Screw locking machine

Abstract

The utility model relates to the technical field of triode assembling and processing, in particular to a screw locking machine which comprises a machine frame, the machine frame is provided with an index plate assembly, a detection assembly, a screw locking assembly, a mechanical arm assembly, a discharging assembly and a control panel, the index plate assembly is provided with a plurality of jigs used for loading cooling fins and triodes, and the detection assembly is provided with a plurality of clamping devices used for clamping the cooling fins and the triodes. The radiating fins and the triodes are loaded on the jig in a stacking mode, screw holes are correspondingly formed between the radiating fins and the triodes, the detection assembly, the screw locking assembly, the mechanical arm assembly and the discharging assembly are sequentially arranged on the periphery of the index plate in a surrounding mode, and the detection assembly is used for detecting whether the radiating fins and the triodes on the jig are placed in place or not. The screw locking assembly is used for locking screw holes through screws so that the cooling fins and the triodes can be fixed to form finished products, the mechanical arm assembly is used for feeding the finished products to the discharging assembly, and the discharging assembly is used for discharging the finished products. The automatic screw locking machine replaces manual work to achieve screw locking machining, the labor cost is saved, and the machining efficiency is improved.

Description

A screw fastening machine Technical Field

[0001] This utility model relates to the field of transistor assembly and processing technology, and specifically to a screw fastening machine. Background Technology

[0002] Transistors are one of the basic semiconductor components, providing current amplification and serving as a core element in electronic circuits. Because transistors generate heat easily during operation, heat sinks are necessary to extend their lifespan.

[0003] Transistors and heat sinks are usually fastened together with screws. Currently, this process is done manually, which is labor-intensive and inefficient.

[0004] Therefore, there is still room for improvement and development in existing technologies. Summary of the Invention

[0005] To address the problems in the existing technology, this utility model proposes a screw fastening machine that automates screw fastening, replacing manual labor, thus saving labor costs and improving processing efficiency.

[0006] To achieve the above objectives, the technical solution applied in this utility model is as follows:

[0007] A screw-fastening machine includes a frame, on which are mounted an indexing plate assembly, a detection assembly, a screw-fastening assembly, a robotic arm assembly, a unloading assembly, and a control panel. The indexing plate assembly has multiple fixtures for loading heat sinks and transistors. The heat sinks and transistors are stacked on the fixtures, with corresponding screw holes between them. The detection assembly, screw-fastening assembly, robotic arm assembly, and unloading assembly are sequentially arranged around the outer periphery of the indexing plate. The detection assembly detects whether the heat sinks and transistors on the fixtures are properly positioned. The screw-fastening assembly locks screws into the screw holes to fix the heat sinks and transistors into a finished product. The robotic arm assembly loads the finished product onto the unloading assembly. The unloading assembly unloads the finished product.

[0008] According to the above scheme, the indexing plate assembly includes an indexing plate, a motor, and a gearbox. The indexing plate is rotatably mounted on the frame, and multiple fixtures are arranged around the upper surface of the indexing plate. The output end of the motor is connected to the input end of the gearbox, and the output end of the gearbox is connected to the indexing plate. The motor is used to drive the gearbox to rotate the indexing plate.

[0009] According to the above scheme, the detection component includes a mounting base, a support rod, and a detector. The mounting base is fixed on the frame 1, the lower end of the support rod is fixed on the mounting base, and the upper end of the support rod is fixedly connected to the detector. The detector is equipped with a detection lens, which is located above the fixture. The detector is electrically connected to the control panel.

[0010] According to the above scheme, the screw-locking assembly includes a second mounting base, a first cylinder, a movable base, a movable plate, a second mounting plate, a second motor, a screw mounting component, and a transmission rod. The second mounting base is fixed to the frame, the first cylinder is fixed to the second mounting base, and the output end of the first cylinder is sequentially fixedly connected to the movable base and the movable plate to drive the movable base and the movable plate to rise and fall. The second mounting plate is fixedly connected to the movable base, the second motor is mounted on the second mounting plate, the screw mounting component is mounted on the movable plate, the upper end of the transmission rod is fixedly connected to the output end of the second motor, and the lower end of the transmission rod is correspondingly set with the screw mounting component. The second motor is used to drive the transmission rod to rotate so as to assemble the screw on the screw mounting component into the screw hole. The screw mounting component is correspondingly set with the screw feeding assembly.

[0011] According to the above scheme, a guide rod is fixed on the second mounting base, and the guide rod is slidably connected to the movable base and the movable plate respectively.

[0012] According to the above scheme, a first limiting rod is fixed on the movable plate, and a second limiting rod is fixed on the mounting base. The first limiting rod and the second limiting rod are set accordingly.

[0013] According to the above scheme, there are two screw holes and two sets of screw fastening assemblies, including screw fastening assembly one and screw fastening assembly two. Screw fastening assembly one is located between the detection assembly and screw fastening assembly two, and screw fastening assembly one is correspondingly provided with a screw feeding assembly for assembling screw one into the first screw hole. Screw fastening assembly two is located between screw fastening assembly one and the robot arm assembly, and screw fastening assembly two is correspondingly provided with a screw feeding assembly for assembling screw two into the second screw hole.

[0014] According to the above scheme, the robotic arm assembly includes a mounting base three, a motor three, a transmission shaft, a transmission seat, a cylinder two, and a clamp. The mounting base three is fixed on the frame, the motor three is fixed on the mounting base three, the transmission shaft is correspondingly arranged with the transmission seat, the cylinder two is fixed on the transmission seat, and the clamp is installed on the output end of the cylinder two. The cylinder two is used to drive the clamp to close or open. The motor three is used to drive the transmission shaft to rotate, so as to drive the transmission seat to move the cylinder two and the clamp. The motor three and the transmission shaft are connected by a synchronous belt one, and the synchronous belt one is correspondingly provided with a tensioning pulley.

[0015] According to the above scheme, the transmission shaft is provided with a cam and an eccentric wheel; the transmission seat includes a transmission seat 1 and a transmission seat 2, and a mounting seat 3 is provided with a slide rail 1. The transmission seat 1 is slidably connected to the slide rail 1. The transmission seat 1 is provided with a transmission wheel, and the cam 1 and the transmission wheel are correspondingly arranged. The cam 1 is used to drive the transmission wheel to move the transmission seat 1 horizontally on the slide rail 1; the transmission seat 1 is provided with a slide rail 2, and the transmission seat 2 is slidably connected to the slide rail 2. A rocker arm is hinged on the mounting seat 3. The first end of the rocker arm is correspondingly connected to the transmission seat 2, and the second end of the rocker arm is correspondingly connected to the eccentric wheel. The eccentric wheel is used to drive the rocker arm to move the transmission seat 2 up and down on the slide rail 2.

[0016] According to the above scheme, the feeding assembly includes a mounting base four, a motor four, a drive wheel, a driven wheel, a conveyor belt, and limiting strips; the mounting base four is fixed on the frame, the motor four is fixed on the mounting base four, the conveyor belt is wound around the drive wheel and the driven wheel, the motor four and the drive wheel are connected by a synchronous belt two, and two limiting strips are provided parallel to each other above the conveyor belt, forming a material guiding channel between the two limiting strips.

[0017] The beneficial effects of this utility model are:

[0018] This invention is designed to replace manual screw fastening with an automated screw fastening machine, thus saving labor costs and improving processing efficiency. Attached Figure Description

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

[0020] Figure 2 is a schematic diagram of the indexing plate assembly of this utility model;

[0021] Figure 3 is a schematic diagram of the detection component of this utility model;

[0022] Figure 4 is a schematic diagram of the screw-locking assembly of this utility model;

[0023] Figure 5 is a schematic diagram of the robotic arm assembly of this utility model;

[0024] Figure 6 is a partial schematic diagram of the robotic arm assembly of this utility model;

[0025] Figure 7 is a rear view of Figure 6;

[0026] Figure 8 is a schematic diagram of the feeding component of this utility model.

[0027] In the picture:

[0028] 1. Frame; 2. Indexing plate assembly; 21. Indexing plate; 22. Fixture; 23. Finished product; 24. Heat sink; 25. Transistor; 26. Screw hole; 27. Motor 1; 28. Gearbox; 3. Detection assembly; 31. Mounting base 1; 32. Support rod; 33. Detector; 34. Detection lens; 4. Screw fastening assembly 1; 41. Mounting base 2; 42. Cylinder 1; 43. Movable seat; 44. Guide rod; 45. Movable plate; 46. Mounting plate; 47. Motor 2; 48. Screw mounting part; 49. Limit rod 1; 410. Limit rod 2; 411. Transmission rod; 5. Screw fastening assembly 2; 6. Robotic arm assembly; 61. Mounting base three; 62. Motor three; 63. Drive shaft; 64. Tensioning wheel; 65. Transmission seat; 66. Cylinder two; 67. Clamp; 68. Cam one; 69. Slide rail one; 610. Transmission wheel; 611. Transmission seat one; 612. Transmission seat two; 613. Slide rail two; 614. Eccentric wheel; 615. Tilter; 7. Unloading assembly; 71. Mounting base four; 72. Motor four; 73. Drive wheel; 74. Driven wheel; 75. Conveyor belt; 76. Limit bar; 77. Guide channel; 8. Screw one loading assembly; 9. Screw two loading assembly; 10. Control panel. Detailed Implementation

[0029] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0030] As shown in Figures 1 to 8, the screw-fastening machine of this utility model includes a frame 1. The frame 1 is equipped with an indexing plate assembly 2, a detection assembly 3, a screw-fastening assembly, a robotic arm assembly 6, a feeding assembly 7, and a control panel 10. The indexing plate assembly 2 is equipped with multiple fixtures 22 for loading heat sinks 24 and transistors 25. The heat sinks 24 and transistors 25 are loaded on the fixtures 22 in a stacked manner, and screw holes 26 are provided between the heat sinks 24 and transistors 25. The detection assembly 3, screw-fastening assembly, robotic arm assembly 6, and feeding assembly 7 are arranged sequentially around the outer periphery of the indexing plate 21. The detection assembly 3 is used to detect whether the heat sinks 24 and transistors 25 on the fixtures 22 are placed in place. The screw-fastening assembly is used to lock the screws into the screw holes 26 to fix the heat sinks 24 and transistors 25 to form a finished product 23. The robotic arm assembly 6 is used to load the finished product 23 onto the feeding assembly 7. The feeding assembly 7 is used to unload the finished product 23. This setup, using an automated screw-fastening machine to replace manual screw-fastening, saves labor costs and improves processing efficiency. Specifically, the heat sink 24 and transistor 25 are manually stacked on the fixture 22. When the indexing plate assembly 2 is working, it rotates the heat sink 24 and transistor 25 to the next station, i.e., the position of the detection assembly 3. The detection assembly 3 detects whether the heat sink 24 and transistor 25 on the fixture 22 are properly positioned. When the screw holes 26 of the heat sink 24 and transistor 25 are misaligned (… If the assembly is reversed, the machine stops due to an assembly error. After reassembly, it restarts. When the screw holes 26 of the heat sink 24 and the transistor 25 correspond, the assembly is correct and the machine can be sent to the next station, namely the screw locking assembly position. The screws are locked in the screw holes 26, so that the heat sink 24 and the transistor 25 are fixed together to form the finished product 23. Then the machine rotates to the next station, namely the robot arm assembly 6 position. The robot arm assembly 6 removes the finished product 23 from the fixture 22 and places it on the unloading assembly 7. The unloading assembly 7 unloads the finished product 23.

[0031] Furthermore, the indexing plate assembly 2 includes an indexing plate 21, a motor 27, and a gearbox 28. The indexing plate 21 is rotatably mounted on the frame 1, and multiple fixtures 22 are arranged around the upper surface of the indexing plate 21. The output end of the motor 27 is connected to the input end of the gearbox 28, and the output end of the gearbox 28 is connected to the indexing plate 21. The motor 27 drives the gearbox 28 to rotate the indexing plate 21. With this configuration, the rotation of the indexing plate 21 driven by the motor 27 drives the fixtures 22 to rotate in a circular motion, forming an automated processing line. This method is space-saving and easy to use; it operates in a cyclical manner from loading to unloading, resulting in high work efficiency.

[0032] Furthermore, the detection component 3 includes a mounting base 31, a support rod 32, and a detector 33. The mounting base 31 is fixed to the frame 1, the lower end of the support rod 32 is fixed to the mounting base 31, and the upper end of the support rod 32 is fixedly connected to the detector 33. The detector 33 is equipped with a detection lens 34, which is located above the fixture 22. The detector 33 is electrically connected to the control panel 10. With this configuration, the detector lens 34 takes pictures of the heat sink 24 and the transistor 25 on the fixture 22 for detection, and then feeds the results back to the detector 33 and the control panel 10, thereby confirming whether the fixture is placed in the correct position or is properly positioned, making the detection convenient.

[0033] Furthermore, the screw-locking assembly includes a second mounting base 41, a first cylinder 42, a movable base 43, a movable plate 45, a mounting plate 46, a second motor 47, a screw mounting component 48, and a transmission rod 411. The second mounting base 41 is fixed to the frame 1, the first cylinder 42 is fixed to the second mounting base 41, and the output end of the first cylinder 42 is sequentially fixedly connected to the movable base 43 and the movable plate 45 for driving the movable base 43 and the movable plate 45 to rise and fall. The mounting plate 46 is fixedly connected to the movable base 43, the second motor 47 is mounted on the mounting plate 46, the screw mounting component 48 is mounted on the movable plate 45, the upper end of the transmission rod 411 is fixedly connected to the output end of the second motor 47, and the lower end of the transmission rod 411 is correspondingly arranged with the screw mounting component 48. The second motor 47 is used to drive the transmission rod 411 to rotate so as to assemble the screw on the screw mounting component 48 into the screw hole 26. The screw mounting component 48 is correspondingly arranged with the first screw feeding assembly 8. With this setup, when tightening the screws, cylinder 42 drives the movable seat 43 and movable plate 45 to descend until the screw mounting part 48 aligns with the screw hole 26. Then, motor 47 drives the transmission rod 411 to rotate, thus tightening the screw on the screw mounting part 48 and assembling it into the screw hole 26. After assembly, cylinder 42 drives the movable seat 43 and movable plate 45 to rise and reset, so that subsequent workpieces can be processed.

[0034] Furthermore, a guide rod 44 is fixed on the mounting base 41, and the guide rod 44 is slidably connected to the movable base 43 and the movable plate 45 respectively. This arrangement makes the lifting of the movable base 43 and the movable plate 45 more stable and reliable.

[0035] Furthermore, a first limiting rod 49 is fixed on the movable plate 45, and a second limiting rod 410 is fixed on the mounting base 41. The first limiting rod 49 and the second limiting rod 410 are correspondingly arranged. This arrangement is used to limit the descent stroke of the movable plate 45 and prevent excessive descent from damaging the workpiece.

[0036] Furthermore, there are two screw holes 26 and two sets of screw fastening assemblies, including screw fastening assembly one 4 and screw fastening assembly two 5. Screw fastening assembly one 4 is located between detection assembly 3 and screw fastening assembly two 5. Screw fastening assembly one 4 is correspondingly provided with screw one feeding assembly 8. Screw fastening assembly one 4 is used to assemble screw one into the first screw hole 26. Screw fastening assembly two 5 is located between screw fastening assembly one 4 and robot arm assembly 6. Screw fastening assembly two 5 is correspondingly provided with screw two feeding assembly 9. Screw fastening assembly two 5 is used to assemble screw two into the second screw hole 26. This configuration ensures a more reliable locking effect. Screw assembly 1 (4) and screw assembly 2 (5) have the same structure. Since the two screw holes 26 are located at different positions on the workpiece (heat sink 24 and transistor 25), the difference between screw assembly 2 (5) and screw assembly 1 (4) lies in the position of the screw mounting piece 48. Specifically, the screw mounting piece 48 on screw assembly 1 (4) corresponds to the first screw hole 26, while the screw mounting piece 48 on screw assembly 2 (5) corresponds to the second screw hole 26.

[0037] Preferably, the screw feeding assembly 8 and the screw feeding assembly 9 have the same structure, both including a vibrating feeder and a guide tube. The vibrating feeder and the guide tube work together to feed the screws onto the screw mounting part 48.

[0038] Furthermore, the robotic arm assembly 6 includes a mounting base 61, a motor 62, a transmission shaft 63, a transmission seat 65, a cylinder 66, and a clamp 67. The mounting base 61 is fixed to the frame 1, the motor 62 is fixed to the mounting base 61, the transmission shaft 63 is correspondingly arranged with the transmission seat 65, the cylinder 66 is fixed to the transmission seat 65, and the clamp 67 is installed at the output end of the cylinder 66. The cylinder 66 is used to drive the clamp 67 to close or open. The motor 62 is used to drive the transmission shaft 63 to rotate, thereby driving the transmission seat 65 to move the cylinder 66 and the clamp 67. The motor 62 and the transmission shaft 63 are connected by a synchronous belt, and the synchronous belt is correspondingly provided with a tensioning pulley 64. With this configuration, the robotic arm assembly 6 can clamp and transfer the finished product 23 locked on the fixture 22 to the unloading assembly 7, wherein the motor 62 drives the transmission shaft 63 to rotate, thereby driving the transmission seat 65 to move.

[0039] In practical applications, this invention preferably uses a cam-driven robotic arm, but other robotic arms with different structures can also be used.

[0040] Furthermore, the transmission shaft 63 is provided with a cam 68 and an eccentric wheel 614; the transmission seat 65 includes a transmission seat 611 and a transmission seat 612, and a mounting seat 61 is provided with a slide rail 69. The transmission seat 611 is slidably connected to the slide rail 69. The transmission seat 611 is provided with a transmission wheel 610. The cam 68 and the transmission wheel 610 are correspondingly arranged. The cam 68 is used to drive the transmission wheel 610 to drive the transmission seat 611 to move horizontally on the slide rail 69. The transmission seat 611 is provided with a slide rail 613. The transmission seat 612 is slidably connected to the slide rail 613. The mounting seat 611 is hinged with a rocker arm 615. The first end of the rocker arm 615 is correspondingly connected to the transmission seat 612, and the second end of the rocker arm 615 is correspondingly connected to the eccentric wheel 614. The eccentric wheel 614 is used to drive the rocker arm 615 to drive the transmission seat 612 to move up and down on the slide rail 613. With this configuration, the rotation of motor 62 and transmission shaft 63 drives cam 68 and eccentric wheel 614 to rotate, thereby achieving displacement of transmission seat 65 in the horizontal and vertical directions.

[0041] Furthermore, the feeding assembly 7 includes a mounting base 71, a motor 72, a drive wheel 73, a driven wheel 74, a conveyor belt 75, and limiting strips 76. The mounting base 71 is fixed to the frame 1, the motor 72 is fixed to the mounting base 71, the conveyor belt 75 is wound around the drive wheel 73 and the driven wheel 74, and the motor 72 and the drive wheel 73 are connected by a synchronous belt. Two limiting strips 76 are arranged parallel to each other above the conveyor belt 75, and a material guiding channel 77 is formed between the two limiting strips 76. With this configuration, the motor 72 drives the conveyor belt 75 to rotate to achieve feeding, and the two limiting strips 76 can prevent the finished product 23 from falling.

[0042] The embodiments of the present utility model have been described above with reference to the accompanying drawings. However, the present utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present utility model without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present utility model.

Claims

1. A screw fastening machine, comprising a frame (1), characterized in that: The frame (1) is provided with an indexing plate assembly (2), a detection assembly (3), a screw fastening assembly, a robotic arm assembly (6), a material unloading assembly (7), and a control panel (10); the indexing plate assembly (2) is provided with multiple fixtures (22) for loading heat sinks (24) and transistors (25), the heat sinks (24) and transistors (25) are loaded on the fixtures (22) in a stacked manner, and screw holes (26) are provided between the heat sinks (24) and transistors (25); the detection assembly (3), the screw fastening assembly (6), the material unloading assembly (7), and the control panel (10) are provided on the frame (1); The components, the robotic arm component (6), and the unloading component (7) are arranged sequentially around the outer periphery of the indexing plate (21). The detection component (3) is used to detect whether the heat sink (24) and the transistor (25) on the fixture (22) are stacked in place. The screw locking component is used to lock the screw in the screw hole (26) so that the heat sink (24) and the transistor (25) are fixed to form the finished product (23). The robotic arm component (6) is used to load the finished product (23) onto the unloading component (7). The unloading component (7) is used to unload the finished product (23).

2. A screw fastening machine according to claim 1, characterized in that: The indexing plate assembly (2) includes an indexing plate (21), a motor (27), and a gearbox (28). The indexing plate (21) is rotatably mounted on the frame (1). Multiple fixtures (22) are arranged around the upper surface of the indexing plate (21). The output end of the motor (27) is connected to the input end of the gearbox (28), and the output end of the gearbox (28) is connected to the indexing plate (21). The motor (27) is used to drive the gearbox (28) to rotate the indexing plate (21).

3. A screw fastening machine according to claim 2, characterized in that: The detection component (3) includes a mounting base (31), a support rod (32), and a detector (33). The mounting base (31) is fixed on the frame (1). The lower end of the support rod (32) is fixed on the mounting base (31). The upper end of the support rod (32) is fixedly connected to the detector (33). The detector (33) is provided with a detection lens (34), which is located above the fixture (22). The detector (33) is electrically connected to the control panel (10).

4. A screw fastening machine according to claim 2, characterized in that: The screw-locking assembly includes a second mounting base (41), a first cylinder (42), a movable base (43), a movable plate (45), a mounting plate (46), a second motor (47), a screw mounting component (48), and a transmission rod (411); the second mounting base (41) is fixed on the frame (1), the first cylinder (42) is fixed on the second mounting base (41), and the output end of the first cylinder (42) is sequentially fixedly connected to the movable base (43) and the movable plate (45) for driving the movable base (43) and the movable plate (45) to rise and fall; the mounting plate (46) and the second motor (47) are connected to the second motor (48), the second motor (49), the second screw mounting component (40), the second screw mounting component (411), the second screw mounting component (42), the second screw mounting component (411), the second screw mounting component (42), the second screw mounting component (43), the second screw mounting component (44), the second screw mounting component (45), the second screw mounting component (46), the second screw mounting component (47), the second screw mounting component (48), the second screw mounting component (49), the second screw mounting component (411), the second screw mounting component (411), the second screw mounting component (42), the second screw mounting component (411), the second screw mounting component (42), the second screw mounting component (43 ... The movable seat (43) is fixedly connected, the second motor (47) is mounted on the mounting plate (46), the screw mounting part (48) is mounted on the movable plate (45), the upper end of the transmission rod (411) is fixedly connected to the output end of the second motor (47), the lower end of the transmission rod (411) is correspondingly set with the screw mounting part (48), the second motor (47) is used to drive the transmission rod (411) to rotate so as to assemble the screw on the screw mounting part (48) into the screw hole (26); the screw mounting part (48) is correspondingly set with the screw feeding assembly (8).

5. A screw fastening machine according to claim 4, characterized in that: A guide rod (44) is fixed on the mounting base (41), and the guide rod (44) is slidably connected to the movable base (43) and the movable plate (45) respectively.

6. A screw fastening machine according to claim 5, characterized in that: Limiting rod one (49) is fixed on the movable plate (45), and limiting rod two (410) is fixed on the mounting base two (41). The limiting rod one (49) and the limiting rod two (410) are set accordingly.

7. A screw fastening machine according to claim 2, characterized in that: There are two screw holes (26), and there are two sets of screw fastening assemblies, including screw fastening assembly one (4) and screw fastening assembly two (5). Screw fastening assembly one (4) is located between the detection assembly (3) and screw fastening assembly two (5). Screw fastening assembly one (4) is provided with a screw one feeding assembly (8). Screw fastening assembly one (4) is used to assemble screw one into the first screw hole (26). Screw fastening assembly two (5) is located between screw fastening assembly one (4) and the robot arm assembly (6). Screw fastening assembly two (5) is provided with a screw two feeding assembly (9). Screw fastening assembly two (5) is used to assemble screw two into the second screw hole (26).

8. A screw fastening machine according to claim 2, characterized in that: The robotic arm assembly (6) includes a mounting base three (61), a motor three (62), a transmission shaft (63), a transmission seat (65), a cylinder two (66), and a clamp (67). The mounting base three (61) is fixed on the frame (1), the motor three (62) is fixed on the mounting base three (61), the transmission shaft (63) is correspondingly arranged with the transmission seat (65), the cylinder two (66) is fixed on the transmission seat (65), and the clamp (67) is installed on the output end of the cylinder two (66). The cylinder two (66) is used to drive the clamp (67) to close or open. The motor three (62) is used to drive the transmission shaft (63) to rotate, so as to drive the transmission seat (65) to move the cylinder two (66) and the clamp (67). The motor three (62) and the transmission shaft (63) are connected by a synchronous belt one, and the synchronous belt one is correspondingly provided with a tensioning pulley (64).

9. A screw fastening machine according to claim 8, characterized in that: The drive shaft (63) is provided with a cam (68) and an eccentric wheel (614); the drive seat (65) includes a drive seat (611) and a drive seat (612); the mounting seat (61) is provided with a slide rail (69); the drive seat (611) is slidably connected to the slide rail (69); the drive seat (611) is provided with a drive wheel (610); the cam (68) and the drive wheel (610) are correspondingly arranged; the cam (68) is used to drive the drive wheel (610) to drive the drive seat (611) to move in a certain direction. The slide rail 1 (69) is horizontally displaced; the transmission seat 1 (611) is provided with a slide rail 2 (613), the transmission seat 2 (612) is slidably connected to the slide rail 2 (613), the mounting seat 3 (61) is hinged with a rocker arm (615), the first end of the rocker arm (615) is correspondingly connected to the transmission seat 2 (612), the second end of the rocker arm (615) is correspondingly connected to the eccentric wheel (614), the eccentric wheel (614) is used to drive the rocker arm (615) to drive the transmission seat 2 (612) to move up and down on the slide rail 2 (613).

10. A screw fastening machine according to claim 2, characterized in that: The feeding assembly (7) includes a mounting base (71), a motor (72), a drive wheel (73), a driven wheel (74), a conveyor belt (75), and a limiting strip (76). The mounting base (71) is fixed on the frame (1), the motor (72) is fixed on the mounting base (71), the conveyor belt (75) is wound around the drive wheel (73) and the driven wheel (74), the motor (72) and the drive wheel (73) are connected by a synchronous belt, and two limiting strips (76) are provided parallel to each other above the conveyor belt (75), and a material guiding channel (77) is formed between the two limiting strips (76).

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