TW201816212A - Belt-type false-twisting device - Google Patents

Abstract

A variation in contact pressure is restrained and the tension of a yarn is suitably controlled in a belt-type false-twisting device. A belt-type false-twisting device is configured to false-twist a yarn Y by running a first belt 41 and a second belt 31 intersecting with each other while nipping the yarn Y by intersecting surfaces of the first belt 41 and the second belt 31, the belt-type false-twisting device including a mover 50 configured to move the first belt 41 relative to the second belt 31, the mover 50 including a feed screw mechanism 53 which includes a male screw part 55 extending in an axial direction and a female screw part 56 with which the male screw part 55 is screwed, and the first belt 41 being attached to be movable together with the male screw part 55, and the first belt 41 moving in the axial direction together with the male screw part 55 as the female screw part 56 rotates about an axis.

Description

Belt false twist device

[0001] The present invention relates to a belt type false twisting device that performs false twisting processing on a yarn by running the belt in a state where the yarn is sandwiched between two intersecting belts.

[0002] Conventionally, as disclosed in, for example, Patent Documents 1 to 3, there is known a belt-type false that performs false twisting on a yarn by running the belt in a state where the yarn is sandwiched between two intersecting belts. Twisting device. In such a belt-type false twisting device, by pressing one of the two belts against the other belt with a predetermined contact pressure, the yarn is held between the two belts. As a method of applying the contact pressure, Patent Documents 1 and 2 adopt an air type using air pressure, and Patent Document 3 adopts a method of applying a spring from a screw feed portion (hereinafter referred to as a “spring type” for convenience). [Prior Art Literature] [Patent Literature] [0003] [Patent Literature 1] Japanese Patent Laid-Open No. 2009-13524 [Patent Literature 2] Japanese Patent Laid-Open No. 6-228836 [Patent Literature 3] Japanese Patent Laid-Open No. 6-81234 Bulletin

[Problems to be Solved by the Invention] [0004] However, when the contact pressure application method is an air type or a spring type as described above, there is a problem that the belt easily moves due to vibration or external force, and the contact pressure easily changes. In addition, when performing false twisting, it is necessary to control the tension of the yarn within an appropriate range, but as described below, the air type or spring type is also disadvantageous from the viewpoint of controlling the tension. [0005] As a method of controlling the thread tension, there are a method of adjusting the contact pressure of the belt and a method of adjusting the traveling speed of the belt. In the method of adjusting the contact pressure of the belt, when the contact pressure method is air type or spring type, the response speed will change depending on whether the air pressure or the expansion and contraction amount of the spring is near the upper limit or lower limit or near the central value , It is difficult to perform constant control. In addition, in the method of adjusting the traveling speed of the belt, when the contact pressure application method is an air type or a spring type, when the traveling speed is increased, the thread is likely to slip, it is difficult to hold the thread, and it is difficult to perform proper control. [0006] In addition, in the case where the method of applying the contact pressure is an air type or a spring type, if the thread subjected to false twisting is thicker, the contact pressure tends to be weaker than the rigidity of the thread, and the above-mentioned problems are particularly easy Becomes obvious. [0007] The present invention has been accomplished in view of the above problems, and its object is to perform false twisting on a thread by passing the tape in a state in which the thread is sandwiched between two tapes that cross each other. , To suppress the fluctuation of contact pressure, at the same time, the tension of the thread can be appropriately controlled. [Means to solve the problem] [0008] The belt type false twisting device of the present invention uses the first belt and the second belt to intersect each other in a state where the thread is sandwiched between the first and second belts. A belt-type false twisting device that performs false twisting processing on the yarn by the second belt traveling is characterized by comprising a moving device that advances and retreats the first belt relative to the second belt, and the moving device includes a feed screw mechanism, which The feed screw mechanism includes an externally threaded member extending in the axial direction, and an internally threaded member screwed to the externally threaded member, and the first belt is integral with one of the externally threaded member and the internally threaded member It is attached in a movable manner, and the other of the male screw member and the female screw member rotates around the axis, and the first belt moves in the axial direction integrally with the one member. [0009] By attaching the first belt to the externally threaded member or the internally threaded member of the feed screw mechanism as integrally movable as in the present invention, it is possible to prevent the first belt from accidentally moving under the action of vibration or external force, It is possible to suppress fluctuations in contact pressure. In addition, when the tension control is performed by adjusting the contact pressure, since the first belt can be moved in proportion to the operation of the feed screw mechanism, the response speed can be maintained constant, and the tension control becomes easy. In addition, in the case of tension control using the traveling speed of the belt, since the position of the first belt can be fixed by using the feed screw mechanism, it is not easy to cause slippage of the thread, which is advantageous. In this way, according to the present invention, it is possible to appropriately control the tension of the thread while suppressing fluctuations in contact pressure. [0010] Furthermore, in the present invention, it is preferable that the first belt is attached so as to be movable integrally with the male screw member, and is rotated around the axis through the female screw member, and the first belt is integrally along with the male screw member The aforementioned axial movement. [0011] Since the diameter of the externally threaded member is smaller than that of the internally threaded member, by moving the externally threaded member, the space to be secured for moving the screw member can be narrowed, and the feed screw mechanism can be miniaturized. [0012] In the present invention, it is preferable that the feed screw mechanism is a ball screw mechanism in which a plurality of balls are provided between the male screw member and the female screw member. [0013] By adopting the ball screw mechanism as the feed screw mechanism, the torque required for the rotation drive can be reduced, and the mobile device can be miniaturized and the cost reduced. [0014] Furthermore, in the present invention, it is preferable that the male screw member extends in a direction orthogonal to the intersection of the second belt. [0015] In this way, since the moving direction of the first belt coincides with the direction orthogonal to the intersection of the second belt, it is possible to maintain the state where the intersection of the first belt and the intersection of the second belt are parallel Move the first band. Therefore, it does not cause excessive contact between the belts, which not only reduces the wear of the belts, but also reduces the power required to drive the belts. [0016] In addition, the present invention is particularly suitable when a false twisting process is performed on the aforementioned yarn having a thickness of 600 denier or more. [0017] When the thread is thicker than 600 denier, the first belt will be pushed back due to the rigidity of the thread, and there is a risk that the thread cannot be properly held. However, according to the structure of the present invention using the feed screw mechanism, it is possible to prevent the first belt from moving due to the rebound force from the yarn, and it is possible to appropriately perform false twist processing even in the case of a thick yarn.

[0019] Next, a preferred embodiment of the present invention will be described. [0020] As shown in FIG. 1, the false twisting machine 1 of the present embodiment applies false twist to the yarn Y traveling along the yarn path from the original creel holder 11 through the yarn processing section 12 to the winding section 13. Device. In the false twist processing machine 1, the original frame holder 11, the thread processing portion 12, and the take-up section 13 are arranged symmetrically in the left-right direction of FIG. 1 so that the original frame holder 11 side is outside. [0021] The original wire holder 11 includes a plurality of original wire holders 11a. The plurality of original yarn frames 11a respectively hold the yarn feeding package S. [0022] The yarn processing section 12 includes, in order from the upstream side of the yarn path, a primary feed roller 20, a primary heating device 21, a cooling device 23, a belt false twist device 24, a secondary feed roller 25, and a secondary heating device 26 and three feed rollers 27 and so on. A plurality of these devices constituting the thread processing section 12 are arranged in the vertical direction of the paper surface of FIG. 1 (hereinafter referred to as the “machine body longitudinal direction”), and the entire false twisting machine 1 is an elongated device along the machine body longitudinal direction. [0023] The primary feed roller 20 conveys the plurality of yarns Y supplied from the yarn feeding package S toward the primary heating device 21. The primary heating device 21 heats the plurality of filaments Y sent from the primary feed roller 20. In addition, a twist stop yarn guide 22 is arranged immediately upstream of the primary heating device 21. As will be described later, the twist stop yarn guide 22 is a member for preventing twisting from being transmitted to the upstream side of the twist stop yarn guide 22 when the yarn Y is twisted by the belt false twist device 24 . [0024] The cooling device 23 cools the plurality of filaments Y heated by the primary heating device 21. The belt-type false twisting device 24 performs false twisting on the yarn Y. At this time, the yarn Y is twisted between the twist stop yarn guide 22 and the belt false twist device 24, and untwisted between the belt false twist device 24 and the secondary feed roller 25. At this time, the yarn Y is twisted while being heated by the primary heating device 21, and is cooled by the cooling device 23 while being twisted, and is heat-set. Therefore, when the yarn Y is untwisted, it becomes a false twist state in which each single fiber becomes a wave-like form. The detailed structure of the belt false twist device 24 will be described in detail later. [0025] The secondary feed roller 25 conveys the yarn Y subjected to the false twisting process by the belt false twisting device 24 toward the secondary heating device 26. The feeding speed of the yarn Y by the secondary feed roller 25 is faster than the feeding speed of the yarn Y by the primary feed roller 20. The yarn Y is affected by the difference in the feeding speed caused by the primary feed roller 20 and the secondary feed roller 25. Stretch. In addition, the transfer speed of the yarn Y by the third feed roller 27 will be slower than the transfer speed of the yarn Y by the second feed roller 25, and the transfer speed of the yarn Y due to the second feed roller 25 and the third feed roller 27 Poor and slack. The secondary heating device 26 disposed between the secondary feed roller 25 and the tertiary feed roller 27 performs predetermined relaxation heat treatment on the yarn Y that has been drawn while being subjected to false twisting. [0026] The three-time feed roller 27 conveys the yarn Y subjected to the relaxation heat treatment toward the take-up section 13. Furthermore, the tertiary feed roller 27 is arranged at a distance from the secondary heating device 26 in the left-right direction in FIG. 1. In the space between the secondary heating device 26 and the tertiary feed roller 27, a table or work trolley (not shown) is provided, and the operator can perform work such as thread guarding on the table or work trolley. [0027] The winding unit 13 includes a plurality of winding devices 14. The plurality of winding devices 14 are arranged along the longitudinal direction of the machine body and the vertical direction. In the winding device 14, a wire axis is installed so that the axial direction is parallel to the longitudinal direction of the machine body. The winding device 14 winds the yarn Y sent from the tertiary feed roller 27 in the axial direction of the bobbin (longitudinal direction of the machine body) while winding it onto the bobbin, thereby forming the package P. [0028] Next, the structure of the belt false twist device 24 will be described in detail. FIG. 2 is a perspective view schematically showing the belt-type false twisting device 24, and FIG. 3 is a view of the belt-type false twisting device 24 viewed from an orthogonal direction described later. In addition, in FIG. 2, illustrations of the support members 35 and 45 and the moving device 50 described later are omitted. [0029] The belt-type false twisting device 24 includes a fixed belt unit 30 and a movable belt unit 40. The fixing belt unit 30 is fixed to a body (not shown). On the other hand, in order to allow the movable belt 41 of the movable belt unit 40 (corresponding to the “first belt” of the present invention) to move forward and backward relative to the fixed belt 31 of the fixed belt unit 30 (corresponding to the “second belt” of the present invention) The movable belt unit 40 is configured to be movable by a moving device 50 (refer to FIG. 3) described later. Then, the yarn Y sandwiched between the fixed belt 31 and the movable belt 41 in a mutually crossing state is subjected to false twisting. The belt-type false twisting device 24 of the present embodiment is a device that performs false twisting on a yarn Y having a relatively thick thickness of 600 denier or more. However, it is of course possible to perform false twisting on a yarn Y that is thinner than this. [0030] The fixed belt unit 30 includes a fixed belt 31, a driving pulley 32, a driven pulley 33, a motor 34, and a support member 35 (see FIG. 3). The fixed belt 31 is an endless belt made of a rubber material or the like, and is wound around the driving pulley 32 and the driven pulley 33. The motor 34 is connected to the driving pulley 32. When the driving motor 34 rotates the driving pulley 32, the fixed belt 31 travels, and at the same time, the driven pulley 33 rotates together. The driving pulley 32 and the driven pulley 33 are connected and supported by the support member 35. [0031] The movable belt unit 40 includes a movable belt 41, a driving pulley 42, a driven pulley 43, a motor 44, and a support member 45 (see FIG. 3). The movable belt 41 is an endless belt composed of a rubber material or the like, and is wound around the driving pulley 42 and the driven pulley 43. The motor 44 is connected to the driving pulley 42. When the driving motor 44 rotates the driving pulley 42, the movable belt 41 travels, and at the same time, the driven pulley 43 rotates together. The driving pulley 42 and the driven pulley 43 are connected and supported by the support member 45. [0032] In a state where the movable belt 41 is brought close to the fixed belt 31, the fixed belt 31 and the movable belt 41 cross each other on their respective crossing surfaces 31a, 41a. The thread Y is sandwiched between the cross surface 31a and the cross surface 41a. By rotating the driving pulleys 32 and 42 in the direction of the arrow shown in FIG. 2 in this state, the thread Y can be conveyed in the direction of the thread travel while Y twist. Hereinafter, the direction orthogonal to the intersection 31a of the fixing belt 31 is referred to as an orthogonal direction. [0033] The fixing belt unit 30 is attached to the machine body via the support member 35 and fixed to the machine body. On the other hand, the movable belt unit 40 is configured to be movable in the orthogonal direction by the moving device 50 attached to the support member 45. By moving the movable belt unit 40 in the orthogonal direction, it is possible to advance and retreat the crossing surface 41a relative to the crossing surface 31a while maintaining the crossing surface 41a of the movable belt 41 and the crossing surface 31a of the fixed belt 31 parallel. The details of the mobile device 50 will be described below. [0034] FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 3. In FIG. 4, the illustration of the fixed belt unit 30 is omitted, and only the movable belt unit 40 and the moving device 50 are illustrated. In addition, the vertical direction in FIG. 4 coincides with the orthogonal direction. [0035] The moving device 50 includes a fixed block 51 fixed to the body 60, a movable block 52 that can move in an orthogonal direction relative to the fixed block 51, and a feed screw mechanism disposed between the fixed block 51 and the movable block 52 53. A plurality of (may be one) guide members 54 extending in the orthogonal direction are attached to the fixed block 51, and are guided by the guide member 54 through the movable block 52, and the movable block 52 can move in the orthogonal direction. The movable block 52 is mounted on the support member 45 of the movable belt unit 40, and moves through the movable block 52 in the orthogonal direction, and the movable belt unit 40 moves in the orthogonal direction. [0036] The feed screw mechanism 53 includes an externally threaded member 55 extending in the axial direction, an internally threaded member 56 screwed to the externally threaded member 55, a stator coil 57 arranged radially outward of the internally threaded member 56, and a housing The screw member 56 and the case 58 of the stator coil 57. In this embodiment, the axial direction in which the male screw member 55 extends coincides with the orthogonal direction. In addition, the feed screw mechanism 53 of this embodiment is a ball screw mechanism in which a plurality of balls 59 are provided between the male screw member 55 and the female screw member 56. [0037] One end (lower end in FIG. 4) of the male screw member 55 is fixed to the movable block 52, and the other end becomes a free end. That is, the movable belt 41 is configured to be indirectly attached to the male screw member 55 via the support member 45 and the movable block 52, and can move integrally with the male screw member 55. In other words, there is no air-driven unit such as an air cylinder or a spring member between the movable belt 41 and the externally threaded member 55 that would prevent the movable belt 41 and the externally threaded member 55 from moving in one body. In addition, the female screw member 56 is screwed into the central portion of the male screw member 55 in the axial direction. A current is applied to the stator coil 57 according to an instruction from a control device (not shown). When current flows through the stator coil 57, the internally threaded member 56 made of a magnetic material receives electromagnetic action generated by the stator coil 57 and rotates around the axis of the externally threaded member 55. That is, the female screw member 56 functions as a rotor in the electric motor. [0038] The female screw member 56 is rotatably supported by a bearing (not shown) attached to the housing 58 in a state where movement in the orthogonal direction is restricted. Therefore, when the female screw member 56 rotates around the axis, the female screw member 56 will not move in the orthogonal direction, and the male screw member 55 will move in the orthogonal direction. At this time, the movable block 52 fixed to one end of the male screw member 55 moves in the orthogonal direction together with the male screw member 55, and the movable belt unit 40 moves in the orthogonal direction through this. [0039] According to the moving device 50 configured in this manner, by changing the direction of the current flowing in the stator coil 57, the movable belt unit 40 can be moved in two directions in the orthogonal direction. Therefore, the movable belt 41 can be moved away from the fixed belt 31 (see FIG. 4 (a)) and close to the fixed belt 31, and the thread Y can be sandwiched between the fixed belt 31 and the fixed belt 31 (see FIG. 4) (B) Move freely between. In addition, when the thread Y is sandwiched between the fixed belt 31 and the movable belt 41 located at a close position, the fixed belt 31 is in contact with the movable belt 41 when the thread Y is thin, but it may be possible when the thread Y is thick There are cases where the fixed belt 31 and the movable belt 41 are not in contact. [0040] However, in the belt type false twisting device 24, when the tension of the yarn Y is controlled in order to properly perform the false twisting process, it is only necessary to adjust the contact pressure of the belts 31 and 41 or adjust the travel of the belts 31 and 41 Speed is enough. [0041] Specifically, when the contact pressure of the belts 31 and 41 is adjusted, when the tension of the thread Y is too high, the movable belt 41 is moved toward the direction of pressing the fixed belt 31 (from the separated position) by using the moving device 50 Move closer to the location) to increase the contact pressure and reduce the tension. On the other hand, when the tension of the thread Y is too low, the movable device 41 moves the movable belt 41 in a direction away from the fixed belt 31 (from the approaching position toward the leaving position) to reduce the contact pressure, thereby increasing the tension. [0042] In the case of adjusting the traveling speed of the belts 31 and 41, when the tension of the yarn Y is too high, the traveling speed of the belts 31 and 41 can be increased by increasing the rotational speed of the motors 34 and 44 to reduce the tension. On the other hand, when the tension of the thread Y is too low, the traveling speed of the belts 31 and 41 is slowed by slowing down the rotation speed of the motors 34 and 44 to increase the tension. [Effects] In this embodiment, the movable belt 41 is mounted so as to be able to move integrally with the externally threaded member 55, and the internally threaded member 56 rotates around the axis, so that the movable belt 41 and the externally threaded member 55 are integrated along the axis To move. Therefore, when vibration or external force acts, it is possible to prevent the movable belt 41 from accidentally moving, and it is possible to suppress contact pressure fluctuations. Moreover, when the tension control of the yarn Y is performed by adjusting the contact pressure of the belts 31 and 41, the movable belt 41 can be moved in proportion to the operation of the feed screw mechanism 53 (the amount of movement of the male screw member 55) Therefore, the response speed can be kept constant, and it becomes easy to control the tension. In addition, in the case of performing tension control using the traveling speed of the belts 31 and 41, since the position of the movable belt 41 can be fixed by using the feed screw mechanism 53, it is not easy to cause slippage of the yarn Y, which is advantageous. Therefore, according to the belt-type false twisting device 24 of the present embodiment, it is possible to appropriately control the tension of the yarn Y while suppressing fluctuations in contact pressure. [0044] Furthermore, in the present embodiment, the movable belt 41 is mounted so as to move integrally with the male screw member 55, and the male screw member 55 moves in the axial direction by rotating around the shaft through the male screw member 55. Since the diameter of the externally threaded member 55 is smaller than that of the internally threaded member 56, by moving the externally threaded member 55, the space required to move the screw member can be narrowed, and the feed screw mechanism 53 can be miniaturized. [0045] In this embodiment, the feed screw mechanism 53 is a ball screw mechanism in which a plurality of balls 59 are provided between the male screw member 55 and the female screw member 56. Therefore, the torque required to rotationally drive the feed screw mechanism 53 can be reduced, and the mobile device 50 can be reduced in size and cost. [0046] In this embodiment, the male screw member 55 extends in a direction orthogonal to the intersection 31a of the fixing band 31. Therefore, the moving direction of the movable belt 41 coincides with the direction orthogonal to the intersection 31a of the fixed belt 31, so that the movable belt 41 can be made parallel while keeping the intersection 41a of the movable belt 41 and the intersection 31a of the fixed belt 31 parallel 41 moves. Therefore, without excessive contact between the belts 31 and 41, not only can the wear between the belts 31 and 41 be reduced, but also the power required to drive the belts 31 and 41 can be reduced. [0047] In addition, the belt type false twisting device 24 of the present embodiment is particularly suitable when false twisting is performed on the yarn Y having a thickness of 600 denier or more. When the thread Y is thicker than 600 denier, the movable belt 41 is pushed back due to the rigidity of the thread Y, and there is a risk that the thread Y cannot be properly held. However, if the feed screw mechanism 53 is used, the movable belt 41 can be prevented from moving due to the repulsive force from the yarn Y, and even in the case of the thick yarn Y, the false twist processing can be appropriately performed. [0048] (Other embodiments) The embodiments of the present invention have been described above, but the forms in which the present invention can be used are not limited to the above-mentioned embodiments, as illustrated by the following examples, within the scope not exceeding the gist of the present invention Apply appropriate changes. [0049] In the above embodiment, the movable belt 41 is mounted so as to be able to move integrally with the external thread member 55, and the internal thread member 56 rotates around the axis, so that the movable belt 41 and the external thread member 55 are integrated in the axial direction (orthogonal) Direction) to move. However, the movable belt 41 may be mounted so as to move integrally with the internally threaded member 56 and rotate around the axis through the externally threaded member 55, so that the movable belt 41 and the internally threaded member 56 integrally move in the axial direction to constitute the feed screw Agency 53. [0050] Furthermore, in the above embodiment, the movable belt 41 is indirectly mounted on the male screw member 55 via other members. However, the movable belt 41 may be directly attached to the male screw member 55 (or the female screw member 56). [0051] Furthermore, in the above-described embodiment, the movable belt 41 is moved in the orthogonal direction by the feed screw mechanism 53, and thus the intersection 41a of the movable belt 41 and the intersection 31a of the fixed belt 31 are maintained parallel. However, for example, the movable belt 41 may be configured to swing around the central axis of the driving pulley 42 as a fulcrum, and by moving the feed screw mechanism 53 to swing the movable belt 41, the movable belt 41 may advance and retreat relative to the fixed belt 31. However, if the movable belt 41 is set to such a swing type, when the movable belt 41 swings, the contact form (contact angle, etc.) of the movable belt 41 and the yarn Y will change according to the thickness of the yarn Y. In the case of being thick, there is a risk that the thread Y cannot be stably held by the cross surfaces 31a and 41a. In this regard, the method of moving the movable belt 41 while keeping the intersections 31a and 41a parallel as in the above embodiment is more advantageous for easily and stably holding the yarn Y regardless of the thickness of the yarn Y. [0052] In addition, in the above embodiment, the ball screw mechanism is adopted as the feed screw mechanism 53, but the feed screw mechanism 53 may be, for example, a sliding screw mechanism.

[0053]

1‧‧‧False twisting machine

11‧‧‧ original wire frame bracket

11a‧‧‧Original silk frame

12‧‧‧Wire Processing Department

13‧‧‧ Take-up department

14‧‧‧coiling device

20‧‧‧One feed roller

21‧‧‧ Primary heating device

22‧‧‧Twisting yarn guide

23‧‧‧cooling device

24‧‧‧belt false twist device

25‧‧‧Secondary feed roller

26‧‧‧Secondary heating device

27‧‧‧Three feed rollers

30‧‧‧Fix belt unit

31‧‧‧Fix belt (2nd belt)

31a‧‧‧Intersection

32‧‧‧Active pulley

33‧‧‧ driven pulley

34‧‧‧Motor

35‧‧‧Supporting member

40‧‧‧movable belt unit

41‧‧‧Movable belt (1st belt)

41a‧‧‧Intersection

42‧‧‧Active pulley

43‧‧‧ driven pulley

44‧‧‧Motor

45‧‧‧Supporting member

50‧‧‧Mobile device

51‧‧‧Fixed block

52‧‧‧movable block

53‧‧‧ Feed screw mechanism (ball screw mechanism)

54‧‧‧Guide components

55‧‧‧ External threaded member

56‧‧‧ Internal thread member

57‧‧‧ Stator coil

58‧‧‧Housing

59‧‧‧ball

60‧‧‧Body

P‧‧‧Roll

S‧‧‧Feed silk package

Y‧‧‧Thread

[0018] FIG. 1 is a schematic configuration diagram of a false twisting machine of this embodiment. FIG. 2 is a perspective view schematically showing a belt-type false twisting device. Figure 3 is a view of the belt-type false twisting device viewed from the orthogonal direction. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 3.

Claims (5)

A belt-type false twisting device is to perform false twisting processing on the yarn by running the first belt and the second belt in a state where the yarn is sandwiched by the crossing surfaces of the first belt and the second belt crossing each other The belt type false twisting device is characterized in that: is provided with a moving device for advancing and retreating the first belt relative to the second belt, and the moving device is provided with a feed screw mechanism having an external thread extending in the axial direction A member and an internally threaded member screwed to the externally threaded member, the first belt is attached so as to be integrally movable with one of the externally threaded member and the internally threaded member, through the externally threaded member and the foregoing The other of the internally threaded members rotates around the axis, and the first belt moves in the axial direction integrally with the one of the members. A belt-type false twisting device as claimed in item 1 of the patent application, wherein the first belt is mounted so as to move integrally with the external thread member, and rotates around the axis through the internal thread member, and the first belt and the external thread The member moves integrally in the aforementioned axial direction. The belt-type false twisting device according to claim 1 or 2, wherein the feed screw mechanism is a ball screw mechanism in which a plurality of balls are provided between the male screw member and the female screw member. The belt-type false twisting device according to any one of claims 1 to 3, wherein the male screw member extends in a direction orthogonal to the intersection of the second belt. The belt type false twisting device according to any one of claims 1 to 4, wherein the yarn having a thickness of 600 denier or more is subjected to false twisting.