EP1025996A1 - Forme cylinder - Google Patents

Forme cylinder Download PDF

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Publication number
EP1025996A1
EP1025996A1 EP99102033A EP99102033A EP1025996A1 EP 1025996 A1 EP1025996 A1 EP 1025996A1 EP 99102033 A EP99102033 A EP 99102033A EP 99102033 A EP99102033 A EP 99102033A EP 1025996 A1 EP1025996 A1 EP 1025996A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
cylinder
cylinder core
core
printing
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.)
Granted
Application number
EP99102033A
Other languages
German (de)
French (fr)
Other versions
EP1025996B1 (en
Inventor
Manfred Terstegen
Wilfried Dr. Kolbe
Klaus Schirrich
Bodo Steinmeier
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.)
Fischer and Krecke GmbH and Co KG
Original Assignee
Fischer and Krecke 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.)
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Application filed by Fischer and Krecke GmbH and Co KG filed Critical Fischer and Krecke GmbH and Co KG
Priority to ES99102033T priority Critical patent/ES2166201T3/en
Priority to DE59900456T priority patent/DE59900456D1/en
Priority to EP99102033A priority patent/EP1025996B1/en
Priority to US09/489,729 priority patent/US6523470B2/en
Priority to JP2000023069A priority patent/JP2000225681A/en
Publication of EP1025996A1 publication Critical patent/EP1025996A1/en
Application granted granted Critical
Publication of EP1025996B1 publication Critical patent/EP1025996B1/en
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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
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • 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
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/16—Curved printing plates, especially cylinders
    • B41N1/22—Curved printing plates, especially cylinders made of other substances

Definitions

  • the description relates to a pressure cylinder with a metal cylinder core, on which a carbon fiber-containing sleeve is arranged.
  • the print length is due to the effective diameter of the printing cylinder carrying the clichés. So not for everyone you want Print length of a special cylinder with the associated bearing structures needed, it is known on the peripheral surface of the cylinder core to postpone a replaceable sleeve called a sleeve then the effective diameter and thus the print length is determined.
  • EP-A-0 732 201 describes a printing cylinder of this type in which the Sleeve has a multilayer structure. Two layers from one through Carbon fiber reinforced composite material form an intermediate space with Plastic is foamed. The inner surface of the sleeve lies well on the peripheral surface of the steel core, so that during the printing process occurring relatively high radial forces due to the relatively soft Foam layer of the sleeve through on the rigid cylinder core can be transferred.
  • a disadvantage of this construction is that with the help of the sleeve only a limited increase in print length is achieved because larger ones Print lengths, the layer thickness of the sleeve would be so great that the necessary stiffness and dimensional accuracy of the outer surface of the sleeve is no longer guaranteed could be.
  • Another disadvantage is that the replacement of the sleeve is relatively labor-intensive, since the sleeve covers the entire surface rests on the cylinder core and thus when pushed on or pulled off high friction forces have to be overcome. To reduce these frictional forces it is known to introduce compressed air into the interior of the cylinder core, the via radial openings in the space between the cylinder core and Sleeve enters.
  • EP-A-0 769 373 describes a pressure cylinder in which the sleeve, the the print length determines, at both axial ends stub axle with a smaller one Has diameter and is stored directly in the machine frame.
  • a yourself steel shaft extending through the sleeve spaced from the sleeve is only used to remove the sleeve when changing the sleeve Raise bearings and hold them so that they are axially withdrawn from the shaft can be.
  • the object of the invention is to provide a pressure cylinder in which the Print length can be varied over a wide range by changing the sleeve can without affecting the print quality.
  • this object is mentioned in the case of a pressure cylinder of the input Art solved in that the sleeve is self-supporting and through in the area disks arranged at both ends at a distance from the circumferential surface of the cylinder core is held.
  • the term "self-supporting" in this context means that the sleeve has such a high degree of inherent rigidity that, although only at the ends is supported by the disks on the cylinder core, those that occur during printing Can withstand radial forces, so that occurring in the sleeve Deformations remain within the permissible tolerance limits. It has shown, that this property of the sleeve through the use of a carbon fiber existing or reinforced by carbon fiber material can. Because of the relatively low specific weight of such a material the total weight and moment of inertia of the sleeve remain relative low, which is beneficial to the smooth running of the press and to the Manageability affects the sleeve or the entire printing cylinder.
  • the effective diameter of the sleeve not like conventional sleeves alone determined by the layer thickness of the sleeves, but it is largely determined by determines the distance between the sleeve and the cylinder core. This allows the Use of sleeves with relatively large diameters, so that accordingly large print lengths can be achieved.
  • Another advantage of the invention is that the sleeve is essential can be removed more easily from the cylinder core, since they are only arranged at the ends Disks is supported on the cylinder core, so that only relatively small Frictional forces occur.
  • the two disks can be made from a different material from the sleeve Material, for example made of steel or aluminum. You can however, optionally also consist of the same material as the sleeve or even be formed in one piece with the sleeve. It is also possible to form these washers bearing pins with which the sleeve directly in the machine frame is stored.
  • the cylinder core is preferably also one without the Sleeve insertable pressure cylinder.
  • the impression cylinder can be opened a minimum print length can be set by simply omitting the sleeve becomes.
  • the clichés can then be arranged on a conventional sleeve be pushed onto the impression cylinder, but you can choose can also be clamped directly onto the circumferential surface of the cylinder core.
  • the cylinder core preferably has a compressed air line in a manner known per se lead from the radial openings to the peripheral surface.
  • a compressed air line in a manner known per se lead from the radial openings to the peripheral surface.
  • the printing cylinder shown in Fig. 1 has a cylinder core 10, which is preferably is formed by a conventional steel pressure cylinder and is provided at both ends with stub axles 12, the storage in enable a machine frame, not shown. Furthermore, the cylinder core 10, as is known per se in the case of pressure cylinders, an axial bore 14 on which compressed air can be supplied, which then has radial openings 16 can emerge from the peripheral surface 18 of the cylinder core.
  • the cylinder core 10 is surrounded at a distance by a cylindrical sleeve 20, which is formed by a tubular body made of carbon fiber composite material becomes.
  • a tubular body made of carbon fiber composite material and so far for example as web guide rollers in printing machines or, if necessary also used as a printing cylinder for shorter printing lengths.
  • this tubular body is a scaffold made of diagonally wound carbon fibers, which a matrix of plastic are embedded.
  • the sleeve 20 is at both ends by flat washers 22 made of steel or aluminum completed and is supported only by these discs on the cylinder core 10 from.
  • the disks 22 are non-rotatably connected to the cylinder core 10, as symbolized in the drawing by wedges 24.
  • the sleeve 20 rotatably connected to the disks 22, so that the cylinder core 10 and the sleeve 20 together a rigid, bending and torsional stiffness Form the pressure cylinder.
  • Clichés not shown, can be on the outer peripheral surface the sleeve 20 are clamped.
  • the sleeve 20 however, a conventional sleeve can also be pushed on, which in turn is then carries the clichés.
  • For easier replacement of such a sleeve also has the sleeve 20 openings 26 with which those from the openings 16 of the cylinder core escaping compressed air to the peripheral surface of the sleeve can be forwarded.
  • the dimensions of the impression cylinder can vary within a wide range.
  • the outer diameter of the impression cylinder can be expanded widely Change area. Due to the relatively small wall thickness of the sleeve 20 and the low specific weight of this sleeve also increases with large ones Outside diameter, the total weight and the moment of inertia of the Printing cylinder not significantly.
  • the working width of the impression cylinder is about 800 to 2000 mm
  • the diameter of the cylinder core 10 about 10 mm, corresponding to a minimum print length of the order of magnitude of just over 30 mm
  • the outer diameter of the sleeve 20 is, for example up to 400 mm.
  • the wall thickness of the sleeve 20 is of the order of magnitude from about 15 to 20 mm. Because of the carbon fiber reinforced material this wall thickness sufficient to the required inherent rigidity of the sleeve 20 guarantee. Those that act on the outer surface of the sleeve when printing Radial forces are introduced into the two disks 22 without the Sleeve 20 deformed significantly. Because the force transmission in the cylinder core 10 in the vicinity of the stub axle 12 is also a training of the cylinder core 10 largely avoided. In addition, the bending stiffness of the printing cylinder increased overall by the shell-shaped structure.
  • the disks 22 are flush with the ends of the sleeve 20, 2 shows an embodiment in which the disks 22 face each other the sleeve are slightly indented.
  • the discs 22 will have a better distribution of the support forces on the Length of the sleeve 20 and thus a significant reduction in printing reached bending moments acting on the sleeve 20.
  • they are bending moments acting on the cylinder core 10 slightly increased, but lift these effects do not affect each other, but the end result will be higher Bending rigidity of the impression cylinder reached.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Rotary Presses (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Ceramic Products (AREA)

Abstract

The printing cylinder has a cylinder core (10) on which a sleeve (20) containing carbon fiber is arranged. The sleeve is self-supporting and held spaced apart from the peripheral surface (18) of the cylinder core by plates (22) at both ends. The cylinder core is designed to be used as a printing cylinder, independent of the sleeve. The core has an axial channel (14) for compressed air.

Description

Die Beschreibung betrifft einen Druckzylinder mit einem Zylinderkern aus Metall, auf dem eine kohlefaserhaltige Hülse angeordnet ist.The description relates to a pressure cylinder with a metal cylinder core, on which a carbon fiber-containing sleeve is arranged.

Bei einer Druckmaschine ist die Drucklänge durch den effektiven Durchmesser des die Klischees tragenden Druckzylinders bestimmt. Damit nicht für jede gewünschte Drucklänge ein spezieller Zylinder mit den jeweils zugehörigen Lagerkonstruktionen benötigt wird, ist es bekannt, auf die Umfangsfläche des Zylinderkerns eine als Sleeve bezeichnete auswechselbare Hülse aufzuschieben, die dann den effektiven Durchmesser und damit die Drucklänge bestimmt.For a printing press, the print length is due to the effective diameter of the printing cylinder carrying the clichés. So not for everyone you want Print length of a special cylinder with the associated bearing structures needed, it is known on the peripheral surface of the cylinder core to postpone a replaceable sleeve called a sleeve then the effective diameter and thus the print length is determined.

In EP-A-0 732 201 wird ein Druckzylinder dieser Art beschrieben, bei dem das Sleeve einen mehrschichtigen Aufbau aufweist. Zwei Schichten aus einem durch Kohlefasern verstärkten Verbundmaterial bilden einen Zwischenraum, der mit Kunststoff ausgeschäumt ist. Die Innenfläche des Sleeves liegt satt an der Umfangsfläche des aus Stahl bestehenden Zylinderkerns an, damit die beim Druckvorgang auftretenden relativ hohen Radialkräfte durch die verhältnismäßig weiche Schaumstoffschicht des Sleeves hindurch auf den starren Zylinderkern übertragen werden können.EP-A-0 732 201 describes a printing cylinder of this type in which the Sleeve has a multilayer structure. Two layers from one through Carbon fiber reinforced composite material form an intermediate space with Plastic is foamed. The inner surface of the sleeve lies well on the peripheral surface of the steel core, so that during the printing process occurring relatively high radial forces due to the relatively soft Foam layer of the sleeve through on the rigid cylinder core can be transferred.

Ein Nachteil dieser Konstruktion besteht darin, daß mit Hilfe des Sleeves nur eine begrenzte Vergrößerung der Drucklänge erreicht ist, weil bei größeren Drucklängen die Schichtdicke des Sleeves so groß würde, daß die nötige Verformungssteifheit und Maßhaltigkeit der Außenfläche des Sleeves nicht mehr gewährleistet werden könnte. Ein weiterer Nachteil besteht darin, daß das Auswechseln des Sleeves relativ arbeitsaufwendig ist, da das Sleeve mit ganzer Fläche auf dem Zylinderkern aufliegt und somit beim Aufschieben oder Abziehen hohe Reibungskräfte zu überwinden sind. Zur Verringerung dieser Reibungskräfte ist es bekannt, Druckluft in das Innere des Zylinderkerns einzuleiten, die über radiale Durchbrüche in den Zwischenraum zwischen Zylinderkern und Sleeve eintritt.A disadvantage of this construction is that with the help of the sleeve only a limited increase in print length is achieved because larger ones Print lengths, the layer thickness of the sleeve would be so great that the necessary stiffness and dimensional accuracy of the outer surface of the sleeve is no longer guaranteed could be. Another disadvantage is that the replacement of the sleeve is relatively labor-intensive, since the sleeve covers the entire surface rests on the cylinder core and thus when pushed on or pulled off high friction forces have to be overcome. To reduce these frictional forces it is known to introduce compressed air into the interior of the cylinder core, the via radial openings in the space between the cylinder core and Sleeve enters.

In EP-A-0 769 373 wird ein Druckzylinder beschrieben, bei dem die Hülse, die die Drucklänge bestimmt, an beiden axialen Enden Achsstummel mit kleinerem Durchmesser aufweist und direkt im Maschinengestell gelagert ist. Eine sich durch die Hülse erstreckende Welle aus Stahl, die von der Hülse mit Abstand umgeben wird, dient lediglich dazu, die Hülse bei einem Hülsenwechsel aus den Lagern auszuheben und so zu halten, daß sie axial von der Welle abgezogen werden kann.EP-A-0 769 373 describes a pressure cylinder in which the sleeve, the the print length determines, at both axial ends stub axle with a smaller one Has diameter and is stored directly in the machine frame. A yourself steel shaft extending through the sleeve spaced from the sleeve is only used to remove the sleeve when changing the sleeve Raise bearings and hold them so that they are axially withdrawn from the shaft can be.

Aufgabe der Erfindung ist es, einen Druckzylinder zu schaffen, bei dem die Drucklänge durch Auswechseln der Hülse in einem weiten Bereich variiert werden kann, ohne daß die Druckqualität beeinträchtigt wird.The object of the invention is to provide a pressure cylinder in which the Print length can be varied over a wide range by changing the sleeve can without affecting the print quality.

Diese Aufgabe wird erfindungsgemäß bei einem Druckzylinder der Eingangs genannten Art dadurch gelöst, daß die Hülse selbsttragend und durch im Bereich beider Enden angeordnete Scheiben auf Abstand zur Umfangsfläche des Zylinderkerns gehalten ist.According to the invention, this object is mentioned in the case of a pressure cylinder of the input Art solved in that the sleeve is self-supporting and through in the area disks arranged at both ends at a distance from the circumferential surface of the cylinder core is held.

Der Begriff "selbsttragend" bedeutet in diesem Zusammenhang, daß die Hülse eine so hohe Eigensteifheit aufweist, daß sie, obwohl sie nur an den Enden durch die Scheiben am Zylinderkern abgestützt ist, den beim Drucken auftretenden Radialkräften standhalten kann, so daß die in der Hülse auftretenden Verformungen innerhalb der zulässigen Toleranzgrenzen bleiben. Es hat sich gezeigt, daß diese Eigenschaft der Hülse durch die Verwendung eines aus Kohlefasern bestehenden oder durch Kohlefasem verstärkten Materials erreicht werden kann. Aufgrund des relativ geringen spezifischen Gewichts eines solchen Materials bleibt dabei das Gesamtgewicht und das Trägheitsmoment der Hülse relativ niedrig, was sich günstig auf die Laufruhe der Druckmaschine und auf die Handhabbarkeit der Hülse bzw. des gesamten Druckzylinders auswirkt. Da die Hülse auf Abstand zur Umfangsfläche des Zylinderkerns gehalten wird, wird der effektive Durchmesser der Hülse nicht wie bei herkömmlichen Sleeves allein durch die Schichtdicke der Sleeves bestimmt, sondern er wird maßgeblich durch das Abstandsmaß zwischen Hülse und Zylinderkern bestimmt. Dies erlaubt die Verwendung von Hülsen mit relativ großen Durchmessern, so daß entsprechend große Drucklängen erreicht werden können.The term "self-supporting" in this context means that the sleeve has such a high degree of inherent rigidity that, although only at the ends is supported by the disks on the cylinder core, those that occur during printing Can withstand radial forces, so that occurring in the sleeve Deformations remain within the permissible tolerance limits. It has shown, that this property of the sleeve through the use of a carbon fiber existing or reinforced by carbon fiber material can. Because of the relatively low specific weight of such a material the total weight and moment of inertia of the sleeve remain relative low, which is beneficial to the smooth running of the press and to the Manageability affects the sleeve or the entire printing cylinder. Since the Sleeve is held at a distance from the circumferential surface of the cylinder core, the effective diameter of the sleeve not like conventional sleeves alone determined by the layer thickness of the sleeves, but it is largely determined by determines the distance between the sleeve and the cylinder core. This allows the Use of sleeves with relatively large diameters, so that accordingly large print lengths can be achieved.

Ein weiterer Vorteil der Erfindung besteht darin, daß sich die Hülse wesentlich leichter vom Zylinderkern abziehen läßt, da sie nur durch die an den Enden angeordneten Scheiben auf dem Zylinderkern abgestützt ist, so daß nur relativ geringe Reibungskräfte auftreten.Another advantage of the invention is that the sleeve is essential can be removed more easily from the cylinder core, since they are only arranged at the ends Disks is supported on the cylinder core, so that only relatively small Frictional forces occur.

Die beiden Scheiben können aus einem von dem Material der Hülse verschiedenen Material, beispielsweise aus Stahl oder Aluminium hergestellt sein. Sie können jedoch wahlweise auch aus demselben Material wie die Hülse bestehen oder sogar in einem Stück mit der Hülse ausgebildet sein. Ebenso ist es möglich, an diesen Scheiben Lagerzapfen auszubilden, mit denen die Hülse direkt im Maschinengestell gelagert wird.The two disks can be made from a different material from the sleeve Material, for example made of steel or aluminum. You can however, optionally also consist of the same material as the sleeve or even be formed in one piece with the sleeve. It is also possible to form these washers bearing pins with which the sleeve directly in the machine frame is stored.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous refinements of the invention result from the subclaims.

Vorzugsweise handelt es sich bei dem Zylinderkern um einen auch ohne die Hülse einsetzbaren Druckzylinder. In diesem Fall kann der Druckzylinder auf eine minimale Drucklänge eingestellt werden, indem einfach die Hülse fortgelassen wird. Die Klischees können dann auf einem herkömmlichen Sleeve angeordnet sein, das auf den Druckzylinder aufgeschoben wird, sie können jedoch wahlweise auch direkt auf die Umfangsfläche des Zylinderkerns aufspannbar sein.The cylinder core is preferably also one without the Sleeve insertable pressure cylinder. In this case, the impression cylinder can be opened a minimum print length can be set by simply omitting the sleeve becomes. The clichés can then be arranged on a conventional sleeve be pushed onto the impression cylinder, but you can choose can also be clamped directly onto the circumferential surface of the cylinder core.

Weiterhin ist es möglich, die erreichbare Drucklänge dadurch noch weiter zu vergrößem, daß auf den Außenumfang der Hülse wiederum ein herkömmliches Sleeve aufgeschoben wird.It is also possible to further increase the print length that can be achieved enlarge that on the outer circumference of the sleeve in turn a conventional Sleeve is pushed on.

Bevorzugt weist der Zylinderkern in an sich bekannter Weise eine Druckluftleitung auf, von der radiale Durchbrüche zur Umfangsfläche führen. Bei Verwendung des Zylinderkerns ohne Hülse wird so das Aufschieben oder Abziehen eines herkömmlichen Sleeves erleichtert. Bei Verwendung mit Hülse besteht in diesem Fall die Möglichkeit, in dem Zwischenraum zwischen dem Zylinderkern und der Hülse einen Überdruck zu erzeugen. Durch radiale Durchbrüche in der Hülse kann dann auch das Aufschieben eines herkömmlichen Sleeves auf den Außenumfang der Hülse erleichtert werden. Im Bedarfsfall kann das Druckluftsystem auch dazu benutzt werden, die Hülse von innen vorzuspannen, um die Balligkeit der Hülse zu beeinflussen.The cylinder core preferably has a compressed air line in a manner known per se lead from the radial openings to the peripheral surface. Using of the cylinder core without a sleeve is the pushing or pulling one conventional sleeves easier. When used with a sleeve, in this case the possibility in the space between the cylinder core and to generate an overpressure of the sleeve. Through radial breakthroughs in the The sleeve can then also be pushed onto the conventional sleeve The outer circumference of the sleeve can be facilitated. If necessary, the compressed air system can also be used to preload the sleeve from the inside to the To influence the crown of the sleeve.

Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnung näher erläutert. The following are exemplary embodiments of the invention with reference to the drawing explained in more detail.

Es zeigen:

Fig. 1
einen Längsschnitt durch einen erfindungsgemäßen Druckzylinder; und
Fig. 2
einen Druckzylinder gemäß einem abgewandelten Ausführungsbeispiel.
Show it:
Fig. 1
a longitudinal section through an impression cylinder according to the invention; and
Fig. 2
a printing cylinder according to a modified embodiment.

Der in Fig. 1 gezeigte Druckzylinder weist einen Zylinderkern 10 auf, der vorzugsweise durch einen herkömmlichen Druckzylinder aus Stahl gebildet wird und an beiden Enden mit Achsstummeln 12 versehen ist, die eine Lagerung in einem nicht gezeigten Maschinengestell ermöglichen. Weiterhin weist der Zylinderkern 10, wie es an sich bei Druckzylindern bekannt ist, eine Axialbohrung 14 auf, über die Druckluft zugeführt werden kann, die dann über radiale Durchbrüche 16 zur Umfangsfläche 18 des Zylinderkerns austreten kann.The printing cylinder shown in Fig. 1 has a cylinder core 10, which is preferably is formed by a conventional steel pressure cylinder and is provided at both ends with stub axles 12, the storage in enable a machine frame, not shown. Furthermore, the cylinder core 10, as is known per se in the case of pressure cylinders, an axial bore 14 on which compressed air can be supplied, which then has radial openings 16 can emerge from the peripheral surface 18 of the cylinder core.

Der Zylinderkern 10 ist mit Abstand von einer zylindrischen Hülse 20 umgeben, die durch einen rohrförmigen Körper aus Kohlefaser-Verbundmaterial gebildet wird. Solche Rohrkörper aus Kohlefaser-Verbundmaterial und werden bisher beispielsweise als Bahnführungswalzen in Druckmaschinen oder gegebenenfalls auch als Druckzylinder für kleinere Drucklängen eingesetzt. Typischerweise haben diese Rohrkörper ein Gerüst aus diagonal gewickelten Kohlefasern, die in eine Matrix aus Kunststoff eingebettet sind.The cylinder core 10 is surrounded at a distance by a cylindrical sleeve 20, which is formed by a tubular body made of carbon fiber composite material becomes. Such tubular body made of carbon fiber composite material and so far for example as web guide rollers in printing machines or, if necessary also used as a printing cylinder for shorter printing lengths. Typically have this tubular body is a scaffold made of diagonally wound carbon fibers, which a matrix of plastic are embedded.

Die Hülse 20 ist an beiden Enden durch flache Scheiben 22 aus Stahl oder Aluminium abgeschlossen und stützt sich nur über diese Scheiben auf den Zylinderkern 10 ab. Die Scheiben 22 sind drehfest mit dem Zylinderkern 10 verbunden, wie in der Zeichnung durch Keile 24 symbolisiert wird. Entsprechend ist auch die Hülse 20 drehfest mit den Scheiben 22 verbunden, so daß der Zylinderkern 10 und die Hülse 20 zusammen einen starren, biege- und torsionssteifen Druckzylinder bilden. Nicht gezeigte Klischees können auf die äußere Umfangsfläche der Hülse 20 aufgespannt werden. Wahlweise kann auf die Hülse 20 jedoch auch ein konventionelles Sleeve aufgeschoben werden, das dann seinerseits die Klischees trägt. Zum leichteren Auswechseln eines solchen Sleeves weist auch die Hülse 20 Durchbrüche 26 auf, mit denen die aus den Durchbrüchen 16 des Zylinderkerns austretende Druckluft zur Umfangsfläche der Hülse weitergeleitet werden kann.The sleeve 20 is at both ends by flat washers 22 made of steel or aluminum completed and is supported only by these discs on the cylinder core 10 from. The disks 22 are non-rotatably connected to the cylinder core 10, as symbolized in the drawing by wedges 24. Is accordingly also the sleeve 20 rotatably connected to the disks 22, so that the cylinder core 10 and the sleeve 20 together a rigid, bending and torsional stiffness Form the pressure cylinder. Clichés, not shown, can be on the outer peripheral surface the sleeve 20 are clamped. Optionally, the sleeve 20 however, a conventional sleeve can also be pushed on, which in turn is then carries the clichés. For easier replacement of such a sleeve also has the sleeve 20 openings 26 with which those from the openings 16 of the cylinder core escaping compressed air to the peripheral surface of the sleeve can be forwarded.

Die Abmessungen des Druckzylinders können in einem weiten Bereich variieren. Durch Auswechseln der Hülse 20 einschließlich der zugehörigen Scheiben 22 läßt sich insbesondere der Außendurchmesser des Druckzylinders in einem weiten Bereich ändern. Aufgrund der verhältnismäßig geringen Wanddicke der Hülse 20 und des geringen spezifischen Gewichts dieser Hülse nimmt auch bei großen Außendurchmessem das Gesamtgewicht und das Trägheitsmoment des Druckzylinders nicht nennenswert zu.The dimensions of the impression cylinder can vary within a wide range. By replacing the sleeve 20 including the associated washers 22 In particular, the outer diameter of the impression cylinder can be expanded widely Change area. Due to the relatively small wall thickness of the sleeve 20 and the low specific weight of this sleeve also increases with large ones Outside diameter, the total weight and the moment of inertia of the Printing cylinder not significantly.

In einem typischen Ausführungsbeispiel beträgt die Arbeitsbreite des Druckzylinders etwa 800 bis 2000 mm, der Durchmesser des Zylinderkerns 10 beträgt etwa 10 mm, entsprechend einer minimalen Drucklänge in der Größenordnung von etwas über 30 mm, und der Außendurchmesser der Hülse 20 beträgt beispielsweise bis zu 400 mm. Die Wanddicke der Hülse 20 liegt in der Größenordnung von etwa 15 bis 20 mm. Aufgrund des kohlefaserverstärkten Materials ist diese Wanddicke ausreichend, die erforderliche Eigensteifheit der Hülse 20 zu gewährleisten. Die beim Drucken auf die Außenfläche der Hülse einwirkenden Radialkräfte werden in die beiden Scheiben 22 eingeleitet, ohne daß sich die Hülse 20 dabei nennenswert verformt. Da die Krafteinleitung in den Zylinderkern 10 in der Nähe der Achsstummel 12 erfolgt, wird auch eine Durchbildung des Zylinderkerns 10 weitgehend vermieden. Darüber hinaus wird die Biegesteifheit des Druckzylinders insgesamt durch den schalenförmigen Aufbau erhöht.In a typical embodiment, the working width of the impression cylinder is about 800 to 2000 mm, the diameter of the cylinder core 10 about 10 mm, corresponding to a minimum print length of the order of magnitude of just over 30 mm, and the outer diameter of the sleeve 20 is, for example up to 400 mm. The wall thickness of the sleeve 20 is of the order of magnitude from about 15 to 20 mm. Because of the carbon fiber reinforced material this wall thickness sufficient to the required inherent rigidity of the sleeve 20 guarantee. Those that act on the outer surface of the sleeve when printing Radial forces are introduced into the two disks 22 without the Sleeve 20 deformed significantly. Because the force transmission in the cylinder core 10 in the vicinity of the stub axle 12 is also a training of the cylinder core 10 largely avoided. In addition, the bending stiffness of the printing cylinder increased overall by the shell-shaped structure.

Während in Fig. 1 die Scheiben 22 bündig mit den Enden der Hülse 20 abschließen, zeigt Fig. 2 ein Ausführungsbeispiel, bei dem die Scheiben 22 gegenüber der Hülse etwas nach innen eingerückt sind. Durch eine solche eingerückte Anordnung der Scheiben 22 wird eine bessere Verteilung der Abstützkräfte auf der Länge der Hülse 20 und damit eine wesentliche Verringerung der beim Drucken auf die Hülse 20 wirkenden Biegemomente erreicht. Zwar sind in diesem Fall die auf den Zylinderkern 10 wirkenden Biegemomente etwas erhöht, doch heben sich diese Effekte nicht gegenseitig auf, sondern im Endergebnis wird eine höhere Biegesteifheit des Druckzylinders erreicht.1, the disks 22 are flush with the ends of the sleeve 20, 2 shows an embodiment in which the disks 22 face each other the sleeve are slightly indented. By such an indented arrangement the discs 22 will have a better distribution of the support forces on the Length of the sleeve 20 and thus a significant reduction in printing reached bending moments acting on the sleeve 20. In this case they are bending moments acting on the cylinder core 10 slightly increased, but lift these effects do not affect each other, but the end result will be higher Bending rigidity of the impression cylinder reached.

Claims (5)

Druckzylinder mit einem Zylinderkern (10), auf dem eine kohlefaserhaltige Hülse (20) angeordnet ist, dadurch gekennzeichnet, daß die Hülse (20) selbsttragend und durch im Bereich beider Enden angeordnete Scheiben (22) auf Abstand zur Umfangsfläche (18) des Zylinderkerns (10) gehalten ist.Printing cylinder with a cylinder core (10) on which a carbon fiber-containing sleeve (20) is arranged, characterized in that the sleeve (20) is self-supporting and is spaced from the circumferential surface (18) of the cylinder core (by discs (22) arranged in the region of both ends 10) is held. Druckzylinder nach Anspruch 1, dadurch gekennzeichnet, daß der Zylinderkern (10) für die Verwendung als Druckzylinder unabhängig von der Hülse (20) ausgebildet ist.Printing cylinder according to claim 1, characterized in that the cylinder core (10) for use as an impression cylinder regardless of the sleeve (20) is formed. Druckzylinder nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Zylinderkern (10) einen axialen Kanal (14) zur Zufuhr von Druckluft aufweist, der über radiale Durchbrüche (16) mit der Umfangsfläche des Zylinderkerns verbunden ist, und daß auch die Hülse (20) radiale Durchbrüche (26) aufweist.Printing cylinder according to claim 1 or 2, characterized in that the cylinder core (10) has an axial channel (14) for supplying compressed air which is connected to the peripheral surface of the cylinder core via radial openings (16), and in that the sleeve (20 ) has radial openings (26). Druckkzylinder nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das kohlefaserhaltige Material der Hülse (20) ein Kohlefaser-Verbundmaterial mit einem gewickelten Gerüst aus Kohlefasern ist.Printing cylinder according to one of the preceding claims, characterized in that the carbon fiber-containing material of the sleeve (20) is a carbon fiber composite material with a wound structure made of carbon fibers. Druckzylinder nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Scheiben (22) gegenüber den axialen Enden der Hülse (20) nach innen eingerückt sind.Printing cylinder according to one of the preceding claims, characterized in that the disks (22) are indented towards the axial ends of the sleeve (20).
EP99102033A 1999-02-01 1999-02-01 Plate cylinder Revoked EP1025996B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES99102033T ES2166201T3 (en) 1999-02-01 1999-02-01 HOLDER CYLINDER.
DE59900456T DE59900456D1 (en) 1999-02-01 1999-02-01 Plate cylinder
EP99102033A EP1025996B1 (en) 1999-02-01 1999-02-01 Plate cylinder
US09/489,729 US6523470B2 (en) 1999-02-01 2000-01-21 Printing cylinder
JP2000023069A JP2000225681A (en) 1999-02-01 2000-01-31 Printing cylinder

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EP99102033A EP1025996B1 (en) 1999-02-01 1999-02-01 Plate cylinder

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EP1025996A1 true EP1025996A1 (en) 2000-08-09
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DE20012929U1 (en) 2000-07-25 2000-11-23 Polywest Kunststofftechnik Saueressig & Partner GmbH & Co. KG, 48683 Ahaus Adapter sleeve, especially for printing machines
WO2005030488A1 (en) 2003-09-25 2005-04-07 Inometa Technologie Gmbh & Co. Support cylinder for a removable printing sleeve
EP1543962A1 (en) 2003-12-19 2005-06-22 FISCHER & KRECKE GMBH & CO. Gravure cylinder
WO2005067364A2 (en) * 2004-01-15 2005-07-28 Windmöller & Hölscher Kg Printing cylinder with a plastic sleeve containing carbon fibers
WO2005090075A3 (en) * 2004-03-18 2005-11-24 Polywest Kunststofftechnik Covering for printing machines
EP1808293A1 (en) 2006-01-13 2007-07-18 Fischer & Krecke GmbH & Co. KG Printing cylinder for flexography
NL1033483C2 (en) * 2007-03-02 2008-09-03 Drent Holding B V Printing cylinder for offset printing machine, has several cups each having conical surface which partially bears against adjacent cup to form connection between the cups
WO2008108631A1 (en) * 2007-03-02 2008-09-12 Drent Holding B.V. Printing cylinder or printing sleeve, cup and method for producing a printing cylinder or printing sleeve
EP2202084A1 (en) * 2008-12-22 2010-06-30 Müller Martini Holding AG Roller for a printer, printer with the roller and method for producing the roller
EP1221367B2 (en) † 2001-01-04 2010-09-08 Fischer & Krecke Gmbh & Co. Method for changing a printing cylinder sleeve and printing machine for carrying out the method
DE102009055767A1 (en) 2009-11-25 2011-06-01 Fischer & Krecke Gmbh Printing cylinder arrangement for a rotary printing machine
BE1020873A3 (en) * 2013-04-08 2014-06-03 Hannecard Nv ROLLER, ROLLER CORE AND ROLLER COVER FOR INDUSTRIAL COATING OF FLAT OR CURVED METAL SURFACES.
WO2019172769A1 (en) * 2018-03-09 2019-09-12 Apex Europe B.V. An apparatus for flexographic printing and a method of forming the apparatus

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US6799511B2 (en) * 2002-12-03 2004-10-05 Day International, Inc. Gapless compressible cylinder assembly
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DK1500500T3 (en) * 2003-07-03 2005-12-27 Fischer & Krecke Gmbh & Co Printing machine
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ITMI20082225A1 (en) * 2008-12-16 2010-06-17 Rossini S P A ADAPTER SLEEVE FOR HIGH RIGIDITY PRINTING CYLINDERS
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JP6514537B2 (en) * 2015-03-24 2019-05-15 昭和アルミニウム缶株式会社 Printing cylinder
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Publication number Priority date Publication date Assignee Title
DE20012929U1 (en) 2000-07-25 2000-11-23 Polywest Kunststofftechnik Saueressig & Partner GmbH & Co. KG, 48683 Ahaus Adapter sleeve, especially for printing machines
EP1221367B2 (en) † 2001-01-04 2010-09-08 Fischer & Krecke Gmbh & Co. Method for changing a printing cylinder sleeve and printing machine for carrying out the method
WO2005030488A1 (en) 2003-09-25 2005-04-07 Inometa Technologie Gmbh & Co. Support cylinder for a removable printing sleeve
DE10344408B3 (en) * 2003-09-25 2005-05-12 Inometa Technologie Gmbh & Co. Support cylinder for a replaceable pressure sleeve
EP1543962A1 (en) 2003-12-19 2005-06-22 FISCHER & KRECKE GMBH & CO. Gravure cylinder
WO2005067364A2 (en) * 2004-01-15 2005-07-28 Windmöller & Hölscher Kg Printing cylinder with a plastic sleeve containing carbon fibers
WO2005067364A3 (en) * 2004-01-15 2006-10-05 Windmoeller & Hoelscher Printing cylinder with a plastic sleeve containing carbon fibers
WO2005090075A3 (en) * 2004-03-18 2005-11-24 Polywest Kunststofftechnik Covering for printing machines
EP1808293A1 (en) 2006-01-13 2007-07-18 Fischer & Krecke GmbH & Co. KG Printing cylinder for flexography
WO2008108631A1 (en) * 2007-03-02 2008-09-12 Drent Holding B.V. Printing cylinder or printing sleeve, cup and method for producing a printing cylinder or printing sleeve
NL1033483C2 (en) * 2007-03-02 2008-09-03 Drent Holding B V Printing cylinder for offset printing machine, has several cups each having conical surface which partially bears against adjacent cup to form connection between the cups
US8312810B2 (en) 2007-03-02 2012-11-20 Mueller Martini Druckmaschinen Gmbh Printing cylinder or printing sleeve, cup and method for producing a printing cylinder or printing sleeve
EP2202084A1 (en) * 2008-12-22 2010-06-30 Müller Martini Holding AG Roller for a printer, printer with the roller and method for producing the roller
CN101791895A (en) * 2008-12-22 2010-08-04 米勒·马蒂尼控股公司 Roller for a printer, printer with the roller and method for producing the roller
DE102009055767A1 (en) 2009-11-25 2011-06-01 Fischer & Krecke Gmbh Printing cylinder arrangement for a rotary printing machine
WO2011064129A1 (en) * 2009-11-25 2011-06-03 Fischer & Krecke Gmbh Printing cylinder arrangement for a rotary printing machine
BE1020873A3 (en) * 2013-04-08 2014-06-03 Hannecard Nv ROLLER, ROLLER CORE AND ROLLER COVER FOR INDUSTRIAL COATING OF FLAT OR CURVED METAL SURFACES.
WO2019172769A1 (en) * 2018-03-09 2019-09-12 Apex Europe B.V. An apparatus for flexographic printing and a method of forming the apparatus
NL2020561B1 (en) * 2018-03-09 2019-09-13 Apex Europe B V An Apparatus for Flexographic Printing and A Method of Forming and Operating the Apparatus

Also Published As

Publication number Publication date
US20020056387A1 (en) 2002-05-16
EP1025996B1 (en) 2001-11-28
ES2166201T3 (en) 2002-04-01
US6523470B2 (en) 2003-02-25
DE59900456D1 (en) 2002-01-10
JP2000225681A (en) 2000-08-15

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