Device for rewinding and winding yarn

Abstract

The invention relates to a method and a device for rewinding and winding a feed thread (18) onto a bobbin (5) in order to form a bobbin (2), having a control mechanism and having a machine frame (22). A bobbin core (19), which is held in a rotationally fixed manner, has a bobbin core axis (20) and is used for receiving a feed yarn (18), a first tension adjusting arm (24), a first yarn tension sensor (25), an output device (27) and a winding device (1) are arranged in the machine frame (22), wherein the first yarn tension sensor (25) and the output device (27) are used for measuring the yarn tension. The first tension adjusting arm and the first yarn tension sensor (25) are arranged between the cylinder core (19) and the output device (27). The unwinding thread guide (28) is arranged at a radial distance (29) from the bobbin core (19), the unwinding thread guide (28) being provided with a drive device (31) for rotating the unwinding thread guide (28) about a bobbin core axis (20).

Description

[0001] The invention relates to a device for winding yarn from a feed bobbin onto a bobbin to form a bobbin, the device comprising a control mechanism and a frame, and a core held in the frame in a rotationally fixed manner and having a core axis for receiving the feed bobbin and a winding device.

[0002] Devices for rewinding yarns are used in the textile industry in different embodiments. When manufacturing yarns, rewinding of the feed yarn or yarn is often performed. Here, the yarn should be wound on the bobbin in such a way that the bobbin can be used optimally in the subsequent process. For example, a conical dyeing bobbin is manufactured from a cylindrical feed bobbin. Here, the feed yarn is rewound from the feed bobbin onto a bobbin tube. The further use of the rewinding machine brings with it the necessity of specific bobbin specifications, for example, for sewing machines, the following bobbin specifications are predefined: this bobbin specification cannot be used in the actual manufacture of the yarn due to its specific size. Specific requirements for the winding method or unusual shapes of the feed yarn may also make rewinding necessary. The device for rewinding the yarn comprises a bobbin core for accommodating the feed bobbin, a winding device and usually a yarn brake. The bobbin core is designed to be non-rotatable for the rewinding of the yarn present on the bobbin core, since the feed bobbin does not rotate while the yarn is being drawn off. The yarn unwound from the stationary feed bobbin via the tube top is guided to the winding device via a yarn brake. The yarn brake serves to induce the necessary tension in the yarn when it is wound onto the bobbin. CH 530333 discloses such a rewinding, in which the yarn is unwound in conjunction with the delivery roller by the rotational movement of the main bobbin and / or the support roller. The support roller is used to drive the main bobbin. The yarn is unwound via the tube top during rewinding, wherein the feed bobbin itself does not rotate.

[0003] Not all types of feed yarns are provided on a feed bobbin (or bobbin) with a bobbin core after the yarn is manufactured. The yarn is constructed into a feed bobbin in the form of a so-called spin cake, for example. Here, the yarn is wound onto a skeleton formed by a wire or a flat steel, whereby the feed bobbin appears as a polygon in its outer surface. This skeleton is larger in diameter at its outer bobbin end than the diameter of the wound yarn. As a result, it is impossible to unwind the yarn from the spin cake via the top. This is the case, for example, for viscose yarn. The bobbin core is therefore rotatably supported in a device that is provided for rewinding the feed bobbin in the form of a spin cake. For the spin cake, the yarn is not wound onto the bobbin core but onto the thread support. As a result, it is impossible to unwind the yarn via the top. The spin cake is therefore rotatably held on a horizontally arranged bobbin core. Depending on the design of the spinning cake or the properties of the yarn to be unwound, the spinning cake is rotated by yarn stretching or the bobbin is driven by a motor.

[0004] During the unwinding or unwinding process of the spinning cake, the feed yarn is unwound in a rotating manner, wherein the spinning cake, that is to say the actual roving bobbin, rotates. In this process, vibrations are generated due to the existing imbalance in the spinning cake, which can be transmitted to the yarn and can cause yarn tension peaks. These yarn tension peaks penetrate all the way to the bobbin, which leads to a reduction in the quality of the new bobbin. In particular, for smooth yarns, such as viscose yarns, this leads to the following situation: the layer formed on the bobbin starts to slip and the quality of the bobbin is insufficient or the bobbin cannot be used for further processing.

[0005] EP 1707523A1 shows a rewinding device for rewinding a yarn, the rewinding device having a control variable recording device, the control variable recording device being configured to determine a rewinding speed control variable of the yarn fed to the bobbin, wherein a regulating module is provided, the regulating module being configured to control a rewinding unit for regulating the rewinding speed as a function of the rewinding speed control variable. As a possible rewinding speed control variable, the unwinding yarn tension is mentioned, which should be determined by means of a yarn tension sensor directly following the feed bobbin.

[0006] GB 1 490 293 A discloses another device for adjusting the tension of the yarn when it is unwound from the package.

[0007] The object of the present invention is therefore to provide a device and a method for rewinding a feed yarn from a non-bobbin-shaped feeder onto a bobbin tube, which device allows a stable rewinding process and thus a high quality of the bobbin.

[0008] This object is achieved by a device and a method having the features of the independent claims.

[0009] A device for winding a feed yarn onto a bobbin to form a bobbin is proposed. The device has a control mechanism and a frame, wherein a core for receiving the feed yarn, a first tension adjustment arm, a first yarn tension sensor for measuring yarn tension, a dispensing device, and a winding device are arranged in the frame. The first tension adjustment arm and the first yarn tension sensor are arranged between the core and the dispensing device. In addition, a withdrawal guide is arranged at a radial spacing relative to the core axis, wherein the withdrawal guide is provided with a drive device, which is used to rotate the withdrawal guide around the core axis. The feed yarn laid on the core held in a torsionally fixed manner is not unwound via the top, that is, unwound in the direction of the core axis, by the winding device, but is radially guided out of the core relative to the core axis by the rotating withdrawal guide. The radial spacing between the withdrawal guide and the core axis depends on the laid diameter of the feed yarn. It has been shown that for most applications, a radial spacing of 0.6 to 0.8 times the diameter of the feed bobbin or the spinning cake is sufficient. The unwinding guide revolves around the bobbin core at a speed determined by the control mechanism so that the feed yarn is always guided away from the bobbin core axis in a radial direction. As a result, the feed yarn is guided away from the bobbin core in a manner and method opposite to the way the feed yarn is wound or provided during the production of the feed yarn. After the unwinding guide, the feed yarn is further guided to the first tension adjustment arm and then to the output device via the first yarn tension sensor. The unwinding guide revolving around the bobbin core axis has the advantage that the influence of the winding method of the feed yarn or the spinning cake has no effect on the properties of the yarn during unwinding. Only negligible vibrations occur because, due to the lack of movement of the roving bobbin, the existing imbalance of the roving bobbin has no effect on the movement of the unwound feed yarn. The device enables the production of high-quality bobbins, especially for smooth yarns, such as viscose yarns. In addition, energy savings are achieved compared to conventional methods, since the weight of the feed yarn has no influence on the drive of the unwinding yarn guide, compared to the known rotation of the feed bobbin. The novel device also enables a complete unwinding of the feed yarn without interference.

[0010] According to a preferred embodiment, the device has a control device which is designed to adjust the rotation speed of the withdrawal guide about the bobbin axis as a function of the yarn tension measured by the first yarn tension sensor, as will be explained in more detail below.

[0011] If the first tension adjustment arm is arranged between the core and the yarn tension sensor, a particularly reliable adjustment for the yarn tension can be achieved. Thus, only suppressed fluctuations of the yarn tension are generated in the (next) yarn tension sensor, thereby enabling reliable measurement of the yarn tension as will be explained in detail below. The tension adjustment arm is a known device for compensating for short-term fluctuations in the delivery amount of the feeding yarn. The tension adjustment arm is formed by a yarn guide, a lever and a spring. The lever is supported in a housing in a swingable manner, wherein the first lever arm is on one side of the rotation point and the second lever arm is on the other side of the rotation point. The yarn guide is held on the first lever arm, and the feeding yarn obtains a change of direction through the yarn guide. The spring is fixed in the housing with its first end and fixed on the second lever arm with its second end. By changing the direction of the feeding yarn around the yarn guide, the lever is swung around the rotation point along the pulling direction of the feeding yarn, wherein the spring hinders this swinging motion with the opposite pulling direction. If a small pulling force of the feed yarn on the yarn guide is briefly generated by a change in the yarn tension, the spring prevails and causes the lever to swing in its pulling direction, thereby increasing the travel to be traversed by the feed yarn and thus maintaining the tension in the feed yarn. By using the first dancer arm, only damped fluctuations of the yarn tension occur in the subsequent yarn tension sensor, thereby enabling a reliable measurement of the yarn tension. Yarn tension sensors are known from the prior art in various embodiments, for example bending beam sensors are suitable.

[0012] Suitable discharge devices are known from the prior art and are formed, for example, by a driven roller and a guide roller arranged overlapping relative to the driven roller. The guide roller can be supported rotatably or non-rotatably. The feed yarn is wound around the driven roller and the guide roller several times, for example seven times. The multiple windings produce a sufficiently high coefficient of friction between the roller surface and the feed yarn so that the feed yarn can be transported by the discharge device.

[0013] The winding device is made in a structural type known from the prior art. Here, the winding device has at least one bobbin bearing structure held in a swing arm for rotatably clamping the bobbin, a support roller for supporting the bobbin, and a reciprocating mechanism for moving the yarn along the bobbin axis. The drive of the winding device or the bobbin can be carried out directly through the support of the bobbin or as an alternative through the drive of the support roller. The support roller can be made as a smooth roller or as an alternative as a grooved roller. The grooved roller represents a combination of a support roller and a reciprocating mechanism. Alternative structural types of the reciprocating mechanism to the grooved roller are, for example, a wing reciprocating mechanism or a belt reciprocating mechanism.

[0014] Advantageously, the drive device of the unwinding yarn guide is connected to the unwinding yarn guide via a transmission mechanism and a flyer, wherein the transmission mechanism is supported below the core and the concentric rotation of the unwinding yarn guide around the axis of the core is provided by the flyer. The unwinding yarn guide is fixed on an arm arranged in the direction of the core axis and parallel to the core axis. The arm is held in an element, such as a lever or a disk, which is supported rotatably around the core axis in the frame below the feed yarn. The element is connected to a drive device, such as an electric motor, via a transmission mechanism, such as a belt transmission mechanism. By arranging the transmission mechanism in the frame below the core, the transmission mechanism is protected from dirt and a simple structure of the unwinding yarn guide is possible.

[0015] According to an embodiment of the invention that is advantageous for a specific application, the core is supported in a frame on a first end side, and the unwinding guide is connected to the drive of the unwinding guide via a flyer that is arranged at a distance relative to the core axis and can rotate around the core axis, wherein the flyer is connected to the frame at a location of the second end side of the core facing away from the frame. Such an embodiment allows the radial spacing between the core and the unwinding guide to be adjusted relatively easily even after the feed bobbin is placed on the core. Preferably, a guide bobbin for accommodating the feed yarn is provided on the core. The guide bobbin is used to enable the feed yarn, which is present, for example, as a ring-shaped structure without an inner core, to be arranged around the core. Such a structure of the feed yarn is known, for example, from the production of viscose yarns. When producing viscose yarns, no bobbin is formed, but the yarn is deposited on a flat substrate in a simple circular motion. This coreless bobbin configuration can then be placed around a guide bobbin and formed into a bobbin by the proposed device.

[0016] Advantageously, a first yarn guide is arranged before the first dancer arm. The rotational movement of the unwinding yarn guide generates a constantly changing direction from which the feeding yarn reaches the first dancer arm. A remedy for this situation is provided by the first yarn guide, which standardizes the yarn direction toward the first dancer arm and thus stabilizes it.

[0017] Furthermore, it is advantageous if a second tensioner arm and a second yarn tension sensor are arranged between the output device and the winding device. Due to the design of the winding device and the shape of the bobbin to be manufactured by the winding device, fluctuations can occur in the speed of the yarn wound onto the bobbin. For example, during a simple reciprocating movement of the yarn, short-term stop states of the yarn wound onto the bobbin occur at the return point at the respective end of the bobbin. These stop states become noticeable when manufacturing conical bobbins. By using the second tensioner arm, these fluctuations do not affect the yarn tension and thus the quality of the bobbin to be manufactured.

[0018] Preferably, the second yarn guide is arranged before the second dancer arm.By this arrangement of the second yarn guide, the winding degree of the yarn guide of the second dancer arm can be improved independently of the arrangement of the output device.The winding angle of the yarn guide of the second dancer arm is higher, and the short-term change in the yarn direction is more effectively compensated by the motion of the dancer arm.

[0019] The winding device advantageously has a support roller for supporting the bobbin, which has a support roller axis, wherein the support roller is arranged in two parts along the direction of the support roller axis. In particular, when manufacturing a conical precision cross-wound bobbin on a known winding device, the so-called separated yarn, that is, the yarn pressed out from the relevant bobbin edge, is always produced again and again at the bobbin end with a larger diameter. Similarly, a very poor bobbin structure is often produced, which has an uneven, ridge-shaped distributed winding pattern. The reason for this is that the support roller extending over the entire bobbin length and resting on the bobbin outer circumference follows the much smaller peripheral speed of the bobbin outer circumference part with a smaller diameter. As a result, the support roller, which runs too slowly relative to the peripheral speed of the bobbin in the area of ​​its larger diameter, inevitably rubs and drags on the bobbin surface in the area of ​​the larger bobbin diameter, which squeezes the wound yarn beyond the bobbin edge or pushes the yarns that are closer to the inside onto each other. Here, a two-piece support roller as already proposed in CH 530333 provides a remedy. Preferably, the two parts of the support roller are connected with the spring in such a way that the two parts are pressed toward each other along the direction of the support roller axis. Here, the two parts of the support roller can be easily manually pushed apart when necessary, for example for cleaning purposes.

[0020] Preferably, the guide bobbin is formed by an empty bobbin wound with fabric, on which the feed yarn is loosely laid. The fabric layer on the guide bobbin prevents the entire feed yarn structure from rotating around the core due to the tension caused by the unwinding yarn guide. A higher coefficient of friction is generated between the fabric layer and the feed yarn than between the individual yarns of the feed yarn and the feed yarn structure. By using the empty bobbin wound with fabric as the guide bobbin, an improvement in the unwinding properties is achieved, in particular for feed yarns with a smooth surface.

[0021] Preferably, an oiler is provided upstream of the discharge device. If the feed yarn is to be oiled before winding due to further processing steps of the wound yarn, the oiler is preferably arranged upstream of the discharge device, since at this point a uniform movement of the feed yarn takes place during the rewinding process. For the oiler, different types of construction from the prior art can be used, such as application of oil by means of a drum rotating in an oil bath or by means of a brush supplied with oil.

[0022] In addition, a method for winding the feed yarn onto a bobbin to form a bobbin by using the following device is proposed, wherein the device has a control mechanism and a frame, wherein a core and a first tension adjustment arm for receiving the feed yarn and having a core axis that are held in a torsionally fixed manner, as well as a first yarn tension sensor and a dispensing device and a winding device for measuring the yarn tension are arranged in the frame. The unwinding guide is arranged at a radial spacing relative to the core axis and is placed in a rotation around the core axis by a drive device. The control mechanism is used to adjust the rotation speed of the unwinding guide around the core axis according to the yarn tension measured by the first yarn tension sensor. The rotation speed of the unwinding guide around the core axis is determined by the radial spacing between the unwinding guide and the core axis, and the circumferential speed corresponds to the unwinding speed of the feed yarn. By adjusting this unwinding speed, even if there is uneven winding of the feed yarn, a constant yarn tension before the dispensing device can be maintained.

[0023] Advantageously, a second yarn tension sensor is provided between the delivery device and the winding device, and the rotation speed of the delivery device is adjusted by the control mechanism according to the yarn tension measured by the second yarn tension sensor. By means of this adjustment, fluctuations in the yarn tension before the winding device are avoided or corrected. A uniform and constant yarn tension when the yarn enters the winding device is an essential prerequisite for forming a package with uniform density and high quality.

[0024] The winding speed of the winding device is preferably kept constant by a control mechanism. The constant winding speed makes it easier to adjust the yarn tension between the delivery device and the winding device and thus also between the withdrawal guide and the delivery device. A change in the winding speed makes the adjustment of the yarn tension more difficult, since, in addition to the yarn tension itself, further adjustment variables must be introduced into the system.

[0025] As soon as the yarn tension is measured at the first yarn tension sensor, the unwinding guide is advantageously placed in rotation around the axis of the bobbin by a control mechanism in the threading mode or in the stopped state. This achieves a threading aid by which yarn breakage during threading of the yarn is avoided. It has been shown that yarn breakage during threading can be avoided to the greatest extent if the unwinding guide is rotated around the axis of the bobbin at a rotation speed of 1 to 200 revolutions per minute in the threading mode. During the threading process, the feed yarn can be manually removed from the feed bobbin and threaded into different elements without manually unwinding the necessary amount of feed yarn from the feed bobbin or manually rotating the unwinding guide around the feed bobbin.

[0026] In a development of the method, in the event of a yarn break, the winding device and the unwinding yarn guide are stopped and an alarm is output by a control mechanism, wherein the first tensioner arm is equipped with a yarn break sensor. The yarn break sensor determines the absence of the yarn, from which the yarn break can be inferred. The yarn break sensor is designed, for example, as a light barrier. As an alternative, it is also conceivable to measure the movement of the tensioner arm, since the absence of yarn tension causes the lever of the tensioner arm to be brought into an end position by a spring, which end position can be determined by an electric contact or an inductive sensor. By stopping the winding and doffing, damage to the components caused by the yarn end swinging around, damage to the yarn on the bobbin and damage to the feed yarn on the bobbin core are avoided.

[0027] The invention is not limited to devices with a core or a core axis arranged in the vertical direction, but can also be used for devices for rewinding on a core or a core axis arranged, for example, horizontally.

[0028] Furthermore, a winding machine having a device according to the above description is proposed.

[0029] Other advantages of the present invention are described in the following examples.

[0030] Figure 1 A schematic diagram of a winding machine according to the prior art is shown;

[0031] Figure 2A schematic diagram of a first embodiment of the device according to the present invention is shown;

[0032] Figure 3 A schematic diagram of a second embodiment of the device according to the invention is shown;

[0033] Figure 4 A schematic diagram of a third specific embodiment of the device according to the invention is shown.

[0034] Figure 1 A schematic diagram of a winding machine according to the prior art is shown. A winding head is shown, which serves to rewind a yarn 3 from a feed bobbin 17 onto a bobbin 2. The winding machine can include a plurality of such winding heads. A frame 22 is mounted on a base 21. A winding device 1 for winding the yarn 3 and forming a bobbin 2 is held in the frame 22. The yarn 3 is taken from the feed bobbin 17 as a feed yarn 18 and is fed to the winding device 1 along the yarn conveying direction 4. The feed bobbin 17 is formed as a spinning cake in one embodiment, wherein the feed yarn 18 is wound on a thread support arranged centrally around an axis. The thread support represents the feed bobbin 17 or, together with the feed yarn, a spinning cake held on a bobbin core 19. The winding device 1 comprises a bobbin shaft 8, in which a bobbin 5 is rotatably held. The bobbin 5 is set in rotation by a drive device (not shown) in a direction of rotation 6, whereby the yarn 3 is wound onto the bobbin 5 and forms a bobbin 2. The bobbin shaft 8 is held in a swivel arm 7. The swivel arm 7 is rotatably held in a swivel shaft 9 by a support 11 in a frame 22, so that the swivel arm 7 can perform a swivel movement 10 around the swivel shaft 9. During the winding process, the bobbin 2, or at the beginning of bobbin formation, the bobbin 5 is placed on a support roller 12. The support roller 12 is also rotatably held in a support 14 with a support roller shaft 13 in the frame 22. The support roller 12 is set in rotation in a direction of rotation (indicated by an arrow) by the bobbin 2 rotating in the direction of rotation 6 and placed on the support roller 12. During the winding process, the diameter of the bobbin 2 continuously increases, and the spacing between the bobbin shaft 8 and the support roller 12 is compensated by the swivel arm 7 by the swivel movement 10 accordingly.

[0035] The feed yarn 18 from the feed bobbin 17 or the spinning cake is guided behind the feed bobbin 17, as seen in the yarn transport direction 4, through a yarn brake 16 and then through a reciprocating mechanism 15 before it reaches the support roller 12 and is wound onto the bobbin 5. The reciprocating mechanism 15 serves to move the yarn 3 back and forth parallel to the surface of the bobbin 2 in the direction of the bobbin axis 8 in order to achieve a uniform winding or a predetermined winding characteristic. The feed bobbin 17 is held on a bobbin core 19, wherein the bobbin core 19 is fixed in a frame 26. In the illustrated form, the bobbin core 19 or the feed bobbin 17 is rotatably fixed so that a rotation around the bobbin core axis 20 (indicated by the arrow) is possible.

[0036] Figure 2 The schematic diagram of a first embodiment of the device according to the invention is shown. The diagram shows a machine frame 22 mounted on a base 21. Two winding heads are shown in the machine frame 22 by way of example. The winding heads each have a winding device 1 and the elements necessary for guiding a feed yarn 18 to the winding device 1, which are accordingly held in the machine frame 22. The yarn 3 is conveyed by the winding device in the yarn conveying direction 4. The feed yarn 18 laid out for winding is shown on a bobbin 19 held in the machine frame 22, where the feed yarn 18 is arranged in a wound form around a bobbin axis 20. The feed yarn 18 is removed from the bobbin 19 by an unwinding guide 28 and subsequently guided to a discharge device 27 via a first dancer arm 24 and subsequently a first yarn tension sensor 25. The discharge device 27 is provided with a drive (not shown) and pulls the feed yarn 18 from the bobbin 19 via the first dancer arm 24 and the first yarn tension sensor 25. The unwinding guide 28 is held on a flyer 30. The flyer 30, which is arranged at a radial distance 29 from the core axis 20, is connected to a transmission 32. The flyer 30 and thus the unwinding guide 28 are set in rotation around the core axis 20 by means of a drive 31 via the transmission 32. In order to achieve a uniform yarn tension at the delivery device, the yarn tension measured by means of a first yarn tension sensor 25 is used as a control variable 37 for adjusting the drive 31 of the unwinding guide 28 and thus its circumferential speed around the core axis 20.

[0037] Figure 3 A schematic diagram of a second embodiment of the device according to the present invention is shown. The description of the device components that are the same as those of the first embodiment is omitted below. Figure 2In addition to the first embodiment, a guide bobbin 39 is provided for the arrangement of the feed yarn 18 on the bobbin core 19, thereby producing an improvement in order to prevent the formation of loops when the feed yarn 18 is unwound. In addition, a second tension adjustment arm 34 and a second yarn tension sensor 35 are provided between the output device 27 and the winding device 1. They are used to compensate for short-term changes in the winding speed that occur at the end of the bobbin due to the reversal of the reciprocating mechanism. For this purpose, the yarn tension measured by the second yarn tension sensor is used as a control variable 38 for the drive device 36 of the output device. Likewise, unlike the first embodiment, a first yarn guide 23 is provided between the unwinding yarn guide 28 and the first tension adjustment arm 24. The first yarn guide 23 achieves an increased degree of deflection of the feed yarn around the first tension adjustment arm 24, which in turn contributes to an improvement in the compensation of fluctuations in the yarn tension.

[0038] Figure 4 A schematic diagram of a third embodiment of the device according to the invention is shown. The description of the device components that are the same as those of the first and second embodiments is omitted below. Figure 3 In addition to the second embodiment, an oiler 26 is provided between the first yarn tension sensor 25 and the discharge device 27. By means of the oiler 26, an oil film is applied to the running roving 18. In a difference to the second embodiment, a second yarn guide 33 is also provided between the discharge device 27 and the second dancer arm 34. By means of the second yarn guide 33, an increased deflection of the feed yarn around the second dancer arm 34 is achieved, which in turn contributes to an improved compensation of fluctuations in the yarn tension.

[0039] The invention is not limited to the exemplary embodiments shown and described. Variants within the scope of the claims are also possible, such as combinations of features, even if these are shown and described in different exemplary embodiments.

[0040] List of reference numerals:

[0041] 1 Winding device

[0042] 2 Bobbin

[0043] 3 Yarn

[0044] 4 Yarn transport direction

[0045] 5 Bobbin

[0046] 6. Direction of rotation of the package

[0047] 7 Swing arm

[0048] 8 Bobbin shaft

[0049] 9 Swing axis

[0050] 10 Swinging motion

[0051] 11 Pillars

[0052] 12 Support rollers

[0053] 13 Support roller

[0054] 14 Support

[0055] 15 Reciprocating mechanism

[0056] 16 Yarn brake

[0057] 17 Feed the tube

[0058] 18 Feeding the yarn

[0059] 19 Core

[0060] 20 Core axis

[0061] 21 Basics

[0062] 22 Rack

[0063] 23 First yarn guide

[0064] 24 First tensioner arm

[0065] 25 First yarn tension sensor

[0066] 26 Oiler

[0067] 27 Output Device

[0068] 28 Unwinding Yarn Guide

[0069] 29 Pitch

[0070] 30 Flyer

[0071] 31 Drive device for unwinding yarn guide

[0072] 32 Transmission mechanism

[0073] 33 Second yarn guide

[0074] 34 Second tensioner arm

[0075] 35 Second yarn tension sensor

[0076] 36 Output device drive device

[0077] 37 Adjustment parameters of the unwinding yarn guide

[0078] 38 Adjustment parameters of output devices

[0079] 39 Guide bobbin

Claims

1. A device for winding a feed yarn (18) onto a bobbin (5) to form a bobbin (2), the device having a control mechanism and a frame (22), wherein a core (19) for receiving the feed yarn (18) and a first tension adjustment arm (24) having a core axis (20) and being held in a rotationally fixed manner and for accommodating the feed yarn (18) are arranged in the frame (22), as well as a first yarn tension sensor (25) and an output device (27) for measuring the yarn tension, and a winding device (1), wherein the first tension adjustment arm (24) and the first yarn tension sensor (25) are arranged between the core (19) and the output device (27), characterized in that: The unwinding guide (28) is arranged at a radial distance (29) relative to the core (19), wherein the unwinding guide (28) is provided with a drive device (31) for rotating the unwinding guide (28) around the core axis (20).

2. The device according to claim 1, characterized in that The first tension adjustment arm (24) is arranged between the barrel core (19) and the first yarn tension sensor (25).

3. The device according to any one of claims 1 and 2, characterized in that The drive device (31) of the unwinding yarn guide (28) is connected to the unwinding yarn guide (28) through a transmission mechanism (32) and a spindle wing (30), wherein the transmission mechanism (32) is supported below the barrel core (19), and the concentric rotation of the unwinding yarn guide (28) around the barrel core axis (20) is arranged through the spindle wing (30).

4. The device according to any one of claims 1 to 3, characterized in that A guide bobbin (39) for receiving the feed yarn (18) is arranged on the bobbin core (19).

5. The device according to at least one of the preceding claims, characterized in that A first yarn guide (23) is arranged before the first tension adjustment arm (24).

6. Device according to at least one of the preceding claims, characterized in that A second tension adjustment arm (34) and a second yarn tension sensor (35) are arranged between the output device (27) and the winding device (1).

7. The device according to claim 6, characterized in that A second yarn guide (33) is arranged before the second tension adjustment arm (34).

8. The device according to at least one of the preceding claims, characterized in that The winding device (1) comprises a support roller (12) having a support roller axis (13) for supporting the bobbin (5), wherein the support roller (12) is arranged in two parts along the direction of the support roller axis (13).

9. The device according to claim 8, characterized in that The two parts of the support roller (12) are connected to a spring in such a way that they are pressed toward each other in the direction of the support roller axis (13).

10. The device according to at least one of the preceding claims, characterized in that The guide bobbin (39) is formed by an empty bobbin wound with fabric, and the feed yarn (18) is laid loosely on the empty bobbin.

11. The device according to at least one of the preceding claims, characterized in that An oiler (26) is arranged upstream of the dispensing device (27).

12. A method for rewinding a feed yarn (18) onto a bobbin (5) to form a package (2) using a device having a control mechanism and a frame (22), wherein a core (19) for receiving the feed yarn (18) and a first tension adjustment arm (24) are arranged in the frame (22), which is held in a rotationally fixed manner and has a core axis (20), as well as a first yarn tension sensor (25) and an output device (27) for measuring the yarn tension, and a winding device (1), characterized in that: The unwinding guide (28) is arranged at a radial spacing (29) relative to the core axis (20) and is set in rotation around the core axis (20) by a drive device (31), and the control mechanism adjusts the rotation speed of the unwinding guide (28) around the core axis (20) according to the yarn tension measured by the first yarn tension sensor (25).

13. The method according to claim 12, characterized in that A second yarn tension sensor (35) is arranged between the output device (27) and the winding device (1), and the control mechanism adjusts the rotation speed of the output device (27) according to the yarn tension measured by the second yarn tension sensor (35).

14. The method according to claim 12 or 13, characterized in that The control mechanism is used to keep the winding speed of the winding device (1) constant.

15. The method according to at least one of claims 12 to 14, characterized in that As soon as the yarn tension is measured at the first yarn tension sensor (25), the withdrawal yarn guide (28) is set into rotation about the bobbin axis (20) by the control mechanism in threading mode or in a stopped state.

16. The method according to at least one of claims 12 to 15, characterized in that When the yarn breaks, the winding device (1) and the unwinding yarn guide (28) are stopped and an alarm is outputted by the control mechanism, wherein the first tension adjustment arm (24) is equipped with a yarn break sensor.

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