EP1534521B1 - Clamping device for a printing plate - Google Patents

Clamping device for a printing plate Download PDF

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Publication number
EP1534521B1
EP1534521B1 EP03750293A EP03750293A EP1534521B1 EP 1534521 B1 EP1534521 B1 EP 1534521B1 EP 03750293 A EP03750293 A EP 03750293A EP 03750293 A EP03750293 A EP 03750293A EP 1534521 B1 EP1534521 B1 EP 1534521B1
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EP
European Patent Office
Prior art keywords
clamping
clamping device
spindle
plate
cylinder
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.)
Expired - Lifetime
Application number
EP03750293A
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German (de)
French (fr)
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EP1534521A1 (en
Inventor
Günther Josef HOIER
Johannes Georg Schaede
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.)
KBA Notasys SA
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KBA Giori SA
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Publication date
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Publication of EP1534521A1 publication Critical patent/EP1534521A1/en
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    • 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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1231—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially tangential to support surface

Definitions

  • the invention relates to a clamping device for a printing plate on a cylinder according to the preamble of claim 1.
  • the invention relates to a cylinder with a clamping device for fastening a plate, in particular a pressure plate, on the circumference of the cylinder, wherein the clamping device comprises a first clamping element, a pivotally mounted second clamping element, a spring member and a clamping element, which between a clamping position, in the it holds the pressure plate clamped between the clamping elements, and a released position is movable, in which the clamping elements release the pressure plate.
  • the clamping device comprises a first clamping element, a pivotally mounted second clamping element, a spring member and a clamping element, which between a clamping position, in the it holds the pressure plate clamped between the clamping elements, and a released position is movable, in which the clamping elements release the pressure plate.
  • a clamping device for fastening a printing plate on a printing cylinder is z. B. from the DE 690 20 463 T2 known.
  • the clamping device consists of a clamp W for an upper edge of the pressure plate and a clamp S for a lower edge of the pressure plate. Both terminals W and S each comprise two terminal strips, between which the corresponding edge of the pressure plate is clamped. For the necessary clamping force each ensures a clamping spindle which is rotatably mounted between the terminal strips.
  • the clamping spindle has a substantially circular cross-section except for a flattening.
  • a differently configured clamping device is shown in the EP 04 35 410 B2 . Also in this clamping device, an edge of the pressure plate is clamped between two terminal strips. One of the terminal strips is pivotally mounted and is pressed by a spring against the other terminal block. To open the two terminal strips, a spindle is provided with eccentric cross section, with which the pressure of the spring can be counteracted. Although in this device at different thicknesses of the pressure plate, the spring is pressed different degrees, resulting in a correspondingly changed spring force and thus a changed clamping force for the pressure plate. However, this clamping force is weak on the one hand, because the spring can cause only small spring forces, whereby printing plates can not be maintained with an oversized thickness in this clamp.
  • the pressure plate is constantly endeavoring to bend back so that, while the spindle locking device is released, it must be held between the clamping bars to allow the clamping bars to grip the pressure plate. In this case, there is the danger for a person holding the printing plate that their fingers are trapped between the clamping strips. If the pressure plate is mounted by only one person, the risk of injury increases considerably, because they must hold the pressure plate with one hand while the other hand at the same time must operate the detection device for the spindle.
  • the DE 26 06 773 B2 discloses a device for mounting a printing plate on a cylinder, in which the printing plates are held between fixed clamping strips and movable clamping elements.
  • the clamping elements are moved via a pivotable, flattened spindle by means of interposed disc springs.
  • the invention has for its object to provide a clamping device for a printing plate.
  • the advantages achieved by the invention are, in particular, that printing plates with different thicknesses can be attached to the cylinder.
  • the special design of the clamping device ensures that each pressure plate experiences a clamping force corresponding to its thickness from the clamping device and is gripped securely by the clamping elements.
  • the play of the clamping element between the clamping elements in the released position prevents unintentional snapping the clamping elements and thereby reduces the risk of injury.
  • the mounting of the pressure plate is considerably simplified, since it can be initially introduced as a precaution between the clamping elements and is held by these before moving by moving the clamping element in the Clamping position is acted upon by a clamping force.
  • the spring part comprises at least one plate spring.
  • Disc springs have in contrast to tension springs a much larger spring constant in a compact design and are therefore able to exercise at a lower compression a much larger spring force. This allows a more compact and space-saving design of the clamping device, which is also able to hold pressure plates with a thickness at which a running with springs springs clamping device could not provide the necessary clamping force.
  • the clamping device is arranged in an elongated groove in the cylinder.
  • the cylinder z. B. can be used as a plate cylinder in a rotary printing press without the clamping device hinders the printing process.
  • a clamping device which is displaceable within the groove.
  • the pressure plate held by the clamping device can be clamped by displacing the clamping device in the circumferential direction within the groove, so that the pressure plate rests tightly on the circumference of the cylinder, or move as a whole in the circumferential direction.
  • the clamping device can also be displaceable along the groove. In a machine having a plurality of plate cylinders for multi-color printing, the individual plates can be adjusted passerhaltig using such clamps.
  • At least one of the clamping elements is preferably a bar running parallel to the groove. With such strips, a pressure plate can be clamped along a whole length of one of its end portions, whereby the clamping is improved.
  • one side of the first clamping element, with which the first clamping element clamps the pressure plate, in the cross-section transverse to the axis of the cylinder has a curved course.
  • circular arc or ellipse or any other portion may be arbitrarily curved.
  • Such an embodiment of the first clamping element favors a kink-free clamping of the printing plate.
  • a clamping element which is a parallel to the groove extending spindle.
  • a clamping force can be applied along an entire length of the clamping elements by means of a clamping element designed in this way, which favors secure clamping of the pressure plate.
  • the spindle has a substantially circular segment-shaped cross section with a first flattening.
  • a spindle can be brought by simply turning from the clamping position to the released position and vice versa.
  • the flattening in the released position is directed substantially against one of the two terminal strips, resulting in the game of the spindle in the space between the terminal strips.
  • a further embodiment of the spindle has a second flattening and a third flattening, which are arranged diametrically opposite each other on the spindle, wherein pressed in the clamping position, the second flattening against the second clamping element and the third flattening is pressed by the spring member. The second and the third flattening causes the spindle to engage in the clamping position.
  • pins are present in one of the clamping elements, on which the pressure plate is hooked. Thanks to the pins assembly of the pressure plate is further simplified because it is prevented from slipping out between the two clamping elements.
  • the cylinder is particularly preferably part of a rotary printing machine.
  • Fig. 1 shows a cross section through a portion of a cylinder 01 with an associated clamping device 02.
  • the clamping device 02 is disposed within a longitudinal groove 11 in the cylinder 01 and completely received in this groove 11.
  • a plate 03, z. B. pressure plate 03 which is bent with an end portion and clamped in the clamping device 02.
  • the clamping device 02 includes a first clamping element 04, a second clamping element 06, a bearing block 17 with a spring part 07 and a clamping element 08.
  • the first clamping element 04 is an extending through the length of the groove 11 L-profile strip 04.
  • pins 16 are arranged, which protrude with one end portion of the end of the leg 18 and positively engage through holes on the edge of the pressure plate 03.
  • horizontal leg 19 of the L-shaped strip 04 is provided on the side of the leg 18 a recess 21 in a leg 18 opposite end portion of the leg 19.
  • the L-profile strip 04 is disposed within the groove 11 such that the leg 18 to an opening 22nd the groove 11 is aligned in the surface of the cylinder 01 out and the leg 19 points away from the opening 22.
  • the bearing block 17 rests on the horizontal leg 19 of the L-profile strip 04 and on the vertical leg 18 at.
  • On a vertical leg 18 facing the end portion of the bearing block 17 has a pivot bearing 23.
  • the bearing block 17 has a channel-shaped groove 24 extending parallel to the groove 11.
  • the second clamping element 06 is articulated, while the groove 24 serves as a bearing 24 for the clamping element 08.
  • an opening 26 is provided as engagement for the spring part 07.
  • the second clamping element 06 extends through the length of the groove 11 and is pivoted on the pivot bearing 23 about a longitudinal axis.
  • the clamping member 06 acts as a two-armed lever.
  • a breakthrough 22 facing lever arm forms a terminal block 06 which rests on the vertical leg 18 of the L-profile strip 04.
  • the terminal block 06 has holes 27 into which protrude from the leg 18 projecting pin 16.
  • the clamping element 08 is a spindle 08, which extends through the length of the groove 11.
  • the spindle 08 has a substantially circular-segment-shaped cross-section with a broad first flattening 12.
  • two further flattenings 13 and 14 are provided diametrically opposite one another, which are arranged parallel to one another and both perpendicular to the flattening 12.
  • the flattenings 13 and 14 are much narrower than the flattening 12.
  • the spindle 08 extends over the entire length of the bearing block 17 and is rotatably mounted in the groove 24.
  • the distance of the flattenings 13, 14 from the axis of rotation of the spindle 08 corresponds to the radius of curvature of the circular segment-shaped part of the cross section; the distance of the flattening 12 from the axis of rotation is smaller.
  • the spring member 07 includes a plurality of springs 09, z. B. disc springs 09, on which a plate 28 is mounted.
  • the plate 28 has on a side facing away from the plate springs 09 via a projection 29.
  • the plate springs 09 and the plate 28 are received by the recess 21 of the horizontal leg 19 of the L-profile strip 04.
  • the projection 29 engages through the opening 26 of the bearing block 17 into the interior of the bearing 24 and presses against the spindle located therein 08th
  • the spindle 08 If the spindle 08 is in a released position, it is directed with the first flattening 12 either against a side facing away from the opening 22 lever arm of the terminal block 06 or against the projection 29 of the spring member 07. It then points a game within the warehouse 24, d. H. in a space between the spring member 07 and the projection 29 of the spring member 07 and the terminal block 06.
  • the plate springs 09 press the plate 28 against the bearing block 17.
  • the terminal strip 06 is freely pivotable about the pivot bearing 23 and can be pivoted back to release the pin 16.
  • a perforated edge portion of the pressure plate 03 is first pushed through the opening 22 of the groove 11 in the circumference of the cylinder 01 and hooked by means of the holes on the pin 16. Subsequently, the pressure plate 03 is bent around the cylinder 01 and an opposite edge portion hooked in a second groove 11 in the same way.
  • the leg 18 of the L-profile strip 04 in a section transverse to an axis of the cylinder 01 has a curved course, as in the Fig. 2 is shown.
  • the curvature in the illustrated embodiment of the L-profile strip 04 has the shape of a circular section.
  • the spindle 08 in the in the Fig. 1 twisted shown clamping position. In this position presses it with its second flattening 13 against the terminal block 06 and the third flattening 14 against the projection 29 of the spring member 07. To take this position an additional, easily applied force is necessary, so that the spindle 08 thanks to the flattening 13 and 14 in the clamping position is locked. About the projection 29, the plate springs 09 are compressed by the spindle 08. They react to this with a spring force which acts on the projection 08 on the spindle 08 and on the second clamping element 06. Since the second clamping member 06 acts as a result of its pivotal mounting on the pivot bearing 23 as a two-armed lever, the pressure plate 03 between the terminal block 06 of the second clamping member 06 and the leg 18 of the L-profile strip 04 is clamped.
  • the plate springs 09 are either more or less compressed and react with a correspondingly different spring force, d. H. the clamping force for the pressure plate 03 increases with the thickness of the pressure plate 03, because the disc springs 08 are more compressed with increasing thickness of the pressure plate 03.
  • a clamping force corresponding to the thickness of the pressure plate 03 automatically adjusts itself.
  • the clamping device 02 is displaced away within the groove 11 from the opening 22 to tension the pressure plate 03 on the circumference of the cylinder 01.
  • a clamping screw 31 is provided, which abuts against a wall of the groove 11 and with which the clamping device 02 within the groove 11 for breakthrough 22 toward or away from the opening 22 can be moved away.
  • the pressure plate 03 is removed from the cylinder 01 by the spindle 08 is rotated back into the released position in which it has a clearance in the space between the spring member 07 and the second clamping member 06, so that the second Clamping element 06 is free to pivot again. Now, the terminal block 06 of the second clamping member 06 can be easily swung back, whereby the pin 16 are exposed and the pressure plate 03 can be enthakt of the pin 16.
  • the invention is not limited to the embodiment described. Rather, alternative embodiments of the clamping device 02 shown are possible without departing from the inventive concept. So it is in the described embodiment of the clamping device 02 at the first clamping element 04 and the L-profile strip 04 to a over the entire length of the groove 11 extending bar, wherein the second clamping element 06 is designed as a continuous bar.
  • the second clamping member 06 may consist of several clamping levers, which are hinged to a plurality of bearing blocks 17.
  • the first clamping element 04 may consist of several L-profile pieces 04, on which the bearing blocks 17 rest, instead of being formed as a continuous L-profile strip 04.
  • the first clamping element 04 and the second clamping element 06 may be integrally formed in any combination as strips or consist of several pieces.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

Clamping device (02) for fixing a plate (03) on the periphery of a cylinder (01) comprises a first clamping element (04), a pivotably mounted second clamping element (06), a spring part (07), and a tension element (08) designed as a pivoting spindle which is moved between a clamping position in which the plate is clamped between the clamping elements and a release position in which the clamping elements release the plate. The spindle is movably mounted in a groove (24). The spindle is attached in an intermediate space between the spring part and the second clamping element and in the clamping position is pressed by the spring part against the second clamping element and in the release position there is play between the clamping elements. Preferred Features: The cylinder is arranged in a rotary printing machine. The spring part comprises at least one disk spring (09).

Description

Die Erfindung betrifft eine Klemmvorrichtung für eine Druckplatte auf einem Zylinder gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a clamping device for a printing plate on a cylinder according to the preamble of claim 1.

Gegenstand der Erfindung ist ein Zylinder mit einer Klemmvorrichtung zur Befestigung einer Platte, insbesondere einer Druckplatte, am Umfang des Zylinders, wobei die Klemmvorrichtung ein erstes Klemmelement, ein schwenkbar gelagertes zweites Klemmelement, ein Federteil und ein Spannelement umfasst, welches zwischen einer Klemmposition, in der es die Druckplatte zwischen den Klemmelementen eingeklemmt hält, und einer gelösten Position bewegbar ist, in der die Klemmelemente die Druckplatte freigeben. Mit dem beispielsweise in einer Rotationsdruckmaschine eingebauten Zylinder lassen sich Druckplatten mit unterschiedlichen Dicken, wie sie z. B. beim sog. Lettersetverfahren auftreten, am Umfang des Zylinders befestigen.The invention relates to a cylinder with a clamping device for fastening a plate, in particular a pressure plate, on the circumference of the cylinder, wherein the clamping device comprises a first clamping element, a pivotally mounted second clamping element, a spring member and a clamping element, which between a clamping position, in the it holds the pressure plate clamped between the clamping elements, and a released position is movable, in which the clamping elements release the pressure plate. With the built-in, for example, in a rotary cylinder cylinder pressure plates with different thicknesses, as z. B. occur in the so-called. Lettersetverfahren, fasten on the circumference of the cylinder.

Eine Klemmvorrichtung zur Befestigung einer Druckplatte auf einem Druckzylinder ist z. B. aus der DE 690 20 463 T2 bekannt. Die Klemmvorrichtung besteht aus einer Klemme W für einen oberen Rand der Druckplatte und einer Klemme S für einen unteren Rand der Druckplatte. Beide Klemmen W und S umfassen jeweils zwei Klemmleisten, zwischen denen der entsprechende Rand der Druckplatte eingeklemmt wird. Für die nötige Klemmkraft sorgt jeweils eine Spannspindel, die zwischen den Klemmleisten drehbar gelagert ist. Die Spannspindel hat einen bis auf eine Abplattung im wesentlichen kreisförmigen Querschnitt. Sie kann in eine Position gedreht werden, in der sie mit einem größten Durchmesser gegen die beiden Klemmleisten drückt und die Druckplatte dabei zwischen ihnen einklemmt, oder aber in eine Position verdreht werden, in der sie aufgrund einer durch die Abplattung verkürzten Breite keine Klemmkraft mehr auf die Klemmleisten ausüben kann und die Druckplatte freigegeben wird. Mit der gezeigten Ausführung ist es aber nicht möglich, zur Befestigung von Druckplatten mit unterschiedlichen Dicken die Klemmkraft optimal auf eine bestimmte Dicke der Druckplatte einzustellen. So werden Druckplatten mit geringerer Dicke in einem Spalt zwischen den Klemmleisten nicht fest genug bzw. überhaupt nicht eingeklemmt, während Druckplatten mit größerer Dicke unter Umständen erst gar nicht in den Spalt zwischen den Klemmleisten eingeführt werden können.A clamping device for fastening a printing plate on a printing cylinder is z. B. from the DE 690 20 463 T2 known. The clamping device consists of a clamp W for an upper edge of the pressure plate and a clamp S for a lower edge of the pressure plate. Both terminals W and S each comprise two terminal strips, between which the corresponding edge of the pressure plate is clamped. For the necessary clamping force each ensures a clamping spindle which is rotatably mounted between the terminal strips. The clamping spindle has a substantially circular cross-section except for a flattening. It can be rotated to a position in which it presses with a largest diameter against the two terminal strips and thereby clamps the pressure plate between them, or be twisted into a position in which they no longer clamping force due to a shortened by the flattening width can exert the terminal strips and the pressure plate is released. It is with the shown embodiment but not possible to adjust the clamping force optimally to a certain thickness of the printing plate for mounting pressure plates with different thicknesses. Thus, printing plates with a smaller thickness in a gap between the terminal strips are not strong enough or not clamped at all, while printing plates with a larger thickness under certain circumstances can not be inserted into the gap between the terminal strips.

In der EP 04 35 410 B2 ist eine anders ausgestaltete Klemmvorrichtung gezeigt. Auch bei dieser Klemmvorrichtung wird ein Rand der Druckplatte zwischen zwei Klemmleisten eingeklemmt. Eine der Klemmleisten ist schwenkbar gelagert und wird von einer Sprungfeder gegen die andere Klemmleiste gedrückt. Zum Öffnen der beiden Klemmleisten ist eine Spindel mit exzentrischem Querschnitt vorgesehen, mit der dem Druck der Sprungfeder entgegengewirkt werden kann. Zwar wird bei dieser Vorrichtung bei unterschiedlichen Dicken der Druckplatte die Sprungfeder unterschiedlich stark eingedrückt, was zu einer entsprechend geänderten Federkraft und damit einer geänderten Klemmkraft für die Druckplatte führt. Jedoch ist diese Klemmkraft zum einen schwach, weil die Sprungfeder nur kleine Federkräfte bewirken kann, wodurch Druckplatten mit einer allzu großen Dicke in dieser Klemmvorrichtung nicht gehalten werden können. Zum anderen muss während dem Einsetzen der Druckplatte zwischen die Klemmleisten dafür gesorgt sein, dass die Spindel dauerhaft gegen die Federkraft wirkt. Dies erfordert einen Feststellmechanismus für die Spindel, was einen erhöhten mechanischen Aufwand bedeutet, weil ohne einen solchen Feststellmechanismus die Gefahr besteht, dass während des Einsetzens der Druckplatte die Spindel verrutscht und die schwenkbare Klemmleiste wieder freigibt, die dann aufgrund der Federkraft sofort gegen die andere Klemmleiste gedrückt wird. Doch selbst mit einer solchen Feststellvorrichtung für die Spindel ist das Einsetzen der Druckplatte mühsam und mit einer Verletzungsgefahr verbunden, da die Druckplatte insbesondere dann, wenn sie eine große Dicke hat, über eine gewisse Steifigkeit verfügt, die beim Umbiegen der Druckplatte und ihrem Einbringen zwischen die beiden Klemmleisten überwunden werden muss.In the EP 04 35 410 B2 a differently configured clamping device is shown. Also in this clamping device, an edge of the pressure plate is clamped between two terminal strips. One of the terminal strips is pivotally mounted and is pressed by a spring against the other terminal block. To open the two terminal strips, a spindle is provided with eccentric cross section, with which the pressure of the spring can be counteracted. Although in this device at different thicknesses of the pressure plate, the spring is pressed different degrees, resulting in a correspondingly changed spring force and thus a changed clamping force for the pressure plate. However, this clamping force is weak on the one hand, because the spring can cause only small spring forces, whereby printing plates can not be maintained with an oversized thickness in this clamp. On the other hand, care must be taken during the insertion of the pressure plate between the terminal strips that the spindle permanently against the spring force acts. This requires a locking mechanism for the spindle, which means an increased mechanical effort, because without such a locking mechanism there is a risk that during insertion of the pressure plate, the spindle slips and releases the pivotal terminal block again, then due to the spring force immediately against the other terminal block is pressed. However, even with such a locking device for the spindle, the insertion of the pressure plate is cumbersome and associated with a risk of injury, since the pressure plate, in particular, if it has a large thickness, has a certain rigidity when bending the pressure plate and their introduction between the Both terminal strips must be overcome.

Infolge dieser Steifigkeit ist die Druckplatte beständig bestrebt, sich wieder zurückzubiegen, so dass sie, während die Feststellvorrichtung für die Spindel gelöst ist, zwischen den Klemmleisten gehalten werden muss, damit die Klemmleisten die Druckplatte zu fassen bekommen. Dabei besteht für eine die Druckplatte haltende Person die Gefahr, dass ihre Finger zwischen den Klemmleisten eingeklemmt werden. Sofern die Druckplatte nur von einer Person montiert wird, erhöht sich die Verletzungsgefahr erheblich, weil sie mit einer Hand die Druckplatte halten muss, während sie mit der anderen Hand gleichzeitig die Feststellungsvorrichtung für die Spindel betätigen muss.As a result of this rigidity, the pressure plate is constantly endeavoring to bend back so that, while the spindle locking device is released, it must be held between the clamping bars to allow the clamping bars to grip the pressure plate. In this case, there is the danger for a person holding the printing plate that their fingers are trapped between the clamping strips. If the pressure plate is mounted by only one person, the risk of injury increases considerably, because they must hold the pressure plate with one hand while the other hand at the same time must operate the detection device for the spindle.

Die DE 26 06 773 B2 offenbart eine Vorrichtung zum Befestigen einer Druckplatte auf einem Zylinder, bei der die Druckplatten zwischen festen Klemmleisten und beweglichen Klemmelementen gehalten werden. Die Klemmelemente werden über eine schwenkbare, abgeflachte Spindel mittels zwischengeschalteter Tellerfedern bewegt.The DE 26 06 773 B2 discloses a device for mounting a printing plate on a cylinder, in which the printing plates are held between fixed clamping strips and movable clamping elements. The clamping elements are moved via a pivotable, flattened spindle by means of interposed disc springs.

Der Erfindung liegt die Aufgabe zugrunde, eine Klemmvorrichtung für eine Druckplatte zu schaffen.The invention has for its object to provide a clamping device for a printing plate.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The object is achieved by the features of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass Druckplatten mit unterschiedlichen Dicken an dem Zylinder befestigt werden können. Durch die besondere Ausführung der Klemmvorrichtung ist dabei gewährleistet, dass jede Druckplatte von der Klemmvorrichtung eine ihrer Dicke entsprechende Klemmkraft erfährt und von den Klemmelementen sicher gegriffen wird. Ferner verhindert das Spiel des Spannelementes zwischen den Klemmelementen in der gelösten Position ein unbeabsichtigtes Zuschnappen der Klemmelemente und vermindert dadurch die Verletzungsgefahr. Auch wird die Montage der Druckplatte erheblich vereinfacht, da sie zunächst vorsorglich zwischen die Klemmelemente eingebracht werden kann und von diesen gehalten wird, bevor sie durch Bewegen des Spannelementes in die Klemmposition mit einer Klemmkraft beaufschlagt wird.The advantages achieved by the invention are, in particular, that printing plates with different thicknesses can be attached to the cylinder. The special design of the clamping device ensures that each pressure plate experiences a clamping force corresponding to its thickness from the clamping device and is gripped securely by the clamping elements. Furthermore, the play of the clamping element between the clamping elements in the released position prevents unintentional snapping the clamping elements and thereby reduces the risk of injury. Also, the mounting of the pressure plate is considerably simplified, since it can be initially introduced as a precaution between the clamping elements and is held by these before moving by moving the clamping element in the Clamping position is acted upon by a clamping force.

Vorzugsweise umfasst das Federteil wenigstens eine Tellerfeder. Tellerfedern haben im Gegensatz zu Spannfedern eine erheblich größere Federkonstante bei kompakter Bauform und sind daher in der Lage, bei geringerer Stauchung eine viel größere Federkraft auszuüben. Dies ermöglicht eine kompaktere und platzsparendere Ausführung der Klemmvorrichtung, die zudem in der Lage ist, Druckplatten mit einer Dicke zu halten, bei denen eine mit Sprungfedern ausgeführte Klemmvorrichtung die dafür notwendige Klemmkraft nicht liefern könnte.Preferably, the spring part comprises at least one plate spring. Disc springs have in contrast to tension springs a much larger spring constant in a compact design and are therefore able to exercise at a lower compression a much larger spring force. This allows a more compact and space-saving design of the clamping device, which is also able to hold pressure plates with a thickness at which a running with springs springs clamping device could not provide the necessary clamping force.

Vorzugsweise ist die Klemmvorrichtung in einer länglichen Nut im Zylinder angeordnet. Indem die Klemmvorrichtung gänzlich in der Nut versenkt wird, kann der Zylinder z. B. als Plattenzylinder in einer Rotationsdruckmaschine eingesetzt werden, ohne dass die Klemmvorrichtung den Druckvorgang behindert.Preferably, the clamping device is arranged in an elongated groove in the cylinder. By the clamping device is completely sunk in the groove, the cylinder z. B. can be used as a plate cylinder in a rotary printing press without the clamping device hinders the printing process.

Besonders bevorzugt ist dabei eine Klemmvorrichtung, die innerhalb der Nut verschiebbar ist. Mit einer solchen Klemmvorrichtung lässt sich die von der Klemmvorrichtung gehaltene Druckplatte durch Verschieben der Klemmvorrichtung in Umfangsrichtung innerhalb der Nut spannen, so dass die Druckplatte eng am Umfang des Zylinders anliegt, oder als Ganzes in Umfangsrichtung verschieben. Die Klemmvorrichtung kann auch längs der Nut verschiebbar sein. Bei einer Maschine, die mehrere Plattenzylinder für mehrfarbigen Druck aufweist, lassen sich mit Hilfe solcher Klemmvorrichtungen die einzelnen Druckplatten passerhaltig justieren.Particularly preferred is a clamping device which is displaceable within the groove. With such a clamping device, the pressure plate held by the clamping device can be clamped by displacing the clamping device in the circumferential direction within the groove, so that the pressure plate rests tightly on the circumference of the cylinder, or move as a whole in the circumferential direction. The clamping device can also be displaceable along the groove. In a machine having a plurality of plate cylinders for multi-color printing, the individual plates can be adjusted passerhaltig using such clamps.

Dabei handelt es sich bei wenigstens einem der Klemmelemente vorzugsweise um eine parallel zur Nut verlaufende Leiste. Mit solchen Leisten lässt sich eine Druckplatte entlang einer ganzen Länge eines ihrer Endabschnitte einklemmen, wodurch die Klemmung verbessert wird.At least one of the clamping elements is preferably a bar running parallel to the groove. With such strips, a pressure plate can be clamped along a whole length of one of its end portions, whereby the clamping is improved.

Vorteilhafterweise hat eine Seite des ersten Klemmelements, mit der das erste Klemmelement die Druckplatte klemmt, im Schnitt quer zur Achse des Zylinders einen gekrümmten Verlauf. Dabei kann je nach Zweckmäßigkeit der gekrümmte Verlauf kreisbogenförmig oder ein Ellipsenabschnitt oder anderweitig beliebig gekrümmt sein. Eine solche Ausgestaltung des ersten Klemmelementes begünstigt eine knickfreie Klemmung der Druckplatte.Advantageously, one side of the first clamping element, with which the first clamping element clamps the pressure plate, in the cross-section transverse to the axis of the cylinder has a curved course. In this case, depending on the expediency of the curved course circular arc or ellipse or any other portion may be arbitrarily curved. Such an embodiment of the first clamping element favors a kink-free clamping of the printing plate.

Ebenso bevorzugt ist ein Spannelement, das eine parallel zur Nut verlaufende Spindel ist. Bei leistenförmigen Klemmelementen lässt sich mittels eines dergestalt ausgeführten Spannelementes eine Klemmkraft entlang einer ganzen Länge der Klemmelemente beaufschlagen, was die sichere Klemmung der Druckplatte begünstigt.Also preferred is a clamping element, which is a parallel to the groove extending spindle. In the case of strip-shaped clamping elements, a clamping force can be applied along an entire length of the clamping elements by means of a clamping element designed in this way, which favors secure clamping of the pressure plate.

Vorzugsweise hat die Spindel einen im wesentlichen kreissegmentförmigen Querschnitt mit einer ersten Abplattung. Eine solche Spindel lässt sich durch einfaches Drehen aus der Klemmposition in die gelöste Position und umgekehrt bringen. Dabei ist die Abplattung in der gelösten Position im wesentlichen gegen eine der beiden Klemmleisten gerichtet, wodurch sich das Spiel der Spindel im Zwischenraum zwischen den Klemmleisten ergibt.Preferably, the spindle has a substantially circular segment-shaped cross section with a first flattening. Such a spindle can be brought by simply turning from the clamping position to the released position and vice versa. The flattening in the released position is directed substantially against one of the two terminal strips, resulting in the game of the spindle in the space between the terminal strips.

Eine weitere Ausführung der Spindel weist eine zweite Abplattung und eine dritte Abplattung auf, die diametral zueinander an der Spindel angeordnet sind, wobei in der Klemmposition die zweite Abplattung gegen das zweite Klemmelement drückt und die dritte Abplattung vom Federteil gedrückt wird. Mit der zweiten und der dritten Abplattung wird bewirkt, dass die Spindel in der Klemmposition einrastet.A further embodiment of the spindle has a second flattening and a third flattening, which are arranged diametrically opposite each other on the spindle, wherein pressed in the clamping position, the second flattening against the second clamping element and the third flattening is pressed by the spring member. The second and the third flattening causes the spindle to engage in the clamping position.

Vorteilhafterweise sind in einem der Klemmelemente Zapfen vorhanden, an denen die Druckplatte eingehakt wird. Dank den Zapfen wird die Montage der Druckplatte weiter vereinfacht, da sie an einem Herausrutschen zwischen den beiden Klemmelementen gehindert wird.Advantageously, pins are present in one of the clamping elements, on which the pressure plate is hooked. Thanks to the pins assembly of the pressure plate is further simplified because it is prevented from slipping out between the two clamping elements.

Wie bereits erwähnt ist der Zylinder besonders bevorzugt Teil einer Rotationsdruckmaschine.As already mentioned, the cylinder is particularly preferably part of a rotary printing machine.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Es zeigen:

Fig. 1
einen Querschnitt durch einen Teil eines Zylinders und einer Klemmvorrichtung;
Fig. 2
eine Vorderansicht eines ersten Klemmelementes.
Show it:
Fig. 1
a cross section through a part of a cylinder and a clamping device;
Fig. 2
a front view of a first clamping element.

Fig. 1 zeigt einen Querschnitt durch einen Teil eines Zylinders 01 mit einer zugehörigen Klemmvorrichtung 02. Dabei ist die Klemmvorrichtung 02 innerhalb einer längsgehenden Nut 11 im Zylinder 01 angeordnet und gänzlich in dieser Nut 11 aufgenommen. Am Umfang des Zylinders 01 ist eine Platte 03, z. B. Druckplatte 03 befestigt, die mit einem Endabschnitt abgebogen und in der Klemmvorrichtung 02 eingeklemmt ist. Fig. 1 shows a cross section through a portion of a cylinder 01 with an associated clamping device 02. In this case, the clamping device 02 is disposed within a longitudinal groove 11 in the cylinder 01 and completely received in this groove 11. At the periphery of the cylinder 01 is a plate 03, z. B. pressure plate 03, which is bent with an end portion and clamped in the clamping device 02.

Zur Klemmvorrichtung 02 gehören ein erstes Klemmelement 04, ein zweites Klemmelement 06, ein Lagerbock 17 mit einem Federteil 07 und ein Spannelement 08. Bei dem ersten Klemmelement 04 handelt es sich um eine sich durch die Länge der Nut 11 erstreckende L-Profilleiste 04. In einem in der Zeichnung senkrechter Schenkel 18 der L-Profilleiste 04 sind Zapfen 16 angeordnet, die mit einem Endabschnitt aus dem Ende des Schenkels 18 herausragen und formschlüssig durch Löcher am Rand der Druckplatte 03 hindurchgreifen. In einem in der Fig. 1 waagerechten Schenkel 19 der L-Profilleiste 04 ist auf der Seite des Schenkels 18 eine Ausnehmung 21 in einem dem Schenkel 18 entgegengesetzten Endabschnitt des Schenkels 19 vorgesehen. Die L-Profilleiste 04 ist innerhalb der Nut 11 derart angeordnet, dass der Schenkel 18 zu einem Durchbruch 22 der Nut 11 in der Oberfläche des Zylinders 01 hin ausgerichtet ist und der Schenkel 19 vom Durchbruch 22 wegweist.The clamping device 02 includes a first clamping element 04, a second clamping element 06, a bearing block 17 with a spring part 07 and a clamping element 08. The first clamping element 04 is an extending through the length of the groove 11 L-profile strip 04. In a vertical leg in the drawing 18 of the L-profile strip 04 pins 16 are arranged, which protrude with one end portion of the end of the leg 18 and positively engage through holes on the edge of the pressure plate 03. In one in the Fig. 1 horizontal leg 19 of the L-shaped strip 04 is provided on the side of the leg 18 a recess 21 in a leg 18 opposite end portion of the leg 19. The L-profile strip 04 is disposed within the groove 11 such that the leg 18 to an opening 22nd the groove 11 is aligned in the surface of the cylinder 01 out and the leg 19 points away from the opening 22.

Der Lagerbock 17 liegt auf dem waagerechten Schenkel 19 der L-Profilleiste 04 auf und am senkrechten Schenkel 18 an. An einem dem senkrechten Schenkel 18 zugewandten Endabschnitt weist der Lagerbock 17 ein Drehlager 23 auf. In einem von dem senkrechten Schenkel 18 abgewandten Endabschnitt weist der Lagerbock 17 eine parallel zur Nut 11 verlaufende kanalförmige Nut 24 auf. Am Drehlager 23 ist das zweite Klemmelement 06 angelenkt, während die Nut 24 als Lager 24 für das Spannelement 08 dient. Am tiefsten Punkt des Lagers 24 ist ein Durchbruch 26 als Eingriff für das Federteil 07 vorgesehen.The bearing block 17 rests on the horizontal leg 19 of the L-profile strip 04 and on the vertical leg 18 at. On a vertical leg 18 facing the end portion of the bearing block 17 has a pivot bearing 23. In an end portion facing away from the vertical leg 18, the bearing block 17 has a channel-shaped groove 24 extending parallel to the groove 11. At the pivot bearing 23, the second clamping element 06 is articulated, while the groove 24 serves as a bearing 24 for the clamping element 08. At the lowest point of the bearing 24, an opening 26 is provided as engagement for the spring part 07.

Das zweite Klemmelement 06 erstreckt sich durch die Länge der Nut 11 und ist am Drehlager 23 um eine Längsachse schwenkbar angelenkt. Somit wirkt das Klemmelement 06 wie ein zweiarmiger Hebel. Ein dem Durchbruch 22 zugewandter Hebelarm bildet eine Klemmleiste 06, die auf dem senkrechten Schenkel 18 der L-Profilleiste 04 aufliegt. Die Klemmleiste 06 weist Bohrungen 27 auf, in welche die aus dem Schenkel 18 ragenden Zapfen 16 hineinragen.The second clamping element 06 extends through the length of the groove 11 and is pivoted on the pivot bearing 23 about a longitudinal axis. Thus, the clamping member 06 acts as a two-armed lever. A breakthrough 22 facing lever arm forms a terminal block 06 which rests on the vertical leg 18 of the L-profile strip 04. The terminal block 06 has holes 27 into which protrude from the leg 18 projecting pin 16.

Beim Spannelement 08 handelt es sich um eine Spindel 08, die sich durch die Länge der Nut 11 erstreckt. Die Spindel 08 hat im wesentlichen einen kreissegmentförmigen Querschnitt mit einer breiten ersten Abplattung 12. An der Spindel 08 sind diametral zueinander zwei weitere Abplattungen 13 und 14 vorgesehen, die zueinander parallel und beide senkrecht zur Abplattung 12 angeordnet sind. Die Abplattungen 13 und 14 sind viel schmaler ausgeführt als die Abplattung 12. Die Spindel 08 erstreckt sich über die ganze Länge des Lagerbockes 17 und ist in dessen Nut 24 drehbar gelagert. Der Abstand der Abplattungen 13, 14 von der Drehachse der Spindel 08 entspricht dem Krümmungsradius des kreissegmentförmigen Teils des Querschnitts; der Abstand der Abplattung 12 von der Drehachse ist kleiner.The clamping element 08 is a spindle 08, which extends through the length of the groove 11. The spindle 08 has a substantially circular-segment-shaped cross-section with a broad first flattening 12. On the spindle 08, two further flattenings 13 and 14 are provided diametrically opposite one another, which are arranged parallel to one another and both perpendicular to the flattening 12. The flattenings 13 and 14 are much narrower than the flattening 12. The spindle 08 extends over the entire length of the bearing block 17 and is rotatably mounted in the groove 24. The distance of the flattenings 13, 14 from the axis of rotation of the spindle 08 corresponds to the radius of curvature of the circular segment-shaped part of the cross section; the distance of the flattening 12 from the axis of rotation is smaller.

Das Federteil 07 umfasst mehrere Federn 09, z. B. Tellerfedern 09, auf denen eine Platte 28 gelagert ist. Die Platte 28 verfügt auf einer den Tellerfedern 09 abgewandten Seite über einen Vorsprung 29. Die Tellerfedern 09 und die Platte 28 werden von der Ausnehmung 21 des waagerechten Schenkels 19 der L-Profilleiste 04 aufgenommen. Dabei greift der Vorsprung 29 durch den Durchbruch 26 des Lagerbocks 17 ins Innere des Lagers 24 und drückt gegen die darin befindliche Spindel 08.The spring member 07 includes a plurality of springs 09, z. B. disc springs 09, on which a plate 28 is mounted. The plate 28 has on a side facing away from the plate springs 09 via a projection 29. The plate springs 09 and the plate 28 are received by the recess 21 of the horizontal leg 19 of the L-profile strip 04. In this case, the projection 29 engages through the opening 26 of the bearing block 17 into the interior of the bearing 24 and presses against the spindle located therein 08th

Wenn sich die Spindel 08 in einer gelösten Position befindet, ist sie mit der ersten Abplattung 12 entweder gegen einen vom Durchbruch 22 abgewandten Hebelarm der Klemmleiste 06 oder gegen den Vorsprung 29 des Federteils 07 gerichtet. Sie weist dann ein Spiel innerhalb des Lagers 24, d. h. in einem Zwischenraum zwischen dem Federteil 07 bzw. den Vorsprung 29 des Federteils 07 und der Klemmleiste 06 auf. Die Tellerfedern 09 drücken die Platte 28 gegen den Lagerbock 17. Die Klemmleiste 06 ist frei um das Drehlager 23 schwenkbar und kann zurückgeschwenkt werden, um die Zapfen 16 freizugeben.If the spindle 08 is in a released position, it is directed with the first flattening 12 either against a side facing away from the opening 22 lever arm of the terminal block 06 or against the projection 29 of the spring member 07. It then points a game within the warehouse 24, d. H. in a space between the spring member 07 and the projection 29 of the spring member 07 and the terminal block 06. The plate springs 09 press the plate 28 against the bearing block 17. The terminal strip 06 is freely pivotable about the pivot bearing 23 and can be pivoted back to release the pin 16.

Zur Befestigung der Druckplatte 03 wird zunächst ein mit Löchern versehener Randabschnitt der Druckplatte 03 durch den Durchbruch 22 der Nut 11 im Umfang des Zylinders 01 hindurchgeschoben und mittels der Löcher an den Zapfen 16 verhakt. Anschließend wird die Druckplatte 03 um den Zylinder 01 herumgebogen und ein gegenüberliegender Randabschnitt in einer zweiten Nut 11 in gleicher Weise verhakt. Um zu vermeiden, dass die Verbiegung zu einer dauerhaften Verformung der Druckplatte 03 führt, weist der Schenkel 18 der L-Profilleiste 04 im Schnitt quer zu einer Achse des Zylinders 01 einen gekrümmten Verlauf auf, wie in der Fig. 2 gezeigt ist. Die Krümmung hat in der gezeigten Ausführung der L-Profilleiste 04 die Form eines Kreisabschnittes.To attach the pressure plate 03, a perforated edge portion of the pressure plate 03 is first pushed through the opening 22 of the groove 11 in the circumference of the cylinder 01 and hooked by means of the holes on the pin 16. Subsequently, the pressure plate 03 is bent around the cylinder 01 and an opposite edge portion hooked in a second groove 11 in the same way. In order to avoid that the bending leads to a permanent deformation of the pressure plate 03, the leg 18 of the L-profile strip 04 in a section transverse to an axis of the cylinder 01 has a curved course, as in the Fig. 2 is shown. The curvature in the illustrated embodiment of the L-profile strip 04 has the shape of a circular section.

Um die Druckplatte 03 zwischen den beiden Klemmelementen 04 und 06 zu verklemmen, wird die Spindel 08 in die in der Fig. 1 gezeigte Klemmposition verdreht. In dieser Position drückt sie mit ihrer zweiten Abplattung 13 gegen die Klemmleiste 06 und mit der dritten Abplattung 14 gegen den Vorsprung 29 des Federteils 07. Zur Einnahme dieser Position ist ein zusätzlicher, leicht aufzubringender Kraftaufwand notwendig, so dass die Spindel 08 dank der Abplattungen 13 und 14 in der Klemmposition verrastet ist. Über den Vorsprung 29 werden die Tellerfedern 09 durch die Spindel 08 gestaucht. Sie reagieren darauf mit einer Federkraft, die über den Vorsprung 29 auf die Spindel 08 und auf das zweite Klemmelement 06 wirkt. Da das zweite Klemmelement 06 in Folge seiner schwenkbaren Lagerung am Drehlager 23 wie ein zweiarmiger Hebel wirkt, wird die Druckplatte 03 zwischen der Klemmleiste 06 des zweiten Klemmelements 06 und dem Schenkel 18 der L-Profilleiste 04 eingeklemmt.To clamp the pressure plate 03 between the two clamping elements 04 and 06, the spindle 08 in the in the Fig. 1 twisted shown clamping position. In this position presses it with its second flattening 13 against the terminal block 06 and the third flattening 14 against the projection 29 of the spring member 07. To take this position an additional, easily applied force is necessary, so that the spindle 08 thanks to the flattening 13 and 14 in the clamping position is locked. About the projection 29, the plate springs 09 are compressed by the spindle 08. They react to this with a spring force which acts on the projection 08 on the spindle 08 and on the second clamping element 06. Since the second clamping member 06 acts as a result of its pivotal mounting on the pivot bearing 23 as a two-armed lever, the pressure plate 03 between the terminal block 06 of the second clamping member 06 and the leg 18 of the L-profile strip 04 is clamped.

Je nach Dicke der eingeklemmten Druckplatte 03 werden die Tellerfedern 09 entweder mehr oder weniger gestaucht und reagieren mit einer entsprechend unterschiedlichen Federkraft, d. h. die Klemmkraft für die Druckplatte 03 nimmt mit der Dicke der Druckplatte 03 zu, weil die Tellerfedern 08 mit zunehmender Dicke der Druckplatte 03 stärker gestaucht werden. Somit stellt sich bei dieser Ausführung der Klemmvorrichtung 02 eine der Dicke der Druckplatte 03 entsprechende Klemmkraft automatisch von selber ein.Depending on the thickness of the clamped pressure plate 03, the plate springs 09 are either more or less compressed and react with a correspondingly different spring force, d. H. the clamping force for the pressure plate 03 increases with the thickness of the pressure plate 03, because the disc springs 08 are more compressed with increasing thickness of the pressure plate 03. Thus, in this embodiment of the clamping device 02, a clamping force corresponding to the thickness of the pressure plate 03 automatically adjusts itself.

Nachdem die Druckplatte 03 zwischen der L-Profilleiste 04 und dem Klemmelement 06 eingeklemmt worden ist, wird die Klemmvorrichtung 02 innerhalb der Nut 11 vom Durchbruch 22 wegverschoben, um die Druckplatte 03 am Umfang des Zylinders 01 zu spannen. Zu diesem Zweck ist eine Spannschraube 31 vorgesehen, welche gegen eine Wand der Nut 11 stößt und mit der die Klemmvorrichtung 02 innerhalb der Nut 11 zum Durchbruch 22 hin oder vom Durchbruch 22 wegverschoben werden kann.After the pressure plate 03 has been clamped between the L-shaped strip 04 and the clamping element 06, the clamping device 02 is displaced away within the groove 11 from the opening 22 to tension the pressure plate 03 on the circumference of the cylinder 01. For this purpose, a clamping screw 31 is provided, which abuts against a wall of the groove 11 and with which the clamping device 02 within the groove 11 for breakthrough 22 toward or away from the opening 22 can be moved away.

Nach erfolgtem Druck wird die Druckplatte 03 vom Zylinder 01 entfernt, indem die Spindel 08 wieder in die gelöste Stellung gedreht wird, in der sie im Zwischenraum zwischen dem Federteil 07 und dem zweiten Klemmelement 06 ein Spiel hat, so dass das zweite Klemmelement 06 wieder frei schwenkbar ist. Nun kann die Klemmleiste 06 des zweiten Klemmelements 06 leicht zurückgeschwenkt werden, wodurch die Zapfen 16 freigelegt werden und die Druckplatte 03 von den Zapfen 16 enthakt werden kann.After printing, the pressure plate 03 is removed from the cylinder 01 by the spindle 08 is rotated back into the released position in which it has a clearance in the space between the spring member 07 and the second clamping member 06, so that the second Clamping element 06 is free to pivot again. Now, the terminal block 06 of the second clamping member 06 can be easily swung back, whereby the pin 16 are exposed and the pressure plate 03 can be enthakt of the pin 16.

Die Erfindung ist nicht auf die beschriebene Ausführung beschränkt. Vielmehr sind alternative Ausgestaltungen der gezeigten Klemmvorrichtung 02 möglich, ohne den Erfindungsgedanken zu verlassen. So handelt es sich in der beschriebenen Ausgestaltung der Klemmvorrichtung 02 bei dem ersten Klemmelement 04 bzw. der L-Profilleiste 04 um eine sich über die ganze Länge der Nut 11 erstreckende Leiste, wobei auch das zweite Klemmelement 06 als durchgängige Leiste ausgestaltet ist. Alternativ dazu kann das zweite Klemmelement 06 aus mehreren Klemmhebeln bestehen, die an mehreren Lagerböcken 17 angelenkt sind. Ebenso kann das erste Klemmelement 04 aus mehreren L-Profilstücken 04 bestehen, an denen die Lagerböcke 17 aufliegen, statt als durchgängige L-Profilleiste 04 ausgebildet zu sein. Ganz allgemein können das erste Klemmelement 04 und das zweite Klemmelement 06 in beliebiger Kombination einstückig als Leisten ausgebildet sein oder aus mehreren Stücken bestehen.The invention is not limited to the embodiment described. Rather, alternative embodiments of the clamping device 02 shown are possible without departing from the inventive concept. So it is in the described embodiment of the clamping device 02 at the first clamping element 04 and the L-profile strip 04 to a over the entire length of the groove 11 extending bar, wherein the second clamping element 06 is designed as a continuous bar. Alternatively, the second clamping member 06 may consist of several clamping levers, which are hinged to a plurality of bearing blocks 17. Likewise, the first clamping element 04 may consist of several L-profile pieces 04, on which the bearing blocks 17 rest, instead of being formed as a continuous L-profile strip 04. In general, the first clamping element 04 and the second clamping element 06 may be integrally formed in any combination as strips or consist of several pieces.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

0101
Zylindercylinder
0202
Klemmvorrichtungclamping device
0303
Platte, DruckplattePlate, pressure plate
0404
Klemmelement, erstes, L-ProfilleisteClamping element, first, L-profile strip
0505
--
0606
Klemmelement, zweites, KlemmleisteClamping element, second, terminal block
0707
Federteilspring part
0808
Spannelement, SpindelClamping element, spindle
0909
Feder, TellerfedernSpring, disc springs
1010
--
1111
Nutgroove
1212
Abplattung, ersteFlattening, first
1313
Abplattung, zweiteFlattening, second
1414
Abplattung, dritteFlattening, third
1515
--
1616
Zapfenspigot
1717
Lagerbockbearing block
1818
Schenkel, senkrechterThighs, more vertical
1919
Schenkel, waagrechterThighs, horizontal
2020
--
2121
Ausnehmungrecess
2222
Durchbruchbreakthrough
2323
Drehlagerpivot bearing
2424
Nut, LagerGroove, bearing
2525
--
2626
Durchbruchbreakthrough
2727
Bohrungendrilling
2828
Platteplate
2929
Vorsprunghead Start
3030
--
3131
Spannschraubeclamping screw

Claims (12)

  1. A clamping device (02) for fastening a plate (03) to the periphery of a cylinder (01), the clamping device (02) comprising a first clamping element (04), a pivotably mounted second clamping element (06), a spring part (07) and a tensioning element (08) which is formed as a pivotable spindle (08) which can be moved between a clamping position, in which it holds the plate (03) clamped in between the clamping elements (04; 06), and a released position, in which the clamping elements (04; 06) release the plate (03), characterized in that the spindle (08) is mounted rotatably in a groove (24), in that the spindle (08) is fitted in an interspace between the spring part (07) and the second clamping element (06),in that in the clamping position, the spindle (08) is pressed against the second clamping element (06) and in that in the released position the clamping device (02) has a play in the interspace between the spring part (07)and the second clamping element (06).
  2. The clamping device (02) as claimed in claim 1, characterized in that the spring part (07) comprises at least one disk spring (09).
  3. The clamping device (02) as claimed in one of the preceding claims, characterized in that the clamping device (02) is arranged in an elongated groove (11) in the cylinder (01).
  4. The clamping device (02) as claimed in claim 3, characterized in that the clamping device (02) can be displaced within the groove (11).
  5. The clamping device (02) as claimed in either of claims 3 and 4, characterized in that at least one of the clamping elements (04; 06) is a bar running parallel to the groove (11).
  6. The clamping device (02) as claimed in one of claims 3 to 5, characterized in that one side of the first clamping element (04), with which the first clamping element (04) clamps the plate (03), has a curved profile in section transversely with respect to the axis of the cylinder (01).
  7. The clamping device (02) as claimed in one of claims 3 to 6, characterized in that the spindle (08) is arranged to run parallel to the groove (11).
  8. The clamping device (02) as claimed in claim 7, characterized in that the spindle (08) has a cross section substantially in the form of a circular segment with a first flat (12).
  9. The clamping device (02) as claimed in claim 8, characterized by a second flat (13) and a third flat (14), which are arranged diametrically with respect to each other on the spindle (08), in the clamping position the second flat (13) pressing against the second clamping element (06) and the third flat (14) being pressed by the spring part (07).
  10. The clamping device (02) as claimed in one of the preceding claims, characterized in that there are pins (16) on one of the clamping elements (04; 06), on which pins the plate (03) is hooked in.
  11. The clamping device (02) as claimed in one of the preceding claims, characterized in that the cylinder (01) is arranged in a rotary press.
  12. The clamping device (02) as claimed in claim 1, characterized in that the spindle (08) has eccentric sections.
EP03750293A 2002-09-06 2003-08-28 Clamping device for a printing plate Expired - Lifetime EP1534521B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10241284 2002-09-06
DE10241284A DE10241284B3 (en) 2002-09-06 2002-09-06 Clamping device for fixing a plate, especially a printing plate, on the periphery of a cylinder comprises a first clamping element, a pivotably mounted second clamping element
PCT/DE2003/002863 WO2004024450A1 (en) 2002-09-06 2003-08-28 Clamping device for a printing plate

Publications (2)

Publication Number Publication Date
EP1534521A1 EP1534521A1 (en) 2005-06-01
EP1534521B1 true EP1534521B1 (en) 2008-09-17

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US (1) US7640855B2 (en)
EP (1) EP1534521B1 (en)
JP (1) JP4629437B2 (en)
CN (1) CN100340400C (en)
AT (1) ATE408502T1 (en)
AU (1) AU2003269687A1 (en)
DE (2) DE10241284B3 (en)
WO (1) WO2004024450A1 (en)

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JP6823505B2 (en) * 2017-03-09 2021-02-03 本田技研工業株式会社 Joint structures, hand devices, robot arms and robots
DE102018214610A1 (en) * 2017-09-26 2019-03-28 Heidelberger Druckmaschinen Ag Cylinder with a clamping rail for holding a cylinder lift in a printing machine

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DE2606773C3 (en) * 1976-02-19 1984-06-20 Erich 4600 Dortmund Bock Device for fastening and tensioning a flexible printing plate on or on a forme cylinder of a rotary printing press
DE3010301A1 (en) * 1980-03-18 1981-09-24 Horst 5600 Wuppertal Kieper Fast action clamp for rotary printing machine plates - has rod with cam profile operating clamp pins to hold printing plate
DE3422530C1 (en) * 1984-06-16 1985-10-10 Janko 6052 Mühlheim Despot Device for attaching a flexible printing plate
DE3821324C2 (en) * 1988-06-24 1994-03-10 Heidelberger Druckmasch Ag Sheet grippers on sheet-fed rotary printing machines
JP2926656B2 (en) * 1989-09-13 1999-07-28 アキヤマ印刷機製造 株式会社 Plate twist adjustment mechanism for sheet-fed printing press
JP2844539B2 (en) * 1989-12-15 1999-01-06 株式会社小森コーポレーション Plate holding device for printing press
DE4112666C2 (en) * 1991-04-18 1994-07-28 Heidelberger Druckmasch Ag Device for remote control of clamping devices on cylinders in rotary printing machines
US5374093A (en) * 1991-12-10 1994-12-20 Am International Inc. Gripper assembly
DE4341431C2 (en) * 1993-12-04 2002-11-07 Koenig & Bauer Ag Device for clamping and tensioning flexible pressure plates
JP3073683B2 (en) * 1996-01-17 2000-08-07 リョービ株式会社 Plate clamp device for printing press
DE59800202D1 (en) * 1997-04-30 2000-08-24 Roland Man Druckmasch Clamping device
JP2000218765A (en) * 1999-01-29 2000-08-08 Mitsubishi Heavy Ind Ltd Printing plate clamping device for printing press
EP1176796B1 (en) * 2000-07-28 2010-12-15 FUJIFILM Corporation Sheet member holding device

Also Published As

Publication number Publication date
JP2005537957A (en) 2005-12-15
US20060117976A1 (en) 2006-06-08
WO2004024450A1 (en) 2004-03-25
AU2003269687A1 (en) 2004-04-30
CN1678457A (en) 2005-10-05
DE50310526D1 (en) 2008-10-30
EP1534521A1 (en) 2005-06-01
US7640855B2 (en) 2010-01-05
JP4629437B2 (en) 2011-02-09
DE10241284B3 (en) 2004-03-18
ATE408502T1 (en) 2008-10-15
CN100340400C (en) 2007-10-03

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