A structure for controlling the cutting of threads of a motor

Abstract

This utility model discloses a motor-controlled thread-cutting structure, comprising a platform, a base, a flat blade, and a movable rod. The platform is located on the sewing machine, and the base is fixed to the inner side of the platform. The flat blade is rotatably connected to the platform and is connected to a liner. The movable rod rotates through the base, and the base is equipped with a power motor and a pad. A guide rod is movably inserted through the pad. The power motor is connected to the guide rod through a transmission assembly. The upper end of the guide rod is connected to the rear end of the movable rod through a first traction rod to drive the movable rod to reciprocate. A second traction rod is provided at the rear end of the movable rod, and the second traction rod extends and is hinged to a pull rod, which extends and is hinged to the liner. The power motor drives the flat blade to move through the transmission assembly and the movable rod, resulting in a large thread-cutting force. The thread-cutting signal is no longer affected by the lower shaft and cylinder of the sewing machine. The power motor is controlled independently, resulting in good stability and a good thread-cutting effect.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a structure for motor-controlled thread cutting. Background Technology

[0002] Sewing machines are generally equipped with an automatic thread-cutting mechanism. During the sewing process, the automatic thread-cutting mechanism can be used to cut the thread and separate it from the fabric.

[0003] The existing thread-cutting structure of sewing machines uses the lower shaft of the sewing machine as power, and drives the cutter through a cam, connecting rod and other structures. This has low stability and often results in the thread not being cut. Therefore, this utility model proposes a motor-controlled thread-cutting structure that can solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a structure for motor-controlled wire cutting to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a structure for motor-controlled thread cutting, comprising a table, a base, a flat blade, and a movable rod, wherein the table is located on a sewing machine, the base is fixedly connected to the inner side of the table, the flat blade is rotatably connected to the table, and the flat blade is connected to a liner strip;

[0006] The movable rod rotates through the base, which is equipped with a power motor and a pad. A guide rod is movably inserted through the pad. The power motor is connected to the guide rod through a transmission assembly. The upper end of the guide rod is connected to the rear end of the movable rod through a first traction rod to drive the movable rod to reciprocate. A second traction rod is provided at the rear end of the movable rod. The second traction rod extends and is hinged to a pull rod. The pull rod extends and is hinged to the lining strip.

[0007] As a preferred technical solution, the flat blade has a concave tangent.

[0008] As a preferred technical solution, a recessed groove is formed on the inner side of the platform, and the flat blade has a gap with the inner wall of the recessed groove.

[0009] As a preferred technical solution, the transmission assembly includes a crossbar mounted on the output shaft of the power motor, the crossbar being hinged to a lifting rod, and the lifting rod extending and hinged to the lower end of the guide rod.

[0010] As a preferred technical solution, the base has blocks on both sides, and an isolation zone is formed between the two sets of blocks.

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

[0012] The power motor drives the flat blade through the transmission components and the movable rod, resulting in a large thread-cutting force. The thread-cutting signal is no longer affected by the lower shaft and cylinder of the sewing machine. The power motor is controlled independently, which ensures good stability and excellent thread-cutting effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the connection between the integral flat blade and the table plate of this utility model;

[0015] Figure 3 This is a schematic diagram showing the connection between the power motor and the guide rod via the transmission assembly of this utility model;

[0016] In the diagram: 10. Platform; 11. Settling tank; 20. Base; 21. Stop block; 22. Power motor; 23. Pad block; 24. Guide rod; 25. Transmission assembly; 251. Crossbar; 252. Lifting rod; 30. Flat blade; 301. Cutting edge; 31. Liner strip; 32. Pull rod; 40. Movable rod; 41. First traction rod; 42. Second traction rod. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-3

[0019] Example 1

[0020] A structure for motor-controlled wire cutting is provided:

[0021] Please see Figure 1 The sewing machine has a table 10 located on the sewing machine, a base 20 fixed to the inside of the table 10, a flat blade 30 rotatably connected to the table 10, and a lining strip 31 connected to the flat blade 30. When the sewing machine is working, the needle drives the thread to move up and down on the table 10 to sew.

[0022] Please see Figure 1 , Figure 2The movable rod 40 rotates through the base 20. The base 20 is equipped with a power motor 22 and a pad 23. The pad 23 is movably connected to the base 20. The pad 23 is movably connected to the guide rod 24. The power motor 22 is connected to the guide rod 24 through the transmission assembly 25. The upper end of the guide rod 24 is connected to the rear end of the movable rod 40 through the first traction rod 41, which is used to drive the movable rod 40 to reciprocate. The rear end of the movable rod 40 is provided with a second traction rod 42. The second traction rod 42 extends and is hinged to a pull rod 32. The pull rod 32 extends and is hinged to the liner 31.

[0023] Please see Figure 3 The transmission assembly 25 includes a crossbar 251 mounted on the output shaft of the power motor 22, and a lifting rod 252 is hinged to the crossbar 251. The lifting rod 252 extends and is hinged to the lower end of the guide rod 24.

[0024] When the output shaft of the power motor 22 rotates, it drives the crossbar 251 to rotate. The crossbar 251 drives the lifting rod 252 to drive the guide rod 24 to move vertically back and forth. The guide rod 24 drives the movable rod 40 to rotate back and forth through the first traction rod 41. The movable rod 40 pulls the liner 31 to move through the second traction rod 42 and the pull rod 32, thereby driving the flat knife 30 to move to cut the thread.

[0025] Example 2

[0026] A structure for motor-controlled wire cutting is provided:

[0027] Please see Figure 1 The sewing machine has a table 10 located on the sewing machine, a base 20 fixed to the inside of the table 10, a flat blade 30 rotatably connected to the table 10, and a lining strip 31 connected to the flat blade 30. When the sewing machine is working, the needle drives the thread to move up and down on the table 10 to sew.

[0028] Please see Figure 1 , Figure 2 The movable rod 40 rotates through the base 20. The base 20 is equipped with a power motor 22 and a pad 23. The pad 23 is movably connected to the base 20. The pad 23 is movably connected to the guide rod 24. The power motor 22 is connected to the guide rod 24 through the transmission assembly 25. The upper end of the guide rod 24 is connected to the rear end of the movable rod 40 through the first traction rod 41, which is used to drive the movable rod 40 to reciprocate. The rear end of the movable rod 40 is provided with a second traction rod 42. The second traction rod 42 extends and is hinged to a pull rod 32. The pull rod 32 extends and is hinged to the liner 31.

[0029] The transmission assembly 25 includes a crossbar 251 mounted on the output shaft of the power motor 22, and a lifting rod 252 is hinged to the crossbar 251. The lifting rod 252 extends and is hinged to the lower end of the guide rod 24.

[0030] Please see Figure 3When the output shaft of the power motor 22 rotates, it drives the crossbar 251 to rotate. The crossbar 251 drives the lifting rod 252 to drive the guide rod 24 to move vertically back and forth. The guide rod 24 drives the movable rod 40 to rotate back and forth through the first traction rod 41. The movable rod 40 pulls the liner 31 to move through the second traction rod 42 and the pull rod 32, thereby driving the flat knife 30 to move to cut the thread. The flat knife 30 has a concave cutting edge 301 to improve the thread cutting effect.

[0031] Please see Figure 2 The inner side of the platform 10 is provided with a groove 11, and there is a gap between the flat blade 30 and the inner wall of the groove 11 to avoid frictional resistance between the flat blade 30 and the inner side of the platform 10 when the flat blade 30 moves, so that the movement of the flat blade 30 is smooth.

[0032] Please see Figure 1 , Figure 3 The base 20 has blocks 21 on both sides, and an isolation zone is formed between the two sets of blocks 21. The isolation zone plays a role in isolating and protecting the flat blade 30.

[0033] In summary, the power motor 22 drives the flat blade 30 to move through the transmission assembly 25 and the movable rod 40, resulting in a large thread-cutting force. The thread-cutting signal is no longer affected by the lower shaft and cylinder of the sewing machine. The power motor 22 is controlled independently, resulting in good stability and a good thread-cutting effect.

[0034] 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 structure for motor-controlled wire cutting, characterized in that, It includes a table (10), a base (20), a flat blade (30) and a movable rod (40). The table (10) is located on the sewing machine. The base (20) is fixed to the inside of the table (10). The flat blade (30) is rotatably connected to the table (10). The flat blade (30) is connected to a lining strip (31). The movable rod (40) rotates through the base (20), the base (20) is equipped with a power motor (22) and a pad (23), the pad (23) is movably connected to a guide rod (24), the power motor (22) is connected to the guide rod (24) through a transmission assembly (25), the upper end of the guide rod (24) is connected to the rear end of the movable rod (40) through a first traction rod (41) to drive the movable rod (40) to reciprocate; The rear end of the movable rod (40) is provided with a second traction rod (42), the second traction rod (42) extends and is hinged to a pull rod (32), the pull rod (32) extends and is hinged to the liner (31).

2. The structure for motor-controlled wire cutting according to claim 1, characterized in that, The flat blade (30) has a concave tangent (301).

3. The structure for motor-controlled wire cutting according to claim 1, characterized in that, The inner side of the platform (10) is provided with a sink groove (11), and the flat knife (30) has a gap with the inner wall of the sink groove (11).

4. The structure for motor-controlled wire cutting according to claim 1, characterized in that, The transmission assembly (25) includes a crossbar (251) mounted on the output shaft of the power motor (22), and a lifting rod (252) is hinged to the crossbar (251). The lifting rod (252) extends and is hinged to the lower end of the guide rod (24).

5. The structure for motor-controlled wire cutting according to claim 1, characterized in that, The base (20) has blocks (21) on both sides, and an isolation zone is formed between the two sets of blocks (21).

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