High-efficiency motor iron core laminating equipment

Abstract

The invention discloses high-efficiency motor iron core laminating equipment which comprises a base, a support fixedly mounted at the top of the base, a top plate fixedly mounted at the top of the support, an air cylinder mounted at the top of the top plate, a punch structure mounted on an output shaft of the air cylinder, and a stepping motor mounted in the center of the inner wall of the base. A rotating shaft is mounted on an output shaft of the stepping motor, and the rotating shaft and the base are rotationally mounted through a bearing; and the stamping disc is rotationally installed at the top of the base, a groove is formed in the bottom of the stamping disc, and the inner wall of the groove and the top of the rotating shaft are fixedly installed. According to the device, through three core technologies of electromagnetic-mechanical composite driving, a multi-stage buffer structure and precise rotation positioning, the positioning repetition precision, the controllable damping characteristic of the magnetorheological fluid damper and closed-loop control formed by a pressure sensing feedback system, the lamination quality consistency is remarkably improved, electromagnetic limiting and electromagnetic stripping of a motor iron core are facilitated, and the production efficiency is improved. The use effect is good and the efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of laminating iron cores of drive motors for new energy vehicles, and in particular to a high-efficiency motor core laminating device. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source (or use conventional automotive fuels and adopt new on-board power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. The production and processing of new energy vehicles require the use of motors. Non-oriented silicon steel is used as the material for preparing motor cores. During the application process, it mainly undergoes processing steps such as striping, punching, welding, riveting, and lamination. The related processing is prone to stress that deteriorates the electromagnetic properties of the silicon steel material, thereby affecting the performance of the motor.

[0003] Authorization announcement number: CN114069986B discloses a high-efficiency compressor motor core processing method, which belongs to the field of full-process non-oriented silicon steel application. The present invention adopts non-oriented silicon steel coils, and sequentially performs striping, punching, riveting, core heat treatment and lamination processes, wherein in the punching process, the gap d=(10%~15%)H between the punch dies is set, d is the gap between the punch dies, and H is the thickness of the non-oriented silicon steel. In view of the current situation that the application efficiency of compressor motor cores is still insufficient, the present invention uses appropriate processing methods to make the prepared compressor motor cores have high dimensional accuracy, high production efficiency, no sticking after heat treatment, and improved core efficiency. After subsequent conventional processes such as winding and assembly, the efficiency of the compressor motor is finally improved to meet the requirements of high efficiency.

[0004] The stacking pressure of the hydraulic stacking equipment in the prior art fluctuates greatly: the inertia of the hydraulic system causes pressure overshoot (typical fluctuation is ±8%), resulting in micro deformation of the silicon steel sheets and inconvenient rapid removal of the motor core stack. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the present invention provides a high-efficiency motor core stacking equipment. The stacking pressure of the existing hydraulic stacking equipment fluctuates greatly: the inertia of the hydraulic system causes pressure overshoot (typical fluctuation ±8%), resulting in microscopic deformation of the silicon steel sheet, and the motor core stacking is not convenient for rapid removal.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A high-efficiency motor core lamination device, comprising:

[0008] A base, a bracket is fixedly installed on the top of the base, a top plate is fixedly installed on the top of the bracket, a cylinder is installed on the top of the top plate, and a punch structure is installed on the output shaft of the cylinder;

[0009] The stepper motor is installed at the center of the inner wall of the base. The output shaft of the stepper motor is equipped with a rotating shaft. The rotating shaft and the base are rotatably installed through bearings.

[0010] The punching plate is rotatably mounted on the top of the base. A groove is provided at the bottom of the punching plate. The inner wall of the groove is fixedly mounted to the top of the rotating shaft. Two punching grooves are symmetrically provided on the top of the punching plate. Two limit plate structures are symmetrically arranged in the two punching grooves. A stripping structure is provided in each of the two punching grooves. The stripping structure is located between the corresponding two limit plate structures.

[0011] The first electromagnet and the two second electromagnets are all installed on the top of the base. The two stripping structures are adapted to the first electromagnet. The bottom magnetic poles of the two stripping structures are opposite to the top magnetic poles of the first electromagnet. The four limiting plate structures are adapted to the two second electromagnets. The outer magnetic poles of the four limiting plate structures are opposite to the inner magnetic poles of the two second electromagnets.

[0012] Preferably, a controller is installed on the top of the base, a power switch and an emergency stop switch are installed on the side of the base, and a bottom cover is installed on the bottom of the base.

[0013] Preferably, two rectangular sliding holes are symmetrically opened on the inner wall of the bottom of the stamping groove, and the two limiting plate structures are adapted to the two rectangular sliding holes.

[0014] Preferably, the limit plate structure includes an arc-shaped limit plate, which is located inside the stamping groove. A rectangular slide bar is fixedly installed on the bottom of the arc-shaped limit plate, and a second permanent magnet is fixedly installed on the outside of the rectangular slide bar. The second permanent magnet is adapted to the second electromagnet, and the magnetic poles of the second permanent magnet and the second electromagnet on the side where they are close to each other are opposite; the two second electromagnets generate magnetism to push the two second permanent magnets close to each other, and the two second permanent magnets drive the two rectangular slide bars close to each other.

[0015] Preferably, four support blocks are fixedly installed on the bottom inner wall of the groove, and the four support blocks are symmetrically arranged in pairs. The same limit rod is fixedly installed between the two support blocks, and a limit hole is provided on the rectangular slide rod. The limit hole is slidably connected to the outer side of the limit rod. A reset spring is fixedly installed between the rectangular slide rod and the support block, and the reset spring is sleeved on the outer side of the limit rod; the second permanent magnet moves away from the second electromagnet, and the two arc-shaped limit plates move away from each other through the tension of the reset spring, thereby releasing the limit on the motor core.

[0016] Preferably, the stripping structure includes a stripping plate, a stripping accommodating groove is opened on the bottom inner wall of the stamping groove, the stripping plate and the stripping accommodating groove are seamlessly slidably connected, two round rods are fixedly installed on the bottom of the stripping plate, the bottom of the two round rods is fixedly installed with the same insulating plate, the bottom of the insulating plate is fixedly installed with a first permanent magnet, the first permanent magnet is adapted to the first electromagnet, and the magnetic poles of the first permanent magnet and the first electromagnet on the side close to each other are opposite; the first electromagnet generates magnetism to push the first permanent magnet to move upward, and the first permanent magnet pushes the insulating plate to move upward, and the insulating plate pushes the motor core to move upward through the two round rods and the stripping plate to extend to the top of the stamping groove, so that the motor core can be conveniently removed and replaced.

[0017] Preferably, two circular holes are opened on the inner wall of the bottom of the stripping accommodating tank, the round rod is slidably connected to the inner wall of the circular hole, and two reset springs are fixedly installed between the top of the insulating plate and the inner wall, and the two reset springs are sleeved on the outside of the two circular rods.

[0018] Preferably, a plurality of balls are embedded in the bottom edge of the stamping plate, and the plurality of balls are slidably connected to the top of the base.

[0019] Preferably, the punch structure includes a fixed plate, the top of the fixed plate is fixedly mounted on the output shaft of the cylinder, a pressure sensing plate is mounted on the bottom of the fixed plate, a pressure sensor is provided between the fixed plate and the pressure sensing plate, and a sensing line is connected to the pressure sensor.

[0020] Preferably, a plurality of magnetorheological fluid dampers are installed at the bottom of the pressure sensing plate, a same shock-absorbing plate is installed at the bottom ends of the plurality of magnetorheological fluid dampers, a plurality of guide rods are slidably installed on the outer side of the shock-absorbing plate, a same mounting plate is installed at the bottom ends of the plurality of guide rods, a plurality of coil springs are installed between the mounting plate and the shock-absorbing plate, the coil springs are sleeved on the outer sides of the corresponding guide rods, and a same punching head is installed at the bottom of the mounting plate through bolts.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Composite drive technology achieves a leapfrog improvement in production efficiency and optimizes rotary positioning efficiency: the use of stepper motors and ball bearings to coordinate drive enables the punch plate to switch 90° positions in ≤ 0.5 seconds, which is 42% faster than the traditional hydraulic drive solution. The dual-position parallel operation mode improves the effective working time utilization rate.

[0023] 2. A breakthrough in electromagnetic-mechanical linkage response, with a clamping mechanism response time of 15ms (traditional mechanical clamps > 200ms), adapting to the stacking requirements of 0.1-1.5mm silicon steel sheets. The stripping and lifting system has a stroke of 15mm and a completion cycle of < 0.8 seconds, which is three times more efficient than pneumatic demoulding. This facilitates electromagnetic limiting and electromagnetic stripping of motor cores, with good use effect and high efficiency.

[0024] 3. The multi-stage buffer system ensures precision machining quality and dynamic stamping stability control: The magnetorheological fluid damper (damping force 3000N) and gradient spring composite buffer structure control the stamping force fluctuation within ±2%. The pressure sensing feedback system (1kHz sampling rate) achieves 0.5-50kN stamping force adaptive adjustment, the stamping stroke error compensation accuracy is ±5μm, the interlayer burr incidence rate is reduced to below 0.3%, and the stacking pressure fluctuation is small.

[0025] The present invention uses three core technologies: electromagnetic-mechanical composite drive, multi-stage buffer structure, and precise rotational positioning, to achieve positioning repeatability accuracy, which improves efficiency by more than 40% compared with traditional equipment. The closed-loop control formed by the controllable damping characteristics of the magnetorheological fluid damper and the pressure sensing feedback system controls the impact force fluctuation within ±2%, significantly improving the consistency of the lamination quality, facilitating electromagnetic limiting and electromagnetic stripping of the motor core, and having good use effect and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the base, stepping motor, bracket and related parts of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the base, rotating shaft, first electromagnet, second electromagnet and related parts of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the punch structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the front structure of the punch structure of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the stamping disc of the present invention;

[0033] Figure 8 It is a bottom view structural diagram of the punching plate, support block, limiting rod, stripping structure and related parts of the present invention;

[0034] Figure 9 It is a structural schematic diagram of the punching plate, punching groove, rectangular sliding hole and related parts of the present invention;

[0035] Figure 10 It is a bottom view structural diagram of the punching plate, support block, limit rod and related parts of the present invention;

[0036] Figure 11It is a structural schematic diagram of the stripping structure of the present invention;

[0037] Figure 12 This is a schematic diagram of the bottom view of the stripping structure of the present invention;

[0038] Figure 13 Schematic diagram of the structure of the limiting plate structure of the present invention;

[0039] Figure 14 It is a bottom view structural schematic diagram of the limiting plate structure of the present invention.

[0040] Including: 1. Base; 11. Bottom cover;

[0041] 2. Stamping plate; 21. Stamping groove; 211. Rectangular sliding hole; 212. Stripping accommodating groove; 213. Round hole; 22. Limiting plate structure; 221. Arc-shaped limiting plate; 222. Rectangular sliding rod; 223. Return spring; 224. Second permanent magnet; 225. Limiting hole; 23. Ball bearing; 24. Support block; 25. Limiting rod; 26. Stripping structure; 261. Stripping plate; 262. Round rod; 263. Return spring; 264. Insulating plate; 265. First permanent magnet; 27. Groove;

[0042] 3. Controller; 31. Power switch; 32. Emergency stop switch; 4. Bracket; 41. Top plate; 5. Cylinder;

[0043] 6. Punch structure; 61. Fixing plate; 62. Pressure sensing plate; 63. Shock-absorbing plate; 64. Mounting plate; 65. Punch head; 66. Pressure sensor; 661. Sensing wire; 67. Magnetorheological fluid damper; 68. Guide rod; 69. Coil spring;

[0044] 7. Stepper motor; 71. Rotating shaft; 8. First electromagnet; 9. Second electromagnet. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific examples, but the following examples are only preferred embodiments of the present invention, not all. Based on the examples in the embodiments, other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. The experimental methods in the following examples, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels.

[0046] Example 1

[0047] like Figures 1-14As shown, the present invention provides a high-efficiency motor core lamination device, including a base 1, a stamping disk 2, a stepping motor 7, a first electromagnet 8 and two second electromagnets 9. A bracket 4 is fixedly installed on the top of the base 1, a top plate 41 is fixedly installed on the top of the bracket 4, a cylinder 5 is installed on the top of the top plate 41, a punch structure 6 is installed on the output shaft of the cylinder 5, the stepping motor 7 is installed at the center of the inner wall of the base 1, a rotating shaft 71 is installed on the output shaft of the stepping motor 7, the rotating shaft 71 and the base 1 are rotatably installed through bearings, the stamping disk 2 is rotatably installed on the top of the base 1, a plurality of balls 23 are embedded in the bottom edge of the stamping disk 2, and the plurality of balls 23 are all slidably connected to the top of the base 1, a groove 27 is provided at the bottom of the stamping disk 2, the inner wall of the groove 27 is fixedly installed to the top of the rotating shaft 71, and the stamping Two stamping grooves 21 are symmetrically provided on the top of the pressure plate 2, and two limit plate structures 22 are symmetrically arranged in the two stamping grooves 21. A stripping structure 26 is provided in each of the two stamping grooves 21, and the stripping structure 26 is located between the corresponding two limit plate structures 22. The first electromagnet 8 and the two second electromagnets 9 are all installed on the top of the base 1. The two stripping structures 26 are both adapted to the first electromagnet 8, and the bottom magnetic poles of the two stripping structures 26 are opposite to the top magnetic poles of the first electromagnet 8. The four limit plate structures 22 are adapted to the two second electromagnets 9, and the outer magnetic poles of the four limit plate structures 22 are opposite to the inner magnetic poles of the two second electromagnets 9. A controller 3 is installed on the top of the base 1, and a power switch 31 and an emergency stop switch 32 are installed on the side of the base 1. A bottom cover 11 is installed on the bottom of the base 1.

[0048] Specifically, a composite drive system consisting of a stepper motor 7 (step angle 0.036°) and a precision ball assembly (diameter 6mm silicon nitride ceramic ball) is used to achieve a repeatable positioning accuracy of the stamping disk of ±0.01mm. The ball support structure contains 32 precision balls with a diameter tolerance controlled at ±0.005mm and a friction coefficient of <0.001.

[0049] More specifically, the controller 3 uses a 32-bit ARM Cortex-M7 processor with a control cycle of 5ms, an integrated IO-Link communication module, supports 0.1ms-level solenoid valve control timing, and the emergency stop switch 32 complies with the IEC 60947-5-5 standard with a disconnection time of <20ms.

[0050] like Figure 1 、 Figure 7 、 Figure 9As shown, in this embodiment, two rectangular sliding holes 211 are symmetrically opened on the bottom inner wall of the stamping groove 21, and the two limit plate structures 22 are adapted to the two rectangular sliding holes 211. The limit plate structure 22 includes an arc-shaped limit plate 221, and the arc-shaped limit plate 221 is located inside the stamping groove 21. A rectangular slide bar 222 is fixedly installed on the bottom of the arc-shaped limit plate 221, and a second permanent magnet 224 is fixedly installed on the outer side of the rectangular slide bar 222. The second permanent magnet 224 is adapted to the second electromagnet 9, and the magnetic poles of the second permanent magnet 224 and the second electromagnet 9 on the side where they are close to each other are opposite. The two second electromagnets 9 generate magnetism to push the two second permanent magnets 224 close to each other, and the two second permanent magnets 224 drive the two rectangular slide bars 222 close to each other.

[0051] Specifically, the electromagnet-permanent magnet composite drive system (the power density of the second electromagnet 9 reaches 1.8W / cm 3 ), with a return spring of 30N / m elastic coefficient

[0052] The arc limit plate closing response time is 15ms, the clamping force range is adjustable from 50-200N, and the support block 24 spacing tolerance is ±0.02mm.

[0053] like Figure 7-10 、 Figure 13 、 Figure 14 As shown, in this embodiment, four support blocks 24 are fixedly installed on the bottom inner wall of the groove 27, and the four support blocks 24 are symmetrically arranged in pairs. The same limiting rod 25 is fixedly installed between the two support blocks 24, and a limiting hole 225 is provided on the rectangular slide bar 222. The limiting hole 225 is slidably connected to the outer side of the limiting rod 25. A reset spring 223 is fixedly installed between the rectangular slide bar 222 and the support block 24, and the reset spring 223 is sleeved on the outer side of the limiting rod 25; the second permanent magnet 224 is away from the second electromagnet 9, and the two arc-shaped limiting plates 221 are moved away from each other by the pulling force of the reset spring 223, thereby releasing the limit on the motor core.

[0054] Specifically, the limit rod 25 is made of 40Cr steel with surface nitriding treatment, with a diameter of 12 mm and a straightness of 0.01 mm / m. The return tension spring 223 is made of SUS304-WPB spring steel wire with a diameter of 1.2 mm and a pre-tightening force of 15N±2N.

[0055] like Figure 11 、 Figure 12As shown, in this embodiment, the stripping structure 26 includes a stripping plate 261, and a stripping accommodating groove 212 is opened on the bottom inner wall of the stamping groove 21. The stripping plate 261 is seamlessly slidably connected to the stripping accommodating groove 212, and two round rods 262 are fixedly installed on the bottom of the stripping plate 261. The bottom of the two round rods 262 is fixedly installed with the same insulating plate 264, and the bottom of the insulating plate 264 is fixedly installed with a first permanent magnet 265. The first permanent magnet 265 is adapted to the first electromagnet 8, and the magnetic poles of the first permanent magnet 265 and the first electromagnet 8 on the side close to each other are opposite; the first electromagnet 8 generates magnetism to push the first permanent magnet 265 to move upward, and the first permanent magnet 265 pushes the insulating plate 264 to move upward. The insulating plate 264 pushes the motor core to move upward through the two round rods 262 and the stripping plate 261 to extend to the top of the stamping groove 21, so that the motor core can be conveniently removed and replaced.

[0056] Specifically, the first electromagnet 8 generates a 1.2T transient magnetic field and cooperates with the NdFeB permanent magnet (N38SH grade) to achieve a 15mm lifting stroke.

[0057] like Figure 11 、 Figure 12 As shown, in this embodiment, two circular holes 213 are opened on the inner wall of the bottom of the stripping accommodating groove 212, the round rod 262 is slidably connected to the inner wall of the circular hole 213, and two reset springs 263 are fixedly installed between the top of the insulating plate 264 and the inner wall of 27. The two reset springs 263 are sleeved on the outside of the two circular rods 262. Through the elastic force of the reset spring 263, the stripping plate 261 enters the stripping accommodating groove 212 for storage.

[0058] Specifically, the return spring 263 is made of 0.8mm diameter piano steel wire, with a stiffness coefficient of 8N / mm and a fatigue life of >10 6 Secondly, the insulating plate 264 is made of 2mm thick epoxy resin glass fiber reinforced plastic plate with a voltage resistance level of 3kV / mm, and the surface of the round rod 262 is hard chrome plated (thickness 15μm) with a straightness of 0.005mm.

[0059] In this embodiment, the working mode is to turn on the power supply and the controller 3, and place the motor core on the new energy vehicle in the inside of the stamping slot 21. The stepper motor 7 drives the rotating shaft 71 to rotate, and the rotating shaft 71 drives the stamping disk 2 to rotate 90 degrees. The stamping disk 2 is slidably connected to the top of the base 1 through the ball bearing 23 to improve the stability of the stamping disk 2, and move the stamping slot 21 to the bottom of the punch structure 6. The two second electromagnets 9 generate magnetism to push the two second permanent magnets 224 close to each other. The two second permanent magnets 224 drive the two rectangular slide bars 222 close to each other. The two rectangular slide bars 222 slide on the outside of the limit rod 25. The two reset springs 223 are in tensile deformation. The two rectangular slide bars 222 drive the two arc-shaped limit plates 221 to limit the motor core. At the same time, the motor core on another new energy vehicle is stacked and placed in the inside of another stamping slot 21. The cylinder 5 pushes the punch structure 6 to move downward to stack the motor core, controls the punch structure 6 to leave the stamping groove 21, and controls the stamping disk 2 to rotate 90 degrees again to continue the stacking process. The processed motor core moves to the initial position, and the second permanent magnet 224 moves away from the second electromagnet 9. The two arc-shaped limit plates 221 are moved away from each other through the tension of the reset spring 223, releasing the fixation of the motor core. The first electromagnet 8 generates magnetism to push the first permanent magnet 265 to move upward. The first permanent magnet 265 pushes the insulating plate 264 to move upward. The insulating plate 264 pushes the motor core upward through two round rods 262 and the stripping plate 261 to extend to the top of the stamping groove 21, which can facilitate the removal and replacement of the motor core. The response time of the stamping disk rotation drive system is <50ms, the maximum speed is 30r / min, and it can achieve a switching time of 0.5s per 90° workstation.

[0060] Example 2

[0061] This embodiment is further optimized based on the first embodiment, and the parts that are the same as the above technical solutions will not be repeated here. Figure 5 、 Figure 6 As shown, in order to better realize the present invention, the following setting method is particularly adopted: in this embodiment, the punch structure 6 includes a fixed plate 61, the top of the fixed plate 61 is fixedly installed with the output shaft of the cylinder 5, and a pressure sensing plate 62 is installed at the bottom of the fixed plate 61. A pressure sensor 66 is provided between the fixed plate 61 and the pressure sensing plate 62, and a sensing line 661 is connected to the pressure sensor 66. A plurality of magnetorheological fluid dampers 67 are installed at the bottom of the pressure sensing plate 62, and the bottom ends of the plurality of magnetorheological fluid dampers 67 are installed with the same shock-absorbing plate 63. A plurality of guide rods 68 are slidably installed on the outer side of the shock-absorbing plate 63, and the bottom ends of the plurality of guide rods 68 are installed with the same mounting plate 64. A plurality of coil springs 69 are installed between the mounting plate 64 and the shock-absorbing plate 63, and the coil springs 69 are sleeved on the outer sides of the corresponding guide rods 68. The bottom of the mounting plate 64 is installed with the same punch head 65 by bolts.

[0062] In this embodiment, the working mode is that the fixed plate 61 pushes the pressure sensing plate 62 downward through the pressure sensor 66, and the pressure sensing plate 62 pushes the magnetorheological fluid damper 67, the shock absorbing plate 63, the coil spring 69, the mounting plate 64 and the punch head 65 downward. The motor core is stacked by the punch head 65 to generate the first-level buffer: the pre-stressing structure of the coil spring 69 absorbs the initial impact, and the asymmetric variable pitch spring stiffness gradient is adopted. The pre-stressing amount is adjustable in the range of 5-15mm to adapt to different thickness laminations. Second-level buffer: the magnetorheological fluid damper 67 responds dynamically, the coil winding generates a controllable magnetic field of 0.5-1.2T, and the viscosity adjustment response time is <10ms, which improves the stamping effect. After the stamping is completed

[0063] Specifically, the coil spring 69 adopts an asymmetric variable pitch design (pitch gradient 0.2-0.5mm), the preload is continuously adjustable from 5 to 15mm, the magnetorheological fluid damper 67 has a built-in 4000-turn electromagnetic coil, a maximum damping force of 3000N, a response time of <10ms, the pressure sensor 66 has a range of 0-50kN, an accuracy of ±0.5% FS, a sampling frequency of 1kHz, the guide rod 68 is coated with a diamond-like coating, the friction coefficient is <0.05, and the diameter has a 20h7 level tolerance.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency motor core lamination device, characterized by: include: A base (1), a bracket (4) is fixedly mounted on the top of the base (1), a top plate (41) is fixedly mounted on the top of the bracket (4), a cylinder (5) is mounted on the top of the top plate (41), and a punch structure (6) is mounted on the output shaft of the cylinder (5); A stepper motor (7) is mounted at the center of the inner wall of the base (1); a rotating shaft (71) is mounted on the output shaft of the stepper motor (7); and the rotating shaft (71) and the base (1) are rotatably mounted via bearings; The punching disc (2) is rotatably mounted on the top of the base (1). A groove (27) is provided on the bottom of the punching disc (2). The inner wall of the groove (27) is fixedly mounted on the top of the rotating shaft (71). Two punching grooves (21) are symmetrically provided on the top of the punching disc (2). Two limiting plate structures (22) are symmetrically provided in the two punching grooves (21). A stripping structure (26) is provided in each of the two punching grooves (21). The stripping structure (26) is located between the corresponding two limiting plate structures (22). The first electromagnet (8) and the two second electromagnets (9) are both mounted on the top of the base (1); the two stripping structures (26) are both matched with the first electromagnet (8); and the four limiting plate structures (22) are matched with the two second electromagnets (9).

2. The high-efficiency motor core lamination equipment according to claim 1, characterized in that: A controller (3) is installed on the top of the base (1), a power switch (31) and an emergency stop switch (32) are installed on the side of the base (1), and a bottom cover (11) is installed on the bottom of the base (1).

3. The high-efficiency motor core lamination equipment according to claim 1, characterized in that: Two rectangular sliding holes (211) are symmetrically provided on the inner wall of the bottom of the punching groove (21), and the two limiting plate structures (22) are adapted to the two rectangular sliding holes (211).

4. The high-efficiency motor core lamination equipment according to claim 1, characterized in that: The limiting plate structure (22) comprises an arc-shaped limiting plate (221), the arc-shaped limiting plate (221) is located inside the stamping groove (21), a rectangular slide bar (222) is fixedly mounted on the bottom of the arc-shaped limiting plate (221), a second permanent magnet (224) is fixedly mounted on the outer side of the rectangular slide bar (222), the second permanent magnet (224) is adapted to the second electromagnet (9), and the magnetic poles of the second permanent magnet (224) and the second electromagnet (9) on the side where they are close to each other are opposite.

5. The high-efficiency motor core lamination equipment according to claim 4, characterized in that: Four support blocks (24) are fixedly installed on the inner wall of the bottom of the groove (27), and the four support blocks (24) are symmetrically arranged in pairs. A same limiting rod (25) is fixedly installed between two support blocks (24). A limiting hole (225) is provided on the rectangular slide bar (222), and the limiting hole (225) is slidably connected to the outer side of the limiting rod (25). A reset spring (223) is fixedly installed between the rectangular slide bar (222) and the support block (24), and the reset spring (223) is sleeved on the outer side of the limiting rod (25).

6. The high-efficiency motor core lamination equipment according to claim 1, characterized in that: The stripping structure (26) includes a stripping plate (261), a stripping accommodating groove (212) is provided on the bottom inner wall of the punching groove (21), the stripping plate (261) and the stripping accommodating groove (212) are seamlessly slidably connected, two round rods (262) are fixedly installed on the bottom of the stripping plate (261), the bottom of the two round rods (262) are fixedly installed with the same insulating plate (264), the bottom of the insulating plate (264) is fixedly installed with a first permanent magnet (265), and the first permanent magnet (265) is adapted to the first electromagnet (8).

7. The high-efficiency motor core lamination equipment according to claim 6, characterized in that: Two circular holes (213) are provided on the inner wall of the bottom of the stripping accommodating groove (212), and the round rod (262) is slidably connected to the inner wall of the circular hole (213). Two reset springs (263) are fixedly installed between the top of the insulating plate (264) and the inner wall of (27), and the two reset springs (263) are sleeved on the outside of the two round rods (262).

8. The high-efficiency motor core lamination equipment according to claim 1, characterized in that: A plurality of balls (23) are embedded in the bottom edge of the punching plate (2), and the plurality of balls (23) are all slidably connected to the top of the base (1).

9. The high-efficiency motor core lamination equipment according to claim 5, characterized in that: The punch structure (6) includes a fixed plate (61), the top of the fixed plate (61) is fixedly mounted on the output shaft of the cylinder (5), a pressure sensing plate (62) is mounted on the bottom of the fixed plate (61), a pressure sensor (66) is provided between the fixed plate (61) and the pressure sensing plate (62), and a sensing line (661) is connected to the pressure sensor (66).

10. The high-efficiency motor core lamination equipment according to claim 9, characterized in that: A plurality of magnetorheological fluid dampers (67) are installed at the bottom of the pressure sensing plate (62), a common shock-absorbing plate (63) is installed at the bottom ends of the plurality of magnetorheological fluid dampers (67), a plurality of guide rods (68) are slidably installed on the outer side of the shock-absorbing plate (63), a common mounting plate (64) is installed at the bottom ends of the plurality of guide rods (68), a plurality of coil springs (69) are installed between the mounting plate (64) and the shock-absorbing plate (63), the coil springs (69) are sleeved on the outer sides of the corresponding guide rods (68), and a common punch head (65) is installed at the bottom of the mounting plate (64) via bolts.

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