Long-iron-core permanent magnet rotor overlying tool

Abstract

The invention belongs to the technical field of iron core processing, and particularly relates to a long-iron-core permanent magnet rotor overlying tool which comprises a bottom plate, a positioning plate is fixedly mounted at the top of the bottom plate, a hydraulic jack is fixedly mounted on one side of the positioning plate, and pull rods are symmetrically and fixedly mounted at the output end of the hydraulic jack. The outer walls of the two pull rods are in sliding connection with the inner wall of the positioning plate; by pushing the expanding plate to move in the limiting frame, the expanding plate can push the inner supporting plate to move and open from the interior of the limiting frame, the inner supporting plate can move outwards to be attached to the center holes of the multiple rotor punching sheets, and when the outer walls of the multiple inner supporting plates are all attached to the center holes of the multiple rotor punching sheets, the inner supporting plate can move outwards to be attached to the center holes of the multiple rotor punching sheets. The rotor punching sheets are centered and internally supported by the plurality of inner supporting plates, so that on one hand, the plurality of rotor punching sheets can be centered and integrated, and on the other hand, the plurality of rotor punching sheets can be kept in a straight state, and the influence on subsequent lamination operation due to the inclination phenomenon of the rotor punching sheets during arrangement is avoided.

Description

Technical Field

[0001] This invention belongs to the field of iron core processing technology, specifically a tooling for stacking long iron core permanent magnet rotors. Background Technology

[0002] The long iron core permanent magnet rotor is one of the core components of the permanent magnet motor. Its structural features include a long axial length of the rotor iron core and built-in permanent magnets to provide the excitation magnetic field. It is widely used in new energy vehicles, industrial drives, rail transportation and other scenarios that require high power density and high efficiency.

[0003] Long-core permanent magnet rotor lamination is a key process in motor manufacturing. Its core involves stacking and fastening multiple stamped silicon steel sheets (laminated sheets) in a specific manner to form a core structure with predetermined dimensions, rigidity, and magnetic properties. This process directly affects the rotor's mechanical strength, magnetic permeability, and motor operating efficiency.

[0004] In the current technology, when stacking permanent magnet rotors with long iron cores, the rotor may bend due to slight tilting of the laminations or uneven force during stacking. This may make it difficult to insert magnets during subsequent processing, affecting the assembly effect and speed.

[0005] Therefore, the present invention provides a tooling for stacking long iron core permanent magnet rotors. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The tooling for stacking long iron core permanent magnet rotors according to the present invention includes a base plate, a positioning plate fixedly installed on the top of the base plate, a hydraulic jack fixedly installed on one side of the positioning plate, and tie rods symmetrically fixedly installed on the output end of the hydraulic jack. The outer walls of the two tie rods are slidably connected to the inner wall of the positioning plate. A connecting plate is fixedly installed on one end of the two tie rods. A shaft block is fixedly installed on one side of the positioning plate, and a support plate assembly is provided on one side of the shaft block. The support plate assembly includes an inner support plate. The support plate assembly is used to drive the inner support plate to perform central support on multiple rotor laminations. A stacking assembly is provided on one side of the connecting plate. The stacking assembly includes a pressing ring. The stacking assembly is used to drive the pressing ring to centrally stack multiple rotor laminations placed on the shaft block. When multiple rotor laminations need to be stacked, they are placed sequentially on the support assembly on one side of the shaft block. Once the laminations are in place, the support assembly drives the inner support plate to centrally support the laminations, preventing them from tilting and affecting the stacking effect. After the inner support is complete, a hydraulic jack is driven to move the connecting plate via two tie rods. The stacking pusher on one side of the connecting plate then drives the pusher ring to push the multiple rotors supported by the support assembly. The laminations are centered and stacked. When the stacking is completed, welding is performed on the outer circumference of multiple rotor laminations to connect them, thus realizing the stacking tooling for multiple rotor laminations. The stacking assembly and the lamination support assembly work together, and linear bearings are used for guidance and positioning. When stacking multiple rotor laminations, the problem of bending of the permanent magnet rotor after stacking is effectively avoided due to slight tilting of the laminations or uneven force, ensuring the accuracy of the tooling and improving the quality and efficiency of stacking.

[0008] Preferably, the support plate assembly also includes a limiting frame, which is fixedly installed on one side of the shaft block. There are multiple inner support plates, the outer walls of which are slidably connected to the inner wall of the limiting frame. Multiple return springs are provided between the inner sides of the inner support plates and the inner wall of the limiting frame. Expanding plates are fixedly installed on the inner walls of the inner support plates, and the return springs are respectively placed on both sides of the expanding plates. The outer walls of the expanding plates are slidably connected to the inner wall of the limiting frame. When multiple rotor laminations need to be stacked, the rotor laminations are sequentially passed through the outside of the limiting frame. When the multiple rotor laminations have been passed through, the expanding plates are pushed to move within the limiting frame, which in turn pushes the inner support plates to pull the return springs. Once the inner support plate moves outward from the limiting frame, it will move and fit against the center holes of multiple rotor laminations. When the outer walls of the inner support plates are all fitted against the center holes of the rotor laminations, the inner support plates will perform a centering and internal support operation on the rotor laminations. This will center and integrate the multiple rotor laminations, and also keep them straight, preventing tilting during installation and ensuring subsequent stacking operations. Furthermore, by moving the inner support plates relative to each other to support the rotor laminations, this device can stack rotor laminations of various diameters, improving its applicability.

[0009] Preferably, a convex ring is fixedly installed at one end of the limiting frame. The outer wall of the convex ring can slide against the inner wall holes of multiple rotor laminations. When the rotor laminations are inserted, the rotor laminations slide along the outer wall of the convex ring onto the limiting frame by passing multiple rotor laminations through the convex ring at one end of the limiting frame in sequence, and are finally inserted outside the limiting frame for placement. The convex ring is designed so that when inserting the rotor laminations, the rotor laminations can move along the arc surface opened on the outer wall of the convex ring, which facilitates the insertion of the rotor laminations and makes it easier to insert them.

[0010] Preferably, motors are symmetrically fixedly installed on the inner wall of the limiting frame, and a rotating rod is fixedly installed between the output ends of the two motors. Multiple push plates are fixedly installed on the outer wall of the rotating rod, and the outer walls of the multiple push plates can be slidably connected to the outer walls of the multiple expansion plates. When the multiple rotor laminations are inserted, the rotating rod is driven by the drive motor to rotate, and the rotating rod will drive the multiple push plates to rotate, thereby pushing and squeezing the outer walls of the multiple expansion plates. The multiple expansion plates will be pressed and push the multiple inner support plates to move outward from the inside of the limiting frame to open, and perform internal support operation on the rotor laminations, which plays the role of pushing the multiple inner support plates outward.

[0011] Preferably, the stacking assembly further includes two shafts, four symmetrically arranged push rings, and an expansion box on the outside of each of the four push rings. One end of each of the two pressure springs is fixedly connected to the inner side of the connecting plate, and the other end of each of the two shafts is fixedly connected to the outer wall of two of the expansion boxes. The inner walls of each of the four push rings can slide against the outer walls of multiple inner support plates. Transmission components are provided on both sides of the shaft block. When the multiple inner support plates finish supporting the rotor laminations, the driving hydraulic jack moves the connecting plate through two pull rods. The connecting plate then moves the two expansion boxes through the two shafts, thereby causing the two expansion boxes to move. The two push rings move, passing through the convex ring and moving on the limiting frame, thus pushing the rotor laminations on the limiting frame. When two of the push rings pass through the convex ring and move to one end of the limiting frame, through the transmission component, the two push rings will drive the other two push rings to move relative to each other from the other end of the limiting frame. The four push rings will then push the rotor laminations on the limiting frame in a centered manner. When multiple rotor laminations are pressed together and the four push rings cannot move, the stacking operation of the rotor laminations is completed, thus serving to push the rotor laminations to be stacked.

[0012] Preferably, the four push rings are slidably connected in pairs, and the outer walls of the four push rings are slidably connected to the inner walls of the four expansion boxes respectively. An expansion spring is provided between the outer walls of the four push rings and the inner walls of the four expansion boxes. One side of each of the four push rings is formed by an oblique arc surface. When the push rings move towards the limiting frame through the convex rings, the inner supports of the multiple inner support plates move outward, and one end of each inner support plate moves open from one side of the convex ring. Through the continuous movement of the push rings, when the push rings contact one end of the inner support plate, the two push rings will be limited and slide relative to each other by one end of the inner support plate, and the two push rings will... The expansion ring springs are squeezed within the two expansion boxes to expand outwards relative to each other, so that the annular distance between the two push rings is the same as the annular distance between the multiple inner support plates. This facilitates the push rings to push the rotor laminations supported on the inner support plates. By opening the two push rings outwards relative to each other, it is possible to push rotor laminations of different diameters supported on the inner support plates, thereby adjusting the pushing size between the two push rings. On the other hand, it can also push the rotor laminations in a centered manner, making the pushing force on the rotor laminations more uniform and more conducive to the pushing operation of the rotor laminations.

[0013] Preferably, the transmission assembly includes two torque boxes. Each torque box has a pusher rack and a transmission rack symmetrically slidably connected to its inner wall. One end of each transmission rack is fixedly connected to one side of two expansion boxes. Each expansion box has a pusher block fixedly mounted on one end, and one side of each pusher block can contact one end of each pusher rack. Gears are rotatably connected to the middle of the inner walls of both torque boxes. The teeth on the two transmission racks and the pusher rack can mesh with the teeth on the two gears. When two of the pusher rings pass through the convex ring and move to... When the limit frame is at one end, the two push rings will move together with the push block through the expansion box. The two push blocks will then push the push rack in the torque box. Through the meshing of the gears, when the push rack moves, it will drive the transmission rack to move relative to it. The transmission rack will then drive the other two push rings to move from one end of the limit frame to the middle of the limit frame. This achieves the effect of pushing the four push rings from both ends of the limit frame to the middle of the limit frame, thus driving the four push rings to move synchronously.

[0014] Preferably, a return spring is provided between one end of each of the two push-position racks and the outer wall of the positioning plate. One end of each of the two push-position racks is flush with one end of each of the multiple inner support plates. When the push-position rack is pushed by the push block and moves within the rectangular box, the push-position rack will squeeze the return spring within the rectangular box. The push-position rack will then drive the transmission rack to move relative to each other through the gears. The four push rings will then perform a centering and stacking operation relative to the rotor laminations on the limit frame. When the stacking operation is completed, the driving hydraulic jack will drive the connecting plate to reset through the pull rod. The connecting plate will then drive two of the push rings to move and reset. The push block will then lose contact with the push-position rack. At this time, the return spring will elastically push the push-position rack to reset. The transmission rack will then drive the other two push rings to move into the interior of the positioning plate, thus resetting the position of the push-position rack.

[0015] Preferably, a rectangular plate is fixedly installed between the two shafts. A slot is provided on one side of the rectangular plate, and a support is slidably connected inside the slot. A pressure spring is provided between the bottom of the support and the inner wall of the slot. A positioning groove is opened on the inner wall of the base plate. The outer wall of the slot is slidably connected to the inner wall of the positioning groove, and one end of the positioning groove is located directly below the middle of multiple inner support plates. One end of the support is opened as an inclined surface. The outer walls of multiple rotor laminations can be slidably connected to the top of the support. A pushing component is provided between the rectangular plate and the slot. When the connecting plate drives the two pushing rings to move towards the limiting frame, the connecting plate will drive the rectangular plate to move together. The rectangular plate will then push the slot to slide in the positioning groove through the pushing component. When the slot moves to the bottom of the rotor lamination, the rotor lamination is pushed by the continuous movement of the slot. The blades will press the support seat downwards, and the support seat will press the bearing spring downwards within the slot. When the two push rings move to one end of the limit frame, the rectangular plate pushes the slot to one end of the positioning slot, that is, the lower middle position of the limit frame. The support seat will then be placed against the bottom of the rotor lamination. When multiple rotor laminations are welded together, multiple inner support plates are reset by controlling them. The inner support plates will disengage from the inner holes of the rotor laminations, and the rotor laminations will be supported by the support seat and placed on top of the support seat. Then, the connecting plate is reset by driving the hydraulic jack. The support seat will then move and reset, causing the rotor laminations after tooling stacking to move and be removed from the limit frame. This achieves the function of automatically removing the workpiece when the processing is completed, saving some processing and part removal time.

[0016] Preferably, the pushing component includes a shifting rod, one end of which is slidably connected to the inner wall of the rectangular plate. A cavity shaft is fixedly installed on one side of the support. The outer wall of the shifting rod is slidably connected to the inner wall of the cavity shaft. A return spring is provided between one end of the shifting rod and the inner wall of the cavity shaft. When the connecting plate drives the rectangular plate to move, the rectangular plate will push the slot box to move in the positioning slot through the elastic setting of the shifting rod and the return spring. When the slot box moves to one end of the positioning slot, it will be unable to move. The rotor laminations on the limit frame are pushed relative to each other by the four pushing rings. The rectangular plate will drive the shifting rod to squeeze the return spring in the cavity shaft and move. This prevents the slot box from driving the support to position and support the rotor laminations below the middle of the limit frame. It will not affect the pushing operation of the pushing rings on the rotor laminations, thus playing the role of positioning and pushing the support to move.

[0017] The beneficial effects of this invention are as follows: 1. The tooling for stacking long iron core permanent magnet rotors according to the present invention, by pushing the expansion plate to move within the limiting frame, the expansion plate will push the inner support plate to move and open from within the limiting frame. The inner support plate will then move outward to move and fit with the center holes of multiple rotor laminations. When the outer walls of multiple inner support plates are all fitted with the center holes of multiple rotor laminations, the multiple inner support plates achieve the centering and inner support operation of the rotor laminations. On the one hand, it can center and integrate multiple rotor laminations, and on the other hand, it can keep multiple rotor laminations in a straight state, avoiding the phenomenon of tilting during the placement of rotor laminations, which would affect the subsequent stacking operation.

[0018] 2. The tooling for stacking long iron core permanent magnet rotors according to the present invention uses a hydraulic jack to drive a connecting plate to move via two pull rods, thereby causing two expansion boxes to move two push rings. The two push rings then move through the convex rings and onto the limiting frame. When two of the push rings move through the convex rings to one end of the limiting frame, through the transmission component, the two push rings will drive the other two push rings to move relative to each other from the other end of the limiting frame. The four push rings will then push the rotor laminations on the limiting frame in a centered manner, thereby promoting the centered stacking of the rotor laminations.

[0019] 3. The tooling for stacking long iron core permanent magnet rotors according to the present invention, when the pushing ring moves through the convex ring onto the limiting frame, the two pushing rings will slide relative to each other due to the limiting at one end of the inner support plate. The two pushing rings will then expand relative to each other within the two expansion boxes, which facilitates the pushing rings pushing the rotor laminations supported on the inner support plate. By opening the two pushing rings relative to each other, on the one hand, it is convenient to push the rotor laminations of different diameters supported on the inner support plate, and on the other hand, it can push the rotor laminations in a centered manner, so that the pushing force on the rotor laminations is more uniform and more conducive to the pushing operation of the rotor laminations.

[0020] 4. The tooling for stacking long iron core permanent magnet rotors according to the present invention, when two of the pushing rings move through the convex ring to one end of the limiting frame, the two pushing rings will drive the pushing blocks to move together through the expansion box. The two pushing blocks will then push the pushing gear rod to move within the torque box. Through the meshing of the gears, when the pushing gear rod moves, it will drive the transmission gear rod to move relative to it. The transmission gear rod will then drive the other two pushing rings to move from one end of the limiting frame to the middle of the limiting frame, thereby achieving the effect of pushing the four opposing pushing rings from both ends of the limiting frame to the middle of the limiting frame.

[0021] 5. The tooling for stacking long iron core permanent magnet rotors according to the present invention, when the slot box moves to the bottom of the rotor lamination, the rotor lamination will press the support seat downward. When the rectangular plate pushes the slot box to one end of the positioning slot, the support seat will be placed against the bottom of the rotor lamination. When multiple rotor laminations are welded together, the inner support plate is disengaged from the inner hole of the rotor lamination by controlling the inner support plate. The rotor lamination will be supported by the support seat and placed on the top of the support seat. Then, the connecting plate is reset by driving the hydraulic jack. The support seat will move and reset, causing the stacked rotor laminations to move and be removed from the limit frame, thus automatically removing the workpiece. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is an overall diagram of the invention; Figure 2 This is a main body diagram of the present invention; Figure 3 This is a schematic diagram of the support structure in this invention; Figure 4 This is a schematic diagram of the push block structure in this invention; Figure 5 This is a schematic diagram of the structure of the push ring in this invention; Figure 6 This is a structural schematic diagram of the inner support plate in this invention; Figure 7 This is a schematic diagram of the structure of the rotating rod in this invention; Figure 8 This is a schematic diagram of the structure of the expansion plate in this invention.

[0024] In the diagram: 1. Base plate; 2. Hydraulic jack; 3. Tie rod; 4. Positioning plate; 5. Rectangular box; 501. Push rack; 502. Transmission rack; 503. Return spring; 504. Gear; 6. Shaft block; 601. Inner support plate; 602. Limiting frame; 603. Expansion plate; 604. Motor; 605. Rotating rod; 606. Push plate; 607. Return plate spring; 7. Push ring; 701. Expansion box; 702. Push block; 703. Expansion ring spring; 8. Connecting plate; 801. Rectangular plate; 802. Shaft; 803. Cavity shaft; 804. Support; 805. Groove box; 806. Positioning groove; 807. Bearing spring; 808. Return rod spring; 809. Shifting rod; 9. Convex ring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figures 1 to 8 As shown in the embodiment of the present invention, a tooling for stacking long iron core permanent magnet rotors includes a base plate 1. A positioning plate 4 is fixedly installed on the top of the base plate 1. A hydraulic jack 2 is fixedly installed on one side of the positioning plate 4. Tie rods 3 are symmetrically fixedly installed on the output end of the hydraulic jack 2. The outer walls of the two tie rods 3 are slidably connected to the inner wall of the positioning plate 4. A connecting plate 8 is fixedly installed on one end of the two tie rods 3. A shaft block 6 is fixedly installed on one side of the positioning plate 4. A support plate assembly is provided on one side of the shaft block 6. The support plate assembly includes an inner support plate 601. The support plate assembly is used to drive the inner support plate 601 to centrally support multiple rotor laminations. A stacking assembly is provided on one side of the connecting plate 8. The stacking assembly includes a pressing ring 7. The stacking assembly is used to drive the pressing ring 7 to centrally stack multiple rotor laminations placed on the shaft block 6. Because the permanent magnet rotor may bend after stacking due to slight tilting of the laminations or uneven force during the stacking process, it may be difficult to insert the magnets during subsequent processing. When multiple rotor laminations need to be stacked, they are sequentially placed on the support assembly on one side of the shaft block 6. Once the multiple rotor laminations are in place, the inner support plate 601 is driven by the support assembly to centrally support the multiple rotor laminations, preventing them from tilting during placement and affecting the stacking effect. After the inner support of the multiple rotor laminations is completed, the hydraulic jack 2 is then driven to move the connecting plate 8 via two tie rods 3. The stacking pusher on one side of the connecting plate 8 then drives the pusher ring 7 to internally support the supported lamination assembly. Multiple rotor laminations are centrally stacked. Once stacking is complete, the outer circumferences of the multiple rotor laminations are welded together to connect them, thus realizing the stacking fixture for multiple rotor laminations. The stacking assembly and the lamination support assembly work together, and linear bearings are used for guidance and positioning. When stacking multiple rotor laminations, this effectively avoids the problem of bending of the permanent magnet rotor after stacking due to slight tilting or uneven force on the laminations, ensuring the accuracy of the fixture and improving the quality and efficiency of stacking.

[0027] like Figures 4 to 8 As shown, the support assembly also includes a limiting frame 602, which is fixedly installed on one side of the shaft block 6. There are multiple inner support plates 601, and the outer walls of the multiple inner support plates 601 are slidably connected to the inner wall of the limiting frame 602. Multiple return plate springs 607 are provided between the inner side of the multiple inner support plates 601 and the inner wall of the limiting frame 602. Expansion plates 603 are fixedly installed on the inner walls of the multiple inner support plates 601. The multiple return plate springs 607 are respectively placed on both sides of the multiple expansion plates 603. The outer walls of the multiple expansion plates 603 are slidably connected to the inner wall of the limiting frame 602. When multiple rotor laminations need to be stacked, the laminations are sequentially threaded through the outside of the limiting frame 602. Once the laminations are threaded, the expanding plate 603 is moved within the limiting frame 602. The expanding plate 603 then pushes the inner supporting plate 601, pulling the return spring 607 out of the limiting frame 602 and opening it. The inner supporting plate 601 then moves outward to align with the center holes of the multiple rotor laminations. When the outer walls of the inner supporting plates 601 are all aligned with the center holes of the multiple rotor laminations... At this time, multiple inner support plates 601 perform centered inner support operations on the rotor laminations, which serves to support the rotor laminations internally. On the one hand, it can integrate multiple rotor laminations in a centered manner, and on the other hand, it can keep multiple rotor laminations in a straight state, avoiding the phenomenon of tilting during the placement of rotor laminations, which would affect subsequent stacking operations. At the same time, by moving the multiple inner support plates 601 relative to each other to support the rotor laminations internally, this device can perform stacking operations on rotor laminations of various different diameters during operation, improving the applicability of this device.

[0028] like Figures 4 to 8As shown, a protruding ring 9 is fixedly installed at one end of the limiting frame 602, and the outer wall of the protruding ring 9 can slide in contact with the inner wall holes of multiple rotor laminations. When inserting rotor laminations, multiple rotor laminations are sequentially passed through the protruding ring 9 at one end of the limiting frame 602. The rotor laminations slide along the outer wall of the protruding ring 9 onto the limiting frame 602 and are finally placed outside the limiting frame 602 for placement. The protruding ring 9 is designed so that when inserting rotor laminations, the rotor laminations can move along the arc surface of the outer wall of the protruding ring 9, which facilitates the insertion of rotor laminations and makes the insertion of rotor laminations easier.

[0029] like Figures 4 to 8 As shown, motors 604 are symmetrically fixedly installed on the inner wall of the limiting frame 602. A rotating rod 605 is fixedly installed between the output ends of the two motors 604. Multiple push plates 606 are fixedly installed on the outer wall of the rotating rod 605. The outer walls of the multiple push plates 606 can be slidably connected to the outer walls of the multiple expansion plates 603 respectively. When multiple rotor laminations are inserted, the drive motor 604 drives the rotating rod 605 to rotate. The rotating rod 605 then drives multiple push plates 606 to rotate, thereby pushing and pressing the outer walls of multiple expansion plates 603. The multiple expansion plates 603 are then pressed and push the multiple inner support plates 601 outward from inside the limiting frame 602 to perform internal support work on the rotor laminations, thus promoting the outward movement of the multiple inner support plates 601.

[0030] like Figures 2 to 5 As shown, the stacking assembly also includes two shafts 802, four symmetrically arranged push rings 7, an expansion box 701 is provided on the outside of each of the four push rings 7, one end of each of the two pressure springs 807 is fixedly connected to the inner side of the connecting plate 8, the other end of each of the two shafts 802 is fixedly connected to the outer wall of two of the expansion boxes 701, the inner wall of each of the four push rings 7 can slide to the outer wall of multiple inner support plates 601, and transmission components are provided on both sides of the shaft block 6; When the multiple inner support plates 601 finish supporting the rotor laminations, the driving hydraulic jack 2 moves the connecting plate 8 via two tie rods 3. The connecting plate 8 then moves the two expansion boxes 701 via two shafts 802, which in turn moves the two pushing rings 7. The two pushing rings 7 then move through the convex rings 9 and onto the limiting frame 602, thus pushing the rotor laminations on the limiting frame 602. When two of the pushing rings 7 move through the convex rings 9 to one end of the limiting frame 602, through the transmission component, the two pushing rings 7 will drive the other two pushing rings 7 to move relative to each other from the other end of the limiting frame 602. The four pushing rings 7 will then push the rotor laminations on the limiting frame 602 in the center. When the multiple rotor laminations are pressed together and the four pushing rings 7 cannot move, the stacking operation of the rotor laminations is completed, thus promoting the stacking operation of the rotor laminations.

[0031] like Figures 2 to 5 As shown, the four push rings 7 are slidably connected in pairs, the outer walls of the four push rings 7 are slidably connected to the inner walls of the four expansion boxes 701 respectively, and expansion ring springs 703 are provided between the outer walls of the four push rings 7 and the inner walls of the four expansion boxes 701. One side of each of the four push rings 7 is opened into a sloping arc surface. Because the rotor laminations produced by multiple stacking processes have different dimensions, when the pressing ring 7 moves through the convex ring 9 towards the limiting frame 602, the inner supports of the multiple inner support plates 601 move outward, and one end of each inner support plate 601 moves open from one side of the convex ring 9. Through the continuous movement of the pressing ring 7, when the pressing ring 7 contacts one end of the inner support plate 601, the two pressing rings 7 will slide relative to each other due to the limiting effect of one end of the inner support plate 601. The two pressing rings 7 will then compress the expanding ring spring 703 within the two expanding boxes 701, causing them to expand relative to each other. This results in the annular distance between the two pressing rings 7 and the annular distance between the multiple inner support plates 601. The two push rings 7 are positioned so that the push ring 7 can push the rotor laminations supported on the inner support plate 601. The two push rings 7 are relatively outwardly expanded, which makes it easier to push the rotor laminations of different diameters on the inner support plate 601, and adjusts the pushing size between the two push rings 7. On the other hand, it can push the rotor laminations in the center, so that the pushing force on the rotor laminations is more uniform and more conducive to the pushing operation of the rotor laminations. It should be noted that the other two expansion boxes 701 and push rings 7 are placed inside the positioning plate 4, and one side of the two is flush with the other end of the limiting frame 602.

[0032] like Figures 2 to 4As shown, the transmission assembly includes two torque boxes 5. The inner walls of the two torque boxes 5 are symmetrically and slidably connected with push rods 501 and transmission rods 502. One end of the two transmission rods 502 is fixedly connected to one side of two expansion boxes 701. Push blocks 702 are fixedly installed on one end of each of the two expansion boxes 701. One side of the two push blocks 702 can fit and contact one end of the two push rods 501. Gears 504 are rotatably connected to the middle position of the inner walls of the two torque boxes 5. The teeth on the two transmission rods 502 and the push rods 501 can respectively mesh with the teeth on the two gears 504. When two of the push rings 7 pass through the convex ring 9 and move to one end of the limiting frame 602, the two push rings 7 will drive the push block 702 to move together through the expansion box 701. The two push blocks 702 will then push the push position rack 501 to move within the rectangular box 5. Through the meshing of the gear 504, when the push position rack 501 moves, it will drive the transmission rack 502 to move relative to it through the gear 504. The transmission rack 502 will then drive the other two push rings 7 to move from one end of the limiting frame 602 to the middle of the limiting frame 602, thereby achieving the effect of pushing the four push rings 7 from both ends of the limiting frame 602 to the middle of the limiting frame 602 in a centered manner, thus driving the four push rings 7 to push synchronously.

[0033] like Figures 2 to 4 As shown, a return spring 503 is provided between one end of the two push rods 501 and the outer wall of the positioning plate 4, and one end of the two push rods 501 can be flush with one end of the multiple inner support plates 601. When the pusher rack 501 moves within the rectangular box 5 under the push of the pusher block 702, the pusher rack 501 will compress the return spring 503 within the rectangular box 5. The pusher rack 501 will then drive the transmission rack 502 to move relative to it via the gear 504. The four push rings 7 will then perform a centering and stacking operation on the rotor laminations on the limit frame 602. When the stacking operation is completed, the drive hydraulic jack 2 will drive the connecting plate 8 to reset via the pull rod 3. The connecting plate 8 will then drive two of the push rings 7 to move and reset. The pusher block 702 will then lose contact with the pusher rack 501. At this time, the return spring 503 will elastically push the pusher rack 501 to reset. The transmission rack 502 will then drive the other two push rings 7 to move into the interior of the positioning plate 4, thus resetting the position of the pusher rack 501 and preparing for the next stacking transmission.

[0034] like Figures 2 to 3As shown, a rectangular plate 801 is fixedly installed between two shafts 802. A slot box 805 is provided on one side of the rectangular plate 801. A support 804 is slidably connected inside the slot box 805. A pressure spring 807 is provided between the bottom of the support 804 and the inner wall of the slot box 805. A positioning groove 806 is opened on the inner wall of the base plate 1. The outer wall of the slot box 805 is slidably connected to the inner wall of the positioning groove 806, and one end of the positioning groove 806 is located directly below the middle of multiple inner support plates 601. One end of the support 804 is opened as an inclined surface. The outer walls of multiple rotor laminations can be slidably connected to the top of the support 804. A pushing component is provided between the rectangular plate 801 and the slot box 805. When the connecting plate 8 moves the two pushing rings 7 towards the limiting frame 602, the connecting plate 8 will also move the rectangular plate 801. The rectangular plate 801 will then push the slot box 805 to slide within the positioning slot 806 via the pushing component. When the slot box 805 moves below the rotor laminations, the rotor laminations will press the support 804 downwards due to the continuous movement of the slot box 805. The support 804 will then press the pressure spring 807 downwards within the slot box 805. When the two pushing rings 7 move to one end of the limiting frame 602, the rectangular plate 801 will push the slot box 805 to one end of the positioning slot 806, i.e., the limiting frame. At the lower center of 602, the support 804 will be placed against the bottom of the rotor lamination. When multiple rotor laminations are welded together, the multiple inner support plates 601 are reset by controlling them. The inner support plates 601 will disengage from the inner holes of the rotor laminations, and the rotor laminations will be supported by the support 804 and placed on top of the support 804. Then, the connecting plate 8 is reset by driving the hydraulic jack 2. The support 804 will move and reset, and the rotor laminations after tooling stacking will move and be taken out from the limit frame 602. This achieves the function of automatically removing the workpiece when the processing operation is completed, saving some processing and part removal time.

[0035] like Figures 2 to 3 As shown, the pushing component includes a shift rod 809, one end of which is slidably connected to the inner wall of the rectangular plate 801. A cavity shaft 803 is fixedly installed on one side of the support 804. The outer wall of the shift rod 809 is slidably connected to the inner wall of the cavity shaft 803. A return rod spring 808 is provided between one end of the shift rod 809 and the inner wall of the cavity shaft 803. When the connecting plate 8 moves the rectangular plate 801, the rectangular plate 801 will push the slot box 805 to move in the positioning slot 806 through the elastic setting of the shift rod 809 and the return rod spring 808. When the slot box 805 moves to one end of the positioning slot 806, the slot box 805 will be unable to move. The four push rings 7 will push the rotor laminations on the limit frame 602 relative to each other. The rectangular plate 801 will then drive the shift rod 809 to squeeze the return rod spring 808 in the cavity shaft 803 to move. This prevents the slot box 805 from driving the support seat 804 to position and support the rotor laminations below the middle of the limit frame 602. It will not affect the pushing operation of the push rings 7 on the rotor laminations, and will play the role of positioning and pushing the support seat 804 to move.

[0036] Working principle: When multiple rotor laminations need to be stacked, the multiple rotor laminations are placed sequentially on the support assembly on one side of the shaft block 6. When the multiple rotor laminations are in place, the inner support plate 601 is driven by the support assembly to support the multiple rotor laminations in the center, preventing the multiple rotor laminations from tilting during placement and affecting the stacking effect. When the internal support of the multiple rotor laminations is finished, the hydraulic jack 2 is then driven to move the connecting plate 8 through the two tie rods 3. The stacking pusher on one side of the connecting plate 8 will then drive the pusher ring 7 to push the supported lamination assembly. Multiple rotor laminations with internal supports are centrally stacked. When the stacking is completed, welding is performed on the outer circumference of the multiple rotor laminations to connect them, thus realizing the stacking tooling for multiple rotor laminations. The stacking assembly and the support assembly work together and are guided and positioned by linear bearings. When stacking multiple rotor laminations, the problem of bending of the permanent magnet rotor after stacking is effectively avoided due to slight tilting of the laminations or uneven force, ensuring the accuracy of the tooling and improving the quality and efficiency of stacking. When multiple rotor laminations need to be stacked, the laminations are sequentially threaded through the outside of the limiting frame 602. Once the laminations are threaded, the expanding plate 603 is moved within the limiting frame 602. The expanding plate 603 then pushes the inner supporting plate 601, pulling the return spring 607 out of the limiting frame 602 and opening it. The inner supporting plate 601 then moves outward to align with the center holes of the multiple rotor laminations. When the outer walls of the inner supporting plates 601 are all aligned with the center holes of the multiple rotor laminations... At this time, multiple inner support plates 601 perform centered inner support operation on the rotor laminations, which serves to support the rotor laminations internally. On the one hand, it can integrate multiple rotor laminations in the center, and on the other hand, it can keep multiple rotor laminations in a straight state, avoiding the phenomenon of tilting during the placement of rotor laminations, which would affect the subsequent stacking operation. At the same time, by moving the multiple inner support plates 601 relative to each other to support the rotor laminations internally, this device can perform stacking operation on rotor laminations of various different diameters during operation, improving the applicability of this device. When inserting rotor laminations, multiple rotor laminations are sequentially passed through the protruding ring 9 at one end of the limiting frame 602. The rotor laminations slide along the outer wall of the protruding ring 9 onto the limiting frame 602 and are finally placed outside the limiting frame 602 for placement. The protruding ring 9 is designed so that when inserting rotor laminations, the rotor laminations can move along the arc surface of the outer wall of the protruding ring 9, which facilitates the insertion of rotor laminations and makes it easier to insert rotor laminations. When multiple rotor laminations are inserted, the drive motor 604 drives the rotating rod 605 to rotate. The rotating rod 605 drives multiple push plates 606 to rotate, thereby pushing and pressing the outer walls of multiple expansion plates 603. The multiple expansion plates 603 are then pressed and push the multiple inner support plates 601 to move outward from inside the limiting frame 602 to perform internal support work on the rotor laminations, thus promoting the outward movement of the multiple inner support plates 601. When the multiple inner support plates 601 finish supporting the rotor laminations, the driving hydraulic jack 2 drives the connecting plate 8 to move via two tie rods 3. The connecting plate 8 then drives the two expansion boxes 701 to move via two shafts 802, thereby causing the two expansion boxes 701 to drive the two push rings 7 to move. The two push rings 7 then move through the convex ring 9 and move on the limiting frame 602, thereby pushing the rotor laminations on the limiting frame 602. When two of the push rings 7 move through the convex ring 9 to one end of the limiting frame 602, through the transmission component, the two push rings 7 will drive the other two push rings 7 to move relative to each other from the other end of the limiting frame 602. The four push rings 7 will then push the rotor laminations on the limiting frame 602 in the center. When the multiple rotor laminations are pressed together and the four push rings 7 cannot move, the stacking operation of the rotor laminations is completed, which plays the role of pushing the rotor laminations to perform the stacking operation. When the push ring 7 moves through the convex ring 9 onto the limiting frame 602, the inner supports of the multiple inner support plates 601 move outward, and one end of each inner support plate 601 moves open from one side of the convex ring 9. Through the continuous movement of the push ring 7, when the push ring 7 contacts one end of the inner support plate 601, the two push rings 7 will slide relative to each other due to the limiting effect of one end of the inner support plate 601. The two push rings 7 will then compress the expansion spring 703 within the two expansion boxes 701, causing them to expand relative to each other, thus widening the ring between the two push rings 7. The annular distance between the inner support plates 601 is the same as that between the inner support plates 601, which facilitates the pushing ring 7 to push the rotor laminations supported on the inner support plates 601. By opening the two pushing rings 7 outward relative to each other, on the one hand, it is convenient to push the rotor laminations of different diameters on the inner support plates 601, which plays the role of adjusting the pushing size between the two pushing rings 7. On the other hand, it pushes the rotor laminations in the center, so that the pushing force on the rotor laminations is more uniform when pushing, which is more conducive to the pushing operation of the rotor laminations. When two of the push rings 7 pass through the convex ring 9 and move to one end of the limiting frame 602, the two push rings 7 will drive the push block 702 to move together through the expansion box 701. The two push blocks 702 will then push the push position rack 501 to move within the rectangular box 5. Through the meshing of the gear 504, when the push position rack 501 moves, it will drive the transmission rack 502 to move relative to each other through the gear 504. The transmission rack 502 will then drive the other two push rings 7 to move from one end of the limiting frame 602 to the middle of the limiting frame 602, thereby achieving the effect of pushing the four push rings 7 from both ends of the limiting frame 602 to the middle of the limiting frame 602 in a centered manner, thus driving the four push rings 7 to push synchronously. When the pusher rack 501 moves within the rectangular box 5 under the push of the pusher block 702, the pusher rack 501 will compress the return spring 503 within the rectangular box 5. The pusher rack 501 will then drive the transmission rack 502 to move relative to each other via the gear 504. The four push rings 7 will then perform a centering and stacking operation on the rotor laminations on the limit frame 602. When the stacking operation is completed, the drive hydraulic jack 2 will drive the connecting plate 8 to reset via the pull rod 3. The connecting plate 8 will then drive two of the push rings 7 to move and reset. The pusher block 702 will then lose contact with the pusher rack 501. At this time, the return spring 503 will push the pusher rack 501 to reset through elasticity. The transmission rack 502 will then drive the other two push rings 7 to move into the interior of the positioning plate 4, thereby resetting the position of the pusher rack 501. When the connecting plate 8 moves the two pushing rings 7 towards the limiting frame 602, the connecting plate 8 will also move the rectangular plate 801. The rectangular plate 801 will then push the slot box 805 to slide within the positioning slot 806 via the pushing component. When the slot box 805 moves below the rotor laminations, the rotor laminations will press the support 804 downwards due to the continuous movement of the slot box 805. The support 804 will then press the pressure spring 807 downwards within the slot box 805. When the two pushing rings 7 move to one end of the limiting frame 602, the rectangular plate 801 will push the slot box 805 to one end of the positioning slot 806, i.e., the limiting frame. At the lower center of 602, the support 804 will be placed against the bottom of the rotor lamination. When multiple rotor laminations are welded together, the multiple inner support plates 601 are reset by controlling them. The inner support plates 601 will disengage from the inner holes of the rotor laminations, and the rotor laminations will be supported by the support 804 and placed on top of the support 804. Then, the connecting plate 8 is reset by driving the hydraulic jack 2. The support 804 will move and reset, and the rotor laminations after tooling stacking will move and be taken out from the limit frame 602. This achieves the function of automatically taking out the workpiece when the processing operation is completed, saving a certain amount of processing and part removal time. When the connecting plate 8 moves the rectangular plate 801, the rectangular plate 801 will push the slot box 805 to move in the positioning slot 806 through the elastic setting of the shift rod 809 and the return rod spring 808. When the slot box 805 moves to one end of the positioning slot 806, the slot box 805 will be unable to move. The four push rings 7 will push the rotor laminations on the limit frame 602 relative to each other. The rectangular plate 801 will then drive the shift rod 809 to squeeze the return rod spring 808 in the cavity shaft 803 to move. This prevents the slot box 805 from driving the support seat 804 to position and support the rotor laminations below the middle of the limit frame 602. It will not affect the pushing operation of the push rings 7 on the rotor laminations, and will play the role of positioning and pushing the support seat 804 to move.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tooling for stacking long iron core permanent magnet rotors, characterized in that: The system includes a base plate, a positioning plate fixedly mounted on the top of the base plate, a hydraulic jack fixedly mounted on one side of the positioning plate, and tie rods symmetrically mounted on the output ends of the hydraulic jacks. The outer walls of the two tie rods are slidably connected to the inner wall of the positioning plate. A connecting plate is fixedly mounted on one end of the two tie rods. A shaft block is fixedly mounted on one side of the positioning plate, and a support plate assembly is provided on one side of the shaft block. The support plate assembly includes an inner support plate and is used to drive the inner support plate to centrally support multiple rotor laminations. A stacking assembly is provided on one side of the connecting plate and includes a pressing ring. The stacking assembly is used to drive the pressing ring to centrally stack multiple rotor laminations placed on the shaft block.

2. The tooling for stacking long iron core permanent magnet rotors according to claim 1, characterized in that: The support assembly also includes a limiting frame, which is fixedly installed on one side of the shaft block. There are multiple inner support plates, and the outer walls of the multiple inner support plates are slidably connected to the inner wall of the limiting frame. Multiple return plate springs are provided between the inner side of the multiple inner support plates and the inner wall of the limiting frame. Expansion plates are fixedly installed on the inner walls of the multiple inner support plates, and the multiple return plate springs are respectively placed on both sides of the multiple expansion plates. The outer walls of the multiple expansion plates are slidably connected to the inner wall of the limiting frame.

3. The tooling for stacking long iron core permanent magnet rotors according to claim 2, characterized in that: A convex ring is fixedly installed at one end of the limit frame, and the outer wall of the convex ring can slide in contact with the inner wall holes of multiple rotor laminations.

4. The tooling for stacking long iron core permanent magnet rotors according to claim 3, characterized in that: Motors are symmetrically fixedly installed on the inner wall of the limit frame. A rotating rod is fixedly installed between the output ends of the two motors. Multiple push plates are fixedly installed on the outer wall of the rotating rod. The outer walls of the multiple push plates can be slidably connected to the outer walls of the multiple expansion plates.

5. The tooling for stacking long iron core permanent magnet rotors according to claim 4, characterized in that: The stacking assembly also includes two shafts, four symmetrically arranged push rings, an expansion box on the outside of each of the four push rings, one end of each of the two pressure springs fixedly connected to the inside of the connecting plate, the other end of each of the two shafts fixedly connected to the outer wall of two of the expansion boxes, the inner wall of each of the four push rings being able to slide against the outer wall of multiple inner support plates, and transmission components on both sides of the shaft block.

6. The tooling for stacking long iron core permanent magnet rotors according to claim 5, characterized in that: The four push rings are slidably connected in pairs, and the outer walls of the four push rings are slidably connected to the inner walls of the four expansion boxes respectively. An expansion ring spring is provided between the outer walls of the four push rings and the inner walls of the four expansion boxes. One side of each of the four push rings is opened into a sloping arc surface.

7. The tooling for stacking long iron core permanent magnet rotors according to claim 6, characterized in that: The transmission assembly includes two torque boxes. The inner walls of the two torque boxes are symmetrically and slidably connected with push rods and transmission rods. One end of each transmission rod is fixedly connected to one side of two expansion boxes. Push blocks are fixedly installed on one end of each expansion box. One side of each push block can fit into contact with one end of each push rod. Gears are rotatably connected to the middle of the inner walls of the two torque boxes. The teeth on the two transmission rods and the push rods can mesh with the teeth on the two gears respectively.

8. The tooling for stacking long iron core permanent magnet rotors according to claim 7, characterized in that: Each of the two push rods has a return spring between one end and the outer wall of the positioning plate, and one end of each push rod can be flush with one end of multiple inner support plates.

9. The tooling for stacking long iron core permanent magnet rotors according to claim 8, characterized in that: A rectangular plate is fixedly installed between two shafts. A slot box is provided on one side of the rectangular plate. A support is slidably connected inside the slot box. A pressure spring is provided between the bottom of the support and the inner wall of the slot box. A positioning groove is opened on the inner wall of the base plate. The outer wall of the slot box is slidably connected to the inner wall of the positioning groove, and one end of the positioning groove is located directly below the middle of multiple inner support plates. One end of the support is opened as an inclined surface. The outer walls of multiple rotor laminations can be slidably connected to the top of the support. A pushing component is provided between the rectangular plate and the slot box.

10. The tooling for stacking long iron core permanent magnet rotors according to claim 9, characterized in that: The pushing component includes a shifting rod, one end of which is slidably connected to the inner wall of the rectangular plate. A cavity shaft is fixedly installed on one side of the support. The outer wall of the shifting rod is slidably connected to the inner wall of the cavity shaft. A return spring is provided between one end of the shifting rod and the inner wall of the cavity shaft.

Images