Thread clamping mechanism of sewing machine

Abstract

The utility model relates to the technical field of sewing machines, and discloses a sewing machine thread clamping mechanism which comprises a machine base, a sewing machine body is arranged on the upper portion of the machine base, a positioning rod is arranged on the left side of the upper portion of the sewing machine body, a bottom ring is arranged at the lower end of the outer side of the positioning rod, and a positioning ring is rotationally connected to the middle of the outer side of the positioning rod. A positioning ring is arranged on the upper portion of the sewing machine body, a plurality of grooves are formed in the positioning ring, fixing mechanisms are arranged in the grooves, a connecting rod is arranged on the right side of the upper portion of the sewing machine body, a sliding sleeve is arranged on the connecting rod in a sliding mode, a thread guiding mechanism is arranged on one side of the sliding sleeve, each fixing mechanism comprises a spring, a connecting block and an L-shaped positioning block, and the springs are arranged in the grooves; when the thread feeding device is used, a thread coil can be positioned on the positioning rod, and meanwhile, a thread can be guided when the thread coil rotates to feed the thread, so that the thread is not easy to loosen when the thread is released, and the influence on sewing of clothes is not easy to generate.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a thread clamping mechanism for a sewing machine. Background Art

[0002] A sewing machine is a mechanical device used to sew fabrics, leather and other materials. It uses a needle and thread that moves up and down to connect the edge of the material or two pieces of material together to form a firm seam. It is widely used in households, clothing manufacturing and other related industries.

[0003] A sewing machine generally consists of four parts: a machine head, a machine base, a transmission and accessories. The machine head is the main part of the sewing machine. When using a sewing machine, a thread coil is usually placed on a positioning rod at the upper end of the machine head, and then the thread is fed through the thread coil when sewing clothes. However, since the thread coil is directly placed on the positioning rod, the thread is always in a relatively loose state when feeding the thread to sew clothes, which is easy to affect the sewing of clothes. Therefore, those skilled in the art provide a thread clamping mechanism for a sewing machine to solve the problems raised in the above background technology. Utility Model Content

[0004] In order to solve the problem that the thread coil is directly placed on the positioning rod, so that when the thread is fed to sew clothes, the thread is always in a relatively loose state, which is easy to affect the sewing of clothes, the utility model provides a sewing machine thread clamping mechanism.

[0005] The utility model provides a sewing machine thread clamping mechanism adopts the following technical scheme: a sewing machine thread clamping mechanism comprises a machine base, a sewing machine body is arranged on the upper part of the machine base, a positioning rod is arranged on the upper left side of the sewing machine body, a bottom ring is arranged on the outer lower end of the positioning rod, a positioning ring is rotatably connected to the middle part of the outer side of the positioning rod, a plurality of grooves are opened on the positioning ring, a fixing mechanism is arranged in the groove, a connecting rod is arranged on the upper right side of the sewing machine body, a sliding sleeve is slidably arranged on the connecting rod, and a guide wire mechanism is arranged on one side of the sliding sleeve.

[0006] The fixing mechanism includes a spring, a connecting block and an L-shaped positioning block, the spring is arranged in the groove, the connecting block is arranged at one end of the spring away from the inner wall of the groove, the L-shaped positioning block is arranged at one end of the connecting block away from the spring, and one end of the L-shaped positioning block passes through the groove.

[0007] Preferably, the wire guide mechanism comprises a connecting frame and a wire guide wheel, the connecting frame is arranged on the outside of the sliding sleeve, and the wire guide wheel is rotatably connected to the inside of the connecting frame.

[0008] Preferably, a connecting ring is provided on the inner side of the bottom ring, an outer lower end of the positioning rod is provided with an external thread, and the connecting ring is threadably connected to the positioning rod via the external thread.

[0009] Preferably, an adjusting bolt is threadedly connected to the right side of the sliding sleeve, and one end of the adjusting bolt penetrates into the interior of the sliding sleeve and abuts against the connecting rod.

[0010] Preferably, upper ends of the three L-shaped positioning blocks that are away from each other are all sloped.

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

[0012] The utility model is provided with a positioning ring, a fixing mechanism, a sliding sleeve, a guide wire mechanism and an adjusting bolt. When the wire reel is sleeved on the positioning rod, the wire reel can be fixed by the fixing mechanism, so that the wire reel is more stable after being sleeved on the positioning rod. Then, the wire on the wire reel passes through the inner side of the connecting frame, and the use height of the guide wire wheel can be adjusted by the adjusting bolt, so that the wire contacts the guide wire wheel, so that the wire is not easy to become loose when the wire is released, and thus it is not easy to affect the sewing of clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 This is a cross-sectional view of the connection structure between the positioning ring and the positioning rod in the utility model;

[0015] Figure 3 This is a schematic diagram of the connection structure between the sliding sleeve and the connecting rod in the utility model;

[0016] Figure 4 It is a structural schematic diagram of the wire mechanism in the utility model;

[0017] Figure 5 for Figure 2 A magnified schematic diagram of the structure of part A.

[0018] Explanation of the accompanying drawings: 1. machine base; 2. sewing machine body; 3. positioning rod; 4. bottom ring; 5. positioning ring; 6. groove; 7. fixing mechanism; 701. spring; 702. connecting block; 703. L-shaped positioning block; 8. connecting rod; 9. sliding sleeve; 10. wire guide mechanism; 101. connecting frame; 102. wire guide wheel; 11. connecting ring; 12. adjusting bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model discloses a thread clamping mechanism for a sewing machine. Figure 1-5 A thread clamping mechanism for a sewing machine comprises a machine base 1, a sewing machine body 2 is arranged on the upper part of the machine base 1, a positioning rod 3 is arranged on the upper left side of the sewing machine body 2, a bottom ring 4 is arranged on the lower end of the outer side of the positioning rod 3, a positioning ring 5 is rotatably connected to the middle part of the outer side of the positioning rod 3, a plurality of grooves 6 are opened on the positioning ring 5, a fixing mechanism 7 is arranged in the groove 6, a connecting rod 8 is arranged on the upper right side of the sewing machine body 2, a sliding sleeve 9 is slidably arranged on the connecting rod 8, and a guide wire mechanism 10 is arranged on one side of the sliding sleeve 9;

[0021] The fixing mechanism 7 includes a spring 701, a connecting block 702 and an L-shaped positioning block 703. The spring 701 is arranged in the groove 6, the connecting block 702 is arranged at one end of the spring 701 away from the inner wall of the groove 6, the L-shaped positioning block 703 is arranged at one end of the connecting block 702 away from the spring 701, and one end of the L-shaped positioning block 703 passes through the groove 6.

[0022] By adopting the above technical solution, when the wire coil is inserted on the positioning rod 3, the elastic force of the spring 701 allows the L-shaped positioning block 703 to fit tightly against the inner wall of the wire coil, thereby fixing the wire coil and making the wire coil more stable when placed on the positioning rod 3.

[0023] Reference Figure 3 and Figure 4 The wire guide mechanism 10 includes a connecting frame 101 and a wire guide wheel 102. The connecting frame 101 is arranged on the outer side of the sliding sleeve 9, and the wire guide wheel 102 is rotatably connected to the inner side of the connecting frame 101; an adjusting bolt 12 is threadedly connected to the right side of the sliding sleeve 9, and one end of the adjusting bolt 12 penetrates into the interior of the sliding sleeve 9 and abuts against the connecting rod 8.

[0024] By adopting the above technical solution, when paying out the line after fixing the line reel on the positioning rod 3, the line can be passed through the connecting frame 101, and then the use position of the sliding sleeve 9 can be adjusted by adjusting the bolt 12, so that the line contacts the wire wheel 102, and the line is not easy to become loose when the line reel is rotated to pay out the line.

[0025] Reference Figure 2 A connecting ring 11 is arranged on the inner side of the bottom ring 4, an outer lower end of the positioning rod 3 is provided with an external thread, and the connecting ring 11 is threadedly connected to the positioning rod 3 through the external thread.

[0026] By adopting the above technical solution, when the bottom ring 4 is rotated through the connecting ring 11, the use height of the bottom ring 4 on the positioning rod 3 can be adjusted, so the position of the wire coil placed on the positioning rod 3 can be adjusted, further improving the wire feeding effect of the wire coil.

[0027] Reference Figure 5 The upper ends of the three L-shaped positioning blocks 703 that are away from each other are all sloped.

[0028] By adopting the above technical solution, the upper end of the L-shaped positioning block 703 is sloped, so that the wire coil can move downward more easily after contacting the L-shaped positioning block 703 .

[0029] Working principle: When the utility model is used, the wire coil is first inserted on the positioning rod 3. As the wire coil slowly moves downward, it will contact the L-shaped positioning block 703 and squeeze the L-shaped positioning block 703. The L-shaped positioning block 703 is squeezed and pushes the connecting block 702 to move and squeeze the spring 701. Then, after the bottom end of the wire coil contacts the upper end of the bottom ring 4, the pressing of the wire coil is stopped. At this time, the elastic force of the spring 701 makes the L-shaped positioning block 703 close to the inner wall of the wire coil, so that the wire coil can be fixed, so that the wire coil is placed on the positioning rod 3. The stability is better when the thread is put up, and then the thread on the thread reel can be passed through the inner side of the connecting frame 101, and then the adjusting bolt 12 can be turned to adjust the use height of the wire wheel 102, so that the thread is in contact with the wire wheel 102, so that in the process of sewing clothes, the thread is not easy to get loose when the thread reel is rotated to pay out the thread, and thus it is not easy to affect the sewing of clothes. At the same time, by rotating the bottom ring 4, its use height on the positioning rod 3 can be adjusted, so that the position of the thread reel placed on the positioning rod 3 can be adjusted, which further improves the wire feeding effect of the thread reel.

[0030] When the utility model is in use, the thread reel can be positioned on the positioning rod 3, and the thread can be guided when the thread reel rotates to feed the thread, so that the thread is not easy to become loose when releasing the thread, and it is not easy to affect the sewing of clothes.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thread clamping mechanism for a sewing machine, comprising a machine base (1), characterized in that: A sewing machine body (2) is arranged on the upper part of the machine base (1), a positioning rod (3) is arranged on the upper left side of the sewing machine body (2), a bottom ring (4) is arranged on the lower end of the outer side of the positioning rod (3), a positioning ring (5) is rotatably connected to the middle part of the outer side of the positioning rod (3), a plurality of grooves (6) are arranged on the positioning ring (5), a fixing mechanism (7) is arranged in the grooves (6), a connecting rod (8) is arranged on the upper right side of the sewing machine body (2), a sliding sleeve (9) is slidably arranged on the connecting rod (8), and a guide wire mechanism (10) is arranged on one side of the sliding sleeve (9); The fixing mechanism (7) comprises a spring (701), a connecting block (702) and an L-shaped positioning block (703); the spring (701) is arranged in the groove (6); the connecting block (702) is arranged at one end of the spring (701) away from the inner wall of the groove (6); the L-shaped positioning block (703) is arranged at one end of the connecting block (702) away from the spring (701); and one end of the L-shaped positioning block (703) passes through the groove (6).

2. A thread clamping mechanism for a sewing machine according to claim 1, characterized in that: The wire guide mechanism (10) comprises a connection frame (101) and a wire guide wheel (102); the connection frame (101) is arranged on the outside of the sliding sleeve (9); and the wire guide wheel (102) is rotatably connected to the inside of the connection frame (101).

3. A thread clamping mechanism for a sewing machine according to claim 1, characterized in that: A connecting ring (11) is arranged on the inner side of the bottom ring (4), an outer lower end of the positioning rod (3) is provided with an external thread, and the connecting ring (11) is threadedly connected to the positioning rod (3) via the external thread.

4. A thread clamping mechanism for a sewing machine according to claim 1, characterized in that: The right side of the sliding sleeve (9) is threadedly connected with an adjusting bolt (12), and one end of the adjusting bolt (12) penetrates into the interior of the sliding sleeve (9) and abuts against the connecting rod (8).

5. The thread clamping mechanism for a sewing machine according to claim 1, characterized in that: The upper ends of the three L-shaped positioning blocks (703) that are away from each other are all in a slope shape.

Images