Thread guiding system for guiding a thread

Abstract

The invention relates to a thread guiding system (1) for guiding a thread (2) for winding the thread (2) onto a spool (3a), wherein the thread guiding system (1) comprises: - at least one electric linear motor (4) with a stator (4a), wherein the stator (4a) has a longitudinal extension (4aL) and is configured to generate a traveling magnetic field along its longitudinal extension (4aL), - at least one thread guide (5), wherein the thread guide (5) is configured as a rotor of the at least one electric linear motor (4) and comprises at least one magnetically effective force coupling means (5b', 5b"), such that a force can be exerted on the force coupling means (5b', 5b") and thus on the thread guide (5) by means of the traveling magnetic field, thereby making the thread guide (5) movable along the longitudinal extension (4aL) of the stator (4a).wherein a first reversing region (4U1) and a second reversing region (4U2) opposite the first reversing region (4U1) are formed along the longitudinal extension (4aL) of the stator (4a) for reversing the direction of movement of the thread guide (5), wherein the thread guide (5) has a guiding means (5a) for guiding a thread (5).

Description

[0001] The invention relates to a thread guide system for guiding a thread for winding the thread onto a spool, wherein the thread guide system comprises the following: at least one electric linear motor with a stator, wherein the stator has a longitudinal extension and is configured to generate a magnetic traveling field along its longitudinal extension, and at least one thread guide, wherein the thread guide is designed as a rotor of the at least one electric linear motor and comprises at least one magnetically effective force coupling means, so that a force can be exerted on the force coupling means and thus on the thread guide by means of the magnetic traveling field, whereby the thread guide is movable along the longitudinal extension of the stator, wherein a first reversal region and a second reversal region opposite the first reversal region are formed along the longitudinal extension of the stator for reversing the direction of movement of the thread guide,wherein the thread guide has a guide means for guiding a thread.,

[0002] Although this document refers to a "thread" or a "thread guide," etc., the spool material can, in principle, have any shape as long as it remains wound. Thus, the spool material can be thread-like or, for example, ribbon-like. This means that the thread guide system can also be referred to as a spool material guide system.

[0003] EP 1 342 686 B1 discloses a thread guide device for receiving spun yarns onto bobbins, particularly for open-end spinning machines. The device comprises a series of thread guides that can be moved back and forth in front of the associated bobbin by means of a drive means. The drive means is designed as a rotor of an electric linear motor, wherein the rotor has a magnetic beam body and is arranged on a stator, which has a beam body with electromagnetically current-energized coils. By generating a variable magnetic field with the stator, the rotor, which is movably arranged on the stator, can be moved back and forth in front of the bobbin.

[0004] The stator has roller bodies with a horizontal axis over its entire length, on which the rotor is supported and can move back and forth in the longitudinal direction along the stator by means of rolling friction.

[0005] A thread guide for winding devices driven by a linear motor is known, for example, from EP 1 148 016 A2 or DE 196 23 771 A1. The thread guide is attached directly to the motor's rotor. Furthermore, linear motors are known from JP 1160348 and JP 2003214032 A in which the rotor is mounted on wheels, the rotor containing a magnetic return element, e.g., a soft iron element.

[0006] Further thread guides are described, for example, in documents WO 2009 / 092122 A1 and WO 2009 / 103095 A1. The latter document relates to embodiments of thread guides that are still in use today. These thread guides can also be used in conjunction with the present invention or supplemented by modifications in accordance with the present invention.

[0007] Yarn guides or yarn guide systems should generally meet several requirements at once: They should enable the rapid winding of spools onto spool material, avoiding winding errors as far as possible, and they should also be as robust and cost-effective to manufacture as possible. In practice, for example, yarn guides on wheels have been developed in accordance with WO 2009 / 103095 A1, whereby the yarn guide can be moved quickly by a linear motor. One challenge when winding a spool at high winding speeds is primarily the reversal of the yarn on the spool flanks. It is therefore advisable to adhere to a predefined reversal radius in order to ensure uniform application of the yarn to the spool body and to prevent the yarn from falling off on the flanks, forming loops, or even breaking.For this reason, in practice, attempts are made to make the thread guide as lightweight as possible and to make the drive power of the linear motor relatively generous in order to be able to specify a rapid and as precise a movement of the thread guide as possible.

[0008] An object of the invention is to create a thread guiding system that makes it possible to achieve even higher speeds and precision when guiding a thread.

[0009] This object is achieved by a thread guide system of the type mentioned at the outset, in which at least a first and a second driven collision element is provided according to the invention, wherein each collision element is provided with a means for absorbing and releasing collision energy, hereinafter referred to as collision means, wherein the first collision element is guided towards the first reversal region and at least partially along the first reversal region of the stator, wherein the second collision element is guided towards the second reversal region and at least partially along the second reversal region of the stator, at least one computing unit which is configured to calculate the position and the travel speed of the thread guide, wherein the computing unit is further connected to the drives for controlling a respective drive of the at least one first and second collision element, wherein the computing unit is configured toDepending on the position and the travel speed of the thread guide, taking into account a predeterminable flank profile of a bobbin to be wound, to determine a dynamically adjusted target reversal position and a target reversal movement for the first and second reversal areas of the thread guide, and to determine the position and speed of the respective collision element for a collision time to achieve a target collision with the thread guide in accordance with the dynamically adjusted target reversal position and the target reversal movement, and to control the respective collision elements accordingly via the respective drive in order to support a reversal movement of the thread guide in the respective reversal area by collision with the collision means of the respective collision element.

[0010] The collision means can be configured to experience a force in the magnetic field. It is intended as a means for absorbing and releasing collision energy (i.e., kinetic energy that is converted into potential energy, and vice versa). The collision element can be optimized for the respective task by its own weight and the spring properties of the collision means. The support of the reversing movement of the thread guide in the respective reversing area by collision with the respective collision element or collision means is preferably supported in such a way that the energy required by the linear motor during the reversing process is minimized while simultaneously maintaining the desired reversing movement. The collision is preferably at least partially an elastic impact. The collision can be configured so that the reversing movement corresponds exactly to the desired specifications.

[0011] The reversing movement can, for example, also vary over time, depending on the speed at which the thread is wound onto a spool, as well as, for example, depending on the increasing diameter of the spool in order to create a flank profile that tapers towards the center of the spool to avoid thread shedding, and in the best case scenario, at the same time minimizing the energy expenditure caused by the linear motor on the thread guide during the reversal. The collision can, for example, be controlled so that the reversing radius is always the same regardless of the speed of the moving parts. The reversing movement can also be determined depending on how far the spool has already been wound. As the amount of material on the spool increases, the spool diameter becomes larger and, in the case of a conical flank, the winding length shortens. The diameter of the spool orThe winding material can be measured physically, or it can be calculated by counting the strokes of the yarn guide, by calculating the rotational speed and line speed, or by directly measuring the angle of the guide unit. Optimizing the reversing movement makes it possible to achieve a desired reversing radius.

[0012] In particular, it can be provided that the collision means can be varied with regard to their impact properties depending on a control signal that can be specified by the computing unit, so that the amount of collision energy that can be absorbed and released can be specified. The collision means can be, for example, a rotatable rubber wheel with rubber elements of varying elasticity arranged on its circumference, or controllable electromagnets can be used, or an air-filled element that can be filled with variable pressure can be provided. The invention enables the optimization of the parameters speed and position of the thread guide during the reversal process, speed and position of the collision element, and elasticity of the collision means. When designing the thread guide system, the mass of the corresponding elements involved in the collision can of course also be specifically selected and optimized.

[0013] Furthermore, it can be provided that the collision means is configured for magnetic interaction with an auxiliary magnet, which auxiliary magnet is attached to the thread guide, so that the force transmission between the thread guide and the collision means is at least partially magnetic. In particular, a purely magnetic force transmission is conceivable.

[0014] In particular, it can be provided that the at least one force coupling means is designed as a permanent magnet.

[0015] Furthermore, it can be provided that the collision means is designed as an elastic element. This can in particular be a mechanical spring, wherein it is preferably provided that the collision means have a non-linear progression of their elastic properties along a spring path, namely such that the stiffness increases with deviation from a neutral position, i.e. with increasing extension or compression. This can be provided in order to optimize the reversal radius, e.g. the collision means can be in the form of a progressive spring in compression or tension or a combination of both. The following variants are mentioned as examples: A) Spring with variable stiffness: With this type of non-linear spring, the stiffness (spring constant) changes depending on the deflection.B) Hysteresis spring: This type of nonlinear spring exhibits hysteresis, meaning that the extension and compression of the spring differ under the same force. This is typical of materials that exhibit a viscoelastic response, such as rubber. C) Nonlinear coil spring: In coil springs, nonlinearity can occur when the coils of the spring are not evenly spaced or when the wire diameter varies along the spring.

[0016] In particular, it can be provided that the elastic element has a spring constant that can be changed using the control signal from the computing unit. The spring constant of the collision element or collision means can be influenced in such a way that a desired reversal radius can be specified.

[0017] Furthermore, it can be provided that a dynamically adapted target reversal position and a dynamically adapted target reversal movement means that repeated reversal processes can be set to differ from one another by appropriate control by means of the computing unit, both with regard to the position in which the reversal movement is initiated, with regard to the distance along which the reversal movement is carried out, and with regard to the speed profile that is followed along the distance of the reversal movement during the reversal process.

[0018] "Dynamic reversal position" refers to a time-varying reversal position of the yarn guide, which can be specified depending on the winding state of the bobbin to be wound. Typically, the stroke length of the yarn guide decreases with increasing winding material quantity, i.e., the flanks are tapered and slope toward the bobbin center with increasing distance from the winding axis.

[0019] Factors influencing the reversal process: Speed ​​and mass of the thread guide, collision properties of the collision device in relation to the thread guide, speed and mass of the collision element including the collision device, power transmitted by the linear motor to the thread guide during the reversal process, power transmitted by the drive to the respective collision device during the reversal process □

[0020] In particular, it can be provided that the computing unit is set up to monitor the amount of winding material wound onto a spool, in particular the spool diameter, and is set up to reduce the stroke length of the thread guide, i.e. the length covered by the thread guide between two successive reversing processes, as a function of the detected amount of winding material, in such a way that flank profiles of two opposite flanks of the spool are symmetrical to one another and each form a conical shape. In this way, the spool is wound symmetrically, i.e. both flanks are of the same design and the reversal position moves increasingly inwards. The spool diameter and the resulting reversal position can be calculated, for example, by counting the strokes or by calculating from the rotational speed and line speed or by directly measuring the angle at the tail unit or the peripheral speed.

[0021] Furthermore, it can be provided that the computing unit is set up to control the linear motor and is connected to it.

[0022] In particular, it can be provided that the calculation of the position and travel speed of the thread guide by the computing unit takes into account the control of the electric linear motor. For example, the control of the traveling field causing the movement of the thread guide can be taken into account, i.e., this allows conclusions to be drawn about the forces acting on the thread guide and thus also about its resulting speed and position.

[0023] Furthermore, it can be provided that the thread guide system has at least one physically designed detection device for detecting the position and the travel speed of the thread guide in relation to the stator, wherein the at least one computing unit is connected to the detection device for evaluating the position and the travel speed of the thread guide. For example, the position can be detected via sensors arranged along the travel path of the thread guide. These can in particular be magnetic sensors or electrical coils. The physical measurement can be carried out alternatively or in addition to indirect detection. This means that the calculation could also be carried out entirely without a detection device. Alternatively or in addition to the detection direction, it is conceivable that the position and the travel speed of the thread guide are simply calculated without direct measurement, e.g. based on previously known parameters, such asThe temporal sequence of current supply to the drive coils of a linear motor, whereby the travel speed of the thread guide can be specified, for example, by the temporal sequence of current supply and its temporal rate of change. This can be specified, for example, by the computing unit.

[0024] In particular, it can be provided that the computing unit is configured to compare the behavior of the thread guide detected by the detection device with the target reversal position and the target reversal movement specified for the respective reversal process and to dynamically adapt the control of the collision elements, in particular also of the linear motor, to minimize the deviation between the target values ​​and actual values ​​of the position and movement of the thread guide. A control loop can therefore be formed.

[0025] Furthermore, it can be provided that the thread guide system is designed to move the thread guide at a nominal speed of at least 1 m / s, preferably at least 5 m / s, particularly preferably more than 10 m / s.

[0026] In particular, it can be provided that the first and second collision elements are electrically driven.

[0027] Furthermore, it can be provided that the first and second collision elements and the thread guide are driven via the stator of the linear motor and are preferably guided along a common rail, wherein it is preferably provided that the collision elements are each connected to the thread guide via a collision means in the form of an elastic band, wherein the length of the band is selected in such a way that the band is tensioned with increasing distance from a collision element, in such a way that a reversing movement is assisted by a tensile force exerted by the band, wherein the collision elements are preferably movable against the direction of movement of the thread guide for this purpose. Furthermore, it can be provided that the thread guide is additionally assisted in its reversing movement by colliding with the other collision element towards which the thread guide is moving.

[0028] The invention is explained in more detail below with reference to an exemplary and non-limiting embodiment, which is illustrated in the figures. Fig. 1 schematically a perspective view of a winding device with a thread guide device and Fig. 2 a variant of the invention with a thread guide mounted on a rail.

[0029] In the following figures, unless otherwise stated, the same reference symbols denote the same features.

[0030] Figure 1shows a rough schematic of a thread guide system 1 for a winding unit 3 for winding a thread 2. The winding unit comprises a spool 3a, onto which the thread 2 is wound. For this purpose, the spool 3 is rotated about its axis 3c by a drive 3b, e.g., a spindle motor. Adapted to the rotational movement of the spool 3a, a thread guide feeds the thread-like thread 2 to the spool 3a in a reciprocating motion. The thread 2 is guided in a guide receptacle 5a on the thread guide 5.

[0031] Fig. 1 shows a thread guide system 1 for guiding a thread 2 for winding the thread 2 on a spool 3a. The thread guide system 1 comprises the following: At least one electric linear motor 4 with a stator 4a (see Fig. 2 ), wherein the stator 4a has a longitudinal extension 4aL and is arranged to generate a magnetic traveling field along its longitudinal extension 4aL,

[0032] With a view to Fig. 2It should now be mentioned that the system 1 also comprises at least one thread guide 5, wherein the thread guide 5 is designed as a rotor of the at least one electric linear motor 4 and at least one magnetically effective force coupling means 5b', 5b" (see Fig. 1 ), so that by means of the magnetic traveling field a force can be exerted on the force coupling means 5b', 5b" and thus on the thread guide 5. In this way, the thread guide 5 is movable along the longitudinal extent 4aL of the stator 4a, wherein along the longitudinal extent 4aL of the stator 4a a first reversal region 4U1 and a second reversal region 4U2 opposite the first reversal region 4U1 are formed for reversing the direction of movement of the thread guide 5, wherein the thread guide 5 has a guide means 5a for guiding a thread 5.

[0033] Furthermore, the system 1 comprises at least a first 6a and a second driven collision element 6b, wherein each collision element 6a, 6b is provided with a means for absorbing and releasing collision energy, hereinafter referred to as collision means 6a1, 6b1. The first collision element 6a is guided toward the first reversal region 4U1 and at least partially along the first reversal region 4U1 of the stator 4a, and the second collision element 6b is guided analogously toward the second reversal region 4U2 and at least partially along the second reversal region 4U2 of the stator 4a.

[0034] In addition, the system 1 comprises at least one computing unit 7, which is configured to calculate the position 5pos and the travel speed 5vel of the thread guide 5. The computing unit 7 is further connected to the drives 8a, 8b for controlling a respective drive 8a, 8b of the at least one first 6a and second collision element 6b. The computing unit 7 is configured to, depending on the position 5pos and the travel speed 5vel of the thread guide 5, taking into account a predeterminable flank profile 3aFP (see Fig. 1) of a bobbin 3a to be wound up, for the first and second reversal areas 4U1, 4U2 ​​of the thread guide 5, to determine a dynamically adjusted target reversal position 4U1P, 4U2P and a target reversal movement 4U1s, 4U2s, respectively, and to determine the position and speed of the respective collision element 6a, 6b for a collision time to achieve a target collision with the thread guide 5 in accordance with the dynamically adjusted target reversal position 4U1P, 4U2P and the target reversal movement 4U1s, 4U2s, and to control the respective collision elements 6a, 6b via the respective drive 8a, 8b accordingly in order to support a reversal movement of the thread guide 5 in the respective reversal area 4U1, 4U2 ​​by collision with the collision means 6a1, 6b1 of the respective collision element 6a, 6b. The flank profile 3aFP can, for example, be conical, whereby the angle of the profile can be specified by appropriate guidance of the thread 2 in the reversal area.

[0035] The collision means 6a1 and 6b1 can be varied with regard to their impact properties depending on a control signal S that can be predetermined by the computing unit 7, so that the amount of collision energy that can be absorbed and released can be predetermined.

[0036] The collision means 6a1 and 6b1 can be configured for magnetic interaction with auxiliary magnets, which auxiliary magnets can be attached to the thread guide 5, so that the force transmission between the thread guide 5 and the collision means 6a1, 6b1 is at least partially magnetic. In particular, it can be provided that the at least one force coupling means 5b', 5b' is designed as a permanent magnet. Additionally or alternatively, it can be provided that the collision means 6a1, 6b1 is designed as an elastic element. In particular, the elastic element can have a spring constant that can be changed using the control signal S of the computing unit 7.

[0037] In addition, it can be provided that a dynamically adjusted target reversal position 4U1P, 4U2P and a dynamically adjusted target reversal movement 4U1s, 4U2s means that repeated reversal processes can be set to differ from one another by appropriate control by means of the computing unit 7, both with regard to the position in which the reversal movement is initiated, with regard to the path along which the reversal movement is carried out, and with regard to the speed profile that is followed along the path of the reversal movement during the reversal process.

[0038] The computing unit 7 can be configured to monitor the amount of winding material wound onto a spool 3a, in particular the spool diameter D, and furthermore it can be configured to reduce the stroke length of the thread guide 5, i.e. the length which is covered by the thread guide 5 between two successive reversing processes, depending on the detected amount of winding material, in such a way that flank profiles 3aFP of two opposite flanks of the spool 3a are formed symmetrically to one another and each form a conical shape.

[0039] Furthermore, it can be provided that the computing unit 7 is configured to control the linear motor 4 and is connected thereto. In addition, it can be provided that the calculation of the position 5pos and the travel speed 5vel of the thread guide 5 by the computing unit 7 takes into account the control of the electric linear motor 4. Furthermore, it can be provided that the thread guide system 1 has at least one physically designed detection device 9 for detecting the position 5pos and the travel speed 5vel of the thread guide 5 with respect to the stator 4a, wherein the at least one computing unit 7 is connected to the detection device 9 for evaluating the position 5pos and the travel speed 5vel of the thread guide 5.As a further development, it can be provided in particular that the computing unit 7 is configured to compare the behavior of the thread guide 5 detected by the detection device 9 with the target reversal position 4U1P, 4U2P and the target reversal movement 4U1s, 4U2s specified for the respective reversal process and to dynamically adapt the control of the collision elements 6a, 6b, in particular also of the linear motor 4, to minimize the deviation between target values ​​and actual values ​​of the position and movement of the thread guide 5.

[0040] Furthermore, it can be provided that the thread guide system 1 is configured to move the thread guide 5 at a nominal speed of at least 1 m / s, preferably at least 5 m / s, particularly preferably more than 10 m / s. In particular, it can be provided that the first collision element 6a and the second collision element 6b are electrically driven.

[0041] Furthermore, it can be provided that a first 6a and a second collision element 6b as well as the thread guide 5 are driven via the stator 4a of the linear motor 4 and are preferably guided along a common rail 10.

[0042] How now Figures 2 As can be seen, the thread guide 5 is designed as a rotor of an electric linear motor 4, wherein the rotor is mounted opposite a stator 4a, which has windings / coils 4a' for generating a magnetic traveling field, by means of at least one wheel or, in the present case, two wheels 5c' and 5c", wherein the wheel or wheels are a component of the rotor, i.e. are mounted on the rotor. The mechanical design of the thread guide 5 can in principle be analogous to WO2009 / 103095 A1.

[0043] The thread guide may comprise permanent magnets as force coupling means, so that the thread guide moves back and forth in the traveling field along the stator 4a. As the Figures 2As can be further seen, the thread guide 5 comprises a magnetic return element 11 for forming a magnetic return path, which moves with the thread guide 5 when it moves. Such a return element consists of a soft magnetic or ferromagnetic material.

[0044] In Fig. 2 Above the stator 4a, there is precisely one rail 10, on which the thread guide 5 is mounted by means of at least one wheel. To enable particularly stable mounting of the rotor in the direction of movement of the rotor, the thread guide 5 can be mounted on one rail 10 by means of two wheels 5c' and 5c". The wheels are arranged one behind the other in the direction of movement, thereby preventing the thread guide from tipping over. The wheels can, for example, be enclosed laterally by cheeks 12.

[0045] The invention is not limited to the embodiments shown, but is defined by the entire scope of the claims. Individual aspects of the invention or the embodiments may also be taken up and combined with one another. Any reference symbols in the claims are exemplary and serve only to facilitate the readability of the claims, without limiting them.

Claims

1. A thread guide system (1) for guiding a thread (2) for winding the thread (2) onto a spool (3a), wherein the thread guide system (1) comprises: - at least one electric linear motor (4) with a stator (4a), wherein the stator (4a) has a longitudinal extension (4aL) and is configured to generate a magnetic traveling field along its longitudinal extension (4aL), - at least one thread guide (5), wherein the thread guide (5) is designed as a rotor of the at least one electric linear motor (4) and comprises at least one magnetically effective force coupling means (5b', 5b"), such that a force can be exerted on the force coupling means (5b', 5b") and thus on the thread guide (5) by means of the magnetic traveling field, whereby the thread guide (5) is movable along the longitudinal extension (4aL) of the stator (4a),wherein along the longitudinal extent (4aL) of the stator (4a) a first reversal region (4U1) and a second reversal region (4U2) opposite the first reversal region (4U1) are formed for reversing the direction of movement of the thread guide (5), wherein the thread guide (5) has a guide means (5a) for guiding a thread (5), , characterized in thatthe thread guide system (1) further comprises: - at least one first (6a) and one second driven collision element (6b), wherein each collision element (6a, 6b) is provided with a means for absorbing and releasing collision energy, hereinafter referred to as collision means (6a1, 6b1), *wherein the first collision element (6a) is guided towards the first reversal region (4U1) and at least partially along the first reversal region (4U1) of the stator (4a), *wherein the second collision element (6b) is guided towards the second reversal region (4U2) and at least partially along the second reversal region (4U2) of the stator (4a), - at least one computing unit (7) which is configured to calculate the position (5pos) and the travel speed of the thread guide (5vel), wherein the computing unit (7) is further configured to control a respective drive (8a, 8b) of the at least one first (6a) and second collision element (6b) is connected to the drives (8a, 8b),wherein the computing unit (7) is configured to determine, depending on the position (5pos) and the travel speed (5vel) of the thread guide (5), taking into account a predeterminable flank profile (3aFP) of a bobbin (3a) to be wound up, a dynamically adjusted target reversal position (4U1P, 4U2P) and a target reversal movement (4U1s, 4U2s) for the first and the second reversal region (4U1, 4U2) of the thread guide (5), and to determine, in accordance with the dynamically adjusted target reversal position (4U1P, 4U2P) and the target reversal movement (4U1s, 4U2s), the position and the speed of the respective collision element (6a, 6b) for a collision time point for achieving a target collision with the thread guide (5), and to move the respective collision elements (6a, 6b) via the respective drive (8a, 8b) accordingly to control a reversal movement of the thread guide (5) in the respective reversal area (4U1, 4U2) by collision with the collision means (6a1,6b1) of the respective collision element (6a, 6b).

2. Thread guide system (1) according to claim 1, wherein the collision means (6a1, 6b1) are variable with regard to their impact properties depending on a control signal (S) that can be predetermined by the computing unit (7), so that the amount of collision energy that can be absorbed and released can be predetermined.

3. Thread guide system (1) according to claim 1 or 2, wherein the collision means (6a1, 6b1) is arranged for magnetic interaction with auxiliary magnets, which auxiliary magnet is attached to the thread guide (5) so that the force transmission between the thread guide (5) and the collision means (6a1, 6b1) is at least partially magnetic.

4. Thread guide system (1) according to one of the preceding claims, wherein the at least one force coupling means (5b', 5b') is designed as a permanent magnet.

5. Thread guide system (1) according to one of the preceding claims, wherein the collision means (6a1, 6b1) is designed as an elastic element, wherein it is preferably provided that the collision means (6a1, 6b1) have a non-linear course of their elastic properties along a spring path, namely in such a way that the stiffness increases with deviation from a neutral position, i.e. with increasing extension or compression.

6. Thread guide system (1) according to claim 5, wherein the elastic element has a spring constant which can be changed by means of the control signal (S) of the computing unit (7).

7. Thread guide system (1) according to one of the preceding claims, wherein a dynamically adapted target reversal position (4U1P, 4U2P) and a dynamically adapted target reversal movement (4U1s, 4U2s) means that repeated reversal processes can be set to differ from one another by appropriate control by means of the computing unit (7) both with regard to the position in which the reversal movement is initiated, with regard to the path along which the reversal movement is carried out, and with regard to the speed profile that is followed along the path of the reversal movement during the reversal process.

8. Thread guide system (1) according to one of the preceding claims, wherein the computing unit (7) is designed to monitor the amount of winding material wound onto a spool (3a), in particular the spool diameter (D), and is designed to reduce the stroke length of the thread guide (5), i.e. the length which is covered by the thread guide (5) between two successive reversing processes, as a function of the detected amount of winding material, in such a way that flank profiles (3aFP) of two opposite flanks of the spool (3a) each form a conical shape and are designed in particular symmetrically to one another.

9. Thread guide system (1) according to one of the preceding claims, wherein the computing unit (7) is configured to control the linear motor (4) and is connected thereto.

10. Thread guide system (1) according to one of the preceding claims, wherein the calculation of the position (5pos) and the travel speed (5vel) of the thread guide (5) is carried out by the computing unit (7) taking into account the control of the electric linear motor (4).

11. Thread guide system (1) according to one of the preceding claims, wherein the thread guide system (1) has at least one physically designed detection device (9) for detecting the position (5pos) and the travel speed (5vel) of the thread guide (5) with respect to the stator (4a), wherein the at least one computing unit (7) is connected to the detection device (9) for evaluating the position (5pos) and the travel speed (5vel) of the thread guide (5).

12. Thread guide system (1) according to claim 11, wherein the computing unit (7) is configured to compare the behavior of the thread guide (5) detected by the detection device (9) with the target reversal position (4U1P, 4U2P) and the target reversal movement (4U1s, 4U2s) specified for the respective reversal process and to dynamically adapt the control of the collision elements (6a, 6b), in particular also of the linear motor (4), to minimize the deviation between target values ​​and actual values ​​of the position and the movement of the thread guide (5).

13. Thread guide system (1) according to one of the preceding claims, wherein the thread guide system (1) is designed to move the thread guide (5) at a nominal speed of at least 1 m / s, preferably of at least 5 m / s, particularly preferably of more than 10 m / s.

14. Thread guide system (1) according to one of the preceding claims, wherein the first (6a) and the second collision element (6b) are electrically driven.

15. Thread guide system (1) according to claim 14, wherein the first (6a) and the second collision element (6b) as well as the thread guide (5) are driven via the stator (4a) of the linear motor (4) and are preferably guided along a common rail (10), wherein it is preferably provided that the collision elements (6a, 6b) are each connected to the thread guide (5) via a collision means (6a1, 6b1) in the form of an elastic band, wherein the length of the band is selected in such a way that the band is tensioned with increasing distance from a collision element (6a, 6b), in such a way that a reversing movement is supported by a tensile force exerted by the band, wherein the collision elements are preferably movable against the direction of movement of the thread guide (5) for this purpose.

Images