A screwing machine for assembling electric meters

Abstract

The present invention relates to a screwing machine for assembling electric meters. In this screwing machine for assembling electric meters, a rotating table is rotatably arranged on a frame, a material conveying table is arranged adjacent to the frame, a feeding mechanism, a processing device and a discharging mechanism are arranged in sequence along the rotation direction of the rotating table. A feeding position, a processing position and a discharging position are arranged in sequence from the upstream to the downstream along the rotation direction of the rotating table. The feeding mechanism conveys the unassembled electric meters at the discharging port of the material conveying table to the feeding position, and transfers them to the processing device for assembly through the rotation of the rotating table. The processed electric meters are taken from the discharging position by the discharging mechanism and transferred to the discharging port of the material conveying table, and then transferred to the next working station through the material conveying table. In this way, the cooperation of the rotating table, the material conveying table, the feeding mechanism, the processing device and the discharging mechanism forms a complete assembly production line, and the screw driving process can be realized without manual operation and positioning, with high production efficiency and no waste products, which is very practical.

Description

Technical Field

[0001] The present invention relates to the field of electric meter assembly, and particularly to a screwdriver for assembling electric meters. Background Art

[0002] Smart electric meters are one of the basic devices for data collection in smart power grids. They undertake the tasks of collecting, measuring, and transmitting original electric energy data, and are the basis for realizing information integration, analysis and optimization, and information display. In addition to the basic power consumption measurement function of traditional electric meters, smart electric meters also have intelligent functions such as two-way multi-rate measurement function, user-side control function, two-way data communication function with multiple data transmission modes, and anti-stealing electricity function to adapt to the use of smart power grids and new energy.

[0003] After the production of smart electric meters, it is necessary to assemble their covers and bases. That is, first snap the cover and the base together, and then drive screws at the corners. Initially, driving screws was completed manually, which was obviously inefficient. Subsequently, some manufacturers adopted the form of cooperating a positioning tooling and an electric screwdriver, which greatly improved the assembly efficiency. However, since such an assembly form still requires manual picking and placing, with the increasing automation level currently, this combined assembly form still cannot meet the production requirements.

[0004] Therefore, there is an urgent need for a more efficient assembly method. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is, in view of the current situation of the prior art, to provide a screwdriver for assembling electric meters that can automatically grab, load, process, and unload materials.

[0006] The second technical problem to be solved by the present invention is, in view of the current situation of the prior art, to provide a screwdriver for assembling electric meters that can accurately position the electric meters to be assembled on a rotating table.

[0007] The technical solution adopted by the present invention to solve the above first technical problem is: A screwdriver for assembling electric meters, comprising:

[0008] A frame;

[0009] It further includes:

[0010] A rotating table rotatably arranged on the frame, and the rotation axis extends vertically. Along the rotation direction of the rotating table, a loading position, a processing position, and an unloading position are arranged in sequence from upstream to downstream;

[0011] A material transporting table arranged adjacent to the frame, and the material transporting table has a discharge port and a return port;

[0012] The feeding mechanism is used to convey the unassembled electric meters at the discharge port of the material conveying table to the feeding position. It is arranged upstream of the material conveying table along the rotation direction of the rotating table, and its power output end is provided with a first clamping component capable of moving back and forth between the discharge port of the material conveying table and the rotating table.

[0013] The processing device is arranged downstream of the material conveying table along the rotation direction of the rotating table and adjacent to the processing position. The processing device is provided with a cutter head for screwing screws; and

[0014] The discharging mechanism is used to remove the assembled electric meters from the discharging position and transfer them to the discharge port of the material conveying table. It is arranged downstream of the processing device along the rotation direction of the rotating table, and its power output end is provided with a second clamping component capable of moving back and forth between the rotating table and the return port of the material conveying table.

[0015] To ensure that during the rotation of the rotating table, the electric meters to be assembled located thereon will not be displaced due to the action of centrifugal force. Preferably, at least three positioning seats for limiting the electric meters are provided at intervals in the circumferential direction of the rotating table. When the rotating table rotates to make each positioning seat correspond to one of the feeding mechanism, the processing device and the discharging mechanism, the feeding position, the processing position and the discharging position are correspondingly formed on the rotating table.

[0016] To ensure that there is enough material taking space between the material conveying table and the rotating table during feeding, the feeding mechanism uses a grasping form for feeding. Preferably, the feeding mechanism further includes a feeding table and a cantilever. One end of the cantilever is rotatably connected to the feeding table, and the rotation axis extends vertically. The first clamping component is installed at the second end of the cantilever and swings back and forth between the discharge port of the material conveying table and the feeding position under the rotation of the cantilever.

[0017] To ensure that the clamping component can accurately grasp the electric meters to be assembled at different placement angles. Preferably, the first clamping component includes a support plate and a first pneumatic gripper. A machine head is provided at the second end of the cantilever. The power output end of the machine head has a connecting rod extending vertically and rotating along its own axis. The support plate is connected to the connecting rod and can rotate synchronously with the connecting rod. The first pneumatic gripper is installed on the connecting rod.

[0018] To improve the grasping efficiency, there are at least two first pneumatic grippers, which are arranged at intervals along the extending direction of the support plate. The output ends of each first pneumatic gripper have two claw heads arranged oppositely, and the two claw heads can approach each other or move away from each other to correspondingly grasp or release the electric meters to be assembled.

[0019] In order to further solve the above-mentioned second technical problem, the technical solution adopted by the present invention is as follows: The processing device further includes a limiting mechanism for positioning the electric meter and a first driving mechanism for driving the tool head to rotate. When the rotating table rotates to the state where the positioning seat is at the processing device, at least part of the limiting mechanism is located above the positioning seat and forms a limit on the electric meter to be assembled on the positioning seat. The first driving mechanism and the tool head are both located above the limiting mechanism, and the power output end of the first driving mechanism is drivingly connected to the tool head.

[0020] In order to ensure that the power of the first driving mechanism can be transmitted to the tool head, preferably, the output shaft of the first driving mechanism extends vertically. A first connecting rod is connected to the output shaft of the first driving mechanism, and a second connecting rod is connected to the tool head. The first connecting rod and the second connecting rod are linked by a joint shaft.

[0021] In order to ensure that the tool head approaches the electric meter during processing, and does not interfere with the rotation of the rotating table when taking and placing the electric meter, the processing device further includes a support frame and a second driving mechanism. The power output end of the second driving mechanism is drivingly connected to the support frame, so that the support frame moves up and down relative to the machine frame. The tool head is installed on the support frame and can move down or up synchronously with the support frame to correspondingly approach or move away from the electric meter to be assembled.

[0022] For the convenience of assembly, the support frame includes a first platen and a second platen arranged up and down. The tool head is connected to the first platen, and an avoidance notch for the tool head to pass through is provided on the second platen.

[0023] In order to ensure that the electric meter to be assembled is firmly positioned on the positioning seat, preferably, a pressing and buffering component is further provided at the bottom of the second platen. The pressing and buffering component includes a sliding sleeve, a sliding rod and an elastic member. A suspension for installing the sliding sleeve is also provided at the avoidance notch of the second platen. The sliding rod is constrained to slide up and down in the sliding sleeve, and the elastic member acts on the sliding rod and always makes the sliding rod have a tendency to move downward.

[0024] Specifically, the bottom of the sliding rod has a limiting end head, and the elastic member is a spring sleeved on the sliding rod and limitedly supported between the limiting end head and the bottom of the suspension.

[0025] In order to ensure that the electric meter to be assembled does not deflect left and right when the tool head is working, specifically, the limiting mechanism includes a third driving mechanism and a third clamping component for restricting the left and right movement of the electric meter to be assembled. The power output end of the third driving mechanism is connected to the third clamping component, and drives the third clamping component to approach or move away from the positioning seat when the rotating table rotates to the state where the positioning seat is below the tool head, so as to correspondingly limit or release the electric meter to be assembled on the positioning seat.

[0026] The clamping assembly can be in different forms. Preferably, the third clamping assembly has a limiting frame for limiting the electricity meter to be assembled. The cross-section of the limiting frame is substantially U-shaped, and clamping cylinders are respectively arranged on two side edges of the U-shape of the limiting frame. When the electricity meter to be assembled is limited within the limiting frame, the two clamping cylinders respectively abut against two side faces of the electricity meter to be assembled.

[0027] In order to achieve the limiting compensation for the last side edge of the limiting frame in the clamping assembly, the third clamping assembly further includes a feeding component arranged in the central area above the rotating table. The feeding component includes a fixing plate for connecting to the frame, a push rod cylinder arranged on the fixing plate, and a push plate. The push plate is connected to the power output end of the push rod cylinder and can move along the radial direction of the rotating table under the drive of the push rod cylinder to approach or move away from the U-shaped notch of the limiting frame. When the electricity meter to be assembled is limited within the limiting frame, the push plate abuts against the corresponding side face of the electricity meter to be assembled.

[0028] In order to achieve the discharging of the assembled electricity meter, preferably, the second clamping assembly includes a fixed table plate, a moving table plate, a second pneumatic gripper, and a fourth driving mechanism. The fixed table plate and the moving table plate are arranged up and down. The fixed table plate is connected to the frame. The second pneumatic gripper is installed at the bottom of the moving table plate. The fourth driving mechanism is installed on the fixed table plate, and its power output end is connected to the moving table plate and can drive the moving table plate to rotate relative to the fixed table plate, and the rotation axis of the moving table plate extends vertically.

[0029] In order to improve the discharging efficiency, there are two groups of the second pneumatic grippers arranged side by side. Under the rotation of the moving table plate, the two groups of second pneumatic grippers are alternately located above the discharging position or the return opening of the material conveying table.

[0030] In order to avoid the influence of the second clamping assembly on the rotation of the rotating table when not clamping, the second clamping assembly further includes a lifting mechanism. The power output end of the lifting mechanism is connected to the moving table plate and can drive the moving table plate to drive each second pneumatic gripper to move up and down synchronously.

[0031] In order to further facilitate the conveying of the electricity meter, the material conveying table includes a frame body and a conveyor belt arranged at the top of the frame body. The discharging opening and the return opening are arranged in sequence along the conveying direction of the conveyor belt.

[0032] Compared with the prior art, the advantages of the present invention are as follows: in the screwdriver for assembling electric meters, a loading position, a processing position, and an unloading position are arranged in sequence from the upstream to the downstream along the rotation direction of the rotating table. The loading mechanism conveys the unassembled electric meters at the discharge port of the material conveying table to the loading position, and transfers them to the processing device through the rotation of the rotating table for assembly. The processed electric meters are taken from the unloading position by the unloading mechanism and transferred to the unloading port of the material conveying table, and then transferred to the next working station through the material conveying table. In this way, the cooperation of the rotating table, the material conveying table, the loading mechanism, the processing device, and the unloading mechanism forms a complete assembly line, and the screw driving process can be realized without manual operation and positioning, with high production efficiency and no waste products, which is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of the screwdriver in the embodiment of the present invention;

[0034] Figure 2 is Figure 1 an overall schematic diagram from another angle;

[0035] Figure 3 is a schematic diagram of the overall structure of the loading mechanism in the embodiment of the present invention;

[0036] Figure 4 is Figure 3 an overall schematic diagram from another angle;

[0037] Figure 5 is a schematic diagram of the overall structure of the material conveying table in the embodiment of the present invention;

[0038] Figure 6 is a schematic diagram of the overall structure of the unloading mechanism in the embodiment of the present invention;

[0039] Figure 7 is a schematic diagram of the cooperation between the rotating table and the processing device in the embodiment of the present invention;

[0040] Figure 8 is a schematic diagram of the overall structure of the processing device in the embodiment of the present invention;

[0041] Figure 9 is Figure 8 an overall schematic diagram from another angle;

[0042] Figure 10 is Figure 9 a disassembled schematic diagram of a part of the structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] As Figures 1 to 10As shown, this is a preferred embodiment of the present invention. In this embodiment, the screwing machine for assembling electric meters includes a frame 1, a rotating table 2, a material transporting table 3, a feeding mechanism 4, a processing device 5, and a discharging mechanism 6. Among them, the rotating table 2 is rotatably arranged on the frame 1 and the rotation axis extends vertically. Along the upstream to downstream of its own rotation direction, a feeding position 2a, a processing position 2b, and a discharging position 2c are arranged in sequence on the rotating table 2. The above-mentioned material transporting table 3 is arranged adjacent to the frame 1. The material transporting table 3 has a discharging port 3a and a feeding-back port 3b. Specifically, the material transporting table 3 includes a frame body 31 and a conveyor belt 32 arranged on the top of the frame body 31. The discharging port 3a and the feeding-back port 3b are arranged in sequence along the conveying direction of the conveyor belt 32.

[0045] In this embodiment, at least three positioning seats 20 for limiting the electric meters are arranged at intervals in the circumferential direction of the above-mentioned rotating table 2. When the rotating table 2 rotates to make each positioning seat 20 correspond to one of the feeding mechanism 4, the processing device 5, and the discharging mechanism 6, the feeding position 2a, the processing position 2b, and the discharging position 2c are correspondingly formed on the rotating table 2.

[0046] See Figure 3 and Figure 4 , in this embodiment, the feeding mechanism 4 is used to transport the unassembled electric meters at the discharging port 3a of the material transporting table 3 to the feeding position 2a. It is arranged upstream of the material transporting table 3 along the rotation direction of the rotating table 2. Its power output end has a first clamping assembly 40 that can move back and forth between the discharging port 3a of the material transporting table 3 and the rotating table 2. The feeding mechanism 4 further includes a feeding table 41 and a cantilever 42. One end of the cantilever 42 is rotatably connected to the feeding table 41 and the rotation axis extends vertically. The first clamping assembly 40 is installed at the second end of the cantilever 42 and, under the rotation action of the cantilever 42, swings back and forth between the discharging port 3a of the material transporting table 3 and the feeding position 2a.

[0047] The above-mentioned first clamping assembly 40 can be in different forms. In this embodiment, the first clamping assembly 40 includes a support plate 401 and a first pneumatic gripper 402. A machine head 43 is arranged at the second end of the cantilever 42. The power output end of the machine head 43 has a connecting rod 44 that extends vertically and rotates along its own axis. The support plate 401 is connected to the connecting rod 44 and can rotate synchronously with the connecting rod 44. The first pneumatic gripper 402 is installed on the connecting rod 44. Among them, there are at least two first pneumatic grippers 402, and they are arranged at intervals along the extending direction of the support plate 401. And the output ends of each first pneumatic gripper 402 have two claw heads 4020 arranged oppositely. The two claw heads 4020 can move relatively closer or away from each other to correspondingly grasp or release the electric meters to be assembled.

[0048] In order to further implement the process of screwing the electric meter to be assembled, the above-mentioned processing device 5 is arranged downstream of the material conveying table 3 along the rotation direction of the rotating table 2 and adjacent to the processing position 2b. The processing device 5 has a tool head 50 for screwing the screw. In addition, in order to further ensure the positioning of the electric meter, the processing device 5 further includes a limiting mechanism 53 for positioning the electric meter and a first driving mechanism 51 for driving the tool head 50 to rotate. When the rotating table 2 rotates to the state where the positioning seat 20 is at the processing device 5, the limiting mechanism 53 is at least partially located above the positioning seat 20 and forms a limit on the electric meter to be assembled on the positioning seat 20. The first driving mechanism 51 and the tool head 50 are both located above the limiting mechanism 53, and the power output end of the first driving mechanism 51 is drivingly connected to the tool head 50. In this embodiment, the output shaft of the first driving mechanism 51 extends vertically. A first connecting rod 511 is connected to the output shaft of the first driving mechanism 51, and a second connecting rod 501 is connected to the tool head 50. The first connecting rod 511 and the second connecting rod 501 are linked by a joint shaft 502.

[0049] Of course, the processing device 5 can select the distance between the tool head 50 and the electric meter as needed. Specifically, the above-mentioned processing device 5 further includes a support frame 54 and a second driving mechanism 52. The power output end of the second driving mechanism 52 is drivingly connected to the support frame 54 to move the support frame 54 up and down relative to the frame 1. The tool head 50 is installed on the support frame 54 and can move down or up synchronously with the support frame 54 to correspondingly approach or move away from the electric meter to be assembled. The support frame 54 includes a first base plate 541 and a second base plate 542 arranged up and down. The tool head 50 is connected to the first base plate 541, and an avoidance notch 540 for the tool head 50 to pass through is provided on the second base plate 542.

[0050] In addition, in order to ensure that the electric meter does not move up and down, a pressing and buffering assembly 55 is further provided at the bottom of the above-mentioned second base plate 542. The pressing and buffering assembly 55 includes a sliding sleeve 551, a sliding rod 552, and an elastic member 553. A suspension 543 for installing the sliding sleeve 551 is further provided at the avoidance notch 540 of the second base plate 542. The sliding rod 552 is constrained to slide up and down in the sliding sleeve 551. The elastic member 553 acts on the sliding rod 552 and makes the sliding rod 552 always have a tendency to move downward. Specifically, the bottom of the sliding rod 552 has a limiting end 554, and the elastic member 553 is a spring sleeved on the sliding rod 552 and limitedly supported between the limiting end 554 and the bottom of the suspension 543.

[0051] In order to limit both sides of the electricity meter on the positioning seat, the above-mentioned limiting mechanism 53 includes a third driving mechanism 531 and a third clamping assembly 56 for restricting the left and right movement of the electricity meter to be assembled. The power output end of the third driving mechanism 531 is connected to the third clamping assembly 56, and drives the third clamping assembly 56 to approach or move away from the positioning seat 20 when the rotary table 2 rotates to a state where the positioning seat 20 is below the cutter head 50, so as to correspondingly limit or release the electricity meter to be assembled on the positioning seat 20. Specifically, the third clamping assembly 56 has a limiting frame 561 for limiting the electricity meter to be assembled. The cross-section of the limiting frame 561 is basically U-shaped, and clamping cylinders 562 are respectively arranged on both sides of the U-shaped limiting frame 561. When the electricity meter to be assembled is limited within the limiting frame 561, the two clamping cylinders 562 respectively abut against the two side surfaces of the electricity meter to be assembled. In addition, a feeding assembly 21 is arranged in the central area above the rotary table 2. The feeding assembly 21 includes a fixing plate 211 for connecting to the frame 1, a push rod cylinder 212 arranged on the fixing plate 211, and a push plate 213. The push plate 213 is connected to the power output end of the push rod cylinder 212 and can move along the radial direction of the rotary table 2 to approach or move away from the U-shaped notch of the limiting frame 561 under the drive of the push rod cylinder 212. When the electricity meter to be assembled is limited within the limiting frame 561, the push plate 213 abuts against the corresponding side surface of the electricity meter to be assembled.

[0052] In this embodiment, the blanking mechanism 6 is used to remove the assembled electricity meter from the blanking position 2c and transfer it to the blanking port of the material conveying table 3. The blanking mechanism 6 is arranged downstream of the processing device 5 along the rotation direction of the rotary table 2, and its power output end has a second clamping assembly 60 that can move back and forth between the rotary table 2 and the return port 3b of the material conveying table 3. The second clamping assembly 60 includes a fixed table plate 61, a moving table plate 62, a second pneumatic gripper 63, and a fourth driving mechanism 64. The fixed table plate 61 and the moving table plate 62 are arranged up and down. The fixed table plate 61 is connected to the frame 1. The second pneumatic gripper 63 is installed at the bottom of the moving table plate 62. The fourth driving mechanism 64 is installed on the fixed table plate 61, and its power output end is connected to the moving table plate 62 and can drive the moving table plate 62 to rotate relative to the fixed table plate 61, and the rotation axis of the moving table plate 62 extends vertically. There are two groups of the above-mentioned second pneumatic grippers 63 arranged side by side. Under the rotation of the moving table plate 62, the two groups of second pneumatic grippers 63 are alternately located above the blanking position 2c or the return port 3b of the material conveying table 3. Of course, in order to avoid affecting the rotation of the rotary table, the second clamping assembly 60 further includes a lifting mechanism 65. The power output end of the lifting mechanism 65 is connected to the moving table plate 62 and can drive the moving table plate 62 to drive each second pneumatic gripper 63 to move up and down synchronously.

[0053] During operation, the electricity meter to be assembled is conveyed by the material handling table 3. When the electricity meter moves to the discharge port 3a, the first clamping assembly 40 of the loading mechanism 4 conveys the unassembled electricity meter at the discharge port 3a to the loading position 2a of the rotary table 2. Subsequently, the rotary table 2 rotates, and the unassembled electricity meter positioned on the positioning seat 20 will synchronously rotate to the processing device 5 downstream of the loading mechanism 4; the third driving mechanism 531 drives the third clamping assembly 56 to move towards the corresponding positioning seat, and limits the electricity meter through the limiting frame 561. The push rod cylinder 212 of the pushing component 21 drives the push plate 213 to move along the radial direction of the rotary table 2 and approach the U-shaped notch of the limiting frame 561, so as to limit the electricity meter in the circumferential direction. The second driving mechanism 52 drives the support frame 54 to move downward relative to the frame 1, and makes the limiting end 554 of the pressing and buffering assembly 55 abut against the top of the electricity meter, so as to limit the electricity meter in the vertical direction. Subsequently, under the drive of the first driving mechanism 51, the tool head 50 performs the screw driving operation; after the assembly is completed, the circumferential limit and the vertical limit are withdrawn in sequence, the rotary table 2 continues to rotate until the positioning seat is at the unloading position 2c, and the second clamping assembly 60 takes down the assembled electricity meter and puts it back into the return port 3b, and the electricity meter is conveyed to the next working station.

[0054] In addition, in the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present invention. However, these terms are used here only for the convenience of description and are determined based on the example orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as illustrations and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A screwing machine for assembling electric meters, comprising: a frame (1); characterized in that it further comprises: a rotating table (2), rotatably arranged on the frame (1), and the rotation axis extends vertically. Along the rotation direction of the rotating table (2), a loading position (2a), a processing position (2b), and an unloading position (2c) are arranged in sequence from upstream to downstream; a material transporting table (3), arranged adjacent to the frame (1), and the material transporting table (3) has a discharge port (3a) and a return port (3b); a loading mechanism (4), used to convey the unassembled electric meters at the discharge port (3a) of the material transporting table (3) to the loading position (2a), arranged upstream of the material transporting table (3) along the rotation direction of the rotating table (2), and the power output end thereof has a first clamping assembly (40) capable of moving back and forth between the discharge port (3a) of the material transporting table (3) and the rotating table (2); a processing device (5), arranged downstream of the material transporting table (3) along the rotation direction of the rotating table (2) and adjacent to the processing position (2b), and the processing device (5) has a tool head (50) for screwing the screws; and an unloading mechanism (6), used to remove the assembled electric meters from the unloading position (2c) and transfer them to the unloading port of the material transporting table (3), arranged downstream of the processing device (5) along the rotation direction of the rotating table (2), and the power output end thereof has a second clamping assembly (60) capable of moving back and forth between the rotating table (2) and the return port (3b) of the material transporting table (3); at least three positioning seats (20) for limiting the electric meters are arranged at intervals in the circumferential direction of the rotating table (2). When the rotating table (2) rotates to a state where each positioning seat (20) corresponds to one of the loading mechanism (4), the processing device (5), and the unloading mechanism (6), the loading position (2a), the processing position (2b), and the unloading position (2c) are correspondingly formed on the rotating table (2); the loading mechanism (4) further comprises a loading table (41) and a cantilever (42). One end of the cantilever (42) is rotatably connected to the loading table (41), and the rotation axis extends vertically. The first clamping assembly (40) is installed at the second end of the cantilever (42), and under the rotation action of the cantilever (42), it swings back and forth between the discharge port (3a) of the material transporting table (3) and the loading position (2a); the processing device (5) further comprises a limiting mechanism (53) for positioning the electric meters and a first driving mechanism (51) for driving the tool head (50) to rotate. And when the rotating table (2) rotates to a state where the positioning seat (20) is at the processing device (5), the limiting mechanism (53) is at least partially located above the positioning seat (20) and forms a limit on the electric meter to be assembled on the positioning seat (20). The first driving mechanism (51) and the tool head (50) are both located above the limiting mechanism (53), and the power output end of the first driving mechanism (51) is drivingly connected to the tool head (50); The output shaft of the first driving mechanism (51) extends vertically. A first connecting rod (511) is connected to the output shaft of the first driving mechanism (51). A second connecting rod (501) is connected to the tool head (50). The first connecting rod (511) and the second connecting rod (501) are linked through a joint shaft (502).

2. The screwdriver according to claim 1, characterized in that: The first clamping assembly (40) includes a support plate (401) and a first pneumatic gripper (402). A machine head (43) is provided at the second end of the cantilever (42). The power output end of the machine head (43) has a connecting rod (44) that extends vertically and rotates along its own axis. The support plate (401) is connected to the connecting rod (44) and can rotate synchronously with the connecting rod (44). The first pneumatic gripper (402) is installed on the connecting rod (44).

3. The screwdriver according to claim 2, characterized in that: There are at least two first pneumatic grippers (402), which are arranged at intervals along the extending direction of the support plate (401). The output ends of the first pneumatic grippers (402) have two claw heads (4020) arranged oppositely. The two claw heads (4020) can move relatively closer or away from each other to correspondingly grasp or release the electricity meter to be assembled.

4. The screwdriver according to claim 1, characterized in that: The processing device (5) further includes a support frame (54) and a second driving mechanism (52). The power output end of the second driving mechanism (52) is drivingly connected to the support frame (54) to move the support frame (54) up and down relative to the frame (1). The tool head (50) is installed on the support frame (54) and can move down or up synchronously with the support frame (54) to correspondingly approach or move away from the electricity meter to be assembled.

5. The screwdriver according to claim 4, characterized in that: The support frame (54) includes a first base plate (541) and a second base plate (542) arranged up and down. The tool head (50) is connected to the first base plate (541). An avoidance notch (540) for the tool head (50) to pass through is provided on the second base plate (542).

6. The screwdriver according to claim 5, characterized in that: A pressing and buffering assembly (55) is further provided at the bottom of the second base plate (542). The pressing and buffering assembly (55) includes a sliding sleeve (551), a sliding rod (552) and an elastic member (553). A suspension (543) for installing the sliding sleeve (551) is further provided at the avoidance notch (540) of the second base plate (542). The sliding rod (552) is constrained to slide up and down in the sliding sleeve (551). The elastic member (553) acts on the sliding rod (552) and makes the sliding rod (552) always have a tendency to move downward.

7. The screwdriver according to claim 6, characterized in that: The bottom of the sliding rod (552) is provided with a limiting end (554), and the elastic member (553) is a spring sleeved on the sliding rod (552) and limited and supported between the limiting end (554) and the bottom of the suspension (543).

8. The screwdriver according to claim 1, characterized in that: The limiting mechanism (53) includes a third driving mechanism (531) and a third clamping assembly (56) for limiting the left and right movement of the electricity meter to be assembled. The power output end of the third driving mechanism (531) is connected to the third clamping assembly (56), and when the rotary table (2) rotates to a state where the positioning seat (20) is below the cutter head (50), it drives the third clamping assembly (56) to approach or move away from the positioning seat (20) to correspondingly limit or release the electricity meter to be assembled on the positioning seat (20).

9. The screwdriver according to claim 8, characterized in that: The third clamping assembly (56) has a limiting frame (561) for limiting the electricity meter to be assembled. The cross-section of the limiting frame (561) is substantially U-shaped, and clamping cylinders (562) are respectively arranged on the two side edges of the U-shape of the limiting frame (561). When the electricity meter to be assembled is limited within the limiting frame (561), the two clamping cylinders (562) respectively abut against the two side surfaces of the electricity meter to be assembled.

10. The screwdriver according to claim 9, characterized in that: It further includes a material pushing assembly (21) arranged in the central area above the rotary table (2). The material pushing assembly (21) includes a fixing plate (211) for connecting to the frame (1), a push rod cylinder (212) arranged on the fixing plate (211), and a push plate (213). The push plate (213) is connected to the power output end of the push rod cylinder (212) and can move along the radial direction of the rotary table (2) under the drive of the push rod cylinder (212) to approach or move away from the U-shaped notch of the limiting frame (561). When the electricity meter to be assembled is limited within the limiting frame (561), the push plate (213) abuts against the corresponding side surface of the electricity meter to be assembled.

11. The screwdriver according to claim 1, characterized in that: The second clamping assembly (60) includes a fixed table plate (61), a moving table plate (62), a second pneumatic gripper (63), and a fourth driving mechanism (64). The fixed table plate (61) and the moving table plate (62) are arranged up and down. The fixed table plate (61) is connected to the frame (1). The second pneumatic gripper (63) is installed at the bottom of the moving table plate (62). The fourth driving mechanism (64) is installed on the fixed table plate (61), and the power output end is connected to the moving table plate (62) and can drive the moving table plate (62) to rotate relative to the fixed table plate (61), and the rotation axis of the moving table plate (62) extends vertically.

12. The screwdriver according to claim 11, characterized in that: There are two groups of the second pneumatic grippers (63) arranged side by side. Under the rotation of the moving platen (62), the two groups of second pneumatic grippers (63) are alternately located above the blanking position (2c) or the return opening (3b) of the material conveying table (3).

13. The screwdriver according to claim 12, characterized in that: the second clamping assembly (60) further includes a lifting mechanism (65), the power output end of the lifting mechanism (65) is connected to the moving platen (62), and can drive the moving platen (62) to drive each second pneumatic gripper (63) to move up and down synchronously.

14. The screwdriver according to claim 1, characterized in that: the material conveying table (3) includes a frame body (31) and a conveyor belt (32) arranged at the top of the frame body (31), and the discharge opening (3a) and the return opening (3b) are arranged in sequence along the conveying direction of the conveyor belt (32).

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