A motor rear cover assembling machine

Abstract

The utility model relates to a motor rear cover assembly machine, it includes work table, work table is provided with feeding mechanism, turnover subassembly, horizontal conveying subassembly, transfer station, rotation location station, transplanting subassembly, positioning and taking material subassembly, motor preloading station in proper order along the length direction of work table, feeding mechanism conveys the rear cover to the turnover subassembly department, the rear cover is turned over 180 degrees by turnover subassembly and is placed in transfer station department by horizontal conveying subassembly, horizontal conveying subassembly moves the rear cover from transfer station department to rotation location station department again, rotation location station rotates the rear cover to the position that rear cover can align with motor assembly to facilitate the rear cover and motor assembly carry out the pressure equipment, transplanting subassembly moves the rear cover from rotation location station department to motor preloading station department and aligns with motor assembly, and positioning and taking material subassembly press equipment the rear cover to motor assembly on motor preloading station department. The application has the effect that improves assembly efficiency and assembly accuracy.

Description

Technical Field

[0001] This utility model relates to the field of motor rear cover assembly machines, and in particular to a motor rear cover assembly machine. Background Technology

[0002] During motor assembly, after the stator and rotor are assembled, a back cover needs to be installed on the motor assembly. In traditional assembly processes, workers manually press and install the back cover, which is time-consuming and labor-intensive, and assembly efficiency needs to be improved. Utility Model Content

[0003] To solve the above-mentioned technical problems, this application provides a motor rear cover assembly machine.

[0004] The motor rear cover assembly machine provided in this application adopts the following technical solution:

[0005] A motor rear cover assembly machine includes a workbench, on which a feeding mechanism, a flipping component, a horizontal conveying component, a transfer station, a rotary positioning station, a transfer component, a positioning and picking component, and a motor pre-assembly station are arranged sequentially along the length of the workbench.

[0006] The feeding mechanism includes a placement plate and a horizontal sliding assembly. The horizontal sliding assembly includes a horizontal sliding motor, a horizontal lead screw, a slider, a sliding plate, a guide block, and a guide rail. The horizontal sliding motor and the horizontal lead screw are coaxially connected. The other end of the horizontal lead screw is rotatably connected to the worktable through a bearing seat. The horizontal lead screw passes through the slider and is threadedly connected to the slider. One side of the sliding plate is fixedly connected to the slider. The guide block is fixedly connected to the bottom surface of the sliding plate. The guide rail is located on the top surface of the worktable. The guide block has a guide groove for the guide rail to pass through. Both the guide groove and the guide rail are dovetail-shaped. The placement plate is fixedly connected above the sliding plate, and the rear cover is placed on the placement plate.

[0007] Preferably, the flipping assembly includes a rotary cylinder, and a gripper cylinder is provided on the output end of the rotary cylinder. The cylinder body of the gripper cylinder is fixed to the output end of the rotary cylinder. The output end of the gripper cylinder has two grippers, and each of the two grippers is connected to a clamping rod. The cross-section of the clamping rod is semi-circular. The two clamping rods are joined together to form a round rod. The outer diameter of the round rod is smaller than the inner diameter of the central hole of the back cover. The flipping assembly is raised and lowered. After the round rod is inserted into the central hole of the back cover, the two clamping rods move in a direction away from each other to clamp the back cover.

[0008] Preferably, the horizontal conveying assembly includes a horizontal linear module and a horizontal sliding plate. A column is provided on the worktable, the frame of the horizontal linear module is fixed to the top of the column, and the horizontal sliding plate is fixedly connected to the sliding table of the horizontal linear module.

[0009] Preferably, a vertical plate is connected to the horizontal sliding plate, and a lifting cylinder is provided on the vertical plate. The cylinder body of the lifting cylinder is fixedly connected to the vertical plate. An auxiliary plate is fixedly connected to the side of the cylinder body of the rotary cylinder near the vertical plate. The piston rod of the lifting cylinder is fixedly connected to the auxiliary plate. A limit rail is provided on the vertical plate. A limit block is fixedly connected to the side of the auxiliary plate near the vertical plate. A limit rail is fixedly connected to the side of the vertical plate near the auxiliary plate. A limit groove is provided on the limit block for the limit rail to pass through. Both the limit groove and the limit rail are dovetail-shaped.

[0010] Preferably, a transition block is also connected to the horizontal sliding plate. A lifting cylinder II is connected to the end of the transition block away from the horizontal sliding plate. A fixed plate is connected to the piston rod of the lifting cylinder II. A vertically arranged connecting plate is fixedly connected to the side wall of the fixed plate. A horizontally arranged operating plate is fixedly connected to the side of the connecting plate away from the fixed plate. A suction cup I is provided on the operating plate. An air pump I is externally connected to the top of the suction cup I through an air pipe I. The lifting cylinder II drives the operating plate to descend until the suction cup I abuts against the top surface of the back cover. The air pump I performs air extraction to suck up the back cover.

[0011] Preferably, the transfer station includes a support frame and a transfer plate. The transfer plate is fixedly installed on the top surface of the support frame. The transfer plate has a clearance notch on the side near the horizontal slide for the gripper cylinder and the round rod to make way.

[0012] The rotary positioning station includes a second support frame and a top plate. The top plate is fixedly installed on the top surface of the second support frame. A rotating base is rotatably mounted on the top plate. A rotary motor is located below the top plate. The output shaft of the rotary motor is coaxially connected to the rotating base. A positioning rod is coaxially fixed on the top surface of the rotating base. The positioning rod passes through the central hole of the rear cover. The outer peripheral wall of the positioning rod is interference-fitted with the inner peripheral wall of the central hole of the rear cover. When the output shaft of the rotary motor rotates, it drives the rear cover to rotate. A camera is mounted on the top surface of the top plate. Multiple cameras are spaced apart along the circumference of the rear cover. The cameras are used to confirm that the rear cover has rotated to a position where it can be aligned with the motor assembly so that the rear cover and the motor assembly can be pressed together. At this time, the rotary motor stops rotating.

[0013] Preferably, the distance the flipping component moves from the position where it grips the back cover at the feeding mechanism to the transfer station is s1, the distance between the first support frame and the second support frame is s2, and the distance between the vertical plate and the transition block is s3, where s1=s2=s3. When the flipping component moves from the position where it grips the back cover at the feeding mechanism to the transfer station, the operating plate moves from the transfer station to the rotary positioning station.

[0014] Preferably, the transplanting assembly includes a mounting frame, with an upper plate on the top surface of the mounting frame. A second horizontal sliding assembly is provided on the upper plate. The second horizontal sliding assembly includes a second horizontal sliding motor, a second horizontal lead screw, a second slider, a second sliding plate, a second guide block, and a second guide rail. The second horizontal sliding motor is coaxially connected to the second horizontal lead screw. The other end of the second horizontal lead screw is rotatably connected to the upper plate through a bearing seat. The second horizontal lead screw passes through the second slider and is threadedly connected to the second slider. One side of the second sliding plate is fixedly connected to the second slider. The second guide block is fixedly connected to the bottom surface of the second sliding plate. The second guide rail is provided on the top surface of the upper plate. The second guide block has a second guide groove for the second guide rail to pass through. Both the second guide groove and the second guide rail are dovetail-shaped. The second horizontal sliding assembly drives the second sliding plate to move from the second bracket to the mounting frame.

[0015] A suction assembly is mounted on the bottom surface of the sliding plate 2. The suction assembly includes a mounting plate and a suction cup 2. Multiple suction cups 2 are spaced apart along the circumference of the rear cover. The top of the suction cup 2 is connected to an external air pump 2 through an air pipe 2.

[0016] Preferably, the positioning and material handling assembly includes a lifting motor, a vertical lead screw, and guide rods. A sliding sleeve is provided at the center of the sliding plate two for use with the vertical lead screw. The vertical lead screw passes through the sliding sleeve and is threadedly connected to it. The guide rods are located at the four corners of the sliding plate two, passing through the sliding plate two and slidably connected to it. The sliding sleeves are fixedly connected to the sliding plate two. A support plate is connected to the top of each guide rod. The support plate is simultaneously fixedly connected to the four guide rods. The lifting motor is mounted above the support plate via a bracket. The output end of the lifting motor is coaxially connected to the top of the vertical lead screw. The top of the vertical lead screw extends out of the support plate and is rotatably connected to the support plate via a bearing.

[0017] The mounting plate is located below the sliding plate. A transition plate is provided between the mounting plate and the sliding plate. The transition plate is also fixedly connected to the bottom end of four guide rods. A fixing rod is fixedly installed on the bottom surface of the transition plate. The fixing rod is located at the four corners of the transition plate. The mounting plate is also fixedly connected to the bottom end of the four fixing rods.

[0018] The motor pre-assembly station includes a second placement plate, on which the motor assembly is placed;

[0019] After the lifting motor drives the vertical screw to rotate, the positioning and material picking assembly is lifted as a whole, the mounting plate descends until the suction cup two abuts against the top surface of the back cover, and the air pump two pumps air to suck up the back cover.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] By automating the assembly of the back cover onto the motor assembly using mechanical structures, not only is time and labor saved and assembly efficiency improved, but assembly precision is also increased, thereby improving the assembly quality of the motor back cover. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a motor rear cover assembly machine according to an embodiment of this application.

[0023] Figure 2 This is a schematic diagram illustrating the structure of the feeding mechanism in the embodiments of this application.

[0024] Figure 3 This is a structural schematic diagram used to illustrate the flipping component in an embodiment of this application.

[0025] Figure 4 This is a structural schematic diagram used in the embodiments of this application to illustrate the transfer station and the rotary positioning station.

[0026] Figure 5 This is a schematic diagram illustrating the structure of the transplanting component in an embodiment of this application.

[0027] Figure 6 This is a structural schematic diagram of the positioning and material handling component used in the embodiments of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Workbench; 11. Column; 2. Feeding mechanism; 21. Placement plate one; 22. Horizontal sliding assembly one; 221. Horizontal lead screw one; 222. Slider one; 223. Sliding plate one; 224. Guide block one; 225. Guide rail one; 3. Tilting assembly; 31. Rotary cylinder; 311. Auxiliary plate; 312. Limiting block; 32. Gripper cylinder; 33. Clamping rod; 34. Round rod; 4. Horizontal conveying assembly; 41. Horizontal linear module; 42. Horizontal sliding plate; 43. Vertical plate; 431. Lifting cylinder one; 432. Limiting rail; 44. Transition block; 441. Lifting cylinder two; 442. Fixing plate; 443. Connecting plate; 444. Operating plate; 445. Suction cup one; 5. Transfer station; 51. Support frame one; 52. Transfer plate; 5 21. Clearance gap; 6. Rotary positioning station; 61. Support frame two; 62. Top plate; 63. Rotating base; 631. Positioning rod; 64. Rotating motor; 65. Camera; 7. Transplanting assembly; 71. Mounting frame; 72. Upper plate; 73. Horizontal sliding assembly two; 731. Horizontal lead screw two; 732. Slider two; 733. Sliding plate two; 734. Guide block two; 735. Guide rail two; 8. Positioning and material picking assembly; 81. Suction assembly; 811. Mounting plate; 812. Suction cup two; 82. Lifting motor; 83. Vertical lead screw; 84. Guide rod; 85. Sliding sleeve; 86. Support plate; 87. Bracket; 88. Transition plate; 89. Fixing rod; 9. Motor pre-assembly station; 91. Placement plate two; 10. Back cover; 101. Center hole; 12. Motor assembly. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] This application discloses a motor rear cover assembly machine.

[0031] Reference Figure 1-6 The motor rear cover assembly machine includes a workbench 1. Along the length of the workbench 1, there are a feeding mechanism 2, a flipping component 3, a horizontal conveying component 4, a transfer station 5, a rotary positioning station 6, a transfer component 7, a positioning and picking component 8, and a motor pre-assembly station 9.

[0032] The feeding mechanism 2 includes a placement plate 21 and a horizontal sliding assembly 22. The horizontal sliding assembly 22 includes a horizontal sliding motor 21, a horizontal lead screw 221, a slider 222, a sliding plate 223, a guide block 224, and a guide rail 225. The horizontal sliding motor 21 is coaxially connected to the horizontal lead screw 221. The other end of the horizontal lead screw 221 is rotatably connected to the worktable 1 through a bearing seat. The horizontal lead screw 221 passes through the slider 222 and is connected to the slider 223. 222 threaded connection, one side of sliding plate 223 is fixedly connected to slider 222, guide block 224 is fixedly connected to the bottom surface of sliding plate 223, guide rail 225 is set on the top surface of workbench 1, guide block 224 is provided with guide groove 1 for guide rail 225 to pass through, guide groove 1 and guide rail 225 are both dovetail shaped, placement plate 21 is fixedly connected above sliding plate 223, and rear cover 10 is placed on placement plate 21.

[0033] A horizontal sliding motor drives a horizontal lead screw 221 to rotate, which in turn drives a slider 222 to slide. The slider 222 drives a sliding plate 223 to slide, and the sliding plate 223 drives a placement plate 21 to slide, so that the rear cover 10 placed on the placement plate 21 moves to the flipping assembly 3.

[0034] The flipping assembly 3 includes a rotary cylinder 31, and a gripper cylinder 32 is provided on the output end of the rotary cylinder 31. The cylinder body of the gripper cylinder 32 is fixed to the output end of the rotary cylinder 31. The output end of the gripper cylinder 32 has two grippers, and the two grippers are respectively connected to a retaining rod 33. The cross-section of the retaining rod 33 is semi-circular. The two retaining rods 33 are joined together to form a round rod 34. The outer diameter of the round rod 34 is smaller than the inner diameter of the central hole 101 of the rear cover 10. The flipping assembly 3 is raised and lowered. After the round rod 34 is inserted into the central hole 101 of the rear cover 10, the two retaining rods 33 move in a direction away from each other to clamp the rear cover 10.

[0035] The horizontal conveying assembly 4 includes a horizontal linear module 41 and a horizontal slide plate 42. A column 11 is provided on the worktable 1. The frame of the horizontal linear module 41 is fixed to the top of the column 11, and the horizontal slide plate 42 is fixedly connected to the slide of the horizontal linear module 41.

[0036] A vertical plate 43 is connected to a horizontal sliding plate 42. A lifting cylinder 431 is installed on the vertical plate 43. The cylinder body of the lifting cylinder 431 is fixedly connected to the vertical plate 43. An auxiliary plate 311 is fixedly connected to the side of the cylinder body of the rotary cylinder 31 near the vertical plate 43. The piston rod of the lifting cylinder 431 is fixedly connected to the auxiliary plate 311. A limit rail 432 is installed on the vertical plate 43. A limit block 312 is fixedly connected to the side of the auxiliary plate 311 near the vertical plate 43. The limit rail 432 is fixedly connected to the side of the vertical plate 43 near the auxiliary plate 311. A limit groove is opened on the limit block 312 for the limit rail 432 to pass through. Both the limit groove and the limit rail 432 are dovetail shaped.

[0037] A transition block 44 is also connected to the horizontal sliding plate 42. A lifting cylinder 441 is connected to the end of the transition block 44 away from the horizontal sliding plate 42. The piston rod of the lifting cylinder 441 is connected to a fixed plate 442. A vertically arranged connecting plate 443 is fixedly connected to the side wall of the fixed plate 442. A horizontally arranged operating plate 444 is fixedly connected to the side of the connecting plate 443 away from the fixed plate 442. A suction cup 445 is provided on the operating plate 444. The top of the suction cup 445 is connected to an external air pump through an air pipe. The lifting cylinder 441 drives the operating plate 444 to descend until the suction cup 445 abuts against the top surface of the rear cover 10. The air pump performs air extraction to suck up the rear cover 10.

[0038] The transfer station 5 includes a support frame 51 and a transfer plate 52. The transfer plate 52 is fixedly installed on the top surface of the support frame 51. The transfer plate 52 has a clearance notch 521 on the side near the horizontal slide plate 42 for the gripper cylinder 32 and the round rod 34 to make way.

[0039] The rotary positioning station 6 includes a support frame 61 and a top plate 62. The top plate 62 is fixedly installed on the top surface of the support frame 61. A rotating base 63 is rotatably mounted on the top plate 62. A rotary motor 64 is located below the top plate 62. The output shaft of the rotary motor 64 is coaxially connected to the rotating base 63. A positioning rod 631 is coaxially fixed on the top surface of the rotating base 63. The positioning rod 631 passes through the center hole 101 of the rear cover 10. The outer peripheral wall of the positioning rod 631 is interference-fitted with the inner peripheral wall of the center hole 101 of the rear cover 10. When the output shaft of the rotary motor 64 rotates, it drives the rear cover 10 to rotate. A camera 65 is located on the top surface of the top plate 62. Multiple cameras 65 are spaced apart along the circumference of the rear cover 10. The cameras 65 are used to confirm that the rear cover 10 has rotated to a position where it can be aligned with the motor assembly 12 so that the rear cover 10 and the motor assembly 12 can be pressed together. At this time, the rotary motor 64 stops rotating.

[0040] The distance s1 between the flipping component 3, which moves from the position where the back cover 10 is gripped by the feeding mechanism 2, to the transfer station 5, is the distance s2 between the first support frame 51 and the second support frame 61, and the distance s3 between the vertical plate 43 and the transition block 44. When the flipping component 3 moves from the position where the back cover 10 is gripped by the feeding mechanism 2 to the transfer station 5, the operating plate 444 moves from the transfer station 5 to the rotary positioning station 6.

[0041] Lifting cylinder 431 drives rotating cylinder 31 to descend, causing round rod 34 to insert into the center hole 101 of rear cover 10. Then, gripper cylinder 32 drives two clamping rods 33 to move away from each other, thus clamping the rear cover 10. Next, rotating cylinder 31 rotates the rear cover 10 180°. Then, lifting cylinder 431 drives rotating cylinder 31 to rise. Then, horizontal linear module 41 drives vertical plate 43 to move to transfer station 5. Then, lifting cylinder 431 drives rotating cylinder 31 to descend, and gripper cylinder 32 drives two clamping rods 33 to move closer together. After releasing the back cover 10, place the back cover 10 on the transfer plate 52. Then, the horizontal linear module 41 drives the vertical plate 43 to move towards the direction close to the feeding mechanism 2 until it returns to the initial position. When the gripper cylinder 32 of the flipping component 3 drives the clamping rod 33 to clamp the next back cover 10, the lifting cylinder 441 is located at the transfer station 5 and drives the suction cup 445 to pick up the back cover 10 that was placed at the transfer station 5 during the previous operation. Then, when the flipping component 3 moves from the initial position to the transfer station 5, the suction cup 445 moves from the transfer station 5 to the rotary positioning station 6.

[0042] Lifting cylinder 441 drives suction cup 445 to descend and inserts positioning rod 631 into the center hole 101 of rear cover 10. Then, the air pump releases air to loosen rear cover 10. Then, rotating motor 64 drives rotating base 63 to rotate. Camera 65 is electrically connected to the control system of rotating motor 64. When camera 65 detects that the cover has rotated to a position where rear cover 10 can be aligned with motor assembly 12 so that rear cover 10 and motor assembly 12 can be pressed together, rotating motor 64 stops rotating.

[0043] Transplanting assembly 7 includes a mounting frame 71, with an upper plate 72 on the top surface of the mounting frame 71. A second horizontal sliding assembly 73 is mounted on the upper plate 72. The second horizontal sliding assembly 73 includes a second horizontal sliding motor, a second horizontal lead screw 731, a second slider 732, a second sliding plate 733, a second guide block 734, and a second guide rail 735. The second horizontal sliding motor is coaxially connected to the second horizontal lead screw 731. The other end of the second horizontal lead screw 731 is rotatably connected to the upper plate 72 via a bearing seat. The sliding plate 733 passes through and is threadedly connected to the second slider 732. One side of the sliding plate 733 is fixedly connected to the second slider 732. The guide block 734 is fixedly connected to the bottom surface of the sliding plate 733. The guide rail 735 is set on the top surface of the upper plate 72. The guide block 734 has a guide groove 2 for the guide rail 735 to pass through. Both the guide groove 2 and the guide rail 735 are dovetail shaped. The horizontal sliding component 73 drives the sliding plate 733 to move from the bracket 87 to the mounting bracket 71.

[0044] A suction assembly 81 is installed on the bottom surface of the sliding plate 733. The suction assembly 81 includes a mounting plate 811 and a suction cup 812. Multiple suction cups 812 are spaced apart along the circumference of the rear cover 10. The top of the suction cup 812 is connected to an external air pump 2 through an air pipe 2.

[0045] The positioning and material handling assembly 8 includes a lifting motor 82, a vertical lead screw 83, and guide rods 84. A sliding sleeve 85, which works in conjunction with the vertical lead screw 83, is located at the center of the sliding plate 733. The vertical lead screw 83 passes through the sliding sleeve 85 and is threadedly connected to it. The guide rods 84 are located at the four corners of the sliding plate 733, passing through and slidably connected to it. The sliding sleeves 85 are fixedly connected to the sliding plate 733. A support plate 86 is connected to the top of each guide rod 84, and the support plate 86 is simultaneously fixedly connected to all four guide rods 84. The lifting motor 82 is mounted above the support plate 86 via a bracket 87. The output end of the lifting motor 82 is coaxially connected to the top of the vertical lead screw 83. The top of the vertical lead screw 83 extends out of the support plate 86 and is rotatably connected to it via a bearing.

[0046] The mounting plate 811 is located below the sliding plate 733. A transition plate 88 is provided between the mounting plate 811 and the sliding plate 733. The transition plate 88 is also fixedly connected to the bottom ends of four guide rods 84. Fixing rods 89 are fixedly installed on the bottom surface of the transition plate 88, and the fixing rods 89 are located at the four corners of the transition plate 88. The mounting plate 811 is also fixedly connected to the bottom ends of the four fixing rods 89. The space between the transition plate 88 and the mounting plate 811 facilitates the routing of the air duct.

[0047] The motor pre-assembly station 9 includes a second placement plate 91, on which the motor assembly 12 is placed.

[0048] After the lifting motor 82 drives the vertical screw 83 to rotate, the positioning and material picking assembly 8 is lifted as a whole. The mounting plate 811 descends until the suction cup 812 abuts against the top surface of the rear cover 10. The vacuum pump 812 draws air to suck up the rear cover 10. Then, the horizontal sliding motor 82 drives the horizontal screw 731 to rotate. The slider 732 slides and drives the sliding plate 733 to slide above the motor assembly 12. Finally, the lifting motor 82 drives the mounting plate 811 to descend and press the rear cover 10 onto the motor assembly 12 to complete the assembly of the motor assembly 12 and the rear cover 10.

[0049] The implementation principle of the motor rear cover assembly machine in this application embodiment is as follows:

[0050] The feeding mechanism 2 conveys the back cover 10 to the flipping component 3. The flipping component 3 flips the back cover 10 180 degrees and then the horizontal conveying component 4 places it at the transfer station 5. The horizontal conveying component 4 then moves the back cover 10 from the transfer station 5 to the rotary positioning station 6. The rotary positioning station 6 rotates the back cover 10 to a position where the back cover 10 can be aligned with the motor assembly 12 so that the back cover 10 and the motor assembly 12 can be pressed together. The transfer component 7 moves the back cover 10 from the rotary positioning station 6 to the motor pre-assembly station 9 and aligns it with the motor assembly 12. The positioning and picking component 8 presses the back cover 10 onto the motor assembly 12 at the motor pre-assembly station 9.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A motor rear cover assembly machine, characterized in that: The workbench includes a feeding mechanism, a flipping assembly, a horizontal conveying assembly, a transfer station, a rotary positioning station, a transfer assembly, a positioning and material picking assembly, and a motor pre-assembly station, which are arranged sequentially along the length of the workbench. The feeding mechanism includes a placement plate and a horizontal sliding assembly. The horizontal sliding assembly includes a horizontal sliding motor, a horizontal lead screw, a slider, a sliding plate, a guide block, and a guide rail. The horizontal sliding motor and the horizontal lead screw are coaxially connected. The other end of the horizontal lead screw is rotatably connected to the worktable through a bearing seat. The horizontal lead screw passes through the slider and is threadedly connected to the slider. One side of the sliding plate is fixedly connected to the slider. The guide block is fixedly connected to the bottom surface of the sliding plate. The guide rail is located on the top surface of the worktable. The guide block has a guide groove for the guide rail to pass through. Both the guide groove and the guide rail are dovetail-shaped. The placement plate is fixedly connected above the sliding plate, and the rear cover is placed on the placement plate.

2. The motor rear cover assembly machine according to claim 1, characterized in that: The flipping assembly includes a rotary cylinder, and a gripper cylinder is provided on the output end of the rotary cylinder. The cylinder body of the gripper cylinder is fixed to the output end of the rotary cylinder. The output end of the gripper cylinder has two grippers, and each gripper is connected to a clamping rod. The cross-section of the clamping rod is semi-circular. The two clamping rods are joined together to form a round rod. The outer diameter of the round rod is smaller than the inner diameter of the center hole of the back cover. The flipping assembly is raised and lowered. After the round rod is inserted into the center hole of the back cover, the two clamping rods move in a direction away from each other to clamp the back cover.

3. The motor rear cover assembly machine according to claim 2, characterized in that: The horizontal conveying assembly includes a horizontal linear module and a horizontal sliding plate. A column is provided on the worktable, the frame of the horizontal linear module is fixed to the top of the column, and the horizontal sliding plate is fixedly connected to the sliding table of the horizontal linear module.

4. The motor rear cover assembly machine according to claim 3, characterized in that: A vertical plate is connected to the horizontal sliding plate. A lifting cylinder is installed on the vertical plate. The cylinder body of the lifting cylinder is fixedly connected to the vertical plate. An auxiliary plate is fixedly connected to the side of the cylinder body of the rotary cylinder near the vertical plate. The piston rod of the lifting cylinder is fixedly connected to the auxiliary plate. A limit rail is provided on the vertical plate. A limit block is fixedly connected to the side of the auxiliary plate near the vertical plate. A limit rail is fixedly connected to the side of the vertical plate near the auxiliary plate. A limit groove is opened on the limit block for the limit rail to pass through. Both the limit groove and the limit rail are dovetail shaped.

5. The motor rear cover assembly machine according to claim 4, characterized in that: A transition block is also connected to the horizontal sliding plate. A lifting cylinder is connected to the end of the transition block away from the horizontal sliding plate. The piston rod of the lifting cylinder is connected to a fixed plate. A vertically arranged connecting plate is fixedly connected to the side wall of the fixed plate. A horizontally arranged operating plate is fixedly connected to the side of the connecting plate away from the fixed plate. A suction cup is provided on the operating plate. The top of the suction cup is connected to an external air pump through an air pipe. The lifting cylinder drives the operating plate to descend until the suction cup abuts against the top surface of the back cover. The air pump performs air extraction to suck up the back cover.

6. The motor rear cover assembly machine according to claim 5, characterized in that: The transfer station includes a support frame and a transfer plate. The transfer plate is fixedly installed on the top surface of the support frame. The transfer plate has a clearance notch on the side near the horizontal slide for the gripper cylinder and the round rod to make way. The rotary positioning station includes a second support frame and a top plate. The top plate is fixedly installed on the top surface of the second support frame. A rotating base is rotatably mounted on the top plate. A rotary motor is located below the top plate. The output shaft of the rotary motor is coaxially connected to the rotating base. A positioning rod is coaxially fixed on the top surface of the rotating base. The positioning rod passes through the central hole of the rear cover. The outer peripheral wall of the positioning rod is interference-fitted with the inner peripheral wall of the central hole of the rear cover. When the output shaft of the rotary motor rotates, it drives the rear cover to rotate. A camera is mounted on the top surface of the top plate. Multiple cameras are spaced apart along the circumference of the rear cover. The cameras are used to confirm that the rear cover has rotated to a position where it can be aligned with the motor assembly so that the rear cover and the motor assembly can be pressed together. At this time, the rotary motor stops rotating.

7. The motor rear cover assembly machine according to claim 6, characterized in that: The distance s1 between the flipping component and the transfer station is the distance between the position where the back cover is gripped by the feeding mechanism. The distance between the first support frame and the second support frame is s2. The distance between the vertical plate and the transition block is s3. s1=s2=s3. When the flipping component moves from the position where the back cover is gripped by the feeding mechanism to the transfer station, the operating plate moves from the transfer station to the rotary positioning station.

8. The motor rear cover assembly machine according to claim 6, characterized in that: The transplanting assembly includes a mounting frame, with an upper plate on the top surface of the mounting frame. A second horizontal sliding assembly is mounted on the upper plate. The second horizontal sliding assembly includes a second horizontal sliding motor, a second horizontal lead screw, a second slider, a second sliding plate, a second guide block, and a second guide rail. The second horizontal sliding motor is coaxially connected to the second horizontal lead screw. The other end of the second horizontal lead screw is rotatably connected to the upper plate via a bearing seat. The second horizontal lead screw passes through the second slider and is threadedly connected to the second slider. One side of the second sliding plate is fixedly connected to the second slider. The second guide block is fixedly connected to the bottom surface of the second sliding plate. The second guide rail is located on the top surface of the upper plate. The second guide block has a guide groove for the second guide rail to pass through. Both the second guide groove and the second guide rail are dovetail-shaped. The second horizontal sliding assembly drives the second sliding plate to move from the second bracket to the mounting frame. A suction assembly is mounted on the bottom surface of the sliding plate 2. The suction assembly includes a mounting plate and a suction cup 2. Multiple suction cups 2 are spaced apart along the circumference of the rear cover. The top of the suction cup 2 is connected to an external air pump 2 through an air pipe 2.

9. The motor rear cover assembly machine according to claim 8, characterized in that: The positioning and material handling assembly includes a lifting motor, a vertical lead screw, and guide rods. A sliding sleeve is located at the center of the sliding plate two, cooperating with the vertical lead screw. The vertical lead screw passes through the sliding sleeve and is threadedly connected to it. The guide rods are located at the four corners of the sliding plate two, passing through it and slidably connected to it. The sliding sleeves are fixedly connected to the sliding plate two. A support plate is connected to the top of each guide rod, and the support plate is simultaneously fixedly connected to the four guide rods. The lifting motor is mounted above the support plate via a bracket. The output end of the lifting motor is coaxially connected to the top of the vertical lead screw. The top of the vertical lead screw extends out of the support plate and is rotatably connected to it via a bearing. The mounting plate is located below the sliding plate. A transition plate is provided between the mounting plate and the sliding plate. The transition plate is also fixedly connected to the bottom end of four guide rods. A fixing rod is fixedly installed on the bottom surface of the transition plate. The fixing rod is located at the four corners of the transition plate. The mounting plate is also fixedly connected to the bottom end of the four fixing rods. The motor pre-assembly station includes a second placement plate, on which the motor assembly is placed; After the lifting motor drives the vertical screw to rotate, the positioning and material picking assembly is lifted as a whole, the mounting plate descends until the suction cup two abuts against the top surface of the back cover, and the air pump two pumps air to suck up the back cover.

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