CN111088568B

CN111088568B - Traversing device, drafting device and spinning machine

Info

Publication number: CN111088568B
Application number: CN201910801488.0A
Authority: CN
Inventors: 中山昇
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2018-10-24
Filing date: 2019-08-28
Publication date: 2023-06-30
Anticipated expiration: 2039-08-28
Also published as: CN111088568A; DE102019215728A1; JP2020066820A

Abstract

The traverse device of the present invention includes a guide portion for guiding the belt and a drive portion for reciprocating the guide portion in the width direction of the belt. The driving section reciprocates only one guide section or only two guide sections as guide sections.

Description

Traversing device, drafting device and spinning machine

Technical Field

The present disclosure relates to a traverse device, a draft device, and a spinning machine.

Background

In a spinning machine provided with a plurality of spinning units, each spinning unit has a drafting section. Each drawing section includes a pair of belts for drawing the fiber bundle. The belt is easily worn out due to contact of the fiber bundles, and is a part to be replaced. In a spinning machine, a traverse device for changing a contact position of a fiber bundle with respect to a belt is sometimes used in order to extend a replacement cycle of the belt. The traverse device includes, for example: a plurality of guide portions for guiding the belt at the respective drafting portions; and a driving unit that reciprocates the plurality of guide units in the width direction of the belt (see, for example, japanese patent application laid-open publication No. 2011-032618).

In the spinning machine as described above, the belts of the respective drafting units may be driven together by a total shaft provided across the plurality of drafting units. In this case, in the traverse device, the plurality of guide portions are also driven together by the driving portion. However, in the case where the belt is driven for each drawing unit, the driving state of the belt can be changed for each drawing unit. Therefore, in a traverse device in which a plurality of guide portions are driven together by a driving portion, for example, the guide portion that reciprocates may apply an unnecessary load to the stopped belt.

Disclosure of Invention

The purpose of the present disclosure is to provide a traverse device, a drafting device, and a spinning machine that are suitable for driving a belt for each drafting unit.

The traverse device according to one embodiment of the present disclosure includes: a guide part for guiding the tangential belt; and a driving part that reciprocates the guide parts along the width direction of the belt, wherein the driving part reciprocates only one guide part or only two guide parts as the guide parts.

In this traverse device, even when the belt is driven for each of the plurality of drafting units in the spinning machine having the plurality of drafting units, the driving state of the guide unit can be matched with the driving state of the belt in one or two units. Thus, the traverse device is suitable for driving the belt for each drawing section.

In the traverse device according to one aspect of the present disclosure, the two guide portions may be a first guide portion and a second guide portion that guide the two belts as belts, respectively, the two belts may be a first belt and a second belt that are adjacent in the width direction of the belts, the first guide portion guides the first belt, the second guide portion guides the second belt, and the driving portion may reciprocate only the first guide portion and the second guide portion. This makes it possible to match the driving state of the guide portion with the driving state of the belt in two units.

In the traverse device according to one embodiment of the present disclosure, the driving unit may include a single driving motor that generates a driving force for reciprocating the first guide unit and the second guide unit. Thereby, cost reduction and space saving can be achieved.

The traverse device according to one embodiment of the present disclosure may further include at least one support portion that supports the first guide portion and the second guide portion, and the drive portion may further include a drive mechanism that reciprocates the at least one support portion by rotating the drive mechanism by a drive force generated by a single drive motor. Thus, the first guide portion and the second guide portion can be reciprocally moved by a simple structure.

In the traverse device according to one embodiment of the present disclosure, the drive unit may further include an attachment unit that supports the single drive motor and the drive mechanism. Thus, for example, when the traverse device is attached to or detached from the draft device, a single drive motor and drive mechanism can be handled as a single unit.

In the traverse device according to one embodiment of the present disclosure, the driving unit may further include a detecting unit that detects a rotation reference position of the driving mechanism, and the single driving motor may be a stepping motor. Thus, the rotational speed of the drive motor can be controlled based on the detected rotation reference position and the number of pulses input to the drive motor. As a result, the moving speeds of the first guide portion and the second guide portion (i.e., the traverse speeds of the first belt and the second belt) can be adjusted in accordance with the positions of the first guide portion and the second guide portion.

In the traverse device according to one embodiment of the present disclosure, at least one of the support portions may be a single support portion that supports the first guide portion and the second guide portion, and the drive mechanism may be rotated by a driving force generated by a single drive motor, thereby reciprocally moving the single support portion. Thus, the first guide portion and the second guide portion can be reciprocally moved by a simple structure.

In the traverse device according to one embodiment of the present disclosure, at least one of the support portions may be a first support portion that supports the first guide portion and a second support portion that supports the second guide portion, and the drive mechanism may be rotated by a driving force generated by a single drive motor, thereby selectively reciprocating at least one of the first support portion and the second support portion. Thus, the driving state of the first guide portion can be matched with the driving state of the first belt, and the driving state of the second guide portion can be matched with the driving state of the second belt.

In the traverse device according to one embodiment of the present disclosure, the driving unit may include a single driving motor that generates a driving force for reciprocating one guide unit, or two driving motors that generate driving forces for reciprocating the two guide units, respectively. This makes it possible to match the driving state of the guide portion with the driving state of the belt in one unit.

The draft device according to one embodiment of the present disclosure includes: the above-mentioned traversing device; a first drafting unit including a first belt and a first drafting roller for erecting the first belt; a second drafting section adjacent to the first drafting section in the width direction of the belt, and including a second belt and a second drafting roller for erecting the second belt; and a control unit that controls the operations of the traverse device, the first draft unit, and the second draft unit, wherein the control unit performs the following control: when the first drawing unit and the second drawing unit are used for drawing, the first guide unit and the second guide unit are reciprocated, when the first drawing unit is stopped and the second drawing unit is used for drawing, the first drawing roller and the first belt are stopped, and the first guide unit and the second guide unit are stopped, and when the first drawing unit is used for drawing and the second drawing unit is stopped, the second drawing roller and the second belt are stopped, and the first guide unit and the second guide unit are stopped.

In this draft device, when at least one of the draft by the first draft portion and the draft by the second draft portion is stopped, the first guide portion and the second guide portion are stopped. Thus, for example, the guide portion capable of preventing the reciprocating movement applies an unnecessary load to the stopped belt.

The draft device according to one embodiment of the present disclosure includes: the above-mentioned traversing device; a first drafting unit including a first belt and a first drafting roller for erecting the first belt; a second drafting section adjacent to the first drafting section in the width direction of the belt, and including a second belt and a second drafting roller for erecting the second belt; and a control unit that controls the operations of the traverse device, the first draft unit, and the second draft unit, wherein the control unit performs the following control: when the first drawing unit and the second drawing unit are used for drawing, the first guide unit and the second guide unit are reciprocated, when the first drawing unit is stopped and the second drawing unit is used for drawing, the first drawing roller and the first belt are rotated, and the first guide unit and the second guide unit are reciprocated, and when the first drawing unit is used for drawing and the second drawing unit is stopped, the second drawing roller and the second belt are rotated, and the first guide unit and the second guide unit are reciprocated.

In this draft device, even if at least one of the draft by the first draft portion and the draft by the second draft portion is stopped, the first draft roller and the first belt, and the second draft roller and the second belt continue to rotate, and the first guide portion and the second guide portion continue to reciprocate. Thus, unnecessary load on the belt can be prevented by simple control. The simple control means, for example, control for continuing the rotation of the first and second belts and the reciprocation of the first and second guide portions even in a state where the draft is stopped.

The draft device according to one embodiment of the present disclosure includes: the above-mentioned traversing device; a first drafting unit including a first belt and a first drafting roller for erecting the first belt; a second drafting section adjacent to the first drafting section in the width direction of the belt, and including a second belt and a second drafting roller for erecting the second belt; and a control unit that controls the operations of the traverse device, the first draft unit, and the second draft unit, wherein the control unit performs the following control: when the first drawing unit and the second drawing unit are used for drawing, the first guide unit and the second guide unit are reciprocated, when the first drawing unit is stopped and the second drawing unit is used for drawing, the first drawing roller and the first belt are stopped, the first guide unit is stopped, the second guide unit is reciprocated, and when the first drawing unit is used for drawing and the second drawing unit is stopped, the second drawing roller and the second belt are stopped, the first guide unit is reciprocated, and the second guide unit is stopped.

In this draft device, the driving state of the first guide portion can be matched with the driving state of the first belt, and the driving state of the second guide portion can be matched with the driving state of the second belt.

The draft device according to one embodiment of the present disclosure may further include a regulating portion engaged with the at least one support portion, the at least one support portion including a plate-like member formed with a long hole extending in the width direction of the belt, the regulating portion being disposed in the long hole so as to be movable in the width direction of the belt. This makes it possible to more accurately reciprocate the guide portion in the width direction of the belt.

The spinning machine according to one embodiment of the present disclosure includes: the above-mentioned draft device; a pair of air spinning devices for twisting the fiber bundles respectively drawn out by the first drawing part and the second drawing part to form two yarns; and a pair of winding devices for winding the yarns produced by the pair of air spinning devices to form two packages, wherein the drafting device is provided with a pair of prescribing parts, the prescribing parts prescribe the paths of the fiber bundles drafted by the first drafting part and the second drafting part, and the prescribing parts and the air spinning devices are fixed in the width direction of the tangential belt during the drafting performed by the first drafting part and the drafting performed by the second drafting part.

In this spinning machine, the pair of predetermined sections and the pair of air spinning devices can be fixed in the width direction of the belt, and the belt can be reciprocated. When the pair of predetermined units and the pair of air spinning devices are fixed in the width direction of the endless belt while the drafting by the first drafting unit and the drafting by the second drafting unit are performed, yarn paths of yarns respectively coming out of the pair of air spinning devices are stabilized. As a result, for example, the yarn coming out of the air spinning device can be reliably caught by the catching device when the spinning is restarted.

Drawings

Fig. 1 is a side view of a spinning machine according to a first embodiment.

Fig. 2 is a plan view of the draft device according to the first embodiment.

Fig. 3 is a side view of the first draft portion side of the draft device of the first embodiment.

Fig. 4 is a side view of the second drafting section side of the drafting device of the first embodiment.

Fig. 5 is a side view of the first drafting section side of the drafting device of the first embodiment in a state where the drafting cradle is arranged at the open position.

Fig. 6 is a front view of the traverse device of the first embodiment.

Fig. 7 is a rear view of the traversing device of the first embodiment.

Fig. 8 is a side view of a driving mechanism included in the traverse device of the first embodiment.

Fig. 9 is a front view of the traverse device of the second embodiment.

Fig. 10 is a rear view of the traversing device of the second embodiment.

Fig. 11 is a rear view of the traverse device of the second embodiment in a state where the cover is removed.

Fig. 12 is a schematic view of a driving mechanism for explaining an operation of the traverse device according to the second embodiment.

Detailed Description

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and repetitive description thereof will be omitted.

[ Structure of spinning machine of the first embodiment ]

As shown in fig. 1, the spinning machine 1 of the first embodiment includes a plurality of spinning units 2 and a plurality of unit controllers 100. The plurality of spinning units 2 are arranged in a row. Each spinning unit 2 generates a fiber bundle F by drawing a sliver (fiber bundle) S, generates a yarn Y by twisting the fiber bundle F with a whirling airflow, and winds the yarn Y around a bobbin B to form a package P. The unit controllers 100 are provided for each predetermined number (one or more) of the spinning units 2, and control the operation of each spinning unit 2. The spinning machine 1 is provided with a machine control device (not shown) as a host controller of the plurality of unit controllers 100.

Hereinafter, the upstream side in the traveling direction of the sliver S, the fiber bundle F, and the yarn Y is referred to as "upstream side", and the downstream side in the traveling direction is referred to as "downstream side". One side in the horizontal direction (for example, the working passage side) perpendicular to the arrangement direction of the plurality of spinning units 2 is referred to as "front side", and the other side in the horizontal direction is referred to as "rear side". The upper side in the plumb direction is referred to as "upper side", and the lower side in the plumb direction is referred to as "lower side".

Each spinning unit 2 includes a draft device 3, an air spinning device 4, a yarn monitoring device 5, a yarn storage device 6, a yarn splicing device 7, a winding device 8, a first catching guide device 9a, and a second catching guide device 9b. The draft device 3, the air spinning device 4, the yarn monitoring device 5, the yarn storage device 6, the yarn splicing device 7, and the winding device 8 are arranged in this order from the upstream side to the downstream side. As an example, the traveling direction of the sliver S, the fiber bundle F, and the yarn Y from the draft device 3 to the yarn storage device 6 is a direction from the front side toward the rear side, and is inclined upward with respect to the horizontal direction. The yarn Y from the yarn storage device 6 to the winding device 8 travels in a direction from the lower side toward the upper side, and is inclined toward the front side with respect to the plumb direction. In each spinning unit 2, the travelling direction of the yarn Y is switched at the yarn storage device 6.

The draft device 3 drafts the sliver S to generate a fiber bundle F. The air spinning device 4 twists the fiber bundle F drawn by the drawing device 3 by the whirling airflow to produce the yarn Y. The yarn storage device 6 stores the yarn Y in the yarn storage roller, and thereby the yarn Y is stably drawn out from the air spinning device 4 while absorbing the fluctuation of the tension generated in the yarn Y at the downstream side of the yarn storage device 6. The winding device 8 winds the yarn Y drawn out from the yarn storage device 6 around the bobbin B to form a package P. The winding device 8 has a cradle arm 81 and a winding drum 82. The bobbin B is rotatably supported by the rocker arm 81. The winding drum 82 contacts the bobbin B or the package P to rotate the bobbin B or the package P. A traverse groove (not shown) is formed in the surface of the winding drum 82, and is used to traverse the yarn Y when winding the yarn Y.

The yarn monitoring device 5 monitors information of the advancing yarn Y, and detects the presence or absence of a yarn defect based on the monitored information. When detecting a yarn defect, the yarn monitoring device 5 transmits a yarn defect detection signal to the unit controller 100. When receiving the yarn defect detection signal, the unit controller 100 stops the generation of the fiber bundle F by the draft device 3 and the generation of the yarn Y by the air spinning device 4 in order to cut the yarn Y, thereby interrupting the supply of the yarn Y. When receiving the yarn defect detection signal, the unit controller 100 may operate a cutter (not shown), for example, to cut the yarn Y. In this case, the yarn monitoring device 5 may have a cutter.

The yarn joining device 7 performs a yarn joining operation of connecting the yarn Y from the air spinning device 4 to the yarn Y from the package P when the yarn Y is cut or the yarn Y is broken for some reason. The yarn joining device 7 is a splicer device for twisting yarn ends to each other by a swirling air flow. The first catching guide 9a and the second catching guide 9b are rotatable about the base end portion, respectively. The first catching guide 9a is rotated downward before the yarn joining, thereby catching the yarn Y from the air spinning device 4 by the suction air flow, and then rotated upward, thereby guiding the yarn Y from the air spinning device 4 to the yarn joining device 7. The second catching guide 9b is rotated upward before the splicing is performed, thereby catching the yarn Y from the package P by the suction air flow, and then rotated downward, thereby guiding the yarn Y from the package P to the splicing device 7.

[ Structure of draft device of first embodiment ]

As shown in fig. 2, 3 and 4, the draft device 3 of the first embodiment includes a first draft portion 40, a second draft portion 50, and a traverse device 10A. In fig. 3 and 4, the draft device 3 is shown in a state where the traveling directions of the sliver S and the fiber bundle F are parallel to the horizontal direction, but the traveling directions of the sliver S and the fiber bundle F in the draft device 3 are actually inclined upward with respect to the horizontal direction. The inclination angle may be 45 degrees or more (for example, about 65 degrees) with respect to the horizontal direction.

In one of the pair of adjacent spinning units 2, the first draft portion 40 drafts the sliver S to generate the fiber bundle F. The first drafting section 40 includes a rear roller pair 41, a third roller pair 42, a middle roller pair 43, a front roller pair 44, and a pair of

belts

45a and 45b. The rear roller pair 41, the third roller pair 42, the middle roller pair 43, and the front roller pair 44 are arranged in this order from the upstream side to the downstream side.

The rear roller pair 41 is composed of a rear bottom roller 41a and a rear top roller 41 b. The third roller pair 42 is constituted by a third bottom roller 42a and a third top roller 42 b. The middle roller pair 43 is composed of a middle bottom roller 43a and a middle top roller 43 b. The front roller 44 is composed of a front bottom roller 44a and a front top roller 44 b.

A tensioner 46a is disposed between the middle bottom roller 43a and the front bottom roller 44 a. The belt (first belt) 45a is stretched between the intermediate bottom roller (first draft roller) 43a and the tensioner 46a. A tensioner 46b is disposed between the middle top roller 43b and the front top roller 44 b. The belt 45b is stretched between the middle top roller 43b and the tensioner 46b.

In the other of the pair of adjacent spinning units 2, the second drafting unit 50 drafts the sliver S to generate the fiber bundle F. The second drafting unit 50 includes a rear roller pair 51, a third roller pair 52, a middle roller pair 53, a front roller pair 54, and a pair of

belts

55a and 55b. The rear roller pair 51, the third roller pair 52, the middle roller pair 53, and the front roller pair 54 are arranged in this order from the upstream side to the downstream side.

The rear roller pair 51 is composed of a rear bottom roller 51a and a rear top roller 51 b. The third roller pair 52 is composed of a third bottom roller 52a and a third top roller 52 b. The middle roller pair 53 is composed of a middle bottom roller 53a and a middle top roller 53 b. The front roller 54 is composed of a front bottom roller 54a and a front top roller 54 b.

A tensioner 56a is disposed between the middle bottom roller 53a and the front bottom roller 54 a. The belt (second belt) 55a is stretched between the intermediate bottom roller (second draft roller) 53a and the tensioner 56a. A tensioner 56b is disposed between the middle top roller 53b and the front top roller 54 b. The belt 55b is stretched between the middle top roller 53b and the tensioner 56b.

The

bottom rollers

41a, 42a, 43a, 44a of the first draft portion 40 and the

bottom rollers

51a, 52a, 53a, 54a of the second draft portion 50 are rotatably supported by the base 31. The

tensioners

46a and 56a of the first and

second drafting portions

40 and 50 are mounted to the base 31. The base 31 is attached to, for example, a unit frame of the spinning unit 2, or a main body frame or suction duct of the spinning machine 1.

The

top rollers

41b, 42b, 43b, 44b of the first draft portion 40 and the

top rollers

51b, 52b, 53b, 54b of the second draft portion 50 are rotatably supported by the draft cradle 32. The

tensioners

46b and 56b of the first and

second drafting portions

40 and 50 are mounted to the drafting cradle 32.

A rotation shaft 33 is provided at the downstream end of the base 31. The downstream end of the draft cradle 32 is rotatably mounted on a rotation shaft 33. The drafting cradle 32 is rotatable relative to the base 31 between a closed position and an open position. The turning operation of the draft cradle 32 is performed by an operator operating a handle 34 provided at an upstream end of the draft cradle 32.

The closed position of the draft cradle 32 is a position where the

top rollers

41b, 42b, 44b and the belt 45b of the first draft portion 40 contact the

bottom rollers

41a, 42a, 44a and the belt 45a of the first draft portion 40. In this position, the

top rollers

51b, 52b, 54b and the belt 55b of the second drafting unit 50 are also in contact with the

bottom rollers

51a, 52a, 54a and the belt 55a of the second drafting unit 50. The draft of the sliver S by the first draft portion 40 and the draft of the sliver S by the second draft portion 50 are performed in a state where the draft cradle 32 is disposed at the closed position.

As shown in fig. 5, the open position of the draft cradle 32 is a position where the

top rollers

41b, 42b, 44b and the belt 45b of the first draft portion 40 are away from the

bottom rollers

top rollers

51b, 52b, 54b and the belt 55b of the second drafting unit 50 are also far from the

bottom rollers

51a, 52a, 54a and the belt 55a of the second drafting unit 50. In a state where the draft cradle 32 is disposed at the open position, maintenance or the like of the first draft portion 40 and the second draft portion 50 is performed.

As shown in fig. 2, 3 and 4, in the first drawing section 40, the

bottom rollers

41a, 42a, 43a, 44a are rotated at mutually different rotational speeds so as to be directed toward the downstream side by respective drive motors (not shown). In the first drafting section 40, the

top rollers

41b, 42b, 44b and the belt 45b are driven to rotate by the

bottom rollers

41a, 42a, 44a and the belt 45 a.

In the second drafting unit 50, the

bottom rollers

51a, 52a, 53a, 54a are rotated at mutually different rotation speeds by respective drive motors (not shown) so as to be directed toward the downstream side. In the second drafting section 50, the

top rollers

51b, 52b, 54b and the belt 55b are driven to rotate by the

bottom rollers

51a, 52a, 54a and the belt 55 a.

The first drawing unit 40 and the second drawing unit 50 are each provided with a defining unit 35, and the defining unit 35 defines a path of the drawn sliver S. Each of the predetermined portions 35 has a through hole through which the sliver S passes. The predetermined portion 35 of the first draft portion 40 is disposed between the third roller pair 42 and the middle roller pair 43, and is attached to the base 31. The predetermined portion 35 of the second drafting unit 50 is arranged between the third roller pair 52 and the middle roller pair 53, and is attached to the base 31. A pair of predetermined portions 35 provided in the first and

second drafting portions

40 and 50 and a pair of air spinning devices 4 (see fig. 1) corresponding to the first and

second drafting portions

40 and 50 are fixed in the width direction of the

belts

45a, 45b, 55a, 55 b.

The drawing device 3 is provided with a suction device 60. The suction device 60 includes first and

second brackets

61 and 62, first and

second suction nozzles

63 and 64, a converging pipe 65, and first and

second branch pipes

67 and 68. The first bracket 61 and the second bracket 62 are mounted to the draft cradle 32.

The first suction nozzle 63 is swingably supported by the first bracket 61. The first suction nozzle 63 is swingable between a close position and a distant position with respect to the front top roller 44b of the first draft portion 40. The approaching position of the first suction nozzle 63 is a position where the suction port 63a of the first suction nozzle 63 approaches the front top roller 44 b. The position of the first suction nozzle 63 away from the front top roller 44b is a position of the suction port 63a of the first suction nozzle 63 away from the front top roller. The first suction nozzle 63 swinging from the distant position to the close position is in contact with a stopper 61a provided to the first carriage 61. Thereby, the suction port 63a of the first suction nozzle 63 disposed at the approaching position is positioned with respect to the front top roller 44 b.

The second suction nozzle 64 is swingably supported by the second bracket 62. The second suction nozzle 64 is swingable between a close position and a distant position with respect to the front top roller 54b of the second drafting unit 50. The approaching position of the second suction nozzle 64 is a position where the suction port 64a of the second suction nozzle 64 approaches the front top roller 54 b. The position of the second suction nozzle 64 away from the front top roller 54b is the position of the suction port 64a of the second suction nozzle 64 away from the front top roller. The second suction nozzle 64 swinging from the distant position to the close position is in contact with a stopper 62a provided to the second carriage 62. Thereby, the suction port 64a of the second suction nozzle 64 disposed at the approaching position is positioned with respect to the front top roller 54 b.

The first end 65a of the draft tube 65 is provided at the downstream end of the draft cradle 32. The second end 65b of the shunt tube 65 is provided at the downstream end of the base 31. The intermediate portion 65c of the shunt tube 65 is connected to the first end portion 65a and the second end portion 65b, and is constituted by a bellows. The second end 65b of the flow joining pipe 65 is connected to a suction gas flow source (not shown) via a pipe (not shown).

One end of the first branch pipe 67 is connected to a first end 65a of the converging pipe 65, and the other end of the first branch pipe 67 is connected to a base end 63b of the first suction nozzle 63. The intermediate portion (portion between both end portions) of the first branch pipe 67 is constituted by a bellows. One end of the second branch pipe 68 is connected to the first end 65a of the converging pipe 65, and the other end of the second branch pipe 68 is connected to the base end 64b of the second suction nozzle 64. The intermediate portion (portion between the both end portions) of the second branch pipe 68 is constituted by a bellows.

The draft of the sliver S by the first draft portion 40 is performed in a state where the first suction nozzle 63 is disposed at the approaching position. Thereby, the fiber sheet wound up by the front top roller 44b of the first draft portion 40 is sucked from the suction port 63a of the first suction nozzle 63. The sliver S is drawn by the second drawing unit 50 in a state where the second suction nozzle 64 is disposed at the approaching position. Thereby, the fiber sheet wound up by the front top roller 54b of the second drafting part 50 is sucked from the suction port 64a of the second suction nozzle 64.

The first suction nozzle 63 is disposed at a remote position when an operator checks whether or not the fiber sheet is wound around the front top roller 44b of the first draft portion 40, when the operator removes the fiber sheet wound around the front top roller 44b, when the operator sucks the fiber sheet removed from a place to the first suction nozzle 63, and when the operator removes the front top roller 44 b. The second suction nozzle 64 is disposed at a remote position when the operator checks whether or not the fiber sheet is wound around the front top roller 54b of the second drafting unit 50, when the operator removes the fiber sheet wound around the front top roller 54b, when the operator sucks the fiber sheet removed from a place to the second suction nozzle 64, and when the operator removes the front top roller 54 b.

[ Structure of the traversing device of the first embodiment ]

As shown in fig. 6 and 7, the traverse device 10A according to the first embodiment includes the first guide 11, the second guide 12, the support 19, and the driving unit 15. The traverse device 10A reciprocates the belt 45a (see fig. 3) stretched over the intermediate bottom roller 43a and the belt 55a (see fig. 4) stretched over the intermediate bottom roller 53a along the width direction a of the

belts

45a and 55a. That is, the traverse device 10A is provided for the first and

second drafting units

40, 50 adjacent to each other in the width direction a, and the traverse device 10A reciprocates the

belts

45a, 55a adjacent to each other in the width direction a along the width direction a. Hereinafter, the intermediate bottom roller 43a and the belt 45a are referred to as a first draft roller 43a and a first belt 45a, respectively, and the intermediate bottom roller 53a and the belt 55a are referred to as a second draft roller 53a and a second belt 55a, respectively. Further, the

tapes

45a, 55a adjacent in the width direction a mean tapes adjacent in the width direction a (hereinafter, the same applies) focusing on only the tapes. That is, in the width direction a, if no other belt (even if a member other than the belt is disposed) is disposed between the

belts

45a and 55a, the

belts

45a and 55a in this case are

belts

45a and 55a adjacent to each other in the width direction a.

The first guide 11 has a notch 11a that opens upward. The first guide 11 guides the first belt 45a by disposing the lower portion of the first belt 45a in the cutout 11a. The lower portion of the first belt 45a is a portion of the first belt 45a that runs under the first draft roller 43a and the tensioner 46 a.

A cutout 12a that opens upward is formed in the second guide portion 12. The second guide 12 guides the second belt 55a by disposing a lower portion of the second belt 55a in the slit 12a. The lower portion of the second belt 55a is a portion of the second belt 55a that runs under the second draft roller 53a and the tensioner 56 a.

The support portion 19 is a plate-like member that supports the first guide portion 11 and the second guide portion 12. A pair of regulating portions 36 are engaged with the support portion 19, and the pair of regulating portions 36 are provided on the base 31 of the draft device 3 (see fig. 2, 3, and 4). Specifically, a pair of

long holes

19a, 19b extending in the width direction a are formed in the support portion 19. One restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 19a so as to be movable in the width direction a. The other restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 19b in a movable state along the width direction a. A fastener 37 is removably attached to each of the restricting portions 36, and the fastener 37 includes, for example, a washer and a bolt. This prevents the support portion 19 from coming off the pair of restricting portions 36.

The driving section 15 reciprocates only the first guide section 11 and the second guide section 12 in the width direction a. The driving portion 15 does not reciprocate the adjacent other first guide portion and second guide portion. The driving unit 15 includes a driving motor 16, a driving mechanism 20, a mounting unit 17, and a detecting unit 18. The drive motor 16 is a stepping motor that generates a driving force for reciprocating the first guide portion 11 and the second guide portion 12. The driving mechanism 20 rotates by the driving force generated by the single driving motor 16, and thereby reciprocates the single support portion 19. The mounting portion 17 supports the drive motor 16 and the drive mechanism 20. The mounting portion 17 is detachably mounted to a base 31 of the draft device 3 by, for example, bolts or the like (see fig. 2, 3, and 4). The detection unit 18 detects a rotation reference position of the drive mechanism 20. The rotation reference position is, for example, a position of the driving mechanism 20 when the center portion of the first belt 45a in the width direction a is located at the middle point of the width of the reciprocation of the first belt 45a and the center portion of the second belt 55a in the width direction a is located at the middle point of the width of the reciprocation of the second belt 55 a.

As shown in fig. 8, the driving mechanism 20 includes a circular plate 21, a rotary shaft 22, and an eccentric pin 23. The rotation shaft 22 is provided on the front side of the circular plate 21, and the eccentric pin 23 is provided on the rear side of the circular plate 21. The center line of the rotation shaft 22 coincides with the center line of the circular plate 21, and the center line of the eccentric pin 23 does not coincide with the center line of the circular plate 21. That is, the center line of the eccentric pin 23 is offset from the center line of the rotary shaft 22.

As shown in fig. 6 and 7, a magnet 24 is provided at the outer edge of the disk 21 of the drive mechanism 20. The detection unit 18 is attached to the bracket 17a and faces the outer edge of the disk 21, and the bracket 17a is fixed to the attachment unit 17. The detection unit 18 is a magnetic sensor, and detects the rotation reference position of the drive mechanism 20 by detecting the magnet 24.

The rotation shaft 22 of the drive mechanism 20 is rotatably supported by the mounting portion 17. The rotation shaft 22 is connected to a rotation shaft (not shown) of the drive motor 16 via a power transmission member (not shown) including a belt and a pulley, for example. The support portion 19 has a long hole 19c extending in the vertical direction. The eccentric pin 23 of the driving mechanism 20 is disposed in the long hole 19c so as to be movable in the up-down direction (longitudinal direction of the long hole 19 c). A fastener (japanese: retaining tool) 25 including a washer and a snap ring, for example, is removably attached to the eccentric pin 23. Thereby, the support portion 19 is prevented from falling off from the eccentric pin 23.

In the traverse device 10A, when the driving mechanism 20 is rotated by the driving force generated by the driving motor 16, the support portion 19, the first guide portion 11, and the second guide portion 12 reciprocate in the width direction a by an amount corresponding to the degree to which the center line of the eccentric pin 23 is offset from the center line of the rotary shaft 22. At this time, the moving component of the eccentric pin 23 in the up-down direction is absorbed by the long hole 19c. Thus, the traverse device 10A reciprocates the first belt 45a and the second belt 55a in the width direction a.

The unit controller 100 (see fig. 1) functions as a control unit that controls the operation of the draft device 3. Specifically, the unit controller 100 controls the operations of the first draft portion 40, the second draft portion 50, and the traverse device 10A as in the first and second examples described below. The following first and second examples are described in terms of the case where one unit controller 100 is provided in the pair of adjacent spinning units 2, but the pair of unit controllers 100 may be provided in a one-to-one manner in the pair of adjacent spinning units 2. In this case, the following first and second examples are implemented by the pair of unit controllers 100 communicating with each other.

In the first example, when the sliver S is drawn by the first drawing unit 40 and the sliver S is drawn by the second drawing unit 50, the unit controller 100 drives the drive motor 16 to reciprocate the first guide 11 and the second guide 12 (i.e., reciprocate the first belt 45a and the second belt 55 a). When the draft of the sliver S by the first draft portion 40 is stopped and the draft of the sliver S by the second draft portion 50 is performed, the unit controller 100 stops the first draft roller 43a and the first belt 45a, and stops the drive motor 16, thereby stopping the first guide portion 11 and the second guide portion 12 (i.e., stopping the first belt 45a and the second belt 55 a). When the draft of the sliver S by the first draft portion 40 is performed and the draft of the sliver S by the second draft portion 50 is stopped, the unit controller 100 stops the second draft roller 53a and the second belt 55a and stops the drive motor 16, thereby stopping the first guide portion 11 and the second guide portion 12 (i.e., stopping the first belt 45a and the second belt 55 a).

As an example, the unit controller 100 stops the drawing of the sliver S by the first drawing unit 40 when at least one of the yarn faults is detected by the yarn monitoring device 5 on the first drawing unit 40 side (one yarn monitoring device 5 of the pair of adjacent spinning units 2) and the yarn Y is broken by the yarn monitoring device 5 on the first drawing unit 40 side or the like. The unit controller 100 stops the drawing of the sliver S by the second drafting unit 50 when at least one of the yarn defect is detected by the yarn monitoring device 5 on the second drafting unit 50 side (the other yarn monitoring device 5 of the adjacent pair of spinning units 2) and the yarn Y breakage is detected by the yarn monitoring device 5 on the second drafting unit 50 side or the like. The draft of the sliver S by the first draft portion 40 starts when the yarn Y starts to be cut or the winding of the yarn Y starts again by the winding device 8 on the first draft portion 40 side, and is continuously performed until the yarn Y is cut. The draft of the sliver S by the second draft portion 50 is started when the yarn Y starts to be cut or the winding of the yarn Y starts again by the winding device 8 on the side of the second draft portion 50, and is then continuously performed until the yarn Y is cut. The operation of the traverse device 10A at the time of starting or restarting the winding of the yarn Y by at least one winding device of the winding device 8 on the first drafting unit 40 side and the winding device 8 on the second drafting unit 50 side can be appropriately adjusted.

In the second example, when the sliver S is drawn by the first drawing unit 40 and the sliver S is drawn by the second drawing unit 50, the unit controller 100 drives the drive motor 16 to reciprocate the first guide 11 and the second guide 12 (i.e., reciprocate the first belt 45a and the second belt 55 a). When the draft of the sliver S by the first draft portion 40 is stopped and the draft of the sliver S by the second draft portion 50 is performed, the unit controller 100 rotates the first draft roller 43a and the first belt 45a, and reciprocates the first guide 11 and the second guide 12 (i.e., reciprocates the first belt 45a and the second belt 55 a). When the draft of the sliver S by the first draft portion 40 is performed and the draft of the sliver S by the second draft portion 50 is stopped, the unit controller 100 rotates the second draft roller 53a and the second belt 55a, and reciprocates the first guide portion 11 and the second guide portion 12 (i.e., reciprocates the first belt 45a and the second belt 55 a).

The following describes the processing of the traverse device 10A during maintenance. When the operator performs maintenance of the driving unit 15, the operator removes the fastener 25 from the eccentric pin 23, and removes the mounting unit 17 from the base 31 (see fig. 2, 3, and 4) of the draft device 3. Thereby, the driving unit 15 can be removed from the draft device 3 without removing the support unit 19, the first guide unit 11, and the second guide unit 12 from the draft device 3. When the operator performs maintenance of the support portion 19, the first guide portion 11, and the second guide portion 12, the operator removes the fastener 25 from the eccentric pin 23, and removes the fastener 37 from each of the restricting portions 36. Thereby, the support portion 19, the first guide portion 11, and the second guide portion 12 can be removed from the draft device 3 without removing the drive portion 15 from the draft device 3.

[ operation and Effect of the first embodiment ]

In the traverse device 10A, the driving unit 15 reciprocates only the first guide 11 that guides the first belt 45a and the second guide 12 that guides the second belt 55a in the width direction a. Thus, the driving states of the first guide 11 and the second guide 12 can be matched with the driving states of the first belt 45a and the second belt 55a in two units.

In the traverse device 10A, the driving section 15 has a single driving motor 16 that generates driving force for reciprocating the first guide section 11 and the second guide section 12. Thereby, cost reduction and space saving can be achieved.

In the traverse device 10A, the driving unit 15 includes a mounting unit 17 that supports the driving motor 16 and the driving mechanism 20. Thus, for example, when the traverse device 10A is attached to or detached from the draft device 3, the drive motor 16 and the drive mechanism 20 can be handled as a unit.

In the traverse device 10A, the driving unit 15 includes a detecting unit 18 that detects a rotation reference position of the driving mechanism 20, and the driving motor 16 is a stepping motor. Thus, the rotational speed of the drive motor 16 can be controlled based on the detected rotation reference position and the number of pulses input to the drive motor 16. As a result, the moving speeds of the first guide portion 11 and the second guide portion 12 (i.e., the traverse speeds of the first belt 45a and the second belt 55 a) can be adjusted in accordance with the positions of the first guide portion 11 and the second guide portion 12. As an example, by relatively increasing the moving speeds of the first guide portion 11 and the second guide portion 12 when the moving direction of the first guide portion 11 and the second guide portion 12 is changed, it is possible to achieve uniformity in the wear degrees (wear degrees in the width direction a) of the first belt 45a and the second belt 55a due to contact of the sliver S. In other words, the movement speed of the first guide portion 11 and the second guide portion 12 may be reduced at the central portions of the first belt 45a and the second belt 55a in the width direction a.

In the traverse device 10A, the support portion 19 supports the first guide portion 11 and the second guide portion 12, and the driving mechanism 20 is rotated by the driving force generated by the driving motor 16, whereby the support portion 19 is reciprocated. Thus, the first guide 11 and the second guide 12 can be reciprocally moved by a simple structure.

In the draft device 3 including the traverse device 10A, as in the first example described above, the unit controller 100 controls the operations of the first draft portion 40, the second draft portion 50, and the traverse device 10A. That is, in the draft device 3, when at least one of the draft of the sliver S by the first draft portion 40 and the draft of the sliver S by the second draft portion 50 is stopped, the first guide portion 11 and the second guide portion 12 are stopped. Thus, for example, the first guide 11 or the second guide 12 that can prevent the reciprocating movement applies an unnecessary load to the stopped first belt 45a or second belt 55 a.

In the draft device 3 including the traverse device 10A, the unit controller 100 controls the operations of the first draft portion 40, the second draft portion 50, and the traverse device 10A as in the second example described above. That is, in the draft device 3, even if at least one of the draft of the sliver S by the first draft portion 40 and the draft of the sliver S by the second draft portion 50 is stopped, the first draft roller 43a and the first belt 45a, and the second draft roller 53a and the second belt 55a continue to rotate, and the first guide portion 11 and the second guide portion 12 continue to reciprocate. Thus, unnecessary load can be prevented from being applied to the first belt 45a or the second belt 55a by simple control. The simple control means, for example, control to continue the rotation of the first belt 45a and the second belt 55a and the reciprocating movement of the first guide 11 and the second guide 12 even in a state where the draft is stopped.

In the draft device 3 including the traverse device 10A, a pair of

long holes

19a, 19b extending in the width direction a are formed in the support portion 19, one restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 19a in a state of being movable in the width direction a, and the other restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 19b in a state of being movable in the width direction a. This enables the first guide portion 11 and the second guide portion 12 to reciprocate more accurately in the width direction a.

In the spinning machine 1, a pair of predetermined sections 35 provided in the first drawing section 40 and the second drawing section 50 and a pair of air spinning devices 4 corresponding to the first drawing section 40 and the second drawing section 50 are fixed in the width direction a while the sliver S is drawn by the first drawing section 40 and the sliver S is drawn by the second drawing section 50. In this way, the first belt 45a and the second belt 55a can be reciprocated in the width direction a while the pair of predetermined parts 35 and the pair of air spinning devices 4 are fixed in the width direction a. When the pair of predetermined units 35 and the pair of air spinning devices 4 are fixed in the width direction a while the sliver S is drawn by the first drawing unit 40 and the sliver S is drawn by the second drawing unit 50, the yarn path of the yarn Y from each of the pair of air spinning devices 4 is stabilized. As a result, for example, the yarn Y coming out of the air spinning device 4 can be reliably caught by the first catch guide 9a when the spinning starts again.

[ Structure of traversing device of the second embodiment ]

As shown in fig. 9, 10, and 11, the traverse device 10B according to the second embodiment includes first and

second guide portions

11 and 12, first and

second support portions

13 and 14, and a driving portion 15. The traverse device 10B reciprocates the first belt 45a and the second belt 55a in the width direction a. The draft device 3 and the spinning machine 1 to which the traverse device 10B of the second embodiment is applied have the same configuration as the draft device 3 and the spinning machine 1 of the first embodiment.

The first guide 11 guides the first belt 45a by disposing the lower portion of the first belt 45a in the slit 11 a. The second guide 12 guides the second belt 55a by disposing the lower portion of the second belt 55a in the slit 12 a.

The first support portion 13 is a plate-like member that supports the first guide portion 11. The restricting portion 36 is engaged with the first support portion 13. Specifically, the first support portion 13 is formed with a long hole 13a extending in the width direction a. One restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 13a so as to be movable in the width direction a. A fastener 37 is detachably attached to the restricting portion 36. Thereby, the first supporting portion 13 is prevented from falling off from the restricting portion 36.

The second support portion 14 is a plate-like member that supports the second guide portion 12. The restricting portion 36 is engaged with the second support portion 14. Specifically, the second support portion 14 is formed with a long hole 14a extending in the width direction a. The other restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 14a in a movable state along the width direction a. A fastener 37 is detachably attached to the restricting portion 36. Thereby, the second support portion 14 is prevented from falling off from the restriction portion 36.

The driving section 15 reciprocates only the first guide section 11 and the second guide section 12 in the width direction a. The driving unit 15 includes a driving motor 16, a driving mechanism 20, a mounting unit 17, and a detecting unit 18. The drive motor 16 is a stepping motor that generates a driving force for reciprocating the first guide portion 11 and the second guide portion 12. The driving mechanism 20 is rotated by a driving force generated by the single driving motor 16, thereby selectively reciprocating at least one of the first supporting portion 13 and the second supporting portion 14. The mounting portion 17 supports the drive motor 16 and the drive mechanism 20. The mounting portion 17 is detachably mounted to a base 31 of the draft device 3 (see fig. 2, 3, and 4). The detection unit 18 detects a rotation reference position of the drive mechanism 20.

The drive mechanism 20 has a circular plate 21 and a rotary shaft 22. The rotation shaft 22 is provided on the front side of the circular plate 21. The center line of the rotary shaft 22 coincides with the center line of the circular plate 21. A groove 26 extending in an annular shape is formed in the rear surface of the circular plate 21. In the groove 26, a pin 13b provided in the first support portion 13 and a pin 14b provided in the second support portion 14 are disposed so as to be movable along the groove 26.

A cover 27 is detachably attached to the attachment portion 17 so as to cover the disk 21. The cover 27 has a pair of

elongated holes

27a and 27b extending in the width direction a. The pin 13c provided in the first support portion 13 is disposed in the long hole 27a so as to be movable in the width direction a. The pin 14c provided in the second support portion 14 is disposed in the long hole 27b so as to be movable in the width direction a. A fastener 25 is detachably attached to each of the

pins

13c and 14 c. Thereby, the cover 27 is prevented from falling off from the pair of

pins

13c, 14 c.

A magnet 24 is provided at the outer edge of the disk 21 of the drive mechanism 20. The detection unit 18 is attached to the cover 27 and faces the outer edge of the disk 21. The detection unit 18 is a magnetic sensor, and detects the rotation reference position of the drive mechanism 20 by detecting the magnet 24.

The rotation shaft 22 of the drive mechanism 20 is rotatably supported by the mounting portion 17. The rotation shaft 22 is connected to a rotation shaft (not shown) of the drive motor 16 via a power transmission member (not shown).

The groove 26 formed in the disk 21 of the drive mechanism 20 will be described. As shown in fig. 12 (a), 12 (b), and 12 (c), the groove 26 has a first portion 26a and a second portion 26b. The first portion 26a is a portion having a half-cycle size centered on the center line of the rotation shaft 22. The distance between the center line of the rotation shaft 22 and each portion of the first portion 26a is constant. The second portion 26b is a portion centered on the center line of the rotation shaft 22 and having the remaining half-circumference size. The distance between the center line of the rotation shaft 22 and each portion of the second portion 26b increases as it moves away from both end portions of the first portion 26 a. Hereinafter, the boundary portion from the second portion 26b to the first portion 26a in the clockwise direction is referred to as a boundary portion P1, and the boundary portion from the first portion 26a to the second portion 26b in the clockwise direction is referred to as a boundary portion P2.

As shown in fig. 12 (a), when the driving mechanism 20 rotates clockwise from the state in which the pin 13b is disposed at the boundary portion P1 and the pin 14b is disposed at the boundary portion P2, the position of the pin 13b gradually moves away from the center line of the rotation shaft 22 as shown in fig. 12 (a) and 12 (b) although the position of the pin 14b is constant. When the driving mechanism 20 is rotated further clockwise from this state, as shown in fig. 12 (b) and 12 (c), the position of the pin 14b is constant, but the position of the pin 13b gradually approaches the center line of the rotation shaft 22.

Therefore, when the driving mechanism 20 continues to rotate in either the clockwise or counterclockwise direction, the reciprocating movement of the pin 13b in the width direction a and the reciprocating movement of the pin 14b in the width direction a are repeated. This repeats the reciprocation of the first support portion 13 and the first guide portion 11 in the width direction a and the reciprocation of the second support portion 14 and the second guide portion 12 in the width direction a (see fig. 11). When the drive mechanism 20 repeats rotation of 180 degrees clockwise and rotation of 180 degrees counterclockwise from the state shown in fig. 12 (a), only the reciprocating movement of the pin 13b in the width direction a is repeated. Thus, only the first support portion 13 and the first guide portion 11 repeatedly reciprocate in the width direction a (see fig. 11). When the drive mechanism 20 repeats rotation of 180 degrees counterclockwise and rotation of 180 degrees clockwise from the state shown in fig. 12 (a), only the reciprocating movement of the pin 14b in the width direction a is repeated. Thus, only the reciprocation of the second support portion 14 and the second guide portion 12 in the width direction a is repeated (see fig. 11). As described above, the driving mechanism 20 is rotated by the driving force generated by the single driving motor 16, and thereby at least one of the first support portion 13 and the second support portion 14 can be selectively reciprocated according to the rotation of the driving mechanism 20.

The unit controller 100 (see fig. 1) functions as a control unit that controls the operation of the draft device 3. Specifically, as in the third example below, the unit controller 100 controls the operations of the first draft portion 40, the second draft portion 50, and the traverse device 10B. The next third example is a case where one unit controller 100 is provided in an adjacent pair of spinning units 2. However, a pair of unit controllers 100 may be provided in a one-to-one manner for an adjacent pair of spinning units 2. In this case, the pair of unit controllers 100 communicate with each other, thereby implementing the following third example.

In the third example, when the sliver S is drawn by the first drawing unit 40 and the sliver S is drawn by the second drawing unit 50, the unit controller 100 drives the drive motor 16 to reciprocate the first guide 11 and the second guide 12 (i.e., reciprocate the first belt 45a and the second belt 55 a). When the draft of the sliver S by the first draft portion 40 is stopped and the draft of the sliver S by the second draft portion 50 is performed, the unit controller 100 stops the first draft roller 43a and the first belt 45a, stops the first guide 11, and reciprocates the second guide 12 (that is, stops the first belt 45a and reciprocates the second belt 55 a). When the draft of the sliver S by the first draft portion 40 is performed and the draft of the sliver S by the second draft portion 50 is stopped, the unit controller 100 stops the second draft roller 53a and the second belt 55a, reciprocates the first guide 11, and stops the second guide 12 (that is, reciprocates the first belt 45a and stops the second belt 55 a).

The following describes the processing of the traverse device 10B during maintenance. When the operator performs maintenance of the driving unit 15, the operator removes the fastening members 25 from the

pins

13c and 14c, removes the cover 27 from the mounting unit 17, and removes the mounting unit 17 from the base 31 (see fig. 2, 3, and 4) of the draft device 3. Thereby, the driving unit 15 can be removed from the draft device 3 without removing the first support portion 13 and the first guide portion 11 and the second support portion 14 and the second guide portion 12 from the draft device 3. When the operator performs maintenance on the first support portion 13 and the first guide portion 11, the operator removes the fastener 25 from the

pins

13c and 14c, removes the cover 27 from the mounting portion 17, and removes the fastener 37 from the restricting portion 36 disposed in the long hole 13 a. Thereby, the first support portion 13 and the first guide portion 11 can be removed from the draft device 3 without removing the driving portion 15, the second support portion 14, and the second guide portion 12 from the draft device 3. When the operator performs maintenance of the second support portion 14 and the second guide portion 12, the operator removes the fastener 25 from the

pins

13c and 14c, removes the cover 27 from the mounting portion 17, and removes the fastener 37 from the restricting portion 36 disposed in the long hole 14 a. Thereby, the second support portion 14 and the second guide portion 12 can be removed from the draft device 3 without removing the driving portion 15, the first support portion 13, and the first guide portion 11 from the draft device 3.

[ operation and Effect of the second embodiment ]

In the traverse device 10B, the driving unit 15 reciprocates only the first guide 11 that guides the first belt 45a and the second guide 12 that guides the second belt 55a in the width direction a. Thus, the driving states of the first guide 11 and the second guide 12 can be matched with the driving states of the first belt 45a and the second belt 55a in two units.

In the traverse device 10B, the driving section 15 has a single driving motor 16 that generates driving force for reciprocating the first guide section 11 and the second guide section 12. Thereby, cost reduction and space saving can be achieved.

In the traverse device 10B, the driving unit 15 includes a mounting unit 17 that supports the driving motor 16 and the driving mechanism 20. Thus, for example, when the traverse device 10B is attached to or detached from the draft device 3, the drive motor 16 and the drive mechanism 20 can be handled as a unit.

In the traverse device 10B, the driving unit 15 includes a detecting unit 18 that detects a rotation reference position of the driving mechanism 20, and the driving motor 16 is a stepping motor. Thus, the rotational speed of the drive motor 16 can be controlled based on the detected rotation reference position and the number of pulses input to the drive motor 16. As a result, the moving speeds of the first guide portion 11 and the second guide portion 12 (i.e., the traverse speeds of the first belt 45a and the second belt 55 a) can be controlled according to the positions of the first guide portion 11 and the second guide portion 12. As an example, by relatively increasing the moving speeds of the first guide portion 11 and the second guide portion 12 when the moving direction of the first guide portion 11 and the second guide portion 12 is changed, it is possible to achieve uniformity in the wear degrees (wear degrees in the width direction a) of the first belt 45a and the second belt 55a due to contact of the sliver S.

In the traverse device 10B, the first support portion 13 supports the first guide portion 11, the second support portion 14 supports the second guide portion 12, and the driving mechanism 20 rotates by the driving force generated by the driving motor 16, thereby selectively reciprocating at least one of the first support portion 13 and the second support portion 14. Thus, the first guide 11 and the second guide 12 can be reciprocally moved by a simple structure. Further, the driving state of the first guide 11 can be matched with the driving state of the first belt 45a, and the driving state of the second guide 12 can be matched with the driving state of the second belt 55 a.

In the draft device 3 including the traverse device 10B, the unit controller 100 controls the operations of the first draft portion 40, the second draft portion 50, and the traverse device 10B as in the third example described above. Thus, the driving state of the first guide 11 can be matched with the driving state of the first belt 45a, and the driving state of the second guide 12 can be matched with the driving state of the second belt 55 a.

In the draft device 3 including the traverse device 10B, the long hole 13a extending in the width direction a is formed in the first support portion 13, and one restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 13a so as to be movable in the width direction a. This makes it possible to more accurately reciprocate the first guide 11 in the width direction a. In the draft device 3, a long hole 14a extending in the width direction a is formed in the second support portion 14, and the other restriction portion 36 of the pair of restriction portions 36 is disposed in the long hole 14a in a state of being movable in the width direction a. This makes it possible to more accurately reciprocate the second guide 12 in the width direction a.

Modification example

The present disclosure is not limited to the first and second embodiments described above. For example, a traverse device according to an embodiment of the present disclosure may be provided with: a guide part for guiding the tangential belt; and a driving part for reciprocating the guide parts along the width direction of the belt, wherein the driving part reciprocates only one guide part or only two guide parts as the guide parts. In such a traverse device, even when the belt is driven for each of the plurality of drafting units in the spinning machine having the plurality of drafting units, the driving state of the guide unit can be matched with the driving state of the belt in one or two units. Thus, the traverse device is suitable for driving the belt for each drawing section.

The

traversing devices

10A and 10B may be configured to reciprocate the belts 45B and 55B on the top roller side. In this case, the

traverse devices

10A and 10B are attached to, for example, a draft cradle 32.

The draft device 3 may further include: traversing

devices

10A and 10B configured to reciprocate the

belts

45a and 55a on the bottom roller side; and

traversing devices

10A and 10B configured to reciprocate the upper belts 45B and 55B.

In the first and second embodiments, the driving mechanism 20 is an eccentric cam mechanism using the pin 23 or the groove 26, but the driving mechanism of one embodiment of the present disclosure may be another mechanism (for example, a rack and pinion or the like) capable of converting a rotational motion into a linear motion.

The drive motor 16 may be a motor other than a stepping motor.

The detection unit 18 may not be provided.

In the spinning unit 2, the traveling direction of the yarn Y is switched at the yarn storage device 6, but the traveling direction of the yarn Y may not be switched at the yarn storage device 6. The direction of travel of yarn Y may also be switched by other means.

In the spinning unit 2, each device may be arranged such that the yarn Y supplied from the upper side is wound on the lower side. In this case, the

traverse devices

10A and 10B may be arranged such that the front-rear direction of the

traverse devices

10A and 10B is opposite to the above-described embodiment.

In order to draw the yarn Y out of the air spinning device 4, a yarn drawing roller and a grip roller may be disposed between the air spinning device 4 and the yarn storage device 6. In the case where the yarn drawing roller and the grip roller are provided, a slackening pipe (slackening tube) or a mechanical Compensator (Compensator) that absorbs slackening of the yarn Y by suction air flow may be provided instead of the yarn storage device 6. The yarn monitoring device 5 may be disposed between the yarn storage device 6 and the winding device 8.

The yarn splicing device 7, the first catching guide device 9a, and the second catching guide device 9b may be provided on a yarn splicing carriage movable in the direction in which the plurality of spinning units 2 are arranged. A yarn drawing device may be provided on a doffing cart movable in the direction in which the plurality of spinning units 2 are arranged, and the yarn drawing device may draw out the yarn Y from the package P at the time of splicing or the like.

The connector device 7 may be a mechanical knotter or the like. Alternatively, the yarn Y from the package P may be rewound into the air spinning device 4, and the yarn S may be drawn by the drawing device 3 and the yarn Y may be produced by the air spinning device 4, thereby splicing the yarn.

In the winding device 8, a traverse groove may not be formed on the surface of the winding drum 82, and the yarn Y may be traversed by a traverse device provided separately when the yarn Y is wound around the bobbin B. In the winding device 8, the bobbin B may be driven to rotate, and the winding drum 82 in contact with the bobbin B may be driven to rotate.

The draft device 3 may further include a cleaning device for cleaning the

top rollers

41b, 42b, 43b, 44b of the first draft portion 40 and the

top rollers

51b, 52b, 53b, 54b of the second draft portion 50. The cleaning device may have, for example, a swinging pad provided for each top roller (see japanese patent application laid-open publication No. 2016-194173) or an endless belt in contact with a plurality of top rollers (see japanese patent application laid-open publication No. 2016-188444). In the case where the draft device 3 includes a cleaning device, the driving motor 16 may drive the cleaning device. The cleaning device may be driven by a driving unit other than the driving motor 16 (for example, a driving unit dedicated to the cleaning device).

The driving motor 16 may be configured to reciprocate not only the first guide 11 and the second guide 12 but also other components of the draft device 3.

The driving motor 16 may be a motor that drives at least one of the rear bottom roller 41a and the third bottom roller 42a in each spinning unit 2.

The front top roller 44b and the first suction nozzle 63 of the suction device 60 may be supported by a housing that supports the front bottom roller 44a, instead of the draft cradle 32. The front upper roller 54b and the second suction nozzle 64 of the suction device 60 may be supported by a housing that supports the front lower roller 54a, instead of the draft cradle 32. That is, the front

top rollers

44b, 54b may be provided so as to be movable between the contact position and the distant position independently of the other top rollers.

According to the present disclosure, a traverse device, a draft device, and a spinning machine suitable for driving a belt for each draft portion can be provided.

Claims

1. A draft device having a traverse device, a first draft unit, a second draft unit, and a pair of predetermined units, wherein the traverse device comprises: a guide part for guiding the tangential belt; and a driving part for reciprocating the guiding part along the width direction of the tangential belt,

The driving part reciprocates only two guide parts as the guide parts,

the two guiding parts are a first guiding part and a second guiding part which are used as the dragon belts to guide the two dragon belts respectively,

the two belts are a first belt and a second belt adjacent to each other in the width direction of the belts,

the first guide portion guides the first belt,

the second guide portion guides the second tangential belt,

the driving part reciprocates only the first guide part and the second guide part,

the driving section has a single driving motor that generates a driving force for reciprocating the first guide section and the second guide section, and is disposed between the first guide section and the second guide section,

the first drafting part comprises the first tangential belt and a first drafting roller for erecting the first tangential belt,

the second drafting part comprises the second tangential belt and a second drafting roller for erecting the second tangential belt, the second drafting part is adjacent to the first drafting part in the width direction of the tangential belt,

the first draft roller and the second draft roller are rotatably supported by a common base and rotated by respective independent driving motors,

The pair of prescribed sections prescribe paths of fiber bundles drawn by the first drawing section and the second drawing section, respectively.

2. Drafting device according to claim 1, wherein,

at least one supporting part for supporting the first guiding part and the second guiding part is also provided,

the driving section further has a driving mechanism that rotates by the driving force generated by the single driving motor, thereby reciprocating the at least one supporting section.

3. Drafting device according to claim 2, wherein,

the drive section also has a mounting section that supports the single drive motor and the drive mechanism.

4. A drafting device according to claim 2 or claim 3, wherein,

the driving part further has a detecting part for detecting a rotation reference position of the driving mechanism,

the single drive motor is a stepper motor.

5. Drafting device according to any one of claims 2 to 4, wherein,

the at least one support portion is a single support portion that supports the first guide portion and the second guide portion,

the driving mechanism rotates by the driving force generated by the single driving motor, thereby reciprocally moving the single supporting portion.

6. Drafting device according to any one of claims 2 to 4, wherein,

the at least one supporting part is a first supporting part for supporting the first guiding part and a second supporting part for supporting the second guiding part,

the driving mechanism rotates by the driving force generated by the single driving motor, thereby selectively reciprocating at least one of the first supporting portion and the second supporting portion.

7. The draft device according to claim 5, wherein a control unit is provided for controlling the operations of each of the traverse device, the first draft portion, and the second draft portion,

the control unit performs the following control:

when the first drafting unit and the second drafting unit are used for drafting, the first guiding unit and the second guiding unit are moved back and forth,

when the drafting by the first drafting unit is stopped and the drafting by the second drafting unit is performed, the first drafting roller and the first tangential belt are stopped, the first guiding unit and the second guiding unit are stopped,

when the draft by the first draft unit is performed and the draft by the second draft unit is stopped, the second draft roller and the second belt are stopped, and the first guide unit and the second guide unit are stopped.

8. The draft device according to claim 5, wherein a control unit is provided for controlling the operations of each of the traverse device, the first draft portion, and the second draft portion,

the control unit performs the following control:

when the drafting by the first drafting unit is stopped and the drafting by the second drafting unit is performed, the first drafting roller and the first tangential belt are rotated and the first guiding unit and the second guiding unit are reciprocated,

when the drafting by the first drafting unit is performed and the drafting by the second drafting unit is stopped, the second drafting roller and the second belt are rotated and the first guiding unit and the second guiding unit are reciprocated.

9. The draft device according to claim 6, wherein a control unit is provided for controlling the operations of each of the traverse device, the first draft portion, and the second draft portion,

The control unit performs the following control:

when the drafting by the first drafting unit is stopped and the drafting by the second drafting unit is performed, the first drafting roller and the first tangential belt are stopped, the first guiding unit is stopped, the second guiding unit is reciprocated,

when the drafting by the first drafting unit is performed and the drafting by the second drafting unit is stopped, the second drafting roller and the second belt are stopped, the first guiding unit is reciprocated, and the second guiding unit is stopped.

10. Drafting device according to claim 7 or 8, wherein,

further comprises a limiting part which is engaged with the at least one supporting part,

the at least one support portion includes a plate-like member formed with a long hole extending in the width direction of the belt,

the regulating portion is disposed in the elongated hole so as to be movable in the width direction of the belt.

11. A spinning machine is provided with:

drafting device according to any one of claims 7 to 10;

a pair of air spinning devices for twisting the fiber bundles respectively drawn out by the first drawing part and the second drawing part to form two yarns; and

a pair of winding devices for winding the yarns produced by the pair of air spinning devices to form two packages,

the pair of predetermined portions and the pair of air spinning devices are fixed in the width direction of the endless belt while the drafting by the first drafting portion and the drafting by the second drafting portion are performed.