Screw tool

Abstract

The utility model discloses a screw tool, relates to the technical field of screw fastening, and aims to solve the problem of low efficiency of fastening a screw on an operated device in the prior art. The screw tool comprises a base, a positioning jig, a supporting column, a cross beam, a connecting plate, a first adjusting mechanism and an air screwdriver assembly, the positioning jig is installed on the top face of the base, and the positioning jig is used for installing a device to be operated; the number of the supporting columns is two, and the two supporting columns are oppositely installed on the top face of the base. The cross beam is mounted between the two supporting columns; the connecting plate is mounted on the cross beam; the first adjusting mechanism is mounted on the connecting plate; the air screwdriver assembly is installed on the first adjusting mechanism, the first adjusting mechanism is used for driving the air screwdriver assembly to move in the direction close to the positioning jig or in the direction away from the positioning jig, and the air screwdriver assembly is used for installing a fastener on a device to be operated. According to the invention, the fastener can be fastened on the operated device more quickly and efficiently.

Description

Technical Field

[0001] This application relates to the field of screw fastening technology, and more specifically, to a screw tooling. Background Technology

[0002] In the product manufacturing process, tightening screws on the manipulated device is a common procedure, where the manipulated device can be a certain workpiece.

[0003] In related technologies, tightening screws on the operated device usually involves first installing the operated device on a fixed base, then manually loading the screws into the head of the pneumatic screwdriver assembly, and then pressing the pneumatic screwdriver assembly with the screws down onto the corresponding position of the operated device to finally tighten the screws in the corresponding position of the operated device.

[0004] However, the efficiency of tightening screws on the manipulated device in related technologies is low. Utility Model Content

[0005] The main objective of this application is to provide a screw tooling that addresses the technical problem of low efficiency in fastening screws on manipulated devices in the prior art.

[0006] To solve the above-mentioned technical problems, this application provides a screw fixture, the screw fixture comprising:

[0007] Base;

[0008] A positioning fixture is installed on the top surface of the base, and the positioning fixture is used to install the device to be operated;

[0009] The base has two support columns, which are mounted opposite each other on the top surface of the base.

[0010] A crossbeam is installed between the two support columns;

[0011] A connecting plate is installed on the crossbeam;

[0012] A first adjustment mechanism is mounted on the connecting plate;

[0013] A pneumatic screwdriver assembly is mounted on the first adjustment mechanism. The first adjustment mechanism is used to move the pneumatic screwdriver assembly toward the positioning fixture or away from the positioning fixture. The pneumatic screwdriver assembly is used to install fasteners on the device to be operated.

[0014] In one possible implementation, the screw fixture further includes:

[0015] A telescopic cylinder, which is mounted on the connecting plate;

[0016] A pressure plate is mounted on the piston rod of the telescopic cylinder, which drives the pressure plate to move toward the positioning fixture or away from the positioning fixture.

[0017] In one possible implementation, the connecting plate has a vertically oriented sliding groove, and the first adjusting mechanism includes a first motor mounted on the top surface of the connecting plate, a first lead screw mounted on the motor shaft of the first motor, a first nut mounted on the first lead screw, a first connecting block mounted on the first nut, and a portion of the first connecting block extending into the sliding groove.

[0018] In one possible implementation, the screw fixture further includes a second adjustment mechanism, which is installed inside the base and connected to the positioning fixture. The second adjustment mechanism is used to adjust the positioning fixture to move along the length direction of the base.

[0019] In one possible implementation, the base has a first cavity extending along the length of the base, and the base is also provided with a first through groove communicating with the first cavity.

[0020] The second adjustment mechanism includes a second motor installed in the first cavity, a second lead screw extending in the length direction of the base is installed on the motor shaft of the second motor, a second nut is installed on the second lead screw, a second connecting block is installed on the second nut, and a portion of the second connecting block extends through the first through groove to connect with the positioning fixture.

[0021] In one possible implementation, the second connecting block includes a first connecting body and at least two first connecting protrusions integrally formed with the first connecting body, the number of first through slots is at least two, and the first connecting protrusions pass through the first through slots and connect to the positioning fixture.

[0022] In one possible implementation, the screw fixture further includes a third adjustment mechanism, which is installed inside the crossbeam and connected to the connecting plate. The third adjustment mechanism is used to drive the connecting plate to move along the width direction of the base.

[0023] In one possible implementation, the crossbeam has a second cavity extending along the width direction of the base, and the crossbeam is also provided with a second through groove communicating with the second cavity.

[0024] The third adjustment mechanism includes a third motor installed in the second cavity, a third lead screw extending in the width direction of the base is installed on the motor shaft of the third motor, a third nut is installed on the third lead screw, a third connecting block is installed on the third nut, and part of the third connecting block extends through the second through groove to connect with the connecting plate.

[0025] In one possible implementation, the third connecting block includes a second connecting body and a second connecting protrusion integrally formed with the second connecting body, the second through groove extending along the width direction of the base, and the second connecting protrusion passing through the second through groove and connecting to the connecting plate.

[0026] In one possible implementation, the screw fixture further includes:

[0027] A screw feeder, wherein the screw feeder is connected to the air screwdriver head of the air screwdriver assembly via an air pipe;

[0028] A robotic arm is mounted on the top surface of the base and is used to grasp the device to be operated.

[0029] A visual inspection system, which is at least used to inspect whether the device to be operated has missing fasteners;

[0030] The controller is electrically connected to the screw feeder, the first adjustment mechanism, the robot arm, and the perspective inspection system.

[0031] Compared with the prior art, this application has the following beneficial effects:

[0032] The screw tooling proposed in this application provides a first adjustment mechanism installed on a crossbeam, and a pneumatic screwdriver assembly installed on the first adjustment mechanism. The first adjustment mechanism can drive the pneumatic screwdriver assembly to move up and down, thereby enabling the fastener to be fastened to the operated device more quickly and efficiently. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a three-dimensional structural diagram of a screw tool provided in an embodiment of this application;

[0035] Figure 2This is a top view schematic diagram of a screw tool provided in an embodiment of this application;

[0036] Figure 3 Provided for the embodiments of this application Figure 2 Schematic diagram of the cross section at point AA;

[0037] Figure 4 Provided for the embodiments of this application Figure 2 Schematic diagram of the cross section at point BB;

[0038] Figure 5 A partial schematic diagram of the second adjustment mechanism provided in an embodiment of this application;

[0039] Figure 6 A partial schematic diagram of the first adjustment mechanism and the third adjustment mechanism provided in the embodiments of this application.

[0040] Reference numerals: 1. Base; 101. First through slot; 102. First cavity; 2. Positioning fixture; 3. Operated device; 4. Support column; 5. Crossbeam; 51. Second through slot; 52. Second cavity; 6. Pneumatic screwdriver assembly; 7. First adjusting mechanism; 71. First motor; 72. First connecting block; 73. First nut; 74. First lead screw; 8. Connecting plate; 81. Slide groove; 9. Telescopic cylinder; 10. Pressure plate; 11. Screw feeder; 12. Third adjusting mechanism; 121. Third lead screw; 122. Third nut; 123. Third connecting block; 1231. Second connecting body; 1232. Second connecting protrusion; 124. Third motor; 13. Second connecting block; 131. First connecting body; 132. First connecting protrusion; 14. Second nut; 15. Second lead screw; 16. Second motor. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this application, it should be noted that the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Please see Figure 1 This application provides a screw tooling, which includes a base 1, a positioning fixture 2, a support column 4, a crossbeam 5, a connecting plate 8, a first adjustment mechanism 7, and a pneumatic screwdriver assembly 6.

[0046] Positioning fixture 2 is installed on the top surface of base 1 and is used to install the device to be operated; there are two support columns 4, which are installed opposite each other on the top surface of base 1; a crossbeam 5 is installed between the two support columns 4; a connecting plate 8 is installed on the crossbeam 5; a first adjustment mechanism 7 is installed on the connecting plate 8; a pneumatic screwdriver assembly 6 is installed on the first adjustment mechanism 7 and is used to drive the pneumatic screwdriver assembly 6 to move towards or away from the positioning fixture 2. The pneumatic screwdriver assembly 6 is used to install fasteners on the device to be operated.

[0047] The pneumatic screwdriver assembly 6 is a conventional product, and its working principle, installation method, and circuit connection are known to those skilled in the art. Fasteners can be screws, bolts, etc., and this application uses screws as an example. The support columns 4 support the crossbeam 5. The two support columns 4 are located on both sides of the positioning fixture 2, and the pneumatic screwdriver assembly 6 is located above the positioning fixture 2.

[0048] When it is necessary to tighten the screws on the operated device 3, the operated device 3 can be installed on the positioning fixture 2 first, and the part of the operated device 3 where the screws need to be tightened is located below the air screw assembly 6. Then, the screws are set on the head of the air screw assembly 6 in a conventional manner, and then the first adjustment mechanism 7 is controlled to drive the air screw assembly 6 to move towards the operated device 3.

[0049] When the head of the pneumatic screwdriver assembly 6 reaches the part of the device 3 where the screw needs to be tightened, the pneumatic screwdriver assembly 6 is activated and its head is rotated. During this process, the first adjustment mechanism 7 continues to move toward the device 3 until the pneumatic screwdriver assembly 6 tightens the screw onto the device 3. Then, the first adjustment mechanism 7 moves the pneumatic screwdriver assembly 6 away from the device 3, thus completing the task of tightening the screw on the device 3.

[0050] If it is necessary to tighten screws on the operated device 3, the other screw on the operated device 3 that needs to be tightened can be moved to the position directly below the pneumatic screwdriver assembly 6, and the above steps can be repeated to tighten multiple screws on the operated device 3.

[0051] In this embodiment, it is not necessary to manually hold the air screwdriver assembly 6 for a long time, nor is it necessary to manually move the air screwdriver assembly 6 up and down. Instead, the air screwdriver assembly 6 is installed on the crossbeam 5 through the first adjustment mechanism 7 and the connecting plate 8, and the air screwdriver assembly 6 is moved up and down by the first adjustment mechanism 7. When tightening screws at different positions of the operating device, it is only necessary to change the relative position of the operated device 3 and the air screwdriver assembly 6, thereby greatly reducing the labor intensity of tightening screws on the operated device 3 and improving the corresponding efficiency.

[0052] In some embodiments, see Figures 1-3 The screw fixture also includes a telescopic cylinder 9 and a pressure plate 10. The telescopic cylinder 9 is mounted on the connecting plate 8; the pressure plate 10 is mounted on the piston rod of the telescopic cylinder 9. The telescopic cylinder 9 drives the pressure plate 10 to move towards the positioning fixture 2 or away from the positioning fixture 2.

[0053] The telescopic cylinder 9 is a conventional cylinder, and its working principle, installation method, and circuit connection are known to those skilled in the art. After the device to be operated 3 is installed on the positioning fixture 2, the piston rod of the telescopic cylinder 9 extends towards the device to be operated 3 and drives the pressure plate 10 to move downward until the pressure plate 10 presses the device to be operated 3 firmly onto the positioning fixture 2. In this way, the pressure plate 10 can more stably fix the device to be operated 3 onto the positioning fixture 2, and the pneumatic screwdriver assembly 6 can more stably and accurately tighten the screws onto the device to be operated 3.

[0054] In some embodiments, please refer again Figures 1-3 The connecting plate 8 has a vertically oriented sliding groove 81. The first adjusting mechanism 7 includes a first motor 71 mounted on the top surface of the connecting plate 8. A first lead screw 74 is mounted on the motor shaft of the first motor 71 in a vertical direction. A first nut 73 is mounted on the first lead screw 74. A first connecting block 72 is mounted on the first nut 73. Part of the first connecting block 72 extends into the sliding groove 81.

[0055] The first motor 71 is a conventional cylinder, and its working principle, installation method, and circuit connection are known to those skilled in the art. When it is necessary to move the pneumatic screwdriver assembly 6 toward the operated device 3, the first motor 71 drives the first lead screw 74 to rotate. According to the working principle of the lead screw nut, the first nut 73 will move along the first lead screw 74 toward the operated device 3. The first nut 73 then sequentially drives the first connecting block 72 and the pneumatic screwdriver assembly 6 to move toward the operated device 3. During this process, the first connecting block 72, which extends into the slide groove 81, slides within the slide groove 81.

[0056] When it is necessary to move the air screw assembly 6 away from the operated device 3, the first motor 71 drives the first lead screw 74 to rotate in the opposite direction. According to the working principle of the lead screw nut, the first nut 73 will move along the first lead screw 74 away from the operated device 3. The first nut 73 then drives the first connecting block 72 and the air screw assembly 6 to move away from the operated device 3 in sequence. During this process, the first connecting block 72, which extends into the slide groove 81, slides in the slide groove 81.

[0057] The pneumatic screwdriver assembly 6 has a built-in servo motor. If the screw is already tightened, the servo motor inside the pneumatic screwdriver assembly 6 will automatically stop rotating. At the same time, after the motor sensor of the pneumatic screwdriver assembly 6 receives the signal that the pneumatic screwdriver assembly 6 has stopped rotating, the first motor 71 stops its downward movement and lifts the pneumatic screwdriver assembly 6 by itself. Therefore, it can ensure that screws at different heights can be tightened.

[0058] Thus, the first adjustment mechanism 7 can more conveniently and efficiently drive the air blower assembly 6 to move up and down.

[0059] In some embodiments, see Figures 1-4 The screw fixture also includes a second adjustment mechanism, which is installed inside the base 1 and connected to the positioning fixture 2. The second adjustment mechanism is used to adjust the positioning fixture 2 to move along the length of the base 1.

[0060] The second adjustment mechanism can drive the positioning fixture 2 to move along the length of the base 1, thereby driving the operated device 3 to move along the length of the base 1. In this way, it is not necessary to manually move the operated device 3 along the length of the base 1 to the bottom of the air blower assembly 6, thereby further reducing the labor intensity of manual labor and further improving the efficiency of moving the operated device 3 along the length of the base 1 to the bottom of the air blower assembly 6.

[0061] In some embodiments, see Figures 1-5The base 1 has a first cavity 102 extending along the length of the base 1, and the base 1 also has a first through groove 101 communicating with the first cavity 102; the second adjustment mechanism includes a second motor 16 installed in the first cavity 102, a second lead screw 15 extending along the length of the base 1 is installed on the motor shaft of the second motor 16, a second nut 14 is installed on the second lead screw 15, a second connecting block 13 is installed on the second nut 14, and part of the second connecting block 13 extends through the first through groove 101 to connect with the positioning fixture 2.

[0062] The second motor 16 is a conventional cylinder, and its working principle, installation method, and circuit connection are known to those skilled in the art. When the device to be operated 3 needs to be moved along the length of the base 1, the second motor 16 drives the second lead screw 15 to rotate. According to the working principle of the lead screw nut, the second nut 14 will move along the length of the second lead screw 15. The second nut 14 then sequentially drives the second connecting block 13 and the positioning fixture 2 to move along the length of the base 1. During this process, the second connecting block 13, which extends into the first through groove 101, slides within the first through groove 101.

[0063] When it is necessary to move the manipulated device 3 along the length of the base 1 in another direction, the second motor 16 drives the second lead screw 15 to rotate in the opposite direction. In this way, the second adjustment mechanism described above can more easily achieve the movement of the manipulated device 3 along the length of the base 1.

[0064] In some embodiments, see Figure 5 The second connecting block 13 includes a first connecting body 131 and at least two first connecting protrusions 132 integrally formed with the first connecting body 131. The number of first through slots 101 is at least two. The first connecting protrusions 132 pass through the first through slots 101 and are connected to the positioning fixture 2.

[0065] When the second nut 14 moves the second connecting block 13, the first connecting body 131 moves within the first cavity 102, and the two first connecting protrusions 132 pass through the first through groove 101 and connect with the positioning fixture 2. Thus, when the second connecting block 13 moves, it can drive the positioning fixture 2 to move along the length direction of the base 1.

[0066] In some embodiments, please refer again Figures 1-4 The screw fixture also includes a third adjustment mechanism 12, which is installed inside the crossbeam 5 and connected to the connecting plate 8. The third adjustment mechanism 12 is used to drive the connecting plate 8 to move along the width direction of the base 1.

[0067] The third adjustment mechanism 12 can drive the air blower assembly 6 to move along the width direction of the base 1. In this way, it is not necessary to manually move the operated device 3 along the width direction of the base 1 to move the operated device 3 under the air blower assembly 6, thereby further reducing the labor intensity of manual labor and further improving the efficiency of moving the operated device 3 along the width direction of the base 1 to the bottom of the air blower assembly 6.

[0068] In some embodiments, please refer again Figures 1-4 The crossbeam 5 has a second cavity 52 extending along the width direction of the base 1, and the crossbeam 5 is also provided with a second through groove 51 communicating with the second cavity 52; the third adjustment mechanism 12 includes a third motor 124 installed in the second cavity 52, a third lead screw 121 extending in the width direction of the base 1 is installed on the motor shaft of the third motor 124, a third nut 122 is installed on the third lead screw 121, a third connecting block 123 is installed on the third nut 122, and part of the third connecting block 123 extends through the second through groove 51 to connect with the connecting plate 8.

[0069] The third motor 124 is a conventional cylinder, and its working principle, installation method, and circuit connection are known to those skilled in the art. When the operated device 3 needs to be moved along the width direction of the base 1 to below the air screw assembly 6, the third motor 124 drives the third lead screw 121 to rotate. According to the working principle of the lead screw nut, the third nut 122 will move along the length direction of the third lead screw 121. The third nut 122 then sequentially drives the third connecting block 123, the connecting plate 8, and the air screw assembly 6 to move along the width direction of the base 1. During this process, the third connecting block 123, which extends into the second through groove 51, slides within the second through groove 51.

[0070] When it is necessary to move the blower assembly 6 in another direction along the width of the base 1, the third motor 124 drives the third lead screw 121 to rotate in the opposite direction. In this way, the blower assembly 6 can be moved in the width direction of the base 1 more easily through the aforementioned third adjustment mechanism 12.

[0071] In some embodiments, see Figure 6 The third connecting block 123 includes a second connecting body 1231 and a second connecting protrusion 1232 integrally formed with the second connecting body 1231. The second through groove 51 extends along the width direction of the base 1, and the second connecting protrusion 1232 passes through the second through groove 51 and connects with the connecting plate 8.

[0072] When the third nut 122 moves the third connecting block 123, the second connecting body 1231 moves in the second cavity 52, and the second connecting protrusion 1232 passes through the second through groove 51 and connects with the connecting plate 8. In this way, when the third connecting block 123 moves, it can drive the connecting plate 8 and the air screwdriver assembly 6 to move along the width direction of the base 1.

[0073] In some embodiments, the screw fixture also includes a screw feeder 11, a robot, a visual inspection system, and a controller.

[0074] The screw feeder 11 is connected to the air screwdriver head of the air screwdriver assembly 6 through a vent pipe; the robot arm is installed on the top surface of the base 1 and is used to grasp the device to be operated; the viewing angle inspection system is used at least to inspect the device to be operated for missing fasteners; the controller is electrically connected to the screw feeder 11, the first adjustment mechanism 7, the robot arm and the viewing angle inspection system.

[0075] The screw feeder 11, the robot, the visual inspection system, and the controller are all conventional products. The working principles, installation methods, and circuit connections of the screw feeder 11, the robot, the visual inspection system, and the controller are all known to those skilled in the art.

[0076] The screw feeder 11 blows a screw to the vicinity of the head of the air screwdriver assembly 6 through the air pipe. The air screwdriver head is magnetic and can easily attract the cross groove on the top of the screw head. In this way, the screw can be set on the head of the air screwdriver assembly 6 more efficiently, thereby further improving the efficiency of fastening the screw to the operated device 3.

[0077] The robotic arm can be used to install the manipulated device 3 onto the positioning fixture 2. After the screws on the manipulated device 3 are tightened, the robotic arm can remove the manipulated device 3 from the positioning fixture 2. This can further reduce labor intensity and improve operating efficiency.

[0078] The visual inspection system can be set on the support column 4. After the screws are tightened on the operated device 3, the visual inspection system can quickly take pictures to locate and determine whether there are any missing screws, thereby reducing the workload of inspectors in checking for missing screws.

[0079] The three-dimensional coordinates can be pre-set in the controller, enabling it to control the first motor 71, second motor 16, third motor 124, screw feeder 11, robotic arm, and perspective inspection system within the screw tooling. This allows for programmable operation, freely defining any coordinates and sequence within the tooling's range of motion. A single tooling unit can handle the needs of multiple manipulated devices 3, making it a multi-purpose device. This reduces labor costs for enterprises. Furthermore, the controller can adjust the movement speed of the pneumatic screwdriver assembly 6 according to work order requirements, further saving time and increasing production capacity.

[0080] In summary, this application can realize the relative movement between the pneumatic screwdriver assembly 6 and the operated device 3 in the Z, Y, and X axes through the first motor 71, the second motor 16, and the third motor 124. This allows the pneumatic screwdriver assembly 6 to be positioned above the part of the operated device 3 where the screw needs to be tightened more quickly and efficiently, reducing repetitive actions by the worker and thus greatly reducing the worker's workload and the efficiency of tightening screws.

[0081] When the screws of the operated device 3 are not on the same horizontal plane, the screw tightening standard is determined by the stop signal of the servo motor of the pneumatic screwdriver assembly 6. The pneumatic screwdriver assembly 6 is controlled to continuously descend or rise, which can ensure that each screw at different heights can be tightened, and it is not easy for the pneumatic screwdriver assembly 6 to continue to descend after it stops, which would damage the operated device 3.

[0082] The above are merely various embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A screwing tool, characterized in that, The screw tool comprises: a base; a positioning jig installed on the top surface of the base, the positioning jig being used for mounting a device to be operated; two support columns oppositely installed on the top surface of the base; a cross beam installed between the two support columns; a connecting plate installed on the cross beam; a first adjusting mechanism installed on the connecting plate; a wind batch assembly installed on the first adjusting mechanism, the first adjusting mechanism being used for driving the wind batch assembly to move towards the positioning jig or away from the positioning jig, the wind batch assembly being used for mounting a fastener on the device to be operated; the screw tool further comprises: a telescopic air cylinder installed on the connecting plate; a pressing plate installed on the piston rod of the telescopic air cylinder, the telescopic air cylinder driving the pressing plate to move towards the positioning jig or away from the positioning jig.

2. The screwing tool according to claim 1, wherein A vertical sliding groove is formed on the connecting plate, the first adjusting mechanism comprises a first motor installed on the top surface of the connecting plate, a vertical first lead screw is installed on the motor shaft of the first motor, a first nut is installed on the first lead screw, a first connecting block is installed on the first nut, and part of the first connecting block extends into the sliding groove.

3. The screwing tool according to claim 1, wherein The screw tool further comprises a second adjusting mechanism, the second adjusting mechanism being installed in the base, the second adjusting mechanism being connected with the positioning jig, and the second adjusting mechanism being used for adjusting the positioning jig to move along the length direction of the base.

4. The screwing tool according to claim 3, wherein A first cavity extending along the length direction of the base is formed in the base, and a first through slot in communication with the first cavity is further arranged on the base; the second adjusting mechanism comprises a second motor installed in the first cavity, a second lead screw extending along the length direction of the base is installed on the motor shaft of the second motor, a second nut is installed on the second lead screw, and a second connecting block is installed on the second nut, part of the second connecting block extending to be connected with the positioning jig through the first through slot.

5. The screwing tool according to claim 4, wherein The second connecting block comprises a first connecting body and at least two first connecting protrusions integrally formed with the first connecting body, the number of the first through slots is at least two, and the first connecting protrusions are connected with the positioning jig through the first through slots.

6. The screwing tool according to claim 1, wherein The screw tool further comprises a third adjusting mechanism, the third adjusting mechanism being installed in the cross beam, the third adjusting mechanism being connected with the connecting plate, and the third adjusting mechanism being used for driving the connecting plate to move along the width direction of the base.

7. The screwing tool according to claim 6, wherein A second cavity extending along the width direction of the base is formed in the cross beam, and a second through slot in communication with the second cavity is further arranged on the cross beam; The third adjusting mechanism comprises a third motor installed in the second cavity, a third screw rod extending to the width direction of the base is installed on the motor shaft of the third motor, a third nut is installed on the third screw rod, a third connecting block is installed on the third nut, and part of the third connecting block extends to the connecting plate through the second through slot.

8. The screwing tool according to claim 7, wherein The third connecting block comprises a second connecting body and a second connecting protrusion integrally formed with the second connecting body, the second through slot extends along the width direction of the base, and the second connecting protrusion is connected with the connecting plate through the second through slot.

9. The screwing tool according to any one of claims 1 to 8, wherein The screw tool further comprises: a screw feeder connected with the air gun head of the air gun assembly through an air pipe; a manipulator for grabbing the device to be operated; a visual angle inspection system for inspecting whether the device to be operated is missed fastened; a controller electrically connected with the screw feeder, the first adjusting mechanism, the manipulator and the visual angle inspection system.

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