Flushable slide rail assembly

Abstract

The invention relates to an assembly comprising a slide and a rail which is elongated in the longitudinal direction. The rail has a guide section, and the slide has a guide receiving area which is designed as a through-guide and which has an open cross-section that is delimited by a delimiting wall encircling a guide receiving area axis which runs parallel to the longitudinal direction. In an operating state of the assembly, the slide is movably mounted on the rail relative thereto in the longitudinal direction, and the guide section of the rail is received in the guide receiving area of the slide. For each rotational position of the guide section about the axis of the guide receiving area, the delimiting wall forms a stop for a movement of the guide section relative to the guide receiving area in each direction running perpendicularly to the longitudinal direction. The delimiting wall has multiple stop sections, and a respective flush recess which can be flushed with a cleaning liquid over the entire length thereof in the longitudinal direction is provided in the delimiting wall between each pair of adjacent stop sections and / or the guide section has an outer face which is designed to correspond to the stop formed by the delimiting wall of the guide receiving area.

Description

[0001] Ma / mb March 26, 2024 Applicant: igus GmbH 51147 Cologne Flushable carriage-rail arrangement The invention relates to an arrangement comprising a carriage and a rail according to the preamble of claim 1, as well as the use of such an arrangement for the production of food. Generic arrangements comprising a carriage and a rail are also conventionally referred to as plain bearing assemblies. The carriage and rail are elements of the plain bearing arrangement that are designed to correspond to one another. While the rail is usually fixed in a fixed position to a structural element, such as a wall or floor of a room, the carriage can be moved along the rail in a guided manner.The rail usually extends elongated in a longitudinal direction, and the carriage is movable in the longitudinal direction relative to the rail, while it is guided on the rail such that its position relative to the rail is fixed perpendicular to the longitudinal direction. The rail usually has a longitudinal extension length that is at least 4 times, in particular at least 5 times, in particular at least 10 times the longitudinal extension length of the carriage. While the carriage moves along the rail, the carriage glides along the rail. To ensure this, the rail usually has a guide section and the carriage has a guide receptacle designed as a feedthrough. The feedthrough is a continuous feedthrough in the longitudinal direction, i.e. it has a continuous clear cross-section over its longitudinal extension, so that the guide section of the rail can fit into the guide receptacle orThe guide receptacle or receptacle has a boundary wall that limits the clear cross-section of the guide receptacle. The term "cross-section" refers to a cross-section perpendicular to the longitudinal direction. Accordingly, the boundary wall limits the clear cross-section by encircling an axis of the guide receptacle that runs parallel to the longitudinal direction.In any case, the boundary wall rotates around the aforementioned axis of the guide mount to such an extent that, when the guide section of the rail is arranged in the guide mount, the boundary wall determines the position of the guide section relative to the carriage in all directions perpendicular to the longitudinal direction, so that the arrangement of the guide section in the guide mount ensures that the carriage is guided relative to the rail perpendicular to the longitudinal direction, while the carriage is movable along the longitudinal direction relative to the rail. Accordingly, in the intended operating state of the arrangement, the carriage is mounted on the rail so that it can be displaced longitudinally relative to the rail.In the operating state, the guide section of the rail is received in the guide receptacle of the carriage, wherein in the operating state the boundary wall forms a stop for movement of the guide section relative to the guide receptacle in any direction perpendicular to the longitudinal direction, and this for any possible rotational position of the guide section relative to the guide receptacle that is possible in the operating state, wherein the rotational position refers to a rotation about an axis of the guide receptacle that runs parallel to the longitudinal direction. In any direction perpendicular to the longitudinal direction, the guide section can thus only be moved in the operating state until it rests against the stop formed by the boundary wall of the guide receptacle.Such plain bearing assemblies have proven particularly advantageous for industrial manufacturing processes, as they allow mechanical elements that can be attached to the carriage to be moved along the rail in a very simple manner. To reduce friction between the rail and carriage, such plain bearing assemblies typically have sliding elements that are fixed to the carriage and form an inner wall of the guide recess. Additionally or alternatively, sliding lubrication can be provided between the rail and carriage to keep friction between the rail and carriage as low as possible. However, such generic plain bearing assemblies are only inadequately suited for use in food manufacturing processes. In such food manufacturing processes, it is imperative that any undesirable contamination of the food is excluded.Such unwanted contamination can, for example, arise from lubricants provided between the rail and the carriage. Even when using sliding elements, which can, for example, be made of a sliding material, which avoids the use of lubricants, there is still a risk of contamination. This is because such sliding elements are usually inserted into the carriage with the tightest possible fit and lie against the rail with the tightest possible fit. Although play should be reduced to a minimum, it cannot be avoided entirely. Such play between the sliding element and the rail or a possible gap between the sliding element and the carriage can act as a trap for contamination that is difficult to clean and can therefore potentially lead to contamination of food during the manufacturing process.The high hygiene requirements in food production processes can therefore only be met with generic plain bearing assemblies with very high and costly cleaning effort. The present invention is based on the object of providing an arrangement with a carriage and a rail and / or a use of such an arrangement, with which at least one disadvantage of a conventional arrangement or use can be at least partially eliminated. As a solution to the object underlying the invention, the invention proposes an arrangement with the features according to claim 1. The arrangement according to the invention comprises a carriage and a rail which is elongated in a longitudinal direction. The invention is particularly preferably directed to such arrangements in which a load of at least 1000 N, in particular at least 1500 N, in particular at least 2.000 N can be applied and, during the application of the load, the carriage can be moved along the longitudinal direction relative to the rail in a sliding manner thereon. The rail has a guide section, and the carriage has a guide receptacle which corresponds to the guide section and is designed as a feedthrough. The guide receptacle has a clear cross-section which is delimited by a boundary wall which runs around an axis of the guide receptacle which runs parallel to the longitudinal direction. In one embodiment, the boundary wall delimits the clear cross-section continuously, in another embodiment only in sections. In any case, the boundary wall preferably delimits the clear cross-section in such a way that, when the guide section is arranged in the guide receptacle, the position of the guide section relative to the guide receptacle is fixed in every direction perpendicular to the longitudinal direction.The guide section and the guide receptacle are designed to correspond to one another in such a way that the guide section can be arranged in the guide receptacle, i.e. in the clear cross-section of the guide receptacle, and its position is fixed perpendicular to the longitudinal direction relative to the guide receptacle or relative to the carriage, while the carriage can be moved along the rail and thus along the guide section in the longitudinal direction. In an operating state of the arrangement, the carriage is mounted on the rail so as to be displaceable in the longitudinal direction relative to the rail. Furthermore, in the operating state, the guide section of the rail is received in the guide receptacle of the carriage, wherein the boundary wall forms a stop for movement of the guide section relative to the guide receptacle in any direction perpendicular to the longitudinal direction.The stop ensures such a movement limitation for every rotational position of the guide section relative to the guide receptacle that is possible in the operating state, based on a rotation about the axis of the guide receptacle. The arrangement according to the invention can, in various embodiments, have features that are explained here in connection with generic arrangements. According to the invention, the boundary wall has a plurality of stop sections that are arranged distributed around the axis of the guide receptacle and form the stop, with a flushing recess being provided in the boundary wall between each two adjacent stop sections. The stop sections are arranged distributed around the axis of the guide receptacle, i.e. the stop sections are arranged next to one another in a specific direction of rotation about the axis.However, two stop sections adjacent in the direction of rotation are always spaced from each other by a flushing recess. The stop sections together form the stop. When the guide section moves, starting from the operating state, in any direction perpendicular to the longitudinal direction relative to the carriage, the guide section can therefore only be moved in this direction until it rests against one of the stop sections, and this applies to every possible rotational position of the guide section relative to the guide receptacle in the operating state. The stop sections together therefore form the stop, which forms the boundary wall and by which the relative position of the guide section relative to the guide receptacle and thus relative to the carriage is determined in any direction relative to the longitudinal direction.By separating two stop sections from each other in the direction of rotation by a flushing recess, cleaning of the arrangement in the operating state can take place between the stop sections in the flushing recess. Particularly preferably, the flushing recesses extend over the entire longitudinal extension length of the guide receptacle. Generally preferably, the flushing recesses are designed such that, in the operating state, the flushing recesses can be cleaned with cleaning fluid, which can flow through the flushing recesses over the entire length of the guide receptacle in the longitudinal direction. The flushing recesses therefore have a sufficient cross-section that cleaning fluid, for example water or water-based cleaning fluids that comprise water and chemicals dissolved in the water, in the operating state of the arrangement, ieWhile the guide section is located in the guide receptacle, it can be brought into the flushing recesses such that the flushing recesses can be flushed along their entire longitudinal length. Thus, in the operating state of the arrangement, a cleaning fluid can preferably be sprayed onto the arrangement with a cleaning jet such that the flushing recesses are flushed along their entire length. For example, such a cleaning jet for flushing the flushing recesses along their entire length has a pressure of 20 to 120 bar, for example 25 bar.Additionally or alternatively, according to the invention, the guide section further has an outer side which is designed to correspond to the stop formed by the boundary wall of the guide receptacle, wherein the outer side has stop regions arranged distributed around the axis of the guide receptacle, by the abutment of which stop regions against the stop, the said movement of the guide section relative to the guide receptacle is limited for each rotational position of the guide section about the axis of the guide receptacle, wherein between each two adjacent stop regions a flushable flushing recess is provided in the operating state. The flushing recesses and stop regions of the guide section can generally have features and functions as explained analogously to the flushing recesses and stop sections of the guide receptacle.For example, the flushing recesses can be arranged accordingly relative to the stop regions and can be flushed with cleaning fluid over their entire length, i.e., their longitudinal extension. The interaction of flushing recesses and stop regions serves the same purpose as described with reference to flushing recesses and stop sections: While the movement of the guide section relative to the guide receptacle is limited in any direction perpendicular to the longitudinal direction only by the abutment of the stop regions against the stop formed by the boundary wall, the flushing recesses are always spaced perpendicular to the longitudinal direction from the boundary wall, thus easily enabling adequate flushing of the arrangement in the operating state.The purpose of the invention can thus be achieved, on the one hand, by providing flushing recesses and stop sections in the guide receptacle and, on the other hand, by providing flushing recesses and stop regions in the guide section. While the invention is explained in greater detail below with reference to the provision of flushing recesses and stop sections to avoid repetition, the explanations are also applicable to the provision of flushing recesses and stop regions.The present invention is therefore based on the particular finding that a plain bearing arrangement comprising a rail and a carriage can be realized in which the carriage is sufficiently guided relative to the rail and yet easy cleaning of the arrangement is ensured by designing the boundary wall of the guide receptacle of the carriage such that, on the one hand, it has stop sections which determine the position of the guide section of the rail relative to the carriage and, on the other hand, it has rinsing recesses next to the stop sections, thanks to which sufficient, easy cleaning of the arrangement is possible. The lateral limitation of the rinsing recesses with respect to the direction of rotation is provided by the boundary wall itself, which has the rinsing recesses on the one hand and the stop sections on the other.The inventors have therefore recognized that the guide receptacle is preferably designed with a boundary wall such that guidance and easy cleaning of the arrangement in the area between the guide section and the slide is enabled. In one embodiment, the guide receptacle is formed by a slide part of the slide made of sliding material, in particular a tribopolymer. A sliding plastic is generally preferably used as the sliding material. In the present case, this is understood to mean a polymeric material that has a low coefficient of friction compared to stainless steel as a sliding partner. The sliding plastic preferably has a friction value of <0.3, in particular <0.25, in particular <0.2 compared to stainless steel, without lubrication being provided.Thermoplastic polymers such as polyethylene, polypropylene, polyacetal, polycarbonate, polyamide, polyvinyl chloride, polytetrafluoroethylene, and thermosetting phenolic resins can be used as sliding plastics. To further reduce friction, these plastics can be filled with lubricants, particularly fine-particle solid lubricants such as molybdenum disulfide or graphite. Polymers containing such lubricants are also referred to as tribopolymers. By forming the guide mount from a slide part of the slide made of a sliding material, sufficiently low friction between the rail and slide can be ensured without the use of lubricants during a relative movement of the slide relative to the rail in the longitudinal direction.This is particularly advantageous for avoiding contamination of foodstuffs when using an arrangement according to the invention in food production processes. The carriage part is particularly preferably designed as a rigid body section of the carriage which, due to its rigidity, determines a position of the carriage relative to the rail in the operating state. The inventors have recognized that an entire carriage part, i.e. an entire body section, of the carriage can thus be made of sliding material with such rigidity that there is no need to combine a die-cast carriage, as is otherwise commonly used, with a sliding element made of sliding material, which, as explained above, involves potential contamination risks, in order to create a positionally stable fixation of the carriage relative to the rail in any direction perpendicular to the longitudinal direction.In a particularly preferred embodiment, the entire carriage is made of sliding material. In one embodiment, the carriage part is designed as a guide unit, explained in more detail below, which is attached to a carriage body of the carriage and which alone ensures the guidance of the carriage relative to the rail. Generally speaking, such a carriage part or carriage made of sliding material is preferably produced by injection molding or by machining, in particular milling, of a semi-finished product previously produced from sliding material by extrusion. In one embodiment, two adjacent flushing recesses or openings are spaced from one another by the stop section or stop region arranged between them in a direction of rotation about the axis of the guide receptacle. The flushing recesses or openings are accordingly arranged adjacent to one another in the direction of rotation.Preferably, the two adjacent flushing recesses or flushing cutouts and the stop section or stop region arranged between them each run parallel to each other and parallel to the longitudinal direction. Particularly preferably, the flushing recesses or flushing cutouts each extend in the direction of rotation over an angular range that is at least 0.7 times, in particular at least 0.9 times, in particular at least 1.0 times, in particular at least 1.2 times, in particular at least 1.5 times, in particular at least 2.0 times the angular range over which the stop section or stop region arranged between them in the direction of rotation extends. It should be taken into account that the extension of the stop section along the direction of rotation, iethe angular range over which it extends is defined in that the stop section provides a stop for the guide section over this angular range when the guide section moves away from the axis of the guide receptacle in the operating state. Accordingly, the extent of the stop region along the direction of rotation, i.e. the angular range over which it extends, is defined in that the stop region can come into contact with the stop provided by the boundary wall over this angular range when the guide section moves away from the axis of the guide receptacle in the operating state. By the flushing recesses or flushing cutouts having a sufficient width, relative to the direction of rotation, sufficient flushability or sufficient cleaning option of the arrangement is provided in the operating state.The boundary wall thus comprises, on the one hand, the stop section, against which the guide section engages when attempting to move the guide section in a specific direction perpendicular to the longitudinal direction relative to the carriage, and, on the other hand, the flushing recesses, which are formed by areas of the boundary wall that the guide section cannot reach during operation because it first engages the stop section. The sufficient width of the flushing recesses thus ensures that, whatever the position of the guide section in the guide receptacle, there is always sufficient space between the boundary wall and the guide section thanks to the flushing recess, ensuring cleaning.In one embodiment, the flushing recesses are each designed as flushing grooves and have a groove base which is formed by the boundary wall and which connects the stop sections adjacent to the respective flushing recess. Thus, the flushing recesses are not designed as openings in the boundary wall, but as flushing grooves provided in the boundary wall. It should be noted that each flushing groove borders on both of its sides, relative to the direction of rotation explained above, on a stop section formed by the boundary wall. Particularly preferably, in a direction running perpendicular to the axis of the guide receptacle through the groove base, the groove base is spaced at its point furthest away from the axis of the guide receptacle by at least 2 mm, in particular at least 3 mm, from exactly the point at which the flushing groove borders an adjacent stop section.As explained above, it must be taken into account that the transition between the flushing groove and the stop section, i.e. the exact point at which the flushing groove borders the stop section, is to be determined by the fact that the guide section can be brought into contact with precisely this transition or precisely this point, starting from the operating state, when it is moved relative to the carriage in a specific direction perpendicular to the longitudinal direction, whereas the flushing groove is characterized in that the guide section cannot come into contact with it. The explained distance therefore indicates the depth of the flushing groove in the aforementioned direction perpendicular to the axis of the guide receptacle. The flushing groove therefore has a depth in this direction of at least 2 mm, in particular 3 mm. The inventors have recognized that such a depth is particularly advantageous for ensuring particularly easy flushing.Accordingly, it can be provided that the flushing recesses are each designed as flushing grooves and have a groove base which is formed from the outside and which connects the stop regions adjacent to the respective flushing recess to one another. Preferably, the groove base is spaced at its point closest to the axis of the guide receptacle by at least 2 mm, in particular at least 3 mm, from the exact point at which the flushing groove borders on a stop region adjacent to it in a direction running perpendicular to the axis of the guide section, which in the operating state preferably coincides with the axis of the guide receptacle, through the groove base. The distance accordingly indicates the depth of the flushing groove. In one embodiment, the flushing recesses or flushing grooves each have a flushing recess cross-section of at least 2 mm over the longitudinal extent of the guide receptacle. 2 , in particular at least 3 mm 2, in particular at least 5 mm 2This allows cleaning fluid to flow through the flushing recesses or to flush the flushing recesses with cleaning fluid in a particularly advantageous manner. In one embodiment, the flushing recesses together form a common flushing cross-section over the longitudinal extent of the guide receptacle, which is at least 10%, in particular at least 20%, in particular at least 30% of a cross-section enclosed between the knock-off sections. The common flushing cross-section of the flushing recesses thus amounts to a relevant proportion of the total clear cross-section of the guide receptacle, in which the guide section is accommodated in the operating state. The cross-section enclosed between the stop sections is, according to the present definition, limited by an imaginary line encircling the axis of the guide receptacle, which line passes through the side of the stop sections facing the axis, i.e. over theExtension of the stop sections through the stop sections themselves, and, between the stop sections, by adjacent stop sections, straight connecting lines are formed. The circumferential line runs in a plane perpendicular to the longitudinal direction. The connecting lines each run to the nearest ends of the sides of the adjacent stop sections, with which they point towards the axis of the guide receptacle. Accordingly, it can be provided that the flushing recesses each have a flushing recess cross-section of at least 2 mm², in particular at least 3 mm², in particular at least 5 mm² over the longitudinal extension length of the guide section and / or the flushing recesses jointly form a common flushing cross-section over the longitudinal extension length of the guide section, which is at least 10%, in particular at least 20%, in particular at least 30% of the cross-section of the guide section.In one embodiment, the flushing recesses have a width that increases along a direction of extension perpendicular to the axis of the guide receptacle, away from this axis. The width of the flushing recesses refers to their extension in the explained direction of rotation, i.e., their extension perpendicular to the longitudinal direction and perpendicular to the mentioned direction of extension. By increasing the width of the flushing recesses in the explained direction of extension away from the axis, both particularly good guidance of the guide section in the guide receptacle can be ensured, since the stop sections can have a sufficient width, and good flushability can be ensured, since the flushing recesses can have a sufficient cross-section. Preferably, the flushing recesses have a width in the mentioned direction of extension, which is perpendicular to the longitudinal direction and in particular perpendicular to the explained direction of rotation.which, starting from its end facing the axis in this direction of extension, at least initially continuously increases with increasing distance from the axis and, in particular, subsequently decreases again. Particularly preferably, the width of each flushing recess is defined by side walls of the flushing recess formed by the boundary wall, which side walls are opposite one another in the direction of rotation, wherein these side walls are designed without edges, in particular have a radius of curvature, relative to a curvature about a curvature axis that runs parallel to the longitudinal direction, of at least 3 mm over their entire extension, wherein, in particular, the side walls run parallel to the longitudinal direction. Accordingly, it can be provided that the flushing recesses have a width that increases along a direction of extension that extends perpendicular to the axis of the guide receptacle towards this axis. Generally preferred are theFlushing recesses or flushing cavities are evenly distributed around the axis of the guide receptacle. Generally preferably, at least three, in particular at least four, in particular exactly four flushing recesses or flushing cavities are provided. Generally preferably, the flushing recesses are arranged in a cloverleaf-like manner around the axis of the guide receptacle. Generally preferably, the boundary wall has a curved profile with respect to at least one axis of curvature that runs parallel to the axis of the guide receptacle, wherein it has a radius of curvature of at least 3 mm at every point. The boundary wall preferably has a profile around the axis of the guide receptacle such that it has a curvature in different sections around a different axis of curvature that runs parallel to the axis of the guide receptacle and thus parallel to the longitudinal direction, wherein it is ensured that it does not have any curvature that has a radius of curvature ofless than 3 mm. By avoiding a small radius of curvature of the curvature of the boundary wall, a particularly good cleaning possibility of the boundary wall is ensured. Generally preferably, the boundary wall runs parallel to the longitudinal direction over at least 80%, in particular at least 90% of its entire extent, in particular parallel to the longitudinal direction over its entire planar extent. Accordingly, it is preferably provided that the outer side of the guide section has a curved course with respect to at least one axis of curvature that runs parallel to the axis of the guide receptacle, wherein it has a radius of curvature of at least 3 mm at every point. The outer side preferably has a course around the axis of the guide receptacle such that it has a curvature in different sections around a different axis of curvature that is parallel to the axis of the guide section, around which it mayis rotatable, and thus runs parallel to the longitudinal direction, ensuring that it does not have any curvature which has a radius of curvature of less than 3 mm. Generally preferably, the outer side runs parallel to the longitudinal direction over at least 80%, in particular at least 90% of its entire extent, in particular parallel to the longitudinal direction over its entire planar extent. In one embodiment, the rail has at least one further guide section and the carriage has at least one further guide receptacle designed as a further lead-through. The further guide section and the further guide receptacle can, in advantageous embodiments, have features which are explained here with reference to the guide section or the guide receptacle or their interaction. For example, the further guide receptacle can thus have a clear cross-section which is defined by aThe further guide receptacle is delimited by a boundary wall running around the axis of the further guide receptacle, which boundary wall is thus assigned to the further guide receptacle, wherein in the operating state of the arrangement the further guide section of the rail is received in the further guide receptacle of the carriage and the boundary wall of the further guide receptacle forms a stop for the movement of the guide section relative to the further guide receptacle in any direction running perpendicular to the longitudinal direction. Preferably the boundary wall of the further guide receptacle has a plurality of stop sections which are distributed around the axis of the guide receptacle and form the stop of the further guide receptacle, wherein a flushing recess is provided in the boundary wall of the further guide receptacle between each two adjacent stop sections, and / or the further guide section has an outer side which corresponds tothe stop formed by the boundary wall of the further guide receptacle, wherein the outer side has stop regions distributed around the axis of the further guide receptacle, by the abutment of which stop regions the said movement of the further guide section relative to the further guide receptacle is limited for each rotational position of the further guide section about the axis of the further guide receptacle, wherein a flushable flushing recess is provided between each two adjacent stop regions. The provision of two guide sections and two guide receptacles, wherein each of the guide sections is assigned to precisely one of the guide receptacles and, in the operating state, each of the guide sections is arranged in the guide receptacle assigned to it, can ensure particularly reliable guidance of the carriage on the rail. Furthermore, the various guide sections orGuide receptacles each fulfill a different function. For example, one of the pairings of guide section and guide receptacle can ensure only a particularly rigid guidance of the carriage relative to the rail, wherein the interaction of the other guide receptacle with the other guide section can enable a drive of the carriage relative to the rail for moving the carriage in the longitudinal direction along the rail. In further particularly advantageous embodiments, the rail has at least two further guide sections and the carriage has at least two further guide receptacles, wherein the two further guide sections and the two further guide receptacles can be advantageously designed as explained with regard to the guide section or the guide receptacle or with regard to their interaction. By providing such a plurality of further guide sections or guide receptacles, which, as explained, correspond to one anothercan be designed and can interact simultaneously in the operating state as explained, an even better guidance and even better handling of the carriage on the rail can be made possible. In one embodiment, the guide receptacle and the further guide receptacle are formed by a one-piece carriage body or by a one-piece guide component fastened to a carriage body of the carriage, wherein the guide component can be, for example, the guide unit explained in more detail below or the carriage part explained in more detail above. Accordingly, when providing several further guide receptacles, the several further guide receptacles and the guide receptacle can be formed by a one-piece carriage body or by a one-piece guide component fastened to the carriage body. By the guide receptacles all being formed by a single component, a particularly simpleManufacturing of the arrangement and, moreover, a particularly advantageous guidance of the carriage relative to the rail is ensured. In one embodiment, the guide section and the further guide section are formed by a different, separately manufactured component of the arrangement. Particularly preferably, the two components, which each form one of the guide sections, are connected to one another, in particular rigidly connected to one another, by a connecting component. Particularly preferably, the guide sections, in particular the rail as a whole, are made of stainless steel. By producing the guide sections as separate components, the rail can be manufactured particularly cost-effectively, simply and easily cleaned. Particularly preferably, the connecting component has an underside, with which the rail is to be fastened to a component as intended, wherein the connecting component is connected to all the points provided outside the undersideouter surfaces exclusively have surfaces that are bevelled to a predetermined plane. Due to the bevelled design, the arrangement can be cleaned particularly advantageously. Particularly preferably, all surfaces of the guide sections and / or all surfaces of the carriage are also bevelled to this predetermined plane. Generally, the entire arrangement is preferably designed to be edge-free on its entire outer side. Particularly preferably, the underside is designed to be mounted on a surface of a component with its underside that lies in the predetermined plane. When the arrangement is used as intended, it can thus be provided that the rail is fastened with the underside of the connecting component to a surface of a component that runs in a predetermined plane, wherein this plane is preferably at least with one component, in particular completely, perpendicular to the earth'sGravitational force runs. By providing the surfaces bevelled to this predetermined plane on all sides of the connecting component which the connecting component has outside the underside, i.e. on all sides except the underside, a particularly good cleaning of the arrangement can be enabled, since cleaning fluid can drain particularly well from the corresponding sides or outer surfaces. In one embodiment, the stop sections which are formed by the boundary wall of the guide receptacle, together form an internal thread, wherein the guide section is designed as a spindle with an external thread corresponding to the internal thread. Accordingly, it can be provided that the stop has an internal thread and the guide section is designed as a spindle with an external thread corresponding to the internal thread, which is formed by the stop regions. Thus, it can be particularly advantageously providedbe that by rotating the guide section designed as a spindle around the longitudinal direction relative to the carriage, a movement of the carriage relative to the rail or spindle occurs. The inventors have found that with such a design, the guide receptacle can be designed in the manner of a flushable nut, which on the one hand forms an internal thread for the spindle with its stop sections and on the other hand, with its flushing grooves, enables easy cleaning of the arrangement, in which by rotating the spindle around the longitudinal direction, a movement of the carriage relative to the rail in the longitudinal direction can be generated. Thus, the described embodiment is particularly advantageously used for the realization of plain bearing arrangements in which a carriage is to be moved in a simple manner relative to a rail with a drive. The external thread naturally has a thread diameter which is defined by the outside of the threadis formed. Preferably, the thread diameter has a value between 10 mm and 30 mm, in particular between 10 mm and 20 mm. It has proven particularly advantageous to design the guide section and guide receptacle in such a way that they correspond to one another, namely by the explained provision of flushing recesses or flushing cutouts, that in the operating state between the guide section and the guide receptacle in every possible rotational position of the guide section relative to the guide receptacle, a clear cross section is formed between the guide section and the guide receptacle, which has at least 20%, in particular at least 30%, in particular at least 50%, in particular at least 70%, in particular at least 100%, in particular at least 120%, in particular at least 150% of a circular area whose diameter corresponds to the thread diameter. Generally, the flushing recesses or flushing cutouts each have a maximum widthperpendicular to the longitudinal direction, which is at least 0.3 times, in particular at least 0.5 times, in particular at least 0.7 times the thread diameter. In one embodiment, the further guide section is designed as a smooth shaft. The term "smooth shaft" refers here to a shaft whose outer side has no steps that would impede the sliding of a body sliding along it in the longitudinal direction. Particularly preferably, in one embodiment, the smooth shaft is defined by having a constant cross-section running perpendicular to the longitudinal direction over its entire longitudinal extent. By designing the further guide section as a smooth shaft, the further guide section can contribute to the reliable guidance of the carriage on the rail without impeding a relative movement of the carriage relative to the rail along the longitudinal direction. When providing aGuide section and a further guide section, each designed as a smooth shaft, the carriage can be guided particularly reliably on the rail and moved particularly easily in the longitudinal direction relative to the rail. In an embodiment in which the guide section, as explained, is designed as a spindle and the guide receptacle forms an internal thread, whereas the further guide section is designed as a smooth shaft, a drive of the carriage to generate a movement of the carriage relative to the rail in the longitudinal direction can be made particularly easy, while the further guide section can ensure that rotation of the carriage is reliably prevented upon rotation of the spindle about an axis that runs parallel to the longitudinal direction. In a particularly advantageous embodiment, the guide section is designed as a spindle, as explained, and the rail has a firstand a second further guide section, each of which is designed as a smooth shaft, wherein preferably the two further guide sections are spaced apart from each other by less than 50 cm, in particular by less than 30 cm, in particular by less than 20 cm. Particularly preferably, the guide section, which is designed as a spindle, is arranged between the first and second further guide sections. Accordingly, the guide receptacle is particularly preferably arranged between the first and second further guide receptacles. Generally preferably, the respective guide receptacle, which is assigned to a guide section designed as a smooth shaft, is designed as a smooth guide receptacle, so that the guide receptacle corresponds to the guide section designed as a smooth shaft and thus a preferably friction-free, purely translational, longitudinal movement of the corresponding guide receptacle to the corresponding guide sectionis ensured. Preferably, the smooth guide receptacle has a constant cross-section perpendicular to the longitudinal direction over its longitudinal extent. In one embodiment, the arrangement has a first fixing body and a second fixing body, wherein the first and second fixing bodies are spaced apart from one another in the longitudinal direction. Preferably, the guide section, which is designed as a spindle, and the further guide section, which is designed as a smooth shaft, in particular the entire rail, extend in the longitudinal direction from the first to the second fixing body, wherein the carriage is arranged between the first and second fixing bodies and can be moved in the longitudinal direction between the first and second fixing bodies by rotating the guide section designed as a spindle. This is of course based on the operating state in which the respective guide sections are arranged in the guide receptacle assigned to them. By aSuch a particularly advantageous arrangement allows the carriage to be reliably moved between the two fixing bodies. Such an arrangement can be particularly advantageous for use in food production processes. For example, such an arrangement can be used to implement a lifting table or to move an apparatus, which is fastened to the carriage, between the two fixing bodies. Particularly preferably, the carriage has mounting openings to which an apparatus can be fastened by means of screws. For example, the screws can run through the mounting opening and be screwed into the apparatus or screwed to the apparatus. The apparatus can be an apparatus for use in a food production process, for example a robot, a holding arm, or the like. In one embodiment, the carriage has a carriage body which has a longitudinally continuous opening with an opening cross-section, whereinA guide unit is attached to the slide body, which forms the guide receptacle, wherein the cross section of the guide receptacle is arranged in alignment with the opening cross section. The guide unit can, for example, be designed as the guide component or slide part explained above. By forming the guide receptacle by such a guide unit, which is manufactured as a component separate from the slide body and is subsequently attached to the slide body to realize the slide, the slide body and guide unit can be manufactured particularly specifically for their respective purposes. For example, the slide body can be made of stainless steel and the guide unit can be made of a sliding material. Generally preferably, the slide body is made of a first material and the guide unit is made of a second material. Generally preferably, the guide unit is made of a sliding materialmanufactured. In one embodiment, the carriage has a flushing opening on at least one side, which delimits the carriage in a transverse direction running perpendicular to the longitudinal direction, from which a flushing channel extends in the transverse direction to the guide receptacle. By providing the lateral flushing opening and connecting the guide receptacle to the flushing channel, an even further improved cleaning of the entire guide receptacle can be enabled. Particularly preferably, the flushing opening and / or the flushing channel is spaced from both longitudinal ends of the carriage. Particularly preferably, the flushing channel opens into at least one, in particular into at least two adjacent, flushing recesses. By the flushing channel opening into at least one, preferably into at least two, of the flushing recesses, a cleaning fluid can be introduced through the flushing channel into the flushing recesses. This can particularly promote flushing of the flushing recesses.Generally, for any embodiment, the flushing recesses or flushing cavities are particularly preferably open at both their longitudinal ends, so that cleaning fluid can flow into the flushing recess from both their longitudinal ends. In the particularly preferred embodiment, in which a lateral flushing opening and a flushing channel are provided, it is thus preferably possible to introduce cleaning fluid into the flushing recesses not only from their longitudinal ends but also from the side. The flushing opening particularly preferably extends over at least 20%, in particular over at least 30%, of the longitudinal extension length of the carriage. This can enable particularly simple cleaning. Generally, the flushing channel opens into the guide receptacle at an opening point, wherein at the opening point it has a clear height in a direction perpendicular to the longitudinal direction, which is at least 0.5 timesin particular at least 0.7 times the clear height of the guide receptacle in this vertical direction and / or which is at least 0.2 times, in particular at least 0.3 times, in particular at least 0.5 times the total extension length of the carriage in the vertical direction. Generally, the carriage further comprises a further guide receptacle and a further flushing opening, wherein the further flushing opening and the flushing opening are provided on two sides of the carriage facing away from one another, which each delimit the carriage in the said transverse direction. Accordingly, the carriage may comprise a further flushing channel extending from the further flushing opening to the further guide receptacle, and further features may be provided, as explained here in connection with the flushing opening, the flushing channel, and the guide receptacle. The invention further relates to the use of an arrangement according to the inventionfor the production of food. At least one ingredient and / or at least one apparatus is transported with the carriage for the production of the food. The carriage, together with the ingredient or the apparatus arranged on it, is moved longitudinally, preferably exclusively longitudinally, relative to the rail. Particularly preferably, the arrangement is cleaned with cleaning fluid between two successive phases of use, in each of which food is produced, while the arrangement is in the operating state. Preferably, the arrangement is continuously in the operating state both during the phases in which a food is produced and between these phases, i.e., each of the provided guide sections of the rail is continuously arranged in the respective guide receptacle of the carriage and remains therein. During each of the phases, preferablyFood is produced by moving the carriage in the longitudinal direction relative to the rail. The invention is explained in more detail below with reference to seven figures using exemplary embodiments. They show: Figure 1: in various schematic principle representations, an embodiment of an arrangement according to the invention; Figure 2: in various schematic principle representations, the carriage of the arrangement according to Figure 1; Figure 3: in various schematic principle representations, a guide unit of an embodiment of an arrangement according to the invention; Figure 4: in various schematic principle representations, a guide unit of a further embodiment of an arrangement according to the invention; Figure 5: in various schematic principle representations, a further embodiment of an arrangement according to the invention; Figure 6: in various schematic principle representations, the carriage of a further embodiment of an arrangement according to the invention;Figure 7: shows various schematic representations of the carriage of the embodiment according to Figure 5. Figure 1, comprising Figures 1a, 1b, and 1c, shows an embodiment of an arrangement 1 according to the invention in various schematic representations. Figure 1a shows a schematic plan view of the arrangement. Figure 1b shows a section through the arrangement, with the longitudinal direction X lying in the section plane. Figure 1c shows a further section through the arrangement, with the longitudinal direction X running perpendicular to the section plane. The arrangement 1 according to Figure 1 has a guide comprising a guide section 3 as well as a first further guide section 4 and a second further guide section 5. The further guide sections 4, 5 are each designed as a smooth, circular shaft and are fixed with their first end to a first fixing body 6 and with their second end to a second fixing body 7. TheGuide section 3 is arranged between the two further guide sections 4, 5 and is designed as a spindle with an external thread. The guide section 3 is rotatably mounted on the two fixing bodies 6, 7 by means of pivot bearings 50. A carriage 2 is also arranged between the two fixing bodies 6, 7. The arrangement 1 is shown in its operating state in Figure 1. The carriage 2, which is shown in more detail in Figure 2, has for each of the guide sections 3, 4, 5 a guide receptacle assigned to the respective guide section 3, 4, 5, in which the respectively assigned guide section 3, 4, 5 is arranged in the operating state shown in Figure 1. While the further guide sections 4, 5 and the further guide receptacles are designed as smooth shafts or smooth guide receptacles and thus do not have a stepped shape along the longitudinal direction, in the present case even each have the samecross-section, this does not apply to the guide section 3 designed as a spindle and the guide receptacle of the carriage 2 assigned to it, since these are stepped along the longitudinal direction due to the thread provided on their outer sides. By rotating the guide section 3 about an axis that runs parallel to the longitudinal direction X shown in Figure 1, the carriage 2 can be moved purely translationally in the longitudinal direction X between the fixing bodies 6, 7. The guidance provided by the further guide sections 4, 5 together with the guide receptacles assigned to them prevents rotation of the carriage 2 about the said axis during rotation of the guide section 3 designed as a spindle about its axis, which coincides with the axis of the guide receptacle assigned to it and runs parallel to the longitudinal direction X. The carriage 2 further has fastening openings 20, via which an apparatuscan be fixed to the slide 2. The slide 2 can thus be used as a carriage movable in the longitudinal direction X. The thread formed on the outside of the guide section 3 is not explicitly shown in the figure. However, Figure 1b shows that the slide 2, with its internal thread, overlaps the extension of the spindle, which is only possible due to the provision of the external thread on the spindle. Through the interaction of the external thread of the guide section 3 designed as a spindle and the internal thread of the associated guide receptacle of the slide 2, a movement of the slide 2 in the longitudinal direction is possible due to the described rotation of the spindle. From Figure 1c, in conjunction with Figure 1, it can be seen that the guide receptacles of the slide 2 each have flushing recesses, through which flushing or cleaning of the arrangement is effectively possible in the operating state shown in Figure 1. The properties of theFlushing recesses are explained in more detail below with reference to Figure 2. In Figure 2, comprising Figures 2a, 2b and 2c, the carriage 2 of the arrangement according to Figure 1 is shown schematically in various basic representations. While Figure 2a shows a schematic oblique view of the carriage, Figure 2b shows a plan view of the carriage in the longitudinal direction, and Figure 2c shows a section through the carriage, the section plane of which runs parallel to the longitudinal direction X. It can be seen from Figure 2 that the carriage 2 has a guide receptacle 23 and a first and second further guide receptacle 24, 25. Each of the guide receptacles 23, 24, 25 has a clear cross-section which is delimited by a boundary wall of the respective guide receptacle 23, 24, 25 surrounding the axis of the respective guide receptacle 23, 24, 25, wherein the boundary wall each has a plurality of stop sections 231, 241, 251 which extend around the axis of the respectiveGuide receptacles 23, 24, 25 are arranged in a distributed manner, with a flushing recess 230, 240, 250 being provided between each two adjacent stop sections 231, 241, 251. The stop sections 231 of the guide receptacle 23 together form an internal thread which is formed only in angular sections by the stop sections 231 and which has interruptions formed by the flushing recesses 230, as can also be seen in Figure 2c. In particular, it can be seen from Figure 2b that the arrangement of stop sections 231, 241, 251 of the guide receptacles 23, 24, 25 and the flushing recesses 230, 240, 250 is provided in such a way that, on the one hand, they are arranged symmetrically, ie evenly distributed, around the axis of the respective guide receptacle 23, 24, 25 and, on the other hand, in a direction of rotation around this axis, two of the stop sections 231, 241, 251 are arranged next to one another and, with respect to this direction of rotation,a flushing recess 230, 240, 250 is arranged between them. The stop sections 231, 241, 251 and the flushing recesses 230, 240, 250 each extend over an angular range, relative to this direction of rotation around the axis of the respective guide receptacle 23, 24, 25. Figure 2b shows that the angular range over which the flushing recesses 230, 240, 250 extend approximately corresponds to the angular range over which the adjacent stop sections 231, 241, 251 extend. Furthermore, it can be seen that the flushing recesses 230, 240, 250 are each designed as flushing grooves, which have a groove bottom formed by the boundary wall of the respective guide receptacle 23, 24, 25, so that the stop sections 231, 241, 251 adjacent to this flushing recess 230, 240, 250 and spaced apart from each other by the flushing recess are connected to each other by the groove bottom of a flushing recess 230, 240, 250. While theWhile the flushing recesses 230, with reference to the explained direction of rotation, have a width that increases in a direction perpendicular to the axis of the guide receptacle 23, away from the axis, until it reaches its maximum, and then decreases again, the flushing recesses 240, 250 of the further guide receptacles 24, 25 have a substantially constant width thereon. Furthermore, it can be seen that the flushing recesses 230 of the guide receptacle 23 each have a considerable flushing recess cross-section, in this case of more than 5 mm², while the flushing recesses 240, 250 of the further guide receptacles have a significantly smaller flushing cross-section of less than 4 mm². In general, it has proven particularly advantageous according to the invention to design the flushing recesses of a guide receptacle, the stop sections of which provide an internal thread, to be particularly large, in particular larger than the flushing recesses of smooth guide receptacles, sinceDue to the particularly large flushing recesses of the guide receptacle, sufficient flushing is easily possible even when a spindle with an external thread is arranged in the guide receptacle. The carriage 2 shown in Figure 2 is designed as a one-piece carriage made of a sliding material, in this case a tribopolymer. Figures 3 and 4 each show an embodiment of a separate guide unit 8 which is made of a sliding material, in this case a tribopolymer, and which can be attached to a carriage body of a carriage 2 of an embodiment of an arrangement 1 according to the invention and can act as a flushable nut for receiving a spindle. The provision of such a separate guide unit has proven to be particularly advantageous, since in this way a carriage can be very easily designed so that it can be driven by a spindle, as in the exemplary embodiment according to Figure1, and, moreover, is easy to rinse despite the meshing of nut and spindle. Figure 3, comprising Figures 3a and 3b, shows schematically an embodiment of such a guide unit in principle representations. While Figure 3a shows an oblique view of the guide unit 8, Figure 3b shows a view of the guide unit 8 in the longitudinal direction X. Figure 4, comprising Figures 4a, 4b and 4c, shows several principle representations of a further embodiment of such a guide unit 8. The guide units 8 shown in Figures 3 and 4 have in common that they are each made of a sliding material and have mounting openings 80, by means of which they can be fixed, for example by means of screws, to a carriage body of a carriage 2. The guide units 8 each have a guide receptacle 82, which is designed as a passage through the guide unit 8 andin the realized slide, forms the guide receptacle of the slide. The corresponding slide body, not shown here, has an opening which, when the guide unit is mounted, is aligned with the guide receptacle or the passage 82, so that a guide section of a rail designed as a spindle can extend through the passage or guide receptacle 82 and the opening of the slide body. The opening of the slide body is preferably larger than the clear cross section of the guide receptacle 82, preferably it is at least 1.2 times, in particular at least 1.5 times the clear cross section of the guide receptacle 82. The guide units 8, which are shown in Figures 3 and 4, each have stop sections 821 and flushing recesses 820. They differ in that the flushing recesses in the guide unit according to Figure 3 are designed as flushing grooves, whereas the flushing recesses820 of the guide unit 8 according to Figure 4 are designed as through openings. While the guide unit 8 according to Figure 3 has a particularly high stability, the guide unit 8 according to Figure 4 is particularly easy to rinse. In Figure 5, comprising Figures 5a, 5b and 5c, a further embodiment of an arrangement 1 according to the invention is shown schematically in various principle representations. While Figure 5a shows an oblique view of the arrangement 1, Figure 5b shows a view of the arrangement 1 perpendicular to the longitudinal direction X and Figure 5c shows a section through the arrangement 1, the section plane of which runs perpendicular to the longitudinal direction X. The arrangement shown in Figure 5 is in the operating state. The arrangement 1 has two guide sections 4, 5, each designed as a smooth shaft, in the present case as a round shaft. The carriage 2 has two guide receptacles 24, 25, each corresponding to exactly one of them assignedof the guide sections 4, 5 are formed. In the present case and generally advantageously, the guide sections 4, 5 are identically formed and the guide receptacles 24, 25 are identically formed. The rail of the arrangement according to Figure 5 has, in addition to the guide sections 4, 5, which are manufactured as separate components, a connecting component 9, by which the guide sections 4, 5 are connected to one another. The connecting component 9 has an underside, by means of which it is intended to be mounted on a flat surface of a component, wherein it is beveled relative to the plane on all sides that it has outside the underside, so that a cleaning fluid can flow off the connecting component particularly well. In the present case and generally particularly advantageously, the connecting component has a screw, by means of which it can be fastened to a component, wherein the screw is passed through an opening in the connecting component andA seal is provided between the opening and the screw to prevent dirt from penetrating between the screw and the opening boundary. Furthermore, seals are generally preferred according to the invention between the connecting component 9 and each of the guide sections 4, 5, so that the penetration of contaminants into a space between the connecting component 9 and the guide sections 4, 5 is effectively prevented. In the embodiment according to Figure 5, the guide receptacles 24, 25 of the carriage 2 and the guide sections 4, 5 are each smooth, so that the carriage 2 can be moved along the rail in the longitudinal direction X with very little friction. The carriage 2 can thus be driven separately, for example by hand, and is not driven by a spindle, as provided in the embodiment according to Figure 1. A particularly advantageous feature of the carriage 2 in the embodiment according to Figure 5 is the provision of flushing openings.21 on each transverse side, which delimit the carriage 2 in a transverse direction running perpendicular to the longitudinal direction X, which is generally advantageous according to the invention. The flushing openings 21 are evident from the combined view of Figures 5a, 5b and 5c and are explained in particular below with reference to Figures 6 and 7, each of which shows an embodiment of a carriage of the arrangement according to Figure 5. From each of the flushing openings 21, a flushing channel extends with a component along the transverse direction to the clear cross-section of one of the guide receptacles 24, 25 and opens into the clear cross-section of the respective guide receptacle 24, 25. This ensures particularly good flushability of the guide receptacle and thus particularly good flushability of the entire arrangement, since cleaning fluid can pass through the flushing openings 21 into the flushing channel 210, from there into the respective guide receptacle 24, 25.can and from there flow over the guide section 4, 5 and effect a corresponding cleaning. Figure 6, comprising Figures 6a, 6b and 6c, shows an embodiment of a carriage 2 which is suitable for the arrangement 1 according to Figure 5. Figure 7, comprising Figures 7a and 7b, shows a further embodiment of a carriage 2 which is suitable for an arrangement 1 according to Figure 5. The various embodiments differ in the design of the rinsing recesses of their guide receptacles 24, 25. Figure 6a shows an oblique view of the first embodiment of the carriage 2, Figure 6b shows a plan view of this carriage 2 perpendicular to the longitudinal direction X, and Figure 6c shows a cross-section which runs with its sectional plane perpendicular to the longitudinal direction X. Figure 7a shows a plan view of the second embodiment of a carriage 2 perpendicular to the longitudinal direction X, Figure 7b shows a cross-section of this secondEmbodiment, the sectional plane of which runs perpendicular to the longitudinal direction X. It can be seen from the figures that in each embodiment, the flushing opening 21 extends with its longitudinal extension length over more than 30% and less than 70%, in particular less than 60%, in particular less than 50% of the longitudinal extension length of the carriage 2, which is generally advantageous according to the invention. The flushing channel 210 has a clear cross-section, the longitudinal extension length of which extends continuously over at least 20%, in particular 30% and preferably over less than 70%, in particular less than 60%, in particular less than 50% of the longitudinal extension length of the carriage 2, starting from the flushing opening 21 to the guide receptacle 23, 24, which is generally advantageous according to the invention. The flushing channel 210 opens into the respective guide receptacle 24, 25, wherein, in accordance with the invention, it leads into at least two, in particular exactly two flushing recesses of therespective guide receptacle 24, 25. The carriage 2 further has a recess 22 which is designed to receive a section of the explained connecting component 9, in this case to receive the screw of the connecting component 9, wherein the recess 22 runs continuously through the carriage 2 in the longitudinal direction X and the wall formed by the carriage 2 which delimits the recess 22 is spaced at every point by more than 2 mm, in particular by more than 3 mm, in particular by more than 4 mm from the connecting component in the operating state, while the connecting component 9 is located within the longitudinal extent of the carriage 2, so that reliable, effective cleaning of the arrangement 1 is always ensured.

[0002] Ma / mb March 26, 2024 Applicant: igus GmbH 51147 Cologne Flushable carriage-rail arrangement List of reference symbols 1 Arrangement 2 Carriage 3 Guide section 4 Guide section 5 Guide section 6 Fixing body 7 Fixing body 8 Guide unit 9 Connecting component 20 Fastening opening 21 Flushing opening 22 Recess 23 Guide seat 24 Guide seat 25 Guide seat 50 Pivot bearing 80 Mounting opening 82 Guide seat 210 Flushing channel 230 Flushing recess 231 Stop section 240 Flushing recess 241 Stop section Flushing recess Stop section Flushing recess Stop section

Claims

Ma / mb March 26, 2024 Applicant: igus GmbH 51147 Cologne Flushable carriage-rail arrangement Claims 1. Arrangement (1) comprising a carriage (2) and a rail elongated in a longitudinal direction, wherein the rail has a guide section (3, 4, 5) and the carriage (2) has a guide receptacle (23, 24, 25, 82) designed as a feedthrough, which has a clear cross-section which is delimited by a boundary wall running around an axis of the guide receptacle (23, 24, 25, 82) running parallel to the longitudinal direction, wherein in an operating state of the arrangement the carriage (2) is mounted on the rail so as to be displaceable in the longitudinal direction relative to the rail and the guide section (3, 4, 5) of the rail is received in the guide receptacle (23, 24, 25, 82) of the carriage and the boundary wall for each rotational position of the guide section (3, 4, 5) around the axis of the guide receptacle (23, 24, 25, 82) a stop for a movement of the guide section (3, 4,5) relative to the guide receptacle (23, 24, 25, 82) in any direction perpendicular to the longitudinal direction, characterized in that the boundary wall has a plurality of stop sections (231, 241, 251, 821) which are arranged around the axis of the guide receptacle, (23, 24, 25, 82) are arranged in a distributed manner and form the stop, wherein in the boundary wall between each two adjacent stop sections (231, 241, 251, 821) there is provided in each case a flushing recess (230, 240, 250, 820) which can be flushed with cleaning liquid over its entire length in the longitudinal direction in the operating state, and / or that the guide section (3, 4, 5) has an outer side which is designed to correspond to the stop formed by the boundary wall of the guide receptacle (23, 24, 25, 82), wherein the outer side has stop regions arranged distributed around the axis of the guide receptacle (23, 24, 25, 82), by the abutment of which stop regions the said movement of the guide section (2, 3, 4) relative to the guide receptacle (23, 24, 25, 82) for each Rotational position of the guide section (3, 4, 5) around the axis of the guide receptacle (23, 24, 25, 82) is limited,wherein between each two adjacent stop regions, a flushing recess is provided which, in the operating state, can be flushed with cleaning fluid over its entire length in the longitudinal direction.

2. Arrangement (1) according to claim 1, characterized in that the guide receptacle (23, 24, 25, 82) is formed by a slide part of the slide (2) which is made of sliding material, in particular of a tribopolymer, wherein the slide part is designed as a rigid body section of the slide (2) which, due to its rigidity, determines a position of the slide (2) relative to the rail in the operating state.

3. Arrangement (1) according to claim 1 or 2, characterized in that, in each case two adjacent flushing recesses (230, 240, 250) are spaced apart from one another by a stop section (231, 241, 251, 821) arranged between them in a direction of rotation about the axis of the guide receptacle (23, 24, 25, 82), wherein the flushing recesses (230, 240, 250, 820) each extend in the direction of rotation over an angular range which is at least 0.75 times, in particular at least 1.0 times, in particular at least 1.5 times, in particular at least 2 times an angular range over which the stop section (231, 241, 251, 821) arranged between them in the direction of rotation extends, and / or in each case two adjacent flushing recesses are spaced apart from one another by a stop section arranged between them in a direction of rotation about the axis of the guide receptacle wherein the flushing recesses extend in the direction of rotation over an angular range which is at least 0.75 times,in particular at least 1.0 times, in particular at least 1.5 times, in particular at least 2 times an angular range over which the stop region arranged between them in the direction of rotation extends.

4. Arrangement (1) according to one of the preceding claims, characterized in that the flushing recesses (230, 240, 250, 820) are each designed as flushing grooves and have a groove bottom which is formed by the boundary wall and which connects the stop sections (231, 241, 251, 821) adjacent to the respective flushing recess (230, 240, 250, 820) to one another, wherein in particular in a direction perpendicular to the axis, the guide receptacle (23, 24, 25, 82) through the groove bottom, the groove bottom at its point furthest away from the axis of the guide receptacle (23, 24, 25, 82) is spaced by at least 2 mm, in particular at least 3 mm, from precisely the point at which the flushing groove adjoins a stop section (231, 241, 251, 821) adjacent thereto and / or that the flushing recesses are each designed as flushing grooves and have a groove bottom which is formed by the outer side and which connects the stop regions adjacent to the respective flushing recess to one another, wherein in particular in a direction perpendicular to the axis of the guide section (3, 4, 5) through the groove bottom, the groove bottom at its point closest to the axis of the guide receptacle (23, 24, 25, 82) is spaced by at least 2 mm, in particular at least 3 mm, from precisely the point at which the Flushing groove borders on a stop area adjacent to it. 5.Arrangement (1) according to claim 4, characterized in that the flushing recesses (230, 240, 250, 820) each have a flushing recess cross-section of at least 2 mm², in particular at least 3 mm², in particular at least 5 mm² over the longitudinal extension length of the guide receptacle (23, 24, 25, 82) and / or the flushing recesses (230, 240, 250, 820) together form a common flushing cross-section over the longitudinal extension length of the guide receptacle (23, 24, 25, 82), which is at least 10%, in particular at least 20%, in particular at least 30% of a cross-section enclosed between the stop sections (231, 241, 251, 821), wherein. the cross section enclosed between the stop sections (231, 241, 251, 821) is delimited by a line running around the axis of the guide receptacle (23, 24, 25, 82), which line is formed by the side of the stop sections (231, 241, 251, 821) facing the axis and by connecting lines connecting adjacent stop sections (231, 241, 251, 821) in a straight line, and / or that the flushing recesses each have a flushing recess cross section of at least 2 mm², in particular at least 3 mm², in particular at least 5 mm² over the longitudinal extension length of the guide section (3, 4, 5) and / or the flushing recesses together form a common flushing cross section over the longitudinal extension length of the guide section (3, 4, 5), which is at least 10%, in particular at least 20%, in particular at least 30% of the cross-section of the guide section (3, 4, 5). 6.Arrangement (1) according to one of the preceding claims, characterized in that the flushing recesses (230, 240, 250, 820) have a width that increases along a direction of extension extending perpendicular to the axis of the guide receptacle (23, 24, 25, 82) away from this axis, and / or that the flushing recesses have a width that increases along a direction of extension extending perpendicular to the axis of the guide receptacle towards this axis.

7. Arrangement (1) according to one of the preceding claims, characterized in that the boundary wall and / or the outer side of the guide section (3, 4, 5) has a width that is larger than or equal to the outer side of the guide section (3, 4, 5). an axis of curvature which runs parallel to the axis of the guide receptacle (23, 24, 25, 82) and has a curved course, wherein it has a radius of curvature of at least 3 mm at every point.

8. Arrangement (1) according to one of the preceding claims, characterized in that the rail has at least one further guide section (3, 4, 5) and the carriage (2) has at least one further guide receptacle (23, 24, 25, 82) designed as a further passage, wherein the further guide receptacle (23, 24, 25, 82) has a clear cross-section which is delimited by a boundary wall running around an axis running parallel to the longitudinal direction of the further guide receptacle (23, 24, 25, 82), wherein in the operating state of the arrangement the further guide section (3, 4, 5) of the rail is received in the further guide receptacle (23, 24, 25, 82) of the carriage (2) and the boundary wall of the further guide receptacle (23, 24, 25,82) forms a stop for the movement of the guide section (3, 4, 5) relative to the further guide receptacle (23, 24, 25, 82) in each direction perpendicular to the longitudinal direction, wherein the boundary wall of the further guide receptacle (23, 24, 25, 82) has a plurality of stop sections (231, 241, 251, 821) which are arranged distributed around the axis of the further guide receptacle (23, 24, 25, 82) and form the stop of the further guide receptacle (23, 24, 25, 82), wherein in the boundary wall of the further guide receptacle (23, 24, 25, 82) between each two adjacent stop sections (231, 241, 251, 821) a flushing recess (230, 240, 250, 820) 9. Arrangement (1) according to claim 8, characterized in that the guide receptacle (23, 24, 25, 82) and the further guide receptacle (23, 24, 25, 82) are formed by a one-piece carriage body or by a one-piece guide component fastened to the carriage body.

10. Arrangement (1) according to one of claims 8 or 9, characterized in that the guide section (3, 4, 5) and the further guide section (3, 4, 5) are formed by a different, separately manufactured component, wherein in particular the two components, each forming one of the guide sections (3, 4, 5), are connected to one another by a connecting component (9), wherein in particular the connecting component (9) has an underside and, on all outer surfaces provided outside the underside, has exclusively surfaces that are beveled to a predetermined plane. 11.Arrangement (1) according to one of the preceding claims, characterized in that the stop sections (231, 241, 251, 821) together form an internal thread, wherein the guide section (3, 4, 5) is designed as a spindle with an external thread corresponding to the internal thread, and / or that the stop has an internal thread and the guide section (3, 4, 5) is designed as a spindle with an external thread corresponding to the internal thread, which is formed by the stop regions, wherein in particular the external thread has a thread diameter and in the operating state between the. Guide section (3, 4, 5) and the guide receptacle (23, 24, 25, 82), in every possible rotational position of the guide section (3, 4, 5) relative to the guide receptacle (23, 24, 25, 82), a clear cross-section is formed between the guide section (3, 4, 5) and the guide receptacle (23, 24, 25, 82), which has at least 20% of a circular area whose diameter corresponds to the thread diameter.

12. Arrangement (1) according to one of claims 8 to 10 and in particular according to claim 11, characterized in that the further guide section (3, 4, 5) is designed as a smooth shaft, wherein in particular the rail has a first and a second further guide section (3, 4, 5), each of which is designed as a smooth shaft, wherein in particular the guide section (3, 4, 5) is arranged between the first and second further guide section (3, 4, 5). 13.Arrangement (1) according to claim 12, characterized in that the arrangement (1) has a first fixing body (6) and a second fixing body (7) which are spaced apart from one another in the longitudinal direction, wherein the guide section (3, 4, 5) and the further guide section (3, 4, 5) run in the longitudinal direction from the first to the second fixing body (6, 7) and the carriage (2) is arranged between the first and second fixing bodies (6, 7) and can be moved in the longitudinal direction between the first and second fixing bodies (6, 7) by rotating the guide section (3, 4, 5) designed as a spindle, wherein in particular the carriage (2). Has mounting openings (80) to which an apparatus can be fastened by means of screws.

14. Arrangement (1) according to one of the preceding claims, characterized in that the carriage (2) has a carriage body which has a longitudinally continuous opening with an opening cross-section, wherein a guide unit (8) is fastened to the carriage body, which forms the guide receptacle (23, 24, 25, 82), wherein the cross-section of the guide receptacle (23, 24, 25, 82) is arranged in alignment with the opening cross-section, wherein in particular the carriage body is made of a first material and the guide unit (8) is made of a second material, in particular of sliding material. 15.Arrangement (1) according to one of the preceding claims, characterized in that the carriage (2) has a flushing opening (21) on at least one side which delimits the carriage (2) in a transverse direction running perpendicular to the longitudinal direction, from which flushing opening a flushing channel (210) extends in the transverse direction as far as the guide receptacle (23, 24, 25, 82), wherein in particular the flushing opening (21) and the flushing channel (210) are spaced from both longitudinal ends of the carriage (2) and / or the flushing channel (210) opens into at least one, in particular into at least two adjacent, of the flushing recesses (230, 240, 250, 820) and / or flushing cutouts.

16. Arrangement (1) according to claim 15, characterized in that. the rinsing opening (21) extends over at least 20%, in particular over at least 30%, of the longitudinal extension length of the carriage (2), and / or that the rinsing channel (210) opens into the guide receptacle (23, 24, 25, 82) at an opening point and has a clear height at the opening point in a vertical direction running perpendicular to the longitudinal direction, which is at least 0.5 times the clear height of the guide receptacle (23, 24, 25, 82) in this vertical direction.

17. Use of an arrangement (1) according to one of the preceding claims for the production of foodstuffs, wherein at least one ingredient and / or an apparatus for producing the foodstuffs are transported with the carriage (2), wherein in particular the arrangement (1) is cleaned with cleaning fluid between two successive phases in which foodstuffs are produced, while the arrangement (1) is in the operating state.

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