Thread drawing device of sewing machine
By designing a thread extraction device that cooperates with the electromagnet and the movable thread plate, the problem of bird's nest thread ball caused by improper coordination of the sewing machine's thread clamping device is solved, and efficient thread extraction and beautiful sewing materials of the sewing machine are achieved.
Patent Information
- Application Number
- CN202422340077.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The thread clamping device of existing sewing machines cannot be effectively coordinated during rapid work, resulting in the thread head being transferred to the bottom of the sewing material to form a bird's nest thread ball, affecting the beauty of the sewing material.
A wire drawing device including an electromagnet, a mounting bracket, a movable wire plate, a hinge column, a base plate and a hinge spring is designed. Through the cooperation of the electromagnet and the movable wire plate, the elastic force of the hinge spring is used to achieve clamping and release of the seam, and the fast movement of the sewing machine is coordinated.
Effectively prevent the head of the bird's nest, ensure the smooth progress of the thread drawing of the sewing machine, and improve the working efficiency of the sewing machine and the aesthetics of the sewing materials.
Smart Images
Figure CN223088065U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewing machine thread extraction, in particular to a thread extraction device for a sewing machine. Background Technique
[0002] When a sewing machine starts sewing, a certain length of thread end needs to be left at the eye of the sewing needle to ensure that the thread end will not come out of the eye of the needle during starting sewing. However, a certain length of thread end on the eye of the sewing needle will remain at the initial sewing position of the sewing material during starting sewing, affecting the appearance of the sewing material.
[0003] The traditional method is to manually hold the thread end when starting sewing to make the thread end stay on the sewing material. After the sewing work is finished, the thread end is manually trimmed. At present, the more commonly used processing method is to set an electronic thread clamp in the thread passing channel of the machine head. When starting sewing, the electronic thread clamp acts to clamp the sewing thread for a certain time, so that the suspended thread end is brought under the sewing material during starting sewing, and by clamping the sewing thread, the amount of thread supplied by pulling back the upper thread of the sewing needle during starting sewing is used to supply the thread, and finally the length of the thread end under the sewing material is shortened. However, this method transfers the thread end under the sewing material, resulting in the problem of a bird's nest thread ball. Therefore, a sliding thread cutting device is configured and set in cooperation with the thread clamping device. During starting sewing, the two devices are used to cut the thread end against the edge of the presser foot.
[0004] Through the above description, it can be known that the thread clamping device is a very important part. Due to the fast operation of the sewing machine, the existing design of the thread clamping device has defects and cannot cooperate well, so further improvement is needed. Summary of the Invention
[0005] The purpose of the utility model is to solve the problems put forward in the above background technique and provide a thread extraction device for a sewing machine.
[0006] To solve the above technical problems, the technical solution of the utility model is: a thread extraction device for a sewing machine, including a machine head, a thread extraction device is arranged on the machine head, the thread extraction device includes an electromagnet, a mounting bracket, a movable wire board, a hinge column, a base plate, and a hinge spring. The electromagnet is installed on the mounting bracket, and the mounting bracket is fixed on the base plate. One end of the movable wire board is rotatably installed on the base plate through the hinge column, and the other end corresponds to the electromagnet. A thread passing hole for the sewing thread to pass through is also arranged on the movable wire board. The hinge spring is sleeved on the hinge column, one end of the hinge spring abuts against the movable wire board, and the other end abuts against the mounting bracket. When the end of the electromagnet abuts against the movable wire board, the elastic force of the hinge spring acts on the movable wire board, so that the movable wire board and the end of the electromagnet form an abutting and pressing, so that the end of the electromagnet and the movable wire board cooperate to clamp the sewing thread.
[0007] In the above-mentioned thread-drawing device of a sewing machine, a positioning end corresponding to the end of the movable thread board is provided on the mounting bracket. The end of the movable thread board forms a positioning abutment with the positioning end under the elastic force of the hinge spring, and at the same time, there is a gap between the movable thread board and the end of the electromagnet in the normal use state of the sewing thread.
[0008] In the above-mentioned thread-drawing device of a sewing machine, a push rod is provided on the electromagnet, and a pressing end corresponding to the movable thread board is provided at the end of the push rod.
[0009] In the above-mentioned thread-drawing device of a sewing machine, the movable thread board is provided with a connection end, and a rotating hole is provided at the connection end. The hinge column passes through the rotating hole of the connection end, so that the movable thread board is rotatably connected to the base plate.
[0010] In the above-mentioned thread-drawing device of a sewing machine, a support boss is provided on the base plate, and the support boss supports the connection end of the movable thread board.
[0011] The utility model has the following beneficial effects:
[0012] When the thread-drawing device designed by the utility model performs thread-drawing on the sewing machine, it can cooperate well with the sewing machine to work quickly, and timely cooperate with other devices to press the thread, so as to facilitate the sewing machine to perform the thread-drawing action better, solve the technical defects existing in the existing structure, and effectively prevent the phenomenon of bird's nest thread ends. Description of the Drawings
[0013] Figure 1 、 Figure 2 are three-dimensional views of the thread-drawing device of the utility model in two different directions;
[0014] Figure 3 is an exploded view of the thread-drawing device of the utility model
[0015] Figure 4 is a three-dimensional view of the utility model. Detailed Embodiment
[0016] The utility model will be further described in conjunction with the drawings.
[0017] Please refer to Figures 1 to 4 , the utility model provides a thread-drawing device for a sewing machine, including a machine head 1, a thread-drawing device 15 is provided on the machine head 1, and the thread-drawing device 15 includes an electromagnet 2, a mounting bracket 3, a movable thread board 4, a hinge column 5, a base plate 6, and a hinge spring 7.
[0018] The electromagnet 2 is installed on the mounting bracket 3, and the mounting bracket 3 is fixed on the base plate 6. One end of the movable wire board 4 is rotatably installed on the base plate 6 through the hinge post 5, and the other end corresponds to the electromagnet 2. A threading hole 8 for the sewing thread to pass through is provided on the movable wire board 4. Specifically, the movable wire board 4 is provided with a connection end 12, and the connection end 12 is provided with a rotation hole 13. The hinge post 5 passes through the rotation hole 13 of the connection end 12, so that the movable wire board 4 forms a rotational connection with the base plate 6.
[0019] The hinge spring 7 is sleeved on the hinge post 5. One end of the hinge spring 7 abuts against the movable wire board 4, and the other end abuts against the mounting bracket 3. A positioning end head 9 for abutting against the end of the movable wire board 4 is provided on the mounting bracket 3. The end of the movable wire board 4 forms a positioning abutment with the positioning end head 9 under the elastic force of the hinge spring 7, and at the same time, there is a gap between the end of the movable wire board 4 and the end of the electromagnet 2 in the normal use state of the sewing thread.
[0020] When the wire pressing action needs to be cooperated, the end of the electromagnet 2 abuts against the movable wire board 4, and the elastic force of the hinge spring 7 acts on the movable wire board 4, so that the movable wire board 4 forms an abutting and pressing with the end of the electromagnet 2, thereby clamping the sewing thread by the cooperation of the end of the electromagnet 2 and the movable wire board 4.
[0021] Further, a push rod 10 is provided on the electromagnet 2, and a pressing end head 11 corresponding to the movable wire board 4 is provided at the end of the push rod 10.
[0022] Further, a support boss 14 is provided on the base plate 6, and the support boss 14 supports the connection end of the movable wire board 4.
[0023] The above has introduced in detail a thread extraction device of a sewing machine provided by an embodiment of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution disclosed by the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. A thread extraction device for a sewing machine, comprising a machine head (1), characterized in that: A thread drawing device (15) is provided on the machine head (1). The thread drawing device (15) includes an electromagnet (2), a mounting bracket (3), a movable wire board (4), a hinge column (5), a base plate (6), and a hinge spring (7). The electromagnet (2) is mounted on the mounting bracket (3), and the mounting bracket is fixed on the base plate (6). One end of the movable wire board (4) is rotatably mounted on the base plate (6) through the hinge column (5), and the other end corresponds to the electromagnet (2). A threading hole (8) for the sewing thread to pass through is provided on the movable wire board (4). The hinge spring (7) is sleeved on the hinge column (5). One end of the hinge spring (7) abuts against the movable wire board (4), and the other end abuts against the mounting bracket (3). When the end of the electromagnet (2) abuts against the movable wire board (4), the elastic force of the hinge spring (7) acts on the movable wire board (4) so that the movable wire board (4) forms an abutting and pressing against the end of the electromagnet (2), thereby enabling the end of the electromagnet (2) and the movable wire board (4) to cooperate to clamp the sewing thread.
2. The thread extraction device of a sewing machine according to claim 1, characterized in that: A positioning end (9) that abuts against the end of the movable wire board (4) is provided on the mounting bracket (3). The end of the movable wire board (4) forms a positioning abutment with the positioning end (9) under the elastic force of the hinge spring (7), and there is a gap between the movable wire board (4) and the end of the electromagnet (2) in the normal use state of the sewing thread.
3. The thread extraction device of a sewing machine according to claim 1 or 2, characterized in that: A push rod (10) is provided on the electromagnet (2), and a pressing end (11) corresponding to the movable wire board (4) is provided at the end of the push rod (10).
4. The thread extraction device of a sewing machine according to claim 3, characterized in that: A connection end (12) is provided on the movable wire board (4), and a rotation hole (13) is provided on the connection end (12). The hinge column (5) passes through the rotation hole (13) of the connection end (12) so that the movable wire board (4) forms a rotational connection with the base plate (6).
5. The thread extraction device of a sewing machine according to claim 4, characterized in that: A support boss (14) is provided on the base plate (6), and the support boss (14) supports the connection end of the movable wire board (4).