EP3723986A1

EP3723986A1 - Pneumatically clamping adapter

Info

Publication number: EP3723986A1
Application number: EP18815720.0A
Authority: EP
Inventors: Uwe Mueller; Markus SCHLAPSCHI
Original assignee: Flint Group Germany GmbH
Current assignee: Flint Group Germany GmbH
Priority date: 2017-12-13
Filing date: 2018-12-13
Publication date: 2020-10-21
Anticipated expiration: 2038-12-13
Also published as: WO2019115699A1; EP3723986B1; US11203197B2; JP7197588B2; CN111491801B; RU2020123014A; ES2895179T3; US20210170743A1; JP2021506625A; CN111491801A

Abstract

The invention relates to an adapter sleeve for adapting the internal diameter of cylindrical hollow cylinders to the external diameter of a cylindrical roller, comprising a sleeve body with (as viewed from the inside to the outside) a deformable base sleeve, possibly an intermediate layer and a top layer. Furthermore, the adapter sleeve comprises a first and a second gas distribution system which are connected to a gas inlet. The first gas distribution system is connected to at least one first gas outlet which opens on an outer shell surface of the adapter sleeve. The second gas distribution system has a cavity which is set up to transmit pressure from the inside to the deformable base sleeve, when loaded with a pressurized gas, in such a way that the internal diameter of the sleeve body is reduced at least in a part region of the adapter sleeve by way of a deformation of the base sleeve. Furthermore, the invention relates to arrangements comprising an adapter sleeve of this type, and to methods for mounting a hollow cylinder on a cylindrical roller with the use of an adapter sleeve of this type.

Description

Pneumatically clamping adapter

The invention relates to an adapter sleeve for adapting the inner diameter of cylindrical hollow cylinders to the outer diameter of a cylindrical roller, comprising a sleeve body with a deformable base sleeve, optionally an intermediate layer and a cover layer, seen from the inside outwards. Furthermore, the invention relates to arrangements comprising such an adapter sleeve and to methods for mounting a hollow cylinder on a cylindrical roller using such an adapter sleeve.

State of the art

In the printing industry, sleeves and adapter sleeves are mostly used in the flexo printing process. In flexographic printing, ink is transferred to a print medium via a printing form by compressive stress. In addition to gravure and gravure printing, it is one of the most important printing processes, especially in the packaging industry. It is characterized by its elastic printing form and is therefore suitable for printing on paper, films and fibrous materials. In addition, it can be used for various color systems, which ensures more universal usability.

The different versions of flexographic printing machines are individually adapted to the respective application. They can be subdivided into the main groups of multi-cylinder and central-cylinder printing machines. By using steel cylinders with a wide range of diameters, individual pressure reports can be achieved. In principle, adapter sleeves for bridging reports are mounted on a steel cylinder. A sleeve is mounted on the adapter sleeve. On the sleeve will be in the So-called pre-assembly applied a printing plate or cliché. This cliché can be mounted on the sleeve in the form of a printing plate or in the form of an "in the round sleeve" (ITR) with an endless print pattern.

Furthermore, it is common in the printing industry, a structure consisting of a drive cylinder, characterized by a driven steel or CFK cylinder (carbon fiber reinforced plastic cylinder), hereinafter referred to as "cylinder", usually on an adapter sleeve and a hollow cylinder, hereinafter also referred to as sleeve, is mounted with mounted thereon printing plates to use. To allow easy mounting, the power cylinder and adapter sleeve are provided with gas passages and gas outlets which create gas pockets between the cylinder and the adapter sleeve and the adapter sleeve and the hollow cylinder which provide for easy sliding. These gaskets can either be conventionally produced via simple openings or significantly optimized over porous areas, as realized in the commercially available rotec® EcoBridge adapter sleeves. Of course, both versions must be connected to the gas supply systems of the adapter sleeve.

There are generally two possibilities of gas supply to the adapter sleeve: through a system-internal gas channel of the drive cylinder or through a separate connection for an external gas supply to the adapter sleeve. In both cases, there is usually a gas channel, or gas distribution system, which is milled as described in EP 2051856 into the intermediate layer. When a gas supply to the adapter sleeve from the cylinder, it is crucial how well this transfer works, as there are no pneumatic connections here but only radial gas passages through the adapter sleeve through. This transfer is usually optimized with a so-called recess, as described in EP 1263592. This makes it possible for the air ducts to be able to use air from a larger area and above all it offers the decisive advantage in handling that the inlet openings of the adapter sleeve do not have to sit perfectly precisely over the outlet openings of the cylinder, but only within one of the recesses area. If now, for example in a printing press, a hollow cylinder is to be replaced, in the case of an internal system gas supply with connection of the gas supply by the drive cylinder but at the same time to the desired for the assembly process gas cushion between the adapter sleeve and sleeve Also creates a gas cushion between the cylinder and adapter sleeve, and it is difficult to deduct only the hollow cylinder, but not the adapter sleeve. If a hollow cylinder to be changed with externally switchable gas supply, the clamping of the adapter sleeve on the cylinder is unaffected and it forms only between adapter sleeve and sleeve a gas cushion. In order to reduce slippage of the adapter sleeve with internal gas routing, so-called "interlocks" are often used. This is a notch with a notch into which a metal pin can be latched onto the surface of the cylinder and can not slip out by a slight twist of the adapter sleeve. A clamping is not generated here. This document is described in document WO 00/44562, which illustrates the lockability of adapter sleeves in order to prevent "an axial relative movement". Improved versions are described in WO 2016/135552 and US 5,819,657. However, such "interlocks" are not usable in a variety of machine types due to their technical specifications. Even if these specifications allow the use, the handling of these systems is still very cumbersome. This is especially evident during the setup process in the printing press. The time pressure during this process often causes damage to the metal pin of the drive cylinder or to the interlock itself. To circumvent these disadvantages, there is hitherto only the possibility of either ensuring the gas supply to the adapter sleeve externally, or in the internal gas supply to the cylinder one integrate second gas circuit with its own outlet openings, which serve only the tightening and removal of the adapter sleeve and depending on the circuit only between the adapter sleeve and cylinder can build up a gas cushion. This version is described, for example, in EP 2 532 523. Such a drive cylinder is significantly more expensive than a cylinder with only a single gas guide.

There are also solutions in which sleeves, or hollow cylinders, can be moved on the surface of the drive cylinder or the adapter sleeve, when they are acted upon from the outside of the cover layer radially through the sleeve through with gas. Such a product is described, for example, in WO 2010/096133. However, it does not contain any internal gas guides or an additional mechanism of the clamping, which is stimulated by the gas flowing through, in order to fix an adapter sleeve on the drive cylinder, especially if it is passed through radially by air. A clamping effect exists here only when the gas flow is switched off. In addition to the application in the printing machines themselves, there is with pre-assembly another central application of adapter sleeves. In the pre-assembly, sleeves are prepared for printing, ie the printing plates are fixed on the sleeve, usually with double-sided adhesive tape, also referred to as tape. In order to be able to mount the corresponding sleeves accurately in the receiving device of the preassembly unit, suitable adapter sleeves are or are required. These must, on the one hand, have a good clamping to the base cylinder of the assembly unit and also ensure a snug fit of the sleeve. Furthermore, they should be able to build both a gas cushion between the adapter sleeve and cylinder and also between the adapter sleeve and sleeve. As with the described setup process in the printing press, it is generally not desirable here as well for the adapter sleeve to be released during the sleeve changing operation, but this can almost always be the case with internal gas routing without an interlock.

An adapter sleeve and a hollow cylinder with the pressure plates mounted thereon are usually used on a central cylinder. To allow easy mounting, the central cylinder and the adapter sleeve are provided with gas ducts and gas outlets which create gas pockets between the cylinder and the adapter sleeve and the adapter sleeve and the hollow cylinder, which provide for easy sliding. If now a hollow cylinder to be replaced, however, gas cushions are again generated in both spaces and it is difficult only the hollow cylinder, but not deduct the adapter sleeve. An object of the invention can be seen to provide an easily disassembled or mountable adapter sleeve which still jams even when Gasbeaufschla- and only allows removal of the hollow cylinder or the sleeve.

Disclosure of the invention

An adapter sleeve for adapting the inside diameter of cylindrical hollow cylinders to the outside diameter of a cylindrical roller is proposed, comprising a sleeve body with a deformable base sleeve, optionally at least one intermediate layer and a cover layer, seen from the inside out, the adapter sleeve having at least one gas inlet, which communicates with a first gas distribution system is, and wherein the adapter sleeve has at least one connected to the first gas distribution system first gas outlet, which opens on an outer circumferential surface of the adapter sleeve. The adapter sleeve further comprises a second gas distribution system, wherein the second gas distribution system is in communication with the gas inlet and the second gas distribution system has a cavity which is adapted, when pressurized gas is applied, to transfer pressure from inside to the deformable base sleeve from that at least in a partial region of the adapter sleeve, the inner diameter of the sleeve body is reduced by a deformation of the base sleeve.

The adapter sleeve has a sleeve body which essentially corresponds to those of the adapter sleeves known from the prior art. The sleeve body has a tube shape or a shape of a hollow circular cylinder and preferably comprises a deformable base sleeve, seen from the inside outwards, optionally an intermediate layer and a cover layer. In particular, the base sleeve, the optional intermediate layer and the cover layer essentially correspond to those of the adapter sleeves of the prior art.

The deformable base sleeve can be constructed from one or more layers, preferably it consists of a layer. The deformable base sleeve may consist of a flexible ceramic layer, metal layer, eg of aluminum, nickel and comparable alloys or of a reinforced or unreinforced plastic or combinations thereof. When metals, alloys and ceramics are used, they are preferably in the form of a partial layer, in particular in the form of a perforated plate, a wire mesh or combinations of several of these materials. Preferably, reinforced plastics are used which are reinforced with fibers, fillers or combinations thereof. As fibers are in particular metal, glass and / or carbon fibers in question, but it can also be used plastic fibers. Fillers may be incorporated in the form of inorganic or organic particles. Among the inorganic fillers, carbonates, silicates, sulfates or oxides may be used, such as calcium carbonate or calcium sulfate, bentonites, titanium dioxides, silicon oxides, quartz or combinations thereof. The reinforcement preferably takes place by means of fibers, more preferably by means of glass and / or carbon fibers. These can be in the form of tissues, flow, different Layers of majority parallel fibers or combinations thereof are used.

As plastics or plastic mixtures are those in question, which have a glass transition temperature above 50 ° C, preferably above 70 ° C, more preferably above 80 ° C. In order to make the production of the base sleeve simple, preferably thermally and / or UV-curable mixtures are used with which the fibers are impregnated in such a way that they are embedded in the plastic matrix. Preferred thermally curable mixtures are epoxides, unsaturated polyester-styrene mixtures, polyesters, polyethers and polyurethanes. Preference is given to using epoxides and unsaturated polyester-styrene mixtures.

As an optional intermediate layer, both hard and deformable materials are used, which can preferably be deformed and then return to their original shape, ie have a restoring capacity. For this purpose, various polymers such as natural and synthetic rubbers, elastomers and foams can be used. The foams may have open or closed pores or combinations thereof. Preferably, closed pores are used. The foams are made from polymers such as polyethylene, polypropylene, polystyrene, polyester and polyurethanes. The foam used is preferably a polyurethane foam.

For the cover layer hard materials, preferably metals, alloys, ceramics, glasses, polymers such as polyethers, polyesters, polyurethanes, epoxies and generally fiber-reinforced or foamed plastics and combinations thereof are used. The surface of the cover layer can be made rough or smooth, preferably it is as smooth as possible to allow easy sliding of hollow cylinders. The cover layer is preferably dimensionally stable or hard.

The materials of the layers are preferably chosen so that they are so impermeable to gases that a pressure build-up is possible and the pressure over a period of several days or hours can be maintained. In some cases, it may also be necessary for the layers to be electrically conductive to equip (see for example EP 1346846 A1, EP 1144200 A1, EP 2051856 A1 EP 1263592 A1) to avoid electrostatic charges.

The thickness of the base layer is in the range of 0.3 mm to 8 mm, preferably in the range of 0.5 mm to 5 mm, particularly preferably in the range of 2.9 mm to 4.5 mm. The thickness of the optional intermediate layer is in the range of 0.2 mm to 125 mm, preferably in the range of 10 mm to 100 mm. The thickness of the cover layer is in the range of 0.5 mm to 10 mm, preferably in the range of 1 mm to 3 mm, The wall thickness of the adapter sleeve is in the range of 8 mm to 150 mm, preferably in the range of 15 to 75 mm , The wall thickness of the adapter sleeve is the sum of the wall thicknesses of all layers of the adapter sleeve.

The inner diameter of the adapter sleeve according to the invention is in the range of 10 mm to 1000 mm, preferably in the range of 40 mm to 630 mm, particularly preferably in the range of 85 mm to 275 mm. The outer diameter of the adapter sleeve according to the invention is in the range of 20 mm to 2000 mm, preferably in the range of 100 mm to 700 mm, particularly preferably in the range of 125 mm to 300 mm.

The adapter sleeve according to the invention has at least one gas inlet, which communicates with a first gas distribution system.

The one or more gas inlets are connected in the adapter sleeve according to the invention with a first gas distribution system which distributes the gas in the adapter sleeve. The first gas distribution system may consist of channels or hoses that run in or between the base and top layers, in one or more intermediate layers, between different layers, or combinations thereof. Preferably, the first gas distribution system is in the form of one or more channels introduced into the surface or core of a layer, such as by drilling, milling, engraving, machining, cutting, or combinations thereof. In the adapter sleeve according to the invention, the first gas distribution system is connected to a first gas outlet, which opens on an outer jacket surface and thus on the surface of the cover layer. The first gas outlet may be in the form of one or more round, slot-shaped or angular openings in the cover layer or as a porous material or a material with a high proportion of openings. The first gas outlet is located along the longitudinal Direction of the adapter sleeve seen preferably in the first third of one side of the adapter sleeve and this side is preferably the operator facing side.

The adapter sleeve according to the invention further comprises a second gas distribution system, wherein the second gas distribution system communicates with the gas inlet and the second gas distribution system has a cavity, which is arranged, when exposed to a pressurized gas from the inside of such pressure on the deformable base sleeve to be transferred, that at least in a partial region of the adapter sleeve, the inner diameter of the sleeve body is reduced by a deformation of the base sleeve. The second gas distribution system may consist of channels or hoses that run in or between the base and top layers, in one or more intermediate layers, between different layers, or combinations thereof. Preferably, the second gas distribution system is in the form of one or more channels introduced into the surface or core of a layer, such as by drilling, milling, engraving, machining, cutting, or combinations thereof. The cavity can be designed so that it forms part of the gas distribution system or is formed in the form of one or more additional cavities. The additional cavity may be disposed in or between the base and top layers, in one or more intermediate layers, between different layers, or combinations thereof. Preferably, it is in the vicinity of the base layer. The additional cavity can be produced, for example, by drilling, milling, engraving, machining, cutting or combinations thereof.

In one embodiment of the adapter sleeve, a gas connection is arranged as a gas inlet on an end face of the adapter sleeve. In this case, the adapter sleeve is supplied with gas in such a way that it is also possible to slide it onto a cylinder which does not provide gas for forming a gas cushion. The gas connection can be designed in the form of a quick coupling, a gas olive, a pipe, a pipe in connection with a hose with clamp. Preferably, the gas connection is a quick coupling.

The adapter sleeve preferably comprises a third gas distribution system, which communicates with the gas inlet, and the adapter sleeve further has at least one second gas outlet, which communicates with the third gas outlet. distribution system is connected and opens on an inner circumferential surface of the adapter sleeve on the surface of the deformable base sleeve.

The third gas distribution system may consist of channels or hoses that run in or between the base and top layers, in one or more intermediate layers, between different layers, or combinations thereof. Preferably, the third gas distribution system is in the form of one or more channels introduced into the surface or core of a layer, such as by drilling, milling, engraving, machining, cutting, or combinations thereof.

The at least one second gas outlet can be designed in the form of one or more round, slot-shaped or angular openings in the base layer of the base sleeve. The information and descriptions given above for the first gas outlet apply to the arrangement, number and design of the openings of the second gas outlet.

In a further embodiment of the adapter sleeve, the at least one gas inlet is arranged on the inside of the flush body and is arranged for connection to gas outlets on the outer lateral surface of the cylindrical roller. With this arrangement, it is possible to gas, which is provided by the cylindrical roller, for example a printing form cylinder, on which the adapter sleeve is applied, reaches the surface of the adapter sleeve and can be used for mounting one or more further hollow cylinder.

The gas inlet attached to the base layer of the sleeve body serves to admit gas into the adapter sleeve, which is provided by a cylinder on which the adapter sleeve is to be pushed. The gas inlet may be in the form of one or more round, slot-shaped or angular openings in the cover layer or as a porous material or as a material with a high proportion of openings.

The gas inlet is located along the longitudinal direction of the adapter sleeve, preferably in the first third of one side of the adapter sleeve, and this side is preferably the side facing an operator. The adapter sleeve preferably comprises a gas control unit which is set up to release and / or block the flow of gas from the gas inlet to the first gas distribution system, to the second gas distribution system and / or to the third gas distribution system.

Through different settings of the gas control unit, it is possible to direct the gas targeted into none, one, two or all three gas distribution systems and thus to produce different functions. If the gas is not routed to any gas distribution system, it is possible to slide the adapter sleeve onto a cylinder with its own gas supply. If the gas is passed only to the first gas distribution system, a mounting of another Flohlzylinders on the adapter sleeve is possible because the gas passed through creates a gas cushion between adapter sleeve and hollow cylinder. If the gas is passed only to the second gas distribution system, the adapter sleeve is clamped on an existing cylinder, for example a printing plate cylinder. If the gas is only directed to the third gas distribution system, the adapter sleeve can be pushed onto a cylinder with the resulting gas cushion, in particular on a cylinder without its own gas supply. When the gas is directed to the first and second gas distribution systems, a hollow cylinder can be displaced by the formed gas cushion on the adapter sleeve without the adapter sleeve is displaced because it is clamped on the cylinder. Although a simultaneous introduction of gas into the second and third gas distribution system is possible, it has no advantage since the effects of the clamping and of the gas cushioning disturb or cancel each other out. The same applies to the case of the simultaneous gas supply of all three distribution systems, except that now a displacement of a Flohlzylinders on the adapter sleeve would be possible.

The gas control unit may consist of one or more components and be both integrated into the adapter sleeve and arranged outside the adapter sleeve. Preferably, the gas control unit is arranged within the adapter sleeve.

The gas control unit is preferably selected from the group consisting of a two-way cock, a three-way cock, at least one switch, at least one valve, a Flohlschraube and combinations of at least two of these units selected. The gas control unit is used for example between the gas inlet and the first, second and / or third gas distribution system. Furthermore, it is possible, for example, that the first gas distribution system is connected to the gas inlet without the interposition of a gas control unit and the gas control unit is arranged in a connection between the first gas distribution system and the second gas distribution system and / or the third gas distribution system.

The components of the gas control unit can be controlled individually or in combination, wherein the control can be done manually or automatically or semi-automatically via a control device. Preferably, the gas control unit is set up and configured such that the control of the gas control unit takes place from outside the adapter sleeve. For example, valves or switches can be switched electronically or manually. In the case of an electronic circuit, this and any necessary energy supply in the form of batteries or accumulators can be integrated into the adapter sleeve. Another possibility is a wireless communication of the control device with the components of the gas control unit.

Preferably, the at least one first gas outlet and / or the at least one second gas outlet is arranged to distribute compressed air over the length of the adapter sleeve or to leave it adjacent to an end face of the adapter sleeve.

The first and / or the second gas outlet are preferably installed at one end of the adapter sleeve. This ensures that the air cushion produced reaches up to the end faces of a printing form cylinder and easy mounting of an adapter sleeve on a printing form cylinder or a pressure sleeve on an adapter sleeve is possible. The distance of the first and the second gas outlet from the end of the adapter sleeve is preferably in the range of 1 mm to 100 mm, particularly preferably in the range of 5 mm to 50 mm.

Preferably, the at least one first gas outlet and / or the at least one second gas outlet is designed as circumferentially arranged bores or peripherally arranged gas-permeable porous regions.

If the gas inlet of the adapter sleeve is arranged on the inside of the sleeve body, then this can also be used as one or more openings or as a or a plurality of gas-permeable porous regions be configured. Examples of these are circumferentially arranged bores or peripherally arranged gas-permeable porous regions.

In order to make a region porous and gas-permeable, both porous materials and materials with a high proportion of openings per area can be used. Such materials may have screen-like, rake-like, lamellar or slot-shaped openings.

The first gas outlet, the second gas outlet and / or the gas inlet may be in the form of one or more round, slot-shaped or angular openings or bores in the cover layer or in the base layer. However, the openings may also be formed in the form of porous regions which are inserted in the cover layer or in the base layer and optionally in the intermediate layer and comprise porous materials. By porous materials are meant materials in which the pores occupy a volume fraction in the range of 1% and 50%, more preferably in the range of 5 to 40% and most preferably in a range of 10% to 30% of the material. Here, the percentage is based on the volume fraction of the pores in the volume of the entire porous material. The pore size is in the range from 1 μm to 500 μm, preferably from 2 μm to 300 μm, preferably from 5 μm to 100 μm and very particularly preferably from 10 μm to 50 μm. The pores are preferably distributed homogeneously over the volume of the porous material. Examples of such materials are foamed materials with open cells or sintered porous materials.

The permeability is determined, for example, in accordance with ISO 4022: 1987, wherein for a given volume flow at constant pressure and temperature the pressure loss is measured after passing through the porous material with a given filter area and the flowability coefficients a for laminar flow and β for turbulent flow are determined. The porous materials according to the invention preferably have a value for a greater than 0.01 * 10 ¹² m ² and for ß a value greater than 0.01 * 10 ⁷ m. Particularly preferably, the porous materials have a value of a greater than 0.05 * 10 ¹² m ² and for ß a value greater than 0.1 ^* 10 ⁷ m. Preferably, the porous region is divided into a porous region or several porous regions. In this case, a porous region is preferably configured as a circumferential ring or a porous region comprises a plurality of partial regions, which are designed and arranged in the form of a circumferential ring that runs around in the circumferential direction. The width of a ring is preferably in the range of 1 cm to 20 cm, and more preferably in the range of 5 cm to 15 cm. Alternatively or additionally, at least one porous region may be provided in the form of an axially extending strip. The use of porous materials offers the advantages of using less gas and reducing noise pollution.

As a material with a high proportion of openings, a material is considered which has at least one opening per 500 mm ² area. The material with a high proportion of openings preferably has at least one opening per 200 mm ² area. The diameter of the openings is in the range of 0.1 mm to 2 mm, preferably in the range of 0.2 mm to 1, 5 mm, more preferably in the range of 0.3 mm to 1 mm. The number of openings is greater than 1, preferably greater than 4 and particularly preferably greater than 6. The openings may be regularly or irregularly distributed over the circumference and be arranged in one or more rows.

The material with a high proportion of openings has on its outer surface, for example, an area fraction of the openings in the range of 0.3% to 90%. The surface preferably has an area fraction of the openings of 1% to 90%. In this case, an area fraction of the openings in the range of 5% to 80% is particularly preferred, and an area ratio of the openings in the range of 10% to 70% is very particularly preferred. For example, the area ratio of the openings is in the range of 0.3% to 50%. The openings are designed as continuous or branched openings or channels and communicate with the gas supply. The diameter of the openings or the width of the channels or slots is in the range of 100 pm to 5 mm, preferably in the range of 500 pm to 2 mm.

Preferably, the cavity extends substantially over the length of the adapter sleeve or the cavity is limited to a region adjacent to one of the end faces. The cavity may be designed so that it forms part of the gas distribution system, in the form of an end of a Channel of the gas distribution system, or in the form of one or more additional cavities is formed. The or the ends of the channels of the second gas distribution system or the or the additional cavities may be arranged at one or more arbitrary locations in the adapter sleeve. They can be evenly or non-uniformly distributed over the length of the adapter sleeve or arranged in one or both first thirds of the adapter sleeve. The ends of the channels or the cavities may be arranged circumferentially. The cavity may also be formed as a circumferential channel, which has the advantage that only a gas-supplying connection is necessary. Preferably, the ends or the or the cavities seen in the longitudinal direction of the adapter sleeve are arranged in the first third of the adapter sleeve, which lies opposite the gas inlet. In other words, the ends of the channels or the cavity or cavities are arranged in the first third of the adapter sleeve on the side facing away from the operator.

A further aspect of the invention relates to an arrangement comprising a cylindrical roller and at least one adapter sleeve received on the roller and described above. In such an arrangement, the cylindrical roller may be any cylindrical roller that can rotate and accommodate more hollow cylinders. Such arrangements occur mainly in printing and finishing or processing processes. Arrangements according to the invention can be used in particular in arrangements for intaglio, high-pressure and offset printing processes.

Another aspect of the invention relates to an arrangement comprising a cylindrical roller, at least one adapter sleeve received on the roller as described above and at least one hollow cylinder received on the adapter sleeve. In such an arrangement, the cylindrical roller may be any cylindrical roller which can rotate and receive other hollow cylinders, the adapter sleeve serving to adjust the diameters of the cylindrical roller and the hollow cylinder. Such arrangements occur mainly in printing and finishing or processing processes. Arrangements according to the invention can be used in particular in arrangements for intaglio, high-pressure and offset printing processes. Another aspect of the invention is to provide a method of assembling a wood cylinder on a cylindrical roll using an adapter sleeve previously described. The method comprises the steps of: a) providing a cylindrical roller, providing one of the previously described adapter sleeves and providing a hollow cylinder, b) positioning the adapter sleeve on the cylindrical roller,

c) applying pressure to the adapter sleeve such that the gas enters a cavity of the adapter sleeve, wherein the gas in the cavity transfers pressure to a deformable base sleeve of the adapter sleeve in such a way that the inner diameter of the adapter sleeve is at least in a partial region of the adapter sleeve Adapter sleeve is reduced by a deformation of the base sleeve and thereby clamps the adapter sleeve on the cylindrical roller,

d) applying a pressurized gas to the adapter sleeve such that the gas flows out via a first gas distribution system of the adapter sleeve via at least a first gas outlet on the outer lateral surface of the adapter sleeve and forms a gas cushion, e) applying and positioning the wooden cylinder on the Adapter sleeve f) Switching off the gas supply, wherein optionally an overpressure in the cavity of the adapter sleeve can be maintained, is included in a further embodiment.

Another aspect of the invention is to provide a method of disassembling a hollow cylinder from a cylindrical roll, wherein the wood cylinder has been assembled using one of the described adapter sleeves. The method comprises the following steps: a) providing an arrangement comprising a roll equipped with a gas supply, one of the previously described adapter sleeves and at least one hollow cylinder,

b) acting on the adapter sleeve with a pressurized gas such that the gas passes into a cavity of the adapter sleeve, wherein the gas in the cavity such pressure on a deformable base sleeve of the adapter sleeve transmits, that at least in a portion of the adapter sleeve of the inner diameter of Adapter sleeve by a deformation of Base sleeve is reduced and thereby clamps the adapter sleeve on the cylindrical roller,

c) acting on the adapter sleeve with a gas, so that the gas flows out via a first gas distribution system of the adapter sleeve and via at least a first gas outlet on the outer lateral surface of the adapter sleeve and forms a gas cushion,

d) pulling off the hollow cylinder.

Preferably, the method of assembly or disassembly additionally comprises providing an adapter sleeve having at least one gas inlet on the inside of the sleeve body, the cylindrical roller being equipped with a gas distribution such that the cylindrical roller is for positioning the adapter sleeve on the cylindrical roller provides a gas cushion, and after positioning the adapter sleeve on the cylindrical roller, the gas for supplying the adapter sleeve is provided by the cylindrical roller. This method is mainly used when the cylindrical roller has its own gas supply. In this case, no third gas distribution system and no second gas outlet opening are provided in the adapter casing according to the invention.

Preferably, the method for assembly or disassembly additionally comprises providing an adapter sleeve with at least one gas connection arranged as a gas inlet on the end face of the adapter sleeve, the adapter sleeve being supplied with a gas via the gas connection of the adapter sleeve for applying the adapter sleeve to the cylindrical roller is that the gas exiting from at least a second gas outlet, which opens on an inner circumferential surface of the adapter sleeve, and forms a gas cushion, which allows mounting or dismounting of the adapter sleeve on the cylindrical roller. This method is mainly used when the cylindrical roller does not have its own gas supply. In this case, a third gas distribution system and a second gas outlet opening are provided in the adapter casing according to the invention.

As gas all gases can be used, preferably compressed air is used. It may be useful to use inert gases (for example, nitrogen, argon, helium, or C02) to avoid fire or explosion, or to prevent unwanted reactions (eg, oxidation) of products or components prevent or reduce. Most of the gases are used under pressure to produce a corresponding gas cushion and the pressures vary depending on the application of 1 bar to 30 bar, preferably 4 to 8 bar.

Brief description of the figures It shows:

1 shows a cross section of the adapter sleeve without intermediate layer,

2 shows a cross section of the adapter sleeve with intermediate layer,

3 shows a longitudinal section of the adapter sleeve with first and second gas distribution system, FIG.

FIG. 4 shows a longitudinal section of the adapter sleeve with first, second and third gas distribution system,

5 shows a longitudinal section of the adapter sleeve with first and second gas distribution system and an additional Flohlraum at the end of the second gas distribution system and

6 shows a longitudinal section of the adapter sleeve with first, second and third gas distribution system and an additional Flohlraum at the end of the second gas distribution system

FIG. 1 shows a cross section of a first embodiment of an adapter sleeve 10. The adapter sleeve 10 of FIG. 1 has a sleeve body with a deformable base layer 3 and a cover layer 5. The shape of the sleeve body essentially corresponds to a hollow circular cylinder. An outer circumferential surface 30 of the adapter sleeve 10 is formed by the outer side of the cover layer 5 and an inner circumferential surface 32 of the adapter sleeve 10 is formed by the outer surface of the base layer 3.

The adapter sleeve 10 further comprises a gas inlet 6 arranged on the inside of the sleeve body. In the embodiment shown in FIG. 1, the gas inlet 6 is designed as an opening in the deformable base layer 3, preferably as a radially encircling ring of openings.

A first gas distribution system 1 of the adapter sleeve 10 comprises a plurality of channels 20, 22 which in the deformable base layer 3 and / or the cover layer 5 or run in between. A channel 20 extending in the radial direction in the flexible base layer 3 and the cover layer 5 connects the gas inlet 6 with the first gas distribution system 1.

Via a radially extending channel 20, the gas distribution system 1 is connected to a first gas outlet 7, which opens on the surface of the cover layer 5 and thus on the outside of the adapter sleeve 10. The adapter sleeve 10 has further, not visible in the illustration of Figure 1 first gas outlets 7, which can be supplied via further channels through the first gas distribution system 1 with gas. Gas flowing out of the first gas outlets 7 can be used to create an air cushion which allows easy mounting of a hollow cylinder on the adapter sleeve 10.

The adapter sleeve 10 also has a second gas distribution system 2, of which in the view of Figure 1, only one extending in the axial direction of the channel 22 is visible. The second gas distribution system 2 is connected via connection channels 24 and a gas control unit 8 to the first gas distribution system 1 in connection. Starting from the gas inlet 6, gas can be guided via the first gas distribution system 1 and the gas control unit 8 to the second gas distribution system 2. Via the gas control unit 8, a gas flow to the second gas distribution system 2 can be enabled or disabled.

FIG. 2 shows a cross section of a second embodiment of an adapter sleeve 10. The adapter sleeve 10 of FIG. 2 has a sleeve body with a deformable base layer 3, an intermediate layer 4 and a cover layer 5 as seen from the inside. The shape of the sleeve body essentially corresponds to a hollow circular cylinder.

The adapter sleeve 10 further comprises a gas inlet 6 arranged on the inside of the sleeve body. The gas inlet 6 is designed as an opening in the deformable base layer 3, as described with reference to the first embodiment of FIG. 1, preferably as a radially encircling ring of openings.

A first gas distribution system 1 comprises a plurality of channels 20, 22 which in the deformable base layer 3, the intermediate layer 4 and / or the cover layer fifth or between the layers. The first gas distribution system 1 is connected to the first gas inlet 6 via a channel 20 extending in the radial direction in the flexible base layer 3 and the intermediate layer 4.

Via a channel 20 extending in the radial direction in the intermediate layer 4 and the cover layer 5, the gas distribution system 1 is connected to a first gas outlet 7, which opens on the surface of the cover layer 5 and thus on the outside of the adapter sleeve 10. The adapter sleeve 10 has further, not visible in the representation of Figure 2 first gas outlets 7, which can be supplied via further channels through the first gas distribution system 1 with gas.

The adapter sleeve 10 also has a second gas distribution system 2, of which in the view of Figure 2 only one extending in the axial direction of the channel 22 is visible. The second gas distribution system 2 is connected via connection channels 24 and a gas control unit 8 with the first gas distribution system 1 in connection. Starting from the gas inlet 6, gas can be conducted via the first gas distribution system 1 and the gas control unit 8 to the second gas distribution system 2. Via the gas control unit 8, a gas flow to the second gas distribution system 2 can be enabled or disabled.

Figure 3 shows schematically a longitudinal section of the adapter sleeve 10 of the second embodiment.

As already described with reference to FIG. 2, the adapter sleeve 10 has a flush body with a deformable base layer 3, an intermediate layer 4 and a cover layer 5. The outer circumferential surface 30 of the adapter sleeve 10 is formed by the outer side of the cover layer 5 and the inner circumferential surface 32 of the adapter sleeve 10 is formed by the outer surface of the base layer 3.

The gas inlet 6 is designed in the form of an opening in the deformable base layer 3, preferably as a radially encircling ring of openings. A radially extending channel 20 extends in the deformable base layer 3 and the intermediate layer 4 and connects the gas inlet 6 with the first gas distribution system. 1 The first gas distribution system 1 comprises a plurality of channels 20, 22, of which only one in the radial direction to the first gas outlet 7 extending channel 20 is visible in FIG. The adapter sleeve 10 has further, not visible in the illustration of Figure 3 first gas outlets 7, which can be supplied via further channels through the first gas distribution system 1 with gas and is preferably designed as a circumferential ring of openings. Gas flowing out of the first gas outlets 7 can be used to create an air cushion which allows easy mounting of a hollow cylinder on the adapter sleeve 10.

The adapter sleeve 10 also has a second gas distribution system 2. The second gas distribution system 2 is connected to the first gas distribution system 1 via the gas control unit 8 and has a channel 22 extending in the axial direction and a radial channel 20 extending in the radial direction in the direction of the deformable base layer 3.

The radially extending channel 20 of the second gas distribution system 2 constitutes a cavity 12 which adjoins the deformable base layer 3. When pressurized gas is supplied via the gas inlet 6 and the gas control unit 8 is supplied to the second gas distribution system 2, pressure can be built up in the cavity 12 by gas flowing in the cavity 12. The located in the cavity 12 and pressurized gas exerts a force on the deformable base sleeve 3, which causes a deformation of the base sleeve 3 and thus a reduction of the inner diameter of the adapter sleeve 10. If the adapter sleeve 10 is mounted on a cylinder, then the reduction in the inner diameter causes a jamming of the adapter sleeve 10 on the cylinder.

FIG. 4 shows schematically a longitudinal section of the adapter sleeve 10 of a third embodiment.

As already described with reference to FIG. 2, the adapter sleeve 10 has a sleeve body with a deformable base layer 3, an intermediate layer 4 and a cover layer 5. In contrast to the second embodiment of Figures 2 and 3, the adapter sleeve 10 of the third embodiment on one of the end faces as a gas inlet 6 to a gas port 13. For example, a compressed air line can be connected to the adapter sleeve 10 via the gas connection 13. The gas connection 13 communicates with the gas control unit 8. The gas control unit 8 can enable or block a gas flow from the gas connection 13 to the first gas distribution system 1 and the second gas distribution system 2 and a third gas distribution system 11.

The first gas distribution system 1 comprises a plurality of channels 20, 22, of which only one in the radial direction to the first gas outlet 7 extending channel 20 is visible in Figure 4. The adapter sleeve 10 has further, not visible in the representation of Figure 4 first gas outlets 7, which can be supplied via further channels through the first gas distribution system 1 with gas. Gas flowing out of the first gas outlets 7 can be used to create an air cushion which allows easy mounting of a hollow cylinder on the adapter sleeve 10. Via the gas control unit 8, the air cushion can be influenced by controlling the gas flow.

The second gas distribution system has a channel 22 running in the axial direction and a radial channel 20 extending in the radial direction in the direction of the deformable base layer 3. The radially extending channel 20 of the second gas distribution system 2 constitutes a cavity 12 adjacent to the deformable base layer 3 adjacent. If pressurized gas is supplied via the gas connection 13 and the gas control unit 8 to the second gas distribution system 2, then pressure can be built up in the cavity 12 by gas flowing in the cavity 12. The gas in the cavity 12 and under pressure exerts a force on the deformable base sleeve 3, which causes a deformation of the base sleeve 3 and thus a reduction in the inside diameter of the adapter sleeve 10. If the adapter sleeve 10 is mounted on a cylinder, then the reduction in the inner diameter causes a jamming of the adapter sleeve 10 on the cylinder.

The adapter sleeve 10 of the third embodiment shown in Figure 4, a third gas distribution system 11, of which in the illustration of Figure 4 extending in the axial direction of a channel 22 and a radially extending channel 20 are visible. The radially extending channel 20 connects the third gas distribution system 11 with a second gas outlet 9, which is designed on the inner side of the adapter sleeve 10 as an opening in the deformable base view 3. The adapter sleeve 10 has further second gas outlets 9, which in the Figure 4 are not visible. If a gas is supplied to the third gas distribution system 11 by corresponding activation of the gas control unit 8, this gas is passed to the second gas outlets 9 and flows out there. By the gas flowing out of the second gas outlets 9 gas, an air cushion on the inside of the adapter sleeve 10 is generated, which allows easy mounting of the adapter sleeve 10 to a cylinder.

FIG. 5 shows schematically a longitudinal section of the adapter sleeve 10 of a fourth embodiment. The adapter sleeve 10 shown in Figure 5 corresponds to the described with reference to Figures 2 and 3 adapter sleeve 10 of the second embodiment, wherein between the deformable base layer 3 and the mouth of a radially extending channel 20 of the second gas distribution system 2, the cavity 12 as a radially encircling hollowed out region 26 in the intermediate layer 4 is configured. The excavated area 26 makes it possible to exert pressure on the deformable base layer 3 over a larger area, so that a reduction of the inner diameter of the adapter sleeve 10 takes place over a larger area.

FIG. 6 shows schematically a longitudinal section of the adapter sleeve 10 of a fifth embodiment. The adapter sleeve 10 shown in Figure 6 corresponds to the described with reference to Figure 4 adapter sleeve 10 of the third embodiment, wherein between the deformable base layer 3 and the mouth of a radially extending channel 20 of the second gas distribution system 2, the cavity 12 as a radially encircling hollowed out area 26 is configured in the intermediate layer 4. The excavated area 26 makes it possible to exert pressure on the deformable base layer 3 over a larger area, so that a reduction of the inner diameter of the adapter sleeve 10 takes place over a larger area.

LIST OF REFERENCE NUMBERS

1 first gas distribution system

2 second gas distribution system 3 deformable base sleeve

4 interlayer

5 topcoat

6 gas inlet

7 first gas outlet

8 gas control unit

9 second gas outlet

10 adapter sleeve

11 third gas distribution system

12 optional cavity

13 gas connection

20 channel

22 channel in the longitudinal direction

24 connecting channel

26 hollowed out area

30 outer surface

32 inner lateral surface

Claims

claims

1. Adapter sleeve (10) for adapting the inner diameter of cylindrical hollow cylinders to the outer diameter of a cylindrical roller, comprising a sleeve body with a deformable base sleeve (3) seen from the inside out, optionally at least one intermediate layer (4) and a cover layer (5), in which

the adapter sleeve has at least one gas inlet (6) which is in communication with a first gas distribution system (1),

and wherein the adapter sleeve (10) has at least one first gas outlet (7) connected to the first gas distribution system (1), which opens on an outer jacket surface (30) of the adapter sleeve (10), characterized in that

the adapter sleeve (10) further comprises a second gas distribution system (2), the second gas distribution system (2) communicating with the gas inlet (6) and the second gas distribution system (2) having a cavity (12) adapted to be acted upon with a pressurized gas to transfer from inside such a pressure on the deformable base sleeve (3), that at least in a partial region of the adapter sleeve (10), the inner diameter of the sleeve body is reduced by a deformation of the base sleeve (3).

2. Adapter sleeve (10) according to claim 1, characterized in that on one end face of the adapter sleeve (10) a gas connection (13) as a gas inlet (6) is arranged.

3. Adapter sleeve (10) according to claim 2, characterized in that the adapter sleeve (10) comprises a third gas distribution system (11) which is in communication with the gas inlet (6), and the adapter sleeve (10) further comprises at least one second gas outlet (10). 9) which is connected to the third gas distribution system (11) and opens on an inner circumferential surface (32) of the adapter sleeve (10) on the surface of the deformable base sleeve (3).

4. Adapter sleeve (10) according to claim 1, characterized in that the at least one gas inlet (6) on the inside of the sleeve body (12) is arranged and adapted for connection to gas outlets on the outer circumferential surface of the cylindrical roller.

5. Adapter sleeve (10) according to any one of claims 1 to 4, characterized in that the adapter sleeve (10) comprises a gas control unit (8) which is adapted, the flow of gas from the gas inlet (6) to the first gas distribution system (1 ), to the second gas distribution system (2) and / or the third gas distribution system (11) to release and / or block.

6. adapter sleeve (10) according to claim 5, characterized in that the gas control unit (8) is selected from the group consisting of a two-way cock, a three-way cock, at least one switch, at least one valve, a hollow screw and combinations of at least two of these units.

7. Adapter sleeve (10) according to any one of claims 1 to 6, characterized in that the at least one first gas outlet (7) and / or the at least one second gas outlet (9) is arranged compressed air over the length of the adapter sleeve (10 ) or adjacent to an end face of the adapter sleeve (10).

8. Adapter sleeve (10) according to any one of claims 1 to 7, characterized in that the at least one first gas outlet (7) and / or the at least one second gas outlet (9) is designed as circumferentially arranged holes or circumferentially arranged porous areas ,

9. Adapter sleeve (10) according to any one of claims 1 to 8, characterized in that the cavity (12) extends substantially over the length of the adapter sleeve (10) or is limited to a region adjacent to one of the end faces.

10. An arrangement comprising a cylindrical roller and at least one accommodated on the roller adapter sleeve (10) according to one of claims 1 to 9.

11. Arrangement comprising a cylindrical roller, at least one accommodated on the roller adapter sleeve (10) according to one of claims 1 to 9 and at least one on the adapter sleeve (10) received hollow cylinder.

A method of assembling a wood cylinder on a cylindrical roll using an adapter sleeve (10) according to any one of claims 1 to 9, comprising the steps of:

a) providing a cylindrical roller, providing an adapter sleeve (10) and providing a hollow cylinder,

b) positioning the adapter sleeve (10) on the cylindrical roller; c) pressurizing the adapter sleeve (10) with a pressurized gas such that the gas passes into a cavity (12) of the adapter sleeve (10), the gas in the cavity (12) transmits such pressure to a deformable base sleeve (3) of the adapter sleeve (10) that at least in a partial region of the adapter sleeve (10) the inner diameter of the adapter sleeve (10) is reduced by a deformation of the base sleeve (3) and thereby the adapter sleeve (10) clamps on the cylindrical roller,

d) acting on the adapter sleeve (10) with a pressurized gas such that the gas via a first gas distribution system (1) of the adapter sleeve (10) via at least one first gas outlet (7) on the outer surface of the adapter sleeve (10) flows out and forming a gas cushion,

e) application and positioning of the wooden cylinder on the adapter sleeve (10)

f) switching off the gas supply, wherein optionally an overpressure in the cavity (12) of the adapter sleeve (10) can be maintained.

A method of disassembling a hollow cylinder from a cylindrical roller mounted using an adapter sleeve (10), comprising the steps of: a) providing an arrangement comprising a roller equipped with a gas supply, an adapter sleeve (10) according to one of claims 1 to 9 and at least one hollow cylinder,

b) acting on the adapter sleeve (10) with a pressurized gas such that the gas passes into a cavity (12) of the adapter sleeve (10), wherein the gas in the cavity (12) such pressure on a deformable base sleeve (3) Adapter sleeve (10) transmits that at least in a partial region of the adapter sleeve (10) the inner diameter of the adapter sleeve (10) is reduced by a deformation of the base sleeve (3) and thereby the adapter sleeve (10) is clamped on the cylindrical roller,

c) acting on the adapter sleeve (10) with a gas, so that the gas via a first gas distribution system (1) of the adapter sleeve (10) and at least a first gas outlet (7) on the outer surface of the adapter sleeve (10) flows out and a gas cushion forms,

d) pulling off the hollow cylinder.

14. The method according to claim 12 or 13, characterized in that an adapter sleeve (10) is provided according to one of claims 4 to 9 and the cylindrical roller is equipped with a gas distribution, so that the cylindrical roller for positioning the adapter sleeve (10) providing a gas cushion to the cylindrical roller, and after positioning the adapter sleeve (10) on the cylindrical roller, the gas is provided for impinging the adapter sleeve (10) by the cylindrical roller.

15. The method according to claim 12 or 13, characterized in that an adapter sleeve (10) according to one of claims 2, 3 or 5 to 9 is provided, wherein for applying the adapter sleeve (10) on the cylindrical roller, the adapter sleeve (10) via a gas is supplied to a gas connection (13) of the adapter sleeve (10) in such a way that the gas exits from at least one second gas outlet (9) which opens on an inner lateral surface of the adapter sleeve (10) and forms a gas cushion, which forms allows assembly or disassembly of the adapter sleeve (10) on the cylindrical roller.