A rare earth permanent magnet motor rotor magnetic sheet punching assembly machine

Abstract

The present invention belongs to the technical field of motor assembly, and specifically relates to a rare earth permanent magnet motor rotor magnetic sheet punching assembly machine, including a workbench, a rotating drum is rotatably connected to the workbench, a plurality of connecting plates are connected to the top of the workbench, a placing rotating plate driven by a driving mechanism is rotatably connected to the connecting plates, the placing rotating plate is fixedly connected to the rotating drum, a plurality of circles of arc holes for magnetic sheets of different sizes to pass through are opened on the placing rotating plate, and an ejection mechanism for ejecting magnetic sheets is provided inside the workbench. The limiting side plates, side baffles and upper baffles limit the magnetic sheets on the placing strip, the pressing cylinder presses the rotor, the lifting cylinder or the sliding rod lifts the magnetic sheets, the pushing plate pushes the remaining magnetic sheets, and the placing rotating plate and the rotor are rotated to continue the assembly, the assembly is automated, the work efficiency is high, and the placing rotating plate has arc holes of different sizes, and the positions of the limiting side plates, side baffles, upper baffles and sliding rods can be flexibly adjusted to adapt to magnetic sheets of different sizes, and the adaptability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of motor assembly, and in particular relates to a rare earth permanent magnet motor rotor magnetic sheet punching assembly machine. Background Art

[0002] Due to the high magnetic energy product and high coercive force of rare earth permanent magnets, rare earth permanent magnet motors have the advantages of small size, light weight, high efficiency and good characteristics. Rare earth permanent magnet motors use alternating current to pass through the stator winding to generate a rotating magnetic field. The rare earth permanent magnet material on the rotor is affected by the stator magnetic field to generate magnetic force, thereby driving the motor to rotate.

[0003] In the production process of rare earth permanent magnet motors, the rotor and magnetic sheets are assembled by an assembly machine. Specifically, the rotor is placed on a placement platform, and then the magnetic sheets in the placement slots are lifted up so that the magnetic sheets are attached to the rotor. However, the width and height of the placement slots are fixed, which makes it difficult to assemble rotors and magnetic sheets of different sizes. This has limitations in use and low adaptability. Summary of the invention

[0004] In order to solve the problem that the existing assembly machine is difficult to assemble rotors and magnetic sheets of different sizes, the present invention provides a rare earth permanent magnet motor rotor magnetic sheet punching assembly machine with high adaptability.

[0005] The technical solution of the present invention is: a rare earth permanent magnet motor rotor magnetic piece punching and assembly machine, comprising a workbench, a rotating drum is rotatably connected to the workbench, a plurality of connecting plates are connected to the top of the workbench, a placing rotating plate driven by a driving mechanism is rotatably connected to the connecting plates, the placing rotating plate is fixedly connected to the rotating drum, a plurality of circles of arc holes are opened on the placing rotating plate for magnetic pieces of different sizes to pass through, an ejection mechanism for ejecting the magnetic pieces is arranged inside the workbench, two moving blocks with opposite moving directions are slidably connected to the top of the workbench, the moving blocks are each provided with a limiting side plate sliding on the X-axis, a side stopper is connected to one end of the limiting side plate close to the rotating drum, a push plate driven by an electric push rod is arranged between the two limiting side plates, two upper stoppers are arranged above the limiting side plates, and an adjusting mechanism for adjusting the position of the limiting side plates and the upper stopper is arranged on the workbench; a pressing mechanism for pressing the rotor is arranged on the workbench, and when the magnetic piece is lifted up, the position of the rotor is fixed by the pressing mechanism.

[0006] In one embodiment, two convex rods are rotatably provided at the bottom of the limiting side plates, two pairs of inclined grooves are opened on the top of the workbench, the four convex rods are respectively located in the four inclined grooves, and the side guard rods have a bent portion at one end close to the rotating drum.

[0007] In one embodiment, the driving mechanism includes a full-tooth ring, a rotating plate is connected to the full-tooth ring, a full gear driven by a reduction motor is provided on the top of the workbench, and the full-tooth ring and the full gear are meshed.

[0008] In one of the embodiments, the adjustment mechanism includes a guide rail, two guide rails are connected to the top of the workbench, linear motors are installed on the guide rails, the moving block is installed on the linear motor, electric slide rail 1 is installed on the limiting side panel, electric slide rail 2 is installed on the slider of electric slide rail 1, and two upper stop rods are respectively installed on the sliders of the two electric slide rails 2.

[0009] In one of the embodiments, the ejection mechanism includes a lifting cylinder, an electric push rod 2 is connected to the inside of the workbench, the telescopic rod of the electric push rod 2 is connected to the lifting cylinder, the lifting cylinder is sleeved on the outside of the rotating cylinder, the lifting cylinder is connected to a guide rod, the guide rod is slidably connected to a slide rod, an electric push rod 3 is connected to the inside of the workbench, the telescopic rod of the electric push rod 3 is connected to a sliding block, the sliding block is slidably connected to the slide rod, and a through groove is opened on the top of the workbench; when the lifting cylinder rises, the top end of the slide rod passes through the through groove to lift the magnetic sheet.

[0010] In one of the embodiments, the pressing mechanism includes a fixed frame, the top of the workbench is connected to the fixed frame, the fixed frame is slidably connected to a lifting frame driven by a linear drive, the lifting frame is rotatably connected to a hollow pressing cylinder for pressing the rotor through a bearing, and a through hole is opened at the bottom of the pressing cylinder for the rotor shaft to pass through.

[0011] In one of the embodiments, the rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine further includes placement bars, and two placement bars are fixedly connected to the top of the workbench.

[0012] In one of the embodiments, the pressing mechanism also includes a limit block, and at least four limit blocks sliding in the radial direction of the pressing cylinder are arranged inside the pressing cylinder. The pressing cylinder is rotatably connected with a screw rod whose number is the same as the limit blocks. One end of the screw rod is threadedly connected to the limit block, and the other end of the screw rod is located outside the pressing cylinder. The outside of the pressing cylinder is rotatably connected with a bevel gear ring, and one end of the screw rod located outside the pressing cylinder is connected to a bevel gear, which is meshed with the bevel gear ring, and a rotating rod is connected to the top of the bevel gear ring.

[0013] In one of the embodiments, the rare earth permanent magnet motor rotor magnet sheet punching and assembly machine also includes a robotic arm, which is installed on the left side of the workbench, and a clamp for clamping the rotor is installed on the end effector of the robotic arm. A positioning frame is connected to the workbench, and a V-shaped positioning groove is opened on the positioning frame.

[0014] Beneficial effects: 1. The limiting side plates, side stop bars and upper stop bars limit the magnetic sheets on the placement bar, the pressing cylinder holds down the rotor, the lifting cylinder or the sliding rod lifts the magnetic sheets, the pushing plate pushes the remaining magnetic sheets, and the assembly continues after the placement turntable and the rotor rotate. The assembly is automated and the work efficiency is high. The placement turntable has arc holes of different sizes, and the positions of the limiting side plates, side stop bars, upper stop bars and sliding rods can be flexibly adjusted to accommodate magnetic sheets of different sizes, with high adaptability.

[0015] 2. When the pressing cylinder descends, four limit blocks position the rotor to prevent the rotor from shifting. By rotating the screw, the limit blocks move in the radial direction of the pressing cylinder. The limit blocks can position rotors of different sizes.

[0016] 3. Position the rotor on the positioning frame through the V-shaped positioning groove so that the rotor is centered in the X-axis direction, and then control the robotic arm to make the clamping claw clamp the rotor on the positioning frame to the placement turntable, so as to automatically load the rotor and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the structure after the robot arm and positioning frame are hidden, with the workbench cut open.

[0019] Figure 3 It is a schematic structural diagram of the rotating drum, connecting plate, placing rotating plate, full gear ring, full gear and ejection mechanism of the present invention.

[0020] Figure 4 It is a top view of the rotating drum, connecting plate, rotating plate, full gear ring and full gear of the present invention.

[0021] Figure 5 The present invention is a schematic structural diagram of the connection relationship between the moving block, the limiting side plate, the side stopper, the push plate, the upper stopper and the placement bar.

[0022] Figure 6 It is an exploded view of the moving block, the limiting side plate, the side stopper, the push plate, the upper stopper and the placement bar of the present invention.

[0023] Figure 7 It is a top view of the moving block, the limiting side plate, the side blocking rod, the push plate and the placement strip of the present invention.

[0024] Figure 8 It is a schematic diagram of the state of the moving block, the limiting side plate and the side blocking rod after moving according to the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the ejection mechanism of the present invention.

[0026] Fig.10 It is a schematic diagram of the structure inside the pressing cylinder of the present invention.

[0027] Fig.11 It is a schematic diagram of the connection relationship between the pressing cylinder, the limiting block, the screw rod and the bevel gear of the present invention.

[0028] The markings in the figure are: 1-workbench, 2-rotating drum, 20-rotor, 21-magnetic sheet, 3-connecting plate, 4-placing rotating plate, 40-arc hole, 41-full gear ring, 42-full gear, 5-moving block, 51-guide rail, 52-linear motor, 6-limiting side plate, 61-convex rod part, 62-bevel groove, 7-side stop rod, 71-bending part, 8-push plate, 81-electric push rod 1, 9-upper stop rod, 91-electric slide rail 1, 92-electric slide rail 2, 1 0-placing bar, 111-lifting cylinder, 112-electric push rod 2, 113-guide rod, 114-sliding rod, 115-electric push rod 3, 116-sliding block, 117-through slot, 121-fixed frame, 122-lifting frame, 123-pressing cylinder, 124-through hole, 125-limiting block, 126-screw, 127-bevel gear ring, 128-bevel gear, 129-rotating rod, 131-mechanical arm, 132-positioning frame, 133-positioning slot. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0030] Embodiment 1: A rare earth permanent magnet motor rotor magnetic sheet punching assembly machine, reference Figure 1-Figure 10 , including a workbench 1, a rotating drum 2, a connecting plate 3, a placing rotating plate 4, a driving mechanism, an ejection mechanism, a moving block 5, a limiting side plate 6, a side stopper 7, a push plate 8, an electric push rod 81, an upper stopper 9 and an adjusting mechanism. The bottom of the workbench 1 is rotatably connected with a hollow rotating drum 2, and the rotating drum 2 passes through the top surface of the workbench 1. Four connecting plates 3 are welded on the top of the workbench 1. The four connecting plates 3 are rotatably connected with a placing rotating plate 4 driven by a driving mechanism. The driving mechanism includes a full gear ring 41 and a full gear 42. A full gear ring 41 is welded on the top of the placing rotating plate 4. A full gear 42 driven by a reduction motor is provided on the left side of the top of the workbench 1. The full gear ring 41 and the full gear 42 are meshed; the placing rotating plate 4 is fixedly connected to the top of the rotating drum 2; Figure 4 As shown, the placing rotating plate 4 is provided with five circles of arc holes 40 for magnetic sheets 21 of different sizes to pass through, and each circle of arc holes 40 has four; an ejection mechanism for ejecting the magnetic sheets 21 is provided inside the workbench 1, and two moving blocks 5 sliding on the Y axis are provided on the right side of the top of the workbench 1. The moving directions of the two moving blocks 5 are opposite, and the moving blocks 5 are provided with limiting side plates 6 sliding on the X axis. The bottom of the left end of the limiting side plates 6 are both rotatably provided with two convex rods 61, and two pairs of inclined grooves 62 are provided on the top of the workbench 1. The directions of the inclined grooves 62 are as shown in FIG. Figure 8As shown, the four convex rod portions 61 are respectively located in the four inclined grooves 62; the left ends of the limiting side plates 6 are fixedly connected to the side baffle rods 7, and the left ends of the side baffle rods 7 have bending portions 71, through which the magnetic sheet 21 is blocked; an electric push rod 81 is bolted to the right part of the workbench 1, and the telescopic rod of the electric push rod 81 is connected to a push plate 8 located between the two limiting side plates 6, and two upper baffle rods 9 for blocking the magnetic sheet 21 are arranged above the limiting side plates 6, and the workbench 1 is provided with an adjustment mechanism for adjusting the positions of the limiting side plates 6 and the upper baffle rods 9; it also includes a placement bar 10, and two parallel and spaced placement bars 10 are fixedly connected to the right side of the top of the workbench 1, and the contact area of ​​the magnetic sheet 21 is reduced by the placement bar 10 to reduce the friction force on the magnetic sheet 21; a pressing mechanism for pressing the rotor 20 is provided on the workbench 1, and when the magnetic sheet 21 is lifted up, the position of the rotor 20 is fixed by the pressing mechanism.

[0031] refer to Figure 5 and Figure 6 The adjustment mechanism includes a guide rail 51, a linear motor 52, an electric slide rail 1 91 and an electric slide rail 2 92. Two guide rails 51 are connected to the right side of the top of the workbench 1. The guide rails 51 are each equipped with a linear motor 52. The moving block 5 is installed on the linear motor 52. The limiting side plate 6 is each equipped with an electric slide rail 1 91. The slider of the electric slide rail 1 91 is each equipped with an electric slide rail 2 92. The two upper blocking rods 9 are respectively installed on the sliders of the two electric slide rails 2 92.

[0032] refer to Figure 2 , Figure 3 and Fig. 9 The ejection mechanism includes a lifting cylinder 111, a second electric push rod 112, a guide rod 113, a slide bar 114, a sliding block 116 and a third electric push rod 115. The second electric push rod 112 is bolted to the bottom of the workbench 1. The telescopic rod of the second electric push rod 112 is connected to the lifting cylinder 111. The lifting cylinder 111 is sleeved on the outside of the rotating cylinder 2. A guide rod 113 is welded to the lower part of the lifting cylinder 111. The slide bar 114 is slidably connected to the guide rod 113. The right bolt inside the workbench 1 It is connected to an electric push rod 3 115, and a sliding block 116 is connected to the telescopic rod of the electric push rod 3 115. The sliding block 116 is slidably connected to the sliding rod 114, and a through groove 117 is opened on the top of the workbench 1; when the lifting cylinder 111 rises, the sliding rod 114 is driven to rise through the guide rod 113, the lifting cylinder 111 passes through the workbench 1, and the top of the sliding rod 114 passes through the through groove 117, so that the magnetic sheet 21 is lifted up by the lifting cylinder 111 or the sliding rod 114.

[0033] refer to Figure 1 , Figure 2 and Fig.10The pressing mechanism includes a fixed frame 121, a lifting frame 122 and a pressing cylinder 123. The fixed frame 121 is fixedly connected to the right side of the top of the workbench 1. The lifting frame 122 driven by a linear drive is slidably connected to the fixed frame 121. The structure of the linear drive is the existing technology. The linear drive can drive the lifting frame 122 to move linearly. The lifting frame 122 is rotatably connected to a hollow pressing cylinder 123 for pressing the rotor 20 through a bearing. A through hole 124 is opened at the bottom of the pressing cylinder 123 for the rotating shaft of the rotor 20 to pass through.

[0034] First, place the rotor 20 to be assembled on the placement rotating plate 4, place a row of magnetic sheets 21 on the two placement strips 10, the two limiting side plates 6 are in contact with the front and rear sides of the magnetic sheets 21 respectively, the bent portion 71 of the side blocking rod 7 is in contact with the leftmost magnetic sheet 21, the upper blocking rod 9 is located above the magnetic sheet 21, and the magnetic sheet 21 is limited by the limiting side plates 6, the side blocking rod 7 and the upper blocking rod 9, and the leftmost magnetic sheet 21 is aligned with the innermost arc hole 40 up and down; control the linear drive to drive the lift The lowering frame 122 and the pressing cylinder 123 descend, and the pressing cylinder 123 presses down the rotor 20 placed on the rotating plate 4, and controls the electric push rod 112 to drive the lifting cylinder 111 to rise, and drives the sliding rod 114 to rise through the guide rod 113, and the lifting cylinder 111 lifts the leftmost magnetic piece 21, and the magnetic piece 21 passes through the innermost arc hole 40, so that the magnetic piece 21 is magnetically attached to the rotor 20, and in the process of lifting the leftmost magnetic piece 21, the upper blocking rod 9 will block the remaining magnetic pieces 21.

[0035] Then, the electric push rod 2 112 is controlled to drive the lifting cylinder 111 to descend and reset, and the electric push rod 1 81 is controlled to drive the push plate 8 to move left on the X-axis. The push plate 8 pushes the remaining magnetic sheets 21 to move left until the leftmost magnetic sheet 21 contacts the bent portion 71 of the side baffle 7, so that the next magnetic sheet 21 moves to the top of the slide bar 114; the reduction motor is controlled to drive the full gear 42 to rotate, and under the action of meshing, the full gear ring 41, the placement rotating plate 4 and the rotor 20 are rotated 90 degrees together. Since the pressing cylinder 123 is rotatably connected to the lifting frame 122 through the bearing, the pressing cylinder 123 presses the rotor 20, and the pressing cylinder 123 will also rotate together, and the bearing can reduce the friction force of the pressing cylinder 123 during the rotation process; similarly, the lifting cylinder 111 rises, and the lifting cylinder 111 continues to lift the magnetic sheet 21 for assembly; in this way, the rotor 20 and the magnetic sheet 21 can be automatically assembled, the assembly is automated, and the work efficiency is high.

[0036] When it is necessary to assemble a larger rotor 20 and a magnetic sheet 21, the linear motor 52 is controlled to drive the two moving blocks 5 to move away from each other on the Y axis, driving the limiting side plate 6, the side stopper 7, the electric slide rail 1 91, the electric slide rail 2 92 and the upper stopper 9 to move synchronously on the Y axis, and the distance between the two limiting side plates 6 is increased to accommodate the length of the larger magnetic sheet 21; because the convex rod portion 61 of the limiting side plate 6 is located in the inclined groove 62, under the guiding effect of the inclined groove 62, the limiting side plate 6, the side stopper 7, the electric slide rail 1 91, the electric slide rail 2 92 and the upper stopper 9 are The electric slide rail 1 91, the electric slide rail 2 92 and the upper stopper 9 will also move rightward on the X-axis at the same time; then the electric slide rail 1 91 is controlled to drive the electric slide rail 2 92 and the upper stopper 9 to move rightward on the X-axis relative to the limit side plate 6, and the electric slide rail 2 92 is controlled to drive the upper stopper 9 to move upward on the Z-axis relative to the limit side plate 6, thereby adjusting the position of the upper stopper 9 on the X-axis and the Z-axis to adapt to the thickness and height of the larger magnetic sheet 21, so that only the leftmost magnetic sheet 21 will not be blocked by the upper stopper 9. For specific status, refer to Figure 8 Control the electric push rod 115 to drive the sliding block 116 to move rightward on the X-axis, driving the slide bar 114 to slide rightward on the guide rod 113, so that the top of the slide bar 114 is aligned with the larger arc hole 40 up and down.

[0037] At this time, a row of larger magnetic sheets 21 can be placed on the placement bar 10. The larger magnetic sheets 21 can be limited by the limiting side plate 6, the side stopper 7 and the upper stopper 9. The leftmost magnetic sheet 21 is aligned with the larger arc hole 40. The pressing cylinder 123 presses the rotor 20, controls the electric push rod 112 to drive the lifting cylinder 111 to rise, drives the guide rod 113 and the slide rod 114 to rise together, and the slide rod 114 passes through the through slot 117. The slide rod 114 moves the leftmost magnetic sheet 21 to the upper and lower sides of the larger arc hole 40. The magnetic piece 21 is lifted up and passes through the larger arc hole 40, so that the magnetic piece 21 is magnetically attached to the rotor 20. At this time, the upper blocking rod 9 will block the remaining magnetic pieces 21. In this way, for rotors 20 of different sizes, the rotating plate 4 is placed with arc holes 40 of different sizes for the magnetic pieces 21 to pass through and be assembled. The positions of the limiting side plate 6, the side blocking rod 7, the upper blocking rod 9 and the sliding rod 114 can be flexibly adjusted to adapt to magnetic pieces 21 of different sizes, and the adaptability is high.

[0038] Example 2: Based on Example 1, refer to Fig.10 and Fig.11The pressing mechanism also includes a limit block 125, a screw 126, a bevel gear ring 127, a bevel gear 128 and a rotating rod 129. Four limit blocks 125 that slide in the radial direction of the pressing cylinder 123 are arranged inside the pressing cylinder 123. Four screws 126 are rotatably connected to the pressing cylinder 123. One ends of the four screws 126 are respectively threadedly connected to the four limit blocks 125. The other ends of the screws 126 are located outside the pressing cylinder 123. The outside of the pressing cylinder 123 is rotatably connected to the bevel gear ring 127. One end of the screw 126 located outside the pressing cylinder 123 is fixedly connected to the bevel gear 128. The four bevel gears 128 are all meshed with the bevel gear ring 127. The top of the bevel gear ring 127 is connected to a rotating rod 129.

[0039] When the pressing cylinder 123 descends, the four limit blocks 125 will contact the rotating shaft of the rotor 20, and the position of the rotor 20 will be limited by the limit blocks 125 to avoid the position deviation of the rotor 20. When the rotors 20 and magnetic sheets 21 of different sizes are assembled, the rotating rod 129 is manually pushed to rotate around the pressing cylinder 123, driving the bevel gear ring 127 to rotate, and the four bevel gears 128 and the four screws 126 are rotated under the action of meshing. The rotating screws 126 move the limit blocks 125 in the radial direction of the pressing cylinder 123 through the threads, and the limit blocks 125 can limit the positions of the rotors 20 of different sizes.

[0040] Embodiment 3: Based on Embodiment 2, refer to Figure 1 and Figure 8 , also includes a robotic arm 131 and a positioning frame 132. The robotic arm 131 is installed on the left side of the workbench 1. The end effector of the robotic arm 131 is installed with a clamp for clamping the rotor 20. The structure and principle of the robotic arm 131 and the clamp are the existing technology. The positioning frame 132 is fixedly connected to the upper front side of the workbench 1, and a V-shaped positioning groove 133 is opened on the top of the positioning frame 132; the rotor 20 to be assembled is placed on the positioning frame 132, and the rotor 20 is positioned by the V-shaped positioning groove 133 so that the rotor 20 is centered in the X-axis direction. Then the robotic arm 131 is controlled to make the clamp clamp the rotor 20 on the positioning frame 132 to the placement turntable 4, so as to automatically load the rotor 20 and improve the assembly efficiency.

[0041] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A rare earth permanent magnet motor rotor magnetic sheet punching assembly machine, comprising a workbench (1), characterized in that: The workbench (1) is rotatably connected to a rotating drum (2), the top of the workbench (1) is connected to a plurality of connecting plates (3), the connecting plates (3) are rotatably connected to a placement rotating plate (4) driven by a driving mechanism, the placement rotating plate (4) is fixedly connected to the rotating drum (2), the placement rotating plate (4) is provided with a plurality of circles of arc-shaped holes (40) for magnetic sheets (21) of different sizes to pass through, an ejection mechanism for ejecting the magnetic sheets (21) is provided inside the workbench (1), and two moving blocks (5) are slidably connected to the top of the workbench (1), the moving blocks (5) moving in opposite directions are 5) are provided with a limit side plate (6) sliding on the X-axis, and the end of the limit side plate (6) close to the rotating drum (2) is connected to a side stop rod (7), a push plate (8) driven by an electric push rod (81) is provided between the two limit side plates (6), two upper stop rods (9) are provided above the limit side plates (6), and an adjustment mechanism for adjusting the position of the limit side plates (6) and the upper stop rods (9) is provided on the workbench (1); a pressing mechanism for pressing the rotor (20) is provided on the workbench (1), and when the magnetic sheet (21) is lifted up, the position of the rotor (20) is fixed by the pressing mechanism; The ejection mechanism comprises a lifting cylinder (111), the workbench (1) is internally connected with an electric push rod 2 (112), the telescopic rod of the electric push rod 2 (112) is connected with the lifting cylinder (111), the lifting cylinder (111) is sleeved on the outside of the rotating cylinder (2), the lifting cylinder (111) is connected with a guide rod (113), the guide rod (113) is slidably connected with a slide rod (114), the workbench (1) is internally connected with an electric push rod 3 (115), the telescopic rod of the electric push rod 3 (115) is connected with a slide block (116), the slide block (116) is slidably connected with the slide rod (114), and a through slot (117) is provided on the top of the workbench (1); when the lifting cylinder (111) rises, the top end of the slide rod (114) passes through the through slot (117) to lift the magnetic sheet (21); The pressing mechanism comprises a fixing frame (121), the top of the workbench (1) is connected to the fixing frame (121), a lifting frame (122) driven by a linear drive is slidably connected to the fixing frame (121), a hollow pressing cylinder (123) for pressing the rotor (20) is rotatably connected to the lifting frame (122) via a bearing, and the bottom of the pressing cylinder (123) is provided with a through hole (124) for the rotation shaft of the rotor (20) to pass through; The pressing mechanism further comprises a limit block (125). The pressing cylinder (123) is provided with at least four limit blocks (125) which slide in the radial direction of the pressing cylinder (123). The pressing cylinder (123) is rotatably connected with a screw rod (126) whose number is the same as the limit blocks (125). One end of the screw rod (126) is threadedly connected to the limit block (125). The other end of the screw rod (126) is located outside the pressing cylinder (123). The outside of the pressing cylinder (123) is rotatably connected with a bevel gear ring (127). One end of the screw rod (126) located outside the pressing cylinder (123) is connected with a bevel gear (128). The bevel gears (128) are meshed with the bevel gear ring (127). The top of the bevel gear ring (127) is connected with a rotating rod (129).

2. A rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine as claimed in claim 1, characterized in that: The bottom of the limiting side plate (6) is rotatably provided with two protruding rods (61), the top of the workbench (1) is provided with two pairs of inclined grooves (62), the four protruding rods (61) are respectively located in the four inclined grooves (62), and the end of the side blocking rod (7) close to the rotating drum (2) has a bent portion (71).

3. A rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine as claimed in claim 2, characterized in that: The driving mechanism comprises a full-tooth ring (41), the placement rotating plate (4) is connected to the full-tooth ring (41), the top of the workbench (1) is provided with a full gear (42) driven by a reduction motor, and the full-tooth ring (41) and the full gear (42) are meshed.

4. A rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine as claimed in claim 3, characterized in that: The adjustment mechanism comprises a guide rail (51), two guide rails (51) are connected to the top of the workbench (1), a linear motor (52) is installed on each of the guide rails (51), the moving block (5) is installed on the linear motor (52), an electric slide rail 1 (91) is installed on each of the limiting side plates (6), an electric slide rail 2 (92) is installed on each of the sliders of the electric slide rail 1 (91), and two upper blocking rods (9) are respectively installed on the sliders of the two electric slide rails 2 (92).

5. A rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine as claimed in claim 4, characterized in that: The rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine also includes placement bars (10), and the top of the workbench (1) is fixedly connected with two placement bars (10).

6. A rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine as claimed in claim 5, characterized in that: The rare earth permanent magnet motor rotor magnetic sheet punching and assembly machine further comprises a mechanical arm (131), the mechanical arm (131) being mounted on the left side of the workbench (1), a clamping claw for clamping the rotor (20) being mounted on the end effector of the mechanical arm (131), a positioning frame (132) being connected to the workbench (1), and a V-shaped positioning groove (133) being formed on the positioning frame (132).

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