Automatic screw locking equipment

Abstract

The utility model belongs to the technical field of machining, and particularly relates to automatic screw locking equipment. Automatic screw locking equipment comprises a workbench, a robot is arranged on the workbench, a driving motor is arranged at the moving end of the robot, a screwdriver bit is arranged on an output shaft of the driving motor, and a clamping module is arranged on the portion, on one side of the robot, of the workbench. The clamping module comprises a supporting plate arranged on the workbench, a positioning plate fixedly connected to the supporting plate, a carrier positioning mechanism used for positioning and fixing a carrier, and an end positioning mechanism used for positioning and fixing the end of a blank. The lateral positioning mechanism is used for laterally positioning and fixing the blank; and the pressing and positioning mechanism is used for pressing and fixing the upper end surface of the blank. The automatic blank clamping device has the advantages of high blank clamping efficiency, high clamping precision and high automation level.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to an automatic screw locking device. Background Art

[0002] Before the first CNC processing of the mobile phone frame blank, four blanks must be loaded into the carrier, and the blanks must be positioned relative to the carrier and the clamping screws on the carrier must be tightened to clamp the blanks. Figure 1 As shown, the carrier 1 includes a carrier body 11, a positioning hole 111 and a lower elongated hole 112 are opened on the carrier body 11, and four groups of relatively arranged pressure plates 12 are arranged on the carrier body 11. The blank 1 21, the blank 22, the blank 3 23 and the blank 4 24 can be respectively clamped in each group of pressure plates 12, and each blank can be clamped by tightening each pressure plate screw 13 set on the pressure plate 12. In the existing process, it is necessary to manually put the carrier 1 into the manual positioning fixture, and manually load each blank between the corresponding pressure plates 12, and then use a pneumatic or electric screwdriver or other screw locking tool to tighten the pressure plate screws 13 on the carrier 1 one by one. In this process, because the manual operation requires holding the screwdriver head for a long time and the number of operations is large, the worker's work intensity is high. In addition, there are also problems such as short average working time and low work efficiency. In addition, since each blank needs to be processed at many locations, the area of ​​the corresponding blank clamped by each set of pressing plates 12 is small. When the blank is manually loaded and positioned and clamped by a manual positioning fixture, the clamping accuracy is limited, which affects the overall processing accuracy and yield of the blank to a certain extent. Utility Model Content

[0003] In order to solve the technical problems existing in the prior art, the present application provides an automatic screw locking device with high blank clamping efficiency, high clamping precision and high automation level.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An automatic screw locking device includes a workbench, a robot is arranged on the workbench, a drive motor is arranged on the movable end of the robot, a screwdriver head is arranged on the output shaft of the drive motor, and a clamping module is arranged on the workbench on one side of the robot. The clamping module includes a support plate arranged on the workbench, a positioning plate fixedly connected to the support plate, a carrier positioning mechanism for positioning and fixing the carrier, an end positioning mechanism for positioning and fixing the end of a blank, a lateral positioning mechanism for lateral positioning and fixing the blank, and a downward pressing positioning mechanism for pressing down and fixing the upper end surface of the blank.

[0006] Preferably, a loading module is provided on the workbench, and the loading module includes a rodless cylinder fixedly connected to the workbench, a base plate fixedly connected to the slider of the rodless cylinder, and a support column vertically fixedly connected to the upper end surface of the base plate, and the support plate is horizontally fixedly connected to the upper end surface of the support column. The rodless cylinder can drive the clamping module to move to the screw locking station.

[0007] Preferably, two groups of feeding modules are arranged on the workbench, and a clamping module is correspondingly arranged on each group of the feeding modules.

[0008] Preferably, a positioning column is vertically fixedly embedded on the positioning plate, and the positioning column can be inserted into a positioning hole on the carrier.

[0009] Preferably, a positioning block matching the four blanks is fixedly connected to the positioning plate, and an end positioning protrusion and an anti-fool protrusion are provided on the positioning block.

[0010] Preferably, a pushing cylinder is fixedly connected to the lower end surface of the support plate, and a guide rod of the pushing cylinder can be slidably inserted into the support plate and the positioning plate in sequence and extend to above the positioning plate.

[0011] Preferably, the carrier positioning mechanism includes a rotating pull-down cylinder fixedly connected to the lower end surface of the support plate, the guide rod of the rotating pull-down cylinder is sequentially passed through the support plate and the positioning plate and can extend to above the positioning plate, and a T-shaped clamping head is fixedly connected to the upper end of the guide rod of the rotating pull-down cylinder.

[0012] Preferably, the end positioning mechanism comprises an end positioning cylinder fixedly connected to the upper end surface of the support plate, and a guide rod of the end positioning cylinder can press one end of the blank to make it abut against the positioning block.

[0013] Preferably, the lateral positioning mechanism comprises a plurality of lateral positioning cylinders fixedly connected to the upper end surface of the support plate, and the guide rods of the lateral positioning cylinders can press against the outer side surface of the blank.

[0014] Preferably, the downward pressing and positioning mechanism comprises a downward pressing and positioning cylinder fixedly connected to the support plate, and a pressing claw is fixedly sleeved on the guide rod of the downward pressing and positioning cylinder.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can realize automatic screw tightening operation by arranging a robot, a driving motor and a screwdriver head; realize positioning of the carrier by arranging a positioning plate, and realize fixation of the carrier by arranging a carrier positioning mechanism; realize positioning and fixation of each blank in the lateral direction by arranging an end positioning mechanism; realize positioning and fixation of each blank in the lateral direction by arranging a lateral positioning mechanism; realize positioning and fixation of the blank in the vertical direction by arranging a downward positioning mechanism; through the above structure, high-precision positioning and fixation of the carrier and each blank can be realized, and through the cooperation with the robot, the driving motor and the screwdriver head, efficient and high-precision clamping of the carrier and each blank can be realized, and automatic screw locking operation can be realized, thereby improving the screw locking accuracy and efficiency;

[0017] In addition, by setting up two groups of clamping modules and corresponding loading modules arranged on the left and right, while the robot at the left station is locking screws, the right station can manually pre-install the carrier and blank into the clamping module, which relatively reduces the operation cycle time of each carrier and improves the operation efficiency. There are rodless cylinders under the left and right clamping modules. When locking, the rodless cylinders are activated to send the clamping module into the operating range of the screw locking robot. When the manual operation on the other side is carried out, there is no intersection area with the robot, and there are two-handed operation buttons to eliminate the risk of human-machine joint operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a carrier and a blank for performing screw locking operation using the utility model.

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the connection structure of the feeding module and the clamping module of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the clamping module of the utility model.

[0022] Figure 5 It is a side structural schematic diagram of the clamping module of the present utility model.

[0023] Figure 6 It is a schematic diagram of the top structure of the clamping module of the utility model.

[0024] Figure 7 It is a schematic diagram of the top view of the structure of the clamping module of the utility model after clamping the carrier and the blank.

[0025] Figure 8 It is a structural schematic diagram of the positioning plate of the utility model.

[0026] Fig. 9It is a structural schematic diagram of a carrier and a blank placed on the positioning plate of the utility model.

[0027] In the figure: 1, carrier, 11, carrier body, 111, positioning hole, 112, lower elongated hole, 12, pressure plate, 13, pressure plate screw,

[0028] 21. Blank 1, 22. Blank 2, 23. Blank 3, 24. Blank 4,

[0029] 3. Workbench, 31. Two-handed operation button,

[0030] 4. Robot, 41. Drive motor, 42. Screwdriver bit,

[0031] 5. Clamping module, 51. Support plate, 52. Positioning plate, 521. Positioning plate through hole, 522. Reference boss, 523. Positioning column, 524. Positioning block, 5241. End positioning protrusion 1, 5242. End positioning protrusion 2, 5243. Anti-fool protrusion, 53. Carrier positioning mechanism, 531. Rotating and pulling down cylinder, 532. Clamping head, 54. End positioning mechanism, 541. End positioning cylinder 1, 542. End positioning cylinder 2, 543. Push plate, 55. Lateral positioning mechanism, 551. Lateral positioning cylinder, 56. Pressing positioning mechanism, 561. Pressing positioning cylinder, 562. Pressing claw, 57. Ejecting cylinder,

[0032] 6. Feeding module, 61. Rodless cylinder, 62. Base plate, 63. Support column. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0035] See attached Figure 2 , 3As shown, an automatic screw locking device includes a workbench 3, a robot 4 is fixedly installed on the workbench 3, a drive motor 41 is fixedly installed on the moving end of the robot 4, a screwdriver head 42 is arranged on the output shaft of the drive motor 41, and a clamping module 5 is arranged on the workbench 3 on one side of the robot 4, and the clamping module 5 is used to position and clamp the carrier 1 and each blank pre-installed on the carrier 1. The working principle and connection method between the robot 4, the drive motor 41 and the screwdriver head 42 are prior art and will not be repeated here, that is, the robot 4 can drive the drive motor 41 and the screwdriver head 42 to move to the top of the pressure plate screw 13 on the corresponding carrier 1, and the drive motor 41 drives the screwdriver head 42 to rotate to lock the pressure plate screw 13.

[0036] In order to avoid interference between the operator and the robot 4 when clamping the carrier 1, a loading module 6 is fixedly installed on the workbench 3. The loading module 6 includes a rodless cylinder 61 fixedly connected to the upper end surface of the workbench 3 by bolts, a base plate 62 fixedly installed on the slider of the rodless cylinder 61 by bolts, and four support columns 63 vertically fixedly installed on the upper end surface of the base plate 62 by bolts. The clamping module 5 is fixedly installed on the support columns 63.

[0037] Therefore, through the above structure, when the carrier 1 and the blank are clamped on the clamping module 1, the rodless cylinder 61 drives the clamping module 5 to move in the direction away from the robot 4; after clamping the carrier 1 and the blank on the clamping module 1, the rodless cylinder 61 drives the clamping module 5 to move in the direction close to the robot 4 to a specified position, so as to facilitate the robot 4 to move to the screw locking station.

[0038] Furthermore, in order to further improve the efficiency of clamping and screw locking, in this embodiment, two groups of feeding modules 6 arranged on the left and right are provided on the workbench 3, and a clamping module 5 is correspondingly provided on each group of feeding modules 6. Through the above structure, while the robot 4 at the left station is screwing, the carrier 1 and the blank can be manually pre-installed into the clamping module 5 at the right station, which relatively reduces the operation cycle time of each carrier 1 and improves the operation efficiency. In addition, through the rodless cylinders 61 arranged on the left and right, the rodless cylinders 61 are actuated during locking, and the clamping module 5 is sent to the operating range of the robot 4. There is no intersection area with the robot 4 when the other side is manually operated, and by setting a two-handed operation button 31 on the workbench 3, the risk of human-machine joint operation is eliminated.

[0039] See also Figure 3 , 4As shown, the clamping module 5 includes a support plate 51 horizontally fixedly installed on the upper end surface of the support column 63 by bolts, a positioning plate 52 horizontally fixedly installed on the support plate 51 by bolts, a carrier positioning mechanism 53 for positioning and fixing the carrier 1, an end positioning mechanism 54 for positioning and fixing the end of the blank, a lateral positioning mechanism 55 for laterally positioning and fixing the blank, and a downward pressing positioning mechanism 56 for pressing down and fixing the upper end surface of the blank.

[0040] See also Figure 8 , 9 As shown, two positioning plate through holes 521 are provided in the middle of the positioning plate 52, and four reference bosses 522 are evenly distributed and integrally formed on the upper end surface of the positioning plate 52, and a positioning column 523 is vertically fixedly embedded in the upper end surface of each reference boss 522. When the carrier 1 pre-loaded with the blank is placed on the positioning plate 52, the positioning holes 111 on the carrier 1 are correspondingly sleeved on the positioning columns 523, and at this time, the lower end surface of the carrier body 11 abuts against the upper end surface of the reference boss 522, thereby forming a carrier positioning reference for the carrier 1.

[0041] In order to achieve the positioning of each blank, a positioning block 524 matching the four blanks is fixedly connected to the positioning plate 52 by bolts. When the carrier 1 is positioned on the positioning plate 52, the upper end surfaces of the four positioning blocks 524 arranged around the upper end surface of the positioning plate 52 abut against the lower end surfaces of each blank, thereby forming a blank positioning reference for each blank.

[0042] An end positioning protrusion 5241 is integrally formed and fixedly connected to the upper end surface of the positioning block 523 corresponding to the blank 1 21 and the blank 22 respectively. When the end positioning mechanism 54 performs end positioning on the blank 1 21 and the blank 22, the protruding parts on the blank 1 21 and the blank 22 abut against the corresponding end positioning protrusion 5241, thereby realizing the end positioning of the blank 1 21 and the blank 22.

[0043] The positioning blocks 523 corresponding to the blanks 3 23 and 4 24 are fixedly connected with end positioning protrusions 2 5242 by bolts. The end positioning protrusions 2 5242 are arranged on one side of the ends of the blanks 3 23 and 4 24. When the end positioning mechanism 54 positions the ends of the blanks 3 23 and 4 24, one side of the ends of the blanks 3 23 and 4 24 abuts against the corresponding end positioning protrusions 2 5242, thereby achieving the end positioning of the blanks 3 23 and 4 24. It should be noted that the "end positioning" described in this embodiment refers to positioning along the length direction of the blanks.

[0044] In order to prevent the blanks from being placed upside down, according to the different structures of the blank three 23 and the blank four 24, an anti-mistake protrusion 5243 is integrally formed on the upper end surface of the positioning block 523 corresponding to the blank three 23 and the blank four 24 respectively.

[0045] See also Figure 4 , 5 As shown in Figures 6 and 7, the carrier positioning mechanism 53 includes a rotary pull-down cylinder 531 fixedly connected to the lower end surface of the support plate 51 by bolts, and the guide rods of the rotary pull-down cylinder 531 are successively inserted into the positioning plate through holes 521 of the support plate 51 and the positioning plate 52 and can extend to the top of the positioning plate 52, and a T-shaped clamping head 532 is fixedly sleeved on the upper end of the guide rod of the rotary pull-down cylinder 531. The rotary pull-down cylinder 531 can use the existing Qilike CR25-10 rotary clamping cylinder and the corresponding clamping head 532. When placing the carrier 1, the guide rod of the rotating pull-down cylinder 531 is extended, and the clamping head 53 is arranged parallel to the lower elongated hole 112, that is, the lower elongated hole 112 on the carrier 1 can be sleeved on the guide rod of the rotating pull-down cylinder 531 through the clamping head 53; when fixing the carrier 1, the guide rod of the rotating pull-down cylinder 531 is retracted and drives the clamping head 53 to rotate 90 degrees, so that the clamping head 53 presses the upper end surface of the carrier body 11 to fix the carrier 1 on the positioning plate 52.

[0046] The end positioning mechanism 54 includes an end positioning cylinder 1 541 and an end positioning cylinder 2 542 fixedly connected to the upper end surface of the support plate 51 by bolts. The guide rods of the two end positioning cylinders 1 541 can respectively press against one end of the blank 1 21 and the blank 22 so that the other end of the blank 1 21 and the blank 22 abut against the end positioning protrusion 1 5241 on the positioning block 524. Push plates 543 are fixedly installed on the guide rods of the two end positioning cylinders 2 542 by bolts. The guide rods of the two end positioning cylinders 2 542 can respectively drive the push plates 543 to press against one end of the blank 3 23 and the blank 4 24 so that the other end of the blank 3 23 and the blank 4 24 abut against the end positioning protrusion 2 5242 on the positioning block 524.

[0047] The lateral positioning mechanism 55 includes a plurality of lateral positioning cylinders 551 fixedly connected to the upper end surface of the support plate 51 by bolts, and the guide rods of the lateral positioning cylinders 51 can press against the outer side surface of the blank. It should be noted that the "lateral positioning" described in this embodiment refers to positioning along the width direction of the blank. According to the different structures of each blank, the direction in which the lateral positioning cylinders 551 are arranged on the support plate 51 is changed accordingly. In this embodiment, in order to make each blank evenly stressed, three lateral positioning cylinders 551 are arranged for lateral positioning of each blank.

[0048] The downward positioning mechanism 56 includes a downward positioning cylinder 561 fixedly connected to the support plate 51 by bolts, and a pressing claw 562 is fixedly sleeved on the guide rod of the downward positioning cylinder 561. When the guide rod of the downward positioning cylinder 561 is retracted, the pressing claw 562 can press the upper end surface of the blank 1 21 and the blank 2 22.

[0049] Furthermore, after the screw locking operation is completed, in order to facilitate the operator to remove the carrier 1 from the positioning plate 52, a push-up cylinder 57 is fixedly connected to the lower end surface of the support plate 51 by bolts, and the guide rod of the push-up cylinder 57 can be slidably inserted into the support plate 51 and the positioning plate 52 in sequence and extend to the top of the positioning plate 52. When the guide rod of the push-up cylinder 57 is extended, the carrier 1 can be lifted, and when the guide rod of the push-up cylinder 57 is retracted, the guide rod of the push-up cylinder 57 is separated from the carrier 1.

[0050] The working process of the embodiment of the utility model is as follows:

[0051] In the initial state, the clamping modules 5 of the left and right stations are at the clamping side away from the robot 4. A carrier 1 preloaded with blanks 3 23 and 4 24 is taken from the streamline and placed on the positioning plate 52 of the left station clamping module 5. The positioning hole 111 of the carrier 1 is sleeved on the positioning column 523 to position the carrier 1. The blanks 1 21 and 22 are manually preloaded on the corresponding two sides of the carrier 1 (the blanks 1 21 and 22 cannot be preloaded in advance because the corresponding pressing plate 12 of the carrier 1 for clamping the blanks 1 21 and 22 and the clamping surface of the two are small and cannot maintain the clamping state). An anti-mistake protrusion 5243 is provided on the positioning block 524 to prevent the blanks from being mixed up in the front and back directions.

[0052] After all the 4 blanks are pre-installed, the operator presses the two-hand operation button 31 with both hands, and the rotating pull-down cylinder 531 on the clamping module 5 is actuated to fix the carrier 1 to the positioning plate 52, and then the guide rods of the two end positioning cylinders 1 541 respectively press one end of the blank 1 21 and the blank 2 22 so that the other end of the blank 1 21 and the blank 22 abut against the end positioning protrusion 1 5241 on the positioning block 524 to position the ends of the blank 1 21 and the blank 2 22. Similarly, the guide rods of the two end positioning cylinders 2 542 respectively drive the push plate 543 to press the ends of the blanks 3 23 and 4 24. One end is so that the other end of the blank 3 23 and the blank 4 24 abuts against the end positioning protrusion 2 5242 on the positioning block 524, thereby positioning the end of the blank 3 23 and the blank 4 24; the guide rod of the lateral positioning cylinder 51 is extended to press against the outer side surface of each blank, thereby positioning and fixing the side of each blank; the guide rod of the downward positioning cylinder 561 is retracted, and the pressing claw 562 can press the upper end surface of the blank 1 21 and the blank 22, so as to position and fix the upper and lower end surfaces of the blank 1 21 and the blank 22; at this moment, the carrier 1 and the four blanks are all accurately positioned and fixed in relative position;

[0053] Then the rodless cylinder 61 under the left station clamping module 5 is actuated to bring the clamping module 5, the carrier 1 and the blanks pre-installed on the carrier 1 to the working side (i.e., within the robot screwing area); while the left station clamping module 5 is performing the screwing operation, the operator can clamp the carrier 1 and the corresponding blanks on the right station clamping module 5, and the clamping process is the same as the left station clamping process;

[0054] After the screws on the left station clamping module 5 are tightened, the corresponding rodless cylinder 61 is activated to bring the left station clamping module 5, the carrier 1 and the blanks locked on the carrier 1 to the clamping side, and then the downward positioning cylinder 561, the lateral positioning cylinder 551, the end positioning cylinder 1 541, and the end positioning cylinder 2 542 are activated to release the fixation of each blank, and the rotating pull-down cylinder 531 is activated to release the fixation of the carrier 1. When the guide rod of the ejection cylinder 57 is extended, the carrier 1 can be lifted to facilitate the operator to take it out. Carrier 1, the operator puts the locked carrier 1 into the black plastic tray in the special trolley for transporting the locked products on the side of the automatic screw locking equipment (after a certain number of them are collected, they will be transported to the CNC processing area for processing by a dedicated person); then, the clamping module 5 with pre-installed blanks at the right station is driven by the corresponding rodless cylinder 61 to the operating side for screw locking operations, and the operator can pre-install new blanks in the clamping module 5 at the left station, thereby relatively shortening the operating cycle time of each carrier and improving operating efficiency.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic screw locking device, comprising a workbench, characterized in that: A robot is arranged on the workbench, a driving motor is arranged at the moving end of the robot, a screwdriver head is arranged on the output shaft of the driving motor, and a clamping module is arranged on the workbench on one side of the robot. The clamping module includes a support plate arranged on the workbench, a positioning plate fixedly connected to the support plate, a carrier positioning mechanism for positioning and fixing the carrier, an end positioning mechanism for positioning and fixing the end of the blank, a lateral positioning mechanism for laterally positioning and fixing the blank, and a downward pressing positioning mechanism for pressing down and fixing the upper end surface of the blank.

2. According to claim 1, an automatic screw locking device is characterized in that: A loading module is arranged on the workbench, and the loading module includes a rodless cylinder fixedly connected to the workbench, a base plate fixedly connected to the slider of the rodless cylinder, a support column vertically fixedly connected to the upper end surface of the base plate, and the support plate is horizontally fixedly connected to the upper end surface of the support column. The rodless cylinder can drive the clamping module to move to the screw locking station.

3. According to claim 2, the automatic screw locking device is characterized in that: Two groups of feeding modules are arranged on the workbench, and a clamping module is correspondingly arranged on each group of feeding modules.

4. The automatic screw locking device according to claim 1, characterized in that: A positioning column is vertically fixedly embedded on the positioning plate, and the positioning column can be inserted into a positioning hole on the carrier.

5. The automatic screw locking device according to claim 1, characterized in that: A positioning block matching the four blanks is fixedly connected to the positioning plate, and an end positioning protrusion and an anti-fool protrusion are arranged on the positioning block.

6. The automatic screw locking device according to claim 1, characterized in that: A material-ejecting cylinder is fixedly connected to the lower end surface of the support plate, and a guide rod of the material-ejecting cylinder can be slidably penetrated in the support plate and the positioning plate in sequence and extend to above the positioning plate.

7. The automatic screw locking device according to claim 1, characterized in that: The carrier positioning mechanism includes a rotating pull-down cylinder fixedly connected to the lower end surface of the support plate. The guide rod of the rotating pull-down cylinder is sequentially inserted into the support plate and the positioning plate and can extend to above the positioning plate. A T-shaped clamping head is fixedly connected to the upper end of the guide rod of the rotating pull-down cylinder.

8. The automatic screw locking device according to claim 5, characterized in that: The end positioning mechanism comprises an end positioning cylinder fixedly connected to the end surface of the support plate, and a guide rod of the end positioning cylinder can press one end of the blank to make it abut against the positioning block.

9. The automatic screw locking device according to claim 1, characterized in that: The lateral positioning mechanism comprises a plurality of lateral positioning cylinders fixedly connected to the end surface of the support plate, and the guide rods of the lateral positioning cylinders can press against the outer side surface of the blank.

10. The automatic screw locking device according to claim 1, characterized in that: The downward pressing and positioning mechanism comprises a downward pressing and positioning cylinder fixedly connected to the support plate, and a pressing claw is fixedly sleeved on the guide rod of the downward pressing and positioning cylinder.

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