Intermediate plate assembly line and assembly method for electric operating mechanism

Abstract

The present application relates to the field of motor operating mechanism assembly equipment, and in particular to an intermediate plate assembly production line and assembly method of an electric operating mechanism, wherein the intermediate plate assembly production line of the electric operating mechanism includes a rotating disc, on which a number of jigs of the same shape are fixed at equal distances around the center of the circle, a rotary riveting machine head is arranged above the rotating disc, and the rotary riveting machine head has the function of moving to the top of any jig and descending, and also includes a transfer mechanism, which has the function of rotating the intermediate plate 180° and placing the intermediate plate on any jig. The present application realizes the automatic riveting of pins on both sides of the intermediate plate in an assembly line manner, greatly improving the assembly efficiency and assembly quality; it realizes the function of the transfer mechanism to grab the intermediate plate at a specified position and place the intermediate plate at a specified position, so that the positioning accuracy of the intermediate plate is improved.

Description

Technical Field

[0001] The present application relates to the field of motor operating mechanism assembly equipment, and in particular to an intermediate plate assembly production line and an assembly method for an electric operating mechanism. Background Art

[0002] The electric operating mechanism is an accessory used for remote automatic opening and closing of circuit breakers. There are two types of electric operating mechanisms: motor operating mechanism and electromagnet operating mechanism. Whether it is an electromagnet or a motor, their attraction and rotation direction are the same, and the purpose of closing and opening is achieved only by the position of the cam inside the electric operating mechanism.

[0003] Figure 1 The intermediate plate 1 of the electric operating mechanism has two bent ears 50 and a protruding plate 49 formed by stamping. Four pins 2 (i.e., the first pin shaft 3, the second pin shaft 4, the third pin shaft 5, and the fourth pin shaft 6) are assembled on the intermediate plate 1, two on the front and two on the back. After the four pins are inserted into the corresponding holes on the intermediate plate, they need to be riveted and fixed. Currently, the two pins on the same side of the intermediate plate are manually positioned on the jig, and then the intermediate plate is inserted from top to bottom on the top of the two pins, and then the riveting machine is started for riveting, and then the remaining two pins are riveted in the same way, which is very inefficient. Summary of the invention

[0004] In order to solve the problem of low efficiency of riveting pins on both sides of an intermediate plate caused by manual assembly, the present application provides an intermediate plate assembly production line and an assembly method of an electric operating mechanism.

[0005] In a first aspect, the present application provides an intermediate plate assembly production line of an electric operating mechanism, which adopts the following technical solution:

[0006] An intermediate plate assembly production line with an electric operating mechanism comprises a rotating disc, on which a plurality of jigs of the same shape are fixed at equal distances around the center of the circle, a riveting head is arranged above the rotating disc, and the riveting head has the function of moving to the top of any jig and descending, and also comprises a transfer mechanism, which has the function of rotating the intermediate plate by 180 degrees and placing the intermediate plate on any jig;

[0007] It also includes a first feeding station, a second feeding station, a third feeding station, a fourth feeding station, and a fifth feeding station arranged around the rotating disc, and all the jigs pass through the first feeding station, the second feeding station, the third feeding station, and the fourth feeding station in turn;

[0008] The fixture is provided with a first positioning pin hole, a second positioning pin hole, a third positioning pin hole, and a fourth positioning pin hole. The first feeding station is used to insert the first pin shaft into the first positioning pin hole, the second feeding station is used to insert the second pin shaft into the second positioning pin hole, the third feeding station is used to insert the third pin shaft into the third positioning pin hole, the fourth feeding station is used to insert the fourth pin shaft into the fourth positioning pin hole, and the fifth feeding station is used for the transfer mechanism to grab the middle plate;

[0009] There is a jig between the jig facing the second feeding station and the jig facing the third feeding station. The position of the jig between the second feeding station and the third feeding station is the first riveting station; the next position of the jig facing the fourth feeding station after rotation is the second riveting station.

[0010] By adopting the above technical solution, the first pin shaft and the second pin shaft are inserted into the jig in sequence by using automatic equipment such as a manipulator. When the jig with the first pin shaft and the second pin shaft inserted is transferred to the first riveting station, the transfer mechanism transfers the middle plate from the fifth feeding station to the first riveting station, and the rotary riveting machine head rivets the top of the first pin shaft and the second pin shaft to the middle plate. After the riveting is completed, the transfer mechanism removes the middle plate from the jig, so that the jig is rotated to the next station without load.

[0011] Then, automatic equipment such as robots insert the third pin and the fourth pin into the jig in turn. When the jig with the third pin and the fourth pin is transferred to the second riveting station, the transfer mechanism flips the middle plate 180° and places it on the second riveting station. The rotary riveting machine head rivets the top of the third pin and the fourth pin to the middle plate. After the riveting is completed, the transfer mechanism takes the middle plate from the jig and sends it to the finished product collection area.

[0012] The above-mentioned operation of riveting the pins on both sides of the middle plate completely replaces manual work with automated equipment, thereby solving the problem of low efficiency in riveting the pins on both sides of the middle plate caused by manual assembly.

[0013] Optionally, it also includes a rotary riveting machine guide frame, on which a first driving mechanism, a second driving mechanism, and a third driving mechanism are provided. The first driving mechanism is used to drive the second driving mechanism to move horizontally, and the second driving mechanism is used to drive the third driving mechanism to move horizontally. The driving direction of the first driving mechanism is perpendicular to the driving direction of the second driving mechanism, and the third driving mechanism is used to drive the rotary riveting machine head to move vertically.

[0014] By adopting the above technical solution, the rotation of the riveting machine head can be moved in six directions, namely, forward, backward, left, right, up and down, so that the rotation of the riveting machine head can be moved to any jig for riveting work.

[0015] Optionally, the first driving mechanism includes a first guide rail, a first slider, and a drag chain, the end of the drag chain and the first slider are fixedly connected to the second driving mechanism, and the first slider is slidably connected to the first guide rail.

[0016] By adopting the above technical solution, it is achieved that the rotary riveting machine head is driven to move along the length direction of the first guide rail.

[0017] Optionally, the second driving mechanism includes a first motor, a first lead screw, a first nut seat, a second guide rail, and a second slider, the second slider and the first nut seat are fixedly connected to the third driving mechanism, the first nut seat is threadedly connected to the first lead screw, the first motor is driven to connect to the first lead screw, and the first lead screw is perpendicular to the first guide rail;

[0018] The third driving mechanism includes a second motor, a second lead screw, a second nut seat, a third guide rail, and a third slider. The third slider and the second nut seat are both fixedly connected to the riveting machine head. The second nut seat is threadedly connected to the second lead screw. The second motor drives the second lead screw.

[0019] By adopting the above technical solution, the second driving mechanism can drive the rotary riveting machine head to move along the length direction of the first lead screw, and the third driving mechanism can drive the rotary riveting machine head to move vertically.

[0020] Optionally, a first telescopic cylinder with a fixed position is provided above the rotating disc, and a lifting seat is fixed on the piston rod of the first telescopic cylinder;

[0021] A third motor is fixed on the lifting seat, a rotating shaft of the third motor is fixedly connected to the rotating plate, the rotating shaft of the third motor is coaxial with the rotating disc, and the rotating shaft of the third motor and the piston rod of the first telescopic cylinder are both perpendicular to the upper surface of the rotating disc;

[0022] The second telescopic cylinder is fixed on the rotating plate, the rotating cylinder is fixed on the piston rod of the second telescopic cylinder, the rotating cylinder drives the connecting claw cylinder, and the claw cylinder is used for clamping the middle plate.

[0023] By adopting the above technical solution, the function of the robot arm to clamp and place the middle plate from any fixture is realized, and the function of the robot arm to flip the clamped middle plate by 180 degrees is also realized.

[0024] Optionally, the rising seat is provided with a first proximity switch, a second proximity switch and a third proximity switch, the first proximity switch is used to stop the rotating plate when it rotates to point to the fifth feeding station, the second proximity switch is used to stop the rotating plate when it rotates to point to the first riveting station, and the third proximity switch is used to stop the rotating plate when it rotates to point to the second riveting station.

[0025] By adopting the above technical solution, the transfer mechanism can accurately stop at the fifth feeding station to clamp the middle plate, accurately stop at the first riveting station to rivet the first pin and the second pin, and accurately stop at the second riveting station to rivet the third pin and the fourth pin.

[0026] Optionally, the first telescopic cylinder is fixed on a guide rail frame of the rotary riveting machine.

[0027] By adopting the above technical solution, the first telescopic cylinder is fixed without the need to set up an additional bracket, thus saving costs and space.

[0028] Optionally, the two clamping jaws of the clamping jaw cylinder enclose two layers of clamping gaps with different heights and connected to each other, and the two layers of clamping gaps are used to clamp the middle plate and the protruding plate respectively. The clamping jaws are also provided with grooves for inserting ears.

[0029] By adopting the above technical solution, the function of the clamping claw cylinder grabbing the middle plate at the specified position and placing the middle plate at the specified position is realized, so that the positioning accuracy of the middle plate is improved.

[0030] In a second aspect, the present application provides a method for assembling an intermediate plate of an electric operating mechanism, which adopts the following technical solution:

[0031] A method for assembling an intermediate plate of an electric operating mechanism, the steps are as follows:

[0032] Step 1. When the rotating disc stops rotating, the robot or automatic equipment installs the first pin shaft on a certain fixture, and then the rotating disc starts rotating;

[0033] Step 2. The rotating disc stops rotating when it rotates to a specified angle, and a robot or automatic device installs a second pin on the fixture equipped with the first pin, and then the rotating disc starts rotating;

[0034] Step 3. When the jig equipped with the first pin and the second pin reaches the first riveting station, the rotating disc stops rotating;

[0035] Step 4. The transfer mechanism grabs the middle plate from the fifth feeding station and places it on the jig at the first riveting station;

[0036] Step 5. Rivet the top of the first pin and the second pin onto the middle plate with a riveting machine head;

[0037] Step 6. The transfer mechanism removes the middle plate from the jig at the first riveting station, and then the rotating disc starts to rotate;

[0038] Step 7. The rotating disc stops rotating when it rotates to a specified angle, and the robot or automatic device installs the third pin on the fixture, and then the rotating disc starts rotating;

[0039] Step 8. The rotating disc stops rotating when it rotates to a specified angle, and the robot or automatic device installs the fourth pin on the fixture equipped with the third pin, and then the rotating disc starts rotating;

[0040] Step 9. When the jig equipped with the third pin and the fourth pin reaches the second riveting station, the rotating disc stops rotating;

[0041] Step 10. The transfer mechanism flips the middle plate 180° and places it on the jig at the second riveting station;

[0042] Step 11. Use the riveting machine head to rivet the top of the third pin and the fourth pin to the middle plate.

[0043] By adopting the above technical solution, the pins on both sides of the middle plate can be riveted automatically on an assembly line, which greatly improves the assembly efficiency and quality.

[0044] In summary, the present application includes at least one of the following beneficial technical effects:

[0045] 1. The assembly line automatically rivets the pins on both sides of the middle plate, greatly improving the assembly efficiency and quality;

[0046] 2. The transfer mechanism can grab the middle plate at the designated position and place the middle plate at the designated position, thereby improving the positioning accuracy of the middle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a front view of the middle plate equipped with pins in the background technology of this application;

[0048] Figure 2 It is a schematic diagram of the overall structure of the intermediate plate assembly production line in the embodiment of the present application;

[0049] Figure 3 is a positional relationship diagram of the middle plate and the fixture in the embodiment of the present application;

[0050] Figure 4 It is a schematic diagram of the overall structure of the intermediate plate assembly production line in the embodiment of the present application;

[0051] Figure 5 It is a structural schematic diagram of the transfer mechanism in the embodiment of the present application;

[0052] Figure 6 yes Figure 5 Schematic diagram of the structure after hiding the middle plate.

[0053] Explanation of the reference numerals: 1. middle plate; 2. pin; 3. first pin shaft; 4. second pin shaft; 5. third pin shaft; 6. fourth pin shaft; 7. rotating disc; 8. fixture; 9. riveting machine head; 10. transfer mechanism; 11. first feeding station; 12. second feeding station; 13. third feeding station; 14. fourth feeding station; 15. fifth feeding station; 16. first positioning pin hole; 17. second positioning pin hole; 18. third positioning pin hole; 19. fourth positioning pin hole; 20. guide rail frame of riveting machine; 21. first driving mechanism; 22. second driving mechanism; 23. third driving mechanism; 24. first guide rail; 25. first slider; 26. drag Chain; 27, first motor; 28, first lead screw; 29, first nut seat; 30, second guide rail; 31, second slider; 32, second motor; 33, second lead screw; 34, second nut seat; 35, third guide rail; 36, third slider; 37, first telescopic cylinder; 38, rising seat; 39, third motor; 40, rotating plate; 41, first riveting station; 42, second telescopic cylinder; 43, rotating cylinder; 44, clamping cylinder; 45, second riveting station; 46, first proximity switch; 47, second proximity switch; 48, third proximity switch; 49, protruding plate; 50, ear; 51, clamping claw; 52, gap; 53, groove. DETAILED DESCRIPTION

[0054] The following is combined with Figure 1-6 This application is described in further detail.

[0055] The embodiment of the present application discloses an intermediate plate assembly production line of an electric operating mechanism. Figure 2 The intermediate plate 1 assembly production line includes a rotating disc 7, and at least six jigs 8 are fixed at equal distances around the center of the rotating disc 7 on the edge of the upper surface of the rotating disc 7, and all the jigs 8 have the same shape.

[0056] Reference Figure 3 The top surface of the fixture 8 has a first positioning pin hole 16, a second positioning pin hole 17, a third positioning pin hole 18, and a fourth positioning pin hole 19. The first positioning pin hole 16 is used to insert the first pin shaft 3 for positioning, the second positioning pin hole 17 is used to insert the second pin shaft 4 for positioning, the third positioning pin hole 18 is used to insert the third pin shaft 5 for positioning, and the fourth positioning pin hole 19 is used to insert the fourth pin shaft 6 for positioning.

[0057] Reference Figure 2The intermediate plate assembly production line further includes a riveting machine guide frame 20, and a first driving mechanism 21, a second driving mechanism 22 and a third driving mechanism 23 are arranged on the top of the riveting machine guide frame 20. The first driving mechanism 21 is used to drive the second driving mechanism 22 to move horizontally, the second driving mechanism 22 is used to drive the third driving mechanism 23 to move horizontally, the riveting machine head 9 is connected to the third driving mechanism 23, and the third driving mechanism 23 is used to drive the riveting machine head 9 to move vertically.

[0058] Reference Figure 2 The first driving mechanism 21 includes a first guide rail 24, a first slider 25 and a drag chain 26. The first guide rail 24 is horizontally fixed to the top of the rotary riveting machine guide frame 20. The first slider 25 is slidably connected to the first guide rail 24. The end of the drag chain 26 and the first slider 25 are fixedly connected to the second driving mechanism 22.

[0059] Reference Figure 4 The second driving mechanism 22 includes a first motor 27, a first lead screw 28, a first nut seat 29, a second guide rail 30 and a second slider 31. The first nut seat 29 is threadedly connected to the first lead screw 28. The first lead screw 28 is driven to rotate by the first motor 27, and the first lead screw 28 is perpendicular to the first guide rail 24. The end of the drag chain 26 and the first slider 25 are fixedly connected to the second guide rail 30 of the second driving mechanism 22.

[0060] Reference Figure 2 The third driving mechanism 23 includes a second motor 32, a second lead screw 33, a second nut seat 34, a third guide rail 35 and a third slider 36. The second lead screw 33 is vertical, and the second nut seat 34 is threadedly connected to the second lead screw 33. The second lead screw 33 is driven to rotate by the second motor 32. The second slider 31 and the first nut seat 29 are fixedly connected to the second motor 32 of the third driving mechanism 23 (see Figure 4 ), the third slider 36 and the second nut seat 34 are both fixedly connected to the riveting machine head 9.

[0061] Reference Figure 2 The rotary riveting machine head 9 is located above the rotating disk 7. Under the action of the first driving mechanism 21, the second driving mechanism 22, and the third driving mechanism 23, the rotary riveting machine head 9 can be moved to the top of any jig 8 to perform riveting work.

[0062] Reference Figure 2, the first feeding station 11, the second feeding station 12, the third feeding station 13, the fourth feeding station 14, and the fifth feeding station 15 are sequentially arranged around the rotating disc 7 in a clockwise direction. When the rotating disc 7 rotates, all the jigs 8 pass through the first feeding station 11, the second feeding station 12, the third feeding station 13, and the fourth feeding station 14 in turn. There is a jig 8 between the jig 8 facing the second feeding station 12 and the jig 8 facing the third feeding station 13. The position of the jig 8 between the second feeding station 12 and the third feeding station 13 is the first riveting station 41, and the next position of the jig 8 facing the fourth feeding station 14 after rotation is the second riveting station 45.

[0063] Reference Figure 2 The first feeding station 11, the second feeding station 12, the third feeding station 13, and the fourth feeding station 14 are all a vibrating feeding plate. In cooperation with a manipulator or other automatic equipment, the first feeding station 11 is used to insert the first pin 3 into the first positioning pin hole 16, the second feeding station 12 is used to insert the second pin 4 into the second positioning pin hole 17, the third feeding station 13 is used to insert the third pin 5 into the third positioning pin hole 18, and the fourth feeding station 14 is used to insert the fourth pin 6 into the fourth positioning pin hole 19.

[0064] Reference Figure 2 A transfer mechanism 10 is also provided above the rotating disc 7, and the transfer mechanism 10 is used to grab the intermediate plate 1 without the pin 2 from the fifth feeding station 15. A first telescopic cylinder 37 is provided above the rotating disc 7, and the first telescopic cylinder 37 is fixed on the guide rail frame 20 of the riveting machine. A lifting seat 38 is fixed on the vertically downward piston rod of the first telescopic cylinder 37, and a third motor 39 is fixed on the lifting seat 38. The transfer mechanism 10 is fixed on the rotating shaft of the third motor 39. The rotating shaft of the third motor 39 is coaxial with the rotating disc 7, and the rotating shaft of the third motor 39 and the piston rod of the first telescopic cylinder 37 are both perpendicular to the upper surface of the rotating disc 7.

[0065] Reference Figure 2 and Figure 5 The transfer mechanism 10 includes a rotating plate 40, a second telescopic cylinder 42, a rotating cylinder 43 and a clamping cylinder 44. The rotating plate 40 is fixed to the rotating shaft of the third motor 39, the second telescopic cylinder 42 is fixed to the rotating plate 40, the rotating cylinder 43 is fixed to the piston rod of the second telescopic cylinder 42, and the clamping cylinder 44 is fixed to the rotating disk of the rotating cylinder 43. The clamping cylinder 44 is used to clamp the middle plate 1.

[0066] Reference Figure 5 and Figure 6The two clamping jaws 51 of the clamping jaw cylinder 44 enclose two layers of interlinked gaps 52 of different heights, and the two layers of gaps 52 are used to clamp the middle plate 1 and the protruding plate 49 respectively. The clamping jaws 51 are also provided with grooves 53 for the ears 50 to be inserted, so that the clamping jaw cylinder 44 can grasp the middle plate 1 at the specified position and place the middle plate 1 at the specified position, thereby improving the positioning accuracy of the middle plate 1.

[0067] Reference Figure 2 , the first proximity switch 46, the second proximity switch 47 and the third proximity switch 48 are fixed on the rising seat 38. When the rotating plate 40 rotates to point to the fifth feeding station 15, the first proximity switch 46 is triggered, and the first proximity switch 46 feeds back an electrical signal to the controller, and the controller controls the third motor 39 to stop. When the rotating plate 40 rotates to point to the first riveting station 41, the second proximity switch 47 is triggered, and the second proximity switch 47 feeds back an electrical signal to the controller, and the controller controls the third motor 39 to stop. When the rotating plate 40 rotates to point to the second riveting station 45, the third proximity switch 48 is triggered, and the third proximity switch 48 feeds back an electrical signal to the controller, and the controller controls the third motor 39 to stop.

[0068] The assembly method of the intermediate plate assembly production line proposed in the embodiment of the present application is:

[0069] In the first step, when the rotating disc 7 stops rotating, a manipulator or an automatic device installs a first pin 3 on a fixture 8, and then the rotating disc 7 starts rotating;

[0070] In the second step, the rotating disc 7 stops rotating when it rotates to a specified angle, and a robot or automatic device installs the second pin 4 on the fixture 8 equipped with the first pin 3, and then the rotating disc 7 starts rotating;

[0071] Step 3: When the jig 8 equipped with the first pin 3 and the second pin 4 reaches the first riveting station 41, the rotating disc 7 stops rotating;

[0072] In the fourth step, the transfer mechanism 10 grabs the middle plate 1 from the fifth feeding station 15 and places it on the jig 8 at the first riveting station 41;

[0073] In the fifth step, the riveting machine head 9 rivets the top of the first pin 3 and the second pin 4 to the middle plate 1;

[0074] In the sixth step, the transfer mechanism 10 removes the intermediate plate 1 from the jig 8 at the first riveting station 41, and then the rotating disc 7 starts to rotate;

[0075] Step 7: When the rotating disc 7 rotates to a specified angle, it stops rotating, a manipulator or an automatic device installs the third pin 5 on the fixture 8, and then the rotating disc 7 starts rotating;

[0076] Step 8: When the rotating disc 7 rotates to a specified angle, it stops rotating, and a manipulator or automatic device installs the fourth pin 6 on the fixture 8 equipped with the third pin 5, and then the rotating disc 7 starts rotating;

[0077] In the ninth step, when the jig 8 equipped with the third pin 5 and the fourth pin 6 reaches the second riveting station 45, the rotating disc 7 stops rotating;

[0078] In the tenth step, the transfer mechanism 10 turns the middle plate 1 180 degrees and places it on the jig 8 at the second riveting station 45;

[0079] In the eleventh step, the riveting machine head 9 rivets the tops of the third pin 5 and the fourth pin 6 to the middle plate 1 .

[0080] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intermediate plate assembly production line with an electric operating mechanism, comprising a rotating disc (7), on which a plurality of jigs (8) of the same shape are fixed at equal distances around the center of the rotating disc (7), a riveting head (9) is arranged above the rotating disc (7), and the riveting head (9) has the function of moving to the top of any jig (8) and descending, and is characterized in that: It also includes a transfer mechanism (10), which has the function of rotating the middle plate (1) by 180 degrees and placing the middle plate (1) on any fixture (8); It also includes a first feeding station (11), a second feeding station (12), a third feeding station (13), a fourth feeding station (14), and a fifth feeding station (15) arranged around the rotating disc (7), and all the jigs (8) pass through the first feeding station (11), the second feeding station (12), the third feeding station (13), and the fourth feeding station (14) in turn; The fixture (8) is provided with a first positioning pin hole (16), a second positioning pin hole (17), a third positioning pin hole (18), and a fourth positioning pin hole (19); the first feeding station (11) is used to insert the first pin shaft (3) into the first positioning pin hole (16); the second feeding station (12) is used to insert the second pin shaft (4) into the second positioning pin hole (17); the third feeding station (13) is used to insert the third pin shaft (5) into the third positioning pin hole (18); the fourth feeding station (14) is used to insert the fourth pin shaft (6) into the fourth positioning pin hole (19); and the fifth feeding station (15) is used to allow the transfer mechanism (10) to grab the intermediate plate (1); the transfer mechanism (10) comprises a rotating plate (40), a second telescopic cylinder (42), a rotating cylinder (43), and a clamping cylinder (44); There is a jig (8) between the jig (8) facing the second feeding station (12) and the jig (8) facing the third feeding station (13); the position of the jig (8) between the second feeding station (12) and the third feeding station (13) is the first riveting station (41); the next position of the jig (8) facing the fourth feeding station (14) after rotation is the second riveting station (45), and the machine also includes a rotary riveting machine guide frame (20), on which a first drive mechanism (21), a second drive mechanism (22), and a third drive mechanism (23) are provided, the first drive mechanism (21) is used to drive the second drive mechanism (22) to move horizontally, the second drive mechanism (22) is used to drive the third drive mechanism (23) to move horizontally, and the driving direction of the first drive mechanism (21) is opposite to the driving direction of the second drive mechanism (22). The third driving mechanism (23) is used to drive the rotary riveting machine head (9) to move vertically. The first driving mechanism (21) comprises a first guide rail (24), a first slider (25), and a drag chain (26). The end of the drag chain (26) and the first slider (25) are fixedly connected to the second driving mechanism (22). The first slider (25) is slidably connected to the first guide rail (24). The second driving mechanism (22) comprises a first motor (27), a first lead screw (28), a first nut seat (29), a second guide rail (30), and a second slider (31). The second slider (31) and the first nut seat (29) are fixedly connected to the third driving mechanism (23). The first nut seat (29) is screwed to the first lead screw (28). The first motor (27) drives the first lead screw (28). The first lead screw (28) is perpendicular to the first guide rail (24). The third driving mechanism (23) comprises a second motor (32), a second lead screw (33), a second nut seat (34), a third guide rail (35), and a third slide block (36); the third slide block (36) and the second nut seat (34) are both fixedly connected to the riveting machine head (9); the second nut seat (34) is threadedly connected to the second lead screw (33); the second motor (32) is driven to connect to the second lead screw (33); a first telescopic cylinder (37) is fixedly provided above the rotating disc (7); a lifting seat (38) is fixed on the piston rod of the first telescopic cylinder (37); A third motor (39) is fixed on the lifting seat (38), the rotating shaft of the third motor (39) is fixedly connected to the rotating plate (40), the rotating shaft of the third motor (39) is coaxial with the rotating disc (7), and the rotating shaft of the third motor (39) and the piston rod of the first telescopic cylinder (37) are both perpendicular to the upper surface of the rotating disc (7); A second telescopic cylinder (42) is fixed on the rotating plate (40), a rotating cylinder (43) is fixed on the piston rod of the second telescopic cylinder (42), the rotating cylinder (43) drives a connecting clamping cylinder (44), the clamping cylinder (44) is used to clamp the middle plate (1), two clamping claws (51) of the clamping claw cylinder (44) are combined to form two layers of interlinked slits (52) of different heights, the two layers of slits (52) are used to clamp the middle plate (1) and the protruding plate (49), respectively, and a groove (53) for inserting the ear (50) is also provided on the clamping claw (51).

2. The intermediate plate assembly production line of the electric operating mechanism according to claim 1, characterized in that: The lifting seat (38) is provided with a first proximity switch (46), a second proximity switch (47), and a third proximity switch (48). The first proximity switch (46) is used to stop the rotating plate (40) when it rotates to point to the fifth feeding station (15), the second proximity switch (47) is used to stop the rotating plate (40) when it rotates to point to the first riveting station (41), and the third proximity switch (48) is used to stop the rotating plate (40) when it rotates to point to the second riveting station (45).

3. The intermediate plate assembly line of the electric operating mechanism according to claim 1, characterized in that: The first telescopic cylinder (37) is fixed on the riveting machine guide rail frame (20).

4. An assembly method for an intermediate plate assembly line of an electric operating mechanism according to claim 1, characterized in that: Here are the steps: Step 1. When the rotating disc (7) stops rotating, the manipulator installs the first pin (3) on a fixture (8), and then the rotating disc (7) starts rotating; Step 2. The rotating disk (7) stops rotating when it rotates to a specified angle, and the manipulator installs the second pin (4) on the fixture (8) equipped with the first pin (3), and then the rotating disk (7) starts rotating; Step 3. When the jig (8) equipped with the first pin (3) and the second pin (4) reaches the first riveting station (41), the rotating disk (7) stops rotating; Step 4. The transfer mechanism (10) grabs the middle plate (1) from the fifth feeding station (15) and places it on the jig (8) at the first riveting station (41); Step 5. The riveting machine head (9) rivets the tops of the first pin (3) and the second pin (4) to the middle plate (1); Step 6. The transfer mechanism (10) removes the intermediate plate (1) from the jig (8) at the first riveting station (41), and then the rotating disc (7) starts to rotate; Step 7. When the rotating disk (7) rotates to a specified angle, it stops rotating, the robot inserts the third pin (5) into the fixture (8), and then the rotating disk (7) starts rotating; Step 8. When the rotating disk (7) rotates to a specified angle, it stops rotating, the robot installs the fourth pin (6) on the fixture (8) equipped with the third pin (5), and then the rotating disk (7) starts rotating; Step 9. When the jig (8) equipped with the third pin (5) and the fourth pin (6) reaches the second riveting station (45), the rotating disk (7) stops rotating; Step 10. The transfer mechanism (10) turns the middle plate (1) 180° and places it on the jig (8) at the second riveting station (45); Step 11. The riveting machine head (9) rivets the tops of the third pin shaft (5) and the fourth pin shaft (6) onto the middle plate (1).

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