Wire core fixing mechanism for sewing

Abstract

The utility model discloses a sewing thread core fixing mechanism which comprises a machine body, a rotating mechanism is arranged in the machine body, the rotating mechanism comprises a rotating shaft, a guide hole is formed in the rotating shaft, a guide column is inserted in the guide hole, an arc end is arranged at the top end of the guide column, and a spring is arranged in the guide hole. A wire core body is arranged on one side of the machine body, a center hole is formed in the center of the wire core body, the rotating shaft is inserted into the center hole, and an arc groove matched with the arc end is formed in the inner wall of the center hole. According to the utility model, the end part of the guide pillar is matched with the arc groove through the elastic force of the spring, so that when the overload phenomenon occurs in the winding of the wire core, the guide pillar can be retracted into the guide hole, and the wire core can stop rotating at the moment, thereby preventing the breakage phenomenon caused by the overload of the winding.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a sewing thread core fixing mechanism. Background Technology

[0002] In the textile industry, the primary function of a sewing machine is to sew fabrics together, creating stitches to interweave or sew one or more layers of material together. Sewing machines can sew various fabrics, including cotton, linen, silk, wool, synthetic fibers, as well as products made of leather, plastic, and paper.

[0003] Sewing machines have a rotating mechanism for winding thread. During operation, the rotating shaft of this mechanism drives the thread core to wind the thread, thus forming the bobbin. However, in existing sewing machines, the rotating shaft of the mechanism is often firmly fixed to the thread core during bobbin winding. When the thread core is overloaded, the wound thread may break. Therefore, there is an urgent need to design a thread core fixing mechanism for sewing to solve the above problem. Utility Model Content

[0004] The purpose of this invention is to provide a sewing thread core fixing mechanism to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sewing thread core fixing mechanism includes a body, a rotating mechanism inside the body, the rotating mechanism including a rotating shaft, a guide hole inside the rotating shaft, a guide post inserted into the guide hole, a rounded end at the top of the guide post, a spring inside the guide hole, a thread core body on one side of the body, a central hole at the center of the thread core body, the rotating shaft inserted into the central hole, and a rounded groove on the inner wall of the central hole that matches the rounded end.

[0007] Furthermore, a limiting groove is formed on one side of the outer wall of the guide post, and a limiting post is fixed inside the rotating shaft, with one end of the limiting post extending into the limiting groove.

[0008] Furthermore, a fixing plate is fixed to one side of the outer wall of the rotating mechanism, and a pressure plate is integrally formed on one side of the fixing plate.

[0009] Furthermore, a nut is fixed to one outer wall of the fixing plate, and a compression screw is connected to the internal thread of the nut. One end of the compression screw abuts against the pressure plate.

[0010] Furthermore, a rotating block is integrally formed at the end of the extrusion screw away from the pressure plate, and the side wall of the rotating block is provided with anti-slip texture.

[0011] Furthermore, one end of the fixing plate and the pressure plate is provided with an elastic bend, and the pressure plate elastically abuts against the inside of the wire core body.

[0012] In the above technical solution, the sewing thread core fixing mechanism provided by this utility model has the following advantages: the end of the guide post is engaged with the arc groove by the elastic force of the spring, so that when the thread core is overloaded, the guide post will retract into the guide hole, and the thread core will stop rotating, thereby preventing the thread core from breaking due to overload; the pressure plate elastically squeezes the inside of the thread core, making the thread core tighter during winding, thereby improving the winding quality; and the rotating block rotates the pressing screw, so that the angle of the initial position of the pressure plate can be adjusted, thus adapting to different specifications of thread core bodies for winding. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a front view structural schematic diagram of an embodiment of a sewing thread core fixing mechanism of the present invention.

[0015] Figure 2 This is a schematic diagram of the pressure plate structure provided in an embodiment of a sewing thread core fixing mechanism of the present invention.

[0016] Figure 3 This is an enlarged structural diagram of point A provided for an embodiment of a sewing thread core fixing mechanism of the present invention.

[0017] Figure 4 This is an enlarged structural diagram of section B provided in an embodiment of a sewing thread core fixing mechanism of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Body, 2. Rotating mechanism, 3. Rotating shaft, 4. Core body, 5. Circular arc groove, 6. Guide hole, 7. Guide post, 8. Spring, 9. Limiting groove, 10. Limiting post, 11. Circular arc end, 12. Fixing plate, 13. Pressure plate, 14. Center hole, 15. Nut, 16. Extrusion screw, 17. Rotating block, 18. Anti-slip texture, 19. Elastic bend. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-4 As shown, the sewing thread core fixing mechanism provided in this embodiment of the utility model includes a body 1, a rotating mechanism 2 is provided inside the body 1, the rotating mechanism 2 includes a rotating shaft 3, a guide hole 6 is provided inside the rotating shaft 3, a guide post 7 is inserted into the guide hole 6, the top of the guide post 7 is provided with an arc end 11, a spring 8 is provided inside the guide hole 6, a thread core body 4 is provided on one side of the body 1, a center hole 14 is provided at the center of the thread core body 4, the rotating shaft 3 is inserted into the center hole 14, and an arc groove 5 adapted to the arc end 11 is provided on the inner wall of the center hole 14.

[0022] Specifically, in this embodiment, a sewing machine is included, which is a machine body 1. A rotating mechanism 2 is provided inside the machine body 1. The machine body 1 is a sewing machine of the prior art. The rotating mechanism 2 includes a rotating shaft 3. When it is necessary to wind the thread, the rotating shaft 3 can rotate. The working principle of the rotating mechanism 2 and the rotating shaft 3 of the rotating mechanism 2 are both of the prior art. A guide hole 6 is provided inside the rotating shaft 3. The guide hole 6 is along the diameter direction of the rotating shaft 3. A guide post 7 is inserted into the guide hole 6. The top end of the guide post 7 is provided with an arc end 11. A spring 8 is provided inside the guide hole 6. A thread core body 4 is provided on one side of the machine body 1. When working, the thread needs to be wound inside the thread core body 4. A center hole 14 is provided at the center of the thread core body 4. The rotating shaft 3 is inserted into the center hole 14. The inner wall of the center hole 14 is provided with an arc groove 5 that matches the arc end 11, so that the arc end 11 of the guide post 7 can cooperate with the arc groove 5 through elasticity, thereby causing the rotating shaft 3 to drive the thread core body 4 to rotate.

[0023] The present invention provides a sewing thread core fixing mechanism in which the end of the guide post 7 is engaged with the arc groove 5 by the elastic force of the spring 8, so that when the thread core is overloaded, the guide post 7 will retract into the guide hole 6, and the thread core will stop rotating, thereby preventing the thread from breaking due to overload.

[0024] In another embodiment of this utility model, a limiting groove 9 is formed on one side of the outer wall of the guide post 7, and a limiting post 10 is fixed inside the rotating shaft 3. One end of the limiting post 10 extends into the interior of the limiting groove 9. Through the limiting post 10 and the limiting groove 9, the guide post 7 will not detach from the guide hole 6. A fixing plate 12 is fixed on one side of the outer wall of the rotating mechanism 2. A pressure plate 13 is integrally formed on one side of the fixing plate 12. An elastic bend 19 is provided at one end of the fixing plate 12 and the pressure plate. The elastic bend 19 can make the pressure plate 13 have a certain elasticity, and the pressure plate 13 itself can also undergo elastic deformation. The pressure plate 13 elastically contacts the inside of the wire core body 4. The pressure of the pressure plate 13 on the wire core body 4 can make the winding tighter, and the surface of the pressure plate 13 is smooth, so that the wire core body 4 and the wire core body 4 can be tightly wound during the entire winding process. The friction between the pressure plates 13 is insufficient to prevent the core body 4 from rotating synchronously with the rotating shaft 3. The pressure plates 13 elastically compress the core, making the core more compact during winding and thus improving the winding quality. A nut 15 is fixed to one outer wall of the fixing plate 12. The internal thread of the nut 15 is connected to a pressing screw 16. One end of the pressing screw 16 abuts against the pressure plate 13. The pressing screw 16 is rotated by the rotating block 17, which allows the angle of the initial position of the pressure plate 13 to be adjusted, thus accommodating different specifications of core bodies 4 for winding. The end of the pressing screw away from the pressure plate 13 is integrally formed with a rotating block 17. The side wall of the rotating block 17 is provided with anti-slip texture 18. The rotating block 17 and the anti-slip texture 18 facilitate the rotation of the pressing screw 16.

[0025] Working principle: In use, the center hole 14 of the wire core body 4 is fitted onto the rotating shaft 3, and the arc groove 5 is aligned with the arc end 11 of the guide post 7. Then, the rotating shaft 3 of the rotating mechanism 2 drives the wire core body 4 to rotate, causing the wire core body 4 to wind the wire. The pressure of the pressure plate on the wire core body 4 makes the winding tighter. When the wire at the far end of the wire core body 4 is blocked from rotating due to winding, in order to prevent the wound wire from breaking due to overload, the guide post 7 will be squeezed into the guide hole 6 by the arc groove 5, and the rotating shaft 3 will not be able to drive the wire core body 4 to rotate, thus preventing the wound wire from breaking. At the same time, when the rotating shaft 3 cannot drive the wire core body 4 to rotate, the guide post 7 will align with the arc groove 5 once for every one rotation. At this time, the arc end 11 of the guide post 7 will hit the inner wall of the arc groove 5 through the elastic force of the spring 8, and make a "click-click-click" sound, thus serving as a reminder to the staff.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sewing thread core fixing mechanism, characterized in that, The utility model provides a kind of rotating mechanism, including body (1), the inside of the body (1) is provided with rotating mechanism (2), the inside of the rotating mechanism (2) is provided with rotating shaft (3), the inside of the rotating shaft (3) is provided with guide hole (6), guide column (7) is inserted in the inside of the guide hole (6), the top of the guide column (7) is provided with circular arc end (11), the inside of the guide hole (6) is provided with spring (8), one side of the body (1) is provided with wire core body (4), the center of the wire core body (4) is provided with center hole (14), the rotating shaft (3) is inserted in the inside of center hole (14), the inner wall of the center hole (14) is provided with the circular arc groove (5) of being suitable for circular arc end (11).

2. The thread spooling mechanism of claim 1, wherein: One side outer wall of the guide column (7) is provided with limiting slot (9), the inside of the rotating shaft (3) is fixed with limiting column (10), one end of the limiting column (10) extends to the inside of limiting slot (9).

3. The thread spooling mechanism of claim 1, wherein: The outer wall of one side of the rotating mechanism (2) is fixed with fixed plate (12), and the one side of the fixed plate (12) is integrally formed with pressing plate (13).

4. The thread spooling mechanism of claim 3, wherein: The outer wall of one side of the fixed plate (12) is fixed with nut (15), the inside of the nut (15) is threadedly connected with extrusion screw (16), and one end of the extrusion screw (16) abuts against the pressing plate (13).

5. The thread spooling mechanism of claim 4, wherein: The end of the extrusion screw away from the pressing plate (13) is integrally formed with rotating block (17), and the side wall of the rotating block (17) is provided with anti-skid lines (18).

6. The thread spooling mechanism of claim 3, wherein: The fixed plate (12) and the one end of the pressing plate are provided with elastic bend (19), and the pressing plate (13) elastically abuts against the inside of the wire core body (4).

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