Rotor and textile machine

Abstract

The invention relates to a rotor (10) for a textile machine, in particular a rotor spinning machine, comprising a rotor wall (3) having a fiber sliding surface (9). In order to improve flexibility in use, increase stability of the rotors, and reduce resource consumption, the rotor for a textile machine, in particular a rotor spinning machine, is provided with a rotor base (1) formed integrally with a groove (4), wherein the rotor wall (3) and the rotor base are separate components, and wherein the rotor wall and the rotor base are arranged relative to one another such that the fiber sliding surface opens into the groove.

Description

[0001] The invention relates to a rotor. The invention relates to a textile machine. The invention relates to a method for forming a rotor. The invention relates to a use of a rotor and / or a textile machine.

[0002] Rotors for textile machines, in particular (open-end) rotor spinning machines, are known in the state of the art.

[0003] DE 198 48 118 A1 describes a spinning rotor as a rotor for an open-end spinning device, which consists of at least three rotor parts. A first rotor part has a fiber sliding wall (also referred to as a fiber sliding wall - having a fiber sliding surface) and is connected to a second rotor part, formed by the rotor base attached to a rotor shaft, in such a way that they fix between them the third rotor part, a ring element, which accommodates at least part of the fiber collecting groove.

[0004] DE 196 51 419 A1 describes a one-piece OE spinning rotor (open-end spinning rotor) as a rotor which has a fibre collecting groove (also referred to as groove for short).

[0005] DE 198 46 770 A1 describes a rotor for open-end spinning machines, consisting of a rotary-driven, rotationally symmetrical, pot-shaped housing, essentially open on one side, which, in cross-section, forms a radially outwardly widening inlet slope, which opens into a rotor groove near the housing bottom. To avoid having to replace the entire rotor if the rotor groove becomes worn or if the rotor is worn overall, the rotor is designed to be at least two-part, consisting of an upper rotor section and a lower rotor section. The two parts are detachably connected to one another, and a replaceable wear ring forming the rotor groove is arranged between the two parts.

[0006] JP H08 311727 A, EP 0 170 877 A1, CN 104 762 703 A disclose two-part rotors with a split fiber collecting groove.

[0007] The rotors described here exhibit particular difficulties with flexibility for specific applications, coupled with difficulties with the stability of the rotors for specific applications. This leads to increased resource consumption, for example, due to the necessary replacement of parts of the rotor, the entire rotor, or the downtime of a corresponding rotor spinning machine.

[0008] The object of the invention is therefore to improve flexibility in use, increase stability of the rotors and reduce resource consumption.

[0009] The problem is solved by a rotor having the features of claim 1. The problem is solved by a textile machine having the features of claim 11. The problem is solved by a method having the features of claim 12. The problem is solved by a use having the features of claim 13.

[0010] Advantageous embodiments of the invention are the subject of the subclaims.

[0011] According to one aspect, a rotor is formed in at least two pieces and is intended for a textile machine. The textile machine can be a rotor spinning machine, in particular an open-end rotor spinning machine. The rotor has a rotor wall. The rotor wall has a fiber sliding surface. The rotor has a rotor base. The rotor base is formed in one piece with a groove. The rotor wall and the rotor base are separate components. The rotor wall and the rotor base are arranged or can be arranged relative to one another in such a way that the fiber sliding surface opens into the groove.By forming a rotor wall, which has the fiber sliding surface, as a separate component that can be presented separately from a rotor base in order to be connected to a rotor base that has the groove, it is possible to specifically select the properties of the two functional surfaces, fiber sliding surface and groove, for a specific use in order to specifically adapt the properties for the use to a specific need.

[0012] The groove here refers to a fiber collection groove. A fiber ring forms in the fiber collection groove during spinning. The groove is a depression that extends along the inner circumference of the rotor. The groove is therefore bordered on both sides of the groove base, or has two lateral borders. According to the invention, the rotor base is formed integrally with the groove, in particular with the entire groove. The rotor base is thus also formed integrally with the two lateral borders of the groove. The two lateral borders of the groove are therefore also made of one piece, or the groove itself is one piece.

[0013] In a rotor spinning process, it is particularly intended to completely dissolve a fiber sliver and, in particular, to completely separate the fibers transported therein, in particular to further draw them and spin them into a yarn via the fiber ring. The fibers can move along the fiber slide surface in the direction of the groove in the rotor. In this case, the fibers are in particular already separated or slide down the fiber slide surface as individual fibers. The stress on the fiber slide surface is significantly lower than on the groove. In one embodiment, it can be advantageous if the fiber slide surface is designed to be less wear-resistant than the rotor base, which has the groove.

[0014] In particular, it can be provided that the surface of the fiber sliding surface is rougher than, for example, the surface of the groove. A rougher surface of a fiber sliding surface creates friction that can slow the fibers as they slide. This can increase fiber stretching. This is based in particular on the fact that one end of the fiber, which is arranged closer to an inlet opening of the rotor during sliding, is subjected to a force that is different from the force experienced by the other end of the fiber, which is arranged axially further inwards during sliding. The roughness of the surface can therefore be used to influence, in particular, the stretching properties of the fibers of a yarn.In particular, it is intended that the friction is not increased by the choice of the surface to such an extent that the rotor functions largely as a centrifuge, i.e. the fibers no longer slide axially inwards over the surface in the rotor, towards the groove, in a time that is appropriate for a spinning process.

[0015] In particular, a groove can be provided with a particularly smooth design. Alternatively, the groove can be provided with a roughness that supports the relative twisting of the fiber ring that can form within it to a (forming) yarn in a take-off from the rotor, which is particularly centrally located. This can influence the strength of the yarn.

[0016] The requirements of the two functional surfaces therefore differ from one another. The described design of a rotor, as a hybrid rotor consisting of at least two components: a rotor wall with a fiber sliding surface and a rotor base with a groove, thus makes it possible to adapt the properties of the two functional surfaces to a planned application or use, for example, if other fibers and / or fiber blends are to be spun. This adaptation (according to a pre-selection of components with corresponding functional surfaces) can be made with regard to the surfaces of the functional surfaces, as well as with regard to their geometry.

[0017] For example, an inclination angle of the fiber sliding surface can be adjusted with respect to the axis of rotation. The fiber sliding surface extends in particular in such a way that a rotor wall widens axially inwards (i.e. towards the groove in the assembled state, in particular away from an opening in the component that can have or form the rotor wall) and thus has its widest area in the region of the transition from the fiber sliding surface to the groove. The straight lines, which can be conceptually arranged axially outwards, form a cone apex intersection point, which can be defined by an inclination angle on the (extension of the) axis. This can be changed in various embodiments in order to influence the sliding behavior of the fibers.

[0018] The groove can be designed as an undercut such that a recess is formed as a groove running around the rotor. This can, in particular, point radially outwards in a pointed manner. This shape is particularly easy to manufacture and therefore cost-effective. Friction can have an adverse effect on the fiber ring, which is pushed outwards by rotation (centrifugal force). Alternatively, the groove can be provided with a rounded shape that can replicate a planned fiber ring in a possible outer diameter. This allows corresponding friction to act more evenly on the fiber ring.

[0019] In this context, it is particularly provided that the groove can be provided as part of a rotor base. The fiber ring can run over the rotor base, in particular extending out of the groove to the discharge. Alternatively or additionally, it can be provided that the rotor base is (largely) designed as a disk body. Alternatively or additionally, the rotor base can be designed as a plate. The component that can form the rotor base can have an edge in the radial direction, which can be arranged higher (or correspondingly lower) or delimited in a horizontal arrangement, such as a central region (a central surface) of the plate. In this case, a recess can be provided in the plate (or correspondingly also in the disk) in particular in a centrally arranged region in order to be able to arrange a holding part, as described elsewhere. The disk and / or plate is / are to be realized in a particularly resource-saving manner.The particularly one-piece or material-identical design of the rotor base and the functional surface of the groove makes it possible to increase the stability of the groove. This is particularly true compared to devices in which the groove can be arranged via a ring component (also referred to as a ring element or ring). These ring components break more easily, especially in embodiments with ceramic or other materials that are more brittle than metals, metal alloys, or coated metals, compared to a disc- and / or plate-like rotor base. In this case, the rotor base in particular serves as structural support for the groove, but still allows for a design that is separate from the rotor wall and the fiber sliding surface.

[0020] According to one aspect, the rotor wall can be arranged so as to be inserted into the rotor base. As a result, the rotor wall can be at least partially encompassed by the rotor base (in an assembled state), in particular in a direction of rotation about the axis of rotation. Alternatively, the rotor base can be inserted into the rotor wall. As a result, the rotor base can at least partially encompass the rotor wall, in particular in a direction of rotation about the axis of rotation. This makes it possible, in particular, to form connections that are (dimensionally) stable under the high rotational speeds of the rotor and, in particular, can be designed to be low in imbalance or even unbalance-free.

[0021] According to one aspect, a holding part can be arranged to rotatably mount the rotor. This allows a combination of the aforementioned components with the functional surfaces provided for a rotor spinning process to be held by a further component. This can serve, in particular, as an adapter piece to connect various configurations of the combinations of rotor walls and rotor bases described elsewhere to a rotor spinning machine. The choice of material and / or geometry can also be adapted to the connection in order to perform rotation with as little wear as possible.

[0022] According to one aspect, the holding part can be designed to be arranged in such a way as to receive a region of the rotor base. This region can in particular be located on a side of the rotor base that is arranged facing away from the rotor wall, in particular from the side facing away from an inner region of the rotor. Here and elsewhere, an inner region of a rotor can be the region that can come into contact with fibers during slipping and / or that can come into contact with a forming yarn. As a result, the rotor base can be contacted directly, at least in sections. It can also be provided that the rotor base is received by the holding part, in particular over largely the entire base area that is arranged facing away from a rotor (inner) base. As a result, the holding part can support the rotor base in particular uniformly.

[0023] Alternatively, the holding part can be designed to be arranged in such a way as to contact a region of the rotor base and a region of the rotor wall. This region (or a part thereof) can in particular be arranged on a side of the rotor base that faces away from the rotor wall. Alternatively or additionally, the region (or a part of the region) can lie on a side of the rotor wall that faces away from the rotor base, in particular on an outward-facing side, in particular an outer side of the rotor. The region that contacts the rotor wall can in particular be a radially outer region that can in particular be received by a part of the holding part. As a result, the rotor wall can also be supported by the holding part, and a connection between the components can be reinforced.

[0024] According to one aspect, at least one of the rotor base or the fiber sliding surface can comprise at least one material selected from a ceramic, a polymer, a polymer composite, a fiber-reinforced plastic, a metal, steel, aluminum, a boron-coated metal, boron-coated steel, boron-coated aluminum, a diamond-coated material, a diamond-coated metal, diamond-coated steel, diamond-coated aluminum, or a nickel-plated metal, nickel-plated steel, or nickel-plated aluminum. This allows adaptations to the different requirements with regard to the two functional surfaces, in particular through different material combinations of the rotor wall and rotor base, as described elsewhere.

[0025] However, a rotor base with an integrated groove made of ceramic is particularly preferred. Ceramic guarantees good protection of the groove against wear, and the one-piece design with the rotor base ensures reliable stability of the otherwise rather brittle ceramic, as already described elsewhere.

[0026] Ceramics should, if possible, only be subjected to compressive stresses and not tensile stresses. A retaining part that supports a portion of the rotor base, or that supports a portion of the rotor base and a portion of the rotor wall, as described elsewhere, is particularly suitable in conjunction with a ceramic rotor base, as the rotor wall is only subjected to compressive stresses and tensile stresses are avoided. In contrast, retaining parts that are arranged in a recess in the rotor base are suitable for metal rotor bases.

[0027] According to one embodiment, a rotor can be designed as a hybrid rotor. A ceramic hybrid rotor can be provided. The rotor base with an integrated groove is designed, in particular, as a closed base body, onto which the fiber sliding surface of a rotor wall and an axle can be pressed as a rotation device (or as a holding part). The rotor wall and the holding part each comprise, in particular, the rotor base, which is designed, in particular, as a ceramic component, so that only compressive stresses act on the ceramic.

[0028] According to one embodiment, the rotor base with integrated groove can be made of steel, which can be hardened and coated (e.g., boronized). The fiber sliding surface can be made of steel or aluminum and can be coated, for example, diamond-coated. However, it no longer needs to be boronized. This is not absolutely necessary for the fiber sliding surface. Boronization occurs particularly at temperatures so high that stresses can be released, which can lead to distortion, especially in thin-walled components.

[0029] In some embodiments, the groove or rotor base can be designed primarily to provide wear protection. For this purpose, they can have a suitable surface finish, which can be determined by the appropriate choice of material. For example, in some embodiments, a diamond coating can be provided.

[0030] The fiber sliding surface can be designed to enable optimal sliding of the fibers into the groove. For this purpose, it can be given a surface quality that does not necessarily correspond to the surface quality of the groove. Alternatively, the fiber sliding surface can comprise or consist of fiber-reinforced plastic. Further alternatively, the fiber sliding surface can comprise or consist of a high-strength material that can withstand the strength requirements in the operating state, in particular at 150,000 rpm, furthermore in particular for 1,000 hours of use, furthermore in particular for 5,000 hours of use, furthermore in particular for 10,000 hours of use. In embodiments, a diamond coating can be provided in particular in order to be able to form a correspondingly hard material.

[0031] According to one aspect, at least two of the parts, selected from the rotor wall, the rotor base, and the holding part, can be designed to be connectable to one another. The connection is in particular selected from pressing, screwing, gluing, or welding. Alternatively or additionally, at least two of the parts can be connected to one another via a magnetic interaction. This allows, on the one hand, fixed, irreversible connections to be formed if, for example, later disassembly of the rotor, for example to replace a component, is no longer intended. Alternatively, fixed connections can be formed that can be detachable again. This makes it possible to implement the rotor to be disassembled again later, for example to remove, replace, and / or recycle individual components.

[0032] According to one aspect, a nose, which is arranged in particular on the rotor wall, can be formed in a direction away from an opening, in particular the inlet opening, of the rotor wall in an assembled state, at the transition from the fiber sliding surface to the groove. This can prevent fiber jamming at the transition from the fiber sliding surface to the groove, which could have a negative impact on the rotor spinning process. The nose preferably covers the transition from the fiber sliding surface to the groove.

[0033] A nose is understood in particular to mean that the fiber glide wall merges into an area that is arranged radially further outwards, which can create an area that cannot be contacted by fibers at the transition to the groove. In other words, this means that there can be an area of ​​the groove that is arranged axially (in relation to the course of the rotation and / or symmetry axis) above (i.e., towards the inlet opening of the rotor) and, in particular, radially further outwards, which is overhanged by the nose. As a result, the fibers slide directly from the tip of the nose into the groove, where they bring about the formation of the fiber ring and do not stick to the rotor.

[0034] The nose tip is in particular the point or area of ​​the nose that is furthest away in one direction from an opening in the rotor wall in an assembled state.

[0035] According to one aspect, the nose can protrude between 0.01 and 0.5 mm into the groove. Alternatively, the nose can protrude between 0.1 and 0.4 mm into the groove. Alternatively, the nose can protrude between 0.2 and 0.3 mm into the groove. Alternatively, the nose can protrude (as precisely as possible) by 0.25 mm into the groove. This allows a nose to be geometrically adapted to the fiber or fiber blend to be used in a rotor spinning process.

[0036] In this context, "protrusion" is to be understood in particular as meaning that the measurement is taken from the point or region of the groove (in a section along the rotation axis) listed elsewhere, located above the tip of the nose in a direction parallel to the axis of symmetry and / or rotation. In other words, the point or region from which the measurement is taken can be the point from which the nose protrudes freely up to the tip of the nose.

[0037] In one aspect, the distance in the radial direction between the transition point of the fiber slip surface and the radially outermost point of the groove can be between 0.5 and 1.5 mm. Alternatively, the distance in the radial direction between the transition point of the fiber slip surface and the radially outermost point of the groove can be between 0.6 and 1.3 mm. Alternatively, the distance in the radial direction between the transition point of the fiber slip surface and the radially outermost point of the groove can be between 0.65 and 1.27 mm. Alternatively, the distance in the radial direction between the transition point of the fiber slip surface and the radially outermost point of the groove can be 0.7 mm. Alternatively, the distance in the radial direction between the transition point of the fiber slip surface and the radially outermost point of the groove can be (most exactly) 0.76 mm.Alternatively, the distance in the radial direction between the transition point of the fiber slip surface and the radially outermost point of the groove can be (almost exactly) 1.26 mm. This allows a transition area between the nose and the groove, and alternatively or additionally also the shape and dimensions of the groove, to be adapted to a rotor spinning process to be carried out, for example when using a specific fiber and / or a specific fiber blend. Alternatively or additionally, this can also influence throughput. Alternatively or additionally, this can also influence the thickness of a yarn to be produced.

[0038] According to one aspect, the fiber sliding surface can have a structure. This can in particular be selected from a dot structure, a wave structure, a structure having partial longitudinal grooves or a structure having transverse grooves. Mixed forms can also be provided. In this case, the structures are in particular designed and arranged in such a way as to influence the sliding behavior of the fibers on the fiber sliding wall, in addition to the choice of material or any microstructuring. In particular, the structures can be used to extend the fiber sliding length and thus in particular to extend the time required for the fiber to slide down the fiber sliding wall. As already described elsewhere, this influences the degree of stretching of the individual fibers and thus the yarn to be spun.

[0039] According to an independent aspect, the object is achieved in particular by a textile machine having a rotor as described elsewhere.

[0040] The textile machine is in particular a rotor spinning machine, further in particular an open-end rotor spinning machine. The textile machine can be described by the features, functions and advantages described elsewhere, as they are embodied with reference to the rotor. A corresponding description of the aspects can also be made across category boundaries - device, system, method and use. In this regard, the features, functions and advantages of the rotor listed elsewhere can therefore be used to describe the textile machine, the method for forming a rotor or the use of the rotor and / or the textile machine. The same applies vice versa. The rotor can thus be described by the features, functions and advantages of the textile machine, the method for forming a rotor or the use of the rotor and / or the textile machine.For the sake of readability and compactness, we will not repeat all the features, functions and advantages, as well as the possible combinations that are conceivable and therefore possible in this regard.

[0041] According to an independent aspect, the object is achieved by a method for forming a rotor, as described elsewhere. The method comprises the step of providing a rotor wall. The method comprises the step of providing a rotor base. The method comprises the step of connecting the rotor wall and the rotor base.

[0042] The method can be described by the features, functions, and advantages described elsewhere, as they are embodied in relation to the rotor or the textile machine. A corresponding description of the aspects can also be made across category boundaries - device, system, method, and use. In this regard, the features, functions, and advantages of the rotor or the textile machine listed elsewhere can be used to describe the method for forming a rotor or the use of the rotor and / or the textile machine. The same applies vice versa. The method for forming a rotor can thus be described by the features, functions, and advantages of the textile machine, the rotor, or the use of the rotor and / or the textile machine.For the sake of readability and compactness, we will not repeat all the features, functions and advantages, as well as the possible combinations that are conceivable and therefore possible in this regard.

[0043] According to an independent aspect, the object is achieved in particular by using a rotor. The rotor can be designed as described elsewhere. Alternatively or additionally, a textile machine can be used as described elsewhere. The textile machine can have a rotor as described elsewhere.

[0044] The use can be described by the features, functions and advantages described elsewhere, as they are set out in relation to the rotor or the textile machine and / or the method. A corresponding description of the aspects can also be made across category boundaries - device, system, method and use. In this regard, the features, functions and advantages of the rotor or the textile machine listed elsewhere and / or the features, functions and advantages of the method can be used to describe the use of the rotor. The same applies vice versa. The method for forming a rotor, the textile machine and / or the rotor can be described by the features, functions and advantages of using the rotor and / or the textile machine.For the sake of readability and compactness, we will not repeat all the features, functions and advantages, as well as the possible combinations that are conceivable and therefore possible in this regard.

[0045] In summary, and to put it another way, in one embodiment a rotor can be designed in particular as a hybrid rotor. The rotor base can be designed as a disc-like or plate-like rotor base with an integrated groove. The rotor base with the integrated groove can be made of steel, which can be hardened and coated (e.g. boronized). The axis around which a rotational movement can be imparted is in particular pressed into the rotor base. The rotor wall, which can have the fiber sliding surface, can be pressed on from the outside or pressed in from the inside. Other connections are possible, such as screwing, gluing or welding. A magnetic holder is also possible. The fiber sliding surface can be made of steel or aluminum and can be coated, for example diamond-coated. However, in particular it no longer needs to be boronized. This is not absolutely necessary for the fiber sliding surface.Boronizing occurs at temperatures so high that stresses can be released, which can lead to distortion, especially in thin-walled components. This can be avoided with the exemplary embodiment described here. At the transition from the fiber sliding surface to the groove, the fiber sliding surface should protrude beyond the groove in such a way that fiber jamming is avoided.

[0046] The functional surfaces of the groove and the fiber sliding surface, which are important for yarn production, are assigned to two different components, each of which can have a surface adapted to its respective function. The groove can be designed primarily to protect against wear. For this purpose, it can be given a suitable surface finish through the appropriate choice of material. The fiber sliding surface can be designed to enable optimal sliding of the fibers into the groove. For this purpose, it can be given a surface finish that does not necessarily correspond to the surface finish of the groove.

[0047] By separating the rotor into two components, the functional surfaces of the groove and the fiber sliding surface can be structurally separated from each other and thus can be installed or selected separately during rotor assembly. This allows the two functional surfaces to be treated separately. This opens up new possibilities for influencing the yarn that would not be possible with a single-piece production.

[0048] A nose can also be formed at the transition from the fiber sliding surface to the groove, pointing away from an opening in the rotor wall, particularly in the assembled state. By changing the protruding nose on the fiber sliding surface in the transition area to the groove, yarn production can be influenced, which can lead to possible changes in the yarn. For example, the length of the nose can be varied and / or the gap to the rotor base can be reduced or increased.

[0049] According to one embodiment, a rotor can be designed as a hybrid rotor. In this case, a ceramic hybrid rotor can be provided. In such a rotor, the rotor base can be designed as a rotor base with an integrated ceramic groove. In this case, the rotor base with the integrated groove is designed, in particular, as a closed base body, and the fiber sliding surface of a rotor wall and an axle can be pressed onto this as a rotation device (or as a holding part). The rotor wall and the holding part each comprise, in particular, the rotor base, which is designed, in particular, as a ceramic component, so that only compressive stresses act on the ceramic. Tensile stresses should be avoided as far as possible with ceramic.

[0050] At the transition from the fiber sliding surface to the groove, the fiber sliding surface can protrude, particularly relative to the groove, in such a way that no fiber jam can occur.

[0051] The rotor base, which is designed as a ceramic component, in particular as a disc-shaped and / or plate-shaped rotor base, and the rotor groove can be formed in one piece. This can be gripped from the outside. The ceramic component, which the rotor base can be designed as, can be designed as a disc. In particular, no ring component is formed, thereby enabling greater stability, which reduces the likelihood of the groove (or the component to which it is assigned) breaking.

[0052] The functional surfaces of the groove and the fiber sliding surface, which are important for yarn production, can in particular be assigned to two different components. This allows the surface important for each different function to be optimized for a use, for example in a spinning process for a specific fiber type or fiber blend. The groove can primarily be protected against wear and have a suitable surface quality in this regard (or be assigned this in a process for forming a rotor), and the fiber sliding surface can primarily be optimized for the sliding of the fibers in the groove and have an optimized surface quality in this regard (or be assigned this in a process for forming a rotor). In this case, the surface quality of the fiber sliding surface may in particular not correspond to the surface quality of the groove.

[0053] In the embodiments, the rotor wall, which has the fiber sliding surface, can be pressed into the rotor base. The connection can be designed to be free of play and / or detachable, in particular via threads or small magnets.

[0054] In embodiments, the fiber slide surface can be made of steel or aluminum. Alternatively, the fiber slide surface can comprise or consist of fiber-reinforced plastic. Further alternatively, the fiber slide surface can comprise or consist of a high-strength material that can withstand the strength requirements in the operating state, in particular at 150,000 rpm (pronounced "rounds per minute"), further in particular for 1,000 hours of use, further in particular for 5,000 hours of use, further in particular for 10,000 hours of use. In embodiments, a diamond coating can be provided, in particular, in order to form a correspondingly hard material.

[0055] In the following, embodiments of the invention are described in more detail with reference to figures, which show schematically and by way of example: Fig. 1 shows an overview of an embodiment of a rotor and a detailed view; Fig. 2A shows an overview of an embodiment of a rotor; Fig. 2B shows a detailed view of an embodiment of the rotor according to Fig. 2A ; Fig. 3A an overview of an embodiment of a rotor; Fig. 3B a detailed view of an embodiment of the rotor according to Fig. 3A ; Fig. 4A an overview of an embodiment of a rotor; Fig. 4B a detailed view of an embodiment of the rotor according to Fig. 4A ; Fig. 5A an overview of an embodiment of a rotor; Fig. 5B a detailed view of an embodiment of the rotor according to Fig. 5A ; Fig. 6A shows a representation of a structuring of a fiber sliding surface; Fig. 6B shows a representation of a structuring of a fiber sliding surface; Fig. 6C shows a representation of a structuring of a fiber sliding surface; Fig. 6D shows a representation of a structuring of a fiber sliding surface; and Fig. 7 shows an illustration of an embodiment of a method and a use; Fig. 8 shows a representation of a structuring of a fiber sliding surface; Fig. 9 shows a representation of a structuring of a fiber sliding surface; Fig. 10 shows a representation of a structuring of a fiber sliding surface.

[0056] The same reference symbols are used for elements and structures with the same function and / or similarity. Here and elsewhere, reference is made in particular to points, since the figures are described here with reference to the plane sections through the rotation axis 20. In a three-dimensional description, this particularly refers to regions and / or surfaces, or in particular to two-dimensional objects such as rings. In this regard, a region, a surface, or such a (mathematical) object in Euclidean space can also be meant when a single point is meant.

[0057] Fig. 1 shows an overview of an embodiment of a rotor 10 and a detailed view A of the rotor in the area of ​​the groove 4. The rotor 10 has in particular a holding part 2, which is pressed into a rotor base 1 in a bore 21. The holding part 2 has in particular a hexagon bolt 7, which is arranged in order to be able to connect the rotor 10 to a textile machine (not shown), as with respect to the Fig. 7 for the method 100 or for the use 150.

[0058] For use 150 in a rotor spinning process, the functional surfaces 6 of the groove 4 and the fiber sliding surface 9 are of particular importance. The fiber sliding surface 9 is in particular assigned to a rotor wall 3, wherein the groove 4 is assigned to a rotor base 1. The rotor base 1 forms a component that is in particular formed integrally with the groove 4. The groove 4 is in particular designed as an undercut that can form an outer edge in the axial direction, with which contact with the rotor wall 3 is possible. Here and elsewhere, an axial direction is to be understood as a direction that has at least directional components that are parallel to an axis of symmetry and / or a rotation axis of the rotor (in an assembled state).

[0059] The groove 4 serves, in particular in a rotor spinning process, to guide a fiber ring (not shown) which can be formed from the individual fibers which move axially inwards over the fiber sliding surface 9 (i.e. from an inlet opening 11 of the rotor wall 3 along a sliding direction of the fibers along the fiber sliding surface 9) and finally into the groove 4. The fiber ring is then, in particular, also guided at least partially over the base 14 of the rotor base in order to combine with a yarn (not shown) which is being drawn off and thereby formed, in particular in a (central) take-off (not shown), to form the yarn which is being lengthened and thereby formed.

[0060] The fiber sliding surface 9 is in particular inclined in such a way that the conical section (in a plane section shown here along the rotation axis 20) widens from an inlet opening 11 along the rotation axis 20 inwards to the rotor base 1, in particular in such a way that the conical section of the rotor wall 3 has the largest (inner) diameter at the transition from the fiber sliding surface 9 to the groove 4. In embodiments, as also shown by way of example in the Figs. 2 , 3 and 5are shown, a nose 8 can be formed at the transition from the fiber sliding surface 9 to the groove 4, which is designed and arranged in such a way to prevent fiber jamming (not shown) at the transition of the sliding fibers (not shown) from the fiber sliding surface 9 to the groove 4. The nose 8 has in particular a point that can be referred to as a nose tip 23. This is in particular a point or in particular an area that is arranged at a maximum axially inside the rotor, i.e. away from an inlet opening 11 of the rotor wall 3, in particular parallel along an axis of rotation and / or symmetry, when the rotor is assembled. In this case, the inner area of ​​the rotor 10 is in particular the area in which fibers can come into contact with the rotor 10 or its functional surfaces 6.Alternatively or additionally, the nose tip 23 can also be the point or region of the nose 8 at which the conic section has the maximum diameter and / or at which the fibers last make contact with the fiber sliding surface 9 during sliding. In particular, the nose tip 23 can be the point or region of the nose 8 at which the fibers lose contact with the fiber sliding surface 9 during sliding. The groove 4 has, in particular, a lowest point 15. This is, in particular, a point on a plane perpendicular to the axis of rotation 20, which is at a maximum distance from the inlet opening 11, but is nevertheless part of the groove 4. The groove 4 is thus delimited downwards, in particular by the number of points 15. The points 15 (or the region) can be points 5 that are located at most radially outwards. The two points 5 and 15 can coincide in embodiments, but can also be different points 5, 15.

[0061] In particular, as with regard to the following Figs. 2 , 3 and 5 As described below, the distance between the maximum radially outer point 5 of the groove 4 and the nose tip 23 can be varied between different rotor bases 1 in order to be able to influence the yarn, as described elsewhere. Alternatively or additionally, the distance between the maximum axially spaced point 15 from the inlet opening 11 and the nose tip 23 can vary between different rotor bases 1 in order to be able to influence the yarn, as described elsewhere.

[0062] The Fig. 4 shows an exemplary transition between fiber sliding surface 9 and groove 4 without nose 8. The above statements refer not to the nose tip 23 but to a point 29 at which the fibers leave the fiber sliding surface 9, i.e. in particular lose contact with it.

[0063] Fig. 1 shows an exemplary embodiment in which the holding part 2 is pressed into a bore 21 in the rotor base 1. It is also shown that the rotor wall 3 can be pressed into the rotor base 1. For this purpose, both the rotor base 1 and the rotor wall 3 have, in particular, corresponding contacting surfaces 25, 26. These contacting surfaces 25, 26 are, in particular, parallel to the rotation axis 20. The inlet opening 11 has, in particular, a diameter of 22.5 mm.

[0064] In the following explanations, particular attention is paid to the differences to the exemplary embodiment as described in the Fig. 1 shown and described above.

[0065] Fig. 2A shows an overview of an exemplary embodiment of a rotor 10. Fig. 2B shows a detailed view A of the embodiment of the rotor 10 from Fig. 2A . Therein, the distance between point 5 and the nose tip 23 is in particular 0.84 mm. The distance between point 15 and the nose tip 23 is in particular 0.85 mm. In other embodiments, they can in particular be largely the same size. In this case, a clearance 13 can be formed between a surface which is formed radially outward from the nose 8 and a region of the groove 4. This surface can be parallel to the axis of rotation 20. Here, it is shown how the groove 4 approaches the nose tip 23 in particular in an arcuate manner, wherein in particular the diameter of the rotor base 1 (again) decreases in a direction towards the inlet opening 11 of the rotor wall 3. As an alternative to an arcuate shape (in sectional view), a straight line (in sectional view) can also be provided.In other embodiments, it can be provided that the nose 8 projects in particular over the groove 4, wherein the groove 4 no longer tapers further in a direction towards the inlet opening 11 of the rotor wall 3 or, alternatively, only up to a certain diameter of the rotor base. A wall can also run largely parallel around the rotation axis 20, over which the nose tip 23 projects, in particular on which the nose tip 23 rests, furthermore in particular without play 13. This also applies accordingly to the other embodiments shown. Figs. 1 and 3 bis 5 .

[0066] There may be embodiments in which the distance between point 5 and the nose tip 23 is, in particular, also largely exactly 1.29 mm. This can be achieved regardless of whether a nose 8 at least partially projects over a groove 4 or whether a second groove surface (not shown) is arranged in a groove 4 which, as described elsewhere, has a smaller radius (in particular at each point) than the radius of the groove 4 at point 5. The same applies accordingly to the diameter, since in particular there is rotational symmetry about the rotation axis 20. In other words, the groove 4 can therefore not only have one, in particular arcuate, contour, but also a more complex contour, in which, for example, an arcuate contour can adjoin a surface axially closer to the inlet opening 11, which can facilitate the transfer of the fibers from the fiber sliding surface 9, in particular via a nose 8.It can be provided that there is no complete transition to a maximum radius, as at point 5, but rather a slightly increasing radius of the groove 4, axially in the direction of point 5.

[0067] In particular, in embodiments, the nose 8 can protrude between 0.01 and 0.5 mm into the groove 4. Alternatively, the nose 8 can protrude between 0.1 and 0.4 mm into the groove 4. Alternatively, the nose 8 can protrude between 0.2 and 0.3 mm into the groove 4 or protrude by 0.25 mm into the groove 4. Exemplary embodiments have a nose 8 that is 0.5 mm, in particular measured from the contact surface 27 of the rotor wall 3 and the rotor base 1 in the axial direction in the region of the groove 4. In particular, an edge arranged axially closer to the inlet opening 11 can be arranged on the rotor base 1, which edge can delimit the groove 4 on the outside in the direction of the inlet opening 11 of the rotor wall 3, wherein the edge has a height of 0.25 mm in particular. This allows the nose 8 to protrude 0.25 mm into the groove 4. In particular, the edge at least partially contacts the contact surface 27.

[0068] In embodiments, the distance in the radial direction between the transition point of the fiber sliding surface 9 as point 29 (see Fig. 4 ) or as the nose tip 23 and the radially outermost point 5 of the groove 4 can be between 0.5 and 1.5 mm. Alternatively, the distance can be between 0.6 and 1.3 mm, in particular between 0.65 and 1.27 mm, even further, in particular almost exactly 0.7 mm, or almost exactly 0.76 mm, or almost exactly 1.26 mm.

[0069] In the Fig. 2A In the exemplary embodiment of the rotor 10 shown, the rotor wall 3 projects over the rotor base 1, in particular in a flange-like manner, in a radially outwardly arranged contact region 12. In this case, the contacting surfaces 25, 26 in particular contact in order to mediate a connection between the rotor base 1 and the rotor wall 3. The rotor wall 3 projects over the rotor base 1 in the region of contact in such a way that it engages up to a nose 8 on one side of the groove 4 which is closer to the inlet opening 11 of the rotor wall 3, whereby the transition region between the fiber sliding surface 9 and the groove 4 can be formed.

[0070] Fig. 3A shows an overview of an exemplary embodiment of a rotor 10. Fig. 3B shows a detailed view A of the embodiment of the rotor 10 from Fig. 3A . The difference between the exemplary embodiment of the Figs. 3A und 3B lies in particular in the design of the contact area 16 with the contact surfaces 25, 26. Unlike the contact area 12, in the embodiment shown the rotor wall 3 does not project over the rotor base 1, but rather the rotor base 1 is designed in such a way as to project radially outwardly over the rotor wall 3 in the contact area 16 in a flange-like manner. Thus, in particular the rotor wall 3 is pressed into the rotor base 1. This nevertheless allows a corresponding design of the transition between the fiber sliding surface 9 and the groove 4, as with respect to the Fig. 2B described (apart from the projection of the rotor base 1 by the rotor wall 3 and the differences resulting therefrom). In particular, the distances between points 5 and 15 and the nose tip 23 correspond to the representation described in the Fig. 2B .

[0071] In alternative embodiments, the distances in the radial direction between the transition point of the fiber sliding surface 9 as point 29 (see Fig. 4 ) or as the nose tip 23 and the radially outermost point 5 of the groove 4, in particular independently of the contact areas 12, 16. The contact area(s) 12, 16 can therefore be designed in such a way that the desired distances described elsewhere between the points 5 or the points 15 and the nose tip 23 can be formed accordingly by a combination of a rotor wall 3 and a rotor base 1.

[0072] There may also be embodiments in which the inlet opening 11 is smaller than in relation to the Fig. 1 described. Thus, the inlet opening 11 can, in particular, have a diameter of approximately exactly 21.5 mm. This allows an inclination angle of the fiber slide surface 9 to be formed, given a correspondingly predetermined receptacle by a rotor base 1.

[0073] Fig. 4A shows an overview of an exemplary embodiment of a rotor 10. Fig. 4B shows a detailed view A of the embodiment of the rotor 10 from Fig. 4A . The rotor base 1 is made in particular from a ceramic. In this case, no nose 8 is provided. In this regard, it should be noted that a nose 8 can also be provided if the rotor base 1 is made of ceramic. Here it can be seen that the point 29 can take on the function of the nose tip 23, as described elsewhere. Here it is shown by way of example that a contact area 12 can be formed which in particular again touches a contact surface 25 of the rotor wall 3 from the radial inside. However, it is particularly provided that the rotor base 1 does not contact the contact surface 25 of the rotor wall 3 in a form-fitting manner over the entire contact area 12, but that there is partial play 24. Therefore, only a contact area 28 of the rotor base 1 made of ceramic will touch the contacting surface 25 of the rotor wall 3.This allows tensions in the rotor base 1 to be compensated and further protection of the ceramic rotor base 1 can be provided.

[0074] A further exemplary difference compared to the other embodiments, which can, however, be transferred to these, is shown in the area of ​​the holding part 2. Here, a pure bolt, i.e., not a hexagonal bolt, is used as an example to arrange the rotor 10 in a textile machine. Drill grooves 18 can also be used for locking. Furthermore, the holding part 2 is not pressed into a bore 21 here, but the rotor base 1 is connected to a receiving area 22, which can accommodate a part of the rotor base 1 in a flange-like manner and, in particular, can project over it. This difference can also be transferred to the other embodiments.

[0075] Fig. 5A shows an overview of an exemplary embodiment of a rotor 10. Fig. 5B shows a detailed view A of the embodiment of the rotor 10 from Fig. 5A In contrast to the other embodiments - which can be transferred - the holding part 2 is designed as a flange-like structure 30, such that it comes into contact with a contact surface 25 of the rotor wall 3 via a contact surface 31 of the holding part 2 in a radially outer region. As a result, the rotor wall 3, like the rotor base 1, is received in the flange-like structure 30 of the holding part 2. The rotor base 1 is contacted in particular via the surface that is arranged axially away from the inlet opening 11 relative to the rotor base 1. This can further stabilize the rotor base 1. In particular, it is provided that the rotor base 1, which here is again made of ceramic, has a clearance 24 in some places relative to the flange-like structure 30, whereby a contact region 28 can be formed that is not form-fitting, in particular in order to be able to compensate for stresses in the ceramic.

[0076] With regard to the choice of material, the rotor base 1 can comprise at least one material selected from a ceramic, a polymer, a polymer composite, a fiber-reinforced plastic, a metal, steel, aluminum, a borated metal, borated steel, borated aluminum, a diamond-coated material, a diamond-coated metal, diamond-coated steel, diamond-coated aluminum or a nickel-plated metal, a nickel-plated steel or a nickel-plated aluminum.

[0077] Alternatively or additionally, with regard to the choice of material, the fiber sliding surface 9 may comprise at least one material selected from a ceramic, a polymer, a polymer composite, a fiber-reinforced plastic, a metal, steel, aluminum, a boron-coated metal, boron-coated steel, a diamond-coated material, a diamond-coated metal, diamond-coated steel, diamond-coated aluminum or a nickel-plated metal, a nickel-plated steel or a nickel-plated aluminum.

[0078] The Figs. 1 bis 5 The exemplary embodiments shown are particularly characterized by the fact that, in addition to the great freedom of choice with regard to geometries, a great freedom of choice with regard to materials is also possible. This allows the described materials, as well as the various described geometries, to be combined with one another.

[0079] Fig. 6A shows an exemplary representation of a structuring 50 of a fiber sliding surface 9. Here, in particular, a dot structure 52 is formed, in which dots are arranged relative to one another in order to cover the fiber sliding surface 9. In particular, 576 such dots are arranged relative to one another, in particular with 48 per circular revolution, in particular in 12 rows, wherein the dot arrangement can be arranged offset from one another in an axial direction across the fiber sliding surface 9. The dots have, in particular, a diameter of almost exactly 0.62 mm and a depth of almost exactly 0.05 mm.

[0080] Fig. 6B shows an exemplary and schematic representation of a structuring 50 of a fiber sliding surface 9. In particular, a wave structure 54 is formed, which is arranged to imprint a wave contour on the fiber sliding surface 9 in an axial direction. In particular, it can be provided that the wave contour from a peak to a valley has a height of almost exactly 0.03 mm. The double wavelength is in particular almost exactly 0.49 mm.

[0081] Fig. 6C shows an exemplary and schematic representation of a structuring 50 of a fiber sliding surface 9. Partial longitudinal grooves 56 are provided as structuring 50. These have, in particular, a width in the axial direction across the fiber sliding surface 9 of largely exactly 0.4 mm. These are arranged, in particular, in the circumferential direction at an angular spacing of, in particular, 60°, in particular 6 in each circular segment. Alternatively, twice as many can be arranged and in this respect at half the angular spacing. The partial longitudinal grooves 56 are, in particular, not offset from one another in an axial direction, as can be the case, for example, with the dot structure 52.

[0082] Fig. 6D shows an exemplary and schematic representation of a structuring 50 of a fiber sliding surface 9. Here, transverse grooves 58 are shown, in particular, arranged in the axial direction along the fiber sliding surface 9. These can, in particular, have a width in the circumferential direction of 0.65 mm. In particular, 48 such transverse grooves can be arranged, i.e., in particular, at an angular spacing of 7.5°.

[0083] Regarding the Fig. 6 Perspective effects of the representation are only partially or not taken into account for reasons of simplified representation.

[0084] Fig. 8 shows further structuring of the fiber sliding surface 9. Here, transverse grooves of varying lengths are shown. The transverse grooves can extend from the rotor base to the rotor opening or can be spaced apart from the rotor base and / or the rotor opening. The length of the transverse grooves can preferably be between 2.8 and 6.8 mm.

[0085] The Fig 9 shows oblique transverse grooves arranged at an angle to the longitudinal axis of the rotor, i.e., not parallel. The angle can be, for example, 30 degrees.

[0086] According to Fig. 10 the structure can be diamond-shaped.

[0087] Fig. 7shows an illustration of an exemplary embodiment of a method 100 and an exemplary use 150. In this case, the method 100 has, in particular, the step 110 of providing a rotor wall 3. In this case, in particular, a rotor wall 3 suitable for the corresponding purpose is selected from a set of rotor walls 3 and provided in order to be able to connect it to a rotor base 1. In step 120 of providing a rotor base 1, a rotor base 1 is correspondingly selected from a set of rotor bases 1 in order to select it suitable for the purpose and to complement the selected rotor wall 3. The selection of rotor wall 3 and rotor base 1 can take place in any desired order. In a step 130 of connecting rotor wall 3 and rotor base 1, these are in particular brought into contact with one another and connected accordingly. The connection can be made by pressing, screwing, gluing, or welding.Alternatively, the rotor wall 3 and the rotor base 1 can be connected to one another via a magnetic interaction. In a step 140, the composite of the rotor wall 3 and the rotor base 1 is connected to a holding part 2 and used, in particular, in a textile machine. Corresponding connection methods can be used here, as described with regard to the connection of the rotor wall 3 and the rotor base 1.

[0088] In one embodiment, the rotor 10, which in particular consists of a rotor wall 3, a rotor base 1, in particular as described, and optionally a holding part 2, can be designed to be used in a rotor spinning process. The rotor 10, also referred to as a spinning rotor, can thus consist of at least two parts—rotor base 1 and rotor wall 3—wherein the rotor base 1 has the groove 4—also referred to as a fiber collecting groove—and the rotor wall 3 has the fiber sliding surface 9, which can in particular be arranged on a fiber sliding wall. This allows the materials and coatings, as described elsewhere, to be adapted to the respective requirements of the application 150. In addition to the materials mentioned elsewhere, materials such as steel or ceramic can be provided as the material for the rotor base 1.One use relates in particular to spinning, according to an area of ​​application of the rotor 10, cotton fibers and / or viscose fibers, which are particularly suitable for high rotor speeds, into a yarn. Especially when spinning 100% viscose, a diamond groove coating and a nickel fiber sliding surface coating result in very good yarn quality. Moving from this specific embodiment to the general point, individual fiber properties can react differently upon contact with the various functional surfaces 6, or, to put it more simply, what is good for viscose does not necessarily apply to other fiber materials. For this reason, the described rotor 10, in particular as described and in particular designed by means of a method 100, enables adaptable uses 150 that are tailored to the fibers to be spun.

[0089] "May" refers, in particular, to optional features of the invention. Accordingly, there are also further developments and / or embodiments of the invention that additionally or alternatively comprise the respective feature or features. If necessary, isolated features can also be selected from the combinations of features disclosed herein and used in combination with other features to define the subject matter of the claim, dissolving any structural and / or functional relationship that may exist between the features. List of reference symbols

[0090] 1 Rotor base 2 Holding part 3 Rotor wall 4 Groove 5 Maximum radially outer point of the groove 6 Functional surfaces 7 Hexagonal bolt 8 Nose 9 Fiber slip surface 10 Rotor 11 Inlet opening 12 Contact area 13 Clearance 14 Base of the rotor base 15 Maximum axially distant point from the rotor inlet opening 16 Contact area 18 Bore groove 20 Rotation axis 21 Bore 22 Receptacle area 23 Nose tip 24 Clearance 25 Contacting surface 26 Contacting surface 27 Contact surface of the rotor wall to the edge of the groove lying axially towards the inlet opening of the rotor wall 28 Contact area 29 Point 30 Flange-like structure 31 Contact surface 50 Structuring 52 Point structure 54 Wave structure 56 Partial longitudinal grooves 58 Transverse grooves 100 Formation process a rotor and / or a textile machine 110Preparing a rotor wall 120Preparing a rotor base 130Connecting the rotor wall and rotor base 140Connecting the composite of rotor wall and rotor base with a holding part and inserting it into a textile machine 150Usea rotor and / or a textile machine A section

Claims

1. Rotor (10) for a textile machine, in particular a rotor spinning machine, comprising: - a rotor wall (3) having a fiber sliding surface (9); characterized in that the rotor (10) has a rotor base (1) which is formed integrally with a groove (4); wherein the rotor wall (3) and the rotor base (1) are separate components and wherein the rotor wall (3) and the rotor base (1) are arranged relative to one another in such a way that the fiber sliding surface (9) opens into the groove (4).

2. Rotor (10) according to claim 1, characterized in that the rotor wall (3) is arranged inserted into the rotor base (1); or wherein the rotor base (1) is arranged inserted into the rotor wall (3).

3. Rotor (10) according to one of claims 1 or 2, characterized in that a holding part (2) is arranged in such a way as to rotatably support the rotor (10).

4. Rotor (10) according to claim 3, characterized in thatthe holding part (2) is designed to be arranged in such a way as to receive a region of the rotor base (1), in particular on a side of the rotor base (1) which is arranged facing away from the rotor wall (3); or wherein the holding part (2) is designed to be arranged in such a way as to receive a region of the rotor base (1), in particular on the side of the rotor base (1) which is arranged facing away from the rotor wall (3), and a region of the rotor wall (3), in particular a radially outer region.

5. Rotor (10) according to one of the preceding claims, characterized in thatat least one selected from the rotor base (1) or the fiber sliding surface (9), at least one material selected from a ceramic, a polymer, a polymer composite, a fiber-reinforced plastic, a metal, steel, aluminum, a borated metal, borated steel, a diamond-coated material, a diamond-coated metal, diamond-coated steel, diamond-coated aluminum or a nickel-plated metal, a nickel-plated steel or a nickel-plated aluminum.

6. Rotor (10) according to one of claims 3 to 5, characterized in that at least two of the parts, selected from the rotor wall (3), the rotor base (1), the holding part (2), are designed to be connectable to one another, wherein the connection is selected from pressing, screwing, gluing, welding, or wherein at least two of the parts are connectable to one another via a magnetic interaction.

7. Rotor (10) according to one of the preceding claims, characterized in that a nose (8) is formed in a direction directed away from an opening of the rotor wall (3), in particular in an assembled state, at the transition from the fiber sliding surface (9) to the groove (4).

8. Rotor (10) according to claim 7, characterized in that the nose (8) protrudes between 0.01 and 0.5 mm into the groove (4); or protrudes between 0.1 and 0.4 mm into the groove (4); or protrudes between 0.2 and 0.3 mm into the groove (4); or protrudes by 0.25 mm into the groove (4).

9. Rotor (10) according to one of the preceding claims, characterized in thatthe distance in the radial direction between a transition point (29) at which the fibers leave the fiber sliding surface (9) and the radially outermost point (5) of the groove (4) is between 0.5 and 1.5 mm; or between 0.6 and 1.3 mm; or between 0.65 and 1.27 mm; or 0.7 mm; or 0.76 mm; or 1.26 mm.

10. Rotor (10) according to one of the preceding claims, characterized in that the fiber sliding surface (9) has a structuring (50), in particular selected from a dot structure (52), a wave structure (54), a structure having partial longitudinal grooves (56) or a structure having transverse grooves (58).

11. Textile machine comprising a rotor (10) according to one of the preceding claims.

12. A method (100) for forming a rotor (10) according to one of claims 1 to 10, comprising the steps of: - providing (110) a rotor wall (3); - providing (120) a rotor base (1); - connecting (130) the rotor wall (3) and the rotor base (1).

13. Use (150) of a rotor (10) and / or a textile machine according to one of claims 1 to 11.

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