Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/22—Means for cooling or heating forme or impression cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
  • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
  • B41F19/06—Printing and embossing between a negative and a positive forme after inking and wiping the negative forme; Printing from an ink band treated with colour or "gold"
  • B41F19/062—Presses of the rotary type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F27/00—Devices for attaching printing elements or formes to supports
  • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
  • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
  • B41F30/02—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to impression cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
  • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
  • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

• the invention relates to a tool cylinder with a sleeve carrier and a replaceable tool sleeve carried by the sleeve carrier and to a stamping or printing machine with such a tool cylinder.
• Tool cylinder with a replaceable tool sleeve which is supported by a sleeve carrier and can be removed from the sleeve carrier are used in embossing or printing machines as working cylinder, which cooperate in the operation of the embossing or printing machine with a counter-pressure element and together with the counter-pressure element Limit working gap in which the actual embossing or printing takes place at a running through the working gap flat material.
• the counter-pressure element may be an impression cylinder or a counter-pressure plate.
• the flat material can be a material web or sheet material.
• the tool sleeve carries the tools provided for the respective process, which are often referred to as clichés in printing presses and embossing machines usually as embossing tools.
• the tools desired for the subsequent process can already be fixed preparatory to the desired positions, so that with the replacement of a tool sleeve a whole group of tools taken as a whole and can be replaced by other tools and / or tools with a different arrangement.
• DE 196 27 034 C2 describes a printing or embossing machine whose printing or embossing has a tool cylinder with replaceable tool sleeve, which cooperates with a counter-pressure cylinder (rotary machine). What is described is an arrangement in which the tool sleeve can be removed from the sleeve carrier and replaced by another tool sleeve without dismantling a side cheek of the machine frame through the side cheek.
• the sleeve carrier has a continuous cylindrical surface on which the cylindrical inner surface of the tool sleeve, which is also cylindrical throughout, rests extensively in the clamped state.
• the provided with a continuous longitudinal slot and thus expandable or contractible tool sleeve is clamped by means of individual, distributed along the longitudinal slot tendons on the cylindrical sleeve carrier. After loosening the tendons, the tool sleeve can be pulled axially from the sleeve carrier.
• EP 1 600 292 B1 describes another device for attaching an exchangeable tool sleeve on the lateral surface of a sleeve carrier of a tool cylinder for a stamping or printing machine.
• the provided with a longitudinal slot tool sleeve is clamped clamped by means of a clamping device on the cylindrical surface of the sleeve carrier.
• the clamping device has an effective over the entire length of the tool sleeve, centrally operable from an end face of the tool cylinder clamping drive.
• WO 2010/124808 A1 describes a printing finishing machine with a base machine and interchangeable finishing modules.
• a finishing module has a tool cylinder with a replaceable tool sleeve, which has a continuous longitudinal slot and can be clamped non-positively on the cylindrical surface of a cylindrical sleeve carrier.
• the tool cylinder should be inexpensive to produce in good quality. It is a further object to provide an embossing machine or printing press with such a tool cylinder.
• the invention provides a tool cylinder having the features of claim 1. Furthermore, an embossing machine or printing press with the features of claim 12 is provided.
• a generic tool cylinder has a sleeve carrier and a releasably attachable to the sleeve carrier, replaceable tool sleeve.
• the sleeve carrier according to the claimed invention comprises a carrier element which carries a first end piece at a first axial end portion and a second end piece at a second axial end portion. The tool sleeve is clamped in the assembled state of the tool cylinder between the end pieces. In one In the area between the end pieces exists between the support member and the tool sleeve, a radial distance.
• both the tool sleeve and the carrier element as relatively simple and inexpensive to manufacture, stable components, since neither the inside of the tool sleeve nor the outside of the support member must be processed very precisely.
• the tool sleeve is not clamped on a correspondingly machined outer surface of the carrier element, but clamped between the end pieces.
• a direct physical contact between the support member and the tool sleeve is not required and preferably not provided, since the tool sleeve is clamped between the end pieces carried by the support member. In the area between the end pieces results between the support member and the tool sleeve, a gap that can be used for other functional elements of the tool cylinder.
• the tool sleeve and the end pieces are matched to one another in such a way that the tool sleeve in the mounted state can be clamped exclusively axially between the end pieces.
• the tool sleeve is loaded in the attachment to the sleeve carrier exclusively in the axial direction, so that deformations can be avoided with a corresponding stable design of the tool sleeve.
• the carrier element is designed as a hollow shaft.
• a hollow shaft can be manufactured cost-effectively from a tubular starting work piece and offers maximum stability and rigidity with low weight.
• the interior of the hollow shaft can be used for the passage of cables, cables or the like.
• the end pieces may be formed as disk-shaped flanges, which can be pushed on axial end portions of the support member in the axial direction and fixed at a suitable position.
• the sleeve wearer can thus have the overall shape of a dumbbell.
• the sleeve carrier is adapted to carry tool sleeves of different inner diameter, wherein an outer diameter of the support member is smaller than an inner diameter of the tool sleeve with the smallest inner diameter and wherein an effective for the clamping diameter of the end pieces is greater than an inner diameter of the tool sleeve with the largest inside diameter.
• outer diameter tool cylinders may be mounted in the range of about 180 mm to 360 mm on the same sleeve carrier without requiring changes to sleeve carriers.
• a drive for the tool cylinder engages the carrier element, so that in this case a torque transmission from the carrier element to the tool sleeve must be ensured.
• a frictional coupling may be sufficient, in preferred embodiments, a positive entrainment is provided.
• the tool sleeve on the axial end faces first coupling structures and the end pieces have at the tool sleeve facing end faces second coupling structures, wherein the first coupling structures and the second coupling structures for positive, rotationally fixed coupling of the tool sleeve are formed between the end pieces.
• the first and the second coupling structures preferably have corresponding projections and / or recesses which extend radially to a rotational axis of the workpiece. - - lapse cylinder. In this way, tool sleeves with different diameters can be coupled, since their first coupling structures can intervene at different radial distances in the corresponding second coupling structures on the end pieces.
• first coupling structures and the second coupling structures are designed as Hirth toothing.
• the Hirth toothing is known to be an axially effective, face-side toothing, which can cause a self-centering of the coupled components.
• frequent tool tube change without wear on the coupled components are also possible if the relative rotational position of the components to be coupled together during assembly is not set completely accurate. This promotes a quick tool change.
• the tool sleeve carrier allows axial clamping of the tool sleeve
• the tool sleeve can be designed as a circumferentially closed tool sleeve.
• Such a non-expandable tool sleeve without longitudinal slot with sufficient wall thickness is a stable component in itself, which can be easily handle the sleeve change without risk of damage.
• the sleeve change can be performed semi-automatically or fully automatically either manually or with the assistance of suitable devices (robots, hoists or the like).
• the tool cylinder is associated with a sleeve replacement auxiliary device, which may have, for example, an insertable into the interior of the tool sleeve sleeve support portion.
• It can be a tube with a set of rollers on which the tool sleeve can roll outward.
• a gripping device for example with a jaw chuck, which acts on the free end face of the tool sleeve, can be provided to facilitate the removal or insertion of the new tool sleeve.
• tool cylinders In many applications, such as in the processing of hot stamping foils, tool cylinders must be brought to a working temperature well above room temperature, which may for example be in the range between 150 ° C and 250 ° C.
• Conventional tool sleeves are often brought to their working temperature by means of heated oil, which is preheated in an external heater to a flow temperature and then conveyed through fluid channels in the tool cylinder.
• the tool cylinder has heating elements of an electrically operable heating device for heating the tool sleeve. The heating energy required for heating the tool sleeve is thus generated directly in the tool cylinder, so that energy losses in supply lines etc. can be avoided.
• the heating device has radiation heating elements which are arranged on the outside of the carrier element in such a manner that they provide the inner side of the tool sleeve facing the carrier element can heat up contactlessly by means of heat radiation.
• Infrared radiators can be provided as radiant heating elements, which have a particularly high heating line efficiency.
• a non-contact radiation heating offers the further advantage that it can work format-independently, so that tool sleeves of different diameters can be heated with one and the same heating device.
• a radiation-absorbing structure and / or a radiation-absorbing coating can be provided on the inside of the tool sleeve.
• the inside can be blackened, for example, by burnishing or applying a paint layer.
• a separate treatment or coating is not necessary, since an unprocessed inner side of a metallic sleeve can already have a sufficient absorptive capacity for heat radiation.
• induction heating of the tool sleeve is also considered in some embodiments, with corresponding induction coils also being able to be attached to the carrier element.
• the heating device is designed to produce over the axial length of the tool sleeve variably adjustable heating power.
• the heating power in the vicinity of the axial ends may be higher than in the central region of the tool sleeve, so that heat losses to the axial ends can be compensated.
• NEN in order to achieve substantially the same operating temperature over the entire axial length of the tool sleeve.
• the replaceable tool sleeve is the only format-dependent component of the tool cylinder, so that when changing the sleeve except the tool sleeve no other components must be replaced by other format-dependent components. For the end user this results u.a. Cost advantages, since with the exception of the tool sleeves no format-dependent components must be maintained. Substantial time advantages can result for the sleeve change, since apart from the tool sleeve no further components have to be removed and replaced by others.
• Tool cylinder of the type described here can be used with appropriate adaptation of the tool-carrying components of the tool sleeve to the respective embossing or printing process in different embossing or printing presses.
• the use in more complex, possibly multi-stage print finishing equipment or in finishing modules for such systems is possible, e.g. in a pressure finishing plant according to WO 2010/124808 A1.
• the invention also relates to a tool cylinder set having a sleeve carrier and a plurality of tool sleeves associated with the sleeve carrier, wherein the sleeve carrier and the tool sleeves are fitted to one another such that tool sleeves of different diameter of the tool cylinder set on the sleeve carrier without constructive change of the sleeve carrier and / or can be attached without use and / or replacement of format-dependent components.
• FIG. 1 shows a schematic view of an embossing unit of a film embossing machine, the embossing unit having an embodiment of a tool cylinder with an exchangeable tool sleeve;
• FIG. 2 shows a view of a sleeve carrier installed in the embossing mill according to an embodiment with the tool sleeve removed;
• Fig. 3 shows a view of the provided with a Hirth serration inner end side of an end piece in another embodiment of a sleeve carrier
• Fig. 4 shows the sleeve carrier of Figure 2 with a relatively large tool sleeve.
• Fig. 5 shows the sleeve carrier of Fig. 2 and 4 with a relatively small tool sleeve.
• Fig. 1 shows a schematic, oblique perspective view with essential components of a stamping mill 100 of a Folien Weggema- machine, which is set up for hot stamping in round-round technology (hot stamping rotary machine).
• hot stamping it is known to guide a material layer to be embossed, for example a printing material sheet or a continuous printing material web, through an embossing gap which is formed between an embossing tool carrier device and a counterpressure element.
• the embossing tool carrier device carries one or more embossing tools which can be heated during hot stamping by means of a heating device.
• At least one embossing film web is guided through the embossing gap in such a way that during a embossing interval it has the same state of movement as the material layer to be embossed.
• the film transport means are not shown for reasons of clarity.
• EP 0 718 099 B1 shows by way of example possibilities for the design of film transport means which can also be used here.
• embossing material located on the embossing foil web for example discrete embossing units, such as images, texts and / or holograms, or a part of a color layer or metal layer to be coated, is transferred to the material layer under the action of pressure and temperature.
• the embossing tool carrier device is formed by a tool cylinder 200, which is rotatably mounted with horizontal axis of rotation 202 in two mutually parallel vertical side cheeks 1 12, 1 14 of the machine frame of the foil embossing machine.
• counter-pressure element is a horizontal axis of rotation below the tool cylinder axially parallel with this arranged impression cylinder 300 which is rotatably supported by means of suitable bearings in the side walls 1 12, 1 14 about its cylinder axis 302.
• the sidewall 1 12 shown on the left is located on the operator side the machine from which, inter alia, the tool sleeve changes can be made.
• the rear side wall 1 14 is located on the drive side, on which the measures provided for the drive of the tool cylinder and the impression cylinder devices are arranged.
• the tool cylinder 200 and the counterpressure cylinder 300 limit the embossing gap 140 in the region of their closest approach.
• the material layer to be embossed is guided through the embossing gap by means of suitable transport means, the material layer over a certain circumferential section on the largely cylindrical outer surface of the impression cylinder and held by them in the correct position.
• the embossing takes place from the outer side of the material layer facing away from the impression cylinder with the aid of embossing tools 222, which are exchangeably mounted on the outer circumference of the tool cylinder 200.
• the embossing film web not shown, which is fed from a likewise not shown foil factory of the foil embossing machine the embossing gap and removed after use runs.
• the tool cylinder 200 is constructed in several parts and comprises as essential components a sleeve carrier 210 mounted in the region of the side cheeks and a replaceable tool sleeve 250 carried by the sleeve carrier.
• the tool cylinder is shown in Fig. 1 in two different positions.
• the tool sleeve 250 is fixedly mounted on the sleeve carrier and is thereby in its working position.
• the tool cylinder assumes the dashed working position in the vicinity of the impression cylinder. This includes the position of the cylinder axis labeled 202.
• the change position shown by solid lines of the tool cylinder is removed from the impression cylinder so upwards raised, that the tool sleeve 250 can be withdrawn or pushed through a circular passage 214 in the side wall 1 12 parallel to the axis of rotation of the tool cylinder. This includes the 202 'marked position of the cylinder axis.
• FIG. 2 shows an oblique perspective view of the support member 210 of FIG. 1 with removed tool sleeve.
• Fig. 4 shows a configuration of the tool cylinder with a variant of a tool sleeve 250-4 with a relatively large diameter and
• Fig. 5 shows a variant of the tool cylinder with a tool sleeve 250-5 with a relatively small diameter, each supported by the same sleeve carrier.
• Fig. 3 shows a view of the sleeve-side end face of an end piece of another embodiment with coupling structures in the form of a Hirth toothing.
• the multi-part tool cylinder 250 has two main components, namely the sleeve carrier 210 and a replaceable tool sleeve 250, which can be removed as intended by the sleeve carrier and is supported by the sleeve carrier in the assembled state.
• the sleeve carrier 210 has a carrier element 220 in the form of a torsionally stiff hollow shaft, which has substantially cylindrical outer contours and an axially continuous inner cavity.
• the support member has a first axial end portion 212 located on the drive side of the tool cylinder and a second axial end portion 214 on the opposite operator side (see Figs. 2, 4 and 5).
• Each of the end sections 212, 214 is machined such that one end piece of the sleeve carrier is axially supported on the associated axial end section. can be pushed and secured against rotation at a defined position.
• the first axial end section 212 In the assembled state of the sleeve carrier or of the tool cylinder, the first axial end section 212 carries a first end piece 230, which remains on the carrier element even when the tool sleeve is removed.
• a second end piece 240 is provided, which is removed from the carrier element 220 for the replacement of the sleeve (see Fig. 1).
• both end pieces 230, 240 are substantially in the form of flat disks or flanges whose outside diameter is slightly larger than the outside diameter of the largest tool sleeve to be supported by the sleeve carrier (compare FIG. During assembly of the tool cylinder, the tool sleeve 250 is axially clamped between the mutually facing end faces of the end pieces 230, 240, so that all clamping forces act substantially parallel to the cylinder axis 202.
• the sleeve carrier 210 is set up so that it can accommodate or carry tool sleeves of different diameters without any structural change on the sleeve carrier.
• the components are dimensioned so that the outer diameter of the support element (including all components carried therefrom, with the exception of the end pieces) is smaller than the inner diameter of those tool sleeve 250-5, which has the smallest inner diameter of all provided for the support member tool sleeves.
• Fig. 4 shows for comparison the tool sleeve 250-4 with the largest provided for the support member diameter
• Fig. 5 shows the tool sleeve 250-5 with the smallest diameter.
• a set or sets of tool sleeves belonging to the sleeve carrier 210 can be arranged between the carrier element or its outside and the tool holder.
• - 1 o - sleeve or the inside of a radial distance A2 (in the smallest tool sleeve 250-5) or A1 (in the largest tool sleeve 250-4) remains.
• a circumferentially closed tube can be used for the production of the tool sleeve, whereby the tool sleeve is easy to manufacture and with a suitable wall thickness in itself can be so stable that easy handling is possible when changing sleeves.
• a gap which can be used for further purposes, which will be explained in connection with the description of the heater.
• the tool sleeve 250 When installed, the tool sleeve 250 should be centered exactly to the axis of rotation of the tool cylinder and secured against rotation with respect to the driven sleeve carrier. This is achieved in preferred embodiments in that the tool sleeve facing the inner end faces of the end pieces and on the thus coming into contact axial end faces of the tool sleeve to mutually corresponding coupling structures are provided which automatically effect a positive, non-rotatable coupling of the tool sleeve with the sleeve carrier and a centering of the tool sleeve with respect to the sleeve carrier during assembly.
• the second coupling structures attached to the inner end faces of the end pieces are formed in that six radially spaced webs 234 distributed uniformly around the circumference are attached to the otherwise flat end faces have a flat rectangular cross-section and can easily taper at least in the direction of the tool sleeve side.
• the associated first coupling structures on the respectively facing end sides of the tool sleeves are formed by correspondingly dimensioned radial recesses or grooves 254 on the end faces of the tool sleeves (see, for example, FIG. 4).
• the tool sleeve When assembling the tool cylinder, the tool sleeve is first brought into a rotational position in which the end-side recesses 254 are aligned with the end-side webs of the end pieces before the end pieces are axially moved towards each other to clamp the tool sleeve. Due to the positive engagement of the webs in the grooves a positive entrainment of the tool sleeve is achieved, at the same time it is centered between the end pieces.
• second coupling structures in the form of a Hirth toothing 334 are provided on the inner end faces of the end pieces.
• the corresponding toothings are provided on the end faces of the associated tool sleeves.
• the tool sleeve does not initially have to be brought exactly into the correct rotational position for assembly. the. Rather, it is sufficient if the tool sleeve is rotated so that the tooth tips of a coupling structures roughly engage in the associated recesses of the opposite coupling structures. If the tool sleeve is clamped between the end pieces, the tool sleeve can then turn slightly if necessary until the correct rotational position is reached. Thereby, the assembly of the tool cylinder can be further simplified. Wear on the edges of the coupling structures can be largely avoided.
• Tool cylinders of the type described here can be used for many applications in the field of printing machines or embossing machines.
• the tool cylinder is used in a foil stamping machine for hot stamping.
• the tool cylinder or its outside must be brought to a working temperature during operation which is significantly above room temperature and may for example be in the range between 150 ° C and 250 ° C.
• the tool cylinder is equipped with heating elements of an electric heater.
• the heating elements are formed by elongate infrared radiators 272, which are arranged uniformly around the circumference of the carrier element 220 and extend substantially over the entire between the mounted end portions lying inner portion of the support member.
• the infrared heaters are individually interchangeable, the change can be carried out very easily with removed tool sleeve.
• the electrical leads to the sockets on the carrier element extend inside the hollow carrier element to the drive side. There are sockets, via which an external electrical power supply can be connected.
• the tool sleeve can be heated by these radiant heating elements from the inside without contact.
• the inner side of the tool sleeve is coated with a coating that absorbs infrared radiation. stratified to achieve a high efficiency of heat transfer from the heater to the tool sleeve.
• the radiation profile of the heating elements 272 in the circumferential direction is chosen so that the power input is so uniform on the inside of a tool sleeve regardless of their diameter that at least on the outside of the tool sleeve uniform heat distribution both in the circumferential direction and over the entire used for the embossing axial Length is present.
• the heating power can be greater than in the middle region.
• one or more temperature sensors may be mounted, the signals of which are fed back to the control of the heater to allow control of the heating power.
• the heating elements can be intermittently switched on and off, for example, to ensure a largely constant outside temperature of the tool cylinder for the duration of use.
• a major advantage of using a radiant heater from the inside of the tool cylinder is that this heater is format independent, i. regardless of the diameter of the tool cylinder can work without structural changes in the heater are required. Since the heat required for the heating in the electric heater is produced directly in the interior of the tool cylinder via the radiant heating elements by converting the electrical energy into radiant energy, energy losses in the supply lines can be kept low. As a result, considerable energy savings are possible compared to conventional solutions with oil heating.
• a quick and convenient sleeve change is achieved by a special bearing concept for the tool cylinder or for the sleeve carrier.
• the sleeve carrier is cantilevered on the drive side, so that it remains in its horizontal position when there is no support for the sleeve change on the opposite side of the operator (cf., for example, Fig. 2).
• a corresponding bearing arrangement for the floating mounting of the sleeve carrier can in principle be constructed as described in WO 2010/124808 A1. The disclosure of this patent application is incorporated herein by reference. Due to the one-sided flying bearing a central pivot bearing on the user-side end of the sleeve carrier is not necessary and not provided.
• the bearing assembly for flying support of the sleeve carrier is mounted on or in a bearing element 1 16, which is arranged in the rear side wall 1 14 and relative to this in the vertical direction or at an acute angle to the vertical direction moves up or down in the direction of the impression cylinder 300 can be.
• the lifting movement can be effected by a hydraulic or otherwise operating adjusting device. Possible embodiments are likewise described in WO 2010/124808.
• the carrier axis is mounted on the drive side and on the operator side in bearing elements 1 18, 1 19, which are each mounted vertically displaceable in the side walls.
• An associated adjustment drive can e.g. work hydraulically or electrically.
• the impression cylinder 300 is also very easy to convert for different processes.
• the impression cylinder can be constructed in several parts and have a sleeve carrier and a worn replaceable impression cylinder sleeve.
• a counter-pressure cylinder can have a similar construction to the tool cylinders described in this application.
• a closed in the circumferential direction impression cylinder sleeve can be clamped axially between end pieces of a sleeve carrier.
• raceways are mounted with precisely machined, cylindrical outer surface. These races cooperate in the working position of the tool cylinder with support rollers, which rotate axially parallel to the races and are mounted on bearing elements, which in turn are mounted on the inner sides of the side cheeks.
• a lower first roller assembly 290 has four lower support rollers 292-1 to 292-4, which are mounted fixed to the frame in pairs on the drive side and the operator side.
• An upper second roller assembly 296 also has four support rollers 298-1 through 298-4 arranged in pairs on the drive side and on the operator side above the sleeve carrier.
• the rollers of the second roller arrangement can be adjusted by means of an adjusting device in the direction of the sleeve carrier or in the opposite direction. This adjustment is used on the one hand when changing sleeves to release the tool sleeve. On the other hand, the adjustment is used for pressure adjustment and print shutdown.
• a pressing device which allows to press the impression cylinder with a precisely adjustable pressure to the guided through the working gap flat material from below. The contact pressure of the impression cylinder can be adjusted during operation if necessary.
• the adjustability of the impression cylinder also allows adjustment of the axial distance between the impression cylinder and the tool cylinder when using tool cylinders or tool sleeves of different diameters.
• roller arrangements of the type described in WO 2010/128808 A1 can also be used.
• a tool cylinder set can be supplied, which comprises a single sleeve carrier (with carrier element and end pieces) and a plurality of adapted tool sleeves of different diameters and / or different rather equipment.
• a tool cylinder set may comprise, for example, 2, 3, 4 or 5 differently sized tool sleeves. It is also possible that a tool cylinder set comprises two or more tool cylinders of the same diameter, but which are equipped with different tools or tool arrangements (clichés or embossing tools).
• the sleeve carrier can be mounted in the machine once and can then remain in the machine even if the format is changed. For a format change then only the replacement of a tool sleeve is required, which is the only format part of a horrzylinder- sets in preferred embodiments.
• Tool cylinder of the type described here can, as shown by way of example, be used in embossing or printing presses that operate the round-round principle, wherein the counter-pressure element is an impression cylinder.
• the use in embossing or printing machines for the round-flat technique is possible.
• the counter-pressure element is an intermittently controllable counter pressure plate.
• Tool cylinders of the type described here can be used in sheet-fed machines which process sheet material (individual sheets) to be printed or to be embossed. It is also possible to equip web-processing machines (web machines or web machines) with tool cylinders of the type described here. For web-processing round-round machines, it may be advantageous if the impression cylinder is also replaceable.
• an internally heated tool cylinder is designed for a hot stamping machine.
• Tool cylinders can be designed for different printing processes or print finishing processes.
• the outside of the tool sleeve may have means for mounting an offset plate, the outside of which may be structured.
• an offset plate By exchanging tool cylinders with different diameters, adaptation to other useful lengths can be carried out quickly and economically.
• a replaceable tool cylinder can carry a paint plate for transferring paint on a web or sheet-shaped sheet.
• a replaceable tool sleeve can also be adapted to carry a rubber plate and installed in a flexographic printing machine.

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• Engineering & Computer Science (AREA)
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• 2012
  • 2012-04-26 DE DE102012206972.0A patent/DE102012206972B4/de active Active
• 2013
  • 2013-04-18 CN CN201380021689.XA patent/CN104379351B/zh active Active
  • 2013-04-18 EP EP13719052.6A patent/EP2841273B1/fr active Active
  • 2013-04-18 ES ES13719052.6T patent/ES2587106T3/es active Active
  • 2013-04-18 WO PCT/EP2013/058102 patent/WO2013160191A1/fr not_active Ceased

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