EP2202072B1 - Releasable and slidable bearing assembly for a printing press - Google Patents

Releasable and slidable bearing assembly for a printing press Download PDF

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Publication number
EP2202072B1
EP2202072B1 EP09178311.8A EP09178311A EP2202072B1 EP 2202072 B1 EP2202072 B1 EP 2202072B1 EP 09178311 A EP09178311 A EP 09178311A EP 2202072 B1 EP2202072 B1 EP 2202072B1
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EP
European Patent Office
Prior art keywords
bearing
inner ring
cylinder
friction bearing
longitudinal axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP09178311.8A
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German (de)
French (fr)
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EP2202072A1 (en
Inventor
Thomas Dittenhöfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Publication of EP2202072A1 publication Critical patent/EP2202072A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/085—Cylinders with means for preventing or damping vibrations or shocks
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

  • the invention relates to a releasable and movable bearing assembly for intercepting the free ends formed as a journal of cylinders or rollers mounted cantilevered in a printing machine, in particular a flexographic printing press, with the features of the preamble of claim 1. Furthermore, the invention relates to a printing press, in particular a flexographic printing press, with such a bearing arrangement.
  • Such a bearing arrangement generally comprises a transverse to the cylinder or roll longitudinal axis movable and / or parallel to the cylinder or roll longitudinal axis displaceable bearing housing and a rolling bearing.
  • the rolling bearing is connected to the bearing housing in such a way that it can be withdrawn from the journal for releasing the pin of the cylinder or roller via a movement of the bearing housing.
  • a bearing arrangement of the type mentioned is, for example, in the DE 197 05 369 A1 described.
  • the bearing assembly comprises at least one bearing block with parallel guides for receiving a holding head, which is axially displaceable by means of a pressure medium-piston-cylinder unit with respect to the parallel guides.
  • the holding head receives in a central recess on a rolling bearing, which is carried along at an axial displacement of the holding head.
  • the rolling bearing in turn serves for the floating mounting of the shaft journal of a printing or anilox roller and can be subtracted via an axial displacement of the holding head of the shaft journal or pushed onto the shaft journal.
  • the bearing has a certain radial play.
  • Another bearing arrangement for a printing press is exemplary in the DE 200 16 711 disclosed.
  • Object of the present invention is to provide a bearing assembly for a printing machine with very little clearance, so that even without expensive readjustment of the bearing assembly high print quality is achievable.
  • the bearing assembly should be simple and inexpensive to produce.
  • the object is achieved by a bearing arrangement with the features of claim 1 and a printing machine with the features of claim 7.
  • the proposed bearing arrangement comprises at least one transverse to the cylinder or roll axis A movable and / or parallel to the cylinder or roll axis A displaceable bearing housing and a rolling bearing
  • the rolling bearing comprises a rolling bearing outer ring and cage-guided rolling elements, the rolling bearing outer ring in a transverse to the cylinder or Roll longitudinal axis A aligned fastening plane B1 force and / or positively connected to the bearing housing.
  • the pin of the cylinder or the roller is designed as a roller bearing inner ring or provided a separate roller bearing inner ring, which is non-positively and / or positively connected to the pin.
  • the proposed embodiment of a bearing arrangement has a favorable effect in terms of a reduction of the bearing clearance.
  • a rolling bearing is a precision component, so that already for this reason a very small clearance between the bearing outer ring and bearing inner ring, on the other radial play is avoided in that the outer ring of the bearing is not arranged as usual in a recess of the bearing housing, but axially flanged to the bearing housing.
  • the fit influence in Area of connection of the rolling bearing with the bearing housing thus eliminated completely.
  • the roller bearing inner ring is formed by a separate component, in which case roller bearing inner ring and roller bearing outer ring are designed as a high-precision paired bearing unit.
  • the highly accurately paired bearing unit is designed as a roller, cylindrical roller or needle roller bearings. Due to the precise pairing, the bearing arrangement is largely free of play, so that the cylinder or roller is sufficiently fixed, at least in the radial direction, to ensure high print quality.
  • the roller bearing inner ring can be positively and / or positively connected to the journal in a fastening plane B2 which is likewise aligned transversely to the cylinder or roller longitudinal axis A.
  • the inner ring of the rolling bearing according to the outer ring is preferably flanged axially.
  • the front side of the pin serves as a mounting plane.
  • a contact shoulder may be formed, on which the inner ring can be supported.
  • the rolling bearing outer ring is thick-walled and / or the rolling bearing inner ring is solid.
  • a thick-walled or massive design of the bearing rings ensures high dimensional stability of the rolling bearing components under load. Because of this, the required low bearing clearance thus remains under load, that is, in the printing operation, received.
  • a thick-walled or massive design of the rolling bearing outer ring also proves to be particularly advantageous if the roller bearing outer ring, according to another preferred embodiment, at least one bore for receiving a fastening screw, by means of which he on the bearing housing is fastened.
  • the bore extends preferably parallel to the cylinder or roller longitudinal axis A.
  • the at least one fastening screw ensures a positive connection of the roller bearing outer ring with the bearing housing.
  • the attachment of the rolling bearing inner ring on the pin by means of one or more screws.
  • the rolling bearing inner ring has for this purpose at least one bore for receiving a fastening screw, by means of which the roller bearing inner ring can be fastened to the journal.
  • the bore preferably runs parallel to the cylinder or roller longitudinal axis (A).
  • the bore is preferably arranged centrally in the inner ring.
  • bearing arrangements according to the invention are particularly suitable for intercepting the free ends formed as a journal of cantilevered cylinders or rollers, a printing machine, in particular a flexographic printing machine, proposed with such a bearing arrangement for solving the above problem.
  • the bearing assembly may have one or more of the features described in detail above.
  • a preferred embodiment of a bearing arrangement according to the invention is described below with reference to the single attached drawing. This shows a section of a bearing assembly according to the invention in the region of the rolling bearing in a longitudinal section.
  • the illustrated bearing assembly 10 includes a bearing housing 11 to which a rolling bearing outer ring 12 is axially flanged in a mounting plane B1. Due to the axial attachment of the roller bearing outer ring 12 on the bearing housing 11 manufacturing tolerances of the components on the bearing clearance of Bearing arrangement no influence.
  • mounting screws 14 are provided for fastening the roller bearing outer ring 12 on the bearing housing 11 .
  • holes 15 are provided in the roller bearing outer ring 12 at the same radial distance from the cylinder or roller longitudinal axis A, which extend parallel to the cylinder or roller longitudinal axis A. Due to the thick-walled design, the outer ring still has a high dimensional stability.
  • Inner peripheral side of the outer ring 12 carries cage-guided rolling elements 13, which in the present case are cylindrical and arranged in a row. The rolling elements 13 are held and guided by a cage 19.
  • the bearing assembly 10 comprises a roller bearing inner ring 16, which is connected in a mounting plane B2, which is also aligned transversely to the cylinder or roll longitudinal axis A, with the pin 20 of a cylinder or a roller 21.
  • the roller bearing inner ring 16 is therefore also axially attached, so that here also manufacturing tolerances have no effect on the harmful in terms of print quality bearing clearance.
  • the inner ring 16 is positively and positively connected via a fastening screw 17 with the pin 20, the inner ring 16 is a part of the bearing assembly, but remains on the pin 20 during sleeve replacement.
  • it can be dispensed with an inner ring 16 as a separate component when the pin 20 is formed as WälzConsequently Chemistry.
  • this and the outer ring are designed as highly accurately paired bearing components, so that due to production already a very small clearance is available.
  • the intended for attachment of the inner ring 16 on the pin 20 screw 17 is guided through a central bore 18 in the inner ring 16.
  • the bore 18 extends coaxially to the cylinder or roller longitudinal axis A.
  • a high dimensional stability of the inner ring 16 ensures its otherwise massive design.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft eine lös- und verfahrbare Lageranordnung zur Abfangung der als Zapfen ausgebildeten freien Enden von einendig fliegend gelagerten Zylindern oder Walzen in einer Druckmaschine, insbesondere einer Flexodruckmaschine, mit den Merkmalen des Oberbegriffes des Anspruchs 1. Des Weiteren betrifft die Erfindung eine Druckmaschine, insbesondere eine Flexodruckmaschine, mit einer solchen Lageranordnung.The invention relates to a releasable and movable bearing assembly for intercepting the free ends formed as a journal of cylinders or rollers mounted cantilevered in a printing machine, in particular a flexographic printing press, with the features of the preamble of claim 1. Furthermore, the invention relates to a printing press, in particular a flexographic printing press, with such a bearing arrangement.

Bei Druckmaschinen, insbesondere Flexodruckmaschinen, erfolgt der Wechsel des zu druckenden Bildes durch den Wechsel einer Klischee tragenden Druckzylinderhülse, dem sogenannten "Sleeve". Um den Sleeve wechseln zu können, muss der jeweilige Druckzylinder oder die jeweilige Walze zumindest zeitweise an einem Ende frei zugänglich sein. Daher sind derartige Zylinder oder Walzen in der Regel einendig fliegend gelagert. Das heißt, dass an dem fliegend gelagerten Ende eine Lageranordnung zur Aufnahme eines Wellenzapfens eines Zylinders oder einer Walze vorgesehen ist, die ein Öffnen der Lagerstelle und damit ein Abstreifen und Aufziehen eines Sleeves auf den Zylinder oder die Walze ermöglicht. Eine solche Lageranordnung umfasst in der Regel ein quer zur Zylinder- oder Walzenlängsachse verfahrbares und/oder parallel zur Zylinder- oder Walzenlängsachse verschiebbares Lagergehäuse sowie ein Wälzlager. Das Wälzlager ist derart mit dem Lagergehäuse verbunden, dass es zur Freigabe des Zapfens des Zylinders oder Walze über eine Bewegung des Lagergehäuses vom Zapfen abgezogen werden kann.In printing machines, especially flexographic printing presses, the change of the image to be printed by changing a cliché-carrying pressure cylinder sleeve, the so-called "sleeve" takes place. In order to change the sleeve, the respective printing cylinder or the respective roller must be at least temporarily freely accessible at one end. Therefore, such cylinders or rollers are usually mounted on one end flying. This means that a bearing arrangement for receiving a shaft journal of a cylinder or a roller is provided on the cantilevered end, which opens the Bearing and thus stripping and pulling a sleeve on the cylinder or roller allows. Such a bearing arrangement generally comprises a transverse to the cylinder or roll longitudinal axis movable and / or parallel to the cylinder or roll longitudinal axis displaceable bearing housing and a rolling bearing. The rolling bearing is connected to the bearing housing in such a way that it can be withdrawn from the journal for releasing the pin of the cylinder or roller via a movement of the bearing housing.

Eine Lageranordnung der eingangs genannten Art wird beispielsweise in der DE 197 05 369 A1 beschrieben. Die Lageranordnung umfasst mindestens einen Lagerbock mit parallelen Führungen zur Aufnahme eines Haltekopfes, der mittels einer Druckmittel-Kolben-Zylindereinheit gegenüber den parallelen Führungen axial verschiebbar ist. Der Haltekopf nimmt in einer zentralen Ausnehmung ein Wälzlager auf, das bei einer axialen Verschiebung des Haltekopfes mitgeführt wird. Das Wälzlager wiederum dient der fliegenden Lagerung des Wellenzapfens einer Druck- oder Rasterwalze und kann über eine axiale Verschiebung des Haltekopfes vom Wellenzapfen abgezogen oder auf den Wellenzapfen aufgeschoben werden. Um ein einfaches Aufschieben des Lagers auf den Wellzapfen zu ermöglichen, weist das Lager ein gewisses radiales Spiel auf. Ein solches Lagerspiel wirkt sich jedoch im Hinblick auf die Druck-quantität der Druckmaschine negativ aus, da bei vorhandenem radialen Spiel die Druck- oder Rasterwalze Schwingungen erfährt, die sich nachteilig auf die Druckqualität auswirken. In der DE 197 05 369 A1 werden daher zur Reduzierung des Lagerspiels zusätzliche Einrichtungen zur seitlichen Justierung der Lager vorgeschlagen.A bearing arrangement of the type mentioned is, for example, in the DE 197 05 369 A1 described. The bearing assembly comprises at least one bearing block with parallel guides for receiving a holding head, which is axially displaceable by means of a pressure medium-piston-cylinder unit with respect to the parallel guides. The holding head receives in a central recess on a rolling bearing, which is carried along at an axial displacement of the holding head. The rolling bearing in turn serves for the floating mounting of the shaft journal of a printing or anilox roller and can be subtracted via an axial displacement of the holding head of the shaft journal or pushed onto the shaft journal. To allow a simple sliding of the bearing on the corrugated, the bearing has a certain radial play. However, such a bearing clearance has a negative effect on the printing quantity of the printing press, since with existing radial play the printing or anilox roller experiences oscillations which have an adverse effect on the print quality. In the DE 197 05 369 A1 are therefore proposed to reduce the bearing clearance additional facilities for lateral adjustment of the bearing.

Eine weitere Lageranordnung für eine Druckmaschine ist beispielhaft in der DE 200 16 711 offenbart.Another bearing arrangement for a printing press is exemplary in the DE 200 16 711 disclosed.

Aufgabe der vorliegenden Erfindung ist es, eine Lageranordnung für eine Druckmaschine mit sehr geringem Lagerspiel bereit zu stellen, so dass auch ohne aufwendiges Nachjustieren der Lageranordnung eine hohe Druckqualität erzielbar ist. Darüber hinaus soll die Lageranordnung einfach aufgebaut und kostengünstig herstellbar sein.Object of the present invention is to provide a bearing assembly for a printing machine with very little clearance, so that even without expensive readjustment of the bearing assembly high print quality is achievable. In addition, the bearing assembly should be simple and inexpensive to produce.

Die Aufgabe wird gelöst durch eine Lageranordnung mit den Merkmalen des Anspruchs1 sowie eine Druckmaschine mit den Merkmalen des Anspruchs 7.The object is achieved by a bearing arrangement with the features of claim 1 and a printing machine with the features of claim 7.

Vorteilhafte Weiterbildungen der erfindungsgemäßen Lageranordnung werden in den direkt oder indirekt auf Anspruch 1 rückbezogenen Unteransprüchen beschrieben.Advantageous developments of the bearing assembly according to the invention are described in the dependent directly or indirectly to claim 1 dependent claims.

Die vorgeschlagene Lageranordnung umfasst wenigstens ein quer zur Zylinder- oder Walzenlängsachse A verfahrbares und/oder parallel zur Zylinder- oder Walzenlängsachse A verschiebbares Lagergehäuse sowie ein Wälzlager, Erfindungsgemäß umfasst das Wälzlager einen Wälzlageraußenring und käfiggeführte Wälzkörper, wobei der Wälzlageraußenring in einer quer zur Zylinder- oder Walzenlängsachse A ausgerichteten Befestigungsebene B1 kraft- und/oder formschlüssig mit dem Lagergehäuse verbunden ist. Darüber hinaus ist der Zapfen des Zylinders bzw. der Walze als Wälzlagerinnenring ausgebildet oder ein separater Wälzlagerinnenring vorgesehen, der kraft- und/oder formschlüssig mit dem Zapfen verbindbar ist. Zum Lösen der Lageranordnung muss demnach der Wälzlageraußenring vom Innenring oder, sofern der Zapfen als Innenring dient, vom Zapfen gezogen werden. Beim Wechsel eines Sleeves verbleibt somit ein separater Innenring als eigentlicher Bestandteil des Wälzlagers auf dem Zapfen. Die Lageranordnung wird somit im Bereich des Wälzlagers gelöst.The proposed bearing arrangement comprises at least one transverse to the cylinder or roll axis A movable and / or parallel to the cylinder or roll axis A displaceable bearing housing and a rolling bearing, according to the invention the rolling bearing comprises a rolling bearing outer ring and cage-guided rolling elements, the rolling bearing outer ring in a transverse to the cylinder or Roll longitudinal axis A aligned fastening plane B1 force and / or positively connected to the bearing housing. In addition, the pin of the cylinder or the roller is designed as a roller bearing inner ring or provided a separate roller bearing inner ring, which is non-positively and / or positively connected to the pin. To release the bearing assembly, therefore, the roller bearing outer ring from the inner ring or, if the pin serves as an inner ring, must be pulled by the pin. When changing a sleeve thus a separate inner ring remains as an actual part of the bearing on the pin. The bearing assembly is thus solved in the region of the rolling bearing.

Die vorgeschlagene Ausführung einer Lageranordnung wirkt sich günstig im Hinblick auf eine Reduzierung des Lagerspiels aus. Denn zum Einen stellt ein Wälzlager ein Präzisionsbauteil dar, so dass bereits aus diesem Grund ein sehr geringes Lagerspiel zwischen Lageraußenring und Lagerinnenring besteht, zum Anderen wird radiales Spiel dadurch vermieden, dass der Außenring des Wälzlagers nicht wie üblich in einer Ausnehmung des Lagergehäuses angeordnet, sondern axial am Lagergehäuse angeflanscht ist. Der Passungseinfluss im Bereich der Verbindung des Wälzlagers mit dem Lagergehäuse entfällt somit vollständig.The proposed embodiment of a bearing arrangement has a favorable effect in terms of a reduction of the bearing clearance. For one, a rolling bearing is a precision component, so that already for this reason a very small clearance between the bearing outer ring and bearing inner ring, on the other radial play is avoided in that the outer ring of the bearing is not arranged as usual in a recess of the bearing housing, but axially flanged to the bearing housing. The fit influence in Area of connection of the rolling bearing with the bearing housing thus eliminated completely.

Dient der Zapfen des Zylinders oder der Walze selbst als Wälzlagerinnenring, ist weiterhin vorgesehen, dass der Zapfen - zumindest im Bereich der Lauffläche der Wälzkörper - gehärtet und geschliffen ist. Die Herstellung des Zapfens erfordert somit zwar einen erhöhten Fertigungsaufwand, geht aber mit dem Verzicht auf einen Innenring als zusätzliches Bauteil einher.Serves the journal of the cylinder or the roller itself as a roller bearing inner ring, it is further provided that the pin - at least in the region of the tread of the rolling elements - hardened and ground. The production of the pin Although thus requires an increased production cost, but goes with the waiver of an inner ring as an additional component.

Bevorzugt wird der Wälzlagerinnenring jedoch von einem separaten Bauteil gebildet, wobei dann Wälzlagerinnenring und Wälzlageraußenring als hochgenaue gepaarte Lagereinheit ausgeführt sind. Weiterhin bevorzugt ist die hochgenau gepaarte Lagereinheit als Rollen-, Zylinderrollen- oder Nadellager ausgebildet. Aufgrund der präzisen Paarung ist die Lageranordnung weitestgehend spielfrei, so dass der Zylinder oder die Walze zumindest in radialer Richtung ausreichend fixiert ist, um eine hohe Druckqualität zu gewährleisten.Preferably, however, the roller bearing inner ring is formed by a separate component, in which case roller bearing inner ring and roller bearing outer ring are designed as a high-precision paired bearing unit. Further preferably, the highly accurately paired bearing unit is designed as a roller, cylindrical roller or needle roller bearings. Due to the precise pairing, the bearing arrangement is largely free of play, so that the cylinder or roller is sufficiently fixed, at least in the radial direction, to ensure high print quality.

Erfindungsgemäß ist der Wälzlagerinnenring in einer ebenfalls quer zur Zylinder- oder Walzenlängsachse A ausgerichteten Befestigungsebene B2 kraft- und/oder formschlüssig mit dem Zapfen verbindbar. Demnach wird auch der Innenring des Wälzlagers entsprechend dem Außenring bevorzugt axial angeflanscht. Die Stirnseite des Zapfens dient dabei als Befestigungsebene. An dieser kann zusätzlich eine Anlageschulter ausgebildet sein, an der sich der Innenring abstützen kann. Indem der Innenring axial an den Zapfen angesetzt wird, entfällt auch hier jeglicher Passungseinfluss. Die vorgeschlagene Art der Verbindung des Innenringes mit dem Zapfen wirkt sich somit positiv auf eine Reduzierung des Lagerspiels der Lageranordnung aus.According to the invention, the roller bearing inner ring can be positively and / or positively connected to the journal in a fastening plane B2 which is likewise aligned transversely to the cylinder or roller longitudinal axis A. Accordingly, the inner ring of the rolling bearing according to the outer ring is preferably flanged axially. The front side of the pin serves as a mounting plane. At this additionally a contact shoulder may be formed, on which the inner ring can be supported. By the inner ring is attached axially to the pin, also eliminates any fit influence here. The proposed type of connection of the inner ring with the pin thus has a positive effect on a reduction of the bearing clearance of the bearing assembly.

Nach einer weiteren bevorzugten Ausführungsform ist der Wälzlageraußenring dickwandig und/oder der Wälzlagerinnenring massiv ausgebildet. Eine dickwandige bzw. massive Ausführung der Lagerringe gewährleistet eine hohe Formstabilität der Wälzlagerkomponenten unter Belastung. Aufgrund dessen bleibt das geforderte geringe Lagerspiel somit auch unter Belastung, das heißt im Druckbetrieb, erhalten.According to a further preferred embodiment, the rolling bearing outer ring is thick-walled and / or the rolling bearing inner ring is solid. A thick-walled or massive design of the bearing rings ensures high dimensional stability of the rolling bearing components under load. Because of this, the required low bearing clearance thus remains under load, that is, in the printing operation, received.

Eine dickwandige bzw. massive Ausführung des Wälzlageraußenringes erweist sich zudem insbesondere dann als vorteilhaft, wenn der Wälzlageraußenring, gemäß einer weiteren bevorzugten Ausführungsform, wenigstens eine Bohrung zur Aufnahme einer Befestigungsschraube aufweist, mittels derer er am Lagergehäuse befestigbar ist. Die Bohrung verläuft dabei vorzugsweise parallel zur Zylinder- oder Walzenlängsachse A. Die wenigstens eine Befestigungsschraube gewährleistet eine formschlüssige Verbindung des Wälzlageraußenringes mit dem Lagergehäuse.A thick-walled or massive design of the rolling bearing outer ring also proves to be particularly advantageous if the roller bearing outer ring, according to another preferred embodiment, at least one bore for receiving a fastening screw, by means of which he on the bearing housing is fastened. The bore extends preferably parallel to the cylinder or roller longitudinal axis A. The at least one fastening screw ensures a positive connection of the roller bearing outer ring with the bearing housing.

Vorzugsweise erfolgt auch die Befestigung des Wälzlagerinnenringes am Zapfen mittels einer oder mehrerer Schrauben. Der Wälzlagerinnenring weist hierzu wenigstens eine Bohrung zur Aufnahme einer Befestigungsschraube auf, mittels derer der Wälzlagerinnenring am Zapfen befestigbar ist. Dabei verläuft auch hier die Bohrung vorzugsweise parallel zur Zylinder- oder Walzenlängsachse (A). Bei einer einzigen Bohrung zur Aufnahme einer Befestigungsschraube ist die Bohrung bevorzugt zentral im Innenring angeordnet. Auch hier erweist sich eine massive Ausbildung des Innenringes als vorteilhaft, da auch bei Anordnung einer oder mehrerer Bohrungen die Formstabilität des Innenringes erhalten bleibt.Preferably, the attachment of the rolling bearing inner ring on the pin by means of one or more screws. The rolling bearing inner ring has for this purpose at least one bore for receiving a fastening screw, by means of which the roller bearing inner ring can be fastened to the journal. Here, too, the bore preferably runs parallel to the cylinder or roller longitudinal axis (A). In a single bore for receiving a fastening screw, the bore is preferably arranged centrally in the inner ring. Again, a massive design of the inner ring proves to be advantageous because even with the arrangement of one or more holes, the dimensional stability of the inner ring is maintained.

Indem die vorstehend beschriebenen erfindungsgemäßen Lageranordnungen insbesondere zur Abfangung der als Zapfen ausgebildeten freien Enden von einendig fliegend gelagerten Zylindern oder Walzen geeignet sind, wird zur Lösung der eingangs gestellten Aufgabe ferner eine Druckmaschine, insbesondere eine Flexodruckmaschine, mit einer solchen Lageranordnung vorgeschlagen. Die Lageranordnung kann dabei einzelne oder mehrere der vorstehend ausführlich beschriebenen Merkmale aufweisen.By the above-described bearing arrangements according to the invention are particularly suitable for intercepting the free ends formed as a journal of cantilevered cylinders or rollers, a printing machine, in particular a flexographic printing machine, proposed with such a bearing arrangement for solving the above problem. The bearing assembly may have one or more of the features described in detail above.

Eine bevorzugte Ausführungsform einer erfindungsgemäßen Lageranordnung wird nachfolgend anhand der einzigen beigefügten Zeichnung näher beschrieben. Diese zeigt einen Ausschnitt einer erfindungsgemäßen Lageranordnung im Bereich des Wälzlagers im Längsschnitt.A preferred embodiment of a bearing arrangement according to the invention is described below with reference to the single attached drawing. This shows a section of a bearing assembly according to the invention in the region of the rolling bearing in a longitudinal section.

Die dargestellte Lageranordnung 10 umfasst ein Lagergehäuse 11, an das in einer Befestigungsebene B1 ein Wälzlageraußenring 12 axial angeflanscht ist. Durch das axiale Ansetzen des Wälzlageraußenringes 12 am Lagergehäuse 11 haben fertigungsbedingte Toleranzen der Bauteile auf das Lagerspiel der Lageranordnung keinen Einfluss. Zur Befestigung des Wälzlageraußenringes 12 am Lagergehäuse 11 sind Befestigungsschrauben 14 vorgesehen. Zur Aufnahme der Befestigungsschrauben 14 sind in gleichem radialem Abstand zur Zylinder- bzw. Walzenlängsachse A Bohrungen 15 im Wälzlageraußenring 12 vorgesehen, die parallel zur Zylinder- bzw. Walzenlängsachse A verlaufen. Aufgrund der dickwandigen Ausbildung weist der Außenring dennoch eine hohe Formstabilität auf. Innenumfangseitig trägt der Außenring 12 käfiggeführte Wälzkörper 13, die vorliegend zylinderförmig ausgebildet und in einer Reihe angeordnet sind. Die Wälzkörper 13 werden von einem Käfig 19 gehalten und geführt.The illustrated bearing assembly 10 includes a bearing housing 11 to which a rolling bearing outer ring 12 is axially flanged in a mounting plane B1. Due to the axial attachment of the roller bearing outer ring 12 on the bearing housing 11 manufacturing tolerances of the components on the bearing clearance of Bearing arrangement no influence. For fastening the roller bearing outer ring 12 on the bearing housing 11 mounting screws 14 are provided. To accommodate the fastening screws 14 holes 15 are provided in the roller bearing outer ring 12 at the same radial distance from the cylinder or roller longitudinal axis A, which extend parallel to the cylinder or roller longitudinal axis A. Due to the thick-walled design, the outer ring still has a high dimensional stability. Inner peripheral side of the outer ring 12 carries cage-guided rolling elements 13, which in the present case are cylindrical and arranged in a row. The rolling elements 13 are held and guided by a cage 19.

Weiterhin umfasst die Lageranordnung 10 einen Wälzlagerinnenring 16, der in einer Befestigungsebene B2, die ebenfalls quer zur Zylinder- oder Walzenlängsachse A ausgerichtet ist, mit dem Zapfen 20 eines Zylinders oder einer Walze 21 verbunden ist. Der Wälzlagerinnenring 16 ist somit ebenfalls axial angesetzt, so dass auch hier Fertigungstoleranzen keinen Einfluss auf das im Hinblick auf die Druckqualität schädliche Lagerspiel haben. Gleichwohl der Innenring 16 über eine Befestigungsschraube 17 kraft- und formschlüssig mit dem Zapfen 20 verbunden ist, stellt der Innenring 16 einen Bestandteil der Lageranordnung dar, der beim Sleeve-Wechsel jedoch auf dem Zapfen 20 verbleibt. Alternativ kann auch auf einen Innenring 16 als separates Bauteil verzichtet werden, wenn der Zapfen 20 als Wälzkörperlauffläche ausgebildet ist. Ist jedoch ein separater Innenring vorhanden, sind dieser und der Außenring als hochgenau gepaarte Lagerbauteile ausgeführt, so dass fertigungsbedingt bereits ein sehr geringes Lagerspiel vorhanden ist.Furthermore, the bearing assembly 10 comprises a roller bearing inner ring 16, which is connected in a mounting plane B2, which is also aligned transversely to the cylinder or roll longitudinal axis A, with the pin 20 of a cylinder or a roller 21. The roller bearing inner ring 16 is therefore also axially attached, so that here also manufacturing tolerances have no effect on the harmful in terms of print quality bearing clearance. Although the inner ring 16 is positively and positively connected via a fastening screw 17 with the pin 20, the inner ring 16 is a part of the bearing assembly, but remains on the pin 20 during sleeve replacement. Alternatively, it can be dispensed with an inner ring 16 as a separate component when the pin 20 is formed as Wälzkörperlauffläche. However, if there is a separate inner ring, this and the outer ring are designed as highly accurately paired bearing components, so that due to production already a very small clearance is available.

Die zur Befestigung des Innenringes 16 am Zapfen 20 vorgesehene Schraube 17 wird durch eine zentrale Bohrung 18 im Innenring 16 geführt. Die Bohrung 18 verläuft koaxial zur Zylinder- bzw. Walzenlängsachse A. Eine hohe Formstabilität des Innenringes 16 gewährleistet seine ansonsten massive Ausführung.The intended for attachment of the inner ring 16 on the pin 20 screw 17 is guided through a central bore 18 in the inner ring 16. The bore 18 extends coaxially to the cylinder or roller longitudinal axis A. A high dimensional stability of the inner ring 16 ensures its otherwise massive design.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Lageranordnungbearing arrangement
1111
Lagergehäusebearing housing
1212
WälzlageraußenringRoller bearing outer ring
1313
Wälzkörperrolling elements
1414
Befestigungsschraubefixing screw
1515
Bohrungdrilling
1616
WälzlagerinnenringBearing inner ring
1717
Befestigungsschraubefixing screw
1818
Bohrungdrilling
1919
KäfigCage
2020
Zapfenspigot
2121
Zylinder, WalzeCylinder, roller
AA
Zylinder- oder WalzenlängsachseCylinder or roller longitudinal axis
B1B1
Befestigungsebene WälzlageraußenringFixing level rolling bearing outer ring
B2B2
Befestigungsebene WälzlagerinnenringMounting level rolling bearing inner ring

Claims (7)

  1. Releasable and movable bearing arrangement (10) for supporting the free ends, configured as journals (20), of cylinders or rolls (21) in a printing press which are cantilever-mounted at one end, the bearing arrangement comprising an anti-friction bearing and a bearing housing (11) which can be moved transversely with respect to the cylinder or roll longitudinal axis (A) and/or can be displaced parallel to the cylinder or roll longitudinal axis (A), the anti-friction bearing comprising an anti-friction bearing outer ring (12) and cage-guided rolling bodies (13), and the anti-friction bearing outer ring (12) being connected to the bearing housing (11) in a non-positive and/or positively locking manner in a fastening plane (B1) which is oriented transversely with respect to the cylinder or roll longitudinal axis (A), and the journal (20) of the cylinder or the roll (21) being configured as an anti-friction bearing inner ring (16) or a separate anti-friction bearing inner ring (16) being provided which can be connected to the journal (20) in a non-positive and/or positively locking manner in a fastening plane (B2) which is oriented transversely with respect to the cylinder or roll longitudinal axis (A), it being possible, in order to release the bearing arrangement, for the anti-friction bearing outer ring (12) to be pulled from the anti-friction bearing inner ring (16) or, if the journal serves as an inner ring, from the journal (20).
  2. Bearing arrangement according to Claim 1, characterized in that the anti-friction bearing inner ring (16) is hardened and ground in order to form the journal (20).
  3. Bearing arrangement according to one of the preceding claims, characterized in that the anti-friction bearing outer ring (12) has at least one bore (15) for receiving a fastening screw (14), by means of which the anti-friction bearing outer ring (12) can be fastened to the bearing housing (11).
  4. Bearing arrangement according to Claim 3, characterized in that the bore (15) runs parallel to the cylinder or roll longitudinal axis (A).
  5. Bearing arrangement according to one of the preceding claims, characterized in that the anti-friction bearing inner ring (16) has at least one bore (18) for receiving a fastening screw (17), by means of which the anti-friction bearing inner ring (16) can be fastened to the journal (20).
  6. Bearing arrangement according to Claim 5, characterized in that the bore (18) runs parallel to the cylinder or roll longitudinal axis (A).
  7. Printing press, characterized by at least one bearing arrangement (10) according to one of the preceding claims for supporting the free ends, configured as journals (20), of cylinders or rolls (21) which are cantilever-mounted at one end.
EP09178311.8A 2008-12-19 2009-12-08 Releasable and slidable bearing assembly for a printing press Not-in-force EP2202072B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810063964 DE102008063964A1 (en) 2008-12-19 2008-12-19 Bearing arrangement for a printing press and printing press

Publications (2)

Publication Number Publication Date
EP2202072A1 EP2202072A1 (en) 2010-06-30
EP2202072B1 true EP2202072B1 (en) 2014-06-18

Family

ID=41566308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09178311.8A Not-in-force EP2202072B1 (en) 2008-12-19 2009-12-08 Releasable and slidable bearing assembly for a printing press

Country Status (3)

Country Link
EP (1) EP2202072B1 (en)
CN (1) CN101746108B (en)
DE (1) DE102008063964A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2377412B1 (en) * 2009-04-23 2013-01-24 Comexi, S.A. LIBERABLE SUPPORT DEVICE FOR AN EXTREME OF A ROTATING AXIS, APPLICABLE TO A PRINTER MACHINE.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20016711U1 (en) * 2000-09-27 2001-01-04 Skf Gmbh Bearing arrangement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090939A (en) * 1934-09-13 1937-08-24 Goss Printing Press Co Ltd Rotary printing press
DE2001711A1 (en) 1970-01-15 1971-07-22 Bi Aerosol Verpackungs Gmbh & Device for dispensing liquid and pasty masses
DE9410511U1 (en) * 1994-06-29 1994-08-11 Skf Gmbh Three ring bearing
DE19705369C2 (en) * 1997-02-12 2003-03-06 Windmoeller & Hoelscher press
DE19942984A1 (en) * 1999-09-09 2001-03-15 Schaeffler Waelzlager Ohg Radial-axial bearing unit
EP1796905A1 (en) * 2004-09-29 2007-06-20 Goss International Corporation Inboard cantilever cylinder support for printing presses
CN101258031A (en) * 2005-06-17 2008-09-03 柯尼格及包尔公开股份有限公司 Flexographic printing press
EP2079588A1 (en) * 2006-10-10 2009-07-22 Windmöller & Hölscher KG Supporting bearing for an ink transfer roll or back-pressure roll

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20016711U1 (en) * 2000-09-27 2001-01-04 Skf Gmbh Bearing arrangement

Also Published As

Publication number Publication date
CN101746108B (en) 2014-03-19
EP2202072A1 (en) 2010-06-30
CN101746108A (en) 2010-06-23
DE102008063964A1 (en) 2010-07-01

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