Thread trimming structure of garment sewing machine
By using reducer gears and thread telescopic structures in the clothing sewing machine, the wire hook tension force is improved during thread cutting, and the limit and reverse push structure are set on the side of the tangent blade, the problem of insufficient tension of the existing thread cutting mechanism is solved, and the Effective cutting and shearing of hard sutures.
Patent Information
- Application Number
- CN202420336311.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-23
AI Technical Summary
The existing automatic wire cutting mechanism often lacks the tension of the wire pull hook when cutting wires, especially when dealing with a hard bottom line, which lacks an effective treatment method.
A thread-cutting structure of the clothing sewing machine is designed, using reduction gears and thread telescopic structures. By controlling the motor to drive the rotating gears and transmission gears, the tension of the wire hook is increased, and the limit shrapnel and reverse push spring are set on the side of the tangent blade to ensure that Fully contact and prevent excessive tension.
The tension of the thread hook during thread cutting can be improved, which can effectively cut the hard suture, avoid breaking the suture, and ensure full contact between the tangent blade and the thread, improving shear efficiency.
Smart Images
Figure CN222160622U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thread trimming structures, in particular to a thread trimming structure for a clothing sewing machine. Background Art
[0002] In the modern clothing manufacturing process, many joints of clothing need to be sewn using a sewing machine. After sewing, in order to remove the material, the thread ends need to be cut. In order to improve efficiency in modern sewing processing, automatic thread trimmers are usually used to trim the threads. The existing automatic thread trimmer mechanism usually adopts a gear-linked pushing mechanism to push out a thread hook with a thread hooking function, so that the thread hook hooks the part to be trimmed, and then the thread is hooked into the thread groove and cut by the cutter in the thread groove. However, this gear-driven thread trimmer mainly uses a small torque motor when in use. When trimming the thread, the pulling force of the thread hook is often insufficient. Moreover, when using a harder bottom thread, although it can contact the cutter, it cannot be cut. The existing sewing machine does not have a better way to deal with this. In view of this, in-depth research was conducted on the above-mentioned problems, and this case was produced. Utility Model Content
[0003] In view of the deficiencies of the prior art, the utility model provides a thread cutting structure for a garment sewing machine, which solves the problems of the prior art.
[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a thread trimming structure of a clothing sewing machine, comprising a thread trimming machine base, a guide slide rail is provided on the thread trimming machine base, a control motor is arranged on one side of the bottom of the thread trimming machine base, a rotating gear is connected to the driving end of the control motor, and a transmission gear is meshed on one side of the rotating gear;
[0005] A guide base is provided at the bottom of the guide rail, the transmission gear is movably mounted on the guide base, a control nut is embedded in the transmission gear, a control screw is threadedly connected to the control nut, and a tangent hook is provided at the front end of the control screw;
[0006] A wire clamp is provided on one side of the guide rail, a wire cutting blade is arranged inside the wire clamp, and a guide stopper is provided on the corresponding side of the wire cutting blade;
[0007] The guide limiter comprises a fixing screw, which is threadedly connected to one side of the guide rail. A fixing seat is sleeved on the fixing screw, and a limiting spring sheet extends from one side of the fixing seat.
[0008] Preferably, the number of teeth and the wheel diameter of the transmission gear correspond to the number of teeth and the wheel diameter of the rotating gear.
[0009] Preferably, the guide rail is an empty groove of an oblong structure, and a guide slider is installed in the guide rail to be connected with the tangent hook.
[0010] Preferably, the limiting spring piece is attached to the guide slider.
[0011] Preferably, a fixing sleeve is extended from one side of the guide slider, a slot is provided on the fixing sleeve, an insert rod is extended from the tail end of the tangent hook and inserted into the slot, and a reverse thrust spring is provided on the outer sleeve of the insert rod.
[0012] Preferably, the end of the insertion rod is connected to a limit plate that fits on the reverse thrust spring.
[0013] Beneficial Effects
[0014] The utility model provides a thread cutting structure for a clothing sewing machine. The utility model has the following beneficial effects: the thread cutting structure for the clothing sewing machine increases the pulling force of the thread hook when cutting the thread by setting a reduction gear and a thread telescopic structure, and in order to avoid the suture thread being torn off by excessive pulling force, a reverse thrust spring is set at the connection position between the thread rod and the thread hook, and in order to maintain full contact, a spring sheet structure is set on the corresponding side of the thread cutting blade, and the slider is pushed to make the thread hook fully contact with the thread cutting blade when hooking the thread, so that the hard suture thread can be cut more effectively. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the main structure of a thread cutting structure of a garment sewing machine described in the utility model.
[0016] Figure 2 The utility model is a schematic diagram of a top view of the thread cutting structure of a garment sewing machine.
[0017] Figure 3 It is a side structural schematic diagram of a thread cutting structure of a garment sewing machine described in the utility model.
[0018] In the figure: 1. Thread trimmer base; 2. Guide slide rail; 3. Control motor; 4. Rotating gear; 5. Transmission gear; 6. Guide base; 7. Control nut; 8. Control screw; 9. Thread trimmer hook; 10. Thread clamp; 11. Thread trimmer blade; 12. Fixed screw; 13. Fixed seat; 14. Limiting spring; 15. Guide slide block; 16. Insert rod; 17. Reverse thrust spring; 18. Limiting plate; 19. Fixed sleeve. 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] See also Figure 1-3 The utility model provides an implementation scheme: in the current clothing sewing process, after the sewing is completed, a thread cutting mechanism is generally used to cut the sewing thread. The existing thread cutting structure is more laborious for a harder thread during the pulling process, and it is not easy to cut if there is insufficient contact during the cutting process. Therefore, the present application designs a clothing sewing machine thread cutting structure, including a thread cutting machine base 1, which is installed on the sewing machine using a modular design. A guide slide rail 2 is provided on the thread cutting base. The guide slide rail 2 is an operation limit device of the thread cutting hook 9, which is used to limit the reciprocating limit motion of the thread cutting hook 9. A control motor 3 is arranged on one side of the bottom of the thread cutting machine base 1, which is the driving force of the thread hooking device. The force control mechanism controls the rotating gear 4 connected to the driving end of the motor 3 to mesh with the transmission gear 5, so that the transmission gear 5 drives the control nut 7 to rotate, and then the control nut 7 meshes with the control screw 8, so that the control screw 8 moves linearly. By controlling the direction of the control motor 3, the movement direction of the control screw 8 is changed, and then the control screw 8 drives the tangent hook 9 to move. When tangent, the control screw 8 drives the tangent hook 9 to move toward the bottom line, and moves back after the tangent hook 9 hooks the suture line. After the suture line hooks the line, it passes through the clamp 10 and contacts the tangent blade 11 on the clamp 10 to complete the tangent, and then the broken thread head is clamped into the clamp 10;
[0021] According to the instruction manual Figure 1-3 It can be seen that a guide stopper is provided on the corresponding side of the cutting blade 11; the guide stopper includes a fixed screw 12, the fixed screw 12 is threadedly connected to one side of the guide rail 2, a fixed seat 13 is sleeved on the fixed screw 12, and a limiting spring 14 extends from one side of the fixed seat 13;
[0022] During the specific implementation process, the fixing seat 13 is pushed and fixed on one side of the guide rail 2 by the fixing screw 12, and the limiting spring piece 14 extending from one side of the fixing seat 13 is attached to one side of the tangent hook 9. The limiting spring piece 14 pushes the tangent hook 9 to stay close to the side of the tangent blade 11, so that the suture line is in full contact with the tangent blade 11.
[0023] As a preferred solution, further, the number of teeth and the wheel diameter of the transmission gear 5 correspond to the number of teeth and the wheel diameter of the rotating gear, and the output torque of the transmission gear 5 is increased by the reduction setting.
[0024] As a preferred solution, further, the guide rail 2 is an empty groove with an oblong structure, and a guide slider 15 is installed in the guide rail 2 to connect with the tangent line hook 9. The guide slider 15 serves the purpose of limiting the running trajectory of the tangent line hook 9 and is also used to prevent the control screw 8 from rolling.
[0025] As a preferred solution, further, the limiting spring piece 14 is attached to the guide slider 15 , and the guide slider 15 extends an extrusion block along the axial direction of the tangent hook 9 .
[0026] As a preferred solution, further, a fixing sleeve 19 is extended from one side of the guide slider 15, and a slot is provided on the fixing sleeve 19. An insertion rod 16 is extended from the tail end of the tangent line hook 9 and inserted into the slot. The outer sleeve of the insertion rod 16 is provided with a reverse thrust spring 17. Since the present application adopts the deceleration effect of the transmission gear 5 and the rotating gear to increase the output torque, and uses the threaded structure to further decelerate and control the extension and retraction of the tangent line hook 9, the tension when hooking the line can be controlled. However, in order to avoid breaking the line, a reverse thrust spring 17 is provided at the tail end. When the tension is too large, the reverse thrust spring 17 is compressed to protect the suture.
[0027] As a preferred solution, further, the end of the insertion rod 16 is connected to a limit plate 18 that fits on the reverse thrust spring 17 .
[0028] From the above, it can be generally known that the thread cutting structure of the clothing sewing machine improves the pulling force of the thread hook when cutting the thread by setting the reduction gear and the thread telescopic structure. In order to avoid the excessive pulling force and tearing the sewing thread, a reverse thrust spring 17 is set at the connection position between the thread rod and the thread hook. At the same time, in order to maintain full contact, a spring structure is set on the corresponding side of the thread cutting blade 11. When the slider is pushed to make the thread hook fully contact with the thread cutting blade 11 when hooking the thread, the hard suture can be sheared more effectively.
[0029] 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 trimming structure for a garment sewing machine, comprising a thread trimming machine base (1), wherein the thread trimming machine base (1) is provided with a guide slide rail (2), a control motor (3) is arranged on one side of the bottom of the thread trimming machine base (1), and a rotating gear (4) is connected to the driving end of the control motor (3), characterized in that: A transmission gear (5) is meshed with one side of the rotating gear (4); A guide base (6) is provided at the bottom of the guide rail (2), the transmission gear (5) is movably mounted on the guide base (6), a control nut (7) is embedded in the transmission gear (5), a control screw (8) is threadedly connected to the control nut (7), and a tangent hook (9) is provided at the front end of the control screw (8); A wire clamp (10) is provided on one side of the guide slide rail (2), a wire cutting blade (11) is arranged inside the wire clamp (10), and a guide stopper is provided on the corresponding side of the wire cutting blade (11); The guide limiter comprises a fixing screw (12), wherein the fixing screw (12) is threadedly connected to one side of the guide rail (2), a fixing seat (13) is sleeved on the fixing screw (12), and a limiting spring sheet (14) extends from one side of the fixing seat (13).
2. A thread cutting structure for a garment sewing machine according to claim 1, characterized in that: The number of teeth and the wheel diameter of the transmission gear (5) correspond to the number of teeth and the wheel diameter of the rotating gear.
3. A thread cutting structure for a garment sewing machine according to claim 2, characterized in that: The guide rail (2) is a hollow groove of an oblong structure, and a guide slider (15) is installed in the guide rail (2) and is connected to the tangent hook (9).
4. A thread cutting structure for a garment sewing machine according to claim 3, characterized in that: The limiting spring piece (14) is attached to the guide slide block (15).
5. The thread cutting structure of a garment sewing machine according to claim 4, characterized in that: A fixing sleeve (19) extends from one side of the guide slide block (15), and a slot is provided on the fixing sleeve (19). An insert rod (16) extends from the tail end of the tangent hook (9) and is inserted into the slot. A reverse thrust spring (17) is provided on the outer sleeve of the insert rod (16).
6. The thread cutting structure of a garment sewing machine according to claim 5, characterized in that: The end of the insertion rod (16) is connected to a limiting plate (18) and fits on the reverse thrust spring (17).