JP7465742B2 - Synthetic yarn splicer - Google Patents

Description

The present invention relates to a splicer for synthetic yarns.

As a technique related to a synthetic yarn splicer that splices one synthetic fiber yarn with the other, for example, a yarn joining device described in Patent Document 1 is known. The device described in Patent Document 1 includes a pair of clamps that can clamp the overlapping ends of two yarns (one yarn and the other yarn), and an air nozzle that blows compressed air onto the overlapping yarns between the clamps to entangle and join the yarns. A yarn slippage prevention cover is provided on the air nozzle so that it can swing freely. The yarn slippage prevention cover prevents the yarns from flying out of the air supply hole of the air nozzle when the yarns are joined.

Japanese Patent Application Laid-Open No. 10-17214

In the synthetic yarn splicer described above, there is still room for improvement in terms of preventing one yarn and the other yarn from jumping out of the passage through which the one yarn and the other yarn pass at the yarn splicing section during yarn splicing.

One aspect of the present invention aims to provide a synthetic yarn splicer that can prevent one yarn and the other yarn from coming out of the passage of the yarn splicing section during yarn splicing.

The synthetic yarn splicer according to one aspect of the present invention is a synthetic yarn splicer that splices one yarn and another yarn made of synthetic fibers, and includes a passage that forms a space through which the one yarn and the other yarn can be inserted, and an injection hole that opens into the passage and injects a fluid, a yarn splicing section that entangles the one yarn and the other yarn inserted into the passage, a first clamping section that is arranged on one side of the yarn splicing section in the penetration direction of the passage and clamps the one yarn and the other yarn, a second clamping section that is arranged on the other side of the yarn splicing section in the penetration direction and clamps the one yarn and the other yarn, and a shutter section that can close at least a part of the passage of the yarn splicing section, and the shutter section closes either one of the first clamping section and the second clamping section in the passage that is away from the yarn splicing section when the one yarn and the other yarn are entangled at the yarn splicing section.

After extensive research, the inventors have found that during yarn splicing, for example, due to the influence of the fluid sprayed from the spray hole, one yarn and the other yarn tend to fly out from either the first clamping section or the second clamping section in the passage that is farther from the yarn splicing section (hereinafter simply referred to as the "far side"). Therefore, in a synthetic yarn splicer, by blocking the far side of the passage with a shutter section during yarn splicing, for example, fluid from the spray hole is actively caused to flow to the opposite side of the passage from the far side, and the fluid can be used to prevent one yarn and the other yarn from flying out from the far side of the passage. In other words, it is possible to prevent one yarn and the other yarn from flying out of the passage of the yarn splicing section during yarn splicing.

The synthetic yarn splicer according to one aspect of the present invention may include an opening/closing mechanism for opening and closing the shutter section. In this configuration, the shutter section can be opened and closed using the opening/closing mechanism.

In a synthetic yarn splicer according to one aspect of the present invention, the opening and closing mechanism may have a shutter cam, a follower connected to the shutter section and following the shutter cam, and a motor that rotates and drives the shutter cam. In this case, the shutter section can be opened and closed by the opening and closing mechanism as a cam mechanism.

In a synthetic yarn splicer according to one aspect of the present invention, the shutter section may include a first shutter arranged on one side of the yarn splicing section in the passage penetration direction and capable of blocking one side of the passage in the passage penetration direction, and a second shutter arranged on the other side of the yarn splicing section in the passage penetration direction and capable of blocking the other side of the passage in the passage penetration direction. In this case, blocking of either the first clamping section or the second clamping section in the passage that is farther from the yarn splicing section can be achieved by closing either the first shutter or the second shutter.

The synthetic yarn splicer according to one aspect of the present invention includes a moving mechanism for moving each of the first clamping section and the second clamping section along the penetration direction, and the moving mechanism performs a first moving process in which, in a state in which the first clamping section clamps one yarn and the other yarn and the clamping of the second clamping section is released, the first clamping section is moved to one side in the penetration direction, and the first portion of the one yarn and the other yarn that was clamped by the second clamping section before the release is moved to one side in the penetration direction, and the yarn joining section performs a first intertwining process in which the one yarn and the other yarn are intertwined by the yarn joining section before the first moving process, and a second intertwining process in which the first portion of the one yarn and the other yarn are intertwined after the first moving process, and the shutter section may have the first shutter in a closed state and the second shutter in an open state during the second intertwining process. This makes it possible to prevent the one yarn and the other yarn from jumping out of the passage of the yarn joining section during the second intertwining process.

In a synthetic yarn splicer according to one aspect of the present invention, the moving mechanism, after the second intertwining process, in a state in which the second clamping section clamps the one yarn and the other yarn and the clamping of the first clamping section is released, moves the second clamping section to the other side in the penetration direction, and performs a second moving process in which the second portions of the one yarn and the other yarn that were clamped by the first clamping section before the release are moved to the other side in the penetration direction, and the yarn joining section performs a third intertwining process in which the second portions of the one yarn and the other yarn are intertwined after the second moving process, and the shutter section may have the first shutter in an open state and the second shutter in a closed state during the third intertwining process. This makes it possible to prevent the one yarn and the other yarn from jumping out of the passage of the yarn joining section when the third intertwining process is performed.

According to one aspect of the present invention, it is possible to provide a synthetic yarn splicer that can prevent one yarn and the other yarn from coming out of the passage of the yarn splicing section during yarn splicing.

FIG. 1 is a diagram showing a configuration of a false twisting system according to an embodiment. FIG. 2 is a perspective view showing a package holding section of the first conveying device. FIG. 3 is a perspective view showing a yarn supply package with an adapter attached. FIG. 4 is a perspective view showing a package holding section of the second conveying device. FIG. 5 is a perspective view showing a creel stand. FIG. 6 is a perspective view showing a creel. FIG. 7 is a perspective view showing a package exchange device. 8(a) and 8(b) are perspective views showing the holding unit. FIG. 9 is a diagram showing the configuration of the replacement unit. FIG. 10 is a side view showing the recovery device. FIG. 11 is a side view showing the supply device. FIG. 12 is a perspective view showing the yarn splicing device. FIG. 13 is a perspective view showing the yarn splicing device. FIG. 14 is a perspective view showing the yarn splicing device. FIG. 15 is a perspective view showing the splicer. FIG. 16 is a cross-sectional view showing the yarn joining portion. FIG. 17 is another perspective view of the splicer. Fig. 18(a) is a perspective view showing the second cutter, and Fig. 18(b) is another perspective view showing the second cutter. FIG. 19 is a schematic development showing the first cam groove and the second cam groove of the cylindrical cam. Fig. 20(a) is a schematic plan view showing an example of the operation of the splicer, and Fig. 20(b) is a view continuing from Fig. 20(a). Fig. 21(a) is a diagram showing a continuation of Fig. 20(b). Fig. 21(b) is a diagram showing a continuation of Fig. 21(a). Fig. 22(a) is a diagram showing a continuation of Fig. 21(b), and Fig. 22(b) is a diagram showing a continuation of Fig. 22(a). Fig. 23(a) is a diagram showing a continuation of Fig. 22(b) Fig. 23(b) is a diagram showing a continuation of Fig. 23(a) Fig. 24(a) is a diagram showing a continuation of Fig. 23(b). Fig. 24(b) is a diagram showing a continuation of Fig. 24(a). Fig. 25(a) is a diagram showing a continuation of Fig. 24(b), and Fig. 25(b) is a diagram showing a continuation of Fig. 25(a). Fig. 26(a) is a diagram showing a continuation of Fig. 25(b), and Fig. 26(b) is a diagram showing a continuation of Fig. 26(a). Fig. 27(a) is a diagram showing a continuation of Fig. 26(b) Fig. 27(b) is a diagram showing a continuation of Fig. 27(a) FIG. 28 is a diagram showing a continuation of FIG.

A preferred embodiment of the present invention will be described in detail below with reference to the attached drawings. In the description of the drawings, the same or equivalent elements are given the same reference numerals, and duplicate descriptions will be omitted.

1, the false twist processing system 1 includes a false twist processing machine 2, a first conveying device 3, a second conveying device 4, a yarn supplying unit 5, a package supplying device 6, and a package changing device 7. The false twist processing system 1 includes a control device (not shown) that controls the false twist processing machine 2, the first conveying device 3, the second conveying device 4, the package supplying device 6, and the package changing device 7. In the false twist processing system 1 according to the present embodiment, multiple false twist processing machines 2, the first conveying device 3, the second conveying device 4, the yarn supplying unit 5, the package supplying device 6, and the package changing device 7 are provided. In the following description, the "Z direction" shown in the figure is the vertical direction (up and down direction), the "X direction" is the horizontal direction, and the "Y direction" is the horizontal direction perpendicular to the X direction and the Z direction.

The false twist processing system 1 processes yarn Y (see FIG. 3) supplied from multiple yarn supply packages P1 (see FIG. 2) to produce a winding package P2 (see FIG. 4). Yarn Y is a synthetic yarn made of thermoplastic synthetic fibers such as polyester and polyamide. The yarn supply package P1 is formed by winding partially oriented yarn (POY: Partially Oriented Yarn) onto a yarn supply bobbin B1 (see FIG. 2). The winding package P2 is formed by winding drawn textured yarn (DTY: Draw Textured Yarn) onto a winding bobbin B2 (see FIG. 4).

The false twisting machine 2 processes the yarn Y to form a winding package P2. The false twisting machine 2 has a main machine base 2a and two winding tables 2b. The main machine base 2a is provided with a twisting device, a feed roller, etc. The winding table 2b is provided with a winding device, a doffing device, etc. The main machine base 2a extends along the X direction. The winding table 2b extends along the X direction. The winding table 2b is positioned opposite the main machine base 2a in the Y direction (width direction of the main machine base 2a). In other words, the two winding tables 2b are positioned to sandwich the main machine base 2a between them.

The false twisting machine 2 applies false twisting to the yarn Y supplied from multiple yarn supply packages P1, and winds the processed yarn onto a winding bobbin B2 to form a winding package P2 (see FIG. 4). The false twisting machine 2 supplies the formed winding package P2 to the second conveying device 4.

The first conveying device 3 conveys the yarn supply package P1. The first conveying device 3 runs along a first rail R1 that is suspended from the ceiling, for example. The first rail R1 is arranged, for example, between one false twisting machine 2 and another false twisting machine 2, and between the winding table 2b and the yarn supply unit 5. The first conveying device 3 conveys the yarn supply package P1 between a supply location where the yarn supply package P1 is supplied and a predetermined package replenishing device 6. As shown in FIG. 2, the first conveying device 3 has a first package holding unit 3a. The first package holding unit 3a is suspended from the first rail R1. The first package holding unit 3a holds multiple (for example, 12) yarn supply packages P1. The first package holding unit 3a supports the yarn supply package P1 by a support member (not shown) that is inserted into the yarn supply bobbin B1 of the yarn supply package P1.

As shown in FIG. 3, an adapter 10 is attached to the yarn supply package P1. The adapter 10 holds the yarn Y. The adapter 10 has an attachment portion 11, a first holding portion 12, and a second holding portion 13. The attachment portion 11 is attached to the yarn supply bobbin B1 of the yarn supply package P1 so as to be synchronously rotatable. The attachment portion 11 has a cylindrical shape. The attachment portion 11 is attached to the end of the yarn supply bobbin B1 protruding from the side of the yarn supply package P1.

The first holding section 12 holds the first yarn end Y1 of the yarn Y on the outer layer side of the yarn supply package P1. The first holding section 12 is provided on the mounting section 11. The first holding section 12 has a first arm 12a, a first gripping device 12b, and a first yarn guide 12c. The base end side of the first arm 12a is fixed to the side of the mounting section 11 and extends along the radial direction of the mounting section 11. The first gripping device 12b grips the first yarn end Y1. The first gripping device 12b is provided on the tip side of the first arm 12a. The first yarn guide 12c is provided on the first arm 12a.

The second holding section 13 holds the second yarn end Y2 of the yarn Y on the inner layer side (tail side) of the yarn supply package P1. The second holding section 13 is provided on the mounting section 11. The second holding section 13 has a second arm 13a, a second gripping device 13b, and a second yarn guide 13c. The base end side of the second arm 13a is fixed to the side of the mounting section 11 and extends along the radial direction of the mounting section 11. The second arm 13a is arranged so as to be positioned in the same straight line as the first arm 12a. The second gripping device 13b grips the second yarn end Y2. The second gripping device 13b is provided on the tip side of the second arm 13a. The second yarn guide 13c is provided on the second arm 13a.

In the adapter 10, the first yarn end Y1 pulled out from the outer layer side of the yarn supply package P1 is held by the first gripper 12b via the first yarn guide 12c of the first holding part 12, and the second yarn end Y2 pulled out from the inner layer side of the yarn supply package P1 is held by the second gripper 13b via the first yarn guide 12c of the first holding part 12 and the second yarn guide 13c of the second holding part 13. The adapter 10 is attached to the yarn supply package P1, for example, by an operator. A bobbin cap BC (see FIG. 2) may be attached to the end of the yarn supply bobbin B1 opposite to the end to which the adapter 10 is attached.

As shown in FIG. 4, the second conveying device 4 conveys the winding package P2. The second conveying device 4 runs along the first rail R1. The second conveying device 4 conveys the winding package P2 between a predetermined false twisting machine 2 and a storage facility (not shown) for the winding package P2. The second conveying device 4 has a second package holding section 4a. The second package holding section 4a is suspended from the first rail R1. A plurality of (e.g., 16) winding packages P2 are each held via the second package holding section 4a. Specifically, the winding packages P2 are held by having both ends of each winding bobbin B2 supported by package receivers.

As shown in FIG. 1, the yarn supplying unit 5 supplies yarn Y to the false twisting machine 2. The yarn supplying unit 5 is disposed adjacent to the false twisting machine 2. The yarn supplying unit 5 is disposed in a position facing the winding table 2b of the false twisting machine 2 in the Y direction. The yarn supplying unit 5 extends along the X direction. The yarn supplying unit 5 has a plurality of creel stands 20. The creel stands 20 hold the yarn supply package P1. A plurality of creel stands 20 are arranged along the X direction. In the yarn supplying unit 5 according to this embodiment, the creel stands 20 are disposed in pairs back-to-back in the Y direction.

As shown in FIG. 5, the creel stand 20 has a creel base 21, four first pillars 22a, 22b, 22c, and 22d, a partition plate 23, and a number of pegs 24. The creel base 21 is a frame-shaped body. The four first pillars 22a to 22d are erected on the creel base 21. The four first pillars 22a to 22d extend along the Z direction. Each of the four first pillars 22a to 22d is disposed at a predetermined interval in the X direction and at a predetermined interval in the Y direction. The partition plate 23 is provided on the first pillars 22a to 22d. The partition plate 23 is disposed at a predetermined interval in the Z direction of the first pillars 22a to 22d. The partition plate 23 prevents the yarn supply package P1 from falling.

The pegs 24 support the yarn supply package P1. The pegs 24 are provided on the first pillars 22a and 22b. A plurality of pegs 24 (e.g., eight pegs) are provided at predetermined intervals in the Z direction on the first pillars 22a and 22b. The pegs 24 are provided between a pair of partition plates 23. The pegs 24 provided on the first pillar 22a and the pegs 24 provided on the first pillar 22b are arranged side by side at the same height. In the following description, the pegs 24 provided on the first pillar 22a are also referred to as the "first peg 24a" and the pegs 24 provided on the first pillar 22b are also referred to as the "second peg 24b."

The first peg 24a and the second peg 24b are used in pairs. In this configuration, the yarn Y of the yarn supply package P1 supported by the first peg 24a is connected to the yarn Y of the yarn supply package P1 supported by the second peg 24b. Specifically, the first yarn end Y1 on the outer layer side or the second yarn end Y2 on the inner layer side of the yarn Y of the yarn supply package P1 supported by the first peg 24a is connected to the second yarn end Y2 on the inner layer side or the first yarn end Y1 on the outer layer side of the yarn Y of the yarn supply package P1 supported by the second peg 24b. As a result, one yarn Y is supplied from the yarn supply package P1 supported by the pair of the first peg 24a and the second peg 24b.

As shown in FIG. 6, the peg 24 has a yarn supply package support portion 25 and a peg body portion 26. The yarn supply package support portion 25 supports the yarn supply package P1. The yarn supply package support portion 25 has package support members 25a, 25b and a rotation mechanism 25c. The package support members 25a, 25b are rod-shaped members. The package support members 25a, 25b are rotatably supported by the peg body portion 26. The package support members 25a, 25b extend in one direction and are parallel to each other, and are arranged at a predetermined interval. The peg 24 supports the yarn supply package P1 at two points by the package support members 25a, 25b.

A covering portion 25d is provided at one end of the package support member 25a in the extending direction. A covering portion 25e is provided at one end of the package support member 25b in the extending direction. The covering portions 25d and 25e are formed of, for example, rubber (resin) or the like having a high coefficient of friction. The covering portions 25d and 25e come into contact (abut) with the inner peripheral surface of the yarn supplying bobbin B1 of the winding package P2. One end of the package support member 25a and one end of the package support member 25b are connected by a connecting member 25f.

The rotation mechanism 25c has a driven pulley 25g, a driving pulley 25h, a power transmission belt 25i, and a first wheel 25j.

The driven pulley 25g is provided at the other end of the package support member 25a. The driving pulley 25h is provided at the other end of the package support member 25b. The power transmission belt 25i is stretched around the driven pulley 25g and the driving pulley 25h. The first wheel 25j is provided on the driving pulley 25h (package support member 25b). In this embodiment, the first wheel 25j is a Geneva wheel that constitutes a Geneva mechanism. The first wheel 25j is rotated by the rotational drive of the first yarn joining driver 62a or the second yarn joining driver 63a of the yarn joining device 60 described later. In the yarn supply package support section 25, the package support member 25a and the package support member 25b rotate synchronously due to the rotation of the first wheel 25j.

The peg body 26 has a peg body 26a and a rotation transmission member 26b. The peg body 26a is a member having a rectangular parallelepiped shape. The peg body 26a supports the package support members 25a and 25b of the yarn supply package support part 25 so that they can rotate around their rotation axis. The peg body 26a is provided with a regulating member 26c. The regulating member 26c has, for example, a disk shape. The regulating member 26c is disposed on one side of the peg body 26a. The regulating member 26c is attached by inserting the package support members 25a and 25b through the regulating member 26c. The regulating member 26c faces the end face of the yarn supply package P1 and regulates the movement of the yarn supply package P1 in the extension direction of the package support members 25a and 25b. An insertion hole 26d is formed in the peg body 26a. The first support 22a or the first support 22b of the creel stand 20 is inserted into the insertion hole 26d.

The rotation transmission member 26b supports the peg body 26a. The peg body 26a is fixed to the upper end of the rotation transmission member 26b. The rotation transmission member 26b has a cylindrical shape. The hollow portion of the rotation transmission member 26b communicates with the insertion hole 26d of the peg body 26a. The first support pillars 22a and 22b of the creel stand 20 are coaxially inserted into the rotation transmission member 26b. The second wheel 26e is provided at the lower end of the rotation transmission member 26b. In this embodiment, the second wheel 26e is a Geneva wheel that constitutes a Geneva mechanism. The second wheel 26e is rotated by the drive of the first rotation driver 36a or the second rotation driver 37a of the rotation device 35 described later. The peg body 26 rotates with the rotation of the second wheel 26e. As a result, the yarn supply package support part 25 rotates. The peg 24 rotates between an exchange position where the yarn supply bobbin B1 is collected and the yarn supply package P1 is attached, and a supply position where the yarn Y is supplied.

As shown in FIG. 1, the package supply device 6 supplies a yarn supply package P1 to the package changing device 7. The package supply device 6 temporarily stores the yarn supply package P1 transported by the first conveying device 3, and supplies the yarn supply package P1 to the package changing device 7. The package supply device 6 stores multiple (e.g., four) yarn supply packages P1. The package supply device 6 has a transfer mechanism (not shown) that transfers the yarn supply package P1 from the first conveying device 3.

The package changing device 7 retrieves the yarn supplying bobbin B1 from the peg 24 and attaches the yarn supplying package P1 to the peg 24. As shown in FIG. 7, the package changing device 7 runs along the second rail R2. The second rail R2 is laid on the floor and extends along the X direction (the arrangement direction of the creel stand 20). That is, the package changing device 7 runs along the X direction. The package changing device 7 moves between one end of the yarn supplying unit 5 where the package replenishing device 6 is arranged and the other end of the yarn supplying unit 5.

The package exchange device 7 includes a traveling cart (traveling unit) 30, a lifting unit 31, a holding unit (holding device) 32, and an exchange unit 33. The package exchange device 7 also includes a control unit (not shown) that controls the operation of each unit.

The traveling cart 30 has a traveling base part 30a and a support column part 30b. The traveling base part 30a has a rectangular parallelepiped shape. The traveling base part 30a houses the wheels and the drive mechanism that run on the second rail R2.

The pillar support section 30b is erected on the running base section 30a. The pillar support section 30b has four second pillars 30c, 30d, 30e, and 30f and a wall section 30g. The second pillars 30c to 30f and the wall section 30g extend along the Z direction. The second pillar 30c is disposed at one end of the running base section 30a in the X direction and at one end of the running base section 30a in the Y direction. The second pillar 30c is disposed at a corner of the running base section 30a. The second pillar 30d is disposed at one end of the running base section 30a in the X direction and at the other end of the running base section 30a in the Y direction. The second pillar 30c and the second pillar 30d are disposed at positions facing each other in the Y direction. The second pillar 30d is disposed at a corner of the running base section 30a.

The second support 30e is disposed at a predetermined distance from the second support 30c at a position facing the second support 30c in the X direction. The second support 30f is disposed at the other end of the running base 30a in the Y direction between the second support 30c and the second support 30e in the X direction. The second support 30f is disposed facing the second support 30d in the X direction. The wall 30g extends along the X direction. The wall 30g is disposed at the other end of the running base 30a in the X direction and at the other end in the Y direction. That is, the wall 30g is disposed at a corner of the running base 30a. The wall 30g is disposed facing the second support 30e in the Y direction and facing the second support 30f in the X direction.

The lifting unit 31 allows a worker to ride on it and move up and down. The lifting unit 31 is used during maintenance and the like. The lifting unit 31 is disposed at the other end in the X direction of the running base portion 30a of the running cart 30. The lifting unit 31 has a guide portion 31a and a lifting portion 31b.

The guide portion 31a is a guide rail. The guide portion 31a is disposed on the wall portion 30g of the column support portion 30b of the traveling cart 30. The guide portion 31a extends along the Z direction. The lifting portion 31b is a work platform on which a worker sits. The lifting portion 31b is box-shaped. The lifting portion 31b is provided so as to be able to rise and fall freely in the Z direction along the guide portion 31a. The lifting portion 31b moves along the guide portion 31a by a drive mechanism (not shown).

The holding unit 32 holds multiple (e.g., four) yarn supply packages P1. The holding unit 32 holds the same number of yarn supply packages P1 as the number of yarn supply packages P1 held by the package supply device 6. The holding unit 32 receives yarn supply packages P1 from the package supply device 6, temporarily stores the yarn supply packages P1, and supplies the yarn supply packages P1 to the replacement unit 33.

As shown in Fig. 8(a) and Fig. 8(b), the holding unit 32 has a main body frame 32a, a package support section 32b, and a drive section 32c. The main body frame 32a is disposed on the running base section 30a of the running cart 30. The main body frame 32a is disposed at one end of the running base section 30a in the X direction.

The package support part 32b supports the yarn supply package P1. The package support part 32b is rotatably arranged. The package support part 32b rotates within a range of approximately 90°. The package support part 32b rotates between a supply position (see FIG. 8(b)) where the yarn supply package P1 is supplied from the package supply device 6, and a supply position (see FIG. 8(a)) where the yarn supply package P1 is supplied to the replacement unit 33. The drive part 32c rotates the package support part 32b. The drive part 32c is, for example, an air cylinder.

The replacement unit 33 replaces the yarn supply bobbin B1 with the yarn supply package P1 in the peg 24. Specifically, the replacement unit 33 retrieves the yarn supply bobbin B1 from the peg 24 and attaches the yarn supply package P1 to the peg 24. As shown in FIG. 7, the replacement unit 33 is provided adjacent to the holding unit 32. As shown in FIG. 9, the replacement unit 33 includes a base 34, a rotating device 35, a retrieving device 40, a supplying device 50, a yarn joining device 60, and a moving device 70.

The base 34 supports the rotation device 35, the recovery device 40, the supply device 50, and the yarn joining device 60. The base 34 is provided so as to be freely raised and lowered along the support column 30b of the traveling carriage 30. The base 34 is provided in a position accessible to the holding unit 32.

The rotating device 35 rotates the peg 24 of the creel stand 20. The rotating device 35 is fixed to the base 34. The rotating device 35 is disposed in a position on the base 34 facing the yarn supplying unit 5. The rotating device 35 has a first drive mechanism 36 and a second drive mechanism 37.

The first drive mechanism 36 rotates the first peg 24a of the creel stand 20. The first drive mechanism 36 has a first rotation driver 36a and a first rotation arm portion 36b. The first rotation driver 36a rotates the second wheel 26e of the first peg 24a. The first rotation driver 36a is a Geneva driver that constitutes a Geneva mechanism. The first rotation driver 36a rotates by the rotation drive of a motor (not shown). The first rotation arm portion 36b supports the first rotation driver 36a. The first rotation arm portion 36b is provided so as to be swingable in the horizontal direction. The first rotation arm portion 36b is driven, for example, by a motor or an air cylinder (not shown).

The second drive mechanism 37 rotates the second peg 24b of the creel stand 20. The second drive mechanism 37 has a second rotation driver 37a and a second rotation arm portion 37b. The second rotation driver 37a rotates the second wheel 26e of the second peg 24b. The second rotation driver 37a is a Geneva driver that constitutes a Geneva mechanism. The second rotation driver 37a rotates by the rotation drive of a motor (not shown). The second rotation arm portion 37b supports the second rotation driver 37a. The second rotation arm portion 37b is provided so as to be swingable in the horizontal direction. The second rotation arm portion 37b is driven, for example, by a motor or an air cylinder (not shown).

When attaching the yarn supply package P1 to the peg 24, the rotation device 35 rotates the peg 24 to change the orientation of the peg 24. The rotation device 35 operates the first drive mechanism 36 or the second drive mechanism 37 corresponding to the target peg 24. For example, when operating the first drive mechanism 36, the rotation device 35 swings the first rotation arm portion 36b to engage the first rotation driver 36a with the second wheel 26e of the first peg 24a. When the first rotation driver 36a and the second wheel 26e engage with each other, the rotation device 35 rotates the first rotation driver 36a in one direction. When the second wheel 26e of the peg 24 rotates, the rotation transmission member 26b rotates. This rotates the peg 24, and the tips of the package support members 25a and 25b face the replacement unit 33.

The recovery device 40 recovers the yarn supplying bobbin B1 to which the adapter 10 is attached from the peg 24. As shown in FIG. 10, the recovery device 40 has a first support mechanism 41 and a first recovery drive mechanism 42. The first support mechanism 41 supports the yarn supplying bobbin B1. Furthermore, the first support mechanism 41 recovers the yarn supplying bobbin B1 by advancing and retreating from the peg 24. The first support mechanism 41 has a first slide portion 41a and a first package support member 41b.

The first slide portion 41a has a first linear guide 41c. A portion of the first slide portion 41a can move in a predetermined direction via the first linear guide 41c. The first package support member 41b supports the yarn supplying bobbin B1. The first package support member 41b is provided at the tip of the moving first slide portion 41a. The first package support member 41b extends along the extension direction of the first slide portion 41a.

The first recovery drive mechanism 42 drives the first support mechanism 41. The first recovery drive mechanism 42 has a first slide rail 42a, a first recovery drive unit 42b, a first lift unit 42c, and a second recovery drive unit 42d. The first slide rail 42a is connected to the first slide unit 41a. The first slide rail 42a reciprocates a part of the first slide unit 41a by driving the first recovery drive unit 42b. The first recovery drive unit 42b is, for example, an air cylinder. The first lift unit 42c is connected to the first slide unit 41a. The first lift unit 42c lifts and lowers the first slide unit 41a by driving the second recovery drive unit 42d. This causes the first slide unit 41a to swing. The second recovery drive unit 42d is, for example, a motor.

The recovery operation of the yarn supplying bobbin B1 by the recovery device 40 will be described. The recovery device 40 advances a part of the first slide portion 41a of the first support mechanism 41 by the first recovery drive mechanism 42 with respect to the peg 24 rotated by the rotation device 35, and positions the first package support member 41b in the hollow portion of the yarn supplying bobbin B1. At this time, the recovery device 40 swings the first slide portion 41a of the first support mechanism 41 downward by the first recovery drive mechanism 42, and tilts the first package support member 41b with respect to the horizontal direction. When the first package support member 41b is positioned in the hollow portion of the yarn supplying bobbin B1, the recovery device 40 swings the first slide portion 41a upward by the first recovery drive mechanism 42, and makes the first package support member 41b horizontal. As a result, the first package support member 41b comes into contact with the yarn supplying bobbin B1, lifting the yarn supplying bobbin B1 and separating the yarn supplying bobbin B1 from the package support members 25a and 25b. The recovery device 40 retracts a part of the first slide portion 41a of the first support mechanism 41 by the first recovery drive mechanism 42. In this way, the recovery device 40 recovers the yarn supplying bobbin B1 from the peg 24.

The supply device 50 supplies the yarn supply package P1 to the peg 24. As shown in FIG. 11, the supply device 50 has a second support mechanism 51 and a second supply drive mechanism 52. The second support mechanism 51 supports the yarn supply package P1. Furthermore, the second support mechanism 51 supplies the yarn supply package P1 by advancing and retreating from the peg 24. The second support mechanism 51 has a second slide portion 51a and a second package support member 51b.

The second slide portion 51a has a second linear guide 51c. A portion of the second slide portion 51a can move in a predetermined direction via the second linear guide 51c. The second package support member 51b supports the yarn supply package P1. The second package support member 51b is provided at the tip of the moving second slide portion 51a. The second package support member 51b extends along the extension direction of the second slide portion 51a.

The second supply drive mechanism 52 drives the second support mechanism 51. The second supply drive mechanism 52 has a second slide rail 52a, a first supply drive unit 52b, a second lift unit 52c, and a second supply drive unit 52d. The second slide rail 52a is connected to the second slide unit 51a. The second slide rail 52a reciprocates a part of the second slide unit 51a by driving the first supply drive unit 52b. The first supply drive unit 52b is, for example, an air cylinder. The second lift unit 52c is connected to the second slide unit 51a. The second lift unit 52c lifts and lowers the second slide unit 51a by driving the second supply drive unit 52d. This causes the second slide unit 51a to swing. The second supply drive unit 52d is, for example, a motor.

The acquisition operation in which the supply device 50 acquires the yarn supply package P1 from the holding unit 32 will be described. The supply device 50 acquires the yarn supply package P1 from the holding unit 32 when the package exchange device 7 is moving. When the exchange unit 33 stops at a predetermined height position relative to the holding unit 32, the supply device 50 advances a part of the second slide portion 51a of the second support mechanism 51 by the second supply drive mechanism 52 with respect to the yarn supply package P1 supported by the package support portion 32b of the holding unit 32, and positions the second package support member 51b in the hollow portion of the yarn supply package P1. At this time, the supply device 50 swings the second slide portion 51a of the second support mechanism 51 downward by the second supply drive mechanism 52, thereby tilting the second package support member 51b with respect to the horizontal direction. When the second package support member 51b is positioned in the hollow portion of the yarn supply package P1, the supply device 50 uses the second supply drive mechanism 52 to swing the second slide portion 51a upward to make the second package support member 51b horizontal. This brings the second package support member 51b into contact with the yarn supply package P1, lifting the yarn supply package P1 and separating the yarn supply package P1 from the package support portion 32b. The supply device 50 uses the second supply drive mechanism 52 to move back a portion of the second slide portion 51a of the second support mechanism 51. As a result, the supply device 50 obtains the yarn supply package P1 from the holding unit 32.

The supply operation of the supply device 50 to supply the yarn supply package P1 to the peg 24 will be described. The supply device 50 advances a part of the second slide portion 51a of the second support mechanism 51 by the second supply drive mechanism 52 with respect to the peg 24 from which the yarn supply bobbin B1 has been removed, and positions the package support members 25a, 25b of the peg 24 in the hollow portion of the yarn supply package P1. When the package support members 25a, 25b of the peg 24 are positioned in the hollow portion of the yarn supply package P1, the supply device 50 swings the second slide portion 51a downward by the second supply drive mechanism 52 to tilt the second package support member 51b with respect to the horizontal direction. As a result, the package support members 25a, 25b of the peg 24 come into contact with the yarn supply package P1, so that the yarn supply package P1 is supported by the peg 24, and the second package support member 51b and the yarn supply package P1 are separated from each other. The supply device 50 retracts a part of the second slide portion 51a of the second support mechanism 51 by the second supply drive mechanism 52. In this way, the supply device 50 attaches the yarn supply package P1 to the peg 24.

The yarn joining device 60 joins the yarn Y of the yarn supply package P1 supported by the first peg 24a to the yarn Y of the yarn supply package P1 supported by the second peg 24b. As shown in Figures 12, 13, and 14, the yarn joining device 60 includes a capture and guide mechanism 61, a first rotation mechanism (operation mechanism) 62, a second rotation mechanism (operation mechanism) 63, and a yarn joining mechanism 64.

The yarn joining device 60 is movable by a moving mechanism (not shown) in the opposing direction (Y direction) between the replacement unit 33 and the yarn supplying unit 5. The yarn joining device 60 moves between a standby position where the yarn joining device 60 is disposed within the base 34 and a yarn joining position where the yarn joining device 60 moves toward the yarn supplying unit 5 and advances outside the base 34.

The catching and guiding mechanism 61 catches the yarn Y of the yarn supply package P1 and guides the yarn Y to the yarn joining mechanism 64. The catching and guiding mechanism 61 catches the first yarn end Y1 of the yarn Y of the yarn supply package P1 supported by one peg 24 and the second yarn end Y2 of the yarn Y of the yarn supply package P1 supported by the other peg 24, and guides them to the yarn joining mechanism 64. The catching and guiding mechanism 61 has a suction portion 61a and a yarn joining arm portion 61b.

The suction section 61a sucks and captures the yarn Y. The suction section 61a has a suction pipe 61c, a suction nozzle 61d, and a hook section 61e. The suction nozzle 61d is provided at the tip of the suction pipe 61c. The suction nozzle 61d sucks the yarn Y. A negative pressure source (not shown) is connected to the suction pipe 61c. This generates a suction flow in the suction nozzle 61d. The base end side of the suction pipe 61c is connected to the yarn joining arm section 61b. The hook section 61e is provided at the tip of the suction pipe 61c and in a position facing away from the suction nozzle 61d. The hook section 61e engages the yarn Y intertwined by the yarn joining device 60. The yarn joining arm section 61b moves the suction section 61a. The yarn joining arm section 61b is configured to include a link mechanism and multiple motors. The yarn joining arm 61b is supported by a bracket 61f.

The first rotation mechanism 62 and the second rotation mechanism 63 each operate the peg 24 to rotate the yarn supply package P1. When the yarn Y is guided to the yarn joining mechanism 64 by the capture and guide mechanism 61, the first rotation mechanism 62 and the second rotation mechanism 63 each rotate the yarn supply package P1 to unwind the yarn Y from the yarn supply package P1.

The first rotation mechanism 62 operates the first peg 24a. The first rotation mechanism 62 has a first thread joining driver 62a, a first motor 62b, and a first thread joining arm 62c. The first thread joining driver 62a is rotatably supported by the first thread joining arm 62c. The first thread joining driver 62a is provided with a first driven pulley 62d. The first motor 62b is fixed to the first thread joining arm 62c. The first drive pulley 62e is connected to the output shaft of the first motor 62b. The first motor 62b drives the first drive pulley 62e to rotate around its axis. A first power transmission belt 62f is stretched between the first driven pulley 62d and the first drive pulley 62e. As a result, the first thread joining driver 62a rotates due to the rotation drive of the first motor 62b.

The second rotation mechanism 63 operates the second peg 24b. The second rotation mechanism 63 has a second thread joining driver 63a, a second motor 63b, and a second thread joining arm 63c. The second thread joining driver 63a is rotatably supported by the second thread joining arm 63c. The second thread joining driver 63a is provided with a second driven pulley 63d. The second motor 63b is fixed to the second thread joining arm 63c. The second drive pulley 63e is connected to the output shaft of the second motor 63b. The second motor 63b drives the second drive pulley 63e to rotate around its axis. A second power transmission belt 63f is stretched between the second driven pulley 63d and the second drive pulley 63e. As a result, the second thread joining driver 63a rotates due to the rotation drive of the second motor 63b.

The yarn joining mechanism 64 performs yarn joining. The yarn joining mechanism 64 has a splicer 66, a first guide mechanism 67, and a second guide mechanism 68.

The splicer 66 includes a yarn splicing unit 66a and a pair of clamping mechanisms 66b, 66c. The yarn splicing unit 66a intertwines the yarn Y of the yarn supply package P1 supported by the first peg 24a with the yarn Y of the yarn supply package P1 supported by the second peg 24b. The clamping mechanisms 66b, 66c are provided in positions that clamp the yarn splicing unit 66a. The clamping mechanisms 66b, 66c clamp the yarn Y that is inserted into the chamber of the yarn splicing unit 66a.

12 and 13, the first guide mechanism 67 engages and guides the yarn Y. The first guide mechanism 67 has a first hook 67a, a second hook 67b, and a third hook 67c. The first hook 67a, the second hook 67b, and the third hook 67c are arranged to be able to swing. The first hook 67a is provided with a potentiometer (not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls the operation of the first motor 62b of the first rotation mechanism 62 based on the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the rotation amount (payout amount) of the yarn supply package P1 based on the detection result of the potentiometer, and pulls out the yarn Y from the yarn supply package P1 with a predetermined tension.

The second guide mechanism 68 engages and guides the yarn Y. The second guide mechanism 68 has a first hook 68a, a second hook 68b, and a third hook 68c. The first hook 68a, the second hook 68b, and the third hook 68c are arranged to be able to swing. The first hook 68a is provided with a potentiometer (not shown) that detects the tension of the yarn Y. The yarn joining device 60 controls the operation of the second motor 63b of the second rotation mechanism 63 based on the detection result of the potentiometer. That is, the yarn joining device 60 adjusts the rotation amount (payout amount) of the yarn supply package P1 based on the detection result of the potentiometer, and pulls out the yarn Y from the yarn supply package P1 with a predetermined tension.

The yarn joining operation of the yarn joining device 60 will be described. Specifically, an example will be described in which the yarn joining device 60 joins a first yarn end Y1 on the outer layer side of the yarn supply package P1 supported by the first peg 24a to a second yarn end Y2 on the inner layer side of the yarn supply package P1 supported by the second peg 24b.

When the yarn joining device 60 starts the yarn joining operation, as shown in FIG. 14, the first rotation mechanism 62 operates the first peg 24a and the second rotation mechanism 63 operates the second peg 24b, and rotates the adapter 10 to a position where the suction part 61a can capture the first yarn end Y1 and the second yarn end Y2. Specifically, the first rotation mechanism 62 engages the first yarn joining driver 62a with the first wheel 25j of the first peg 24a and drives the first motor 62b to rotate the first yarn joining driver 62a. Similarly, the second rotation mechanism 63 engages the second yarn joining driver 63a with the first wheel 25j of the second peg 24b and drives the second motor 63b to rotate the second yarn joining driver 63a. When the first yarn splicing driver 62a and the second yarn splicing driver 63a rotate, the yarn supply package P1 supported by the first peg 24a and the second peg 24b rotates, and the adapter 10 rotates accordingly. The yarn splicing device 60 detects a detection body (not shown) provided on the adapter 10 with a sensor (not shown), and controls the first motor 62b and the second motor 63b based on the detection result of the sensor to rotate the adapter 10 to a predetermined position.

When the yarn joining device 60 rotates the adapter 10, it activates the yarn joining arm 61b of the capture and guide mechanism 61, and the suction part 61a captures the first yarn end Y1 from the adapter 10 of the yarn supply package P1 supported by the first peg 24a, and captures the second yarn end Y2 from the adapter 10 of the yarn supply package P1 supported by the second peg 24b. At this time, the yarn joining device 60 operates the first peg 24a by the first rotation mechanism 62, and operates the second peg 24b by the second rotation mechanism 63 to rotate the yarn supply package P1. As a result, the yarn Y is pulled out from the yarn supply package P1 with a predetermined tension.

The yarn joining device 60 uses the suction unit 61a to hook the yarn Y having the first yarn end Y1 onto the first guide mechanism 67 and guide the yarn Y to the splicer 66, and hooks the yarn Y having the second yarn end Y2 onto the second guide mechanism 68 and guides the yarn Y to the splicer 66. After guiding the yarn Y to the splicer 66, the yarn joining device 60 causes the splicer 66 to perform a yarn joining operation. As a result, the yarn joining device 60 joins the first yarn end Y1 on the outer layer side of the yarn supply package P1 supported by the first peg 24a to the second yarn end Y2 on the inner layer side of the yarn supply package P1 supported by the second peg 24b.

The moving device 70 rotates and moves the collection device 40, the supply device 50, and the yarn joining device 60. The moving device 70 moves each of the collection device 40, the supply device 50, and the yarn joining device 60 to a working position relative to the peg 24. The moving device 70 also moves the collection device 40 and the supply device 50 to a working position relative to the holding unit 32. As shown in FIG. 9, the moving device 70 has a rotation support unit 71 and a replacement unit drive unit 72.

The rotation support part 71 supports the recovery device 40, the supply device 50, and the yarn joining device 60. The rotation support part 71 is provided on the base 34 so as to be freely rotatable around a rotation axis extending in the vertical direction. The rotation support part 71 supports the recovery device 40, the supply device 50, and the yarn joining device 60 so that, as viewed from the direction of the rotation axis of the rotation support part 71, the recovery device 40, the supply device 50, and the yarn joining device 60 are arranged so that they each face three different directions.

The rotation support part 71 has a wheel (not shown). The wheel is a Geneva wheel that constitutes a Geneva mechanism. The replacement unit drive part 72 rotates the rotation support part 71. The replacement unit drive part 72 is a Geneva driver that constitutes a Geneva mechanism. The replacement unit drive part 72 rotates by the rotation drive of a motor (not shown). In the moving device 70, the rotation support part 71 rotates by the drive of the replacement unit drive part 72.

The moving device 70 stops the rotating support unit 71 at seven locations. The moving device 70 stops the rotating support unit 71 at a position where the recovery device 40 recovers the yarn supplying bobbin B1 from the first peg 24a, a position where the recovery device 40 recovers the yarn supplying bobbin B1 from the second peg 24b, a position where the supplying device 50 supplies the yarn supplying package P1 to the first peg 24a, a position where the supplying device 50 supplies the yarn supplying package P1 to the second peg 24b, a position where the yarn joining device 60 performs yarn joining, a position where the supplying device 50 acquires the yarn supplying package P1 from the holding unit 32, and a position where the recovery device 40 supplies the yarn supplying bobbin B1 to the holding unit 32.

Next, we will explain the splicer 66 in detail.

As shown in FIG. 15, the splicer 66 splices a first yarn YA (see FIG. 21(a)), which is a yarn (one yarn) Y of the yarn supply package P1 supported by the first peg 24a, and a second yarn YB (see FIG. 21(a)), which is a yarn (the other yarn) Y of the yarn supply package P1 supported by the second peg 24b. The splicer 66 is a synthetic yarn splicer. The splicer 66 includes a frame 102, a yarn splicing section 66a, a pair of clamping mechanisms 66b, 66c, a shutter mechanism 140, a cylindrical cam 150, and a motor 160.

The frame 102 is a member that holds each part of the splicer 66. The frame 102 is composed of, for example, a plurality of plate-shaped members. The yarn splicing section 66a is fixed to the frame 102. As shown in Figs. 15 and 16, the yarn splicing section 66a has a yarn splicing nozzle 112, a slit 113, a chamber (passage) 114, and an air flow path 116. The yarn splicing nozzle 112 is a block body formed of a metal or ceramic material. The slit 113 is provided in the yarn splicing nozzle 112. The slit 113 is connected to the chamber 114, and is a gap that allows the first yarn YA and the second yarn YB to be inserted into the chamber 114. The slit 113 is formed across the upper surface of the yarn splicing nozzle 112 and the chamber 114. An inclined surface 115 that guides the yarn to the slit 113 is provided at the upper part of the slit 113.

The chamber 114 is a passage through which the first yarn YA and the second yarn YB are inserted. The chamber 114 penetrates from one side to the other side of the yarn joining nozzle 112. The penetration direction of the chamber 114 (hereinafter also simply referred to as the "penetration direction") is perpendicular to the insertion direction (hereinafter also simply referred to as the "insertion direction") in which the first yarn YA and the second yarn YB are inserted into the slit 113. The chamber 114 forms a space through which the first yarn YA and the second yarn YB can be inserted. The chamber 114 is circular in a cross-sectional view perpendicular to the penetration direction.

The air flow path 116 distributes air to be supplied to the chamber 114. The air flow path 116 has an injection hole 116a that opens into the chamber 114. The injection hole 116a connects the air flow path 116 to the chamber 114. Air is injected from the injection hole 116a into the chamber 114. A connection part 118 is provided on the upstream side of the air flow path 116 (the side opposite the injection hole 116a). A supply pipe 119 that supplies air is connected to the connection part 118.

As shown in Figures 15, 19, and 20, one clamping mechanism 66b has a support part 122, a first clamping part 123, a third clamping part 127, and a first cutter 129. The other clamping mechanism 66c has a support part 132, a second clamping part 133, a fourth clamping part 137, and a second cutter 139.

The support part 122 has a rectangular parallelepiped (prism-like) outer shape. The support part 122 supports the first clamping part 123, the third clamping part 127, and the first cutter 129. The support part 122 is swingably mounted on the frame 102. A shaft 121 perpendicular to the penetration direction is provided at one end of the support part 122 in the longitudinal direction. The shaft 121 is fixed to the frame 102. The first clamping part 123 and the third clamping part 127 are housed from the center to the other end in the longitudinal direction of the support part 122.

The support portion 122 is provided with a recess 125. The recess 125 is provided at the other end of the support portion 122. The recess 125 exposes a portion of the first clamping portion 123 and the third clamping portion 127. Such a support portion 122 swings around the axis 121 so that the first clamping portion 123 and the third clamping portion 127 move along the penetration direction (described in detail below).

The first clamping portion 123 is disposed on one side of the yarn joint portion 66a in the through-through direction. The first clamping portion 123 is cylindrical and is formed of a metal such as SUS having wear resistance. The first clamping portion 123 clamps (clamps) the first yarn YA and the second yarn YB along a direction perpendicular to the through-through direction and perpendicular to the axial direction of the shaft 121. Hereinafter, the direction perpendicular to the through-through direction and perpendicular to the axial direction of the shaft 121 is also referred to as the "clamping direction". The first clamping portion 123 includes a fixed-side column 123x and a movable-side column 123y. The fixed-side column 123x and the movable-side column 123y are disposed so that their end faces face each other in the clamping direction. The fixed-side column 123x is fixed to the support portion 132. The movable-side column 123y is provided on the support portion 132 so as to be movable along the clamping direction.

In the first clamping section 123, the movable column 123y moves closer to the fixed column 123x, and the end face of the fixed column 123x comes into contact with the end face of the movable column 123y, thereby clamping the first yarn YA and the second yarn YB between them. In the first clamping section 123, the movable column 123y moves away from the fixed column 123x, and a gap is formed between the end face of the fixed column 123x and the end face of the movable column 123y, thereby releasing the clamping. Such clamping and release of the clamping by the first clamping section 123 can be achieved by various known techniques, for example, by an air drive or cam mechanism using air supplied from the outside. The first clamping section 123 clamps the first yarn YA and the second yarn YB by biasing them in the clamping direction by a biasing member such as a spring (not shown).

The third clamping portion 127 is disposed on one side of the first clamping portion 123 in the penetration direction. The third clamping portion 127 is cylindrical and is formed of a metal such as SUS having wear resistance. The third clamping portion 127 clamps the first thread YA along the clamping direction. The third clamping portion 127 includes a fixed side column 127x and a movable side column 127y. The fixed side column 127x and the movable side column 127y are disposed so that their end faces face each other in the clamping direction. The fixed side column 127x is fixed to the support portion 132. The movable side column 127y is provided on the support portion 132 so as to be movable along the clamping direction.

In the third clamping section 127, the movable column 127y moves closer to the fixed column 127x, and the end face of the fixed column 127x and the end face of the movable column 127y come into contact with each other, thereby clamping the first yarn YA between them. In the third clamping section 127, the movable column 127y moves away from the fixed column 127x, and a gap is formed between the end face of the fixed column 127x and the end face of the movable column 127y, thereby releasing the clamping. Such clamping and release of the clamping by the third clamping section 127 can be achieved by various known techniques, for example, by an air drive or cam mechanism using air supplied from the outside. The third clamping section 127 clamps the first yarn YA by biasing it in the clamping direction with a biasing member such as a spring (not shown). The force with which the third clamping section 127 clamps the first yarn YA is smaller than the force with which the first clamping section 123 clamps the first yarn YA and the second yarn YB.

The first cutter 129 cuts the second yarn YB at a position on one side of the first clamping portion 123 in the penetration direction. The first cutter 129 is provided between the first clamping portion 123 and the third clamping portion 127 in the support portion 132 so as to be movable along the clamping direction. The first cutter 129 moves to a position where it can cut the second yarn YB in conjunction with the operation of the first clamping portion 123 to clamp the first yarn YA and the second yarn YB. Specifically, the first cutter 129 is connected to the movable side column body 123y of the first clamping portion 123. The first cutter 129 is positioned so as to straddle the second yarn YB when the first clamping portion 123 is clamping the first yarn YA and the second yarn YB. In this case, when the second yarn YB is moved to the side away from the first clamping portion 123 in the insertion direction, the second yarn YB is cut by the first cutter 129. On the other hand, when the first clamping part 123 releases the clamping of the first yarn YA and the second yarn YB, the first cutter 129 is positioned away from the second yarn YB in the clamping direction.

The support part 132 has a rectangular parallelepiped (prism-like) outer shape. The support part 132 supports the second clamping part 133, the fourth clamping part 137, and the second cutter 139. The support part 132 is provided on the frame 102 so as to be able to swing. A shaft 131 perpendicular to the penetration direction is provided at one end of the longitudinal direction of the support part 132. The shaft 131 is fixed to the frame 102. The second clamping part 133 and the fourth clamping part 137 are housed from the center to the other end in the longitudinal direction of the support part 132.

The support portion 132 is provided with a recess 135. The recess 135 is provided at the other end of the support portion 132. The recess 135 exposes a portion of the second clamping portion 133 and the fourth clamping portion 137. Such a support portion 132 swings about the axis 121 so that the second clamping portion 133 and the fourth clamping portion 137 move along the penetration direction (described in detail below).

The second clamping portion 133 is disposed on the other side of the yarn joining portion 66a in the penetration direction. The second clamping portion 133 is cylindrical and is formed of a metal such as SUS having wear resistance. The second clamping portion 133 clamps the first yarn YA and the second yarn YB along the clamping direction. The second clamping portion 133 includes a fixed side column 133x and a movable side column 133y. The fixed side column 133x and the movable side column 133y are disposed so that their end faces face each other in the clamping direction. The fixed side column 133x is fixed to the support portion 132. The movable side column 133y is provided on the support portion 132 so as to be movable along the clamping direction.

In the second clamping section 133, the movable column 133y moves closer to the fixed column 133x, and the end face of the fixed column 133x and the end face of the movable column 133y come into contact with each other, thereby clamping the first yarn YA and the second yarn YB between them. In the second clamping section 133, the movable column 133y moves away from the fixed column 133x, and a gap is formed between the end face of the fixed column 133x and the end face of the movable column 133y, thereby releasing the clamping. Such clamping and release of the clamping by the second clamping section 133 can be achieved by various known techniques, for example, by an air drive or cam mechanism using air supplied from the outside. The second clamping section 133 clamps the first yarn YA and the second yarn YB by biasing them in the clamping direction by a biasing member such as a spring (not shown). The force with which the second clamping section 133 clamps the first yarn YA and the second yarn YB is equal to the force with which the first clamping section 123 clamps the first yarn YA and the second yarn YB.

The fourth clamping portion 137 is disposed on the other side of the second clamping portion 133 in the penetration direction. The fourth clamping portion 137 is cylindrical and is formed of a metal such as SUS having wear resistance. The fourth clamping portion 137 clamps the second thread YB along the clamping direction. The fourth clamping portion 137 includes a fixed side column 137x and a movable side column 137y. The fixed side column 137x and the movable side column 137y are disposed so that their end faces face each other in the clamping direction. The fixed side column 137x is fixed to the support portion 132. The movable side column 137y is provided on the support portion 132 so as to be movable along the clamping direction.

In the fourth clamping section 137, the movable column 137y moves closer to the fixed column 137x, and the end face of the fixed column 137x and the end face of the movable column 137y come into contact with each other, thereby clamping the second yarn YB between them. In the fourth clamping section 137, the movable column 137y moves away from the fixed column 137x, and a gap is formed between the end face of the fixed column 137x and the end face of the movable column 137y, thereby releasing the clamping. Such clamping and release of the clamping by the fourth clamping section 137 can be achieved by various known techniques, for example, by an air drive or cam mechanism using air supplied from the outside. The fourth clamping section 137 clamps the second yarn YB by biasing it in the clamping direction with a biasing member such as a spring (not shown). The force with which the fourth clamping section 137 clamps the second yarn YB is smaller than the force with which the second clamping section 133 clamps the first yarn YA and the second yarn YB. The force with which the fourth clamping section 137 clamps the second yarn YB is equal to the force with which the third clamping section 127 clamps the first yarn YA.

The second cutter 139 cuts the first thread YA at a position on the other side of the second clamping section 133 in the penetration direction. The second cutter 139 is provided between the second clamping section 133 and the fourth clamping section 137 in the support section 132 so as to be movable along the clamping direction. The second cutter 139 moves to a position where it can cut the first thread YA in conjunction with the operation of the second clamping section 133 to clamp the first thread YA and the second thread YB. Specifically, the second cutter 139 is connected to the movable side column body 133y of the second clamping section 133 as shown in Figures 18(a) and 18(b). The second cutter 139 is positioned so as to straddle the first thread YA when the second clamping section 133 is clamping the first thread YA and the second thread YB. In this case, when the first yarn YA is moved away from the second clamping unit 133 in the insertion direction, the first yarn YA is cut by the second cutter 139. Meanwhile, when the second clamping unit 133 releases the clamping of the first yarn YA and the second yarn YB, the second cutter 139 is positioned away from the first yarn YA in the clamping direction.

As shown in Figures 15, 17, and 20, the shutter mechanism 140 constitutes a shutter section that can close at least a part of the chamber 114 of the yarn joining section 66a. When the first yarn YA and the second yarn YB are intertwined at the yarn joining section 66a, the shutter mechanism 140 closes either one of the first clamping section 123 and the second clamping section 133 in the chamber 114 that is farther from the yarn joining section 66a. The shutter mechanism 140 includes a first shutter 141 arranged on one side of the yarn joining section 66a in the penetration direction, and a second shutter 142 arranged on the other side of the yarn joining section 66a in the penetration direction.

The first shutter 141 can close one side of the chamber 114 in the penetration direction. The second shutter 142 can close the other side of the chamber 114 in the penetration direction. The first shutter 141 and the second shutter 142 are plate-shaped. The first shutter 141 opens and closes between an open state in which one side of the chamber 114 in the penetration direction is open, and a closed state in which the tip of the first shutter 141 blocks one side of the chamber 114 in the penetration direction. The second shutter 142 opens and closes between an open state in which the other side of the chamber 114 in the penetration direction is open, and a closed state in which the tip of the second shutter 142 blocks the other side of the chamber 114 in the penetration direction. Such a shutter mechanism 140 closes either the first shutter 141 or the second shutter 142 when the yarn is intertwined by the yarn joining portion 66a (details will be described later).

The cylindrical cam 150 has a cylindrical outer shape. The cylindrical cam 150 is supported by the frame 102 so as to be rotatable about a rotation axis along the penetration direction. A first cam groove 151 and a second cam groove 152 are formed on the outer circumferential surface of the cylindrical cam 150. A shutter annular groove 153 is formed between the first cam groove 151 and the second cam groove 152 on the outer circumferential surface of the cylindrical cam 150.

As shown in FIG. 19, a first clamping follower (first follower) 154 is engaged with the first cam groove 151. The first clamping follower 154 is connected to the center in the longitudinal direction of the support part 122 of the clamping mechanism 66b. The first clamping follower 154 follows along the first cam groove 151. The first cam groove 151 rotates the cylindrical cam 150 to cause the first clamping follower 154 to follow as desired, thereby realizing the movement of the support part 122 described below.

A second clamping follower (second follower) 155 is engaged with the second cam groove 152. The second clamping follower 155 is connected to the center of the support part 132 of the clamping mechanism 66c in the longitudinal direction. The second clamping follower 155 follows along the second cam groove 152. The second cam groove 152 rotates the cylindrical cam 150 to cause the second clamping follower 155 to follow as desired, thereby realizing the movement of the support part 132 described below.

As shown in FIG. 17, a first shutter follower (follower) 157 and a second shutter follower (follower) 158 are engaged with the shutter annular groove 153. The first shutter follower 157 and the second shutter follower 158 are attached to the frame 102 so as to be swingable about an axis 159.

One side of the first shutter follower 157 is connected to the base end of the first shutter 141 of the shutter mechanism 140. The other side of the first shutter follower 157 abuts against the bottom surface of the shutter annular groove 153. One side of the second shutter follower 158 is connected to the base end of the second shutter 142 of the shutter mechanism 140. The other side of the second shutter follower 158 abuts against the bottom surface of the shutter annular groove 153. The first shutter follower 157 and the second shutter follower 158 move according to the height of the bottom surface of the shutter annular groove 153. The first shutter follower 157 and the second shutter follower 158 are biased by a torsion spring 159a so as to swing in the opening direction in which the first shutter 141 and the second shutter 142 are in the open state.

A raised portion 156 is formed on the bottom surface of the shutter annular groove 153. When the first shutter follower 157 and the second shutter follower 158 ride up on the raised portion 156, the first shutter follower 157 and the second shutter follower 158 each swing in the closing direction (the swing direction opposite to the opening direction), and the first shutter 141 and the second shutter 142 each become closed. When the first shutter follower 157 and the second shutter follower 158 each abut on a portion other than the raised portion 156 on the bottom surface of the shutter annular groove 153, the first shutter follower 157 and the second shutter follower 158 each swing in the opening direction, and the first shutter 141 and the second shutter 142 each become open. The annular shutter groove 153 rotates the cylindrical cam 150 to cause the first shutter follower 157 and the second shutter follower 158 to swing as desired, allowing the first shutter 141 and the second shutter 142, which will be described later, to open and close.

The motor 160 is a drive source that rotates the cylindrical cam 150. The motor 160 is supported by the frame 102. The rotation of the motor 160 is controlled by a control unit (not shown). In the above, the cylindrical cam 150, the first clamping follower 154, the second clamping follower 155, and the motor 160 constitute a moving mechanism 170 that moves each of the first clamping unit 123 and the second clamping unit 133 along the penetration direction. The cylindrical cam 150 constitutes a shutter cam. The cylindrical cam 150, the first shutter follower 157, the second shutter follower 158, and the motor 160 constitute an opening/closing mechanism 180 that opens and closes the shutter mechanism 140.

Next, an example of the operation of the splicer 66 will be described with reference to Figures 20(a) to 28.

In addition, in Figures 20(a) to 28, for convenience, the movement of the support parts 122, 132 due to the swinging of the clamping mechanisms 66b, 66c is shown as a linear movement along the penetration direction. In the following explanation, for convenience, one side in the penetration direction is referred to as the "left side" and the other side in the penetration direction is referred to as the "right side". The movement of the support part 122 corresponds to the movement of the first clamping part 123 and the third clamping part 127, and the movement of the support part 132 corresponds to the movement of the second clamping part 133 and the fourth clamping part 137.

As shown in FIG. 20(a), in the initial state, the first to fourth clamping units 123, 133, 127, 137 are in a released clamping state, the support unit 122 and the yarn joining unit 66a are close to each other, and the support unit 132 and the yarn joining unit 66a are close to each other. The first shutter 141 and the second shutter 142 are in an open state. In the initial state, for example, the first yarn YA and the second yarn YB are captured by the capture and guide mechanism (yarn capture and guide unit) 61 and inserted into the chamber 114, and the first yarn YA and the second yarn YB are inserted between the fixed side columns 123x, 133x, 127x, 137x and the movable side columns 123y, 133y, 127y, 137y of the first to fourth clamping units 123, 133, 127, 137.

As shown in FIG. 20(b), the first clamping portion 123 and the second clamping portion 133 are in a clamping state, and the first thread YA and the second thread YB are clamped by the first clamping portion 123 and the second clamping portion 133, respectively. At this time, the first cutter 129 and the second cutter 139 are interlocked, and the first cutter 129 moves onto the second thread YB, and the second cutter 139 moves onto the first thread YA.

As shown in FIG. 21(a), the end of the first yarn YA is lifted away from the second clamping portion 133, and the end of the second yarn YB is lifted away from the first clamping portion 123. As a result, the first yarn YA is cut by the second cutter 139, and the second yarn YB is cut by the first cutter 129.

As shown in FIG. 21(b), the third clamping portion 127 and the fourth clamping portion 137 are in a clamping state, the first yarn YA is clamped by the third clamping portion 127, and the second yarn YB is clamped by the fourth clamping portion 137. As shown in FIG. 22(a), each of the support portions 122 and 132 is moved away from the yarn joining portion 66a. As a result, in a state in which the first clamping portion 123 and the second clamping portion 133 are clamping the first yarn YA and the second yarn YB, the first clamping portion 123 and the second clamping portion 133 move along the penetration direction so that the distance between them (the distance in the penetration direction) increases, and the first yarn YA and the second yarn YB between the first clamping portion 123 and the second clamping portion 133 are stretched, for example, to 1.6 times (stretching process).

As shown in FIG. 22(b), the support parts 122 and 132 are moved closer to the yarn joining part 66a. As a result, while the first and second clamping parts 123 and 133 are clamping the first and second yarns YA and YB, respectively, the first and second clamping parts 123 and 133 are moved along the penetration direction so that the distance between them is narrowed, and the stretched parts of the first and second yarns YA and YB stretched by the stretching process are loosened. After that, or simultaneously in parallel with that, the stretched parts of the first and second yarns YA and YB are entangled by the yarn joining part 66a (first entanglement process). As shown in FIG. 23(a), the support part 122 is moved to the left, and the slack in the entanglement part M1 of the first and second yarns YA and YB formed by the first entanglement process is removed.

As shown in FIG. 23(b), the clamping of the first yarn YA and the second yarn YB by the second clamping portion 133 is released. The support portion 122 is further moved to the left, and the first clamping portion 123 and the third clamping portion 127 are moved to the left. As a result, the first clamping portion 123 and the third clamping portion 127 pull the first yarn YA and the second yarn YB, and the first yarn YA and the second yarn YB are shifted to the left. That is, in a state in which the first clamping portion 123 clamps the first yarn YA and the second yarn YB and the clamping of the second clamping portion 133 is released, the first clamping portion 123 is moved to the left, and the first portion K1 of the first yarn YA and the second yarn YB that was clamped by the second clamping portion 133 before the release is moved to the left (first movement process). As a result, the first portion K1 is inserted into the chamber 114 of the yarn joining portion 66a.

As shown in FIG. 24(a), the support portion 122 that was moved to the left is returned to the right by an amount less than the amount of movement. This loosens the entangled portion M1 and the first portion K1. The first shutter 141 is closed and the second shutter 142 is open. As shown in FIG. 24(b), the first portion K1 of the first yarn YA and the second yarn YB is entangled by the yarn joining portion 66a to form the entangled portion M2 (second entanglement process). In the second entanglement process, the left side of the chamber 114 (either the first clamping portion 123 or the second clamping portion 133, which is farther from the yarn joining portion 66a) is closed by the first shutter 141 of the shutter mechanism 140.

As shown in FIG. 25(a), the first shutter 141 is opened and the support portion 122 is moved to the left to remove slack in the entangled portions M1 and M2. As shown in FIG. 25(b), the second clamping portion 133 is placed in a clamping state and the support portions 122 and 132 are simultaneously moved to the right, so that the first to fourth clamping portions 123, 133, 127, and 137 are simultaneously moved to the right.

As shown in FIG. 26(a), the first clamping portion 123 releases the clamping of the first yarn YA and the second yarn YB. The support portion 132 is further moved to the right, and the second clamping portion 133 and the fourth clamping portion 137 are moved to the right. As a result, the second clamping portion 133 and the fourth clamping portion 137 pull the first yarn YA and the second yarn YB, and the first yarn YA and the second yarn YB are shifted to the right. That is, in a state in which the second clamping portion 133 clamps the first yarn YA and the second yarn YB and the clamping of the first clamping portion 123 is released, the second clamping portion 133 is moved to the right, and the second portion K2 of the first yarn YA and the second yarn YB that was clamped by the first clamping portion 123 before the release is moved to the right (second movement process). As a result, the second portion K2 is inserted into the chamber 114 of the yarn joining portion 66a.

As shown in FIG. 26(b), the support portion 132 that was moved to the right is returned to the left by an amount less than the amount of movement. This causes the entangled portions M1, M2 and the second portion K2 to slacken. As shown in FIG. 27(a), the first shutter 141 is opened and the second shutter 142 is closed. As shown in FIG. 27(b), the yarn joining portion 66a entangles the first yarn YA and the second portion K2 of the second yarn YB to form the entangled portion M3 (third entanglement process). In the third entanglement process, the right side of the chamber 114 (either the first clamping portion 123 or the second clamping portion 133, which is farther from the yarn joining portion 66a) is blocked by the second shutter 142 of the shutter mechanism 140. Then, the second shutter 142 is opened.

As shown in FIG. 28, each of the support parts 122 and 132 is moved to a position that is equal to the amount of extension from the extension process relative to its initial position. Finally, the first to fourth clamping parts 123, 133, 127, and 137 are all released from clamping, and the process is completed.

However, during yarn splicing, for example, due to the influence of air (fluid) injected from the injection hole 116a, the first yarn YA and the second yarn YB may easily fly out from either the side of the first clamping part 123 or the second clamping part 133 in the chamber 114 that is far from the yarn splicing part 66a (hereinafter, simply referred to as the "far side"). Therefore, in the splicer 66, by closing the far side of the chamber 114 with the shutter mechanism 140 during yarn splicing, for example, air from the injection hole 116a is actively allowed to flow to the opposite side of the far side of the chamber 114, and the air can be used to prevent the first yarn YA and the second yarn YB from flying out from the far side of the chamber 114. In other words, the first yarn YA and the second yarn YB can be prevented from flying out of the chamber 114 of the yarn splicing part 66a during yarn splicing.

The splicer 66 includes an opening/closing mechanism 180 that opens and closes the shutter mechanism 140. In this configuration, the shutter mechanism 140 can be opened and closed using the opening/closing mechanism 180.

In the splicer 66, the opening and closing mechanism 180 has a cylindrical cam 150, first and second shutter followers 157, 158 that are connected to the shutter mechanism 140 and follow along the bottom surface of the shutter annular groove 153 of the cylindrical cam 150, and a motor 160 that rotates the cylindrical cam 150. In this case, the opening and closing mechanism 180 as a cam mechanism can open and close the shutter mechanism 140.

In the splicer 66, the shutter mechanism 140 includes a first shutter 141 arranged on one side of the yarn splicing section 66a in the penetration direction, and a second shutter 142 arranged on the other side of the yarn splicing section 66a in the penetration direction. In this case, the far side of the chamber 114 can be blocked by closing either the first shutter 141 or the second shutter 142.

The splicer 66 includes a moving mechanism 170 that moves each of the first clamping portion 123 and the second clamping portion 133 along the penetration direction. The moving mechanism 170 performs a first movement process in which, in a state in which the first clamping portion 123 clamps the first yarn YA and the second yarn YB and the clamping of the second clamping portion 133 is released, the first clamping portion 123 moves to one side in the penetration direction, and the first portion K1 of the first yarn YA and the second yarn YB that was clamped by the second clamping portion 133 before the release is moved to one side in the penetration direction. The yarn joining portion 66a performs a first intertwining process in which the first yarn YA and the second yarn YB are intertwined by the yarn joining portion 66a before the first movement process, and a second intertwining process in which the first portion K1 of the first yarn YA and the second yarn YB are intertwined after the first movement process. In the shutter mechanism 140, the first shutter 141 is closed and the second shutter 142 is open during the second intertwining process. This prevents the first yarn YA and the second yarn YB from popping out of the chamber 114 of the yarn joining section 66a when the second intertwining process is performed.

In the splicer 66, after the second intertwining process, the moving mechanism 170 performs a second movement process in which, in a state in which the second clamping section 133 clamps the first yarn YA and the second yarn YB and the clamping of the first clamping section 123 is released, the second clamping section 133 is moved to the other side in the penetration direction, and the second portion K2 of the first yarn YA and the second yarn YB that was clamped by the first clamping section 123 before the release is moved to the other side in the penetration direction. After the second movement process, the yarn joining section 66a performs a third intertwining process in which the second portion K2 of the first yarn YA and the second yarn YB are intertwined. In the shutter mechanism 140, in the third intertwining process, the first shutter 141 is in an open state and the second shutter 142 is in a closed state. This makes it possible to prevent the first yarn YA and the second yarn YB from jumping out of the chamber 114 of the yarn joining section 66a when the third intertwining process is performed.

Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention.

In the above embodiment, the first to fourth clamping sections 123, 133, 127, 137 are not limited to a cylindrical shape and can have various shapes (e.g., a rectangular column shape) as long as they are capable of clamping the yarn Y. In the above embodiment, the moving mechanism 170 is not particularly limited and various known moving mechanisms may be used. In the above embodiment, the opening/closing mechanism 180 is not particularly limited and various known opening/closing mechanisms may be used. In the above embodiment, the shutter mechanism 140 has the first shutter 141 and the second shutter 142, but the shutter mechanism 140 may have at least one of the first shutter 141 and the second shutter 142.

In the above embodiment, the support parts 122, 132 swing around the shafts 121, 131, causing the first clamping part 123 and the second clamping part 133 to move along the penetration direction. However, the support parts 122, 132 may move toward each other and away from each other while remaining parallel to each other, for example. In the above embodiment, the diameter of the chamber 114 and the diameter of the injection hole 116a can be changed by replacing the yarn joining part 66a.

66... splicer (synthetic yarn splicer), 66a... yarn splicing section, 114... chamber (passage), 116a... injection hole, 121, 131... shaft, 123... first clamping section, 127... third clamping section, 129... first cutter, 133... second clamping section, 139... second cutter, 137... fourth clamping section, 140... shutter mechanism (shutter section), 141... first shutter, 142... second shutter, 150... cylindrical cam (shutter cam cam groove, 151...first cam groove, 152...second cam groove, 154...first clamping follower (first follower), 155...second clamping follower (second follower), 157...first shutter follower (follower), 158...second shutter follower (follower), 160...motor, 170...movement mechanism, 180...opening/closing mechanism, K1...first part, K2...second part, YA...first thread (one thread), YB...second thread (the other thread).

Claims (5)

A synthetic fiber splicer for splicing one synthetic fiber yarn to another synthetic fiber yarn,
a yarn joining portion including a passage that forms a space through which the one yarn and the other yarn can be inserted, and an injection hole that opens into the passage and injects a fluid, the yarn joining portion intertwining the one yarn and the other yarn that are inserted into the passage;
a first clamping portion disposed on one side of the yarn splicing portion in a direction in which the passage passes through, the first clamping portion clamping the one yarn and the other yarn;
a second clamping portion disposed on the other side of the yarn splicing portion in the through direction and configured to clamp the one yarn and the other yarn;
a shutter portion capable of closing at least a part of the passage of the yarn splicing portion;
an opening/closing mechanism for opening and closing the shutter portion ,
The shutter section closes either the first clamping section or the second clamping section in the passage, the side farther from the yarn joining section, when the one yarn and the other yarn are intertwined at the yarn joining section. 2. The synthetic yarn splicer according to claim 1 , wherein the opening and closing mechanism includes a shutter cam, a follower connected to the shutter portion and adapted to follow along the shutter cam, and a motor that drives and rotates the shutter cam. The shutter unit includes:
a first shutter that is arranged on one side of the yarn splice portion in the through-through direction and is capable of closing one side of the passage in the through-through direction;
The synthetic yarn splicer according to claim 1 or 2 , further comprising: a second shutter arranged on the other side of the yarn splicing portion in the through-through direction and capable of closing the other side of the passage in the through-through direction. a moving mechanism for moving each of the first clamping portion and the second clamping portion along the penetration direction,
The moving mechanism includes:
a first movement process is performed in which, in a state in which the first clamping unit clamps the one yarn and the other yarn and the clamping of the second clamping unit is released, the first clamping unit is moved to one side in the through-hole direction, and a first portion of the one yarn and the other yarn that was clamped by the second clamping unit before the release is moved to one side in the through-hole direction;
The yarn joining portion is
a first entanglement process for entangling the one yarn and the other yarn at the yarn joining portion before the first moving process;
After the first moving process, a second intertwining process is performed to intertwining the first portion of the one yarn and the other yarn;
The synthetic yarn splicer according to claim 3 , wherein in the shutter section, in the second entanglement treatment, the first shutter is in a closed state and the second shutter is in an open state. The moving mechanism includes:
a second movement process is performed in which, after the second intertwining process, the one yarn and the other yarn are clamped by the second clamping section and the clamping by the first clamping section is released, the second clamping section is moved to the other side in the penetration direction, and a second portion of the one yarn and the other yarn that was clamped by the first clamping section before the release is moved to the other side in the penetration direction;
The yarn joining portion is
After the second moving process, a third intertwining process is performed to intertwining the second portions of the one yarn and the other yarn;
The synthetic yarn splicer according to claim 4 , wherein in the shutter section, in the third intertwining treatment, the first shutter is in an open state and the second shutter is in a closed state.

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