Traverse device

Abstract

To provide a traverse device capable of carrying out accurate traverse control and preventing interference between rotary vanes adjacent in a direction in which a plurality of traverse units are arrayed and damages to the device.SOLUTION: A traverse device 1 comprises a drive motor 11, a toothed transmission belt 12 and a plurality of traverse units 13. Each traverse unit 13 has a traverse guide 17, rotary vanes (18, 19) for traversing a yarn 101 by rotating reverse to each other, a drive-force transmission shaft 22 for transmitting a drive force to the rotary vanes (18, 19) and an interference-avoidance cam 21. The interference-avoidance cams 21 adjacent in an arraying direction Y of the traverse units 13 rotate without abutment in a state the drive-force transmission shafts 22 adjacent in the arraying direction Y are at the same rotational speed. If rotational speed deviates between the drive-force transmission shafts 22, the interference-avoidance cams 21 abut against each other to regulate the deviation in rotational speed between the drive-force transmission shafts 22 and avoid the interference between the rotary vanes (18, 19) adjacent in the arraying direction Y.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a traverse device including a plurality of traverse units that traverse a yarn to be wound into a package, the plurality of traverse units being arranged side by side. [Background technology]

[0002] A traverse device including a plurality of traverse units that traverse a yarn to be wound into a package, the traverse device being disclosed in Patent Document 1, is known. The traverse device disclosed in Patent Document 1 includes a plurality of traverse units (traverse device 2) arranged side by side. Each of the plurality of traverse units has a traverse guide (guide plate 9) and a pair of rotary blades (blades 7, 8). The traverse locus, which is the locus along which the yarn is traversed, is guided by the traverse guide. The pair of rotary blades are configured to rotate in opposite directions to each other to traverse the yarn along the traverse guide and to transfer the yarn at both ends of the traverse locus.

[0003] In the traverse device of Patent Document 1, a driving force is transmitted to each of the multiple traverse units using a worm gear or a toothed transmission belt. Specifically, as a configuration using a worm gear, a worm gear consisting of worms 18, 20 and worm wheels 17, 19 is used to synchronously rotate the rotors 12, 13 of each traverse unit, and the rotors 12, 13 rotate the blades 7, 8. Since the rotors 12, 13 of each traverse unit are synchronously rotated by the worm gear, the blades 7, 8 of each traverse unit driven by the rotors 12, 13 also rotate synchronously. Patent Document 1 also discloses a configuration using a toothed transmission belt, specifically, a configuration in which a driving force is transmitted from tangential belts 45, 46 configured as toothed transmission belts to rotors 12, 13 of each traverse unit via belt pulleys 43, 44 configured as toothed pulleys, and the rotors 12, 13 of each traverse unit are rotated synchronously. Since the rotors 12, 13 of each traverse unit are rotated synchronously by the driving force from the toothed transmission belt, the blades 7, 8 of each traverse unit driven by the rotors 12, 13 also rotate synchronously.

[0004] In the traverse device of Patent Document 1, in both the configuration using a worm gear and the configuration using a toothed transmission belt, the rotating blades (blades 7, 8) of the multiple traverse units rotate synchronously. Therefore, in the traverse device of Patent Document 1, even if the rotating blades arranged adjacent to each other in the arrangement direction in which the multiple traverse units are arranged are arranged close to each other, they can be prevented from interfering with each other. In other words, even if the rotating blades arranged adjacent to each other in the above arrangement direction are arranged close to each other so that the rotation trajectories of the adjacent rotating blades partially overlap each other in the above arrangement direction, it is possible to prevent the adjacent rotating blades in the above arrangement direction from interfering with each other. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special Publication No. 3-72544 Summary of the Invention [Problem to be solved by the invention]

[0006] In the traverse device of Patent Document 1, in the case of a configuration using a worm gear, the worm and the worm wheel always mesh with each other, so that the rotating blades of the multiple traverse units are always maintained in a state of rotating synchronously. Therefore, it is possible to prevent the traverse device from being damaged by the adjacent rotating blades in the arrangement direction of the multiple traverse units interfering with each other. However, due to the configuration of the worm gear, it is difficult to eliminate the backlash between the worm and the worm wheel, and there is a problem that it is difficult to perform the traverse control, which rotates a pair of rotating blades in opposite directions to each other to traverse the yarn, with high accuracy. On the other hand, in the case of a configuration using a toothed transmission belt in the traverse device of Patent Document 1, the problem of backlash between the worm and the worm wheel does not occur, so that the traverse control can be performed with high accuracy. However, in the case of a configuration using a toothed transmission belt, there is a risk that the toothed transmission belt will be damaged, and if the toothed transmission belt is damaged, the synchronous rotation of the rotating blades of the multiple traverse units will be impaired. If the synchronous rotation of the rotor blades is impaired due to damage to the toothed transmission belt, adjacent rotor blades in the arrangement direction of the multiple traverse units will interfere with each other, resulting in damage to the traverse device.

[0007] The present invention has been made in consideration of the above-mentioned situation, and aims to provide a traverse device that can perform high-precision traverse control and can effectively prevent interference between adjacent rotor blades in the direction in which multiple traverse units are arranged, thereby preventing damage to the device. [Means for solving the problem]

[0008] (1) The traverse device of the present invention is A traverse device including a plurality of traverse units that traverse a yarn to be wound into a package, the plurality of traverse units being arranged side by side, a drive motor; and a toothed transmission belt that is driven by the drive motor and transmits a synchronous driving force to the plurality of traverse units, Each of the plurality of traverse units includes A traverse guide that guides a traverse locus, which is a locus along which the yarn is reciprocated and traversed; A pair of rotary blades that rotate in opposite directions to each other to traverse the yarn along the traverse guide and transfer the yarn at both ends of the traverse path; a driving force transmission shaft that is driven by the driving force transmitted from the toothed transmission belt and that transmits the driving force to the rotor blades; an interference avoidance cam provided on the driving force transmission shaft to avoid interference between the rotor blades arranged adjacent to each other in an arrangement direction in which the plurality of traverse units are arranged; having The rotor blades that are adjacent to each other in the arrangement direction and rotate in opposite directions in the plurality of traverse units are arranged along the same plane, The interference avoidance cams adjacent to each other in the arrangement direction in the plurality of traverse units include When the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction are the same, the interference avoidance cams adjacent to each other in the arrangement direction rotate together with the driving force transmission shafts without coming into contact with each other, When a deviation occurs in the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction, the interference avoidance cams adjacent to each other in the arrangement direction come into contact with each other to regulate the deviation in the rotation speeds of the driving force transmission shafts and to avoid interference between the rotating blades adjacent to each other in the arrangement direction. It is characterized by:

[0009] According to the traverse device described in (1) above, a synchronous driving force is transmitted to the multiple traverse units by a toothed transmission belt, so that a gear mechanism for transmitting the driving force between the multiple traverse units is not required. Therefore, there is no problem of backlash as in a configuration in which a worm gear is used to transmit the driving force between the multiple traverse units, and the traverse control in which the pair of rotary vanes are rotated in opposite directions to each other to traverse the yarn can be performed with high accuracy. Furthermore, there is no problem of backlash as in a configuration in which a worm gear is used to transmit the driving force between the multiple traverse units, so that noise can be suppressed. Furthermore, according to the above traverse device, in a normal operating state in which the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction of the multiple traverse units are the same, the interference avoidance cams provided on the adjacent driving force transmission shafts rotate without abutting each other, and the normal operating state in which the adjacent rotary vanes rotate synchronously is maintained. On the other hand, if the toothed transmission belt is damaged in the traverse device, a difference will occur in the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction of the multiple traverse units. However, with the above-mentioned traverse device, when a difference occurs in the rotation speeds of adjacent drive force transmission shafts, the interference avoidance cams provided on the adjacent drive force transmission shafts come into contact with each other, restricting the difference in rotation speed between the adjacent drive force transmission shafts and preventing interference between adjacent rotor blades. Therefore, with the above-mentioned traverse device, it is possible to perform highly accurate traverse control and suppress noise, and further, it is possible to preferably prevent interference between adjacent rotor blades in the direction in which multiple traverse units are lined up, thereby preventing damage to the device.

[0010] (2) The traverse device of the present invention is A traverse device including a plurality of traverse units that traverse a yarn to be wound into a package, the plurality of traverse units being arranged side by side, Each of the plurality of traverse units includes A traverse guide that guides a traverse locus, which is a locus along which the yarn is reciprocated and traversed; A pair of rotary blades that rotate in opposite directions to each other to traverse the yarn along the traverse guide and transfer the yarn at both ends of the traverse path; A drive motor; a driving force transmission shaft that is driven by the driving force transmitted from the driving motor and that transmits the driving force to the rotary blades; an interference avoidance cam provided on the driving force transmission shaft to avoid interference between the rotor blades arranged adjacent to each other in an arrangement direction in which the plurality of traverse units are arranged; having The rotor blades that are adjacent to each other in the arrangement direction and rotate in opposite directions in the plurality of traverse units are arranged along the same plane, The interference avoidance cams adjacent to each other in the arrangement direction in the plurality of traverse units include When the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction are the same, the interference avoidance cams adjacent to each other in the arrangement direction rotate together with the driving force transmission shafts without coming into contact with each other, When a deviation occurs in the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction, the interference avoidance cams adjacent to each other in the arrangement direction come into contact with each other to regulate the deviation in the rotation speeds of the driving force transmission shafts and avoid interference between the rotary vanes adjacent to each other in the arrangement direction, The control unit further includes a control unit that controls the drive motors provided in the plurality of traverse units to rotate at the same rotation speed. It is characterized by:

[0011] According to the traverse device described in (2) above, the rotary vanes of each traverse unit are rotated and driven via a driving force transmission shaft by a driving motor individually provided in each traverse unit. Therefore, a gear mechanism for transmitting driving force between multiple traverse units is not required. As a result, a rattle problem does not occur as in a configuration in which a driving force is transmitted between multiple traverse units using a worm gear, and traverse control for traversing the yarn by rotating a pair of rotary vanes in opposite directions to each other can be performed with high accuracy. Furthermore, since a rattle problem does not occur as in a configuration in which a driving force is transmitted between multiple traverse units using a worm gear, noise can be suppressed. Furthermore, the driving motors of the multiple traverse units are controlled to rotate at the same rotation speed by the control of the control unit, a state in which the rotary vanes of the multiple traverse units rotate synchronously is maintained. In addition, according to the above-mentioned traverse device, in a normal operating state in which the rotation speeds of adjacent driving force transmission shafts in the arrangement direction of the multiple traverse units are the same, the interference avoidance cams provided on adjacent driving force transmission shafts do not come into contact with each other, the driving force transmission shafts rotate, and the normal operating state in which adjacent rotary vanes rotate synchronously is maintained. On the other hand, in the traverse device, if a failure occurs in the driving motor of one of the multiple traverse units, a difference in the rotation speeds of adjacent driving force transmission shafts in the arrangement direction of the multiple traverse units will occur. However, according to the above-mentioned traverse device, when a difference in the rotation speeds of adjacent driving force transmission shafts occurs, the interference avoidance cams provided on adjacent driving force transmission shafts come into contact with each other, the difference in the rotation speeds of adjacent driving force transmission shafts is regulated, and interference between adjacent rotary vanes is prevented. Therefore, the above-mentioned traverse device can perform highly accurate traverse control and suppress noise, and further, can effectively prevent interference between adjacent rotor blades in the direction in which multiple traverse units are arranged, thereby preventing damage to the device.

[0012] (3) In the traverse device of the present invention, the interference avoidance cam has a plurality of protrusions that protrude radially along a radial direction with the driving force transmission shaft as a center, When a deviation occurs in the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction, the protrusions of the interference avoidance cams adjacent to each other in the arrangement direction come into contact with each other to regulate the deviation in the rotation speeds of the driving force transmission shafts. It is characterized by:

[0013] According to the traverse device described in (3) above, the interference avoidance cam is provided with a plurality of protrusions that protrude radially in the radial direction of the drive force transmission shaft, and when a difference in rotation speed occurs between adjacent drive force transmission shafts, the protrusions come into contact with each other, thereby regulating the difference in rotation speed between the adjacent drive force transmission shafts. This makes it possible to configure an interference avoidance cam in which a structure for regulating the difference in rotation speed between adjacent drive force transmission shafts is arranged in a space-efficient manner along the circumferential direction of the drive force transmission shaft. This makes it possible to make the interference avoidance cam more compact and further simplify the structure.

[0014] (4) In the traverse device of the present invention, The plurality of protrusions are provided along an outer periphery of the interference avoidance cam and are arranged at equal angular intervals in the circumferential direction of the interference avoidance cam. It is characterized by:

[0015] According to the traverse device described in (4) above, the protrusions that regulate the difference in rotation speed between adjacent drive force transmission shafts are arranged at equal angular intervals around the circumference of the interference avoidance cam, making it possible to accurately control the amount of rotation speed deviation that is regulated between adjacent drive force transmission shafts.

[0016] It is not essential that the traverse device according to the present invention has all of the configurations described in (1) or (2) above and the configurations described in (3) and (4) above. For example, the traverse device according to the invention relating to the traverse device described in (1) or (2) above may be a device that does not have the configuration described in (3) above or the configurations described in (3) and (4) above. Moreover, a device that has the configurations (1) or (2) above and the configuration (3) above may be a traverse device according to the present invention. Moreover, a device that has the configurations (1) or (2) above and the configurations (3) and (4) above may be a traverse device according to the present invention. Effect of the Invention

[0017] According to the present invention, it is possible to provide a traverse device that can perform highly accurate traverse control and can effectively prevent adjacent rotor blades from interfering with each other in the direction in which multiple traverse units are arranged, thereby preventing damage to the device. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a perspective view showing the overall configuration of a yarn winding machine equipped with a traverse device. [Diagram 2] 1 is a perspective view showing a traverse device according to a first embodiment of the present invention. FIG. [Diagram 3] FIG. 3 is a plan view of the traverse device shown in FIG. 2. [Figure 4] FIG. 3 is a side view of the traverse device shown in FIG. 2. [Diagram 5] FIG. 2 is a bottom view of a traverse unit in the traverse device. [Figure 6] 3 is a diagram showing a schematic configuration for transmitting a driving force in a traverse unit of the traverse device shown in FIG. 2. FIG. [Figure 7] 1 is a diagram showing an arrangement of a pair of rotor blades provided on each of a plurality of traverse units. FIG. [Figure 8]FIG. 6 is a perspective view showing a traverse device according to a second embodiment of the present invention. [Figure 9] FIG. 8 is a plan view of the traverse device shown in FIG. [Figure 10] FIG. 8 is a side view of the traverse device shown in FIG. [Figure 11] 8 is a diagram showing a schematic configuration for transmitting a driving force in a traverse unit of the traverse device shown in FIG. 7. FIG. [Figure 12] 8 is a block diagram showing an outline of a control configuration of the traverse device shown in FIG. 7. [Figure 13] FIG. 13 is a perspective view showing a traverse device according to a modified example, illustrating a part of the traverse device. [Figure 14] FIG. 14 is a plan view of the traverse device shown in FIG. 13, showing a part of the traverse device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a traverse device that includes a plurality of traverse units that traverse a yarn to be wound into a package, and that can be widely applied to various applications.

[0020] A traverse device according to an embodiment of the present invention is provided in a textile machine such as a yarn winder that winds up yarn spun from a spinning machine. FIG. 1 is a perspective view showing the overall configuration of a yarn winder 100 equipped with a traverse device. In the following description, the yarn winder 100 will first be described as an example of a textile machine equipped with a traverse device, and then a traverse device 1 (see FIG. 2) according to a first embodiment of the present invention and a traverse device 2 (see FIG. 8) according to a second embodiment of the present invention will be described. In the following description, the up-down direction, the front-rear direction, and the left-right direction of the yarn winder 100 and the traverse devices (1, 2) equipped in the yarn winder 100 are defined as shown by arrows in FIG. 1 and in FIGS. 2 to 10 described later.

[0021] [Yarn winding machine] 1, a yarn winder 100 equipped with the traverse device 1 or traverse device 2 is configured as a textile machine for winding a plurality of yarns 101 spun from a spinning machine (not shown) into a plurality of packages 102. The yarn winder 100 is configured to include a base frame 103, a main body frame 104 supported on the base frame 103, a disk-shaped turret plate 105 supported by the main body frame 104, two bobbin holders (106a, 106b) supported by the turret plate 105, a lifting frame 107 supported by the main body frame 104, and the like.

[0022] The turret plate 105 is provided in a disk shape and configured to rotate around a horizontal axis relative to the main body frame 104. One end of each of the two bobbin holders (106a, 106b) is supported by the turret plate 105 and is provided so as to extend in a cantilever manner on the left side of the turret plate 105. The bobbin holders (106a, 106b) are rotated by a drive motor (not shown) provided on the right side of the turret plate 105.

[0023] Furthermore, a plurality of bobbins (108a, 108b) are attached to each of the two bobbin holders (106a, 106b) supported by the turret plate 105. That is, a plurality of bobbins 108a are attached to one bobbin holder 106a, and a plurality of bobbins 108b are attached to the other bobbin holder 106b. The plurality of bobbins 108a are attached to the bobbin holder 106a in a state where they are lined up in series along the longitudinal direction of the bobbin holder 106a extending in a cantilevered manner. The plurality of bobbins 108b are attached to the bobbin holder 106b in a state where they are lined up in series along the longitudinal direction of the bobbin holder 106b extending in a cantilevered manner.

[0024] The turret plate 105 is configured to be rotatable by 180° around a horizontal axis. The yarn 101 is wound around the bobbin 108a of the bobbin holder 106a, which is positioned at the upper winding position, to form the package 102. FIG. 1 illustrates a state in which the bobbin holder 106a is positioned at the upper winding position where the yarn 101 is wound into the package 102, and the other bobbin holder 106b is positioned at the lower standby position. When the package 102 is fully wound by winding the yarn 101 around the multiple bobbins 108a of the bobbin holder 106a, the turret plate 105 rotates 180°, and the other bobbin holder 106b is newly positioned at the winding position. The yarn 101 is then wound around the multiple bobbins 108b of the other bobbin holder 106b, which is newly positioned at the winding position, to form the package 102.

[0025] A lifting frame 107 supported by the main body frame 104 is provided so as to be movable up and down relative to the main body frame 104 in the up-down direction. The lifting frame 107 is equipped with a traverse device (1, 2) according to a first or second embodiment of the present invention, which will be described later. The traverse device (1, 2) provided on the lifting frame 107 includes a plurality of traverse units (13, 30), which will be described later, that traverse the yarn 101 to be wound into the package 102. The lifting frame 107 is also provided with a plurality of contact rollers 109. The plurality of contact rollers 109 are arranged side by side in the left-right direction on the lifting frame 107, and are each supported so as to be rotatable.

[0026] In the lifting frame 107, the multiple traverse units (13, 30) of the traverse device (1, 2) and the multiple contact rollers 109 are arranged to correspond to each other in the vertical direction. In addition, the cover 107a of the lifting frame 107 is provided with multiple guide grooves 107b into which the yarn 101 is inserted. The yarn 101 is inserted into each of the multiple guide grooves 107b from above downward. The yarn 101 inserted into each of the multiple guide grooves 107b is fed downward while being traversed by each of the multiple traverse units (13, 30) of the traverse device (1, 2) provided on the lifting frame 107. The yarn 101 sent downward while being traversed by each of the multiple traverse units (13, 30) comes into contact with a part of the circumferential surface of the contact roller 109, is guided to the bobbins (108a, 108b) arranged below the contact roller 109, and is wound onto the bobbins (108a, 108b) to form the package 102. In this manner, the yarn 101 is sent downward while being traversed by the traverse units (13, 30) in the traverse device (1, 2) mounted on the lifting frame 107, and is wound into the package 102.

[0027] The traverse device 1 according to the first embodiment of the present invention and the traverse device 2 according to the second embodiment of the present invention are provided in the above-mentioned yarn winding machine 100. The traverse devices (1, 2) according to the first and second embodiments of the present invention will be described below.

[0028] [First embodiment] (Outline of the traverse device) FIG. 2 is a perspective view showing a traverse device 1 according to a first embodiment of the present invention. FIG. 3 is a plan view of the traverse device 1. FIG. 4 is a side view of the traverse device 1. Referring to FIGS. 1 to 4, the traverse device 1 is provided in a yarn winding machine 100, and is mounted on a lifting frame 107 of the yarn winding machine 100. The traverse device 1 includes a plurality of traverse units 13 that traverse a yarn 101 to be wound into a package 102, and the plurality of traverse units 13 are arranged in series along the left-right direction. The traverse device 1 is configured to include a drive motor 11 and a toothed transmission belt 12 in addition to the plurality of traverse units 13. The plurality of traverse units 13, the drive motor 11, and the toothed transmission belt 12 are built in the lifting frame 107. The plurality of traverse units 13 and the drive motor 11 are supported by the lifting frame 107 within the lifting frame 107.

[0029] 2 to 4, the drive motor 11 is provided as an electric motor and configured as a drive source that generates a driving force for driving the multiple traverse units 13. The toothed transmission belt 12 is driven by the drive motor 11 and provided as a power transmission belt for transmitting a synchronous driving force to the multiple traverse units 13. The toothed transmission belt 12 is provided as an endless power transmission belt that is driven to rotate by the drive motor 11 and has teeth on both its inner and outer circumferential surfaces. Note that the teeth provided on the toothed transmission belt 12 are omitted from the drawings.

[0030] The driving motor 11 is provided with a driving pulley 11a fixed to the end of its output shaft. Each of the multiple traverse units 13 is provided with a driven pulley 15. The driven pulley 15 is disposed on the upper surface side of each traverse unit 13. The driving pulley 11a and the multiple driven pulleys 15 provided on each of the multiple traverse units 13 are all provided as toothed pulleys, and teeth are provided on the outer periphery. In the drawings, the teeth provided on the driving pulley 11a and the driven pulley 15 are omitted. The toothed transmission belt 12 is wound around the driving pulley 11a and the multiple driven pulleys 15. The toothed transmission belt 12 is wound around the driving pulley 11a and the multiple driven pulleys 15 in a state where the teeth mesh with each other. In order to maintain an appropriate belt tension, the toothed transmission belt 12 is wound around an intermediate pulley 14 between the driving pulley 11a and the multiple driven pulleys 15.

[0031] When the drive pulley 11a rotates due to the rotation of the drive motor 11, the rotation of the drive pulley 11a is transmitted to the multiple driven pulleys 15 via the toothed transmission belt 12. The multiple driven pulleys 15 provided on the multiple traverse units 13 are configured as pulleys with the same diameter and the same number of teeth, and rotate at the same rotational speed when driven by the toothed transmission belt 12. As a result, a synchronous driving force is transmitted from the toothed transmission belt 12 to the multiple driven pulleys 15. In other words, a synchronous driving force is transmitted from the toothed transmission belt 12 to the multiple traverse units 13.

[0032] The toothed power transmission belt 12 is wound around a plurality of driven pulleys 15 provided on the upper surface of a plurality of traverse units 13 arranged in series along the left-right direction, with the position where the toothed power transmission belt 12 is wound alternately between the front side and the rear side. That is, the inner peripheral side and the outer peripheral side of the toothed power transmission belt 12 are alternately wound around the plurality of driven pulleys 15 arranged in series along the left-right direction. Therefore, the driven pulleys 15 adjacent to each other in the left-right direction are configured to rotate in opposite directions. That is, the driven pulley arranged next to the driven pulley 15 that rotates clockwise as viewed from above rotates counterclockwise as viewed from above.

[0033] (Traverse unit) Fig. 5 is a bottom view of one traverse unit 13 in the traverse device 1. Fig. 6 is a diagram showing a schematic configuration for transmitting a driving force in the traverse unit 13 of the traverse device 1. With reference to Figs. 2 to 6, the traverse device 1 is provided with a plurality of traverse units 13 that traverse a yarn 101 to be wound into a package 102, and the plurality of traverse units 13 are arranged in series in the left-right direction. Each of the plurality of traverse units 13 has a driven pulley 15, a housing 16, a traverse guide 17, a pair of rotary vanes (18, 19), a driving force transmission mechanism 20, and an interference avoidance cam 21.

[0034] The driven pulley 15 is provided on the upper surface side of the housing 16, and is configured as a pulley to which the driving force transmitted from the drive motor 11 to the traverse unit 13 via the toothed transmission belt 12 is input. The driven pulley 15 is supported on the upper surface side of the housing 16 so as to be freely rotatable relative to the housing 16. The housing 16 accommodates a driving force transmission mechanism 20. A pair of rotary vanes (18, 19) is supported on the lower surface side of the housing 16 so as to be freely rotatable relative to the housing 16. Note that FIG. 6 shows the traverse unit 13 in a schematic manner with the housing 16 omitted from illustration. Also, FIG. 6 shows a cross section in a state where the cross section position is different from the middle of the power transmission path in the driving force transmission mechanism 20. More specifically, FIG. 6 shows a cross section along the front-rear direction for the driven pulley 15 side of the power transmission path of the driving force transmission mechanism 20, and a cross section along the left-right direction for the pair of rotary vanes (18, 19) side of the power transmission path of the driving force transmission mechanism 20.

[0035] 2 to 5, the traverse guide 17 is provided as a guide member for guiding a traverse locus, which is a locus along which the yarn 101 traverses back and forth. In this embodiment, the traverse guide 17 is provided in the housing 16. The yarn 101 is traversed by a pair of rotary blades (18, 19) described later. The traverse guide 17 is configured to guide a traverse locus, which is a locus along which the yarn 101 traverses back and forth by the pair of rotary blades (18, 19). Note that in Figs. 3, 5, and 6, the yarn 101 whose traverse locus is guided by the traverse guide 17 is not shown. The traverse guide 17 is provided as a front end of the housing 16, and is configured to have an edge portion extending in an arc shape along a horizontal plane. More specifically, the traverse guide 17 is configured to have an edge portion extending in an arc shape in a state of being gently curved forward and protruding along the left-right direction at the front end of the housing 16. When the yarn 101 is traversed back and forth by the pair of rotating blades (18, 19), the yarn 101 is traversed back and forth while sliding against an edge portion that extends in an arc shape along the horizontal plane of the traverse guide 17. In this way, the traverse trajectory of the yarn 101 is guided.

[0036] Fig. 7 is a diagram showing an arrangement of a pair of rotary blades (18, 19) provided in each of the multiple traverse units 13. Fig. 7 shows the pair of rotary blades (18, 19) as viewed from below, and only shows a pair of rotary blades (18, 19) provided in each of the multiple traverse units 13. With reference to Figs. 2 to 7, the pair of rotary blades (18, 19) are configured to rotate in opposite directions to each other to traverse the yarn 101 along the traverse guide 17 and to transfer the yarn 101 at both ends of the traverse trajectory.

[0037] A pair of rotary vanes (18, 19) are provided in each traverse unit 13 and supported below the housing 16 so as to be rotatable about a vertical axis. The pair of rotary vanes (18, 19) are configured to rotate in opposite directions by transmitting a driving force transmitted from the driven pulley 15 through a driving force transmission mechanism 20 (described later) housed in the housing 16, and are rotated about a vertical axis. The rotary vanes 18 and the rotary vanes 19 are arranged in a vertical line, and in this embodiment, the rotary vane 18 is arranged on the lower side and the rotary vane 19 is arranged on the upper side. The rotary vanes 18 and the rotary vanes 19 are arranged so as to rotate in opposite directions by being driven by the driving force transmission mechanism 20 (described later). With reference to FIG. 5, for example, when the rotary vane 18 rotates in a clockwise direction as viewed from below, the rotary vane 19 is arranged so as to rotate in a counterclockwise direction as viewed from below. In FIG. 5, the rotation direction of the rotary vane 18 rotating in a clockwise direction as viewed from below is indicated by an arrow X1, and the rotation direction of the rotary vane 19 rotating in a counterclockwise direction as viewed from below is indicated by an arrow X2. As described above, the driven pulleys 15 adjacent to each other in the left-right direction in which the multiple traverse units 13 are arranged rotate in opposite directions. This is the same for the rotary vanes 18 and 19 that are rotated by the driving force transmitted from the driven pulley 15 transmitted via a driving force transmission mechanism 20 described later. That is, the rotary vanes 18 adjacent to each other in the direction in which the multiple traverse units 13 are arranged rotate in opposite directions. The rotary vanes 19 adjacent to each other in the direction in which the multiple traverse units 13 are arranged also rotate in opposite directions.

[0038] Moreover, the rotary vane 18 and the rotary vane 19 are each provided with three vanes (18a, 19a). More specifically, the rotary vane 18 is provided with three vanes 18a arranged at equal angular intervals in the circumferential direction and extending radially along the radial direction. The rotary vane 19 is provided with three vanes 19a arranged at equal angular intervals in the circumferential direction and extending radially along the radial direction. The three vanes 18a of the rotary vane 18 are provided so as to extend radially along a horizontal plane. The three vanes 19a of the rotary vane 19 are also provided so as to extend radially along a horizontal plane.

[0039] In addition, in the multiple traverse units 13, adjacent rotating blades (18, 19) in the arrangement direction Y, which is the direction in which the multiple traverse units 13 are arranged, are arranged along the same plane that extends parallel to the horizontal plane. In each traverse unit 13, the rotating blades 18 and the rotating blades 19 are arranged vertically. The rotating blades 18 adjacent to each other in the arrangement direction Y rotate in opposite directions and are arranged along a plane parallel to the horizontal plane, and the rotating blades 19 adjacent to each other in the arrangement direction Y also rotate in opposite directions and are arranged along another plane parallel to the horizontal plane. That is, the rotating blades 18 adjacent to each other in the arrangement direction Y and rotating in opposite directions in the multiple traverse units 13 are arranged along one same plane that extends horizontally. The rotating blades 19 adjacent to each other in the arrangement direction Y and rotating in opposite directions in the multiple traverse units 13 are also arranged along another same plane that extends horizontally. In addition, the arrangement direction Y in which the multiple traverse units 13 are arranged is a direction parallel to the left-right direction in this embodiment, and is indicated by a dashed double-ended arrow Y in FIGS.

[0040] In addition, the adjacent rotary vanes 18 in the arrangement direction Y in the multiple traverse units 13 are arranged close to each other so that the rotation trajectories of the rotary vanes 18 overlap on a plane parallel to the horizontal plane. That is, the rotation trajectories, which are the areas through which the blades 18a of the rotary vanes 18 pass, are set to overlap between the adjacent rotary vanes 18 in the arrangement direction Y. Since the rotation trajectories of the adjacent rotary vanes 18 in the arrangement direction Y overlap, one of the adjacent rotary vanes 18 in the arrangement direction Y will enter into the rotation trajectory of the other rotary vane 18. Therefore, the adjacent rotary vanes 18 in the arrangement direction Y are configured to rotate in opposite directions with an angle difference set so that they do not interfere with each other. Similarly, the adjacent rotary vanes 19 in the arrangement direction Y in the multiple traverse units 13 are arranged close to each other so that the rotation trajectories of the rotary vanes 19 overlap on a plane parallel to the horizontal plane. That is, the rotation trajectories, which are the areas through which the blades 19a of the rotor vanes 19 pass, are set to overlap between adjacent rotor vanes 19 in the arrangement direction Y. Since the rotation trajectories of adjacent rotor vanes 19 in the arrangement direction Y overlap, one of the rotor vanes 19 adjacent to each other in the arrangement direction Y enters into the rotation trajectory of the other rotor vane 19. Therefore, the rotor vanes 19 adjacent to each other in the arrangement direction Y are configured to rotate in opposite directions with an angle difference set so that they do not interfere with each other. As described above, the rotor vanes 19 rotate in the opposite direction to the rotor vanes 18 of the same traverse unit 13, and also rotate in the opposite direction to the rotor vanes 19 of the traverse units 13 adjacent to each other in the arrangement direction Y. For example, in a traverse unit 13 in which the rotor blades 18 rotate clockwise when viewed from below and the rotor blades 19 rotate counterclockwise when viewed from below, in a traverse unit 13 adjacent to the traverse unit 13 in the arrangement direction Y, the rotor blades 18 rotate counterclockwise when viewed from below and the rotor blades 19 rotate clockwise when viewed from below.

[0041] In each traverse unit 13, the center of rotation of the rotary blade 18 rotating about the vertical axis and the center of rotation of the rotary blade 19 similarly rotating about the vertical axis are set eccentrically to each other. In this embodiment, the center of rotation of the rotary blade 18 and the center of rotation of the rotary blade 19 are set eccentrically in the left-right direction along the traverse locus along which the yarn 101 is guided and traversed by the traverse guide 17.

[0042] When the yarn 101 is traversed back and forth along the traverse trajectory by the pair of rotating blades (18, 19) while being guided by the traverse guide 17, the yarn 101 is transferred between the pair of rotating blades (18, 19) at both ends of the traverse trajectory.

[0043] When the yarn 101 is transferred from the rotary vane 18 to the rotary vane 19, the yarn 101 is first hooked on the tip side of one of the vanes 18a of the rotary vane 18 and held by the vane 18a of the rotary vane 18, and moves along the traverse trajectory to one end of the traverse trajectory as the rotary vane 18 rotates while being guided by the traverse guide 17. Then, when the yarn 101 moves to one end of the traverse trajectory together with the vane 18a of the rotary vane 18, the tip of the vane 18a of the rotary vane 18 that has been holding the yarn 101 is positioned slightly inside the traverse guide 17, and the yarn 101 is released from the tip of the vane 18a of the rotary vane 18. At this time, at the same time that the yarn 101 leaves the tip of the blade 18a of the rotary blade 18, the tip side of one blade 19a of the rotary blade 19 rotating in the opposite direction to the rotary blade 18 enters the traverse trajectory. Then, the yarn 101 that has left the blade 18a of the rotary blade 18 is caught by the blade 19a of the rotary blade 19 that has entered the traverse trajectory, and is held by the blade 19a of the rotary blade 19. As a result, the yarn 101 is transferred from the rotary blade 18 to the rotary blade 19 at one of both ends of the traverse trajectory.

[0044] When the thread 101 is transferred from the rotary blade 18 to the rotary blade 19, the thread 101 is hooked on the tip side of one blade 19a of the rotary blade 19 and held by the blade 19a of the rotary blade 19, and moves along the traverse trajectory to the other end of the traverse trajectory as the rotary blade 19 rotates while being guided by the traverse guide 17. Then, when the thread 101 moves to the other end of the traverse trajectory together with the blade 19a of the rotary blade 19, the tip of the blade 19a of the rotary blade 19 that has been holding the thread 101 is positioned slightly inside the traverse guide 17, and the thread 101 is released from the tip of the blade 19a of the rotary blade 19. At this time, at the same time that the yarn 101 leaves the tip of the blade 19a of the rotary blade 19, the tip side of one blade 18a of the rotary blade 18 rotating in the opposite direction to the rotary blade 19 enters the traverse trajectory. Then, the yarn 101 that has left the blade 19a of the rotary blade 19 is caught by the blade 18a of the rotary blade 18 that has entered the traverse trajectory, and is held by the blade 18a of the rotary blade 18. As a result, the yarn 101 is handed over from the rotary blade 19 to the rotary blade 18 at the other end of the traverse trajectory.

[0045] As described above, the pair of rotary blades (18, 19) are configured to rotate in opposite directions to each other to traverse the yarn 101 along the traverse guide 17 and to transfer the yarn 101 at both ends of the traverse path.

[0046] 6, in each traverse unit 13, a driving force transmission mechanism 20 is provided as a mechanism for transmitting the driving force transmitted from the toothed transmission belt 12 to the driven pulley 15 to the rotary vanes (18, 19). The driving force transmission mechanism 20 is provided with a first driving force transmission shaft 22, a second driving force transmission shaft 23, and a third driving force transmission shaft 24 as driving force transmission shafts that are driven by the driving force transmitted from the toothed transmission belt 12 and transmit the driving force to the rotary vanes (18, 19).

[0047] The first driving force transmission shaft 22 is provided as a solid rotating shaft that rotates about an axis in the vertical direction, and the driven pulley 15 is fixed to the upper end side. When the driven pulley 15 is rotationally driven by the toothed transmission belt 12, the first driving force transmission shaft 22 also rotates together with the driven pulley 15. In addition, a gear 25 and a gear 26 are provided on the lower half side of the first driving force transmission shaft 22, aligned in the vertical direction. Both the gear 25 and the gear 26 are fixed to the first driving force transmission shaft 22, with the gear 25 disposed on the upper side and the gear 26 disposed on the lower side. The gear 25 is provided as a gear for transmitting driving force to the rotary vane 18 side, and the gear 26 is provided as a gear for transmitting driving force to the rotary vane 19 side.

[0048] The second driving force transmission shaft 23 is provided as a solid rotating shaft that rotates around a vertical axis, and the rotary vane 18 is fixed to the lower end side. A gear 27 is provided on the upper end side of the second driving force transmission shaft 23. The gear 27 is fixed to the second driving force transmission shaft 23. The gear 27 is configured so that the driving force is transmitted from the gear 25 provided on the first driving force transmission shaft 22 via the intermediate gear 28. That is, the gear 25 on the first driving force transmission shaft 22 side and the intermediate gear 28 mesh with each other, and the intermediate gear 28 meshes with the gear 27 on the second driving force transmission shaft 23 side. When the gear 25 rotates together with the first driving force transmission shaft 22, the intermediate gear 28 meshing with the gear 25 rotates in the opposite direction to the gear 25, and further, the gear 27 meshing with the intermediate gear 28 rotates together with the second driving force transmission shaft 23 in the opposite direction to the intermediate gear 28. Therefore, the gears 25 and 27 rotate in the same direction, and the first driving force transmission shaft 22 and the second driving force transmission shaft 23 rotate in the same direction. Then, the rotary vane 18 rotates together with the second driving force transmission shaft 23. Therefore, the rotary vane 18 rotates in the same direction as the driven pulley 15.

[0049] The third driving force transmission shaft 24 is provided as a cylindrical hollow shaft that rotates around a vertical axis, and the rotary vane 19 is fixed to the lower end side. That is, the rotary vane 19 is fixed to the outer periphery of the lower end of the third driving force transmission shaft 24 as a cylindrical hollow shaft. The second driving force transmission shaft 23 is disposed inside the cylindrical third driving force transmission shaft 24 in a state of penetrating. The rotation center of the second driving force transmission shaft 23, which is the rotation center of the rotary vane 18, and the rotation center of the cylindrical third driving force transmission shaft 24, which is the rotation center of the rotary vane 19, are set eccentrically to each other. A gear 29 is provided on the upper end side of the third driving force transmission shaft 24. The gear 29 is fixed to the outer periphery of the upper end side of the cylindrical third driving force transmission shaft 24. The gear 29 is configured to mesh with the gear 26 provided on the first driving force transmission shaft 22, and the driving force is transmitted from the gear 26. When the gear 26 rotates together with the first driving force transmission shaft 22, the gear 29 meshing with the gear 26 rotates together with the third driving force transmission shaft 24 in the opposite direction to the gear 26. Therefore, the first driving force transmission shaft 22 and the third driving force transmission shaft 24 rotate in the opposite directions. Then, the rotary vane 19 rotates together with the third driving force transmission shaft 24. Therefore, the rotary vane 19 rotates in the opposite direction to the driven pulley 15.

[0050] As described above, the driving force transmission mechanism 20 includes the first driving force transmission shaft 22, the second driving force transmission shaft 23, and the third driving force transmission shaft 24 as driving force transmission shafts that are driven by the driving force transmitted from the toothed transmission belt 12 and transmit the driving force to the rotary vanes (18, 19). The second driving force transmission shaft 23 that rotates together with the rotary vane 18 rotates in the same direction as the first driving force transmission shaft 22 that rotates together with the driven pulley 15 that is driven to rotate by the toothed transmission belt 12, and the third driving force transmission shaft 24 that rotates together with the rotary vane 19 rotates in the opposite direction. For this reason, the rotary vane 18 and the rotary vane 19 are configured to rotate in opposite directions to each other. In the driving force transmission mechanism 20, the number of teeth of gears 25 and 27 and the number of teeth of gears 26 and 29 are set so that the rotating vanes 18 and 19, which rotate in opposite directions, rotate in opposite directions at the same rotational speed.

[0051] 2 to 6, the interference avoidance cam 21 is provided in each traverse unit 13 as a member for avoiding interference between the rotary vanes (18, 19) arranged adjacent to each other in the arrangement direction Y in which the multiple traverse units 13 are arranged. That is, the interference avoidance cam 21 is provided as a member for avoiding interference between the rotary vanes 18 arranged adjacent to each other in the arrangement direction Y, and for avoiding interference between the rotary vanes 19 arranged adjacent to each other in the arrangement direction Y.

[0052] The interference avoidance cam 21 is provided in a disk shape, and is provided on a driving force transmission shaft that is driven by the driving force transmitted from the toothed transmission belt 12 and transmits the driving force to the rotary vanes (18, 19). In this embodiment, the interference avoidance cam 21 is provided on a first driving force transmission shaft 22 serving as a driving force transmission shaft. The interference avoidance cam 21 is fixed to the first driving force transmission shaft 22 in a state in which the interference avoidance cam 21 is disposed between the lower end side of the driven pulley 15 and the upper surface side of the housing 16. The interference avoidance cam 21 is fixed to the first driving force transmission shaft 22 in a state in which the radial center position of the disk-shaped interference avoidance cam 21 coincides with the rotation center position of the first driving force transmission shaft 22. In this embodiment, the interference avoidance cam 21 is provided on the first driving force transmission shaft 22 fixed to the driven pulley 15, and therefore rotates together with the driven pulley 15. Just as the adjacent driven pulleys 15 in the arrangement direction Y rotate in directions opposite to each other, the adjacent interference avoidance cams 21 in the arrangement direction Y also rotate in directions opposite to each other.

[0053] The interference avoidance cam 21 may be provided on the second driving force transmission shaft 23 or the third driving force transmission shaft 24, instead of the first driving force transmission shaft 22. When the interference avoidance cam 21 is provided on the second driving force transmission shaft 23, for example, the second driving force transmission shaft 23 is provided so as to penetrate the rotary vane 18 and protrude below the rotary vane 18. The interference avoidance cam 21 is attached to the lower end of the second driving force transmission shaft 23. When the interference avoidance cam 21 is provided on the third driving force transmission shaft 24, for example, the interference avoidance cam 21 is attached to the third driving force transmission shaft 24 between the lower end of the first driving force transmission shaft 22 and the upper surface of the rotary vane 19.

[0054] Moreover, in the multiple traverse units 13, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y are arranged along the same plane extending parallel to the horizontal plane. Moreover, the interference avoidance cam 21 has multiple protrusions 21a that protrude radially along the radial direction centered on the first driving force transmission shaft 22. The multiple protrusions 21a are provided along the outer periphery of the interference avoidance cam 21 and are arranged at equal angular intervals in the circumferential direction.

[0055] In addition, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y in the multiple traverse units 13 are arranged close to each other so that the rotation trajectories of the protrusions 21a partially overlap on a plane parallel to the horizontal plane. That is, the rotation trajectories of the protrusions 21a, which are the areas through which the protrusions 21a of the interference avoidance cams 21 pass, are set to partially overlap between the interference avoidance cams 21 adjacent to each other in the arrangement direction Y. Since the rotation trajectories of the protrusions 21a of the interference avoidance cams 21 adjacent to each other in the arrangement direction Y overlap, the protrusions 21a of one of the interference avoidance cams 21 adjacent to each other in the arrangement direction Y enter into the rotation trajectory of the protrusions 21a of the other interference avoidance cam 21. Therefore, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y are configured to rotate in opposite directions to each other with an angle difference set such that the protrusions 21a do not interfere with each other.

[0056] As described above, the interference avoidance cams 21 are configured to rotate in opposite directions to each other in a state where the angle difference is set such that the adjacent interference avoidance cams 21 in the arrangement direction Y do not interfere with each other. For this reason, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y in the multiple traverse units 13 are configured to rotate together with the first driving force transmission shaft 22 without coming into contact with each other when the rotation speeds (magnitudes of rotation speeds) of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y and rotating in opposite directions are the same. In other words, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y are configured to rotate together with the first driving force transmission shaft 22 without coming into contact with each other when the rotation speeds (magnitudes of rotation speeds) of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y and rotating in opposite directions are the same.

[0057] Further, the interference avoidance cams 21 are configured such that the rotation trajectories of the protrusions 21a of the interference avoidance cams 21 adjacent to each other in the arrangement direction Y partially overlap. For this reason, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y in the multiple traverse units 13 are configured such that, when a deviation occurs in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y, the protrusions 21a of the interference avoidance cams 21 adjacent to each other in the arrangement direction Y come into contact with each other to regulate the deviation in the rotation speeds of the first driving force transmission shafts 22. The interference avoidance cams 21 are configured such that the protrusions 21a come into contact with each other to regulate the deviation in the rotation speeds of the first driving force transmission shafts 22, thereby avoiding interference between the rotary vanes (18, 19) adjacent to each other in the arrangement direction Y. In other words, when a difference occurs in the rotational speed of adjacent first driving force transmission shafts 22 in the arrangement direction Y, the interference avoidance cam 21 is configured to regulate the difference in the rotational speed of the first driving force transmission shafts 22 by abutting the protrusions 21a against each other, thereby avoiding interference between adjacent rotating blades 18 in the arrangement direction Y and avoiding interference between adjacent rotating blades 19 in the arrangement direction Y.

[0058] As described above, when the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y are the same, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y do not come into contact with each other. Therefore, in the normal operating state of the traverse device 1, the interference avoidance cams 21 do not come into contact with each other. However, when the toothed power transmission belt 12 is damaged, a difference occurs in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y. In this case, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y come into contact with each other, and the difference in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y is regulated. Therefore, the difference in the rotation speeds of the rotating vanes 18 adjacent to each other in the arrangement direction Y is also regulated for the rotating vanes 18 to which the driving force is transmitted from the first driving force transmission shaft 22 via the second driving force transmission shaft 23. Similarly, for the rotary vanes 19 to which driving force is transmitted from the first driving force transmission shaft 22 via the third driving force transmission shaft 24, the difference in rotation speed between adjacent rotary vanes 19 in the arrangement direction Y is restricted. Therefore, interference between adjacent rotary vanes 18 in the arrangement direction Y is avoided, and interference between adjacent rotary vanes 19 in the arrangement direction Y is also avoided.

[0059] (Action and effect) According to the above-mentioned traverse device 1, since the synchronous driving force is transmitted to the multiple traverse units 13 by the toothed transmission belt 12, a gear mechanism for transmitting the driving force between the multiple traverse units 13 is not required. Therefore, a problem of backlash as in a configuration in which a worm gear is used to transmit the driving force between the multiple traverse units 13 does not occur, and traverse control in which the pair of rotary vanes (18, 19) are rotated in opposite directions to each other to traverse the yarn 101 can be performed with high accuracy. Furthermore, since a problem of backlash as in a configuration in which a worm gear is used to transmit the driving force between the multiple traverse units 13 does not occur, noise can be suppressed. Furthermore, according to the above-mentioned traverse device 1, in a normal operating state in which the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y of the multiple traverse units 13 are the same, the interference avoidance cams 21 provided on the adjacent first driving force transmission shafts 22 rotate without contacting each other, and the normal operating state in which the adjacent rotary vanes (18, 19) rotate synchronously is maintained. On the other hand, in the traverse device 1, when the toothed transmission belt 12 is damaged, a difference occurs in the rotation speed of the adjacent first driving force transmission shafts 22 in the arrangement direction Y of the multiple traverse units 13. However, according to the above-mentioned traverse device 1, when a difference occurs in the rotation speed of the adjacent first driving force transmission shafts 22, the interference avoidance cams 21 provided on the adjacent first driving force transmission shafts 22 come into contact with each other, and the difference in the rotation speed of the adjacent first driving force transmission shafts 22 is regulated, and interference between the adjacent rotary vanes (18, 19) is prevented. Therefore, according to the above-mentioned traverse device 1, it is possible to perform high-precision traverse control and suppress noise, and further, it is possible to suitably prevent interference between the adjacent rotary vanes (18, 19) in the arrangement direction of the multiple traverse units 13, and to prevent damage to the traverse device 1.

[0060] Furthermore, according to the above-mentioned traverse device 1, the interference avoidance cam 21 is provided with a plurality of protrusions 21a that protrude radially in the radial direction of the first driving force transmission shaft 22, and when a difference in rotation speed occurs between adjacent first driving force transmission shafts 22, the protrusions 21a come into contact with each other, thereby regulating the difference in rotation speed between adjacent first driving force transmission shafts 22. Therefore, it is possible to configure an interference avoidance cam 21 in which a structure for regulating a difference in rotation speed between adjacent first driving force transmission shafts 22 is arranged in a space-efficient manner along the circumferential direction of the first driving force transmission shaft 22. This makes it possible to make the interference avoidance cam 21 compact and further simplify the structure.

[0061] Furthermore, according to the above-described traverse device 1, the protrusions 21a that regulate the difference in rotation speed between adjacent first driving force transmission shafts 22 are arranged at equal angular intervals in the circumferential direction of the interference avoidance cam 21. Therefore, the amount of the rotation speed difference that is regulated between adjacent first driving force transmission shafts 22 can be accurately controlled.

[0062] [Second embodiment] Next, a second embodiment of the present invention will be described. Fig. 8 is a perspective view showing a traverse device 2 according to the second embodiment of the present invention. Fig. 9 is a plan view of the traverse device 2. Fig. 10 is a side view of the traverse device 2. Fig. 11 is a diagram showing a schematic configuration for transmitting a driving force in a traverse unit 30 of the traverse device 2. Fig. 12 is a block diagram showing an outline of a control configuration of the traverse device 2. In the description of the second embodiment, the same reference numerals are used in the drawings to denote the same components as those in the first embodiment described above, or the same reference numerals are used to omit redundant description.

[0063] 1 and 8 to 12, the traverse device 2 is provided in the yarn winding machine 100, and is mounted on a lifting frame 107 of the yarn winding machine 100. The traverse device 2 includes a plurality of traverse units 30 that traverse a yarn 101 to be wound into a package 102, and the plurality of traverse units 30 are arranged in series in the left-right direction. In addition to the plurality of traverse units 30, the traverse device 2 is also configured to include a control unit 32 that controls a drive motor 31 provided in each of the plurality of traverse units 30.

[0064] The traverse device 2 of the second embodiment differs from the traverse device 1 of the first embodiment in that the rotating vanes (18, 19) of each traverse unit 30 are configured to be driven by a drive motor 31 provided in each traverse unit 30. That is, the traverse device 2 does not have one drive motor 11 as a drive source and a toothed transmission belt 12 that transmits the driving force from the drive motor 11, but is configured so that the rotating vanes (18, 19) are driven to rotate by the driving force generated by the drive motor 31 provided in each traverse unit 30.

[0065] 8 to 11, each of the multiple traverse units 30 in the traverse device 2 includes a drive motor 31, a housing 16, a traverse guide 17 provided in the housing 16, a pair of rotary vanes (18, 19), a driving force transmission mechanism 20, and an interference avoidance cam 21. The housing 16, the traverse guide 17, the pair of rotary vanes (18, 19), the driving force transmission mechanism 20, and the interference avoidance cam 21 in the traverse unit 30 are configured similarly to the housing 16, the traverse guide 17, the pair of rotary vanes (18, 19), the driving force transmission mechanism 20, and the interference avoidance cam 21 in the traverse unit 13 of the first embodiment. However, the traverse unit 30 of the second embodiment differs from the traverse unit 13 of the first embodiment in that the driven pulley 15 is not provided, and a drive motor 31 is provided.

[0066] 8 to 11, the drive motor 31 is provided as an electric motor and is provided in each traverse unit 30. The drive motor 31 is configured as, for example, a synchronous motor. The drive motor 31 is configured as a drive source that generates a drive force for rotating the pair of rotary vanes (18, 19) in the opposite directions in each traverse unit 30. The drive motor 31 is disposed above the housing 16 and disposed so as to generate a rotational drive force about a vertical axis.

[0067] 11, an output shaft (not shown) of the drive motor 31 is connected to the first drive force transmission shaft 22 of the drive force transmission mechanism 20, and the rotation of the drive motor 31 is directly input to the first drive force transmission shaft 22. That is, a lower end of the output shaft of the drive motor 31 and an upper end of the first drive force transmission shaft 22 are coupled to each other, and the first drive force transmission shaft 22 rotates together with the rotation of the drive motor 31. Note that the output shaft of the drive motor 31 and the first drive force transmission shaft 22 are not limited to being directly connected to each other, and may be configured to transmit the drive force via meshing between a gear provided on the output shaft of the drive motor 31 and a gear provided on the first drive force transmission shaft 22.

[0068] When the drive motor 31 rotates, the first drive force transmission shaft 22 driven by the drive motor 31 rotates. When the first drive force transmission shaft 22 rotates, the drive force from the first drive force transmission shaft 22 is transmitted to the second drive force transmission shaft 23 through the meshing of the gear 25, the intermediate gear 28, and the gear 27, and the second drive force transmission shaft 23 rotates in the same direction as the first drive force transmission shaft 22. The rotating vane 18 rotates in the same direction as the first drive force transmission shaft 22 together with the second drive force transmission shaft 23. Furthermore, when the first drive force transmission shaft 22 rotates, the drive force from the first drive force transmission shaft 22 is transmitted to the third drive force transmission shaft 24 through the meshing of the gear 26 and the gear 27, and the third drive force transmission shaft 24 rotates in the opposite direction to the first drive force transmission shaft 22. The rotating vane 19 rotates in the opposite direction to the first drive force transmission shaft 22 together with the third drive force transmission shaft 24. Therefore, when the drive motor 31 rotates, the rotary vanes 18 rotate in the same direction and the rotary vanes 19 rotate in the opposite direction relative to the first driving force transmission shaft 22 driven by the drive motor 31. For this reason, the rotary vanes 18 and the rotary vanes 19 are configured to rotate in the opposite directions to each other.

[0069] 8 to 12, the drive motors 31 provided in each of the traverse units 30 are configured to have their rotations controlled by a control unit 32. That is, the traverse device 2 is provided with a control unit 32, and the drive motors 31 provided in each of the traverse units 30 are all configured to have their rotations controlled by the control unit 32. The control unit 32 is configured to include, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU reads out a program corresponding to the processing content from the ROM and loads it into the RAM, and centrally controls the operation of each drive motor 31 in cooperation with the loaded program.

[0070] The control unit 32 is configured to control the drive motors 31 provided in the multiple traverse units 30 to rotate at the same rotation speed. Furthermore, the control unit 32 is configured to control the drive motors 31 adjacent to each other in the arrangement direction Y to rotate in opposite directions. That is, the drive motors 31 of the traverse units 30 adjacent to each other in the arrangement direction Y are configured to rotate at the same rotation speed in opposite directions based on the control of the control unit 32. For this reason, for example, when the drive motor 31 of one of the multiple traverse units 30 rotates in a clockwise direction as viewed from above, the drive motor 31 adjacent to the drive motor 31 in the arrangement direction Y rotates in a counterclockwise direction as viewed from above. The drive motors 31 adjacent to each other in the arrangement direction Y and rotating in a clockwise direction as viewed from above and the drive motors 31 rotating in a counterclockwise direction as viewed from above rotate at the same rotation speed.

[0071] In the traverse device 2, the drive motors 31 adjacent to each other in the arrangement direction Y rotate at the same rotation speed in opposite directions, so that the first drive force transmission shafts 22 adjacent to each other in the arrangement direction Y also rotate at the same rotation speed in opposite directions, as in the first embodiment. The interference avoidance cams 21 provided on the first drive force transmission shafts 22 also rotate in the same manner as in the first embodiment. That is, the first drive force transmission shafts 22 adjacent to each other in the arrangement direction Y also rotate at the same rotation speed in opposite directions. For this reason, for example, when the interference avoidance cam 21 of any one of the multiple traverse units 30 rotates in the clockwise direction as viewed from above, the interference avoidance cam 21 adjacent to that interference avoidance cam 21 in the arrangement direction Y rotates in the counterclockwise direction as viewed from above. The interference avoidance cams 21 that are adjacent to each other in the arrangement direction Y and rotate in the clockwise direction as viewed from above and the interference avoidance cams 21 that rotate in the counterclockwise direction as viewed from above rotate at the same rotational speed. In Fig. 9, the rotation direction of the interference avoidance cam 21 that rotates in the clockwise direction as viewed from above is indicated by arrow R1, and the rotation direction of the interference avoidance cam 21 that rotates in the counterclockwise direction as viewed from above is indicated by arrow R2.

[0072] Moreover, the interference avoidance cams 21 provided on each of the multiple traverse units 30 are configured to have the same configuration as the interference avoidance cams 21 provided on each of the multiple traverse units 13 in the first embodiment. That is, the interference avoidance cams 21 of the traverse units 30 are configured to rotate in opposite directions to each other with an angle difference set so that the adjacent interference avoidance cams 21 in the arrangement direction Y do not interfere with each other. For this reason, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y in the multiple traverse units 30 are configured to rotate together with the first driving force transmission shaft 22 without abutting each other in the arrangement direction Y when the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y are the same. Moreover, the interference avoidance cams 21 of the traverse units 30 are configured so that the rotation trajectories of the protrusions 21a of the adjacent interference avoidance cams 21 in the arrangement direction Y partially overlap each other. For this reason, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y in the multiple traverse units 30 are configured so that, when a difference occurs in the rotational speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y, the protrusions 21a of the interference avoidance cams 21 adjacent to each other in the arrangement direction Y come into contact with each other to regulate the difference in the rotational speeds of the first driving force transmission shafts 22. The interference avoidance cams 21 are configured so that the protrusions 21a come into contact with each other to regulate the difference in the rotational speeds of the first driving force transmission shafts 22, thereby avoiding interference between the rotary vanes (18, 19) adjacent to each other in the arrangement direction Y.

[0073] As described above, in the traverse device 2, when the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y are the same, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y do not come into contact with each other. Therefore, in the normal operating state of the traverse device 2, the interference avoidance cams 21 do not come into contact with each other. However, if the drive motor 31 in any of the multiple traverse units 30 fails, a difference in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y occurs. In this case, the interference avoidance cams 21 adjacent to each other in the arrangement direction Y come into contact with each other, and the difference in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y is regulated. Therefore, the difference in the rotation speeds of the rotary vanes 18 adjacent to each other in the arrangement direction Y is also regulated for the rotary vanes 18 to which the driving force is transmitted from the first driving force transmission shaft 22 via the second driving force transmission shaft 23. Similarly, for the rotary vanes 19 to which driving force is transmitted from the first driving force transmission shaft 22 via the third driving force transmission shaft 24, the difference in rotation speed between adjacent rotary vanes 19 in the arrangement direction Y is restricted. Therefore, interference between adjacent rotary vanes 18 in the arrangement direction Y is avoided, and interference between adjacent rotary vanes 19 in the arrangement direction Y is also avoided.

[0074] In the traverse device 2, the interference avoidance cam 21 is provided on the first driving force transmission shaft 22 in each traverse unit 30, but this is not essential. The interference avoidance cam 21 of the traverse unit 30 may be provided on the second driving force transmission shaft 23 or the third driving force transmission shaft 24, instead of the first driving force transmission shaft 22. When the interference avoidance cam 21 is provided on the second driving force transmission shaft 23, for example, the second driving force transmission shaft 23 is provided so as to penetrate the rotary vane 18 and protrude below the rotary vane 18. The interference avoidance cam 21 is attached to the lower end of the second driving force transmission shaft 23. When the interference avoidance cam 21 is provided on the third driving force transmission shaft 24, for example, the interference avoidance cam 21 is attached to the third driving force transmission shaft 24 between the lower end of the first driving force transmission shaft 22 and the upper surface of the rotary vane 19.

[0075] According to the above-described traverse device 2, the rotary vanes (18, 19) of each traverse unit 30 are rotationally driven by the drive motor 31 individually provided in each traverse unit 30 via the first to third drive force transmission shafts (22, 23, 24). Therefore, a gear mechanism for transmitting drive force between the multiple traverse units 30 is not required. As a result, a rattle problem does not occur as in a configuration in which a worm gear is used to transmit drive force between the multiple traverse units 30, and traverse control for traversing the yarn 101 by rotating the pair of rotary vanes (18, 19) in opposite directions to each other can be performed with high accuracy. Furthermore, since a rattle problem does not occur as in a configuration in which a worm gear is used to transmit drive force between the multiple traverse units 30, noise can be suppressed. The drive motors 31 of the multiple traverse units 30 are controlled by the control unit 32 to rotate at the same rotation speed, and the rotary vanes (18, 19) of the multiple traverse units 30 are maintained in a state of rotating synchronously. Furthermore, according to the above-described traverse device 2, in a normal operating state in which the rotation speeds of adjacent first driving force transmission shafts 22 in the arrangement direction Y of the multiple traverse units 30 are the same, the interference avoidance cams 21 provided on adjacent first driving force transmission shafts 22 do not come into contact with each other, so that the normal operating state in which the adjacent rotary vanes (18, 19) rotate synchronously is maintained. On the other hand, in the traverse device 2, if a failure occurs in the drive motor 31 of any of the multiple traverse units 30, a discrepancy will occur in the rotation speeds of adjacent first driving force transmission shafts 22 in the arrangement direction Y of the multiple traverse units 30. However, according to the above-mentioned traverse device 2, when a difference occurs in the rotation speeds of adjacent first driving force transmission shafts 22, the interference avoidance cams 21 provided on adjacent first driving force transmission shafts 22 come into contact with each other, restricting the difference in the rotation speeds of adjacent first driving force transmission shafts 22 and preventing interference between adjacent rotary vanes (18, 19). Therefore, according to the above-mentioned traverse device 2, it is possible to perform highly accurate traverse control and suppress noise, and further, it is possible to preferably prevent interference between adjacent rotary vanes (18, 19) in the direction in which the multiple traverse units 30 are arranged, and to prevent damage to the traverse device 2.

[0076] [Variations] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible within the scope of the claims. For example, the following modifications may be made.

[0077] (1) In the above embodiment, the traverse devices (1, 2) are provided in a yarn winder 100 that winds up a yarn spun from a spinning machine, but this is not necessarily the case. The traverse devices (1, 2) can be applied to any textile machine that has a mechanism for winding a yarn into a package, and therefore the traverse devices (1, 2) may be provided in textile machines other than the yarn winder 100. For example, the traverse devices (1, 2) may be provided in a false twisting machine.

[0078] (2) In the above embodiment, the interference avoidance cam 21 is provided in a disk shape, and a configuration of the interference avoidance cam 21 in which a plurality of protrusions 21a protruding radially along the radial direction are provided on the outer periphery of the disk-shaped interference avoidance cam 21 is described as an example, but this is not essential. The shape of the interference avoidance cam is not limited to the shape exemplified in the above embodiment, and may be changed. For example, the interference avoidance cam may be provided with a plurality of blades extending radially along the radial direction.

[0079] (3) The shape of the interference avoidance cam does not have to be the same in each of the multiple traverse units. For example, as shown in Figures 13 and 14, interference avoidance cams of different shapes may be provided alternately in the traverse units adjacent to each other in the arrangement direction Y.

[0080] FIG. 13 is a perspective view showing a traverse device 1A according to a modified example, and shows a part of the traverse device 1A. FIG. 14 is a plan view of the traverse device 1A, and shows a part of the traverse device 1A. The traverse device 1A according to the modified example shown in FIG. 13 and FIG. 14 is configured similarly to the traverse device 1 according to the first embodiment, but differs from the traverse device 1 according to the first embodiment in that the traverse units 13 adjacent to each other in the arrangement direction Y are provided with interference avoidance cams (33, 34) having different shapes alternately. In the description of the traverse device 1A according to the modified example, the same reference numerals are used in the drawings to omit redundant description of the same components as those in the first embodiment, or the same reference numerals are used to cite the same components, and only the form of the interference avoidance cams (33, 34) different from those in the first embodiment will be described.

[0081] 13 and 14, in the traverse device 1A, interference avoidance cams (33, 34) of different shapes are provided alternately in the traverse units 13 adjacent to each other in the arrangement direction Y. In the traverse device 1A, the traverse units 13 provided with the interference avoidance cams 33 and the traverse units 13 provided with the interference avoidance cams 34 having a shape different from that of the interference avoidance cams 33 are arranged alternately in the arrangement direction Y. That is, in the traverse device 1A, the interference avoidance cams 33 and the interference avoidance cams 34 having shapes different from each other are arranged alternately in the arrangement direction Y.

[0082] The interference avoidance cam 33 is provided in a disk shape, and a plurality of protrusions 33a protruding radially along the radial direction on the outer periphery of the disk-shaped interference avoidance cam 33 are arranged at equal angular intervals in the circumferential direction of the interference avoidance cam 33. Grooves curved and recessed in a U shape are provided between the protrusions 33a that are arranged at equal angular intervals in the circumferential direction on the outer periphery of the interference avoidance cam 33 and protrude in the radial direction. In other words, grooves curved and recessed in a U shape are provided between the protrusions 33a adjacent to each other in the circumferential direction on the outer periphery of the interference avoidance cam 33.

[0083] An interference avoidance cam 34 having a shape different from that of the interference avoidance cam 33 is provided in a traverse unit 13 adjacent in the arrangement direction Y to the traverse unit 13 provided with the interference avoidance cam 33. The interference avoidance cam 34 is provided in a disk shape, and a plurality of short cylindrical protrusions 34a protruding upward along the circumferential direction of the interference avoidance cam 34 are provided in an area near the edge of the outer periphery on the upper surface of the disk-shaped interference avoidance cam 34. The plurality of cylindrical protrusions 34a protruding upward near the edge of the outer periphery on the upper surface of the disk-shaped interference avoidance cam 34 are arranged at equal angular intervals in the circumferential direction on the upper surface of the interference avoidance cam 34.

[0084] In the traverse units 13 adjacent to each other in the arrangement direction Y, the interference avoidance cam 33 and the interference avoidance cam 34 are disposed adjacent to each other. The interference avoidance cam 33 and the interference avoidance cam 34 adjacent to each other in the arrangement direction Y are disposed closely to each other so that the rotation locus of the protrusion 33a of the interference avoidance cam 33 and the rotation locus of the convex portion 34a of the interference avoidance cam 34 partially overlap on a plane parallel to the horizontal plane. That is, the rotation locus of the protrusion 33a, which is the area through which the protrusion 33a of the interference avoidance cam 33 passes, and the rotation locus of the convex portion 34a, which is the area through which the convex portion 34a of the interference avoidance cam 34 adjacent to the interference avoidance cam 33 in the arrangement direction Y passes, are set to partially overlap each other. Since the rotation locus of the projection 33a of the interference avoidance cam 33 overlaps with the rotation locus of the projection 34a of the interference avoidance cam 34 adjacent to the interference avoidance cam 33 in the arrangement direction Y, the projection 34a of the interference avoidance cam 34 enters into the rotation locus of the projection 33a of the interference avoidance cam 33. Therefore, the interference avoidance cams 33 and 34 adjacent to each other in the arrangement direction Y are configured to rotate in opposite directions with an angle difference set so that the projection 33a and the projection 34a do not interfere with each other. When the projection 34a of the interference avoidance cam 34 enters into the rotation locus of the projection 33a of the interference avoidance cam 33, the projection 34a enters into the U-shaped groove between the projections 33a arranged in the circumferential direction of the interference avoidance cam 33 without interfering with the projection 33a.

[0085] As described above, the interference avoidance cams (33, 34) are configured to rotate in opposite directions to each other in a state where the interference avoidance cams 33 and 34 adjacent to each other in the arrangement direction Y are set to an angle difference such that they do not interfere with each other. For this reason, the interference avoidance cams 33 and 34 adjacent to each other in the arrangement direction Y in the multiple traverse units 13 are configured to rotate together with the first driving force transmission shaft 22 without coming into contact with each other when the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y are the same. In other words, the interference avoidance cams 33 and 34 adjacent to each other in the arrangement direction Y are configured to rotate together with the first driving force transmission shaft 22 without coming into contact with each other when the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y and rotating in opposite directions to each other are the same.

[0086] Further, the interference avoidance cams (33, 34) are configured such that the rotation trajectory of the projection 33a of the interference avoidance cam 33 partially overlaps with the rotation trajectory of the convex portion 34a of the interference avoidance cam 34 adjacent to the interference avoidance cam 33 in the arrangement direction Y. For this reason, the interference avoidance cams 33 and 34 adjacent to each other in the arrangement direction Y in the multiple traverse units 13 are configured such that, when a deviation occurs in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y, the projection 33a of the interference avoidance cam 33 comes into contact with the convex portion 34a of the interference avoidance cam 34 adjacent to the interference avoidance cam 33 in the arrangement direction Y, thereby restricting the deviation in the rotation speeds of the first driving force transmission shafts 22. The interference avoidance cams (33, 34) are configured so that the protrusion 33a of the interference avoidance cam 33 and the convex portion 34a of the interference avoidance cam 34 come into contact with each other to regulate the difference in rotation speed between the first driving force transmission shafts 22, thereby avoiding interference between the rotary vanes (18, 19) adjacent in the arrangement direction Y. In other words, when a difference in rotation speed occurs between the first driving force transmission shafts 22 adjacent in the arrangement direction Y, the interference avoidance cams (33, 34) are configured so that the protrusion 33a of the interference avoidance cam 33 comes into contact with the convex portion 34a of the interference avoidance cam 34 to regulate the difference in rotation speed between the first driving force transmission shafts 22, thereby avoiding interference between the rotary vanes 18 adjacent in the arrangement direction Y and avoiding interference between the rotary vanes 19 adjacent in the arrangement direction Y.

[0087] As described above, when the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y are the same, the interference avoidance cams 33 and 34 adjacent to each other in the arrangement direction Y do not come into contact with each other. Therefore, in the normal operating state of the traverse device 1A, the interference avoidance cams 33 and 34 do not come into contact with each other. However, when the toothed power transmission belt 12 is broken, a difference occurs in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y. In this case, the interference avoidance cams 33 and 34 adjacent to each other in the arrangement direction Y come into contact with each other, and the difference in the rotation speeds of the first driving force transmission shafts 22 adjacent to each other in the arrangement direction Y is restricted. Therefore, the difference in the rotation speeds of the rotary vanes 18 adjacent to each other in the arrangement direction Y is also restricted for the rotary vanes 18 to which the driving force is transmitted from the first driving force transmission shaft 22 via the second driving force transmission shaft 23. Similarly, for the rotary vanes 19 to which driving force is transmitted from the first driving force transmission shaft 22 via the third driving force transmission shaft 24, the difference in rotation speed between adjacent rotary vanes 19 in the arrangement direction Y is restricted. Therefore, interference between adjacent rotary vanes 18 in the arrangement direction Y is avoided, and interference between adjacent rotary vanes 19 in the arrangement direction Y is also avoided.

[0088] (4) In the above embodiment, the rotor blades (18, 19) are provided with three blades (18a, 19a) extending radially along the radial direction, but this is not necessarily the case. The number of blades extending radially along the radial direction in the rotor blade is not limited to three, and for example, the rotor blade may have two or four blades. [Explanation of symbols]

[0089] 1, 2 Traverse device 11 Drive motor 12 Toothed transmission belt 13, 30 Traverse unit 17 Traverse Guide 18, 19 Rotor blade 22 First driving force transmission shaft (driving force transmission shaft) 23 Second driving force transmission shaft (driving force transmission shaft) 24 Third driving force transmission shaft (driving force transmission shaft) 31 Drive motor 32 Control section 101 Thread

Claims

1. A traverse device including a plurality of traverse units that traverse a yarn to be wound into a package, the plurality of traverse units being arranged side by side, a drive motor; and a toothed transmission belt that is driven by the drive motor and transmits a synchronous driving force to the plurality of traverse units, Each of the plurality of traverse units includes A traverse guide that guides a traverse locus, which is a locus along which the yarn is reciprocated and traversed; A pair of rotary blades that rotate in opposite directions to each other to traverse the yarn along the traverse guide and transfer the yarn at both ends of the traverse path; a driving force transmission shaft that is driven by the driving force transmitted from the toothed transmission belt and that transmits the driving force to the rotor blades; an interference avoidance cam provided on the driving force transmission shaft to avoid interference between the rotor blades arranged adjacent to each other in an arrangement direction in which the plurality of traverse units are arranged; having The rotor blades that are adjacent to each other in the arrangement direction and rotate in opposite directions in the plurality of traverse units are arranged along the same plane, The interference avoidance cams adjacent to each other in the arrangement direction in the plurality of traverse units include When the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction are the same, the interference avoidance cams adjacent to each other in the arrangement direction rotate together with the driving force transmission shafts without coming into contact with each other, When a deviation occurs in the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction, the interference avoidance cams adjacent to each other in the arrangement direction come into contact with each other to regulate the deviation in the rotation speeds of the driving force transmission shafts and to avoid interference between the rotating blades adjacent to each other in the arrangement direction. A traverse device characterized by:

2. A traverse device including a plurality of traverse units that traverse a yarn to be wound into a package, the plurality of traverse units being arranged side by side, Each of the plurality of traverse units includes A traverse guide that guides a traverse locus, which is a locus along which the yarn is reciprocated and traversed; A pair of rotary blades that rotate in opposite directions to each other to traverse the yarn along the traverse guide and transfer the yarn at both ends of the traverse path; A drive motor; a driving force transmission shaft that is driven by the driving force transmitted from the driving motor and that transmits the driving force to the rotary blades; an interference avoidance cam provided on the driving force transmission shaft to avoid interference between the rotor blades arranged adjacent to each other in an arrangement direction in which the plurality of traverse units are arranged; having The rotor blades that are adjacent to each other in the arrangement direction and rotate in opposite directions in the plurality of traverse units are arranged along the same plane, The interference avoidance cams adjacent to each other in the arrangement direction in the plurality of traverse units include When the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction are the same, the interference avoidance cams adjacent to each other in the arrangement direction rotate together with the driving force transmission shafts without coming into contact with each other, When a deviation occurs in the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction, the interference avoidance cams adjacent to each other in the arrangement direction come into contact with each other to regulate the deviation in the rotation speeds of the driving force transmission shafts and avoid interference between the rotary vanes adjacent to each other in the arrangement direction, The control unit further includes a control unit that controls the drive motors provided in the plurality of traverse units to rotate at the same rotation speed. A traverse device characterized by:

3. the interference avoidance cam has a plurality of protrusions that protrude radially along a radial direction with the driving force transmission shaft as a center, When a deviation occurs in the rotation speeds of the driving force transmission shafts adjacent to each other in the arrangement direction, the protrusions of the interference avoidance cams adjacent to each other in the arrangement direction come into contact with each other to regulate the deviation in the rotation speeds of the driving force transmission shafts.

3. The traverse device according to claim 1 or 2.

4. The plurality of protrusions are provided along an outer periphery of the interference avoidance cam and are arranged at equal angular intervals in the circumferential direction of the interference avoidance cam.

4. The traverse device according to claim 3.

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