Inner shuttle structure of rotating shuttle

Abstract

The utility model provides an inner shuttle structure of a rotating shuttle, which can effectively prevent a thread end of a sewing thread from being hooked by the rotating shuttle to be brought into a track again when a needle is started, effectively avoids thread jamming and thread breaking, and accordingly improves sewing efficiency and sewing effect. The inner shuttle structure of the rotating shuttle comprises an inner shuttle body of the rotating shuttle, and a needle falling hole is arranged on the inner shuttle body of the rotating shuttle. The rotating shuttle is characterized in that a thread containing groove is formed between the inner shuttle rail on the outer side face of the end, opposite to the needle falling hole, of the rotating shuttle inner shuttle body and the bottom of the rotating shuttle inner shuttle body, the thread containing groove comprises a thread blocking face, and the thread blocking face is used for containing and blocking a thread end of a sewing thread.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment, in particular to an inner hook structure of a rotary hook. Background Art

[0002] During the mechanical sewing process, the automatic thread trimming sewing machine has a short thread end left after trimming at the end of the last sewing. When starting to stitch, the thread end is easily brought into the track again by the rotary shuttle thread hook part, which can easily cause the thread to get stuck and break, thus affecting the sewing efficiency and sewing effect. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a hook inner shuttle structure, which can effectively prevent the thread end from being hooked by the hook and brought into the track again when starting to stitch, effectively avoiding thread jamming and breakage, thereby improving sewing efficiency and sewing effect.

[0004] The technical solution is as follows: a hook inner shuttle structure, which includes a hook inner shuttle body, and a needle drop hole is arranged on the hook inner shuttle body, characterized in that a thread accommodating groove is arranged between the inner shuttle track and the bottom of the hook inner shuttle body on the outer side surface of the hook inner shuttle body at the end opposite to the needle drop hole, and the thread accommodating groove includes a thread blocking surface, and the thread blocking surface accommodates and blocks the thread end of the sewing thread.

[0005] Its further characteristics are: the thread accommodating groove is formed by a protrusion and the inner shuttle body of the rotary hook, one side of the protrusion is a thread blocking surface; the thread accommodating groove is a U-shaped groove, one side of the U-shaped groove is a thread blocking surface; the thread accommodating groove is a V-shaped groove; one side of the V-shaped groove is a thread blocking surface; the thread blocking surface is an arc surface; the thread accommodating groove is arranged obliquely along the rotation direction of the rotary hook, and the thread blocking surface accommodates and blocks the thread end of the sewing thread.

[0006] The utility model adopts the above scheme, because a thread accommodating groove is arranged between the inner shuttle track and the bottom of the inner shuttle body of the rotary shuttle on the outer side surface of the end opposite to the needle drop hole of the inner shuttle body of the rotary shuttle, the thread accommodating groove includes a thread blocking surface, and the thread blocking surface accommodates and blocks the thread ends of the sutures. When the needle is started, after the rotary shuttle hooks the thread, when the suture passes through the back of the inner shuttle body of the rotary shuttle, in the relaxed state of the suture, the thread accommodating groove has a certain storage and blocking effect on the thread ends of the sutures, thereby preventing the thread ends from swinging disorderly and entering the rotary shuttle track, causing thread jamming and thread breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the inner hook structure of the rotary hook of the utility model;

[0008] Figure 2 for Figure 1 AA cross-sectional view of ;

[0009] Figure 3 It is a U-shaped wire duct structure;

[0010] Figure 4 It is a V-shaped wire trough structure. DETAILED DESCRIPTION

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] See Figure 1 A hook inner shuttle structure comprises a hook inner shuttle body 1, a needle drop hole 2 is arranged on the hook inner shuttle body 1, a thread accommodating groove 4 is arranged between the inner shuttle track 7 and the bottom 8 of the hook inner shuttle body on the outer side surface 3 of the hook inner shuttle body 1 at the opposite end of the needle drop hole 2, the thread accommodating groove comprises a thread blocking surface 6, and the thread blocking surface 6 accommodates and blocks the thread end of the suture. When starting the needle, after the hook hooks the suture, when the suture passes through the back of the hook inner shuttle body, when the suture is in a relaxed state, the thread accommodating groove has a certain storage and blocking effect on the suture thread end, thereby preventing the suture thread end from swinging disorderly and entering the hook track to cause thread jamming and thread breakage.

[0013] See Figure 1 , Figure 2 Embodiment 1: The thread groove 4 is formed by a protrusion 5 and an inner shuttle body 1 of the rotary hook. One side 6 of the protrusion is a thread blocking surface 6. The protrusion blocks the sewing thread to prevent the thread head from swinging without friction and entering the rotary hook track, causing thread jamming and thread breakage, thereby improving the sewing efficiency and sewing effect.

[0014] See Figure 1 , Figure 3 and Figure 4 Embodiment 2: The wire accommodating groove 4 is a U-shaped groove 9 or a V-shaped groove 10, one side of the U-shaped groove 9 and the V-shaped groove 10 is a wire blocking surface 6, and the wire accommodating groove is directly formed on the shuttle body of the rotary hook, which is simple to form, reduces the processing technology, and improves the processing efficiency.

[0015] In the above embodiment, the thread blocking surface is preferably an arc-shaped surface, so that the thread containing groove can not only contain and block the starting thread head, but also can smoothly escape in subsequent operation, preventing the thread from being hooked by the thread containing groove, resulting in unsmooth sewing.

[0016] Preferably, the thread accommodating groove 2 is arranged obliquely along the rotation direction of the rotary hook. When the suture is in a relaxed state, the thread blocking surface accommodates and blocks the thread end of the suture, further ensuring that the thread end is contained in the thread accommodating groove, further avoiding the disordered swing of the suture, and achieving a better thread blocking effect.

[0017] The thread blocking surface 6 in this embodiment is a schematic structure, and the actual thread blocking surface is a surface that prevents the needle thread from entering the hook track.

[0018] The utility model and its embodiments are described schematically above, which is not restrictive. The accompanying drawings only show one of the embodiments of the utility model, and the actual structure is not limited thereto. Ordinary technicians in this field can be inspired by this and, without departing from the purpose of the invention, form a thread-blocking groove between the inner shuttle track and the bottom of the inner shuttle body of the rotary hook through a thread-blocking surface on the outer side of the inner shuttle body of the rotary hook opposite to the needle drop hole. Structural methods and embodiments similar to the technical solution can be designed without creative design, and they should all fall within the protection scope of the utility model.

Claims

1. A hook inner shuttle structure, comprising a hook inner shuttle body (1), wherein the hook inner shuttle body (1) is provided with a needle drop hole (2), characterized in that: A thread receiving groove (4) is provided between the inner shuttle track (7) and the bottom (8) of the inner shuttle body of the rotary hook on the outer side surface (3) of the end opposite to the needle drop hole (2) of the rotary hook inner shuttle body, and the thread receiving groove comprises a thread blocking surface (6), and the thread blocking surface (6) accommodates and blocks the thread ends of the sewing thread.

2. The inner hook structure of a rotary hook according to claim 1, characterized in that: The thread containing groove (4) is formed by a protrusion (5) and the inner hook body (1) of the rotary hook, and one side of the protrusion (5) is a thread blocking surface (6).

3. The inner hook structure of a rotary hook according to claim 1, characterized in that: The wire accommodating groove (4) is a U-shaped groove (9), and one side of the U-shaped groove (9) is a wire blocking surface (6).

4. The inner hook structure of a rotary hook according to claim 1, characterized in that: The wire accommodating groove is a V-shaped groove (10), and one side of the V-shaped groove (10) is a wire blocking surface (6).

5. A hook inner hook structure according to any one of claims 1 to 4, characterized in that: The line blocking surface (6) is an arc-shaped surface.

6. The inner hook structure of a rotary hook according to claim 5, characterized in that: The wire accommodating groove (4) is arranged obliquely along the rotation direction of the rotary hook.

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