Electric thread trimming structure for sewing equipment

Abstract

The utility model relates to the technical field of sewing equipment, and particularly discloses an electric thread trimming structure for sewing equipment, which comprises a driving part, a transmission component and a thread trimming unit, the free end of the driving part is connected with the transmission assembly, the transmission assembly comprises a first gear and a second gear meshed with the first gear to rotate, the second gear is fixedly installed on the thread trimming unit, the driving part drives the first gear to rotate to drive the second gear to rotate, and the second gear rotates to drive the thread trimming unit to conduct thread trimming operation. Through the design of the electric driving piece and the transmission assembly, automatic operation of thread trimming is achieved, the thread trimming efficiency in the sewing process is greatly improved, due to the fact that a mechanical transmission (such as gear meshing) mode is adopted, movement of the thread trimming unit can be accurately controlled, the accuracy and stability of thread trimming operation are ensured, and the thread trimming efficiency is improved. Meanwhile, the design mechanism is simple, and the production cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of sewing equipment technology, and in particular discloses an electric thread-cutting structure for sewing equipment. Background Technology

[0002] Manual thread cutting is not only time-consuming but also easily affects the neatness of the sewing thread and the smoothness of the operation. To improve production efficiency, modern sewing equipment is gradually developing towards automation and intelligence. Existing electric thread cutting equipment mainly uses a motor to drive a transmission component to achieve the cutting action between the cutter and the stationary blade to cut the thread. However, traditional structures generally have the following problems: the drive transmission system of existing electric thread cutting equipment has a complex mechanical structure, which is prone to wear and loosening, resulting in reduced thread cutting accuracy and shortened equipment life. At the same time, the cutter is prone to accumulating thread ends and fabric residue, causing uneven thread cutting and requiring frequent cleaning and maintenance. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an electric thread-cutting structure for sewing equipment.

[0004] To achieve the above objectives, this utility model provides an electric thread-cutting structure for sewing equipment, comprising a drive unit, a transmission assembly, and a thread-cutting unit. The free end of the drive unit is connected to the transmission assembly, which includes a first gear and a second gear that meshes with and rotates with the first gear. The second gear is fixedly mounted on the thread-cutting unit. The drive unit drives the first gear to rotate, thereby driving the second gear to rotate. The rotation of the second gear drives the thread-cutting unit to perform thread-cutting operations.

[0005] The wire-cutting structure also includes a support frame, and the drive unit, transmission components, and wire-cutting unit are mounted on the support frame via fasteners.

[0006] The wire cutting structure also includes a fixed blade mounted on a support frame, and the wire cutting unit performs wire cutting operations by moving closer to or further away from the fixed blade via a drive component.

[0007] The wire cutting unit includes a rotating rod and a fixed rod. The fixed rod is fixedly mounted on the support frame. One end of the rotating rod is connected to the free end of the drive component, and the end of the rotating rod away from the drive component is hinged to the fixed rod. The fixed rod is equipped with a cutter. The drive component drives the rotating rod to rotate, thereby causing the cutter on the fixed rod to rotate to move closer to or away from the fixed blade to perform the wire cutting operation.

[0008] The cutter has a hook notch that allows an external needle to pass through, and a thread receiving groove is provided on the surface of the cutter facing the fixed blade. The end of the thread receiving groove away from the hook notch is provided with a first cutting edge that engages with the fixed blade.

[0009] The free end of the fixed blade is provided with a second tangential cutting edge, which engages with the first tangential cutting edge.

[0010] The driving component is a DC motor or a stepper motor.

[0011] The fixed rod is provided with a mounting base, which includes a main body and a mounting part protruding from the main body. The mounting part is provided with a mounting hole, and the cutter is provided with a threaded hole that mates with the mounting hole on the mounting part. External fasteners pass through the mounting hole on the mounting part and the threaded hole on the cutter in sequence to install the cutter on the mounting part.

[0012] The fixed rod is equipped with a shock-absorbing pad, which is used to absorb and disperse the vibration generated during the wire cutting operation.

[0013] The cutter is coated with an anti-adhesion coating, which is evenly applied to reduce the adhesion of thread ends and fabric residue to the cutter during sewing. The anti-adhesion coating can be made of materials such as polytetrafluoroethylene (PTFE), molybdenum disulfide (MoS2), ceramic materials, diamond-like carbon (DLC) coating, or polyimide (PI). These materials possess excellent anti-adhesion, abrasion resistance, and self-lubricating properties, reducing the adhesion of thread ends and fabric residue. Among these, PTFE coating offers high cost-effectiveness and is suitable for general needs; ceramic and DLC coatings are more suitable for high-intensity or high-precision applications; MoS2 coating is suitable for high-speed operation, while PI coating is heat-resistant and easy to apply. The specific choice should be based on a comprehensive consideration of the equipment's operating conditions and cost requirements.

[0014] The driving component is a DC motor: DC motor drives offer advantages such as a wide speed range and simple control, allowing for adjustable thread cutting speeds to accommodate sewing threads of different thicknesses and materials, thus improving cutting efficiency and quality. Furthermore, DC motors are relatively inexpensive, contributing to lower overall equipment manufacturing costs. The driving component is a stepper motor: Stepper motor drives offer advantages such as high positioning accuracy and fast response speed, enabling more precise thread cutting control, especially suitable for high-precision sewing applications. Stepper motors allow for open-loop control, simplifying the control system and improving its reliability.

[0015] This electric thread cutter structure uses a drive unit to power a transmission assembly, which in turn drives the cutting blade and fixed blade of the thread cutting unit to cut the thread. The structure is compact and efficient. The support frame enhances structural stability, while the hinged design of the rotating and fixed rods, along with anti-vibration pads, effectively absorbs thread cutting vibrations, improving cutting accuracy and extending equipment lifespan. The cutter's hook notch, thread groove, and anti-adhesion coating, along with its precise engagement with the fixed blade edge, ensure smooth thread cutting, reduce thread ends and fabric residue, and lower maintenance frequency. The modular blade installation method facilitates maintenance and replacement, and the variety of drive unit options can adapt to different sewing needs.

[0016] Furthermore, the support frame is equipped with shock-absorbing pads made of flexible polymer material. These pads are located at the four corners or edges of the bottom of the support frame to reduce vibrations transmitted to the workbench during equipment operation and lower noise.

[0017] An angle sensor is installed at the hinge between the rotating rod and the fixed rod. This sensor monitors the rotation angle of the rotating rod relative to the fixed rod in real time. Feedback from the angle sensor allows for precise control of the thread-cutting unit's position, ensuring accurate alignment with the sewing stitch with each cut, preventing misalignment or incomplete cuts, and further improving sewing quality and efficiency. Simultaneously, the angle sensor data can also be used for equipment fault diagnosis and maintenance, enhancing equipment reliability and lifespan.

[0018] The beneficial effects of this utility model are as follows: This utility model's electric thread cutter structure adopts a motor-driven gear transmission mechanism to drive the thread cutting unit to perform the cutting action, with a simple and reliable principle. Through the support frame fixing structure, the hinged design of the rotating rod and the fixed rod, and the application of anti-vibration pads, vibration during the thread cutting process is effectively reduced, improving cutting accuracy and stability, and extending the equipment's service life. The special design of the cutter, such as the hook notch, thread groove, anti-adhesion coating, and precise engagement with the fixed blade, ensures smooth thread cutting, reduces thread residue and fabric adhesion, thereby reducing maintenance frequency and improving work efficiency. The modular cutter installation design facilitates cutter replacement and maintenance, while the selection of multiple drive components allows this structure to adapt to different sewing needs, making it highly practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the driving component, transmission assembly, and wire cutting unit of this utility model;

[0021] Figure 3 This is a schematic diagram of the wire-cutting unit and the fixed blade of this utility model.

[0022] The reference numerals in the figures include:

[0023] 1. Drive unit; 2. Transmission assembly; 3. Wire cutting unit; 4. First gear; 5. Second gear; 6. Support frame; 7. Fixed blade; 8. Rotating rod; 9. Fixed rod; 11. Cutting blade; 12. Wire hook notch; 13. Wire receiving groove; 14. First cutting edge; 15. Second cutting edge; 16. Mounting base; 17. Body; 18. Mounting part; 19. Mounting hole; 22. Anti-vibration pad. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0025] Please see Figures 1 to 3 As shown, the present invention discloses an electric thread-cutting structure for sewing equipment, comprising a drive component 1, a transmission assembly 2, and a thread-cutting unit 3. The free end of the drive component 1 is connected to the transmission assembly 2. The transmission assembly 2 includes a first gear 4 and a second gear 5 that meshes with and rotates with the first gear 4. The second gear 5 is fixedly mounted on the thread-cutting unit 3. The drive component 1 drives the first gear 4 to rotate, thereby driving the second gear 5 to rotate. The rotation of the second gear 5 drives the thread-cutting unit 3 to perform thread-cutting operations.

[0026] The wire-cutting structure also includes a support frame 6, and the drive unit 1, transmission assembly 2 and wire-cutting unit 3 are mounted on the support frame 6 via fasteners.

[0027] The wire cutting structure also includes a fixed blade 7 fixedly mounted on the support frame 6, and the wire cutting unit 3 performs wire cutting operations by moving closer to or further away from the fixed blade 7 via the drive member 1.

[0028] The wire cutting unit 3 includes a rotating rod 8 and a fixed rod 9. The fixed rod 9 is fixedly mounted on the support frame 6. One end of the rotating rod 8 is connected to the free end of the driving member 1, and the end of the rotating rod 8 away from the driving member 1 is hinged to the fixed rod 9. The fixed rod 9 is provided with a cutter 11. The driving member 1 drives the rotating rod 8 to rotate, thereby driving the cutter 11 on the fixed rod 9 to rotate to approach or move away from the fixed blade 7 to perform the wire cutting operation.

[0029] The cutter 11 has a hook notch 12 that allows an external needle to pass through. The surface of the cutter 11 facing the fixed blade 7 has a thread receiving groove 13. The end of the thread receiving groove 13 away from the hook notch 12 has a first cutting edge 14 that engages with the fixed blade 7.

[0030] The free end of the fixed blade 7 is provided with a second tangent blade 15, which engages with the first tangent blade 14.

[0031] The driving component 1 is a DC motor or a stepper motor.

[0032] The fixed rod body 9 is provided with a mounting base 16. The mounting base 16 includes a body 17 and a mounting part 18 protruding from the body 17. The mounting part 18 is provided with a mounting hole 19. The cutter 11 is provided with a threaded hole that mates with the mounting hole 19 on the mounting part 18. External fasteners pass through the mounting hole 19 on the mounting part 18 and the threaded hole on the cutter 11 in sequence to install the cutter 11 on the mounting part 18.

[0033] The fixed rod 9 is equipped with a shock-absorbing pad 22, which is used to absorb and disperse the vibration generated during the wire cutting operation.

[0034] The cutter 11 is provided with an anti-adhesion coating, which is uniformly coated on the cutter 11 to reduce the adhesion of thread ends and fabric residue to the cutter 11 during the sewing process.

[0035] When it is necessary to cut the thread, the control system drives the motor to operate. The motor drives the first gear 4 to rotate, which in turn drives the second gear 5 and the rotating rod 8 to rotate. The rotating rod 8 drives the cutter 11 on the fixed rod 9 to approach the fixed blade 7. The first cutting edge 14 of the cutter 11 engages with the second cutting edge 15 of the fixed blade 7, completing the thread cutting operation.

[0036] Drive component 1 is a DC motor: DC motor drives offer advantages such as a wide speed range and simple control, allowing for adjustable thread cutting speeds to accommodate sewing threads of different thicknesses and materials, thus improving cutting efficiency and quality. Furthermore, DC motors are relatively inexpensive, contributing to lower overall equipment manufacturing costs. Drive component 1 is also a stepper motor: Stepper motor drives offer advantages such as high positioning accuracy and fast response speed, enabling more precise thread cutting control, especially suitable for high-precision sewing applications. Stepper motors allow for open-loop control, simplifying the control system and improving its reliability.

[0037] This electric thread cutter structure uses a drive unit 1 to drive a transmission assembly 2, which in turn drives the cutter 11 of the thread cutting unit 3 to cooperate with the fixed blade 7 for thread cutting. The structure is compact and efficient. The support frame 6 enhances structural stability, while the hinged design of the rotating rod 8 and the fixed rod 9, combined with the anti-vibration pad 22, effectively absorbs thread cutting vibration, improving cutting accuracy and extending equipment life. The thread hook notch 12, thread groove 13, and anti-adhesion coating design of the cutter 11, along with its precise engagement with the blade edge of the fixed blade 7, ensure smooth thread cutting, reduce thread ends and fabric residue, and lower maintenance frequency. The modular blade installation method also facilitates maintenance and replacement, and the selection of multiple drive units 1 can adapt to different sewing needs.

[0038] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electric thread-cutting structure for sewing equipment, characterized in that: It includes a drive unit (1), a transmission assembly (2), and a wire-cutting unit (3); the free end of the drive unit (1) is connected to the transmission assembly (2), the transmission assembly (2) includes a first gear (4) and a second gear (5) that meshes with and rotates with the first gear (4), the second gear (5) is fixedly installed on the wire-cutting unit (3), the drive unit (1) drives the first gear (4) to rotate to drive the second gear (5) to rotate, and the rotation of the second gear (5) drives the wire-cutting unit (3) to perform wire-cutting operation.

2. The electric thread-cutting structure for sewing equipment according to claim 1, characterized in that: The wire-cutting structure also includes a support frame (6), a drive unit (1), a transmission assembly (2), and a wire-cutting unit (3), which are mounted on the support frame (6) via fasteners.

3. The electric thread-cutting structure for sewing equipment according to claim 2, characterized in that: The wire cutting structure also includes a fixed blade (7) fixedly mounted on the support frame (6), and the wire cutting unit (3) performs wire cutting operations by moving closer to or further away from the fixed blade (7) via the drive member (1).

4. The electric thread-cutting structure for sewing equipment according to claim 3, characterized in that: The wire cutting unit (3) includes a rotating rod (8) and a fixed rod (9). The fixed rod (9) is fixedly mounted on the support frame (6). One end of the rotating rod (8) is connected to the free end of the driving member (1). The end of the rotating rod (8) away from the driving member (1) is hinged to the fixed rod (9). The fixed rod (9) is provided with a cutter (11). The driving member (1) drives the rotating rod (8) to rotate, thereby driving the cutter (11) on the fixed rod (9) to rotate to approach or move away from the fixed blade (7) to perform wire cutting operations.

5. The electric thread-cutting structure for sewing equipment according to claim 4, characterized in that: The cutter (11) has a hook notch (12) that allows external needles to pass through. The cutter (11) has a thread receiving groove (13) on its surface facing the fixed blade (7). The end of the thread receiving groove (13) away from the hook notch (12) has a first cutting edge (14) that engages with the fixed blade (7).

6. The electric thread-cutting structure for sewing equipment according to claim 5, characterized in that: The fixed blade (7) has a second tangent edge (15) at its free end, and the second tangent edge (15) engages with the first tangent edge (14).

7. The electric thread-cutting structure for sewing equipment according to claim 1, characterized in that: The driving component (1) is a DC motor or a stepper motor.

8. The electric thread-cutting structure for sewing equipment according to claim 4, characterized in that: The fixed rod (9) is provided with a mounting base (16), which includes a body (17) and a mounting part (18) protruding from the body (17). The mounting part (18) is provided with a mounting hole (19). The cutter (11) is provided with a threaded hole that cooperates with the mounting hole (19) on the mounting part (18). External fasteners pass through the mounting hole (19) on the mounting part (18) and the threaded hole on the cutter (11) in sequence to install the cutter (11) on the mounting part (18).

9. The electric thread-cutting structure for sewing equipment according to claim 4, characterized in that: The fixed rod (9) is provided with a shock-absorbing pad (22), which is used to absorb and disperse the vibration generated during the wire cutting operation.

10. The electric thread-cutting structure for sewing equipment according to claim 4, characterized in that: The cutter (11) is provided with an anti-adhesion coating. The anti-adhesion coating is uniformly applied to the cutter (11) to reduce the adhesion of thread ends and fabric residue to the cutter (11) during the sewing process.

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