Screw locking machine

Abstract

The utility model belongs to the technical field of screw assembly, and particularly relates to a screw locking machine which comprises a frame body, a workbench, a mounting seat, a lifting assembly and an electric screwdriver, the electric screwdriver comprises a shell, a motor, a locking rod, a locking head and a magnetic attraction piece, the motor is mounted in the shell, the output end of the motor is exposed out of the shell, and the magnetic attraction piece is arranged on the mounting seat. One end of the locking rod is connected with the output end, the locking head is provided with a connecting part and a working part which are connected, the connecting part is connected with the end, away from the motor, of the locking rod, and the magnetic attraction piece is arranged on the periphery of the connecting part and used for attracting a screw to the locking head. According to the electric screwdriver, the magnetic attraction piece can transmit magnetic force to the locking head, so that the locking head has certain magnetism to attract a screw, compared with the prior art, the distance between the magnetic attraction piece and the screw is small, magnetic attraction force can be applied to the screw attracted to the locking head, the screw is not prone to falling off, and the stability of the electric screwdriver is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to screw assembly technical field especially relates to a screw lock machine. BACKGROUND

[0002] Screw lock machine, through the automation mechanism replaces the hand to complete the assembly work of screw, mainly applied to the automatic assembly of automobile parts production, computer, display screen, motor, lamps and lanterns, mobile phone, printer, circuit board, battery, instrument etc.

[0003] The existing screw lock machine, including frame body, lifting assembly, electric screwdriver and work table, frame body is installed on the work table, lifting assembly is connected with frame body, electric screwdriver is connected with lifting assembly, the inside of electric screwdriver is equipped with coil, passes through the electrification to coil to produce magnetic field, makes the locking rod of electric screwdriver produce magnetism, thereby the locking rod of electric screwdriver can adsorb screw, electric screwdriver drives the locking rod to rotate, lifting assembly drives electric screwdriver to descend, to lock the screw on the product of work table.

[0004] However, the screw on the locking rod of the existing electric screwdriver is easy to fall off, and the stability is poor. SUMMARY

[0005] The utility model relates to a screw lock machine that addresses the problem of screws falling off the body of an electric screwdriver.

[0006] To solve the above technical problems, the utility model embodiment provides a screw lock machine, including frame body, work table, mounting seat, lifting assembly and above-mentioned electric screwdriver, the frame body and the mounting seat are all installed on the work table, the lifting assembly is connected with the frame body, the electric screwdriver is connected with the lifting assembly, the locking rod extends along the up and down direction, the lifting assembly is used to drive the electric screwdriver to move to the direction close to or away from the mounting seat, and the mounting seat is used for fixing the product to be locked.

[0007] The electric screwdriver includes a housing, a motor, a locking rod, a locking head, and a magnetic attraction piece. The motor is installed in the housing, the output end of the motor is exposed from the housing, one end of the locking rod is connected with the output end, the locking head has a connecting part and a working part connected with each other, the connecting part is connected with the end of the locking rod away from the motor, and the magnetic attraction piece is arranged on the outer periphery of the connecting part. The magnetic attraction piece is used to adsorb the screw on the locking head.

[0008] The magnetic attraction piece is a magnetic attraction sleeve, and the magnetic attraction sleeve is sleeved on the connecting part.

[0009] Optionally, the frame body is provided with a mounting plate, the lifting assembly comprises a first lifting unit, the first lifting unit comprises a lifting plate and a first driving mechanism, the first driving mechanism is connected with the mounting plate, the lifting plate is connected with the first driving mechanism, the first driving mechanism can drive the lifting plate to move towards or away from the mounting base, and the housing of the electric screwdriver is connected with the lifting plate.

[0010] Optionally, the mounting plate is provided with a first sliding rail extending in the up-down direction, the first driving mechanism comprises a first sliding block and a first driving piece, the first sliding block is connected with a side of the lifting plate facing the mounting plate, the first sliding block is provided with a first sliding groove on a side facing the mounting plate, the first sliding groove is in sliding connection with the first sliding rail, the first driving piece is connected with the mounting plate, the first sliding block is connected with the first driving piece, the first driving piece is used to drive the first sliding block to move towards or away from the mounting base, and the lifting plate is connected with a side of the first sliding block facing away from the mounting plate.

[0011] Optionally, the lifting assembly further comprises a second lifting unit, the second lifting unit comprises a second driving mechanism, a bearing seat and a second sliding block, a second sliding rail is arranged on a side of the lifting plate facing away from the mounting plate, the second sliding rail extends in the up-down direction, the second sliding block is connected with the bearing seat, the second sliding block is provided with a second sliding groove on a side facing the lifting plate, the second sliding groove is in sliding connection with the second sliding rail, the second driving mechanism is connected with the lifting plate, the bearing seat is connected with the second driving mechanism, the second driving mechanism is used to drive the bearing seat to move towards or away from the mounting base, and the housing of the electric screwdriver is connected with the bearing seat.

[0012] Optionally, the second driving mechanism comprises a lifting cylinder, a cylinder body of the lifting cylinder is connected with the lifting plate, and the bearing seat is connected with a piston rod of the lifting cylinder.

[0013] Optionally, the second driving mechanism further comprises a buffer piece and a driving rod, the driving rod extends in the up-down direction, a top end of the driving rod is connected with a bottom end of the piston rod, a bottom end of the driving rod is connected with the bearing seat, and the buffer piece is used for buffering when the bearing seat descends.

[0014] Optionally, the buffer piece is a buffer spring, the bearing seat is provided with a insertion hole, the bottom end of the driving rod is slidingly inserted into the insertion hole, the buffer spring is sleeved on the driving rod, the driving rod is provided with a stop piece, one end of the buffer spring is connected with the stop piece, and the other end of the buffer spring is connected with the bearing seat.

[0015] Optionally, it also includes a translation mechanism and a screw holder, the screw holder being connected to the workbench and spaced apart from the mounting base, the translation mechanism being connected to the frame, and the mounting plate being connected to the translation mechanism, the translation mechanism being used to drive the mounting plate to move between the screw holder and the mounting base.

[0016] According to the screw fastening machine of this utility model embodiment, a magnetic suction component is provided on the outer periphery of the connecting part of the locking rod. Compared with the prior art, the magnetic suction component can not only transmit magnetic force to the locking head, so that the locking head has a certain magnetism to attract screws, but also the distance between the magnetic suction component and the screw is relatively close, so that the magnetic suction force can be directly applied to the screw attracted to the locking head, making the screw less likely to fall off and improving the stability of the electric screwdriver. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an electric screwdriver provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the screw fastening machine provided in an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Assembly diagram of the translation mechanism, lifting assembly and electric screwdriver;

[0020] Figure 4 for Figure 2 A schematic diagram of the lifting assembly.

[0021] The reference numerals in the accompanying drawings are as follows: 1. Electric screwdriver; 2. Motor; 3. Locking rod; 4. Locking head; 5. Connecting part; 6. Magnetic sleeve; 7. Working part; 8. Outer shell; 9. Frame; 10. Workbench; 11. Mounting base; 12. Product; 13. Screw holder; 14. Translation mechanism; 15. Lifting assembly; 16. Housing; 17. Second drive mechanism; 18. Lifting cylinder; 19. Cylinder body; 20. Piston rod; 21. Drive rod; 22. First drive mechanism; 23. First drive component; 24. Lifting motor; 25. Drive wheel; 26. Driven wheel; 27. Lifting belt; 28. Lifting screw; 29. ​​Mounting plate; 30. First slide rail; 31. First slider; 32. Mounting part; 33. Connecting arm; 34. Assembly part; 35. First slide groove; 36. Lifting plate; 37. Second slide rail; 38. Bearing seat; 39. Second slide groove; 40. Insertion hole; 41. Buffer spring; 42. Support plate; 43. Translation slider; 44. Translation screw; 45. Translation belt; 46. Translation slide rail. Detailed Implementation

[0022] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] like Figures 2 to 4 As shown, an embodiment of this utility model provides a screw fastening machine, including a frame 9, a workbench 10, a mounting base 11, a lifting assembly 15, and the aforementioned electric screwdriver 1. The frame 9 and the mounting base 11 are both mounted on the workbench 10. The lifting assembly 15 is connected to the frame 9, and the electric screwdriver 1 is connected to the lifting assembly 15. The locking rod 3 extends in the vertical direction. The lifting assembly 15 is used to drive the electric screwdriver 1 to move towards or away from the mounting base 11. The mounting base 11 is used to fix the product 12 to be fastened.

[0024] like Figure 1 As shown, the electric screwdriver 1 includes a housing 8, a motor 2, a locking rod 3, a locking head 4, and a magnetic attractor. The motor 2 is installed inside the housing 8, with its output end protruding from the housing 8. One end of the locking rod 3 is connected to the output end. The locking head 4 has a connecting part 5 and a working part 7 connected together. The connecting part 5 is connected to the end of the locking rod 3 away from the motor 2. The magnetic attractor is arranged on the outer periphery of the connecting part 5 and is used to attract screws onto the locking head 4.

[0025] Specifically, the locking rod 3 extends vertically. The upper end of the locking rod 3 is connected to the output end of the motor 2 in the housing 8, and the lower end of the locking rod 3, i.e. the bottom end of the working part 7, is connected to the locking head 4. A magnetic attractor is provided on the outer periphery of the connecting part 5 of the locking rod 3. The magnetic attractor can not only transmit magnetic force to the locking head 4, making the locking head 4 have a certain magnetism to attract screws, but also the distance between the magnetic attractor and the screw is relatively close, which can apply magnetic attraction to the screw attracted on the locking head 4, making the screw less likely to fall off and improving the stability of the electric screwdriver 1.

[0026] In one embodiment, the magnetic suction element is a magnetic sleeve 6, which is sleeved on the connecting part 5.

[0027] Specifically, the locking rod 3 is cylindrical, and the magnetic component is a circular magnetic sleeve 6. The magnetic sleeve 6 is fitted onto the connecting part 5. The circular magnetic sleeve 6 can apply a more balanced magnetic force to the screw that is attracted to the locking head 4, making the screw less prone to tilting and more stably attracted to the locking head 4.

[0028] Specifically, the locking rod 3 extends vertically. The upper end of the locking rod 3 is connected to the output end of the motor 2 in the housing 8, and the lower end of the locking rod 3, i.e. the bottom end of the working part 7, is connected to the locking head 4. A magnetic attractant is provided on the outer periphery of the connecting part 5 of the locking rod 3. The magnetic attractant can not only transmit magnetic force to the locking head 4, making the locking head 4 have a certain magnetism to attract screws, but also the distance between the magnetic attractant and the screw is relatively close, which can apply magnetic attraction to the screw attracted on the locking head 4, making the screw less likely to fall off and improving the stability of the electric screwdriver 1. The lifting component 15 can drive the electric screwdriver 1 to move up and down, thereby locking the screw onto the product 12 of the mounting base 11.

[0029] In one embodiment, the frame 9 is provided with a mounting plate 29, and the lifting assembly 15 includes a first lifting unit, which includes a lifting plate 36 and a first driving mechanism 22. The first driving mechanism 22 is connected to the mounting plate 29, and the lifting plate 36 is connected to the first driving mechanism 22. The first driving mechanism 22 can drive the lifting plate 36 to move closer to or further away from the mounting base 11. The outer shell 8 of the electric screwdriver 1 is connected to the lifting plate 36.

[0030] Specifically, the mounting plate 29 is rectangular and is mounted on the frame 9. The first drive mechanism 22 is mounted on the mounting plate 29. The lifting plate 36 is connected to the first drive mechanism 22. The first drive mechanism 22 can drive the lifting plate 36 to move up and down. When the lifting plate 36 moves up and down, it drives the electric screwdriver 1 connected to the lifting plate 36 to move up and down, thereby moving closer to or away from the product 12 on the mounting base 11, thereby fastening the screws to the product 12. This automated design saves manpower.

[0031] In one embodiment, the mounting plate 29 is provided with a first slide rail 30 extending in the vertical direction. The first driving mechanism 22 includes a first slider 31 and a first driving member 23. The first slider 31 is connected to the side of the lifting plate 36 facing the mounting plate 29. The side of the first slider 31 facing the mounting plate 29 is provided with a first sliding groove 35. The first sliding groove 35 is slidably connected to the first slide rail 30. The first driving member 23 is connected to the mounting plate 29. The first slider 31 is connected to the first driving member 23. The first driving member 23 is used to drive the first slider 31 to move towards or away from the mounting base 11. The lifting plate 36 is connected to the side of the first slider 31 facing away from the mounting plate 29.

[0032] Specifically, the first slide rail 30 extends vertically and is mounted on the mounting plate 29. The first slider 31 is located between the lifting plate 36 and the mounting plate 29. The first slide groove 35 on the side of the first slider 31 facing the mounting plate 29 is slidably connected to the first slide rail 30. The side of the first slider 31 facing away from the mounting plate 29 is connected to the lifting plate 36.

[0033] The first driving component 23 includes a lifting motor 24, a lifting screw 28, a driving wheel 25, a driven wheel 26, and a lifting belt 27. The lifting motor 24 is mounted on the side of the mounting plate 29 facing away from the lifting plate 36. The driving wheel 25 is connected to the output end of the lifting motor 24. The housing 16 of the first lifting unit is connected to the mounting plate 29. The first slider 31 includes a mounting part 32 and an assembly part 34. A first sliding groove 35 is provided on the assembly part 34. The lifting screw 28 passes through the assembly part 34 vertically and is threadedly connected to the assembly part 34. The bottom end of the lifting screw 28 is rotatably fitted to the bottom of the housing 16. The driven wheel 26 is connected to the top end of the lifting screw 28. The lifting belt 27 is wound around the driving wheel 25 and the driven wheel 26, thereby driving the lifting screw 28 to rotate. When the lifting screw 28 rotates, it drives the first slider 31 to move up and down. As a driving mechanism, the lifting screw 28 can self-lock with the first slider 31 to prevent the first slider 31 from descending on its own and improve the stability of the first slider 31.

[0034] The assembly part 34 and the mounting part 32 are connected by a connecting arm 33. The outer wall of the housing 16 is provided with an elongated hole extending vertically. The connecting arm 33 passes through the elongated hole, which also serves as a guide for the connecting arm 33.

[0035] In one embodiment, the lifting assembly 15 further includes a second lifting unit, which includes a second driving mechanism 17, a support seat 38, and a second slider. The lifting plate 36 has a second slide rail 37 on the side facing away from the mounting plate 29, which extends in the vertical direction. The second slider is connected to the support seat 38. The second slider has a second groove 39 on the side facing the lifting plate 36, which is slidably connected to the second slide rail 37. The second driving mechanism 17 is connected to the lifting plate 36, and the support seat 38 is connected to the second driving mechanism 17. The second driving mechanism 17 is used to drive the support seat 38 to move towards or away from the mounting seat 11. The outer shell 8 of the electric screwdriver 1 is connected to the support seat 38.

[0036] Specifically, the second slide rail 37 extends vertically and is disposed on the lifting plate 36. The second slider is disposed between the lifting plate 36 and the support seat 38. The second slide groove 39 disposed on the side of the second slider facing the lifting plate 36 is slidably connected to the second slide rail 37. The side of the second slider facing away from the mounting plate 29 is connected to the support seat 38. The outer shell 8 of the electric screwdriver 1 is connected to the support seat 38. The electric screwdriver 1 is driven to rise and fall by the second drive mechanism 17, thereby increasing the lifting range of the electric screwdriver 1.

[0037] In one embodiment, the second drive mechanism 17 includes a lifting cylinder 18, the cylinder body 19 of which is connected to the lifting plate 36, and the support seat 38 is connected to the piston rod 20 of the lifting cylinder 18. The lifting cylinder 18 is easy to design and install, and saves costs.

[0038] In one embodiment, the second drive mechanism 17 further includes a buffer and a drive rod 21. The drive rod 21 extends in the vertical direction, and the top end of the drive rod 21 is connected to the bottom end of the piston rod 20. The bottom end of the drive rod 21 is connected to the support seat 38. The buffer is used to cushion the descent of the support seat 38.

[0039] The buffer component is a buffer spring 41. The support seat 38 is provided with an insertion hole 40. The bottom end of the drive rod 21 is slidably inserted into the insertion hole 40. The buffer spring 41 is sleeved on the drive rod 21. The drive rod 21 is provided with a stop. One end of the buffer spring 41 is connected to the stop, and the other end of the buffer spring 41 is connected to the support seat 38.

[0040] Specifically, the support seat 38 is provided with a through-hole 40. A drive rod 21, connected to the piston rod 20 of the lifting cylinder 18, is slidably inserted into the through-hole 40. The lifting cylinder 18 can drive the drive rod 21 to move up and down within the through-hole 40. A buffer spring 41 is fitted onto the drive rod 21. The top end of the buffer spring 41 is connected to a stop on the piston rod 20, and the bottom end of the buffer spring 41 is connected to the support seat 38. Thus, the support seat 38 is suspended from the lifting cylinder 18 via the buffer spring 41. When the lifting cylinder 18 drives the drive rod 21 to descend, first... The buffer spring is compressed to reduce the impact of the lifting cylinder 18 on the bearing seat 38, thereby reducing the impact of the electric screwdriver 1 mounted on the bearing seat 38 on the product 12. When the buffer spring 41 is compressed to its limit, the lifting cylinder 18 will drive the bearing seat 38 to move downward, so that the locking rod 3 of the electric screwdriver 1, with the attracted screw, enters the mounting hole of the product 12. During the screw tightening process, the buffer spring 41 will continue to drive the bearing seat 38 and the electric screwdriver 1 to move downward as it recovers its deformation, preventing the locking rod 3 from disengaging from the screw and improving the tightening efficiency.

[0041] The lower part of the lifting plate 36 is also provided with a support plate 42. The locking rod 3 passes through the support plate 42 and is rotatably assembled with the support plate 42 to straighten the locking rod 3 and prevent the locking rod 3 from radially jumping when it is working.

[0042] In one embodiment, the screw fastening machine further includes a translation mechanism 14 and a screw holder 13. The screw holder 13 is connected to the worktable 10 and is spaced apart from the mounting base 11. The translation mechanism 14 is connected to the frame 9, and the mounting plate 29 is connected to the translation mechanism 14. The translation mechanism 14 is used to drive the mounting plate 29 to move between the screw holder 13 and the mounting base 11.

[0043] Specifically, the translation mechanism 14 includes a translation belt 45, a translation slider 43, and a translation screw 44. A translation rail 46 is provided on the frame 9. The translation slider 43 is slidably connected to the translation rail 46. The mounting plate 29 is connected to the translation slider 43. The translation screw 44 is helically assembled with the translation slider 43. The translation belt 45 and the translation motor 2 set on the frame 9 drive the translation screw 44 to rotate, thereby driving the translation slider 43 to move the mounting plate 29 horizontally. The screw holder 13 can move parallel on the workbench 10. Through the provided translation mechanism 14, the electric screwdriver 1 can be automatically driven to pick up screws from the screw holder 13.

[0044] In one embodiment, two electric screwdrivers 1, two lifting components 15, two mounting bases 11 and two translation mechanisms 14 are provided. The two electric screwdrivers 1 are arranged back to back, thereby enabling simultaneous fastening operations on two products 12 and improving fastening efficiency.

[0045] The screw fastening machine of this utility model embodiment works as follows: The translation mechanism 14 first drives the mounting plate 29 to move horizontally above the screw holder 13. Then, the first lifting unit drives the electric screwdriver 1 to descend to pick up the screw from the screw holder 13 and then rises. The translation mechanism 14 then drives the mounting plate 29 to move horizontally above the mounting base 11. Then, the first lifting unit drives the lifting plate 36 to drive the electric screwdriver 1 to descend and approach the mounting base 11. When it approaches the product 12, the lifting cylinder 18 drives the bearing seat 38 to descend, so that the screw on the locking head 4 abuts against the product 12. Then, the motor 2 of the electric screwdriver 1 is started to drive the locking rod 3 to rotate the screw so that the screw is fastened in the product 12. During the fastening process, the buffer spring 41 continues to drive the bearing seat 38 and the electric screwdriver 1 to descend as it recovers its deformation, preventing the locking rod 3 from disengaging from the screw and improving the fastening efficiency.

[0046] According to the screw fastening machine of this utility model embodiment, a magnetic suction component is provided on the outer periphery of the connecting part 5 of the locking rod 3. Compared with the prior art, the magnetic suction component can not only transmit magnetic force to the locking head 4, so that the locking head 4 has a certain magnetism to attract screws, but also the distance between the magnetic suction component and the screw is relatively close, so that the magnetic suction force can be directly applied to the screw attracted on the locking head 4, and the screw is not easy to fall off, thus improving the stability of the electric screwdriver 1.

[0047] In other embodiments, the buffer may be a hydraulic buffer disposed below the support 38.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw fastening machine, characterized in that, The device includes a frame (9), a workbench (10), a mounting base (11), a lifting assembly (15), and an electric screwdriver (1). The frame (9) and the mounting base (11) are both mounted on the workbench (10). The lifting assembly (15) is connected to the frame (9), and the electric screwdriver (1) is connected to the lifting assembly (15). The locking rod (3) extends in the vertical direction. The lifting assembly (15) is used to drive the electric screwdriver (1) to move closer to or away from the mounting base (11). The mounting base (11) is used to fix the product (12) to be locked. The electric screwdriver (1) includes a housing (8), a motor (2), a locking rod (3), a locking head (4), and a magnetic attractor. The motor (2) is installed inside the housing (8), and the output end of the motor (2) protrudes from the housing (8). One end of the locking rod (3) is connected to the output end. The locking head (4) has a connecting part (5) and a working part (7) connected together. The connecting part (5) is connected to the end of the locking rod (3) away from the motor (2). The magnetic attractor is arranged on the outer periphery of the connecting part (5) and is used to attract screws to the locking head (4). The magnetic component is a magnetic sleeve (6), which is sleeved on the connecting part (5).

2. The screw fastening machine according to claim 1, characterized in that, The frame (9) is provided with a mounting plate (29). The lifting assembly (15) includes a first lifting unit, which includes a lifting plate (36) and a first driving mechanism (22). The first driving mechanism (22) is connected to the mounting plate (29), and the lifting plate (36) is connected to the first driving mechanism (22). The first driving mechanism (22) can drive the lifting plate (36) to move closer to or further away from the mounting base (11). The outer shell (8) of the electric screwdriver (1) is connected to the lifting plate (36).

3. The screw fastening machine according to claim 2, characterized in that, The mounting plate (29) is provided with a first slide rail (30) extending in the vertical direction. The first drive mechanism (22) includes a first slider (31) and a first drive member (23). The first slider (31) is connected to the side of the lifting plate (36) facing the mounting plate (29). The side of the first slider (31) facing the mounting plate (29) is provided with a first slide groove (35). The first slide groove (35) is slidably connected to the first slide rail (30). The first drive member (23) is connected to the mounting plate (29). The first slider (31) is connected to the first drive member (23). The first drive member (23) is used to drive the first slider (31) to move towards or away from the mounting base (11). The lifting plate (36) is connected to the side of the first slider (31) facing away from the mounting plate (29).

4. The screw fastening machine according to claim 3, characterized in that, The lifting assembly (15) further includes a second lifting unit, which includes a second driving mechanism (17), a support seat (38), and a second slider. The lifting plate (36) has a second slide rail (37) on the side facing away from the mounting plate (29). The second slide rail (37) extends in the vertical direction. The second slider is connected to the support seat (38). The second slider has a second slide groove (39) on the side facing the lifting plate (36). The second slide groove (39) is slidably connected to the second slide rail (37). The second driving mechanism (17) is connected to the lifting plate (36). The support seat (38) is connected to the second driving mechanism (17). The second driving mechanism (17) is used to drive the support seat (38) to move closer to or away from the mounting seat (11). The outer shell (8) of the electric screwdriver (1) is connected to the support seat (38).

5. The screw fastening machine according to claim 4, characterized in that, The second drive mechanism (17) includes a lifting cylinder (18), the cylinder body (19) of the lifting cylinder (18) is connected to the lifting plate (36), and the bearing seat (38) is connected to the piston rod (20) of the lifting cylinder (18).

6. The screw fastening machine according to claim 5, characterized in that, The second drive mechanism (17) further includes a buffer and a drive rod (21). The drive rod (21) extends in the vertical direction. The top end of the drive rod (21) is connected to the bottom end of the piston rod (20). The bottom end of the drive rod (21) is connected to the support seat (38). The buffer is used to buffer the descent of the support seat (38).

7. The screw fastening machine according to claim 6, characterized in that, The buffer is a buffer spring (41). The support seat (38) is provided with a socket (40). The bottom end of the drive rod (21) is slidably inserted into the socket (40). The buffer spring (41) is sleeved on the drive rod (21). The drive rod (21) is provided with a stop. One end of the buffer spring (41) is connected to the stop, and the other end of the buffer spring (41) is connected to the support seat (38).

8. The screw fastening machine according to claim 7, characterized in that, It also includes a translation mechanism (14) and a screw holder (13), the screw holder (13) being connected to the workbench (10), the screw holder (13) being spaced apart from the mounting base (11), the translation mechanism (14) being connected to the frame (9), the mounting plate (29) being connected to the translation mechanism (14), and the translation mechanism (14) being used to drive the mounting plate (29) to move between the screw holder (13) and the mounting base (11).

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