CN109626108B

CN109626108B - Yarn winding machine

Info

Publication number: CN109626108B
Application number: CN201811237847.6A
Authority: CN
Inventors: 中山升
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2013-09-17
Filing date: 2014-09-03
Publication date: 2020-10-13
Anticipated expiration: 2034-09-03
Also published as: CN104444576B; EP2848565A1; JP2015059277A; CN109626108A; CN104444576A; EP2848565B1

Abstract

The present invention relates to a yarn winding machine. The spinning machine (10) comprises: a 1 st spinning unit (1a) for winding a 1 st yarn to form a 1 st package; a 2 nd spinning unit (1b) which is disposed adjacent to the 1 st spinning unit (1a) in a predetermined direction (D) and which winds a 2 nd yarn to form a 2 nd package; and a yarn joining device (90) which is provided in common only for the 1 st spinning unit (1a) and the 2 nd spinning unit (1b), and which joins the 1 st yarn in the 1 st spinning unit (1a) and joins the 2 nd yarn in the 2 nd spinning unit (1 b).

Description

Yarn winding machine

The application is a divisional application of Chinese invention patent application with the application number of 201410445966.6, the application date of 2014, 9, 3 and the invention name of 'yarn winding machine'.

Technical Field

The present invention relates to a yarn winding machine.

Background

Yarn winding machines are known which comprise a plurality of yarn winding units which wind a yarn to form a package. Such a yarn winding machine is provided with a yarn joining device that connects a yarn on a supply side and a yarn on a package side when, for example, the yarn is cut to remove a yarn defect. The yarn joining device is provided for each yarn winding unit and is commonly provided for 20 or more and 40 or less yarn winding units. When the yarn splicing device is provided in common to a plurality of yarn winding units, the yarn splicing device is configured to be movable with respect to 20 or more and 40 or less yarn winding units (see, for example, japanese patent application laid-open No. 2005-330596).

Disclosure of Invention

Problems to be solved by the invention

In the case where one yarn splicing device is provided for each yarn winding unit, when the number of times of yarn splicing in each yarn winding unit is small, the number of yarn splicing devices required for yarn splicing becomes excessive, and cost efficiency is reduced. In the case where one yarn splicing device is provided in common for 20 or more and 40 or less yarn winding units, if the number of times of yarn splicing is performed in each yarn winding unit is large, the number of yarn splicing devices required for yarn splicing becomes insufficient, and the package productivity is lowered.

The invention aims to provide a yarn winding machine capable of restraining cost-effectiveness reduction and package productivity reduction.

Means for solving the problems

The yarn winding machine of the present invention comprises: a 1 st yarn winding unit for winding the 1 st yarn to form a 1 st package; a 2 nd yarn winding unit which is disposed adjacent to the 1 st yarn winding unit in a predetermined direction and winds the 2 nd yarn to form a 2 nd package; and a yarn joining device provided commonly only for the 1 st and 2 nd yarn winding units, and performing yarn joining in each of the 1 st and 2 nd yarn winding units.

In this yarn winding machine, the yarn joining device is provided in common only for the 1 st yarn winding unit and the 2 nd yarn winding unit. Therefore, even if the number of times of yarn splicing in each yarn winding unit is small, the number of yarn splicing devices required for yarn splicing is unlikely to become excessive compared to the case where one yarn splicing device is provided in one yarn winding unit. Even if the number of times of yarn splicing is large in each yarn winding unit, the number of yarn splicing devices required for yarn splicing is less likely to be insufficient than in the case where one yarn splicing device is commonly provided for 20 to 40 yarn winding units. Therefore, according to the yarn winding machine, both a decrease in cost efficiency and a decrease in package productivity can be suppressed.

In the yarn winding machine according to the present invention, the yarn joining device may be provided so as to be movable in a predetermined direction between a 1 st yarn joining position in a 1 st yarn winding unit and a 2 nd yarn joining position in a 2 nd yarn winding unit. In this case, the 1 st yarn winding unit and the 2 nd yarn winding unit can share the yarn joining device with a simple configuration.

In the yarn winding machine according to the present invention, the movement of the yarn joining device beyond the region between the end portion of the 1 st yarn winding unit on the side opposite to the 2 nd yarn winding unit and the end portion of the 2 nd yarn winding unit on the side opposite to the 1 st yarn winding unit may be restricted. In this case, since the moving distance of the yarn joining device is shortened, the waiting time for the yarn joining in each yarn winding unit can be shortened.

The yarn winding machine of the present invention may further include: a 1 st frame which is provided along an end portion of the 1 st yarn winding unit on the opposite side to the 2 nd yarn winding unit and supports at least a part of the 1 st yarn winding unit; and a 2 nd frame provided along an end portion of the 2 nd yarn winding unit on the opposite side to the 1 st yarn winding unit, and supporting at least a part of the 2 nd yarn winding unit, wherein the yarn joining device is provided to be movable in a predetermined direction in an area between the 1 st frame and the 2 nd frame, and movement beyond the area between the 1 st frame and the 2 nd frame is restricted. In this case, since it is not necessary to provide a dedicated space for moving the yarn joining device, the degree of freedom in layout of the yarn winding machine can be increased. Further, since it is not necessary to provide openings for passing the yarn joining device in the 1 st frame and the 2 nd frame, for example, sufficient rigidity of the 1 st frame and the 2 nd frame can be ensured with less material than in the case of providing the openings.

In the yarn winding machine of the present invention, the width of the yarn joining device in the predetermined direction may be equal to or less than the width of each of the 1 st yarn winding unit and the 2 nd yarn winding unit in the predetermined direction. In this case, since the yarn joining device does not extend outside each of the 1 st yarn winding unit and the 2 nd yarn winding unit, the enlargement of the installation space of the yarn winding machine can be suppressed.

In the yarn winding machine according to the present invention, the yarn joining device may include a driving section for moving the yarn joining device in a predetermined direction. In this case, the yarn splicing device can be easily moved to an appropriate position.

In the yarn winding machine of the present invention, the yarn joining device may include a yarn joining section that joins the 1 st yarn and joins the 2 nd yarn. In this case, the yarn joining of the 1 st yarn and the 2 nd yarn can be appropriately performed.

In the yarn winding machine of the present invention, the yarn joining section may be movable forward and backward with respect to the movement path of the 1 st yarn in the 1 st yarn winding unit and movable forward and backward with respect to the movement path of the 2 nd yarn in the 2 nd yarn winding unit. In this case, the yarn joining section is retracted so as not to interfere with each member at a time other than the yarn joining time of the 1 st yarn and the yarn joining time of the 2 nd yarn, and the yarn joining of the 1 st yarn and the 2 nd yarn can be appropriately performed on or near the movement path of each of the 1 st yarn and the 2 nd yarn at the yarn joining time of the 1 st yarn and the yarn joining time of the 2 nd yarn.

In the yarn winding machine of the present invention, the yarn joining device may further include a yarn feeding section that feeds the 1 st yarn to the yarn joining section when the 1 st yarn is joined and feeds the 2 nd yarn to the yarn joining section when the 2 nd yarn is joined. In this case, the 1 st yarn and the 2 nd yarn can be appropriately conveyed to the yarn joining section at the yarn joining time of the 1 st yarn and the yarn joining time of the 2 nd yarn.

In the yarn winding machine of the present invention, the 1 st yarn winding unit may include: a 1 st draft device for generating a 1 st fiber bundle; a 1 st spinning device for spinning the 1 st fiber bundle with a whirling air flow to produce a 1 st yarn; and a 1 st winding device for winding the 1 st yarn to form a 1 st package, wherein the 2 nd yarn winding unit includes: a 2 nd draft device for generating a 2 nd fiber bundle; a 2 nd spinning device for spinning the 2 nd fiber bundle with a whirling air flow to produce a 2 nd yarn; and a 2 nd winding device for winding the 2 nd yarn to form a 2 nd package, wherein a top roller of the 1 st draft device and a top roller of the 2 nd draft device are supported by a draft cradle provided commonly to the 1 st yarn winding unit and the 2 nd yarn winding unit. In this case, since the 1 st yarn winding unit and the 2 nd yarn winding unit share the draft cradle, the structure of the yarn winding machine can be simplified.

Drawings

Fig. 1 is a side view of a spinning unit in a spinning machine as a yarn winding machine according to an embodiment of the present invention.

Fig. 2 is a front view of a pair of spinning units in the spinning machine of fig. 1.

Fig. 3 is a front view of a pair of spinning units in the spinning machine of fig. 1.

Fig. 4 is a side view of the spinning unit in the yarn joining operation in the spinning machine of fig. 1.

Fig. 5 is a side view of the spinning unit in the yarn joining operation in the spinning machine of fig. 1.

Fig. 6 is a side view of the spinning unit in the yarn joining operation in the spinning machine of fig. 1.

Fig. 7 is a side view of the spinning unit in the yarn joining operation in the spinning machine of fig. 1.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and redundant description thereof is omitted.

As shown in fig. 1, 2, and 3, a spinning machine (yarn winding machine) 10 includes a plurality of spinning units 1 and a machine station control device (not shown). The plurality of spinning units 1 are disposed adjacent to each other along a predetermined direction D. The machine control device centrally manages the spinning units 1. Fig. 2 and 3 show only a pair of the 1 st spinning unit (1 st yarn winding unit) 1a and the 2 nd spinning unit (2 nd yarn winding unit) 1b arranged adjacent to each other in the predetermined direction D among the plurality of spinning units 1. Actually, a plurality of pairs of the 1 st spinning unit 1a and the 2 nd spinning unit 1b are arranged in parallel in the predetermined direction D via the frame 17. In the present embodiment, the 1 st spinning unit 1a and the 2 nd spinning unit 1b are collectively referred to as a spinning unit 1. In fig. 2 and 3, a part of the structure is omitted in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b.

As shown in fig. 1, the spinning unit 1 spins a fiber bundle (1 st fiber bundle, 2 nd fiber bundle) F fed from a draft device (1 st draft device, 2 nd draft device) 2 by a spinning device (1 st spinning device, 2 nd spinning device) 3 to generate a yarn (1 st yarn, 2 nd yarn) Y, and winds the generated yarn Y by a winding device (1 st winding device, 2 nd winding device) 4 to form a package (1 st package, 2 nd package) P. In the present embodiment, the upstream in the moving direction of the yarn Y is simply referred to as the upstream, and the downstream in the moving direction of the yarn Y is simply referred to as the downstream.

In the spinning unit 1, a draft device 2, a spinning device 3, a yarn accumulating device 5, a yarn monitoring device 6, and a winding device 4 are provided in this order from the upstream side along the moving path of the yarn Y. Each part of the spinning unit 1 is controlled by a unit controller (not shown) provided for each spinning unit 1. The pair of the 1 st spinning unit 1a and the 2 nd spinning unit 1b share one yarn joining device 90 (see fig. 2 and 3). The yarn joining device 90 is located at a yarn joining position (described later in detail) in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b, and performs yarn joining.

The draft device 2 includes 4 pairs of

draft roller pairs

21, 22, 23, and 24. The 4 pairs of

draft roller pairs

21, 22, 23, and 24 are respectively a rear roller pair, a 3 rd roller pair, a middle roller pair, and a front roller pair in this order from the upstream side along the moving path of the yarn Y. The draft roller pair 21 includes a top roller 21a as a driven roller and a bottom roller 21b as a driving roller. The draft roller pair 22 is composed of a top roller 22a as a driven roller and a bottom roller 22b as a driving roller. The draft roller pair 23 is composed of a top roller 23a as a driven roller and a bottom roller 23b as a driving roller. The draft roller pair 24 is composed of a top roller 24a as a driven roller and a bottom roller 24b as a driving roller. A conveyor belt 25 is stretched over each of the top roller 23a and the bottom roller 23b constituting the draft roller pair 23 as the intermediate roller pair. The draft device 2 produces a fiber bundle F by drawing the sliver S by conveying the sliver S supplied from the sliver can while nipping the sliver S by 4 pairs of draft roller pairs 21, 22, 23, 24. As shown in fig. 2 and 3, the

top rollers

21a, 22a, 23a, and 24a of the draft device 2 of the 1 st spinning unit 1a and the

top rollers

21a, 22a, 23a, and 24a of the draft device 2 of the 2 nd spinning unit 1b are supported by a draft cradle 26 provided commonly for the 1 st spinning unit 1a and the 2 nd spinning unit 1 b.

As shown in fig. 1, the spinning device 3 spins the fiber bundle F generated by the draft device 2 with a swirling air flow to generate a yarn Y. Specifically (but not shown), the spinning device 3 includes a fiber guide portion, a swirling flow generating nozzle, and a hollow guide shaft body. The fiber guide section guides the fiber bundle F sent from the draft device 2 to a spinning chamber in the spinning device 3. The swirling flow generating nozzle is arranged around the path of the fiber bundle F and generates a swirling air flow in the spinning chamber. Thereby, the fiber end is reversed and revolved in the spinning chamber. The hollow guide shaft guides the spun yarn Y from the spinning chamber to the outside of the spinning device 3. The yarn Y generated in the spinning device 3 is nipped by the delivery roller 7 and the grip roller 8 and fed toward the yarn accumulating device 5. The delivery roller 7 and the grip roller 8 may be omitted, and the yarn Y may be drawn out from the spinning device 3 by the yarn accumulating device 5.

The yarn accumulating device 5 includes a yarn accumulating roller 51, a drive motor 52, and a yarn guide hook member 53. The drive motor 52 rotates the yarn accumulating roller 51. The yarn guide hook member 53 winds the yarn Y around the yarn accumulating roller 51. The yarn accumulating device 5 temporarily accumulates the yarn Y by winding the yarn Y around the yarn accumulating roller 51. Further, in the spinning unit 1, the direction of the movement path of the yarn Y is largely changed on the upstream side and the downstream side of the yarn accumulating device 5. Specifically, the yarn Y is moved substantially horizontally from the front side toward the yarn accumulating device 5 on the upstream side of the yarn accumulating device 5, and the yarn Y is moved obliquely from the yarn accumulating device 5 toward the front side and upward on the downstream side of the yarn accumulating device 5. In the present embodiment, the side of the spinning machine 10 having the operator passage is referred to as the front side, and the opposite side is referred to as the rear side. The upper side in the height direction of the spinning machine 10 is simply referred to as the upper side, and the lower side in the height direction of the spinning machine 10 is simply referred to as the lower side.

The yarn hooking member 53 is supported to be rotatable relative to the yarn accumulating roller 51. A permanent magnet is attached to one of the yarn accumulating roller 51 and the guide hook member 53, and a magnetic hysteresis is attached to the other. These magnetic mechanisms generate a torque against the relative rotation of the yarn hooking member 53 with respect to the yarn accumulating roller 51. Therefore, only when a force exceeding the torque is applied to the guide hook member 53 (when a tension equal to or greater than a predetermined value is applied to the yarn Y), the guide hook member 53 rotates relative to the yarn accumulating roller 51, and the yarn Y wound around the yarn accumulating roller 51 is unwound. When a force exceeding the torque is not applied to the yarn guide hook member 53, the yarn guide hook member 53 rotates integrally with the yarn accumulating roller 51, and the yarn Y is wound around the yarn accumulating roller 51.

In this way, the yarn storage device 5 unwinds the yarn Y when the tension of the yarn Y increases on the downstream side of the yarn storage device 5, and the yarn storage device 5 stores the yarn Y when the tension of the yarn Y decreases on the downstream side of the yarn storage device 5 (when the yarn Y appears to be slack quickly). Thus, the yarn accumulating device 5 can eliminate the slack of the yarn Y and apply an appropriate tension to the yarn Y. Further, the yarn accumulating device 5 can absorb the tension variation of the yarn Y on the downstream side of the yarn accumulating device 5, and prevent the tension variation from affecting the movement of the yarn Y on the upstream side of the yarn accumulating device 5.

The 1 st guide 11 is disposed in the vicinity of the upstream side of the yarn accumulating device 5. The 1 st guide 11 guides the yarn Y to the yarn accumulating device 5. A pair of the 2 nd guides 12 and the 3 rd guides 13 is arranged in the vicinity of the downstream side of the yarn accumulating device 5. The 2 nd guides 12 and the 3 rd guides 13 stabilize the operation of the yarn Y unwound from the yarn accumulating device 5. In order to draw the yarn Y to the yarn accumulating device 5 at the time of performing yarn splicing or the like, the 1 st guide 11 and the 2 nd guide 12 are movable.

As shown in fig. 1, 2, and 3, 1 yarn joining device 90 is provided in common only for the pair of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b. The yarn joining device 90 joins the yarn Y in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b. That is, when the yarn Y breaks between the spinning device 3 and the package P for some reason in the 1 st spinning unit 1a, the yarn joining device 90 joins the yarn Y from the spinning device 3 and the yarn Y from the package P at the 1 st yarn joining position SP1 (position indicated by a solid line in fig. 2) in the 1 st spinning unit 1 a. When the yarn Y breaks between the spinning device 3 and the package P for some reason in the 2 nd spinning unit 1b, the yarn joining device 90 joins the yarn Y from the spinning device 3 and the yarn Y from the package P at the 2 nd yarn joining position SP2 (position indicated by a solid line in fig. 3) in the 2 nd spinning unit 1 b.

The yarn joining device 90 is provided so as to be movable in a prescribed direction D in an area between the 1 st frame 17a and the 2 nd frame 17b, and movement beyond the area between the 1 st frame 17a and the 2 nd frame 17b is restricted. The 1 st frame 17a is erected along an end portion of the 1 st spinning unit 1a on the opposite side to the 2 nd spinning unit 1b, and supports at least a part of the 1 st spinning unit 1a (the winding device 4, etc.). The 2 nd frame 17b is erected along an end portion of the 2 nd spinning unit 1b on the opposite side to the 1 st spinning unit 1a, and supports at least a part of the 2 nd spinning unit 1b (the winding device 4 and the like).

That is, the yarn joining device 90 is movable in the predetermined direction D in a region between an end of the 1 st spinning unit 1a opposite to the 2 nd spinning unit 1b and an end of the 2 nd spinning unit 1b opposite to the 1 st spinning unit 1 a. However, the yarn joining device 90 is restricted from moving beyond the region between the end of the 1 st spinning unit 1a opposite to the 2 nd spinning unit 1b and the end of the 2 nd spinning unit 1b opposite to the 1 st spinning unit 1 a. The reason why the yarn splicing device 90 is movable in the predetermined direction D between the 1 st yarn splicing position SP1 of the 1 st spinning unit 1a and the 2 nd yarn splicing position SP2 of the 2 nd spinning unit 1b is that: the width W1 of the yarn joining device 90 in the predetermined direction D is equal to or less than the width W2 of each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b in the predetermined direction D. The width W1 of the yarn joining device 90 in the predetermined direction D is, for example, 21Omm or more and 260mm or less. The width W2 of each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b in the predetermined direction D is, for example, 215mm to 270 mm.

In the present embodiment, the width W1 is the "length of the side along the predetermined direction D" of the smallest rectangle that accommodates the entire one yarn splicing device 90 when viewed from the direction perpendicular to the predetermined direction D (for example, when viewed from the front side). The width W2 is a "length of a side along the predetermined direction D" of a smallest rectangle that accommodates the entire single spinning unit 1 when viewed from a direction perpendicular to the predetermined direction D (for example, when viewed from the front side). However, the width W1 can also be understood as: when the yarn joining device 90 is assumed to be simultaneously located in each of the two spinning units 1 arranged adjacently, the "width in the predetermined direction D" of the portion (non-overlapping portion) of one yarn joining device 90 obtained by removing the portion where the two yarn joining devices 90 overlap each other when viewed in the direction perpendicular to the predetermined direction D is provided. The width W2 can also be understood as a value obtained by dividing the distance between the inner side of the 1 st frame 17a and the inner side of the 2 nd frame 17b by the number of spinning units 1 (two in the present embodiment) present therebetween. The width W2 can also be understood as a value obtained by dividing the distance between the center of the width of the 1 st frame 17a and the center of the width of the 2 nd frame 17b by the number of spinning units 1 (two in the present embodiment) present therebetween. The width W2 can also be understood as a range having a predetermined length from the moving path of the yarn Y to both sides in the predetermined direction D. In this case, the movement path of the yarn Y may or may not pass through the center of the width W2.

The yarn joining device 90 includes a yarn joining section 91, an upstream yarn conveying section (yarn conveying section) 92, a downstream yarn conveying section (yarn conveying section) 93, a carriage main body 97, a drive section 98, and a control section (not shown). The carriage main body 97 is movable along a pair of

rails

18a, 18b erected between the 1 st frame 17a and the 2 nd frame 17 b. Specifically, the carriage main body 97 is provided with a guide roller 94, a driven roller 95, and a drive roller 96. The guide roller 94 is rotatably provided in a state of being engaged with a groove provided in the upper rail 18 a. The driven roller 95 is provided rotatably in contact with the upper rail 18a from the front side. The drive roller 96 is provided rotatably in a state of abutting on the lower rail 18b from the front side. The drive roller 96 is rotated by a drive unit 98 as a drive motor mounted on the carriage main body 97. The control unit controls the operations of the yarn joining unit 91, the upstream yarn feeding unit 92, the downstream yarn feeding unit 93, and the driving unit 98.

The yarn joining section 91 is a splicing device that splices the yarn Y from the spinning device 3 and the yarn Y from the package P by a swirling air flow in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b. However, the yarn joining section 91 is not limited to the splicer, and may be a mechanical knotter or the like, for example.

The yarn joining section 91 is attached to the carriage main body 97 so as to be movable forward and backward with respect to the movement path of the yarn Y in the 1 st spinning unit 1a and so as to be movable forward and backward with respect to the movement path of the yarn Y in the 2 nd spinning unit 1 b. When the yarn joining device 90 is located at the 1 st yarn joining position SP1, the yarn joining section 91 moves on or near the path of movement of the yarn Y in the 1 st spinning unit 1a, and the yarn joining is performed in the 1 st spinning unit 1 a. When the yarn joining device 90 is located at the 2 nd yarn joining position SP2, the yarn joining section 91 moves on or near the path of movement of the yarn Y in the 2 nd spinning unit 1b, and the yarn joining is performed in the 2 nd spinning unit 1 b. When the yarn joining device 90 is located at the 1 st standby position WP1 (the position indicated by the two-dot chain line in fig. 2), when the yarn joining device 90 is located at the 2 nd standby position WP2 (the position indicated by the two-dot chain line in fig. 3), and when the yarn joining device 90 moves in the predetermined direction D, the yarn joining section 91 is held at a position retreated from the position on or near the moving path of the yarn Y in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b.

When the yarn joining section 91 performs yarn joining in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b, the upstream yarn feeding section 92 feeds the yarn Y from the spinning device 3 to the yarn joining section 91. The upstream yarn feeding portion 92 is formed in a tubular shape, and is attached to the carriage main body 97 so as to be rotatable upward and downward with the base end portion 92a as a center. The upstream yarn feeding section 92 rotates downward with the base end section 92a as the center, so that the tip end section 92b is positioned in the vicinity of the downstream side of the delivery roller 7 and the grip roller 8, and captures the yarn Y from the spinning device 3 by the suction air flow. The upstream yarn feeding portion 92 rotates upward with the base end portion 92a as a center, and feeds the yarn Y from the spinning device 3 to the yarn joining portion 91. When the yarn Y from the spinning device 3 is caught and conveyed by the upstream yarn conveying section 92, the delivery roller 7 may be brought into contact with the grip roller 8, or the delivery roller 7 may be separated from the grip roller 8.

When the yarn joining section 91 joins the yarn in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b, the downstream side yarn feeding section 93 feeds the yarn Y from the package P to the yarn joining section 91. The downstream yarn feeding portion 93 is formed in a tubular shape, and is attached to the carriage main body 97 so as to be rotatable upward and downward with the base end portion 93a as a center. The downstream yarn feeding section 93 rotates the base end section 93a upward with the center thereof being set, so that the tip end section 93b is positioned in the vicinity of the upstream side of the winding device 4, and captures the yarn Y from the package P by the suction air flow. The downstream yarn feeding portion 93 feeds the yarn Y from the package P to the yarn joining portion 91 by rotating the base end portion 93a downward with respect to the center. The yarn joining section 91, the upstream yarn feeding section 92, and the downstream yarn feeding section 93 may be driven by a single drive motor.

The yarn joining section 91 is advanced and retreated with respect to the movement path of the yarn Y by a drive motor (not shown). The upstream yarn feeding unit 92 and the downstream yarn feeding unit 93 are coupled to each other by a coupling mechanism such as a cam, and the upstream yarn feeding unit 92 and the downstream yarn feeding unit 93 are rotated upward and downward by a drive motor (not shown) provided in common to the upstream yarn feeding unit 92 and the downstream yarn feeding unit 93. The drive motors may be provided for the upstream yarn feeding section 92 and the downstream yarn feeding section 93, respectively.

The upstream yarn feeding section 92 and the downstream yarn feeding section 93 are connected to the suction duct 19, and thereby a suction air flow is generated in the upstream yarn feeding section 92 and the downstream yarn feeding section 93 (see fig. 1). The suction duct 19 extends in all the spinning units 1 along a pair of

rails

18a, 18 b. A shutter (not shown) is provided in the suction duct 19 so as to correspond to each spinning unit 1. Only when the yarn joining device 90 is located at the 1 st yarn joining position SP1, the shutter provided corresponding to the 1 st spinning unit 1a is opened, and the suction duct 19 is connected to the suction connecting portion provided in the yarn joining device 90. Thereby, the suction air flow flows from the upstream yarn feeding section 92 and the downstream yarn feeding section 93 toward the suction duct 19. Only when the yarn joining device 90 is located at the 2 nd yarn joining position SP2, the shutter provided corresponding to the 2 nd spinning unit 1b is opened, and the suction duct 19 is connected to the suction connecting portion provided in the yarn joining device 90. Thereby, the suction air flow flows from the upstream yarn feeding section 92 and the downstream yarn feeding section 93 toward the suction duct 19.

An air duct (not shown) branched from an injection duct (not shown) through which the compressed air flows is connected to the yarn joining section 91, thereby generating an injection air flow in the yarn joining section 91. The injection duct extends along a pair of

rails

18a, 18b in all the spinning units 1. When the yarn joining section 91 performs the yarn joining operation, the air duct is connected to an unillustrated solenoid valve provided in the yarn joining device 90. By switching the electromagnetic valve from closed to open at an appropriate timing, the yarn joining section 91 can inject an air flow for yarn joining.

Instead of the above configuration, a shutter (not shown) may be provided in the injection duct so as to correspond to each spinning unit 1. Only when the yarn joining device 90 is located at the 1 st yarn joining position SP1, the shutter provided corresponding to the 1 st spinning unit 1a is opened, and the injection duct is connected to the injection connecting portion provided in the yarn joining device 90. Thereby, the jet air flow flows from the jet duct toward the yarn joining section 91. Only when the yarn joining device 90 is located at the 2 nd yarn joining position SP2, the shutter provided corresponding to the 2 nd spinning unit 1b is opened, and the injection duct is connected to the injection connecting portion provided in the yarn joining device 90. Thereby, the jet air flow flows from the jet duct toward the yarn joining section 91.

A carriage main body 97 of the yarn joining device 90 is provided with a valve that opens and closes a flow path of an air flow generated in the yarn joining section 91. However, a valve for opening and closing a flow path of the air flow generated in each of the upstream yarn feeding unit 92 and the downstream yarn feeding unit 93 and a regulator for adjusting the pressure of the air flow generated in each of the yarn joining unit 91, the upstream yarn feeding unit 92, and the downstream yarn feeding unit 93 are not mounted on the carriage main body 97. A regulator (not shown) for adjusting the pressure of air required for the yarn joining device 90 is provided on the machine base side (for example, in the prime mover housing) in common to the plurality of yarn joining devices 90 provided in the spinning machine 10. This realizes downsizing of the carriage main body 97. When the upstream yarn feeding unit 92 generates an air flow for twisting in addition to the suction air flow, a valve for opening and closing a flow path of the air flow generated in the upstream yarn feeding unit 92 may be mounted on the carriage main body 97.

As shown in fig. 1, the yarn monitoring device 6 monitors the thickness of the moving yarn Y by an optical sensor. When detecting a yarn defect of the yarn Y (a position where an abnormality occurs in the thickness of the yarn Y or the like), the yarn monitoring device 6 transmits a yarn defect detection signal to the unit controller. Upon receiving the yarn defect detection signal, the unit controller operates the cutter 14 disposed in the vicinity of the upstream side of the yarn monitoring device 6, and causes the cutter 14 to cut the yarn Y. The yarn monitoring device 6 is not limited to an optical sensor, and may be, for example, a capacitance sensor. The yarn monitoring device 6 may detect foreign matter contained in the yarn Y. Instead of providing the cutter 14 separately from the yarn monitoring device 6, the yarn monitoring device 6 may also include a cutter. The cutter 14 may be omitted, and the yarn Y may be cut by stopping the spinning operation of the spinning device 3.

The winding device 4 winds the yarn Y generated by the spinning device 3 to form a package P. The winding device 4 includes a swing arm 41, a winding drum 42, and a yarn drawing device 43.

The swing arm 41 supports a winding tube T for winding the yarn Y so as to be rotatable. The rocker arm 41 is provided to be rotatable about the base end portion as a center upward and downward, and is biased to rotate about the base end portion as a center downward. Thus, even if the yarn Y is wound around the winding tube T and the diameter of the package P gradually increases, the cradle arm 41 can bring the package P into contact with the winding drum 42 with an appropriate pressure.

The winding drum 42 rotates while being in contact with the outer peripheral surface of the winding tube T or the package P by transmitting the driving force of a driving motor (not shown). A traverse groove for traversing the yarn Y by a predetermined width is formed on the outer peripheral surface of the winding drum 42. Thus, the winding device 4 can wind the yarn Y around the winding tube T while traversing the yarn Y to form the package P. In the present embodiment, a drive motor for rotating the winding drum 42 is provided for each spinning unit 1. Therefore, when the yarn Y of the package P is drawn out by the spinning unit 1 requiring yarn splicing or the like, the winding drum 42 can be independently operated to rotate the package P in the reverse direction.

The yarn drawing device 43 is disposed in the vicinity of the upstream side of the winding drum 42. A 4 th guide 16 is disposed in the vicinity of the upstream side of the yarn pullout device 43. The yarn drawing device 43 generates an air flow so as to flow downward along the outer peripheral surface of the package P when performing yarn splicing or the like. Thus, the yarn drawer device 43 can draw the yarn Y of the package P from the package P and guide the yarn Y to the 4 th guide 16. The downstream yarn feeding portion 93 rotates upward with the base end portion 93a as the center, and thereby the tip end portion 93b is positioned in the vicinity of the upstream side of the 4 th guide 16. The downstream yarn feeding section 93 can capture the yarn Y from the package P by the suction airflow.

Next, the yarn joining operation performed in the spinning machine 10 will be described focusing on the pair of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b.

When the yarn Y is broken in the 1 st spinning unit 1a (specifically, when the yarn Y is broken during winding of the package P or when the cutter 14 cuts the yarn Y), the yarn joining device 90 moves to the 1 st yarn joining position SP1 of the 1 st spinning unit 1a and stops as shown in fig. 2. At this time, as shown in fig. 4, the winding operation of the package P by the winding device 4, the draft operation by the draft device 2, and the spinning operation by the spinning device 3 are stopped, and the 1 st guide 11 and the 2 nd guide 12 are moved from the vicinity of the yarn accumulating device 5 to above the delivery roller 7 and the grip roller 8. In the yarn joining device 90, the yarn joining section 91 moves on or near the path of movement of the yarn Y in the 1 st spinning unit 1 a.

Next, the downstream yarn feeding section 93 rotates upward, and catches the yarn Y from the package P drawn out by the yarn drawing device 43 and guided to the 4 th guide 16. Then, as shown in fig. 5, the downstream yarn feeding section 93 rotates downward and feeds the yarn Y from the package P to the yarn joining section 91. At this time, the package P is reversely rotated by the winding drum 42. Next, as shown in fig. 4, the upstream yarn feeding section 92 rotates downward and moves to a position where the yarn Y from the spinning device 3 is caught. Then, the draft operation of the draft device 2 and the spinning operation of the spinning device 3 are restarted, and the yarn Y spun from the spinning device 3 is caught by the upstream yarn conveying section 92. Subsequently, as shown in fig. 5, the upstream yarn feeding section 92 turns upward and feeds the yarn Y from the spinning device 3 to the yarn joining section 91. Further, the yarn Y from the spinning device 3 may be caught and conveyed by the upstream yarn conveying section 92 first, and then the yarn Y from the package P may be caught and conveyed by the downstream yarn conveying section 93.

Next, as shown in fig. 6, the 1 st guide 11 moves to the vicinity of the upstream side of the yarn accumulating device 5 while catching the yarn Y from the spinning device 3. Next, as shown in fig. 7, the 2 nd guide 12 moves to the vicinity of the downstream side of the yarn accumulating device 5 while catching the yarn Y from the spinning device 3. Then, the yarn joining section 91 performs yarn joining. This allows the yarn Y to be hooked on the yarn guide hook member 53 of the yarn accumulating device 5 and accumulated on the yarn accumulating roller 51, thereby eliminating slack of the yarn Y occurring during the yarn joining.

When the yarn joining by the yarn joining section 91 is completed, the winding operation of the package P by the winding device 4 is restarted. Then, as shown in fig. 2, the yarn joining device 90 moves to the 1 st standby position WP1 close to the 1 st yarn joining position SP1 of the 1 st spinning unit 1a and stops.

When the yarn Y is broken in the 2 nd spinning unit 1b, as shown in fig. 3, the yarn joining device 90 moves to and stops at the 2 nd yarn joining position SP2 of the 2 nd spinning unit 1b, and performs a yarn joining operation in the 2 nd spinning unit 1b in the same manner as described above. When the yarn splicing operation is completed, the yarn splicing device 90 moves to the 2 nd standby position WP2 close to the 2 nd yarn splicing position SP2 of the 2 nd spinning unit 1b and stops. Thus, the yarn joining device 90 does not wait at the center position that bisects the 1 st yarn joining position SP1 and the 2 nd yarn joining position SP 2. The standby position of the yarn joining device 90 is a position shifted from the center position toward the yarn joining position where the yarn joining operation is performed. Accordingly, when the yarn splicing operation is required in both the 1 st spinning unit 1a and the 2 nd spinning unit 1b, the yarn splicing operation can be efficiently performed by moving from the standby position to the close yarn splicing position at that time.

As described above, in the spinning machine 10, the yarn joining device 90 is provided in common only for the 1 st spinning unit 1a and the 2 nd spinning unit 1 b. Therefore, even if the number of times of yarn splicing in each spinning unit 1 is small, the number of the yarn splicing devices 90 required for yarn splicing is less likely to become excessive than in the case where the yarn splicing devices 90 are provided for each spinning unit 1. Even if the number of times of yarn splicing is large in each spinning unit 1, the number of the yarn splicing devices 90 required for yarn splicing is less than that in the case where the yarn splicing devices 90 are provided in common for 20 or more and 40 or less spinning units 1 (that is, the waiting time from the time when yarn splicing is required to the time when yarn splicing starts is shortened). Therefore, according to the spinning machine 10, both the reduction of the cost efficiency and the reduction of the productivity of the package P can be suppressed.

In the spinning machine 10, since the movement distance of each yarn joining device 90 is shortened, the rigidity of the carriage body 97 can be appropriately suppressed, and the

rollers

94, 95, 96 and the driving section 98 can be downsized. This makes it possible to make the yarn joining device 90 lightweight, to extend the life of the components constituting the yarn joining device 90, to facilitate attachment and detachment of the yarn joining device 90 to and from the pair of

rails

18a and 18b, and to improve maintainability. In the spinning machine 10, since the movement distance of each yarn joining device 90 is shortened, the selection range of the driving unit 98 is also expanded. For example, an actuator such as an air cylinder may be used as the driving unit 98 instead of the driving motor.

In the spinning machine 10, the yarn joining device 90 is provided movably in the prescribed direction D in the region between the 1 st frame 17a and the 2 nd frame 17b, and movement beyond the region between the 1 st frame 17a and the 2 nd frame 17b is restricted. Thus, the 1 st spinning unit 1a and the 2 nd spinning unit 1b can share the yarn joining device 90 with a simple configuration. In addition, since it is not necessary to provide a dedicated space for moving the yarn joining device 90, the degree of freedom of layout of the spinning machine 10 can be increased. Further, it is not necessary to provide openings for passing the yarn joining device 90 in the 1 st frame 17a and the 2 nd frame 17 b. Therefore, for example, compared with the case where the opening is provided, sufficient rigidity of the 1 st frame 17a and the 2 nd frame 17b can be ensured with less material.

In the spinning machine 10, the width W1 of the yarn joining device 90 in the predetermined direction D is equal to or less than the width W2 of each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b in the predetermined direction D. Thus, since the yarn joining device 90 does not go beyond the outside of each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b, the enlargement of the installation space of the spinning machine 10 can be suppressed. Further, two different yarn joining devices 90 can be simultaneously positioned in each of the two 1

st spinning units

1a and 2 nd spinning units 1b arranged adjacently via the frame 17 (the 1 st frame 17a or the 2 nd frame 17b), and the yarn Y can be joined in each of the two 1

st spinning units

1a and 2 nd spinning units 1 b.

In the spinning machine 10, the yarn joining device 90 includes a driving unit 98 for moving the yarn joining device in the predetermined direction D. This makes it possible to easily move the yarn joining device 90 to an appropriate position.

In the spinning machine 10, the yarn joining device 90 has a yarn joining section 91 that performs yarn joining in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b. This enables appropriate yarn splicing to be performed in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b.

In the spinning machine 10, the yarn joining section 91 is provided: the yarn feeding device is movable forward and backward with respect to the movement path of the yarn Y in the 1 st spinning unit 1a, and movable forward and backward with respect to the movement path of the yarn Y in the 2 nd spinning unit 1 b. This allows the yarn joining section 91 to be retracted in advance at a time other than the yarn joining time in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b, thereby preventing interference with the respective members. The yarn joining section 91 can appropriately perform yarn joining on or near the moving path of the yarn Y at the time of yarn joining in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1 b. Further, by retracting the yarn joining section 91 at a time other than the yarn joining time in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b so as not to interfere with the respective members, the degree of freedom of the movement locus of the upstream yarn conveying section 92 and the downstream yarn conveying section 93 can be increased.

In the spinning machine 10, the yarn joining device 90 includes: an upstream yarn feeding section 92 for feeding the yarn Y from the spinning device 3 to the yarn joining section 91 at the time of yarn joining, and a downstream yarn feeding section 93 for feeding the yarn Y from the package P to the yarn joining section 91 at the time of yarn joining. Accordingly, at the time of yarn joining, each of the yarn Y from the spinning device 3 and the yarn Y from the package P can be appropriately fed to the yarn joining section 91.

In the spinning machine 10, the

top rollers

21a, 22a, 23a, 24a of the draft device 2 of the 1 st spinning unit 1a and the

top rollers

21a, 22a, 23a, 24a of the draft device 2 of the 2 nd spinning unit 1b are supported by a draft cradle 26 commonly provided for the 1 st spinning unit 1a and the 2 nd spinning unit 1 b. Thus, the draft cradle 26 is shared by the 1 st spinning unit 1a and the 2 nd spinning unit 1b, and the structure of the spinning machine 10 can be simplified.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, the width W1 of the yarn joining device 90 in the predetermined direction D may exceed the width W2 of each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b in the predetermined direction D. In this case, the yarn joining device 90 can also perform yarn joining in each of the 1 st spinning unit 1a and the 2 nd spinning unit 1b by providing an opening (an opening in which at least a part of the yarn joining device 90 can be disposed) in each of the 1 st frame 17a and the 2 nd frame 17b, or providing a space in each of between the 1 st spinning unit 1a and the 1 st frame 17a and between the 2 nd spinning unit 1b and the 2 nd frame 17 b.

As the downstream yarn feeding section 93, a suction port provided with a long suction port having a length corresponding to the length of the package P may be used. In this case, the yarn pullout device 43 and the 4 th guide 16 are not required. At least one of the upstream yarn feeding section 92 and the downstream yarn feeding section 93 may be provided in the spinning unit 1. In this case, the weight of the yarn joining device 90 can be further reduced.

The yarn joining section 91 is not limited to be movable forward and backward with respect to the movement path of the yarn Y, and may be fixed at a position where the yarn can be joined in the yarn joining device 90. The yarn joining device 90 may be provided with a mechanism for operating the 1 st guide 11 and the 2 nd guide 12. The yarn splicing device 90 may be provided with a structure necessary for the yarn splicing operation. A draft cradle 26 may also be provided in each spinning unit 1.

The yarn winding machine of the present invention is not limited to a spinning machine, and may be another yarn winding machine such as an automatic winder. The 1 st and 2 nd yarn winding units of the present invention are not limited to the spinning unit, and may be other yarn winding units such as a winder unit. The 1 st and 2 nd yarn winding units of the present invention may be members that move the yarn from the upper side to the lower side in the height direction of the spinning machine 10.

Claims

1. A yarn winding machine, comprising:

a plurality of yarn winding units that are disposed adjacent to each other in a predetermined direction, the yarn winding units winding a yarn to form a package;

a yarn joining device that is provided so as to be movable in the predetermined direction in common to the plurality of yarn winding units, and that performs yarn joining in each of the plurality of yarn winding units;

a suction duct extending in the plurality of yarn winding units,

the yarn splicing device has a suction connecting part connected to the suction pipe,

when the yarn joining device is located at a yarn joining position, the shutter is opened, whereby the suction connecting portion and the suction duct are connected,

when the yarn joining by the yarn joining device is completed, the yarn joining device moves to a standby position in the predetermined direction and stops.

2. The yarn winding machine of claim 1,

each of the yarn winding units includes a winding device that winds a yarn to form a package,

when the yarn joining by the yarn joining device is completed, the winding of the package by the winding device is resumed, and then the yarn joining device is moved to the standby position in the predetermined direction and stopped.

3. The yarn winding machine of claim 1,

the standby position of the yarn joining device is a position shifted from a center position that bisects the 1 st and 2 nd yarn joining positions to a yarn joining position at which the yarn joining is performed.

4. The yarn winding machine of claim 2,

5. The yarn winding machine according to any one of claims 1 to 4,

each of the yarn winding units includes a spinning device that spins a fiber bundle to generate a yarn,

the yarn joining device includes a yarn joining section that joins a yarn from the spinning device and a yarn from the package,

the yarn joining section is provided to be capable of advancing and retreating with respect to a moving path of the yarn in the yarn winding unit,

the yarn joining section advances on or near a yarn moving path of the yarn winding unit when the yarn joining device is located at the yarn joining position, and a yarn is joined in the yarn winding unit,

when the yarn joining device is located at the standby position and when the yarn joining device moves in a predetermined direction, the yarn joining section retreats from the yarn moving path of the yarn winding unit or from the vicinity of the yarn moving path.