WO2004028808A1 - Klemmvorrichtung zum klemmen einer flexiblen bespannung eines zylinders einer druckmaschine - Google Patents
Klemmvorrichtung zum klemmen einer flexiblen bespannung eines zylinders einer druckmaschine Download PDFInfo
- Publication number
- WO2004028808A1 WO2004028808A1 PCT/CH2003/000639 CH0300639W WO2004028808A1 WO 2004028808 A1 WO2004028808 A1 WO 2004028808A1 CH 0300639 W CH0300639 W CH 0300639W WO 2004028808 A1 WO2004028808 A1 WO 2004028808A1
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- WO
- WIPO (PCT)
- Prior art keywords
- clamping
- channel
- cylinder
- clamping body
- rotation
- Prior art date
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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
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means
Definitions
- Clamping device for clamping a flexible covering of a cylinder
- the invention relates to a clamping device of a printing press cylinder, which serves to clamp a flexible covering of the cylinder to the cylinder.
- a clamping device as the invention relates to it, is required in particular for blanket cylinders and / or forme cylinders of rotary printing presses in order to fasten a blanket or a flexible printing form, which is stretched onto a lateral surface of such a cylinder, to the cylinder while maintaining the tension ,
- the cylinders have one or usually several axial channels on their lateral surface, in or in which a clamping device is formed.
- an axial channel is formed on a lateral surface of a printing cylinder, which has channel walls which, up to a channel opening on the lateral surface of the printing cylinder, each run at an acute angle to the radial at an acute angle.
- a clamping body with side surfaces that converge toward one another is arranged in the channel and clamped in the direction of the channel opening, so that its two side surfaces are pressed against the channel walls that converge at the same angle.
- a clamping gap for the covering is formed between one of the two channel walls and the facing side surface of the clamping body.
- the clamping gap is set by means of support bodies which are arranged such that they can be adjusted transversely to the clamping body. From DE 195 09 561 AI and DE 200 22 737 Ul clamping devices are known which have clamping cams pivotably arranged in a channel of a pressure cylinder. The clamping cams can be pivoted back and forth between a clamping position and an exemption.
- the known clamping devices are not yet optimal, particularly with regard to their handling.
- USP 5,010,818 discloses a clamping device which comprises a plurality of cylindrical clamping bodies, each of which in the radial direction of a pressure cylinder
- the clamping bodies can be moved transversely to an axis of rotation of the cylinder in two non-parallel directions, on the one hand by radially deflecting the spring elements and on the other hand in the tangential direction of the cylinder.
- the movement in the tangential direction is accompanied by a tilting and / or bending of the spring elements.
- USP 5,123,353 discloses a clamping device with a clamping shaft which is movably mounted on a bearing device of a pressing device against an elastic force generated by the pressing device.
- the clamping shaft is circular-cylindrical over part of its outer circumference and polygonal opposite the circular-cylindrical part
- ⁇ 0 either two or three flats. With its flattened areas, it rests on the storage facility. Depending on the number of flattenings, it can assume two or three discrete rotational angle positions. In its circular-cylindrical peripheral part, it is shaped so that it does not form a clamping gap when the covering is drawn in.
- the clamping shaft is used to clamp the ends of the covering using a
- Tool rotated into a predetermined angle of rotation position in which it presses the ends of the covering against one of the gap ends of the cylinder channel, forming a clamping gap.
- Two axial side walls of the channel serve as abutments for the clamping shaft, between which the clamping shaft is surrounded so as to be movable in the radial direction.
- Other clamping devices are from DE 42 38 343 AI, USP 2,900,904, USP 5,485,785, USP 5,123,353, DE 35 35 138 AI, DE 101 08 745 Cl, DE 44 15 624 AI, DE 26 20427 B2 and USP 4,577,560.
- the invention relates to a clamping device of a cylinder of a printing press, preferably a printing press for the printing of large newspaper runs.
- the clipping device comprises at least one clamping body, a bearing device on which the at least one clamping body is supported, and a pressing device for the clamping body.
- the at least one clamping body has a surface which, in the cylinder channel with a counter surface, has a clamping gap for at least one which projects through a channel opening
- the counter surface is preferably a channel wall formed by the cylinder itself or firmly connected to the cylinder.
- the counter surface in the channel can also be movable relative to the cylinder, for example, in turn also rotatable, in order to facilitate the introduction of a free end of the covering into the clamping gap.
- ! 0 generates a clamping force with which the at least one clamping body and the counter surface are pressed towards one another in order to form the clamping gap.
- the at least one clamping body and the counter surface are preferably pressed against one another before the at least one clothing end is drawn in.
- the pressing force can only be brought about by inserting the clothing end
- the at least one clamping body is mounted in such a way that its
- the at least one Clamping body thus has two degrees of freedom of movement in the cross-sectional plane of the cylinder and permanently presses against the counter surface.
- the two directions of movability of the clamping body center of gravity and the cylinder axis of rotation preferably each point at a right angle to one another. Will that be at least one
- the at least one clamping body is moved against the clamping force by the thickness of the covering end away from the counter surface or compressed elastically or both in combination.
- the at least one clamping body is permanently supported on bearing surfaces and held in this way.
- the counter surface forming the ⁇ 0 clamping gap forms one of the bearing surfaces.
- At least two further bearing surfaces point at an angle to the counter surface and also at an angle to one another.
- Preferably, exactly three bearing surfaces support and center the at least one clamping body.
- the at least one clamping body does not have to be moved from an exemption into a clamping position, but is constantly in the clamping position.
- the at least one end of a covering can be inserted or retracted in the clamping position.
- two ends of the same fabric or one end of two fabrics are clamped in the clamping gap.
- the bearing device can be moved transversely to the axis of rotation of the cylinder against a force exerted by the pressing device on the at least one clamping body.
- the bearing device can be moved in one of the two directions of mobility of the at least one clamping body.
- bearing device supports the at least one clamping body in one of the two directions of its mobility and guides it in the other.
- the bearing device accordingly forms a guideway along which the at least one clamping body is guided, preferably by rolling and / or sliding on the guideway.
- the surface of the at least one clamping body, which forms the clamping gap with the counter surface, can itself be guided on the guideway.
- the clamping body is guided in a different way on the guideway, preferably by means of an engagement member which is rigidly or optionally rotatably connected to the at least one clamping body.
- the circumference of the engagement member should not be against the counter surface! and preferably only press against the bearing device. It can protrude from the clamping body as a journal, ie as a journal.
- the engaging member is considered to belong to the clamping body, since it follows its movements in the two directions.
- the at least one clamping body is supported on bearing surfaces, which are preferably formed in the) channel of the cylinder.
- bearing surfaces are preferably formed by the bearing device, which is arranged movably in the channel in preferred embodiments.
- the further bearing surfaces can in particular be formed by the cylinder itself and / or by a filler piece rigidly connected to the cylinder.
- the clamping body is mounted so that it can move in the two non-parallel directions.
- the bearing can in particular be a floating bearing, which is preferably formed by means of the movably arranged bearing device.
- the at least one clamping body can be made in one piece and homogeneously from a single material, for example from
- the at least one clamping body is centered between bearing surfaces which cannot be moved relative to one another.
- One of the bearing surfaces is again formed by the counter surface forming the clamping gap.
- the at least one clamping body can have a cylindrical jacket made of an elastically resilient material, which envelops a hard core made of another material.
- a clamping body can also be formed entirely from the resilient material.
- a hard core made of a material with a higher density compared to the material of the jacket is particularly preferred if that caused by the rotary movement of the cylinder Centrifugal force is to be used to increase the clamping force.
- a clamping body is arranged movably as a whole in the channel. However, at least its center of gravity can still be moved in the two non-parallel directions. In these versions, the clamping body itself forms the pressing device. If a hard core is covered with an elastically resilient covering, the covering is so thick that it extends around its circumference by at least the thickness of one covering end,
- the surface of the at least one clamping body forming the clamping gap is shaped in such a way that, together with the counter surface in the cross-sectional plane of the cylinder, it forms an opening funnel which widens towards an opening 5 of the channel in order to insert or withdraw the to facilitate at least one string end.
- the surface of the at least one clamping body which forms the clamping gap is preferably shaped such that the clamping force acts only along a narrow, axially extending surface even in the case of an elastically flexible surface and / or counter surface. In this way, an advantageously large specific surface pressure can be achieved in the clamping gap.
- the at least one clamping body can be triangular or quadrangular in cross section or have a different polygonal shape and form the 5 clamping gap with one of its polygonal edges.
- the polygonal edges are preferably slightly rounded, without losing their character as a polygon.
- the arrangement is also preferably such that a linear clamping force and the opening funnel are formed.
- the surface of the at least one clamping body forming the clamping gap is round. It is preferably circular.
- the formation of the opening funnel while maintaining the clamping gap or the clamping force acting in the clamping gap works particularly advantageously together with the movability of the at least one clamping body in the two non-parallel directions, but it already brings about such mobility, which forms the subject of this application , Benefits.
- the at least one clamping body is arranged so as to be rotatable about an axis of rotation and, preferably around the axis of rotation, has the round surface forming the clamping gap.
- the round surface of the clamping body is shaped and extends so far in the circumferential direction around the axis of rotation of the clamping body that the clamping gap during a rotational movement which the clamping body executes for clamping and releasing the covering,
- the clamping force remains at least essentially the same, preferably according to size and direction, during this rotary movement with unchanged clamping gap thickness.
- the clamping body is in the clamping position over the entire rotation angle range over which its round surface forming the clamping gap extends. This facilitates the introduction of a free end of the clothing into the clamping gap.
- the rotation angle range over which the surface of the at least one clamping body, which forms the clamping gap is sufficiently large, in an advantageous further development the flexible covering can also be tightened by a corresponding rotary movement of the at least one clamping body.
- the round surface which forms the clamping gap with the counter surface particularly preferably extends over 360 °.
- the clamping body is preferably rotatable through 360 ° about its axis of rotation.
- the round surface of the clamping body forming the clamping gap is rotationally symmetrical with respect to the axis of rotation of the clamping body.
- the clamping body is particularly preferably formed as a circular cylinder, and the round surface is accordingly an outer surface of the circular cylinder.
- the at least one clamping body can also be a rotating body that deviates from the circular cylinder, if a pinching force in the clamping gap is sufficient or even desired.
- the at least one clamping body advantageously forms the clamping gap in each rotational angle position over a full revolution, as a result of which incorrect operation is counteracted particularly reliably.
- the pressing device is preferably a spring device that the at least one
- the pressing device is preferably arranged in the channel.
- it comprises at least one spring element arranged in the channel and supported on the cylinder. If the at least one clamping body is rotatably arranged, it is preferably rotatable about its axis of rotation relative to the pressing device.
- a plurality of clamping bodies of the type described can be arranged axially spaced apart from one another along a shaft or axis.
- the clamping bodies can be formed in one piece by the shaft or axis or else fastened to a shaft or axis and in this embodiment preferably each on the shaft
- a plurality of spring elements are preferably spaced apart along the shaft or axis in order to press the plurality of clamping bodies evenly against the counter surface over the entire length of the shaft. If the clamping bodies are rotatable, the rotary bearing is also an alternative to the preferred shaft formation
- the shaft or axle sections between two adjacent clamping bodies preferably form the pins already mentioned, by means of which the clamping bodies are supported on the bearing device.
- a plurality of clamping bodies of the type described are arranged axially next to one another and are each subjected to a clamping force, as was described with the aid of a clamping body.
- Each of the clamping bodies can be mounted separately from each other of the clamping bodies.
- a plurality of clamping bodies preferably two clamping bodies each, are connected to one another and each form a clamping body group which is mounted separately, preferably 1-5 by means of pins which each connect adjacent clamping bodies of a group.
- the at least one clamping body and the counter surface which forms the clamping gap with it are preferably arranged with respect to one another in such a way that the clamping force has a directional component which points in the direction of the centrifugal force which occurs during the
- Rotation of the cylinder works. It is further preferred if the at least one clamping body as a whole or at least its center of gravity can be moved radially to the axis of rotation of the cylinder. At the maximum rotational speed of the cylinder that occurs during operation, the portion of the clamping force caused by the centrifugal force is advantageously significantly greater than that generated by the pressing device
- a blocking device can be provided which connects the clamping body with the cylinder in a blocking engagement in such a way that a backward rotation of the clamping body
- a blocking device can in particular be formed by a releasable freewheel, which does not hinder the rotary movement of the clamping body in a clamping direction of rotation, but blocks the clamping body against a reverse rotating movement.
- a blocking device is preferably dispensed with, which is possible in particular if the centrifugal force supports the clamping.
- the clamping body rotates in a clamping or rotating direction when the free end is pressed into the clamping gap and rolls with its round surface forming the clamping gap onto the free end of the covering.
- a rotary drive of the at least one clamping body is not necessary, a rotary drive should not be excluded. Because of the maintenance of the clamping gap over a rotation angle range, a 75 rotationally driven clamping body can be used to pull a free end of the flexible covering into the clamping gap and / or out of the clamping gap push out.
- a rotary drive can also form the blocking device mentioned, for example by self-locking of the rotary drive. Self-locking can be achieved, for example, by using a worm gear.
- Fig. 1 shows a part of a pressure cylinder near the surface with an axial
- FIG. 2 is a longitudinal view of the clamping device of FIG. 1,
- Fig. 3 shows a part of a drain cylinder near the surface with an axial
- FIG. 4 shows a part of a drain cylinder near an outer surface with an axial
- Embodiment is formed.
- FIG. 1 shows a part of a printing cylinder 1 close to the outer surface of a web-fed rotary printing press for the offset printing of large newspaper runs.
- the outer surface of the printing cylinder 1 is covered with a flexible covering.
- the flexible covering is a rubber blanket 2, which is vulcanized or glued to a flexible plate 3.
- the printing cylinder 1 is accordingly a blanket cylinder.
- the two free ends of the flexible plate 3 are inserted into a channel 6 and are clamped in the channel 6 by means of a clamping device.
- the two clamped ends do not have to be the ends of the same plate and are in also not in many applications, for example if the printing cylinder is a plate cylinder.
- the channel 6 extends axially, ie parallel to one
- the channel opening 7 is delimited by two boundary edges lv and 8n, which are axially parallel in the circumferential direction. If the cylinder 1 is driven in rotation in the direction of rotation D indicated by an arrow, the boundary edge lv forms the leading edge and the
- boundary edge 8n forms the trailing edge of the channel opening 7.
- the channel 6 widens in cross section from the boundary edges lv and 8n on both sides of a radial R to the axis of rotation Dz of the cylinder 1.
- the channel opening 7 and the adjacent channel walls 4 and 5 are in Cross-section to the radial R axisymmetric. The ends of the flexible plate 3 inserted into the channel 6 protrude beyond the rubber blanket 2
- the rubber blanket 2 itself is not inserted into the channel 6, but instead forms a narrow slot at the channel opening 7, or the two ends of the rubber blanket 2 abut one another above the channel opening 7.
- a clamping device is formed in the channel 6.
- the clamping device comprises
- the clamping device further comprises a pressing device which, in the exemplary embodiment, comprises a plurality of spring elements 13 arranged alongside one another along the shaft 11 and a bearing device for the shaft 11.
- the bearing device is formed by a plurality of bearing pieces 12, namely one bearing piece 12 per spring element 13.
- the spring elements 13 each act in the radial direction, based on the axis of rotation Dz of the cylinder 1, via the bearing pieces 12 on the shaft 11 pressed by the pressing device in the radial plane of symmetry of the channel 6 radially outward against the channel walls 4 and 5, which extend from the two boundary edges lv and 8n to one side of the 5 radial planes of symmetry.
- the two channel walls 4 and 5 are flat and each run axially. Because of the symmetry, they each point under the same
- the clamping bodies 10 each form a clamping gap on their lateral surfaces S with the channel wall 4 on the leading side of the channel 6 and with the channel wall 5 on the trailing side of the channel 6.
- the channel walls 4 and 5 form in the two clamping gaps the counter surfaces for the lateral surfaces S of the clamping body 10.
- the two free ends of the flexible plate 3 are inserted and are between the channel wall 4 and the lateral surfaces S of the clamping body 10 are each clamped with a linear clamping force F.
- the insertion of the plate ends is facilitated by the funnel-shaped opening which forms the surface S with the counter surface 4.
- FIG. 2 shows the clamping device in a longitudinal view, the clamping bodies 10, the shaft 11 connecting them or formed with them in one piece, the bearing pieces 12 and the spring elements 13 in the view and the cylinder 1 in a longitudinal section of the radial plane of symmetry.
- the cross section A-A shown in FIG. 1 is entered in FIG.
- the clamping bodies 10 are each formed at the same distance along the shaft 11 or expediently secured against displacement on the continuous shaft 11 and preferably secured against rotation. Leaner shaft sections remain between the clamping bodies 10, which project like pins from the clamping bodies 10 and in which one of the spring elements 13 acts on the shaft 11 via a respective bearing piece 12.
- the spring elements 13 are received in radial bores of the cylinder 1.
- the bores form radial guides for the spring elements 13 each formed as compression springs.
- the central longitudinal axes of the circular bores are in each case radial R on the axis of rotation Dz of the cylinder 1, which extend in the radial plane of symmetry of the channel 6.
- the shaft 11 is rotatable in the channel 6 about its axis of rotation D K , the spring elements 13 pressing the shaft 11 against the two channel walls 4 and 5 via the bearing pieces 12.
- the channel walls 4 and 5 and the bearing pieces 12 form a three-point bearing and a three-line bearing in cross-section, through which the clamping body 10 is centered.
- the clamping body 10 can slide on both channel walls 4 and 5 and also on the bearing pieces 12.
- the free rotation of the shaft 11 is only due to the frictional forces in the ) three contact points hindered, but not prevented.
- the resulting frictional force is determined by the material and the roughness of the contact surfaces and by the resulting elastic force G exerted on the shaft 11 by the spring elements 13.
- the clamping force F acting on the ends of the flexible plate 3 in the clamping gap between the clamping bodies 10 and the channel wall 4 is determined by a
- each of the clamping bodies 10 is a circular cylinder.
- the bearing pieces 12 each form for the shaft 11 an axial bearing surface 9, relative to which the shaft 11 and the clamping body 10 can be displaced in parallel.
- the bearing surfaces 9 formed by the bearing pieces 12 are flat and point transversely, in the example even exactly perpendicularly, to the radial R and to the axis of rotation Dz, as can be seen in FIG. 1.
- the bearing surfaces 9 i are guideways for the transverse displacement of the shaft 11.
- the slimmer sections of the shaft 11 remaining between the clamping bodies 10 form engagement members which can slide and / or roll on the bearing surfaces 9.
- the bearing surfaces 9 as a whole and the channel walls 4 and 5 form three mutually angled bearing surfaces which enclose the shaft 11 in a triangular shape and center it
- both ends can also be pushed one above the other simultaneously into the clamping gap. Due to the movability of the clamping body 10 or the shaft 11 both in the radial and in the tangential direction, each based on the axis of rotation
- clamp body 10 is the same. in particular, it is not necessary to ensure that the clamping bodies 10 are in a specific angle of rotation position. In this respect, too, there is no distinction between the clamping position and the release of the clamping device. Removing the flexible plate 3 with the rubber blanket 2 is also facilitated. Manipulations on the clamping device itself are not necessary for clamping or removing. For removal, the clamped ends of the flexible plate 3 can be pulled out of the clamping gap by known auxiliary devices, for example a suction device.
- the shaft 11 can, but does not have to be driven in rotation. If the shaft 11 is driven by a motor or, if appropriate, by means of a hand crank, the ends of the flexible plate 3 can also be pulled into the clamping gap by the rotating movement of the shaft 11, which is effected by motor or manually, and pressed out of the clamping gap.
- the channel opening 7 has a gap width of 1 to 2 mm, typically 1.5 mm, in the circumferential direction.
- the diameter of the clamping body 10 is between 20 and 30 mm.
- the both channel walls 4 and 5 form an angle between them which should be at least 60 ° and at most 90 °.
- the channel 6 is formed in an axial recess of the cylinder 1 on the cylinder surface, which is larger than the channel 6.
- a filler piece 8 is inserted into the recess with a precise fit.
- the filler 8 forms the channel walls, in particular the channel wall 5, on one side of the radial one
- the channel walls to the other side of the radial plane of symmetry are formed directly by the cylinder 1; in the exemplary embodiment, it is in particular the leading channel wall 4 which forms the clamping gap.
- the filler 8 furthermore forms a section of the cylinder jacket surface which is short in the circumferential direction, including the trailing boundary edge 8n of the
- the recess in the cylinder 1 has a sufficiently large extent in the circumferential direction to enable the pressing device and the shaft 11 forming the clamping body 10 to be inserted.
- the filler 8 secures the entire arrangement in the channel 6.
- a special feature that should be mentioned in connection with the filler is the simplified shaping of the recess and the filler 8.
- the recess is shaped as a straight rectangular groove, for example milled.
- the one of the two parallel side walls of the rectangular groove forms the counter surface 4.
- the filler 8 is also characterized by rectangular edges that are easy to form. In particular, an inner edge open on two sides is formed, in which two side walls of the filling piece 8 converge at right angles. The radially inward facing of these two side walls forms the counter surface 5.
- the filler 8 is fastened to the cylinder 1 by means of screws via the other, radially outward facing side wall of the inner edge. In this way, an uninterrupted, smooth jacket surface of the cylinder 1 can also be obtained in the area of the filler 8.
- FIG. 3 shows a clamping device according to a second embodiment. Those parts of the clamping device that perform the same function as corresponding parts of the first exemplary embodiment are identified by the same reference numerals.
- the clamping device of the second exemplary embodiment also comprises a cylindrical clamping body 10, which can be arranged with a plurality of such clamping bodies 10 on a shaft or rotatably on an axis or forms a shaft of uniform thickness.
- a plurality of separate clamping bodies 10 can also be arranged axially next to one another in the channel 6, the axial lengths of the clamping bodies 10 corresponding to the lengths of the coverings 2, 3 measured in the axial direction ,
- a plurality of clamping members 10 with the same cross-section and preferably also in their lengths are arranged in a number that is greater than the number of coverings 2, 3 stretched next to one another around cylinder 1.
- the clamping body 10 or the plurality of clamping bodies 10 of the second embodiment are circular cylindrical.
- Clamping bodies 10 consist of a preferably hard material, for example steel or a material with a comparably large specific weight.
- the clamping body 10 is supported on two elastic bearing bodies 14.
- the bearing body 14 is in turn supported on the bearing surface 9 'and one bearing body 14 is additionally supported on the channel wall forming the counter surface 4 and the other bearing body 14 on the channel wall forming the counter surface 5 by the bearing body 14 in the respectively formed inner edge of the channel 6 are arranged.
- the bearing bodies 14 press the clamping body 10 against the counter surface 4 and the counter surface 5 with an elastic force before the ends of the covering 2, 3 are inserted.
- the combination of the bearing bodies 14 can be deflected to such an extent that the two ends of the covering 2, 3 can be inserted into the clamping gap.
- the clamping body 10 is displaced away from the counter surface 4, preferably normal to the counter surface 4, against the restoring elastic force of the bearing body 14 arranged opposite the counter surface 4.
- Will the The clamping gap formed with the counter surface 5 applies accordingly to the bearing body 14 arranged opposite the counter surface 5.
- the clamping body 10 can be rotated about its own axis of rotation D K. The rotatability is not absolutely necessary, but it makes it easier to pull in and remove the covering 2, 3 when the cylinder is stationary.
- the bearing bodies 14 of the second exemplary embodiment are material-elastic and have a Shore hardness of preferably 70 Shore ⁇ 10 Shore. They are fully cylindrical. A hollow cylindrical design would also be conceivable. In the hollow cylindrical configuration, instead of an elastic material, a hard material, for example spring steel, could also form the bearing bodies 14, which would then have to be designed to be dimensionally elastic. In a form-elastic configuration, the bearing bodies can in particular each be formed by a spiral spring which, like the bearing bodies 14 of the second exemplary embodiment, are loosely inserted into the inner edges of the channel 6. The counter surfaces 4 and 5 form a four-point bearing for the two bearing bodies 14
- Figure 4 shows a clamping device according to a third exemplary embodiment.
- the reference numerals of the first exemplary embodiment are also used in the third exemplary embodiment, provided the relevant parts of the clamping device perform the same function as 5 corresponding parts of the first exemplary embodiment. Insofar as nothing to the contrary is explained in relation to the third exemplary embodiment, the explanations regarding the first exemplary embodiment should also apply to the third exemplary embodiment.
- the clamping device of the third exemplary embodiment again comprises clamping bodies 10, 0 which, as in the first exemplary embodiment, can be combined to form a shaft or can be arranged individually and axially spaced apart in the channel 6.
- a continuous shaft with the same diameter over its entire length can also form a single clamping body 10, as can also be the case in the first exemplary embodiment and, as mentioned, in the second exemplary embodiment.
- the Klemmkorper 10 or the only Klemmkorper 10 are in fact centered and held between bearing surfaces 4, 5 and 9 ', which without exception cannot be moved relative to the cylinder 1.
- the counter surface 4 and 5 correspond to 1 of those of the first exemplary embodiment.
- the counter surface 9 ' is formed by the filler 8. These bearing surfaces 4, 5 and 9 'cannot change their position relative to one another. It is assumed below as an example that the clamping device comprises a plurality of clamping bodies 10 next to one another which are not connected to one another.
- each of the clamping bodies 10 is elastically flexible on the surface S forming the clamping gap.
- the clamping body 10 can consist entirely of a corresponding material. In the exemplary embodiment, however, each of the clamping bodies 10 is formed as a composite body which consists of a jacket 10a
- the jacket 10a there is elastically resilient material and a core lOi, which the jacket 10a tightly envelops concentrically to the center of gravity axis SP.
- the material of the core lOi is hard and advantageously has a greater density than the elastically resilient material of the jacket 10a, so that the density of the clamping body 10 can be increased compared to an overall elastic design.
- the portion of the clamping force resulting from the centrifugal force can hereby be increased.
- the resilient material of the jacket 10a and the geometry of the channel 6 as well as the diameter of the clamping body 10 measured on the surface S should be such that the clamping bodies 10 can rotate about the center of gravity axis SP when the plate ends are inserted into the clamping gap , However, this is not absolutely necessary.
- clamping devices of the first and third exemplary embodiment that they form the same clamping gap both with the counter surface 4 and with the opposite counter surface 5.
- the plate ends of a flexible covering 2, 3 or of two different, flexible coverings 2, 3 can therefore optionally in the clamping gap formed with the counter surface 4 or inserted into the clamping gap formed with the counter surface 5 and clamped there.
- the effect of the clamping device is independent of the direction of rotation of the cylinder 1.
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- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Clamps And Clips (AREA)
- Rotary Presses (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/526,451 US7478592B2 (en) | 2002-09-26 | 2003-09-24 | Clamping device for clamping a flexible covering on a cylinder of a printing machine |
EP03798029A EP1545881A1 (de) | 2002-09-26 | 2003-09-24 | Klemmvorrichtung zum klemmen einer flexiblen bespannung eines zylinders einer druckmaschine |
JP2004538635A JP2006500249A (ja) | 2002-09-26 | 2003-09-24 | 印刷機の胴の可撓性胴巻きを締め付ける締め付け装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10244945A DE10244945A1 (de) | 2002-09-26 | 2002-09-26 | Vorrichtung zum Befestigen einer flexiblen Bespannung auf Druckzylinder |
DE10244945.7 | 2002-09-26 | ||
DE2002144944 DE10244944B4 (de) | 2002-09-26 | 2002-09-26 | Klemmvorrichtung zum Klemmen einer flexiblen Bespannung eines Zylinders einer Druckmaschine |
DE10244944.9 | 2002-09-26 |
Publications (1)
Publication Number | Publication Date |
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WO2004028808A1 true WO2004028808A1 (de) | 2004-04-08 |
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ID=32043961
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2003/000639 WO2004028808A1 (de) | 2002-09-26 | 2003-09-24 | Klemmvorrichtung zum klemmen einer flexiblen bespannung eines zylinders einer druckmaschine |
PCT/CH2003/000638 WO2004028807A1 (de) | 2002-09-26 | 2003-09-24 | Klemmvorrichtung zum klemmen einer flexiblen bespannung eines zylinders einer druckmaschine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CH2003/000638 WO2004028807A1 (de) | 2002-09-26 | 2003-09-24 | Klemmvorrichtung zum klemmen einer flexiblen bespannung eines zylinders einer druckmaschine |
Country Status (6)
Country | Link |
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US (2) | US20050268803A1 (de) |
EP (2) | EP1545881A1 (de) |
JP (2) | JP2006500248A (de) |
AT (1) | ATE373565T1 (de) |
DE (1) | DE50308239D1 (de) |
WO (2) | WO2004028808A1 (de) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004062598A1 (de) * | 2004-12-24 | 2006-07-06 | Man Roland Druckmaschinen Ag | Vorrichtung für einen Druckzylinder, insbesondere Offsetdruckzylinder für Rollen-Rotationsdruckmaschinen |
DE102006012760A1 (de) * | 2006-03-17 | 2007-09-20 | Man Roland Druckmaschinen Ag | Vorrichtung zum Befestigen einer flexiblen Bespannung auf einen Druckzylinder |
US8281716B2 (en) * | 2008-12-24 | 2012-10-09 | Printing Research, Inc. | Anti-marking jackets comprised of fluoropolymer and methods of using in offset printing |
US8220388B2 (en) * | 2008-12-24 | 2012-07-17 | Printing Research, Inc. | Multiple layer anti-marking jackets and methods of using in offset printing |
US8578853B2 (en) * | 2008-12-24 | 2013-11-12 | Printing Research, Inc. | Anti-marking jackets comprised of attachment structure and methods of using in offset printing |
US9624040B2 (en) * | 2010-08-25 | 2017-04-18 | Hewlett-Packard Development Company, L.P. | Substrate support |
US8424453B2 (en) | 2010-09-01 | 2013-04-23 | Printing Research, Inc. | Apparatus and method for adjusting anti-marking jackets |
US8677899B2 (en) | 2011-01-31 | 2014-03-25 | Printing Research, Inc. | Reversible anti-marking jackets and methods of using |
US9346258B2 (en) | 2012-05-02 | 2016-05-24 | Printing Research, Inc. | Method for cleaning anti-marking jackets |
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EP0856401A2 (de) | 1997-01-30 | 1998-08-05 | MAN Roland Druckmaschinen AG | Vorrichtung zum Befestigen einer flexiblen Bespannung auf einem Druckzylinder |
DE20022737U1 (de) | 2000-12-04 | 2002-03-14 | Koenig & Bauer Ag | Vorrichtung zum Befestigen eines Aufzuges auf einem Zylinder |
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2003
- 2003-09-24 DE DE50308239T patent/DE50308239D1/de not_active Expired - Lifetime
- 2003-09-24 EP EP03798029A patent/EP1545881A1/de not_active Withdrawn
- 2003-09-24 JP JP2004538634A patent/JP2006500248A/ja active Pending
- 2003-09-24 WO PCT/CH2003/000639 patent/WO2004028808A1/de active Application Filing
- 2003-09-24 WO PCT/CH2003/000638 patent/WO2004028807A1/de active IP Right Grant
- 2003-09-24 EP EP03798028A patent/EP1545880B1/de not_active Expired - Lifetime
- 2003-09-24 AT AT03798028T patent/ATE373565T1/de not_active IP Right Cessation
- 2003-09-24 JP JP2004538635A patent/JP2006500249A/ja active Pending
- 2003-09-24 US US10/526,452 patent/US20050268803A1/en not_active Abandoned
- 2003-09-24 US US10/526,451 patent/US7478592B2/en not_active Expired - Fee Related
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US2900904A (en) | 1953-06-08 | 1959-08-25 | Hantscho George | Printing press rollers |
US5010818A (en) | 1988-02-29 | 1991-04-30 | Rockwell International Corporation | Tensionless plate lock-up |
US5123353A (en) | 1991-07-03 | 1992-06-23 | Rockwell International Corporation | Plate lock-up apparatus |
US5485785A (en) | 1992-09-25 | 1996-01-23 | Koenig & Bauer Aktiengesellschaft | Process and device for adjusting the contact pressure of a synthetic-blanket roller in rotary printing presses |
DE4238343A1 (de) | 1992-11-13 | 1994-05-19 | Kocher & Beck Gmbh & Co Rotati | Spannvorrichtung für ein Klischee |
DE19509561A1 (de) | 1995-03-16 | 1996-09-19 | Koenig & Bauer Albert Ag | Vorrichtung zum Klemmen von Platten auf einem Zylinder |
DE19606744A1 (de) * | 1996-02-23 | 1997-08-28 | Roland Man Druckmasch | Vorrichtung zum Befestigen einer biegsamen Druckplatte |
EP0856401A2 (de) | 1997-01-30 | 1998-08-05 | MAN Roland Druckmaschinen AG | Vorrichtung zum Befestigen einer flexiblen Bespannung auf einem Druckzylinder |
DE20022737U1 (de) | 2000-12-04 | 2002-03-14 | Koenig & Bauer Ag | Vorrichtung zum Befestigen eines Aufzuges auf einem Zylinder |
Also Published As
Publication number | Publication date |
---|---|
EP1545880B1 (de) | 2007-09-19 |
EP1545880A1 (de) | 2005-06-29 |
US7478592B2 (en) | 2009-01-20 |
EP1545881A1 (de) | 2005-06-29 |
WO2004028807A1 (de) | 2004-04-08 |
JP2006500249A (ja) | 2006-01-05 |
US20060150845A1 (en) | 2006-07-13 |
ATE373565T1 (de) | 2007-10-15 |
DE50308239D1 (de) | 2007-10-31 |
US20050268803A1 (en) | 2005-12-08 |
JP2006500248A (ja) | 2006-01-05 |
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