Splice nozzle and take-up device

Abstract

The present application provides a joint nozzle and a winding device. The joint nozzle performs joint by injection of compressed air. The joint nozzle has: a nozzle body; an upstream joint chamber formed in the nozzle body, having a planar wall in a part of an inner wall; a downstream joint chamber formed in the nozzle body, communicating with the upstream joint chamber, having a planar wall in a part of an inner wall; a first upstream injection hole and a second upstream injection hole formed in the nozzle body, injecting compressed air toward the upstream joint chamber; and a first downstream injection hole and a second downstream injection hole formed in the nozzle body, injecting compressed air toward the downstream joint chamber. The first upstream injection hole injects compressed air along the planar wall of the upstream joint chamber. The first downstream injection hole injects compressed air along the planar wall of the downstream joint chamber.

Description

Technical Field

[0001] This invention relates to a connector nozzle and a winding device. Background Technology

[0002] As a technology related to splicing nozzles, for example, the splicer nozzle described in Japanese Patent Application Publication No. 2010-30705 is known. The splicer nozzle described in Japanese Patent Application Publication No. 2010-30705 has a splicing chamber formed to receive the ends of two yarns and to splice them. A fluid injection passage for injecting compressed air into the splicing chamber is provided on the inner wall surface of the splicing chamber. A planar portion is formed on the inner wall surface of the splicing chamber, where the injected compressed air directly impacts the plane. Summary of the Invention

[0003] In the aforementioned splicing devices, the strength of the seam may be insufficient, depending on factors such as the type of yarn being spliced. Therefore, in recent years, there has been a demand for splicing devices capable of handling various types of yarns.

[0004] Therefore, the object of the present invention is to provide a splicing nozzle and winding device capable of handling various yarns.

[0005] One embodiment of the present invention provides a connector nozzle that performs connectoring by injecting compressed air, comprising: a nozzle body; an upstream connector chamber formed in the nozzle body, having a planar wall on a portion of its inner wall; a downstream connector chamber formed in the nozzle body and communicating with the upstream connector chamber, having a planar wall on a portion of its inner wall; a first upstream injection hole and a second upstream injection hole formed in the nozzle body, injecting compressed air toward the upstream connector chamber; and a first downstream injection hole and a second downstream injection hole formed in the nozzle body, injecting compressed air toward the downstream connector chamber, wherein the first upstream injection hole injects compressed air along the planar wall of the upstream connector chamber, and the first downstream injection hole injects compressed air along the planar wall of the downstream connector chamber.

[0006] In this joint nozzle, compressed air is injected along the planar wall of the upstream joint chamber from the first upstream injection orifice. The two yarns forming the seam, in their aligned state, flow along the planar wall due to the compressed air flow and rebound, approaching the first upstream injection orifice. The two yarns approaching the first upstream injection orifice again flow along the planar wall and rebound, repeating this action in a dancing motion. The same applies to the first downstream injection orifice. Thus, the two yarns can be effectively wound to form a seam, ensuring sufficient seam strength even when joining various types of yarns. It can handle a wide variety of yarns.

[0007] In one embodiment of the splice nozzle of the present invention, the planar wall of the upstream splice chamber, viewed from the yarn travel direction, may be inclined at 15° to 30° relative to the injection direction of the compressed air from the first upstream injection hole, and the planar wall of the downstream splice chamber, viewed from the yarn travel direction, may be inclined at 15° to 30° relative to the injection direction of the compressed air from the first downstream injection hole. In this case, by injecting compressed air from the first upstream injection hole and the first downstream injection hole, the two yarns can be wound more effectively to form a seam.

[0008] In one embodiment of the splice nozzle of the present invention, the planar wall of the upstream splice chamber, viewed from the yarn travel direction, may be inclined at 20° to 25° relative to the injection direction of the compressed air from the first upstream injection hole, and the planar wall of the downstream splice chamber, viewed from the yarn travel direction, may be inclined at 20° to 25° relative to the injection direction of the compressed air from the first downstream injection hole. In this case, by injecting compressed air from the first upstream injection hole and the first downstream injection hole, the two yarns can be wound more effectively to form a seam.

[0009] In one embodiment of the nozzle of the present invention, the boundary line formed between the planar wall in the inner wall of the upstream connector chamber and other wall surfaces may be configured to connect with at least a portion of the edge of the first upstream injection hole, and the boundary line formed between the planar wall in the inner wall of the downstream connector chamber and other wall surfaces may be configured to connect with at least a portion of the edge of the first downstream injection hole. With this configuration, a method capable of handling various yarns can be specifically achieved. Furthermore, the air ejected from the first upstream injection hole and the first downstream injection hole flows continuously along the planar wall, thus preventing airflow turbulence and ensuring that the effect on the yarn is not disrupted.

[0010] In one embodiment of the nozzle of the present invention, the first upstream injection hole and the first downstream injection hole may be circular, with the boundary line of the inner wall of the upstream connector chamber overlapping the tangent of the circular shape of the first upstream injection hole, and the boundary line of the inner wall of the downstream connector chamber overlapping the tangent of the circular shape of the first downstream injection hole. With this configuration, a method capable of handling various yarns can be specifically achieved.

[0011] In one embodiment of the nozzle of the present invention, the first upstream injection hole and the first downstream injection hole may be polygonal in shape, with the boundary line of the inner wall of the upstream junction chamber overlapping one side of the polygonal shape of the first upstream injection hole, and the boundary line of the inner wall of the downstream junction chamber overlapping one side of the polygonal shape of the first downstream injection hole. With this configuration, a method capable of handling various yarns can be specifically achieved.

[0012] In one embodiment of the nozzle of the present invention, the inner surface of the first upstream injection hole may be configured to be connected to the planar wall of the upstream connector chamber, and the inner surface of the first downstream injection hole may be configured to be connected to the planar wall of the downstream connector chamber. With this configuration, a method capable of handling the aforementioned effects for various yarns can be specifically achieved.

[0013] In one embodiment of the nozzle of the present invention, the upstream and downstream splicing chambers may be offset from each other in a predetermined direction when viewed from the yarn travel direction, and the compressed air injection directions of the first upstream injection hole and the first downstream injection hole are along the predetermined direction and facing opposite directions. Thus, when viewed from the yarn travel direction, the first upstream injection hole and the first downstream injection hole can be symmetrically configured in the predetermined direction.

[0014] In one embodiment of the splicing nozzle of the present invention, the upstream splicing chamber and the downstream splicing chamber may each have a portion of their inner walls that are arc-shaped when viewed from the yarn travel direction. A second upstream injection hole injects compressed air along the tangential direction of the curved wall of the upstream splicing chamber when viewed from the yarn travel direction, and a second downstream injection hole injects compressed air along the tangential direction of the curved wall of the downstream splicing chamber when viewed from the yarn travel direction. In this case, the compressed air injected tangentially from the second upstream and second downstream injection holes primarily transmits rotational force to the yarns, effectively winding the fibers at the ends of the two yarns. Therefore, even when splicing various yarns, the strength of the seam can be sufficiently maintained.

[0015] In one embodiment of the connector nozzle of the present invention, the connector nozzle may also include a groove provided in the nozzle body, extending along the yarn travel direction, and having its bottom side communicating with the upstream and downstream connector chambers. A second upstream injection hole and a second downstream injection hole open at the bottom side of the groove. In this case, with the groove configuration, by injecting compressed air from the second upstream and downstream injection holes, it is possible to prevent the yarn from slipping out of the upstream and downstream connector chambers via the groove.

[0016] In one embodiment of the splicing nozzle of the present invention, the planar wall of the upstream splicing chamber, viewed from the yarn travel direction, may be positioned closer to the groove portion than the center of the upstream splicing chamber, and the planar wall of the downstream splicing chamber, viewed from the yarn travel direction, may be positioned closer to the groove portion than the center of the downstream splicing chamber. With this configuration, a method capable of handling the aforementioned effects for various types of yarn can be specifically achieved. Furthermore, it can prevent yarn from flying out of the groove portion towards the outside of the splicing nozzle.

[0017] In one embodiment of the connector nozzle of the present invention, the second upstream injection hole and the second downstream injection hole may be located between the first upstream injection hole and the first downstream injection hole in the yarn travel direction. In this case, compared with the case where the first upstream injection hole and the first downstream injection hole are located between the second upstream injection hole and the second downstream injection hole in the yarn travel direction, it is possible to suppress the yarn from coming out of the upstream connector chamber and the downstream connector chamber.

[0018] One aspect of the winding apparatus of the present invention includes: the aforementioned splice nozzle; a support body for supporting the splice nozzle; and a control unit for controlling the injection of compressed air into the splice nozzle. In this splicing apparatus, the aforementioned splice nozzle also achieves the aforementioned effect, namely, the ability to handle various types of yarns.

[0019] Alternatively, one embodiment of the winding apparatus of the present invention may include a control mode for splicing a first type of yarn and a second type of yarn. The control unit is configured to execute a control mode in which compressed air is injected from a first upstream injection hole and a first downstream injection hole, compressed air is injected from a second upstream injection hole and a second downstream injection hole, and simultaneously compressed air injection from both the first upstream and first downstream injection holes is stopped. In this case, both the first type of yarn and the second type of yarn can be handled.

[0020] Alternatively, one embodiment of the winding device of the present invention may include a control mode for splicing a third type of yarn. The control unit is configured to execute a control mode in which compressed air is first injected from a first upstream injection hole and a first downstream injection hole; compressed air is then injected from a second upstream injection hole and a second downstream injection hole; the injection of compressed air from the first upstream injection hole and the first downstream injection hole is stopped; the injection of compressed air from the first upstream injection hole and the first downstream injection hole is restarted; the injection of compressed air from the second upstream injection hole and the second downstream injection hole is stopped; and the injection of compressed air from the first upstream injection hole and the first downstream injection hole is stopped again. In this case, the third type of yarn can be handled.

[0021] Alternatively, one embodiment of the winding device of the present invention may include a control mode for splicing a fourth type of yarn. The control unit is configured to execute a control mode in which compressed air is first injected from the second upstream injection hole and the second downstream injection hole; compressed air is then first injected from the first upstream injection hole and the first downstream injection hole; the injection of compressed air from the second upstream injection hole and the second downstream injection hole is stopped; the injection of compressed air from the second upstream injection hole and the second downstream injection hole is restarted; the injection of compressed air from the first upstream injection hole and the first downstream injection hole is stopped; and the injection of compressed air from the second upstream injection hole and the second downstream injection hole is stopped. In this case, the fourth type of yarn can be handled.

[0022] Alternatively, one embodiment of the winding device of the present invention includes a control mode for splicing a fifth type of yarn. This winding device includes a yarn shrinkage suppression bar that clamps the fifth type of yarn between itself and a support. The control unit is configured to execute the following control mode: In this control mode, while the fifth type of yarn is clamped by the yarn shrinkage suppression bar, compressed air is injected from a first upstream injection hole and a first downstream injection hole; the injection of compressed air from the first upstream injection hole and the first downstream injection hole is stopped; while the clamping state of the yarn shrinkage suppression bar is released, compressed air is injected from the first upstream injection hole and the first downstream injection hole, and compressed air is injected from a second upstream injection hole and a second downstream injection hole; then, the injection of compressed air from the first upstream injection hole and the first downstream injection hole and the second upstream injection hole and the second downstream injection hole are simultaneously stopped. In this case, the fifth type of yarn can be handled.

[0023] Alternatively, one embodiment of the winding apparatus of the present invention may include a control mode for splicing a sixth type of yarn. The control unit is configured to execute a control mode in which compressed air is injected from a first upstream injection hole and a first downstream injection hole, then the injection of compressed air from the first upstream injection hole and the first downstream injection hole is stopped, and then compressed air is injected from a second upstream injection hole and a second downstream injection hole, and then the injection of compressed air from the second upstream injection hole and the second downstream injection hole is stopped. In this case, the sixth type of yarn can be handled.

[0024] Alternatively, one embodiment of the winding device of the present invention may include a pressure adjusting unit that adjusts the injection pressure from at least one of the first upstream injection hole, the second upstream injection hole, the first downstream injection hole, and the second downstream injection hole. In this case, the pressure adjusting unit can, for example, control the winding of the two yarns according to the type of yarn.

[0025] According to the present invention, it is possible to provide a splicing nozzle and a winding device that can handle various types of yarns. Attached Figure Description

[0026] Figure 1 This is a front view of the automatic winding machine shown in the embodiment.

[0027] Figure 2 This is a side view showing the winding unit of the embodiment.

[0028] Figure 3 This is a front view showing the connector device of the embodiment.

[0029] Figure 4A This is a perspective view showing the front side of the connector portion in the embodiment. Figure 4B This is a perspective view showing the rear side of the connector portion in the embodiment.

[0030] Figure 5 The nozzle of the embodiment is along Figure 4A A partial sectional view of AA.

[0031] Figure 6 This is a diagram showing the outline configuration of the connector device in the embodiment.

[0032] Figure 7 The nozzle of the embodiment is along Figure 6 An enlarged sectional view of the CC line.

[0033] Figure 8 This describes the compressed air ejected from the first upstream injection port. Figure 7 The corresponding sectional view.

[0034] Figure 9 This describes the compressed air ejected from the second upstream injection port. Figure 7 The corresponding sectional view.

[0035] Figure 10A This diagram illustrates an example of the timing conditions for compressed air injection in the case of splicing cotton worsted yarn. Figure 10B This diagram illustrates an example of the timing conditions for compressed air injection in the case of splicing polyester yarn.

[0036] Figure 11A This diagram illustrates an example of the timing conditions for compressed air injection in the case of splicing acrylic yarn. Figure 11B This diagram illustrates an example of the timing conditions for compressed air injection in the case of joining combed yarn.

[0037] Figure 12A This diagram illustrates an example of the timing conditions for compressed air injection in the case of splicing core-spun yarn. Figure 12BThis diagram illustrates an example of the timing conditions for compressed air injection in the case of splicing lyocell fiber yarn. Detailed Implementation

[0038] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. Furthermore, in the description of the drawings, the same or equivalent elements are labeled with the same symbols, and repeated descriptions are omitted.

[0039] like Figure 1 As shown, the automatic winding machine 1 comprises multiple winding units 3 arranged side by side, a machine control device 5, and a doffing device 7. The machine control device 5 can communicate with the multiple winding units (take-up devices) 3. The operator of the automatic winding machine 1 can manage multiple winding units 3 simultaneously by appropriately operating the machine control device 5. Each winding unit 3 unwinds yarn Y from the feed bobbin SB and winds the yarn Y onto the take-up bobbin WB while moving laterally, thereby forming a package P. When the package P in each winding unit 3 becomes a full package (a state where a specified amount of yarn has been wound), the doffing device 7 moves to the position of that winding unit 3, unloads the full package, and installs an empty take-up bobbin WB.

[0040] like Figure 2 As shown, the winding unit 3 includes a unit control unit 10, a yarn feeding device 12, and a take-up device 14. The unit control unit 10 includes, for example, a CPU (Central Processing Unit) and a ROM (Read Only Memory). The ROM stores a program for controlling each component of the winding unit 3. The CPU executes the program stored in the ROM.

[0041] The yarn feeding device 12 supports the yarn feeding bobbin SB, which is placed on a conveyor tray (not shown), in a predetermined position. The yarn feeding device 12 unwinds the yarn Y from the yarn feeding bobbin SB and pulls the yarn Y out of the yarn feeding bobbin SB. The yarn feeding device 12 supplies the yarn Y. The yarn feeding device 12 is not limited to a conveyor tray type device; for example, it can also be a yarn magazine type device.

[0042] The take-up device 14 includes a rocker arm 16 and a take-up roller 18. The rocker arm 16 supports the take-up bobbin WB (or package P) so that it can rotate by clamping it. The take-up roller 18 rotates the package P while the yarn Y moves laterally on the surface of the package P. The take-up roller 18 is driven to rotate by a roller drive motor (not shown). With the outer periphery of the package P in contact with the take-up roller 18, the package P is driven to rotate by rotating the take-up roller 18. A spiral lateral groove is formed on the outer circumferential surface of the take-up roller 18. The yarn Y, unwound from the feed bobbin SB, moves laterally by a certain width through the lateral groove while being taken onto the surface of the package P. Thus, a package P with a certain winding width can be formed.

[0043] Each winding unit 3, located in the yarn channel between the yarn feeding device 12 and the take-up device 14, sequentially includes, from the yarn feeding device 12 side, an unwinding auxiliary device 20, a tension applying device 22, a tension detecting device 24, a splicing device 26, and a yarn monitoring device 28. A first capturing guide device 30 and a second capturing guide device 32 are arranged near the splicing device 26.

[0044] The unwinding assist device 20 assists in preventing the yarn Y unwound from the yarn feed bobbin SB from being excessively agitated by centrifugal force and in properly unwinding the yarn Y from the yarn feed bobbin SB. The tension applying device 22 applies a predetermined tension to the traveling yarn Y. In this embodiment, the tension applying device 22 is a barrier-type device with movable comb teeth arranged relative to fixed comb teeth. The tension detection device 24 detects the tension of the traveling yarn Y between the yarn feed device 12 and the take-up device 14. The splicing device 26 splices the yarn Y on the yarn feed device 12 side to the yarn take-up device 14 side when the yarn Y becomes disconnected between the yarn feed device 12 and the take-up device 14 for some reason.

[0045] The yarn monitoring device 28 monitors the state of the yarn Y traveling in the yarn path and detects the presence or absence of yarn defects based on the monitored information. Yarn defects include, for example, at least one of the following: abnormal thickness of the yarn Y, foreign matter contained in the yarn Y, or broken yarn. The first capture guide device 30 can rotate from the standby position on the yarn feeding device 12 side to the capture position on the take-up device 14 side. The first capture guide device 30 captures the yarn Y in this capture position and guides it towards the splicing device 26. The second capture guide device 32 can rotate from the standby position on the yarn feeding device 12 side to the capture position on the take-up device 14 side. The second capture guide device 32 captures the yarn Y in this capture position and guides it towards the splicing device 26.

[0046] Next, the connector device 26 described above will be explained in more detail.

[0047] Figure 3 This is a front view showing the splicing device 26. In the following description, for convenience, the side of the take-up device 14 is referred to as the downstream side, the side of the yarn feeder 12 is referred to as the upstream side, the side of the yarn Y traveling path (yarn channel) relative to the splicing device 26 is referred to as the front side, and the side opposite to it is referred to as the rear side. The direction orthogonal to the up-down direction and the front-back direction is referred to as the left-right direction. Furthermore, the yarn end of the yarn Y on the side of the yarn feeder 12 is referred to as the first yarn end, and the yarn end of the yarn Y on the side of the take-up device 14 is referred to as the second yarn end.

[0048] like Figure 3As shown, the splicing device 26 includes a front plate (support body) 90, a detwisting section 40 including a first detwisting tube component 41A and a second detwisting tube component 41B, a splicing section 50 that splices by injecting compressed air, a pair of yarn guide bars (not shown) that can rotate in a manner that clamps the detwisting section 40, a yarn pressing component 80 including a first yarn pressing bar 82 and a second yarn pressing bar 83 that can rotate in a manner that clamps the splicing section 50, a pressing bar (yarn shrinkage suppression bar) 85 that clamps the yarn Y between itself and the front plate 90 for holding, a nozzle guide 94, and a control unit 96 that controls the injection of compressed air in the splicing section 50 (see reference). Figure 6 ).

[0049] The front plate 90 is plate-shaped with its thickness along the rear-to-rear direction. The front surface 90a of the front plate 90 is planar along the yarn travel direction. A splice portion 50 is provided on the front surface 90a of the front plate 90. The front plate 90 supports the splice portion 50. On the front surface 90a of the front plate 90, an opening of the first untwisting tube component 41A, i.e., the first yarn end inlet, is provided on the downstream side of the splice portion 50, and an opening of the second untwisting tube component 41B, i.e., the second yarn end inlet, is provided on the upstream side of the splice portion 50.

[0050] On the front surface 90a of the front plate 90, a first guide portion 45A is provided downstream of the first untwisting tube component 41A, and a second guide portion 45B is provided upstream of the second untwisting tube component 41B. The first and second guide portions 45A and 45B are arranged opposite each other with a gap between them and the joint portion 50. The first and second guide portions 45A and 45B guide the yarn Y that is guided by the first and second capturing and guiding devices 30 and 32, respectively.

[0051] The first untwisting tube component 41A takes in the first yarn end and untwises it using compressed air. The second untwisting tube component 41B takes in the second yarn end and untwises it using compressed air. The splice part 50 uses compressed air to twist the first yarn end untwisted by the first untwisting tube component 41A and the second yarn end untwisted by the second untwisting tube component 41B together to form a splice. When the yarn ends are twisted together in the splice part 50, the first and second yarn ends are held by clamping members (not shown) and pulled out from the first and second untwisting tube components 41A and 41B by yarn pulling rods (not shown), and pressed near the splice part 50 by the first yarn pressing rod 82 and the second yarn pressing rod 83.

[0052] The yarn pressing component 80 is connected to a drive source (not shown), such as a stepper motor, via a cam linkage mechanism 95. The yarn pressing component 80 is configured to move towards or away from the front surface 90a of the front plate 90 by the driving force of the drive source. That is, the first yarn pressing rod 82 and the second yarn pressing rod 83 of the yarn pressing component 80 rotate (twist) by the driving force of the drive source in a manner that their front ends approach or move away from the front surface 90a of the front plate 90. The yarn pressing component 80 presses the first yarn end and the second yarn end by abutting against the front surface 90a of the front plate 90 and cooperating with the front surface 90a. The first yarn pressing rod 82 and the second yarn pressing rod 83 may also be forced towards the front end of the front plate 90 by a torsion coil spring (not shown), for example.

[0053] A pair of press-in rods 85 are arranged vertically, clamping the joint portion 50. The pair of press-in rods 85 swing together around an axis 86 extending in the vertical direction. The press-in rods 85 swing until they abut against the front surface 90a of the front plate 90, clamping the yarn Y between themselves and the front plate 90 with an appropriate holding force.

[0054] The nozzle guide 94 is a component that guides the compressed air injected into the connector 50. The nozzle guide 94 is used to control the direction of the injected compressed air and to stabilize the positions of the two yarns Y being joined. The nozzle guide 94 is plate-shaped. The nozzle guide 94 is fixed to the upper and lower sides of the connector 50 via gaskets 94S. The nozzle guide 94 is configured to block a portion of the upstream opening of the upstream connector chamber 113U (described later) and a portion of the downstream opening of the downstream connector chamber 113D (described later) in the connector 50. The upper and back surfaces of the ends of the nozzle guide 94 that block the openings of the upstream and downstream connector chambers 113U and 113D are not chamfered but have corners.

[0055] In the splicing device 26 configured as described above, firstly, the first and second yarn-pulling rods (not shown) and the first and second yarn-pressing rods 82 rotate toward the front plate 90. As a result, the downstream yarn Y and the upstream yarn Y, guided by the first and second capturing guide devices 30 and 32, are pulled closer toward the untwisting section 40. Then, these yarns Y are held by clamping members and cut by a cutter in this state. The first yarn end is fed into the interior of the first untwisting tube component 41A, and the second yarn end is fed into the interior of the second untwisting tube component 41B. At this time, the yarn Y is held between the pressing rod 85 and the front plate 90, thereby suppressing the shrinkage of the yarn Y when it is cut. Compressed air is injected into the first and second untwisting tube components 41A and 41B, and the first and second yarn ends are untwisted by the action of the compressed air.

[0056] Next, the first and second yarn guide rods (not shown) rotate further. As a result, the first and second yarn ends are pulled out from the first and second untwisting tube components 41A and 41B respectively, and pressed against the vicinity of the splice portion 50 by the first and second pressing rods 82 and 83. The pressing rod 85 is returned to its initial position, releasing its grip on the yarn Y. Compressed air is injected into the splice portion 50, and the untwisted first and second yarn ends are twisted together by the compressed air. Next, the first and second yarn guide rods (not shown) and the first and second pressing rods 82 and 83 rotate in opposite directions. Then, the clamping members release their grip on the upper and lower yarns Y. As a result, the joined yarns Y return to their travel path on the front side of the splice device 26.

[0057] Figure 4A This is a perspective view showing the front side of the connector 50. Figure 4B This is a perspective view showing the rear side of the connector 50. Figure 5 It is along the connector nozzle 100 Figure 4A A partial sectional view of AA. Figure 6 This is a diagram showing the general structure of the connector device 26. Figure 6 Including the joint nozzle 100 along Figure 5 A partial sectional view of BB. Figure 7 It is along the connector nozzle 100 Figure 6 An enlarged cross-sectional view of the CC line. The connector 50 is a part where the connector is made by injecting compressed air, and includes a connector nozzle 100 and a support block 120.

[0058] like Figure 4A , Figure 4B as well as Figure 5 As shown, the connector nozzle 100 is fixed relative to the support block 120. The connector nozzle 100 is a connector nozzle that performs connectoring by injecting compressed air. The connector nozzle 100 includes, for example, a nozzle body 110 formed of ceramic and being a block, a slit (groove) 112 extending along the yarn travel direction, i.e., the vertical direction, a space for connectoring by the action of compressed air, namely an upstream connector chamber 113U and a downstream connector chamber 113D, a first upstream injection hole HU1 and a second upstream injection hole HU2 that inject compressed air toward the upstream connector chamber 113U, and a first downstream injection hole HD1 and a second downstream injection hole HD2 that inject compressed air toward the downstream connector chamber 113D.

[0059] A V-groove 111 extending from the top to the bottom in a V-shape is formed on the front side of the nozzle body 110. A slit 112 is formed on the bottom side of the V-groove 111 in the nozzle body 110. The slit 112 extends vertically from the top to the bottom of the nozzle body 110. The bottom side (rear side) of the slit 112 communicates with the upstream connector chamber 113U and the downstream connector chamber 113D.

[0060] An upstream-side connector chamber 113U is disposed at the center of the connector nozzle 100 in the vertical direction on the upstream side and opens to the upstream side. A downstream-side connector chamber 113D is disposed at the center of the connector nozzle 100 in the vertical direction on the downstream side and opens to the downstream side. These upstream-side connector chambers 113U and downstream-side connector chambers 113D are adjacent in the vertical direction and communicate with each other at the central portion in the vertical direction of the connector nozzle 100. Viewed from the vertical direction, the upstream-side connector chambers 113U and downstream-side connector chambers 113D are offset in a manner in which their centers are separated from each other in the left-right direction (a predetermined direction).

[0061] The upstream connector chamber 113U has a planar wall 114U and a curved wall 115U on a portion of its inner wall. Viewed vertically, the planar wall 114U is positioned closer to the slit 112 than the center of the upstream connector chamber 113U. Viewed vertically, the planar wall 114U is a straight line that slopes rearward relative to the left-right direction as it moves inward towards the left-right direction. The curved wall 115U is arc-shaped when viewed vertically. The curved wall 115U forms the wall surface of the upstream connector chamber 113U, excluding the planar wall 114U. The upstream connector chamber 113U, defined by the planar wall 114U and the curved wall 115U, has a partially cut-off circular shape when viewed vertically, with a portion of the front and left-right sides inward.

[0062] The downstream connector chamber 113D has a planar wall 114D and a curved wall 115D on a portion of its inner wall. Viewed vertically, the planar wall 114D is positioned closer to the slit 112 than the center of the downstream connector chamber 113D. Viewed vertically, the planar wall 114D is a straight line that slopes rearward relative to the left-right direction as it moves inward towards the left-right direction. The curved wall 115D is arc-shaped when viewed vertically. The curved wall 115D forms the wall surface of the downstream connector chamber 113D, excluding the planar wall 114D. The downstream connector chamber 113D, defined by the planar wall 114D and the curved wall 115D, has a partially cut-off circular shape when viewed vertically, with a portion of the front and left-right sides removed.

[0063] like Figure 5 , Figure 6 as well as Figure 7As shown, the nozzle body 110 has a first passage 140U1 and a second passage 140U2 for supplying compressed air to the upstream junction chamber 113U. The first passage 140U1 is a through hole leading to the upstream junction chamber 113U. The first passage 140U1 extends in the left-right direction. The second passage 140U2 is a through hole leading to the bottom side of the slit 112. The second passage 140U2 extends obliquely relative to the left-right direction. The first passage 140U1 and the second passage 140U2 are arranged vertically in the front view and are located on one side of the left-right direction relative to the yarn travel path L. The first passage 140U1 is located upstream of the second passage 140U2 in the front view. The openings of the first passage 140U1 and the second passage 140U2 constitute the first upstream injection hole HU1 and the second upstream injection hole HU2. The cross-sectional shape of the first passage 140U1 and the second passage 140U2 is rectangular. In other words, compressed air flows out, passes through, exits, or is supplied to the upstream connector chamber 113U via the first upstream injection port HU1 and the second upstream injection port HU2.

[0064] Furthermore, the nozzle body 110 has a first passage 140D1 and a second passage 140D2 for supplying compressed air to the downstream junction chamber 113D. The first passage 140D1 is a through-hole leading to the downstream junction chamber 113D. The first passage 140D1 extends in the left-right direction. The second passage 140D2 is a through-hole leading to the bottom side of the slit 112. The second passage 140D2 extends obliquely relative to the left-right direction. Viewed from the front, the first passage 140D1 and the second passage 140D2 are arranged vertically and are located on the opposite side of the left-right direction relative to the yarn travel path L. Viewed from the front, the first passage 140D1 is located downstream of the second passage 140D2. The openings of the first passage 140D1 and the second passage 140D2 constitute the first downstream injection hole HD1 and the second downstream injection hole HD2. The cross-sectional shape of the first passage 140D1 and the second passage 140D2 is rectangular. In other words, compressed air flows out, passes through, exits, or is supplied to the downstream connector chamber 113D via the first downstream injection port HD1 and the second downstream injection port HD2.

[0065] The first upstream injection hole HU1 and the second upstream injection hole HU2 are formed in the nozzle body 110 and are injection holes for injecting compressed air toward the upstream junction chamber 113U. The first upstream injection hole HU1 and the second upstream injection hole HU2 inject compressed air in the direction in which the twist of the second yarn end is applied. When viewed from the front, the first upstream injection hole HU1 and the second upstream injection hole HU2 are located on one side in the left-right direction relative to the yarn travel path L. The first upstream injection hole HU1 and the second upstream injection hole HU2 are rectangular in shape.

[0066] The first upstream injection port HU1 injects compressed air along the planar wall 114U of the upstream connector chamber 113U. The first upstream injection port HU1 opens into the upstream connector chamber 113U. Viewed vertically, the planar wall 114U of the upstream connector chamber 113U is inclined at 15° to 30° relative to the injection direction of the compressed air from the first upstream injection port HU1. Specifically, viewed vertically, the planar wall 114U is inclined at 20° to 25° relative to the injection direction of the compressed air from the first upstream injection port HU1. In the illustrated example, the angle α between the planar wall 114U and the injection direction of the compressed air from the first upstream injection port HU1 is 25°. The planar wall 114U is connected to the edge of the first upstream injection port HU1. As described above, compressed air is injected along the planar wall 114U, and the extending direction of the planar wall 114U includes not only parallel to the injection direction but also inclined directions.

[0067] Furthermore, for example, the injection direction of compressed air from the first upstream injection port HU1 corresponds to the direction in which the first upstream injection port HU1 faces. For example, the injection direction of compressed air from the first upstream injection port HU1 is the main direction of the streamline of compressed air through the first upstream injection port HU1. This is the same in the second upstream injection port HU2, the first downstream injection port HD1, and the second downstream injection port HD2.

[0068] The second upstream injection port HU2 is located on the bottom side of the slit 112. The second upstream injection port HU2 opens on the bottom side of the slit 112. Viewed from above, the second upstream injection port HU2 injects compressed air along the tangential direction of the curved wall 115U of the upstream connector chamber 113U. The second upstream injection port HU2 injects compressed air from the bottom side of the slit 112 toward the edge of the upstream connector chamber 113U.

[0069] The first downstream injection hole HD1 and the second downstream injection hole HD2 are formed in the nozzle body 110 and are injection holes for injecting compressed air toward the downstream junction chamber 113D. The first downstream injection hole HD1 and the second downstream injection hole HD2 inject compressed air in the direction in which the twist of the first yarn end is applied. When viewed from the front, the first downstream injection hole HD1 and the second downstream injection hole HD2 are located on the opposite side in the left-right direction relative to the yarn travel path L. The first downstream injection hole HD1 and the second downstream injection hole HD2 are rectangular in shape.

[0070] The first downstream injection port HD1 injects compressed air along the planar wall 114D of the downstream connector chamber 113D. The first downstream injection port HD1 opens into the downstream connector chamber 113D. Viewed vertically, the planar wall 114D of the downstream connector chamber 113D is inclined at 15° to 30° relative to the injection direction of the compressed air from the first downstream injection port HD1. Specifically, viewed vertically, the planar wall 114D is inclined at 20° to 25° relative to the injection direction of the compressed air from the first downstream injection port HD1. In the illustrated example, the angle β between the planar wall 114D and the injection direction of the compressed air from the first downstream injection port HD1 is 25°. The planar wall 114D is connected to the edge of the first downstream injection port HD1. As described above, compressed air is injected along the planar wall 114D, and the extending direction of the planar wall 114D includes not only parallel to the injection direction but also inclined directions.

[0071] The second downstream injection port HD2 is located on the bottom side of the slit 112. The second downstream injection port HD2 opens on the bottom side of the slit 112. Viewed from above, the second downstream injection port HD2 injects compressed air in the tangential direction to the curved wall 115D of the downstream connector chamber 113D. The second downstream injection port HD2 injects compressed air from the bottom side of the slit 112 toward the edge of the downstream connector chamber 113D.

[0072] The compressed air is injected in the left-right direction by the first upstream injection port HU1 and the first downstream injection port HD1, respectively, but in opposite directions. In the vertical direction, the second upstream injection port HU2 and the second downstream injection port HD2 are located between the first upstream injection port HU1 and the first downstream injection port HD1 (see reference). Figure 6 In other words, in the vertical direction, a first upstream injection hole HU1 and a first downstream injection hole HD1 are arranged on the outer side of the nozzle body 110, and a second upstream injection hole HU2 and a second downstream injection hole HD2 are arranged on the inner side of the nozzle body 110.

[0073] The boundary line formed between the planar wall 114U and the other wall surface (curved wall 115U) in the inner wall of the upstream connector chamber 113U is connected to at least a portion of the edge of the first upstream injection hole HU1. The boundary line formed between the planar wall 114D and the other wall surface (curved wall 115D) in the inner wall of the downstream connector chamber 113D is connected to at least a portion of the edge of the first downstream injection hole HD1. The boundary line of the inner wall of the upstream connector chamber 113U constitutes the corner (corner) formed at the junction of the planar wall 114U and the curved wall 115U. The boundary line of the inner wall of the downstream connector chamber 113D constitutes the corner (corner) formed at the junction of the planar wall 114D and the curved wall 115D. The boundary line of the inner wall of the upstream connector chamber 113U overlaps with one side of the polygonal shape of the first upstream injection hole HU1. The boundary line of the inner wall of the downstream connector chamber 113D overlaps with one side of the polygonal shape of the first downstream injection hole HD1. The inner surface of the first upstream injection hole HU1 is continuous with the planar wall 114U of the upstream connector chamber 113U. The inner surface of the first downstream injection hole HD1 is continuous with the planar wall 114D of the downstream connector chamber 113D. Furthermore, the boundary line can be an actual line or an imaginary line.

[0074] Return to Figure 3 As shown in Figure 4, the support block 120 is formed of a metal such as aluminum or resin, and has a generally rectangular shape. A U-shaped opening 121 for receiving the connector nozzle 100 is formed in the support block 120. A first passage 125A and a second passage 125B are formed in the support block 120. The first passage 125A is a first passage 140U1 and a first passage 140D1 (refer to Figure 4) that allows compressed air to flow from the outside of the support block 120 to the connector nozzle 100. Figure 6 The second passage 125B is the passage for compressed air to flow from the outside of the support block 120 to the connector nozzle 100. The second passages 140U2 and 140D2 (see reference) are also passages for compressed air to flow from the outside of the support block 120 to the connector nozzle 100. Figure 6 ) Distribution channels.

[0075] like Figure 6 As shown, the control unit 96 is a computer composed of a CPU, ROM, RAM, etc. For example, various actions in the control unit 96 are controlled by loading a program stored in ROM into RAM and executing it through the CPU. The control unit 96 can also be configured as hardware based on circuits, etc. The control unit 96 can consist of a unit control unit 10 (see reference 10). Figure 2 It is part of the control unit 96. The control unit 96 can also be configured separately from the unit control unit 10.

[0076] The control unit 96 controls the injection of compressed air into the connector nozzle 100. Specifically, the control unit 96 controls the opening and closing of the first solenoid valve 161, which is provided in the first air flow path 151 that guides compressed air to the first upstream injection port HU1 and the first downstream injection port HD1. The first air flow path 151 is formed, for example, by a pipe, and is connected to the first passage 125A. The control unit 96 controls the opening and closing of the second solenoid valve 162, which is provided in the second air flow path 152 that guides compressed air to the second upstream injection port HU2 and the second downstream injection port HD2. The second air flow path 152 is formed, for example, by a pipe, and is connected to the second passage 125B. The control unit 96 controls the opening and closing of at least one of the first solenoid valve 161 and the second solenoid valve 162, thereby enabling the modification of the injection start timing and injection stop timing of compressed air injected from the first upstream injection port HU1, the second upstream injection port HU2, the first downstream injection port HD1, and the second downstream injection port HD2.

[0077] A first pressure regulating valve 171 is provided in the first airflow path 151 to adjust the injection pressure from the first upstream injection port HU1 and the first downstream injection port HD1. A second pressure regulating valve 172 is provided in the second airflow path 152 to adjust the injection pressure from the second upstream injection port HU2 and the second downstream injection port HD2. That is, the connector device 26 includes the first pressure regulating valve 171 and the second pressure regulating valve 172 as pressure regulating parts.

[0078] In the above, in the connector nozzle 100, the first upstream side injection hole HU1 injects compressed air along the planar wall 114U of the upstream side connector chamber 113U. For example... Figure 8 As shown, the two yarns Y, Y forming the seam flow along the planar wall 114U in a prepared state due to the flow of compressed air in the upstream junction chamber 113U, colliding and rebounding, approaching the first upstream jet hole HU1. The two yarns Y, Y approaching the first upstream jet hole HU1 again flow along the planar wall 114U, colliding and rebounding, repeating the above actions. Thus, the fibers of the two yarns Y, Y intertwine to form a seam. The seam is formed by the intertwining of the yarns Y within the upstream junction chamber 113U. Although the compressed air from the first upstream jet hole HU1 also has elements of winding at the outer edge of the upstream junction chamber 113U, it mainly has elements of winding within the upstream junction chamber 113U, which contributes to the seam strength. The same applies to the first downstream jet hole HD1. In one aspect of the invention, the seam strength is the maximum tensile strength measured until the yarn breaks in the yarn tensile strength test described later.

[0079] Therefore, according to the splicing nozzle 100, two yarns Y, Y can be effectively wound together to form a seam. As a result, even when splicing various yarns Y, the seam strength is sufficient. It can handle various types of yarns Y. Any type of yarn can be handled by one type of splicing nozzle 100. The shape of the seam can also be a beautiful shape with no sharp warp at both ends. There is no need to change the stiffness of the yarn Y by heating or adding water during splicing to modify it to a yarn quality suitable for splicing.

[0080] In the joint nozzle 100, viewed vertically, the planar wall 114U of the upstream joint chamber 113U is inclined at 15° to 30° relative to the injection direction of the compressed air from the first upstream injection hole HU1. Similarly, viewed vertically, the planar wall 114D of the downstream joint chamber 113D is inclined at 15° to 30° relative to the injection direction of the compressed air from the first downstream injection hole HD1. In this configuration, by injecting compressed air from both the first upstream injection hole HU1 and the first downstream injection hole HD1, the two yarns Y and Y can be wound more effectively to form a seam.

[0081] Furthermore, if the direction of compressed air injection from the planar wall 114U relative to the first upstream injection hole HU1 is less than 15°, the proportion of air flowing outward from the slit 112 increases, and yarns Y and Y may fly outward from the slit 112. If the direction of compressed air injection from the planar wall 114U relative to the first upstream injection hole HU1 is greater than 30°, the volume of the upstream junction chamber 113U decreases, and the air may not be able to circulate sufficiently. The same applies to the planar wall 114D.

[0082] In the joint nozzle 100, viewed vertically, the planar wall 114U of the upstream joint chamber 113U is inclined at 20° to 25° relative to the injection direction of the compressed air from the first upstream injection hole HU1. Similarly, viewed vertically, the planar wall 114D of the downstream joint chamber 113D is inclined at 20° to 25° relative to the injection direction of the compressed air from the first downstream injection hole HD1. In this configuration, by injecting compressed air from both the first upstream injection hole HU1 and the first downstream injection hole HD1, the two yarns Y and Y can be wound more effectively to form a seam.

[0083] In the connector nozzle 100, the boundary line formed between the planar wall 114U in the inner wall of the upstream connector chamber 113U and the other wall surface (curved wall 115U) is configured to connect with at least a portion of the edge of the first upstream injection hole HU1. Similarly, the boundary line formed between the planar wall 114D in the inner wall of the downstream connector chamber 113D and the other wall surface (curved wall 115D) is configured to connect with at least a portion of the edge of the first downstream injection hole HD1. This configuration specifically achieves the aforementioned effect of handling various types of yarn Y. Furthermore, the air injected from the first upstream injection hole HU1 and the first downstream injection hole HD1 flows continuously along the planar walls 114U and 114D, thus preventing airflow turbulence and ensuring that the effect on the yarn Y is not disrupted.

[0084] In the connector nozzle 100, the first upstream injection hole HU1 and the first downstream injection hole HD1 are polygonal in shape. The boundary line of the inner wall of the upstream connector chamber 113U is configured to overlap with one side of the polygonal shape of the first upstream injection hole HU1, and the boundary line of the inner wall of the downstream connector chamber 113D is configured to overlap with one side of the polygonal shape of the first downstream injection hole HD1. With this configuration, a method can be specifically achieved that can handle various yarns Y.

[0085] Alternatively, in the connector nozzle 100, the first upstream injection hole HU1 and the first downstream injection hole HD1 may be circular, with the boundary line of the inner wall of the upstream connector chamber 113U overlapping the tangent of the circular shape of the first upstream injection hole HU1, and the boundary line of the inner wall of the downstream connector chamber 113D overlapping the tangent of the circular shape of the first downstream injection hole HD1. This configuration can specifically achieve the aforementioned effect of handling various yarns Y.

[0086] In the connector nozzle 100, the inner surface of the first upstream injection hole HU1 is configured to be connected to the planar wall 114U of the upstream connector chamber 113U, and the inner surface of the first downstream injection hole HD1 is configured to be connected to the planar wall 114D of the downstream connector chamber 113D. With this configuration, a method can be specifically achieved to achieve the above-mentioned effect of being able to handle various yarns Y.

[0087] In the connector nozzle 100, viewed from the vertical direction, the upstream connector chamber 113U and the downstream connector chamber 113D are offset in a manner where their centers are separated from each other in the left-right direction. Viewed from the vertical direction, the compressed air injection directions of the first upstream injection hole HU1 and the first downstream injection hole HD1 are along the left-right direction and in opposite directions. Therefore, when viewed from the vertical direction, the first upstream injection hole HU1 and the first downstream injection hole HD1 can be symmetrically configured in the left-right direction. Furthermore, when the upstream connector chamber 113U and the downstream connector chamber 113D are circular when viewed from the vertical direction, as in this embodiment, the center is the center of the circle. Additionally, for example, when the upstream connector chamber 113U and the downstream connector chamber 113D are elongated (elliptical, oblong, etc.) when viewed from the vertical direction, the center may be the intersection of the major and minor axes. Furthermore, for example, when the upstream connector chamber 113U and the downstream connector chamber 113D are rotationally symmetrical when viewed from the vertical direction, the center may be their center of rotation.

[0088] In the connector nozzle 100, the upstream connector chamber 113U has a curved wall 115U, and the downstream connector chamber 113D has a curved wall 115D. Viewed from above, the second upstream injection port HU2 injects compressed air along the tangential direction of the curved wall 115U (see reference). Figure 9 Viewed from above, the second downstream jet hole HD2 injects compressed air along the tangential direction of the curved wall 115D. In this case, the compressed air injected tangentially from the second upstream jet hole HU2 and the second downstream jet hole HD2 primarily transmits rotational force to the yarn Y, effectively winding the fibers at the first and second yarn ends. Although the compressed air from the second upstream jet hole HU2 and the second downstream jet hole HD2 also has the element of winding formed by the upstream splicing chamber 113U and the downstream splicing chamber 113D, it primarily has the element of winding the fibers at the outer edges of the upstream splicing chamber 113U and the downstream splicing chamber 113D, which contributes to the formation of the seam. Thus, even when splicing various yarns Y, the strength of the seam is sufficient.

[0089] In the connector nozzle 100, a slit 112 is formed that communicates with the upstream connector chamber 113U and the downstream connector chamber 113D. The second upstream injection hole HU2 and the second downstream injection hole HD2 open at the bottom side of the slit 112. In this configuration with the slit 112, by injecting compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2, it is possible to prevent the yarn Y from coming out of the upstream connector chamber 113U and the downstream connector chamber 113D through the slit 112.

[0090] In the splice nozzle 100, viewed from above, the planar wall 114U is positioned closer to the slit 112 than the center of the upstream splice chamber 113U, and the planar wall 114D is positioned closer to the slit 112 than the center of the downstream splice chamber 113D. This configuration specifically achieves the aforementioned effect of handling various yarns Y.

[0091] In the connector nozzle 100, in the vertical direction, the second upstream side injection hole HU2 and the second downstream side injection hole HD2 are located between the first upstream side injection hole HU1 and the first downstream side injection hole HD1. In this case, compared with the case where the first upstream side injection hole HU1 and the first downstream side injection hole HD1 are located between the second upstream side injection hole HU2 and the second downstream side injection hole HD2 in the vertical direction, it is possible to suppress the yarn Y from coming out of the upstream side connector chamber 113U and the downstream side connector chamber 113D.

[0092] The winding unit 3 includes a splicing nozzle 100, a front plate 90 supporting the splicing nozzle 100, and a control unit 96 for controlling the injection of compressed air into the splicing nozzle 100. In the splicing device 26, the splicing nozzle 100 also achieves the aforementioned effect, namely, it can handle various yarns such as Y.

[0093] The winding unit 3 includes a first upstream injection port HU1, a second upstream injection port HU2, and a first pressure regulating valve 171 and a second pressure regulating valve 172 for adjusting the injection pressure of the first downstream injection port HD1 and the second downstream injection port HD2. Thus, for example, when yarn Y is worsted cotton yarn, by controlling the first pressure regulating valve 171 and the second pressure regulating valve 172 to make the injection pressure of compressed air from the first upstream injection port HU1 and the first downstream injection port HD1 greater than the injection pressure of compressed air from the second upstream injection port HU2 and the second downstream injection port HD2, the winding of the two yarns Y, Y' at the joint can be strengthened, resulting in a seam strength corresponding to that of worsted yarn. That is, a seam strength corresponding to the type of yarn Y can be obtained.

[0094] In the connector device 26, the control unit 96 controls the opening and closing of the first solenoid valve 161 provided in the first air flow path 151 and the second solenoid valve 162 provided in the second air flow path 152. In this case, the timing of compressed air injection can be controlled by using the first solenoid valve 161 and the second solenoid valve 162.

[0095] Figure 10A , Figure 10B , Figure 11A , Figure 11B , Figure 12A as well as Figure 12BThis is a diagram illustrating an example of the timing conditions for compressed air injection in the winding unit 3. The times in each diagram represent the time elapsed as the direction of the arrow is traveled. In each diagram, the presence of the "untwisting section" bar indicates that compressed air is injected into the untwisting section 40. The presence of the "first injection hole" bar indicates that compressed air is injected from the first upstream injection hole HU1 and the first downstream injection hole HD1. The presence of the "second injection hole" bar indicates that compressed air is injected from the second upstream injection hole HU2 and the second downstream injection hole HD2. In the winding unit 3, compressed air may also be injected into the untwisting section 40 and the splicing section 50 based, for example, on injection timing conditions corresponding to the type of yarn Y.

[0096] For example, the winding unit 3 has a control mode for splicing yarn Y, which is a worsted cotton yarn (the first type of yarn). It was found that in the control mode for splicing yarn Y, which is a worsted cotton yarn, it is possible to... Figure 10A The control unit 96 of the winding unit 3 is configured to execute the following control mode: After the compressed air injection in the untwisting unit 40 is stopped in the winding unit 3, compressed air is started to be injected from the first upstream injection hole HU1 and the first downstream injection hole HD1 under the control of the control unit 96. Alternatively, the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 can be delayed under the control of the control unit 96, and then the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 can be stopped simultaneously with the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2. In this case, cotton worsted yarn can be spun. The injection pressure of the compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 can also be the same as the injection pressure of the compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 (e.g., injection pressure: 0.5 MPa).

[0097] For in Figure 10A The tensile strength and elongation of the spliced ​​cotton worsted yarn under the shown jet timing conditions were tested. The results confirmed that a holding force (%) of 80% to 90% is sufficient to ensure sufficient seam strength. Furthermore, a seam with a nice shape was obtained. The holding force (%) is the ratio of the strength of the spliced ​​yarn Y to the strength of the unspliced ​​yarn Y. The results of the tensile strength and elongation tests here are the average value of 30 tests. General testing conditions can be used for other tensile strength and elongation tests. These are the same in the following tensile strength and elongation tests.

[0098] Furthermore, for example, the winding unit 3 has a control mode for splicing yarn Y, which is polyester yarn (the second type of yarn). It has been found that in the control mode for splicing yarn Y, which is polyester yarn, it is possible to... Figure 10B The control unit 96 of the winding unit 3 is configured to execute the following control mode: After the compressed air injection in the untwisting unit 40 is stopped in the winding unit 3, compressed air is started to be injected from the first upstream injection hole HU1 and the first downstream injection hole HD1 under the control of the control unit 96. Alternatively, compressed air injection can be delayed from the second upstream injection hole HU2 and the second downstream injection hole HD2 under the control of the control unit 96, and then the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 and the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 can be stopped simultaneously. Figure 10B The injection period of compressed air from the first upstream injection port HU1 and the first downstream injection port HD1 is shown to be longer than that of compressed air from the first upstream injection port HU1 and the first downstream injection port HD1. Figure 10A The spraying period shown is long. Figure 10B The injection period of compressed air from the second upstream injection port HU2 and the second downstream injection port HD2 is shown to be longer than that of compressed air from the second upstream injection port HU2 and the second downstream injection port HD2. Figure 10A The spraying period shown is long. In this case, it is possible to handle polyester yarn. The spraying pressure of the compressed air in the first upstream spray hole HU1 and the first downstream spray hole HD1 can also be the same as the spraying pressure of the compressed air in the second upstream spray hole HU2 and the second downstream spray hole HD2 (e.g., spraying pressure: 0.4 MPa).

[0099] For Figure 10B The polyester yarn at the joint was subjected to a strength and elongation test under the spray timing conditions shown. The results confirmed that the holding force (%) was 80% to 90%, which is sufficient to ensure the strength of the joint. In addition, it was confirmed that a nice-shaped joint was obtained.

[0100] Furthermore, for example, the winding unit 3 has a control mode for splicing yarn Y, which is acrylic yarn (the third type of yarn). It was found that in the control mode for splicing yarn Y, which is acrylic yarn, it is possible to... Figure 11AThe control unit 96 of the winding unit 3 is configured to execute the following control mode: That is, in the winding unit 3, after the injection of compressed air in the untwisting section 40 is stopped, compressed air is started to be injected from the first upstream injection hole HU1 and the first downstream injection hole HD1 under the control of the control unit 96. Alternatively, compressed air injection from the second upstream injection hole HU2 and the second downstream injection hole HD2 can be delayed under the control of the control unit 96. Then, under the control of the control unit 96, during the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2, the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 is stopped, and the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 is restarted. Then, the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 can be stopped by the control unit 96, and then the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 can be stopped with a delay. In this case, acrylic yarn can be handled. The injection pressure of the compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 can also be the same as the injection pressure of the compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 (for example, injection pressure: 0.4 MPa).

[0101] For Figure 11A The tensile strength of the acrylic yarn at the joint was tested under the spray timing conditions shown. The results confirmed that the holding force (%) was 80% to 90%, which is sufficient to ensure the strength of the joint. In addition, it was confirmed that a nice-shaped joint was obtained.

[0102] Furthermore, for example, the winding unit 3 has a control mode for splicing yarn Y, which is a combed yarn (the fourth type of yarn). It has been found that in the control mode for splicing yarn Y, which is a combed yarn, it is possible to... Figure 11BThe control unit 96 of the winding unit 3 is configured to execute the following control mode: In the winding unit 3, after the injection of compressed air in the untwisting section 40 is stopped, compressed air is started to be injected from the second upstream injection hole HU2 and the second downstream injection hole HD2 under the control of the control unit 96. Under the control of the control unit 96, the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 is then delayed. Next, under the control of the control unit 96, during the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1, the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 is stopped, and the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 is restarted. Then, the control unit 96 can also stop the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1, and then delay stopping the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2. In this case, combed yarn can be handled. The injection pressure of the compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 can also be the same as the injection pressure of the compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 (for example, injection pressure: 0.65 MPa).

[0103] For Figure 11B The strength and elongation of the combed yarn at the joint were tested under the indicated jet timing conditions. The results confirmed that the holding force (%) was 85% to 95%, which is sufficient to ensure the strength of the joint. In addition, it was confirmed that a good-looking joint shape was obtained.

[0104] Furthermore, for example, the winding unit 3 has a control mode for splicing yarn Y, which is a core-spun yarn (the fifth type of yarn). It was found that in the control mode for splicing yarn Y, which is a core-spun yarn, it is possible to... Figure 12AThe control unit 96 of the winding unit 3 is configured to execute the following control mode: In the winding unit 3, after the compressed air injection in the untwisting section 40 is stopped, while the yarn Y is held by the pressing rod 85, the control unit 96 controls the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1, and then stops the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1. Alternatively, while the pressing rod 85 is released, the control unit 96 controls the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1, then delays the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2, and then simultaneously stops the injection of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 and the injection of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2. In this case, it is possible to handle core-spun yarn. The injection pressure of compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 can also be the same as the injection pressure of compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2 (e.g., injection pressure: 0.6 MPa).

[0105] For Figure 12A The core-spun yarn of the joint was subjected to a strength and elongation test under the spray timing conditions shown. The results confirmed that the holding force (%) was 80% to 90%, which is sufficient to ensure the strength of the joint. In addition, it was confirmed that a good-looking joint shape was obtained.

[0106] Furthermore, for example, the winding unit 3 has a control mode for splicing yarn Y, which is a lyocell fiber yarn (the sixth type of yarn). It was found that in the control mode for splicing yarn Y, which is a lyocell fiber yarn, it is possible to... Figure 12BThe control unit 96 of the winding unit 3 is configured to execute the following control mode: In the winding unit 3, after the compressed air injection in the untwisting section 40 is stopped, compressed air is started and stopped from being injected from the first upstream injection hole HU1 and the first downstream injection hole HD1 under the control of the control unit 96. Subsequently, compressed air can also be started and stopped from being injected from the second upstream injection hole HU2 and the second downstream injection hole HD2 under the control of the control unit 96. In this case, lyocell fiber yarn can be handled. The injection pressure of the compressed air from the first upstream injection hole HU1 and the first downstream injection hole HD1 can also be the same as the injection pressure of the compressed air from the second upstream injection hole HU2 and the second downstream injection hole HD2.

[0107] For Figure 12B Tensile strength tests were conducted on the Lyocell fiber yarn at the joint under the indicated spray timing conditions. The results showed that a holding force (%) of 80% to 90% ensured sufficient joint strength. Furthermore, a well-shaped joint was achieved.

[0108] [Variation Example]

[0109] The above describes the implementation methods, but one aspect of the present invention is not limited to the above-described implementation methods.

[0110] In the above embodiment, the left-right orientations of the upstream connector chamber 113U and the downstream connector chamber 113D can also be reversed. That is, instead of arranging the upstream connector chamber 113U to one side and the downstream connector chamber 113D to the other side in the left-right direction, the upstream connector chamber 113U to the other side and the downstream connector chamber 113D to one side in the left-right direction can also be arranged. This variation is used when the twisting direction in the connector in the above embodiment is reversed. In addition, in this variation, the nozzle guide 94 is fixed to the opposite side of the left-right direction of the yarn travel path L in the connector portion 50, which is reversed compared to the above embodiment. The nozzle guide 94 can be used regardless of the left-right positional relationship between the upstream connector chamber 113U and the downstream connector chamber 113D.

[0111] In the above embodiments, the injection start timing of each of the first upstream injection hole HU1, the second upstream injection hole HU2, the first downstream injection hole HD1, and the second downstream injection hole HD2 can be freely set. The blowing time of the compressed air from the first upstream injection hole HU1, the second upstream injection hole HU2, the first downstream injection hole HD1, and the second downstream injection hole HD2 can also be freely set. The injection pressure of the compressed air from the first upstream injection hole HU1, the second upstream injection hole HU2, the first downstream injection hole HD1, and the second downstream injection hole HD2 can also be freely set. The stop timing of the compressed air injected into the untwisting section 40 can also be freely set. Such a configuration can be achieved, for example, by using known techniques such as solenoid valves or pressure reducing valves.

[0112] In the above embodiments, the splicing device of one aspect of the present invention is applied to the winding unit 3, but the splicing device of one aspect of the present invention can also be applied to the take-up unit of a spinning machine or a work trolley that moves between multiple take-up units.

[0113] In the above embodiment, the nozzle body 110 is formed of ceramic, but it is not limited to this. For example, the nozzle body 110 can also be formed of metal. Furthermore, when the nozzle body 110 is formed of metal, powder injection molding (metal injection molding) can also be used. Since it is metal, there is no concern about cracking like ceramic, and therefore, it is not necessary to process it into complex shapes through machining. As the metal material when using powder injection molding, iron or stainless steel can be used.

Claims

1. A connector nozzle for connector assembly via compressed air injection, comprising: Nozzle body; The upstream connector chamber is formed in the nozzle body and has a planar wall on a portion of its inner wall. The downstream connector chamber is formed in the nozzle body and communicates with the upstream connector chamber. A portion of its inner wall has a planar wall. The first upstream injection hole and the second upstream injection hole are formed in the nozzle body and inject compressed air toward the upstream connector chamber; and The first downstream injection hole and the second downstream injection hole are formed in the nozzle body and inject compressed air toward the downstream connector chamber. The aforementioned first upstream injection hole injects compressed air along the aforementioned planar wall of the aforementioned upstream connector chamber. The aforementioned first downstream injection hole injects compressed air along the aforementioned planar wall of the aforementioned downstream connector chamber; The boundary line formed between the planar wall in the inner wall of the upstream connector chamber and other wall surfaces is configured to connect with at least a portion of the edge of the first upstream injection hole. The boundary line formed between the planar wall in the inner wall of the downstream connector chamber and other wall surfaces is configured to connect with at least a portion of the edge of the first downstream injection hole.

2. The connector nozzle according to claim 1, wherein, Viewed from the yarn travel direction, the planar wall of the upstream junction chamber is inclined at 15° to 30° relative to the injection direction of the compressed air from the first upstream injection hole. Viewed from the yarn travel direction, the planar wall of the downstream junction chamber is inclined at 15° to 30° relative to the direction of compressed air injection from the first downstream injection hole.

3. The connector nozzle according to claim 2, wherein, Viewed from the yarn travel direction, the planar wall of the upstream junction chamber is inclined at 20° to 25° relative to the direction of compressed air injection from the first upstream injection hole. Viewed from the yarn travel direction, the planar wall of the downstream junction chamber is inclined at 20° to 25° relative to the direction of compressed air injection from the first downstream injection hole.

4. The connector nozzle according to claim 1, wherein, The aforementioned first upstream injection hole is circular in shape. The aforementioned first downstream injection hole is circular in shape. The boundary line of the inner wall of the upstream connector chamber is configured to overlap with the tangent of the circular shape of the first upstream injection hole. The boundary line of the inner wall of the downstream connector chamber is configured to overlap with the tangent of the circular shape of the first downstream injection hole.

5. The connector nozzle according to claim 2, wherein, The aforementioned first upstream injection hole is circular in shape. The aforementioned first downstream injection hole is circular in shape. The boundary line of the inner wall of the upstream connector chamber is configured to overlap with the tangent of the circular shape of the first upstream injection hole. The boundary line of the inner wall of the downstream connector chamber is configured to overlap with the tangent of the circular shape of the first downstream injection hole.

6. The connector nozzle according to claim 3, wherein, The aforementioned first upstream injection hole is circular in shape. The aforementioned first downstream injection hole is circular in shape. The boundary line of the inner wall of the upstream connector chamber is configured to overlap with the tangent of the circular shape of the first upstream injection hole. The boundary line of the inner wall of the downstream connector chamber is configured to overlap with the tangent of the circular shape of the first downstream injection hole.

7. The connector nozzle according to claim 1, wherein, The aforementioned first upstream injection hole and the aforementioned first downstream injection hole are polygonal in shape. The boundary line of the inner wall of the upstream connector chamber is configured to overlap with one side of the polygonal shape of the first upstream injection hole. The boundary line of the inner wall of the downstream connector chamber is configured to overlap with one side of the polygonal shape of the first downstream injection hole.

8. The connector nozzle according to claim 2, wherein, The aforementioned first upstream injection hole and the aforementioned first downstream injection hole are polygonal in shape. The boundary line of the inner wall of the upstream connector chamber is configured to overlap with one side of the polygonal shape of the first upstream injection hole. The boundary line of the inner wall of the downstream connector chamber is configured to overlap with one side of the polygonal shape of the first downstream injection hole.

9. The connector nozzle according to claim 3, wherein, The aforementioned first upstream injection hole and the aforementioned first downstream injection hole are polygonal in shape. The boundary line of the inner wall of the upstream connector chamber is configured to overlap with one side of the polygonal shape of the first upstream injection hole. The boundary line of the inner wall of the downstream connector chamber is configured to overlap with one side of the polygonal shape of the first downstream injection hole.

10. The connector nozzle according to any one of claims 1 to 9, wherein, The inner surface of the first upstream injection hole is configured to connect with the planar wall of the upstream connector chamber. The inner surface of the first downstream injection hole is configured to be connected to the planar wall of the downstream connector chamber.

11. The connector nozzle according to any one of claims 1 to 9, wherein, Viewed from the aforementioned yarn travel direction, the aforementioned upstream splicing chamber and the aforementioned downstream splicing chamber are offset from each other in a manner where their centers are separated in a specified direction. Viewed from the yarn travel direction, the compressed air injection directions of the first upstream injection hole and the first downstream injection hole are along the specified direction and are in opposite directions to each other.

12. The connector nozzle according to any one of claims 1 to 9, wherein, The upstream and downstream splicing chambers mentioned above each have a portion of their inner walls with curved surfaces that appear arc-shaped when viewed from the yarn travel direction. Viewed from the yarn travel direction, the second upstream injection hole injects compressed air along the tangential direction of the curved wall of the upstream junction chamber. When viewed from the yarn travel direction, the second downstream injection hole injects compressed air along the tangential direction of the curved wall of the downstream junction chamber.

13. The connector nozzle according to any one of claims 1 to 9, wherein, The aforementioned connector nozzle has a groove portion disposed on the nozzle body, extending along the yarn travel direction, and its bottom side communicates with the upstream connector chamber and the downstream connector chamber. The aforementioned second upstream injection hole and the aforementioned second downstream injection hole open on the bottom side of the aforementioned groove. Viewed from the yarn travel direction, the planar wall of the upstream splicing chamber is positioned closer to the groove side than the center of the upstream splicing chamber. Viewed from the yarn travel direction, the planar wall of the downstream splicing chamber is positioned closer to the groove side than the center of the downstream splicing chamber.

14. The connector nozzle according to claim 12, wherein, In the aforementioned yarn travel direction, the second upstream injection hole and the second downstream injection hole are located between the first upstream injection hole and the first downstream injection hole.

15. The connector nozzle according to claim 13, wherein, In the aforementioned yarn travel direction, the second upstream injection hole and the second downstream injection hole are located between the first upstream injection hole and the first downstream injection hole.

16. A winding device comprising: The connector nozzle according to any one of claims 1 to 15; Support body, supporting the aforementioned connector nozzle; and The control unit controls the injection of compressed air into the aforementioned connector nozzle.

17. The winding apparatus according to claim 16, wherein, The aforementioned take-up device has a control mode for splicing the first type of yarn and the second type of yarn. The control unit is configured to execute a control mode in which compressed air is injected from the first upstream injection hole and the first downstream injection hole, compressed air is injected from the second upstream injection hole and the second downstream injection hole, and compressed air injection from the first upstream injection hole and the first downstream injection hole and compressed air injection from the second upstream injection hole and the second downstream injection hole are stopped.

18. The winding apparatus according to claim 16, wherein, The aforementioned take-up device has a control mode for performing a third type of yarn splicing. The control unit is configured to execute the following control mode: in this control mode, compressed air is started to be injected from the first upstream injection hole and the first downstream injection hole, compressed air is started to be injected from the second upstream injection hole and the second downstream injection hole, compressed air is stopped from being injected from the first upstream injection hole and the first downstream injection hole, compressed air is started again from the first upstream injection hole and the first downstream injection hole, compressed air is stopped from being injected from the second upstream injection hole and the second downstream injection hole, and compressed air is stopped from being injected from the first upstream injection hole and the first downstream injection hole.

19. The winding apparatus according to claim 16, wherein, The aforementioned take-up device has a control mode for performing a fourth type of yarn splicing. The control unit is configured to execute the following control mode: in this control mode, compressed air is started to be injected from the second upstream injection hole and the second downstream injection hole, compressed air is started to be injected from the first upstream injection hole and the first downstream injection hole, compressed air is stopped from being injected from the second upstream injection hole and the second downstream injection hole, compressed air is started again from the second upstream injection hole and the second downstream injection hole, compressed air is stopped from being injected from the first upstream injection hole and the first downstream injection hole, and compressed air is stopped from being injected from the second upstream injection hole and the second downstream injection hole.

20. The winding apparatus according to claim 16, wherein, The aforementioned take-up device includes a control mode for splicing a fifth type of yarn. The take-up device also includes a yarn shrinkage suppression rod that clamps the fifth type of yarn between itself and the support body for holding. The control unit is configured to execute a control mode in which, while the fifth type of yarn is being held by the yarn shrinkage suppression rod, compressed air is injected from the first upstream injection hole and the first downstream injection hole, and then the injection of compressed air from the first upstream injection hole and the first downstream injection hole is stopped. With the yarn shrinkage suppression lever released from its grip, compressed air is injected from the first upstream injection hole and the first downstream injection hole, and compressed air is injected from the second upstream injection hole and the second downstream injection hole. Then, the injection of compressed air from the first upstream injection hole and the first downstream injection hole and the injection of compressed air from the second upstream injection hole and the second downstream injection hole are stopped simultaneously.

21. The winding apparatus according to claim 16, wherein, The aforementioned take-up device has a control mode for performing a sixth type of yarn splicing. The control unit is configured to execute a control mode in which compressed air is injected from the first upstream injection hole and the first downstream injection hole, compressed air is stopped from being injected from the first upstream injection hole and the first downstream injection hole, compressed air is injected from the second upstream injection hole and the second downstream injection hole, and compressed air is stopped from being injected from the second upstream injection hole and the second downstream injection hole.

22. The winding apparatus according to any one of claims 16 to 21, wherein, The winding device described above includes a pressure adjustment unit that adjusts the injection pressure from at least one of the first upstream injection hole, the second upstream injection hole, the first downstream injection hole, and the second downstream injection hole.

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