EP3653383B1 - Inking unit of a printing machine and method for fixing at least one inking cylinder in a slidable carriage of an inking unit - Google Patents

Inking unit of a printing machine and method for fixing at least one inking cylinder in a slidable carriage of an inking unit Download PDF

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Publication number
EP3653383B1
EP3653383B1 EP19210034.5A EP19210034A EP3653383B1 EP 3653383 B1 EP3653383 B1 EP 3653383B1 EP 19210034 A EP19210034 A EP 19210034A EP 3653383 B1 EP3653383 B1 EP 3653383B1
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EP
European Patent Office
Prior art keywords
inking unit
bearing housing
lever
lever element
support element
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EP19210034.5A
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German (de)
French (fr)
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EP3653383A1 (en
Inventor
Dietmar Koopmann
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Publication of EP3653383A1 publication Critical patent/EP3653383A1/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
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/304—Arrangements for inking roller bearings, forks or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/32—Lifting or adjusting devices

Definitions

  • the invention relates to an inking unit of a printing press according to all the features of claim 1 and a method for fastening at least one inking unit cylinder to a carriage of an inking unit according to all the features of claim 6.
  • inking unit cylinders in particular their functional element, usually an outer sleeve. It is therefore known to rotatably mount an inking unit cylinder at both ends in a support element during printing, but to change the functional element on one side to provide a bearing housing, to which a bearing is assigned, in which a journal of the inking unit cylinder is rotatably mounted, the bearing housing relative to the support element is pivotable about at least one pivot axis in order to expose or store the journal of the inking unit cylinder.
  • a locking device is provided, with which the bearing housing is connected to the support element.
  • the registration EP 2 079 588 A1 shows such a color work.
  • the disadvantage of such an inking unit is that the locking is done manually, so that the mechanical stability depends on the machine operator. This can result in poor-quality prints.
  • the DE 1 240 530 B shows an inking unit in which a quick shutdown of a roller is made possible by a pivoting movement of a toggle lever. This arrangement does not allow the pin of the inking unit cylinder to be exposed.
  • WO2008043747 and DE1240530 disclose printing units (inking units) with rotatable impression cylinders and their attachment in printing presses.
  • the object of the present invention is therefore to propose an inking unit and a method with which reproducible qualitatively better prints than in the prior art are possible.
  • the locking device comprises at least two lever elements which are articulated to one another, a first lever element being mounted in the support element and being movable relative to it, in particular being linearly movable, and a second lever element being pivotably mounted on the bearing housing, wherein the locking device comprises a stop for the bearing housing and/or the second lever element, the lever elements being movable and connected to one another in such a way that the bearing housing and/or the second lever arm can be pressed against the stop with a pressing force.
  • a second lever element can thus be moved by a first lever element, with the second lever element being arranged pivotably on the bearing housing.
  • the bearing housing is pivoted about a preferably vertically running pivot axis via the second lever element.
  • a stop which is assigned in particular to the support element, limits the movement of the bearing housing. The stop can act on the bearing housing and/or on the second lever element.
  • This also includes add-on parts which are connected to the bearing housing and/or to the second lever element. This can be, for example, an easily replaceable wear piece which can be attached to the bearing housing or the lever element.
  • a small movement of the first lever element can be translated into a pressing force by a suitably selected translation, with which the bearing housing or the second lever element can be pressed against the stop. It is particularly advantageous that the pressing force can be comparatively large, which leads to increased stability of the entire inking unit. As a result, vibrations of the inking unit cylinder can be avoided, which in the prior art are responsible for vibration stripes in the print. Overall, the quality of the printed products can be increased by the invention.
  • the pivot axis is arranged in a plane which is perpendicular to the axis of rotation of the inking unit cylinder. A space-saving construction of the inking unit can thus be achieved.
  • the support element can be displaceable relative to a machine position, in particular on guides, in a displacement direction. In this case, it is advantageous if the pivot axis also runs perpendicular to this displacement direction.
  • the first lever element is mounted in the support element so that it can move linearly, it being possible to cause a pivoting movement of the bearing housing with the linear movement.
  • a linear movement is easily manageable.
  • a linear cylinder or a linear motor is provided for this purpose.
  • a linear cylinder can, for example, be a pneumatic cylinder, in particular a double-acting pneumatic cylinder.
  • the movement of the first lever element can be limited by at least one limiting device.
  • a limiting device can be another stop.
  • the limiting device can also be defined by the stroke of the pneumatic cylinder, ie by the end points of the piston that can be moved within the pneumatic cylinder. Limiting the movement prevents the pressing force from being excessively reduced again. Such a case is explained below with reference to the figures.
  • the first lever element when the bearing housing and/or the second lever element rests against the stop, the first lever element can be moved further, with the first lever arm reaching a position in which the first lever element and the second lever element are in are in balance with each other, can be crossed.
  • the first lever element and the second lever element assume an acute angle.
  • This equilibrium is usually an unstable equilibrium, which arises when, for example, the first lever element and the second lever element are exactly perpendicular to one another. In this case, the pressing force is maximum. This position is often referred to as the dead center.
  • the first lever element continues to press the second lever element and/or the bearing housing with the pressing force against the stop.
  • the opposing force to the pressing force now presses the first lever element against the limiting device, so that overall there is a very stable locking of the bearing housing on the support element. Vibrations of the inking unit cylinder are thus further reduced and the quality of the printed product is further improved.
  • the support element is designed as a carriage which can be displaced relative to an inking unit carrier.
  • the inking unit carrier can be part of a printing press frame or be attached to it.
  • This configuration makes it possible, for example, to use outer sleeves with very different diameters and then to position the inking unit cylinder depending on the diameter by shifting the carriage, for example relative to other printing unit cylinders.
  • the pivotability of the bearing housing means that the invention has the advantage, in contrast to many other solutions known from the prior art, that the support element does not have to be displaced in order to expose a journal of the inking unit cylinder.
  • an anilox roller which by a Doctor blade chamber is colored.
  • Such a doctor blade chamber is usually attached to the support elements which lie at the ends of the inking unit cylinder.
  • the above-mentioned object is also achieved by a method for fastening at least one inking unit cylinder to at least one support element of an inking unit, with a bearing housing to which at least one bearing rotatably supporting a journal of the inking unit cylinder is assigned, the bearing housing being pivoted about at least one pivot axis relative to the support element is used in order to expose or store the journal of the inking unit cylinder, with a locking device, with which the bearing housing is fixed to the support element, the method being characterized in that the locking device comprises at least two lever elements which are articulated to one another, a first lever element in the Supporting element is mounted and is moved relative to this and a second lever element is pivotally mounted on the bearing housing, wherein the locking device comprises a stop for the bearing housing and / or the second lever element, wherein the lever elements moves who and are connected to one another in that the bearing housing and/or the second lever arm are pressed against the stop with a pressing force, with the first lever element being mounted in the support element so that it can
  • the figure 1 shows a view of the inking unit 1 according to the invention with an inking unit cylinder 2 and a bearing housing 3, in which the pin 4 of the inking unit cylinder can be stored.
  • the bearing housing 3 has a bearing which is not visible in this figure and surrounds the pin 4 .
  • the inking unit can be operated in this state.
  • the bearing housing 3 can be pivoted about the axis of rotation 5 .
  • the axis of rotation 5, which can be embodied by a pivot bearing, is supported on a support element 6 and can be adjustable in its height position relative to the support element, for example by a height adjustment device. This makes it possible to align the inking unit cylinder.
  • the support element is supported on components of a machine frame (not shown) and is generally held immovable relative to this during printing operation.
  • the support element 6 carries an attachment 7, which can also be designed in one piece with the support element 6.
  • a first lever element 8 can be displaced linearly in or on the endpiece in the direction of the double arrow 9 by means of a displacement drive (not shown), the first lever element 8 being articulated to a second lever element 10 .
  • a first joint 11 serves for this purpose. With a second joint 12, the second lever element 10 is connected in an articulated manner to the bearing housing. In the in the 1 The position shown is the lever element 10 near the joint 12 on a stop edge 13 of the extension piece 7.
  • first lever element 8 and the second Lever element 10 an acute angle ⁇ , ie an angle of less than 90, preferably between 80 and 89 degrees, in particular between 85 and 89 degrees. Since the movement of the first lever element 11 is limited by a limiting device (not shown), a force that is transmitted, for example, from the inking unit cylinder 2 to the bearing housing 3 can be transmitted to the first lever element 8, but does not lead to any movement of the bearing housing 3 relative to the support element 6. A high print quality can thus be achieved.
  • the figure 3 shows a further exemplary embodiment of an inking unit 1 according to the invention.
  • This figure also shows a section through part of the bearing housing 3, so that different functions within the inking unit 1 can be seen better.
  • At least one bearing 14 is configured as a roller bearing, for example, and is fastened in or on a bearing holder 15 .
  • This bearing holder 15 can be displaced, for example, along sliding surfaces relative to the bearing housing 3, with the bearing holder 15 and thus the at least one bearing 14 being able to be pushed onto the journal 4, so that this and with it the inking unit cylinder 2 no longer move in the radial direction relative to the bearing housing 3 can move.
  • a drive 16 is provided, which is in particular encompassed by the bearing housing 3.
  • the drive 16 can be designed as a piston-cylinder unit and can move the bearing holder 15 by means of a push/pull rod 18 attached to the piston 17 .
  • the figure 4 shows the embodiment of figure 3 , but the bearing holder 15 is withdrawn from the pin 4.
  • the bearing housing can now be pivoted, as already in connection with the Figures 1 and 2 was described.
  • the figure 5 shows a development of an inking unit 1 according to the invention, in particular one after Figures 3 and 4 .
  • This advantageous development in turn comprises a drive 16 arranged on the bearing housing, with which in particular a bearing 14 can be pushed onto the pin 4 and pulled off the pin 4 again.
  • a protective element 20 can be displaceable by means of the drive 16 via any type of connection, in particular a mechanical connection.
  • the bearing 14 can be arranged in a bearing holder 15 and the bearing holder 15 can include a pin 21 which projects out of the bearing housing 3 through a slot 22, for example. This pin 21 can be displaced with the bearing holder 15 accordingly.
  • the pin 21 can also be arranged directly on a push/pull rod 18 of a drive 16 configured as a piston-cylinder unit.
  • the protective element 20 includes in particular a holder 23 and the actual protection 24 which is held by the holder 23 .
  • a guard 24 can cover parts of the end face and/or parts of the peripheral surface in the vicinity of the end face of the inking unit cylinder 2, so that, for example, an operator is prevented from touching the inking unit cylinder 2.
  • Such a protection can also be a splash guard, in which case it is avoided in particular that paint from the inking unit cylinder gets into the environment. This is particularly advantageous when the inking unit cylinder is designed as an anilox roller.
  • the holder 23 is operatively connected to the pin, ie when the pin moves, the holder and with it the guard are also moved.
  • the holder can slide on a sliding surface which is located, for example, on an outer surface of the bearing housing 3 .
  • the protective element can be automatically removed from the inking unit cylinder together with the movement of the drive and in particular together with the bearing 14 .
  • One separate or even manual removal of the protective element is no longer necessary.

Description

Die Erfindung betrifft ein Farbwerk einer Druckmaschine nach sämtlichen Merkmalen des Anspruchs 1 sowie ein Verfahren zum Befestigen wenigstens eines Farbwerkszylinders an einem Schlitten eines Farbwerks nach sämtlichen Merkmalen des Anspruchs 6.The invention relates to an inking unit of a printing press according to all the features of claim 1 and a method for fastening at least one inking unit cylinder to a carriage of an inking unit according to all the features of claim 6.

Zur Abwicklung von Druckaufträgen ist es häufig notwendig, Teile von Farbwerkszylindern, insbesondere deren Funktionselement, in der Regel eine äußere Hülse, zu wechseln. Daher ist es bekannt, einen Farbwerkzylinder während des Druckbetriebs beidendig in jeweils einem Tragelement rotierbar zu lagern, zum Wechseln des Funktionselements allerdings auf einer Seite ein Lagergehäuse vorzusehen, welchem ein Lager zugeordnet ist, in welchem ein Zapfen des Farbwerkzylinders rotierbar gelagert ist, wobei das Lagergehäuse relativ zum Tragelement um wenigstens eine Schwenkachse schwenkbar ist, um den Zapfen des Farbwerkszylinders freizulegen oder zu lagern. Zusätzlich ist eine Arretiervorrichtung vorgesehen, mit welcher das Lagergehäuse an dem Tragelement verbunden ist.To process print jobs, it is often necessary to change parts of inking unit cylinders, in particular their functional element, usually an outer sleeve. It is therefore known to rotatably mount an inking unit cylinder at both ends in a support element during printing, but to change the functional element on one side to provide a bearing housing, to which a bearing is assigned, in which a journal of the inking unit cylinder is rotatably mounted, the bearing housing relative to the support element is pivotable about at least one pivot axis in order to expose or store the journal of the inking unit cylinder. In addition, a locking device is provided, with which the bearing housing is connected to the support element.

Die Anmeldung EP 2 079 588 A1 zeigt ein solches Farbwerk. Nachteilig bei einem solchen Farbwerk ist es allerdings, dass die Arretierung manuell erfolgt, so dass die mechanische Stabilität vom Maschinenbediener abhängt. Qualitativ minderwertige Drucke können die Folge sein.The registration EP 2 079 588 A1 shows such a color work. However, the disadvantage of such an inking unit is that the locking is done manually, so that the mechanical stability depends on the machine operator. This can result in poor-quality prints.

Die DE 1 240 530 B zeigt ein Farbwerk, bei dem eine Schnellabstellung einer Walze durch eine Schwenkbewegung eines Kniespannhebels ermöglicht wird. Ein Freilegen des Zapfens des Farbwerkzylinders wird durch diese Anordnung nicht ermöglicht. WO2008043747 und DE1240530 offenbaren Druckwerke (Farbwerke) mit rotierbaren Druckzylindern und deren Befestigung in Druckmaschinen.the DE 1 240 530 B shows an inking unit in which a quick shutdown of a roller is made possible by a pivoting movement of a toggle lever. This arrangement does not allow the pin of the inking unit cylinder to be exposed. WO2008043747 and DE1240530 disclose printing units (inking units) with rotatable impression cylinders and their attachment in printing presses.

Die Aufgabe der vorliegenden Erfindung ist es daher, ein Farbwerk und ein Verfahren vorzuschlagen, mit welchen reproduzierbar qualitativ bessere Drucke als im Stand der Technik möglich sind.The object of the present invention is therefore to propose an inking unit and a method with which reproducible qualitatively better prints than in the prior art are possible.

Erfindungsgemäß wird diese Aufgabe durch sämtliche Merkmale des Anspruchs 1 gelöst. In den abhängigen Ansprüchen sind mögliche Ausgestaltungen der Erfindung angegeben.According to the invention, this object is achieved by all the features of claim 1. Possible refinements of the invention are specified in the dependent claims.

Gemäß der vorliegenden Erfindung ist vorgesehen, dass die Arretiervorrichtung wenigstens zwei gelenkig miteinander verbundene Hebelelemente umfasst, wobei ein erstes Hebelelement in dem Tragelement gelagert und relativ zu diesem bewegbar ist, insbesondere linear bewegbar ist, und ein zweites Hebelelement schwenkbar an dem Lagergehäuse gelagert ist, wobei die Arretiervorrichtung einen Anschlag für das Lagergehäuse und/oder das zweite Hebelelement umfasst, wobei die Hebelelemente derart bewegbar und miteinander verbunden sind, dass das Lagergehäuse und/oder der zweite Hebelarm mit einer Andrückkraft gegen den Anschlag andrückbar ist.According to the present invention, it is provided that the locking device comprises at least two lever elements which are articulated to one another, a first lever element being mounted in the support element and being movable relative to it, in particular being linearly movable, and a second lever element being pivotably mounted on the bearing housing, wherein the locking device comprises a stop for the bearing housing and/or the second lever element, the lever elements being movable and connected to one another in such a way that the bearing housing and/or the second lever arm can be pressed against the stop with a pressing force.

Durch ein erstes Hebelelement ist also ein zweites Hebelelement bewegbar, wobei das zweite Hebelelement schwenkbar an dem Lagergehäuse angeordnet ist. Durch die Bewegung des ersten Hebelelements wird über das zweite Hebelelement das Lagergehäuse um eine vorzugsweise vertikal verlaufende Schwenkachse geschwenkt. Ein Anschlag, welcher insbesondere dem Tragelement zugeordnet ist, begrenzt dabei die Bewegung des Lagergehäuses. Dabei kann der Anschlag auf das Lagergehäuse und/oder auf das zweite Hebelelement wirken. Damit umfasst sind auch Anbauteile, welche mit dem Lagergehäuse und/oder mit dem zweiten Hebelelement verbunden sind. Dies kann etwa ein leicht auswechselbares Verschleißstück sein, welches an dem Lagergehäuse oder dem Hebelelement angebracht sein kann.A second lever element can thus be moved by a first lever element, with the second lever element being arranged pivotably on the bearing housing. As a result of the movement of the first lever element, the bearing housing is pivoted about a preferably vertically running pivot axis via the second lever element. A stop, which is assigned in particular to the support element, limits the movement of the bearing housing. The stop can act on the bearing housing and/or on the second lever element. This also includes add-on parts which are connected to the bearing housing and/or to the second lever element. This can be, for example, an easily replaceable wear piece which can be attached to the bearing housing or the lever element.

Durch das Vorsehen von zwei gelenkig miteinander verbundenen Hebelelementen kann durch eine passend gewählte Übersetzung eine kleine Bewegung des ersten Hebelelements in eine Andrückkraft übersetzt werden, mit welcher das Lagergehäuse oder das zweite Hebelelement gegen den Anschlag andrückbar ist. Besonders vorteilhaft ist dabei, dass die Andrückkraft vergleichsweise groß sein kann, was zu einer erhöhten Stabilität des gesamten Farbwerks führt. Dadurch können Schwingungen des Farbwerkszylinders vermieden werden, welche im Stand der Technik für Schwingungsstreifen im Druck verantwortlich sind. Insgesamt kann also durch die Erfindung die Qualität der Druckerzeugnisse gesteigert werden.By providing two articulated lever elements, a small movement of the first lever element can be translated into a pressing force by a suitably selected translation, with which the bearing housing or the second lever element can be pressed against the stop. It is particularly advantageous that the pressing force can be comparatively large, which leads to increased stability of the entire inking unit. As a result, vibrations of the inking unit cylinder can be avoided, which in the prior art are responsible for vibration stripes in the print. Overall, the quality of the printed products can be increased by the invention.

In einer vorteilhaften Ausführungsform der Erfindung ist vorgesehen, dass die Schwenkachse in einer Ebene angeordnet ist, welche senkrecht zur Drehachse des Farbwerkszylinders liegt. Damit kann ein platzsparender Aufbau des Farbwerks erreicht werden. In weiterer Ausgestaltung eines erfindungsgemäßen Farbwerks kann das Tragelement relativ zu einem Maschinenstell insbesondere auf Führungen in einer Verschieberrichtung verschiebbar sein. In diesem Fall ist es vorteilhaft, wenn die Schwenkachse auch senkrecht zu dieser Verschieberichtung verläuft.In an advantageous embodiment of the invention, it is provided that the pivot axis is arranged in a plane which is perpendicular to the axis of rotation of the inking unit cylinder. A space-saving construction of the inking unit can thus be achieved. In a further embodiment of an inking unit according to the invention, the support element can be displaceable relative to a machine position, in particular on guides, in a displacement direction. In this case, it is advantageous if the pivot axis also runs perpendicular to this displacement direction.

Erfindungsgemäß ist weiterhin vorgesehen, dass das erste Hebelelement linear bewegbar in dem Tragelement gelagert ist, wobei mit der linearen Bewegung eine Schwenkbewegung des Lagergehäuses hervorrufbar ist. Eine lineare Bewegung ist leicht handhabbar. Hierzu ist ein Linearzylinder oder ein Linearmotor vorgesehen. Ein Linearzylinder kann beispielsweise ein Pneumatikzylinder, insbesondere ein doppelt wirkender Pneumatikzylinder, sein.According to the invention, it is further provided that the first lever element is mounted in the support element so that it can move linearly, it being possible to cause a pivoting movement of the bearing housing with the linear movement. A linear movement is easily manageable. A linear cylinder or a linear motor is provided for this purpose. A linear cylinder can, for example, be a pneumatic cylinder, in particular a double-acting pneumatic cylinder.

In einer vorteilhaften Weiterbildung der Erfindung ist die Bewegung des ersten Hebelelements durch zumindest eine Begrenzungseinrichtung begrenzbar. Eine solche Begrenzungseinrichtung kann ein weiterer Anschlag sein. Die Begrenzungseinrichtung kann aber auch durch den Hub des Pneumatikzylinders definiert sein, also durch die Endpunkte des innerhalb des Pneumatikzylinders bewegbaren Kolbens. Durch die Begrenzung der Bewegung wird verhindert, dass die Andrückkraft wieder übermäßig reduziert wird. Ein solcher Fall wird weiter unten anhand der Figuren erläutert.In an advantageous development of the invention, the movement of the first lever element can be limited by at least one limiting device. Such a limiting device can be another stop. However, the limiting device can also be defined by the stroke of the pneumatic cylinder, ie by the end points of the piston that can be moved within the pneumatic cylinder. Limiting the movement prevents the pressing force from being excessively reduced again. Such a case is explained below with reference to the figures.

In einer bevorzugten Ausführungsform der Erfindung ist es vorgesehen, dass wenn das Lagergehäuse und/oder das zweite Hebelelement an dem Anschlag anliegt, das erste Hebelelement weiter bewegbar ist, wobei mit dem ersten Hebelarm eine Position, in der das erste Hebelelement und das zweite Hebelelement in einem Gleichgewicht zueinander stehen, überschreitbar ist. In diesem Fall nehmen das erste Hebelelement und das zweite Hebelelement einen spitzen Winkel ein. Dieses Gleichgewicht ist in der Regel ein labiles Gleichgewicht, welches entsteht, wenn beispielsweise das erste Hebelelement und das zweite Hebelelement genau senkrecht zueinander stehen. In diesem Fall ist die Andrückkraft maximal. Diese Position wird oft auch als Totpunkt bezeichnet. Wird während der Bewegung des ersten Hebelelements diese Position überschritten und ist die zudem die Bewegung des ersten Hebelelements nach dem Überschreiten dieser Position begrenzt, so drückt weiterhin das erste Hebelelement das zweite Hebelelement und/oder das Lagergehäuse mit der Andrückkraft gegen den Anschlag. Die Gegenkraft zur Andrückkraft drückt nun das erste Hebelelement gegen die Begrenzungseinrichtung, so dass insgesamt eine sehr stabile Arretierung des Lagergehäuses an dem Tragelement erfolgt. Somit werden Schwingungen des Farbwerkszylinders weiter reduziert und die Qualität des Druckerzeugnisses weiter verbessert.In a preferred embodiment of the invention, it is provided that when the bearing housing and/or the second lever element rests against the stop, the first lever element can be moved further, with the first lever arm reaching a position in which the first lever element and the second lever element are in are in balance with each other, can be crossed. In this case, the first lever element and the second lever element assume an acute angle. This equilibrium is usually an unstable equilibrium, which arises when, for example, the first lever element and the second lever element are exactly perpendicular to one another. In this case, the pressing force is maximum. This position is often referred to as the dead center. If this position is exceeded during the movement of the first lever element and if the movement of the first lever element is also limited after this position has been exceeded, the first lever element continues to press the second lever element and/or the bearing housing with the pressing force against the stop. The opposing force to the pressing force now presses the first lever element against the limiting device, so that overall there is a very stable locking of the bearing housing on the support element. Vibrations of the inking unit cylinder are thus further reduced and the quality of the printed product is further improved.

In einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass das Tragelement als Schlitten ausgestaltet ist, welcher relativ zu einem Farbwerksträger verschiebbar ist. Der Farbwerksträger kann dabei Bestandteil eines Druckmaschinengestells sein oder an diesem befestigt sein. Durch diese Ausgestaltung ist es beispielsweise möglich, äußere Hülsen mit stark unterschiedlichen Durchmessern zu verwenden und anschließend den Farbwerkzylinder durchmesserabhängig durch Verschiebung des Schlittens zu positionieren, beispielsweise relativ zu anderen Druckwerkzylindern. In diesem Zusammenhang weist die Erfindung durch die Schwenkbarkeit des Lagergehäuses im Gegensatz zu vielen anderen aus dem Stand der Technik bekannten Lösungen den Vorteil auf, dass zum Freilegen eines Zapfens des Farbwerkzylinders das Tragelement nicht verschoben werden muss. Dies ist insbesondere vorteilhaft bei einer Rasterwalze, welche durch eine Rakelkammer eingefärbt ist. Eine solche Rakelkammer in der Regel an den Tragelementen, welche die Enden des Farbwerkszylinders lagen, angeschlagen.In a preferred embodiment of the invention, it is provided that the support element is designed as a carriage which can be displaced relative to an inking unit carrier. The inking unit carrier can be part of a printing press frame or be attached to it. This configuration makes it possible, for example, to use outer sleeves with very different diameters and then to position the inking unit cylinder depending on the diameter by shifting the carriage, for example relative to other printing unit cylinders. In this context, the pivotability of the bearing housing means that the invention has the advantage, in contrast to many other solutions known from the prior art, that the support element does not have to be displaced in order to expose a journal of the inking unit cylinder. This is particularly advantageous with an anilox roller, which by a Doctor blade chamber is colored. Such a doctor blade chamber is usually attached to the support elements which lie at the ends of the inking unit cylinder.

Die oben genannte Aufgabe wird auch gelöst durch ein Verfahren zum Befestigen wenigstens eines Farbwerkszylinders an wenigstens einem Tragelement eines Farbwerks, mit einem Lagergehäuse, welchem zumindest ein ein Zapfen des Farbwerkszylinders rotierbar lagerndes Lager zugeordnet ist, wobei das Lagergehäuse relativ zum Tragelement um wenigstens eine Schwenkachse geschwenkt wird, um den Zapfen des Farbwerkszylinders freizulegen oder zu lagern, mit einer Arretiervorrichtung, mit welcher das Lagergehäuse an dem Tragelement festgelegt wird, wobei sich das Verfahren dadurch auszeichnet, dass die Arretiervorrichtung wenigstens zwei gelenkig miteinander verbundene Hebelelemente umfasst, wobei ein erstes Hebelelement in dem Tragelement gelagert ist und relativ zu diesem bewegt wird und ein zweites Hebelelement schwenkbar an dem Lagergehäuse gelagert ist, wobei die Arretiervorrichtung einen Anschlag für das Lagergehäuse und/oder das zweite Hebelelement umfasst, wobei die Hebelelemente bewegt werden und miteinander verbunden sind, dass das Lagergehäuse und/oder der zweite Hebelarm mit einer Andrückkraft gegen den Anschlag angedrückt werden, wobei das erste Hebelelement linear bewegbar in dem Tragelement gelagert ist und mittels eines Linearzylinders oder eines Linearmotors linear bewegt wird, wobei mit der linearen Bewegung eine Schwenkbewegung des Lagergehäuses hervorgerufen wird.The above-mentioned object is also achieved by a method for fastening at least one inking unit cylinder to at least one support element of an inking unit, with a bearing housing to which at least one bearing rotatably supporting a journal of the inking unit cylinder is assigned, the bearing housing being pivoted about at least one pivot axis relative to the support element is used in order to expose or store the journal of the inking unit cylinder, with a locking device, with which the bearing housing is fixed to the support element, the method being characterized in that the locking device comprises at least two lever elements which are articulated to one another, a first lever element in the Supporting element is mounted and is moved relative to this and a second lever element is pivotally mounted on the bearing housing, wherein the locking device comprises a stop for the bearing housing and / or the second lever element, wherein the lever elements moves who and are connected to one another in that the bearing housing and/or the second lever arm are pressed against the stop with a pressing force, with the first lever element being mounted in the support element so that it can move linearly and being moved linearly by means of a linear cylinder or a linear motor, with the linear Movement a pivoting movement of the bearing housing is caused.

Mit dem erfindungsgemäßen Verfahren werden dieselben Vorteile erzielt, wie sie im Zusammenhang mit dem erfindungsgemäßen Druckwerk erzielt werden.The same advantages are achieved with the method according to the invention as are achieved in connection with the printing unit according to the invention.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung gehen aus der nachfolgenden Beschreibung hervor, in der unter Bezugnahme auf die Figuren verschiedene Ausführungsbeispiele im Einzelnen erläutert sind. Im Rahmen der gesamten Offenbarung gelten Merkmale und Einzelheiten, die im Zusammenhang mit dem erfindungsgemäßen Verfahren beschrieben sind, selbstverständlich auch im Zusammenhang mit dem erfindungsgemäßen Farbwerk und jeweils umgekehrt, so dass bezüglich der Offenbarung zu den einzelnen Aspekten der Erfindung stets wechselseitig Bezug genommen wird beziehungsweise werden kann. Die einzelnen Figuren zeigen:

Fig.1
Sicht auf ein erfindungsgemäßes Farbwerk in geschlossenem Zustand
Fig. 2
Sicht auf das Farbwerk gemäß Figur 1, jedoch in geöffnetem Zustand.
Fig.3
Ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Farbwerks
Fig. 4
Das Farbwerk gemäß Figur 3, jedoch mit abgezogenen Lagern
Fig. 5
Eine weitere Ausgestaltung eines erfindungsgemäßen Farbwerks
Further advantages, features and details of the invention emerge from the following description, in which various exemplary embodiments are explained in detail with reference to the figures. Features and details that are described in connection with the method according to the invention apply within the scope of the entire disclosure, of course also in connection with the inking unit according to the invention and vice versa, so that with regard to the disclosure of the individual aspects of the invention, mutual reference is or can always be made. The individual figures show:
Fig.1
View of an inking unit according to the invention in the closed state
2
View of the inking unit according to figure 1 , but in open condition.
Fig.3
Another embodiment of an inking unit according to the invention
4
The inking according to figure 3 , but with the bearings removed
figure 5
A further embodiment of an inking unit according to the invention

Die Figur 1 zeigt eine Sicht auf das erfindungsgemäße Farbwerk 1 mit einem Farbwerkszylinder 2 und einem Lagergehäuse 3, in welchem der Zapfen 4 des Farbwerkszylinders lagerbar ist. Dazu weist das Lagergehäuse 3 ein in dieser Figur nicht sichtbares Lager auf, welche den Zapfen 4 umgibt. In diesem Zustand ist das Farbwerk betreibbar. Das Lagergehäuse 3 ist um die Drehachse 5 schwenkbar. Die Drehachse 5, welche durch ein Drehlager verkörperbar ist, stütz sich auf einem Tragelement 6 ab und kann beispielsweise durch eine Höhenverstelleinrichtung in ihrer Höhenposition relativ zum Tragelement verstellbar sein. Dadurch ist es möglich, den Farbwerkszylinder auszurichten. Das Tragelement stützt sich auf nicht gezeigten Bestandteilen eines Maschinengestells ab und wird im Druckbetrieb in der Regel relativ zu diesem unbeweglich gehalten. Das Tragelement 6 trägt ein Ansatzstück 7, welches auch einstückig mit dem Tragelement 6 ausgebildet sein kann. In oder an dem Ansatzstück ist ein erstes Hebelelement 8 linear in Richtung des Doppelpfeils 9 mittels eines nicht gezeigten Verschiebeantriebs verschiebbar, wobei das erste Hebelelement 8 gelenkig mit einem zweiten Hebelelement 10 verbunden ist. Hierzu dient ein erstes Gelenk 11. Mit einem zweiten Gelenk 12 ist das zweite Hebelelement 10 mit dem Lagergehäuse gelenkig verbunden. In der in der Fig. 1 gezeigten Position liegt das Hebelelement 10 nahe dem Gelenk 12 an einer Anschlagkante 13 des Ansatzstücks 7 an. Dabei nehmen das erste Hebelelement 8 und das zweite Hebelelement 10 einen spitzen Winkel α ein, also einen Winkel von weniger als 90 ein, bevorzugt zwischen 80 und 89 Grad, insbesondere zwischen 85 und 89 Grad. Da das erste Hebelelement 11 in seiner Bewegung durch eine nicht dargestellte Begrenzungseinrichtung begrenzt ist, kann eine Kraft, die beispielsweise von dem Farbwerkszylinder 2 auf das Lagergehäuse 3 übertragen werden, zwar auf das erste Hebelelement 8 übertragen werden, führt aber zu keiner Bewegung des Lagergehäuses 3 relativ zum Tragelement 6. Damit ist eine hohe Druckqualität erreichbar.the figure 1 shows a view of the inking unit 1 according to the invention with an inking unit cylinder 2 and a bearing housing 3, in which the pin 4 of the inking unit cylinder can be stored. For this purpose, the bearing housing 3 has a bearing which is not visible in this figure and surrounds the pin 4 . The inking unit can be operated in this state. The bearing housing 3 can be pivoted about the axis of rotation 5 . The axis of rotation 5, which can be embodied by a pivot bearing, is supported on a support element 6 and can be adjustable in its height position relative to the support element, for example by a height adjustment device. This makes it possible to align the inking unit cylinder. The support element is supported on components of a machine frame (not shown) and is generally held immovable relative to this during printing operation. The support element 6 carries an attachment 7, which can also be designed in one piece with the support element 6. A first lever element 8 can be displaced linearly in or on the endpiece in the direction of the double arrow 9 by means of a displacement drive (not shown), the first lever element 8 being articulated to a second lever element 10 . A first joint 11 serves for this purpose. With a second joint 12, the second lever element 10 is connected in an articulated manner to the bearing housing. In the in the 1 The position shown is the lever element 10 near the joint 12 on a stop edge 13 of the extension piece 7. Here, take the first lever element 8 and the second Lever element 10 an acute angle α, ie an angle of less than 90, preferably between 80 and 89 degrees, in particular between 85 and 89 degrees. Since the movement of the first lever element 11 is limited by a limiting device (not shown), a force that is transmitted, for example, from the inking unit cylinder 2 to the bearing housing 3 can be transmitted to the first lever element 8, but does not lead to any movement of the bearing housing 3 relative to the support element 6. A high print quality can thus be achieved.

In der Figur 2 wurde nun im Vergleich zur Figur 1 das erste Hebelelement von dem Farbwerkszylinder 2 weg bewegt, so dass nun das erste Hebelelement und das zweite Hebelelement einen stumpfen Winkel α zueinander einnehmen. Damit wurde ebenfalls das Lagergehäuse 3 durch ein Schwenken um die Drehachse 5 abgeschwenkt, so dass nun der Zapfen 4 freiliegt und beispielsweise eine äußere Hülse des Farbwerkszylinders 2 abziehbar ist. Dazu ist es nicht erforderlich, den das Tragelement relativ zum Farbwerkzylinder zu bewegen.In the figure 2 was now compared to figure 1 the first lever element is moved away from the inking unit cylinder 2, so that the first lever element and the second lever element are now at an obtuse angle α to one another. The bearing housing 3 was thus also pivoted away by pivoting about the axis of rotation 5, so that the pin 4 is now exposed and, for example, an outer sleeve of the inking unit cylinder 2 can be pulled off. For this it is not necessary to move the support element relative to the inking unit cylinder.

Die Figur 3 zeigt ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Farbwerks 1. Zusätzlich zeigt diese Figur einen Schnitt durch einen Teil des Lagergehäuses 3, so dass man verschiedene Funktionen innerhalb des Farbwerks 1 besser erkennen kann. Wenigstens ein Lager 14 ist beispielsweise als Rollenlager ausgestaltet und in oder an einem Lagerhalter 15 befestigt. Dieser Lagerhalter 15 ist beispielsweise entlang von Gleitflächen relativ zum Lagergehäuse 3 verschiebbar, wobei der Lagerhalter 15 und damit das wenigstens eine Lager 14 auf den Zapfen 4 aufschiebbar ist, so dass sich dieses und mit ihm der Farbwerkszylinder 2 nicht mehr in radialer Richtung relativ zum Lagergehäuse 3 bewegen kann.the figure 3 shows a further exemplary embodiment of an inking unit 1 according to the invention. This figure also shows a section through part of the bearing housing 3, so that different functions within the inking unit 1 can be seen better. At least one bearing 14 is configured as a roller bearing, for example, and is fastened in or on a bearing holder 15 . This bearing holder 15 can be displaced, for example, along sliding surfaces relative to the bearing housing 3, with the bearing holder 15 and thus the at least one bearing 14 being able to be pushed onto the journal 4, so that this and with it the inking unit cylinder 2 no longer move in the radial direction relative to the bearing housing 3 can move.

Zum Verschieben des Lagerhalters 15 ist ein Antrieb 16 vorgesehen, welcher insbesondere vom Lagergehäuse 3 umfasst ist. Der Antrieb 16 kann als Kolbenzylindereinheit ausgestaltet sein und mittels einer am Kolben 17 befestigten Schub-/Zugstange 18 den Lagerhalter 15 verschieben.To move the bearing holder 15, a drive 16 is provided, which is in particular encompassed by the bearing housing 3. The drive 16 can be designed as a piston-cylinder unit and can move the bearing holder 15 by means of a push/pull rod 18 attached to the piston 17 .

Die Figur 4 zeigt die Ausführungsform der Figur 3, wobei jedoch der Lagerhalter 15 von dem Zapfen 4 abgezogen ist. In diesem Zustand kann nun das Lagergehäuse abgeschwenkt werden, wie es bereits im Zusammenhang mit den Figuren 1 und 2 beschrieben wurde.the figure 4 shows the embodiment of figure 3 , but the bearing holder 15 is withdrawn from the pin 4. In this state, the bearing housing can now be pivoted, as already in connection with the Figures 1 and 2 was described.

Die Figur 5 zeigt eine Weiterbildung eines erfindungsgemäßen Farbwerks 1, insbesondere eines nach den Figuren 3 und 4. Diese vorteilhafte Weiterbildung umfasst wiederum einen am Lagergehäuse angeordneten Antrieb 16, mit welchem insbesondere ein Lager 14 auf den Zapfen 4 aufschiebbar und wieder vom Zapfen 4 abziehbar ist. Über eine beliebig geartete Verbindung, insbesondere einer mechanischen Verbindung, kann mittels des Antriebs 16 ein Schutzelement 20 verschiebbar sein. Insbesondere kann das Lager 14 in einem Lagerhalter 15 angeordnet sein und der Lagerhalter 15 einen Stift 21 umfassen, welcher beispielsweise durch ein Langloch 22 aus dem Lagergehäuse 3 herausragt. Dieser Stift 21 ist entsprechend mit dem Lagerhalter 15 verschiebbar. Der Stift 21 kann auch direkt einer Schub-/Zugstange 18 eines als Kolbenzylindereinheit ausgestalteten Antriebs 16 angeordnet sein.the figure 5 shows a development of an inking unit 1 according to the invention, in particular one after Figures 3 and 4 . This advantageous development in turn comprises a drive 16 arranged on the bearing housing, with which in particular a bearing 14 can be pushed onto the pin 4 and pulled off the pin 4 again. A protective element 20 can be displaceable by means of the drive 16 via any type of connection, in particular a mechanical connection. In particular, the bearing 14 can be arranged in a bearing holder 15 and the bearing holder 15 can include a pin 21 which projects out of the bearing housing 3 through a slot 22, for example. This pin 21 can be displaced with the bearing holder 15 accordingly. The pin 21 can also be arranged directly on a push/pull rod 18 of a drive 16 configured as a piston-cylinder unit.

Das Schutzelement 20 umfasst insbesondere einen Halter 23 sowie den eigentlichen Schutz 24, welcher vom Halter 23 gehalten wird. Ein solcher Schutz 24 kann Teile der Stirnseite und/oder Teile der Umfangsfläche in Stirnseitennähe des Farbwerkzylinders 2 abdecken, so dass beispielsweise eine Berührung des Farbwerkzylinders 2 durch einen Bediener vermieden wird. Auch kann ein solcher Schutz ein Spritzschutz sein, wobei insbesondere vermieden wird, dass Farbe von dem Farbwerkzylinder in die Umgebung gelangt. Dies ist vor allem dann vorteilhaft, wenn der Farbwerkzylinder als Rasterwalze ausgestaltet ist. Der Halter 23 ist mit dem Stift wirkverbunden, d. h. bei einer Bewegung des Stifts wird auch der Halter und mit ihm der Schutz bewegt. Der Halter kann dabei auf einer Gleitfläche, welche sich beispielsweise auf einer Außenoberfläche des Lagergehäuses 3 befindet, gleiten. Mit dieser Ausgestaltung eines erfindungsgemäßen Farbwerks kann das Schutzelement automatisch zusammen mit der Bewegung des Antriebs und insbesondere zusammen mit dem Lager 14 von dem Farbwerkzylinder entfernt werden. Eine separate oder gar manuelle Entfernung des Schutzelements ist nicht mehr notwendig.The protective element 20 includes in particular a holder 23 and the actual protection 24 which is held by the holder 23 . Such a guard 24 can cover parts of the end face and/or parts of the peripheral surface in the vicinity of the end face of the inking unit cylinder 2, so that, for example, an operator is prevented from touching the inking unit cylinder 2. Such a protection can also be a splash guard, in which case it is avoided in particular that paint from the inking unit cylinder gets into the environment. This is particularly advantageous when the inking unit cylinder is designed as an anilox roller. The holder 23 is operatively connected to the pin, ie when the pin moves, the holder and with it the guard are also moved. In this case, the holder can slide on a sliding surface which is located, for example, on an outer surface of the bearing housing 3 . With this configuration of an inking unit according to the invention, the protective element can be automatically removed from the inking unit cylinder together with the movement of the drive and in particular together with the bearing 14 . One separate or even manual removal of the protective element is no longer necessary.

Claims (6)

  1. An inking unit (1) of a printing machine with at least one inking unit cylinder (2) and with at least one support element (6),
    with a bearing housing (3), to which at least one bearing (14) which rotatably supports a journal (4) of the inking unit cylinder (2) is assigned, wherein the bearing housing (3) is pivotable about at least one pivot axis (5) relative to the support element (6), in order to expose or to support the journal (4) of the inking unit cylinder (2),
    with a locking device, with which the bearing housing (3) can be fixed to the support element (6),
    characterized in that
    the locking device comprises at least two lever elements (8, 10) articulately connected to one another, wherein a first lever element (8) is mounted in the support element and is movable relative to said support element and a second lever element (10) is pivotably mounted on the bearing housing (3),
    wherein the locking device comprises a stop (13) for the bearing housing (3) and/or the second lever element (10), wherein the lever elements (8, 10) are movable and connected to one another in such a manner that the bearing housing (3) and/or the second lever element (10) can be pressed with a pressing force against the stop (13),
    wherein the first lever element (8) is mounted in a linearly movable manner in the support element (6) by means of a linear cylinder or a linear motor, wherein a pivot movement of the bearing housing (3) can be produced with the linear movement.
  2. The inking unit (1) according to claim 1,
    characterized in that
    the pivot axis (5) is arranged in a plane, which lies perpendicular to the axis of rotation of the inking unit cylinder (2).
  3. The inking unit (1) according to any one of the preceding claims,
    characterized in that
    if the bearing housing (3) and/or the second lever element (10) abuts against the stop (13), the first lever element (8) can be moved further, wherein with the first lever element (8) a position, in which the first lever element (8) and the second lever element (10) are in balance with each other, can be exceeded.
  4. The inking unit (1) according to any one of the preceding claims,
    characterized in that
    the movement of the first lever element (8) can be limited by at least one limiting device.
  5. The inking unit (1) according to any one of the preceding claims,
    characterized in that
    the support element (6) is designed as a carriage, which is displaceable relative to an inking unit carrier.
  6. A method for fastening at least one inking unit cylinder (2) to at least one support element (6) of an inking unit (1),
    with a bearing housing (3), to which at least one bearing (14) which rotatably supports a journal (4) of the inking unit cylinder (2) is assigned, wherein the bearing housing (3) is pivoted about at least one pivot axis (5) relative to the support element (6), in order to expose or to support the journal (4) of the inking unit cylinder (2),
    with a locking device, with which the bearing housing (3) is fixed to the support element (6),
    characterized in that
    the locking element comprises at least two lever elements (8, 10) articulately connected to one another, wherein a first lever element (8) is mounted in the support element (6) and is moved relative to said support element and a second lever element (10) is pivotably mounted on the bearing housing (3),
    wherein the locking device comprises a stop (13) for the bearing housing (3) and/or the second lever element (10), wherein the lever elements (8, 10) are moved and connected to one another in such a manner that the bearing housing (3) and/or the second lever element (10) can be pressed with a pressing force against the stop (13), wherein the first lever element (8) is mounted in a linearly movable manner in the support element (6) and is moved by means of a linear cylinder or a linear motor, wherein a pivot movement of the bearing housing (3) is produced with the linear movement.
EP19210034.5A 2018-11-19 2019-11-19 Inking unit of a printing machine and method for fixing at least one inking cylinder in a slidable carriage of an inking unit Active EP3653383B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018219813 2018-11-19

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EP3653383A1 EP3653383A1 (en) 2020-05-20
EP3653383B1 true EP3653383B1 (en) 2022-06-15

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ES (1) ES2922160T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240530B (en) * 1963-07-19 1967-05-18 Maschf Augsburg Nuernberg Ag Storage for application and distribution rollers in inking units for rotary printing machines
DE4041497A1 (en) * 1990-12-22 1992-06-25 Roland Man Druckmasch STORAGE FOR A PRINTING CYLINDER
US5241905A (en) * 1992-10-27 1993-09-07 Heidelberg Harris Inc. Printing unit with releasable bearing clamp
EP2079588A1 (en) 2006-10-10 2009-07-22 Windmöller & Hölscher KG Supporting bearing for an ink transfer roll or back-pressure roll

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ES2922160T3 (en) 2022-09-09

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