TW201943901A - Synthetic yarn splicer - Google Patents

Abstract

A synthetic yarn splicer 1 includes a yarn splicing portion 10, a first clamping mechanism 20, and a second clamping mechanism 30. Each of the first clamping mechanism 20 and the second clamping mechanism 30 includes clamping portions 23 and 33 and support portions 22 and 32 that support the clamping portions 23 and 33, the support portions 22 and 32 include first contact surfaces 27b and 37b and second contact surfaces 27c and 37c which are disposed at a position interposing the clamping portions 23 and 33 in the facing direction of the first clamping mechanism 20 and the second clamping mechanism 30, and the second contact surfaces 27c and 37c are disposed between the yarn splicing portion 10 and the clamping portions 23 and 33 and are located above the first contact surfaces 27b and 37b.

Description

Splicer for synthetic fiber yarn

The invention relates to a splicer for synthetic fiber yarn.

As a conventional splicer for a synthetic fiber yarn, for example, a splicer for a synthetic fiber yarn described in Patent Document 1 (Japanese Patent Application Laid-Open No. 10-17214) is known. The splicer for synthetic fiber yarns described in Patent Document 1 is to pull the two ends of the synthetic fiber yarns in opposite directions and pull them into the air nozzle, and press the outside of the air nozzle at the end of the drawn yarn The two side portions move the pressed two side portions toward the inside of the air nozzle, thereby relaxing the end of the drawn yarn in the air nozzle, and splicing the yarn by the air flow in the air nozzle.

The splicer for synthetic fiber yarns is, for example, used in yarn winding machines for winding synthetic fibers to splice the ends of one yarn supplied to the bobbin and the beginning of another yarn supplied to the bobbin. In the yarn winding machine, the yarn is wound on a bobbin while tension is applied to the yarn to form a package. Therefore, the entangled portion of the yarns after being spun by the splicer with the synthetic fiber yarn is stretched when a tension is applied. In the yarn winding machine, when the entanglement part is unwound during the winding of the yarn, the winding operation must be temporarily stopped and the operation is performed, so the production efficiency is reduced. Therefore, a splicer for a synthetic fiber yarn is required to form a entangled portion having a tensile elongation capable of withstanding the winding tension.

An object of one aspect of the present invention is to provide a splicer for a synthetic fiber yarn capable of suppressing a decrease in the tensile elongation of the entangled portion.

A splicer for a synthetic fiber yarn according to one aspect of the present invention is a yarn splicer for splicing one yarn and the other yarn composed of synthetic fibers, and includes a yarn splicing section including one yarn and one A passage of a space through which one yarn can be inserted, and a spray hole that opens to the passage and sprays fluid; and a pair of clamping mechanisms, which are provided at a position across the passage of the yarn connection portion, and are inserted into one of the spaces. Each of the yarn of the other party and the yarn of the other party are clamped; and the pair of clamping mechanisms each have: a clamping section that clamps each of the yarn of one party and the yarn of the other party; and supports The support portion has a first abutment surface, a second abutment surface, and a second abutment surface, which are respectively disposed in the opposing direction of the pair of clamping mechanisms at a position across the clamping portion. It is arranged between the yarn joining portion and the clamping portion, and is located above the first contact surface.

In the splicer for a synthetic fiber yarn according to one aspect of the present invention, one of the yarns and the other yarn made of synthetic fibers swing in the passage using the clamping portion as a fixed point. In the splicer for synthetic fiber yarns, the second abutment surface is disposed between the yarn joining portion and the clamping portion, and is located above the first abutment surface. In this configuration, when one yarn and the other yarn are arranged, one yarn and the other yarn abut against at least the second by the weight of one yarn and the other yarn.面 butt. In this state, one yarn and the other yarn are held by the clamping portion. When a fluid is sprayed on one yarn and the other yarn, one yarn and the other yarn are substantially The second contact surface swings as a fixed point. Therefore, in the splicer for synthetic fiber yarns, it is difficult for the one yarn to oscillate and the other yarn to cause friction due to contact with the supporting portion. Therefore, in the splicer for synthetic fiber yarns, the entangled portion can be appropriately formed. As a result, in the splicer for synthetic fiber yarns, it is possible to suppress a decrease in the tensile elongation of the entangled portion.

In one embodiment, the clamping portion may have a pair of clamping members facing each other, and the first contact surface and the second contact surface are provided on one of the clamping members and the other clamping member are in contact with each other. Its location. In this configuration, one of the yarns and the other of the yarns held by the pair of holding members can be reliably brought into contact with the second contact surface. Therefore, one of the yarns and the other of the yarns reliably swing with the second contact surface as a fixed point. Therefore, the yarn of one side of the swing and the yarn of the other side do not cause friction due to contact with the supporting portion. As a result, in the splicer for synthetic fiber yarns, the entangled portion can be appropriately formed, and the decrease in the tensile elongation of the entangled portion can be suppressed.

In one embodiment, the second abutting surface may be a flat surface extending along the opposing direction of the pair of clamping mechanisms. With this configuration, it is possible to further avoid friction caused by contact with the support portion in the yarn of one of the swings and the yarn of the other.

In one embodiment, a dimension between the first contact surface and the second contact surface in a direction orthogonal to the first contact surface and the second contact surface may be 0.5 mm or more and 1.5 mm or less. With this configuration, one yarn and the other yarn can be brought into contact with the second contact surface more reliably.

According to one aspect of the present invention, it is possible to suppress a decrease in the tensile elongation of the entangled portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same or corresponding elements are given the same reference numerals, and repeated descriptions are omitted.

The splicer 1 for a synthetic fiber yarn shown in FIG. 1 performs a yarn end portion of a first yarn (one yarn) Y1 (see FIG. 7) composed of synthetic fibers and a second yarn composed of synthetic fibers. Device for yarn joining at the yarn end of thread (the other yarn) Y2 (see Fig. 7). The splicer 1 for synthetic fiber yarns is, for example, a yarn winding machine for winding a yarn from a supply bobbin to form a package. Yarn splicing at the beginning of the yarn. In this embodiment, the splicer 1 for synthetic fiber yarns is a so-called manual splicer.

The splicer 1 for synthetic fiber yarns includes a main body 3 and a yarn joining mechanism 5. The main body 3 is a frame holding the yarn joining mechanism 5. The main body 3 includes a first main body portion 3a and a second main body portion 3b. When viewed from the side, the body 3 has, for example, a substantially L-shape.

The first body portion 3a is a portion held by an operator when the splicer 1 for synthetic fiber yarns is used. The first body portion 3a has, for example, a substantially rectangular parallelepiped shape. An operation section 7 is provided on the first body section 3a. The operation unit 7 is a button which is operated when the yarn splicing operation is performed in the splicer 1 for synthetic fiber yarns. In this embodiment, the operation portion 7 is provided on one end portion side (second body portion 3b side) of the first body portion 3a in the longitudinal direction of the first body portion 3a and is located within the range of movement of the index finger when the first body portion 3a is held by the operator. Parts.

A connection portion 9 is provided at an end portion (the other end portion in the longitudinal direction) below the first body portion 3a. A tube (not shown) for supplying compressed air (fluid) (hereinafter also simply referred to as "air") is connected to the connection portion 9. The first body portion 3 a can also accommodate a switch that is linked to the operation of the operation portion 7 and a component that branches compressed air supplied through the connection portion 9.

A yarn joining mechanism 5 is provided on the second body portion 3b. The second body portion 3b has, for example, a substantially rectangular parallelepiped shape. The second body portion 3b is provided at one end portion of the first body portion 3a. Specifically, the second body portion 3b is provided integrally with the first body portion 3a so that the length direction of the second body portion 3b and the length direction of the first body portion 3a become a specific angle (for example, 90 ° or less). The second body portion 3b exposes the yarn joining mechanism 5. A driving unit or the like (for example, a cylinder or the like) that drives a first clamping mechanism 20 and a second clamping mechanism 30 described later is housed in the second body portion 3b.

As shown in FIG. 2 or FIG. 3, the yarn joining mechanism 5 includes a yarn joining unit 10, a first clamping mechanism 20, and a second clamping mechanism 30. The first clamping mechanism 20 and the second clamping mechanism 30 are provided at positions of the chamber 14 across the yarn joining section 10.

As shown in FIG. 4, the yarn joining section 10 includes a yarn joining nozzle 12, a chamber (passage) 14, and an air flow path 16.

The yarn splicing nozzle 12 is a block formed of a metal or ceramic material. A slit 13 is provided in the yarn joining nozzle 12. The slit 13 is a portion where the yarn is introduced into the cavity 14. An inclined surface 15 is provided on the upper portion of the slit 13. The inclined surface 15 guides the yarn toward the slit 13. The inclined surface 15 is tapered from the upper surface 12 a of the yarn splicing nozzle 12 toward the front end of the slit 13.

The cavity 14 is a passage through which the first yarn Y1 and the second yarn Y2 are inserted. As shown in FIG. 5, the cavity 14 penetrates one side surface 12 b and the other side surface 12 c of the yarn joining nozzle 12. The cavity 14 forms a space through which the first yarn Y1 and the second yarn Y2 can pass. As shown in FIG. 4, when viewed from the side surfaces 12 b and 12 c, the cavity 14 has a circular shape. The circular shape includes a perfect circular shape, an elliptical shape, and the like. The diameter of the cavity 14 may be appropriately set according to the design.

The air flow path 16 allows air supplied to the chamber 14 to circulate. The air flow path 16 has a spray hole 16 a that opens toward the chamber 14. The injection hole 16 a communicates the air flow path 16 with the chamber 14. Air is sprayed from the spray hole 16a to the chamber 14. The position and diameter of the injection hole 16a in the cavity 14 may be appropriately set according to the design. A connection portion 18 is provided on the upstream side of the air flow path 16 (the side opposite to the injection hole 16 a). A supply pipe or the like for supplying air is connected to the connection portion 18.

As shown in FIGS. 2 and 3, the first clamping mechanism 20 includes a support portion 22 and a clamping portion 23. The first clamping mechanism 20 clamps (clamps) the yarn inserted into the cavity 14 of the yarn joining section 10.

The support portion 22 has a rectangular parallelepiped shape (corner columnar shape). As shown in FIG. 5, the support portion 22 has one pair of main faces 22 a and 22 b facing each other and one pair of side faces 22 c and 22 d facing each other. The side surface 22d is a surface facing the side surface 12b of the yarn splicing nozzle 12.

The support portion 22 holds the clamping portion 23. The support part 22 is provided so that it can swing. Specifically, as shown in FIG. 2, a shaft 21 is provided at a base end portion (one end portion in the longitudinal direction) of the support portion 22. The shaft 21 is fixed to a frame or the like (not shown). The support portion 22 swings around the shaft 21. The support portion 22 approaches the second position P2 (see FIG. 6B) of the yarn joining portion 10 at the front end portion (the other end portion in the longitudinal direction), and is further away from the first position P1 than the second position P2 of the yarn joining portion 10 from the front end portion. (See Fig. 6A). That is, the first clamping mechanism 20 moves between the first position P1 and the second position P2. The support portion 22 is moved by, for example, driving of a driving portion (not shown) such as a cylinder. In this embodiment, as described above, in the support portion 22, one end portion in the longitudinal direction of the shaft 21 is set as the base end portion, and the other end portion in the length direction opposite to the one end portion is set as the front end portion. .

A recessed portion 25 is provided in the support portion 22. The recessed portion 25 is provided on the front end side of the support portion 22. The recessed portion 25 is opened on a main surface 22 a and a pair of side surfaces 22 c and 22 d of the support portion 22. The recessed portion 25 exposes a part of the clamping portion 23. As shown in FIG. 2, when viewed from the main surface 22 a side of the support portion 22, the recessed portion 25 has a rectangular shape. As shown in FIG. 3, when viewed from the side surface 22 c side of the support portion 22, the recessed portion 25 has a rectangular shape.

As shown in FIG. 5, the support portion 22 includes a support surface 27 a that slidably supports a second holding member 26 (first holding member 24) described later. The support surface 27a is provided in the center part in the direction opposite to one of the side surfaces 22c, 22d of the support part 22. The supporting surface 27a has a shape (semi-circular shape) that is curved downward in accordance with the shape of the outer peripheral surface of the second holding member 26 (the first holding member 24). The support surface 27 a extends along the longitudinal direction of the support portion 22.

The supporting portion 22 has a first abutment surface at a position along the opposing direction of the pair of side surfaces 22c and 22d (the opposing direction of the first clamping mechanism 20 and the second clamping mechanism 30) across the supporting surface 27a. 27b and the second contact surface 27c. The first contact surface 27 b and the second contact surface 27 c constitute a bottom surface of the recessed portion 25. The first abutment surface 27 b is a surface capable of abutting the first yarn Y1 and the second yarn Y2 held by the nip 23. The abutment means that the first yarn Y1 and the second yarn Y2 held by the nip 23 are in contact with the first abutment surface 27b, and the first yarn Y1 and the second yarn Y2 are included. When the first contact surface 27b is not in contact. The second abutment surface 27 c is a surface that abuts on the first yarn Y1 and the second yarn Y2 held by the nip 23. As shown in FIG. 2, the first contact surface 27 b and the second contact surface 27 c are provided at least at a position where the first holding member 24 and the second holding member 26 abut.

As shown in FIG. 5, the first contact surface 27 b is a flat surface continuous with one end (the end on the side surface 22 c side) of the support surface 27 a. The second contact surface 27c is a flat surface continuous with the other end (the end on the side of the side surface 22d) of the support surface 27a. That is, in the support portion 22, viewed from the opposite direction of the pair of main surfaces 22a and 22b, the second abutment surface 27c, the support surface 27a, and the first abutment surface 27b are provided in this order from the yarn joining portion 10 side. Have all sides. That is, the second contact surface 27 c is disposed between the yarn joining portion 10 and the clamping portion 23. The second abutment surface 27c is located inward in the direction in which the first clamping mechanism 20 and the second clamping mechanism 30 oppose each other while sandwiching the yarn splicing portion 10 therebetween, and the first abutting surface 27b is disposed on the pair It is located outward in the direction.

The first abutment surface 27b is substantially parallel to the main surfaces 22a and 22b. The first contact surface 27b is provided across the support surface 27a and the side surface 22c. The second contact surface 27c is substantially parallel to the main surfaces 22a and 22b. The second contact surface 27c is provided across the support surface 27a and the side surface 22d.

In this embodiment, the positions of the first abutment surface 27b and the second abutment surface 27c in the opposing direction of one of the support portions 22 to the main surfaces 22a and 22b are different. The second abutment surface 27c is located above the first abutment surface 27b. Here, the term "above" refers to the direction in which the first clamping mechanism 20 and the second clamping mechanism 30 oppose each other, and the direction in which the first clamping member 24 and the second clamping member 26 will be described later ( In the direction orthogonal to the nip), one side of the first yarn Y1 and the second yarn Y2 is introduced. That is, it shows upward, downward, upward, and upward as shown in FIG. 5. The first contact surface 27b is located closer to the main surface 22b than the second contact surface 27c. The second contact surface 27c is located closer to the main surface 22a than the first contact surface 27b.

The distance D1 between the first contact surface 27b and the main surface 22b is shorter than the distance D2 between the second contact surface 27c and the main surface 22b. In other words, the distance D2 between the second contact surface 27c and the main surface 22b is longer than the distance D1 between the first contact surface 27b and the main surface 22b. When viewed from a different angle, the distance between the first contact surface 27b and the main surface 22a is longer than the distance between the second contact surface 27c and the main surface 22a. In other words, the distance between the second contact surface 27c and the main surface 22a is shorter than the distance between the first contact surface 27b and the main surface 22a.

The difference G between the first contact surface 27b and the second contact surface 27c in the facing direction of the pair of main surfaces 22a, 22b is, for example, 0.5 mm or more and 1.5 mm or less. The difference G is a dimension between the first contact surface 27b and the second contact surface 27c in a direction orthogonal to the first contact surface 27b and the second contact surface 27c. The difference G may be appropriately set in accordance with the diameters of the first and second holding members 24 and 26. For example, when the distance D1 between the first abutment surface 27b and the main surface 22b is shortened to increase the difference G, the first yarn Y1 and the first yarn Y1 held by the first holding member 24 and the second holding member 26 can be shortened. Length of the second yarn Y2. When the length of the first yarn Y1 and the second yarn Y2 held by the first holding member 24 and the second holding member 26 becomes short, the holding portion 23 may not be able to hold the first yarn stably. 1 yarn Y1 and second yarn Y2 may be involved. Therefore, it is preferable to appropriately set the difference G to the extent that the first yarn Y1 and the second yarn Y2 can be stably held in the nip 23 based on experiments and the like.

The second contact surface 27c and the side surface 22d are at an angle of approximately 90 °. The top of the corner formed by the second contact surface 27c and the side surface 22d is preferably surface-polished. In this configuration, when the first yarn Y1 and the second yarn Y2 are separated from the top, the first yarn Y1 and the second yarn Y2 can be prevented from being damaged.

As shown in FIG. 2, the holding section 23 includes a first holding member 24 and a second holding member 26. The first holding member 24 and the second holding member 26 each have a cylindrical shape. The first holding member 24 and the second holding member 26 are each formed of, for example, a metal such as SUS having abrasion resistance. The diameters of the first holding member 24 and the second holding member 26 may be appropriately set.

The first holding member 24 and the second holding member 26 are arranged in the support portion 22 so that their respective end faces face each other. Specifically, the first clamping member 24 is disposed on the front end side of the support portion 22, and the second clamping member 26 is disposed on the base end portion side of the support portion 22 than the first clamping member 24. In the first holding mechanism 20, the yarn is held in the holding portion 23 by holding the yarn between the end surface of the first holding member 24 and the end surface of the second holding member 26.

A part of the first holding member 24 is housed in the support portion 22, and a part of the first holding member 24 is exposed in the recessed portion 25 of the support portion 22. The first clamping member 24 may be fixed to the support portion 22 or may be provided to move freely in a direction (hereinafter, also simply referred to as an "opposing direction") where the first clamping member 24 and the second clamping member 26 oppose each other. (Can slide on the support surface 27a).

A part of the second holding member 26 is housed in the supporting portion 22, and a part of the second holding member 26 is exposed in the recessed portion 25 of the supporting portion 22. The second holding member 26 is provided in the support portion 22 so as to be movable. The second holding member 26 moves in the facing direction. The second clamping member 26 is biased toward the first clamping member 24 by a biasing member (not shown) such as a spring. That is, the second gripping member 26 and the first gripping member 24 are in a state in which a force other than the biasing member is not applied to the second gripping member 26, and the end faces of the second gripping member 26 are abutted by the biasing member Pick up.

The second holding member 26 moves in conjunction with the movement of the support portion 22. The second holding member 26 moves from the second position P2 (see FIG. 6B) to the first position P1 (FIG. 6A) by the support portion 22, and moves in a direction away from the first holding member 24. Specifically, when the support portion 22 is moved from the second position P2 to the first position P1, the second clamping member 26 is moved in a direction opposite to the biasing direction of the biasing member by a cam mechanism or the like (not shown). Press. Thereby, a gap (space) is formed between the first holding member 24 and the second holding member 26 in the holding portion 23. In addition, the movement of the second holding member 26 may not be linked with the movement of the support portion 22.

As shown in FIGS. 2 and 3, the second clamping mechanism 30 includes a support portion 32 and a clamping portion 33. The second clamping mechanism 30 clamps (clamps) the yarn inserted into the cavity 14 of the yarn joining section 10.

The support portion 32 has a rectangular parallelepiped shape (corner pillar shape). As shown in FIG. 5, the support portion 32 has a pair of main surfaces 32 a and 32 b facing each other and a pair of side surfaces 32 c and 32 d facing each other. The side surface 32 d is a surface facing the side surface 12 c of the yarn joining nozzle 12.

The support portion 32 holds the clamping portion 33. The support part 32 is provided so that it can swing. Specifically, as shown in FIG. 2, a shaft 31 is provided at a base end portion (one end portion in the longitudinal direction) of the support portion 32. The shaft 31 is fixed to a frame (not shown) or the like. The support portion 32 swings around the shaft 31. The support portion 32 approaches the second position P2 (refer to FIG. 6B) of the yarn joining portion 10 at the front end portion (the other end portion in the longitudinal direction), and is further away from the first position P1 than the second position P2 of the yarn joining portion 10 from the front end portion. (See Fig. 6A). That is, the first clamping mechanism 20 moves between the first position P1 and the second position P2. The support portion 32 is moved by, for example, driving of a driving portion (not shown) such as a cylinder. This driving section may be the same as the driving section of the driving support section 22 or may be separately provided. In this embodiment, as described above, in the support portion 32, one end portion in the longitudinal direction of the shaft 31 is set as the base end portion, and the other end portion in the length direction opposite to the one end portion is set as the front end portion. .

A concave portion 35 is provided in the support portion 32. The recessed portion 35 is provided on the front end side of the support portion 32. The recessed portion 35 is opened on a main surface 32 a and a pair of side surfaces 32 c and 32 d of the support portion 32. The recessed portion 35 exposes a part of the clamping portion 33. As shown in FIG. 2, when viewed from the main surface 32 a side of the support portion 32, the recessed portion 35 has a rectangular shape. When viewed from the side surfaces 32c and 32d of the support portion 32, the recessed portion 35 has a rectangular shape.

As shown in FIG. 5, the support portion 32 includes a support surface 37 a that slidably supports a second holding member 36 (first holding member 34) described later. The support surface 37a is provided in the center part in the direction opposite to one of the side surfaces 32c, 32d of the support part 32. The support surface 37a has a shape (semi-circular shape) that is curved downward in accordance with the shape of the outer peripheral surface of the second holding member 36 (the first holding member 34). The support surface 37 a extends along the longitudinal direction of the support portion 32.

The support portion 32 has a first contact surface 37b and a second contact surface 37c at positions facing the pair of side surfaces 32c and 32d across the support surface 37a. The first contact surface 37b and the second contact surface 37c constitute the bottom surface of the recessed portion 35. The first abutment surface 37 b is a surface capable of abutting on the first yarn Y1 and the second yarn Y2 held by the nip 33. The second abutment surface 37 c is a surface that abuts on the first yarn Y1 and the second yarn Y2 held by the nip 33. As shown in FIG. 2, the first abutment surface 37 b and the second abutment surface 37 c are provided at least at positions where the first clamping member 34 and the second clamping member 36 abut.

As shown in FIG. 5, the first contact surface 37 b is a flat surface continuous with one end (the end on the side surface 32 c side) of the support surface 37 a. The second contact surface 37c is a flat surface that is continuous with the other end (the end on the side surface 32d side) of the support surface 37a. That is, in the support portion 32, viewed from the opposite direction of the pair of main surfaces 32a and 32b, the second contact surface 37c, the support surface 37a, and the first contact surface 37b are provided in this order from the yarn joining portion 10 side. Have all sides. That is, the second contact surface 37 c is disposed between the yarn joining portion 10 and the nip portion 33. The second abutment surface 37c is located inward in the direction in which the first clamping mechanism 20 and the second clamping mechanism 30 oppose each other while sandwiching the yarn splicing portion 10 therebetween, and the first abutment surface 37b is disposed in the pair. It is located outward in the direction.

The first contact surface 37b is substantially parallel to the main surfaces 32a and 32b. The first contact surface 37b is provided across the support surface 37a and the side surface 32c. The second contact surface 37c is substantially parallel to the main surfaces 32a and 32b. The second contact surface 37c is provided across the support surface 37a and the side surface 32d.

In this embodiment, the positions of the first abutment surface 37b and the second abutment surface 37c in the opposite directions of the main surfaces 32a and 32b of one of the support portions 32 are different. The second contact surface 37c is located above the first contact surface 37b. The first contact surface 37b is located closer to the main surface 32b than the second contact surface 37c. The second contact surface 37c is located closer to the main surface 32a than the first contact surface 37b.

The distance D1 between the first contact surface 37b and the main surface 32b is shorter than the distance D2 between the second contact surface 37c and the main surface 32b. In other words, the distance D2 between the second contact surface 37c and the main surface 32b is longer than the distance D1 between the first contact surface 37b and the main surface 32b. When viewed from a different angle, the distance between the first contact surface 37b and the main surface 32a is longer than the distance between the second contact surface 37c and the main surface 32a. In other words, the distance between the second contact surface 37c and the main surface 32a is shorter than the distance between the first contact surface 37b and the main surface 32a. The first contact surface 37b is at the same position as the first contact surface 27b of the first holding mechanism 20, and the second contact surface 37c is at the same position as the second contact surface 27c of the first holding mechanism 20.

The difference G between the first contact surface 37b and the second contact surface 37c in the facing direction of the pair of main surfaces 32a and 32b is, for example, 0.5 mm or more and 1.5 mm or less. The difference G may be appropriately set depending on the diameters of the first and second clamping members 34 and 36, and the like.

The second contact surface 37c and the side surface 32d form an angle of approximately 90 °. The top of the corner formed by the second contact surface 37c and the side surface 32d is preferably surface-polished.

As shown in FIG. 2, the holding portion 33 includes a first holding member 34 and a second holding member 36. The first holding member 34 and the second holding member 36 are each cylindrical. The first holding member 34 and the second holding member 36 are each formed of a metal such as SUS having wear resistance. The diameters of the first holding member 34 and the second holding member 36 may be appropriately set.

The first holding member 34 and the second holding member 36 are arranged in the support portion 32 so that their respective end surfaces face each other. Specifically, the first clamping member 34 is disposed on the front end side of the support portion 32, and the second clamping member 36 is disposed on the base end portion side of the support portion 32 than the first clamping member 34. In the second holding mechanism 30, the yarn is held in the holding portion 33 by holding the yarn between the end surface of the first holding member 34 and the end surface of the second holding member 36.

A part of the first holding member 34 is housed in the support portion 32, and a part of the first holding member 34 is exposed in the recessed portion 35 of the support portion 32. The first holding member 34 may be fixed to the support portion 32 or may be provided to move freely in a direction in which the first holding member 34 and the second holding member 36 oppose each other (slideable on the supporting surface 37a).

A part of the second holding member 36 is housed in the supporting portion 32, and a part of the second holding member 36 is exposed in the recessed portion 35 of the supporting portion 32. The second holding member 36 is provided in the support portion 32 so as to be movable. The second holding member 36 moves in the facing direction. The second clamping member 36 is biased toward the first clamping member 34 by a biasing member (not shown) such as a spring. That is, the second gripping member 36 and the first gripping member 34 are in a state in which a force other than the biasing member is not applied to the second gripping member 36, and the end faces of the second gripping member 36 are abutted by the biasing force of the biasing member Pick up.

The second holding member 36 moves in conjunction with the movement of the support portion 32. The second holding member 36 moves from the second position P2 (see FIG. 6B) to the first position P1 (FIG. 6A) by the support portion 32, and moves in a direction away from the first holding member 34. Specifically, when the support portion 32 is moved from the second position P2 to the first position P1, the second holding member 36 is moved in a direction opposite to the biasing direction of the biasing member by a cam mechanism or the like (not shown). Press. Thereby, a gap (space) is formed between the first holding member 34 and the second holding member 36 in the holding portion 33. In addition, the movement of the second holding member 36 may not be linked with the movement of the support portion 32.

Next, a description will be given of a method for forming a entangled portion (a yarn joining method) using the splicer 1 for a synthetic fiber yarn.

First, as shown in FIG. 6A, the first yarn Y1 and the second yarn Y2 are set in the splicer 1 for a synthetic fiber yarn. Specifically, the first yarn Y1 and the second yarn Y2 are located in the cavity 14 through the slit 13 of the yarn joining section 10, and are disposed in the first holding mechanism 20 and the second holding in the first position P1. Agency 30. More specifically, the first yarn Y1 and the second yarn Y2 are arranged between the first gripping member 24 and the second gripping member 26 of the first gripping mechanism 20, and are arranged in the second gripping mechanism 30 between the first holding member 34 and the second holding member 36. Thereby, the first yarn Y1 and the second yarn Y2 are placed on the first abutment surface 27b and the second abutment surface 27c of the first holding mechanism 20, and are placed on the second holding mechanism 30 on the first contact surface 37b and the second contact surface 37c.

When the first yarn Y1 and the second yarn Y2 are set in the splicer 1 for synthetic fiber yarns, the operation section 7 is operated (pressed). Thereby, in the splicer 1 for synthetic fiber yarns, a drive part operates, and the 1st clamping mechanism 20 and the 2nd clamping mechanism 30 operate.

Specifically, in the first clamping mechanism 20, the first yarn Y1 and the second yarn Y2 are clamped by the first clamp member 24 and the second clamp member 26. In the second gripping mechanism 30, the first yarn Y1 and the second yarn Y2 are held by the first holding member 34 and the second holding member 36. Thereafter, as shown in FIG. 6B, the first holding mechanism 20 and the second holding mechanism 30 are moved from the first position P1 to the second position P2. As a result, as shown in FIG. 7, the first yarn Y1 and the second yarn Y2 are held in a slack state between the nip 23 and the nip 33. The first yarn Y1 and the second yarn Y2 are held in a state of being in contact with at least the second contact surface 27c and the second contact surface 37c.

When the operation unit 7 is operated, air is injected into the chamber 14 from the injection hole 16 a through the air flow path 16. Thereby, the first yarn Y1 and the second yarn Y2 located in the cavity 14 are spun by the action of air to form a entangled portion.

Then, the operation of the operation unit 7 is cancelled. Thereby, in the splicer 1 for synthetic fiber yarns, the air injection from the injection hole 16a to the chamber 14 is stopped, and the first clamping mechanism 20 and the second clamping mechanism 30 are operated.

Specifically, as shown in FIG. 6A, the first holding mechanism 20 and the second holding mechanism 30 move from the second position P2 to the first position P1. With this operation, in the first holding mechanism 20, the second holding member 26 moves in a direction away from the first holding member 24, and the first yarn 24 and the second holding member 26 are released from the first yarn. The yarn Y1 and the second yarn Y2 are clamped. Similarly in the second gripping mechanism 30, the second gripping member 36 is moved away from the first gripping member 34, and the first yarn Y1 is released from the first gripping member 34 and the second gripping member 36. And the clamping of the second yarn Y2. In addition, after the first gripping mechanism 20 is moved from the second position P2 to the first position P1, the pair of the first yarn Y1 and the second yarn by the first gripping member 24 and the second gripping member 26 may be released. Y2 clamp. Similarly, after the second clamp mechanism 30 is moved from the second position P2 to the first position P1, the first yarn Y1 and the second yarn Y2 may be released from the first yarn 34 and the second yarn 36. Of holding. In this way, the splicer 1 for the synthetic fiber yarn is spliced to the first yarn Y1 and the second yarn Y2. Thereby, the first yarn Y1 and the second yarn Y2 become one yarn.

Next, the function and effect of the splicer 1 for synthetic fiber yarns of the present embodiment will be described.

As shown in FIG. 8, in the first clamping mechanism 20A of the yarn joining mechanism 5A of the comparative example, the positional relationship between the first abutment surface 27b and the second abutment surface 27c of the support portion 22A is similar to that of the first embodiment of the present embodiment. The first abutment surface 27b and the second abutment surface 27c of the support portion 22 of the 1 clamping mechanism 20 are opposite to each other. That is, the second contact surface 27c is located below the first contact surface 27b. The support portion 32A of the second clamping mechanism 30A has the same configuration.

In this configuration, when the first yarn Y1 and the second yarn Y2 are swung in the chamber 14 as fixed points by the jet of air, the first yarn Y1 and the second yarn Y2 may be in contact with the second abutment surface. 27c, 37c contact. In this way, when the first yarn Y1 and the second yarn Y2 are in contact with the second contact surfaces 27c and 37c, friction occurs due to the contact. Thereby, there is a possibility that the first yarn Y1 and the second yarn Y2 are damaged to some extent and the entangled portion cannot be properly formed. As a result, in the configuration of the comparative example, the tensile elongation of the complex portion was reduced.

In contrast, in the splicer 1 for synthetic fiber yarns of the present embodiment shown in FIG. 7, the second abutment surfaces 27c and 37c are positioned higher than the first abutment surfaces 27b and 37b. In this configuration, the first yarn Y1 and the second yarn Y2 swing in the cavity 14 with the nips 23 and 33 as fixed points. Here, the second abutment surfaces 27c and 37c are located above the first abutment surfaces 27b and 37b. Therefore, when the first yarn Y1 and the second yarn Y2 are arranged, the first yarn The weight of Y1 and the second yarn Y2, and the first yarn Y1 and the second yarn Y2 are in contact with at least the second contact surfaces 27c and 37c. In this state, the first yarn Y1 and the second yarn Y2 are clamped by the nip 23 and the nip 33, and when air is sprayed on the first yarn Y1 and the second yarn Y2, the first yarn Y1 And the second yarn Y2 swings substantially using the second contact surfaces 27c and 37c as fixed points. Therefore, in the splicer 1 for synthetic fiber yarns, it is difficult for the first yarn Y1 and the second yarn Y2 to oscillate to cause friction due to contact with the support portions 22 and 32. Therefore, in the splicer 1 for synthetic fiber yarns, a entanglement part can be formed suitably. As a result, in the splicer 1 for synthetic fiber yarns, it is possible to suppress a decrease in the tensile elongation of the entangled portion.

The effect of the splicer 1 for synthetic fiber yarns is demonstrated concretely based on an Example and a comparative example. In FIGS. 9A to 9D, the measured value of the tensile elongation of the synthetic fiber without forming the entangled portion is used as a reference value, and the reduction amount (%) of the tensile elongation from the reference value is shown in Examples and Comparative Examples. The example shows the result of forming the yarn of the entanglement part by the splicer 1 for synthetic fiber yarns of this embodiment. The comparative example shows the result of forming the yarn of the entanglement part by the splicer for the synthetic fiber yarn provided with the yarn joining mechanism 5A shown in FIG. Using TENSORAPID4 (trade name) manufactured by USTER, four types of yarns (yarn A to yarn D) having different thicknesses and molecular structures were measured. Each yarn is a pre-oriented yarn (POY: Pre Oriented Yarn).

(Comparative Example 1, Example 1)
Yarn A is a yarn of 135 [dtex] -72 [f]. In Comparative Example 1, the following results were obtained: the measured value was 115.4% with respect to the reference value (129.2%) of the yarn A, and the decrease in tensile elongation from the reference value was "-13.8%". In Example 1, the following results were obtained: The measured value was 120.3% with respect to the reference value of the yarn A, and the amount of decrease in tensile elongation from the reference value was "-8.9%".

(Comparative Example 2, Example 2)
Yarn B is a yarn of 88 [dtex] -48 [f] -CD (cationic dyeable yarn). In Comparative Example 2, the following results were obtained: the measured value was 120.0% with respect to the reference value (137.3%) of the yarn B, and the amount of decrease in tensile elongation from the reference value was "-17.3%". In Example 2, the following results were obtained: The measured value was 124.5% relative to the reference value of the yarn B, and the amount of decrease in tensile elongation from the reference value was "-12.8%".

(Comparative Example 3 and Example 3)
Yarn C is a yarn of 84 [dtex] -36 [f]. In Comparative Example 3, the following results were obtained: The measured value was 107.6% with respect to the reference value (119.7%) of the yarn C, and the decrease in tensile elongation from the reference value was "-12.1%". In Example 3, the following results were obtained: The measured value was 109.8% with respect to the reference value of the yarn C, and the amount of decrease in tensile elongation from the reference value was "-9.9%".

(Comparative Example 4, Example 4)
Yarn D is a yarn of 90 [dtex] -36 [f]. In Comparative Example 4, the following results were obtained: The measured value was 97.1% with respect to the reference value (103.4%) of the yarn D, and the amount of decrease in tensile elongation from the reference value was "-6.3%". In Example 4, the following results were obtained: The measured value was 101.9% with respect to the reference value of the yarn D, and the amount of decrease in tensile elongation from the reference value was "-1.5%".

As described above, in the case where the entangled portion is formed by the splicer 1 for the synthetic fiber yarn of the four types of yarns (yarn A to yarn D) having different thicknesses and molecular structures, and comparison Compared with the examples, the amount of reduction in tensile elongation is small. Therefore, it was confirmed that when the entangled portion is formed by the splicer 1 for synthetic fiber yarns, it is possible to suppress a decrease in the tensile elongation. Furthermore, in general, when the type of yarn (for example, thickness, number of filaments) is different, the value of tensile elongation is different, so the allowable reduction ratio of tensile elongation is also different.

In the splicer 1 for synthetic fiber yarns of the present embodiment, the holding portions 23 and 33 have first holding members 24 and 34 and second holding members 26 and 36 facing each other. The first contact surfaces 27b and 37b and the second contact surfaces 27c and 37c are provided at positions where the first holding members 24 and 34 and the second holding members 26 and 36 abut. In this configuration, the first yarn Y1 and the second yarn Y2 held by the first holding members 24 and 34 and the second holding members 26 and 36 and the second contact surfaces 27c and 37c can be reliably made. Abut. Therefore, the first yarn Y1 and the second yarn Y2 reliably swing the second contact surfaces 27c and 37c as fixed points. Therefore, the first yarn Y1 and the second yarn Y2 that are swung do not cause friction due to contact with the support portions 22 and 32. As a result, in the splicer 1 for synthetic fiber yarns, the entangled portion can be appropriately formed, and the decrease in the tensile elongation of the entangled portion can be suppressed.

In the splicer 1 for synthetic fiber yarns of the present embodiment, the second abutment surfaces 27c and 37c are flat surfaces extending along the opposing direction of the first holding mechanism 20 and the second holding mechanism 30. In this configuration, the first yarn Y1 and the second yarn Y2 that are oscillated can further avoid friction caused by contact with the support portions 22 and 32.

In the splicer 1 for synthetic fiber yarns of this embodiment, the difference G between the first abutment surfaces 27b and 37b and the second abutment surfaces 27c and 37c is 0.5 mm or more and 1.5 mm or less. With this configuration, the first yarn Y1 and the second yarn Y2 can be more reliably brought into contact with the second contact surfaces 27c and 37c. Therefore, in the splicer 1 for synthetic fiber yarns, the entangled portion can be appropriately formed, and the reduction in the tensile elongation of the entangled portion can be suppressed.

Specifically, an effect by the difference G between the first contact surfaces 27b and 37b and the second contact surfaces 27c and 37c will be described based on the measurement results. The measurement results for the cases where the difference G is 0 mm, 0.5 mm, 1.0 mm, and 1.5 mm are shown in Figs. 10A and 10B. In FIG. 10A and FIG. 10B, the measured value of the tensile elongation of the synthetic fiber in which the entangled part is not formed is set as a reference value, and the difference G represents the reduction amount (%) of the tensile elongation from the reference value. For the measurement, TENSORAPID 4 (trade name) manufactured by USTER was used. In FIG. 10A, in the splicer 1 for synthetic fiber yarns, the diameter of the cavity 14 is 6.0 mm, the diameter of the spray hole 16a is Results in 1.3 mm configuration. In FIG. 10B, in the splicer 1 for synthetic fiber yarns, the diameter of the cavity 14 is 3.5 mm, the diameter of the spray hole 16a is Results in 1.0 mm configuration. In Figs. 10A and 10B, six measurements were performed for the cases where the difference G was 0 mm, 0.5 mm, 1.0 mm, and 1.5 mm, respectively.

As shown in FIGS. 10A and 10B, when the difference G is 0 mm, that is, when there is no difference in the height positions of the first abutment surfaces 27b and 37b and the second abutment surfaces 27c and 37c (the same In the case of the height position), the amount of decrease in tensile elongation varies. Specifically, when the difference G is 0 mm, in the measurement result shown in FIG. 10A, the difference between the maximum value and the minimum value of the reduction amount is 7.0%, and in the measurement result shown in FIG. 10B, the reduction amount The difference between the maximum and minimum values is 10.1%. In contrast, when the difference G is 0.5 mm, 1.0 mm, and 1.5 mm, compared with the case where the difference G is 0 mm, the deviations of the reduction amounts are small. In addition, when the difference G is 0.5 mm, 1.0 mm, and 1.5 mm, compared with the case where the difference G is 0 mm, the average reduction in tensile elongation is small. Therefore, it was confirmed that, when the entangled portion is formed by the splicer 1 for synthetic fiber yarns, it is possible to suppress variations in the amount of reduction in tensile elongation and to suppress reduction in tensile elongation.

As mentioned above, although embodiment of this invention was described, this invention is not necessarily limited to the said embodiment, Various changes can be made in the range which does not deviate from the meaning.

In the embodiment described above, the shape shown in FIG. 1 has been described as an example of the shape of the main body 3. However, the shape of the body 3 is not limited to the form shown in FIG. 1.

In the above embodiment, the first holding members 24 and 34 and the second holding members 26 and 36 are cylindrical, that is, the cross sections of the first holding members 24 and 34 and the second holding members 26 and 36 are circular. The shape of the shape has been described as an example. However, the first holding member and the second holding member are not limited to a cylindrical shape as long as they have a shape capable of holding the yarn, and they can have various shapes (for example, a corner pillar shape).

In the embodiment described above, an example has been described in which the support portions 22 and 32 are moved toward the first position P1 and the second position P2 by swinging about the shafts 21 and 31 as the center. However, the support portions 22 and 32 may be moved in a direction approaching each other and a direction away from each other, for example, in a state parallel to each other.

In the above-mentioned embodiment, the following is described as an example. The first yarn Y1 and the second yarn Y2 are arranged in the first holding mechanism 20 and the second holding mechanism 30 at the first position P1. After that, the first clamping mechanism 20 and the second clamping mechanism 30 are moved from the first position P1 to the second position P2, and air is ejected from the injection hole 16a to the chamber 14 to form a complex portion. However, the method of forming the entangled portion using the splicer 1 for synthetic fiber yarn is not limited to this.

For example, after the first yarn Y1 and the second yarn Y2 are arranged at the first holding mechanism 20 and the second holding mechanism 30 located at the second position P2, the first holding mechanism 20 and the second holding mechanism 30 may be arranged. After the clamping mechanism 30 moves from the second position P2 to the first position P1, and after the first clamping mechanism 20 and the second clamping mechanism 30 are moved from the first position P1 to the second position P2, the nozzle holes The cavity 14 sprays air to form a complex portion.

In the above-mentioned embodiment, the form of the manual splicer 1 for the synthetic fiber yarn splicer 1 used by the operator was demonstrated as an example. However, the splicer for synthetic fiber yarns may be installed in a device or the like.

1‧‧‧ Splicer for synthetic fiber yarn

3‧‧‧ Ontology

3a‧‧‧The first body part

3b‧‧‧The second body part

5‧‧‧ Yarn receiving mechanism

7‧‧‧Operation Department

9‧‧‧ Connection Department

10‧‧‧ yarn splicing department

12‧‧‧ yarn splicing nozzle

12a‧‧‧upper surface

12b‧‧‧ side of one side

12c‧‧‧ side of the other side

13‧‧‧Slit

14‧‧‧ chamber (access)

14a‧‧‧Inner peripheral surface

15‧‧‧ inclined surface

16‧‧‧air flow path

16a‧‧‧jet hole

18‧‧‧ Connection Department

20‧‧‧The first clamping mechanism

20A‧‧‧The first clamping mechanism

22‧‧‧Support Department

22a‧‧‧Main face

22b‧‧‧ main face

22c‧‧‧side

22d‧‧‧side

23‧‧‧Clamping section

24‧‧‧The first clamping member

25‧‧‧Clamping section

26‧‧‧Second clamping member

27a‧‧‧Support

27b‧‧‧The first abutment surface

27c‧‧‧The second abutment surface

30‧‧‧Second clamping mechanism

30A‧‧‧Second clamping mechanism

32‧‧‧Support Department

32A‧‧‧Support Department

32a‧‧‧Main face

32b‧‧‧ main face

32c‧‧‧ side

32d‧‧‧side

33‧‧‧Clamping section

34‧‧‧The first clamping member

35‧‧‧ recess

36‧‧‧ 2nd clamping member

37a‧‧‧ support

37b‧‧‧The first abutment surface

37c‧‧‧The second abutment surface

D1‧‧‧distance

D2‧‧‧distance

G‧‧‧Poor

P1‧‧‧1st position

P2‧‧‧ 2nd position

Y1‧‧‧The first yarn (one yarn)

Y2‧‧‧The second yarn (the other yarn)

Fig. 1 is a perspective view showing a splicer for a synthetic fiber yarn according to an embodiment.

Fig. 2 is a view of the yarn joining mechanism viewed from above.

Figure 3 is a side view of the yarn splicing mechanism.

Fig. 4 is a cross-sectional view of the yarn joining portion.

Fig. 5 is a sectional view taken along the line V-V in Fig. 2.

Fig. 6A is a diagram showing the operation of the yarn joining mechanism.

Fig. 6B is a diagram showing the operation of the yarn joining mechanism.

Fig. 7 is a view showing a state where the yarn is held by the yarn joining mechanism.

Fig. 8 is a view showing a yarn joining mechanism of a comparative example.

FIG. 9A is a diagram showing an example and a comparative example.

FIG. 9B is a diagram showing an example and a comparative example.

FIG. 9C is a diagram showing an example and a comparative example.

FIG. 9D is a diagram showing an example and a comparative example.

FIG. 10A is a graph showing measurement results.

FIG. 10B is a graph showing the measurement results.

Claims (4)

A splicer for synthetic fiber yarns, which splices one yarn and the other yarn made of synthetic fibers, and includes: The yarn joining section has a passage forming a space through which the yarn of the one of the above and the yarn of the other can be inserted, and an injection hole that opens into the passage and ejects a fluid; and A pair of clamping mechanisms, which are provided at positions of the above-mentioned path across the yarn splicing section, and hold each of the one yarn and the other yarn inserted in the space; and A pair of the above-mentioned clamping mechanisms have: A clamping portion that clamps each of the yarn of the one party and the yarn of the other party; and A support section that supports the above-mentioned clamping section; and The support portion has a first abutment surface and a second abutment surface respectively disposed in a direction opposite to the pair of the clamping mechanisms at a position across the clamping portion, The second abutting surface is disposed between the yarn joining portion and the clamping portion, and is located above the first abutting surface. The splicer for synthetic fiber yarns according to claim 1, wherein: The clamping portion has a pair of clamping members facing each other, The first abutting surface and the second abutting surface are provided at positions where the clamping member on one side and the clamping member on the other side abut. A splicer for a synthetic fiber yarn as claimed in claim 1 or 2, wherein: The second abutting surface is a flat surface extending along the facing direction of a pair of the clamping mechanisms. The splicer for a synthetic fiber yarn according to any one of claims 1 to 3, wherein A dimension between the first contact surface and the second contact surface in a direction orthogonal to the first contact surface and the second contact surface is 0.5 mm or more and 1.5 mm or less.