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 guiding system for guiding a thread for winding the thread onto a spool, wherein the thread guiding system comprises: at least one electric linear motor with a stator, the stator having a longitudinal extension and being configured to generate a traveling magnetic field along its longitudinal extension, and at least one thread guide, the thread guide being configured as a rotor of the at least one electric linear motor and comprising at least one magnetically effective force coupling means, such that a force can be exerted on the force coupling means and thus on the thread guide by means of the traveling magnetic field, thereby making the thread guide movable along the longitudinal extension of the stator, wherein a first reversing region and a second reversing region opposite the first reversing region for reversing the direction of movement of the thread guide are formed along the longitudinal extension of the stator.wherein the thread guide has a guiding means for guiding a thread.

[0002] Even though this document refers to a "thread" or a "thread guide," etc., the material being wound can, in principle, have any shape as long as it remains windable; it can be thread-like or, for example, ribbon-like. This means that the thread guiding system can also be called a material guiding system. EP 1 342 686 B1 discloses a thread guiding device for receiving spun yarns on bobbins, particularly for open-end spinning machines. The device has a series of thread guides which can be moved back and forth in front of the associated bobbin by means of a drive mechanism. The drive mechanism is designed as the 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 coil.

[0003] The stator has roller bodies with a horizontal axis along its entire length, on which the rotor rests and can move back and forth along the stator in the longitudinal direction by means of rolling friction.

[0004] 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 and contains a magnetic return element, for example, a soft iron element. Other thread guides are known, for example, from 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 modification according to the present invention.

[0005] Thread guides or thread guiding systems are generally expected to meet several requirements simultaneously: They should enable the rapid winding of spools onto the material, minimize winding defects, and be as robust and cost-effective to manufacture as possible. In practice, for example, thread guides on wheels have been developed according to WO 2009 / 103095 A1, where the thread guide can be moved quickly by a linear motor. One challenge when winding a spool at high speeds lies primarily in reversing the thread at the spool flanks. Maintaining a predefined reversal radius is therefore advisable to ensure uniform thread application to the spool body and to prevent the thread from slipping off 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.

[0006] DE 39 07 125 A1 discloses a thread guiding system according to the preamble of claim 1.

[0007] Other thread guidance systems are known from CH 536 782 A and US 4 881 694 A.

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

[0009] This problem is solved by a thread guiding system of the type mentioned above, in which, according to the invention, at least one first and one second driven collision element are provided, each collision element being provided with a means for receiving and releasing collision energy, hereinafter referred to as collision means, wherein the first collision element is guided towards the first reversing region and at least partially along the first reversing region of the stator, wherein the second collision element is guided towards the second reversing region and at least partially along the second reversing region of the stator, at least one computing unit being 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 travel speed of the thread guide, and taking into account a predefinable flank profile of a spool to be wound, a dynamically adapted target reversal position and a target reversal movement are to be determined for the first and second reversal areas of the thread guide, and, corresponding to the dynamically adapted target reversal position and the target reversal movement, the position and speed of the respective collision element are to be determined for a collision time to achieve a target collision with the thread guide, and the respective collision elements are to be controlled accordingly via the respective drive. to 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 element can be configured to exert a force in the magnetic field. It serves as a means for absorbing and releasing collision energy (i.e., kinetic energy converted into potential energy, and vice versa). The collision element can be optimized for the specific task by its own weight and by its spring-like properties. The support of the thread guide's reversal movement in the respective reversal area by collision with the respective collision element or collision means is preferably achieved in such a way that the energy required by the linear motor during the reversal process is minimized while simultaneously maintaining the desired reversal movement. The collision preferably involves at least partial to an elastic collision. The collision can be set up so that the reversal motion exactly matches the desired specifications.

[0011] The reversal movement can also vary over time, depending on the speed at which the thread is wound onto a spool, as well as depending on the increasing diameter of the spool. This allows, for example, the creation of a tapered flank profile to prevent thread derailment, while ideally minimizing the energy expenditure of the linear motor on the thread guide during reversal. The collision can be controlled so that the reversal radius remains constant regardless of the speed of the moving parts. Furthermore, the reversal movement can be determined based on how much thread is already wound onto the spool. As the amount of material on the spool increases, the spool diameter grows, and the winding length decreases in the case of a tapered flank. The diameter of the spool, or...The reversing radius of the spooled material can be determined physically, or alternatively, by counting the strokes of the thread guide, by calculating it from the rotational speed and line speed, or by directly measuring the angle at the guide. Optimizing the reversing motion allows for achieving a desired reversing radius.

[0012] In particular, it can be provided that the collision means are variable with respect to their impact characteristics depending on a control signal specified by the processing unit, so that the amount of absorbable and dissipable collision energy can be specified. For example, a rotatable rubber wheel with rubber elements of varying elasticity arranged around its circumference can be provided as a collision means, or electromagnets that can be controlled 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 of speed and position of the thread guide during the reversal process, speed and position of the collision element, and elasticity of the collision means. In the design of 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 device is equipped with auxiliary magnets for magnetic interaction, which auxiliary magnet is attached to the thread guide, so that the force transmission between the thread guide and the collision device is at least partially magnetic. In particular, a purely magnetic force transmission is conceivable.

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

[0015] Furthermore, the collision device may be designed as an elastic element. In particular, it may be... toa mechanical spring, wherein it is preferably provided that the collision means have a non-linear distribution of their elastic properties along a spring section, namely such that the stiffness increases with deviation from a neutral position, i.e. with increasing extension or compression. This can be provided, toTo optimize the reversal radius, the collision means can be a progressive spring, either in compression or tension, or a combination of both. Examples include: A) Variable stiffness spring: In this type of nonlinear 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 for materials that exhibit a viscoelastic response, such as rubber. C) Nonlinear helical spring: Nonlinearity can occur in helical springs if the coils are not uniformly arranged or if the wire diameter varies along the spring.

[0016] In particular, the elastic element can be provided with a spring constant that can be changed using the control signal from the processing 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 adjusted target reversal position as well as a dynamically adjusted target reversal movement means that repeated reversal processes can be adjusted differently from one another by means of appropriate control via 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] Under"Dynamic reversal position" refers to a time-varying reversal position of the thread guide, which can be predetermined depending on the winding state of the spool being wound. Typically, the stroke length of the thread guide decreases with increasing amount of material being wound, meaning the flanks are conical and slope towards the center of the spool with increasing distance from the spool axis.

[0019] Factors influencing the reversal process: speed and mass of the thread guide, collision characteristics of the collision element in relation to the thread guide, speed and mass of the collision element including the collision element, power transferred to the thread guide by the linear motor during the reversal process, power transferred to the collision element by the drive during the reversal process □

[0020] In particular, the processing unit can be configured to monitor the amount of material wound onto a spool, especially the spool diameter, and to reduce the stroke length of the thread guide—that is, the length swept by the thread guide between two successive reversal cycles—depending on the detected amount of material. This reduction is achieved such that the flank profiles of two opposing sides of the spool are symmetrical to each other and each has a conical profile. In this way, the spool is wound symmetrically, meaning both sides are identical, and the reversal position moves progressively inwards. The spool diameter and the resulting reversal position can be calculated, for example, by counting the strokes, by calculating from the rotational speed and line speed, or by directly measuring the angle at the guide or the circumferential speed.

[0021] Furthermore, it may 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 is performed by the processing unit, taking into account the control of the electric linear motor. For example, the control of the traveling field that causes the movement of the thread guide can be considered, meaning that the forces acting on the thread guide, and thus its resulting speed and position, can be deduced.

[0023] Furthermore, the thread guidance system may include at least one physically designed detection device for recording the position and travel speed of the thread guide relative to the stator, wherein at least one computing unit is connected to the detection device for evaluating the position and travel speed of the thread guide. For example, position detection can be carried out via sensors arranged along the travel path of the thread guide. In particular, this could be... toMagnetic sensors or electrical coils are involved. Physical measurement can be performed as an alternative or supplement to indirect detection. This means the calculation could also be performed entirely without a detection device. Alternatively or additionally to the detection direction, it is conceivable that the position and travel speed of the thread guide are calculated without direct measurement, for example, based on known parameters such as the temporal sequence of the current flow to the drive coils of a linear motor. The travel speed of the thread guide can be determined, for example, by the temporal sequence of the current flow and its rate of change. This can be specified, for example, by the processing unit.

[0024] In particular, the computing unit can be configured to compare the behavior of the thread guide, as detected by the sensing device, with the target reversal position and movement specified for the respective reversal process, and to dynamically adjust the control of the collision elements, especially the linear motor, to minimize the deviation between the target and actual values ​​of the thread guide's position and movement. A control loop can therefore be formed.

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

[0026] In particular, it may 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, as well as the thread guide, are driven by the stator of the linear motor and are preferably guided along a common rail. 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, the length of which is selected such that the band is tensioned with increasing distance from a collision element, in such a way that a reversal movement is supported by a tensile force exerted by the band. For this purpose, the collision elements are preferably movable against the direction of movement of the thread guide. In addition, it can be provided that the thread guide is further supported in its reversal 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. These show 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 1The diagram shows a rough schematic of a thread guide system 1 for a bobbin unit 3 for winding a thread 2. The bobbin unit comprises a bobbin 3a onto which the thread 2 is wound. For this purpose, the bobbin 3 is rotated around its axis 3c by a drive 3b, e.g., a spindle motor. Adapted to the rotational movement of the bobbin 3a, a thread guide feeds the thread-like thread 2 to the bobbin 3a in a back-and-forth motion. The thread 2 is guided in a guide receptacle 5a on the thread guide 5.

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

[0032] With regard 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 the runner of the at least one electric linear motor 4 and at least one magnetically effective force coupling means 5b', 5b" (see Fig. 1 ) 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. In this way, the thread guide 5 is movable along the longitudinal extent 4aL of the stator 4a, wherein a first reversing region 4U1 and a second reversing region 4U2 opposite the first reversing region 4U1 for reversing the direction of movement of the thread guide 5 are formed along the longitudinal extent 4aL of the stator 4a, wherein the thread guide 5 has a guiding 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, each collision element 6a, 6b being 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 towards the first reversing region 4U1 and at least partially along the first reversing region 4U1 of the stator 4a, and the second collision element 6b is guided analogously towards the second reversing region 4U2 and at least partially along the second reversing region 4U2 of the stator 4a.

[0034] Furthermore, system 1 includes at least one computing unit 7, which is configured to calculate the position 5pos and the travel speed of the thread guide 5vel. The computing unit 7 is also connected to the drives 8a and 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 predefinable flank profile 3aFP (see Fig. 1) of a spool 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, and, corresponding to the dynamically adjusted target reversal position 4U1P, 4U2P and the target reversal movement 4U1s, 4U2s, 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, and to control the respective collision elements 6a, 6b accordingly via the respective drive 8a, 8b, to 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 predetermined by appropriate guidance of the thread 2 in the reversal area.

[0035] The collision means 6a1 and 6b1 can be modified with regard to their collision properties depending on a control signal S that can be specified by the computing unit 7, so that the amount of absorbable and dissipable collision energy can be specified.

[0036] The collision means 6a1 and 6b1 can be equipped with auxiliary magnets for magnetic interaction, 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 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 by means of the control signal S of the processing unit 7.

[0037] Furthermore, it can be provided that a dynamically adjusted target reversal position 4U1P, 4U2P as well as a dynamically adjusted target reversal movement 4U1s, 4U2s means that repeated reversal operations can be adjusted differently from one another by means of appropriate control using the computing unit 7, 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 which is followed along the distance of the reversal movement during the reversal operation.

[0038] The computing unit 7 can be configured to monitor the amount of 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 swept by the thread guide 5 between two successive reversal operations, depending on the detected amount of material, in such a way that flank profiles 3aFP of two opposite flanks of the spool 3a are symmetrical to each other and each form a conical profile.

[0039] Furthermore, it may be provided that the computing unit 7 is configured to control the linear motor 4 and is connected to it. It may also be provided that the computing unit 7 calculates the position 5pos and the travel speed 5vel of the thread guide 5, taking into account the control of the electric linear motor 4. Furthermore, it may be provided that the thread guiding system 1 has at least one physically formed 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.Further development may include, in particular, the provision that the computing unit 7 is set up 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 adjust 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, the thread guidance system 1 may be configured to move the thread guide 5 at a nominal speed of at least 1 m / s, preferably at least 5 m / s, and particularly preferably at over 10 m / s. In particular, the first collision element 6a and the second collision element 6b may be 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] What now? Figures 2 As can be seen, the thread guide 5 is designed as the rotor of an electric linear motor 4, wherein the rotor is mounted opposite a stator 4a, which has windings / coils 4a' for generating a traveling magnetic field, by means of at least one wheel, or in this case two wheels 5c' and 5c", the wheel(s) being an integral part of the rotor, i.e., 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 can include 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, for the formation of a magnetic return path, includes a return path element 11, which moves along with the thread guide 5 when it is moved. Such a return path element consists of a soft magnetic or ferromagnetic material.

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

[0045] The invention is not limited to the embodiments shown, but is defined by the entire scope of protection of the claims.

Claims

1. 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 designed 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 runner of the at least one electric linear motor (4) and comprises at least one magnetically effective force coupling means (5b', 5b") so that a force can be exerted on the force coupling means (5b', 5b") and thus on the thread guide (5) can be exerted by means of the magnetic traveling field, whereby the thread guide (5) is movable along the longitudinal extension (4aL) of the stator (4a), wherein a first reversal region (4U1) and a second reversal region (4U2) opposite the first reversal region (4U1) for reversing the direction of movement of the thread guide (5) are formed along the longitudinal extension (4aL) of the stator (4a), wherein the thread guide (5) has a guide means (5a) for guiding a thread (2), characterized in that the thread guide system (1) further comprises: - at least a first (6a) and a second driven collision element (6b), each collision element (6a, 6b) being 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 toward 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 toward 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 set up to calculate the position (5pos) and the travel speed of the thread guide (5vel), wherein the computing unit (7) is further connected to the respective drives (8a, 8b) of the at least one first (6a) and second collision element (6b) with the drives (8a, 8b), wherein the computing unit (7) is designed to *the position (5pos) and the travel speed (5vel) of the thread guide (5), taking into account a predeterminable flank profile (3aFP) of a spool (3a) to be wound, to determine a dynamically adapted target reversal position (4U1P, 4U2P) and a target reversal movement (4U1P, 4U2P) for the first and second reversal regions (4U1, 4U2) of the thread guide (5), taking into account a preselectable flank profile (3aFP) of a bobbin (3a) to be wound, and to determine a dynamically adjusted target reversal position (4U1P, 4U2P) and a target reversal movement (4U1s, 4U2s) for each of the first and second reversal regions (4U1, 4U2) of the thread guide (5), and *in accordance with the dynamically adjusted target reversal position (4U1P, 4U2P) and the target reversal movement (4U1s, 4U2s), to determine the position and speed of the respective collision element (6a, 6b) for a collision time point in order to achieve a target collision with the thread guide (5) and to control the respective collision elements (6a, 6b) via the respective drive (8a, 8b) in order to support a reversal movement of the thread guide (5) in the respective reversal range (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 in terms of their impact properties depending on a control signal (S) that can be specified by the computing unit (7), so that the amount of collision energy that can be absorbed and released can be specified.

3. Thread guide system (1) according to claim 1 or 2, wherein the collision means (6a1, 6b1) for magnetic interaction is designed as an auxiliary magnet, 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 nonlinear progression of their elasticity properties along a spring travel, 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 that can be varied by means of the control signal (S) from the computing unit (7).

7. Thread guide system (1) according to one of the preceding claims, wherein a dynamically adjusted target reversal position (4U1P, 4U2P) and a dynamically adjusted target reversal movement (4U1s, 4U2s) mean that repeated reversal operations are adapted both with regard to the position at which the reversal movement is initiated, with regard to the distance along which the reversal movement is performed, and with regard to the speed profile that is followed along the distance of the reversal movement during the reversal process, can be set to differ from one another by means of corresponding control by the computing unit (7).

8. Thread guide system (1) according to one of the preceding claims, wherein the computing unit (7) is designed to monitor the amount of thread 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 covered by the thread guide (5) between two successive reversal operations, in such a way that the flank profiles (3aFP) of two opposite flanks of the spool (3a) each form a conical curve and, in particular, are symmetrical to each other.

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

10. Thread guide system (1) according to one of the preceding claims, wherein the position (5pos) and the travel speed (5vel) of the thread guide (5) are calculated 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 formed detection device (9) for detecting the position (5pos) and the travel speed (5vel) of the thread guide (5) in relation 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 designed to compare the behavior of the thread guide (5) detected by the detection device (9) with the target reversal position (4U1P, 4U2P) specified for the respective reversal process and the target reversal movement (4U1s, 4U2s), and to dynamically adjust the control of the collision elements (6a, 6b), in particular also of the linear motor (4), in order to minimize the deviation between the target values and the actual values of the position and 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 at least 5 m / s, and particularly preferably at over 10 m / s.

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

15. Thread guide system (1) according to claim 14, wherein the first (6a) and second collision elements (6b) and 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 each case such that the band is tensioned with increasing distance from a collision element (6a, 6b) in such a way that a reverse movement is supported by a tensile force exerted by the band, whereby the collision elements are preferably movable for this purpose in the opposite direction to the direction of movement of the thread guide (5).

Images