side surfaces and end surfaces of the sealing body 1.
  • a sealing lip section 5c of the sealing lip 5 is formed, which connects the sealing lip sections 5a of the sealing lip 5 running along the side surfaces to one another.
  • the two sealing lip sections 5c each have a V-like structure, the V-tips each being positioned adjacent to an axial end of the channel-shaped recess 4 on the outer sealing surface sections 3 and facing away from one another and the free ends of the sealing lip sections with the ones running along the side surfaces Sealing lip portions 5a are connected.
  • the opening ring of the V-shaped sealing lip sections 5c is approximately 90 °.
  • the sealing body 1 consists of a vulcanizable material in the area of the sealing surface, in which a sliding material 6, which preferably consists or contains polytetrafluoroethylene (PTFE), is vulcanized.
  • a sliding material 6 which preferably consists or contains polytetrafluoroethylene (PTFE)
  • the sliding material 6 is provided in the area of the concave sealing surface section 2 and an adjacent part of the outer sealing surface sections 3.
  • the sealing surface has high abrasion and heat resistance as well as high thermal conductivity, which results in high wear resistance.
  • the penetration depth of the vulcanized sliding material into the sealing surface is 0.2 mm, in particular 0.3 mm, and is thus significantly greater than the thickness of conventional coatings.
  • the sealing body 1 has a base body 1a and a molded part 1b.
  • the base body 1 consists of an elastic, in particular foamed material and is firmly connected, in particular glued, to the molded part 1b.
  • the molded part 1b consists of a harder and less elastic material than the base body 1a, namely, for example, of rubber or caoutchouc.
  • the base body 1a and the molded part 1b are positively connected to one another.
  • two recesses 4 are formed in the upper side of the base body 1 a, into which corresponding projections 8 protruding from the lower side of the molded part 1 b engage.
  • the recesses 7 and the corresponding projections 8 extend over the entire width of the base body 1 and are positioned below the outer sealing surface sections 3.

Description

Die vorliegende Erfindung betrifft ein Dichtungselement zur stirnseitigen Abdichtung einer flüssigkeitsspeichernden Kammer, insbesondere einer Rakelkammer, gegenüber einer rotierenden Walze, insbesondere einer Rasterwalze, mit einem Dichtungskörper quaderartiger Grundform mit zwei einander gegenüberliegenden Seitenflächen und zwei einander gegenüberliegenden Stirnflächen, der eine Längsrichtung definiert und an seiner Oberseite eine Dichtungsfläche aufweist, die einen sich zwischen den Seitenflächen erstreckenden, konkav entlang der Längsrichtung nach innen gewölbten, insbesondere zylindersegmentförmig ausgebildeten Dichtungsflächenabschnitt zur Anlage an der rotierenden Walze aufweist.The present invention relates to a sealing element for the frontal sealing of a liquid-storing chamber, in particular a doctor blade chamber, against a rotating roller, in particular an anilox roller, with a sealing body of cuboid basic shape with two opposing side surfaces and two opposing end surfaces, which defines a longitudinal direction and on its upper side has a sealing surface which extends between the side surfaces, is concavely curved inwardly along the longitudinal direction, in particular in the shape of a cylinder segment, for bearing on the rotating roller.

Derartige Dichtungselemente sind im Stand der Technik in unterschiedlichen Ausführungsformen bekannt. Sie werden insbesondere eingesetzt, um die Farbkammern, auch Rakelkammern genannt, von Rotationsdruckmaschinen und insbesondere Flexo-Druckmaschinen stirnseitig abzudichten. Über eine solche Farb- oder Rakelkammer wird eine flüssige Druckfarbe auf eine rotierende Farb- oder Druckwalze, die insbesondere als Rasterwalze ausgebildet sein kann, aufgebracht.Such sealing elements are known in the prior art in different embodiments. They are used in particular to seal the end of the ink chambers, also called doctor blade chambers, of rotary printing machines and, in particular, flexographic printing machines. A liquid printing ink is applied via such an inking or doctor blade chamber to a rotating inking or printing roller, which can in particular be designed as an anilox roller.

Eine Rakelkammer hat ein längliches Gehäuse, welches parallel zu der Druckwalze ausgerichtet ist und einen zur Druckwalze offenen Innenraum aufweist der während des Druckbetriebs mit Farbe gefüllt ist. An dem Gehäuse sind zwei Rakelmesser derart angebracht, dass sie den Innenraum über die Länge des Gehäuses randseitig teilweise überdecken. Dabei stehen sie über die Gehäusewand vor und weisen einen definierten und gegebenenfalls einstellbaren Einstellwinkel zur Druckwalze auf.A doctor blade chamber has an elongated housing which is aligned parallel to the printing roller and has an interior space which is open to the printing roller and which is filled with ink during the printing operation. Two doctor blades are attached to the housing in such a way that they partially cover the inner space over the length of the housing at the edge. They protrude beyond the housing wall and have a defined and optionally adjustable setting angle to the printing roller.

Ein Dichtungselement der eingangs genannten Art ist aus der EP 2 930 025 A1 bekannt. Dieses Dichtungselement besitzt einen Dichtungskörper quaderartiger Grundform, der zwei einander gegenüberliegenden Seitenflächen, die in der Längsrichtung des Dichtungskörpers verlaufen, und zwei einander gegenüberliegende Stirnflächen aufweist.A sealing element of the type mentioned is from EP 2 930 025 A1 known. This sealing element has a sealing body of cuboid basic shape, which has two opposite side surfaces, which run in the longitudinal direction of the sealing body, and two opposite end faces.

An der Oberseite des Dichtungskörpers ist eine Dichtungsfläche vorgesehen, die einen sich zwischen den Seitenflächen, das heißt über die gesamte Breite des Dichtungskörpers erstreckenden, konkav nach innen gewölbten Dichtungsflächenabschnitt zur Anlage an einer rotierenden Druckwalze aufweist. Konkret ist der nach innen gewölbte Dichtungsflächenabschnitt in Art eines Zylindersegments ausgebildet, das quer zur Längsrichtung des Dichtungskörpers ausgerichtet ist, so dass die Wölbung des Dichtungsflächenabschnitts in der Längsrichtung verläuft.On the upper side of the sealing body, a sealing surface is provided which has a concavely inwardly curved sealing surface section extending between the side surfaces, that is to say over the entire width of the sealing body, for contact with a rotating pressure roller. Specifically, the inwardly curved sealing surface section is designed in the manner of a cylinder segment which is oriented transversely to the longitudinal direction of the sealing body, so that the curvature of the sealing surface section runs in the longitudinal direction.

In der Längsrichtung betrachtet auf den beiden gegenüberliegenden Seiten des nach innen gewölbten Dichtungsflächenabschnitts sind äußere Dichtungsflächenabschnitte vorgesehen, an denen im Betrieb die Rakelmesser zur Anlage kommen. Diese äußeren Dichtungsflächenabschnitte sind als ebene Flächen ausgebildet, die ausgehend von dem konkaven Dichtungsflächenabschnitts zu den Stirnflächen des Dichtungskörpers hin abfallen.Viewed in the longitudinal direction, on the two opposite sides of the inwardly curved sealing surface section, outer sealing surface sections are provided on which the doctor blades come to rest during operation. These outer sealing surface sections are designed as flat surfaces which, starting from the concave sealing surface section, slope towards the end faces of the sealing body.

Derartige Dichtungselemente liegen im Betrieb an der Umfangsfläche der rotierenden Druckwalze an und sind deshalb einer beträchtlichen mechanischen Beanspruchung sowie Verschleiß ausgesetzt. Um dieser Problematik zu begegnen wird in der EP 2 930 025 A1 vorgeschlagen, in die Dichtungsfläche des Dichtungselements ein Gleitmaterial wie beispielsweise Polytetrafluorethylen (PTFE) eizuvulkanisieren, wodurch eine lange Nutzungsdauer bei hoher mechanischer Stabilität erreicht wird.Such sealing elements rest against the circumferential surface of the rotating pressure roller during operation and are therefore exposed to considerable mechanical stress and wear. To counter this problem, the EP 2 930 025 A1 proposed that a sliding material such as polytetrafluoroethylene (PTFE) be vulcanized into the sealing surface of the sealing element, thereby achieving a long service life with high mechanical stability.

Aus der DE 202 01 901 U1 ist eine Dichtungselement zur stirnseitigen Abdichtung einer Rakelkammer gegenüber einer rotierenden Walze vorbekannt. Dieses besitzt einen Dichtungskörper mit zwei einander gegenüberliegenden Seitenflächen und zueinander gegenüberliegenden Stirnflächen. An der Oberseite sind zwei Dichtungslippen ausgebildet, die zur Anlage einer rotierenden Walze vorgesehen sind. Die Dichtungslippen dienen einer linienförmigen Anlage an einer rotierenden Walze. Auch wenn sich grundsätzlich ein solcher Aufbau bewährt hat, so wird zu teilen als nachteilig angesehen, dass durch die lediglich linienförmige Anlage an der rotierenden Walze ein relativ hoher Verschleiß des Dichtungselements auftritt.From the DE 202 01 901 U1 a sealing element for the frontal sealing of a doctor blade chamber against a rotating roller is previously known. This has a sealing body with two opposite side surfaces and opposite end surfaces. Two sealing lips are formed on the upper side, which are provided for contact with a rotating roller. The sealing lips are used for linear contact with a rotating roller. Even if such a structure has proven itself in principle, sharing it is viewed as disadvantageous in that the sealing element is subject to relatively high wear due to the merely linear contact with the rotating roller.

Ein ähnliches Dichtungselement ist auch aus der EP 2 425 972 A2 vorbekannt.A similar sealing element is also from the EP 2 425 972 A2 previously known.

Ausgehend von diesem Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, ein Dichtungselement der eingangs genannten Art zu schaffen, das besonders gute Dichtungseigenschaften bei hoher Laufleistung aufweist.On the basis of this prior art, it is an object of the present invention to create a sealing element of the type mentioned at the beginning which has particularly good sealing properties with high running performance.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved according to the invention by the features of claim 1.

Die Aufgabe wird nämlich dadurch gelöst, dass in der Dichtungsfläche eine kanalförmige Ausnehmung ausgebildet ist, die sich in den Dichtungskörper in dessen Längsrichtung wenigstens über die gesamte Länge des konkaven Dichtungsflächenabschnitts erstreckt und den konkaven Dichtungsabschnitt in zwei stegförmige Teilflächen unterteilt, die entlang der Ausnehmung auf gegenüberliegenden Seiten von dieser verlaufen.The object is achieved in that a channel-shaped recess is formed in the sealing surface, which extends into the sealing body in its longitudinal direction at least over the entire length of the concave sealing surface section and divides the concave sealing section into two web-shaped partial surfaces, which along the recess on opposite sides Pages from this run.

Erfindungsgemäß wird somit die Dichtungsfläche in ihrer Längsrichtung durch eine geradlinige, kanalförmige Ausnehmung, die bevorzugt in Querrichtung des Dichtungskörpers betrachtet mittig in dem Dichtungskörper ausgebildet ist, in zwei stegförmige Teilflächen unterteilt. Durch die kanalförmige Ausnehmung wird die Gesamtfläche des konkaven Dichtungsabschnitts, mit dem das Dichtungselement an einer Druck- oder Farbwalze in Anlage kommt, reduziert mit der Folge, dass sich die Flächenpressung an diesen stegförmigen Teilflächen im Vergleich zu einer Dichtungsfläche ohne kanalförmige Ausnehmung erhöht, so dass ein sicherer Kontakt zwischen dem Dichtungselement und der Farbwalze sichergestellt wird. Gleichzeitig wird durch die kanalförmige Ausnehmung die Flexibilität des Dichtungskörpers im Bereich des konkaven Dichtungsflächenabschnitts erhöht. Schließlich kann sich in der kanalförmigen Ausnehmung Farbe sammeln, welche eine Art Schmierfilm bildet und somit zu einer Selbstschmierung zwischen dem Dichtungselement und der Farbwalze beiträgt.According to the invention, the sealing surface is thus in its longitudinal direction by a straight, channel-shaped recess, which is preferably in the transverse direction of the sealing body, viewed centrally, is formed in the sealing body, divided into two web-shaped partial surfaces. The channel-shaped recess reduces the total area of the concave sealing section, with which the sealing element comes into contact with a printing or ink roller, with the result that the surface pressure on these web-shaped partial surfaces increases compared to a sealing surface without a channel-shaped recess, so that a secure contact between the sealing element and the inking roller is ensured. At the same time, the channel-shaped recess increases the flexibility of the sealing body in the area of the concave sealing surface section. Finally, paint can collect in the channel-shaped recess, which forms a type of lubricating film and thus contributes to self-lubrication between the sealing element and the inking roller.

In an sich bekannter Weise kann die Dichtungsfläche in der Längsrichtung betrachtet auf gegenüberliegenden Seiten des konkaven Dichtungsflächenabschnitts positionierte und insbesondere an diesen angrenzende äußere Dichtungsflächenabschnitte aufweisen, an denen im Betrieb die Rakelmesser zur Anlage kommen. Diese äußeren Dichtungsflächenabschnitte sind als ebene Flächen ausgebildet, die ausgehend von dem konkaven Dichtungsflächenabschnitt zu den Stirnflächen des Dichtungskörpers hin abfallen. Bei einer solchen Ausgestaltung kann sich die kanalartige Ausnehmung bis in die äußeren Dichtungsflächenabschnitte erstrecken.In a manner known per se, the sealing surface, viewed in the longitudinal direction, can have outer sealing surface sections positioned on opposite sides of the concave sealing surface section and in particular adjoining them, on which the doctor blades come to rest during operation. These outer sealing surface sections are designed as flat surfaces which, starting from the concave sealing surface section, slope towards the end faces of the sealing body. In such a configuration, the channel-like recess can extend into the outer sealing surface sections.

Gemäß einer Ausführungsform der Erfindung besitzt die kanalförmige Ausnehmung einen V-förmigen Querschnitt, der ausgehend von der Dichtungsfläche in den Dichtungskörper zuläuft.According to one embodiment of the invention, the channel-shaped recess has a V-shaped cross section which, starting from the sealing surface, runs into the sealing body.

In einer bevorzugten Ausgestaltung der Erfindung ragt eine Dichtungslippe von der Dichtungsfläche nach oben ab, die entlang des äußeren Rands, insbesondere entlang des gesamten äußeren Rands, der Dichtungsfläche verläuft und vorzugsweise mit den Seitenflächen und Stirnflächen des Dichtungskörpers bündig abschließt.In a preferred embodiment of the invention, a sealing lip protrudes upward from the sealing surface, along the outer edge, in particular along the entire outer edge of the sealing surface and preferably flush with the side surfaces and end surfaces of the sealing body.

Die umlaufende Dichtungslippe dient dazu, eine sichere Abdichtung der Farbkammer herzustellen, wenn die Farbkammer noch nicht mit vollem Druck gegen die Farbwalze gepresst wird. Ferner verhindert sie, dass Farbe, die sich in der kanalförmigen Ausnehmung sammelt und zur Selbstschmierung beiträgt, entweichen kann.The circumferential sealing lip serves to create a secure seal for the ink chamber when the ink chamber is not yet pressed against the ink roller with full pressure. It also prevents paint that collects in the channel-shaped recess and contributes to self-lubrication from escaping.

An den Endbereichen der kanalartigen Ausnehmung ist bevorzugt jeweils ein Dichtungslippenabschnitt der Dichtungslippe ausgebildet, welcher die entlang der Seitenflächen verlaufenden Dichtungslippenabschnitte der Dichtungslippe miteinander verbindet. In bevorzugter Weise ist vorgesehen, dass die beiden Dichtungslippenabschnitte, welche die entlang der Seitenflächen verlaufenden Dichtungslippenabschnitte verbinden, jeweils eine V-artige Struktur besitzen, wobei die V-Spitzen jeweils benachbart zu einem axialen Ende der kanalförmigen Ausnehmung auf der Dichtungsfläche, insbesondere auf den äußeren Dichtungsflächenabschnitten, positioniert sind und voneinander wegweisen, und die freien Enden der Dichtungslippenabschnitten mit den entlang der Seitenflächen verlaufenden Dichtungslippenabschnitten verbunden sind. Dabei beträgt der Öffnungswinkel der V-förmigen Dichtungslippenabschnitte mindestens 60° und höchstens 120°, bevorzugt 90°. Die V-artig ausgebildeten Dichtungslippenabschnitte dienen zur Verbesserung der Abstützung der an ihnen in Anlage kommenden Rakelmesser. Des Weiteren dienen sie zur Abdichtung der kanalförmigen Ausnehmung gegen einen Verlust von Farbe, die sich in der Ausnehmung gesammelt hat.At the end regions of the channel-like recess, a sealing lip section of the sealing lip is preferably formed in each case, which connects the sealing lip sections of the sealing lip running along the side surfaces to one another. It is preferably provided that the two sealing lip sections, which connect the sealing lip sections running along the side surfaces, each have a V-like structure, the V-tips each being adjacent to an axial end of the channel-shaped recess on the sealing surface, in particular on the outer one Sealing surface portions, are positioned and facing away from one another, and the free ends of the sealing lip portions are connected to the sealing lip portions extending along the side surfaces. The opening angle of the V-shaped sealing lip sections is at least 60 ° and at most 120 °, preferably 90 °. The V-shaped sealing lip sections serve to improve the support of the doctor blades coming into contact with them. They also serve to seal the channel-shaped recess against loss of paint that has collected in the recess.

Bevorzugt weisen die Dichtungslippen eine Höhe zwischen 0,2 mm und 1,5 mm, insbesondere 0,5 bis 1 mm und bevorzugt 0,8 mm auf.The sealing lips preferably have a height between 0.2 mm and 1.5 mm, in particular 0.5 to 1 mm and preferably 0.8 mm.

Gemäß einer weiteren Ausführungsform der Erfindung besteht der Dichtungskörper zumindest im Bereich der Dichtungsfläche aus einem vulkanisierbaren Material und ist ein Gleitmaterial in die Dichtungsfläche einvulkanisiert. Durch eine Einvulkanisierung des Gleitmaterials in die Dichtungsfläche wird im Unterschied zu einer bloßen Beschichtung der Dichtungsfläche das Gleitmaterial mit dem Material des Dichtungskörpers vernetzt. Die Einvulkanisierung führt also gegenüber einer Beschichtung zu einer erhöhten mechanischen Stabilität und einer längeren Nutzungsdauer bis zum vollständigen Abrieb des Gleitmaterials.According to a further embodiment of the invention, the sealing body consists of a vulcanizable material, at least in the area of the sealing surface, and a sliding material is vulcanized into the sealing surface. By vulcanizing the sliding material into the sealing surface, in contrast to a mere coating of the sealing surface, the sliding material is crosslinked with the material of the sealing body. In comparison with a coating, vulcanization therefore leads to increased mechanical stability and a longer service life until the sliding material is completely abraded.

Vorteilhaft kann das Gleitmaterial Polytetrafluorethylen (PTFE) aufweisen oder daraus bestehen. Polytetrafluorethylen (PTFE) besitzt eine hohe Abriebsbeständigkeit und Wärmeleitfähigkeit sowie einen sehr niedrigen Gleitreibungskoeffizienten.The sliding material can advantageously comprise or consist of polytetrafluoroethylene (PTFE). Polytetrafluoroethylene (PTFE) has high abrasion resistance and thermal conductivity as well as a very low coefficient of sliding friction.

Der Dichtungskörper kann aus einem elastischen Vollmaterial, insbesondere aus Gummi oder Kautschuk bestehen.The sealing body can consist of an elastic solid material, in particular of rubber or caoutchouc.

Gemäß einer alternativen Ausführungsform umfasst der Dichtungskörper einen Grundkörper und ein Formteil, wobei der Grundkörper und das Formteil fest miteinander verbunden, insbesondere verklebt sind.According to an alternative embodiment, the sealing body comprises a base body and a molded part, the base body and the molded part being firmly connected to one another, in particular glued.

Zusätzlich können der Grundkörper und das Formteil formschlüssig miteinander verbunden sein. Hierzu ist beispielsweise in der Oberseite des Grundkörpers wenigstens eine Ausnehmung ausgebildet, in die ein korrespondierender, von der Unterseite des Formteils abragender Vorsprung eingreift, um das Formteil formschlüssig mit dem Grundkörper zu verbinden und an diesem zu positionieren.In addition, the base body and the molded part can be positively connected to one another. For this purpose, for example, at least one recess is formed in the upper side of the base body, into which a corresponding projection protruding from the underside of the molded part engages in order to positively connect the molded part to the base body and position it thereon.

Bevorzugt erstrecken sich die Ausnehmungen und der korrespondierende Vorsprung über die gesamte Breite des Grundkörpers.The recesses and the corresponding projection preferably extend over the entire width of the base body.

Der Grundkörper besteht vorteilhaft aus einem elastischen Material, insbesondere aus einem geschäumten Material. Der zweiteilige Aufbau des Dichtungselements aus einem Grundkörper und einem Formteil, an dem die Dichtungsfläche angeordnet ist, ermöglicht es, für das Formteil ein im Hinblick auf die gewünschten Funktionen Beständigkeit und Wärmeleitung optimales Material auszuwählen.The base body is advantageously made of an elastic material, in particular a foamed material. The two-part construction of the sealing element from a base body and a molded part, on which the sealing surface is arranged, makes it possible to select a material that is optimal with regard to the desired functions of resistance and heat conduction for the molded part.

In bevorzugter Weise weist das Formteil eine geringere Elastizität als der Grundkörper auf. Bei der Verwendung eines festen, gummi- oder kautschukartigen Materials ist der Abrieb an der Dichtungsfläche des Formteils - bereits ohne einvulkanisiertes Gleitmaterial - gegenüber dem elastischen Material des Grundkörpers deutlich herabgesetzt. Diese Ausgestaltung ist im Hinblick auf die Aufgabenstellung insbesondere solchen Lösungen überlegen, die unmittelbar das elastische Material des Grundkörpers vor Abrieb und Überhitzung schützen.The molded part preferably has a lower elasticity than the base body. When using a solid, rubber-like or caoutchouc-like material, the abrasion on the sealing surface of the molded part - even without vulcanized sliding material - is significantly reduced compared to the elastic material of the base body. With regard to the task at hand, this configuration is particularly superior to solutions that directly protect the elastic material of the base body from abrasion and overheating.

Das Formteil kann aus Gummi oder Kautschuk bestehen. Andere vulkanisierbare Materialien können aber auch eingesetzt werden.The molded part can consist of rubber or rubber. However, other vulcanizable materials can also be used.

Hinsichtlich weiterer vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die nachfolgende Beschreibung eines Ausführungsbeispiels eines erfindungsgemäßen Dichtungselements unter Bezugnahme auf die beiliegenden Zeichnungen verwiesen.With regard to further advantageous embodiments of the invention, reference is made to the subclaims and the following description of an exemplary embodiment of a sealing element according to the invention with reference to the accompanying drawings.

In der Zeichnung zeigt

Figur 1
eine perspektivische Ansicht eines Dichtungselements und
Figur 2
eine perspektivische Explosionsansicht des Dichtungselements.
In the drawing shows
Figure 1
a perspective view of a sealing element and
Figure 2
an exploded perspective view of the sealing element.

In der Zeichnung ist eine Ausführungsform eines erfindungsgemäßen Dichtungselements dargestellt, das dazu dient, eine Kamerrakel seitlich abzudichten. Das Dichtungselement besitzt einen Dichtungskörper 1 quaderartiger Grundform mit zwei aneinander gegenüberliegenden Seitenflächen und zwei aneinander gegenüberliegenden Stirnflächen. Dabei definiert der Dichtungskörper eine Längsrichtung, die durch die Seitenflächen vorgegeben wird.In the drawing, an embodiment of a sealing element according to the invention is shown, which is used to laterally seal a camera squeegee. The sealing element has a sealing body 1 of cuboid basic shape with two mutually opposite side surfaces and two mutually opposite end surfaces. The sealing body defines a longitudinal direction that is specified by the side surfaces.

An seiner Oberseite weist der Dichtungskörper 1 eine Dichtungsfläche auf, die einen zentralen Dichtungsflächenabschnitt 2 zur Anlage an einer rotierenden Farbwalze aufweist und eine zu dieser Farbwalze korrespondierende Form aufweist. Hierzu ist der zentrale Dichtungsflächenabschnitt 2 konkav nach innen gewölbt ausgebildet und besitzt die Form eines Zylindermantelsegments, das sich quer zur Längsrichtung des Dichtungskörpers 1 über dessen gesamte Breite erstreckt. Somit verläuft die konkave Wölbung entlang der Längsrichtung des Dichtungskörpers 1.On its upper side, the sealing body 1 has a sealing surface which has a central sealing surface section 2 for contact with a rotating inking roller and has a shape corresponding to this inking roller. For this purpose, the central sealing surface section 2 is designed to be concave inward and has the shape of a cylinder jacket segment which extends transversely to the longitudinal direction of the sealing body 1 over its entire width. Thus, the concave bulge runs along the longitudinal direction of the sealing body 1.

Die Dichtungsfläche weist weiterhin in der Längsrichtung betrachtet auf gegenüberliegenden Seiten des konkaven Dichtungsflächenabschnitts 2 positionierte und an diesen angrenzende äußere Dichtungsflächenabschnitte 3 auf, an denen im Betrieb Rakelmesser zur Anlage kommen. Die äußeren Dichtungsflächenabschnitte 3 sind als ebene Flächen ausgebildet, die ausgehend von dem konkaven Dichtungsflächenabschnitt 2 zu den Stirnflächen des Dichtungskörpers 1 hin abfallen, so dass der Dichtungskörper 1 im Bereich der Stirnflächen eine geringere Höhe besitzt als im Bereich des zentralen, konkaven Dichtungsflächenabschnitts 2.The sealing surface also has, viewed in the longitudinal direction, positioned on opposite sides of the concave sealing surface section 2 and adjoining these outer sealing surface sections 3, on which doctor blades come to rest during operation. The outer sealing surface sections 3 are designed as flat surfaces which, starting from the concave sealing surface section 2, slope towards the end faces of the sealing body 1, so that the sealing body 1 is in the area of the end faces has a lower height than in the area of the central, concave sealing surface section 2.

In der Dichtungsfläche ist eine kanalförmige Ausnehmung 4 ausgebildet, die sich geradlinig in der Längsrichtung des Dichtungskörpers über die gesamte Länge des konkaven Dichtungsflächenabschnitts 2 bis in die äußeren Dichtungsflächenabschnitte 3 erstreckt und die Dichtungsfläche, d.h. den konkaven Dichtungsflächenabschnitt 2 und den äußeren Dichtungsflächenabschnitt 3 in zwei stegförmige Teilflächen 2a, 2b, 3a, 3b unterteilt, die entlang der Ausnehmung 4 auf gegenüberliegenden Seiten von dieser verlaufen.In the sealing surface, a channel-shaped recess 4 is formed, which extends in a straight line in the longitudinal direction of the sealing body over the entire length of the concave sealing surface section 2 into the outer sealing surface sections 3 and the sealing surface, ie the concave sealing surface section 2 and the outer sealing surface section 3 in two web-shaped Sub-areas 2a, 2b, 3a, 3b, which run along the recess 4 on opposite sides of the latter.

In dem dargestellten Ausführungsbeispiel verläuft die kanalförmige Ausnehmung 4 in Querrichtung des Dichtungselements betrachtet mittig von dem Dichtungskörper 1, so dass die stegförmigen Teilflächen 2a, 2b eine übereinstimmende gleichbleibende Breite besitzen.In the illustrated embodiment, the channel-shaped recess 4, viewed in the transverse direction of the sealing element, runs centrally from the sealing body 1, so that the web-shaped partial surfaces 2a, 2b have a consistent, consistent width.

Durch die kanalförmige Ausnehmung 4, die im dargestellten Ausführungsbeispiel einen V-förmigen Querschnitt besitzt, wird die Dichtungsfläche verkleinert mit der Folge, dass bei gleichbleibenden Anpressdruck an die Farbwalze die Flächenpressung in den stegförmigen Teilflächen 2a, 2b, 3a, 3b erhöht und damit eine sichere Anlage an der Farbwalze gewährleistet ist.Through the channel-shaped recess 4, which has a V-shaped cross-section in the illustrated embodiment, the sealing surface is reduced with the result that, with constant contact pressure on the inking roller, the surface pressure in the web-shaped partial surfaces 2a, 2b, 3a, 3b is increased and thus a more reliable System on the inking roller is guaranteed.

Außerdem kann sich in der kanalförmigen Ausnehmung 4 Farbe sammeln, welche eine Art Schmierfilm bildet und somit zu einer Selbstschmierung zwischen dem Dichtungselement und der Farbwalze beiträgt. Schließlich wird durch die kanalförmige Ausnehmung 4 die Flexibilität des Dichtungselements erhöht, was ebenfalls zu einer optimalen Abdichtung beiträgt.In addition, paint can collect in the channel-shaped recess 4, which forms a type of lubricating film and thus contributes to self-lubrication between the sealing element and the inking roller. Finally, the channel-shaped recess 4 increases the flexibility of the sealing element, which also contributes to an optimal seal.

Ferner weist das Dichtungselement eine von der Dichtungsfläche nach oben abragende Dichtungslippe 5 auf, die sich entlang des gesamten äußeren Rands der Dichtungsfläche erstreckt und entsprechend zwei entlang der Seitenflächen verlaufende Dichtungslippenabschnitte 5a und zwei entlang der Stirnflächen verlaufende Dichtungslippenabschnitte 5b aufweist. Die Dichtungslippe 5 besitzt eine Höhe von etwa 0,8 mm und schließt mit den Seitenflächen und Stirnflächen des Dichtungskörpers 1 bündig ab.Furthermore, the sealing element has a sealing lip 5 which protrudes upward from the sealing surface and extends along the entire outer Extends the edge of the sealing surface and correspondingly has two sealing lip sections 5a running along the side surfaces and two sealing lip sections 5b running along the end faces. The sealing lip 5 has a height of approximately 0.8 mm and is flush with the side surfaces and end surfaces of the sealing body 1.

An den axialen Endbereichen der kanalartigen Ausnehmung 4 ist jeweils ein Dichtungslippenabschnitt 5c der Dichtungslippe 5 ausgebildet, welcher die entlang der Seitenflächen verlaufenden Dichtungslippenabschnitte 5a der Dichtungslippe 5 miteinander verbindet. Die beiden Dichtungslippenabschnitte 5c besitzen jeweils eine V-artige Struktur, wobei die V-Spitzen jeweils benachbart zu einem axialen Ende der kanalförmigen Ausnehmung 4 auf den äußeren Dichtungsflächenabschnitten 3 positioniert sind und voneinander weg weisen und die freien Enden der Dichtungslippenabschnitte mit den entlang der Seitenflächen verlaufenden Dichtungslippenabschnitten 5a verbunden sind. Dabei beträgt der Öffnungsring der V-förmigen Dichtungslippenabschnitte 5c etwa 90°.At the axial end regions of the channel-like recess 4, a sealing lip section 5c of the sealing lip 5 is formed, which connects the sealing lip sections 5a of the sealing lip 5 running along the side surfaces to one another. The two sealing lip sections 5c each have a V-like structure, the V-tips each being positioned adjacent to an axial end of the channel-shaped recess 4 on the outer sealing surface sections 3 and facing away from one another and the free ends of the sealing lip sections with the ones running along the side surfaces Sealing lip portions 5a are connected. The opening ring of the V-shaped sealing lip sections 5c is approximately 90 °.

In dem dargestellten Ausführungsbeispiel besteht der Dichtungskörper 1 im Bereich der Dichtungsfläche aus einem vulkanisierbaren Material, in welches ein Gleitmaterial 6, welches bevorzugt aus Polytetrafluorethylen (PTFE) besteht oder enthält, vulkanisiert ist. Konkret ist das Gleitmaterial 6 im Bereich der konkaven Dichtungsflächenabschnitts 2 und ein daran angrenzenden Teil der äußeren Dichtungsflächenabschnitte 3 vorgesehen. Dadurch besitzt die Dichtungsfläche eine hohe Abrieb- und Hitzebeständigkeit sowie eine hohe Wärmeleitfähigkeit, die eine hohe Verschleißfestigkeit bewirken. Die Eindringtiefe des vulkanisierten Gleitmaterials in die Dichtungsfläche beträgt 0,2 mm, insbesondere 0,3 mm, und liegt damit deutlich über der Dicke von herkömmlichen Beschichtungen.In the exemplary embodiment shown, the sealing body 1 consists of a vulcanizable material in the area of the sealing surface, in which a sliding material 6, which preferably consists or contains polytetrafluoroethylene (PTFE), is vulcanized. Specifically, the sliding material 6 is provided in the area of the concave sealing surface section 2 and an adjacent part of the outer sealing surface sections 3. As a result, the sealing surface has high abrasion and heat resistance as well as high thermal conductivity, which results in high wear resistance. The penetration depth of the vulcanized sliding material into the sealing surface is 0.2 mm, in particular 0.3 mm, and is thus significantly greater than the thickness of conventional coatings.

Der Dichtungskörper 1 besitzt einen Grundkörper 1a und ein Formteil 1b. Der Grundkörper 1 besteht dabei aus einem elastischen, insbesondere geschäumten Material und ist fest mit dem Formteil 1b verbunden, insbesondere verklebt. Das Formteil 1b besteht dagegen aus einem härteren und weniger elastischen Material als der Grundkörper 1a, nämlich beispielsweise aus Gummi oder Kautschuk. Zusätzlich sind der Grundkörper 1a und das Formteil 1b formschlüssig miteinander verbunden. Hierzu sind in der Oberseite des Grundkörpers 1a zwei Ausnehmungen 4 ausgebildet, in die korrespondierende von der Unterseite des Formteils 1b abragende Vorsprünge 8 eingreifen. Dabei erstrecken sich die Ausnehmungen 7 und die korrespondierenden Vorsprünge 8 über die gesamte Breite des Grundkörpers 1 und sind im unterhalb der äußeren Dichtungsflächenabschnitte 3 positioniert.The sealing body 1 has a base body 1a and a molded part 1b. The base body 1 consists of an elastic, in particular foamed material and is firmly connected, in particular glued, to the molded part 1b. The molded part 1b, on the other hand, consists of a harder and less elastic material than the base body 1a, namely, for example, of rubber or caoutchouc. In addition, the base body 1a and the molded part 1b are positively connected to one another. For this purpose, two recesses 4 are formed in the upper side of the base body 1 a, into which corresponding projections 8 protruding from the lower side of the molded part 1 b engage. The recesses 7 and the corresponding projections 8 extend over the entire width of the base body 1 and are positioned below the outer sealing surface sections 3.

Claims (15)

  1. Sealing element for sealing the end face of a liquid-storing chamber, in particular a doctor chamber, with respect to a rotating role, in particular an anilox role, having
    a sealing body (1) of cuboidal basic shape having two mutually opposite side faces and two mutually opposite end faces, the sealing body (1) defining a longitudinal direction and having, on its upper side, a sealing surface which has a sealing surface portion (2), which extends between the side faces, is curved inwards concavely along the longitudinal direction and is designed, in particular, in the form of a segment of a cylinder, for baring against the rotating role,
    characterized in that
    a channel-shaped recess (4) is formed in the sealing surface, which recess (4) extends in the sealing body (1) in the longitudinal direction thereof at least over the entire length of the concave sealing surface portion (2) and divides the concave sealing surface portion (2) into two web-shaped partial faces (2a, 2b), which extend along the recess (4) on opposite sides thereof.
  2. Sealing element according to claim 1, characterized in that the sealing surface, viewed in the longitudinal direction, has outer sealing surface portions (3) positioned on opposite sides of the concave sealing surface portion (2) and in particular adjacent thereto, in particular for abutment against doctor blades, wherein the outer sealing surface portions (3) are preferably formed as flat surfaces which, starting from the concave sealing surface portion (2), slope towards the end faces of the sealing body (1) and/or wherein the channel-shaped recess (4) extends into the outer sealing surface portions (3).
  3. Sealing element according to any of the preceding claims, characterized in that the channel-shaped recess (4) has a V-shaped cross-section.
  4. Sealing element according to any of the preceding claims, characterized in that a sealing lip (5) projects upwards from the sealing surface, which lip runs along the outer edge, in particular along the entire outer edge, of the sealing surface and preferably ends flush with the side faces and the end faces of the sealing body (1).
  5. Sealing element according to claim 4 and any of claims 1 to 3, characterized in that a sealing lip portion (5c) of the sealing lip (5) is formed at each of the end regions of the channel-shaped recess (4), which sealing lip portion (5c) interconnects the sealing lip portions (5a) of the sealing lip (5) extending along the side faces.
  6. Sealing element according to claim 5, characterized in that the two sealing lip portions (5c) connecting the sealing lip portions (5a) running along the side faces each have a V-shaped structure, the V-peaks each being adjacent to an axial end of the channel-shaped recess (4) on the sealing surface, in particular the outer sealing surface portions (3), and point away from each other, and the free ends of the sealing lip portions (5c) are connected to the sealing lip portions (5a) extending along the side faces, wherein preferably the opening angle of the V-shaped sealing lip portions (5a) is in each case at least 60° and at most 120°, preferably 90°.
  7. Sealing element according to any of claims 4 to 6, characterized in that the sealing lips (5) have a height of between 0.2mm and 1.5mm, in particular 0.5mm to 1mm and preferably 0.8mm.
  8. Sealing element according to any of the preceding claims, characterized in that the sealing body (1) consists of a vulcanizable material at least in the region of the sealing surface and a sliding material (6) is vulcanized into the sealing surface, the sliding material in particular having polytetrafluoroethylene (PTFE) or consisting thereof.
  9. Sealing element according to claim 8, characterized in that the sliding material is vulcanized into the sealing surface with a penetration depth of at least 0.2mm, in particular at least 0.3mm.
  10. Sealing element according to any of the preceding claims, characterized in that the sealing body (1) consists of an elastic solid material, in particular rubber or caoutchouc.
  11. Sealing element according to any of claims 1 to 9, characterized in that the sealing body (1) comprises a base body (1a) made of an elastic material and a molded part (1b) supporting the sealing surface, the base body (1a) and the molded part (1b) being firmly connected to one another, in particular glued.
  12. Sealing element according to claim 11, characterized in that the base body (1a) and the molded part (1b) are connected to one another in a form-fitting manner.
  13. Sealing element according to claim 12, wherein at least one recess (7) is formed on the upper side of the base body (1a) into which recess a corresponding projection (8) projecting from the under side of the molded part (1b) engages in order to connect the molded part (1b) to the base body (1a) in a form-fitting manner and to position it thereon, characterized in that the recess (7) and the corresponding projection (8) extend over the entire width of the base body (1a).
  14. Sealing element according to any of claims 11 to 13, characterized in that the molded part (1b) has a lower elasticity than the base body (1a).
  15. Sealing element according to any of claims 11 to 14, characterized in that the molded part (1b) is made of rubber or caoutchouc.
EP19162660.5A 2018-03-14 2019-03-13 Seal element Active EP3539776B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202018101422.6U DE202018101422U1 (en) 2018-03-14 2018-03-14 sealing element

Publications (2)

Publication Number Publication Date
EP3539776A1 EP3539776A1 (en) 2019-09-18
EP3539776B1 true EP3539776B1 (en) 2021-05-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022100320U1 (en) 2022-01-20 2023-04-25 Sven Thomas Willutzki Sealing element for sealing a liquid-storing chamber at the front

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4227099A1 (en) 2022-02-10 2023-08-16 Daetwyler Swisstec Ag End seal

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Publication number Priority date Publication date Assignee Title
DE20201901U1 (en) * 2002-02-08 2003-06-12 Fischer & Krecke Gmbh & Co Seal for chambered doctor blade in printing machine, has solid square base with tolerance compensating lips for securing inside holder
DE202009013643U1 (en) * 2009-10-26 2011-03-17 Zeljko, Kitic sealing element
EP2425972B1 (en) * 2010-09-01 2016-01-13 Anthony Foley Self-lubricating seal for enclosed doctor blade assembly
DE102013010751A1 (en) * 2013-06-27 2014-12-31 Heidelberger Druckmaschinen Ag Seal for squeegee devices
EP2930025B1 (en) 2014-04-11 2018-05-30 wiguTec Gummitechnologie GmbH & Co. KG Seal element

Non-Patent Citations (1)

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Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022100320U1 (en) 2022-01-20 2023-04-25 Sven Thomas Willutzki Sealing element for sealing a liquid-storing chamber at the front
EP4215368A2 (en) 2022-01-20 2023-07-26 Steinling Engineering Sven Thomas Willutzki Sealing element for sealing a fluid storage chamber on the face side
EP4215368A3 (en) * 2022-01-20 2023-10-11 Steinling Engineering Sven Thomas Willutzki Sealing element for sealing a fluid storage chamber on the face side

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EP3539776A1 (en) 2019-09-18

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