Static shuttle race and durable rotating shuttle device

Abstract

The utility model relates to the technical field of sewing machine accessories, and discloses a static shuttle race and durable rotating shuttle device which comprises a rotating shuttle shell, a rotating shuttle rod is fixed to the rear side of the rotating shuttle shell, a shuttle tip part is fixed to the upper portion of the surface of the rotating shuttle shell, a rotating shuttle plate is fixed to the right side of the rotating shuttle shell, and a thread hooking part is fixed to the right side of the front face of the rotating shuttle shell. Protection plates are fixed to the surface of the left side of the rotating shuttle shell and the surface of the rotating shuttle plate, and guide grooves are formed in the two sides of the inner wall of the rotating shuttle shell; the rotating shuttle has an abrasion-resistant protection function, can effectively prevent the rotating shuttle from being impacted or abraded in the high-speed operation process so as to prolong the service life of the rotating shuttle, has a guiding function, can ensure that a sewing needle keeps an accurate track in the vertical reciprocating motion process, improves the uniformity and attractiveness of stitches, and improves the production efficiency. The stitch error caused by tiny deviation in the rotating shuttle operation process can be reduced, and the overall sewing quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine accessories technology, specifically to a static shuttle bed and a durable rotary shuttle device. Background Technology

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on fabric, allowing one or more layers of fabric to interweave or sew together. The rotary hook is the thread winding part of the sewing machine. It hooks the thread loop with its tip, expands the thread loop, and guides the thread loop to wrap around the bobbin to form a lockstitch. This function of the rotary hook enables the sewing machine to perform sewing work efficiently and accurately.

[0003] Currently, most rotary hooks lack protective features on the outside of the hook shell during use, leaving it directly exposed to the external environment. During sewing machine operation, the hook shell constantly comes into contact with fabric, thread ends, etc., and is subject to friction and wear. Moreover, current rotary hooks lack guiding functions, and the sewing needle may make unnecessary contact with the hook surface when inserting into the fabric. This contact is particularly noticeable during high-speed sewing, as both the sewing needle and the rotary hook are moving rapidly. The friction between the sewing needle and the hook surface causes wear on both, requiring more frequent maintenance and upkeep from the operator. Utility Model Content

[0004] The purpose of this invention is to provide a static shuttle bed and a durable rotary shuttle device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a durable rotary shuttle device, comprising a rotary shuttle shell, a rotary shuttle rod fixed to the rear side of the rotary shuttle shell, a shuttle tip fixed to the upper surface of the rotary shuttle shell, a rotary shuttle plate fixed to the right side of the rotary shuttle shell, a hook line portion fixed to the right side of the front of the rotary shuttle shell, protective plates fixed to the left side surface of the rotary shuttle shell and the surface of the rotary shuttle plate, and guide grooves provided on both sides of the inner wall of the rotary shuttle shell.

[0006] Preferably, the protective plate is arranged in a semi-circular arc shape, and the material of the protective plate is alumina ceramic.

[0007] Preferably, the surface of the protective plate is embedded with a plurality of wear-resistant balls, and the wear-resistant balls are rotatably connected to the protective plate.

[0008] A static shuttle bed includes a shuttle bed body located inside a rotary shuttle shell. Guide strips are fixed on both the left and right sides of the surface of the shuttle bed body, and the guide strips are slidably connected to the inner wall of the guide groove. A support frame is provided on the front side of the shuttle bed body, and the support frame is fixedly connected to the inner wall of the shuttle bed body. A guide plate is provided above the support frame, and a guide groove is formed on the surface of the guide plate.

[0009] Preferably, a positioning block is fixed to the top of the support frame, and a fixing groove is provided at the bottom of the guide plate, with the positioning block engaging with the inner wall of the fixing groove.

[0010] Preferably, the front and rear sides of the inner wall of the guide groove are both arc-shaped, and the surfaces of the guide plate and the shuttle body are coated with an antistatic coating.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention features wear-resistant protection, effectively preventing the rotary hook from being impacted or worn during high-speed operation, thus extending its service life. It also has a guiding function, ensuring that the sewing needle maintains a precise trajectory during reciprocating motion, thereby improving the uniformity and aesthetics of the stitches. It can reduce stitch errors caused by minor deviations during the operation of the rotary hook, thus improving the overall sewing quality. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0015] Figure 3 This is a three-dimensional schematic diagram of the rotary shuttle shell in this utility model;

[0016] Figure 4 This is a three-dimensional schematic diagram of the shuttle bed body in this utility model.

[0017] In the diagram: 1. Shuttle shell; 2. Shuttle rod; 3. Shuttle tip; 4. Shuttle plate; 5. Hook section; 6. Protective plate; 7. Guide groove; 8. Shuttle body; 9. Guide bar; 10. Support frame; 11. Guide plate; 12. Guide groove; 13. Wear-resistant ball bearings; 14. Positioning block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4As shown, a durable rotary shuttle device includes a rotary shuttle shell 1, a rotary shuttle rod 2 fixed to the rear side of the rotary shuttle shell 1, a shuttle tip 3 fixed to the upper surface of the rotary shuttle shell 1, a rotary shuttle plate 4 fixed to the right side of the rotary shuttle shell 1, a hook line part 5 fixed to the right side of the front of the rotary shuttle shell 1, a protective plate 6 fixed to the left side surface of the rotary shuttle shell 1 and the surface of the rotary shuttle plate 4, and guide grooves 7 are provided on both sides of the inner wall of the rotary shuttle shell 1.

[0020] The protective plate 6 is designed in a semi-circular arc shape and is made of alumina ceramic. Alumina ceramic has extremely high hardness and excellent wear resistance. The protective plate 6 is added to the outside of the rotary hook shell 1, which can effectively reduce the friction between the rotary hook and the external environment during use, thereby reducing the degree of wear. This can not only extend the service life of the rotary hook, but also reduce sewing quality problems caused by wear.

[0021] The protective plate 6 has multiple wear-resistant balls 13 embedded on its surface, and the wear-resistant balls 13 are rotatably connected to the protective plate 6. Adding wear-resistant balls 13 to the surface of the protective plate 6 changes sliding friction into rolling friction. The resistance of rolling friction is much smaller than that of sliding friction, which reduces vibration and deviation caused by sliding friction. This helps to improve the accuracy and stability of sewing, and ensures the uniformity and beauty of the stitches. Especially when sewing at high speed, the ball design can significantly improve the response speed and positioning accuracy of the rotary hook.

[0022] A static shuttle bed includes a shuttle bed body 8, which is located inside a rotary shuttle shell 1. Guide strips 9 are fixed on both the left and right sides of the surface of the shuttle bed body 8, and the guide strips 9 are slidably connected to the inner wall of the guide groove 7. A support frame 10 is provided on the front side of the shuttle bed body 8, and the support frame 10 is fixedly connected to the inner wall of the shuttle bed body 8. A guide plate 11 is provided above the support frame 10, and a guide groove 12 is provided on the surface of the guide plate 11.

[0023] A positioning block 14 is fixed to the top of the support frame 10, and a fixing groove is provided at the bottom of the guide plate 11. The positioning block 14 is engaged with the inner wall of the fixing groove. The operator can complete the disassembly and assembly of the guide plate 11 by pulling the guide plate 11. When the inner wall surface of the guide groove 12 is worn or damaged, the operator can quickly replace the guide plate 11, thereby improving work efficiency.

[0024] The front and rear sides of the inner wall of the guide groove 12 are both arc-shaped, and the surfaces of the guide plate 11 and the shuttle body 8 are coated with an anti-static coating. The anti-static coating can effectively reduce the accumulation of static electricity and prevent the shuttle body 8 from attracting surrounding thread ends during sewing machine processing, which would cause inconvenience to the subsequent cleaning work of the staff.

[0025] Working principle: When the rotary hook is in use, the guide plate 11 is located above the rotary hook. The rotary hook shell 1 rotates, and the protective plates 6 on both sides of the rotary hook shell 1 protect the surface of the rotary hook shell 1. After the protective plate 6 comes into contact with the fabric, the wear-resistant balls 13 on the surface of the protective plate 6 will roll, thereby changing the sliding friction into rolling friction, thus reducing the friction force and protecting the entire rotary hook shell 1. Under the guidance of the guide groove 12 on the surface of the guide plate 11, the sewing needle moves up and down at a certain speed and frequency, penetrates the fabric and guides the sewing thread for sewing. The guide plate 11 guides the sewing needle to avoid contact between the sewing needle and the shuttle tip 3 or the rotary hook plate 4 on the surface of the rotary hook shell 1, thus protecting the rotary hook.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A durable rotary hook device, characterized in that: The device includes a rotary shuttle shell (1), a rotary shuttle rod (2) fixed to the rear side of the rotary shuttle shell (1), a shuttle tip (3) fixed above the surface of the rotary shuttle shell (1), a rotary shuttle plate (4) fixed to the right side of the rotary shuttle shell (1), a hook line part (5) fixed to the right side of the front of the rotary shuttle shell (1), a protective plate (6) fixed to the left side surface of the rotary shuttle shell (1) and the surface of the rotary shuttle plate (4), and guide grooves (7) are provided on both sides of the inner wall of the rotary shuttle shell (1).

2. The durable rotary hook device according to claim 1, characterized in that: The protective plate (6) is set in a semi-circular arc shape, and the material of the protective plate (6) is alumina ceramic.

3. The durable rotary hook device according to claim 1, characterized in that: The surface of the protective plate (6) is embedded with a plurality of wear-resistant balls (13), and the wear-resistant balls (13) are rotatably connected to the protective plate (6).

4. A static shuttle bed, applied to the durable rotary shuttle device as described in claim 1, characterized in that: Includes a shuttle body (8), which is located inside the shuttle shell (1). Guide strips (9) are fixed on both the left and right sides of the surface of the shuttle body (8), and the guide strips (9) are slidably connected to the inner wall of the guide groove (7). A support frame (10) is provided on the front side of the shuttle body (8), and the support frame (10) is fixedly connected to the inner wall of the shuttle body (8). A guide plate (11) is provided above the support frame (10), and a guide groove (12) is opened on the surface of the guide plate (11).

5. A static shuttle bed according to claim 4, characterized in that: The top of the support frame (10) is fixed with a positioning block (14), and the bottom of the guide plate (11) is provided with a fixing groove, and the positioning block (14) is engaged with the inner wall of the fixing groove.

6. A static shuttle bed according to claim 4, characterized in that: The front and rear sides of the inner wall of the guide groove (12) are both arc-shaped, and the surfaces of the guide plate (11) and the shuttle body (8) are coated with an antistatic coating.

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