Device for supplying fluid into a rotatably mounted cylinder

Abstract

The invention relates to a device (1) for temporarily supplying a fluid into a rotatably mounted cylinder (2), wherein the cylinder (2) comprises at least one supply opening (4) for supplying the fluid on a lateral surface (3) and / or on an end face, and a supply area (5) around each of the at least one supply opening (4), wherein the device (1) comprises at least one adapter (10), the adapter (10) comprising at least one supply line (11) for the fluid and at least one through-opening (12) for the fluid. The object of the present invention is to provide a simple, economical, low-maintenance, and reliable solution for the temporary supply of a fluid into a non-rotating cylinder (2).The problem is solved by the adapter (10) having a closed projection (13) around the at least one through-opening (12), which is designed such that each projection (13) can be brought into contact with the supply area (5) uniformly over its entire extent, and wherein the at least one adapter (10) can be brought into operative contact with the supply area (5) of the outer surface (3) or end face of the cylinder (2) for supplying the fluid via the at least one projection (13), wherein the supply area (5) comprises a rubber-elastic surface and wherein the projection (13) around the through-opening (12) is made of a dimensionally stable and / or rubber-elastic material.

Description

The invention relates to a device for temporarily supplying a fluid into a rotatably mounted cylinder, wherein the cylinder comprises at least one supply opening for supplying the fluid on a lateral surface and / or on an end side and a supply region around each of the at least one supply opening, wherein the device comprises at least one adapter, wherein the adapter comprises at least one supply line for the fluid and at least one passage opening for the fluid.In installations and machines with rotating rollers or rotating cylinders, there is a requirement to supply a fluid, such as compressed air, to at least one cylinder at least temporarily when the installation is at a standstill in order to activate or carry out various working steps or setup processes. This may be necessary with the example of a printing press with rotatably mounted printing cylinders, for example, in order to change a sleeve arranged on the transfer cylinder or in order, for example, in the case of a forme cylinder, to change the sleeve-shaped printing forme or the sleeve-shaped carrier of a printing forme.Solutions are known from the prior art for this purpose which comprise a manual temporary fastening of a fluid supply to the stationary cylinder for carrying out a working or setup step. Since such a manual fastening of a fluid supply is usually very time-consuming, however, and both the speed and the quality of the execution depend on the skill of the person to be executed, solutions are also known from the prior art with which the fluid is supplied via a rotary inlet permanently installed on the cylinder, since no additional working steps are required for this purpose and the fluid can be supplied immediately if necessary.However, such solutions with rotary inserts are relatively expensive and expensive, and moreover such rotary inserts are subject to wear, since they are designed to ensure sealing even during rotary movement, although this benefit is not required for temporary fluid supply in the event of a standstill of the cylinder.It is therefore the object of the present invention to find a simple, economically favorable, low-maintenance and at the same time reliable solution for the temporary supply of a fluid into a non-rotating cylinder.The object is achieved by a device according to claim 1. The device according to the invention is characterized in that the adapter has a closed elevation around the at least one passage opening, which elevation is designed such that each elevation can be brought into contact uniformly with the feed region over its entire extent, and wherein the at least one adapter for feeding the fluid can be brought with the at least one elevation into operative connection with the feed region of the lateral surface and / or the end face of the cylinder, wherein the feed region comprises a rubber-elastic surface and wherein the elevation around the passage opening consists of a dimensionally stable and / or rubber-elastic material.Such a device has the advantage that the supply of the fluid, such as compressed air, can be realized with it without manual interventions and also without the use of expensive and maintenance-intensive rotary inserts, which enables favorable production costs and minimal maintenance effort.According to one embodiment of the invention, the cylinder comprises a sleeve in the region of the feed opening with at least one opening at least partially overlapping the at least one feed opening, and wherein the sleeve comprises the feed region.Such a solution has the advantage of a cost-effective solution and a very low maintenance outlay, since a feed region having a rubber-elastic surface does not have to be applied directly to the cylinder, which is relatively complicated, on the one hand, since adhering or even vulcanizing the rubber-elastic surface of the feed region directly on the cylinder requires a high outlay, in particular if it is taken into account that such elastomers do not necessarily have permanently sufficient elastic properties and replacement of the rubber-elastic surface of the feed region would be very complicated in this case, whereas such a sleeve can be replaced as a cost-effective wear part with little outlay.According to a further embodiment of the invention, the rotatably mounted cylinder can be brought into a defined supply position for supplying and / or discharging the fluid, and in that the at least one adapter can be adjusted to the at least one supply region for supplying the fluid into the rotatably mounted cylinder.Such a solution offers the advantage of maximum operational reliability of the corresponding working steps for which a fluid supply is required. Such a solution can be implemented in a correspondingly simple manner by detecting the cylinder position via the drive control.According to a further embodiment of the invention, the at least one adapter can be brought into operative connection with the feed region by means of an adjusting device. Such an adjusting device can be designed, for example, as a pneumatic cylinder or a hydraulic cylinder or as an electromotive adjusting device.Such a configuration has the advantage that it is ensured, on the one hand, that the cylinder rotates only when the adapter is not operatively connected to the feed region, or is operatively connected to the feed region on the lateral surface or on an end face of the cylinder only when the cylinder is not rotating. This can be done, for example, by using limit switches which detect the position of the adjusting device and / or of the adapter. Furthermore, this embodiment has the advantage that the activation of the fluid supply can take place fully automatically and without any operator intervention.According to a further embodiment of the invention, the at least one adapter can be brought into a plurality of positions in the rotational direction and / or in the axial direction of the cylinder.Such a configuration has the advantage that the working or setup steps, in which a fluid supply is required, can be carried out in different positions of the cylinder, if this is necessary or expedient. For example, a first setup process can take place in a first position of the cylinder and a second setup process can take place in a second position of the cylinder, since for example the first setup process requires a different position of the cylinder than the second setup process.According to a further embodiment of the invention, a plurality of adapters is arranged for each feed opening of the cylinder in a radial and / or axial extension. This embodiment also has the advantage that the working or setup steps, in which a fluid supply is required, can be carried out in different positions of the cylinder, if this is necessary or expedient. For example, a first setup process can take place in a first position of the cylinder and a second setup process can take place in a second position of the cylinder, since for example the first setup process requires a different position of the cylinder than the second setup process.Preferred developments of the invention are evident from the dependent claims and the following description. Various exemplary embodiments of the invention are explained in more detail with reference to the drawings, without being limited thereto. The following shows: FIG. 1 shows a cylinder with a fluid supply as known from the prior art FIG. 2 shows an exemplary illustration of a device according to the invention with a rotatably mounted cylinder, an adjustable adapter and an adjusting device FIG. 3 shows an exemplary embodiment of a feed region FIG. 4 shows an exemplary embodiment of a feed region in section FIG. 5 shows an embodiment of a spatially limited feed region attached to a sleeve FIG. 6 shows an embodiment of a circumferential feed region mounted on a sleeve FIG. 7 shows an exemplary embodiment of an adapter with elevation around the passage opening FIG. 8 shows an exemplary embodiment of an adapter in sectionFIG. 1 shows a cylinder 2 which is illustrated by way of example and is equipped by means of two bearings 7 attached to cylinder journals 8, with the result that the cylinder 2 is rotatably mounted, as is sufficiently known from the prior art. Such cylinders 2 are used, for example, in substrate-processing machines, such as, for example, paper machines or printing machines. In printing presses, such cylinders 2 are known, for example, as paper guide rollers, draw rollers, forme cylinders, transfer cylinders, impression cylinders or as ink feed rollers.If at least the temporary supply of a fluid such as compressed air or a liquid is required, rotary inserts 20 are known from the prior art, which are fastened to a front end of a corresponding cylinder 2. Such rotary inserts 20 are connected to a rotatable end on the rotatably mounted cylinder 2, the other part of the rotary insert 20 is fixed and thus non-rotatably mounted, so that the fluid can be supplied to the cylinder 2 with this fixed-mounted part of a rotary insert 20 which thus does not rotate during rotation of the cylinder 2. Such rotary inserts 20 can thus ensure a fluid supply even when the cylinder 2 is rotating and are therefore correspondingly complicated and therefore cost-intensive in terms of their construction on account of the required ensuring of a tightness even when the cylinder 2 is rotating.FIG. 2 shows a device 1 which makes it possible to temporarily supply a fluid into a rotatably mounted cylinder 2 when the cylinder 2 is at a standstill. FIG. 2 shows, analogously to FIG. 1, a cylinder 2 which is illustrated by way of example and is rotatably mounted by means of two bearings 7 attached to cylinder journals 8, for which reason the same exemplary uses described under FIG. 1 are possible for the cylinder 2. Although not shown in the drawing, the present invention can also be used for cylinders 2 which have at least one bearing 7 on only one side and are thus mounted in a cantilevered manner.The device 1 comprises an adapter 10, which comprises a supply line 11 for the fluid, which is shown symbolically as a file in FIG. 2. This feed line 11 can be designed, for example, as a pipeline or as a hose line for feeding the fluid. The adapter 10 further comprises at least one passage opening 12 for the fluid, through which the fluid can be conducted through the adapter 10. Although not shown in FIG. 2, it is optionally possible for the adapter 10 to simultaneously comprise a valve for controlling the inflow of the fluid, such as a shut-off valve and / or a quantity control valve or a pressure control valve. Such a valve for controlling the inflow of the fluid can, however, also be arranged in or before the supply line 11 of the fluid.In order that the fluid can be guided into or through the cylinder 2, the cylinder 2 comprises at least one feed opening 4 on a lateral surface 3 and / or on an end face for feeding the fluid into the cylinder 2. for the purpose of forwarding the fluid to the required location, the cylinder 2 comprises channels located in the interior, not shown in FIG. 2, such as longitudinal bores, for example, for which reason the feed opening 4 for the fluid can be at a location of the cylinder 2 that is geometrically clearly spaced from the actual location of use of the fluid. In the exemplary illustration shown in FIG. 2, the feed opening 4 is located on the lateral surface 3 of a cylinder journal 8, but it is also possible to arrange the feed opening 4 on any desired lateral surface 3 or end face of the cylinder 2, provided that this feed opening 4 is spatially accessible and does not influence a functional surface of the cylinder 2.The region which is located on the lateral surface 3 or on an end face around the feed opening 4 is referred to below as the feed region 5, since this region is relevant in terms of the embodiment for the present invention in an extent of approximately 1 to 20 mm around the feed opening 4. Although the feed region 5 is illustrated in FIG. 2 by way of example as a circular surface around the feed opening 4 configured by way of example as a circular bore, the feed region 5 and the feed opening 4 can in principle assume any desired contours.Although in FIG. 2 only one feed opening 4 shown as a circular bore is shown by way of example on the lateral surface 3 of the cylinder journal 8, it is also possible for at least one further bore used as feed opening 4 to be arranged offset in the radial direction and / or in the axial direction, for which reason the term feed opening 4 can also be used quite generally for a plurality of bores spaced apart from one another to be spatially limited for feeding the fluid.It is pointed out that in the arrangement shown in FIG. 2, the cylinder 2 is not in the position in which the fluid can be supplied to the cylinder 2 via the adapter 10 in order to be able to show the supply opening 4 and the supply region 5 in the drawing, especially as in the embodiment shown in FIG. 2, the adapter 10 is not operatively connected in the sense of a mechanical contact with the supply region 5.The adapter 10 comprises around the at least one passage opening 12 one or respectively one closed elevation 13 which is designed for example as a continuous raised sausage around the passage opening 12, wherein the at least one elevation 13 is designed with regard to the geometry such that preferably each elevation 13, but at least one elevation 13, can be brought into contact uniformly with the feed region 5 over its entire extent, which means that the at least one or each elevation 13 rests uniformly on the feed region 5 when the adapter 10 is placed against the feed region 5 or is pressed into the feed region 5 at least when it is pressed against the feed region 5 such that a substantially tight connection is produced between the at least one elevation 13 and the feed region 5 such that the fluid, such as for example compressed air, can be fed to the cylinder 2 in a sufficient quantity and under sufficient pressure. Further details regarding the configuration of the adapter 10 and the elevation 13 can be seen from the description of the figures relating to FIG. 10.Although FIG. 2 shows a state in which the adapter 10 and the elevation 13 of the adapter 10 are spaced apart from the closest lateral surface 3, it is necessary for at least temporary feeding of the fluid for the adapter 10 comprising the at least one elevation 13 to be brought operatively connected to the lateral surface 3 and / or the end face of the cylinder 2 and / or the at least one feed region 5, which means that the adapter 10 or the at least one elevation 13 is brought into mechanical contact with the feed region 5, such that the at least one elevation 13 is pressed onto or into the feed region 5.In order to ensure a sufficient seal between the adapter 10 and the feed region 5 for feeding the fluid into the cylinder 2, the feed region 5 comprises a rubber-elastic surface, while the at least one elevation 13 consists of a dimensionally stable material, such as a thermoplastic, a thermosetting plastic, a metal or a composite material, and / or of a rubber-elastic material. The term "dimensionally stable material" means here that the material is stable in such a required contact pressure force of the at least one elevation 13 against the feed region 5 in such a way that there is no plastic deformation of the at least one elevation 13.As an alternative to this, it is also possible for the feed region 5 to have a hard surface which is dimensionally stable or dimensionally stable, and for the region around the at least one passage opening 12 and / or the at least one elevation 13 to consist of a rubber-elastic material. In contrast to the aforementioned alternative, this configuration has the disadvantage that the rubber-elastic material only has to be applied or attached to the adapter 10 in a relatively small area, is technically complicated.For supplying the fluid via the supply line 11 and the adapter 10 and the passage opening 12 into the cylinder 2, the rotatably mounted cylinder 2 is to be brought into a defined supply position, wherein the supply position is that position of the cylinder 2 at which, when the adapter 10 is placed against the lateral surface 3 or end face of the cylinder 2, the at least one elevation 13 of the adapter 10 strikes the supply region 5 of the cylinder 2 in such a way that, on the one hand, a corresponding seal is achieved and, on the other hand, the at least one passage opening 12 of the adapter 10 overlaps at least partially with the at least one supply opening 4. With respect to the example shown in FIG. 2, this means that the cylinder 2 must be rotated by approximately 90°, so that the feed opening 4 and thus also the feed region 5 face the adapter 10. In the case of axially adjustable cylinders 2, it may also be necessary to bring the cylinder 2 into an axial position suitable for this purpose.After this feed position has been reached, the adapter 10 is to be placed against the at least one feed region 5, which means that the adapter 10 is pressed against the feed region 5 with a force sufficient for adequate sealing.As schematically shown in FIG. 2, an adjusting device 14 can be used for adjusting the adapter 10 to the feed region 5, so that the at least one adapter 10 can be brought into operative connection with the feed region 5 by means of an adjusting device 14.Such an adjusting device 14 can be designed as a pneumatic cylinder or a hydraulic cylinder or an electromotive adjusting device. Such an adjusting device 14 can act either directly or indirectly on the adapter 10 and can thus adjust the latter directly or indirectly, for example via a mechanism.Furthermore, it is possible to equip the adjusting device 14 with corresponding position sensors for the movable component of the adjusting device 14, so that the position of the adapter 10 can also be detected either directly or indirectly. In this case, it may be sufficient to detect the position of the adapter 10 at least to the extent of whether it is placed on the feed region 5 or is spaced apart from the feed region 5, in order to avoid malfunctions or technical faults or damage.FIG. 3 shows a side view of the region of the cylindrical journal 8 of FIG. 2 with the feed opening 4 and the feed region 5 as an exemplary configuration.FIG. 3 shows a lateral surface 3 of the cylinder 2, which has a feed opening 4 running in the radial direction, wherein the feed opening 4 is designed as a radial bore. The region on the lateral surface 3 of the cylinder 2 adjacent to the feed opening 4 is the feed region 5.Although an embodiment is shown in FIG. 3 in which the feed region 5 is flush with the lateral surface 3 of the cylinder 2, it is also possible for the feed region 5 to project beyond the lateral surface 3 in the radial direction, which is the case, for example, when an elastomer is applied to the lateral surface 3 of the cylinder 2 in a corresponding thickness, for example by vulcanizing an elastomer onto the lateral surface 3. However, it is also possible for the feed region 5 to be recessed relative to the lateral surface 3 of the cylinder 2. Although FIG. 3 shows an embodiment in which the feed region 5 has the shape of a cylindrical lateral surface 3, it is also possible for the feed region 5 to form a planar surface, which can be realized, for example, by lowering the region around the feed opening 4 by means of a flat sinker.FIG. 4 shows the exemplary embodiment shown in FIG. 3 in a section through the cylinder 2; it can be seen here that the feed opening 4, which is designed as a radial bore, opens into a longitudinal bore 21 designed as a blind bore, so that the fluid can be guided away from the feed opening 4 in the axial extent of the cylinder 2.As can be seen from FIG. 4, the region on the lateral surface 3 of the cylinder 2 is recessed in the region of the feed bore 4, so that the feed region 5 can be designed as a rubber-elastic material in which a rubber-elastic material can be adhesively bonded, positively fastened (not illustrated in FIG. 4 ) or vulcanized on in this region.Although an embodiment is shown in FIG. 4 in which the feed region 5 is flush with the lateral surface 3 of the cylinder 2, it is also possible for the feed region 5 to project beyond the lateral surface 3 in the radial direction, which is the case, for example, when an elastomer is applied to the lateral surface 3 of the cylinder 2 in a corresponding thickness, for example by vulcanizing an elastomer onto the lateral surface 3. However, it is also possible for the feed region 5 to be arranged recessed relative to the lateral surface 3 of the cylinder 2.The rubber-elastic surface of the feed region 5 can consist, for example, of nitrile rubber, styrene-butadiene rubber, chloroprene rubber, fluorine polymer rubber, butadiene rubber, natural rubber, silicone rubber or of ethylene-propylene-diene rubber or of another elastomer.The surface of the feed region 5, i.e. the elastomer applied there, has a hardness of approximately 20 Shore A to 100 Shore A, preferably the surface of the feed region 5, i.e. the elastomer applied there, has a hardness of 40 to 80 Shore A, and very preferably the surface of the feed region 5, i.e. the elastomer applied there, has a hardness of 50 to 70 Shore A.FIG. 5 shows a sectional illustration through the cylinder 2 in the region of the feed opening 4; FIG. 5 shows an exemplary configuration in this case, in which the cylinder 2 comprises a sleeve 6 in the region of the feed opening 4. The sleeve 6 comprises at least one opening 9, in the exemplary embodiment shown in FIG. 5, this opening 9 is designed as a radial bore through the sleeve 6.This opening 9 of the sleeve 6 is configured in such a way that it overlaps at least partially with the supply opening 4 of the cylinder 2, in order to thus enable the fluid to be supplied into the cylinder 2.The sleeve 6 is fastened in a positionally accurate manner on the cylinder 2 or a cylinder journal 8, which can be achieved, for example, by a form-fit connection such as, for example, by screwing, by a force-fit connection such as, for example, by a press fit or by a material-fit connection such as, for example, by adhesive bonding. The sleeve 6 generally consists of a dimensionally stable material such as plastic, metal or a composite material, but depending on the application the sleeve 6 can also be made of a rubber-elastic material such as an elastomer.Furthermore, the sleeve 6 mounted on the cylinder 2 comprises the feed region 5, since the sleeve 6 forms the lateral surface 3 of the cylinder 2 in the region of the feed bore. In the example shown in FIG. 5, in a manner comparable to the embodiment of FIG. 4, the feed region 5 is spatially limited to the region around the feed opening 4 serving as opening 9.Although FIG. 5 shows an embodiment in which the feed region 5 is flush with the lateral surface 3 of the sleeve 6, it is also possible for the feed region 5 to project beyond the lateral surface 3 of the sleeve 6 in the radial direction, which is the case, for example, when an elastomer is applied to the sleeve 6 in a corresponding thickness, for example by vulcanizing an elastomer onto the sleeve 6. Furthermore, all possible embodiments explained under FIG. 4 also apply in this case.FIG. 6 shows a section through one location of the cylinder 2 or of the cylinder journal 8 and shows an exemplary embodiment with two supply openings 4 arranged next to one another. These supply openings 4 are designed as radial bores and both open into a longitudinal bore 21 running in the interior of the cylinder 2, so that the fluid can be passed on via this longitudinal bore 21 to another location of the cylinder 2.Furthermore, in the embodiment shown in FIG. 6, the cylinder 2 comprises a sleeve 6 mounted on the lateral surface 3 shown there, which sleeve has two openings 9 which are congruent with the two feed openings 4, so that the two openings 9 of the sleeve 6 form an extension of the two feed openings 4.In the embodiment shown by way of example in FIG. 6, the feed region 5 is arranged both between and around the openings 9 serving as an extension of the two feed openings 4 and is designed in the form that the sleeve 6 has a coating made of a rubber-elastic material as feed region 5. In the embodiment shown in FIG. 6, the sleeve 6 comprises a coating of a rubber-elastic material serving as feed region 5 over its entire length, but it is also possible for the elastic material serving as feed region 5 to be applied only over part of the length of the sleeve 6.Although it is possible to configure the contour of the cylinder 2 directly in the manner which is achieved with the application of the sleeve 6 to the cylinder 2, it is, on the one hand, more economical to apply a sleeve 6 with a rubber-elastic feed region 5 to the cylinder 2, and on the other hand, in the case of an embodiment according to FIG. 6, in the case of a decreasing elasticity of the feed region 5, the entire cylinder 2 does not have to be disassembled and revised, since it is sufficient in this case to exchange only the sleeve 6 already having the feed region 5.FIG. 7 shows an exemplary embodiment of an adapter 10 in a three-dimensional view, which, for example, likewise comprises 2 passage openings 12 in a manner matching the embodiment of a cylinder 2 having two feed openings 4 shown in FIG. 6. For the passage of the fluid through the adapter 10, the adapter 10 shown by way of example in FIG. 7 comprises two feed lines 11 which are shown as threaded bores into which hoses or tubes for supplying the fluid can be fastened.Furthermore, FIG. 7 shows that a protrusion 13 is respectively arranged around the two passage openings 12, which protrusion is designed in the form of a circular bead in the example shown in FIG. 7. Furthermore, the side of the adapter 10 which is brought into contact with the feed region 5 of the cylinder 2 and comprises the two elevations 13 has a rounded and thus cylindrical shape, such that each elevation 13 can be brought into contact uniformly with the feed region 5 of the cylinder 2 over its entire extent. The elevations 13 consist either of a dimensionally stable material such as, for example, a thermoplastic, a thermosetting plastic, a metal or a composite material or of a rubber-elastic material. Contours of any desired shape can be economically realized if, in particular, the entire adapter 10 is produced using an additive manufacturing method.Although the exemplary embodiment of an adapter 10 illustrated in FIG. 7 comprises two passage openings 12 and thus two separate elevations 13, the above-mentioned embodiments are. Features for embodiments with one passage opening 12 or with more than two passage openings 12 can be transferred. Furthermore, it is also possible, for example, to implement the more than one passage opening 12 only one elevation 13 which encloses all passage openings 12.FIG. 8 shows a section through the adapter 10 shown by way of example in FIG. 7, which shows how the feed line 11 merges into the passage opening 12 for the passage of the fluid. Furthermore, it can be clearly seen in this sectional illustration that the at least one elevation 13 is designed such that it lies on a cylindrical surface described by a radius R, such that uniform pressing or uniform bearing on the feed region 5 takes place when the adapter 10 together with the at least one elevation 13 is placed or pressed onto the lateral surface 3 of the cylinder 2. Consequently, the radius R shown in FIG. 8 is substantially identical to the radius of the corresponding feed region 5 on the lateral surface 3 of the cylinder 2 shown by way of example in FIG. 6.If a cylinder 2 comprises a feed region 5 which is defined by a plane, which is the case, for example, if the feed region 5 is arranged on an end face of the cylinder 2 or if the region around the at least one feed opening 4 is countersunk by a flat sinker or milling cutter, then the elevation 13 is also to be designed to be correspondingly planar in this case.Although described above. Although the invention has been described with reference to the feeding of a fluid into a rotatably mounted cylinder 2, the present invention is equally applicable to the discharge of fluids or to the simultaneous or staggered feeding and discharge of fluids to and from a cylinder 2.It is also possible to apply the present invention to two different locations of a cylinder 2 so that one adapter 10 is used for supplying a fluid and another adapter 10 is used for discharging the fluid.Furthermore, it is also possible to provide a valve in the at least one feed opening 4 of a cylinder 2, in order to prevent undesired penetration of contamination or other media.List of reference characters1 Device 2 Cylinder 3 Lateral surface 4 Feed opening 5 Feed region 6 Sleeve 7 Bearing 8 Cylinder pin 9 Opening (on the sleeve 6) 10 Adapter 11 Feed line 12 Passage opening 13 Elevation 14 Adjusting device 20 Rotary insert 21 Longitudinal bore R Radius

Claims

Device (1) for temporarily supplying a fluid into a rotatably mounted cylinder (2), wherein the cylinder (2) comprises at least one supply opening (4) on a lateral surface (3) and / or on an end side for supplying the fluid and a supply region (5) around each of the at least one supply opening (4), wherein the device (1) comprises at least one adapter (10), wherein the adapter (10) comprises at least one supply line (11) for the fluid and at least one passage opening (12) for the fluid, characterized in that the adapter (10) has a closed elevation (13) around the at least one passage opening (12), which elevation is designed such that each elevation (13) can be brought into contact uniformly with the supply region (5) over its entire extent, and wherein the at least one adapter (10) for supplying the fluid can be brought with the at least one elevation (13) in operative connection with the supply region (5) of the lateral surface (3) and / or the end face of the cylinder (2), wherein the supply region (5) comprises a rubber-elastic surface and wherein the elevation (13) around the passage opening (12) consists of a dimensionally stable and / or rubber-elastic material.Device (1) according to claim 1, characterised in that the cylinder (2) comprises, in the region of the feed opening (4), a sleeve (6) having at least one opening (9) which at least partially overlaps the at least one feed opening (4), and wherein the sleeve (6) comprises the feed region (5).Device (1) according to one of claims 1 or 2, characterised in that the rotatably mounted cylinder (2) can be brought into a defined feed position for supplying and / or discharging the fluid, and in that for supplying the fluid into the rotatably mounted cylinder (2), the at least one adapter (10) can be adjusted to the at least one feed region (5).Device (1) according to one of Claims 1 to 3, characterized in that the at least one adapter (10) can be brought into operative connection with the feed region (5) by means of an adjusting device (14).Device (1) according to claim 4, characterised in that the adjusting device (14) is designed as a pneumatic cylinder or a hydraulic cylinder or an electromotive adjusting device.Device (1) according to one of Claims 1 to 5, characterized in that the feed region (5) consists of nitrile rubber, styrene-butadiene rubber, chloroprene rubber, fluorine-polymer rubber, butadiene rubber, natural rubber, silicone rubber or of ethylene-propylene-diene rubber.Device (1) according to one of claims 1 to 6, characterised in that the surface of the feed region (5) has a hardness of 20 to 100 Shore A.Device (1) according to one of Claims 1 to 7, characterized in that the elevation (13) of the adapter (10) consists of a thermoplastic or thermosetting plastic, of a metal or of a composite fibre material.Device (1) according to one of Claims 1 to 8, characterized in that the at least one adapter (10) can be brought into a plurality of positions in the direction of rotation and / or in the axial direction of the cylinder (2).Device (1) according to one of Claims 1 to 8, characterized in that a plurality of adapters (10) is arranged for each feed opening (4) of the cylinder (2) in the radial and / or axial extent.

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