EP2275372B1 - Roller for a printing press - Google Patents

Roller for a printing press Download PDF

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Publication number
EP2275372B1
EP2275372B1 EP09165302A EP09165302A EP2275372B1 EP 2275372 B1 EP2275372 B1 EP 2275372B1 EP 09165302 A EP09165302 A EP 09165302A EP 09165302 A EP09165302 A EP 09165302A EP 2275372 B1 EP2275372 B1 EP 2275372B1
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EP
European Patent Office
Prior art keywords
roll
roller
arrangement
range
bearings
Prior art date
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Application number
EP09165302A
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German (de)
French (fr)
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EP2275372A1 (en
Inventor
Jürgen Frauenknecht
Roland Palatzky
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Texmag GmbH Vertriebsgesellschaft
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Texmag GmbH Vertriebsgesellschaft
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Publication date
Application filed by Texmag GmbH Vertriebsgesellschaft filed Critical Texmag GmbH Vertriebsgesellschaft
Priority to ES09165302T priority Critical patent/ES2386932T3/en
Priority to EP09165302A priority patent/EP2275372B1/en
Priority to US12/824,276 priority patent/US20110005414A1/en
Priority to JP2010146202A priority patent/JP5656473B2/en
Priority to CA2709113A priority patent/CA2709113C/en
Priority to CN201010231325.2A priority patent/CN101954778B/en
Publication of EP2275372A1 publication Critical patent/EP2275372A1/en
Application granted granted Critical
Publication of EP2275372B1 publication Critical patent/EP2275372B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
    • B65H2401/10—Materials
    • B65H2401/11—Polymer compositions
    • B65H2401/112—Fibre reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/24—Deformation of part of handling machine

Definitions

  • the present invention relates to a roller assembly used in printing machines, especially in rotary printing machines.
  • Rotary printing presses use a large number of deflection rollers that can neither be actively driven nor actively decelerated. In the event of a malfunction (for example, in the case of a paper tear), the rotary printing press must be stopped. Since a rotary printing press is often operated at relatively high paper speeds (e.g., 1000 m / min and 18 m / sec, respectively), the deceleration process takes a relatively long time and the broke is considerable (sometimes over 100 meters of paper tape).
  • a roller assembly has a roller and two rotary bearings.
  • the roller has a reinforcement with a fiber composite material which is arranged inside the roller, wherein the ratio of the distance of the radial line of action of the rotary bearing to the roller end relative to the total length of the roller is in the range of 0.015 to 0.05.
  • the reinforcement is preferably arranged between the rotary bearings and designed such that the roller is reinforced in relation to a bending load.
  • the reinforcement with a fiber composite material may have various configurations.
  • the reinforcement can be a tube made of a fiber composite material have, which rests from the inside of the roller.
  • the reinforcement may comprise strips of a fiber composite material, which run parallel to the roll axis and are arranged radially within the roll. If strips are used, a support tube can additionally be provided in order to support the strips of a fiber composite material from the inside.
  • the reinforcement with a fiber composite material high rigidity of the roller assembly is achieved, wherein the roller with the reinforcement at the same time has a relatively low moment of inertia.
  • the rotary bearings of the roller assembly can be arranged on a (fixed) axis, which extends over the entire length of the roller.
  • the rotary bearings are preferably arranged at an end region of the roller.
  • the pivot bearings can be advantageously supported, wherein the end point of the axis, which serve to fasten the roller assembly, do not have to absorb bending moments.
  • pivot bearings can be arranged on axle sections which are separated from one another.
  • the assembly may be more expensive, and that the shaft sections must also absorb bending moments.
  • this has the advantage that the bars of reinforcement, which rotate together with the roller in operation, can extend beyond the center, since no continuous solid axis in the way.
  • the entire roller arrangement has been optimized in order to achieve the least possible deflection.
  • the length of the roller, the position of the rotary bearings, the wall thicknesses of the roller and the reinforcement with fiber composite were taken into account. It has been found that the ratio of the distance between the radial line of action of the rotary bearing to the end of the roller relative to the total length of the roller is advantageously in the range of 0.015 to 0.05, in particular from 0.03 to 0.04, in particular about or exactly 0.035.
  • the ratio of outer diameter of the roller to the total length of the roller is preferably in the range of 0.03 to 0.1, in particular 0.04 to 0.7, in particular about 0.05 to 0.06, preferably about or exactly 0.54.
  • the ratio of the wall thickness of the roller in the area between the rotary bearings relative to the outer diameter of the roller is in the range of 0.01 to 0.08, in particular 0.02 to 0.06, in particular about 0.015 to 0.04, preferably about or exactly 0, 03.
  • the ratio of the wall thickness of the fiber composite tube to the wall thickness of the roller in the region between the pivot bearings is in the range of 0.2 to 1.0, in particular 0.5 to 0.9, in particular about 0.6 to 0.8, preferably about or exactly 0.71.
  • roller cover At the ends of the axes preferably roller cover are arranged, wherein between the roller covers and the roller, an air gap is present.
  • the air gap extends in the circumferential direction and is in the range of 0.3 to 2 mm, in particular in the range of 0.5 to 1.8 mm, in particular in the range of 0.9 to 1.4 mm, preferably about or exactly 1.25 mm.
  • multifilament carbon fibers or polyacrylonitrile-based fibers which are preferably carbonized by pyrolysis or refined by graphitization to Ultra High Modulus (UHM) fibers.
  • UHM Ultra High Modulus
  • the fibers can be embedded in a matrix, in particular in a duroplastic matrix or a resin matrix (typically epoxy resin).
  • the course of the fiber directions is preferably in the region of the total reinforcement in the longitudinal direction (with respect to the roller axis).
  • the fibers run alternatively or additionally in the angular range of 30-60 ° to the longitudinal direction, and if necessary, are arranged crossed.
  • Fig. 1 and Fig. 2 show a longitudinal or cross section through a roller assembly according to a first embodiment of the present invention.
  • the illustrated roller assembly comprises a roller 1 and two rotary bearings 2a, 2b .
  • the roller 1 has a reinforcement with a fiber composite material, which is arranged inside the roller 1 .
  • the reinforcement is preferably arranged between the rotary bearings 2a, 2b and designed such that the roller 1 is reinforced with respect to a bending load.
  • the reinforcement consists in the in Fig. 1 illustrated embodiment of a tube 3 made of a fiber composite material, which rests from the inside to the roller 1 .
  • the reinforcement achieves a high rigidity of the roller arrangement, with the roller simultaneously having a relatively low moment of inertia with the reinforcement.
  • the roller arrangement or the rotary printing press can be brought to a standstill faster in the event of a malfunction with one or more roller arrangements according to the invention than is the case with roller arrangements according to the prior art, wherein the braking effect is mediated via the paper web.
  • the reinforcement minimizes the deflection of the roll, which is generated due to the force of the paper web, so that the paper web is not partially stretched by the deflection. Because at a point with a high deflection, the path that the paper web has to travel is less than at a point with a small deflection.
  • the rotary bearings 2a, 2b of the roller assembly are in the embodiment according to Fig. 1 arranged on a fixed axis 8 , which extends over the entire length of the roller.
  • the rotary bearings 2a, 2b are arranged at an end region of the roller, ie right and left. With a fixed Axis, the pivot bearings can be supported advantageously, the end point of the axis, which serve to fasten the roller assembly, do not have to absorb bending moments.
  • the entire roller arrangement has been optimized in order to achieve the least possible deflection.
  • the length of the roller, the position of the rotary bearings, the wall thicknesses of the roller and the reinforcement with fiber composite were taken into account. It was found that the ratio of the distance between the radial line of action of the pivot bearing to the end of the roll over the total length of the roll is advantageously about 0.035.
  • the ratio of outer diameter of the roll to the total length of the roll is preferably about 0.54.
  • the ratio of the wall thickness of the roller in the area between the pivot bearings relative to the outer diameter of the roller is about 0.03.
  • the ratio of the wall thickness of the fiber composite pipe to the wall thickness of the roll in the area between the rotary bearings is about 0.71.
  • Roller covers 10a, 10b are preferably respectively arranged at the ends of the axles, an air gap 11 being present between the roller covers 10a, 10b and the roller.
  • the air gap runs in the circumferential direction and is in the range of 1.25 mm. The action of the fixed roller cover and the rotating roller prevents dirt from entering the interior of the roller assembly.
  • Fig. 3 shows a longitudinal section through a roller assembly according to a second embodiment of the present invention.
  • This embodiment corresponds to the first embodiment except that there is no continuous axis. Instead, the pivot bearings 2a, 2b are arranged on axle sections 9a, 9b , which are separated from one another.
  • FIG. 4 and FIG. 5 show a longitudinal or cross section through a roller assembly according to a third embodiment of the present invention.
  • This embodiment corresponds to the second embodiment, wherein the reinforcement additionally comprises strips 4 made of a fiber composite material which extend parallel to the roll axis and are arranged radially inside the roll 1.
  • the strips extend over the roller center.
  • Fig. 6 and Fig. 7 show a longitudinal or cross section through a roller assembly according to a fourth embodiment of the present invention.
  • strips 6 are also provided, but do not extend beyond the roller center.
  • a further support tube 5 is provided here radially inwardly with respect to the strips 6 in order to support the strips 6 of a fiber composite material from the inside.
  • the support tube may also consist of the fiber composite material.
  • a tube 3 may be provided in addition, as is the case in the first embodiment.
  • FIGS. 8 and 9 show a longitudinal or cross section through a roller assembly according to a fifth embodiment of the present invention.
  • This embodiment has as a reinforcement exclusively strips 7 made of fiber composite material, but no tube made of a fiber composite material.
  • multifilament carbon fibers or polyacrylonitrile-based fibers can be used, which are preferably carbonized by pyrolysis or refined by graphitization to UltraHochmodul fibers (UHM).
  • UHM UltraHochmodul fibers
  • the fibers can be embedded in a matrix, in particular in a duroplastic matrix or a resin matrix (typically epoxy resin).
  • the course of the fiber directions is preferably in the region of the total reinforcement in the longitudinal direction (with respect to the roller axis).
  • the fibers run alternatively or additionally in the angular range of 30-60 ° to the longitudinal direction, and if necessary, are arranged crossed.
  • the reinforcement can be introduced in all embodiments in a state when the matrix or the epoxy resin is not yet cured. In this way, a firm bond between the reinforcement and the roller is achieved.
  • the reinforcement can also be formed beforehand, and then inserted and glued into the roll.
  • the roll assembly is balanced, wherein - if necessary - balancing weights are arranged or glued in the interior of the roll at appropriate locations.
  • pivot bearings are shown in the embodiments as a ball bearing. However, plain bearings or air bearings can be used instead.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rotary Presses (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Description

Die vorliegende Erfindung betrifft eine Walzenanordnung, die in Druckmaschinen, insbesondere in Rotationsdruckmaschinen verwendet werden.The present invention relates to a roller assembly used in printing machines, especially in rotary printing machines.

In Rotationsdruckmaschinen werden eine Vielzahl von Umlenkwalzen verwendet, die weder aktiv angetrieben werden, noch aktiv abgebremst werden können. Im Falle eines Störungsfalles (z.B. im Falle eines Papierrisses) muss die Rotationsdruckmaschine angehalten werden. Da eine Rotationsdruckmaschine oft bei relative hohen Papierlaufgeschwindigkeiten betrieben wird (z.B. 1000 m/min bzw. 18 m/sec), dauert der Abbremsvorgang relativ lange, und der Papierausschuss ist beträchtlich (teils über 100 m Papierband).Rotary printing presses use a large number of deflection rollers that can neither be actively driven nor actively decelerated. In the event of a malfunction (for example, in the case of a paper tear), the rotary printing press must be stopped. Since a rotary printing press is often operated at relatively high paper speeds (e.g., 1000 m / min and 18 m / sec, respectively), the deceleration process takes a relatively long time and the broke is considerable (sometimes over 100 meters of paper tape).

Im Stand der Technik z.B. aus den Schriften DE 29801421-U1 , DE 20321351-U1 oder DE4125620-A1 sind verschiedene Konstruktionen für Walzenanordnungen bekannt, die in Druckmaschinen, insbesondere in Rotationsdruckmaschinen verwendet werden.In the prior art, for example, from the writings DE 29801421-U1 , DE 20321351-U1 or DE4125620-A1 Various constructions are known for roller arrangements which are used in printing machines, in particular in rotary printing machines.

Zusammenfassung der ErfindungSummary of the invention

Eine Walzenanordnung weist eine Walze und zwei Drehlagerungen auf. Erfindungsgemäß ist vorgesehen, dass die Walze eine Verstärkung mit einem Faserverbundwerkstoff aufweist, die innerhalb der Walze angeordnet ist, wobei das Verhältnis von Abstand der radialen Wirkungslinie der Drehlagerung zum Walzenende gegenüber der Gesamtlänge der Walze im Bereich von 0,015 bis 0,05 liegt. Die Verstärkung ist vorzugsweise zwischen den Drehlagerungen angeordnet und derart ausgestaltet, dass die Walze gegenüber einer Biegebelastung verstärkt ist.A roller assembly has a roller and two rotary bearings. According to the invention, it is provided that the roller has a reinforcement with a fiber composite material which is arranged inside the roller, wherein the ratio of the distance of the radial line of action of the rotary bearing to the roller end relative to the total length of the roller is in the range of 0.015 to 0.05. The reinforcement is preferably arranged between the rotary bearings and designed such that the roller is reinforced in relation to a bending load.

Die Verstärkung mit einem Faserverbundwerkstoff kann verschiedene Ausgestaltungen aufweisen. So kann die Verstärkung ein Rohr aus einem Faserverbundwerkstoff aufweisen, welches von Innen an der Walze anliegt. Alternativ oder zusätzlich kann die Verstärkung Leisten aus einem Faserverbundwerkstoff aufweisen, welche parallel zur Walzenachse verlaufen und innerhalb der Walze radial angeordnet sind. Sofern Leisten verwendet werden, kann zusätzlich ein Stützrohr vorgesehen werden, um die Leisten aus einem Faserverbundwerkstoff von Innen abzustützen.The reinforcement with a fiber composite material may have various configurations. Thus, the reinforcement can be a tube made of a fiber composite material have, which rests from the inside of the roller. Alternatively or additionally, the reinforcement may comprise strips of a fiber composite material, which run parallel to the roll axis and are arranged radially within the roll. If strips are used, a support tube can additionally be provided in order to support the strips of a fiber composite material from the inside.

Durch die Verstärkung mit einem Faserverbundwerkstoff wird eine hohe Steifigkeit der Walzenanordnung erreicht, wobei die Walze mit der Verstärkung gleichzeitig ein relativ geringes Trägheitsmoment aufweist. Dadurch kann die Walzenanordnung bzw. die Rotationsdruckmaschine mit einer oder mehreren erfindungsgemäßen Walzenanordnungen im Störungsfall schneller zum Stillstand gebracht werden, als dies bei Walzenanordnungen nach dem Stand der Technik der Fall ist, wobei die Bremswirkung über die Papierbahn vermittelt wird.The reinforcement with a fiber composite material high rigidity of the roller assembly is achieved, wherein the roller with the reinforcement at the same time has a relatively low moment of inertia. As a result, the roller arrangement or the rotary printing machine can be brought to a standstill faster in case of failure with one or more roller assemblies according to the invention, as is the case with prior art roller assemblies, wherein the braking effect is imparted through the paper web.

Erfindungsgemäß wird durch die Verstärkung außerdem die Durchbiegung der Walze, die aufgrund der Kraft der Papierbahn erzeugt wird, minimiert, damit die Papierbahn durch die Umlenkung nicht partiell gedehnt wird. Denn an einer Stelle mit einer hohen Durchbiegung ist der Weg, den die Papierbahn zurücklegen muss geringer als an einer Stelle mit einer geringen Durchbiegung.According to the reinforcement of the roll, which is generated due to the force of the paper web, also minimized by the gain, so that the paper web is not partially stretched by the deflection. Because at a point with a high deflection, the path that the paper web has to travel is less than at a point with a small deflection.

Die Drehlagerungen der Walzenanordnung können auf einer (feststehenden) Achse angeordnet sein, welche sich über die gesamte Länge der Walze erstreckt. Die Drehlagerungen sind dabei vorzugsweise an einem Endbereich der Walze angeordnet. Mit einer feststehenden Achse können die Drehlagerungen vorteilhaft abgestützt werden, wobei die Endpunkt der Achse, welche zur Befestigung der Walzenanordnung dienen, keine Biegemomente aufnehmen müssen.The rotary bearings of the roller assembly can be arranged on a (fixed) axis, which extends over the entire length of the roller. The rotary bearings are preferably arranged at an end region of the roller. With a fixed axis, the pivot bearings can be advantageously supported, wherein the end point of the axis, which serve to fasten the roller assembly, do not have to absorb bending moments.

Alternativ können die Drehlagerungen auf Achsabschnitten angeordnet sind, welche voneinander getrennt sind. Dies hat zwar den Nachteil, dass die Montage eventuell aufwendiger ist, und dass die Achsabschnitte auch Biegemomente aufnehmen müssen. Jedoch hat dies den Vorteil, dass sich die Leisten der Verstärkung, die sich gemeinsam mit der Walze im Betrieb drehen, über den Mittelpunkt hinweg erstrecken können, da keine durchgehende feststehene Achse im Wege steht.Alternatively, the pivot bearings can be arranged on axle sections which are separated from one another. Although this has the disadvantage that the assembly may be more expensive, and that the shaft sections must also absorb bending moments. However, this has the advantage that the bars of reinforcement, which rotate together with the roller in operation, can extend beyond the center, since no continuous solid axis in the way.

Erfindungsgemäß wurde die gesamte Walzenanordnung optimiert, um eine möglichst minimale Durchbiegung zu erreichen. Dabei wurden die Länge der Walze, die Position der Drehlagerungen, die Wanddicken der Walze und der Verstärkung mit Faserverbundwerkstoff berücksichtigt. Dabei wurde festgestellt, dass das Verhältnis von Abstand der radialen Wirkungslinie der Drehlagerung zum Walzenende gegenüber der Gesamtlänge der Walze vorteilhaft im Bereich von 0,015 bis 0.05 liegt, insbesondere von 0,03 bis 0,04, insbesondere etwa oder genau 0,035 liegt. Das Verhältnis von Außendurchmesser der Walze gegenüber der Gesamtlänge der Walze liegt vorzugsweise im Bereich von 0,03 bis 0,1, insbesondere von 0.04 bis 0.7, insbesondere etwa 0,05 bis 0.06, vorzugsweise etwa oder genau 0,54. Das Verhältnis der Wanddicke der Walze im Bereich zwischen den Drehlagerungen gegenüber dem Außendurchmesser der Walze liegt im Bereich von 0,01 bis 0.08, insbesondere von 0,02 bis 0,06, insbesondere etwa 0,015 bis 0,04, vorzugsweise etwa oder genau 0,03. Das Verhältnis der Wanddicke des Rohres aus Faserverbundwerkstoff gegenüber der Wanddicke der Walze im Bereich zwischen den Drehlagerungen liegt im Bereich von 0,2 bis 1,0, insbesondere von 0,5 bis 0,9, insbesondere etwa 0,6 bis 0,8, vorzugsweise etwa oder genau 0,71.According to the invention, the entire roller arrangement has been optimized in order to achieve the least possible deflection. The length of the roller, the position of the rotary bearings, the wall thicknesses of the roller and the reinforcement with fiber composite were taken into account. It has been found that the ratio of the distance between the radial line of action of the rotary bearing to the end of the roller relative to the total length of the roller is advantageously in the range of 0.015 to 0.05, in particular from 0.03 to 0.04, in particular about or exactly 0.035. The ratio of outer diameter of the roller to the total length of the roller is preferably in the range of 0.03 to 0.1, in particular 0.04 to 0.7, in particular about 0.05 to 0.06, preferably about or exactly 0.54. The ratio of the wall thickness of the roller in the area between the rotary bearings relative to the outer diameter of the roller is in the range of 0.01 to 0.08, in particular 0.02 to 0.06, in particular about 0.015 to 0.04, preferably about or exactly 0, 03. The ratio of the wall thickness of the fiber composite tube to the wall thickness of the roller in the region between the pivot bearings is in the range of 0.2 to 1.0, in particular 0.5 to 0.9, in particular about 0.6 to 0.8, preferably about or exactly 0.71.

An den Enden der Achsen sind vorzugsweise jeweils Walzendeckel angeordnet, wobei zwischen den Walzendeckeln und der Walze ein Luftspalt vorhanden ist. Der Luftspalt verläuft in Umfangsrichtung und liegt im Bereich von 0,3 bis 2 mm, insbesondere im Bereich von 0,5 bis 1,8 mm, insbesondere im Bereich von 0,9 bis 1,4 mm, vorzugsweise etwa oder genau 1,25 mm. Durch die Wirkung der feststehenden Walzendeckel und der rotierenden Walze wird ein Eindringen von Schmutz in das Innere der Walzenanordnung verhindert.At the ends of the axes preferably roller cover are arranged, wherein between the roller covers and the roller, an air gap is present. The air gap extends in the circumferential direction and is in the range of 0.3 to 2 mm, in particular in the range of 0.5 to 1.8 mm, in particular in the range of 0.9 to 1.4 mm, preferably about or exactly 1.25 mm. The action of the fixed roller cover and the rotating roller prevents dirt from entering the interior of the roller assembly.

Als Materialien für die Verstärkung aus Faserverbundwerkstoff können beispielsweise Multifilament-Carbonfasern oder Fasern auf Polyacrylnitril-Basis verwendet werden, die vorzugsweise durch Pyrolyse karbonisiert oder durch Graphitierung zu UltraHochModul-Fasern (UHM) veredelt werden. Die Fasern können in eine Matrix eingebettet werden, insbesondere in eine duroplastische Matrix bzw. eine Harz-Matrix (typischerweise Epoxidharz).As materials for the reinforcement of fiber composite, for example, multifilament carbon fibers or polyacrylonitrile-based fibers which are preferably carbonized by pyrolysis or refined by graphitization to Ultra High Modulus (UHM) fibers. The fibers can be embedded in a matrix, in particular in a duroplastic matrix or a resin matrix (typically epoxy resin).

Der Verlauf der Faserrichtungen ist im Bereich der gesamten Verstärkung vorzugsweise in Längsrichtung (in Bezug auf die Walzenachse). Bei Verwendung von Leisten ist es jedoch auch möglich, dass die Fasern alternativ oder zusätzlich im Winkelbereich von 30 - 60° zur Längsrichtung verlaufen, und ggfs. gekreuzt angeordnet sind.The course of the fiber directions is preferably in the region of the total reinforcement in the longitudinal direction (with respect to the roller axis). When using strips, however, it is also possible that the fibers run alternatively or additionally in the angular range of 30-60 ° to the longitudinal direction, and if necessary, are arranged crossed.

Kurze Beschreibung der FigurenBrief description of the figures

Fig. 1Fig. 1
zeigt einen Längsschnitt durch eine Walzenanordnung nach einer ersten Ausführungsform der vorliegenden Erfindung;shows a longitudinal section through a roller assembly according to a first embodiment of the present invention;
Fig. 2Fig. 2
zeigt einen Querschnitt durch eine Walzenanordnung nach der in Fig. 1 dargestellten Ausführungsform;shows a cross section through a roller assembly according to the in Fig. 1 illustrated embodiment;
Fig. 3Fig. 3
zeigt einen Längsschnitt durch eine Walzenanordnung nach einer zweiten Ausführungsform der vorliegenden Erfindung;shows a longitudinal section through a roller assembly according to a second embodiment of the present invention;
Fig. 4Fig. 4
zeigt einen Längsschnitt durch eine Walzenanordnung nach einer dritten Ausführungsform der vorliegenden Erfindung;shows a longitudinal section through a roller assembly according to a third embodiment of the present invention;
Fig. 5Fig. 5
zeigt einen Querschnitt durch eine Walzenanordnung nach der in Fig. 4 dargestellten Ausführungsform;shows a cross section through a roller assembly according to the in Fig. 4 illustrated embodiment;
Fig. 6Fig. 6
zeigt einen Längsschnitt durch eine Walzenanordnung nach einer vierten Ausführungsform der vorliegenden Erfindung;shows a longitudinal section through a roller assembly according to a fourth embodiment of the present invention;
Fig. 7Fig. 7
zeigt einen Querschnitt durch eine Walzenanordnung nach der in Fig. 6 dargestellten Ausführungsform;shows a cross section through a roller assembly according to the in Fig. 6 illustrated embodiment;
Fig. 8Fig. 8
zeigt einen Längsschnitt durch eine Walzenanordnung nach einer fünften Ausführungsform der vorliegenden Erfindung;shows a longitudinal section through a roller assembly according to a fifth embodiment of the present invention;
Fig. 9Fig. 9
zeigt einen Querschnitt durch eine Walzenanordnung nach der in Fig. 8 dargestellten Ausführungsform.shows a cross section through a roller assembly according to the in Fig. 8 illustrated embodiment.
Detailierte Beschreibung der AusführungsbeispieleDetailed description of the embodiments

Fig. 1 und Fig. 2 zeigen einen Längs- bzw. Querschnitt durch eine Walzenanordnung nach einer ersten Ausführungsform der vorliegenden Erfindung. Die dargestellte Walzenanordnung weist eine Walze 1 und zwei Drehlagerungen 2a, 2b auf. Erfindungsgemäß ist vorgesehen, dass die Walze 1 eine Verstärkung mit einem Faserverbundwerkstoff aufweist, die innerhalb der Walze 1 angeordnet ist. Die Verstärkung ist vorzugsweise zwischen den Drehlagerungen 2a, 2b angeordnet und derart ausgestaltet, dass die Walze 1 gegenüber einer Biegebelastung verstärkt ist. Fig. 1 and Fig. 2 show a longitudinal or cross section through a roller assembly according to a first embodiment of the present invention. The illustrated roller assembly comprises a roller 1 and two rotary bearings 2a, 2b . According to the invention, it is provided that the roller 1 has a reinforcement with a fiber composite material, which is arranged inside the roller 1 . The reinforcement is preferably arranged between the rotary bearings 2a, 2b and designed such that the roller 1 is reinforced with respect to a bending load.

Die Verstärkung besteht in der in Fig. 1 dargestellten Ausführungsform aus einem Rohr 3 aus einem Faserverbundwerkstoff, welches von Innen an der Walze 1 anliegt. Wie bereits ausgeführt, wird durch die Verstärkung eine hohe Steifigkeit der Walzenanordnung erreicht, wobei die Walze mit der Verstärkung gleichzeitig ein relativ geringes Trägheitsmoment aufweist. Dadurch kann die Walzenanordnung bzw. die Rotationsdruckmaschine mit einer oder mehreren erfindungsgemäßen Walzenanordnungen im Störungsfall schneller zum Stillstand gebracht werden, als dies bei Walzenanordnungen nach dem Stand der Technik der Fall ist, wobei die Bremswirkung über die Papierbahn vermittelt wird. Außerdem wird durch die Verstärkung die Durchbiegung der Walze, die aufgrund der Kraft der Papierbahn erzeugt wird, minimiert, damit die Papierbahn durch die Umlenkung nicht partiell gedehnt wird. Denn an einer Stelle mit einer hohen Durchbiegung ist der Weg, den die Papierbahn zurücklegen muss geringer als an einer Stelle mit einer geringen Durchbiegung.The reinforcement consists in the in Fig. 1 illustrated embodiment of a tube 3 made of a fiber composite material, which rests from the inside to the roller 1 . As already stated, the reinforcement achieves a high rigidity of the roller arrangement, with the roller simultaneously having a relatively low moment of inertia with the reinforcement. As a result, the roller arrangement or the rotary printing press can be brought to a standstill faster in the event of a malfunction with one or more roller arrangements according to the invention than is the case with roller arrangements according to the prior art, wherein the braking effect is mediated via the paper web. In addition, the reinforcement minimizes the deflection of the roll, which is generated due to the force of the paper web, so that the paper web is not partially stretched by the deflection. Because at a point with a high deflection, the path that the paper web has to travel is less than at a point with a small deflection.

Die Drehlagerungen 2a, 2b der Walzenanordnung sind bei der Ausführungsform nach Fig. 1 auf einer feststehenden Achse 8 angeordnet, welche sich über die gesamte Länge der Walze erstreckt. Die Drehlagerungen 2a, 2b sind dabei an einem Endbereich der Walze, d.h. rechts und links angeordnet. Mit einer feststehenden Achse können die Drehlagerungen vorteilhaft abgestützt werden, wobei die Endpunkt der Achse, welche zur Befestigung der Walzenanordnung dienen, keine Biegemomente aufnehmen müssen.The rotary bearings 2a, 2b of the roller assembly are in the embodiment according to Fig. 1 arranged on a fixed axis 8 , which extends over the entire length of the roller. The rotary bearings 2a, 2b are arranged at an end region of the roller, ie right and left. With a fixed Axis, the pivot bearings can be supported advantageously, the end point of the axis, which serve to fasten the roller assembly, do not have to absorb bending moments.

Erfindungsgemäß wurde die gesamte Walzenanordnung optimiert, um eine möglichst minimale Durchbiegung zu erreichen. Dabei wurden die Länge der Walze, die Position der Drehlagerungen, die Wanddicken der Walze und der Verstärkung mit Faserverbundwerkstoff berücksichtigt. Dabei wurde festgestellt, dass das Verhältnis von Abstand der radialen Wirkungslinie der Drehlagerung zum Walzenende gegenüber der Gesamtlänge der Walze vorteilhaft bei etwa 0,035 liegt. Das Verhältnis von Außendurchmesser der Walze gegenüber der Gesamtlänge der Walze liegt vorzugsweise bei etwa 0,54. Das Verhältnis der Wanddicke der Walze im Bereich zwischen den Drehlagerungen gegenüber dem Außendurchmesser der Walze liegt bei etwa 0,03. Das Verhältnis der Wanddicke des Rohres aus Faserverbundwerkstoff gegenüber der Wanddicke der Walze im Bereich zwischen den Drehlagerungen liegt bei etwa 0,71.According to the invention, the entire roller arrangement has been optimized in order to achieve the least possible deflection. The length of the roller, the position of the rotary bearings, the wall thicknesses of the roller and the reinforcement with fiber composite were taken into account. It was found that the ratio of the distance between the radial line of action of the pivot bearing to the end of the roll over the total length of the roll is advantageously about 0.035. The ratio of outer diameter of the roll to the total length of the roll is preferably about 0.54. The ratio of the wall thickness of the roller in the area between the pivot bearings relative to the outer diameter of the roller is about 0.03. The ratio of the wall thickness of the fiber composite pipe to the wall thickness of the roll in the area between the rotary bearings is about 0.71.

An den Enden der Achsen sind vorzugsweise jeweils Walzendeckel 10a, 10b angeordnet, wobei zwischen den Walzendeckeln 10a, 10b und der Walze ein Luftspalt 11 vorhanden ist. Der Luftspalt verläuft in Umfangsrichtung und liegt im Bereich von 1,25 mm. Durch die Wirkung der feststehenden Walzendeckel und der rotierenden Walze wird ein Eindringen von Schmutz in das Innere der Walzenanordnung verhindert.Roller covers 10a, 10b are preferably respectively arranged at the ends of the axles, an air gap 11 being present between the roller covers 10a, 10b and the roller. The air gap runs in the circumferential direction and is in the range of 1.25 mm. The action of the fixed roller cover and the rotating roller prevents dirt from entering the interior of the roller assembly.

Fig. 3 zeigt einen Längsschnitt durch eine Walzenanordnung nach einer zweiten Ausführungsform der vorliegenden Erfindung. Diese Ausführungsform entspricht der ersten Ausführungsform mit der Ausnahme, dass keine durchgehende Achse vorhanden ist. Stattdessen sind die Drehlagerungen 2a, 2b auf Achsabschnitten 9a, 9b angeordnet, welche voneinander getrennt sind. Fig. 3 shows a longitudinal section through a roller assembly according to a second embodiment of the present invention. This embodiment corresponds to the first embodiment except that there is no continuous axis. Instead, the pivot bearings 2a, 2b are arranged on axle sections 9a, 9b , which are separated from one another.

Fig. 4 und Fig. 5 zeigen einen Längs- bzw. Querschnitt durch eine Walzenanordnung nach einer dritten Ausführungsform der vorliegenden Erfindung. Diese Ausführungsform entspricht der zweiten Ausführungsform, wobei die Verstärkung zusätzlich Leisten 4 aus einem Faserverbundwerkstoff aufweist, welche parallel Walzenachse verlaufen und innerhalb der Walze 1 radial angeordnet sind. Wie in Fig. 5 dargestellt ist, erstrecken sich die Leisten über den Walzenmittelpunkt. Wie bereits ausgeführt, hat zwar den Nachteil, dass die Montage eventuell aufwendiger ist, und dass die Achsabschnitte auch Biegemomente aufnehmen müssen, da keine durchgehende Achse vorhanden ist. Jedoch hat dies den Vorteil, dass sich die Leisten 4, die sich gemeinsam mit der Walze im Betrieb drehen, eine sehr hohe Versteifungswirkung haben. 4 and FIG. 5 show a longitudinal or cross section through a roller assembly according to a third embodiment of the present invention. This embodiment corresponds to the second embodiment, wherein the reinforcement additionally comprises strips 4 made of a fiber composite material which extend parallel to the roll axis and are arranged radially inside the roll 1. As in Fig. 5 is shown, the strips extend over the roller center. As stated above, although the disadvantage that the assembly may be more expensive, and that the shaft sections must also absorb bending moments, since no continuous axis is present. However, this has the advantage that the strips 4 , which rotate together with the roller in operation, have a very high stiffening effect.

Fig. 6 und Fig. 7 zeigen einen Längs- bzw. Querschnitt durch eine Walzenanordnung nach einer vierten Ausführungsform der vorliegenden Erfindung. In dieser Ausführungsform sind ebenfalls Leisten 6 vorgesehen, die sich jedoch nicht über den Walzenmittelpunkt hinweg erstrecken. Zur Versteifung ist hier radial innenliegend in Bezug auf die Leisten 6 ein weiteres Stützrohr 5 vorgesehen, um die Leisten 6 aus einem Faserverbundwerkstoff von Innen abzustützen. Das Stützrohr kann ebenfalls aus dem Faserverbundwerkstoff bestehen. Außerdem kann zusätzlich auch ein Rohr 3 vorgesehen werden, wie dies bei der ersten Ausführungsform der Fall ist. Fig. 6 and Fig. 7 show a longitudinal or cross section through a roller assembly according to a fourth embodiment of the present invention. In this embodiment, strips 6 are also provided, but do not extend beyond the roller center. For stiffening, a further support tube 5 is provided here radially inwardly with respect to the strips 6 in order to support the strips 6 of a fiber composite material from the inside. The support tube may also consist of the fiber composite material. In addition, a tube 3 may be provided in addition, as is the case in the first embodiment.

Fig. 8 und Fig. 9 zeigen einen Längs- bzw. Querschnitt durch eine Walzenanordnung nach einer fünften Ausführungsform der vorliegenden Erfindung. Diese Ausführungsform weist als Verstärkung ausschließlich Leisten 7 aus Faserverbundwerkstoff auf, jedoch kein Rohr aus einem Faserverbundwerkstoff. FIGS. 8 and 9 show a longitudinal or cross section through a roller assembly according to a fifth embodiment of the present invention. This embodiment has as a reinforcement exclusively strips 7 made of fiber composite material, but no tube made of a fiber composite material.

Als Materialien für die Verstärkung aus Faserverbundwerkstoff können beispielsweise Multifilament-Carbonfasern oder Fasern auf Polyacrylnitril-Basis verwendet werden, die vorzugsweise durch Pyrolyse karbonisiert oder durch Graphitierung zu UltraHochmodul-Fasern (UHM) veredelt werden. Die Fasern können in eine Matrix eingebettet werden, insbesondere in eine duroplastische Matrix bzw. eine Harz-Matrix (typischerweise Epoxidharz).As materials for the reinforcement of fiber composite material, for example, multifilament carbon fibers or polyacrylonitrile-based fibers can be used, which are preferably carbonized by pyrolysis or refined by graphitization to UltraHochmodul fibers (UHM). The fibers can be embedded in a matrix, in particular in a duroplastic matrix or a resin matrix (typically epoxy resin).

Der Verlauf der Faserrichtungen ist im Bereich der gesamten Verstärkung vorzugsweise in Längsrichtung (in Bezug auf die Walzenachse). Bei Verwendung von Leisten ist es jedoch auch möglich, dass die Fasern alternativ oder zusätzlich im Winkelbereich von 30 - 60° zur Längsrichtung verlaufen, und ggfs. gekreuzt angeordnet sind.The course of the fiber directions is preferably in the region of the total reinforcement in the longitudinal direction (with respect to the roller axis). When using strips, however, it is also possible that the fibers run alternatively or additionally in the angular range of 30-60 ° to the longitudinal direction, and if necessary, are arranged crossed.

Die Verstärkung kann bei allen Ausführungsbeispielen in einem Zustand eingebracht werden, wenn die Matrix bzw. das Epoxidharz noch nicht ausgehärtet ist. Auf diese Weise wird ein fester Verbund zwischen der Verstärkung und der Walze erreicht. Alternativ kann die Verstärkung auch vorher ausgeformt werden, und anschließend in die Walze eingeschoben und eingeklebt werden.The reinforcement can be introduced in all embodiments in a state when the matrix or the epoxy resin is not yet cured. In this way, a firm bond between the reinforcement and the roller is achieved. Alternatively, the reinforcement can also be formed beforehand, and then inserted and glued into the roll.

Nach der Montage wird die Walzenanordnung gewuchtet, wobei - sofern erforderlich - Ausgleichsgewichte im Walzeninneren an geeigneten Stellen angeordnet bzw. angeklebt werden.After assembly, the roll assembly is balanced, wherein - if necessary - balancing weights are arranged or glued in the interior of the roll at appropriate locations.

Die Drehlager sind in den Ausführungsbeispielen als Kugellager dargestellt. Es können jedoch stattdessen auch Gleitlager oder Luftlager verwendet werden.The pivot bearings are shown in the embodiments as a ball bearing. However, plain bearings or air bearings can be used instead.

Claims (14)

  1. Roll arrangement having one roll (1) and two rotational bearings (2a, 2b), wherein the roll (1) has a reinforcement with a fiber composite arranged inside the roll,
    characterized in that the ratio of the distance of the radial line of action of the rotational bearing to the roll end compared to the total length of the roll is in the rage of 0.015 to 0.05.
  2. Roll arrangement of claim 1 characterized in that the ratio of the distance of the radial line of action of the rotational bearing to the roll end compared to the total length of the roll is in the range of 0.03 to 0.04.
  3. Roll arrangement of claim 1 characterized in that the ratio of the distance of the radial line of action of the rotational bearing to the roll end compared to the total length of the roll is about or exactly 0.035.
  4. Roll arrangement of one of the claims 1 to 3 characterized in that the reinforcement with a fiber composite is arranged between the bearings (2a, 2b) and is formed such that the roll (1) is reinforced against a bending stress.
  5. Roll arrangement of one of the claims 1 to 4 characterized in that the reinforcement has a pipe (3) made of a fiber composite laying against the interior of the roll (1).
  6. Roll arrangement of one of the preceding claims characterized in that the rotational bearings (2a, 2b) are arranged on an axis (8) extending about the entire length of the roll.
  7. Roll arrangement of one of the claims 1 to 5 characterized in that the rotational bearings (2a, 2b) are arranged on axis intercepts (9a, 9b) separated from each other.
  8. Roll arrangement of one of the preceding claims characterized in that respectively one rotational bearing (2a, 2b) is arranged at one end of the roll.
  9. Roll arrangement of one of the preceding claims characterized in that the ratio of the external diameter of the roll compared to the total length of the roll is in the range of 0.03 to 0.1, in particular of 0.04 to 0.07, in particular about 0.05 to 0.06.
  10. Roll arrangement of one of the preceding claims characterized in that the ratio of the wall thickness of the roll in the area between the bearings compared to the external diameter of the roll is in the range of 0.01 to 0.08, in particular of 0.02 to 0.06, in particular about 0.015 to 0.04.
  11. Roll arrangement of one of the claims 5 to 10 characterized in that the ratio of the wall thickness of the fiber composite pipe compared to the wall thickness of the roll in the area between the bearings is in the range of 0.2 to 1.0, in particular of 0.5 to 0.9, in particular about 0.6 to 0.8.
  12. Roll arrangement of one of the claims 7 to 11 characterized in that at the end of the axis roll covers (10a, 10b) are respectively arranged wherein there is a gap (11) between the roll covers (10a, 10b) and the roll.
  13. Roll arrangement of claim 12 characterized in that the gap runs in circumference direction and is in the range of 0.3 to 2 mm, in particular in the range of 0.5 to 1.8 mm, in particular in the range of 0.9 to 1.4 mm.
  14. Printing press, in particular rotary printing press, characterized by one or more roll arrangements of one of the preceding claims.
EP09165302A 2009-07-13 2009-07-13 Roller for a printing press Active EP2275372B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES09165302T ES2386932T3 (en) 2009-07-13 2009-07-13 Easy March Roller
EP09165302A EP2275372B1 (en) 2009-07-13 2009-07-13 Roller for a printing press
US12/824,276 US20110005414A1 (en) 2009-07-13 2010-06-28 Low Friction Roll
JP2010146202A JP5656473B2 (en) 2009-07-13 2010-06-28 Roll assembly for printing press
CA2709113A CA2709113C (en) 2009-07-13 2010-07-07 Fiber composite reinforced printing roll
CN201010231325.2A CN101954778B (en) 2009-07-13 2010-07-13 Low friction roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09165302A EP2275372B1 (en) 2009-07-13 2009-07-13 Roller for a printing press

Publications (2)

Publication Number Publication Date
EP2275372A1 EP2275372A1 (en) 2011-01-19
EP2275372B1 true EP2275372B1 (en) 2012-05-30

Family

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Family Applications (1)

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EP09165302A Active EP2275372B1 (en) 2009-07-13 2009-07-13 Roller for a printing press

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US (1) US20110005414A1 (en)
EP (1) EP2275372B1 (en)
JP (1) JP5656473B2 (en)
CN (1) CN101954778B (en)
CA (1) CA2709113C (en)
ES (1) ES2386932T3 (en)

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Also Published As

Publication number Publication date
JP2011021746A (en) 2011-02-03
JP5656473B2 (en) 2015-01-21
CN101954778A (en) 2011-01-26
CN101954778B (en) 2013-03-06
CA2709113C (en) 2014-06-17
CA2709113A1 (en) 2011-01-13
EP2275372A1 (en) 2011-01-19
ES2386932T3 (en) 2012-09-06
US20110005414A1 (en) 2011-01-13

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