TWI744624B - Splicer for synthetic fiber yarn - Google Patents

Abstract

The splicer 1 for synthetic fiber yarns of the present invention includes a yarn joining section 10, a first clamping mechanism 20, and a second clamping mechanism 30. The first clamping mechanism 20 and the second clamping mechanism 30 respectively have clamping portions 23, 33 and support portions 22, 32 that support the clamping portions 23, 33. The support portions 22, 32 are provided in the first clamping mechanism 20 and In the opposing direction of the second clamping mechanism 30, the first abutting surfaces 27b, 37b and the second abutting surfaces 27c, 37c, and the second abutting surfaces 27c, 37c are arranged at positions sandwiching the clamping portions 23, 33. It is arranged between the yarn joining part 10 and the clamping parts 23 and 33, and is 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 synthetic fiber yarn, for example, a splicer for 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 pulls the start and end of two synthetic fiber yarns in opposite directions into an air nozzle, and presses the end of the drawn yarn out of the air nozzle. The two sides of the air nozzle move the pressed side parts toward the air nozzle, so that the pulled-up yarn ends are slack in the air nozzle, and the yarn is spliced by the air flow in the air nozzle.

The splicer for synthetic fiber yarn is, for example, used in a yarn winding machine for winding synthetic fibers to splice the end of a yarn supplied to the bobbin and the beginning of the yarn of another supply bobbin. In the yarn winding machine, the yarn is wound on a bobbin while applying tension to the yarn to form a package. Therefore, the entanglement part of the yarns spliced by the synthetic fiber yarn with the splicer is stretched when tension is applied. In the yarn winding machine, when the entangled part is unwound during the winding of the yarn, the winding operation must be temporarily stopped to perform the operation, so the production efficiency is reduced. Therefore, the splicer for synthetic fiber yarns is required to form an entangled portion having a tensile elongation that can withstand the winding tension.

An object of one aspect of the present invention is to provide a splicer for synthetic fiber yarns that can suppress the decrease in the tensile elongation of the entangled portion.

A splicer for synthetic fiber yarns according to one aspect of the present invention is for splicing one side of the yarn and the other side composed of synthetic fibers, and includes: a yarn splicing section having a yarn forming one side and another One of the passages in the space through which the yarn can be inserted, and the injection holes that open to the passage and spray fluid; and a pair of clamping mechanisms, which are provided at positions across the passage of the yarn joining section, and the pair is inserted in one of the spaces Each of the yarn and the other yarn is clamped; and a pair of clamping mechanisms respectively have: a clamping portion that clamps each of the yarn of one side and the yarn of the other side; and supports Portion, which supports the clamping portion; the supporting portions respectively have a first abutting surface and a second abutting surface, and a second abutting surface, which are arranged in the opposite direction of the pair of clamping mechanisms at a position separated from the clamping portion It is arranged between the yarn joining part and the clamping part, and is located above the first contact surface.

In the splicer for synthetic fiber yarns according to one aspect of the present invention, one of the yarns and the other yarn composed of synthetic fibers oscillate in the passage with the clamping portion as a fixed point. In the splicer for synthetic fiber yarns, the second abutting surface is arranged between the yarn joining portion and the clamping portion, and is located above the first abutting surface. In this configuration, when arranging one yarn and the other yarn, by the weight of the one yarn and the other yarn, the one yarn and the other yarn abut at least the second Face to face. In this state, the yarn on one side and the yarn on the other side are clamped by the clamping part. When the fluid is sprayed on the yarn on one side and the yarn on the other side, the yarn on one side and the yarn on the other side are substantially Swing with the second contact surface as a fixed point. Therefore, in the splicer for synthetic fiber yarns, it is difficult for the oscillating yarn on one side and the other yarn to generate 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, the decrease in the tensile elongation of the entangled portion can be suppressed.

In one embodiment, the clamping portion may have a pair of clamping members facing each other, and the first abutting surface and the second abutting surface are provided on one clamping member and the other clamping member abutting的的位置。 The location. In this structure, one of the yarns and the other of the yarns sandwiched by the pair of clamping members can be reliably brought into contact with the second contact surface. Therefore, the one yarn and the other yarn reliably swing with the second contact surface as a fixed point. Therefore, the yarn on one side of the swing and the yarn on the other side do not generate 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. In this configuration, in the yarn of one side and the yarn of the other side, friction caused by contact with the supporting portion can be further avoided.

In one embodiment, the dimension between the first abutting surface and the second abutting surface in a direction orthogonal to the first abutting surface and the second abutting surface is 0.5 mm or more and 1.5 mm or less. In this configuration, the 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 the decrease in the tensile elongation of the complex part.

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

The synthetic fiber yarn splicer 1 shown in Fig. 1 performs the first yarn (one side yarn) Y1 (refer to Fig. 7) made of synthetic fiber and the second yarn made of synthetic fiber. A device for splicing yarn at the end of the yarn (the other yarn) Y2 (refer to Figure 7). The splicer 1 for synthetic fiber yarn is, for example, in a yarn winding machine that winds the yarn from a supply bobbin to form a package, and is used to perform the end of the yarn of one supply bobbin and the other supply bobbin The splicing yarn 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 yarn includes a main body 3 and a yarn joining mechanism 5. The main body 3 is a frame for holding the yarn joining mechanism 5. The main body 3 is composed of a first main body portion 3a and a second main body portion 3b. Viewed from the side, the main body 3 has, for example, a substantially L-shape.

The first body portion 3a is a portion that is 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. The operation part 7 is provided in the 1st main body part 3a. The operating portion 7 is a button that is operated when the splicing operation of the synthetic fiber yarn splicer 1 is performed. In this embodiment, the operating portion 7 is located on the side of one end in the longitudinal direction of the first body portion 3a (the side of the second body portion 3b), and is located within the movable range of the index finger when the first body portion 3a is held by the operator. Location.

A connecting portion 9 is provided at the lower end portion (the other end portion in the longitudinal direction) of the first body portion 3a. A pipe (illustration omitted) for supplying compressed air (fluid) (hereinafter also referred to simply as "air") is connected to the connection portion 9. The first main body part 3a may also house a switch linked to the operation of the operation part 7, and parts that branch the compressed air supplied through the connection part 9 and the like.

A yarn joining mechanism 5 is provided in the second main 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 of the first body portion 3a. Specifically, the second body portion 3b is integrally provided with the first body portion 3a so that the longitudinal direction of the second body portion 3b and the longitudinal direction of the first body portion 3a form a specific angle (for example, 90° or less). The second body portion 3b exposes the yarn joining mechanism 5. In the second body portion 3b, a driving portion (for example, a cylinder, etc.) for driving the first clamping mechanism 20 and the second clamping mechanism 30 described later is accommodated.

As shown in FIG. 2 or FIG. 3, the yarn joining mechanism 5 includes a yarn joining section 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 where the cavity 14 of the yarn joining section 10 is interposed.

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

The yarn joining nozzle 12 is a block formed of metal or ceramic material. A slit 13 is provided on the yarn joining nozzle 12. The slit 13 introduces the yarn 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 to the slit 13. The inclined surface 15 is tapered from the upper surface 12a of the yarn joining 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 chamber 14 penetrates the side surface 12b of one side of the yarn joining nozzle 12 and the side surface 12c of the other side. 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 12b and 12c, 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 the air supplied to the chamber 14 to circulate. The air flow path 16 has an injection hole 16 a opening to the chamber 14. The injection hole 16 a communicates the air flow path 16 with the chamber 14. Air is injected into the cavity 14 from the injection hole 16a. The position and diameter of the injection hole 16a in the chamber 14 may be appropriately set according to the design. A connecting portion 18 is provided on the upstream side of the air flow path 16 (the side opposite to the injection hole 16a). A supply pipe for supplying air and the like are connected to the connecting portion 18.

As shown in FIGS. 2 and 3, the first clamping mechanism 20 has a supporting 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 supporting portion 22 has a rectangular parallelepiped shape (corner column shape). As shown in FIG. 5, the supporting portion 22 has a pair of main surfaces 22a, 22b facing each other, and a pair of side surfaces 22c, 22d facing each other. The side surface 22d is a surface opposite to the side surface 12b of the yarn joining nozzle 12.

The supporting part 22 holds the clamping part 23. The support part 22 is provided to be able to swing. Specifically, as shown in FIG. 2, a shaft 21 is provided at the base end (one end in the longitudinal direction) of the support portion 22. The shaft 21 is fixed to a frame or the like not shown. The support part 22 swings around the shaft 21. The support portion 22 is close to the second position P2 (see FIG. 6B) of the yarn splicing portion 10 at the front end (the other end in the longitudinal direction), and is further away from the first position P1 of the yarn splicing portion 10 from the second position P2 than the second position P2. (Refer to Figure 6A) to move between. That is, the first clamping mechanism 20 moves between the first position P1 and the second position P2. The support part 22 is moved by the drive of the drive part (illustration omitted), such as a cylinder, for example. In this embodiment, as described above, in the support portion 22, one end in the longitudinal direction where the shaft 21 is provided is set as the base end, and the other end in the longitudinal direction opposite to the one end is set as the front end. .

The support part 22 is provided with a recessed part 25. The recessed portion 25 is provided on the front end side of the support portion 22. The recessed portion 25 opens on the main surface 22a and the pair of side surfaces 22c and 22d of the supporting 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 22a 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 22c side of the support portion 22, the recessed portion 25 has a rectangular shape.

As shown in FIG. 5, the support part 22 has the support surface 27a which slidably supports the second clamping member 26 (1st clamping member 24) mentioned later for the clamping part 23. As shown in FIG. The supporting surface 27a is provided at the central portion in the opposing direction of a pair of side surfaces 22c and 22d of the supporting portion 22. The supporting surface 27a has a shape (semi-circular shape) that is curved downward in a convex shape corresponding to the shape of the outer peripheral surface of the second clamping member 26 (first clamping member 24). The supporting surface 27 a extends along the length direction of the supporting portion 22.

The supporting portion 22 has a first contact 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 the bottom surface of the recess 25. The first contact surface 27b is a surface capable of contacting the first yarn Y1 and the second yarn Y2 clamped by the clamping portion 23. The term “abutable” means that the first yarn Y1 and the second yarn Y2 clamped by the clamping portion 23 are in contact with the first abutting surface 27b, as well as the first yarn Y1 and the second yarn Y2. When it does not contact the first contact surface 27b. The second abutting surface 27c is a surface that abuts the first yarn Y1 and the second yarn Y2 clamped by the clamping portion 23. As shown in FIG. 2, the first contact surface 27 b and the second contact surface 27 c are provided at least at positions where the first clamping member 24 and the second clamping member 26 abut.

As shown in FIG. 5, the first contact surface 27b is a flat surface continuous with one end of the support surface 27a (the end on the side surface 22c side). The second contact surface 27c is a flat surface continuous with the other end of the support surface 27a (the end on the side surface 22d side). That is, in the supporting portion 22, viewed from the opposing direction of the pair of main surfaces 22a, 22b, the second abutting surface 27c, the supporting surface 27a, and the first abutting surface 27b are provided in this order from the yarn joining portion 10 side. There are all sides. That is, the second contact surface 27c is arranged between the yarn joining portion 10 and the clamping portion 23. The second abutting surface 27c is located on the inner side in the opposing direction of the first clamping mechanism 20 and the second clamping mechanism 30, which sandwich the yarn joining portion 10 therebetween. Located on the outside in the direction.

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

In this embodiment, the positions of the first abutting surface 27b and the second abutting surface 27c in the opposing direction of one of the main surfaces 22a and 22b of the supporting portion 22 are different. The second contact surface 27c is located above the first contact surface 27b. The "upper" here refers to the opposing direction of the first clamping mechanism 20 and the second clamping mechanism 30, and the opposing direction of the first clamping member 24 and the second clamping member 26 (to be described later) ( In the direction orthogonal to the nipping direction), one of the first yarn Y1 and the second yarn Y2 is introduced. That is, it represents the upper and lower sides as shown in FIG. 5. The first contact surface 27b is located closer to the main surface 22b side than the second contact surface 27c. The second contact surface 27c is located closer to the main surface 22a side 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 opposing 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 the dimension between the first contact surface 27b and the second contact surface 27c in the direction orthogonal to the first contact surface 27b and the second contact surface 27c. The difference G may be appropriately set according to the diameters of the first clamping member 24 and the second clamping member 26 and the like. For example, when the distance D1 between the first abutting surface 27b and the main surface 22b is shortened and the difference G is increased, the first yarn Y1 and the yarn clamped by the first clamping member 24 and the second clamping member 26 can be shortened. The length of the second yarn Y2. When the lengths of the first yarn Y1 and the second yarn Y2 clamped by the first clamping member 24 and the second clamping member 26 become shorter, the clamping portion 23 may not be able to stably clamp the first yarn Y1 and Y2. 1 yarn Y1 and second yarn Y2. Therefore, it is preferable to appropriately set the difference G based on experiments or the like to the extent that the first yarn Y1 and the second yarn Y2 can be stably clamped in the clamping portion 23.

The second contact surface 27c and the side surface 22d form 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, it is possible to prevent the first yarn Y1 and the second yarn Y2 from being damaged.

As shown in FIG. 2, the clamping portion 23 has a first clamping member 24 and a second clamping member 26. The first clamping member 24 and the second clamping member 26 each have a cylindrical shape. The first clamping member 24 and the second clamping member 26 are each formed of, for example, abrasion-resistant metal such as SUS. The diameter of each of the first clamping member 24 and the second clamping member 26 may be appropriately set.

The first clamping member 24 and the second clamping 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 arranged on the front end portion side of the support portion 22, and the second clamping member 26 is arranged on the proximal end portion side of the support portion 22 with respect to the first clamping member 24. In the first clamping mechanism 20, the clamping portion 23 clamps the yarn between the end surface of the first clamping member 24 and the end surface of the second clamping member 26, thereby holding the yarn.

A part of the first clamping member 24 is accommodated in the supporting part 22, and a part of the first clamping member 24 is exposed in the recess 25 of the supporting part 22. The first clamping member 24 may be fixed to the supporting portion 22, or it may be provided so as to be freely movable in the opposing direction (hereinafter, also referred to as the "opposing direction") between the first clamping member 24 and the second clamping member 26 (It can slide on the support surface 27a).

A part of the second clamping member 26 is accommodated in the supporting part 22, and a part of the second clamping member 26 is exposed in the recess 25 of the supporting part 22. The second clamping member 26 is provided in the support portion 22 so as to be movable. The second clamping member 26 moves in the above-mentioned opposing direction. The second clamping member 26 is urged toward the first clamping member 24 by a urging member (not shown) such as a spring. That is, the second clamping member 26 and the first clamping member 24 are in a state where no force other than the urging member is applied to the second clamping member 26, the end faces of each other are abutted by the force of the urging member. catch.

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

As shown in FIGS. 2 and 3, the second clamping mechanism 30 has a supporting 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 column shape). As shown in FIG. 5, the support portion 32 has a pair of main surfaces 32a, 32b facing each other, and a pair of side surfaces 32c, 32d facing each other. The side surface 32d is a surface opposite to the side surface 12c of the yarn joining nozzle 12.

The supporting part 32 holds the clamping part 33. The support portion 32 is provided to be able to swing. Specifically, as shown in FIG. 2, a shaft 31 is provided at the base end (one end in the longitudinal direction) of the support portion 32. The shaft 31 is fixed to a frame or the like not shown. The support portion 32 swings around the shaft 31. The support portion 32 is close to the second position P2 (see FIG. 6B) of the yarn splicing portion 10 at the front end portion (the other end in the longitudinal direction), and is further away from the first position P1 of the yarn splicing portion 10 from the second position P2 than the second position P2. (Refer to Figure 6A) to move between. That is, the first clamping mechanism 20 moves between the first position P1 and the second position P2. The support part 32 is moved by the drive of the drive part (illustration omitted), such as a cylinder, for example. The driving part may be the same as the driving part of the driving support part 22, or may be provided separately. In the present embodiment, as described above, in the support portion 32, one end in the longitudinal direction where the shaft 31 is provided is set as the base end, and the other end in the longitudinal direction opposite to the one end is set as the front end. .

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

As shown in FIG. 5, the support part 32 has the support surface 37a which slidably supports the second clamping member 36 (1st clamping member 34) mentioned later in the clamping part 33. As shown in FIG. The supporting surface 37a is provided at the central portion in the opposing direction of a pair of side surfaces 32c and 32d of the supporting portion 32. The support surface 37a has a shape (semicircle shape) that is curved downward in a convex shape corresponding to the shape of the outer peripheral surface of the second clamping member 36 (first clamping member 34). The supporting surface 37 a extends along the length direction of the supporting portion 32.

The support portion 32 has a first contact surface 37b and a second contact surface 37c at a position where the support surface 37a is interposed along the opposing direction of the pair of side surfaces 32c and 32d. The first contact surface 37 b and the second contact surface 37 c constitute the bottom surface of the recess 35. The first contact surface 37b is a surface capable of contacting the first yarn Y1 and the second yarn Y2 clamped by the clamping portion 33. The second abutting surface 37c is a surface that abuts the first yarn Y1 and the second yarn Y2 clamped by the clamping portion 33. As shown in FIG. 2, the first contact surface 37 b and the second contact surface 37 c are provided at least at a position where the first clamping member 34 and the second clamping member 36 abut.

As shown in FIG. 5, the first contact surface 37b is a flat surface continuous with one end of the support surface 37a (the end on the side surface 32c side). The second contact surface 37c is a flat surface continuous with the other end of the supporting surface 37a (the end on the side surface 32d side). That is, in the supporting portion 32, when viewed from the opposing direction of the pair of main surfaces 32a and 32b, the second abutting surface 37c, the supporting surface 37a, and the first abutting surface 37b are arranged in the order from the yarn joining portion 10 side. There are all sides. That is, the second contact surface 37c is arranged between the yarn joining portion 10 and the clamping portion 33. The second abutting surface 37c is located on the inner side in the opposing direction of the first clamping mechanism 20 and the second clamping mechanism 30, which sandwich the yarn joining portion 10 therebetween. Located on the outside 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 over 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 over the support surface 37a and the side surface 32d.

In this embodiment, the positions of the first contact surface 37b and the second contact surface 37c in the opposing direction of one of the main surfaces 32a and 32b of the support portion 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 side than the second contact surface 37c. The second contact surface 37c is located closer to the main surface 32a side 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 and the first contact surface 27b of the first clamping mechanism 20 are at the same position, and the second contact surface 37c and the second contact surface 27c of the first clamping mechanism 20 are at the same position.

The difference G between the first contact surface 37b and the second contact surface 37c in the opposing direction of the pair of main surfaces 32a, 32b is, for example, 0.5 mm or more and 1.5 mm or less. The difference G may be appropriately set according to the diameters of the first clamping member 34 and the second clamping member 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 clamping portion 33 has a first clamping member 34 and a second clamping member 36. The first clamping member 34 and the second clamping member 36 each have a cylindrical shape. The first clamping member 34 and the second clamping member 36 are each formed of, for example, abrasion-resistant metal such as SUS. The diameter of each of the first clamping member 34 and the second clamping member 36 may be appropriately set.

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

A part of the first clamping member 34 is accommodated in the supporting part 32, and a part of the first clamping member 34 is exposed in the recess 35 of the supporting part 32. The first clamping member 34 may be fixed to the supporting portion 32, or may be provided so as to be movable in the opposing direction of the first clamping member 34 and the second clamping member 36 (slidable on the supporting surface 37a).

A part of the second clamping member 36 is accommodated in the supporting part 32, and a part of the second clamping member 36 is exposed in the recess 35 of the supporting part 32. The second clamping member 36 is provided in the support portion 32 so as to be movable. The second clamping member 36 moves in the above-mentioned opposing direction. The second clamping member 36 is urged toward the first clamping member 34 by a urging member (not shown) such as a spring. That is, the second clamping member 36 and the first clamping member 34 are in a state where no force other than the urging member is applied to the second clamping member 36, the end faces of each other are abutted by the force of the urging member. catch.

The second clamping member 36 moves in conjunction with the movement of the support portion 32. The second clamping member 36 moves in a direction away from the first clamping member 34 by the movement of the support portion 32 from the second position P2 (refer to FIG. 6B) to the first position P1 (FIG. 6A). Specifically, when the support portion 32 moves from the second position P2 to the first position P1, the second clamping member 36 is moved in a direction opposite to the urging direction of the urging member by a cam mechanism or the like, not shown. Press down. Thereby, in the clamping portion 33, a gap (space) is formed between the first clamping member 34 and the second clamping member 36. Furthermore, the movement of the second clamping member 36 does not need to be interlocked with the movement of the support portion 32.

Next, the formation method (yarn splicing method) of the entanglement part using the splicer 1 for synthetic fiber yarns is demonstrated.

First, as shown in FIG. 6A, the first yarn Y1 and the second yarn Y2 are set in the splicer 1 for synthetic fiber yarns. Specifically, the first yarn Y1 and the second yarn Y2 are located in the chamber 14 through the slit 13 of the yarn joining section 10, and are arranged in the first clamping mechanism 20 and the second clamping mechanism 20 located at the first position P1. Institution 30. In more detail, the first yarn Y1 and the second yarn Y2 are arranged between the first clamping member 24 and the second clamping member 26 of the first clamping mechanism 20, and are arranged in the second clamping mechanism 30 between the first clamping member 34 and the second clamping member 36. Thereby, the first yarn Y1 and the second yarn Y2 are placed on the first abutting surface 27b and the second abutting surface 27c of the first clamping mechanism 20, and are placed on the second clamping 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 synthetic fiber yarn splicer 1, the operation section 7 is operated (pressed). Thereby, in the splicer 1 for synthetic fiber yarn, the driving part is operated, and the first clamping mechanism 20 and the second clamping mechanism 30 are operated.

Specifically, in the first clamping mechanism 20, the first clamping member 24 and the second clamping member 26 clamp the first yarn Y1 and the second yarn Y2. In the second clamping mechanism 30, the first clamping member 34 and the second clamping member 36 clamp the first yarn Y1 and the second yarn Y2. After that, as shown in FIG. 6B, the first clamping mechanism 20 and the second clamping mechanism 30 move 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 between the clamping portion 23 and the clamping portion 33 in a relaxed state. In addition, the first yarn Y1 and the second yarn Y2 are held in a state of contacting at least the second contact surface 27c and the second contact surface 37c.

In addition, when the operation unit 7 is operated, air is injected into the chamber 14 from the injection hole 16 a via the air flow path 16. Thereby, the first yarn Y1 and the second yarn Y2 located in the cavity 14 are spliced by the action of air and form an entanglement part.

Next, the operation of the operation part 7 is released. Thereby, in the splicer 1 for synthetic fiber yarns, the injection of air from the injection hole 16a to the chamber 14 is stopped, and the first clamping mechanism 20 and the second clamping mechanism 30 operate.

Specifically, as shown in FIG. 6A, the first clamping mechanism 20 and the second clamping mechanism 30 move from the second position P2 to the first position P1. Along with this action, in the first clamping mechanism 20, the second clamping member 26 moves in a direction away from the first clamping member 24, and the first clamping member 24 and the second clamping member 26 are released from the first yarn. Clamping of the thread Y1 and the second yarn Y2. Also in the second clamping mechanism 30, the second clamping member 36 moves in a direction away from the first clamping member 34, and the first clamping member 34 and the second clamping member 36 are released from the first yarn Y1. And the clamping of the second yarn Y2. Furthermore, after the first clamping mechanism 20 moves from the second position P2 to the first position P1, the first clamping member 24 and the second clamping member 26 may be released from the first yarn Y1 and the second yarn. The clamping of Y2. Similarly, after the second clamping mechanism 30 moves from the second position P2 to the first position P1, the first clamping member 34 and the second clamping member 36 may be released from the first yarn Y1 and the second yarn Y2. The clamping. With the above, the splicer 1 for synthetic fiber yarn completes the splicing of 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 synthetic fiber yarn splicer 1 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 contact surface 27b and the second contact surface 27c of the support portion 22A is the same as that of the present embodiment. The first abutting surface 27b and the second abutting surface 27c in the supporting portion 22 of the 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 also has the same structure.

In this structure, the first yarn Y1 and the second yarn Y2 sometimes come into contact with the second abutting surface when the clamping portions 23 and 33 are swung in the cavity 14 as fixed points by the jet of air. 27c, 37c contact. In this way, when the first yarn Y1 and the second yarn Y2 come into contact with the second contact surfaces 27c and 37c, friction occurs due to the contact. As a result, the first yarn Y1 and the second yarn Y2 may be damaged in some way and the entangled portion may not be formed properly. As a result, in the structure of the comparative example, the tensile elongation of the entangled part is reduced.

On the other hand, in the splicer 1 for synthetic fiber yarns of this embodiment shown in FIG. 7, the 2nd contact surface 27c, 37c is located in the upper position rather than the 1st contact surface 27b, 37b. In this configuration, the first yarn Y1 and the second yarn Y2 swing in the cavity 14 with the clamping portions 23 and 33 as fixed points. Here, the second abutting surfaces 27c and 37c are located above the first abutting 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, 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 clamping portion 23 and the clamping portion 33. When air is sprayed toward the first yarn Y1 and the second yarn Y2, the first yarn Y1 And the second yarn Y2 oscillates substantially with the second abutting surfaces 27c and 37c as fixed points. Therefore, in the splicer 1 for synthetic fiber yarns, the first yarn Y1 and the second yarn Y2 that oscillate are unlikely to generate friction due to contact with the support portions 22 and 32. Therefore, in the splicer 1 for synthetic fiber yarns, the entangled portion can be appropriately formed. As a result, in the splicer 1 for synthetic fiber yarns, the decrease in the tensile elongation of the entangled portion can be suppressed.

Specifically, the effects of the splicer 1 for synthetic fiber yarns will be described based on Examples and Comparative Examples. In FIGS. 9A to 9D, the measured value of the tensile elongation of the synthetic fiber that does not form an entangled part is taken as the reference value. For the examples and comparative examples, the reduction (%) of the tensile elongation from the reference value is shown. The example shows the result of forming the yarn of the entanglement part by the splicer 1 for synthetic fiber yarn of this embodiment. The comparative example shows the result of forming the yarn of the entanglement part by the splicer for synthetic fiber yarn equipped with the yarn joining mechanism 5A shown in FIG. 8. Using TENSORAPID4 (trade name) manufactured by USTER, four types of yarns (Yarn A~Yarn D) with different thickness and molecular structure were measured. Each yarn system is pre-oriented yarn (POY: Pre Oriented Yarn).

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

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

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

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

As described above, in the case of forming the entangled part by the synthetic fiber yarn splicer 1 of the present embodiment among the four yarns (yarn A to yarn D) with different thickness and molecular structure, compare with Compared with the examples, the reduction in tensile elongation is relatively small. Therefore, it can be confirmed that when the entangled portion is formed by the splicer 1 for synthetic fiber yarn, the decrease in the tensile elongation can be suppressed. Furthermore, under normal circumstances, when the types of yarns (such as thickness, number of filaments) are different, the value of the tensile elongation is different, so the allowable reduction ratio of the tensile elongation is also different.

In the synthetic fiber yarn splicer 1 of the present embodiment, the clamping portions 23 and 33 have first clamping members 24 and 34 and second clamping members 26 and 36 facing each other. The first contact surfaces 27b, 37b and the second contact surfaces 27c, 37c are provided at positions where the first clamping members 24, 34 and the second clamping members 26, 36 abut. In this configuration, the first yarn Y1 and the second yarn Y2 clamped by the first clamping members 24, 34 and the second clamping members 26, 36 can be reliably made to contact the second abutting surfaces 27c, 37c. Abut. Therefore, the first yarn Y1 and the second yarn Y2 reliably swing with the second contact surfaces 27c and 37c as fixed points. Therefore, in the swinging first yarn Y1 and second yarn Y2, friction due to contact with the supporting portions 22 and 32 does not occur. 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 synthetic fiber yarn splicer 1 of this embodiment, the second contact surfaces 27c and 37c are flat surfaces extending in the opposing direction of the first clamping mechanism 20 and the second clamping mechanism 30. In this structure, in the swinging first yarn Y1 and second yarn Y2, friction caused by contact with the support portions 22 and 32 can be further avoided.

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

6.0 mm，噴射孔16a之直徑為

1.3 mm之構成中之結果。於圖10B中，表示於合成纖維紗用捻接器1中，腔室14之直徑為

3.5 mm，噴射孔16a之直徑為

1.0 mm之構成中之結果。於圖10A及圖10B中，對於差G為0 mm、0.5 mm、1.0 mm及1.5 mm之情形分別進行了六次測定。Specifically, based on the measurement result, the effect of the difference G between the first abutting surfaces 27b and 37b and the second abutting surfaces 27c and 37c will be described. Figures 10A and 10B show the results of the measurement when the difference G is 0 mm, 0.5 mm, 1.0 mm, and 1.5 mm. In FIG. 10A and FIG. 10B, the measured value of the tensile elongation of the synthetic fiber that does not form an entangled part is set as a reference value, and each difference G represents the decrease (%) of the tensile elongation from the reference value. TENSORAPID4 (trade name) manufactured by USTER was used in the measurement. In FIG. 10A, the diameter of the cavity 14 is shown in the splicer 1 for synthetic fiber yarns

6.0 mm, the diameter of the jet hole 16a is

The result in 1.3 mm composition. As shown in FIG. 10B, the diameter of the cavity 14 in the splicer 1 for synthetic fiber yarn is

3.5 mm, the diameter of the jet hole 16a is

The result in the 1.0 mm configuration. In Fig. 10A and Fig. 10B, six measurements were made for the cases where the difference G is 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, there is no difference in the height positions of the first abutting surfaces 27b, 37b and the second abutting surfaces 27c, 37c (the same In the case of the height position), the decrease in tensile elongation has a deviation. 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 decrease is 7.0%, and in the measurement result shown in FIG. 10B, the decrease is The difference between the maximum value and the minimum value is 10.1%. In contrast, when the difference G is 0.5 mm, 1.0 mm, and 1.5 mm, the deviation of the reduction amount is smaller compared with the case where the difference G is 0 mm. In addition, when the difference G is 0.5 mm, 1.0 mm, and 1.5 mm, the average decrease in tensile elongation is smaller than when the difference G is 0 mm. Therefore, it can be confirmed that when the entangled portion is formed by the splicer 1 for synthetic fiber yarn, the variation in the decrease in the tensile elongation can be suppressed, and the decrease in the tensile elongation can be suppressed.

As mentioned above, the embodiment of the present invention has been described, but the present invention is not necessarily limited to the above-mentioned embodiment, and various changes can be made without departing from the gist of the present invention.

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

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

In the above-mentioned embodiment, the mode in which the support parts 22 and 32 move to the first position P1 and the second position P2 by swinging around the shafts 21 and 31 has been described as an example. However, the supporting parts 22 and 32 may be moved in a direction to approach each other and a direction to move away from each other in a state of being parallel to each other, for example.

In the above embodiment, the following configuration has been described as an example: the first yarn Y1 and the second yarn Y2 are arranged at the first clamping mechanism 20 and the second clamping 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 injected into the cavity 14 from the injection hole 16a to form an entangled portion. However, the formation method of the entanglement part using the splicer 1 for synthetic fiber yarns is not limited to this.

For example, after arranging the first yarn Y1 and the second yarn Y2 in the first clamping mechanism 20 and the second clamping mechanism 30 at the second position P2, the first clamping mechanism 20 and the second clamping mechanism 20 and the second clamping mechanism 30 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, they are aligned from the injection hole 16a The chamber 14 sprays air to form a complex part.

In the above-mentioned embodiment, the mode in which the synthetic fiber yarn splicer 1 is a manual splicer which is gripped and used by an operator has been described 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‧‧‧Second body part 5‧‧‧Yarn splicing mechanism 7‧‧‧Operation Department 9‧‧‧Connecting part 10‧‧‧Yarn splicing section 12‧‧‧Yarn splicing nozzle 12a‧‧‧Upper surface 12b‧‧‧The side of one side 12c‧‧‧The side of the other side 13‧‧‧Slit 14‧‧‧Chamber (passage) 14a‧‧‧Inner peripheral surface 15‧‧‧Sloped surface 16‧‧‧Air flow path 16a‧‧‧Spray hole 18‧‧‧Connecting part 20‧‧‧The first clamping mechanism 20A‧‧‧The first clamping mechanism 22‧‧‧Support Department 22a‧‧‧Main side 22b‧‧‧Main side 22c‧‧‧Side 22d‧‧‧Side 23‧‧‧Clamping part 24‧‧‧The first clamping member 25‧‧‧Clamping part 26‧‧‧Second clamping member 27a‧‧‧Support surface 27b‧‧‧First abutment surface 27c‧‧‧Second abutment surface 30‧‧‧Second clamping mechanism 30A‧‧‧Second clamping mechanism 32‧‧‧Support Department 32A‧‧‧Support Department 32a‧‧‧Main side 32b‧‧‧Main side 32c‧‧‧Side 32d‧‧‧ side 33‧‧‧Clamping part 34‧‧‧The first clamping member 35‧‧‧Concave 36‧‧‧Second clamping member 37a‧‧‧Support surface 37b‧‧‧First abutment surface 37c‧‧‧Second abutment surface D1‧‧‧Distance D2‧‧‧Distance G‧‧‧Poor P1‧‧‧1st position P2‧‧‧2nd position Y1‧‧‧The first yarn (a yarn of one side) Y2‧‧‧The second yarn (the other yarn)

Fig. 1 is a perspective view showing an embodiment of a splicer for synthetic fiber yarn. Figure 2 is a view of the yarn joining mechanism viewed from above. Figure 3 is a side view of the yarn splicing mechanism. Figure 4 is a cross-sectional view of the yarn joining part. Fig. 5 is a cross-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 diagram showing a state in which the yarn joining mechanism holds the yarn. Fig. 8 is a diagram showing a yarn joining mechanism of a comparative example. Fig. 9A is a diagram showing an embodiment and a comparative example. Fig. 9B is a diagram showing an embodiment and a comparative example. Fig. 9C is a diagram showing an embodiment and a comparative example. Fig. 9D is a diagram showing an embodiment and a comparative example. Fig. 10A is a graph showing the measurement results. Fig. 10B is a graph showing the measurement results.

5‧‧‧Yarn splicing mechanism

10‧‧‧Yarn splicing section

12‧‧‧Yarn splicing nozzle

12a‧‧‧Upper surface

12b‧‧‧The side of one side

12c‧‧‧The side of the other side

14‧‧‧Chamber (passage)

16a‧‧‧Spray hole

20‧‧‧The first clamping mechanism

22‧‧‧Support Department

22a‧‧‧Main side

22b‧‧‧Main side

22c‧‧‧Side

22d‧‧‧Side

23‧‧‧Clamping part

24‧‧‧The first clamping member

25‧‧‧Clamping part

27a‧‧‧Support surface

27b‧‧‧First abutment surface

27c‧‧‧Second abutment surface

30‧‧‧The first clamping mechanism

32‧‧‧Support Department

32a‧‧‧Main side

32b‧‧‧Main side

32c‧‧‧Side

32d‧‧‧ side

33‧‧‧Clamping part

34‧‧‧The first clamping member

35‧‧‧Concave

37a‧‧‧Support surface

37b‧‧‧First abutment surface

37c‧‧‧Second abutment surface

D1‧‧‧Distance

D2‧‧‧Distance

G‧‧‧Poor

Claims (5)

A splicer for synthetic fiber yarns, which performs the splicing of one yarn and the other yarn made of synthetic fibers, and is provided with: a yarn splicing section having a yarn for forming the above-mentioned one and the above-mentioned other One of the passages in the space through which the yarn is inserted, and the ejection holes that open to the passage and eject fluid; and a pair of clamping mechanisms, which are provided at the positions of the passages intervening the yarn splicing portion, and are inserted in Each of the above-mentioned one yarn and the above-mentioned other yarn in the space is clamped; and a pair of the above-mentioned clamping mechanisms respectively have: clamping portions for clamping the above-mentioned one yarn and the above-mentioned other yarn And a supporting part which supports the clamping part; and the supporting part respectively has a first abutment arranged at a position separated from the clamping part in the opposing direction of a pair of the clamping mechanism The contact surface and the second contact surface. The second contact surface is disposed between the yarn joining portion and the clamping portion, and is located above the first contact surface. The splicer for synthetic fiber yarns of claim 1, wherein the clamping portion has a pair of clamping members facing each other, and the first abutting surface and the second abutting surface are provided on one of the clamping members The position where the member abuts against the other clamping member. The splicer for synthetic fiber yarns according to claim 1, wherein the second abutting surface is a flat surface extending along the opposing direction of the pair of clamping mechanisms. The splicer for synthetic fiber yarns according to claim 2, wherein the second abutting surface is a flat surface extending along the opposing direction of the pair of clamping mechanisms. The splicer for synthetic fiber yarns according to any one of claims 1 to 4, wherein the first abutting surface and the first abutting surface in a direction orthogonal to the first abutting surface and the second abutting surface are 2 The size between the abutting surfaces is 0.5mm or more and 1.5mm or less.

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