Textile machine with flow contour

Abstract

The invention relates to a textile machine, in particular a rotor spinning machine, comprising a disentangling roller housing for enclosing a disentangling roller for disentangling a fiber sliver into largely separated fibers and a fiber guide channel, wherein the fiber guide channel is arranged on the disentangling roller housing in such a way as to discharge the largely separated fibers from the disentangling roller housing and feed them to a spinning rotor. In order to improve the quality of the spun thread or yarn and the handling of the spinning machines and to reduce the resource consumption for their operation, it is provided that a flow contour is formed in the fiber guide channel, the disentangling roller housing and / or a transition area between the fiber guide channel and the disentangling roller housing, in such a way as to form an optimized airflow in the fiber guide channel, in the disentangling roller housing and / or in the transition area between the fiber guide channel and the disentangling roller housing.

Description

[0001] The invention relates to a textile machine. The invention relates to an insert. The invention relates to a method.

[0002] Textile machines, in particular spinning machines, and more specifically rotor spinning machines, are known in the prior art. A rotor spinning machine has various components that work together to separate a large number of fibers from a fiber sliver and process them into a durable yarn. The most important parts of a rotor spinning machine are, in particular, a disentangling roller, which serves to disentangle the fiber sliver and separate the fibers. The disentangling roller can rotate and is, in particular, made of a suitable material such as steel or ceramic to achieve fiber separation. Appropriate structures such as teeth, grooves, or serrations can also be arranged on a surface of the disentangling roller to enable the fiber sliver to be disentangled and the fibers within it to be separated.The disentanglement roller housing primarily holds the disentanglement roller and, in particular, establishes a connection to the fiber guide channel. It ensures that the disentangled fibers can be transported into the fiber guide channel. The fiber guide channel serves primarily to guide the disentangled, separated fibers from the disentangling roller to the spinning rotor. The fiber guide channel is designed to ensure a continuous fiber supply to the spinning rotor. A spinning rotor with a rotor cup serves primarily to combine the separated fibers into a durable, strong, and as smooth as possible fiber structure—a thread or yarn. As part of the spinning rotor, the rotor cup is responsible for guiding the fibers evenly around the rotor's central axis through rotation and bonding them together to form a dense thread.

[0003] The operation of a rotor spinning machine, or spinning process, can be divided into the following steps: The fiber web is placed on the disentangling roller, and the roller housing is closed. The disentangling roller rotates and pulls the fiber web along the direction of rotation, thereby disentangling it and separating the fibers into individual fibers. Additional fiber web can be fed in to enable a continuous process. The disentangled fibers are transported from the disentangling roller to the fiber guide channel, where they are fed into a continuous fiber feed. The separated fibers are guided from the fiber guide channel to the spinning rotor, transferred into the rotor cup, and guided around the rotor on the inclined walls of the rotor cup, where they can slide down the inclined walls, thus being further stretched.The rotor cup collects the fibers, particularly in a rotor groove, and gathers them into a dense thread, which can then be drawn from the rotor cup to be wound and wound into a spool. Once wound, the thread can be used for further processing steps, such as knitting or weaving.

[0004] The degree of stretching of the individual fibers in the rotor cup when they assemble into a thread and / or yarn in a spinning step is particularly important for the quality of the resulting thread and / or yarn. Transport efficiency is important for the process flow, handling, and the associated resource consumption.

[0005] German patent DE4227885A1 shows a dissolving roller housing and a fiber feed channel. An air duct is also provided between the fiber feed channel and the feed device. The airflow in the air duct is opposite to the direction of rotation of the dissolving roller. A section of the air duct projects into the inlet of the fiber feed channel. Turbulence is to be avoided at the point where the air duct enters the fiber feed channel.

[0006] DE102005050102A1 relates to a fiber duct comprising a duct component with the transport area and an edge component with the release edge. Constrictions or widenings may be provided at the beginning of the fiber duct. Constrictions accelerate the airflow and improve fiber stretching.

[0007] The purpose of the invention is to improve the quality of the spun thread or yarn, to improve the handling of the spinning machines, and to reduce the resource expenditure for their operation.

[0008] The problem is solved in particular by a textile machine having the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

[0009] According to one aspect, the problem is solved in particular by a textile machine with the features of claim 1.

[0010] A textile machine can have a disentangling roller housing for an enclosure housing a disentangling roller for disentangling a fiber sliver into largely separated fibers, and a fiber guide channel. The fiber guide channel is arranged on the disentangling roller housing in such a way that it carries the largely separated fibers from the housing to a spinning rotor. The textile machine can be designed as a rotor spinning machine. A flow contour can be formed in the fiber guide channel, the disentangling roller housing, and / or a transition area between the fiber guide channel and the disentangling roller housing, in order to create an optimized airflow within the fiber guide channel, the disentangling roller housing, and / or the transition area between the fiber guide channel and the disentangling roller housing.

[0011] As described in more detail below, optimizing the airflow in the fiber guide channel, in the dissolving roller housing and / or in the transition area between the fiber guide channel and the dissolving roller housing refers to avoiding turbulence and creating a flow that is as laminar as possible.

[0012] To optimize airflow, the flow contour can have a bulge shape, wherein the bulge shape can have a protrusion that is preferably arranged opposite a dissolving roller located in the dissolving roller housing and that preferably projects into the flow area and reduces the flow cross-section. Preferably, the flow contour is initially concave, then convex, and finally concave again in the fiber transport direction.

[0013] Preferably, the dissolving roller housing includes an internal concave circumferential wall to encompass the outer circumferential surface of the dissolving roller, and the fiber guide channel preferably connects tangentially to the circumferential wall.

[0014] Preferably, the concave circumferential wall of the dissolving roller housing transitions smoothly into one concave end of the flow contour, and the other concave end of the flow contour transitions smoothly into the fiber guide channel. This design further reduces turbulence.

[0015] A textile machine, in particular a rotor spinning machine, is specifically a machine that can be used for the purpose of spinning fibers into thread. Such a machine uses rotating rollers or wheels to separate the fibers in order to spin them together into thread in a device, as described elsewhere herein.

[0016] Fiber flow separation can occur in the fiber guide channel. Turbulence, in particular, reduces the effectiveness of fiber detachment and fiber transport. By employing a flow contour, such as a bulge as will be described elsewhere, the turbulence can be added to the effective volume flow. This can result in improved fiber detachment. The flow contour can be implemented in the dissolving roller housing and fiber guide channel, or only in the fiber guide channel or only in the dissolving roller housing.

[0017] Furthermore, it is possible for the flow contour to be designed as a separate component, as described in detail elsewhere herein. Elsewhere, an insert is described that can increase the effectiveness of fiber release by positioning a corresponding flow contour in a specific area of ​​a textile machine. This allows for easy geometric adjustment of the insert to respond to changes in spinning pressure and / or unwind roll speeds. Simple interchangeability of the insert is thus possible. The insert can be shaped, among other things, as a partial circular segment of the unwind roll housing and can exhibit the geometry of the housing as well as at least partially that of the fiber guide channel and / or the flow contour, particularly the bulge. The insert can be guided laterally.The alignment and positioning are achieved primarily through a positive fit between the insert and the dissolving roller housing and / or the fiber guide channel. For tolerance reasons, one of these two components serves as the base. To hold the insert in its position, a frictional connection can be achieved using an externally arranged leaf spring or an internal ball-and-spring element, as also described elsewhere herein.

[0018] The disentanglement roller housing is a component of the textile machine that serves to enclose a disentanglement roller. The disentanglement roller is used, in particular, to break down the fiber sliver into individual fibers. The fiber guide channel is a part of the system or textile machine that can transport the broken-down fibers from the disentanglement roller to the spinning rotor.

[0019] The term "largely separated fibers" refers in particular to fibers that are not present in dense clumps or tufts or in a fiber ribbon, but rather individually and independently of one another, or that can be transported separately. A fiber guide channel is, in particular, a path or tube that can serve to provide a route for the separated fibers released from the fiber ribbon so that they can be transported to the spinning rotor. The spinning rotor is preferably housed in a rotor casing. The rotor casing is preferably subjected to a vacuum for spinning in a manner known per se. The vacuum in the rotor casing also causes an airflow from the disentanglement roller casing, through the fiber guide channel, and into the rotor casing or the spinning rotor. This airflow ensures the transport of the fiber released by the disentanglement roller into the spinning rotor.

[0020] The flow contour in the fiber guide channel, the dissolving roller housing, and / or in a transition area between the fiber guide channel and the dissolving roller housing is, in particular, a specific shape or structure designed to generate optimal airflow within the fiber guide channel, the dissolving roller housing, and / or the transition area. Airflow refers specifically to the natural or artificially generated draft of air through the dissolving roller housing and / or the fiber guide channel. A flow contour can be made of various materials such as metal, plastic, or ceramic and is specifically arranged and designed to optimize airflow and transport the fibers more efficiently. Optimized airflow is characterized by a fluid flow that is as laminar as possible and / or exhibits minimal turbulence, or even the complete avoidance of turbulent flow.The flow contour can be designed in such a way that its surface forms a boundary for a flow that is (still) laminar, even if no flow contour is present. The corresponding shape and / or form of the flow contour's surface can be determined based on measurements and / or simulations of an airflow's behavior, by blocking turbulent flow regions with the flow contour's surface. The flow contour can be designed as a solid piece, i.e., it can also contain material, for example, to dampen vibrations. This material can be granular, for example, to enable damping through the internal friction of the granular material.

[0021] Alternatively or additionally, the flow contour can also be formed as a solid material, particularly as a single piece. Alternatively or additionally, the flow contour can also be hollow, for example, if material and / or weight needs to be saved.

[0022] According to one aspect, the flow contour can be designed to fill an area where turbulent flow would otherwise occur. Turbulent flow is, in particular, a chaotic movement of fluid or gas that can arise from disturbances in the behavior of the fluid or gas molecules and can lead to contamination of a section of the fiber guide channel and / or the dissolving roller housing, for example, by impairing the transportability of the individual fibers. Avoiding turbulent flow reduces the need for and effort required for cleaning and maintenance, which can reduce resource consumption. The flow contour is specifically designed to minimize these turbulent flows and enable a more efficient and lower-friction airflow in the fiber guide channel, the dissolving roller housing, and / or the transition area between the fiber guide channel and the dissolving roller housing.

[0023] The flow contour in the fiber guide channel, the dissolving roller housing, and / or a transition area between the fiber guide channel and the dissolving roller housing is specifically arranged and designed to create an optimized airflow within the fiber guide channel, the dissolving roller housing, and / or the transition area between the fiber guide channel and the dissolving roller housing. An airflow, in particular, comprises a fluid flow, such as ambient air, dry air, nitrogen gas, and / or other gases, for example, from the atmosphere. A flow contour, in particular, has a surface that is arranged and designed to confine a largely laminar fluid flow in order to direct or control the fluid flow without allowing turbulence, since the surface delineates the area in which such turbulence would occur.

[0024] A transition zone can be formed between the dissolving roller housing and the fiber guide channel. This zone can be located, in particular, between -10 mm (i.e., located or beginning within the dissolving roller housing) and up to 20 mm within the fiber guide channel. In other embodiments, it can be located between -5 mm and 18 mm, further specifically between 0 mm and 15 mm, further specifically between 2 mm and 10 mm, and further specifically between 4 mm and 6 mm. It can be provided, in particular, that the transition zone is located in an area of ​​highest wear on the fiber guide channel. Alternatively or additionally, the transition zone can be defined by the occurrence of turbulent flows (without the presence of a flow contour).

[0025] According to one aspect, the flow contour is specifically designed to have a bulge shape. A bulge shape refers in particular to a curved form or elevation on a surface or component. The flow contour, or rather the bulge shape, specifically features a protrusion that is positioned opposite a dissolving roller located in the dissolving roller housing and that projects into the flow area. This flow contour shape can help to reduce turbulence and enable a more stable airflow in the fiber guide channel, in the dissolving roller housing, and / or in the transition area between the fiber guide channel and the dissolving roller housing.In this context, the bulge can in particular confine a flow pattern, which in particular replicates a laminar flow if the flow contour is not arranged, whereby in particular an area is inaccessible to the airflow which could lead to a turbulent flow, especially without the flow contour.

[0026] According to one aspect, the flow contour can be designed as a separate component or as several separate components. A separate component refers specifically to a component (i.e., also a device) that can be installed separately from other components or housings in the textile machine. In this case, the flow contour can be a separate component specifically designed to optimize airflow in the fiber guide channel, the unwinding roller housing, and / or the transition area between the fiber guide channel and the unwinding roller housing. Separating the component from other housings or components can make it easier to adjust and maintain the flow contour to ensure optimal airflow in the textile machine. This is particularly advantageous because replacing the separate component is quicker and easier, especially as described in detail elsewhere herein.Alternatively or additionally, a modular design allows for appropriate adaptation in advance of the construction of a textile machine, without having to customize a large component, such as the fiber guide channel or the dissolving roller housing.

[0027] According to one aspect, the separate component, such as the flow contour, can have (at least one) part of a partial circular segment of the dissolving roller housing. A partial circular segment of the dissolving roller housing refers in particular to a round, circular, or semicircular recess in the round or oval housing wall of the dissolving roller housing. This recess serves, in particular, to be removed from the dissolving roller housing to allow for the replacement of the corresponding flow contour. The recess is, in particular, a one-piece component that can be removed from / inserted into the dissolving roller housing, for example, by means of a lateral guide.By integrating the separate component as a partial circle segment of the dissolving roller housing, a connection between the flow contour and the rest of the dissolving roller housing can be created that is adapted to the needs of the respective application situation, which can lead to better airflow and more efficient fiber transport.

[0028] According to one aspect, the separate component is specifically designed to incorporate a portion of the fiber guide channel, a portion of the dissolving roller housing, and at least a portion of the flow contour. This ensures an optimal connection between the fiber guide channel, the dissolving roller housing, and the flow contour, resulting in improved airflow and more efficient fiber transport. Integrating the separate component with these textile machine components enables a more stable and low-friction airflow, particularly with reduced internal friction, within the fiber guide channel, the dissolving roller housing, and / or the transition zone between the fiber guide channel and the dissolving roller housing.

[0029] According to one aspect, the separate component is specifically arranged and designed so that it can be guided laterally as an insert. This means that the separate component can be inserted laterally into the textile machine from the outside. Alternatively or additionally, the insert can be guided laterally, which may mean that the insert can be held in place by contact and guide structures. The insert can be inserted laterally. The alignment and positioning are achieved primarily through a positive fit between the insert and the disassembly roller housing and / or the fiber guide channel. For tolerance reasons, one of the two components in particular forms the basis. To hold the insert in its position, a frictional connection can be achieved, for example, using a leaf spring, especially one located externally, or an internal ball-and-spring element.The insert serves primarily to create an optimal connection between the fiber guide channel, the dissolving roller housing, and the flow contour, while simultaneously reducing turbulence. The lateral guidance and / or lateral positioning of the separate component as an insert facilitates repair and maintenance work, as the component can be accessed from the outside.

[0030] The separate component is specifically arranged and designed to serve as a flow contour in the fiber guide channel, the dissolving roller housing, and / or the transition area between the fiber guide channel and the dissolving roller housing. The separate component can define the flow contour. It is guided laterally, and can therefore be arranged with corresponding structures in the area of ​​the dissolving roller housing. Its primary purpose is to optimize the airflow in the transition area between the fiber guide channel and the dissolving roller housing. In particular, the use of a separate component as an insert, especially one guided laterally, allows the system to be adapted to changing flow conditions and / or operating states.

[0031] According to one aspect, the separate component can be arranged, in particular as an insert, via a positive fit in alignment and positioning with at least one of the dissolving roller housings and / or the fiber guide channel. A positive fit here refers specifically to a mechanical connection or connecting unit that can serve to align and position the separate component with respect to the dissolving roller housing and / or the fiber guide channel. This positive fit allows the separate component to be unambiguously connected to its correct position on the textile machine in order to establish an optimal, secure connection between the fiber guide channel, the dissolving roller housing, and the flow contour.

[0032] According to one aspect, the separate component is held in position, particularly as an insert, by a leaf spring, which is arranged externally, or by a ball-and-spring element, which is arranged internally. An externally arranged leaf spring refers to a spring that is attached to the outside of the dissolving roller housing and / or the fiber guide channel to hold the separate component in position. An internal ball-and-spring element, on the other hand, refers to a spring that is arranged inside the dissolving roller housing and / or the fiber guide channel to perform the same function. Both types of springs enable the separate component to be held in position and ensure an optimal connection between the fiber guide channel, the dissolving roller housing, and the flow contour, especially during operation and when vibrations and / or oscillations are transmitted during operation.

[0033] According to one aspect, an insert for a textile machine can be designed in such a way that the flow contour is designed and arranged so that it can be positioned in a fiber guide channel, a dissolving roller housing, and / or a transition area between the fiber guide channel and the dissolving roller housing of a textile machine as described elsewhere herein. The insert is specifically designed to accommodate (and / or have) the flow contour and position it in such a way that it can generate optimal airflow in the fiber guide channel, the dissolving roller housing, and / or the transition area between the fiber guide channel and the dissolving roller housing, as described elsewhere herein. This increases the efficiency of the textile machine and improves the quality of the yarn and / or thread produced.

[0034] The application can be described by the features, advantages, and properties of the textile machine and / or the process. Conversely, the textile machine and / or the process can also be described by the features, advantages, and properties of its application. This applies particularly across category boundaries—device, system, process, and use. For the sake of brevity and readability, a repetition of all these points is omitted.

[0035] To optimize airflow in a textile machine, a method can be developed that includes the step of measuring airflow in the absence of a flow contour. Alternatively or additionally, the method can include the step of simulating airflow in the absence of a flow contour. The method can also include the step of arranging the flow contour in a specific area of ​​the textile machine, particularly as described elsewhere herein. In particular, various parameters such as the geometry, size, and position of the flow are examined to adapt a flow contour accordingly to this flow in order to achieve optimal airflow. The method can help to increase the efficiency of the textile machine, reduce energy consumption and maintenance requirements, and extend the service life of the components.

[0036] In one step, the process can involve designing a flow contour. Specifically, a flow contour is adapted to the determined flow to block certain areas and prevent turbulent flow. A digital twin of the flow contour, particularly of the corresponding insert, can be generated and / or stored in a storage device, such as an SSD, an HDD, a processor – especially as an electronic signal – or similar structures. This allows machine-readable work instructions to be provided in a manufacturing process using a computer program, enabling the design of an insert for use in a textile machine.

[0037] The process can be described by the features, advantages, and properties of the textile machine and / or its application. Conversely, the textile machine and / or its application can also be described by the features, advantages, and properties of the process. This applies particularly across category boundaries—device, system, process, and use. For the sake of conciseness and readability, a repetition of all these points is omitted.

[0038] Exemplary embodiments of the invention are described in more detail below with reference to the figures, which show schematically and by way of example: Fig. 1 a schematic representation of an exemplary embodiment of a textile machine; Fig. 2A a sectional view of an exemplary embodiment of a dissolving roller housing with a coupled fiber guide channel and flow contour; Fig. 2B a schematic representation of a flow profile in an exemplary embodiment of a dissolving roller housing with a coupled fiber guide channel without a flow contour; Fig. 3 a view of an exemplary embodiment of a separate component; Fig. 4A a view of an exemplary embodiment of a dissolving roller housing with an insert in a top oblique view; and Fig. 4B a view of an exemplary embodiment of a dissolving roller housing with an insert in a side oblique view; Fig. 4C a view of an exemplary embodiment of a dissolving roller housing with an insert in a side view; and Fig. 5 a schematic representation of an exemplary embodiment of a method.

[0039] The same reference symbols are used for elements and structures that have the same effect and / or are of the same type.

[0040] Fig. 1 Figure 1 shows a schematic representation of an exemplary embodiment of a textile machine 100, which can be configured as a rotor spinning machine 200a. Rotor spinning machines 200 have a spinning rotor 10, which can be formed from a rotor cup 30 into which individual fibers 11 can be fed via a fiber guide channel 7. The spinning rotor 10 is driven rotaryally, for example by a separate motor (not shown) or via a drive belt (not shown), for example together with other components of the rotor spinning machine 200.

[0041] The individual fibers 11 can be introduced into the rotor cup 30, for example via a channel plate adapter 12, which can be connected to an adapter channel 8 through which the individual fibers 11 can move. As the fibers 11 move within the fiber guide channel 7 and the adapter channel 8, they can be stretched, as shown schematically and by way of example. The movement of the fibers within the fiber guide channel 7 and the adapter channel 8 can be enabled by the negative pressure in the rotor cup 30, or alternatively or additionally by the application of compressed air. The fibers 11 are stretched further, particularly along the inclined walls 32 of the rotor cup 30, until they reach a rotor groove 13, where they can aggregate into a filament (not shown). This filament can then be pulled out of the rotor cup 30 via a filament take-up mechanism, which is not shown here for clarity.

[0042] The fibers 11 are first fed to a dissolving roller (not shown) by means of a fiber belt (not shown), by which they can be separated from the fiber belt and thus singulated. These singulated fibers 11 can then be transported in a dissolving roller housing 6, as shown in Fig. 2B The fibers 11 are to be fed to a rotor cup 30, in particular via a fiber guide channel 7 (and possibly via an adapter channel 8), as described elsewhere herein. There they are spun into a thread or yarn, which can be drawn off from the rotor cup via a thread take-up, which is not shown here for the sake of clarity.

[0043] Fig. 2A shows a sectional view of an exemplary embodiment of a dissolving roller housing 6 with coupled fiber guide channel 7 as plug-in assembly 59 and flow contour 40 as a separate component 3, as detailed in the Fig. 3The flow contour 40 is specifically designed as a bulge shape 41 to create a laminar airflow 52, ​​as described in Fig. 2BIn connection with a schematic representation of a flow profile in an exemplary embodiment of a dissolving roller housing 6 with a coupled fiber guide channel 7, but without a flow contour 40, a boundary flow 51 may exist, from which a turbulent flow 50 can develop in an outward direction, particularly along a flow velocity gradient. This turbulent flow can occur in a transition region 31 if no flow contour 40 is provided. Therefore, the insertion of the flow contour 40, which is formed with a surface particularly along the shape of the laminar flow path 52, can limit, if not completely prevent, the occurrence of turbulent flows 50. The laminar flow 52 in the dissolving roller housing 6 can also encounter a counterflow 54 from the dissolving roller housing 6, which can result in flow deceleration 53.

[0044] Fig. 3Figure 1 shows an exemplary embodiment of a flow contour 40, which is designed as a bulge shape 41 in a separate component 3 that can be inserted as a single piece into an insert 55, as shown in Figure 2. Fig. 4A-4C shown, or directly into the release roller housing 6 and / or into the fiber guide channel 7, as shown in the Fig. 2A shown and described in this respect. The flow contour 40 has a length between 10 mm and 30 mm, here almost exactly 28 mm. This length can also represent the transition zone 31, which can be measured particularly from an insertion area 57, as shown in Fig. 4 The flow contour 40 is shown and described. Furthermore, the flow contour 40 can also have a width of 5 mm to 20 mm, here almost exactly 17 mm. The flow contour 40 can be inserted into an insert 55 via plug-in feet 44 (see Fig. 4) can be used. In other embodiments, the flow contour 40 can be formed integrally with the insert 55.

[0045] The flow contour 40 has a concave shape 15 in the fiber transport direction, followed by a convex shape 45 and further followed by a concave shape 16 (see Fig. 2A The fiber transport direction is known to be from the dissolving roller housing to the fiber guide channel. The concave shape 15 faces the dissolving roller housing. The concave shape 15 transitions smoothly into a concave circumferential wall 14 inside the dissolving roller housing 6. The concave shape 16 transitions correspondingly smoothly into the fiber guide channel 7. In the Fig. 3The longitudinal direction L corresponds to the fiber transport direction. Additionally, the flow contour 40 can have a concave shape 42 in a lateral direction B in a certain area. This allows wings 43 to form, which can adhere to the walls of a fiber guide channel 7, a transition area 31, and / or a dissolving roller housing 6 in order to improve the transition in the airflow between an area with the flow contour 40 and one without, i.e., in particular between an area of ​​the fiber guide channel 7 (see Fig. 1 ), the transition area 31 and / or the dissolving roller housing 6 and an area of ​​the flow contour 40.

[0046] Figures 4A to 4CFigure 1 shows an exemplary embodiment of an insert 55 from various perspectives of a housing 2 of a dissolving roller housing 6. The insert 55 is inserted via a lateral guide 56, and can form a partial circular segment 58 of the dissolving roller housing 6. It can also be provided that an insertion area 57 is formed to insert a fiber guide channel 7 (not shown) into this insertion area 57. This allows the insert 55 to be positively inserted into the housing 2 via the lateral guide 56. This allows the dissolving roller housing 6 to be completed in one direction of rotation of the dissolving roller (not shown). Subsequently, a portion of the fiber guide channel 7 can be inserted into the insertion area 57 to connect it to the dissolving roller housing 6.

[0047] Fig. 5Figure 3 shows a schematic representation of an exemplary embodiment of a method 300 for optimizing the airflow in a textile machine 100. This method includes, in particular, the step 310a of measuring an airflow in the absence of a flow contour 40. Alternatively or additionally, the method 300 may include the step 310b of simulating an airflow in the absence of a flow contour 40. The method 300 may also include the step 340 of arranging the flow contour in a specific area of ​​the textile machine 100, in particular as described in detail elsewhere herein. In this process, various parameters such as the geometry, size, and position of the flow are examined in order to adapt a flow contour 40 accordingly to this flow 320, in order to achieve optimal airflow through the use of the flow contour 40.In this regard, the simulation step 310b can also involve simulating a flow with a digital insert 55 in a flow contour 40 as a digital twin. The method 300 can help to increase the efficiency of the textile machine 100, reduce energy consumption and maintenance, and extend the service life of the components.

[0048] In one step, the method can involve the design 330 of a flow contour 40. A flow contour 40 is adapted accordingly to the determined flow 320 in order to block certain areas and prevent turbulent flow 50. A digital twin of a flow contour 40, in particular of the corresponding insert 55, can be provided and / or stored in a storage device (not shown), such as on an SSD, an HDD, in a processor – especially as an electronic signal – or in similar structures, in order to provide machine-readable work instructions in a manufacturing process using a computer program product (not shown), in order to design an insert 55 accordingly for use in a textile machine 100, as described elsewhere herein.

[0049] The term "may" is used to denote, in particular, optional features of the invention. Accordingly, there are also further developments and / or embodiments of the invention that additionally or alternatively include the respective feature(s).

[0050] From the combinations of features disclosed herein, isolated features can also be selected as needed and, by dissolving any structural and / or functional relationship that may exist between the features, used in combination with other features to define the subject matter of the claim. Reference symbol list

[0051] 2 Housing 50 turbulent flow 3 component 51 boundary current 6 Dissolving roller housing 52 laminar flow 7 Fiber optic channel 53 Flow slowdown 8 Adapter channel 54 counter-current 9 Main airflow direction 55 Mission 10 Spin rotor 56 lateral guidance 11 isolated fibers 57 Insertion area for part of the fiber optic cable duct 12 Channel plate adapter 13 Rotor groove 58 Partial circle segment 14 concave circumferential wall of the dissolving roller housing 59 plug-in set 100 textile machine 15 Concave shape in the longitudinal direction 200 Rotor spinning machine 16 Concave shape in the longitudinal direction 300 Proceedings 30 Rotor cup 310a Measuring airflow in the absence of a flow contour 31 Transition area 32 sloping walls of the spinneret 310b Simulating an airflow in the absence of a flow contour 40 Flow contour 41 Bulge shape 320 Adjusting a flow contour 42 Concave shape in the lateral direction 330 Designing a flow contour 43 wing 340 Arranging a flow contour 44 Plug-in feet B Latitude 45 Convex shape in the longitudinal direction L Longitude

Claims

1. Textile machine (100), in particular rotor spinning machine (200), comprising a disentangling roller housing (6) for enclosing a disentangling roller for disentangling a fiber sliver into largely separated fibers (11) and a fiber guide channel (7), wherein the fiber guide channel (7) is arranged on the disentangling roller housing (6) in such a way as to discharge the largely separated fibers (11) from the disentangling roller housing (6) and to supply a spinning rotor (10), wherein a flow contour (40) is formed in the fiber guide channel (7), the disentangling roller housing (7) and / or a transition area (31) between the fiber guide channel (6) and the disentangling roller housing (7), wherein the flow contour (40) has a bulge shape (41), wherein the bulge shape (41) has a protrusion opposite a disentangling roller arranged in the disentangling roller housing (6). is arranged and protrudes into the flow area, reducing the flow cross-section, characterized by the fact thatthe flow contour in the fiber transport direction is initially concave (15), then convex (45) and finally concave again (16).

2. Textile machine (100) according to claim 1, characterized by the fact that the dissolving roller housing (6) includes inside a concave circumferential wall (14) to encompass the outer circumferential surface of the dissolving roller and the fiber guide channel connects tangentially to the circumferential wall.

3. Textile machine (100) according to claim 2, characterized by the fact that the concave circumferential wall (14) of the dissolving roller housing (6) transitions smoothly into a concave end of the flow contour and the other concave end of the flow contour (40) transitions smoothly into the fiber guide channel.

4. Textile machine (100) according to one of the preceding claims, characterized by the fact that the flow contour (40) is designed as at least one separate component (3).

5. Textile machine (100) according to one of the preceding claims, in particular according to claim 4, characterized by the fact thatthe separate component (3) has a partial circle segment (58) of the dissolving roller housing (6).

6. Textile machine (100) according to one of the preceding claims, characterized by the fact that the separate component (3) comprises a part of the fiber guide channel (7), a part of the dissolving roller housing (6) and at least a part of the flow contour (40).

7. Textile machine (100) according to one of the preceding claims, characterized by the fact that the separate component (3) is arranged and designed in such a way as to be guided laterally (56) as an insert (55).

8. Textile machine (100) according to one of the preceding claims, characterized by the fact that the separate component (3) can be arranged as an insert (55) via a positive locking in alignment and positioning with at least one of the dissolving roller housing (6) and / or the fiber guide channel (7).

9. Textile machine (100) according to one of the preceding claims, characterized by the fact thatthe separate component (3) is held in its position as an insert (55) by means of a leaf spring, in particular arranged externally, or a ball-spring element, in particular located internally.

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