Casting piece feeding device and method for manufacturing sintered neodymium-iron-boron permanent magnet material

Abstract

The invention belongs to the technical field of magnet manufacturing, and particularly relates to a casting piece feeding device and method for manufacturing a sintered neodymium-iron-boron permanent magnet material. The casting piece feeding device for manufacturing the sintered neodymium-iron-boron permanent magnet material has the functions of stable conveying and convenient dumping. Comprising a linear motor capable of rotating and swinging to adjust the conveying angle, a clamping assembly and the like, and the clamping assembly used for clamping a flange of an upper end opening of a material barrel is arranged on the linear motor. In the process that the lifting arm is driven by the linear motor to gradually and obliquely move upwards, the lifting arm can be cooperatively matched with the overturning limiting base through meshing transmission of the rack and the gear, the circumferential direction, the upper side and the lower side of the flange of the material barrel are clamped and limited, and then slipping or shaking in the conveying and dumping process can be effectively prevented; the operation safety and stability can be obviously improved; and through an auxiliary supporting structure integrating an automatic overturning and dumping function and connecting a clamping hook to the bottom of the material barrel in a hanging mode, it is guaranteed that casting piece materials are stably conveyed and conveniently discharged.

Description

Technical Field

[0001] The invention belongs to the technical field of magnet manufacturing, and in particular relates to a casting sheet feeding device and method for manufacturing sintered NdFeB permanent magnet materials. Background Art

[0002] When the NdFeB casting sheet material is subjected to the hydrogen crushing process, the casting sheet material needs to be sent to the hydrogen crushing furnace for hydrogen crushing. During the feeding process, the staff usually needs to use a crane to lift the barrel containing the casting sheet material to the feed hopper of the hydrogen crushing furnace for adding. In order to facilitate the dumping of the casting sheet material, the staff needs to tie the crane's sling to the middle of the barrel in advance and then lift it.

[0003] At present, during the lifting process, since the position and direction of the barrel containing the flake material often need to be controlled in real time by the staff, the barrel will shake during the lifting, which makes the flake material or the barrel at risk of falling, causing certain safety hazards to the staff below; in addition, after the flake material is lifted to the designated location, manual assistance is still required to pour the flake material in the barrel into the feed hopper of the hydrogen crushing furnace. The overall efficiency of this unloading method is low.

[0004] To this end, a device and method for feeding casting sheets for the manufacture of sintered NdFeB permanent magnet materials with smooth transportation and easy dumping functions are particularly proposed to improve the automation level, operation safety and production efficiency of the sintered NdFeB material production process. Summary of the Invention

[0005] In order to overcome the disadvantages of certain safety hazards and low unloading efficiency when transporting and unloading cast sheet materials using the existing lifting method, a cast sheet feeding device for the manufacture of sintered NdFeB permanent magnet materials is provided, which has the functions of stable transportation and easy dumping.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a casting feeding device for manufacturing sintered NdFeB permanent magnet materials, comprising a frame, a discharge seat and a linear motor capable of rotating and swinging to adjust the conveying angle, the linear motor having a movable seat, and also comprising a flipping assembly and a clamping assembly, the movable seat is provided with a clamping assembly for clamping the upper port flange of the barrel, the clamping assembly comprises a lifting frame, a connecting shaft, a lifting arm and a rotating arm, the lifting frame is fixedly connected to the movable seat, the lower side of the lifting frame is symmetrically rotatably connected with the connecting shaft, the lifting arm is fixedly connected between the two connecting shafts, the rotating arm is also sleeved on the two connecting shafts, a flipping assembly for controlling the rotation angle of the lifting arm is provided between the lifting frame and the rotating arm, the flipping assembly comprises a fixed shaft, a hydraulic cylinder and a rotation limiter, a fixed shaft is provided on the upper part of the lifting frame, the fixed shaft is rotatably connected with the hydraulic cylinder, and the telescopic shaft end of the hydraulic cylinder is rotatably connected to the end of the rotating arm away from the connecting shaft, the lifting arm is also provided with a rotation limiter that can flip and swing, and is used to cooperate with the lifting arm to clamp the other side of the barrel port flange.

[0007] As a further improvement of the above technical solution, the rotary limit member includes a rotating shaft, a connecting arm, a limit seat and a pushing member. The upper side of the lifting arm is rotatably connected to the rotating shaft, one end of the rotating shaft is fixedly connected to the connecting arm, and the end of the connecting arm away from the rotating shaft is connected to the limit seat. A pushing member is also provided between the lifting arm and the rotating shaft for driving the limit seat to flip toward the side of the barrel.

[0008] As a further improvement of the above technical solution, the pushing member includes a gear, a guide rod, a push arm, a rack and a spring. The other end of the rotating shaft is connected to a gear through a spline sleeve. A guide rod is slidingly sleeved on one side of the lifting arm. One end of the guide rod is connected to the push arm, and one end of the push arm is connected to a rack meshing with the gear. A spring is also sleeved on the guide rod, one end of the spring is connected to the push arm, and the other end is connected to the lifting arm. When the guide rod is squeezed and moved, it can drive the push arm and the rack to move synchronously, so that the gear can drive the connecting arm and the limit seat to flip synchronously through the rotating shaft to lock the barrel.

[0009] As a further improvement of the above technical solution, it also includes a movable arm, a pull rod and a hook. The lifting arm is provided with a movable arm that can slide horizontally to adjust the position, and the movable arm and the guide rod are maintained in the same horizontal position. When the movable arm is squeezed by the barrel and moves toward the side of the guide rod, it can push the guide rod to move synchronously. A pull rod is movably provided in the middle of the movable arm, and a hook is provided at the lower end of the pull rod for hooking the convex ring at the bottom of the barrel to assist the barrel in flipping and dumping smoothly.

[0010] As a further improvement of the above technical solution, the discharge seat is provided with an inclined groove which is wide at the top and narrow at the bottom for positioning the barrel, and one side of the inclined groove is provided with an opening for accommodating the hook.

[0011] As a further improvement of the above technical solution, it also includes an electric slide rail, an adjustment frame and a support arm. The electric slide rail is provided on one side of the unloading area of ​​the linear motor, and the adjustment frame is provided on the slide seat of the electric slide rail. The linear motor is also rotatably connected to the side close to the electric slide rail. The support arm is provided with an adjustment slot, and the lower end of the adjustment frame is movably sleeved in the adjustment slot.

[0012] As a further improvement of the above technical solution, it also includes a cylinder, a slotted swing arm and an adjusting rod. The cylinder is installed on the other side of the bottom of the frame, and an adjusting rod is provided at the end of the telescopic shaft of the cylinder. The two ends of the rotating shaft on the upper part of the frame are respectively provided with slotted swing arms, and the adjusting rod is movably passed through the slotted swing arm to adjust the inclination angle of the linear motor conveying.

[0013] A method for feeding casting sheets for manufacturing sintered NdFeB permanent magnet materials comprises the following steps: S1. Place the barrel on the discharge seat with a wide upper and narrow lower chute at the bottom of the frame; S2. The lifting frame is driven upward by controlling the linear motor so that the lifting arm can move obliquely upward and engage with the flange of the upper port of the barrel, thereby realizing the oblique upward and smooth lifting and conveying of the barrel; S3. Under the push of the barrel, the pusher drives the rotating shaft to drive the connecting arm and the limit seat to flip to one side of the barrel through the meshing transmission of the rack and the gear, so that the limit seat can just press on the other side of the flange at the upper end of the barrel to achieve double-sided clamping of the barrel end, ensuring stable and reliable clamping; S4. As the lifting arm is gradually raised, the pull rod can be tightened to limit the bottom hook of the barrel, so as to further improve the stability of the barrel flipping and transportation process; S5. When the barrel is transported to the unloading area, the telescopic shaft of the hydraulic cylinder is controlled to shorten, which can pull the rotating arm, connecting shaft and lifting arm to flip synchronously as a whole, so as to dump the casting material in the barrel into the feed hopper of the hydrogen crushing furnace.

[0014] The beneficial effects of the present invention are as follows: during the gradual upward movement of the lifting arm driven by the linear motor, the lifting arm can cooperate with the flip limit seat through the meshing transmission of the rack and gear to achieve circumferential and upper and lower side clamping and limiting of the barrel flange, thereby effectively preventing slippage or shaking during transportation and dumping, which is beneficial to significantly improve operational safety and stability; and by integrating automatic flipping and dumping functions and an auxiliary support structure with a hook hung on the bottom of the barrel, it is beneficial to ensure smooth transportation and convenient unloading of the casting material, thereby helping to reduce manual intervention and improve production efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the locking assembly and the flip assembly of the present invention.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the movable arm, the pull rod and the hook of the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the flip assembly of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the flip assembly of the present invention when viewed from above.

[0021] Figure 7 This is a diagram of the limit seat of the present invention in the flipped and unfolded state.

[0022] Figure 8 This is a state diagram of the material barrel during the transfer process of the present invention.

[0023] Figure 9 This is a state diagram of the lifting arm, the limiting seat and the hook of the present invention when the material barrel is fixed synchronously.

[0024] Figure 10 It is a schematic diagram of the connection structure of the cylinder, the grooved swing arm and the adjustment rod of the present invention.

[0025] Markings in the accompanying drawings: 1-frame, 2-discharging seat, 3-linear motor, 30-moving seat, 31-cylinder, 32-slotted swing arm, 33-adjusting rod, 4-lifting frame, 40-fixed shaft, 5-connecting shaft, 6-lifting arm, 7-rotating arm, 8-hydraulic cylinder, 9-moving arm, 10-pull rod, 11-hook, 12-bevel groove, 13-opening, 14-rotating shaft, 15-connecting arm, 16-limiting seat, 17-gear, 18-guide rod, 19-push arm, 20-rack, 21-spring, 22-electric slide rail, 23-adjusting frame, 24-support arm, 25-adjusting groove, a-barrel. DETAILED DESCRIPTION

[0026] First specific embodiment: The present invention provides a casting feeding device for manufacturing sintered NdFeB permanent magnet materials, such as Figures 1 to 9As shown, it includes a frame 1, a discharge seat 2, a linear motor 3, a flip assembly and a positioning assembly. A discharge seat 2 for placing a material bucket a is provided on the rear side of the bottom of the frame 1, and a chute 12 with a wide top and a narrow bottom is provided on the discharge seat 2 for positioning the material bucket a. The chute 12 facilitates quick positioning of the material bucket a, ensuring that the loading position is consistent each time, which is conducive to improving the consistency of operation; a linear motor 3 that can rotate and swing to adjust the conveying angle is provided on the upper part of the frame 1 through a rotating shaft, and the linear motor 3 has a moving seat 30, wherein the side of the linear motor 3 away from the frame 1 is the unloading area; a positioning assembly for clamping the flange of the upper port of the material bucket a is provided on the moving seat 30, and the positioning assembly includes a lifting frame 4, a connecting shaft 5, a lifting arm 6 and a rotating arm 7. The lifting frame 4 is fixedly connected to the moving seat 30, and the lower side of the lifting frame 4 is symmetrically connected to the connecting shaft 5. The two connecting shafts 5 are fixed between each other. A lifting arm 6 with a U-shaped structure is connected, wherein the distance between the two arms of the U-shaped lifting arm 6 is slightly larger than the outer diameter of the barrel body of the material barrel a and smaller than the outer diameter of the flange; a rotating arm 7 is also connected to the middle part of the two connecting shafts 5 through a spline sleeve, and a flipping assembly for controlling the rotation angle of the lifting arm 6 is provided between the lifting frame 4 and the rotating arm 7. The flipping assembly includes a fixed shaft 40, a hydraulic cylinder 8 and a rotation limiter. A fixed shaft 40 is provided on the upper part of the lifting frame 4, and a hydraulic cylinder 8 is rotatably connected to the fixed shaft 40, and the telescopic shaft end of the hydraulic cylinder 8 is rotatably connected to the end of the rotating arm 7 away from the connecting shaft 5. The lifting arm 6 is also provided with a rotation limiter that can be flipped and swung, which is used to cooperate with the lifting arm 6 to clamp the other side of the flange of the port of the material barrel a; the dual matching support structure of the lifting arm 6 with the U-shaped structure and the rotation limiter is conducive to ensuring the stability of the material barrel a during transportation and flipping.

[0027] like Figures 5 to 9 As shown, the rotation limit member includes a rotating shaft 14, a connecting arm 15, a limiting seat 16 and a pushing member. The upper side of the lifting arm 6 is rotatably connected to the rotating shaft 14, and one end of the rotating shaft 14 is fixedly connected to the connecting arm 15. The end of the connecting arm 15 away from the rotating shaft 14 is connected to the limiting seat 16 with a U-shaped structure, and the inner side of the limiting seat 16 is designed as an L-shaped structure, which is conducive to clamping and limiting the flange at the upper end of the bucket a; a pushing member is also provided between the lifting arm 6 and the rotating shaft 14, which is used to drive the limiting seat 16 to flip toward the side of the bucket a; through the coordinated cooperation of the lifting arm 6 and the rotation limit member, the bucket a can be effectively prevented from slipping or shaking during transportation, which is conducive to improving operation safety.

[0028] like Figures 5 to 9As shown, the pushing member includes a gear 17, a guide rod 18, a push arm 19, a rack 20 and a spring 21. The other end of the rotating shaft 14 is connected to the gear 17 through a spline sleeve, and a guide rod 18 is slidably sleeved on one side of the lifting arm 6. One end of the guide rod 18 is connected to the push arm 19, and one end of the push arm 19 is connected to the rack 20 meshing with the gear 17. A spring 21 is also sleeved on the guide rod 18, one end of the spring 21 is connected to the push arm 19, and the other end is connected to the lifting arm 6. The spring 21 is a tension spring for resetting the guide rod 18, the push arm 19 and the rack 20; when the guide rod 18 is squeezed and moved, it can drive the push arm 19 and the rack 20 to move synchronously, so that the gear 17 can drive the connecting arm 15 and the limit seat 16 to flip synchronously through the rotating shaft 14 to lock the barrel a.

[0029] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 8 and Figure 9 As shown, it also includes a movable arm 9, a pull rod 10 and a hook 11. The lifting arm 6 is provided with a movable arm 9 that can slide horizontally to adjust the position, and the movable arm 9 and the guide rod 18 are maintained in the same horizontal position. When the movable arm 9 is squeezed by the bucket a and moves toward the side of the guide rod 18, it can push the guide rod 18 to move synchronously. A pull rod 10 is movably provided in the middle of the movable arm 9, and a hook 11 is provided at the lower end of the pull rod 10 for hooking the convex ring at the bottom of the bucket a, and an opening 13 for accommodating the hook 11 is provided on one side of the inclined groove 12. When placing the bucket a, the pull rod 10 and the hook 11 can be pushed to the side of the bucket a first, so that the hook 11 can be accommodated in the opening 13, which is conducive to hanging the hook 11 on the inner side of the convex ring at the bottom of the bucket a; by integrating the flipping assembly with the pull rod 10 and the auxiliary support structure of the hook 11, the bucket a can be automatically and smoothly dumped, reducing manual intervention, and improving the degree of automation and production efficiency.

[0030] First, place the bucket a filled with the casting material on the discharge seat 2 at the bottom of the frame 1, and the bottom of the bucket a is embedded in the inclined groove 12 of the discharge seat 2 to achieve rapid positioning; then start the linear motor 3 to drive the moving seat 30 to rise; because the lifting arm 6 of the U-shaped structure is initially located on the lower side of the bucket a, and the distance between the two arms is slightly larger than the outer diameter of the barrel body of the bucket a and smaller than the outer diameter of the flange above the bucket a, when the positioning assembly moves obliquely upward along the linear motor 3 to the flange of the bucket a, the U-shaped lifting arm 6 is just stuck in the lower side of the flange; as the linear motor 3 continues to As the lifting continues, the movable arm 9 is squeezed by the barrel a and moves toward the guide rod 18. At the same time, the movable arm 9 will gradually move up along the pull rod 10 along with the lifting of the lifting arm 6, and the guide rod 18 will drive the push arm 19 and the rack 20 to move synchronously, and the spring 21 is stretched; through the meshing transmission of the rack 20 and the gear 17, the driving shaft 14 drives the connecting arm 15 and the limit seat 16 to flip toward the barrel a side, so that the limit seat 16 presses the other side of the flange, and forms a closed clamping structure together with the lifting arm 6 to achieve double-sided clamping of the end of the barrel a. The clamping mechanism is tightened to ensure a firm and stable clamping, which is conducive to smooth overturning. At the same time, the hook 11 is hung on the inner side of the convex ring at the bottom of the bucket a. As the lifting arm 6 is lifted, when the upper end of the pull rod 10 is completely hung on the moving arm 9, the hook 11 will be tightened to achieve the auxiliary hook limit on the bottom of the bucket a, which is conducive to further improving the overturning stability. After the bucket a is transported to the unloading area, the telescopic shaft of the hydraulic cylinder 8 is controlled to shorten, pulling the rotating arm 7, the connecting shaft 5 and the lifting arm 6 to overturn as a whole, and the casting material is dumped into the feed hopper of the hydrogen crushing furnace. After the casting material is fully After the dumping is completed, the movable seat 30 is controlled to reset; when the barrel a is returned to the chute 12 of the discharge seat 2, the lifting arm 6 gradually separates from the flange during the oblique downward movement, and under the reset action of the spring 21, the push arm 19 and the guide rod 18 retreat, and are driven by the rack 20 and the gear 17 to drive the limit seat 16 to rotate in the opposite direction and reset, and the movable arm 9, the pull rod 10 and the hook 11 also return to the initial position, ready for the next feeding, to achieve continuous operation; this device can significantly reduce the labor intensity of the staff and improve the overall operation efficiency and stability.

[0031] Second specific implementation: Based on the first specific implementation, Figure 1 、 Figure 8 and Figure 10As shown, it also includes an electric slide 22, an adjustment frame 23 and a support arm 24. The electric slide 22 is provided on one side of the unloading area of ​​the linear motor 3. The adjustment frame 23 is provided on the slide seat of the electric slide 22. The linear motor 3 is also rotatably connected to the support arm 24 on the side close to the electric slide 22. The support arm 24 is provided with an adjustment slot 25, and the lower end of the adjustment frame 23 is movably sleeved in the adjustment slot 25; it also includes a cylinder 31 for adjusting the conveying angle of the linear motor 3, a slotted swing arm 32 and an adjustment rod 33. A cylinder 31 is installed on the front side of the bottom of the frame 1, and an adjusting rod 33 is provided at the end of the telescopic shaft of the cylinder 31. A slotted swing arm 32 is provided at both ends of the rotating shaft on the upper part of the frame 1, and the adjusting rod 33 is movably passed through the slotted swing arm 32; by controlling the lifting and lowering of the cylinder 31, it can be used to adjust the conveying angle of the linear motor 3, and by controlling the electric slide rail 22 to drive the support arm 24 to swing and adjust the angle, so as to assist in supporting the unloading area of ​​the linear motor 3, adapt to the conveying and unloading requirements under different working conditions, and have strong flexibility.

[0032] Furthermore, during the pouring process of the cast material, the electric slide 22 can be controlled to drive the adjustment frame 23 to move, so that the support arm 24 rests against the feed hopper, providing additional stable support for the unloading area, ensuring stability and reliability during the pouring process. Simultaneously, by controlling the cylinder 31 to drive the adjustment rod 33 to rotate the slotted swing arm 32 and the rotating shaft, the tilt angle of the linear motor 3 can be flexibly adjusted to meet the conveying requirements of different heights. The device has a high degree of overall structural integration and smooth linkage of various movements. It is suitable for continuous and automated operation of sintered NdFeB production lines, which helps reduce labor intensity and improve production efficiency.

[0033] A method for feeding casting sheets for manufacturing sintered NdFeB permanent magnet materials comprises the following steps: S1. Place the barrel a on the unloading seat 2 with a wide upper and narrow lower chute 12 at the bottom of the frame 1, which can achieve accurate and fast positioning; S2. The linear motor 3 is controlled to drive the lifting frame 4 to rise, so that the lifting arm 6 of the U-shaped structure can move obliquely upward and engage with the flange of the upper port of the bucket a, thereby realizing the oblique upward and smooth lifting and conveying of the bucket a; S3. Under the push of barrel a, the pusher drives the rotating shaft 14 to turn the connecting arm 15 and the limit seat 16 toward the side of barrel a through the meshing transmission of the rack 20 and the gear 17, so that the limit seat 16 can just press against the other side of the flange at the upper end of barrel a, so as to achieve double-sided clamping of the end of barrel a and ensure stable and reliable clamping; S4. As the lifting arm 6 is gradually lifted, the pull rod 10 can be tightened to hook and limit the bottom of the barrel a, so as to further improve the stability of the barrel a during flipping and transportation; S5. When transporting the barrel a to the unloading area, the telescopic shaft of the hydraulic cylinder 8 is controlled to shorten, which can pull the rotating arm 7, the connecting shaft 5 and the lifting arm 6 to flip synchronously as a whole, so as to realize the dumping of the casting material in the barrel a into the feed hopper of the hydrogen crushing furnace, that is, completing the smooth and convenient directional transportation and automatic unloading of the casting material filled in the barrel a.

Claims

1. A casting feeding device for manufacturing sintered NdFeB permanent magnet material, comprising a frame (1), a discharge seat (2), and a linear motor (3) capable of rotating and swinging to adjust the conveying angle, the linear motor (3) having a movable seat (30), characterized in that: The movable seat (30) is provided with a positioning assembly for clamping the flange of the upper port of the barrel a. The positioning assembly includes a lifting frame (4), a connecting shaft (5), a lifting arm (6) and a rotating arm (7). The movable seat (30) is fixedly connected to the lifting frame (4). The lower side of the lifting frame (4) is symmetrically connected to the connecting shaft (5). The lifting arm (6) is fixedly connected between the two connecting shafts (5). The rotating arm (7) is also sleeved on the two connecting shafts (5). The lifting frame (4) and the rotating arm (7) are connected to each other. A flip assembly for controlling the rotation angle of the lifting arm (6) is provided, and the flip assembly includes a fixed shaft (40), a hydraulic cylinder (8) and a rotation limiter. A fixed shaft (40) is provided on the upper part of the lifting frame (4), and the hydraulic cylinder (8) is rotatably connected to the fixed shaft (40), and the telescopic shaft end of the hydraulic cylinder (8) is rotatably connected to the end of the rotating arm (7) away from the connecting shaft (5). The lifting arm (6) is also provided with a rotation limiter capable of flipping and swinging, which is used to cooperate with the lifting arm (6) to clamp the other side of the flange of the barrel port a.

2. The casting sheet feeding device for manufacturing sintered NdFeB permanent magnet material according to claim 1, characterized in that: The rotation limiter comprises a rotating shaft (14), a connecting arm (15), a limiting seat (16) and a pushing member. The upper side of the lifting arm (6) is rotatably connected to the rotating shaft (14). One end of the rotating shaft (14) is fixedly connected to the connecting arm (15). One end of the connecting arm (15) away from the rotating shaft (14) is connected to the limiting seat (16). A pushing member is further provided between the lifting arm (6) and the rotating shaft (14) for driving the limiting seat (16) to flip toward the side of the barrel a.

3. The casting sheet feeding device for manufacturing sintered NdFeB permanent magnet material according to claim 2, characterized in that: The pusher includes a gear (17), a guide rod (18), a push arm (19), a rack (20) and a spring (21). The other end of the rotating shaft (14) is connected to the gear (17) through a spline sleeve. A guide rod (18) is provided on one side of the lifting arm (6). One end of the guide rod (18) is connected to the push arm (19). One end of the push arm (19) is connected to the rack (20) meshing with the gear (17). A spring (21) is also provided on the guide rod (18). One end of the spring (21) is connected to the push arm (19) and the other end is connected to the lifting arm (6). When the guide rod (18) is squeezed and moved, it can drive the push arm (19) and the rack (20) to move synchronously, so that the gear (17) can drive the connecting arm (15) and the limit seat (16) to turn over synchronously through the rotating shaft (14) to block the barrel a.

4. The casting sheet feeding device for manufacturing sintered NdFeB permanent magnet material according to claim 3, characterized in that: The lifting arm (6) is provided with a movable arm (9) capable of horizontally sliding and adjusting its position, and the movable arm (9) and the guide rod (18) are kept at the same horizontal position. When the movable arm (9) is squeezed by the barrel a and moves toward the guide rod (18), it can push the guide rod (18) to move synchronously. The middle part of the movable arm (9) is provided with a pull rod (10) movably penetrated, and the lower end of the pull rod (10) is provided with a hook (11) for hooking the convex ring at the bottom of the barrel a to assist the barrel a in smoothly turning over and tipping.

5. The casting sheet feeding device for manufacturing sintered NdFeB permanent magnet material according to claim 4, characterized in that: The discharge seat (2) is provided with an inclined groove (12) which is wide at the top and narrow at the bottom and is used to position the barrel a. An opening (13) is provided on one side of the inclined groove (12) for accommodating the hook (11).

6. The casting sheet feeding device for manufacturing sintered NdFeB permanent magnet material according to claim 1, characterized in that: The utility model further comprises an electric slide rail (22), an adjustment frame (23) and a support arm (24), wherein the electric slide rail (22) is provided on one side of the unloading area of ​​the linear motor (3), the adjustment frame (23) is provided on the slide seat of the electric slide rail (22), and the support arm (24) is rotatably connected to the side of the linear motor (3) close to the electric slide rail (22), and an adjustment slot (25) is provided on the support arm (24), and the lower end of the adjustment frame (23) is movably sleeved in the adjustment slot (25).

7. The casting sheet feeding device for manufacturing sintered NdFeB permanent magnet material according to claim 1, characterized in that: The invention also includes a cylinder (31), a slotted swing arm (32) and an adjusting rod (33). The cylinder (31) is installed on the other side of the bottom of the frame (1). The adjusting rod (33) is provided at the end of the telescopic shaft of the cylinder (31). The two ends of the rotating shaft on the upper part of the frame (1) are respectively provided with a slotted swing arm (32). The adjusting rod (33) is movably provided on the slotted swing arm (32) and is used to adjust the inclination angle of the linear motor (3) for conveying.

8. A method for feeding castings for manufacturing sintered NdFeB permanent magnet materials, based on the device for feeding castings for manufacturing sintered NdFeB permanent magnet materials according to claim 5, characterized in that: The following steps are involved: S1. Place the barrel a on the discharge seat (2) with a wide upper and narrow lower chute (12) at the bottom of the frame (1); S2, by controlling the linear motor (3) to drive the lifting frame (4) to rise, so that the lifting arm (6) can move obliquely upward and be clamped at the flange of the upper port of the barrel a, thereby realizing the oblique upward and smooth lifting and conveying of the barrel a; S3, under the push of the barrel a, the pusher drives the rotating shaft (14) to drive the connecting arm (15) and the limit seat (16) to flip toward the side of the barrel a through the meshing transmission of the rack (20) and the gear (17), so that the limit seat (16) can just be pressed against the other side of the flange at the upper end of the barrel a, so as to achieve double-sided clamping of the end of the barrel a and ensure stable and reliable clamping; S4. As the lifting arm (6) is gradually lifted, the pull rod (10) can be tightened to hook and limit the bottom of the barrel a, so as to further improve the stability of the barrel a during the turning and transportation process; S5. When the barrel a is transported to the unloading area, the telescopic shaft of the hydraulic cylinder (8) is controlled to shorten, which can pull the rotating arm (7), the connecting shaft (5) and the lifting arm (6) to turn over synchronously as a whole, so as to realize the dumping of the casting material in the barrel a into the feed hopper of the hydrogen crushing furnace.

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