ES2587106T3 - Tool cylinder with replaceable tool sleeve as well as stamping or printing machine with one such tool cylinder - Google Patents

Abstract

Tool cylinder, especially for application as an interactive working cylinder with a counterpressure element (300) of a printing or printing machine, with a sleeve holder (210) and a tool sleeve (250, 250-4 , 250-5) insurable to the replaceable removable sleeve support, where the sleeve support (210) has a support element (220), which carries in a first axial end section (212) a first end piece (230) and in a second axial end section (214) a second end piece (240), where in the assembled state of the tool cylinder the tool sleeve is fastened between the end pieces (230, 240) and in an area between the end pieces between the support element and the tool sleeve there is a radial distance (A1, A2), characterized by the fact that the tool sleeve (250) has the first coupling structures (254), and the terminal parts (axial parts) 230, 2 40) present the second coupling contours (234, 334) in the opposite front parts of the tool sleeve, where the first and second coupling contours are formed for the rotation-adjusted fit of the tool sleeve between the end pieces, where the first and second coupling structures have projections and / or niches, which extend radially to a rotating shaft (202) of the tool cylinder (250), and that the tool cylinder (250) has heating elements (272) of an electric heating device for heating the tool sleeve, where the heating device has heating elements (272), which are arranged on the external side of the support element (220).

Description

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Tool cylinder with replaceable tool sleeve asf as a stamping or printing machine with one such tool cylinder

Technical field

[0001] The invention relates to a tool cylinder and a tool cylinder assembly with a sleeve holder and a replaceable tool sleeve carried by sleeve support, as well as to a printing or printing machine with such a cylinder of tool.

State of the art

[0002] Tool cylinders with a replaceable tool sleeve, which is carried by a sleeve support and can be removed from the sleeve support, are used in printing or printing machines as a working cylinder, which cooperate in the operation of the printing or printing machine with a counterpressure element and delimit next to the counterpressure element a working groove, in which the printing or printing operation itself takes place in a flat material in operation through the working recess .

The back pressure element may be a back pressure cylinder or a back pressure plate.

The flat material may be a strip of material or sheet material.

The tool sleeve carries the tools provided for the respective process, which are often shown in printing machines as topicals and in printing presses generally as printing tools.

The desired tools can be fixed on a replaceable tool sleeve in preparation for the successive process in the desired positions, so that with the change a tool sleeve takes an entire group of tools as a unit and can be replaced by other tools and / or by tools with a different arrangement.

By means of the application of tool cylinders with replaceable tool sleeves, it is therefore possible to reduce the change times and thereby keep the downtimes of the machine short in the change between different processes.

[0003] DE 196 27 034 C2 describes a printing or stamping machine, whose stamping or printing mechanism has a tool cylinder with a replaceable tool sleeve that cooperates with a counterpressure cylinder (rotation machine).

An arrangement is described in which the tool sleeve can be removed through the sleeve holder without degradation of the side coupling flange of the machine frame through the side coupling flange and can be replaced with another sleeve of tool.

The sleeve support has a continuously cylindrical lateral surface, on which it rests, covering a large area the continuously cylindrical internal surface of the tool sleeve in a state of tension.

The tool sleeve provided with a continuous longitudinal crack and therefore stretchable or contractile is secured with the aid of individual fasteners distributed along the longitudinal groove on the cylindrical sleeve support.

After loosening the fasteners, the tool sleeve can be removed axially from the sleeve holder.

EP 1 600 292 B1 describes another device for fixing a replaceable tool sleeve on the side surface of a sleeve support of a tool cylinder for a printing or printing machine.

The tool sleeve provided with a longitudinal crack is held in tension by a replaceable tension device on the cylindrical lateral surface of the sleeve support.

The tensioning device has a grip unit for the entire length of the tool sleeve effectively operable centrally by a front part of the tool cylinder.

[0004] WO 2010/124808 A1 describes a pressure processing machine with a base machine and replaceable finishing modules.

A finishing module has a tool cylinder with a replaceable tool sleeve, which has a continuous longitudinal crack and can be fastened with force adjustment on the cylindrical lateral surface of a cylindrical sleeve support.

[0005] WO 2006/114534 A2 discloses a tool cylinder or a tool cylinder assembly according to the features of the concept of claims 1 and 12.

[1 0006] EP 1 442 883 A1 describes a fixing cylinder for holding cylindrical stamping forms for stamping rollers including a clamping sleeve for clamping the stamping form as well as a fixing device for fixing the socket clamping on a wave and a tempering device to tighten the clamping sleeve.

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Objective and solution

[0007] It is a task of the invention to provide a tool cylinder of the generic type, where changing the sleeve of the tool holder is faster and simpler than with conventional tool cylinders.

The tool cylinder must be economically produced with good quality.

It is another task to provide a printing machine or stamping machine with such a tool cylinder.

[0008] For the solution of these functions, the invention provides a tool cylinder with the characteristics of claim 1 and a tool cylinder assembly with the characteristics of claim 12.

In addition, a printing machine or stamping machine is provided with the features of claim 10.

[0009] Advantageous improvements are indicated in the dependent claims.

[0010] A generic tool cylinder has a sleeve holder and a removable replaceable tool sleeve attachable to the sleeve holder.

The sleeve support according to the requested invention has a support element, which carries a first end piece in a first axial end section and a second end piece in a second axial end section.

The tool sleeve is fastened in the assembled state of the tool cylinder between the end pieces.

In a zone between the end pieces there is a radial distance between the support element and the tool sleeve.

[0011] With this construction it is possible to interpret both the tool sleeve and the support element as well as stable components manufactured relatively economically and easily, since neither the inner side of the tool sleeve nor the outer side of the support element They must be corrected with special accuracy.

Unlike in known solutions, the tool sleeve does not extend on a correspondingly corrected external surface of the fastened support element, but is held between the end pieces.

A direct contact between the support element and the tool sleeve is not needed and is preferably not provided, since the tool sleeve is held between the support elements carried by the end pieces.

In the area between the end pieces between the support element and the tool sleeve results in a

interstitium, which is used for other operational elements of the tool cylinder.

[0012] Preferably, the tool sleeve and the end pieces are adapted to each other such that the tool sleeve can be held in the exclusively axially mounted state between the end pieces.

In this way, the tool sleeve is loaded with the fixation to the sleeve holder exclusively in

shaft direction, so that with the corresponding stable sizing of the tool sleeve

They can avoid deformations.

[0013] A particularly timely and economical construction results in some embodiments where this support element is formed as a hollow shaft.

A hollow shaft can be economically manufactured in a tubular initial workpiece and offers a minimum dimension to maximum stability or rigidity.

In addition, the interior of the hollow shaft can be used for the introduction of conduits, cables or the like.

[0014] The end pieces can be formed as disk-shaped flanges that can be pushed over axial end portions of the support member in the axial direction and fixed in a suitable position.

The sleeve support can thus take the shape of a weight together.

[0015] The new construction offers considerable advantages in format variation, for example when different print lengths must be manufactured one after another.

Preferably, the sleeve support is adapted to support the inner diameter of different tool sleeves, where the outer diameter of the support element is smaller than the inner diameter of the tool sleeve with the smallest inner diameter and where the effective diameter for the fastening of the terminal pieces it is larger than the inner diameter of the tool sleeve with the larger inner diameter.

Accordingly, different diameters of tool sleeves can be fixed on a sleeve holder and the same.

In some embodiments, tool cylinders with external diameters to the area between approx. 180 mm and 360 mm to the same sleeve support, without variations on it being made on the sleeve support.

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Typically, a drive takes for the tool cylinder in the support element, so that in this case a transmission of the torque of the support element to the tool sleeve must be guaranteed. Although a coupling may be sufficient depending on the force, with continuous embodiments in accordance with the present invention, a continuous joint drag is provided.

For this purpose, the tool sleeve has the first coupling structures in the axial front parts and the terminal parts have the second coupling structures in the front parts opposite the tool sleeve, where the first coupling structures and the second structures of coupling are formed between the terminal parts for the coupling adjusted to the rotation of the tool sleeve.

In this case, the first and second coupling structures have corresponding projections and / or niches, which pass radially to a rotating axis of the tool cylinder.

This is why the tool sleeves are coupled with different diameters, since their first coupling structures fit different radial intervals to the end pieces in the corresponding second coupling structures.

[0016] According to the invention, radially extending projections are provided in the end pieces in the form of nets, which fit with the fastening of the tool cylinder in a correspondingly radial notch in the front parts of the tool cylinder.

An opposite arrangement with protuberances on the front parts of the tool cylinder and radial grooves corresponding to the end pieces is also possible.

[0017] It has been especially advantageous when the first coupling structures and the second coupling structures are configured as a Hirth-gear.

The Hirth-gear is, as is known, an axially effective side-plan gear that can cause self-centering of the components coupled together.

For this reason, frequent tool sleeve changes without wear on the coupled components are also possible when the relative rotation position of the components to be coupled to each other is not adjusted exactly completely during assembly.

In this way a quick tool change is favored.

[0018] Since the sleeve support allows an axial fastening of the tool sleeve, the tool sleeve can be sized as a closed tool sleeve in the perimeter direction.

A said non-expandable tool sleeve without a longitudinal crack is a stable component in itself before sufficient wall thickness, which can be easily handled without risk of deterioration in the change of sleeves.

[0019] The changes of sleeves can be carried out manually or with the help of appropriate devices (robot, lifting tool or the like) partially automatically or fully automatically.

In some embodiments, an auxiliary sleeve change device is associated with the tool cylinders, which may, for example, have a sleeve support section inside the tool sleeve.

It can be a tube with a set of rollers, on which the tool sleeve can roll out.

A prehensile device, eg with a jaw plate, which is in contact with the free front end of the tool sleeve can be provided to facilitate the removal or introduction of the new tool sleeve.

[0020] In numerous applications, for example with the treatment of hot stamping foils, the tool cylinders must be brought to a temperature significantly above the working temperature located at room temperature, which may be for example in the area between 150 ° C and 250 ° C. Conventional tool sleeves are frequently carried by oil heated to their working temperature, which is preheated in an external heater to a flow temperature and then transported through fluid conduits in the tool cylinder.

Although a fluid-bound heating device with tool sleeves according to the requested invention is also possible, it is envisioned that the tool cylinder has an electrically operable heating device for heating the tool sleeve.

The heat energy required for heating the tool sleeve is therefore produced directly in the tool cylinder, so that energy losses in inlet pipes, etc. can be avoided.

Only electrical connections to an externally electric power supply must be provided.

[0021] Particularly advantageous embodiments have been shown in which the heating device has thermal radiation elements that are arranged on the external side of the support element such that they can heat the inner side opposite the support element of the tool sleeve. without contact by thermal radiation.

Infrared heaters, which have an especially high heating efficiency, can be provided as thermal radiation element.

Through the mounting on the external side of the support element, an especially easy change of thermal radiation elements possibly defective with the tool sleeve removed is possible.

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[0022] A non-contact radiant heater provides the additional advantage that it can work independently of the format, so that tool sleeves of different diameters with one and the same heating device can be heated.

[0023] To increase the efficiency of the heating device, a radiation absorbing structure and / or a radiation absorbing coating can be provided on the inner side of the tool sleeve.

The inner side can be blackened for example with the run or by coating a layer of paint.

However, a separate treatment or coating is often not necessary, since an uncorrected inner side of a metal capsule may already have sufficient absorption capacity for heating radiation.

[0024] As an alternative to a radiant heater, some induction heating also takes into account induction heating of the tool sleeve, where the corresponding induction coils can also be conveniently carried in a support element.

[0025] In order to allow the same sufficient heating for the total axial length of the tool sleeve, in some embodiments it is provided that the heating device is sized to produce a thermal capacity variably adjustable by the axial length of the sleeve.

For example, the thermal capacity close to the axial ends may be higher than in the central area of the tool sleeve, so that heat losses at the axial ends can be balanced to achieve essentially the same working temperature for the length Total axial of the tool sleeve.

[0026] By ingenious sizing of the components involved during the assembly of the tool sleeve it is possible in some embodiments that the replaceable tool sleeve is the only component dependent on the format of the tool cylinder, so that in the change of sleeve, with the exception of the tool sleeve, no other component should be replaced by another component depending on the format.

For the end user, for this reason, economic advantages result, since with the exception of the tool sleeves, no component depending on the format must be maintained.

For the change of sleeves there can be considerable time benefits, since with the exception of the tool sleeve no other components should be developed and replaced by another.

[0027] Tool cylinders of the type described herein can be used with corresponding adaptation of the toolholder components of the tool sleeve in the respective printing or printing process in different printing or printing machines.

For example, the use in a printing machine (with or without heating) or in an offset printing machine or in a lacquering machine or in a flexographic printing machine is considered.

It is also possible to use in more complex and possibly multi-phase printing finishing facilities or in processing modules for such installations, eg in a print finishing installation according to WO 2010/124808 A1.

[0028] The invention also relates to a tool cylinder assembly with a sleeve support and several tool sleeves associated with the sleeve support, where the sleeve support and the tool sleeves are adapted in such a way that the Different diameter of the tool sleeves of the tool cylinder assemblies is applicable to the sleeve holder without structural change of the sleeve holder and / or without use and / or application of format dependent components.

[0029] These and other characteristics are deduced not only from the claims but also from the description and drawings, where the individual characteristics respectively by themselves or together will be carried out in the form of alternative combinations with an embodiment of the invention and they can represent advantageous embodiments as well as independently protectable.

Examples of embodiment of the invention are represented in the drawings and are explained in more detail.

Brief description of the drawings

[0030] Fig. 1

Fig. 2

Fig. 3

Fig. 4 Fig. 5

shows a schematic view of a stamping mechanism of a stamping machine, where the stamping mechanism has an embodiment of a tool cylinder with a replaceable tool sleeve;

shows a view of a sleeve support installed in the stamping mechanism according to an embodiment with the tool sleeve removed;

shows a view of the inner front part provided with a gear-Hirth of an end piece in another embodiment of a sleeve support;

shows the sleeve holder of Fig. 2 with a relatively large tool sleeve; and shows the sleeve holder of Fig. 2 and 4 with a relatively small tool sleeve.

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Detailed description of preferred embodiments

[0031] Fig. 1 shows a schematic oblique view with essential components of a stamping mechanism 100 of a stamping machine that is prepared for hot stamping in Rund-Rund technique (hot rotational printing).

In hot stamping, as is known, a layer of material to be stamped, for example a printing material or a band of continuous printing material, is guided by a stamping groove formed between a tool support device for Impression and an element of back pressure.

The printing tool support device carries one or more stamping tools, which can be heated during hot stamping by means of a heating device.

During all the operation of the printing machine at least one band of sheets to be printed is stamped through the printing groove, which during a printing interval has a state of motion equal to that of the layer of material to be printed.

The means of transporting sheets are not represented for reasons of clarity.

EP 0 718 099 B1 shows by way of example possibilities for the configuration of sheet transport means, which can also be used here.

[0032] During the printing interval, a material stamped on the web of sheets to be printed is transmitted through the layer of material, for example discrete consecutive stamped units such as photographs, texts and / or hologram, or a printable part of a layer of paint or layer of metal, due to the effect of temperature and compression.

[0033] In the rotary machine, the printing tool support device is formed by a tool cylinder 200, which is rotatably housed with a horizontal rotating shaft 202 in two vertical side parts 112, 114 of the machine frame of the stamping machine.

The counterpressure element serves as a counterpressure cylinder 300 with a horizontal rotating axis below the tool cylinder positioned parallel to the axis, which by means of an appropriate housing in the lateral parts 112, 114 is rotatably housed around its axis of the cylinder 302.

The side coupling flange 112 shown on the left is located on the user side of the machine, with which, among other things, tool sleeve changes can be made.

The rear side coupling flange 114 is located on the drive side, where the devices provided for driving the tool cylinder and the counterpressure cylinder are arranged.

[0034] When commissioning the printing machine, the tool cylinder 200 and the backpressure cylinder 300 delimit, in the range of its maximum approximation, the printing groove 140.

The layer of stamping material is guided by the appropriate means of transport through the stamping groove, where the layer of material is applied over a certain circumferential part on the substantially cylindrical outer surface of the counterpressure cylinder and is carried out by these are in the correct position and it is maintained in the correct position by this.

The stamping cylinder is made from the external side separated by the back pressure cylinder of the material layer with the aid of the stamping tools 222, which are replaceable to the outer perfometer of the tool cylinder 200.

Between the stamping tool and the layer of material, the strip of sheets to be printed (not shown) which is supplied from a sheet machine is also not shown in more detail from the stamping machine to the fed stamping groove and then removed of its use

[0035] The tool cylinder 200 is constructed of several pieces and comprises as essential components a sleeve support 210 mounted in the area of the side parts and a replaceable tool sleeve 250 carried by the sleeve support.

[0036] The tool cylinder is shown in Fig. 1 in two different positions.

During the entire operation of the machine the tool sleeve 250 is firmly mounted to the sleeve holder and is in its working position.

The tool cylinder takes the working position represented near the back pressure cylinder during the entire operation.

This includes the position of the cylinder shaft marked 202.

In the shifted position represented with continuous lines, the tool cylinder is removed from the counterpressure cylinder upwards such that the tool sleeve 250 can be removed or pushed by a circular passage 214 in the parallel side coupling flange 112 to the rotating axis tool cylinder.

This includes the position of the cylinder shaft marked 202 '.

[0037] Hereinafter some embodiments of tool cylinders with replaceable tool sleeves are explained with the aid of Figs. 1 to 5.

Fig. 2 shows an oblique view of the support element 210 with tool sleeve removed from Fig. 1.

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Fig. 4 shows a configuration of the tool cylinder with a variant of a tool sleeve 2504 with a relatively large diameter and Fig. 5 shows a variant of the tool cylinder 250-5 with a tool sleeve with a relatively small diameter, each made by the same sleeve support.

Fig. 3 shows a view on the front side of the sleeve side of a terminal part of another embodiment with coupling structures in the form of a Hirth-gear.

In the figures of the drawings, the identical or corresponding components are designated respectively by the same reference numbers.

[0038] The tool cylinder 250 has two main components, namely the sleeve holder 210 and a replaceable tool sleeve 250, which can be separated according to its destination from the sleeve holder and is carried in the state mounted by support of sleeve.

The sleeve support 210 has a support element 220 in the form of a torsion-proof hollow shaft, which has the essentially cylindrical outer contour and a continuously inner cavity in the axial direction.

The support element has a first axial end section 212, which is located on the operating side of the tool cylinder, as well as on the user side opposite a second axial end section 214 (see Fig. 2, 4 and 5) .

[0039] Each of the end portions 212, 214 is processed in such a way that each end piece is pushed axially from the sleeve support over the corresponding axial end section and can be set in rotation to a defined position.

The first axial end section 212 carries in the assembled state of the sleeve support or of the tool cylinder 230 a first end piece, which also remains in the support element with the tool sleeve removed.

On the opposite operator side a second terminal piece 240 is provided, which is removed for the exchange of the sleeve from the support member 220 (see Fig. 1).

[0040] Both terminal pieces 230, 240 in the embodiment are formed as flanges or essentially as flat discs, whose external diameter is slightly larger than the external diameter of the size of the tool sleeve carried by the sleeve holder (see Fig. . 4).

During assembly of the tool cylinder, the tool sleeve 250 is axially fastened between the opposite front parts of the end pieces 230, 240, so that all clamping forces act essentially parallel to the axis of the cylinder 202.

[0041] As can be clearly seen with reference to Figs. 4 and 5, the sleeve support 210 is positioned so as to take or support tool sleeves of different diameters without structural change in the sleeve holder or.

For this, the components are sized in such a way that the external diameter of the support element (including all the components carried with the exception of the terminal parts) is smaller than the internal diameter of the tool sleeve 250-5, which has the diameter smaller interior of all tool sleeves provided for the support element.

Fig. 4 shows for comparison the tool sleeve 250-4 with the maximum diameter provided for the support element, while Fig. 5 shows the tool sleeve 250-5 with the smallest diameter.

[0042] In this way this is achieved, that with each tool sleeve of a set or set associated with the sleeve support 210 of tool sleeves between the support element or its outer side and the tool sleeve or its inner side remains a smaller radial distance A2 (with tool sleeve 2505) or A1 (with maximum tool sleeve 250-4).

It follows that each tool sleeve, for which the sleeve support is provided, has no direct contact with the central support element 220 in the assembled state, but rather is indirectly supported through the terminal pieces 230, 240, of the support element.

[0043] There are thus numerous advantages over conventional solutions in which spreadable cracked tool sleeves are used which are fastened on a cylindrical outer surface exactly modeled for a cylindrical core with force adjustment.

[0044] With the present solution a closed tube can be used in the perimeter direction for the manufacture of the tool sleeve, whereby the tool sleeve can be easily manufactured and with appropriate wall thickness can be so stable that in the change of sleeves a simple handling is possible.

Furthermore, it is not necessary to correct the inner side opposite to the support element of the material capsule with high precision in an erosive manner, since the inner side should not serve as a clamping surface.

The inner side can remain unworked, therefore, manufacturing costs are reduced. Between the tool sleeve and the support element there is also an interstitium in the area between the end pieces, which is used for another use and which will be explained in relation to the description of the heating device.

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[0045] Tool sleeve 250 should be centered in the state mounted exactly to the rotating axis of the tool cylinder and secured against rotation against the driven sleeve support.

This is according to the invention achieved with which the tool sleeve of the end pieces and in the proximal axial front parts in contact therewith are provided in the corresponding tool sleeve with respect to each other of the coupling structures. , which automatically causes a rotation-proof coupling in continuous union of the tool sleeve with the sleeve holder as well as a centering of the tool sleeve with the assembly with respect to the sleeve holder.

[0046] In the exemplary embodiment of Figs. 1, 2, 4 and 5, the second coupling structures carried to the inner front parts of the end pieces are formed such that six radially distributed flanges 234 are respectively fixed by the perfometer on an otherwise flat surface, which can essentially have a flat rectangle cross section and can be reduced slightly in any case in the direction of the tool sleeve side.

The corresponding first coupling structures in the respectively opposite front parts of the tool sleeves are formed by niches or grooves 254 in the tool sleeves to the correspondingly radially sized front parts (see eg Fig. 4).

[0047] With the tool cylinder assembly the tool sleeve is first placed in a rotating position, in which the front niches 254 align with the front flanges of the end pieces, before the end pieces are axially moved together to engage the tool sleeve.

Through the tight grip of the flange in the grooves, a continuous joint drag of the tool sleeve is achieved which simultaneously centers between the end pieces.

[0048] In the case of the embodiment shown in Fig. 3 on the inner front parts of the end pieces, second coupling structures are provided respectively in the form of a Hirth-334 gear. The corresponding gears are provided in the parts. front of the corresponding tool sleeves.

Through the radial course of the gear as well as through the shape of the triangular cross-section of the teeth, a self-centering of the tool sleeve is achieved in the clamping between the end pieces.

In addition, with this configuration the tool sleeve must not be brought in the first place exactly to the correct rotation position for assembly.

This is achieved rather when the tool sleeve is rotated in such a way that the tips of the tooth of the coupling structures fit approximately into the associated niches of the opposite coupling structures.

In the fastening of the tool sleeve between the end pieces, the tool sleeve can then be rotated optionally somewhat more, until it has the correct rotation position.

This allows the construction of the tool cylinder can be further simplified.

The wear coupling structures in the ridges can be largely avoided.

[0049] Tool cylinders of the type described herein can be used for many applications in the area of printing machines or printing press.

In the case of the example, the tool cylinders are used with a stamping machine for hot stamping.

For this purpose, the tool cylinders or their external side must be brought into service at a working temperature, which is markedly above room temperature and, for example, can be in the range of 150 ° C to 250 ° C.

For this purpose the tool cylinders are equipped with heating elements of an electric heating device.

The heating elements are formed by extended infrared heaters 272 that are uniformly arranged around the perfometer of the support element 220 and extend essentially over the total of the lying inside section of the support element between the assembled end pieces.

Infrared heaters are individually replaceable, the changes can be made very simple by removing the tool sleeve.

The electrical input conduits to the sockets in the support element run inside the hollow support element to the drive side.

There are sockets, on which an external electrical power supply can be joined.

[0050] The tool sleeve can be heated without contact on these thermal elements of internal radiation.

The inner side of the tool sleeve is coated with a coating for effective absorption of infrared radiation, to achieve high performance of the thermal transmission of the heating device to the tool sleeve.

The emission profile of the heating elements 272 in the perimeter direction is chosen such that the performance is on the inner side of a tool sleeve regardless of its diameter such that it exists in any case on the outer side of the sleeve. of tool a uniform distribution of heat both in the perimeter direction and also over the total axial length used for the stamping procedure.

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In the fields of the axial ends the thermal capacity can be for this purpose greater than in the central zone.

[0051] One or more temperature sensors can be carried in the tool sleeve, whose signals are fed back for the control of the heating device, to allow a regulation of the thermal capacity.

For this reason, the heating elements can be deactivated and activated, for example intermittently and, for the duration of use, largely ensure a consistent outside temperature of the tool cylinder.

[0052] A great advantage of using a radiant heater on the inner side of the tool cylinder is that this heating can operate independently of the format, e.d. regardless of the diameter of the tool cylinder, without requiring constructive variations in the heating device.

[0053] Since with the electric heating device the heat necessary for heating arises directly into the tool cylinder through the thermal radiation elements of the electric energy due to the change in radiation energy, losses can be kept low of energy in the inlet pipes. Compared with conventional solutions with fuel heating, significant energy savings is possible.

[0054] A quick and comfortable sleeve change is favored through a particular storage concept for the tool cylinder or for the sleeve support.

The sleeve support is housed on the drive side, so that it also remains in its horizontal position when a housing is not available for changing sleeves on the opposite user side (see eg Fig. 2).

A corresponding support group for floating mounting of the sleeve support may, in principle, be constructed in this way, as described in WO 2010/124808 A1.

Because of the unilaterally floating housing, a central rotating housing is not necessary at the side end of the sleeve support and is not provided either.

[0055] The support group for the flywheel housing of the sleeve support is fixed on or on a support element 116, which is arranged in the rear lateral coupling flange 114 and in front of it in the vertical direction or can be moved at an angle sharp in the vertical direction upwards or in the direction of the backpressure cylinder 300 downwards.

Through the vertical movement of the support element 116 it is therefore possible to change the distance between the tool cylinder and the counterpressure element and the tool cylinder can be carried for changing sleeves in the upper change position (position 202 ' From the axis).

The lifting movement can be caused with a hydraulic functional accessory device or otherwise.

Possible configurations are also described in WO 2010/124808.

[0056] With the embodiment of Fig. 1, the backpressure cylinders 300 are also vertically adjustable.

For this purpose, the carrier shaft is housed on the drive side or on the user side of the support elements 118,119, which is housed vertically respectively movable on the side walls.

A respective accessory drive can work for example hydraulically or electrically.

[0057] With an embodiment not shown graphically, the backpressure cylinders 300 are also very easily resettable for various processes.

For this purpose, the backpressure cylinder can be mounted in several parts and can have a sleeve support and a replaceable back pressure cylinder carried by that sleeve.

For this purpose, measures that are already known for the construction of interchangeable tool sleeves may be used.

A back pressure cylinder can preferably have a structure similar to that of the tool cylinder described in this application.

For example, a closed back pressure cylinder sleeve in the perimeter direction can be axially fastened between end pieces of a sleeve support.

Thus, the format changes with Rund-Rund machines with working bands will be significantly simpler and cheaper than in conventional machines.

[0058] For the rotating housing of the tool cylinder during the entire operation of the printing machine, particular devices are provided, which are further explained in relation to Figs. 4 and 5.

In the terminal parts 230, 240 raceways are fixed with an exact external surface made cylindrical.

This rolling ring cooperates with the support rollers in the working position of the tool cylinder, which rotates parallel to the axis of the rolling rings and is fixed to support elements, which in turn are mounted on the inner sides of the side parts

[0059] A first configuration of lower rollers 290 has four lower support rollers 292-1 to 292-4, which are attached to the frame in pairs respectively on the drive side and on the user side.

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[0060] A second configuration of upper rollers 296 also has four support rollers 298-1 to 298-4, which are arranged in pairs on the drive side and on the user side above the sleeve support. With help are the rollers of the second roller configuration an accessory device is adjustable to the sleeve support or in the opposite direction.

This accessory option is used on the one hand in the change of sleeves to release the tool sleeve. On the other hand, the adjustment is used for pressure adjustment and pressure adjustment.

A clamping device belongs to the back pressure cylinder, which allows pressing the back pressure cylinder with a precisely adjustable pressure to the flat material driven through the working groove from below.

The back pressure of the back pressure cylinder can be adjusted if necessary during the entire operation.

The back pressure cylinder accessory also allows an adjustment of the wheelbase between the back pressure cylinder and the tool cylinder with a different diameter with the application of tool cylinders or tool sleeves.

[0061] Alternatively, roller arrangements of the type described in WO 2010/128808 A1 may also be used.

[0062] With the aid of tool cylinders of the type described herein, the flexibility of the printing press or of the printing machines can be considerably and economically extended compared to conventional solutions.

For a printing machine or stamping machine a tool cylinder assembly can be provided, comprising a single sleeve support (with end pieces and support element) as well as several tool sleeves adapted to this of different diameter and / or of different endowment.

A tool cylinder assembly may comprise for example 2, 3, 4 or 5 differently sized tool sleeves.

It is also possible that a tool cylinder assembly comprises two or more tool cylinders of the same diameter, which are however equipped with tool arrangements or with different tools (topical or stamping tools).

The sleeve support can be mounted once on the machine and can then also remain with the format changes in the machine.

For a variation of the format, then only the change of a tool sleeve is needed, which in the embodiments according to the invention is the only part of the format of a tool cylinder assembly.

[0063] Tool cylinders of the type described herein may, as shown by way of example, be used with printing or printing machines, which operate according to the Rund-Rund principle, where the counterpressure element is a counterpressure cylinder.

It is also possible to use printing or printing machines for the Rund-Flach technique.

In these, the counterpressure element is an intermittently pilotable counterpressure plate.

Tool cylinders of the type described here can be used with creasing machines that process sheet material by printing or stamping (individual sheets).

It is also possible to equip band-operated machines (band machines or network machines) with tool cylinders of the type described here.

For Rund-Rund machines that run on a belt, it can be advantageous if the backpressure cylinders are equally replaceable.

[0064] In the case of the example a tool cylinder is built internally thermal for a hot stamping machine.

There are also embodiments without integrated heating elements.

Tool cylinders can be sized for various printing procedures or printing finishing process.

In a tool cylinder for an offset printing machine, the external side of the tool sleeve can have devices for holding an offset plate, the external side of which can be structured. By changing tool cylinders with different diameters, an adaptation to other lengths of use can be made economically and quickly.

Instead of an offset plate, a replaceable tool cylinder can transmit a lacquer plate to carry lacquer on a straight or arched flat material.

A replaceable tool sleeve can also be arranged for the transport of a rubber plate and can be incorporated into a flexographic printing machine.

Claims (12)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 65 1. Tool cylinder, especially for application as an interactive work cylinder with a counterpressing element (300) of a printing or printing machine, with a sleeve support (210) and a tool sleeve (250, 250 -4, 250-5) insurable to the removable removable sleeve holder, where The sleeve support (210) has a support element (220), which carries in a first axial final section (212) a first terminal part (230) and in a second axial final section (214) a second terminal part (240 ), where in the assembled state of the tool cylinder the tool sleeve is held between the end pieces (230, 240) and in a zone between the end pieces between the support element and the tool sleeve there is a radial distance (A1 , A2), characterized in that the tool sleeve (250) has the first coupling structures (254) in axial front parts, and the terminal parts (230, 240) have the second coupling contours (234, 334 ) on the opposite front parts of the tool sleeve, where the first and second coupling contours are formed for the tight fitting of the tool sleeve rotation between the end pieces, where the first and the second coupling structures have protrusions and / or niches, which extend radially to a rotating shaft (202) of the tool cylinder (250), and that the tool cylinder (250) has heating elements (272) of a heating device electric for heating the tool sleeve, where the heating device has heating elements (272), which are arranged on the external side of the support element (220). 2. Tool cylinder according to claim 1, characterized in that the first coupling structures and the second coupling structures are configured as Hirth-gear (334). 3. Tool cylinder according to any of the preceding claims, characterized in that the heating elements are designed as thermal radiation elements, where the thermal radiation elements are preferably infrared heaters. 4. Tool cylinder according to any of the preceding claims, characterized in that the tool sleeve has an inner side with a structure and / or coating that absorbs radiation. 5. Tool cylinder according to any of the preceding claims, characterized in that the tool sleeve (250, 250-4, 250-5) and the end pieces (230,240) coordinate with each other in such a way so that the tool sleeve in the assembled state is axially fixable between the end pieces. 6. Tool cylinder according to any of the preceding claims, characterized in that the support element (220) is formed as a hollow shaft and / or where the end pieces (230, 240) are formed as disk-shaped flanges . 7. Tool cylinder according to any of the preceding claims, characterized in that the sleeve support (210) is organized to support tool sleeves of different diameters, where an external diameter of the support element is smaller than a diameter inside of the tool sleeve (250-5) with the smallest inner diameter and an effective diameter for clamping the end pieces (230, 240) is larger than an inside diameter of the tool sleeve (250-4) with the maximum inside diameter. 8. Tool cylinder according to any of the preceding claims, characterized in that The tool sleeve is a closed tool sleeve in the perimeter direction. 9. Printing or printing machine with at least one tool cylinder (250) according to one of the claims 1 to 8. 10. Printing or printing machine according to claim 9, characterized in that it is designed as a printing machine, particularly for hot stamping. 11. Printing or printing machine according to claim 9 or 10, characterized by a backpressure cylinder, which limits a working space together with the tool cylinder, where the backpressure cylinder is mounted with several pieces and has a support of sleeve that carries a counterpressure cylinder sleeve, where preferably a counterpressure cylinder sleeve that is closed in the perimeter direction is axially fastened between the end pieces of a sleeve support. 12. Tool cylinder assembly with a sleeve support (210) and several tool sleeves (250, 2504, 250-5) associated with the sleeve support, where the sleeve support and the tool sleeves adapt to each other in such that the tool sleeves of different diameters of the tool cylinder assemblies are attachable to the sleeve holder without structural change of the sleeve holder and / or unused and / or change format dependent components, where the sleeve holder presents a support element (220) that is designed to support in a first axial terminal section (212) a first terminal part (230) and in a second axial terminal section (214) a second terminal part (240), where the sleeve of tool is fastened, in the assembled state of the tool cylinder, between the end pieces (230, 240), characterized by the fact that the tool sleeve (250) has the first coupling structures (254) in axial front parts and the terminal parts (230, 240) have the second coupling contours (234, 334) in the front parts opposite the sleeve of tool, where the first and second coupling contours are configured for the rotation-adjusted fit of the tool sleeve between the 5 terminal pieces, where the first and second coupling structures have projections and / or radially extending niches to a rotating shaft (202) of the tool cylinder (250), and that the heating elements (272) are fixed on the external side of the support element (220) of an electric heating device for heating the tool sleeve.