Large shielded motor rotor lamination hot stacking process

Abstract

The application relates to a large shielding motor rotor lamination hot stacking process, which comprises the following steps: S1, using an automatic lamination device to automatically sleeve and stack a plurality of rotor laminations on a positioning shaft, and the automatic lamination device automatically aligns the slot of the plurality of rotor laminations; S2, moving the positioning shaft with the stacked rotor laminations into a heating device, the heating device is provided with a dispersing device, and the dispersing device is used for increasing the spacing between the plurality of rotor laminations on the positioning shaft; S3, re-stacking the heated rotor laminations, then using a hydraulic machine to compress the stacked rotor laminations, keeping the pressure until the temperature of the rotor laminations cools to room temperature, and finally forming a rotor core. When an operator performs heat treatment on the rotor laminations, the dispersing device is used to disperse the rotor laminations on the positioning shaft, so that each rotor lamination can directly contact hot air, and the uneven heating condition of the rotor laminations at different positions on the positioning shaft is improved.

Description

Technical Field

[0001] This application relates to the field of rotors, and in particular to a hot lamination process for rotor laminations of a large shielded motor. Background Technology

[0002] The rotor is the rotating part of the electric motor, consisting of components such as the rotor core, rotor windings, and shaft. Its function is to generate rotational torque under the influence of a rotating magnetic field. The rotor core is made of multiple rotor laminations stacked together.

[0003] The rotor core production process involves stacking multiple rotor laminations on a positioning shaft, ensuring that adjacent rotor laminations overlap, then feeding the positioning shaft with the stacked rotor laminations into a heating device for heating, and finally using a hydraulic press to press the heated rotor laminations together to form the rotor core.

[0004] The above-mentioned technical solutions have the following defects: because multiple rotor laminations are stacked together for heating during the heating process, the rotor laminations in different positions will be heated unevenly, which will affect the quality of the rotor core after forming. Summary of the Invention

[0005] To improve the uneven heating of rotor laminations at different positions on the positioning shaft, this application provides a hot stacking process for rotor laminations of large shielded motors.

[0006] This application provides a hot stacking process for large shielded motor rotor laminations, employing the following technical solution:

[0007] A hot lamination process for large shielded motor rotor laminations includes the following steps:

[0008] S1, using an automatic lamination sorting device to automatically fit and stack multiple rotor laminations on the positioning shaft, and the automatic lamination sorting device automatically aligns the grooves of the multiple rotor laminations.

[0009] S2, the positioning shaft with the stacked rotor laminations is moved into the heating device, which is equipped with a dispersing device to increase the spacing between the multiple rotor laminations on the positioning shaft;

[0010] S3, the heated rotor laminations are stacked together again, and then a hydraulic press is used to press the stacked rotor laminations together, maintaining the pressure until the rotor laminations cool down to room temperature, finally forming the rotor core.

[0011] By adopting the above technical solution, when the operator heat-treats the rotor laminations, the dispersing device is used to disperse the rotor laminations on the positioning shaft. The heat can be directly applied to each rotor lamination, without the need to transfer heat through contact between adjacent rotor laminations. This can improve the heating speed and make the heating of each rotor lamination more uniform, thus improving the uneven heating of rotor laminations at different positions on the positioning shaft.

[0012] Preferably, the heating device includes a drive component, a cover with a heating chamber, and a hot air blower disposed within the heating chamber. A hollow disk is rotatably connected within the heating chamber. The drive component drives the hollow disk to rotate. The rotation axis of the hollow disk is horizontally oriented. A mounting base is movably connected to the hollow disk. One end of the positioning shaft is provided with a base. The mounting base is provided with a locking device for fixing the base. The axial direction of the positioning shaft is perpendicular to the axial direction of the hollow disk. When the hollow disk rotates to a position where the positioning shaft is close to or at a horizontal position, the dispersing device drives the mounting base to vibrate.

[0013] By adopting the above technical solution, the operator uses the locking device to fix the base on the mounting seat, and then the driving component drives the hollow disk to rotate, so that the axial direction of the positioning shaft is close to the horizontal state. Then the dispersing device drives the mounting seat to vibrate, so that the multiple rotor laminations on the positioning shaft can be dispersed.

[0014] Preferably, the positioning shaft includes a main shaft and multiple positioning rods, each positioning rod corresponding to a multiple groove on a rotor lamination. The positioning rods are slidably connected to the main shaft along a direction perpendicular to its axis. A main rod is slidably connected inside the main shaft along its axis, and the multiple positioning rods enclose the main rod. Multiple first blocks are provided on the outer wall of the main rod, and second blocks are provided on the side of each positioning rod facing the main rod. The multiple first blocks correspond to the multiple second blocks. A first inclined surface is formed on the side of each first block facing the corresponding second block, and a second inclined surface is formed on the side of each second block facing the first block. A second inclined surface matching the first inclined surface is provided. The distance from the first inclined surface to the base gradually increases from the end near the positioning rod to the end away from the positioning rod. A first spring is provided on the main rod to drive the main rod to move away from the base. A second spring is provided on the positioning rod to drive the positioning rod to always move towards the main rod. When no external force is applied to the main rod and the positioning rod, the first inclined surface is attached to the corresponding second inclined surface, and the inner wall of the groove of the rotor lamination sleeved on the positioning rod is attached to the outer wall of the corresponding positioning rod.

[0015] The groove gradually widens from the end away from the rotor lamination shaft to the end near the rotor lamination shaft. The hollow disk is provided with an abutment block. The end of the main rod away from the base extends out of the main shaft. When the locking device fixes the base, the abutment block abuts against the main rod and pushes the main rod to move toward one side of the base.

[0016] By adopting the above technical solution, after the locking device fixes the base, the abutment block can abut against the main rod and push the main rod to move towards the base. At this time, the positioning rod can move towards the main shaft under the action of the second spring, so that the outer wall of the positioning rod is away from the inner wall of the groove, so that the rotor laminations can move better on the positioning shaft, which facilitates the subsequent dispersion device to disperse multiple rotor laminations.

[0017] Preferably, the locking device includes a second driving component, a pushing block, and two clamping blocks. The pushing block is slidably connected to the mounting base along a direction perpendicular to the axis of the hollow disc. The second driving component drives the pushing block to move. The pushing block is used to push the base to slide towards the abutment block. The two clamping blocks are slidably connected to the mounting base along a sliding direction perpendicular to the pushing block. The two clamping blocks are located on both sides of the base and are used to clamp the base. The pushing block is provided with two inclined blocks, which correspond to the two clamping blocks respectively. The distance between the inclined block and the abutment block gradually decreases from the end of the inclined block near the pushing block to the end away from the pushing block. The two clamping blocks are located on the two inclined blocks respectively. The clamping blocks are slidably connected to the corresponding inclined blocks along an inclined direction parallel to the inclined blocks.

[0018] After the two clamping blocks clamp and fix the base, the sliding direction of the pushing block is parallel to the axis of the main shaft, and the abutting block abuts against the main rod and pushes the main rod to move toward one side of the base.

[0019] By adopting the above technical solution, when the pushing block pushes the base to slide toward the abutting block, the two tilting blocks can drive the two clamping blocks to move toward the base until the clamping blocks clamp and fix the four seats, and the abutting block can also abut against the main rod, so that the outer wall of the positioning rod is away from the inner wall of the groove, allowing the rotor lamination to move better on the positioning shaft.

[0020] Preferably, it also includes a connecting rod. The abutment block is movably connected to the hollow disk. The two ends of the connecting rod are respectively fixed to the mounting base and the abutment block. The outer circumferential wall of the abutment block is provided with several limiting rods for limiting the rotor laminations. When the two clamping blocks clamp and fix the base, the several limiting rods abut against several positioning rods and serve as extensions of the corresponding positioning rods. When the rotor laminations are dispersed and moved to the abutment block under the action of the dispersing device, the multiple rotor laminations always maintain the alignment of the grooves.

[0021] By adopting the above technical solution, the connecting rod enables the mounting base and the abutment block to move synchronously. When the base is fixed on the mounting base, the abutment block and the limiting rod can be aligned and abut against the positioning shaft. The abutment block and the limiting rod can be regarded as extensions of the positioning shaft. When the rotor laminations are dispersed under the action of the dispersing device, some rotor laminations can move onto the abutment block and the limiting rod. The abutment block and the limiting rod can increase the dispersion range of the rotor laminations, making the spacing between adjacent rotor laminations larger, thereby further improving the heating effect of the rotor laminations.

[0022] Preferably, the automatic lamination handling device includes a driving component three, a placement table, a transport component, a clamping platform, and two baffles. The clamping platform is rotatably connected to the placement table along a vertical axis. The driving component three drives the clamping platform to rotate. The base is detachably connected to the placement table. When the base is fixed on the placement table, the axis of the main shaft is vertical. The top of the positioning rod is lower than the top of the main shaft. The two baffles are set on the placement table and located on both sides of the positioning shaft. The transport component is used to transport the rotor laminations between the two baffles.

[0023] By adopting the above technical solution, the transport component transports the rotor laminations between the two baffles. The rotor laminations are then fitted onto the main shaft. The rotor laminations fitted onto the main shaft do not directly follow the rotation of the main shaft. At the same time, the positioning shaft rotates. When the positioning rods are aligned with the grooves on the rotor laminations, the rotor laminations can be automatically fitted onto multiple positioning rods.

[0024] Preferably, the dispersing device includes a linkage, a turntable, and a force-applying rod. The turntable is rotatably connected to the housing along a direction parallel to the rotation axis of the hollow disc. Vibration blocks are sequentially fixed on the circumferential outer wall of the turntable. The force-applying rod is mounted on a mounting base. When the hollow disc rotates to a position close to or at a horizontal position, multiple vibration blocks act sequentially on the force-applying rod. The linkage is used to link the turntable and the clamping platform to rotate together.

[0025] By adopting the above technical solution, the clamping platform rotates through the linkage to drive the turntable to rotate. When the hollow disc drives the positioning shaft to rotate to a horizontal state, the vibration block on the turntable can act on the force rod, thereby actuating the force rod to drive the mounting base to vibrate, thereby realizing the dispersion of the rotor laminations on the positioning shaft.

[0026] Preferably, the linkage includes a rotating shaft, a conveyor belt, a first bevel gear, and a second bevel gear. The rotating shaft is rotatably connected to the cover along an axis parallel to the turntable. The conveyor belt is wound around the clamp and the rotating shaft. The first bevel gear is coaxially and fixedly connected to the rotating shaft, and the second bevel gear is coaxially and fixedly connected to the turntable. The first bevel gear is meshed with the second bevel gear.

[0027] By adopting the above technical solution, when the three drive clamps of the drive unit rotate, the rotation of the clamps drives the rotating shaft to rotate through the conveyor belt, and the rotation of the rotating shaft drives the turntable to rotate through the meshing of the first bevel gear and the second bevel gear.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] By setting up a dispersing device to disperse the rotor laminations on the positioning shaft, the heat can be directly applied to each rotor lamination, increasing the heating speed and making the heating of each rotor lamination more uniform, thus improving the uneven heating of rotor laminations at different positions on the positioning shaft.

[0030] By setting up an automatic lamination feeding device, the transport component transports the rotor laminations between two baffles. The rotor laminations are then fitted onto the main shaft. The rotor laminations fitted onto the main shaft do not directly follow the rotation of the main shaft. At the same time, the positioning shaft rotates. When the positioning rods are aligned with the grooves on the rotor laminations, the rotor laminations can be automatically fitted onto multiple positioning rods. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the automatic slice handling device and heating device according to an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the rotor lamination structure according to an embodiment of this application.

[0033] Figure 3 This is a schematic diagram of the structure of the automatic wafer sorting device according to an embodiment of this application.

[0034] Figure 4 This is a cross-sectional view of the positioning axis in an embodiment of this application.

[0035] Figure 5 This is a schematic diagram of the linkage component in an embodiment of this application.

[0036] Figure 6 This is a schematic diagram of the heating device in the state when the base is installed according to an embodiment of this application.

[0037] Figure 7 This is a schematic diagram of the heating device during operation of the dispersion device according to an embodiment of this application.

[0038] Figure 8 It is along Figure 7 A cross-sectional view along line AA in the middle.

[0039] Explanation of reference numerals in the attached drawings: 1. Rotor lamination; 11. Groove; 12. Through groove; 2. Positioning shaft; 21. Main shaft; 211. First groove; 2111. Second spring; 212. Second groove; 2121. First spring; 22. Positioning rod; 221. Second block; 2211. Second inclined surface; 23. Base; 231. Positioning groove; 24. Main rod; 241. First block; 2411. First inclined surface; 3. Automatic lamination sorting device; 31. Drive component three; 311. Gear motor; 32. Placement platform; 33. Transport component; 331. Transport frame; 332. Conveyor belt; 34. Clamping platform; 341. Three-jaw chuck; 35. Baffle; 4. Heating device; 41. Cover; 411. Heating chamber; 41 2. Opening; 42. Hollow disc; 43. Drive component one; 431. Second motor; 432. Matching gear; 433. Gear ring; 44. Hot air blower; 45. Mounting base; 451. Placement slot; 452. Insertion slot; 46. Locking device; 461. Drive component two; 4611. Cylinder; 462. Pushing block; 463. Clamping block; 464. Inclining block; 47. Abutment block; 471. Limiting rod; 472. Movable seat; 473. Side plate; 474. Third spring; 48. Connecting rod; 5. Dispersing device; 51. Linkage component; 511. Rotating shaft; 512. Conveyor belt; 513. First bevel gear; 514. Second bevel gear; 52. Turntable; 521. Vibrating block; 53. Force rod. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0041] This application discloses a hot stacking process for rotor laminations of a large shielded motor.

[0042] Reference Figure 1 The hot lamination process for large shielded motor rotor laminations in this embodiment includes the following steps:

[0043] S1, the automatic lamination device 3 is used to automatically fit and stack multiple rotor laminations 1 on the positioning shaft 2, and the automatic lamination device 3 automatically aligns the grooves 11 of the multiple rotor laminations 1.

[0044] Reference Figure 1 , Figure 2 Multiple slots 11 are evenly provided on the rotor lamination 1 around the axis of the rotor lamination 1. The slots 11 gradually expand from the end away from the axis of the rotor lamination 1 to the end close to the axis of the rotor lamination 1. A through slot 12 communicating with the outside is provided at the end of the slot 11 close to the axis of the rotor lamination 1.

[0045] Reference Figure 3 , Figure 4The positioning shaft 2 is cylindrical, and one end of the positioning shaft 2 is coaxially fixed to a base 23, which has a circular cross-section. The positioning shaft 2 includes a main shaft 21 and multiple positioning rods 22, which correspond to and match multiple slots 11 and through slots 12 on the rotor lamination 1. Multiple first slots 211 are evenly formed on the outer wall of the main shaft 21 along the circumferential direction, and each of the multiple first slots 211 corresponds to a multiple positioning rod 22. The positioning rods 22 are slidably connected to the corresponding first slots 211 along a direction perpendicular to the axis of the main shaft 21. The length direction of the positioning rod 22 is parallel to the axis of the main shaft 21, and the width direction of the positioning rod 22 is parallel to the sliding direction of the positioning rod 22 on the first slot 211. The extension lines of the width direction of the multiple positioning rods 22 all intersect the axis of the main shaft 21.

[0046] Reference Figure 3 , Figure 4 A second groove 212 is coaxially formed at the end of the main shaft 21 furthest from the base 23. The length direction of the second groove 212 is parallel to the axis of the main shaft 21. A main rod 24 is slidably connected within the second groove 212 along its length direction, and the main rod 24 is coaxially arranged with the main shaft 21. Multiple positioning rods 22 surround the main rod 24. A first spring 2121 is provided within the second groove 212, with its two ends fixed to the bottom wall of the second groove 212 and the side of the main rod 24 near the base 23, respectively. Two second springs 2111 are provided within the first groove 211, located at both ends of the length direction of the first groove 211. The two ends of the second springs 2111 are fixedly connected to the side of the positioning rod 22 facing the main rod 24 and the bottom wall of the first groove 211, respectively.

[0047] Reference Figure 3 , Figure 4 A second block 221 is fixed to the side of the positioning rod 22 facing the main rod 24. Multiple first blocks 241 are fixed circumferentially on the outer wall of the main rod 24, each corresponding to a second block 221. A first inclined surface 2411 is formed on the side of the first block 241 facing the corresponding second block 221. A second inclined surface 2211, matching the first inclined surface 2411, is formed on the side of the second block 221 facing the first block 241. The distance from the first inclined surface 2411 to the base 23 gradually increases from the end near the positioning rod 22 to the end furthest from the positioning rod 22. A third groove is formed inside the main shaft 21, connecting the first groove 211 and the second groove 212, allowing the first blocks 241 and 221 to move within the main shaft 21.

[0048] Reference Figure 3 , Figure 4The first spring 2121 is always in a compressed state. When there is no external force, the first block 241 moves to abut against the end wall of the third groove away from the base 23, and the end of the main rod 24 away from the base 23 extends out of the main shaft 21. The second spring 2111 is always in a pulled rope state. When there is no external force, the second block 221 moves towards the main rod 24 until the second inclined surface 2211 on the second block 221 abuts against and adheres to the first inclined surface 2411 on the first block 241. At this time, the positioning rod 22 moves to the position furthest from the main rod 24. When the rotor lamination 1 is sleeved on the positioning shaft 2, the inner wall of the groove 11 of the rotor lamination 1 sleeved on the positioning rod 22 adheres to the outer wall of the corresponding positioning rod 22.

[0049] Reference Figure 1 , Figure 3 The automatic slice handling device 3 includes a drive unit 31, a placement platform 32, a transport unit 33, a clamping platform 34, and two baffles 35. The placement platform 32 is placed on the ground, and the clamping platform 34 is rotatably connected to the top surface of the placement platform 32. The rotation axis of the clamping platform 34 is vertically arranged. The drive unit 31 is a geared motor 311, which is fixed to the inner bottom surface of the placement platform 32. The piston rod of the geared motor 311 extends vertically upward and is coaxially fixed on the clamping platform 34. A three-jaw chuck 341 is fixedly installed on the clamping platform 34 to clamp the base 23. After the three-jaw chuck 341 clamps the base 23, the base 23 and the positioning shaft 2 are coaxially arranged with the output shaft of the geared motor 311.

[0050] Reference Figure 1 , Figure 3 Two baffles 35 are fixed on the placement platform 32, and are positioned opposite the positioning shaft 2, respectively, on both sides of the positioning shaft 2. When the three-jaw chuck 341 clamps the base 23, the top of the baffle 35 is higher than the top of the positioning shaft 2. The transport component 33 is used to transport the rotor lamination 1 between the two baffles 35, and the two baffles 35 are used to limit the rotor lamination 1 transported by the transport component 33, so that the rotor lamination 1 can be fitted onto the positioning shaft 2.

[0051] Reference Figure 1 , Figure 3 The transport component 33 transports the rotor lamination 1 between the two baffles 35. The rotor lamination 1 will first be fitted onto the main shaft 21. The rotor lamination 1 fitted onto the main shaft 21 will not directly follow the main shaft 21 to rotate. At the same time, the positioning shaft 2 rotates. When the positioning rod 22 is aligned with the groove 11 on the rotor lamination 1, the rotor lamination 1 can be automatically fitted onto multiple positioning rods 22.

[0052] Reference Figure 1 , Figure 3The transport component 33 includes a transport frame 331, a first motor, a conveyor belt 332, and two rotating rollers. The transport frame 331 is supported on the ground, and the two rotating rollers are rotatably connected to the transport frame 331. The axes of the rotating rollers are horizontally arranged and parallel to the distance between the two baffles 35. The conveyor belt 332 is wound around the two rotating rollers. The first motor is fixed to the transport frame 331, and the output shaft of the first motor is coaxially fixed to one of the rotating rollers. The transport component 33 is located on one side of the two baffles 35. The operator places the rotor lamination 1 on the conveyor belt 332, which can automatically transport the rotor lamination 1 between the two baffles 35.

[0053] S2, the positioning shaft 2 of the stacked rotor laminations 1 is moved to the heating device 4. The heating device 4 is equipped with a dispersing device 5, which is used to increase the spacing between the multiple rotor laminations 1 on the positioning shaft 2.

[0054] Reference Figure 5 , Figure 6 The heating device 4 includes a drive unit 43, a cover 41 with a heating chamber 411, and a hot air blower 44 disposed within the heating chamber 411. The cover 41 is placed on the ground. A hollow disk 42 is rotatably connected inside the heating chamber 411. The rotation axis of the hollow disk 42 is horizontally oriented. The drive unit 43 drives the hollow disk 42 to rotate. (Refer to...) Figure 7 , Figure 8 A mounting base 45 is movably connected to the hollow disc 42, and a locking device 46 is provided on the mounting base 45 to fix the base 23. When the locking device 46 locks the base 23 onto the mounting base 45, the axial direction of the positioning shaft 2 is perpendicular to the axial direction of the hollow disc 42. When the hollow disc 42 rotates until the positioning shaft 2 is close to or at a horizontal position, the dispersing device 5 drives the mounting base 45 to vibrate. The hot air blower 44 is used to heat the dispersed rotor laminations 1.

[0055] Reference Figure 5 , Figure 6 The drive component 43 includes a second motor 431, a mating gear 432, and a gear ring 433. The gear ring 433 is coaxially sleeved on the hollow disk 42 and is integrally formed with the hollow disk 42. The mating gear 432 is rotatably connected in the heating chamber 411 and meshes with the gear ring 433. The diameter of the mating gear 432 is smaller than the diameter of the gear ring 433. The second motor 431 is fixed on the outer wall of the cover 41. The piston rod of the second motor 431 extends to the heating chamber 411 and is coaxially fixedly connected to the mating gear 432.

[0056] Reference Figure 7 , Figure 8A contact block 47 is movably connected to the hollow disc 42. A connecting rod 48 is mounted on the contact block 47, with both ends of the connecting rod 48 fixedly connected to the mounting base 45 and the contact block 47, respectively. The contact block 47 and the mounting base 45 are positioned opposite each other, located on opposite sides of the hollow portion of the hollow disc 42. When the locking device 46 secures the base 23, the contact block 47 abuts against the main rod 24 and pushes the main rod 24 toward the base 23.

[0057] Reference Figure 4 , Figure 8 After the locking device 46 fixes the base 23, the abutment block 47 can abut against the main rod 24 and push the main rod 24 towards the base 23. At this time, the positioning rod 22 can move towards the main shaft 21 under the action of the second spring 2111, so that the outer wall of the positioning rod 22 is away from the inner wall of the groove 11, so that the rotor lamination 1 can move more smoothly on the positioning shaft 2, which facilitates the subsequent dispersion device 5 to disperse multiple rotor laminations 1. Then the driving component 43 drives the hollow disk 42 to rotate, so that the axial direction of the positioning shaft 2 is close to the horizontal state. Then the dispersion device 5 drives the mounting base 45 to vibrate, so that multiple rotor laminations 1 on the positioning shaft 2 can be dispersed. Then the heat blown by the hot air blower 44 can directly act on each rotor lamination 1, without transferring heat through the contact between adjacent rotor laminations 1, which can improve the heating speed and make the heating of each rotor lamination 1 more uniform, improving the uneven heating of rotor laminations 1 at different positions on the positioning shaft 2.

[0058] Reference Figure 6 The mounting base 45 has a placement groove 451 on its side facing the abutment block 47 for the base 23 to be accommodated. A insertion groove 452 communicating with the outside is formed on the side wall of the placement groove 451. The end of the insertion groove 452 near the abutment block 47 passes through the mounting base 45. The bottom wall of the insertion groove 452 is closer to the abutment block 47 than the bottom wall of the placement groove 451. When the hollow disc 42 rotates until the opening of the placement groove 451 is vertically upward, the operator can insert the base 23 into the placement groove 452 and place it inside. Throughout this process, the positioning shaft 2 can be prevented from contacting the abutment block 47.

[0059] Reference Figure 7 , Figure 8The locking device 46 includes a second driving member 461, a pushing block 462, and two clamping blocks 463. The pushing block 462 is slidably connected to the mounting base 45 along a direction perpendicular to the axis of the hollow disk 42. The second driving member 461 drives the pushing block 462 to move. The second driving member 461 is a cylinder 4611, which is fixed inside the mounting base 45. The piston rod of the cylinder 4611 extends out along a sliding direction parallel to the pushing block 462 and is fixed to the pushing block 462. The extension line of the piston rod of the cylinder 4611 intersects the axis of the hollow disk 42 at a point. The pushing block 462 can extend into the placement groove 451 and is used to push the base 23 to slide towards the abutment block 47.

[0060] Reference Figure 7 , Figure 8 Two clamping blocks 463 are slidably connected to the mounting base 45 along a sliding direction perpendicular to the pushing block 462. The two clamping blocks 463 are located on both sides of the base 23 and can extend into the placement groove 451 to clamp the base 23. Two inclined blocks 464 are fixed on the pushing block 462. One end of the inclined block 464 is fixed to the pushing block 462. The two inclined blocks 464 are located on both sides of the pushing block 462 and correspond to the two clamping blocks 463. The distance between the inclined block 464 and the abutment block 47 gradually decreases from the end of the inclined block 464 closest to the pushing block 462 to the end furthest from the pushing block 462. The two clamping blocks 463 are located on the two inclined blocks 464 and are slidably connected to the corresponding inclined blocks 464 along an inclined direction parallel to the inclined blocks 464.

[0061] Reference Figure 7 , Figure 8 When the piston rod of cylinder 4611 extends, the pushing block 462 pushes the base 23 toward the abutting block 47. At the same time, the two clamping blocks 463 move toward the base 23 under the action of the tilting block 464 until they clamp the base 23. During this process, the main rod 24 can move with the base 23 toward the abutting block 47 until it abuts against the abutting block 47. After the main rod 24 abuts against the abutting block 47, the pushing block 462 continues to push the base 23 toward the abutting block 47. Since the main rod 24 has no room to move after being abutted by the abutting block 47, it can only move toward the first spring 2121. The first block 241 moves with the main rod 24 toward the first spring 2121 and moves away from the second block 221. The positioning rod 22 moves toward the main rod 24 under the action of the second spring 2111, so that the outer wall of the positioning rod 22 moves away from the inner wall of the groove 11, allowing the rotor lamination 1 to move better on the positioning shaft 2.

[0062] Reference Figure 3 , Figure 6A positioning groove 231 is provided on the outer wall of the base 23. The length direction of the positioning groove 231 is parallel to the axis of the main shaft 21 and the positioning groove 231 passes through the base 23. A positioning block matching the positioning groove 231 is fixed on the side wall of the placement groove 451 away from the insertion groove 452. When the base 23 is placed in the placement groove 451, the positioning block extends into the positioning groove 231 and can slide on the positioning groove 231.

[0063] Reference Figure 7 , Figure 8 The outer circumferential wall of the abutment block 47 is uniformly fixed with several limiting rods 471 for limiting the rotor laminations 1. After the two clamping blocks 463 clamp and fix the base 23, the positioning block and the positioning groove 231 are used to position the main shaft 21 and the positioning rod 22, so that when the main shaft 21 abuts against the abutment block 47, the abutment block 47 can serve as an extension of the main shaft 21, and the several limiting rods 471 can abut against the several positioning rods 22 respectively and serve as extensions of the corresponding positioning rods 22. When the rotor laminations 1 are dispersed and moved to the abutment block 47 under the action of the dispersing device 5, the multiple rotor laminations 1 always maintain the alignment of the grooves 11.

[0064] Reference Figure 7 , Figure 8 The connecting rod 48 enables the mounting base 45 and the abutment block 47 to move synchronously. When the base 23 is fixed on the mounting base 45, the abutment block 47 and the limiting rod 471 can be aligned and abut against the positioning shaft 2. The abutment block 47 and the limiting rod 471 can be regarded as extensions of the positioning shaft 2. When the rotor laminations 1 are dispersed under the action of the dispersing device 5, some rotor laminations 1 can move onto the abutment block 47 and the limiting rod 471. The abutment block 47 and the limiting rod 471 can increase the dispersion range of the rotor laminations 1, making the distance between adjacent rotor laminations 1 larger, thereby further improving the heating effect of the rotor laminations 1.

[0065] Reference Figure 6 , Figure 7 The hot air blower 44 is fixedly embedded inside the cover 41. When the positioning shaft 2 rotates to a near-horizontal state, the hot air blower 44 is directly facing the positioning shaft 2 and the abutment block 47, and the hot air blower 44 can heat multiple rotor laminations 1. After heating is completed, the hollow disk 42 rotates to make the positioning shaft 2 return to a vertical state. At this time, the multiple rotor laminations 1 will be stacked together again under the action of gravity, and the stacked rotor laminations 1 can have a certain heat preservation effect.

[0066] Reference Figure 1 , Figure 6An opening 412 communicating with the heating chamber 411 is provided on the outer wall of the cover 41. The opening 412 allows the base 23 and the positioning shaft 2 to enter the heating chamber 411 from the outside of the cover 41. The operator uses a robotic arm to clamp the base 23 and moves the positioning shaft 2, which is fitted with the rotor lamination 1 by the automatic lamination sorting device 3, onto the mounting base 45. After the rotor lamination 1 is heated, the robotic arm is used to clamp the base 23 out from the opening 412.

[0067] Reference Figure 6 , Figure 7 The mounting base 45 is rotatably connected to the hollow disk 42, and the rotation axis of the mounting base 45 is parallel to the axis of the hollow disk 42. A movable seat 472 is fixed to the end of the abutment block 47 furthest from the mounting base 45, and the abutment block 47 is movably connected to the hollow disk 42 via the movable seat 472. The movable seat 472 is slidably connected to the hollow disk 42 along an arc path, with the mounting base 45 as the rotation fulcrum. A side plate 473 is fixed to the hollow disk 42, located on one side of the movable seat 472. A third spring 474 is fixed to the side plate 473, with its two ends fixedly connected to the side plate 473 and the movable seat 472, respectively. When no external force is applied, the positioning shaft 2 always intersects the axis of the hollow disk 42.

[0068] Reference Figure 5 , Figure 7 The dispersing device 5 includes a linkage 51, a turntable 52, and a force-applying rod 53. The turntable 52 is rotatably connected inside the cover 41 along a direction parallel to the rotation axis of the hollow disc 42. Vibration blocks 521 are sequentially fixed on the circumferential outer wall of the turntable 52. The force-applying rod 53 is fixed on the side of the movable seat 472 away from the installation location and is connected to the mounting base 45 via the movable seat 472. When the hollow disc 42 rotates until the positioning shaft 2 is close to or at a horizontal position, the multiple vibration blocks 521 act sequentially on the force-applying rod 53, pressing the force-applying rod 53 back and forth, causing the positioning shaft 2 to tilt. Through vibration and the tilting of the positioning shaft 2, the multiple stator laminations are dispersed. The linkage 51 is used to link the turntable 52 and the clamping platform 34 to rotate together.

[0069] Reference Figure 5 , Figure 7The linkage 51 includes a rotating shaft 511, a conveyor belt 512, a first bevel gear 513, and a second bevel gear 514. The rotating shaft 511 is rotatably connected to the cover 41 along an axis parallel to the turntable 52. The conveyor belt 512 is wound around the output shaft of the reduction motor 311 and the rotating shaft 511. The first bevel gear 513 is coaxially and fixedly connected to the rotating shaft 511, and the second bevel gear 514 is coaxially and fixedly connected to the turntable 52. The first bevel gear 513 meshes with the second bevel gear 514. When the reduction motor 311 drives the clamping platform 34 to rotate, the rotation of the clamping platform 34 drives the rotating shaft 511 to rotate via the conveyor belt 512. The rotation of the rotating shaft 511 drives the turntable 52 to rotate via the meshing of the first bevel gear 513 and the second bevel gear 514.

[0070] S3, the heated rotor laminations 1 are stacked together again, and then a hydraulic press is used to press the stacked rotor laminations 1 together, maintaining pressure until the rotor laminations 1 cool to room temperature, finally forming the rotor core. 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 according to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A process for hot stamping of large shielded motor rotor laminations, characterized by: The method comprises the following steps: S1, using an automatic sheet arranging device (3) to automatically arrange and stack a plurality of rotor sheets (1) on a positioning shaft (2), and the automatic sheet arranging device (3) automatically aligns the wire slots (11) of the plurality of rotor sheets (1); S2, moving the positioning shaft (2) with the stacked rotor sheets (1) to a heating device (4), and the heating device (4) is provided with a dispersing device (5) for increasing the spacing between the plurality of rotor sheets (1) on the positioning shaft (2); S3, re-stacking the heated rotor sheets (1), and then using a hydraulic press to compress the stacked rotor sheets (1), maintaining the pressure until the temperature of the rotor sheets (1) cools to room temperature, and finally forming a rotor core; The heating device (4) comprises a driving member (43), a cover (41) with a heating cavity (411), and a hot air blower (44) arranged in the heating cavity (411), the heating cavity (411) is rotatably connected with a hollow disc (42), the driving member (43) drives the hollow disc (42) to rotate, the rotation axis direction of the hollow disc (42) is horizontally arranged, the mounting seat (45) is movably connected to the hollow disc (42), one end of the positioning shaft (2) is provided with a base (23), the mounting seat (45) is provided with a locking device (46) for fixing the base (23), the axis direction of the positioning shaft (2) is perpendicular to the axis direction of the hollow disc (42), and the dispersing device (5) is used to drive the mounting seat (45) to vibrate when the hollow disc (42) rotates to the position where the positioning shaft (2) is close to or in the horizontal state.

2. The large shielded motor rotor lamination hot coining process of claim 1, wherein: The positioning shaft (2) comprises a main shaft (21) and a plurality of positioning rods (22) corresponding to a plurality of wire slots (11) on the rotor lamination (1), the positioning rods (22) are slidingly connected to the main shaft (21) in the direction perpendicular to the axis of the main shaft (21), the main shaft (21) is slidingly connected with a main rod (24) in the axial direction of the main shaft (21), the plurality of positioning rods (22) surround the main rod (24), a plurality of first blocks (241) are arranged on the outer wall of the main rod (24), a second block (221) is arranged on the side of the positioning rod (22) facing the main rod (24), the plurality of first blocks (241) correspond to the plurality of second blocks (221) respectively, a first inclined surface (2411) is arranged on the side of the first block (241) facing the corresponding second block (221), a second inclined surface (2211) matching the first inclined surface (2411) is arranged on the side of the second block (221) facing the first block (241), the distance between the first inclined surface (2411) close to one end of the positioning rod (22) and the base (23) gradually increases from the end far away from the positioning rod (22), a first spring (2121) is arranged on the main rod (24), the first spring (2121) drives the main rod (24) to move away from the base (23), a second spring (2111) is arranged on the positioning rod (22), the second spring (2111) drives the positioning rod (22) to always move towards the main rod (24), when no external force acts on the main rod (24) and the positioning rod (22), the first inclined surface (2411) is fitted on the corresponding second inclined surface (2211), and the inner wall of the wire slot (11) of the rotor lamination (1) fitted on the positioning rod (22) is fitted on the outer wall of the corresponding positioning rod (22); The wire slot (11) gradually expands from the end far away from the axis of the rotor lamination (1) to the end close to the axis of the rotor lamination (1), the hollow disc (42) is provided with an abutting block (47), the end of the main rod (24) far away from the base (23) extends out of the main shaft (21), when the locking device (46) fixes the base (23), the abutting block (47) abuts on the main rod (24) and drives the main rod (24) to move towards the base (23).

3. The large shielded motor rotor lamination hot coining process of claim 2, wherein: The locking device (46) comprises a driving member two (461), a pushing block (462) and two clamping blocks (463), the pushing block (462) is slidingly connected on the mounting seat (45) in the direction perpendicular to the axis of the hollow disc (42), the driving member two (461) drives the pushing block (462) to move, the pushing block (462) is used to push the base (23) to slide towards the side of the abutting block (47), the two clamping blocks (463) are slidingly connected on the mounting seat (45) in the direction perpendicular to the sliding direction of the pushing block (462), the two clamping blocks (463) are respectively located on the two sides of the base (23) and are used to clamp the base (23), two inclined blocks (464) are arranged on the pushing block (462), the two inclined blocks (464) correspond to the two clamping blocks (463) respectively, the distance between the end of the inclined block (464) close to the pushing block (462) and the end of the inclined block (464) away from the pushing block (462) gradually decreases to the abutting block (47), the two clamping blocks (463) are respectively located on the two inclined blocks (464), the clamping block (463) is slidingly connected on the corresponding inclined block (464) in the inclined direction parallel to the inclined block (464). When the two clamping blocks (463) clamp and fix the base (23), the sliding direction of the pushing block (462) is parallel to the axis direction of the main shaft (21), the abutting block (47) abuts on the main rod (24) and pushes the main rod (24) to move towards the side of the base (23).

4. The large shielded motor rotor lamination hot coining process of claim 3, wherein: Further comprising a connecting rod (48), the abutting block (47) is movably connected on the hollow disc (42), the two ends of the connecting rod (48) are respectively fixed on the mounting seat (45) and the abutting block (47), a plurality of limiting rods (471) for limiting the rotor lamination (1) are arranged on the circumferential outer wall of the abutting block (47), when the two clamping blocks (463) clamp and fix the base (23), the plurality of limiting rods (471) abut on the plurality of positioning rods (22) and serve as the extension of the corresponding positioning rod (22), when the rotor lamination (1) moves to the abutting block (47) under the action of the dispersing device (5), the plurality of rotor laminations (1) always keep the linear slot (11) aligned state.

5. The large shielded motor rotor lamination hot coining process of claim 2 wherein: The automatic sheet handling device (3) comprises a driving member three (31), a placing table (32), a conveying member (33), a clamping table (34) and two baffles (35), the clamping table (34) is rotationally connected on the placing table (32) along the vertical axis direction, the driving member three (31) drives the clamping table (34) to rotate, the base (23) is detachably connected on the placing table (32), when the base (23) is fixed on the placing table (32), the axis direction of the main shaft (21) is vertically arranged, the top end of the positioning rod (22) is lower than the top end of the main shaft (21), the two baffles (35) are arranged on the placing table (32) and are respectively located on the two sides of the positioning shaft (2), the conveying member (33) is used to convey the rotor lamination (1) to the two baffles (35).

6. The large shielded motor rotor lamination hot coining process of claim 5 wherein: The dispersing device (5) comprises a linkage (51), a rotating disc (52) and a force applying rod (53), the rotating disc (52) is rotationally connected in the cover body (41) along the direction parallel to the rotating axis of the hollow disc (42), a plurality of vibration blocks (521) are sequentially fixed on the circumferential outer wall of the rotating disc (52), the force applying rod (53) is arranged on the mounting base (45), when the hollow disc (42) rotates to the state that the positioning shaft (2) is close to or in the horizontal state, the plurality of vibration blocks (521) sequentially act on the force applying rod (53), the linkage (51) is used for linkage rotating of the rotating disc (52) and the clamping table (34).

7. The large shielded motor rotor lamination hot coining process of claim 6 wherein: The linkage (51) comprises a rotating shaft (511), a conveying belt (512), a first bevel gear (513) and a second bevel gear (514), the rotating shaft (511) is rotationally connected on the cover body (41) along the direction parallel to the axis of the rotating disc (52), the conveying belt (512) is wound on the clamping table (34) and the rotating shaft (511), the first bevel gear (513) is coaxially fixedly connected on the rotating shaft (511), the second bevel gear (514) is coaxially fixedly connected on the rotating disc (52), and the first bevel gear (513) is meshingly connected on the second bevel gear (514).

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