A shuttle sleeve

Abstract

The present invention relates to the technical field of sewing machines, and discloses a shuttle sleeve. A thread adjusting mechanism is provided between a thread passing groove and a thread outlet groove. After further adjusting the thread tension through the thread adjusting mechanism, the tension of the thread coming out of the thread outlet groove is ensured to be consistent, thereby ensuring the stability and consistency of the stitch. Specifically, the thread adjusting mechanism comprises a thread adjusting groove and a thread pressing shaft. After coming out of the thread passing groove, the thread passes through the thread adjusting groove and passes between the front end of the thread pressing shaft and the groove wall of the thread adjusting groove. By adjusting the adjusting piece at the rear end of the thread pressing shaft, the front end of the thread pressing shaft is adjusted to abut against the groove wall of the thread adjusting groove, thereby adjusting the pressing force of the front end of the thread pressing shaft on the thread. Since the thread is adjusted jointly by the thread pressing shaft and the inner wall of the thread adjusting groove, the adjustment process is stable, and the tension of the thread coming out of the thread outlet groove can be ensured to be consistent.

Description

Technical Field

[0001] The invention relates to the technical field of sewing machines, in particular to a shuttle sleeve. Background Art

[0002] When sewing, the traditional sewing machine directly installs the bobbin with the bottom thread wound around it in the rotary hook, and then installs the bobbin case (i.e. the cover of the rotary hook) on the rotary hook for use.

[0003] The sewing thread needs to maintain a certain tension during the sewing process in order to ensure the neatness and consistency of the sewing stitches. Since the thread tension is different when the bobbin is in a full thread state and a low thread state, and during the sewing process, the thread on the bobbin must pass through the thread groove to reach the thread outlet after coming out of the top of the bobbin case. The thread contact with the bobbin case during the transportation process will also cause different thread tensions at the thread outlet. The existing bobbin case is provided with a spring sheet on its side wall, and the thread tension is adjusted by pressing the free end of the spring sheet against the side wall of the bobbin case. Since the spring sheet itself has elastic force, the thread tension itself during the sewing process will affect the thread pressing effect of the spring sheet, resulting in unstable thread pressing effect of the spring sheet, thereby affecting the aesthetics of the sewing stitches. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing bobbin case is unstable when adjusting the thread pressure through the spring sheet, resulting in large differences in sewing stitches, affecting the aesthetics.

[0005] In order to solve the above technical problems, the present invention provides a shuttle sleeve, including a shuttle sleeve body, a thread pressing plate and a thread adjusting mechanism, wherein a thread cavity for accommodating a thread ball is provided in the shuttle sleeve body, a thread hole, a thread passing groove and a thread outlet groove are respectively provided on the shuttle sleeve body, the thread hole is communicated with the thread cavity, the thread outlet groove is provided on the side of the shuttle sleeve body, the thread passing groove is used to connect the thread hole and the thread outlet groove, the thread pressing plate is provided on the shuttle sleeve body and covers above the thread passing groove, and the thread adjusting mechanism is provided between the thread passing groove and the thread outlet groove and is used to adjust the tightness of the thread at the front end of the thread outlet groove;

[0006] The wire adjusting mechanism includes a wire adjusting groove and a wire pressing shaft. The front end of the wire pressing shaft extends into the wire adjusting groove and is used to abut the wire in the wire adjusting groove against the groove wall of the wire adjusting groove. The rear end of the wire pressing shaft is provided with an adjusting member for adjusting the abutting force of the front end of the wire pressing shaft.

[0007] Further preferably, the shuttle sleeve body is provided with a mounting hole for installing the wire pressing shaft, the mounting hole extends to the outer wall of the shuttle sleeve body and is connected to the wire adjusting groove, the adjusting member includes an adjusting screw and an elastic member, the elastic member is connected between the wire pressing shaft and the adjusting screw, and the adjusting screw drives the front end of the wire pressing shaft to gradually rest against the inner wall of the wire adjusting groove by adjusting the depth of the adjusting screw screwed into the mounting hole.

[0008] Further preferably, the adjusting screw and the wire pressing shaft are both horizontally arranged on the shuttle sleeve body, and the two are coaxially arranged.

[0009] Further preferably, a plurality of conductor posts are provided in the wire trough.

[0010] Further preferably, the wire posts are all arranged at intervals at the lower end of the wire pressing plate, and the wire passing groove is provided with an assembly hole corresponding to each of the wire posts.

[0011] Further preferably, the shuttle sleeve body includes a rotating sleeve and a bottom plate and an upper cover plate which are detachably connected to the bottom and top of the rotating sleeve respectively, the rotating sleeve, the bottom plate and the upper cover plate together define the wire cavity, the wire hole is arranged in the middle of the upper cover plate, the wire passing groove and the wire adjusting mechanism are arranged on the upper cover plate, and the wire outlet groove is arranged on the side of the upper cover plate.

[0012] Further preferably, a positioning structure and a locking structure which are connected and fastened to the rotating sleeve are provided on the upper cover plate.

[0013] Further preferably, the positioning structure includes an elastic column, a positioning hole provided on the rotating sleeve and a positioning groove provided on the upper cover plate, one end of the elastic column is provided in the positioning groove, and the other end is movably buckled in the positioning hole.

[0014] Further preferably, the elastic column is provided with a handle, the upper cover plate is provided with a limit block, and the handle is provided with an avoidance groove corresponding to the limit block.

[0015] Further preferably, the locking structure includes a plurality of hooks provided on the upper end of the rotating sleeve and slots provided on the upper cover plate and matching with the hooks, and the hooks are arranged at intervals along the circumference of the rotating sleeve.

[0016] Further preferably, the bottom edge of the rotating sleeve extends inwardly to form a connecting portion, and the lower outer edge of the bottom plate is connected to the connecting portion.

[0017] Further preferably, the upper end surface of the base plate and / or the lower end surface of the upper cover plate is provided with a wire structure to prevent the wires from becoming loose and knotted.

[0018] Further preferably, the wire structure is a plurality of spaced annular protrusions gradually diffused from the center of the base plate toward the outer edge of the base plate and / or a plurality of spaced annular protrusions gradually diffused from the center of the upper cover plate toward the outer edge of the upper cover plate.

[0019] Further preferably, a through hole column for the wire rod to pass through is provided in the middle of the bottom plate.

[0020] Further preferably, the through hole column is arranged in a truncated cone shape.

[0021] Further preferably, the side wall of the rotating sleeve is provided with a positioning block mounted in cooperation with the rotary hook of the sewing machine.

[0022] Compared with the prior art, the shuttle sleeve of the embodiment of the present invention has the following beneficial effects:

[0023] In the shuttle sleeve of the embodiment of the present invention, the thread ball is accommodated in the thread cavity of the shuttle sleeve body, and the thread coming out of the thread cavity passes through the thread hole and the thread groove and then combines with the sewing surface thread loop to form a stitch on the sewing material. A thread pressing plate is provided above the thread groove, and the thread pressing plate is used to press the thread surface in the thread groove to prevent the thread from running away upward during the sewing process. Moreover, the thread pressing plate can provide a certain pressure to the thread in the thread groove, thereby ensuring the tension of the thread. Furthermore, a thread adjusting mechanism is provided between the thread groove and the thread outlet groove, and the thread can be further adjusted by the thread adjusting mechanism. After the tension is adjusted, the tension of the wire coming out of the wire outlet groove is guaranteed to be consistent, thereby ensuring the stability and consistency of the stitch. Specifically, the wire adjusting mechanism includes a wire adjusting groove and a wire pressing shaft. After the wire comes out of the wire groove, it passes through the wire adjusting groove and passes between the front end of the wire pressing shaft and the groove wall of the wire adjusting groove. By adjusting the adjusting piece at the rear end of the wire pressing shaft, the front end of the wire pressing shaft is adjusted to abut the groove wall of the wire adjusting groove, thereby adjusting the pressing force of the front end of the wire pressing shaft on the wire. Since the wire is adjusted jointly by the wire pressing shaft and the inner wall of the wire adjusting groove, the adjustment process is smooth and can also ensure the consistency of the tension of the wire coming out of the wire outlet groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a shuttle sleeve according to an embodiment of the present invention;

[0025] Figure 2 is a structural schematic diagram of the shuttle sleeve of another perspective of an embodiment of the present invention;

[0026] Figure 3 1 is a schematic diagram of the exploded structure of the shuttle sleeve according to an embodiment of the present invention;

[0027] Figure 4 yes Figure 1 AA section structural diagram;

[0028] Figure 5 is a schematic structural diagram of an upper cover plate according to an embodiment of the present invention;

[0029] Figure 6 is a schematic structural diagram of a wire pressing plate according to an embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of the shuttle sleeve threading state according to an embodiment of the present invention.

[0031] In the figure, 10, shuttle sleeve body; 20, line adjustment mechanism; 30, line pressing plate; 40, thread reel; 50, thread ball; 101, rotating sleeve; 102, bottom plate; 103, upper cover plate; 104, line cavity; 105, line hole; 106, line slot; 107, line outlet slot; 108, mounting hole; 109, assembly hole; 110, elastic column; 111, positioning hole; 112, positioning slot; 113, handle; 114, limit block; 115, avoidance slot; 116, hook; 117, slot; 118, connecting part; 119, annular protrusion; 120, through-hole column; 121, positioning block; 201, line adjustment slot; 202, line pressing reel; 203, adjusting screw; 204, elastic member; 301, wire column. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] like Figures 1 to 6 As shown, a shuttle sleeve of a preferred embodiment of the present invention comprises a shuttle sleeve body 10, a thread pressing plate 30 and a thread adjusting mechanism 20. The shuttle sleeve body 10 is provided with a thread cavity 104 for accommodating a thread ball. The shuttle sleeve body 10 is provided with a thread hole 105, a thread passing groove 106 and a thread outlet groove 107. The thread hole 105 is connected with the thread cavity 104. The thread outlet groove 107 is provided on the side of the shuttle sleeve body 10. The thread passing groove 106 is used to connect the thread hole 105 and the thread outlet groove 107. The thread pressing plate 30 is provided on the shuttle sleeve body 10 and covers the thread passing groove 106. The thread adjusting mechanism 20 is provided on the thread passing groove 106. The wire adjusting mechanism 20 is between the wire outlet groove 107 and is used to adjust the tightness of the wire at the front end of the wire outlet groove 107; the wire adjusting mechanism 20 includes a wire adjusting groove 201 and a wire pressing shaft 202, the front end of the wire pressing shaft 202 extends into the wire adjusting groove 201 and is used to abut the wire in the wire adjusting groove 201 against the groove wall of the wire adjusting groove 201, and the rear end of the wire pressing shaft 202 is provided with an adjusting member for adjusting the abutting force of the front end of the wire pressing shaft 202.

[0035] Based on the above-mentioned shuttle sleeve, the thread ball 50 is accommodated in the thread cavity 104 of the shuttle sleeve body 10, and the thread in the thread cavity 104 comes out from the thread hole 105, passes through the thread groove 106 and the thread outlet groove 107, and then combines with the upper thread ring of the sewing machine to form a stitch on the sewing material. A thread pressing plate 30 is provided above the thread groove 106. The thread pressing plate 30 presses the thread surface in the thread groove 106 to prevent the thread from running upward during the sewing process. Moreover, the thread pressing plate 30 can provide a certain pressure to the thread in the thread groove 106, so as to ensure the tension of the thread. Furthermore, a thread adjusting mechanism 20 is provided between the thread groove 106 and the thread outlet groove 107. According to the actual situation of sewing, the thread adjusting mechanism 20 is further After adjusting the tension of the wire, the tension of the wire coming out of the wire outlet groove 107 is ensured to be consistent, thereby ensuring the stability and consistency of the thread trace. Specifically, the wire adjusting mechanism 20 includes a wire adjusting groove 201 and a wire pressing shaft 202. After the wire comes out of the wire passing groove 106, it passes through the wire adjusting groove 201 and passes between the front end of the wire pressing shaft 202 and the groove wall of the wire adjusting groove 201. By adjusting the adjustment piece at the rear end of the wire pressing shaft 202, the force with which the front end of the wire pressing shaft 202 abuts against the groove wall of the wire adjusting groove 201 is adjusted, thereby adjusting the pressure of the front end of the wire pressing shaft 202 on the wire. Since the wire is adjusted together with the inner wall of the wire adjusting groove 201 through the wire pressing shaft 202, the adjustment process is smooth and can also ensure the consistency of the tension of the wire coming out of the wire outlet groove 107.

[0036] In the present embodiment, the thread in the thread ball 50 goes out from the thread passing groove 106 directly through the thread hole 105 and the thread adjusting groove 201 and then goes out from the thread outlet groove 107. Compared with the existing thread routing method in which the thread of the shuttle case needs to be wound around the upper side of the cover plate and then wound into the thread passing groove 106 from the top of the cover plate, the shuttle case in the present embodiment reduces the thread outlet distance, thereby reducing the friction time between the thread and the shuttle case and reducing the occurrence of burrs on the thread.

[0037] Furthermore, a mounting hole 108 for mounting the wire pressing shaft 202 is provided on the shuttle sleeve body 10, and the mounting hole 108 extends to the outer wall of the shuttle sleeve body 10 to be connected with the wire adjusting groove 201, and the adjusting member includes an adjusting screw 203 and an elastic member 204, and the elastic member 204 is preferably a spring, and the elastic member 204 is connected between the wire pressing shaft 202 and the adjusting screw 203, and the adjusting screw 203 drives the front end of the wire pressing shaft 202 to gradually abut against the wire adjusting groove 201 by adjusting the depth of the screw 203 screwed into the mounting hole 108. When the tension of the sewing thread is not enough, the adjusting screw 203 is screwed into the mounting hole 108 by a screwdriver or other adjusting tool, the elastic member 204 is compressed, and the pressing shaft 202 extends into the adjusting groove 201 under the action of elastic force to increase the pressure between the front end of the pressing shaft 202 and the inner wall of the adjusting groove 201, thereby increasing the resistance of the thread passing therebetween and increasing the tension of the thread. Similarly, when the tension of the sewing thread is large, the adjusting screw 203 is screwed out of the mounting hole 108, the elastic force of the elastic member 204 is reduced, the pressure between the front end of the pressing shaft 202 and the inner wall of the adjusting groove 201 is reduced, thereby reducing the resistance of the thread therebetween and reducing the tension of the thread, thereby ensuring that the resistance of the thread can be adjusted, and its adaptability is wide. Preferably, the adjusting screw 203 and the pressing shaft 202 are both horizontally arranged on the shuttle sleeve body 10, and the two are coaxially arranged, so as to realize that the adjusting structure is arranged at the upper end of the shuttle sleeve body 10, and the space at the upper end of the shuttle sleeve body 10 is fully utilized, thereby improving the integrity of the entire shuttle sleeve structure.

[0038] In this embodiment, a plurality of wire posts 301 are provided in the wire groove 106. After the wire comes out of the wire cavity 104, it is respectively wound on the wire posts 301 along the wire groove 106. Under the guiding effect of the wire posts 301, the wire can be prevented from being knotted in the wire groove 106, ensuring the smoothness of the wire conveying process, thereby ensuring the stability and neatness of the stitches on the sewing material. Further, the wire posts 301 are spaced apart at the lower end of the wire pressing plate 30, and the wire groove 106 is provided with assembly holes 109 corresponding to each wire post 301. Based on this, the wire posts 301 can guide the wire and can also be installed in the corresponding assembly holes 109 through the guide posts to realize the connection between the wire pressing plate 30 and the shuttle sleeve body 10.

[0039] In this embodiment, the shuttle sleeve body 10 includes a rotating sleeve 101 and a bottom plate 102 and an upper cover plate 103 which are detachably connected to the bottom and the top of the rotating sleeve 101 respectively. The rotating sleeve 101, the bottom plate 102 and the upper cover plate 103 jointly define a wire outlet cavity 104. The wire hole 105 is arranged in the middle of the upper cover plate 103. The wire groove 106 and the wire adjustment mechanism 20 are arranged on the upper cover plate 103. The wire outlet groove 107 is arranged on the side of the upper cover plate 103. Based on this, the wire cavity 104 of the shuttle sleeve in this embodiment can be used to completely accommodate the wire ball 50 without installing the wire ball 50 through the wire core, which greatly increases the wire capacity of the wire cavity 104, reduces the number of times of changing wires during sewing, and improves the sewing work efficiency while ensuring the sewing quality. During specific operations, refer to Figure 7 As shown, the bottom plate 102 and the upper cover plate 103 are fixed on the wire-punching mechanism. After the wire is fully punched, the rotating sleeve 101 can be installed for use. This structure replaces the traditional wire-changing method of replacing the wire core, and greatly increases the wire capacity of the wire cavity 104. Furthermore, a through-hole column 120 is provided in the middle of the bottom plate 102 for the wire-punching shaft 40 to pass through. The wire-punching mechanism includes the wire-punching shaft 40. When punching the wire, the wire-punching shaft 40 of the wire-punching mechanism is passed through the bottom plate 102 and then fixed to the upper cover plate 103. The wire-punching mechanism drives the wire-punching shaft 40 to rotate and wind the wire around the wire-punching shaft 40 between the bottom plate 102 and the upper cover plate 103. Then, after the rotating sleeve 101 and the bottom plate 102 are installed, the wire-punching shaft 40 is withdrawn from the shuttle sleeve. In this way, it is possible to achieve the absence of a wire core in the wire cavity 104 of the shuttle sleeve, which greatly increases the amount of wire in the wire cavity 104 and improves the sewing efficiency. In order to improve the sewing efficiency, a through hole column 120 is arranged on the bottom plate 102. On the one hand, it is convenient to fix with the thread-binding shaft 40 of the thread-binding mechanism, and on the other hand, it is convenient to wind the thread. The present embodiment directly binds the thread in the thread cavity 104 of the shuttle sleeve. Compared with the existing shuttle sleeve without a mandrel, it can bind the thread of various materials (the existing shuttle sleeve without a mandrel directly places the ball of thread 50 in the thread cavity 104, but when sewing with a slippery thread such as nylon thread, the nylon thread is relatively smooth and is not easy to be balled, which easily causes the thread in the thread cavity 104 to spread out and become knotted), and it has strong adaptability. Preferably, the through hole column 120 is arranged in a truncated cone shape, so as to reduce the volume of the thread cavity 104 occupied by the through hole column 120 and increase the thread capacity of the thread cavity 104. At the same time, in the initial thread-binding state, the through hole column 120 arranged in a truncated cone shape can make the thread better adhere to the through hole column 120, thereby ensuring the thread-binding quality.

[0040] In this embodiment, the upper cover 103 is provided with a positioning structure and a locking structure which are connected and fastened to the rotating sleeve 101. The positioning structure ensures that the upper cover 103 is well positioned when connected to the rotating sleeve 101, and ensures that the position of the upper cover 103 and the rotating sleeve 101 is fixed each time they are disassembled and connected, so as to better match the rotary hook.

[0041] Specifically, the positioning structure includes an elastic column 110, a positioning hole 111 provided on the rotating sleeve 101, and a positioning groove provided on the upper cover 103. One end of the elastic column 110 is provided in the positioning groove 112, and the other end is movably hooked in the positioning hole 111. During installation, the elastic column 110 is positioned by passing it through the positioning hole 111 on the rotating sleeve 101. During disassembly, since the elastic column 110 is elastic, the elastic column 110 is compressed toward the positioning groove 112 to be disengaged from the positioning hole 111 of the rotating sleeve 101 for disassembly. The structure is simple and the operation is convenient. It can realize fast assembly and disassembly and improve sewing efficiency. Furthermore, in order to facilitate the operation and adjustment of the elastic column 110, a handle 113 is provided on the elastic column 110, and a limit block 114 is provided on the upper cover 103. The handle 113 is provided with an avoidance groove 115 corresponding to the limit block 114. The limit block 114 can be used to limit the elastic column 110. The adjustment distance can prevent the elastic column 110 from falling off from the positioning groove 112. The handle 113 is used to adjust the elastic column 110 to assemble or disengage with the positioning hole 111 to achieve the disassembly and installation between the upper cover 103 and the rotating sleeve 101. Generally, the handle 113 is attached to the upper cover 103. When adjustment is required, the handle 113 is pulled up to drive the elastic column 110 to rotate in the positioning groove 112 to match the best operating angle, thereby facilitating and saving effort during adjustment.

[0042] Furthermore, the locking structure includes a plurality of hooks 116 provided on the upper end of the rotating sleeve 101 and slots 117 provided on the upper cover plate 103 and matching with the hooks 116. The hooks 116 are arranged at intervals along the circumference of the rotating sleeve 101. When the upper cover plate 103 and the rotating sleeve 101 are positioned, the upper cover plate 103 and the rotating sleeve 101 are fixed by hooking the hooks 116 on the rotating sleeve 101 into the corresponding slots 117. The connection between the hooks 116 and the slots 117 facilitates the detachable connection between the upper cover plate 103 and the rotating sleeve 101. When installing and disassembling, it is only necessary to slightly rotate the lower rotating sleeve 101 so that the hooks 116 and the slots 117 are engaged with or disengaged from each other.

[0043] In this embodiment, the bottom edge of the rotating sleeve 101 extends inward to form a connecting portion 118, and the outer edge of the lower end of the bottom plate 102 overlaps the connecting portion 118. After the wire punching mechanism has filled the wires, the rotating sleeve 101 can be directly put on the bottom plate 102 and the upper cover plate 103 to be positioned and locked. The operation is simple, and it can ensure a large wire capacity of the wire cavity 104.

[0044] Preferably, a wire structure is provided on the upper end surface of the base plate 102 or on the lower end surface of the upper cover plate 103 or on both the upper end surface of the base plate 102 and the lower end surface of the upper cover plate 103 to prevent the thread from becoming loose and knotted. The wire structure prevents the thread from becoming knotted or scattered or tangled in the thread cavity 104 when the rotary shuttle rotates at high speed during sewing. The wire structure is a plurality of spaced annular protrusions 119 gradually diffused from the center of the base plate 102 toward the outer edge of the base plate 102, or a plurality of spaced annular protrusions 119 gradually diffused from the center of the upper cover plate 103 toward the outer edge of the upper cover plate 103. Each annular protrusion 119 can form resistance to the thread on the one hand to prevent the thread from becoming knotted or loose when being quickly supplied and pulled out of the thread cavity 104. At the same time, it can also play a certain guiding role on the thread, so that the thread can be supplied in the direction of the annular protrusion 119, thereby avoiding tangled or scattered threads and improving sewing quality.

[0045] In this embodiment, the side wall of the rotating sleeve 101 is provided with a positioning block 121 installed in cooperation with the rotary hook of the sewing machine, the shuttle sleeve is installed in the rotary hook, and the rotary hook is installed on the sewing machine. The rotary hook is provided with a positioning groove 112 that cooperates with the positioning block 121. The positioning block 121 is snapped into the positioning groove 112 to ensure good positioning of the shuttle sleeve and the rotary hook during assembly, thereby ensuring the normal operation of the rotary hook and shuttle sleeve of the sewing machine.

[0046] In summary, the embodiment of the present invention provides a shuttle sleeve, wherein the thread ball 50 is accommodated in the thread cavity 104 of the shuttle sleeve body 10, and the thread coming out of the thread cavity 104 passes through the thread hole 105 and the thread groove 106 and the thread outlet groove 107, and then combines with the sewing surface thread loop to form a stitch on the sewing material, and a thread pressing plate 30 is provided above the thread groove 106, and the thread pressing plate 30 is used to press the thread surface in the thread groove 106 to prevent the thread from running upward during the sewing process, and the thread pressing plate 30 can provide a certain pressure to the thread in the thread groove 106, thereby ensuring the tension of the thread, and further, a thread adjusting mechanism 20 is provided between the thread groove 106 and the thread outlet groove 107, and the thread tension is further adjusted by the thread adjusting mechanism 20 to ensure that the thread outlet is The tension of the wire coming out of the groove 107 is consistent, thereby ensuring the stability and consistency of the stitch. Specifically, the wire adjusting mechanism 20 includes a wire adjusting groove 201 and a wire pressing shaft 202. After the wire comes out of the wire groove 106, it passes through the wire adjusting groove 201 and passes between the front end of the wire pressing shaft 202 and the groove wall of the wire adjusting groove 201. By adjusting the adjustment piece at the rear end of the wire pressing shaft 202, the front end of the wire pressing shaft 202 is adjusted to abut against the groove wall of the wire adjusting groove 201, thereby adjusting the pressing force of the front end of the wire pressing shaft 202 on the wire. Since the wire is adjusted together with the inner wall of the wire adjusting groove 201 through the wire pressing shaft 202, the adjustment process is smooth, and it can also ensure that the tension of the wire coming out of the wire outlet groove 107 is consistent.

[0047] It should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0048] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A shuttle sleeve, It is characterized in that It includes a shuttle sleeve body, a thread pressing plate and a thread adjusting mechanism, wherein the shuttle sleeve body is provided with a thread cavity for accommodating a thread ball, and the shuttle sleeve body is provided with a thread hole, a thread passing groove and a thread outlet groove, respectively, the thread hole is communicated with the thread cavity, the thread outlet groove is provided on the side of the shuttle sleeve body, the thread passing groove is used to connect the thread hole and the thread outlet groove, the thread pressing plate is provided on the shuttle sleeve body and covers the thread passing groove, and the thread adjusting mechanism is provided between the thread passing groove and the thread outlet groove and is used to adjust the tightness of the thread at the front end of the thread outlet groove; The wire adjusting mechanism includes a wire adjusting groove and a wire pressing shaft. The front end of the wire pressing shaft extends into the wire adjusting groove and is used to abut the wire in the wire adjusting groove against the groove wall of the wire adjusting groove. The rear end of the wire pressing shaft is provided with an adjusting member for adjusting the abutting force of the front end of the wire pressing shaft.

2. The shuttle sleeve according to claim 1, It is characterized in that The shuttle sleeve body is provided with a mounting hole for mounting the wire pressing shaft, the mounting hole extends to the outer wall of the shuttle sleeve body and is connected to the wire adjusting groove, the adjusting member includes an adjusting screw and an elastic member, the elastic member is connected between the wire pressing shaft and the adjusting screw, and the adjusting screw drives the front end of the wire pressing shaft to gradually abut against the inner wall of the wire adjusting groove by adjusting the depth of the adjusting screw screwed into the mounting hole.

3. The shuttle sleeve according to claim 2, It is characterized in that The adjusting screw and the thread pressing shaft are both horizontally arranged on the shuttle sleeve body, and the two are coaxially arranged.

4. The shuttle sleeve according to claim 3, It is characterized in that A plurality of conductor posts are arranged in the wire trough.

5. The shuttle sleeve according to claim 4, It is characterized in that The wire posts are all arranged at intervals at the lower end of the wire pressing plate, and the wire passing groove is provided with assembly holes corresponding to the wire posts.

6. The shuttle sleeve according to any one of claims 1 to 5, It is characterized in that The shuttle sleeve body includes a rotating sleeve and a bottom plate and an upper cover plate which are detachably connected to the bottom and top of the rotating sleeve respectively. The rotating sleeve, the bottom plate and the upper cover plate together define the wire cavity. The wire hole is arranged in the middle of the upper cover plate, the wire passing groove and the wire adjusting mechanism are arranged on the upper cover plate, and the wire outlet groove is arranged on the side of the upper cover plate.

7. The shuttle sleeve according to claim 6, It is characterized in that The upper cover plate is provided with a positioning structure and a locking structure which are connected and fastened to the rotating sleeve.

8. The shuttle sleeve according to claim 7, It is characterized in that The positioning structure comprises an elastic column, a positioning hole arranged on the rotating sleeve and a positioning groove arranged on the upper cover plate. One end of the elastic column is arranged in the positioning groove, and the other end is movably buckled in the positioning hole.

9. The shuttle sleeve according to claim 8, It is characterized in that The elastic column is provided with a handle, the upper cover plate is provided with a limit block, and the handle is provided with an avoidance groove corresponding to the limit block.

10. The shuttle sleeve according to claim 7, It is characterized in that The locking structure includes a plurality of hooks disposed on the upper end of the rotating sleeve and a slot disposed on the upper cover plate and matched with each of the hooks, and each of the hooks is arranged at intervals along the circumference of the rotating sleeve.

11. The shuttle sleeve according to claim 10, It is characterized in that The bottom edge of the rotating sleeve extends inward to form a connecting portion, and the lower outer edge of the bottom plate is connected to the connecting portion.

12. The shuttle sleeve according to claim 8, It is characterized in that The upper end surface of the bottom plate and / or the lower end surface of the upper cover plate are provided with a wire structure to prevent the wires from becoming loose and knotted.

13. The shuttle sleeve according to claim 12, It is characterized in that The wire structure is a plurality of annular protrusions arranged at intervals and gradually diffused from the center of the bottom plate toward the outer edge of the bottom plate and / or a plurality of annular protrusions arranged at intervals and gradually diffused from the center of the upper cover plate toward the outer edge of the upper cover plate.

14. The shuttle sleeve according to claim 13, It is characterized in that A through hole column for the wire rod to pass through is provided in the middle of the bottom plate.

15. The shuttle sleeve according to claim 14, It is characterized in that The through hole column is arranged in a truncated cone shape.

16. The shuttle sleeve according to claim 6, It is characterized in that The side wall of the rotating sleeve is provided with a positioning block which is installed in cooperation with the rotary hook of the sewing machine.

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