Rotor core insert magnet steel apparatus and method

Abstract

This invention belongs to the technical field of magnet installation, specifically relating to a device and method for inserting magnets into a rotor core. The device includes a workbench, a magnet insertion device, and a core transfer device. The core transfer device includes a base, a positioning mechanism, and a dropping switch plate. The dropping switch plate has dropping slots corresponding to the magnet slots of the rotor core. The sliding stroke of the positioning mechanism has loading / unloading stations and inspection stations. The workbench has a receiving mechanism corresponding to the loading / unloading stations. When the magnet assembly is unqualified, the positioning mechanism drives the rotor core from the inspection station back to the loading / unloading station so that the magnet can fall into the receiving mechanism. This invention integrates insertion, inspection, removal of unqualified magnets, and re-insertion into the same device, reducing equipment investment costs and floor space. It also avoids the rotor core from re-mechanically contacting and sliding relative to the positioning structure during rework, eliminating irreversible structural damage.

Description

Technical Field

[0001] This invention belongs to the technical field of magnet installation, specifically relating to a device and method for inserting magnets into a rotor core. Background Technology

[0002] The rotor core is a core component of a permanent magnet motor. During its manufacturing process, magnets need to be accurately inserted into the magnet slots within the rotor core. Traditional assembly methods typically involve manual insertion, which is inefficient and results in poor product consistency. To achieve automated assembly, Chinese invention patent application CN108616202A discloses an automatic magnet installation device. This device includes a support, a turntable, a magnet clamping mechanism, a magnet guiding mechanism, a magnet positioning mechanism, and a magnet error-proofing mechanism. The turntable is rotatably supported on the support and has multiple workstations evenly distributed around the same circumference centered on the turntable's rotation axis. The magnet clamping mechanism and the magnet guiding mechanism are mounted on the free end of a robotic arm. The magnet clamping mechanism includes a magnet gripper. In use, the rotor core to be processed is rotated to a position below the magnet error-proofing mechanism. The magnet clamping mechanism then clamps the magnet and inserts it into the magnet error-proofing mechanism, allowing the magnet to enter the rotor core.

[0003] In actual production, after the magnets are inserted into the rotor core, visual inspection and other means are usually used to determine whether the insertion is qualified. Once unqualified conditions such as axial or radial offset, angular deviation, or magnet damage are detected, the conventional practice of existing equipment is to remove the unqualified rotor core from the current insertion production line, transfer it to a special location for magnet removal, and then move it back to the insertion production line and reposition it for secondary insertion.

[0004] The drawback of this conventional method is that, in the event of a defect, the rotor core must undergo at least two additional repositioning processes before removing the magnets and before reassembling. Whether using clamps or centering pins, each repositioning inevitably leads to mechanical contact and relative sliding between the end faces or inner edges of the silicon steel sheets that make up the rotor core and the positioning structure. The friction and impact caused by this repositioning can easily lead to warping, burrs, or interlayer misalignment at the edges of the laminates, resulting in irreversible structural damage. Simultaneously, repositioning is required when removing the magnets. If the concentricity of the repositioned magnets deviates from that of the initial assembly, the disassembly thrust can easily generate uneven loads, causing the magnets to experience non-uniform stress within the magnet slots and increasing the risk of breakage. Summary of the Invention

[0005] This invention provides a device and method for inserting magnets into rotor cores, in order to solve the technical problem in the prior art where substandard rotor cores are easily damaged due to the need for repeated repositioning and installation.

[0006] To solve the above problems, the rotor core magnet insertion equipment provided by the present invention adopts the following technical solution: a rotor core magnet insertion equipment, including a workbench, a magnet insertion device disposed on the workbench, and a core transfer device; The iron core transfer device includes a base, a positioning mechanism slidably mounted on the base for positioning the rotor iron core, and a material dropping switch plate. The material dropping switch plate is rotatably mounted on the positioning mechanism around an upwardly extending axis and fits against the bottom of the rotor iron core to prevent the magnets from falling off. The material dropping switch plate has material dropping slots that correspond one-to-one with the magnet slots of the rotor iron core. The base and the positioning mechanism have material dropping channels that correspond vertically to the material dropping slots. The rotation stroke of the material dropping switch plate has a blocking position where the material dropping slots and magnet slots are staggered to prevent the magnets from falling off, and a material dropping position where the material dropping slots and magnet slots are directly opposite each other. The sliding stroke of the positioning mechanism has a loading / unloading station and a testing station. The worktable is equipped with a receiving mechanism corresponding to the loading / unloading station to receive the magnets falling from the discharge chute. When inserting the magnet, the positioning mechanism moves to the loading / unloading station and the discharge switch plate rotates to the blocking position. During testing, the positioning mechanism moves to the testing station. If the magnet assembly is not qualified, the positioning mechanism drives the rotor core to return from the testing station to the loading / unloading station, and the discharge switch plate rotates to the discharge position so that the magnet can fall into the receiving mechanism.

[0007] The beneficial effects of this solution are as follows: the material discharge switch plate is located at the bottom of the rotor core. During the insertion process, placing the material discharge switch plate in the shielding position can support the bottom of the magnet and prevent the magnet from falling from the bottom of the magnet slot during insertion, thus ensuring the reliability of the insertion operation. When removing the magnet, placing the material discharge switch plate in the material discharge position opens the channel for the magnet to fall downwards. The rotor core magnet insertion equipment of this invention integrates insertion, inspection, removal of defective magnets, and reinsertion into a single device, eliminating the need for a separate disassembly line. This avoids the additional investment required by setting up dedicated disassembly stations or lines in existing technologies, reducing equipment investment costs and floor space requirements. It is particularly suitable for space-constrained production workshops or small and medium-sized manufacturing enterprises. Furthermore, when a defect is detected, the positioning mechanism directly drives the rotor core from the inspection station back to the loading / unloading station, without removing the rotor core from the equipment. This prevents the rotor core from re-mechanically contacting and sliding with the positioning structure during rework due to removal and repositioning, thus eliminating irreversible structural damage such as edge warping, burrs, or interlayer misalignment of silicon steel sheets caused by repeated repositioning, ensuring the structural integrity of the rotor core.

[0008] Furthermore, a force-bearing arm is protruding from the horizontal side of the material feeding switch plate; The base is provided with a switch plate drive mechanism corresponding to the loading and unloading station. The switch plate drive mechanism is used to drive the force arm to drive the material dropping switch plate to rotate to the blocking position or the material dropping position.

[0009] The beneficial effect of this solution is that by setting the drive mechanism on the base, the drive mechanism will not slide along with the positioning mechanism during the sliding process, thus reducing the overall load of the sliding component.

[0010] Furthermore, the switch plate drive mechanism includes a switch block that is rotatably arranged about a vertical axis. The switch block has two drive arms that are symmetrically arranged, and the drive arms are used to push the force-bearing arm to rotate.

[0011] The beneficial effects of this solution are as follows: By cooperating with the force-bearing arm on the material dropping switch plate through two symmetrically arranged drive arms on the switch block, when the switch block rotates forward, one drive arm pushes the force-bearing arm to rotate the material dropping switch plate to the blocking position; when the switch block rotates in reverse, the other drive arm pushes the force-bearing arm to rotate the material dropping switch plate to the material dropping position, thus realizing bidirectional switching of the material dropping switch plate between the blocking position and the material dropping position; the drive mechanism is simple and compact, and the position switching of the material dropping switch plate can be realized without a complex transmission mechanism, ensuring that the material dropping switch plate can be accurately positioned in both insertion and disassembly conditions.

[0012] Furthermore, the base is provided with a guide plate located above the positioning mechanism. The guide plate and the receiving mechanism are arranged vertically opposite each other. The guide plate is provided with guide slots that correspond one-to-one with the magnet slots in the rotor core.

[0013] The beneficial effects of this solution are: the guide slots on the guide plate correspond one-to-one with the magnet slots of the rotor core, providing precise guidance for the magnets during insertion and ensuring that the magnets enter the magnet slots of the rotor core at the correct position and angle, thereby improving insertion accuracy and product qualification rate.

[0014] Furthermore, the receiving mechanism includes a receiving box for receiving magnets, one end of which extends downward at an angle to the outside of the base to guide the magnets to the outside of the base. The receiving mechanism also includes a vibratory plate mounted on the workbench for receiving magnets that fall from the receiving box.

[0015] The beneficial effects of this solution are: one end of the receiving box extends downwards to the outside of the base, allowing the magnets falling from the material discharge channel to slide into the vibratory plate outside the base; the vibratory plate disperses the falling magnets, preventing them from piling up together, making it easier for the magnet insertion device to pick them up again and reinsert them, thus realizing the in-situ recovery and recycling of the magnets.

[0016] Furthermore, the positioning mechanism includes a transfer plate and a rotating seat located in the middle of the transfer plate, and the material dropping switch plate is rotatably mounted on the outside of the rotating seat.

[0017] Furthermore, a receiving groove is provided at the top center of the material feeding switch plate, and the rotating seat passes through the receiving groove; The positioning mechanism further includes a core support plate disposed in the receiving groove, and the core support plate is fixedly installed in the rotating seat; the core support plate has a plurality of positioning arms evenly distributed along the circumference, and the positioning arms are provided with positioning holes for positioning pins to pass through, and the positioning pins are used to pass through the positioning process holes of the rotor core.

[0018] The beneficial effects of this solution are: the material feeding switch plate has a receiving groove, which allows the iron core support plate to be embedded in the material feeding switch plate, thereby ensuring that the material feeding switch plate and the rotor iron core can fit together, thus achieving the shielding and anti-detachment of the magnet.

[0019] Furthermore, the positioning mechanism also includes a funnel, with slots on opposite sides of the top of the funnel for the transfer plate to pass through; the material discharge switch plate is located inside the funnel and is fixedly connected to the funnel.

[0020] The beneficial effects of this solution are as follows: the funnel is located below the material discharge switch plate. When the material discharge switch plate rotates to the material discharge position, the magnets falling from the rotor core magnet slot enter the funnel through the material discharge slot of the material discharge switch plate and are guided by the funnel to the receiving mechanism below. The material discharge switch plate is fixedly connected to the funnel and the transfer plate is clamped in the middle, realizing the relative fixation of the material discharge switch plate, the funnel, and the transfer plate in the vertical direction.

[0021] Furthermore, the magnet insertion device includes a collaborative robot and an insertion mechanism located at the execution end of the collaborative robot, the insertion mechanism including a clamping component for clamping the magnet.

[0022] To solve the above problems, the rotor core magnet insertion method provided by the present invention adopts the following technical solution: A method for inserting magnets into a rotor core, using the aforementioned rotor core magnet insertion equipment, includes the following steps: S1, place the rotor core on the positioning mechanism, place the material discharge switch plate in the blocking position, move the positioning mechanism to the loading and unloading station, and insert the magnet into the rotor core using the magnet insertion device. S2, the positioning mechanism moves to the inspection station. If the rotor core passes the inspection, the rotor core is transferred to the next station or removed. If the rotor core fails the inspection, the positioning mechanism moves back to the loading and unloading station, the material dropping switch is placed in the material dropping position, and the magnets on the rotor core fall into the receiving mechanism through the material dropping chute and material dropping channel. S3, put the material dropping switch plate back into the blocked position, and the magnet insertion device inserts the magnet into the rotor core after the magnet has fallen.

[0023] The beneficial effects of this solution are: during the insertion process, placing the material discharge switch plate in the shielding position can support the bottom of the magnet and prevent the magnet from falling from the bottom of the magnet slot during insertion, thus ensuring the reliability of the insertion operation; when removing the magnet, placing the material discharge switch plate in the material discharge position opens the channel for the magnet to fall downwards, allowing the magnet to fall downwards. In this invention, insertion, testing, removal of defective magnets, and reinsertion are integrated into the same equipment, eliminating the need for a separate disassembly production line. This avoids the additional investment required by setting up dedicated disassembly stations or production lines in existing technologies, reducing equipment investment costs and floor space requirements. It is particularly suitable for space-constrained production workshops or small and medium-sized manufacturing enterprises. Furthermore, when a defect is detected, the positioning mechanism directly drives the rotor core from the testing station back to the loading / unloading station, without removing the rotor core from the equipment. This prevents the rotor core from re-mechanically contacting and sliding with the positioning structure during rework due to removal and repositioning, thus eliminating irreversible structural damage such as edge warping, burrs, or interlayer misalignment of the silicon steel sheets caused by repeated repositioning, ensuring the structural integrity of the rotor core. Attached Figure Description

[0024] Figure 1 A schematic diagram of a device for inserting magnets into a rotor core; Figure 2 This is a schematic diagram of the insertion mechanism; Figure 3 This is a structural diagram of the iron core transfer device, the receiving mechanism, and the guide plate; Figure 4 This is a schematic diagram of the iron core transfer device; Figure 5 This is a schematic diagram of the positioning mechanism, the material dropping switch plate, and the funnel in the iron core transfer device; Figure 6 This is a structural diagram of the material feeding switch plate, the iron core support plate, the center positioning block, and the rotor iron core.

[0025] Explanation of reference numerals in the attached figures: 100. Workbench; 200. Magnet insertion device; 201. Collaborative robot; 202. Robot connector; 203. Rotary cylinder one; 204. Electric gripper; 205. Gripper finger; 206. Gripper mounting plate; 300. Iron core transfer device; 301. Discharge switch plate; 302. Funnel; 303. Support base; 304. Linear slide rail; 305. Transfer plate; 306. Rotary seat; 307. Iron core support plate; 308. Center positioning block; 309. Positioning column; 310. Transfer plate discharge groove; 311. Positioning arm; 312. Positioning column through hole; 313. Rotary seat through hole; 314. Switch plate discharge groove; 315. Receiving groove; 316. Force arm; 317. Transfer plate through groove; 318. Insert block; 319. Bolt through hole; 320. Threaded hole; 321. Rodless cylinder; 322. Rotary cylinder II; 323. Switch block; 324. Drive arm; 400. Guide plate; 401. Support rod; 402. Guide slot; 501. Receiving box; 502. Vibratory feeder; 600, Rotor core; 601, Positioning process hole; 602, Magnet slot; 700. Magnet steel. Detailed Implementation

[0026] Embodiments of the rotor core magnet insertion device provided by the present invention: like Figures 1 to 6 As shown, the rotor core magnet insertion equipment includes a workbench 100, a magnet insertion device 200, a core transfer device 300, a guide plate 400, and a receiving mechanism; the magnet insertion device 200, the core transfer device 300, and the receiving mechanism are all installed on the workbench 100.

[0027] The magnet insertion device 200 includes a collaborative robot 201 and an insertion mechanism. The collaborative robot 201 is mounted on the workbench 100, and the insertion mechanism is mounted on the execution end of the collaborative robot 201, which is capable of inserting the magnet 700 into the magnet slot 602 of the rotor core 600.

[0028] The insertion mechanism includes a robot connector 202, a rotary cylinder 203, and a gripping component. The gripping component includes an electric gripper 204 and gripper fingers 205. The robot connector 202 is fixedly mounted on the execution end of the collaborative robot 201. The rotary cylinder 203 is fixedly mounted on the robot connector 202 and has an output end that rotates about a horizontal axis. The electric gripper 204 is fixedly mounted on the output end of the rotary cylinder 203 via a gripper mounting plate 206, and the rotary cylinder 203 can drive the electric gripper 204 to rotate. There are two gripper fingers 205, which are fixedly mounted on the output end of the electric gripper 204. The electric gripper 204 can drive the two gripper fingers 205 to move relative to each other, thereby gripping or releasing the magnet 700.

[0029] The function of the iron core transfer device 300 is to position the rotor iron core 600 and drive the rotor iron core 600 to move. The iron core transfer device 300 includes a base, a positioning mechanism, a material dropping switch plate 301, a transfer drive mechanism, a switch plate drive mechanism, and a funnel 302. The positioning mechanism, the material dropping switch plate 301, the transfer drive mechanism, and the switch plate drive mechanism are all installed on the base.

[0030] The base includes two spaced-apart support seats 303 and a linear guide rail 304 arranged on one of the support seats. For ease of description, the spaced-apart arrangement of the two support seats 303 is defined as the front-back direction, and the support seats 303 extend as a whole in the left-right direction. It should be noted that "front-back" and "left-right" are only relative concepts and do not limit the structure. Since the two support seats 303 are spaced apart, the gap between the two support seats 303 allows the magnet 700 to fall downwards, thus forming a material drop channel for the base.

[0031] The positioning mechanism includes a transfer plate 305, a rotating seat 306, an iron core support plate 307, a central positioning block 308, and a positioning column 309. The transfer plate 305 is a rectangular plate with one end slidably mounted on a linear slide rail 304. A transfer plate drop groove 310 is provided on the transfer plate 305, which constitutes the drop channel of the positioning mechanism. The transfer plate 305 will not interfere with the downward fall of the magnet 700.

[0032] The rotating base 306 is fixedly installed in the middle of the transfer plate 305, and its overall shape is cylindrical, extending upward from the transfer plate 305. The bottom of the core support plate 307 is fixedly installed on the top of the rotating base 306. The core support plate 307 has multiple positioning arms 311 evenly distributed along the circumference of the rotating base 306. Each positioning arm 311 is provided with a positioning post through hole 312. Here, there are 8 positioning arms 311. In use, the positioning post 309 passes through the positioning process hole 601 and the positioning post through hole 312 of the rotor core 600, thereby restricting the position of the rotor core 600.

[0033] The center positioning block 308 is fixedly installed at the center of the iron core support plate 307. The center positioning block 308 is cylindrical and extends upward from the iron core support plate 307. The center positioning block 308 is coaxially arranged with the rotating seat 306. The center positioning block 308 is used to fit the rotor iron core 600 and prevent the rotor iron core 600 from moving radially.

[0034] In this embodiment, the installation method between the transfer plate 305 and the rotating seat 306, and between the rotating seat 306 and the iron core support plate 307, can both be achieved by bolt connection.

[0035] The material feeding switch plate 301 is located above the transfer plate 305. It is circular in shape with a central rotating seat through-hole 313. The size of the rotating seat through-hole 313 is adapted to the rotating seat 306. This adaptation means that after the material feeding switch plate 301 is fitted onto the rotating seat 306, it will not move radially along the rotating seat 306, and the material feeding switch plate 301 can rotate relative to the rotating seat 306. In a preferred embodiment, the thickness of the material feeding switch plate 301 is the same as the axial dimension of the rotating seat 306. When the material feeding switch plate 301 is fitted onto the rotating seat 306, the top surface of the rotating seat 306 is flush with the top surface of the material feeding switch plate 301. In other embodiments, the thickness of the material feeding switch plate 301 may be less than the axial dimension of the rotating seat 306.

[0036] The material feeding switch plate 301 has multiple material feeding slots 314. The number and distribution of the material feeding slots 314 are the same as the number and distribution of the magnet slots 602 on the rotor core 600, and they correspond one-to-one. When the material feeding slots 314 on the material feeding switch plate 301 are aligned with the magnet slots 602 on the rotor core 600, the magnets 700 can fall downwards from the material feeding slots 314 after being subjected to force. A receiving slot 315 is provided at the top center of the material feeding switch plate 301. In a preferred embodiment, the depth of the receiving slot 315 in the vertical direction is equal to the thickness of the core support plate 307. After the core support plate 307 is placed in the receiving slot 315, the top surface of the core support plate 307 is flush with the top surface of the material feeding switch plate 301. In other embodiments, the depth of the receiving slot 315 can be greater than the thickness of the core support plate 307.

[0037] The material feeding switch plate 301 has a force arm 316 on one side, which extends to the support base 303. By driving the force arm 316, the material feeding switch plate 301 can be rotated.

[0038] The funnel 302 is located below the transfer plate 305. The top of the funnel 302 has transfer plate slots 317 on opposite sides, allowing the transfer plate 305 and the force-bearing arm 316 of the material discharge switch plate 301 to be inserted. An insert block 318 is provided within the transfer plate slots 317, and the insert block 318 can be inserted into the material discharge groove 310 of the transfer plate 305. It should be noted that, in the circumferential direction of the rotating seat 306, the length of the insert block 318 is less than the width of the material discharge groove 310.

[0039] The funnel 302 is fixed together with the material discharge switch plate 301 and clamps the transfer plate 305 in the vertical direction, thereby achieving anti-detachment and synchronous movement. Specifically, the side wall of the funnel 302 has multiple bolt holes 319, and the outer periphery of the material discharge switch plate 301 has threaded holes 320 corresponding to the bolt holes 319. Bolts are passed through the bolt holes 319 of the funnel 302 and screwed into the threaded holes 320 of the material discharge switch plate 301, which can fix the funnel 302 and the material discharge switch plate 301 together. When the material discharge switch plate 301 rotates, it will rotate the funnel 302 together. Since the length of the insert block 318 is less than the width of the groove 317 of the transfer plate in the circumferential direction of the rotating seat 306, the transfer plate 305 will not interfere with or affect the rotation of the funnel 302 and the material discharge switch plate 301.

[0040] The transfer drive mechanism here is a rodless cylinder 321, which is fixedly installed on the top of one of the support seats 303. The rodless cylinder 321 has an output end that moves left and right. Specifically, the rodless cylinder 321 and the linear slide rail 304 are respectively placed on the top of the two support seats 303.

[0041] The transfer plate 305 is mounted on the rodless cylinder 321 and the linear slide rail 304. The rodless cylinder 321 can drive the transfer plate 305 to move left and right.

[0042] The function of the switch plate drive mechanism is to drive the material feeding switch plate 301 to rotate. It includes a second rotary cylinder 322 and a switch block 323. The second rotary cylinder 322 is mounted on a support base 303; specifically, the second rotary cylinder 322 and the rodless cylinder 321 are mounted on the same support base 303. The second rotary cylinder 322 has an output end that rotates about a vertical axis. The switch block 323 is fixedly mounted on the output end of the second rotary cylinder 322 and has two protruding drive arms 324, symmetrically arranged on both sides of the output end of the second rotary cylinder 322. When the second rotary cylinder 322 rotates forward, one drive arm 324 pushes against the force-bearing arm 316 of the material feeding switch plate 301, thereby driving the material feeding switch plate 301 to rotate forward. When the second rotary cylinder 322 rotates in reverse, the other drive arm 324 pushes against the force-bearing arm 316 of the material feeding switch plate 301, thereby driving the material feeding switch plate 301 to rotate in the opposite direction. It should be noted that "forward" and "reverse" are relative concepts and do not impose limitations on the structure or specific usage process. When the two drive arms 324 are located on the left and right sides of the switch block 323, the material feeding switch plate 301 will not contact the drive arms 324 when it moves left and right.

[0043] The guide plate 400 is positioned above the core transfer device 300. Specifically, the guide plate 400 is fixedly mounted above two support seats 303 via four support rods 401. The guide plate 400 has guide slots 402, the number and distribution of which correspond one-to-one with the number and distribution of the magnet slots 602 in the rotor core 600. The guide slots 402 guide the downward movement of the magnets 700, allowing them to smoothly enter the magnet slots 602 of the rotor core 600. The top of the magnet slot 602 is generally flared; if there is a slight deviation between the position of the magnet 700 and the magnet slot 602, the flared structure can straighten and guide the magnet 700.

[0044] The receiving mechanism is arranged vertically and vertically with the guide plate 400, including a receiving box 501 and a vibratory feeder 502. The receiving box 501 is mounted on the worktable 100 via a vibrator, and is located directly below the guide plate 400, between two support bases 303. Specifically, the receiving box 501 has a certain tilt angle, and its lower end extends to the outside of the base. When the receiving box 501 receives the magnet 700, the magnet 700 can move smoothly under the action of the vibrator.

[0045] The vibratory plate 502 is installed on the workbench 100 and located on one side of the receiving box 501. After the magnet 700 moves inside the receiving box 501, it can fall onto the vibratory plate 502. The vibratory plate 502 can prevent the magnets 700 falling from the receiving box 501 from piling up together, so that the falling magnets 700 are distributed and easy for the magnet insertion device 200 to clamp.

[0046] Usage: Move the positioning mechanism to a position offset from the guide plate 400, install the rotor core 600 on the positioning mechanism, and attach the material discharge switch plate 301 to the bottom of the rotor core 600; place the material discharge switch plate 301 in a position offset from the switch plate material discharge groove 314 and the magnet groove 602, at which point the material discharge switch plate 301 is in a blocked position. Move the positioning mechanism to... Figure 1 At the position shown, the rotor core 600 and the guide plate 400 are arranged vertically opposite each other. The magnet insertion device 200 picks up the magnet 700 and inserts it into the rotor core 600 through the guide slot 402 on the guide plate 400. During the insertion process, the material drop switch plate 301 blocks the magnet 700 to prevent it from falling. The positioning mechanism here is in the assembly / disassembly position.

[0047] After insertion, the positioning mechanism moves to Figure 3The positions shown indicate that the guide plate 400 and the positioning mechanism are staggered. At this time, the positioning mechanism is in the inspection station, and during movement, the material discharge switch plate 301 remains in the blocked position. The photographic inspection mechanism takes pictures of the rotor core 600, and uses the acquired images to determine whether the insertion of the magnet 700 is qualified. The photographic inspection mechanism is existing technology and will not be described in detail here.

[0048] If the insertion of magnet 700 is successful, the rotor core 600 with magnet 700 is moved to the next process. If the insertion of magnet 700 is unsuccessful, the positioning mechanism is re-driven to below guide plate 400, rotary cylinder 322 is activated, and the drive arm 324 pushes the force arm 316 to rotate, so that the switch plate dropping slot 314 and magnet slot 602 are aligned. At this time, the dropping switch plate 301 is in the dropping position, opening the dropping channel for magnet 700. In actual operation, if the size of magnet 700 is small, it can fall by its own weight, and no operation is required. If magnet 700 cannot fall by itself, an auxiliary structure is used to assist in its falling. The auxiliary structure can vibrate the rotor core 600, or a push rod can be inserted through guide slot 402 and inserted into magnet slot 602 to push magnet 700 out. The magnet 700 first falls into the receiving box 501, and then enters the vibratory feeder 502.

[0049] After the defective magnet 700 falls, the rotary cylinder 322 is activated, which drives the force arm 316 to rotate in the opposite direction via the drive arm 324, causing the switch plate material drop chute 314 and the magnet slot 602 to be staggered. The magnet insertion device 200 then inserts the magnet 700 back into the rotor core 600. The magnet insertion device 200 can also pick up the magnet 700 from the vibratory plate 502, thus realizing the recycling of the magnet 700.

[0050] In an optional embodiment, to ensure that the material discharge switch plate 301 rotates accurately to the material discharge position and the blocking position, the start and stop times of the rotary cylinder 322 are precisely set. Alternatively, the rotation limit of the material discharge switch plate 301 can be limited by the material discharge groove 310 on the transfer plate 305. Specifically, when the material discharge switch plate 301 rotates, the insert block 318 rotates along with it. When the insert block 318 rotates to contact one of the groove walls of the material discharge groove 310, the material discharge switch plate 301 is in the material discharge position; when the insert block 318 rotates to contact the other groove wall of the material discharge groove 310, the material discharge switch plate 301 is in the blocking position.

[0051] In this embodiment, the positioning mechanism includes a transfer plate 305, a rotating seat 306, a core support plate 307, a central positioning block 308, and a positioning post 309. In other embodiments, the core support plate 307 and the central positioning block 308 can be omitted, and the positioning post 309 can be installed on the top of the rotating seat 306. The material feeding switch plate 301 is fitted onto the rotating seat 306, and the rotor core 600 is placed on the top surface of the rotating seat 306, with the positioning post 309 passing through the positioning process hole 601.

[0052] In this embodiment, the switch board driving mechanism includes a rotary cylinder 322 and a switch block 323 mounted on the base. In other embodiments, the switch board driving mechanism can be mounted on the transfer plate 305, specifically, a gear set can be used to drive the material feeding switch plate 301 to rotate.

[0053] In this embodiment, the magnet insertion device 200 includes a collaborative robot 201 and an insertion mechanism. The collaborative robot 201 drives the insertion mechanism to move and rotate. In other embodiments, a plotter can be used to drive the insertion mechanism to move horizontally. The principle of the plotter can refer to the CoreXY motion structure, which is existing technology. The insertion mechanism is mounted on the power output end of the plotter, and the plotter drives the insertion mechanism to move along the X-axis, Y-axis, and combined movements in the horizontal direction. At the same time, the insertion mechanism is equipped with a Z-axis motion structure, such as a cylinder, to drive the clamping component to move along the Z-axis.

[0054] An embodiment of the rotor core magnet insertion method provided by the present invention: The method for inserting magnets into the rotor core employs a rotor core magnet insertion device. The structure of this device is the same as that described in the previous embodiment and will not be repeated here. The method for inserting magnets into the rotor core includes the following steps: S1, place the rotor core on the positioning mechanism, place the material discharge switch plate in the blocking position, move the positioning mechanism to the loading and unloading station, and insert the magnet into the rotor core using the magnet insertion device. S2, the positioning mechanism moves to the inspection station. If the rotor core passes the inspection, the rotor core is transferred to the next station or removed. If the rotor core fails the inspection, the positioning mechanism moves back to the loading and unloading station, the material dropping switch is placed in the material dropping position, and the magnets on the rotor core fall into the receiving mechanism through the material dropping chute and material dropping channel. S3, put the material dropping switch plate back into the blocked position, and the magnet insertion device inserts the magnet into the rotor core after the magnet has fallen.

[0055] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A rotor core magnet insertion device, comprising a workbench, a magnet insertion device disposed on the workbench, and a core transfer device; characterized in that, The core transfer device includes a base, a positioning mechanism slidably mounted on the base for positioning the rotor core, and a material dropping switch plate. The material dropping switch plate is rotatably mounted on the positioning mechanism around an upwardly extending axis and fits against the bottom of the rotor core. The material dropping switch plate has material dropping slots that correspond one-to-one with the magnetic slots of the rotor core. The base and positioning mechanism have material dropping channels that correspond vertically to the material dropping slots. The rotation stroke of the material dropping switch plate has a blocking position where the material dropping slots and magnetic slots are staggered to prevent the magnets from falling, and a material dropping position where the material dropping slots and magnetic slots are directly opposite each other. The sliding stroke of the positioning mechanism has a loading / unloading station and a testing station. The worktable is equipped with a receiving mechanism corresponding to the loading / unloading station to receive the magnets falling from the discharge chute. When inserting the magnet, the positioning mechanism moves to the loading / unloading station and the discharge switch plate rotates to the blocking position. During testing, the positioning mechanism moves to the testing station. If the magnet assembly is not qualified, the positioning mechanism drives the rotor core to return from the testing station to the loading / unloading station, and the discharge switch plate rotates to the discharge position so that the magnet can fall into the receiving mechanism.

2. The rotor core magnet insertion device according to claim 1, characterized in that, A force-bearing arm is protruding from one horizontal side of the material feeding switch plate; The base is provided with a switch plate drive mechanism corresponding to the loading and unloading station. The switch plate drive mechanism is used to drive the force arm to drive the material dropping switch plate to rotate to the blocking position or the material dropping position.

3. The rotor core magnet insertion device according to claim 2, characterized in that, The switch plate drive mechanism includes a switch block that is rotatably arranged about a vertical axis. The switch block has two drive arms that are symmetrically arranged. The drive arms are used to push the force-bearing arm to rotate.

4. The rotor core magnet insertion device according to claim 1, characterized in that, The base is provided with a guide plate located above the positioning mechanism. The guide plate and the receiving mechanism are arranged vertically opposite each other. The guide plate is provided with guide slots that correspond one-to-one with the magnet slots in the rotor core.

5. The rotor core magnet insertion device according to claim 4, characterized in that, The receiving mechanism includes a receiving box for receiving magnets, one end of which extends downward at an angle to the outside of the base to guide the magnets to the outside of the base. The receiving mechanism also includes a vibratory feeder mounted on the workbench for catching magnets that fall from the receiving box.

6. The rotor core magnet insertion device according to any one of claims 1-5, characterized in that, The positioning mechanism includes a transfer plate and a rotating seat located in the middle of the transfer plate, and the material dropping switch plate is rotatably mounted on the outside of the rotating seat.

7. The rotor core magnet insertion device according to claim 6, characterized in that, The top center of the material feeding switch plate is provided with a receiving groove, and the rotating seat passes into the receiving groove; The positioning mechanism further includes a core support plate disposed in the receiving groove, and the core support plate is fixedly installed in the rotating seat; the core support plate has a plurality of positioning arms evenly distributed along the circumference, and the positioning arms are provided with positioning holes for positioning pins to pass through, and the positioning pins are used to pass through the positioning process holes of the rotor core.

8. The rotor core magnet insertion device according to claim 6, characterized in that, The positioning mechanism also includes a funnel, with slots on opposite sides of the top of the funnel for the transfer plate to pass through; the material discharge switch plate is located inside the funnel and is fixedly connected to the funnel.

9. The rotor core magnet insertion device according to any one of claims 1-5, characterized in that, The magnet insertion device includes a collaborative robot and an insertion mechanism located at the execution end of the collaborative robot. The insertion mechanism includes a clamping component for clamping the magnet.

10. A method for inserting magnets into a rotor core, using the rotor core magnet insertion equipment as described in claim 1, characterized in that, Includes the following steps: S1, place the rotor core on the positioning mechanism, place the material discharge switch plate in the blocking position, move the positioning mechanism to the loading and unloading station, and insert the magnet into the rotor core using the magnet insertion device. S2, the positioning mechanism moves to the inspection station. If the rotor core passes the inspection, the rotor core is transferred to the next station or removed. If the rotor core fails the inspection, the positioning mechanism moves back to the loading and unloading station, the material dropping switch is placed in the material dropping position, and the magnets on the rotor core fall into the receiving mechanism through the material dropping chute and material dropping channel. S3, put the material dropping switch plate back into the blocked position, and the magnet insertion device inserts the magnet into the rotor core after the magnet has fallen.

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