Automatic screw locking machine and method of use thereof

Abstract

The application relates to the technical field of screw automatic locking machines, and discloses a screw automatic locking machine and a use method thereof, which comprises a supporting plate, the bottom of the supporting plate is fixedly connected with supporting legs, the top of the supporting plate is fixedly connected with a support, the top of the support is fixedly connected with a round-hole plate, the inner wall of the round-hole plate is rotationally connected with a threaded rod, the upper surface of the support is fixedly connected with a sliding plate, and the surface of the sliding plate is slidingly connected with a moving frame. The starting motor drives the threaded rod to rotate in the round-hole plate, the threaded rod pushes the moving frame to slide on the surface of the sliding plate through a screw hole frame when rotating, the screw hole frame can push the locking component to adjust the position when moving, so that the locking component can carry out material taking and locking operation, the screw hole frame slides on the surface of the sliding plate through the moving frame, the stability of the locking component when moving is improved, the surface of the locking component is provided with a tool changing component, and the convenience of screwdriver changing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic screw locking machines, in particular to an automatic screw locking machine and a use method thereof. Background Art

[0002] Automatic screw locking machine, also known as automatic screw locking machine, automatic screw feeding machine, automatic screw locking machine, automatic screw locking machine or industrial tightening system, is an automated device that uses an automated mechanism to replace manual labor to complete the removal, placement and tightening of screws. Automatic screw locking machine is widely used in many fields, mainly including the production of automotive parts, automatic assembly of computers, display screens, motors, lamps, mobile phones, printers, circuit boards, batteries, instruments, etc. In these application scenarios, automatic screw locking machine can greatly improve production efficiency, reduce production costs and improve reliability;

[0003] Current automatic screw locking machines generally use a magnetic screwdriver to attract screws. However, when the automatic screw locking machine drives the screw to move, the screw will easily shake due to inertia, causing the screw to not align with the corresponding screw hole, affecting the thread locking effect. The screw is prone to falling off due to shaking at the bottom of the screwdriver. If the automatic screw locking machine continues to operate after the screw falls off, it will cause damage to the product. Summary of the Invention

[0004] The object of the present invention is to provide an automatic screw locking machine and a method of using the same to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention provides an automatic screw locking machine and a method for using the same, comprising a support plate, wherein the bottom of the support plate is fixedly connected to a support leg, the top of the support plate is fixedly connected to a bracket, the top of the bracket is fixedly connected to a circular hole plate, the inner wall of the circular hole plate is rotatably connected to a threaded rod, the upper surface of the bracket is fixedly connected to a slide plate, the surface of the slide plate is slidably connected to a movable frame, the surface of the movable frame is fixedly connected to a screw hole frame, the end of the threaded rod is fixedly connected to a motor, and further comprising:

[0007] A locking component, wherein the locking component includes a fixing frame, a surface of the fixing frame is fixedly connected to the surface of the screw hole frame, an electric push rod is fixedly connected to the top of the inner wall of the fixing frame, an elastic rod is fixedly connected to the bottom of the electric push rod, and a sleeve rod is fixedly connected to the bottom of the elastic rod;

[0008] A tool changing component, comprising a round hole rod, the round hole rod being fixedly connected to the surface of the sleeve rod, an insert rod being slidably connected to the inner wall of the round hole rod, and a through-hole plate being sleeved on the top of the insert rod;

[0009] A pressing component is provided below the fixing frame.

[0010] Furthermore, the screw hole rack is symmetrically arranged with the threaded rod as the center, the inner wall of the screw hole rack is threadedly connected to the surface of the threaded rod, the end of the threaded rod close to the motor passes through the circular hole plate and extends to the outer end of the circular hole plate, and the bottom of the motor is fixedly connected to the top of the bracket.

[0011] Furthermore, the locking component includes a screwdriver, the upper surface of the screwdriver contacts the inner wall of the sleeve rod, the bottom of the sleeve rod is fixedly connected to a spring, the bottom of the spring is fixedly connected to a lifting frame, the bottom of the lifting frame is fixedly connected to a fixing ring, the surface of the fixing ring is fixedly connected to a bent plate, and the end of the bent plate away from the fixing ring is hinged to an inclined plate;

[0012] A triangular plate is fixedly connected to the surface of the inclined plate, and an elastic sheet is fixedly connected to the surface of the inclined plate. One end of the elastic sheet away from the inclined plate is fixedly connected to the surface of the bent plate.

[0013] Furthermore, the bottom of the sleeve rod passes through the fixing frame and extends to the outer end of the bottom of the fixing frame, the upper surface of the sleeve rod is slidably connected to the inner wall of the fixing frame, the inner wall of the lifting frame and the fixing ring is slidably connected to the surface of the screwdriver, the bottom of the screwdriver extends to below the bottom of the fixing ring, and the triangular plate is located at one end of the inclined plate close to the screwdriver.

[0014] Furthermore, the tool changing component includes a vertical plate, the vertical plate is fixedly connected to the surface of the fixed frame, the surface of the vertical plate is slidably connected to the sliding frame, the surface of the sliding frame is fixedly connected to the rectangular frame, and the surface of the rectangular frame is fixedly connected to the sliding hole frame;

[0015] The bottom of the sliding hole frame is fixedly connected to the surface of the lifting frame, and an insertion hole is provided on the upper surface of the screwdriver.

[0016] Furthermore, one end of the insertion rod away from the through-hole plate contacts the inner wall of the insertion hole, the vertical plate is located on the lower surface of the fixed frame, the inner wall of the sliding hole frame contacts the surface of the round hole rod, the end of the through-hole plate away from the insertion rod is hinged to the surface of the sliding frame, and the rectangular frame is located above the through-hole plate.

[0017] Furthermore, the pressing component includes a slide plate, the top of the slide plate is fixedly connected to the bottom of the fixed frame, the inner wall of the slide plate is slidably connected to a cylindrical rod, the bottom of the cylindrical rod is hinged to the pressing plate, and the end of the pressing plate away from the cylindrical rod is hinged to the surface of the lifting frame;

[0018] An elastic sheet is hinged on the surface of the pressing plate, and one end of the elastic sheet away from the pressing plate is hinged to the surface of the sleeve rod.

[0019] Furthermore, the top of the pressing plate is inclined toward the end away from the sleeve rod, the elastic sheet is located on the upper surface of the pressing plate, and the bottom of the pressing plate is located on the top of the lifting frame.

[0020] Furthermore, a method for using the automatic screw locking machine includes the following steps:

[0021] S1: The screw hole rack can push the locking component to adjust its position when moving, so that the locking component can perform material removal and locking operations. The screw hole rack slides on the surface of the slide through the moving rack to improve the stability of the locking component when moving;

[0022] S2: As the elastic rod moves, it pushes the sleeve rod to slide inside the fixing frame and pushes the screwdriver downward. When the screwdriver contacts the top of the screw, the set plate squeezes the spring sheet to deform, and the set plate is stuck to the top of the screw due to the elasticity of the spring sheet.

[0023] S3: When the sliding frame moves, the insertion rod is pushed toward the outer end of the round hole rod through the through-hole plate and separated from the inner wall of the hole. At this time, the screwdriver can be taken out from the inside of the sleeve rod, which improves the convenience of screwdriver replacement. The insertion rod fixes the screwdriver through the hole;

[0024] S4: The pressing plate will push the cylindrical rod to slide inside the chute plate, thereby improving the stability of the pressing plate during movement. When the pressing plate moves, it will be limited by the chute plate and push the lifting frame to move downward.

[0025] The present invention has the following beneficial effects:

[0026] The present invention starts a motor to drive the threaded rod to rotate inside the circular hole plate. When the threaded rod rotates, the movable frame is pushed to slide on the surface of the slide plate through the screw hole frame. When the screw hole frame moves, it can push the locking component to adjust its position so that the locking component can perform material picking and locking operations. The screw hole frame slides on the surface of the slide plate through the movable frame, thereby improving the stability of the locking component when moving. A tool changing component is provided on the surface of the locking component, thereby improving the convenience of replacing the screwdriver. The pressing component is pushed to move, and the pressing component can push the tool changing component to separate from the screwdriver, thereby improving the convenience of replacing the screwdriver.

[0027] When the screwdriver of the present invention is removing material from a screw, the electric push rod is started to push the elastic rod downward. When the elastic rod moves, it pushes the sleeve rod to slide inside the fixing frame and pushes the screwdriver downward. When the screwdriver contacts the top of the screw, the triangular plate squeezes the spring piece to produce deformation. The triangular plate is clamped on the top of the screw by the elasticity of the spring piece, thereby preventing shaking when the screwdriver drives the screw to move.

[0028] When the screwdriver needs to be replaced, the lifting frame is pushed downward, and the lifting frame pushes the sliding frame to slide on the surface of the vertical plate through the sliding hole frame when moving. The sliding frame pushes the insertion rod to the outer end of the round hole rod through the through-hole plate when moving and separates from the inner wall of the insertion hole. At this time, the screwdriver can be taken out from the inside of the sleeve rod, which improves the convenience of replacing the screwdriver. The insertion rod fixes the screwdriver through the insertion hole. When the screwdriver absorbs the screw, the lifting frame is pressed to move upward, and the lifting frame pushes the sliding frame upward through the sliding hole frame. When the sliding frame moves, it pushes the insertion rod to the inside of the insertion hole through the through-hole plate, which improves the stability of the screwdriver when in use.

[0029] When the present invention pushes the pressing plate to move toward the surface of the sleeve rod, the pressing plate will push the cylindrical rod to slide inside the slide plate, thereby improving the stability of the pressing plate during movement. When the pressing plate moves, it is limited by the slide plate and will push the lifting frame to move downward. At this time, the lifting frame can push the insertion rod to separate from the inner wall of the insertion hole through the sliding hole frame, thereby further improving the convenience of replacing the screwdriver.

[0030] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 Schematic diagram of the support structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the overall structure of the locking component of the present invention;

[0036] Figure 5 This is another structural schematic diagram of the locking component of the present invention;

[0037] Figure 6 For the present invention Figure 5 A magnified schematic diagram of part A in FIG;

[0038] Figure 7 This is a schematic diagram of the overall structure of the tool changing component of the present invention;

[0039] Figure 8 For the present invention Figure 7 A magnified schematic diagram of part B in FIG.

[0040] Figure 9 This is a schematic diagram of the overall structure of the pressing component of the present invention;

[0041] Figure 10 It is a schematic diagram of the process of the present invention.

[0042] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0043] In the figure: 1. Support plate; 2. Support leg; 3. Bracket; 4. Round hole plate; 5. Threaded rod; 6. Screw hole rack; 7. Moving rack; 9. Motor; 10. Slide plate; 11. Locking component; 12. Tool changing component; 13. Pressing component; 20. Electric push rod; 21. Fixed rack; 22. Elastic rod; 23. Sleeve rod; 24. Spring; 25. Lifting rack; 26. Screwdriver; 27. Fixed ring; 28. Bent plate; 29. ​​Inclined plate; 30. Triangular plate; 31. Shrapnel; 40. Vertical plate; 41. Through hole plate; 42. Insert rod; 43. Sliding hole rack; 44. Insert hole; 45. Round hole rod; 46. Sliding rack; 47. Rectangular rack; 50. Slide plate; 51. Cylindrical rod; 52. Pressing plate; 53. Elastic sheet. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] See also Figures 1-10 As shown, the present invention is an automatic screw locking machine and a method of using the same, comprising a support plate 1, a support leg 2 fixedly connected to the bottom of the support plate 1, a bracket 3 fixedly connected to the top of the support plate 1, a circular hole plate 4 fixedly connected to the top of the bracket 3, a threaded rod 5 rotatably connected to the inner wall of the circular hole plate 4, a slide plate 10 fixedly connected to the upper surface of the bracket 3, a movable frame 7 slidably connected to the surface of the slide plate 10, a screw hole frame 6 fixedly connected to the surface of the movable frame 7, a motor 9 fixedly connected to the end of the threaded rod 5, and further comprising:

[0046] The locking component 11 includes a fixing frame 21, the surface of the fixing frame 21 is fixedly connected to the surface of the screw hole frame 6, the top of the inner wall of the fixing frame 21 is fixedly connected to the electric push rod 20, the bottom of the electric push rod 20 is fixedly connected to the elastic rod 22, and the bottom of the elastic rod 22 is fixedly connected to the sleeve rod 23;

[0047] The tool changing component 12 includes a round hole rod 45, which is fixedly connected to the surface of the sleeve rod 23. The inner wall of the round hole rod 45 is slidably connected to the insertion rod 42, and the top of the insertion rod 42 is sleeved with a through-hole plate 41;

[0048] A pressing component 13 is provided below the fixing frame 21 .

[0049] The screw hole frame 6 is symmetrically arranged with the threaded rod 5 as the center. The starting motor 9 of the present invention drives the threaded rod 5 to rotate inside the circular hole plate 4. The threaded rod 5 pushes the movable frame 7 to slide on the surface of the slide plate 10 through the screw hole frame 6 when rotating. The screw hole frame 6 can push the locking component 11 to adjust its position when moving so that the locking component 11 can perform material picking and locking operations. The screw hole frame 6 slides on the surface of the slide plate 10 through the movable frame 7 to improve the stability of the locking component 11 when moving. A tool changing component 12 is provided on the surface of the locking component 11 to improve the convenience of replacing the screwdriver 26. The pressing component 13 is pushed to move, and the pressing component 13 can push the tool changing component 12 to separate from the screwdriver 26, thereby improving the convenience of replacing the screwdriver 26. The inner wall of the screw hole frame 6 is threadedly connected to the surface of the threaded rod 5. The end of the threaded rod 5 close to the motor 9 passes through the circular hole plate 4 and extends to the outer end of the circular hole plate 4. The bottom of the motor 9 is fixedly connected to the top of the bracket 3.

[0050] The locking component 11 includes a screwdriver 26, the upper surface of which contacts the inner wall of the sleeve rod 23. The bottom of the sleeve rod 23 is fixedly connected to a spring 24, the bottom of the spring 24 is fixedly connected to a lifting frame 25, the bottom of the lifting frame 25 is fixedly connected to a fixing ring 27, the surface of the fixing ring 27 is fixedly connected to a bent plate 28, and the end of the bent plate 28 away from the fixing ring 27 is hinged to an inclined plate 29.

[0051] A triangular plate 30 is fixedly connected to the surface of the inclined plate 29 . A spring piece 31 is fixedly connected to the surface of the inclined plate 29 . One end of the spring piece 31 away from the inclined plate 29 is fixedly connected to the surface of the bent plate 28 .

[0052] The bottom of the sleeve rod 23 passes through the fixing frame 21 and extends to the bottom outer end of the fixing frame 21. When the screwdriver 26 of the present invention is taking out the screw, the electric push rod 20 is started to push the elastic rod 22 to move downward. When moving, the elastic rod 22 pushes the sleeve rod 23 to slide inside the fixing frame 21 and pushes the screwdriver 26 to move downward. When the screwdriver 26 contacts the top of the screw, the triangular plate 30 will squeeze the spring piece 31 to produce deformation. The triangular plate 30 will be elastically stuck on the top of the screw by the spring piece 31 to prevent the screw from shaking when the screwdriver 26 drives the screw to move. The upper surface of the sleeve rod 23 is slidably connected to the inner wall of the fixing frame 21, and the inner wall of the lifting frame 25 and the fixing ring 27 is slidably connected to the surface of the screwdriver 26. The bottom of the screwdriver 26 extends to below the bottom of the fixing ring 27, and the triangular plate 30 is located at one end of the inclined plate 29 close to the screwdriver 26.

[0053] The tool changing component 12 includes a vertical plate 40, which is fixedly connected to the surface of the fixed frame 21, and a sliding frame 46 is slidably connected to the surface of the vertical plate 40, and a rectangular frame 47 is fixedly connected to the surface of the sliding frame 46, and a sliding hole frame 43 is fixedly connected to the surface of the rectangular frame 47;

[0054] The bottom of the sliding hole frame 43 is fixedly connected to the surface of the lifting frame 25 , and an insertion hole 44 is formed on the upper surface of the screwdriver 26 .

[0055] The end of the insertion rod 42 away from the through-hole plate 41 contacts the inner wall of the insertion hole 44. When the screwdriver 26 needs to be replaced, the lifting frame 25 is pushed downward. When the lifting frame 25 moves, it pushes the sliding frame 46 to slide on the surface of the vertical plate 40 through the sliding hole frame 43. When the sliding frame 46 moves, it pushes the insertion rod 42 toward the outer end of the round hole rod 45 through the through-hole plate 41 and separates from the inner wall of the insertion hole 44. At this time, the screwdriver 26 can be taken out from the inside of the sleeve rod 23, which improves the convenience of replacing the screwdriver 26. The insertion rod 42 is inserted into the screwdriver 26 through the insertion hole 44. To fix, when the screwdriver 26 adsorbs the screw, the lifting frame 25 will move upward under pressure. At this time, the lifting frame 25 will push the sliding frame 46 to move upward through the sliding hole frame 43. When moving, the sliding frame 46 will push the insertion rod 42 to move toward the inside of the insertion hole 44 through the through-hole plate 41, thereby improving the stability of the screwdriver 26 when in use. The vertical plate 40 is located on the lower surface of the fixed frame 21, and the inner wall of the sliding hole frame 43 is in contact with the surface of the round hole rod 45. The end of the through-hole plate 41 away from the insertion rod 42 is hinged to the surface of the sliding frame 46, and the rectangular frame 47 is located above the through-hole plate 41.

[0056] The pressing component 13 includes a slide plate 50. The top of the slide plate 50 is fixedly connected to the bottom of the fixed frame 21. A cylindrical rod 51 is slidably connected to the inner wall of the slide plate 50. A pressing plate 52 is hingedly connected to the bottom of the cylindrical rod 51. The end of the pressing plate 52 away from the cylindrical rod 51 is hingedly connected to the surface of the lifting frame 25.

[0057] An elastic piece 53 is hinged on the surface of the pressing plate 52 , and one end of the elastic piece 53 away from the pressing plate 52 is hinged to the surface of the sleeve rod 23 .

[0058] The top of the pressing plate 52 is inclined toward the end away from the sleeve rod 23. When the present invention pushes the pressing plate 52 to move toward the surface of the sleeve rod 23, the pressing plate 52 will push the cylindrical rod 51 to slide inside the slide plate 50, thereby improving the stability of the pressing plate 52 during movement. When the pressing plate 52 moves, it is limited by the slide plate 50 and pushes the lifting frame 25 to move downward. At this time, the lifting frame 25 can push the insertion rod 42 to separate from the inner wall of the insertion hole 44 through the sliding hole frame 43, further improving the convenience of replacing the screwdriver 26. The elastic sheet 53 is located on the upper surface of the pressing plate 52, and the bottom of the pressing plate 52 is located at the top of the lifting frame 25.

[0059] A method for using an automatic screw tightening machine comprises the following steps:

[0060] S1: The screw hole frame 6 can push the locking component 11 to adjust its position when moving, so that the locking component 11 can perform material removal and locking operations. The screw hole frame 6 slides on the surface of the slide plate 10 through the moving frame 7, thereby improving the stability of the locking component 11 when moving;

[0061] S2: When the elastic rod 22 moves, it pushes the sleeve rod 23 to slide inside the fixing frame 21 and pushes the screwdriver 26 downward. When the screwdriver 26 contacts the top of the screw, the set plate 30 squeezes the spring plate 31 to deform. The set plate 30 is then stuck to the top of the screw due to the elasticity of the spring plate 31.

[0062] S3: When the sliding frame 46 moves, it pushes the insertion rod 42 toward the outer end of the round hole rod 45 through the through-hole plate 41 and separates from the inner wall of the insertion hole 44. At this time, the screwdriver 26 can be taken out from the inside of the sleeve rod 23, which improves the convenience of replacing the screwdriver 26. The insertion rod 42 fixes the screwdriver 26 through the insertion hole 44;

[0063] S4: The pressing plate 52 pushes the cylindrical rod 51 to slide inside the chute plate 50, thereby improving the stability of the pressing plate 52 during movement. When the pressing plate 52 moves, it is limited by the chute plate 50 and pushes the lifting frame 25 to move downward.

[0064] When in use, the starting motor 9 drives the threaded rod 5 to rotate inside the circular hole plate 4. When the threaded rod 5 rotates, it pushes the movable frame 7 to slide on the surface of the slide plate 10 through the screw hole frame 6. The screw hole frame 6 can push the locking component 11 to adjust its position when moving, so that the locking component 11 can perform material picking and locking operations. The screw hole frame 6 slides on the surface of the slide plate 10 through the movable frame 7, which improves the stability of the locking component 11 when moving. A tool changing component 12 is provided on the surface of the locking component 11 to improve the convenience of replacing the screwdriver 26, and push the pressing component 13 to move, and the pressing component 13 can push the tool changing component 12 is separated from the screwdriver 26, which improves the convenience of replacing the screwdriver 26. When the screwdriver 26 is picking up the screw, the electric push rod 20 is started to push the elastic rod 22 downward. When the elastic rod 22 moves, it pushes the sleeve rod 23 to slide inside the fixing frame 21 and pushes the screwdriver 26 downward. When the screwdriver 26 contacts the top of the screw, the triangular plate 30 squeezes the spring piece 31 to produce deformation. The triangular plate 30 is elastically stuck on the top of the screw by the spring piece 31, avoiding the situation that the screwdriver 26 shakes when the screw moves. When the screwdriver 26 needs to be replaced, push the lifting frame 25 When the lifting frame 25 moves downward, the sliding frame 46 is pushed on the surface of the vertical plate 40 through the sliding hole frame 43 when it moves. When the sliding frame 46 moves, it pushes the insertion rod 42 to move toward the outer end of the round hole rod 45 through the through-hole plate 41 and separates from the inner wall of the insertion hole 44. At this time, the screwdriver 26 can be taken out from the inside of the sleeve rod 23, which improves the convenience of replacing the screwdriver 26. The insertion rod 42 fixes the screwdriver 26 through the insertion hole 44. When the screwdriver 26 adsorbs the screw, the lifting frame 25 is pressed upward. At this time, the lifting frame 25 pushes the sliding frame 46 upward through the sliding hole frame 43. When the pressing plate 52 is pushed toward the surface of the sleeve rod 23, the pressing plate 52 will push the cylindrical rod 51 to slide inside the slide plate 50, thereby improving the stability of the pressing plate 52 when moving. When the pressing plate 52 is limited by the slide plate 50 when moving, it will push the lifting frame 25 to move downward. At this time, the lifting frame 25 can push the insertion rod 42 to separate from the inner wall of the hole 44 through the sliding hole frame 43, thereby further improving the convenience of replacing the screwdriver 26.

[0065] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic screw locking machine, comprising a support plate (1), wherein the bottom of the support plate (1) is fixedly connected to a support leg (2), the top of the support plate (1) is fixedly connected to a bracket (3), the top of the bracket (3) is fixedly connected to a circular hole plate (4), the inner wall of the circular hole plate (4) is rotatably connected to a threaded rod (5), the upper surface of the bracket (3) is fixedly connected to a slide plate (10), the surface of the slide plate (10) is slidably connected to a movable frame (7), the surface of the movable frame (7) is fixedly connected to a screw hole frame (6), and the end of the threaded rod (5) is fixedly connected to a motor (9), characterized in that: Also includes: A locking component (11), the locking component (11) comprising a fixing frame (21), the surface of the fixing frame (21) being fixedly connected to the surface of the screw hole frame (6), the top of the inner wall of the fixing frame (21) being fixedly connected to an electric push rod (20), the bottom of the electric push rod (20) being fixedly connected to an elastic rod (22), and the bottom of the elastic rod (22) being fixedly connected to a sleeve rod (23); A tool changing component (12), the tool changing component (12) comprising a round hole rod (45), the round hole rod (45) being fixedly connected to the surface of the sleeve rod (23), an insert rod (42) being slidably connected to the inner wall of the round hole rod (45), and a through-hole plate (41) being sleeved on the top of the insert rod (42); A pressing component (13) is provided below the fixing frame (21); The locking component (11) includes a screwdriver (26), the upper surface of the screwdriver (26) contacts the inner wall of the sleeve rod (23), the bottom of the sleeve rod (23) is fixedly connected to a spring (24), the bottom of the spring (24) is fixedly connected to a lifting frame (25), the bottom of the lifting frame (25) is fixedly connected to a fixing ring (27), the surface of the fixing ring (27) is fixedly connected to a bent plate (28), and the end of the bent plate (28) away from the fixing ring (27) is hinged to a slanted plate (29); The surface of the inclined plate (29) is fixedly connected to a triangular plate (30), the surface of the inclined plate (29) is fixedly connected to a spring piece (31), and one end of the spring piece (31) away from the inclined plate (29) is fixedly connected to the surface of the bent plate (28); The bottom of the sleeve rod (23) passes through the fixing frame (21) and extends to the outer end of the bottom of the fixing frame (21), the upper surface of the sleeve rod (23) is slidably connected to the inner wall of the fixing frame (21), the inner wall of the lifting frame (25) and the fixing ring (27) are slidably connected to the surface of the screwdriver (26), the bottom of the screwdriver (26) extends to below the bottom of the fixing ring (27), and the triangular plate (30) is located at one end of the inclined plate (29) close to the screwdriver (26); The tool changing component (12) includes a vertical plate (40), the vertical plate (40) is fixedly connected to the surface of the fixed frame (21), the surface of the vertical plate (40) is slidably connected to a sliding frame (46), the surface of the sliding frame (46) is fixedly connected to a rectangular frame (47), and the surface of the rectangular frame (47) is fixedly connected to a sliding hole frame (43); The bottom of the sliding hole frame (43) is fixedly connected to the surface of the lifting frame (25), and the upper surface of the screwdriver (26) is provided with a socket (44); One end of the insertion rod (42) away from the through-hole plate (41) contacts the inner wall of the insertion hole (44); the vertical plate (40) is located on the lower surface of the fixed frame (21); the inner wall of the sliding hole frame (43) contacts the surface of the round hole rod (45); one end of the through-hole plate (41) away from the insertion rod (42) is hinged to the surface of the sliding frame (46); and the rectangular frame (47) is located above the through-hole plate (41).

2. The automatic screw tightening machine according to claim 1, characterized in that: The screw hole frame (6) is symmetrically arranged with the threaded rod (5) as the center, and the inner wall of the screw hole frame (6) is threadedly connected to the surface of the threaded rod (5). The end of the threaded rod (5) close to the motor (9) passes through the circular hole plate (4) and extends to the outer end of the circular hole plate (4). The bottom of the motor (9) is fixedly connected to the top of the bracket (3).

3. The automatic screw locking machine according to claim 2, characterized in that: The pressing component (13) includes a slide plate (50), the top of the slide plate (50) is fixedly connected to the bottom of the fixed frame (21), the inner wall of the slide plate (50) is slidably connected to a cylindrical rod (51), the bottom of the cylindrical rod (51) is hinged to a pressing plate (52), and one end of the pressing plate (52) away from the cylindrical rod (51) is hinged to the surface of the lifting frame (25); An elastic sheet (53) is hinged on the surface of the pressing plate (52), and one end of the elastic sheet (53) away from the pressing plate (52) is hinged to the surface of the sleeve rod (23).

4. The automatic screw tightening machine according to claim 3, characterized in that: The top of the pressing plate (52) is inclined toward an end away from the sleeve rod (23), the elastic sheet (53) is located on the upper surface of the pressing plate (52), and the bottom of the pressing plate (52) is located on the top of the lifting frame (25).

5. The method for using the automatic screw tightening machine according to claim 4, characterized in that: The following steps are involved: S1: The screw hole frame (6) can push the locking component (11) to adjust its position when moving, so that the locking component (11) can perform material picking and locking operations. The screw hole frame (6) slides on the surface of the slide plate (10) through the moving frame (7), thereby improving the stability of the locking component (11) when moving; S2: When the elastic rod (22) moves, the sleeve rod (23) is pushed to slide inside the fixing frame (21) and push the screwdriver (26) downward. When the screwdriver (26) contacts the top of the screw, the triangular plate (30) squeezes the spring (31) to produce deformation, and the triangular plate (30) is stuck on the top of the screw by the elasticity of the spring (31); S3: When the sliding frame (46) moves, it pushes the insertion rod (42) to move toward the outer end of the circular hole rod (45) through the through-hole plate (41) and separates from the inner wall of the insertion hole (44). At this time, the screwdriver (26) can be taken out from the inside of the sleeve rod (23), improving the convenience of replacing the screwdriver (26). The insertion rod (42) fixes the screwdriver (26) through the insertion hole (44); S4: The pressing plate (52) pushes the cylindrical rod (51) to slide inside the chute plate (50), thereby improving the stability of the pressing plate (52) during movement. When the pressing plate (52) moves, it is limited by the chute plate (50) and pushes the lifting frame (25) to move downward.

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