CN104444576B - Yarn Winder - Google Patents

Abstract

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 Winder

technical field

The present invention relates to yarn winding machines.

Background technique

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 the yarn on the supply side and the yarn on the package side when, for example, the yarn is cut to remove a yarn defect or the like. The yarn joining device may be provided for each yarn winding unit, or may be shared with 20 or more and 40 or less yarn winding units. In the case where the yarn joining device is shared with a plurality of yarn winding units, the yarn joining device is configured to be movable relative to more than 20 and less than 40 yarn winding units (for example, refer to Japanese Patent Laid-Open No. 2005-330596 Bulletin).

Contents of the invention

The problem 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 yarn splicings in each yarn winding unit is small, the number of yarn splicing devices required for yarn splicing becomes excessive, and the cost-effectiveness decreases. In the case where one yarn splicing device is shared with more than 20 and less than 40 yarn winding units, when the number of yarn splicing in each yarn winding unit is large, the number of yarn splicing devices required for yarn splicing Insufficient, the productivity of the package is reduced.

An object of the present invention is to provide a yarn winding machine capable of suppressing both a reduction in cost efficiency and a reduction in package productivity.

means of solving problems

The yarn winding machine of the present invention includes: a first yarn winding unit for winding the first yarn to form a first package; a second yarn winding unit for winding the first yarn along a predetermined direction The winding unit is arranged in an adjacent manner, and the second yarn is wound to form the second package; and the yarn joining device is only shared with the first yarn winding unit and the second yarn winding unit, and is installed on the first yarn winding unit. Yarn splicing is performed in each of the yarn winding unit and the second yarn winding unit.

In this yarn winding machine, the yarn joining device is shared with only the first yarn winding unit and the second 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 less likely to become excessive compared with the case where one yarn splicing device is provided in one yarn winding unit. In addition, even if the number of times of yarn splicing in each yarn winding unit is large, compared with the case where one yarn splicing device is installed in common with 20 or more and 40 or less yarn winding units, the yarn splicing required for yarn splicing The number of devices is hardly insufficient. Therefore, according to this yarn winding machine, it is possible to suppress both a decrease in cost efficiency and a decrease in package productivity.

In the yarn winding machine of the present invention, the yarn joining device may be installed so that it can move between the first yarn joining position in the first yarn winding unit and the position in the second yarn winding unit along a predetermined direction. Move between the 2nd yarn splicing position. In this case, the first yarn winding unit and the second yarn winding unit can share the yarn joining device with a simple structure.

In the yarn winding machine of the present invention, the movement of the yarn joining device beyond the region opposite to the second yarn winding unit in the first yarn winding unit may be restricted. An area between one end and an end of the second yarn winding unit opposite to the first yarn winding unit. In this case, since the moving distance of the yarn joining device is shortened, the waiting time for yarn joining in each yarn winding unit can be shortened.

Alternatively, the yarn winding machine of the present invention may further include: a first frame arranged along an end of the first yarn winding unit opposite to the second yarn winding unit and supporting at least the first yarn winding unit. a part of the yarn winding unit; and a second frame disposed along an end of the second yarn winding unit opposite to the first yarn winding unit and supporting at least the second yarn winding unit A part of the yarn splicing device is configured to be movable along a predetermined direction in an area between the first frame and the second frame, and the movement beyond the area between the first frame and the second frame is restricted. In this case, since there is no need to provide a dedicated space for moving the yarn joining device, the degree of freedom in the layout of the yarn winding machine can be increased. Furthermore, since there is no need to provide an opening through which the yarn joining device passes through the first frame and the second frame, sufficient rigidity of the first frame and the second frame can be ensured with less material than, for example, the case where such an opening is provided.

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 first yarn winding unit and the second yarn winding unit in the predetermined direction. . In this case, since the yarn joining device does not protrude beyond each of the first yarn winding unit and the second yarn winding unit, expansion of the installation space of the yarn winding machine can be suppressed.

In the yarn winding machine of the present invention, the yarn joining device may have a drive unit for moving in a predetermined direction. In this case, the yarn joining device can be easily moved to an appropriate position.

In the yarn winding machine according to the present invention, the yarn joining device may include a yarn joining unit which joins the first yarn and also joins the second yarn. In this case, each of the first yarn and the second yarn can be spliced appropriately.

In the yarn winding machine of the present invention, the yarn joining section may advance and retreat with respect to the moving path of the first yarn in the first yarn winding unit, and may move forward and backward with respect to the movement path of the first yarn in the second yarn winding unit. The movement path of the second yarn advances and retreats. In this case, at times other than the yarn joining time of the first yarn and the yarn joining time of the second yarn, the yarn joining part is retracted so as not to interfere with each component, and the yarn joining time of the first yarn and the second yarn The yarn joining time of the yarn can be suitably performed on the moving path of each of the first yarn and the second yarn or in the vicinity of each moving path.

In the yarn winding machine of the present invention, the yarn joining device may further include a yarn delivery unit that delivers the first yarn to the yarn joining unit when joining the first yarn. When the second yarn is spliced, the second yarn is fed to the yarn splicing section. In this case, each of the first yarn and the second yarn can be appropriately fed to the yarn joining section at the time of joining the first yarn and the time of joining the second yarn.

In the yarn winding machine of the present invention, the first yarn winding unit may include: a first drafting device for generating a first fiber bundle; A fiber bundle is spun to generate a first yarn; and a first winding device winds the first yarn to form a first package, and the second yarn winding unit has: a second drafting device, generating a second fiber bundle; a second spinning device that spins the second fiber bundle with a swirling air flow to generate a second yarn; and a second winding device that winds the second yarn to form In the second package, the top rollers of the first drafting device and the top rollers of the second drafting device are supported by a drafting cradle provided in common with the first yarn winding unit and the second yarn winding unit. Also in this case, since the draft cradle is shared by the first yarn winding unit and the second yarn winding unit, the structure of the yarn winding machine can be simplified.

Description of 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 during the yarn splicing operation in the spinning machine of Fig. 1 .

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

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

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

Detailed ways

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In addition, in each figure, the same or equivalent part is attached|subjected with the same code|symbol, and redundant description is abbreviate|omitted.

As shown in FIGS. 1 , 2 and 3 , a spinning machine (yarn winding machine) 10 includes a plurality of spinning units 1 and a machine control device (not shown). A plurality of spinning units 1 are arranged adjacent to each other along a predetermined direction D. As shown in FIG. The machine control device centrally manages each spinning unit 1 . In Fig. 2 and Fig. 3, only a pair of first spinning units (first yarn winding units) 1a and a pair of first spinning units (first yarn winding units) 1a and 1st spinning units arranged adjacent to each other along a predetermined direction D among the plurality of spinning units 1 are shown. 2 spinning unit (second yarn winding unit) 1b. However, actually, a plurality of pairs of the first spinning unit 1a and the second spinning unit 1b are arranged side by side along the predetermined direction D with the frame 17 interposed therebetween. In this embodiment, the first spinning unit 1a and the second spinning unit 1b are collectively referred to as spinning unit 1 . In addition, in Fig. 2 and Fig. 3 , a part of the structure of each of the first spinning unit 1a and the second spinning unit 1b is omitted.

As shown in Fig. 1, the spinning unit 1 uses the spinning device (the first spinning device, the second spinning device) 3 to send from the drafting device (the first drafting device, the second drafting device) 2. Fiber bundles (first fiber bundles, second fiber bundles) F are spun to produce yarns (first yarns, second yarns) Y, and the winding devices (first winding device, second winding device) ) 4 to form a package (first package, second package) P by winding the produced yarn Y. In this embodiment, the upstream in the moving direction of the yarn Y is simply referred to as upstream, and the downstream in the moving direction of the yarn Y is simply referred to as 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 . A pair of the first spinning unit 1a and the second spinning unit 1b share one yarn joining device 90 (see FIGS. 2 and 3 ). The yarn joining device 90 is located at a yarn joining position (details will be described later) in each of the first spinning unit 1a and the second spinning unit 1b, and performs yarn joining.

The drafting device 2 has four pairs of drafting rollers 21, 22, 23, and 24. The four pairs of drafting rollers 21, 22, 23, and 24 are rear rollers in order from the upstream side along the moving path of the yarn Y. Right, third roller pair, middle roller pair, front roller pair. The draft roller pair 21 is composed of 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 middle roller pair. The drafting device 2 conveys the sliver S supplied from the sliver bobbin while pinching it with four pairs of drafting rollers 21 , 22 , 23 , and 24 to stretch the sliver S to generate a fiber bundle F. As shown in Figure 2 and Figure 3, the top rollers 21a, 22a, 23a, 24a of the draft device 2 of the first spinning unit 1a and the top rollers 21a, 22a, 23a of the draft device 2 of the second spinning unit 1b , 24a is supported by the draft cradle 26 provided in common with the first spinning unit 1a and the second spinning unit 1b.

As shown in FIG. 1 , the spinning device 3 spins the fiber bundle F produced by the draft device 2 with a swirling air flow to produce a yarn Y. Specifically (not shown), the spinning device 3 includes a fiber guide, a swirling flow generating nozzle, and a hollow guide shaft. The fiber guide section guides the fiber bundle F sent from the draft device 2 to the 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. As a result, the fiber ends are reversed and twirled 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 produced in the spinning device 3 is nipped by the delivery roller 7 and the grip roller 8 and sent out toward the yarn accumulating device 5 . In addition, the delivery roller 7 and the grip roller 8 may be omitted, and the yarn Y may be pulled 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 member 53 . The motor 52 is driven to rotate the yarn accumulating roller 51 . The yarn guide member 53 winds the yarn Y around the yarn accumulating roller 51 . The yarn accumulating device 5 temporarily stores the yarn Y by winding the yarn Y around the yarn accumulating roller 51 . In addition, in the spinning unit 1, the direction of the moving path of the yarn Y is largely changed between the upstream side and the downstream side of the yarn accumulating device 5. Specifically, on the upstream side of the yarn accumulating device 5, the yarn Y is moved substantially horizontally from the front side toward the yarn accumulating device 5, and on the downstream side of the yarn accumulating device 5, the yarn Y is moved from the yarn accumulating The wire accumulating device 5 moves obliquely toward the front side and the upper side. In this embodiment, with respect to the spinning machine 10, the side having the passage for the operator 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 guide hook member 53 is supported so as 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 yarn guide member 53, and a hysteresis is attached to the other. The torque against the relative rotation of the yarn guide hook member 53 with respect to the yarn accumulating roller 51 is generated by these magnetic mechanisms. Therefore, only when a force exceeding this torque is applied to the yarn guide member 53 (when a tension equal to or greater than a predetermined value is applied to the yarn Y), the yarn guide member 53 is relatively stable against the yarn accumulating roller 51. The relative rotation causes the yarn Y wound on the yarn accumulating roller 51 to be unwound. When a force exceeding this torque is not applied to the yarn guide member 53, the yarn guide 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, when the tension of the yarn Y on the downstream side of the yarn accumulating device 5 increases, the yarn accumulating device 5 unwinds the yarn Y, and when the tension of the yarn Y on the downstream side of the yarn accumulating device 5 decreases ( When the yarn Y seems to be slack soon) The yarn accumulating device 5 stores the yarn Y. Thereby, the yarn accumulating device 5 can eliminate the slack of the yarn Y and apply an appropriate tension to the yarn Y. Furthermore, the yarn accumulating device 5 can absorb the tension fluctuation of the yarn Y on the downstream side of the yarn accumulating device 5 and prevent the tension fluctuation from affecting the movement of the yarn Y on the upstream side of the yarn accumulating device 5 .

A first guide 11 is disposed near the upstream side of the yarn accumulating device 5 . The first guide 11 guides the yarn Y to the yarn accumulating device 5 . A pair of second guide 12 and third guide 13 are disposed near the downstream side of the yarn accumulating device 5 . The second guide 12 and the third guide 13 stabilize the movement of the yarn Y unwound from the yarn accumulating device 5 . The first guide 11 and the second guide 12 are movable in order to draw the yarn Y close to the yarn accumulating device 5 when performing yarn splicing or the like.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , one yarn joining device 90 is shared with only a pair of first spinning unit 1 a and second spinning unit 1 b. The yarn joining device 90 joins the yarn Y in each of the first spinning unit 1a and the second spinning unit 1b. That is, when the yarn Y is in a broken state between the spinning device 3 and the package P for some reason in the first spinning unit 1a, the first splicing device 90 in the first spinning unit 1a The yarn position SP1 (the position indicated by the solid line in FIG. 2 ) connects the yarn Y from the spinning device 3 and the yarn Y from the package P. As shown in FIG. When the yarn Y is broken between the spinning device 3 and the package P for some reason in the second spinning unit 1b, the second yarn joining position of the yarn joining device 90 in the second spinning unit 1b SP2 (the position shown by the solid line in FIG. 3 ) connects the yarn Y from the spinning device 3 and the yarn Y from the package P. As shown in FIG.

The yarn joining device 90 is provided movable along a predetermined direction D in an area between the first frame 17a and the second frame 17b, and movement beyond the area between the first frame 17a and the second frame 17b is restricted. The first frame 17a is erected along the end of the first spinning unit 1a opposite to the second spinning unit 1b, and supports at least a part of the first spinning unit 1a (winding device 4, etc.). The second frame 17b is erected along the end of the second spinning unit 1b opposite to the first spinning unit 1a, and supports at least a part of the second spinning unit 1b (winding device 4, etc.).

In other words, the yarn joining device 90 can connect the end of the first spinning unit 1a opposite to the second spinning unit 1b and the end of the second spinning unit 1b to the first spinning unit 1a along the predetermined direction D. The area between the ends on the opposite side is shifted. However, the yarn joining device 90 extends beyond the end of the first spinning unit 1a on the opposite side to the second spinning unit 1b and the end of the second spinning unit 1b on the opposite side to the first spinning unit 1a. Movement between areas is restricted. The reason why the yarn splicing device 90 can move along the predetermined direction D between the first yarn splicing position SP1 of the first spinning unit 1a and the second yarn splicing position SP2 of the second spinning unit 1b is that: The width W1 of the yarn device 90 is equal to or smaller than the width W2 of each of the first spinning unit 1a and the second spinning unit 1b in the predetermined direction D. In addition, the width W1 of the yarn joining device 90 in the predetermined direction D is, for example, not less than 210 mm and not more than 260 mm. The width W2 of each of the first spinning unit 1a and the second spinning unit 1b in the predetermined direction D is, for example, not less than 215 mm and not more than 270 mm.

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

The yarn joining device 90 has a yarn joining unit 91, an upstream side yarn delivery unit (yarn delivery unit) 92, a downstream side yarn delivery unit (yarn delivery unit) 93, a carriage main body 97, a driving unit 98, and a control unit ( not shown). The carriage main body 97 is movable along a pair of rails 18a, 18b spanned between the first frame 17a and the second frame 17b. Specifically, a guide roller 94 , a driven roller 95 , and a drive roller 96 are provided on the carriage main body 97 . The guide roller 94 is provided rotatably while being engaged with a groove provided in the upper rail 18a. The driven roller 95 is provided rotatably in a state of being in contact with the upper rail 18a from the front. The driving roller 96 is provided rotatably in a state of being in contact with the lower rail 18b from the front side. The drive roller 96 is rotated by a drive unit 98 serving 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 delivery unit 92 , the downstream yarn delivery unit 93 , and the drive unit 98 .

The yarn splicing section 91 is performed by twisting the yarn Y from the spinning device 3 and the yarn Y from the package P by using swirling air flow in each of the first spinning unit 1a and the second spinning unit 1b. Splicing device for yarn joining. However, the yarn splicing unit 91 is not limited to a splicing device, and may be, for example, a mechanical knotter or the like.

The yarn joining unit 91 is attached to the yarn so that it can advance and retreat with respect to the moving path of the yarn Y in the first spinning unit 1a, and can advance and retreat with respect to the moving path of the yarn Y in the second spinning unit 1b. Carriage main body 97 . When the yarn splicing device 90 is located at the first yarn splicing position SP1, the yarn splicing section 91 advances on or near the moving path of the yarn Y in the first spinning unit 1a, Yarn splicing is performed in 1a. When the yarn splicing device 90 is located at the second yarn splicing position SP2, the yarn splicing section 91 advances on or near the moving path of the yarn Y in the second spinning unit 1b, Yarn splicing is carried out in 1b. When the yarn joining device 90 is located at the first standby position WP1 (the position indicated by the double-dashed line in FIG. 2 ), the yarn joining device 90 is located at the second standby position WP2 (the position indicated by the double-dashed line in FIG. 3 ). ) and when the yarn joining device 90 moves along a predetermined direction D, the yarn joining unit 91 is held on the moving path of the yarn Y from each of the first spinning unit 1a and the second spinning unit 1b or the yarn The position to retreat near the Y's movement path.

When yarn joining is performed by the yarn joining unit 91 in each of the first spinning unit 1a and the second spinning unit 1b, the upstream yarn delivery unit 92 transports the yarn Y from the spinning device 3 to the yarn joining unit 91 . The upstream yarn delivery portion 92 has a tubular shape, and is attached to the carriage main body 97 so as to be rotatable upside and downside around the base end portion 92a. The upstream side yarn delivery part 92 rotates the base end part 92a as a center to the downward side so that the front end part 92b is located in the vicinity of the downstream side of the output roller 7 and the grip roller 8, and catches the yarn from the spinning device 3 by the suction air flow. Yarn Y. The upstream yarn feeding section 92 sends the yarn Y from the spinning device 3 to the yarn joining section 91 by rotating upward with the base end section 92a as a center. When the yarn Y from the spinning device 3 is caught and conveyed by the upstream yarn conveyance 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 performs yarn joining in each of the first spinning unit 1a and the second 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 side yarn feeding part 93 is formed in a tubular shape, and is attached to the carriage main body 97 so as to be rotatable upside and downside around the base end part 93a as a center. The downstream side yarn delivery part 93 rotates the base end part 93a as a center upward so that the front end part 93b is located near the upstream side of the winding device 4, and catches the yarn Y from the package P by the suction airflow. The downstream side yarn feeding part 93 sends the yarn Y from the package P to the yarn joining part 91 by rotating the base end part 93a as a center downward. The yarn joining section 91, the upstream side yarn delivery section 92, and the downstream side yarn delivery section 93 may be driven by a single drive motor.

The yarn joining section 91 advances and retreats with respect to the moving path of the yarn Y by a drive motor (not shown). The upstream side yarn delivery part 92 and the downstream side yarn delivery part 93 are connected by a coupling mechanism such as a cam, and a driving motor (not shown) provided in common with the upstream side yarn delivery part 92 and the downstream side yarn delivery part 93 is used. The upstream yarn feeding part 92 and the downstream yarn feeding part 93 are rotated upward and downward. Drive motors may be provided separately for the upstream yarn feeding section 92 and the downstream yarn feeding section 93 .

By connecting the upstream yarn delivery unit 92 and the downstream yarn delivery unit 93 to the suction duct 19, suction air flows are generated in the upstream yarn delivery unit 92 and the downstream yarn delivery unit 93 (see FIG. 1 ). The suction duct 19 extends in all the spinning units 1 along the pair of rails 18a, 18b. Shutters (not shown) are provided in the suction duct 19 so as to correspond to the spinning units 1 . Only when the yarn splicing device 90 is located at the first yarn splicing position SP1, the shutter provided corresponding to the first spinning unit 1a is opened, and the suction duct 19 is connected to the suction connection part provided on the yarn splicing device 90 . As a result, the suction air flow flows from the upstream yarn delivery section 92 and the downstream yarn delivery section 93 toward the suction duct 19 . Only when the yarn splicing device 90 is located at the second yarn splicing position SP2, the shutter provided corresponding to the second spinning unit 1b is opened, and the suction duct 19 is connected to the suction connection part provided on the yarn splicing device 90 . As a result, the suction air flow flows from the upstream yarn delivery section 92 and the downstream yarn delivery section 93 toward the suction duct 19 .

By connecting an air duct (pipe) (not shown) branched from a jetting duct (not shown) through which compressed air flows and the yarn joining unit 91 , jetting air flow is generated in the yarn joining unit 91 . The spraying duct extends through all the spinning units 1 along a pair of rails 18a, 18b. When the yarn splicing unit 91 performs the yarn splicing operation, the air duct is connected to a solenoid valve (not shown) provided in the yarn splicing device 90 . By switching the electromagnetic valve from off to on at an appropriate timing, the yarn splicing section 91 can spray air flow for yarn splicing.

Instead of the above configuration, gates (not shown) may be provided on the jetting ducts corresponding to the spinning units 1 . Only when the yarn splicing device 90 is located at the first yarn splicing position SP1, the shutter provided corresponding to the first spinning unit 1a is opened, and the jetting pipe is connected to the jetting connection part provided on the yarn splicing device 90 . Accordingly, the jet air flow flows from the jet duct toward the yarn splicing portion 91 . Only when the yarn splicing device 90 is located at the second yarn splicing position SP2, the shutter provided corresponding to the second spinning unit 1b is opened, and the jetting pipe is connected to the jetting connection part provided on the yarn splicing device 90 . Accordingly, the jet air flow flows from the jet duct toward the yarn splicing portion 91 .

The carriage main body 97 of the yarn joining device 90 is provided with a valve for opening and closing the flow path of the air flow generated in the yarn joining unit 91 . However, the valve for opening and closing the flow path of the air flow generated in each of the upstream side yarn delivery part 92 and the downstream side yarn delivery part 93 and the valve for adjusting the air flow in the yarn joining part 91, A regulator for the pressure of the air flow generated by each of the upstream yarn delivery section 92 and the downstream yarn delivery section 93 . A regulator (not shown) for adjusting the pressure of air required for the yarn joining device 90 is commonly provided on the machine table side (for example, in the prime mover box) with respect to the plurality of yarn joining devices 90 installed in the spinning machine 10. . Thereby, miniaturization of the carriage main body 97 is achieved. In the case where the upstream side yarn delivery part 92 generates an air flow for twisting in addition to the suction air flow, a device for opening and closing the air flow generated by the upstream side yarn delivery part 92 may also be mounted on the carriage main body 97. flow valve.

As shown in FIG. 1 , the yarn monitoring device 6 monitors the thickness of the moving yarn Y using an optical sensor. The yarn monitoring device 6 transmits a yarn defect detection signal to the unit controller when detecting a yarn defect of the yarn Y (a position where the thickness of the yarn Y is abnormal). When the unit controller receives the yarn defect detection signal, it operates the cutter 14 arranged near the upstream side of the yarn monitoring device 6 to cut the yarn Y with the cutter 14 . In addition, the yarn monitoring device 6 is not limited to an optical sensor, and may be, for example, a capacitive sensor or the like. The yarn monitoring device 6 can also detect foreign matter contained in the yarn Y. The yarn monitoring device 6 may also comprise a knife instead of a knife 14 provided separately from the yarn monitoring device 6 . In addition, the cutter 14 may be omitted, the spinning operation of the spinning device 3 may be stopped, and the yarn Y may be cut.

The winding device 4 forms a package P by winding the yarn Y produced by the spinning device 3 . The winding device 4 has a cradle arm 41 , a winding drum 42 and a yarn withdrawal device 43 .

The cradle arm 41 supports the winding tube T for winding the yarn Y such that the winding tube T is rotatable. The cradle arm 41 is provided so as to be able to rotate upward and downward centering on the base end, and is biased to rotate downward centering on the base end. Accordingly, even if the yarn Y is wound on 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 in contact with the winding tube T or the outer peripheral surface of the package P by transmitting the driving force of a driving motor (not shown). A traversing groove for traversing the yarn Y with a predetermined width is formed on the outer peripheral surface of the winding drum 42 . Thus, the winding device 4 can form the package P by winding the yarn Y around the winding tube T while traversing the yarn Y. In the present embodiment, a drive motor for rotating the winding drum 42 is provided on each spinning unit 1 . Therefore, when the yarn Y of the package P is pulled out in the spinning unit 1 that requires yarn splicing or the like, the winding drum 42 can be operated independently to reversely rotate the package P.

The yarn pulling device 43 is disposed near the upstream side of the winding drum 42 . The fourth guide 16 is disposed near the upstream side of the yarn pulling device 43 . The yarn pulling device 43 generates an air flow so as to flow downward along the outer peripheral surface of the package P during yarn splicing or the like. Thus, the yarn pulling device 43 can pull out the yarn Y of the package P from the package P, and guide the yarn Y to the fourth guide 16 . The downstream side yarn feeding part 93 is rotated upward about the base end part 93a so that the front end part 93b is located in the vicinity of the upstream side of the fourth guide 16 . In addition, the downstream side yarn delivery unit 93 can catch the yarn Y from the package P by the flow of suction air.

Next, the yarn splicing operation performed in the spinning machine 10 will be described focusing on the pair of the first spinning unit 1a and the second spinning unit 1b.

In the case where the yarn Y breaks in the first spinning unit 1a (specifically, when the yarn breaks during the winding of the package P or when the cutter 14 cuts the yarn Y), as shown in FIG. As shown, the yarn splicing device 90 moves to the first yarn splicing position SP1 of the first spinning unit 1a and stops. At this time, as shown in FIG. 4, the winding operation of the package P by the winding device 4, the drafting operation by the drafting device 2, and the spinning operation by the spinning device 3 are stopped. The guide 11 and the second guide 12 move from the vicinity of the yarn accumulating device 5 to above the output roller 7 and the grip roller 8 . In the yarn joining device 90, the yarn joining unit 91 advances on or near the moving path of the yarn Y in the first spinning unit 1a.

Next, the downstream side yarn feeding part 93 rotates upward, and catches the yarn Y from the package P drawn out by the yarn drawing device 43 and guided to the fourth guide 16 . Then, as shown in FIG. 5 , the downstream side yarn feeding part 93 rotates downward to feed the yarn Y from the package P to the yarn joining part 91 . At this time, the package P is reversely rotated by the winding drum 42 . Next, as shown in FIG. 4 , the upstream yarn conveying portion 92 is rotated downward and moved to a position where the yarn Y from the spinning device 3 is caught. Thereafter, the drafting operation of the drafting 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 delivery unit 92 . Then, as shown in FIG. 5 , the upstream side yarn feeding part 92 rotates upward and feeds the yarn Y from the spinning device 3 to the yarn joining part 91 . In addition, the yarn Y from the spinning device 3 may be captured and delivered by the upstream yarn delivery unit 92 first, and the yarn Y from the package P may be caught and delivered by the downstream yarn delivery unit 93 thereafter.

Next, as shown in FIG. 6 , the first guide 11 moves toward 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 second guide 12 moves toward 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. Thereby, the yarn Y can be hooked on the yarn guide hook member 53 of the yarn accumulating device 5, and the yarn Y can be accumulated on the yarn accumulating roller 51, and the yarn Y generated during yarn splicing can be eliminated. Slack in line Y.

When the yarn splicing by the yarn splicing 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 splicing device 90 moves to the first standby position WP1 close to the first yarn splicing position SP1 of the first spinning unit 1a, and stops.

In addition, when the yarn Y breaks in the second spinning unit 1b, as shown in FIG. , the yarn splicing operation is performed in the second spinning unit 1b. Then, when the yarn splicing operation is completed, the yarn splicing device 90 moves to the second standby position WP2 close to the second yarn splicing position SP2 of the second spinning unit 1b, and stops. In this way, the yarn splicing device 90 does not stand by at the center position that bisects the first yarn splicing position SP1 and the second yarn splicing position SP2. The standby position of the yarn joining device 90 is a position shifted from the central position toward the yarn joining position where the yarn joining operation is performed. Thus, when the yarn joining operation needs to be performed in both the first spinning unit 1a and the second spinning unit 1b, it can be efficiently performed by moving from the standby position to the closer yarn joining position at that time. Splicing action.

As described above, in the spinning machine 10, the yarn joining device 90 is provided in common only with the first spinning unit 1a and the second spinning unit 1b. Therefore, even if the number of times of yarn splicing in each spinning unit 1 is small, the number of yarn splicing devices 90 required for yarn splicing is less likely to become excessive compared with the case where a yarn splicing device 90 is provided in each spinning unit 1 . In addition, even if the number of times of yarn splicing in each spinning unit 1 is large, compared with the case where the yarn splicing device 90 is shared with 20 or more and 40 or less spinning units 1, the number of yarn splicing devices 90 required for yarn splicing It is difficult to run out of quantity (that is, shorten the waiting time from the need for yarn splicing to the start of yarn splicing). Therefore, according to the spinning machine 10, it is possible to suppress both a decrease in cost efficiency and a decrease in productivity of the package P.

In the spinning machine 10, since the moving distance of each yarn joining device 90 is shortened, the rigidity of the carriage main body 97 can be moderately suppressed, and the rollers 94, 95, 96 and the drive unit 98 can be downsized. Thereby, the weight of the yarn joining device 90 can be reduced, the life of the components constituting the yarn joining device 90 can be prolonged, and the attachment and detachment of the yarn joining device 90 to the pair of rails 18a, 18b can be facilitated to improve maintainability. In the spinning machine 10, since the moving distance of each yarn joining device 90 is shortened, the selection range of the drive unit 98 is also expanded. For example, instead of a drive motor, an actuator such as an air cylinder may be used as the drive unit 98 .

In the spinning machine 10, the yarn joining device 90 is provided so as to be movable along a predetermined direction D in the area between the first frame 17a and the second frame 17b, and beyond the area between the first frame 17a and the second frame 17b. movement is restricted. Thereby, the yarn joining device 90 can be shared by the first spinning unit 1a and the second spinning unit 1b with a simple structure. In addition, since there is no need to provide a dedicated space for moving the yarn joining device 90, the degree of freedom in the layout of the spinning machine 10 can be increased. Furthermore, there is no need to provide openings through which the yarn joining device 90 passes in the first frame 17a and the second frame 17b. Therefore, sufficient rigidity of the first frame 17a and the second frame 17b can be ensured with less material than, for example, the case where the opening is provided.

In the spinning machine 10, the width W1 of the yarn joining device 90 in the predetermined direction D is equal to or smaller than the width W2 of each of the first spinning unit 1a and the second spinning unit 1b in the predetermined direction D. Accordingly, since the yarn joining device 90 does not protrude beyond each of the first spinning unit 1a and the second spinning unit 1b, expansion of the installation space of the spinning machine 10 can be suppressed. In addition, two different yarn joining devices 90 can be positioned at the same time in the two first spinning units 1a and the second spinning unit 1a that are adjacent to each other across the frame 17 (the first frame 17a or the second frame 17b). In each of the units 1b, the joining of the yarn Y can also be performed in each of the two first spinning units 1a and the second spinning units 1b.

In the spinning machine 10, the yarn joining device 90 has a drive unit 98 for moving it in a predetermined direction D. As shown in FIG. Accordingly, the yarn joining device 90 can be easily moved to an appropriate position.

In the spinning machine 10, the yarn joining device 90 has a yarn joining unit 91 for performing yarn joining in each of the first spinning unit 1a and the second spinning unit 1b. Accordingly, yarn splicing can be appropriately performed in each of the first spinning unit 1a and the second spinning unit 1b.

In the spinning machine 10, the yarn joining section 91 is provided so as to be able to advance and retreat with respect to the movement path of the yarn Y in the first spinning unit 1a, and to be able to move forward and backward with respect to the movement of the yarn Y in the second spinning unit 1b. The path can advance and retreat. Thereby, the yarn joining unit 91 can be retracted in advance at times other than the yarn joining time in each of the first spinning unit 1a and the second spinning unit 1b so as not to interfere with each member. The yarn joining section 91 can suitably perform yarn joining on or near the moving path of the yarn Y at the time of yarn joining in each of the first spinning unit 1a and the second spinning unit 1b. Furthermore, the upstream side yarn conveying part 92 can be enlarged by retracting the yarn joining part 91 at times other than the yarn joining time in each of the first spinning unit 1a and the second spinning unit 1b so as not to interfere with each member. and the degree of freedom of the movement locus of the downstream side yarn feeding part 93.

In the spinning machine 10, the yarn joining device 90 has: an upstream side yarn delivery unit 92 for delivering the yarn Y from the spinning device 3 to the yarn joining unit 91 during yarn joining; The downstream side yarn feeding part 93 where the part 91 feeds the yarn Y from the package P. Accordingly, 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 at the time of yarn splicing.

In the spinning machine 10, the top rollers 21a, 22a, 23a, 24a of the draft device 2 of the first spinning unit 1a and the top rollers 21a, 22a, 23a, 24a of the draft device 2 of the second spinning unit 1b It is supported by the draft cradle 26 provided in common with the first spinning unit 1a and the second spinning unit 1b. Accordingly, since the draft cradle 26 is also shared by the first spinning unit 1a and the second spinning unit 1b, the structure of the spinning machine 10 can be simplified.

An embodiment of the present invention has been described above, but the present invention is not limited to the above-described 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 first spinning unit 1a and the second spinning unit 1b in the predetermined direction D. In this case, by providing an opening in each of the first frame 17a and the second frame 17b (an opening in which at least a part of the yarn joining device 90 can be placed), or by providing an opening between the first spinning unit 1a and the first frame 17a, Space is provided between each of the second spinning unit 1b and the second frame 17b, and the yarn joining device 90 can also be used to perform yarn joining in each of the first spinning unit 1a and the second spinning unit 1b. .

A suction port provided with an elongated suction port having a length corresponding to the length of the package P may be used as the downstream side yarn transporting portion 93 . In this case, the yarn pulling device 43 and the fourth guide 16 are unnecessary. At least one of the upstream side yarn delivery unit 92 and the downstream side yarn delivery unit 93 may be provided in the spinning unit 1 . In this case, further reduction in weight of the yarn joining device 90 can be achieved.

The yarn joining unit 91 is not limited to being capable of advancing and retreating with respect to the movement path of the yarn Y, and may be fixed at a position where the yarn joining device 90 can join the yarn. A mechanism for operating the first guide 11 and the second guide 12 may be provided in the yarn joining device 90 . In addition, a structure necessary for the yarn joining operation may be provided in the yarn joining device 90 . A drafting cradle 26 can also be arranged in each spinning unit 1 .

The yarn winding machine of the present invention is not limited to a spinning machine, and may be other yarn winding machines such as an automatic winder. The first yarn winding unit and the second yarn winding unit of the present invention are not limited to the spinning unit, and may be other yarn winding units such as a winder unit. The first yarn winding unit and the second yarn winding unit 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 (13)

1. A yarn winding machine, comprising: The first yarn winding unit is configured to wind the first yarn to form a first package; the second yarn winding unit is disposed adjacent to the first yarn winding unit in a predetermined direction, and winds the second yarn to form a second package; and The yarn joining device is provided in common only with respect to the first yarn winding unit and the second yarn winding unit, and the first yarn winding unit and the second yarn winding unit Yarn splicing is carried out in each of the 2. Yarn winding machine according to claim 1, wherein, The yarn joining device is installed so as to be able to move along the predetermined direction between a first yarn joining position in the first yarn winding unit and a second yarn joining position in the second yarn winding unit. move. 3. The yarn winding machine according to claim 1, wherein: Movement of the yarn joining device beyond a region where an end of the first yarn winding unit opposite to the second yarn winding unit is in contact with the second yarn winding unit is restricted. A region between ends of the yarn winding unit opposite to the first yarn winding unit. 4. Yarn winding machine according to claim 2, wherein, Movement of the yarn joining device beyond a region where an end of the first yarn winding unit opposite to the second yarn winding unit is in contact with the second yarn winding unit is restricted. A region between ends of the yarn winding unit opposite to the first yarn winding unit. 5. The yarn winding machine according to any one of claims 1 to 4, further comprising: a first frame disposed along an end of the first yarn winding unit opposite to the second yarn winding unit, and supporting at least a part of the first yarn winding unit; as well as The second frame is provided along an end of the second yarn winding unit opposite to the first yarn winding unit, and supports at least a part of the second yarn winding unit, The yarn joining device is configured to be movable along the predetermined direction in an area between the first frame and the second frame, and beyond the area between the first frame and the second frame. Movement is restricted. 6. The yarn winding machine according to any one of claims 1 to 4, wherein: The width of the yarn joining device in the predetermined direction is equal to or less than the width of each of the first yarn winding unit and the second yarn winding unit in the predetermined direction. 7. Yarn winding machine according to claim 5, wherein, The width of the yarn joining device in the predetermined direction is equal to or less than the width of each of the first yarn winding unit and the second yarn winding unit in the predetermined direction. 8. The yarn winding machine according to any one of claims 1 to 4, wherein: The yarn joining device has a drive unit for moving in the predetermined direction. 9. The yarn winding machine according to any one of claims 1 to 4, wherein: The yarn joining device has a yarn joining unit, The yarn joining section joins the first yarn and joins the second yarn. 10. Yarn winding machine according to claim 9, wherein, The yarn splicing part is capable of advancing and retreating relative to a moving path of the first yarn in the first yarn winding unit, and capable of moving forward and backward relative to the second yarn in the second yarn winding unit. The movement path advances and retreats. 11. Yarn winding machine according to claim 9, wherein, The yarn joining device also has a yarn delivery unit, The yarn feeding unit feeds the first yarn to the yarn joining unit when joining the first yarn, and sends the first yarn to the yarn joining unit when joining the second yarn. The second yarn is fed. 12. Yarn winding machine according to claim 10, wherein, The yarn joining device also has a yarn delivery unit, The yarn feeding unit feeds the first yarn to the yarn joining unit when joining the first yarn, and sends the first yarn to the yarn joining unit when joining the second yarn. The second yarn is fed. 13. The yarn winding machine according to any one of claims 1 to 4, wherein: The first yarn winding unit has: The first drafting device generates the first fiber bundle; a first spinning device that spins the first fiber bundle with a swirling air flow to generate the first yarn; and a first winding device that winds the first yarn to form the first package, The second yarn winding unit has: The second drafting device generates the second fiber bundle; a second spinning device that spins the second fiber bundle with a swirling air flow to generate the second yarn; and a second winding device that winds the second yarn to form the second package, The top rollers of the first drafting device and the top rollers of the second drafting device are provided by a drafting cradle shared by the first yarn winding unit and the second yarn winding unit support.