Yarn laying device for a textile machine, textile machine and method for operating a textile machine

Abstract

The present invention relates to a yarn laying device (6) for a textile machine (2), in particular a spinning or rinsing machine, comprising a laying element (18) which is designed to periodically move a yarn (3) to be wound up over a spool (5), and a drive device (19) for the laying element (18).The invention also relates to a textile machine (2), in particular a spinning or dishwashing machine, having a yarn laying device (6) which comprises a laying element (18) and a drive device (19) for the laying element (18), wherein the laying element (18) is designed to periodically move a yarn (3) to be wound up over a spool (5), as well as to a method for operating a textile machine (2), in particular a spinning or dishwashing machine, wherein a yarn (3) to be wound up is periodically moved over a spool (5) by a laying element (18) of a yarn laying device (6), wherein a periodic movement of the laying element has two reversal points (24) at which the laying element (18) reverses its direction of movement. For the yarn laying device (6), it is proposed that the drive device (19) has at least one first crank drive with a first crank.

Description

[0001] The present invention relates to a yarn laying device for a textile machine, in particular a spinning or winding machine, having a laying element which is designed to periodically move a yarn to be wound up over a bobbin, and a drive device for the laying element. The invention also relates to a textile machine, in particular a spinning or winding machine, having a yarn laying device which comprises a laying element and a drive device for the laying element, wherein the laying element is designed to periodically move a yarn to be wound up over a bobbin, as well as to a method for operating a textile machine, in particular a spinning or winding machine, wherein a yarn to be wound up is periodically moved over a bobbin by a laying element of a yarn laying device, wherein a periodic movement of the laying element has two reversal points at which the laying element reverses its direction of movement.

[0002] When producing or rewinding yarn in spinning or winding machines, it is advisable for further processing to wind the yarn onto so-called cross-wound bobbins. Certain spinning machines, such as rotor spinning machines, can be designed to wind the yarn spun from fibers directly into cross-wound bobbins. In ring spinning machines, for example, the produced yarn is first wound onto smaller spinning tubes and then rewound into cross-wound bobbins in winding machines. As the name suggests, in cross-wound bobbins the yarn is crossed during winding, creating a stable yarn package that can be easily transported and further processed. To produce a cross-wound bobbin on a textile machine, especially on a spinning or winding machine, a yarn laying device is necessary which periodically moves the yarn to be wound over the bobbin.Known yarn traversing devices are designed, for example, as a grooved roller or as an oscillating yarn guide. In the latter, a yarn guide is periodically moved back and forth in front of the bobbin, whereby the yarn guide must first be decelerated at the reversal points and then accelerated again. Such yarn traversing devices are disclosed, for example, in DE 10 2013 016 644 A1 and DE 10 2004 025 519 A1. A disadvantage of these yarn traversing devices is that the deceleration and subsequent re-acceleration of the yarn guide at the reversal points is inefficient, as this consumes additional energy.

[0003] The object of the present invention is therefore to propose a yarn laying device which overcomes the disadvantages of the known yarn laying devices and in particular has an increased energy efficiency.

[0004] The object is achieved by a yarn laying device, a textile machine and a method for operating a textile machine having the features of the independent patent claims.

[0005] Proposed is a yarn traversing device for a textile machine, in particular a spinning or winding machine, comprising a traversing element configured to periodically move a yarn to be wound over a bobbin, and a drive device for the traversing element. According to the invention, the yarn traversing device is characterized in that the drive device has at least one first crank mechanism with a first crank. The first crank mechanism can convert the rotation of the first crank into a periodic movement of the traversing element. The movement of the traversing element can, for example, follow a straight or curved line.The major advantage over conventional yarn laying devices is that the reversal of the laying element at the desired reversal points is achieved by the mechanics of the crank drive, so that the laying element does not have to be decelerated by a drive at the reversal points and then accelerated again. For example, a drive of the first crank can continue to run at an essentially constant rotational speed.

[0006] The first crank can, for example, be designed essentially as a circular disk, with a force transmission element arranged away from a rotational axis of the disk. Alternatively, the crank can also have a bulge on which the force transmission element is arranged. The force transmission element can, for example, transmit at least certain portions of the rotation of the crank to the laying element via a pivot joint and a lever. The entirety of the crank and lever is referred to herein as a crank drive. In this case, parts of the laying element can also serve as a lever, for example. The force transmission element can, for example, be designed as a pin arranged perpendicularly on a plane of the crank.

[0007] In the simplest design, the power transmission element of the crank can be connected directly to the laying element via a guide rail, for example. In this design, the laying element is mounted, for example, in a pivot bearing that defines a rotation axis for a periodic movement along a circular segment. To achieve sufficient deflection between the reversal points of the movement, the laying element must be comparatively long.

[0008] Therefore, in this context, it is advantageous if the first crank drive comprises a first connecting rod which establishes a connection between the first crank and the laying element. This allows the deflection of the periodic movement of the laying element to be increased without lengthening the laying element. In this case, a connecting rod is understood to be a rod at whose respective ends pivot bearings, or at least recesses for receiving pivot bearings, are arranged. A first end of the connecting rod can be connected to the power transmission element of the first crank via a first pivot bearing. A second end of the connecting rod can be connected to the laying element via a second pivot bearing. Due to the two pivot bearings and a corresponding bearing of the laying element, only a certain portion of the rotary movement of the first crank is transmitted to the laying element. In this way, the desired periodic movement of the laying element is created.A change in the direction of movement at the reversal points occurs automatically due to the rotation of the first crank. The first crank can be positioned away from the installation element, particularly to save space.

[0009] Since in this arrangement only a portion of the crank's rotational movement is converted into the periodic movement of the laying element, the movement of the laying element is slowed down in the area of ​​the reversal points. In this area, the crank's power transmission element moves essentially perpendicular to the direction of movement of the laying element.

[0010] In this context, it is advantageous if the drive device has a second crank drive with a second crank. The second crank drive with the second crank can in particular be arranged such that the deceleration of the laying element in the region of the reversal points is reduced or compensated. The interaction of the first crank drive and the second crank drive makes it possible to achieve a high laying speed of the yarn laying device and thus a high winding speed of the yarn to be wound up. The length of the periodic movement between the reversal points can also be increased by the second crank drive. The second crank can, for example, be designed identically to the first crank. When the yarn laying devices are used as intended, the first crank and the second crank are operated offset by 180°.This means, for example, that the power transmission elements of the first crank and the second crank are always arranged exactly opposite each other with respect to their respective axes of rotation.

[0011] It is advantageous if the second crank mechanism comprises a second connecting rod that establishes a connection between the second crank and the laying element. The second connecting rod can be designed similarly or identically to the first connecting rod. For example, two pivot bearings at the respective ends of the second connecting rod can again transmit only a specific portion of the rotational movement of the second crank to the laying element. A pivot bearing of the second connecting rod can, for example, form the rotational axis for the movement along the circular segment caused by the first crank mechanism.

[0012] It is also advantageous if the laying element has a first end with a yarn guide and a second end opposite the first end, wherein the first connecting rod is connected to the second end and wherein the second connecting rod is connected to an area between the first end and the second end, in particular to a rotation axis of the laying element. This arrangement makes it possible to particularly avoid a slowing down of the movement of the laying element at the reversal points. The shape of the movement and the length of the deflection between the reversal points can also be adjusted very flexibly, especially through the shape of a guide of the laying element. By connecting the first connecting rod to one end of the laying element, the entire length of the laying element can be used as a lever for the periodic movement.For example, the width of the laying element can be larger in the area where it connects to the second connecting rod than at the second end. This increases the stability of the laying element. The distance between the second end of the laying element and the connection of the second connecting rod to the laying element depends on the length of the periodic movement between the reversal points and the desired shape of the yarn guide movement.

[0013] In an advantageous development, the yarn laying device comprises a guide for the laying element. The guide can define the movement of the laying element. In the simplest versions of the yarn laying devices, in particular with only one crank drive, the guide can be designed as a simple rotary joint. In versions of the yarn laying devices with two crank drives, the guide of the laying element must additionally allow at least one pushing movement, in particular a translational movement, of the laying element.

[0014] It is advantageous if the guide is designed as a linear guide, slotted guide, roller guide and / or pendulum support. These guides allow the movement of the laying element to be adjusted precisely and stably. A linear guide is one that limits possible movement to a movement along a straight line. The slotted guide and the roller guide can of course be linear guides if this condition is met. Alternatively, the slotted guide and the roller guide can also provide guidance along a curved line. Through various guide designs, the desired laying of the yarn when winding a cheese can be determined very precisely. A slotted guide usually comprises a recess in a guide element into which a guide pin engages, for example. The shape of any possible movement is therefore limited to the shape of the recess.Due to the friction of the guide pin against the walls of the recess, a certain amount of resistance is created by the guide. In a roller guide, at least two rollers typically engage around a guide element. The shape of the guide element, in turn, limits the possible movement. The rolling action may result in less resistance than with a slotted guide.

[0015] The guide in the form of a pendulum support, for example, is designed similarly to the connecting rods described above. A pivot bearing of the pendulum support is connected, for example, to the laying element, while another pivot bearing of the pendulum support is fixed. The guide in the form of a pendulum support can only provide radial curved guidance and thus, unlike the other guides described, cannot form a linear guide.

[0016] Alternatively, the guide can also be designed as a leaf spring, especially without bearings. In this case, the leaf spring supports the acceleration and deceleration of the installation element and increases the smoothness of the system.

[0017] It is also advantageous if the drive device comprises a first drive or the first drive and a second drive. If the yarn laying device only comprises the first crank drive with the first crank, the first drive is sufficient to drive the first crank to the desired rotary movement. If the yarn laying device comprises the first crank drive with the first crank and the second crank drive with the second crank, the first drive can, for example, drive the first crank and the second crank together. Without an additional gear, the first crank and the second crank would rotate at the same speed. Alternatively, it is also conceivable for the first crank and the second crank each to have their own drive. In this case, the first drive drives the first crank and the second drive drives the second crank.This may allow for specific movement patterns of the installation element that would not be possible with a single drive. In particular, the rotation speed of the individual cranks can be individually varied depending on the position of the installation element.

[0018] It is also conceivable to operate the first drive and / or the second drive in an idle motion, i.e., to regularly change the direction of the rotation. It is possible to rotate one of the drives continuously and operate the other in an idle motion. Likewise, the pendulum support described above can be equipped with a drive and possibly a crank, with the drive of the pendulum support preferably operating in an idle motion.

[0019] The textile machine according to the invention, which is designed in particular as a spinning or winding machine, comprises a yarn traversing device comprising a traversing element and a drive device for the traversing element. As already described above, the traversing element is designed to periodically move a yarn to be wound up over a bobbin. The textile machine is characterized in that the drive device has at least one first crank drive with a first crank. As already described above, the yarn traversing device with the first crank drive means an efficiency gain for the textile machine since, in comparison to known yarn traversing devices, the traversing element does not have to be braked and then accelerated again by the drive at the reversal points of the periodic movement.

[0020] The yarn laying device of the textile machine can in particular be designed as described above, wherein the described features can be implemented individually or in any combination.

[0021] It is particularly advantageous for the textile machine if the drive mechanism of the yarn traversing device has a second crank mechanism with a second crank. As already described, the interaction of the first crank mechanism and the second crank mechanism allows for a particularly high traversing speed of the yarn traversing device and thus a high winding speed on the textile machine. The increased efficiency of the yarn traversing devices according to the invention thus directly results in an increased efficiency of the textile machine according to the invention.

[0022] Further advantages for the textile machine are achieved if the drive device comprises a first drive or the first drive and a second drive. The first drive can drive the first crank. The first drive can also drive the first crank and the second group together. Alternatively, it is conceivable for the first drive to drive the first crank and the second drive to drive the second crank. The second drive increases the cost of manufacturing the textile machine but allows for finer adjustment of the movement patterns of the laying element of the yarn laying devices, which may have a beneficial effect on the structure of the cheeses produced. By controlling the path or regulating the paths of the drives, special laying patterns of the yarn on the bobbin are possible.

[0023] It is also advantageous if the first drive and / or the second drive are independent of a bobbin drive. In known textile machines, the bobbin and the yarn traversing devices sometimes share a common drive, which can reduce the manufacturing costs of the textile machines. In this case, however, it is advantageous if these drives are independent of each other, i.e., the bobbin and the yarn traversing devices each have their own drives. This makes it much easier to adjust the movement of the traversing element of the yarn traversing devices and adapt it to the desired properties of the package.

[0024] The method according to the invention for operating a textile machine, in particular a spinning or winding machine, wherein a yarn to be wound up is periodically moved over a bobbin by a laying element of a yarn laying device, wherein a periodic movement of the laying element has two reversal points at which the laying element reverses its direction of movement, is characterized in that the movement of the laying element, in particular the reversal of the direction of movement of the laying element at the reversal points, is brought about by an interaction of at least a first crank with the laying element. As already described in detail above, the reversal of the direction of movement of the laying element occurs purely mechanically. The laying element does not have to be braked by a drive and then accelerated again in the opposite direction.

[0025] It is advantageous if the movement of the traversing element, in particular the reversal of the direction of movement of the traversing element at the reversal points, is brought about by the interaction of the first crank and a second crank with the traversing element. The second crank can, for example, accelerate the movement of the traversing element in the region of the reversal points in such a way that high traversing speeds and thus high winding speeds of the yarn to be wound into a cross-wound bobbin are possible. In addition, the short turning points in the yarn traversing thus created reduce the yarn density at the bobbin edges, which leads to a favorable density distribution of the bobbins. The reversal speed can be increased by increasing the crank speed at the reversal points.

[0026] The offset between the first crank and the second crank influences the traversing width of the traversing element. No offset between the cranks, i.e. an offset of 0°, results in the smallest traversing width. The power transmission elements of the cranks are in the same position with reference to the respective rotational axis. An offset of 180° between the cranks results in the largest traversing width. With an offset of 180°, the power transmission elements of the cranks are in exactly opposite positions with reference to the respective rotational axis of the cranks. The traversing width is preferably varied during package build-up in order to distribute the yarn, for example, along the package edges and reduce the yarn density there. This can be achieved, for example, by changing the offset between the cranks during the winding process. The change in the traversing width over time is also referred to as stroke breathing.

[0027] It is also advantageous if a rotational speed of the first crank and / or the second crank is varied, in particular increased, when the laying element is located in the region of one of the reversal points. This makes it possible to completely compensate for a slowing down of the movement of the laying element in the region of the reversal points, which results from the mechanical interaction between the first crank and / or the second crank and the laying element. Even if the rotational speed of the first crank and / or the second crank is increased in certain positions of the laying element, the method according to the invention still results in an increase in efficiency, since the laying element does not have to be braked and the direction of movement does not have to be reversed by the drive.By varying the rotation speeds, special, particularly asymmetrical laying patterns can be created on the coil, which could not previously be easily created using known methods.

[0028] It is also advantageous to vary the laying width of the laying element when winding a bobbin. As already described, this allows the yarn density on the bobbin to be advantageously influenced.

[0029] The movement of the traversing element is referred to as periodic in the description of the present invention. However, this does not preclude the possibility of changing the frequency of the movement and / or the traversing width of the traversing element during the winding of a bobbin. This is even necessary to influence the yarn density on a bobbin, as already described. The present invention primarily serves to move a yarn to be wound over a bobbin in a variable path with a fundamentally recurring movement.

[0030] Further advantages of the invention are described in the following exemplary embodiments. It shows: Figure 1 a schematic side view of a workstation of a textile machine according to the invention designed as a winding machine, Figure 2 two embodiments of a yarn laying device according to the invention, Figure 3a third embodiment of the yarn laying device according to the invention, Figure 4 a fourth embodiment of the yarn laying device according to the invention, Figure 5 a fifth embodiment of the yarn laying device according to the invention, and Figure 6 a sixth embodiment of the yarn laying device according to the invention.

[0031] In the following description of the figures, the same reference numerals are used for identical and / or at least comparable features in the various figures. The individual features, their design, and / or mode of operation are usually only explained in detail when first mentioned. If individual features are not explained in detail again, their design and / or mode of operation correspond to the design and mode of operation of the features with the same or identical functions already described.

[0032] Figure 1shows a side view of a workstation 1 of a textile machine 2 according to the invention designed as a winding machine. In such a winding machine, a yarn 3 is rewound from a spinning tube 4, which was produced, for example, by a ring spinning machine, onto a bobbin 5, in particular a cheese. In order to produce a cheese, the yarn 3 must be periodically guided over the bobbin 5 during winding. For this purpose, a yarn laying device 6 according to the invention is used. The exact structure of the yarn laying device 6 is shown in the following figures. The structure of the yarn laying device 6 in Figure 1 For example, corresponds to one of the embodiments from the Figures 3 to 6 .

[0033] In particular, the yarn laying device 6 from the example of Figure 1a first crank mechanism 7 and a second crank mechanism 8 with a first drive 9 and a second drive 10. The first drive 9 and the second drive 10 are in particular independent of a spool drive 11, which drives a drive roller 12 of the spool 5. The example of Figure 1 also includes other conventional features of the workstation 1 of a winding machine. These include suction tubes 13 for locating yarn ends on the bobbin 5 or on the spinning tube 4, a yarn splicer 14 for joining yarn ends, a yarn tensioner 15 for regulating the yarn tension, a balloon limiter 16 for limiting balloon formation during unwinding, and guide elements 17 for guiding the yarn. This exemplary embodiment shows one possible use of the yarn laying device 6 according to the invention. The yarn laying device 6 can also be used directly, for example, on a spinning machine.

[0034] Figure 2shows two simple embodiments of the yarn laying device 6 according to the invention. The yarn laying device 6 comprises a laying element 18, which is designed to periodically move the yarn 3 to be wound over the bobbin 5. Furthermore, the yarn laying device 6 comprises a drive device 19 for the laying element 18. In the embodiments of the Figure 2the drive device 19 comprises precisely one first crank drive 7 with a first crank 20. In the left-hand embodiment, the first crank 20 is connected directly to the laying element 18. The first crank drive 7 results from the first crank 20 and the laying element 18 itself. A force transmission element 21 of the first crank 20, which in this case is designed as a pin, is connected to a link 22 of the laying element 18 and thus enables a conversion of the rotary movement of the first crank 20 into a periodic movement of the laying element 18 along a circular segment. In this example, the laying element 18 is restricted to precisely one degree of rotational freedom by a pivot bearing 23.

[0035] As already described in detail above, the first crank mechanism 7 enables a mechanical conversion of the circular movement of the first crank 20 into a periodic movement of the laying element 18. Braking and re-acceleration of the laying element 18 at the reversal points 24 (see Figure 6 ) of the periodic movement, especially by a drive, is therefore no longer necessary. This results in increased energy efficiency of the yarn laying device 6.

[0036] In the example shown on the right, the Figure 2The first crank mechanism 7 comprises a first connecting rod 25, which establishes a connection between the first crank 20 and the laying element 18. The first connecting rod 25 comprises two pivot bearings 23, one of the pivot bearings 23 being connected to the power transmission element 21 of the first crank 20 and another pivot bearing 23 being connected to the laying element 18. The first connecting rod 25 allows the structure of the yarn laying device 6 to be made more flexible. In addition, the friction of the drive device 19 can be reduced by a corresponding design of the pivot bearings 23. In the right-hand embodiment of the Figure 2 Also shown is the first drive 9 of the drive device 19, which drives the first crank 20 to a rotary movement.

[0037] In all exemplary embodiments, the traversing element 18 comprises a first end 26 with a yarn guide 27 and a second end 28 opposite the first end 26, wherein the first crank drive 7 engages the second end 28 of the traversing element 18. The yarn guide 27 of the traversing element 18 comprises, for example, an opening 29 for inserting the yarn 3. Due to the periodic movement of the yarn guide 27, which is effected at least by the first crank drive 7, the yarn 3 is periodically moved over the bobbin 5, thus producing a cross-wound bobbin during winding. When the first crank drive 7 is used to generate the periodic movement of the traversing element 18, essentially only one component of the movement of the first crank 20 is transmitted to the traversing element 18. This results in a slowing down of the movement of the traversing element 18 in the region of the reversal points 24.

[0038] In the embodiment of the yarn laying device 6 in the Figure 3the slowing down of the movement of the laying element 18 in the region of the reversal points 24 is at least partially compensated for by the use of the second crank drive 8 with a second crank 30. The second crank drive 8 comprises a second connecting rod 31, which establishes a connection between the second crank 30 and the laying element 18. The first connecting rod 25 is connected to the second end 28 of the laying element 18. The second connecting rod is connected to an area 32 of the laying element 18 between the first end 26 and the second end 28. The connection of the second connecting rod 31 to the laying element 18 simultaneously forms an axis of rotation for the periodic movement of the laying element 18. In the area 32 of the connection of the second connecting rod 31, the laying element 18 is wider in order to increase the stability of the laying element 18.

[0039] The second connecting rod 31 also comprises two pivot bearings 23, one of which is connected to a power transmission element 21 of the second crank 30, and the second pivot bearing 23 is connected to the laying element 18. The first connecting rod 25 and the second connecting rod 31 engage the laying element 18 on different sides of the image plane. This prevents one-sided loading of the laying element 18, but can potentially lead to unwanted vibrations. Of course, the first connecting rod 25 and the second connecting rod 31 can also engage the laying element 18 on the same side.

[0040] In this embodiment, the first crank 20 and the second crank 30 are jointly driven by the first drive 9. The first crank 20 and the second crank 30 are preferably operated offset by 180° from each other, whereby the maximum deflection of the laying element 18 occurs between the reversal points 24 of the periodic movement. The offset by 180° means, in particular, that the force transmission elements 21 of the first crank 20 and the second crank 30 are positioned exactly opposite the respective axes of rotation.

[0041] In the embodiment of the Figure 4 the yarn laying device 6 is designed similarly to the embodiment of the Figure 3In this exemplary embodiment, the yarn laying device 6 additionally comprises a guide 33 for the laying element 18. In this exemplary embodiment, the guide 33 is designed as a linear guide and, in particular, as a slotted guide. In this context, "linear guide" means that translation of the laying element 18 is limited to a movement along a straight line.

[0042] Also in the embodiment of the Figure 5 The guide 33 is designed as a linear guide. In this embodiment, however, the linear guide is designed as a roller guide. The roller guide comprises two rollers 34, which are indicated in the figure by dashed lines. The rollers 34 enclose a guide element 35, which is straight and thus limits the translational movement of the laying element 18 to a straight line. Both in the embodiment of the Figure 4 as well as in the embodiment of the Figure 5The guide 33 can also be curved. This allows adjustments of the yarn transfer device 6 to the desired properties of the package to be produced.

[0043] In the example of Figure 6The guide 33 of the yarn laying device 6 is designed as a pendulum support. In this example, the guide 33 comprises a third connecting rod 36, with a pivot bearing 23 of the third connecting rod 36 being arranged in a fixed position. Another pivot bearing 23 of the third connecting rod 36 engages the same point on the laying element 18 as the second connecting rod 31 of the second crank drive 8. In this example, the first crank 20 is driven by the first drive 9 and the second crank 30 by the second drive 10. This figure shows the reversal points 24 for the periodic movement of the laying element 18. In the situation shown, the laying element 18, or more precisely the first end 26 of the laying element 18 with the yarn guide 27, is located at one of the reversal points 24. List of reference symbols

[0044] 1Workstation 2Textile machine 3Yarn 4Spinning tube 5Spool 6Yarn laying device 7First crank mechanism 8Second crank mechanism 9First drive 10Second drive 11Spool drive 12Drive roller 13Suction tube 14Yarn splicer 15Yarn tensioner 16Balloon limiter 17Guide element 18Laying element 19Drive device 20First crank 21Power transmission element 22Link 23Pivot bearing 24Reversal point 25First connecting rod 26First end 27Yarn guide 28Second end 29Opening 30Second crank 31Second connecting rod 32Area 33Guide 34Roller 35Guide element 36Third connecting rod

Claims

1. Yarn laying device (6) for a textile machine (2), in particular a spinning or winding machine, with a laying element (18) which is designed to periodically move a yarn (3) to be wound up over a bobbin (5), and a drive device (19) for the laying element (18), characterized by , that the drive device (19) has at least a first crank drive (7) with a first crank (20).

2. Yarn laying device (6) according to the preceding claim, characterized by , that the first crank drive (7) comprises a first connecting rod (25) which establishes a connection between the first crank (20) and the laying element (18).

3. Yarn laying device (6) according to one of the preceding claims, characterized by , that the drive device (19) has a second crank drive (8) with a second crank (30).

4. Yarn laying device (6) according to the preceding claim, characterized by , thatthe second crank drive (8) comprises a second connecting rod (31) which establishes a connection between the second crank (30) and the laying element (18).

5. Yarn laying device (6) according to the preceding claim, characterized by , that the laying element (18) has a first end (26) with a yarn guide (27) and a second end (28) opposite the first end (26), wherein the first connecting rod (25) is connected to the second end (28) and wherein the second connecting rod (31) is connected to a region (32) between the first end (26) and the second end (28), in particular to a rotation axis of the laying element (18).

6. Yarn laying device (6) according to one of the preceding claims, characterized by a guide (33) for the laying element (18).

7. Yarn laying device (6) according to the preceding claim, characterized by , that the guide (33) is designed as a linear guide, slotted guide, roller guide and / or pendulum support.

8. Yarn laying device (6) according to one of the preceding claims, characterized by , that the drive device (19) comprises a first drive (9) or the first drive (9) and a second drive (10).

9. Textile machine (2), in particular a spinning or winding machine with a yarn laying device (6) which comprises a laying element (18) and a drive device (19) for the laying element (18), wherein the laying element (18) is designed to periodically move a yarn (3) to be wound up over a bobbin (5), characterized by , that the drive device (19) has at least a first crank drive (7) with a first crank (20).

10. Textile machine (2) according to the preceding claim, characterized by , that the drive device (19) has a second crank drive (8) with a second crank (30).

11. Textile machine (2) according to claim 9 or 10, characterized by , thatthe drive device (19) comprises a first drive (9) or the first drive (9) and a second drive (10).

12. Textile machine (2) according to the preceding claim, characterized by , that the first drive (9) and / or the second drive (10) is independent of a coil drive (11).

13. Method for operating a textile machine (2), in particular a spinning or winding machine, wherein a yarn (3) to be wound up is periodically moved over a bobbin (5) by a laying element (18) of a yarn laying device (6), wherein a periodic movement of the laying element (18) has two reversal points (24) at which the laying element (18) reverses its direction of movement, characterized by , that the movement of the laying element (18), in particular the reversal of the direction of movement of the laying element (18) at the reversal points (24), is brought about by an interaction of at least one first crank (20) with the laying element (18).

14. Method according to the preceding claim, characterized by , that the movement of the laying element (18), in particular the reversal of the direction of movement of the laying element (18) at the reversal points (24), is effected by an interaction of the first crank (20) and a second crank (30) with the laying element (18).

15. Method according to claim 13 or 14, characterized by , that a rotational speed of the first crank (20) and / or the second crank (30) is varied, in particular increased, when the laying element (18) is located in the region of one of the reversal points (24).

16. Method according to one of claims 13 to 15, characterized by , that a laying width of the laying element (18) is varied when winding a coil (5).

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