CN108396421B

CN108396421B - False twist processing machine

Info

Publication number: CN108396421B
Application number: CN201810089881.7A
Authority: CN
Inventors: 桥本欣三; 堀本尭幸
Original assignee: TMT Machinery Inc
Current assignee: TMT Machinery Inc
Priority date: 2017-02-08
Filing date: 2018-01-30
Publication date: 2022-03-01
Anticipated expiration: 2038-01-30
Also published as: EP3360991B1; JP6914664B2; KR102256956B1; KR20180092272A; EP3360991A1; JP2018127731A; TW201829863A; TWI713816B; CN108396421A

Abstract

Problems occurring when a plurality of false twisting devices are driven by one driving source are eliminated. The false twisting machine (1) is provided with a plurality of false twisting devices (15) for false twisting different yarns (Y1) and a yarn (Y2) in opposite directions, and each of the plurality of false twisting devices is provided with: a rotating circular plate; a belt unit (32) which is arranged on one surface side of the circular plate and has a twisted belt (53) for clamping the yarn (Y1) between the circular plate and the belt unit; a belt unit (33) which is arranged on the other surface side of the circular plate and has a twisted belt (63) for clamping the yarn (Y2) between the circular plate and the belt unit; and a common motor (71) for driving the twisted belt (53) and the twisted belt (63), respectively. Compared with the case of driving a plurality of false twisting devices by a large motor in common, the size of each motor is reduced, and noise and vibration can be reduced. Further, since a power transmission member for commonly driving the plurality of false twisting devices is not required, the entire false twisting machine can be downsized, and the maintenance performance can be improved.

Description

False twist processing machine

Technical Field

The invention relates to a false twisting machine, which is provided with a plurality of false twisting devices for false twisting two advancing yarns in opposite directions.

Background

Patent document 1 discloses a so-called doubling false twist processing machine that doubles a false-twisted yarn having an S twist and a false-twisted yarn having an opposite Z twist. In particular, the false twisting device provided in the processing machine of patent document 1 is configured such that S-twist and Z-twist can be simultaneously applied to two yarns by one false twisting device. Specifically, the false twisting device includes a rotating disk member and two false twisting belt members disposed so as to sandwich the disk member. Each of the false twist belt members includes two pulleys (a drive pulley and a driven pulley) and a false twist belt wound around the two pulleys. On both sides of the rotating disk member, the false twist belts run in the same direction with respect to the disk member, whereby two yarns on both sides of the disk member are twisted in opposite directions (S twist and Z twist).

Further, in the processing machine, a plurality of processing spindles for doubling two yarns are arranged. In patent document 1, a single large motor provided in a processing machine is used to commonly drive a false twisting device provided in each of a plurality of processing spindles. In a specific configuration, one long drive belt for transmitting the power of the motor to each of the false twisting belt members of each of the false twisting devices is disposed so as to be capable of reciprocating from one end portion to the other end portion of the working machine in the arrangement direction of the plurality of false twisting devices. That is, the drive belt has an outbound portion and an inbound portion. Further, a pulley (connecting pulley) for transmitting the power of the motor to the drive pulley via the drive belt is connected to the drive pulley of each false twist belt member of each false twist device. In addition, the drive belt travels in the above-described aligning direction, and contacts one of the two coupling pulleys of each false twisting device at the forward portion and contacts the other at the return portion, thereby rotating the two coupling pulleys in opposite directions to each other.

Patent document 1: japanese laid-open patent publication No. 8-27637

The multiple false twisting devices described in patent document 1 are driven by a single large motor, and therefore various problems occur. For example, the motor has a large operating sound and vibration, which causes noise and the like. Further, since the plurality of false twisting devices are commonly driven, it is necessary to dispose a member for transmitting the power of the long drive belt, and there are also problems that the entire processing machine is increased in size and that maintenance such as removal of the drive belt and the false twisting belt is complicated.

Disclosure of Invention

The invention aims to eliminate the problem generated when a plurality of false twisting devices are driven by one driving source.

A false twist processing machine according to a first aspect of the present invention is a false twist processing machine including a plurality of false twisting devices for false twisting different first yarns and second yarns in mutually opposite directions, the false twisting devices each including: a rotating circular plate; a first tape unit arranged on one surface side of the disc and having a first twisted tape that sandwiches the first yarn with the disc; a second band unit arranged on the other surface side of the disc and having a second twisted band sandwiching a second yarn with the disc; and a common belt driving source for driving the first twisted belt and the second twisted belt, respectively.

In the present invention, each of the plurality of false twisting devices provided in the false twisting machine includes a common drive source for driving a first twisting belt for twisting the first yarn and a second twisting belt for twisting the second yarn. That is, the respective false twisting devices are driven independently by independent drive sources. In this case, compared to the case where a plurality of false twisting devices are driven in common by one motor, the size of each drive source is reduced, and noise and vibration emitted from each drive source are significantly reduced, so that noise and vibration can be reduced. Further, since it is not necessary to dispose a member for power transmission for commonly driving the plurality of false twisting devices, the entire false twisting machine can be downsized. Further, the mechanism for power transmission is compact, and therefore maintenance can be facilitated.

In the present invention, since the plurality of false twisting devices are each independently provided with the belt drive source, the plurality of false twisting devices can be independently controlled. For example, when a yarn breakage or the like occurs and it is necessary to stop any one of the plurality of false twisting devices, the false twisting device can be stopped by only stopping the belt driving source of the false twisting device.

A second aspect of the invention is the false twist texturing machine according to the first aspect, wherein the first belt unit includes: a first driving pulley and a first driven pulley around which the first twisted belt is wound; and a first connecting pulley connected to the first drive pulley, the second belt unit including: a second driving pulley and a second driven pulley around which a second twisted belt is wound; and a second connecting pulley connected to the second driving pulley, wherein a power transmission belt driven by the belt driving source is wound around the first connecting pulley and the second connecting pulley, and an inner surface of the power transmission belt is in contact with the first connecting pulley and an outer surface of the power transmission belt is in contact with the second connecting pulley.

In the present invention, in each of the plurality of false twisting devices, the inner surface of the power transmission belt is in contact with the first connecting pulley, and the outer surface thereof is in contact with the second connecting pulley. The power of the belt driving source is transmitted in mutually opposite directions to the first connecting pulley (and the first driving pulley) and the second connecting pulley (and the second driving pulley) via the power transmission belt. Thereby, the first twisted tape and the second twisted tape are driven, the first yarn is twisted by the first twisted tape and the round plate, and the second yarn is twisted in the opposite direction to the first yarn by the second twisted tape and the round plate. Thus, it is not necessary to use a long belt for commonly driving the plurality of false twisting devices, and the false twisting devices can be driven by the belt of a size accommodated in the false twisting devices.

A false twist texturing machine according to a third aspect of the present invention is the false twist texturing machine according to the second aspect of the present invention, wherein an auxiliary pulley is disposed at a position opposite to the first connecting pulley with the second connecting pulley interposed therebetween, the power transmission belt is wound around the first connecting pulley, the second connecting pulley, and the auxiliary pulley, and an inner surface of the power transmission belt is in contact with the auxiliary pulley.

In the present invention, the outer surface of the belt is in contact with the second connecting pulley, and the inner surface of the belt is in contact with the auxiliary pulley. That is, the belt is wound around these pulleys in an S-shape or Z-shape. Therefore, the winding angle of the belt with respect to the second connecting pulley can be increased, and the contact area between the belt and the second connecting pulley can be increased, so that the belt can be prevented from sliding with respect to the second connecting pulley.

A false twist processing machine according to a fourth aspect of the invention is the false twist processing machine according to the second or third aspect of the invention, wherein a plurality of first teeth aligned in a belt longitudinal direction are formed on an inner surface of the power transmission belt, a plurality of second teeth aligned in the belt longitudinal direction are formed on an outer surface of the power transmission belt, a plurality of first grooves that mesh with the plurality of first teeth on the inner surface of the power transmission belt are formed on an outer peripheral surface of the first connecting pulley, and a plurality of second grooves that mesh with the plurality of second teeth on the outer surface of the power transmission belt are formed on an outer peripheral surface of the second connecting pulley.

In the present invention, first teeth formed on the inner surface of the power transmission belt are engaged with first grooves formed on the first connecting pulley, and second teeth formed on the outer surface of the power transmission belt are engaged with second grooves formed on the second connecting pulley. Therefore, the power transmission belt is prevented from slipping with respect to the first and second connecting pulleys, and the power of the belt driving source is stably transmitted to the first twisted belt and the second twisted belt, so that the number of twists per unit length of the yarn is less likely to vary. This can suppress the degradation of the yarn quality. In addition, the quality of the yarn can be prevented from being deviated among the false twisting devices.

Drawings

FIG. 1 is a side view of a false twist processing machine according to the present embodiment.

FIG. 2 is a perspective view of a false twisting device.

FIG. 3 is a side view of the false twisting device.

FIG. 4 is a view showing a plurality of false twisting devices in FIG. 3 as viewed from the direction of an arrow IV.

Fig. 5 is an explanatory diagram showing the configuration of the driving unit and its periphery.

Fig. 6 is an explanatory diagram showing a drive unit and its peripheral configuration in a modification.

Fig. 7 is an explanatory diagram showing a drive unit and its peripheral configuration according to still another modification.

Description of the symbols

1 false twist processing machine

15 false twisting device

31 round plate

32 Belt Unit (first belt Unit)

33 Belt Unit (second belt Unit)

34 drive part

35 belt (Power transmission belt)

51 belt wheel (first driving belt wheel)

52 Belt wheel (first driven belt wheel)

53 twisting belt (first twisting belt)

55 belt wheel (first connecting belt wheel)

56 groove (first groove)

61 belt wheel (second driving belt wheel)

62 belt wheel (second driven belt wheel)

63 twisting belt (second twisting belt)

65 belt wheel (second connecting belt wheel)

66 groove (second groove)

67 belt wheel (auxiliary belt wheel)

71 Motor (with driving source)

75 teeth (first tooth)

76 teeth (second teeth)

Y yarn

Y1 yarn (first yarn)

Y2 yarn (second yarn)

Detailed Description

Next, an embodiment of the present invention will be described with reference to fig. 1 to 5. In fig. 1, a direction perpendicular to the paper surface is referred to as a machine body longitudinal direction, and a left-right direction of the paper surface is referred to as a machine body width direction. That is, a direction orthogonal to both the longitudinal direction and the width direction of the body is a vertical direction in which gravity acts. For convenience of explanation, the front side of the drawing sheet in fig. 1 is the front side in the machine longitudinal direction, and the back side of the drawing sheet is the back side in the machine longitudinal direction.

(integral constitution of false twist processing machine)

First, the overall structure of the false twist processing machine will be described with reference to fig. 1. Fig. 1 is a side view of a false twist processing machine 1 according to the present embodiment.

The false twist processing machine 1 of the present embodiment is configured to perform false twisting of S-twist on one yarn Y and false twisting of Z-twist on the other yarn Y for each of a plurality of yarns Y fed from a plurality of yarn feeding packages Q, and to combine the two yarns Y and wind the combined yarn into a plurality of packages P. As shown in fig. 1, the false twist texturing machine 1 includes: a yarn feeding section 2 for feeding a yarn Y; a processing part 3 for false twisting the yarn Y supplied from the yarn supply part 2; and a winding section 4 for winding the yarn Y false-twisted by the texturing section 3 to form a package P. Each of the yarn feeding unit 2, the processing unit 3, and the winding unit 4 has a plurality of structures (described in detail later) arranged in a machine longitudinal direction perpendicular to a running surface (paper surface in fig. 1) on which the yarn is arranged in a yarn path from the yarn feeding unit 2 to the winding unit 4 through the processing unit 3.

The yarn feeding section 2 has a creel 10 holding a plurality of yarn feeding packages Q, and feeds a plurality of yarns Y to the processing section 3. The processing section 3 is configured such that a first yarn feeding roller 11, a twist stop yarn guide 12, a first heating device 13, a cooling device 14, a false twisting device 15, a second yarn feeding roller 16, a doubling device 17, a third yarn feeding roller 18, a second heating device 19, and a fourth yarn feeding roller 20 are arranged in this order from the upstream side in the yarn traveling direction. The winding section 4 winds the yarn Y false-twisted by the processing section 3 by the winding device 21 to form a package P.

The false twist texturing machine 1 further includes a main body 5 and a take-up table 6 arranged at intervals in the body width direction. The main body 5 and the take-up table 6 extend substantially the same length in the longitudinal direction of the body and are disposed to face each other. The upper part of the main body 5 and the upper part of the winding table 6 are connected by a support frame 7. The devices constituting the processing section 3 are mainly mounted on the main body 5 and the support frame 7, and an operation space 8 is formed by the main body 5, the winding table 6, and the support frame 7. The yarn channel is formed such that the yarn Y mainly travels around the operating space 8.

The false twist texturing machine 1 has a unit cell called span (span) including 1 set of a main body 5 and a winding table 6 arranged to face each other. In one span, each device is configured to simultaneously perform false twisting on a plurality of yarns Y running in a state aligned in the longitudinal direction of the machine body. The false twist texturing machine 1 is configured such that the span is arranged symmetrically with respect to the center line C of the main body 5 in the machine width direction as a symmetry axis (the main body 5 is common to the left and right spans), and a plurality of the spans are arranged in the machine longitudinal direction.

(constitution of processing portion)

Next, the structure of the processing section 3 will be explained.

The first yarn feeding roller 11 is arranged above the winding table 6, and is used for feeding the yarn Y supplied from the yarn supplying section 2 to the first heating device 13. The first yarn feeding roller 11 is configured such that a plurality of driving rollers and driven rollers, not shown, provided independently of the plurality of yarns Y are arranged in 1 row in the longitudinal direction of the machine body.

The yarn stop guide 12 is arranged on the downstream side in the yarn advancing direction of the first yarn feeding roller 11 and on the upstream side in the yarn advancing direction of the first heating device 13, for preventing the twist imparted to the yarn Y by the false twisting device 15 described later from propagating further upstream in the yarn advancing direction of the yarn stop guide 12. The twist stop guides 12 are provided independently of the plurality of yarns Y supplied from the yarn supply section 2, and are arranged in 1 row in the machine longitudinal direction.

The first heating device 13 is for heating the yarn Y fed from the first yarn feeding roller 11, and is disposed on the support frame 7. The first heating device 13 extends obliquely downward toward the downstream side in the yarn running direction in the machine width direction. The yarn carrier 12, the cooling device 14, and the false twisting device 15 are arranged substantially along the extending direction of the first heating device 13. The first heating device 13 is provided in plurality for the plurality of yarns Y supplied from the yarn supplying section 2, and is arranged in 1 row in the machine longitudinal direction.

The cooling device 14 is for cooling the yarn Y heated by the first heating device 13, and is disposed on the downstream side of the first heating device 13 in the yarn running direction and on the upstream side of the false twisting device 15 in the yarn running direction. The cooling devices 14 are provided independently of the plurality of yarns Y supplied from the yarn supply unit 2, and are arranged in 1 row in the machine longitudinal direction.

The false twisting device 15 is a device for twisting two yarns Y out of the plurality of yarns Y, i.e., a yarn Y1 ("first yarn" in the present invention) and a yarn Y2 ("second yarn" in the present invention), in opposite directions (S-twisting one yarn Y and Z-twisting the other yarn Y), and is disposed above the main body 5. A plurality of false twisting devices 15 are arranged in the longitudinal direction of the machine body. Details of the false twisting device 15 will be described later.

The second yarn feeding roller 16 is for feeding the yarn Y treated by the false twisting device 15 to the doubling device 17, and is disposed below the false twisting device 15 in the main body 5. The second yarn feeding roller 16 is configured such that a plurality of driving rollers and driven rollers, not shown, provided independently of the plurality of yarns Y are arranged in 1 row in the longitudinal direction of the machine body. Further, the speed of the yarn Y carried by the second feed roller 16 is faster than the speed of the yarn Y carried by the first feed roller 11, and the yarn Y is stretched between the first feed roller 11 and the second feed roller 16.

The yarn doubling device 17 is for doubling the yarn Y1 with the yarn Y2, and is disposed below the second yarn feeding roller 16 in the main body 5. The yarn doubling device 17 performs yarn doubling by, for example, air-interlacing (inter-face) in which the filaments of the yarn Y1 and the yarn Y2 are interlaced with each other by air-jet air with respect to the yarn Y1 and the yarn Y2. One doubling device 17 is provided for each false twisting device 15.

The third yarn feeding roller 18 is for feeding the yarn Y doubled by the doubling device 17 to the second heating device 19, and is disposed below the doubling device 17 in the main body 5. The third yarn feeding roller 18 is configured such that a plurality of driving rollers and driven rollers, not shown, provided independently of the plurality of yarns Y which have been doubled by the doubling device 17 are arranged in 1 line in the longitudinal direction of the machine body. Further, the yarn Y is carried by the third feed roller 18 at a speed slower than that of the second feed roller 16, and the yarn Y is slackened between the second feed roller 16 and the third feed roller 18.

The second heating device 19 heats the yarn Y fed from the third yarn feeding roller 18, and is disposed below the third yarn feeding roller 18 in the main body 5. The second heating devices 19 extend in the vertical direction, and are provided one for each span.

The fourth yarn feeding roller 20 is for feeding the yarn Y heated by the second heating device 19 to the winding device 21, and is disposed below the winding table 6. The fourth yarn feeding roller 20 is configured such that a plurality of driving rollers and driven rollers, not shown, provided independently of the plurality of yarns Y heated by the second heating device 19 are arranged in 1 row in the longitudinal direction of the machine body. The yarn Y is carried by the fourth feed roller 20 at a slower speed than the third feed roller 18, and the yarn Y slackens between the third feed roller 18 and the fourth feed roller 20.

In the working section 3 configured as described above, the yarn Y stretched between the first yarn feeding roller 11 and the second yarn feeding roller 16 is twisted two by one false twisting device 15. The twist formed by the false twisting device 15 propagates to the yarn stop guide 12, but does not propagate to the upstream side of the yarn advancing direction of the yarn stop guide 12. The yarn Y twisted while being tensioned is heated and thermally fixed by the first heating device 13, and then cooled by the cooling device 14. The yarn Y is untwisted downstream of the false twisting device 15, but the filaments are false twisted into a wavy form by the thermal fixing. The two yarns Y (yarn Y1 and yarn Y2) which are false-twisted by the false twisting device 15, respectively by the S-twist and the Z-twist, are loosened between the second yarn feeding roller 16 and the third yarn feeding roller 18, and are doubled by the doubling device 17. The yarn Y after the doubling is slackened between the third yarn feeding roller 18 and the fourth yarn feeding roller 20, and is thermally fixed by the second heating device 19. Finally, the yarn Y fed from the fourth yarn feeding roller 20 is wound by the winding device 21 to form a package P.

(detailed construction of false twisting device)

Next, the detailed structure of the false twisting device 15 will be described with reference to fig. 2 to 5. FIG. 2 is a perspective view of the false twisting device 15. FIG. 3 is a side view of the false twisting device 15 as viewed from the longitudinal direction of the body. FIG. 4 is a view showing a plurality of false twisting devices 15 shown in FIG. 3, as viewed from the direction of an arrow IV. FIG. 5 is an explanatory view showing a configuration of a drive unit 34 described later and its periphery in the false twisting device 15.

The false twisting device 15 is for twisting two different yarns Y (yarn Y1 and yarn Y2) in opposite directions (S twist and Z twist are performed), and a plurality of them are arranged in the longitudinal direction of the machine body (see fig. 4). The plurality of false twisting devices 15 have the following configurations to twist the yarn Y1 and the yarn Y2 in opposite directions to each other. That is, as shown in FIG. 2, the false twisting device 15 mainly includes: a rotatable disk 31; a belt unit 32 ("first belt unit" of the present invention) disposed on the front side (the "one surface side" of the present invention) of the disk 31 in the machine length direction; a belt unit 33 ("second belt unit" of the present invention) disposed on the rear side (the "other surface side" of the present invention) of the disk 31 in the machine length direction, and a drive unit 34 for driving a twisted belt 53 ("first twisted belt" of the present invention) of a belt unit 32 and a twisted belt 63 ("second twisted belt" of the present invention) of the belt unit 33, which will be described later, respectively.

The disc 31 is disposed between the yarn Y1 and the yarn Y2 traveling in the false twisting device 15, and the yarn Y1 is disposed on the front side in the machine length direction of the disc 31 and the yarn Y2 is disposed on the rear side in the machine length direction (see fig. 3 and 4). A ring 42 is formed on the outer periphery of the disk 31. Ring portion 42 is a portion for twisting yarns Y1, Y2 together with twisted tape 53 and twisted tape 63, and is formed of a member having the same wear resistance as twisted tape 53 and twisted tape 63 or higher wear resistance. A ring surface 42a is formed on a surface of the ring portion 42 on the front side in the longitudinal direction of the body. The toroidal surface 42a is in contact with a portion of the outer surface of the twisted belt 53. A ring surface 42b is formed on the surface of the ring portion 42 on the back side in the longitudinal direction of the body. The ring face 42b is in contact with a portion of the outer surface of the twisted belt 63.

The disk 31 is attached to the extension shaft 41 along the longitudinal direction of the body. The shaft 41 extends in the longitudinal direction of the body over the plurality of false twisting devices 15, for example, and is connected to one motor (not shown) to attach the disk 31 provided to each of the plurality of false twisting devices 15. The disk 31 of each of the plurality of false twisting devices 15 is rotated about the shaft 41 by the rotation of the motor.

The tape unit 32 is arranged on the front side of the disc 31 in the machine longitudinal direction, and is configured to twist the yarn Y1 (in the present embodiment, Z twist) by sandwiching the yarn Y1 between the tape unit and the disc 31. The belt unit 32 has: a pulley 51 (a "first driving pulley" of the present invention) and a pulley 52 (a "first driven pulley" of the present invention; a twisted belt 53; a shaft 54 having one end fixed to the pulley 51, and a pulley 55 (a "first connecting pulley" of the present invention) fixed to the shaft 54.

The pulley 51 and the pulley 52 are each configured to be rotatable about a direction perpendicular to the longitudinal direction of the machine body as a rotation axis direction. The pulley 51 and the pulley 52 are arranged in the direction orthogonal to the rotation axis direction and the longitudinal direction of the body.

The twisted belt 53 is an endless belt, and is wound around the pulley 51 and the pulley 52. Yarn Y1 is interposed between the ring 42 of the circular plate 31 and the portion of the twisted belt 53 that is not in contact with the pulley 51 and the pulley 52 and is on the side close to the circular plate 31 in the machine length direction.

One end of the shaft 54 is fixed to the pulley 51 and extends in the rotation axis direction of the pulley 51. The shaft 54 extends obliquely upward toward the side closer to the operation space 8 (see fig. 1) in the machine width direction.

The pulley 55 is fixed to the other end of the shaft 54 and is coupled to the pulley 51 via the shaft 54. A plurality of grooves 56 ("first grooves" in the present invention) formed along the rotational axis direction of the pulley 55 are arranged on the outer peripheral surface of the pulley 55 at substantially equal intervals in the circumferential direction of the pulley 55 (see fig. 5).

The band unit 33 is arranged at a position facing the band unit 32 across the disc 31, that is, at the back side in the machine length direction of the disc 31, for sandwiching the yarn Y2 between the disc 31 and twisting the yarn Y2 in the direction opposite to the yarn Y1 (in the present embodiment, S twisting is performed). The configuration of the belt unit 33 is the same as that of the belt unit 32 described above. That is, the belt unit 33 has: a pulley 61 (a "second drive pulley" of the invention); a pulley 62 (a "second driven pulley" of the invention); a twisted belt 63 wound around the pulley 61 and the pulley 62; a shaft 64 having one end fixed to the pulley 61; and a pulley 65 (a "second connecting pulley" of the present invention) fixed to the other end portion of the shaft 64. Yarn Y2 is sandwiched between twisted tape 63 and loop 42. Further, on the outer peripheral surface of the pulley 65, a plurality of grooves 66 ("second grooves" in the present invention) formed along the rotation axis direction of the pulley 65 are arranged at substantially equal intervals in the circumferential direction of the pulley 65 (see fig. 5).

A pulley 67 ("auxiliary pulley" in the present invention) is rotatably provided at a position opposite to the pulley 55 with the pulley 65 therebetween in the machine body longitudinal direction (see fig. 5). A plurality of grooves 68 formed along the rotational axis direction of the pulley 67 are arranged at substantially equal intervals in the circumferential direction of the pulley 67 on the outer circumferential surface of the pulley 67 (see fig. 5).

The drive units 34 are used to drive the

twisted belts

53 and 63 in common, and the drive units 34 are provided independently of each other in each of the false twisting devices 15. As shown in fig. 3, the driving unit 34 is disposed above the disk 31, for example. The driving unit 34 includes a motor 71 (a "belt driving source" according to the present invention) as a power source, and a pulley 72 connected to a rotating shaft of the motor 71. The rotation shaft of the motor 71 extends obliquely upward toward the operation space 8 side. The pulley 72 is disposed obliquely above the motor 71. In other words, the motor 71 is disposed between the circular plate 31 and the pulley 72. A plurality of grooves 73 formed along the rotational axis direction of the pulley 72 are arranged at substantially equal intervals in the circumferential direction of the pulley 72 on the outer circumferential surface of the pulley 72 (see fig. 5).

As shown in fig. 5, a belt 35 (a "power transmission belt" according to the present invention) is wound around the

pulleys

55, 65, 67, and 72. The belt 35 is an endless belt for transmitting the power of the drive portion 34 to the pulley 55 and the pulley 65. The inner surface of the belt 35 is in contact with the

pulleys

55, 67, 72 and the outer surface of the belt 35 is in contact with the pulley 65. As shown in fig. 5, a plurality of teeth 75 ("first teeth" in the present invention) are arranged at substantially equal intervals in the longitudinal direction of the belt 35 on the inner surface of the belt 35, and a plurality of teeth 76 ("second teeth" in the present invention) are arranged at substantially equal intervals in the longitudinal direction of the belt 35 on the outer surface. The plurality of teeth 75 of the inner surface of the belt 35 mesh with the plurality of

grooves

56, 68, and 73 of the

pulleys

55, 67, 72, and the plurality of teeth 76 of the outer surface mesh with the plurality of grooves 66 of the pulley 65.

Next, the operation of the false twisting device 15 having the above-described configuration will be described. First, as shown in fig. 2, the disk 31 is rotated about the shaft 41 in the direction of the arrow (clockwise in fig. 2) by a motor (not shown).

Next, the operation of the

belt units

32 and 33 will be described with reference to fig. 2 and 5. As shown in fig. 5, when the rotational axis of the motor 71 of the driving portion 34 rotates in a predetermined direction (counterclockwise in fig. 5), the power of the motor 71 is transmitted to the pulley 55 of the belt unit 32, the pulley 65 of the belt unit 33, and the pulley 67 via the pulley 72 coupled to the motor 71 and the belt 35 wound around the pulley 72. Here, since the

pulleys

55, 67, and 72 are all in contact with the inner surface of the belt 35, they rotate in the same direction (counterclockwise in fig. 5). On the other hand, since the pulley 65 contacts the outer surface of the belt 35, the power of the motor 71 is transmitted in the opposite direction to the pulley 55 and the like. That is, the pulley 65 rotates in the direction opposite to the rotation direction of the pulley 55 and the like (clockwise in fig. 5). Here, the teeth 75 of the belt 35 mesh with the

grooves

56, 68, 73 of the

pulleys

55, 67, 72, and the teeth 76 mesh with the grooves 66 of the pulley 65, whereby the belt 35 can be prevented from slipping with respect to the pulley 55 and the like.

When the

pulleys

55, 65 rotate as described above, the

pulleys

51, 61 rotate integrally with the

pulleys

55, 65, respectively. As shown in fig. 3, since the pulley 55 and the pulley 65 rotate in opposite directions, the pulley 51 and the pulley 61 rotate in opposite directions. This transmits power to twisted belt 53 and twisted belt 63. Here, the portions of the

twisted belts

53 and 63 on the side close to the disc 31 travel in the same direction with respect to the disc 31. Further, since the

twisted belts

53, 63 are driven, the

pulleys

52, 62 are driven to rotate, respectively.

Thus, the yarn Y1 is sandwiched between the ring part 42 of the rotating disc 31 and the running twisted tape 53, and the yarn Y1 is Z-twisted. Further, yarn Y2 is sandwiched between loop 42 and twisted tape 63, and yarn Y2 is subjected to S-twist. That is, the yarn Y1 and the yarn Y2 are twisted in opposite directions to each other.

As described above, each of the plurality of false twisting devices 15 includes the motor 71 that drives the twisting belt 53 that twists the yarn Y1 and the twisting belt 63 that twists the yarn Y2. That is, the false twisting devices 15 are independently driven by the individual motors 71, respectively. In this case, compared to the case where a plurality of false twisting devices 15 are driven by one motor in common, the size of each motor 71 is reduced, and noise and vibration emitted from each motor 71 are significantly reduced, so that noise and vibration can be reduced. Further, since it is not necessary to dispose a power transmission member for commonly driving the plurality of false twisting devices 15, the entire false twisting machine 1 can be downsized. Further, the mechanism for power transmission is compact, and therefore maintenance can be facilitated.

Since the motors 71 are provided independently for the respective false twisting devices 15, the false twisting devices 15 can be controlled independently. For example, when a yarn breakage or the like occurs and it is necessary to stop any one of the false twisting devices 15, the false twisting device 15 is stopped only by stopping the motor 71 of the false twisting device 15. That is, even if there is no mechanism for separating the belt 35 from the

pulleys

55, 65, the respective false twisting devices 15 can be independently stopped, and therefore the structure of the false twisting device 15 can be simplified. Further, by making the traveling speeds of the

twisted belts

53 and 63 different between the false twisting devices 15 in accordance with the output of the motor 71, the speeds at which the yarns Y1 and Y2 are twisted can be made different between the false twisting devices 15. Thus, a plurality of types of yarns Y can be produced by the false twist processing machine 1.

Further, in each of the plurality of false twisting devices 15, the inner surface of the belt 35 is in contact with the pulley 55, and the outer surface is in contact with the pulley 65. Via this belt 35, the power of the motor 71 is transmitted to the pulley 55 (and the pulley 51) and the pulley 65 (and the pulley 62) in mutually opposite directions. As a result, twisted tape 53 and twisted tape 63 are driven, yarn Y1 is twisted by twisted tape 53 and circular plate 31, and yarn Y2 is twisted in the opposite direction to yarn Y1 by twisted tape 63 and circular plate 31. Thus, it is not necessary to use a long belt for commonly driving the plurality of false twisting devices 15, and the false twisting devices 15 can be driven by the large and small belts 35 housed in the false twisting devices 15.

Further, the pulley 65 is in contact with the outer surface of the belt 35, and the pulley 67 is in contact with the inner surface of the belt 35. That is, the belt 35 is wound in an S-shape or Z-shape with respect to these pulleys. Therefore, the winding angle of the belt 35 with respect to the pulley 65 can be increased, and the contact area between the belt 35 and the pulley 65 can be increased, so that the belt 35 can be prevented from slipping with respect to the pulley 65.

Further, teeth 75 formed on the belt 35 mesh with the grooves 56 of the pulley 55, and teeth 76 mesh with the grooves 66 of the pulley 65. Therefore, the belt 35 can be prevented from slipping with respect to the

pulleys

55, 65, and the power of the drive unit 34 can be stably transmitted to the twisted belt 53 and the twisted belt 63, so that the number of twists of the yarns Y1, Y2 per unit length is less likely to vary. This can suppress the degradation of the yarn quality. Further, the occurrence of variations in yarn quality among the plurality of false twisting devices 15 can be suppressed.

Next, a modification of the above embodiment will be described. Here, the same reference numerals are given to portions having the same configuration as in the above embodiment, and the description thereof will be appropriately omitted.

(1) In the above embodiment, the plurality of

teeth

75 and 76 are formed on the inner surface and the outer surface of the belt 35, respectively, and the plurality of

grooves

56, 66, 68, and 73 are formed on the outer circumferential surfaces of the

pulleys

55, 65, 67, and 72, respectively, but the present invention is not limited thereto. That is, as shown in fig. 6, in the false twisting device 81, grooves may not be formed on the peripheral surfaces of the pulley 55a of the belt unit 32a, the pulley 65a of the belt unit 33a, the pulley 67a as the auxiliary pulley, and the pulley 72a of the driving portion 34 a. In this case, for example, a belt 35a having no teeth, such as a flat belt, is wound around the

pulleys

55a, 65a, 67a, and 72 a.

(2) In the above embodiment, the pulley 67 is disposed at a position opposite to the pulley 55 with the pulley 65 interposed therebetween, but the present invention is not limited thereto. For example, as shown in fig. 7, in the false twisting device 82, the driving portion 34 may be disposed so that the position of the driving portion 34 in the machine length direction is opposite to the pulley 55 with the pulley 65 interposed therebetween, and the pulley 55 and the pulley 65 may be rotated in opposite directions to each other without providing the pulley 67.

(3) In the above-described embodiment, the power of the motor 71 is transmitted to the

belt units

32 and 33 via the pulleys and the belt, but the present invention is not limited thereto. For example, a gear or the like may be disposed, and the power of the motor 71 may be transmitted to the

belt units

32 and 33, so that the twisted belt 53 and the twisted belt 63 may travel in opposite directions to each other.

(4) In the above embodiment, the shaft 41 extends in the longitudinal direction of the body over the plurality of false twisting devices 15, but the shaft 41 may be provided independently of each other on each false twisting device 15, for example, and may be connected to a motor, not shown, provided independently of each other on each false twisting device 15.

(5) In the above-described embodiment, the motor 71 is disposed between the circular plate 31 and the pulley 72, but is not limited thereto. The motor 71 may be disposed on the opposite side of the disc 31 with the pulley 72 interposed therebetween, and the rotation shaft of the motor 71 may extend obliquely downward. Thus, for example, even when the motor 71 is large in size, the motor 71 can be disposed without affecting the size of the space between the disk 31 and the pulley 72.

(6) In the above embodiment, the first heating device 13 of the false twist texturing machine 1 is directed downward toward the downstream side in the yarn advancing direction in the machine width direction, but the present invention is not limited thereto. For example, the false twisting device 15 can be applied to various false twisting machines such as a machine body in which the first heating device is disposed substantially parallel to the machine body width direction (see japanese patent laid-open publication No. 2016-223034).

Claims

1. A false twisting machine comprising a plurality of false twisting devices for false twisting different first and second yarns in opposite directions,

the false twisting devices each include:

a rotating circular plate;

a first tape unit arranged on one surface side of the disc and having a first twisted tape that sandwiches the first yarn with the disc;

a second band unit arranged on the other surface side of the disc and having a second twisted band sandwiching a second yarn with the disc; and

a common belt driving source for driving the first twisted belt and the second twisted belt respectively,

the first belt unit includes: a first driving pulley and a first driven pulley around which the first twisted belt is wound; and a first connecting pulley connected to the first driving pulley,

the second belt unit includes: a second driving pulley and a second driven pulley around which a second twisted belt is wound; and a second connecting pulley connected to the second driving pulley,

the axial direction of the first connecting pulley and the axial direction of the second connecting pulley are parallel to each other,

the first connecting pulley and the second connecting pulley are disposed adjacent to each other in the axial direction of the circular plate,

a power transmission belt driven by the belt driving source is wound around the first coupling pulley and the second coupling pulley,

the inner surface of the power transmission belt is in contact with the first coupling pulley, and the outer surface of the power transmission belt is in contact with the second coupling pulley.

2. The false twist texturing machine of claim 1,

an auxiliary pulley is disposed at a position opposite to the first connecting pulley with the second connecting pulley interposed therebetween,

the power transmission belt is wound around the first connecting pulley, the second connecting pulley, and the auxiliary pulley,

the inner surface of the power transmission belt is in contact with the auxiliary pulley.

3. The false twist texturing machine of claim 1 or 2,

a plurality of first teeth arranged in the belt longitudinal direction are formed on the inner surface of the power transmission belt,

a plurality of second teeth arranged in the belt length direction are formed on the outer surface of the power transmission belt,

a plurality of first grooves that mesh with the plurality of first teeth of the inner surface of the power transmission belt are formed on the outer peripheral surface of the first connecting pulley,

a plurality of second grooves that mesh with the plurality of second teeth on the outer surface of the power transmission belt are formed on the outer peripheral surface of the second connecting pulley.