EP1725403B8 - Covering for printing machines - Google Patents

Covering for printing machines Download PDF

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Publication number
EP1725403B8
EP1725403B8 EP05716211A EP05716211A EP1725403B8 EP 1725403 B8 EP1725403 B8 EP 1725403B8 EP 05716211 A EP05716211 A EP 05716211A EP 05716211 A EP05716211 A EP 05716211A EP 1725403 B8 EP1725403 B8 EP 1725403B8
Authority
EP
European Patent Office
Prior art keywords
sleeve
flange
wall
carbon fiber
sleeve according
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.)
Active
Application number
EP05716211A
Other languages
German (de)
French (fr)
Other versions
EP1725403A2 (en
EP1725403B1 (en
Inventor
Heinz W. Lorig
Stephan Lorig
Joan-Dirk KÜMPERS
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.)
Polywest Kunststofftechnik Saueressig und Partner GmbH and Co KG
Original Assignee
Polywest Kunststofftechnik Saueressig und Partner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP1725403A2 publication Critical patent/EP1725403A2/en
Application granted granted Critical
Publication of EP1725403B1 publication Critical patent/EP1725403B1/en
Publication of EP1725403B8 publication Critical patent/EP1725403B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/14—Devices for attaching printing elements or formes to supports for attaching printing formes to intermediate supports, e.g. adapter members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • B41C1/182—Sleeves; Endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • 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

Definitions

  • the invention relates to a sleeve for mounting on support cylinders of printing presses, with two flange rings at the ends of the sleeve, on which a cylindrical outer sleeve wall and an inner sleeve wall are supported at a distance from one another.
  • the invention particularly relates to so-called adapter sleeves for printing presses.
  • the support cylinders are often designed as air cylinders, onto which adapter sleeves or working sleeves can be slid axially or removed from them according to the Beerkissenp ⁇ nzip.
  • the adapter or working sleeve With the compressed air system of the support cylinder, the adapter or working sleeve is expanded for assembly or disassembly, so that it is held in a rotationally fixed manner on the support cylinder during the printing process.
  • the respective working sleeves which are to be mounted on a supporting cylinder with a given diameter, have excessively large wall thicknesses, which would increase the procurement costs for the working sleeves and would reduce the print quality that can be achieved with the working sleeves.
  • Adapter sleeves that can be adapted to the structure and dimensions of support rollers in a comparatively simple manner and with which comparatively good printing quality can be achieved are known, for example, from DE 20012929 U1.
  • the adapter sleeves in this case comprise two mcompressible sleeve elements arranged at the ends of the adapter sleeve, the inside diameter of which with a clearance or transition fit is larger than the outside diameter of the support cylinder.
  • the inner and outer sleeve walls are fastened in such a way that the inner sleeve wall is in the assembled state at a distance from the outer wall of the support cylinder by the thickness of radially extending sleeve sections, both sleeve elements being provided on the end side with collar sections, on the outer surface of which the outer sleeve wall rests.
  • the outer sleeve wall can consist of a fiber-reinforced plastic material. Alternatively, the outer sleeve wall can also consist of an aluminum tube or another rigid material.
  • transition or press fit between the two incompressible socket elements or flange rings and the outer wall of the support cylinder can be achieved by utilizing the temperature expansion coefficient of the material used for this during assembly, by hydraulic or pneumatic clamping elements or by using piezoceramics.
  • No. 4,794,858 shows an adapter sleeve with two end flange rings and only one outer sleeve jacket, the chamber between the two flange rings, which is open to the jacket surface of the support cylinder, being used to transmit the compressed air system of the support cylinder.
  • the sleeve is attached to the support cylinder in a rotationally fixed manner by means of hydraulic clamping elements assigned to the support cylinder.
  • EP 683046B1 discloses a sleeve for mounting on carrier cylinders of flexographic printing presses, in which the outer sleeve wall is spaced from the inner sleeve wall by two flange rings to form a chamber which is sealed off from the outside, the inner sleeve wall being elastically deformable at least in a partial area and by pressing the chamber with a suitable fluid against the outer jacket of the pressure cylinder.
  • the entire sleeve can be made of a composite material.
  • EP 1025996B1 shows a sleeve with an outer jacket made of a carbon fiber composite material with a wound framework made of carbon fibers, the winding being carried out in such a way that the sleeve is self-supporting over the entire sleeve length and two disks arranged in the region of both ends are sufficient to space the sleeve consisting of the carbon fiber winding from the support cylinder.
  • the winding of the carbon fibers must therefore give the sleeve such a high degree of inherent rigidity that the sleeve can withstand all the radial forces that occur during printing over the entire sleeve length, ie the distance between the two disks.
  • the wall thickness of the sleeve provided with the carbon fiber winding is up to 20 mm.
  • the object of the invention is to provide a sleeve for printing machines, in particular an adapter sleeve, which can be easily assembled or disassembled on support cylinders, which can be produced inexpensively and which enables extremely high printing qualities with a comparatively low weight.
  • the outer sleeve wall consists of a fiber composite material with at least one layer of a carbon fiber fabric, and that at least one support ring is provided between the two flange rings to support the outer sleeve wall with respect to the inner sleeve wall.
  • the use of carbon fiber scrims instead of a carbon fiber winding leads to a considerable reduction in the manufacturing costs for the outer sleeve wall, since corresponding carbon fiber scrims, in particular carbon fiber scrims with a unidirectional arrangement of all carbon fibers, can be purchased pre-fabricated and further processed.
  • the arrangement of at least one, preferably a plurality of support rings between the two flange rings allows the sleeve to have a high degree of inherent rigidity over its length with an extremely low weight and, in particular, an extremely thin thickness become.
  • the additional support rings increase the total weight of the sleeve, but because of the thinner necessary thickness of the outer sleeve wall, this results in a surprisingly high print quality in use, with the overall weight of the sleeve remaining low, that with "self-supporting" outer sleeve walls are supported only at the ends, cannot be achieved.
  • a plurality of support rings are arranged or formed between the two flange rings.
  • the number of support rings depends largely on the number of layers of carbon fibers or carbon fiber layers in the fiber composite material and the fiber orientation of the respective layers.
  • at least one carbon fiber fabric is provided, in which the fiber orientation of the carbon fibers is 90 ° relative to the sleeve axis or support cylinder axis. This orientation results in optimal strength properties for the radial forces to be absorbed during the printing process. More preferably, several layers of preferably unidirectional carbon fiber fabrics, in particular about 8 to 15 layers of carbon fiber fabrics, are provided.
  • the rigidity of the outer sleeve wall can be further increased if the fiber orientation of the carbon fibers of at least one layer of a carbon fiber fabric is 45 ° relative to the sleeve axis.
  • the carrier fibers of the carbon fiber scrim can in principle have no or only a low strength property and can consist, for example, of a textile material such as sewing thread.
  • the carrier fiber of the carbon fiber scrim also has sufficiently high strength properties, it being possible for the carrier fiber to consist in particular of a glass fiber.
  • the outer sleeve wall therefore consists of a glass fiber / carbon fiber laid hybrid.
  • the carbon fibers are bundled in the carbon fiber scrim. are arranged and the bundles are positioned relative to each other by means of the carrier fiber.
  • Each preferably flat, strip-shaped bundle of carbon fibers then comprises a large number of individual filaments.
  • the outer sleeve wall can also consist of scrims with carbon fibers and glass fibers, whereby the scrims can then be arranged with changing fiber orientations.
  • a winding with an endless carbon fiber enclosing the carbon fiber scrim or the carbon scrim can be provided in order to increase the inherent rigidity of the outer sleeve wall, or bidirectional carbon fiber scrims are used.
  • the matrix in the fiber composite material, in which the carbon fibers and, if appropriate, the further reinforcing fibers are embedded preferably consists of an ester, in particular a vinyl ester. Alternatively, a polyester or epoxy resin could also be used.
  • the fibers in the scrims used according to the invention can lie in a stretched form in one plane and can be fixed to one another by several knitting threads.
  • the scrims can also consist of several different raw materials and / or several layers that are designed differently in terms of orientation and basis weight.
  • the carrier fibers which fix the fibers of the main orientation direction together with the knitting threads can also consist of polymer threads, glass fiber rovings or plastic fiber rovings.
  • the outer sleeve surface is preferably formed by a functional surface, the functional surface consisting in particular of a coating with a metal such as steel, aluminum, nickel, chromium or copper, an elastomer or the like.
  • the functional surface is electrically conductive, at least one discharge element for discharging electrostatic charges being arranged in one of the flange rings, which in the assembled state has the functional surface connects surface with the carrier cylinder.
  • the diverting element can consist, for example, of a pressure body pretensioned by means of a compression spring, all functional parts of the diverting element being electrically conductive.
  • the two flange rings have an end-side outer flange collar which protrudes in an annular manner over an outer surface area of the flange ring, on which surface area the outer sleeve wall is supported, and which delimits the outer sleeve wall on the end face. It is particularly advantageous if the two flange rings also have an end-side inner flange collar, each inner flange collar projecting annularly over an inner wall surface of the flange ring, on which wall surface the inner sleeve wall is supported, and delimits the inner sleeve wall on the end face. Both measures favor the assembly of the flange rings, support rings and the two sleeve walls.
  • the flange rings is provided with a bore system for the compressed air system of the support cylinder.
  • the bore system in the flange ring preferably comprises at least one radial bore with an opening on the outer wall of the sleeve, further preferably the bore system can have at least one axial bore which is connected to a feed channel opening into a radial bore in at least one of the support rings.
  • the axial bore of the bore system in the flange ring can be connected to the feed channel in the support ring, in particular via a conduit.
  • the feed channels are preferred different support rings connected to each other by further conduit pipes.
  • this comprises, in the particularly preferred embodiment, a spur line to the inner sleeve wall, which is provided with a circumferential groove on the inside into which the spur line opens.
  • FIG. 1 In the single figure, cut in the lower half, shows an adapter sleeve 10 mounted on a support cylinder, designated overall by 1.
  • the support cylinder 1 comprises at both ends a bearing journal 2 or 3, with which the support cylinder 1 can be stored in a printing machine, not shown.
  • a compressed air connection 4 is formed with an air duct 5 which opens into an air duct 6 arranged here centrally on the support roller or sleeve axis A in the support cylinder 1.
  • the air channel 6 extends axially at least to the level of a transverse channel 7 in the support cylinder 1, which extends up to the circumferential surface 8 of the support cylinder 1.
  • Support cylinders of this type designed for printing machines are known in the prior art, so that a further explanation need not be given here.
  • the adapter sleeve 10 comprises at the ends a first flange ring 11 and a second flange ring 12, on which an inner sleeve wall 20 and an outer sleeve wall 30 are fixed and supported at a distance from one another.
  • the adapter sleeve 10 essentially consists of the two flange rings 11, 12 arranged at the ends, the two sleeve walls 20, 30 and a plurality of support rings 40 and 40A.
  • Both flange rings 11, 12 can preferably consist of comparatively dimensionally stable plastic.
  • Both flange rings 11, 12 each comprise an annular web 13 or 14, which extends parallel to the sleeve axis A over several centimeters, and an outer flange collar 17 or 18 at the outer outer surface 15 'or 14' of the outer outer surface 15 'or 14' thereof survives.
  • the outer sleeve wall 20 is supported directly on the outer circumferential surface 13 'and 14' of the web extensions 13, 14 of the two flange rings 11, 12 and is fastened to them in a rotationally fixed manner, for example glued to them.
  • the two flange collars 17 and 18 lie against the end of the outer sleeve wall 14 and extend to the outer surface thereof.
  • the inner sleeve wall 30 lies on inner lateral surfaces 13 ′′ or 14 ′′ of the web extensions 13, 14, an inner flange collar 17A or 18A also projecting radially inwards as an annular web beyond the inner lateral surfaces 13 ′′, 14 ′′, so that the inner sleeve wall 30, when the flange rings 11, 12 are mounted, is also delimited at the end by the inner flange collars 17A and 18A.
  • the support rings 40, 40A are preferably arranged at a constant distance from one another and to the flange rings 11, 12 over the length and the support rings 40, 40A can in particular consist of a dimensionally stable plastic material.
  • the support rings 40, 40A can also consist of preformed disks or can be foamed between the two sleeve walls 20, 30.
  • the inner sleeve wall 30 can consist of a thin-walled tube made of metal or preferably of an elastically deformable synthetic material.
  • the outer sleeve wall 20 consists of a fiber composite material with a plurality of reinforcement layers of a unidirectional carbon fiber scrim 21 with carbon fibers, which are arranged in bundles 22, the fiber orientation of the individual carbon fibers, as shown in the broken section of the sleeve 10, being oriented perpendicular to the sleeve axis A in at least one layer, so that the individual carbon fibers of the bundles 22 in the carbon fiber Layers 21 are arranged in the outer sleeve wall 20 in the manner of stiffening rings.
  • the outer sleeve wall 20 is designed, in particular, as a carbon-glass fiber hybrid, with glass fibers 23 being embedded in the plastic matrix, which consists, for example, of vinyl ester, in addition to the carbon fiber fabric or fabrics 21.
  • the glass fibers 23 can, as in the schematically shown exemplary embodiment, be embedded unidirectionally in a glass fiber fabric 24, which encloses the layers of carbon fiber fabrics 21, or the glass fibers form the carrier fiber for the carbon fiber fabric 21.
  • the fiber orientation of the glass fibers is preferably perpendicular the carbon fiber bundles 22 in the carbon fiber fabric 21 and therefore parallel to the sleeve axis A.
  • the outer sleeve wall 20 preferably comprises up to ten layers of a carbon fiber fabric 21, and in some layers the fiber orientation can also be 45 ° to the sleeve axis A.
  • the number of layers of carbon fiber fabrics 21 and glass fiber fabrics 24 and the thickness of the outer sleeve wall 20 are selected such that the outer sleeve wall 20 would bend under the radial forces that are usually present during the printing process if the outer sleeve wall 20 between the two flange rings 11 , 12 would not be supported by the additional support rings 40, 40A.
  • the number of support rings 40, 40A is therefore determined by the length of the adapter sleeve 10 and the diameter and structure of the outer sleeve wall 20.
  • the adapter sleeve 10 is provided on the outer surface with a functional surface 25 which extends over the entire length of the sleeve 10 and both the outer wall of the outer sleeve wall 20 and the outer surface of the two flange collars 17, 18th to the flange wrestle 11, 12 covered.
  • the functional surface 25 consists of a coating with metal or an elastomer.
  • a deflection element 60 is preferably arranged in one of the flange rings, here in the flange ring 12, which is arranged in a radial bore 61 and extends from the functional surface 25 to beyond the inner sleeve wall 30.
  • the diverting element 60 comprises a sleeve with an electrically conductive bottom piece 62 on which a spring 63 is supported, with which a pressure body, preferably a ball 64, is pressed through an opening in the inner sleeve wall 30 against the peripheral surface 8 of the support cylinder 1 is, so that permanent electrical contact between the functional surface 25 of the adapter sleeve 10 and the peripheral surface 8 of the support cylinder 1 is guaranteed.
  • a plurality of discharge elements 60 can be distributed over the circumference or distributed over the flange rings.
  • the sleeve is provided with an air guide system which, in the exemplary embodiment shown, comprises an axial bore 71 and a spur line 72 in the flange ring 11, the spur line 72 in a circumferential groove 31 on the inside of the inner sleeve wall 30 opens, which is in the assembled state of the adapter sleeve 10 on the support cylinder 1 of the transverse bore 7 in the support cylinder 1 directly opposite.
  • the compressed air introduced into the carrying cylinder 1 via the compressed air connection 4 can be introduced into the air guidance system in the adapter sleeve 10.
  • a plurality of circumferentially distributed outlet openings 76 are provided at the level of the flange ring 12, wherein in the region of the outlet openings 76 a threaded screw 78 provided with a through hole can be screwed through the outer sleeve wall 20 into the web section 14 of the flange ring 12.
  • Further outlet openings 77 can also be arranged in the region of one or more support rings 40, in which case a radial bore 79 branches off from an axial air duct 81 in the associated support ring 40 and a threaded screw 78 provided with a passage is screwed through the sleeve wall 20 into the support ring 40 ,
  • the adapter sleeve 10 is provided with a so-called register pin 35 at the opposite end.
  • the support cylinder is not designed as a compressed air cylinder, a compressed air connection can also be provided directly in one of the flange rings. If the working sleeve is assembled from the side of the pressure cylinder compressed air connection, it may be sufficient if only the adjacent flange ring and the first support ring adjacent to it are provided with an air guide system. The arrangement and number of carbon fiber fabrics can be adapted to the pressure forces to be expected and the number of support rings.
  • the adapter sleeve 10 can be connected in a rotationally fixed manner to the support cylinder according to the air cushion principle or by other suitable means.
  • the inner sleeve wall can be compressible or the inner sleeve wall is elastic and further grooves are arranged in the area of the support rings, whereby these inner grooves have a diameter that is matched to the outer diameter of the support cylinder with clearance.

Abstract

The invention relates to a sleeve for mounting on carrier cylinders of printing machines, with two flange rings 11, 12 on the ends, on which a cylindrical outer sleeve wall 20 and an inner sleeve wall 30 are supported at a distance from each other. In order to create a sleeve, more particularly an adapter sleeve, that can be easily mounted on and removed from carrier cylinders, is cost-effective to produce, and with a comparatively low weight allows extremely high printing qualities, it is envisaged in accordance with the invention that the external sleeve wall 20 comprises a fibre composite material with at least one layer of a carbon fibres-nonwoven sheet 21 and that between the two flange rings 11, 12 at least one support ring 40, 40 A is provided that supports the outer sleeve wall 20 , vis-à-vis the inner sleeve wall 30.

Description

Anmelder: Polywest Kunststofftechnik Saueressig & Partner GmbH & Co. KG, Ridderstraße 42, D-48683 Ahaus F.A. Kümpers GmbH & Co . KG Basilikastr. 22-30, 48429 Rheine Titel : Hülse für Druckmaschinen Applicant: Polywest Kunststofftechnik Saueressig & Partner GmbH & Co. KG, Ridderstraße 42, D-48683 Ahaus F.A. Kümpers GmbH & Co. KG Basilikastr. 22-30, 48429 Rheine Title: Sleeve for printing machines
Die Erfindung betrifft eine Hülse zur Montage auf Tragzylindern von Druckmaschinen, mit zwei Flanschringen an den Enden der Hülse, an denen eine zylindrische äußere Hülsenwand und eine innere Hülsenwand im Abstand voneinander abgestützt sind.The invention relates to a sleeve for mounting on support cylinders of printing presses, with two flange rings at the ends of the sleeve, on which a cylindrical outer sleeve wall and an inner sleeve wall are supported at a distance from one another.
Die Erfindung betrifft insbesondere sogenannte Adapterhülsen für Druckmaschinen. Bei Druckmaschinen sind die Tragzylinder vielfach als Luftzylinder ausgeführt, auf die Adapterhülsen bzw. Arbeitshülsen nach dem Luftkissenpπnzip axial aufgeschoben bzw. von diesen abgezogen werden können. Mit dem Druckluftsystem des Tragzylinders wird die Adapter- oder Arbeitshülse zur Montage oder Demontage geweitet, so dass sie wahrend des Druckvorgangs mit Preßsitz auf dem Tragzylinder drehfest gehalten ist. Durch die Verwendung von Adapterhülsen kann vermieden werden, dass die jeweiligen Arbeitshülsen, die auf einem Tragzylinder mit vorgegebenem Durchmesser montiert werden sollen, übermäßig große Wanddicken erhalten, welche die Beschaffungskosten für die Arbeitshülsen erhöhen und die erreichbare Druckqualität mit den Arbeitshülsen mindern würden.The invention particularly relates to so-called adapter sleeves for printing presses. In the case of printing presses, the support cylinders are often designed as air cylinders, onto which adapter sleeves or working sleeves can be slid axially or removed from them according to the Luftkissenpπnzip. With the compressed air system of the support cylinder, the adapter or working sleeve is expanded for assembly or disassembly, so that it is held in a rotationally fixed manner on the support cylinder during the printing process. By using adapter sleeves it can be avoided that the respective working sleeves, which are to be mounted on a supporting cylinder with a given diameter, have excessively large wall thicknesses, which would increase the procurement costs for the working sleeves and would reduce the print quality that can be achieved with the working sleeves.
Adapterhülsen, die auf vergleichsweise einfache Weise an den Aufbau und die Abmessungen von Tragwalzen angepasst werden können und mit denen vergleichsweise gute Druckqualltaten erreicht werden können, sind beispielsweise aus der DE 20012929 Ul bekannt. Die Adapterhulsen umfassen hierbei zwei an den Enden der Adapterhülse angeordnete, mkompressible Buchsenelemente, deren Innendurchmesser mit einer Spiel- oder Uber- gangspassung größer ist als der Außendurchmesser des Tragzylinders. An den Buchsenelementen sind die aus Rohren bestehen- de innere und äußere Hülsenwand derart befestigt, dass die innere Hülsenwand im Montagezustand von der Außenwand des Tragzylinders um die Dicke von radial sich erstreckenden Buchsenabschnitten beabstandet ist, wobei beide Buchsenelemente end- seitig mit Bundabschnitten versehen sind, an deren Außenfläche die äußere Hülsenwand anliegt. Die äußere Hülsenwand kann aus einem faserverstärkten Kunststoffmaterial bestehen. Alternativ kann die äußere Hülsenwand auch aus einem Aluminiumrohr oder einem anderen biegesteifen Material bestehen. Die Übergangsoder Presspassung zwischen den beiden endseitigen, inkompres- siblen Buchsenelementen bzw. Flanschringen und der Außenwandung des Tragzylinders kann durch Ausnutzung des Temperaturde- hungskoeffizienten des für diese verwendeten Materials bei der Montage, durch hydraulische oder pneumatische Spannelemente oder durch Verwendung von Piezokeramiken erreicht werden.Adapter sleeves that can be adapted to the structure and dimensions of support rollers in a comparatively simple manner and with which comparatively good printing quality can be achieved are known, for example, from DE 20012929 U1. The adapter sleeves in this case comprise two mcompressible sleeve elements arranged at the ends of the adapter sleeve, the inside diameter of which with a clearance or transition fit is larger than the outside diameter of the support cylinder. On the socket elements are made of pipes The inner and outer sleeve walls are fastened in such a way that the inner sleeve wall is in the assembled state at a distance from the outer wall of the support cylinder by the thickness of radially extending sleeve sections, both sleeve elements being provided on the end side with collar sections, on the outer surface of which the outer sleeve wall rests. The outer sleeve wall can consist of a fiber-reinforced plastic material. Alternatively, the outer sleeve wall can also consist of an aluminum tube or another rigid material. The transition or press fit between the two incompressible socket elements or flange rings and the outer wall of the support cylinder can be achieved by utilizing the temperature expansion coefficient of the material used for this during assembly, by hydraulic or pneumatic clamping elements or by using piezoceramics.
Die US 4,794,858 zeigt eine Adapterhülse mit zwei endseitigen Flanschringen und nur einem äußeren Hülsenmantel, wobei die zur Mantelfläche des Tragzylinders offene Kammer zwischen den beiden Flanschringen zur Übertragung des Druckluftsystems des Tragzylinders ausgenutzt werden soll. Die drehfeste Befestigung der Hülse auf dem Tragzylinder erfolgt mittels hydraulischen, dem Tragzylinder zugeordneten Spannelementen.No. 4,794,858 shows an adapter sleeve with two end flange rings and only one outer sleeve jacket, the chamber between the two flange rings, which is open to the jacket surface of the support cylinder, being used to transmit the compressed air system of the support cylinder. The sleeve is attached to the support cylinder in a rotationally fixed manner by means of hydraulic clamping elements assigned to the support cylinder.
Aus der EP 683046B1 ist eine Hülse zum Montieren auf Trägerzylindern von Flexodruckmaschinen bekannt, bei welcher die äußere Hülsenwand von der inneren Hülsenwand durch zwei Flanschringe unter Ausbildung einer nach außen hin abgedichteten Kammer beabstandet ist, wobei die innere Hülsenwand zumindest auf einem Teilbereich elastisch verformbar ist und durch Beaufschlagen der Kammer mit einem geeigneten Fluid gegen den Außenmantel des Druckzylinders anpreßbar ist. Die gesamte Hülse kann hierbei aus einem Verbundwerkstoff hergestellt sein.EP 683046B1 discloses a sleeve for mounting on carrier cylinders of flexographic printing presses, in which the outer sleeve wall is spaced from the inner sleeve wall by two flange rings to form a chamber which is sealed off from the outside, the inner sleeve wall being elastically deformable at least in a partial area and by pressing the chamber with a suitable fluid against the outer jacket of the pressure cylinder. The entire sleeve can be made of a composite material.
Die EP 1025996B1 zeigt eine Hülse mit einem Außenmantel aus einem Kohlefaser-Verbundmaterial mit einem gewickelten Gerüst aus Kohlefasern, wobei die Wicklung derart vorgenommen ist, dass die Hülse über die gesamte Hülsenlänge selbsttragend ist und zwei im Bereich beider Enden angeordnete Scheiben ausreichen, die aus der Kohlefaserwicklung bestehende Hülse vom Tragzylinder zu beabstanden. Die Wicklung der Kohlefasern muss der Hülse daher eine derart hohe Eigensteifigkeit verleihen, dass die Hülse über die gesamte Hülsenlänge, d.h. den Abstand zwischen beiden Scheiben, allen beim Drucken auftretenden Radialkräften standhalten kann. Bei Außendurchmessern von bis zu 400 mm beträgt die Wanddicke der mit der Kohlefaserwicklung versehenen Hülse bis zu 20 mm. Durch Verwendung eines kohlefaserverstärkten Verbundmaterials für die Hülse kann, im Vergleich zu Hülsen mit einem Mantel aus Metall, eine deutliche Gewichtsreduzierung erreicht werden.EP 1025996B1 shows a sleeve with an outer jacket made of a carbon fiber composite material with a wound framework made of carbon fibers, the winding being carried out in such a way that the sleeve is self-supporting over the entire sleeve length and two disks arranged in the region of both ends are sufficient to space the sleeve consisting of the carbon fiber winding from the support cylinder. The winding of the carbon fibers must therefore give the sleeve such a high degree of inherent rigidity that the sleeve can withstand all the radial forces that occur during printing over the entire sleeve length, ie the distance between the two disks. With outer diameters of up to 400 mm, the wall thickness of the sleeve provided with the carbon fiber winding is up to 20 mm. By using a carbon fiber reinforced composite material for the sleeve, a significant weight reduction can be achieved compared to sleeves with a jacket made of metal.
Aufgabe der Erfindung ist es, eine Hülse für Druckmaschinen, insbesondere eine Adapterhülse, zu schaffen, die auf einfache Weise auf Tragzylindern montiert bzw. demontiert werden kann, die kostengünstig herstellbar ist und die bei vergleichsweise niedrigem Gewicht äußerst hohe Druckqualitäten ermöglicht.The object of the invention is to provide a sleeve for printing machines, in particular an adapter sleeve, which can be easily assembled or disassembled on support cylinders, which can be produced inexpensively and which enables extremely high printing qualities with a comparatively low weight.
Erfindungsgemäß ist hierzu vorgesehen, dass die äußere Hülsenwand aus einem Faserverbundwerkstoff mit wenigstens einer Lage eines Kohlefaser-Geleges besteht, und dass zwischen den beiden Flanschringen wenigstens ein die äußere Hülsenwand gegenüber der inneren Hülsenwand abstützender Stützring vorgesehen ist. Die Verwendung von Kohlefaser-Gelegen anstelle einer Kohlefaser-Wicklung führt zu einer beträchtlichen Minderung der Herstellkosten für die äußere Hülsenwand, da entsprechende Kohlefaser-Gelege, insbesondere Kohlefaser-Gelege mit unidirektio- naler Anordnung sämtlicher Kohlefasern, vorfabriziert zugekauft und weiterverarbeitet werden können. Durch die Anordnung wenigstens eines, vorzugsweise mehrerer Stützringe zwischen den beiden Flanschringen kann bei äußerst niedrigem Gewicht und insbesondere äußerst geringer Dicke der äußeren Hülsenwand eine hohe Eigensteifigkeit der Hülse über ihre Länge erreicht werden. Die zusätzlichen Stützringe erhöhen zwar das Gesamtgewicht der Hülse, auf Grund der hierdurch ermöglichten dünneren notwendigen Dicke der äußeren Hülsenwand zeigt sich im Ergebnis jedoch, bei weiterhin niedrigem Gesamtgewicht der Hülse, eine überraschend hohe Druckqualität im Einsatz, die mit "selbsttragenden" äußeren Hülsenwänden, die nur endseitig abgestützt sind, nicht erreicht werden kann.According to the invention, it is provided that the outer sleeve wall consists of a fiber composite material with at least one layer of a carbon fiber fabric, and that at least one support ring is provided between the two flange rings to support the outer sleeve wall with respect to the inner sleeve wall. The use of carbon fiber scrims instead of a carbon fiber winding leads to a considerable reduction in the manufacturing costs for the outer sleeve wall, since corresponding carbon fiber scrims, in particular carbon fiber scrims with a unidirectional arrangement of all carbon fibers, can be purchased pre-fabricated and further processed. The arrangement of at least one, preferably a plurality of support rings between the two flange rings allows the sleeve to have a high degree of inherent rigidity over its length with an extremely low weight and, in particular, an extremely thin thickness become. The additional support rings increase the total weight of the sleeve, but because of the thinner necessary thickness of the outer sleeve wall, this results in a surprisingly high print quality in use, with the overall weight of the sleeve remaining low, that with "self-supporting" outer sleeve walls are supported only at the ends, cannot be achieved.
In bevorzugter Ausgestaltung sind zwischen beiden Flanschringen mehrere Stützringe angeordnet oder ausgebildet. Die Anzahl der Stützringe hängt hierbei maßgeblich von der Anzahl der Lagen an Kohlefasern bzw. Kohlefaser-Gelegen im Faserverbundwerkstoff und der Faserorientierung der jeweiligen Lagen ab. Bei der bevorzugten Ausgestaltung ist wenigstens ein Kohlefaser-Gelege vorgesehen, bei welchem die Faserorientierung der Kohlefasern 90° relativ zur Hülsenachse bzw. Tragzylinderachse beträgt. Diese Orientierung bewirkt optimale Festigkeitseigenschaften für die beim Druckvorgang aufzunehmenden Radialkräfte. Weiter vorzugsweise sind mehrere Lagen von vorzugsweise unidirektionalen Kohlefaser-Gelegen, insbesondere etwa 8 bis 15 Lagen Kohlefaser-Gelege vorgesehen. Die Steifigkeit der äußeren Hülsenwand läßt sich weiter erhöhen, wenn die Faserorientierung der Kohlefasern wenigstens einer Lage eines Kohlefaser-Geleges 45° relativ zur Hülsenachse beträgt. Mehrere Lagen von Kohlefaser-Gelegen können dieselbe Faserorientierung aufweisen. In einfachster Ausgestaltung können die Trägerfasern des Kohlefaser-Geleges im Prinzip keine bzw. nur eine geringe Festigkeitseigenschaft aufweisen und beispielsweise aus einem textilen Material wie Nähgarn bestehen. Bei der insbesondere bevorzugten Ausgestaltung weist auch die Trägerfaser des Kohlefaser-Geleges ausreichend hohe Festigkeitseigenschaften auf, wobei die Trägerfaser insbesondere aus einer Glasfaser bestehen kann. Bei der insbesondere bevorzugten Ausgestaltung besteht mithin die äußere Hülsenwand aus einem Glasfaser- /Kohlefasergelege-Hybrid. Besonders vorteilhaft ist, wenn - wie an sich bekannt- die Kohlefasern im Kohlefaser-Gelege bün- delweise angeordnet sind und die Bündel mittels der Trägerfaser relativ zueinander positioniert sind. Jedes vorzugsweise flache, streifenförmige Bündel an Kohlefasern umfasst dann eine Vielzahl von Einzelfilamenten. Alternativ kann die äußere Hülsenwand auch aus Gelegen mit Kohlefasern und Glasfasern bestehen, wobei die Gelege dann mit wechselnden Faserorientierungen angeordnet sein können. Weiter Alternativ kann eine das oder die Kohlefaser-Gelege umschließende Wicklung mit einer endlosen Kohlefaser vorgesehen sein, um die Eigensteifigkeit der äußeren Hülsenwand zu erhöhen oder es kommen bidirektionale Kohlefasergelege zum Einsatz. Die Matrix im Faserverbundwerkstoff, in das die Kohlefasern und weiteren ggf. die weiteren Verstärkungsfasern eingebettet sind, besteht vorzugsweise aus einem Ester, insbesondere einem Vinylester. Alternativ könnte auch ein Polyester oder Epoxydharz Verwendung finden.In a preferred embodiment, a plurality of support rings are arranged or formed between the two flange rings. The number of support rings depends largely on the number of layers of carbon fibers or carbon fiber layers in the fiber composite material and the fiber orientation of the respective layers. In the preferred embodiment, at least one carbon fiber fabric is provided, in which the fiber orientation of the carbon fibers is 90 ° relative to the sleeve axis or support cylinder axis. This orientation results in optimal strength properties for the radial forces to be absorbed during the printing process. More preferably, several layers of preferably unidirectional carbon fiber fabrics, in particular about 8 to 15 layers of carbon fiber fabrics, are provided. The rigidity of the outer sleeve wall can be further increased if the fiber orientation of the carbon fibers of at least one layer of a carbon fiber fabric is 45 ° relative to the sleeve axis. Several layers of carbon fiber fabrics can have the same fiber orientation. In the simplest embodiment, the carrier fibers of the carbon fiber scrim can in principle have no or only a low strength property and can consist, for example, of a textile material such as sewing thread. In the particularly preferred embodiment, the carrier fiber of the carbon fiber scrim also has sufficiently high strength properties, it being possible for the carrier fiber to consist in particular of a glass fiber. In the particularly preferred embodiment, the outer sleeve wall therefore consists of a glass fiber / carbon fiber laid hybrid. It is particularly advantageous if, as is known per se, the carbon fibers are bundled in the carbon fiber scrim. are arranged and the bundles are positioned relative to each other by means of the carrier fiber. Each preferably flat, strip-shaped bundle of carbon fibers then comprises a large number of individual filaments. Alternatively, the outer sleeve wall can also consist of scrims with carbon fibers and glass fibers, whereby the scrims can then be arranged with changing fiber orientations. Further alternatively, a winding with an endless carbon fiber enclosing the carbon fiber scrim or the carbon scrim can be provided in order to increase the inherent rigidity of the outer sleeve wall, or bidirectional carbon fiber scrims are used. The matrix in the fiber composite material, in which the carbon fibers and, if appropriate, the further reinforcing fibers are embedded, preferably consists of an ester, in particular a vinyl ester. Alternatively, a polyester or epoxy resin could also be used.
Weiter vorzugsweise können bei den erfindungsgemäß eingesetzten Gelege die Fasern in gestreckter Form in jeweils einer E- bene liegen und durch mehrere Wirkfäden zueinander fixiert sein. Die Gelege können auch aus mehreren unterschiedlichen Rohstoffen und/oder aus mehreren hinsichtlich Orientierung und Flächengewicht unterschiedlich ausgeführten Lagen bestehen. Weiter vorzugsweise können die Trägerfasern, die die Fasern der Hauptorientierungsrichtung gemeinsam mit den Wirkfäden fixieren, auch aus Polymerfäden, Glasfaserrovings oder Kunststofffaserrovings bestehen.With further preference, the fibers in the scrims used according to the invention can lie in a stretched form in one plane and can be fixed to one another by several knitting threads. The scrims can also consist of several different raw materials and / or several layers that are designed differently in terms of orientation and basis weight. More preferably, the carrier fibers which fix the fibers of the main orientation direction together with the knitting threads can also consist of polymer threads, glass fiber rovings or plastic fiber rovings.
Bei sämtlichen Ausgestaltungen ist die Hülsenaußenfläche vorzugsweise durch eine Funktionsoberfläche gebildet, wobei die Funktionsoberfläche insbesondere aus einer Beschichtung mit einem Metall wie Stahl, Aluminium, Nickel, Chrom oder Kupfer, einem Elastomer oder dergleichen besteht . Bei einer besonders bevorzugten Ausgestaltung ist die Funktionsoberfläche elektrisch leitend, wobei wenigstens ein Ableitelement zur Ableitung elektrostatischer Aufladungen in einem der Flanschringe angeordnet ist, welches im Montagezustand die Funktionsober- fläche mit dem Trägerzylinder verbindet. Das Ableitelement kann beispielsweise aus einem mittels einer Druckfeder vorgespannten Druckkörper bestehen, wobei sämtliche Funktionsteile des Ableitelementes elektrisch leitend sind.In all configurations, the outer sleeve surface is preferably formed by a functional surface, the functional surface consisting in particular of a coating with a metal such as steel, aluminum, nickel, chromium or copper, an elastomer or the like. In a particularly preferred embodiment, the functional surface is electrically conductive, at least one discharge element for discharging electrostatic charges being arranged in one of the flange rings, which in the assembled state has the functional surface connects surface with the carrier cylinder. The diverting element can consist, for example, of a pressure body pretensioned by means of a compression spring, all functional parts of the diverting element being electrically conductive.
Bei der insbesondere bevorzugten Ausgestaltung weisen die beiden Flanschringe einen endseitigen äußeren Flanschbund auf, der über eine äußere Mantelfläche des Flanschrings, an welcher Mantelfläche sich die äußere Hülsenwand abstützt, ringförmig übersteht und der die äußere Hülsenwand stirnseitig begrenzt. Besonders vorteilhaft ist, wenn die beiden Flanschringe auch einen endseitigen inneren Flanschbund aufweisen, wobei jeder innere Flanschbund über eine innere Wandfläche des Flanschrings, an welcher Wandfläche sich die innere Hülsenwand abstützt, ringförmig übersteht und die innere Hülsenwand stirnseitig begrenzt. Beide Maßnahmen begünstigen den Zusammenbau der Flanschringe, Stützringe und der beiden Hülsenwände.In the particularly preferred embodiment, the two flange rings have an end-side outer flange collar which protrudes in an annular manner over an outer surface area of the flange ring, on which surface area the outer sleeve wall is supported, and which delimits the outer sleeve wall on the end face. It is particularly advantageous if the two flange rings also have an end-side inner flange collar, each inner flange collar projecting annularly over an inner wall surface of the flange ring, on which wall surface the inner sleeve wall is supported, and delimits the inner sleeve wall on the end face. Both measures favor the assembly of the flange rings, support rings and the two sleeve walls.
Für Tragzylinder mit Druckluftsystem ist besonders vorteilhaft, wenn wenigstens einer der Flanschringe mit einem Bohrungssystem für das Druckluftsystem des Tragzylinders versehen ist. Das Bohrungssystem im Flanschring umfasst vorzugsweise wenigstens eine Radialbohrung mit einer Mündung an der Hülse- naußenwandung, wobei weiter vorzugsweise das Bohrungssystem wenigstens eine Axialbohrung aufweisen kann, die mit einem in eine Radialbohrung mündenden Zuführkanal in wenigstens einem der Stützringe verbunden ist. Die Axialbohrung des Bohrungssystems im Flanschring kann mit dem Zuführkanal im Stützring insbesondere über ein Leitungsrohr verbunden sein. Dies hat u.a. den Vorteil, dass die zwischen einem Flanschring und einem Stützring und/oder zwischen zwei Stützringen gebildeten Kammern nicht hermetisch abgedichtet sein müssen und dass die Verbindung zwischen den Flanschringen bzw. Stützringen und den Hülsenwänden nicht den Kräften des Druckluftsystems unterliegen. Falls mehrere Stützringe mit Zuführkanälen bzw. Radial - bohrungen versehen sind, sind vorzugsweise die Zuführkanäle verschiedener Stützringe untereinander durch weitere Leitungsrohre verbunden. Um das Bohrungssystem im Flanschring mit dem Druckluftsystem des Tragzylinders zu verbinden , umfasst dieses bei der insbesondere bevorzugten Ausgestaltung eine Stichleitung zur inneren Hülsenwand, wobei diese mit einer umlaufenden Nut an der Innenseite versehen ist, in die die Stichleitung mündet.For support cylinders with a compressed air system it is particularly advantageous if at least one of the flange rings is provided with a bore system for the compressed air system of the support cylinder. The bore system in the flange ring preferably comprises at least one radial bore with an opening on the outer wall of the sleeve, further preferably the bore system can have at least one axial bore which is connected to a feed channel opening into a radial bore in at least one of the support rings. The axial bore of the bore system in the flange ring can be connected to the feed channel in the support ring, in particular via a conduit. This has the advantage, among other things, that the chambers formed between a flange ring and a support ring and / or between two support rings do not have to be hermetically sealed and that the connection between the flange rings or support rings and the sleeve walls are not subject to the forces of the compressed air system. If several support rings are provided with feed channels or radial bores, the feed channels are preferred different support rings connected to each other by further conduit pipes. In order to connect the bore system in the flange ring to the compressed air system of the support cylinder, this comprises, in the particularly preferred embodiment, a spur line to the inner sleeve wall, which is provided with a circumferential groove on the inside into which the spur line opens.
Weitere Vorteile und Ausgestaltungen ergeben sich aus der nachfolgenden Beschreibung eines schematisch in der einzigen Figur gezeigten Ausführungsbeispiels.Further advantages and configurations result from the following description of an exemplary embodiment shown schematically in the single figure.
In der einzigen Figur ist, in der unteren Hälfte geschnitten, eine auf einem insgesamt mit 1 bezeichneten Tragzylinder montierte Adapterhülse 10 dargestellt. Der Tragzylinder 1 umfasst an seinen beiden Enden jeweils einen Lagerzapfen 2 bzw. 3, mit welchen der Tragzylinder 1 in einer weiter nicht dargestellten Druckmaschine gelagert werden kann. Am Lagerzapfen 2 des Tragzylinders 1 ist ein Druckluftanschluß 4 mit einem Luftführungskanal 5 ausgebildet, der in einen hier zentrisch auf der Tragwalzen- bzw. Hülsenachse A angeordneten Luftkanal 6 im Tragzylinder 1 mündet. Der Luftkanal 6 erstreckt sich axial zumindest bis auf Höhe eines Querkanals 7 im Tragzylinder 1, welcher sich bis zur Umfangsflache 8 des Tragzylinders 1 erstreckt. Derartig ausgebildete Tragzylinder für Druckmaschinen sind im Stand der Technik bekannt, sodass eine weitere Erläuterung hier nicht erfolgen muss .In the single figure, cut in the lower half, shows an adapter sleeve 10 mounted on a support cylinder, designated overall by 1. The support cylinder 1 comprises at both ends a bearing journal 2 or 3, with which the support cylinder 1 can be stored in a printing machine, not shown. On the bearing journal 2 of the support cylinder 1, a compressed air connection 4 is formed with an air duct 5 which opens into an air duct 6 arranged here centrally on the support roller or sleeve axis A in the support cylinder 1. The air channel 6 extends axially at least to the level of a transverse channel 7 in the support cylinder 1, which extends up to the circumferential surface 8 of the support cylinder 1. Support cylinders of this type designed for printing machines are known in the prior art, so that a further explanation need not be given here.
Die erfindungsgemäße Adapterhülse 10 umfasst jeweils an den Enden einen ersten Flanschring 11 sowie einen zweiten Flanschring 12, an denen eine innere Hülsenwand 20 und eine äußere Hülsenwand 30 im Abstand voneinander festgelegt und abgestützt sind. Die Adapterhülse 10 besteht im Wesentlichen aus den beiden endseitig angeordneten Flanschringen 11, 12, den beiden Hülsenwand 20, 30 sowie mehreren Stützringen 40 bzw. 40A. Diese stützen zusammen mit den Flanschringen 11, 12 die beiden Hülsenwände 20 bzw. 30 gegenseitig ab und verleihen hierdurch der äußeren Hülsenwand 20 relativ zur inneren Hülsenwand 30 und zur Umfangsflache 8 des Tragzylinders 1 über die Länge der Hülse 10 eine ausreichende Eigensteifigkeit zur Aufnahme der Druckkräfte beim Druckvorgang. Beide Flanschringe 11, 12 können vorzugsweise aus vergleichsweise formstabilen Kunststoff bestehen. Beide Flanschringe 11, 12 umfassen jeweils einen sich parallel zur Hülsenachse A über mehrere Zentimeter erstreckenden Ringsteg 13 bzw. 14, über dessen äußere Mantelfläche 13' bzw. 14' jeweils am endseitigen, äußeren Ende 15 bzw. 16 ein äußerer Flanschbund 17 bzw. 18 übersteht. Die äußere Hülsenwand 20 stützt sich jeweils unmittelbar an den äußeren Mantelfläche 13' bzw.14' der Stegfortsätze 13, 14 der beiden Flanschringe 11, 12 ab und ist an diesen drehfest befestigt, beispielsweise mit diesen verklebt. Die beiden Flanschbunde 17 bzw. 18 liegen hierbei stirnseitig an der äußeren Hülsenwand 14 an und erstrecken sich bis zu dessen Außenfläche. Die innere Hülsenwand 30 liegt an inneren Mantelflächen 13' ' bzw. 14' ' der Stegfortsätze 13, 14, wobei auch über die inneren Mantelflächen 13 ' ' , 14 ' ' jeweils ein innerer Flanschbund 17A bzw. 18A radial als Ringsteg nach innen hinausragt, so dass auch die innere Hülsenwand 30 bei montierten Flanschringen 11, 12 stirnseitig von den inneren Flanschbünden 17A bzw. 18A begrenzt ist. Die Stützringe 40, 40A sind vorzugsweise mit gleichbleibendem Abstand zueinander und zu den Flanschringen 11, 12 über die Länge verteilt angeordnet und die Stützringe 40, 40A können insbesondere aus einem formstabilen Kunststoffmaterial bestehen. Die Stützringe 40, 40A können auch aus vorgeformten Scheiben bestehen oder zwischen den beiden Hülsenwänden 20, 30 angeschäumt werden.The adapter sleeve 10 according to the invention comprises at the ends a first flange ring 11 and a second flange ring 12, on which an inner sleeve wall 20 and an outer sleeve wall 30 are fixed and supported at a distance from one another. The adapter sleeve 10 essentially consists of the two flange rings 11, 12 arranged at the ends, the two sleeve walls 20, 30 and a plurality of support rings 40 and 40A. These support the two together with the flange rings 11, 12 Sleeve walls 20 and 30 from each other and thereby give the outer sleeve wall 20 relative to the inner sleeve wall 30 and the peripheral surface 8 of the support cylinder 1 over the length of the sleeve 10 sufficient inherent rigidity to absorb the compressive forces during the printing process. Both flange rings 11, 12 can preferably consist of comparatively dimensionally stable plastic. Both flange rings 11, 12 each comprise an annular web 13 or 14, which extends parallel to the sleeve axis A over several centimeters, and an outer flange collar 17 or 18 at the outer outer surface 15 'or 14' of the outer outer surface 15 'or 14' thereof survives. The outer sleeve wall 20 is supported directly on the outer circumferential surface 13 'and 14' of the web extensions 13, 14 of the two flange rings 11, 12 and is fastened to them in a rotationally fixed manner, for example glued to them. The two flange collars 17 and 18 lie against the end of the outer sleeve wall 14 and extend to the outer surface thereof. The inner sleeve wall 30 lies on inner lateral surfaces 13 ″ or 14 ″ of the web extensions 13, 14, an inner flange collar 17A or 18A also projecting radially inwards as an annular web beyond the inner lateral surfaces 13 ″, 14 ″, so that the inner sleeve wall 30, when the flange rings 11, 12 are mounted, is also delimited at the end by the inner flange collars 17A and 18A. The support rings 40, 40A are preferably arranged at a constant distance from one another and to the flange rings 11, 12 over the length and the support rings 40, 40A can in particular consist of a dimensionally stable plastic material. The support rings 40, 40A can also consist of preformed disks or can be foamed between the two sleeve walls 20, 30.
Die innere Hülsenwand 30 kann aus einem dünnwandigen Rohr aus Metall oder vorzugsweise aus elastisch verformbarem Kunst - Stoffmaterial bestehen. Die äußere Hülsenwand 20 besteht erfindungsgemäß aus einem Faserverbundwerkstoff mit mehreren Verstärkungslagen eines unidirektionalen Kohlenfaser-Geleges 21 mit Kohlefasern, die in Bündeln 22 angeordnet sind, wobei bei wenigstens einer Lage die Faserorientierung der einzelnen Kohlefasern, wie in dem aufgebrochenen Ausschnitt der Hülse 10 dargestellt, senkrecht zur Hülsenachse A ausgerichtet ist, so dass die einzelnen Kohlefasern der Bündel 22 im Kohlefaser- Gelege 21 in der äußeren Hülsenwand 20 nach Art von Versteifungsringen angeordnet sind. Die äußere Hülsenwand 20 ist insbesondere als Kohlefaser-Glasfaser-Hybrid ausgebildet, wobei zusätzlich zu der bzw. den Kohlefaser-Gelegen 21 noch Glasfasern 23 in die beispielsweise aus Vinylester bestehende Kunststoffmatrix eingebettet sind. Die Glasfasern 23 können, wie im schematisch gezeigten Ausführungsbeispiel, unidirektional in ein Glasfasergelege 24 eingebettet sein, welches die Lagen an Kohlefaser-Gelegen 21 umschließt, oder die Glasfasern bilden die Trägerfaser für das Kohlefaser-Gelege 21. Die Faserorientierung der Glasfasern liegt vorzugsweise senkrecht zu den Kohlefaserbündeln 22 im Kohlefaser-Gelege 21 und mithin parallel zur Hülsenachse A. Die äußere Hülsenwand 20 umfaßt vorzugsweise bis zu zehn Lagen eines Kohlefaser-Geleges 21, wobei bei einigen Lagen die Faserorientierung auch 45° zur Hülsenachse A betragen kann. Die Anzahl der Lagen an Kohlefaser- Gelegen 21 und Glasfaser-Gelegen 24 und die Dicke der äußeren Hülsenwand 20 sind derart gewählt, daß die äußere Hülsenwand 20 unter den üblicherweise beim Druckvorgang vorliegenden Radialkräften verbiegen würde, wenn die äußere Hülsenwand 20 zwischen den beiden Flanschringen 11, 12 nicht durch die zusätzlichen Stützringe 40, 40A unterstützt wäre. Die Anzahl der Stützringe 40, 40A bestimmt sich mithin nach der Länge der A- dapterhülse 10 sowie dem Durchmesser und dem Aufbau der äußeren Hülsenwand 20.The inner sleeve wall 30 can consist of a thin-walled tube made of metal or preferably of an elastically deformable synthetic material. According to the invention, the outer sleeve wall 20 consists of a fiber composite material with a plurality of reinforcement layers of a unidirectional carbon fiber scrim 21 with carbon fibers, which are arranged in bundles 22, the fiber orientation of the individual carbon fibers, as shown in the broken section of the sleeve 10, being oriented perpendicular to the sleeve axis A in at least one layer, so that the individual carbon fibers of the bundles 22 in the carbon fiber Layers 21 are arranged in the outer sleeve wall 20 in the manner of stiffening rings. The outer sleeve wall 20 is designed, in particular, as a carbon-glass fiber hybrid, with glass fibers 23 being embedded in the plastic matrix, which consists, for example, of vinyl ester, in addition to the carbon fiber fabric or fabrics 21. The glass fibers 23 can, as in the schematically shown exemplary embodiment, be embedded unidirectionally in a glass fiber fabric 24, which encloses the layers of carbon fiber fabrics 21, or the glass fibers form the carrier fiber for the carbon fiber fabric 21. The fiber orientation of the glass fibers is preferably perpendicular the carbon fiber bundles 22 in the carbon fiber fabric 21 and therefore parallel to the sleeve axis A. The outer sleeve wall 20 preferably comprises up to ten layers of a carbon fiber fabric 21, and in some layers the fiber orientation can also be 45 ° to the sleeve axis A. The number of layers of carbon fiber fabrics 21 and glass fiber fabrics 24 and the thickness of the outer sleeve wall 20 are selected such that the outer sleeve wall 20 would bend under the radial forces that are usually present during the printing process if the outer sleeve wall 20 between the two flange rings 11 , 12 would not be supported by the additional support rings 40, 40A. The number of support rings 40, 40A is therefore determined by the length of the adapter sleeve 10 and the diameter and structure of the outer sleeve wall 20.
Aus der Fig. ist ferner ersichtlich, daß die Adapterhülse 10 an der Außenfläche mit einer Funktionsoberfläche 25 versehen ist, welche sich über die gesamte Länge der Hülse 10 erstreckt und sowohl die Außenwandung der äußeren Hülsenwand 20 als auch die Außenfläche der beiden Flanschbunde 17, 18 an den Flansch- ringen 11, 12 überdeckt. Die Funktionsoberfläche 25 besteht _aus einer Beschichtung mit Metall oder einem Elastomer. Bei einer insbesondere leitenden Funktionsoberfläche 25 ist vorzugsweise in einem der Flanschringe, hier im Flanschring 12, ein Ableitelement 60 angeordnet, welches in einer Radialbohrung 61 angeordnet ist und sich von der Funktionsoberfläche 25 bis über die innere Hülsenwand 30 hinaus erstreckt. In bevorzugter Ausgestaltung umfaßt das Ableitelement 60 eine Hülse mit einem elektrisch leitenden Bodenstück 62 an welchem sich eine Feder 63 abstützt, mit der ein Druckkörper, vorzugsweise eine Kugel 64, durch eine Öffnung in der inneren Hülsenwand 30 hindurch gegen die Umfangsflache 8 des Tragzylinders 1 gedrückt wird, so daß permanent ein elektrischer Kontakt zwischen der Funktionsoberfläche 25 der Adapterhülse 10 und der Umfangsflache 8 des Tragzylinders 1 gewährleistet ist. Mehrere Ableitelemente 60 können hierbei über den Umfang verteilt bzw. über die Flanschringe verteilt angeordnet sein.From the figure it can also be seen that the adapter sleeve 10 is provided on the outer surface with a functional surface 25 which extends over the entire length of the sleeve 10 and both the outer wall of the outer sleeve wall 20 and the outer surface of the two flange collars 17, 18th to the flange wrestle 11, 12 covered. The functional surface 25 consists of a coating with metal or an elastomer. In the case of a particularly conductive functional surface 25, a deflection element 60 is preferably arranged in one of the flange rings, here in the flange ring 12, which is arranged in a radial bore 61 and extends from the functional surface 25 to beyond the inner sleeve wall 30. In a preferred embodiment, the diverting element 60 comprises a sleeve with an electrically conductive bottom piece 62 on which a spring 63 is supported, with which a pressure body, preferably a ball 64, is pressed through an opening in the inner sleeve wall 30 against the peripheral surface 8 of the support cylinder 1 is, so that permanent electrical contact between the functional surface 25 of the adapter sleeve 10 and the peripheral surface 8 of the support cylinder 1 is guaranteed. A plurality of discharge elements 60 can be distributed over the circumference or distributed over the flange rings.
Für die Montage der Adapterhülse 10 auf als Luftzylinder ausgeführten Tragzylindern 1 ist die Hülse mit einem Luftleitsystem versehen, welches im gezeigten Ausführungsbeispiel eine Axialbohrung 71 und eine Stichleitung 72 im Flanschring 11 umfaßt, wobei die Stichleitung 72 in eine Umfangsnut 31 an der Innenseite der inneren Hülsenwand 30 mündet, welche im Montagezustand der Adapterhülse 10 auf dem Tragzylinder 1 der Querbohrung 7 im Tragzylinder 1 unmittelbar gegenüberliegt. Hierdurch kann die über den Druckluftanschluß 4 in den Tragzylinder 1 eingebrachte Druckluft in das Luftleitsystem in der A- dapterhülse 10 eingeleitet werden. Da beim gezeigten Ausführungsbeispiel eine Arbeitshülse vom linken Ende der Adapterhülse 10 auf diese aufgeschoben werden soll, ist eine Axial - bohrung 74 und eine Radialbohrung 75 im anderen endseitigen Flanschring 12 mit der Axialbohrung 71 im Flanschring 11 verbunden. Die Weiterleitung der Druckluft zwischen den beiden Flanschringen 11, 12 bzw. deren Axialbohrungen 71, 74 erfolgt über ein hier in mehrere Abschnitte unterteiltes Leitungsrohr 80. Dies hat den Vorteil, daß die zwischen den beiden Flanschringen 11, 12 und den dazwischen positionierten Stützringen 40, 40A ausgebildeten Kammern 27 nicht druckfest für Druckluft ausgeführt sein müssen. Im gezeigten Ausführungsbeispiel sind auf Höhe des Flanschrings 12 mehrere, umfangsverteilt angeordnete Austrittsöffnungen 76 vorgesehen, wobei jeweils im Bereich der Austrittsöffnungen 76 eine mit einem Durchgangsloch versehene Gewindeschraube 78 durch die äußere Hülsenwand 20 hindurch in den Stegabschnitt 14 des Flanschring 12 eingeschraubt sein kann. Weitere Austrittsöffnungen 77 können auch im Bereich eines oder mehrerer Stützringe 40 angeordnet sein, wobei dann wiederum eine Radialbohrung 79 von einem axialen Luftleitkanal 81 im zugehörigen Stützring 40 abzweigt und eine mit einem Durchgang versehene Gewindeschraube 78 durch die Hülsenwand 20 hindurch in den Stützring 40 eingeschraubt ist. Für die Positionierung und Ausrichtung der das Druckmotiv tragenden Arbeitshülse ist die Adapterhülse 10 mit einem sogenannten Passerstift 35 am entgegengesetzten Ende versehen.For the assembly of the adapter sleeve 10 on support cylinders 1 designed as air cylinders, the sleeve is provided with an air guide system which, in the exemplary embodiment shown, comprises an axial bore 71 and a spur line 72 in the flange ring 11, the spur line 72 in a circumferential groove 31 on the inside of the inner sleeve wall 30 opens, which is in the assembled state of the adapter sleeve 10 on the support cylinder 1 of the transverse bore 7 in the support cylinder 1 directly opposite. As a result, the compressed air introduced into the carrying cylinder 1 via the compressed air connection 4 can be introduced into the air guidance system in the adapter sleeve 10. Since in the exemplary embodiment shown a working sleeve is to be pushed onto the adapter sleeve 10 from the left end thereof, an axial bore 74 and a radial bore 75 in the other end flange ring 12 are connected to the axial bore 71 in the flange ring 11. The compressed air is passed on between the two flange rings 11, 12 or their axial bores 71, 74 via a conduit pipe which is divided into several sections here 80. This has the advantage that the chambers 27 formed between the two flange rings 11, 12 and the support rings 40, 40A positioned between them do not have to be pressure-resistant for compressed air. In the exemplary embodiment shown, a plurality of circumferentially distributed outlet openings 76 are provided at the level of the flange ring 12, wherein in the region of the outlet openings 76 a threaded screw 78 provided with a through hole can be screwed through the outer sleeve wall 20 into the web section 14 of the flange ring 12. Further outlet openings 77 can also be arranged in the region of one or more support rings 40, in which case a radial bore 79 branches off from an axial air duct 81 in the associated support ring 40 and a threaded screw 78 provided with a passage is screwed through the sleeve wall 20 into the support ring 40 , For the positioning and alignment of the working sleeve carrying the printing motif, the adapter sleeve 10 is provided with a so-called register pin 35 at the opposite end.
Für den Fachmann ergeben sich aus der vorhergehenden Beschreibung zahlreiche Modifikationen, die in den Schutzbereich der anhängenden Ansprüche fallen sollen. Falls der Tragzylinder nicht als Druckluftzylinder ausgeführt ist, kann ein Druckluftanschluß auch unmittelbar in einem der Flanschringe vorgesehen sein. Falls die Montage der Arbeitshülse von der Seite des Druckzylinder-Druckluftanschluß erfolgt, kann es ausreichend sein, wenn nur der benachbarte Flanschring sowie der erste, diesem benachbarte Stützring mit einem Luftleitsystem versehen ist. Die Anordnung und Anzahl der Kohlefaser-Gelege kann an die zu erwartenden Druckkräfte und die Anzahl der Stützringe angepaßt werden. Die Adapterhülse 10 kann nach dem Luftkissenprinzip oder durch andere geeignete Mittel drehfest mit dem Tragzylinder verbunden sein. Für die Montage nach dem Luftkissenprinzip kann beispielsweise die innere Hülsenwand kompressibel sein oder die innere Hülsenwand ist elastisch und im Bereich der Stützringe sind weitere Nuten angeordnet, wobei diese Innennuten einen Durchmesser aufweisen, der mit Spiel - passung an den Außendurchmesser des Tragzylinders angepaßt ist . For the person skilled in the art numerous modifications result from the preceding description, which should fall within the scope of the appended claims. If the support cylinder is not designed as a compressed air cylinder, a compressed air connection can also be provided directly in one of the flange rings. If the working sleeve is assembled from the side of the pressure cylinder compressed air connection, it may be sufficient if only the adjacent flange ring and the first support ring adjacent to it are provided with an air guide system. The arrangement and number of carbon fiber fabrics can be adapted to the pressure forces to be expected and the number of support rings. The adapter sleeve 10 can be connected in a rotationally fixed manner to the support cylinder according to the air cushion principle or by other suitable means. For assembly according to the air cushion principle, for example, the inner sleeve wall can be compressible or the inner sleeve wall is elastic and further grooves are arranged in the area of the support rings, whereby these inner grooves have a diameter that is matched to the outer diameter of the support cylinder with clearance.

Claims

P a t e n t a n s p r ü c h e: Patent claims:
1. Hülse zur Montage auf Tragzylindern von Druckmaschinen, mit zwei Flanschringen an den Enden, an denen eine zylindrische äußere Hülsenwand und eine innere Hülsenwand im Abstand voneinander abgestützt sind, dadurch gekennzeichnet, daß die äußere Hülsenwand (20) aus einem Faserverbundwerkstoff mit wenigstens einer Lage eines Kohlefaser- Geleges (21) besteht und daß zwischen den beiden Flanschringen (11, 12) wenigstens ein die äußere Hülsenwand (20) gegenüber der inneren Hülsenwand (30) abstützender Stützring (40; 40A) vorgesehen ist.1. Sleeve for mounting on support cylinders of printing machines, with two flange rings at the ends, on which a cylindrical outer sleeve wall and an inner sleeve wall are supported at a distance from one another, characterized in that the outer sleeve wall (20) made of a fiber composite material with at least one layer a carbon fiber fabric (21) and that between the two flange rings (11, 12) at least one supporting ring (40; 40A) is provided which supports the outer sleeve wall (20) with respect to the inner sleeve wall (30).
2. Hülse nach Anspruch 1, dadurch gekennzeichnet, daß zwischen beiden Flanschringen (11, 12) mehrere Stützringe (40, 40A) angeordnet oder ausgebildet sind.2. Sleeve according to claim 1, characterized in that between the two flange rings (11, 12) a plurality of support rings (40, 40A) are arranged or formed.
3. Hülse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Faserorientierung der Kohlefasern wenigstens einer Lage des Kohlefaser-Geleges (21) 90° relativ zur Hülsenachse (A) beträgt .3. Sleeve according to claim 1 or 2, characterized in that the fiber orientation of the carbon fibers is at least one layer of the carbon fiber fabric (21) 90 ° relative to the sleeve axis (A).
4. Hülse nach einem der Ansprüche 1 bis 3, gekennzeichnet durch mehrere Lagen von vorzugsweise unidirektionalen Kohlefaser-Gelegen (21) , insbesondere acht bis fünfzehn Lagen Kohlefaser-Gelege .4. Sleeve according to one of claims 1 to 3, characterized by several layers of preferably unidirectional carbon fiber fabrics (21), in particular eight to fifteen layers of carbon fiber fabrics.
5. Hülse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Faserorientierung der Kohlefasern wenigstens eines Kohlefaser-Geleges 45° relativ zur Hülsenachse beträgt .5. Sleeve according to one of claims 1 to 4, characterized in that the fiber orientation of the carbon fibers of at least one carbon fiber fabric is 45 ° relative to the sleeve axis.
6. Hülse nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß mehrere Lagen von Kohlefaser-Gelegen dieselbe Faserorientierung aufweisen. 6. Sleeve according to one of claims 3 to 5, characterized in that several layers of carbon fiber fabrics have the same fiber orientation.
7. Hülse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Trägerfaser des Kohlefaser-Geleges geringe Festigkeitseigenschaften aufweist und/oder aus tex- tilem Material besteht.7. Sleeve according to one of claims 1 to 6, characterized in that the carrier fiber of the carbon fiber scrim has low strength properties and / or consists of textile material.
8. Hülse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Trägerfaser des Kohlefaser-Geleges hohe Festigkeitseigenschaften aufweist und/oder aus einer Glasfaser besteht.8. Sleeve according to one of claims 1 to 6, characterized in that the carrier fiber of the carbon fiber fabric has high strength properties and / or consists of a glass fiber.
9. Hülse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die äußere Hülsenwand (20) aus einem Kohlefaser-Glasfaser-Hybrid besteht und vorzugsweise aus Gelegen mit Kohlefasern und Glasfasern besteht .9. Sleeve according to one of claims 1 to 8, characterized in that the outer sleeve wall (20) consists of a carbon fiber-glass fiber hybrid and preferably consists of scrims with carbon fibers and glass fibers.
10. Hülse nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Kohlefasern im Kohlefaser-Gelege (21) bündelweise angeordnet sind und die Bündel (22) mittels der Trägerfaser relativ zueinander positioniert sind.10. Sleeve according to one of claims 1 to 9, characterized in that the carbon fibers in the carbon fiber fabric (21) are arranged in bundles and the bundles (22) are positioned relative to one another by means of the carrier fiber.
11. Hülse nach einem der Ansprüche 1 bis 10, gekennzeichnet durch eine das oder die Kohlefaser-Gelege umschließende Wicklung mit Kohlefasern.11. Sleeve according to one of claims 1 to 10, characterized by a or the carbon fiber fabric enclosing winding with carbon fibers.
12. Hülse nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Matrix, in die die Kohlefaser-Gelege eingebettet sind, aus einem Ester, vorzugsweise einem Vi- nylester besteht .12. Sleeve according to one of claims 1 to 11, characterized in that the matrix, in which the carbon fiber fabrics are embedded, consists of an ester, preferably a vinyl ester.
13. Hülse nach einem der Ansprüche 1 bis 12, gekennzeichnet durch eine die Hülsenaußenfläche bildende, vorzugsweise als Beschichtung ausgebildete Funktionsoberfläche (25) , wobei vorzugsweise die Funktionsoberfläche (25) elektrisch leitend ist und wenigstens ein Ableitelement (60) zur Ab- leitung elektrostatischer Aufladungen in einem der Flanschringe angeordnet ist, das im Montagezustand die Funktionsoberfläche mit dem Tragzylinder verbindet.13. Sleeve according to one of claims 1 to 12, characterized by a functional surface (25) forming the outer surface of the sleeve, preferably in the form of a coating, the functional surface (25) preferably being electrically conductive and at least one discharge element (60) for removal. line of electrostatic charges is arranged in one of the flange rings, which connects the functional surface with the support cylinder in the assembled state.
14. Hülse nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die beiden Flanschringe (11, 12) einen endseitigen äußeren Flanschbund (17, 18) aufweisen, der über eine äußere Mantelfläche (13', 14') des Flanschrings (11, 12), an dem sich die äußere Hülsenwand (20) abstützt, ringförmig übersteht und die äußere Hülsenwand (20) stirnseitig begrenzt.14. Sleeve according to one of claims 1 to 13, characterized in that the two flange rings (11, 12) have an end-side outer flange collar (17, 18) which has an outer lateral surface (13 ', 14') of the flange ring (11th , 12) on which the outer sleeve wall (20) is supported, protrudes in a ring and delimits the outer sleeve wall (20) on the end face.
15. Hülse nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die beiden Flanschringe (11, 12) einen endseitigen inneren Flanschbund (17A, 18A) aufweisen, wobei jeder Flanschbund (17A, 18A) über eine innere Wandfläche (13'', 14'') des Flanschrings (11, 12), an dem sich die innere Hülsenwand (39) abstützt, ringförmig übersteht und die innere Hülsenwand (30) stirnseitig begrenzt.15. Sleeve according to one of claims 1 to 14, characterized in that the two flange rings (11, 12) have an end inner flange collar (17A, 18A), each flange collar (17A, 18A) via an inner wall surface (13 '' , 14 '') of the flange ring (11, 12) on which the inner sleeve wall (39) is supported, protrudes in a ring and delimits the inner sleeve wall (30) on the end face.
16. Hülse nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß wenigstens einer der Flanschringe (11; 12) mit einem Bohrungssystem zum Zusammenwirken mit einem Druckluftsystem des Tragzylinders (1) versehen ist, wobei vorzugsweise das Bohrungssystem im Flanschring (12) wenigstens eine Radialbohrung (75) mit einer Mündung (76) an der Hülsenaußenwandung aufweist und/oder das Bohrungssystem wenigstens eine Axialbohrung (71) aufweist, die mit einem in eine Radialbohrung (79) mündenden Zuführkanal (81) in wenigstens einem Stützring (40) verbunden ist.16. Sleeve according to one of claims 1 to 15, characterized in that at least one of the flange rings (11; 12) is provided with a bore system for interacting with a compressed air system of the support cylinder (1), preferably the bore system in the flange ring (12) at least has a radial bore (75) with an opening (76) on the sleeve outer wall and / or the bore system has at least one axial bore (71) which is connected to a feed channel (81) opening into a radial bore (79) in at least one support ring (40) is.
17. Hülse nach Anspruch 16, dadurch gekennzeichnet, daß die Axialbohrung (71) des Bohrungssystems im Flanschring (11) mit dem Zuführkanal (81) im Stützring (40) über ein Leitungsrohr (80) verbunden ist und/oder die Zuführkanäle verschiedener Stützringe untereinander über Leitungsrohre (80) verbunden sind.17. A sleeve according to claim 16, characterized in that the axial bore (71) of the bore system in the flange ring (11) is connected to the feed channel (81) in the support ring (40) via a conduit (80) and / or the feed channels different support rings are connected to one another via line pipes (80).
18. Hülse nach Anspruch 17, dadurch gekennzeichnet, daß das Bohrungssystem eine Stichleitung (72) zur inneren Hülsenwand (30) aufweist, wobei diese mit einer umlaufenden Nut (31) an der Innenseite versehen ist, in die die Stichleitung (72) mündet. 18. Sleeve according to claim 17, characterized in that the bore system has a spur line (72) to the inner sleeve wall (30), which is provided with a circumferential groove (31) on the inside into which the spur line (72) opens.
EP05716211A 2004-03-18 2005-03-18 Covering for printing machines Active EP1725403B8 (en)

Applications Claiming Priority (2)

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DE202004004375U DE202004004375U1 (en) 2004-03-18 2004-03-18 Sleeve for printing machines
PCT/EP2005/002923 WO2005090075A2 (en) 2004-03-18 2005-03-18 Covering for printing machines

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EP1725403A2 EP1725403A2 (en) 2006-11-29
EP1725403B1 EP1725403B1 (en) 2010-11-10
EP1725403B8 true EP1725403B8 (en) 2011-02-16

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US (1) US20070144381A1 (en)
EP (1) EP1725403B8 (en)
AT (1) ATE487595T1 (en)
CA (1) CA2558878C (en)
DE (2) DE202004004375U1 (en)
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WO2005090075A2 (en) 2005-09-29
ATE487595T1 (en) 2010-11-15
EP1725403A2 (en) 2006-11-29
DE502005010511D1 (en) 2010-12-23
EP1725403B1 (en) 2010-11-10
CA2558878C (en) 2010-05-04
DE202004004375U1 (en) 2004-10-28
WO2005090075A3 (en) 2005-11-24
CA2558878A1 (en) 2005-09-29
US20070144381A1 (en) 2007-06-28

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