WO2023213260A1

WO2023213260A1 - Rotary hook shuttle structure

Info

Publication number: WO2023213260A1
Application number: PCT/CN2023/091949
Authority: WO
Inventors: 王建波
Original assignee: 无锡品益缝纫机有限公司
Priority date: 2022-03-05
Filing date: 2023-05-04
Publication date: 2023-11-09
Also published as: CN114808292A; CN219315243U

Abstract

A rotary hook shuttle structure, comprising a rotary hook shuttle body (1), a mounting base (2) being arranged on the rotary hook shuttle body (1), a mounting hole (3) being formed on the mounting base (2), a rotary hook shuttle bowl (4) being arranged in the rotary hook shuttle body (1), a retaining ring (5) being arranged on the rotary hook shuttle body (1), a first tail hook (8) being arranged on the retaining ring (5), a retaining ring edge strip (6) matching the rotary hook shuttle bowl (4) being arranged on the retaining ring (5), a rotary hook shuttle skin (7) being arranged on the rotary hook shuttle body (1) to correspond to the retaining ring (5), and a second tail hook (9) corresponding to the first tail hook (8) being arranged on the rotary hook shuttle body (1). The present rotary hook shuttle structure effectively prevents the sewing thread from curling, ensuring the quality of the sewing thread stitches and improving the clothes sewing quality.

Description

a rotary hook structure

Technical field

The present invention relates to the technical field of sewing equipment, and in particular to a rotary hook structure.

Background technique

The rotary hook is an essential component in woven sewing. Its function is to hook up the upper thread on the sewing needle and interweave it with the suture in the bobbin to form a suture stitch. The existing rotary hook is used in knitting sutures. When sewing, due to the spin of the suture, it is easy to curl during the sewing process, resulting in unsatisfactory sewing stitches and thus affecting the sewing quality of the entire garment.

Contents of the invention

In view of the shortcomings of the existing technology, the present invention provides a rotary hook structure, which effectively prevents sutures from curling, ensures the quality of suture stitches, and improves the sewing quality of clothing.

The technical solution is as follows: a rotary hook structure, which includes a rotary shuttle body, a mounting seat is provided on the rotary shuttle body, a mounting hole is provided on the mounting base, a rotary hook bowl is provided in the rotary shuttle body, and a rotary hook bowl is provided on the rotary shuttle body. A retaining ring, the retaining ring is provided with a first tail hook, the retaining ring is provided with a retaining ring edge strip that matches the rotary hook bowl, the rotary shuttle body is provided with a rotary hook skin corresponding to the retaining ring, and the rotary shuttle body A second tail hook corresponding to the first tail hook is provided on the hook.

It is further characterized in that the second tail hook is an elastic member; the second tail hook is adjustable; a guide groove is provided on the hook body, a fastening nut is provided on the guide groove, and the second tail hook is threaded It is connected to the threaded hole on the fastening nut, and the fastening nut is connected to the hook body through bolts; the hook body is provided with a threaded sleeve, and the threaded sleeve is connected to the hook body through bolts. A through hole is provided inside, and the second tail hook is placed in the through hole and fixed by a locking screw.

The present invention adopts the above solution. Since the hook body is provided with a second tail hook corresponding to the first tail hook, during the sewing process, the second tail hook cooperates with the first tail hook to tighten the suture and accurately control the suture. The release time effectively prevents suture curling, ensures the quality of suture stitches, and improves the sewing quality of clothing.

Description of the drawings

Figure 1 is a schematic structural diagram of the rotary hook of the present invention;

Figure 2 is the right view of Figure 1;

Figure 3 is a schematic diagram of the second tail hook adjustment structure;

Figure 4 is a schematic diagram of the second tail hook adjustment structure;

Figure 5 is a schematic diagram of the hook thread hooking process.

Implementation

The present invention will be further described below in conjunction with the accompanying drawings and examples.

See Figure 1 and Figure 2, a rotary hook structure, which includes a rotary shuttle body 1. The rotary shuttle body 1 is provided with a mounting base 2. The mounting base 2 is provided with a mounting hole 3. The rotary shuttle body 1 is provided with a rotary shuttle bowl. 4. The rotary hook body 1 is provided with a retaining ring 5, and the retaining ring 5 is provided with a retaining ring edge 6 that matches the rotary hook bowl 4 to position the rotary hook bowl. The retaining ring is provided with a first tail hook 11, and the rotary hook The body 1 is provided with a rotary hook skin 7 corresponding to the retaining ring 5. The rotary hook body 1 is provided with a second tail hook 9 corresponding to the first tail hook 8. The first tail hook and the retaining ring are integrally formed, and the second tail hook is fixed. On the rotary hook body, its fixing method can be fixed on the rotary shuttle body by welding, fixing hoop, etc., or it can be integrally formed with the retaining ring or the rotary shuttle body. During the sewing process, the second tail hook assists the first tail hook. The hook tightens the suture, accurately controls the release time of the suture, effectively prevents the suture from curling, ensures the quality of the suture stitches, and improves the sewing quality of clothing.

See Figure 1, Figure 2, and Figure 3. The second tail hook 8 is adjustable. The hook body 1 is provided with a guide groove 10. The guide groove 9 is provided with a fastening nut 11. The second tail hook 9 is threaded and fastened. The threaded hole 12 of the nut 11 is connected, and the fastening nut 11 is connected to the shuttle body 1 through the bolt 13. The length of the second tail hook can be adjusted by adjusting the threaded hole of the fastening nut of the second tail hook, so that the second tail hook can be used Different fabrics and stitching improve the adaptability of the rotary hook and more effectively improve the sewing quality of clothing.

See Figure 1, Figure 2, and Figure 4. The second tail hook 8 is adjustable. A thread sleeve 14 is provided on the hook body 1. The thread sleeve is connected to the hook body 1 through bolts 13. A through hole 15 is provided in the thread sleeve 14. The second tail hook 9 is placed in the through hole 15 and fixed by the locking screw 16. By adjusting the length of the second tail hook 9 placed in the through hole 15 and locking the locking screw 16, the front and rear movement of the second tail hook 9 is realized. Adjustment makes the second tail hook suitable for different fabrics and sewing threads, which improves the adaptability of the rotary hook and more effectively improves the sewing quality of clothing.

The second tail hook in the above two embodiments is preferably an elastic member, such as a steel wire and other materials with a certain elasticity, which ensures the elasticity of adapting to the suture, further ensures the beauty of the suture stitch, and effectively improves the The quality of the garment’s sewing.

In the above two embodiments, only two adjustment methods of the second tail hook are described. Of course, other adjustment methods can also be used. As long as they can be adjusted forward and backward for different fabrics and different stitches, they are all covered by the present invention. protected range.

The working principle of the present invention is briefly described below:

In Figure 5, the suture 17 is sent to the bottom of the needle plate 19 through the needle 18. The rotary hook 20 hooks the suture 17 on the needle 18 and knits with the bottom thread pulled out from the lock housing. The suture will be separated before the rotary hook. Put it on the tail hook 21, take up the thread through the thread take-up lever 22, and complete the bottom thread sewing. When the thread supply amount is fixed, the needle pitch is small and the thread amount is large, the suture will easily fall off from the tail hook prematurely, causing the thread to fall off prematurely. Rotation leads to poor stitching and affects sewing quality; the needle pitch is small, the thread volume is small, and the resistance is large when the suture falls off the tail hook, resulting in poor suture take-up.

When the existing rotary hook is weaving sutures, due to the spin of the sutures, it is easy to curl during the sewing process, resulting in unsatisfactory sewing stitches and affecting the sewing quality of the entire garment. There is a second tail hook corresponding to the first tail hook. The first tail hook and the second tail hook cooperate to accurately control the release time of the suture, so that the suture is in an ideal tension state, which prevents the suture from curling. , ensuring the quality of stitches and improving the technical effect of sewing quality of clothing.

23 in the accompanying drawing is the sewing machine head.

The present invention and its embodiments have been schematically described above. This description is not limiting. What is shown in the drawings is only one of the embodiments of the present invention. The actual structure is not limited thereto. Those skilled in the art can Those who are inspired by the invention and design structural methods and embodiments similar to the technical solution without creative creativity shall fall within the protection scope of the invention without departing from the purpose of the invention.

Claims

A rotary shuttle structure, which includes a rotary shuttle body. The rotary shuttle body is provided with a mounting seat. The mounting base is provided with a mounting hole. The rotary shuttle body is provided with a rotary shuttle bowl. The rotary shuttle body is provided with a retaining ring. The retaining ring is provided with a retaining ring. There is a first tail hook, the retaining ring is provided with a retaining ring edge that matches the hook bowl, the hook body is provided with a hook skin corresponding to the retaining ring, and the hook body is provided with a hook that matches the third One tail hook corresponds to the second tail hook.
A rotary hook structure according to claim 1, characterized in that the second tail hook is an elastic member.
A rotary hook structure according to claim 1, characterized in that: the second tail hook is adjustable.
A rotary hook structure according to claim 3, characterized in that: the rotary hook body is provided with a guide groove, the guide groove is provided with a fastening nut, and the second tail hook is threaded and tightened The threaded hole on the nut is connected, and the fastening nut is connected to the shuttle body through bolts.
A rotary hook structure according to claim 3, characterized in that: the rotary shuttle body is provided with a screw sleeve, the screw sleeve is connected to the rotary shuttle body through bolts, and the screw sleeve is provided with a through hole, so The second tail hook is placed in the through hole and fixed by a locking screw.