A molding device for neodymium iron boron processing

Abstract

The application relates to the neodymium iron boron processing technical field and discloses a profiling device for neodymium iron boron processing, which comprises a processing box, the inside of the processing box is closed and filled with inert gas, a feeding mechanism, a hydraulic cylinder one, a displacement mechanism, a jacking mechanism, a vibrating mechanism, a discharging mechanism and a collecting mechanism are arranged in the processing box, the displacement mechanism comprises a displacement disc rotatably arranged in the inside of the processing box, a plurality of die cylinders are arranged on the displacement disc, the displacement disc drives the die cylinders to sequentially pass below the feeding mechanism, the vibrating mechanism, the hydraulic cylinder one and the discharging mechanism, the feeding mechanism sends neodymium iron boron powder into the die cylinders, the vibrating mechanism drives the die cylinders to vibrate, the hydraulic cylinder one presses and shapes the neodymium iron boron powder in the die cylinders, and the discharging mechanism transfers the shaped neodymium iron boron into the collecting mechanism; through the cooperation of the multiple mechanisms, the problems of low efficiency and unstable quality in the existing neodymium iron boron profiling processing are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of neodymium iron boron (NdFeB) processing technology, specifically to a pressing device for NdFeB processing. Background Technology

[0002] Neodymium iron boron (NdFeB) permanent magnets are among the highest-performing permanent magnets currently available. In their production, the molding equipment is the core component, transforming NdFeB powder into a blank with a specific shape and density. A magnetic field is required to orient the powder. By applying external pressure, the NdFeB powder particles are displaced, deformed, and interlocked, ultimately eliminating porosity between particles and forming a blank with uniform density and a certain strength. Since NdFeB powder particles exhibit magnetic anisotropy, an external magnetic field must be applied during the molding process to align the "easily magnetized direction" of the powder particles along the magnetic field direction. The more uniform the orientation, the higher the remanence and maximum energy product of the magnet after sintering.

[0003] In existing NdFeB molding processes, manual or semi-automatic equipment is typically required to load NdFeB powder into a mold, and then a press is used to apply pressure to complete the molding. The molds in existing molding equipment are fixed, requiring the feeding mechanism, molding mechanism, lifting mechanism, and discharging mechanism to work alternately to complete the entire molding process. When the level of automation is low, the feeding, molding, and discharging processes are not well connected, resulting in low processing efficiency. In a fully automated process, each mechanism needs to move alternately above the mold, which increases the number of moving mechanisms, leading to increased costs, but with limited improvement in processing efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a forming device for neodymium iron boron processing.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a pressing device for processing neodymium iron boron powder, comprising a processing box, the inside of the processing box being sealed and filled with inert gas, and a feeding mechanism for conveying neodymium iron boron powder and a hydraulic cylinder for pressing neodymium iron boron powder inside the processing box.

[0006] The processing box is also equipped with a displacement mechanism, a lifting mechanism, a vibration mechanism, a discharge mechanism, and a collection mechanism. The displacement mechanism includes a displacement plate that rotates inside the processing box. The displacement plate has multiple mold cylinders. The displacement plate drives the mold cylinders to pass sequentially under the feeding mechanism, the vibration mechanism, the first hydraulic cylinder, and the discharge mechanism. The feeding mechanism feeds NdFeB powder into the mold cylinders. The vibration mechanism drives the mold cylinders to vibrate. The first hydraulic cylinder presses the NdFeB powder inside the mold cylinders into shape. The discharge mechanism transfers the formed NdFeB to the collection mechanism. The lifting mechanism includes a lifting platform. The lifting platform pushes the mold cylinders at different positions to lift them to different heights and ejects the pressed NdFeB from the mold cylinders.

[0007] As an improvement: a piston block is slidably provided at the through hole inside the mold cylinder, a through hole is provided at the bottom of the mold cylinder, a limiting strip is provided on the outside of the mold cylinder to limit the groove at the through hole of the displacement plate, a guide strip with a radius smaller than the through hole of the displacement plate is provided on the outer bottom of the mold cylinder, and a guide strip connected to the limiting strip is provided on the outer side of the outer bottom of the mold cylinder.

[0008] As an improvement: the lifting mechanism also includes a second hydraulic cylinder. The output end of the second hydraulic cylinder pushes the lifting platform to move up and down inside the processing box. The top of the lifting platform is provided with a top platform, a second top platform, a bearing platform and a push rod below the feeding mechanism, the vibration mechanism, the first hydraulic cylinder and the discharge mechanism. The push rod passes through the bottom through hole of the mold cylinder and cooperates with the piston block.

[0009] As an improvement: the feeding mechanism includes a material box and a feeding cylinder. The bottom of the material box is provided with a feeding pipe that communicates with the feeding cylinder. A valve is provided on the feeding pipe. A cylinder is provided at the top of the feeding cylinder. A push plate that slides inside the feeding cylinder is provided at the output end of the cylinder. After the top platform pushes the mold cylinder to contact the bottom of the feeding cylinder, the push plate pushes the neodymium iron boron powder into the mold cylinder.

[0010] As an improvement: the vibration mechanism includes a housing, on which a second motor and a turntable are provided. The second motor drives the turntable to rotate inside the housing. An inclined plate is provided at the bottom of the turntable. A fixed platform is provided inside the housing. An abutment plate is provided at the bottom of the fixed platform. A groove is provided at the top of the abutment plate. A rotating ball is rotatably provided on the groove. A movable rod is provided at the top of the rotating ball. The top of the movable rod contacts and engages with the bottom of the inclined plate. A circular plate is provided on the movable rod. A spring connected to the fixed platform is provided on the circular plate.

[0011] As an improvement: the housing is provided with a material box II, the bottom of the material box II is provided with a feeding pipe, the fixed cylinder is provided at the center of the fixed platform, the turntable and the fixed cylinder rotate together, the feeding pipe passes through the through hole of the fixed cylinder and is connected to the fixed cylinder, the feeding pipe is provided with a valve II, the top platform II is provided with a pressure sensor, and a weighing plate is provided above the pressure sensor.

[0012] As an improvement: the processing box is equipped with a cylinder, the output end of the cylinder is equipped with a pad, the processing box is equipped with a guide groove platform that slides with the pad, the bottom of the support platform is equipped with a slot that inserts with the pad, the top of the support platform is equipped with a top block, the top block passes through the bottom through hole of the mold cylinder and contacts the piston block, and the top of the support platform is equipped with an electromagnetic coil sleeved on the outside of the mold cylinder.

[0013] As an improvement: the discharge mechanism includes a hanger, a movable platform is slidably provided at the bottom of the hanger, a connecting rod is hinged to the bottom of the movable platform, a clamp is provided at the bottom of the connecting rod, a cylinder is provided on the movable platform, a transmission platform is provided at the output end of the cylinder, a connecting rod is hinged between the transmission platform and the connecting rod, and a collecting mechanism includes a fixed frame, a loading platform is slidably provided on the inner side of the fixed frame, and a conveyor belt is provided on the loading platform.

[0014] The advantages of this invention compared to existing technologies are as follows: This invention effectively solves the problems of low efficiency and unstable quality in existing NdFeB molding processes through the coordinated operation of multiple mechanisms. It avoids powder oxidation by using a closed inert gas environment, achieves continuous operation of multiple mold cylinders through a displacement mechanism, and combines precise coordination of feeding, vibration, molding, and discharging mechanisms to realize fully automated processing from powder to finished product. This significantly improves processing efficiency and product quality while reducing errors caused by manual intervention, making it suitable for large-scale production. Specifically:

[0015] 1. The displacement mechanism drives multiple mold cylinders through each processing stage in sequence, realizing simultaneous operation of multiple processes and significantly improving processing efficiency;

[0016] 2. The vibration mechanism uses mechanical vibration to make the powder in the mold cylinder evenly distributed. Combined with the feeding structure, it achieves accurate weighing, ensuring that the powder is sufficient and dense before molding, thus improving the molding quality.

[0017] 3. The lifting mechanism and the pad block structure work together to provide stable support for the mold cylinder during molding, preventing deformation under stress. Combined with the magnetic field of the electromagnetic coil, the powder can be aligned along the magnetic field direction, improving molding accuracy.

[0018] 4. The unloading mechanism uses mechanical clamping and precise transfer, combined with the orderly collection mechanism, to avoid damage to the molded products during the transfer process and ensure product integrity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the main structure of the present invention. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the main structure of the present invention. Figure 2 .

[0022] Figure 4 This is a cross-sectional view of the present invention. Figure 1 .

[0023] Figure 5 This is a cross-sectional view of the present invention. Figure 2 .

[0024] Figure 6 This is a cross-sectional view of the feeding mechanism of the present invention.

[0025] Figure 7 This is a schematic diagram of the displacement mechanism and lifting mechanism of the present invention.

[0026] Figure 8 This is a cross-sectional view of the displacement mechanism and lifting mechanism of the present invention. Figure 1 .

[0027] Figure 9 This is a cross-sectional view of the displacement mechanism and lifting mechanism of the present invention. Figure 2 .

[0028] Figure 10 This is a schematic diagram of the structure of the mold cylinder of the present invention.

[0029] Figure 11 This is a cross-sectional view of the pad block of the present invention.

[0030] Figure 12 This is an exploded view of the vibration mechanism of the present invention.

[0031] Figure 13 This is a cross-sectional view of the vibration mechanism of the present invention.

[0032] Figure 14 This is a schematic diagram of the material discharge mechanism of the present invention.

[0033] Figure 15 This is an exploded view of the collection mechanism of this invention.

[0034] As shown in the figure: 1. Processing box; 2. Feeding mechanism; 3. Positioning mechanism; 4. Lifting mechanism; 5. Vibration mechanism; 6. Hydraulic cylinder one; 7. Discharge mechanism; 8. Collection mechanism; 11. Inlet sealing cover; 12. Outlet sealing cover; 13. Guide groove platform; 14. Cylinder one; 15. Pad block; 21. Material box one; 22. Valve one; 23. Feeding pipe; 24. Feeding cylinder; 25. Cylinder two; 26. Push plate 31. Motor 1; 311. Gear 1; 32. Drive shaft; 321. Gear 2; 33. Positioning plate; 34. Mold cylinder; 341. Limiting strip; 342. Guide strip; 35. Piston block; 41. Hydraulic cylinder 2; 42. Lifting platform; 43. Top platform 1; 431. Vent hole; 44. Top platform 2; 441. Pressure sensor; 442. Weighing plate; 45. Support platform; 451. Top block; 45 2. Slot; 453. Electromagnetic coil; 46. Push rod; 51. Housing; 52. Material box two; 521. Valve two; 522. Feeding pipe; 53. Motor two; 531. Gear three; 54. Turntable; 541. Gear four; 542. Inclined plate; 55. Fixed platform; 551. Fixed cylinder; 56. Abutment plate; 561. Slot platform; 57. Rotating ball; 571. Movable rod; 572. Circular plate; 573. 61. Spring; 72. Pressure table; 73. Hanger; 74. Motor 3; 75. Threaded column 1; 76. Moving table; 77. Cylinder 3; 78. Transmission table; 79. Connecting rod 1; 80. Clamping table; 81. Connecting rod 2; 82. Fixing frame; 83. Carrying platform; 84. Slider; 85. Support plate; 86. Baffle; 87. Motor 4; 88. Threaded column 2; 89. Conveyor belt; 80. Motor 5. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings.

[0036] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 5 As shown, to solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a molding device for NdFeB processing, comprising a processing box 1, the processing box 1 being sealed and filled with inert gas, the processing box 1 being provided with a feeding mechanism 2 for conveying NdFeB powder and a hydraulic cylinder 6 for molding the NdFeB powder, the processing box 1 also being provided with a displacement mechanism 3, a lifting mechanism 4, a vibration mechanism 5, a discharge mechanism 7 and a collection mechanism 8, the processing box 1 being hinged with an inlet sealing cover 11 and a discharge sealing cover 12 at the feeding mechanism 2 and the collection mechanism 8 respectively, the displacement mechanism 3 including a displacement mechanism rotatably disposed inside the processing box 1. The plate 33 has multiple mold cylinders 34. The plate 33 drives the mold cylinders 34 to pass under the feeding mechanism 2, vibration mechanism 5, hydraulic cylinder 6 and discharge mechanism 7 in sequence. The feeding mechanism 2 feeds NdFeB powder into the mold cylinder 34. The vibration mechanism 5 drives the mold cylinder 34 to vibrate. The hydraulic cylinder 6 presses the NdFeB powder inside the mold cylinder 34 into shape. The discharge mechanism 7 transfers the formed NdFeB to the collection mechanism 8. The lifting mechanism 4 includes a lifting platform 42. The lifting platform 42 pushes the mold cylinders 34 at different positions to lift them to different heights and ejects the pressed NdFeB from the mold cylinders 34.

[0037] To address the technical problems of unstable molding quality and low processing efficiency in NdFeB processing, the molding device of this invention effectively isolates air from contact with NdFeB powder by setting up a processing box 1 that is internally sealed and filled with inert gas, thus preventing powder oxidation and ensuring processing quality. At the same time, with the coordinated cooperation of various mechanisms, the automated continuous processing of NdFeB powder from feeding to molding to discharging is realized, which greatly improves processing efficiency.

[0038] Its working principle is as follows: During processing, neodymium iron boron powder is first added to the feeding mechanism 2 through the infeed sealing cover 11. After the infeed sealing cover 11 is closed, the inside of the processing box 1 remains sealed and filled with inert gas. The displacement plate 33 of the displacement mechanism 3 rotates, driving multiple mold cylinders 34 on it to rotate sequentially. When the mold cylinder 34 moves to below the feeding mechanism 2, the lifting platform 42 pushes the mold cylinder 34 at that position to a suitable height, and the feeding mechanism 2 accurately feeds the neodymium iron boron powder into the mold cylinder 34. Subsequently, the mold cylinder 34 rotates to below the vibration mechanism 5, and the lifting platform 42 of the lifting mechanism 4 moves again. The vibration mechanism 5 drives the mold cylinder 34 to vibrate, making the neodymium iron boron powder inside more evenly distributed, laying a good foundation for subsequent molding. Then, the mold cylinder 3... 4. The mechanism continues to operate below the hydraulic cylinder 6, and the lifting platform 42 of the lifting mechanism 4 operates again so that the hydraulic cylinder 6 can press and shape the NdFeB powder inside the mold cylinder 34. After the pressing is completed, the mold cylinder 34 operates below the discharge mechanism 7, and the lifting platform 42 of the lifting mechanism 4 operates again to push the pressed NdFeB out of the mold cylinder 34. The discharge mechanism 7 then transfers the ejected NdFeB to the collection mechanism 8. The formed NdFeB can be taken out of the collection mechanism 8 by opening the discharge sealing cover 12. During this process, because multiple mold cylinders 34 are used, when the displacement plate 33 rotates, the feeding mechanism 2, the vibration mechanism 5, the hydraulic cylinder 6, and the discharge mechanism 7 work simultaneously. The whole process is smooth and orderly, realizing efficient and high-quality processing of NdFeB.

[0039] Combined with appendix Figure 8 and attached Figure 10 As shown, a piston block 35 is slidably provided at the through hole inside the mold cylinder 34, a through hole is provided at the bottom of the mold cylinder 34, a limiting strip 341 is provided on the outside of the mold cylinder 34 to limit and cooperate with the groove at the through hole of the displacement plate 33, a radius smaller than the through hole of the displacement plate 33 is provided at the bottom of the outer side of the mold cylinder 34, and a guide strip 342 connected to the limiting strip 341 is provided on the outer side of the bottom of the mold cylinder 34.

[0040] Combined with appendix Figure 7 Appendix Figure 8 and attached Figure 9 As shown, the displacement mechanism 3 also includes a motor 31 and a drive shaft 32. The output end of the motor 31 is provided with a gear 311, and the bottom of the drive shaft 32 is provided with a gear 321 that meshes with the gear 311. The top of the drive shaft 32 passes through the shaft through hole of the lifting platform 42 and is connected to the displacement plate 33.

[0041] Combined with appendix Figure 7 Appendix Figure 8 and attached Figure 9As shown, the lifting mechanism 4 also includes a second hydraulic cylinder 41. The output end of the second hydraulic cylinder 41 pushes the lifting platform 42 to move up and down inside the processing box 1. The top of the lifting platform 42 is provided with a first top platform 43, a second top platform 44, a support platform 45 and a push rod 46 below the feeding mechanism 2, the vibration mechanism 5, the first hydraulic cylinder 6 and the discharge mechanism 7, respectively. The push rod 46 passes through the bottom through hole of the mold cylinder 34 and cooperates with the piston block 35.

[0042] To address issues such as inaccurate positioning of the mold cylinder 34 during processing, height adjustment of the mold cylinder 34 at different processing stages, and inconvenience in ejecting NdFeB after molding, the displacement mechanism 3 achieves precise operation and positioning of the mold cylinder 34 through motor drive and gear transmission. The lifting mechanism 4 uses hydraulic cylinders to push different lifting components to meet the height requirements of the mold cylinder 34 at various processing positions and the ejection operation of NdFeB, ensuring a stable and efficient processing process.

[0043] The working principle of the displacement mechanism 3 is as follows: When the motor 31 starts, the gear 311 at its output end rotates, which drives the gear 321 meshing with it to rotate, thereby causing the drive shaft 32 to rotate. The top of the drive shaft 32 is connected to the displacement plate 33, thereby driving the displacement plate 33 to rotate. The mold cylinder 34 on the displacement plate 33 is limited by the outer limit strip 341 and the groove at the through hole of the displacement plate 33, ensuring that the mold cylinder 34 will not deviate when it rotates with the displacement plate 33. Under the drive of the displacement mechanism 3, the mold cylinder 34 can accurately pass under the feeding mechanism 2, the vibration mechanism 5, the hydraulic cylinder 6 and the discharge mechanism 7 in sequence.

[0044] The working principle of the lifting mechanism 4 is as follows: Hydraulic cylinder 41 is activated, and its output pushes the lifting platform 42 to move up and down inside the processing box 1. When the mold cylinder 34 moves below the feeding mechanism 2, the top platform 43 of the lifting platform 42 rises, pushing the mold cylinder 34 at that position to a suitable height, facilitating precise feeding by the feeding mechanism 2. When the mold cylinder 34 moves below the vibration mechanism 5, the top platform 44 rises, pushing the mold cylinder 34 to a height suitable for the operation of the vibration mechanism 5, cooperating with the vibration mechanism 5 to achieve uniform powder distribution. At this time, the limiting strip 341 is above the through hole of the displacement plate 33, making... The mold cylinder 34, which has risen to a certain height, can sway. The guide strip 342 at the bottom of the mold cylinder 34 facilitates the smooth descent of the mold cylinder 34. When the mold cylinder 34 moves to below the hydraulic cylinder 6, the support platform 45 rises, raising the mold cylinder 34 to the height that the hydraulic cylinder 6 can easily press, ensuring the smooth progress of the pressing operation. When the mold cylinder 34 moves to below the discharge mechanism 7, the push rod 46 rises, passes through the through hole at the bottom of the mold cylinder 34, and cooperates with the piston block 35, pushing the piston block 35 upward to push the pressed neodymium iron boron out of the mold cylinder 34 so that the discharge mechanism 7 can transfer it.

[0045] Combined with appendix Figure 2 and attached Figure 6 As shown, the feeding mechanism 2 includes a material box 21 and a feeding cylinder 24. The bottom of the material box 21 is provided with a feeding pipe 23 that communicates with the feeding cylinder 24. A valve 22 is provided on the feeding pipe 23. A cylinder 25 is provided on the top of the feeding cylinder 24. A push plate 26 that slides inside the feeding cylinder 24 is provided at the output end of the cylinder 25. After the top platform 43 pushes the mold cylinder 34 to contact the bottom of the feeding cylinder 24, the push plate 26 pushes the neodymium iron boron powder into the mold cylinder 34. A vent hole 431 is provided at the bottom of the mold cylinder 34.

[0046] To address issues such as uneven feeding of NdFeB powder and powder leakage due to loose connection between the powder and the mold cylinder 34 during feeding, the feeding mechanism 2 achieves tight connection through material bin storage, valve control of feeding amount, cylinder-driven feeding, and cooperation with the lifting mechanism 4, ensuring that the powder is stably fed into the mold cylinder 34.

[0047] The working principle of the feeding mechanism 2 is as follows: Material bin 21 stores NdFeB powder. When the displacement mechanism 3 drives the mold cylinder 34 to rotate below the feeding mechanism 2, the top platform 43 of the lifting mechanism 4 rises, pushing the mold cylinder 34 upwards until it contacts the bottom of the feeding cylinder 24, achieving a tight connection and preventing powder leakage during feeding. At this time, valve 22 on the feeding pipe 23 opens, and the NdFeB powder in material bin 21 enters the feeding cylinder 24 through the feeding pipe 23. Valve 22 can control the amount of powder entering the feeding cylinder 24 as needed. At the end of the feeding process, the piston block 35 is at the top of the mold cylinder 34 due to the lifting during material discharge. The piston block 35 will not slide down automatically. The cylinder 25 at the top of the feeding cylinder 24 is activated, and its output end pushes the push plate 26 to slide downward inside the feeding cylinder 24. The neodymium iron boron powder in the feeding cylinder 24 pushes the piston block 35 down and pushes the neodymium iron boron powder into the mold cylinder 34. The ventilation hole 431 at the bottom of the mold cylinder 34 can balance the air pressure at the bottom of the mold cylinder 34 during the feeding process, prevent the powder from entering smoothly due to air pressure problems, and ensure that the feeding process is smooth and efficient.

[0048] Combined with appendix Figure 12 Appendix Figure 13 As shown, the vibration mechanism 5 includes a housing 51, on which a second motor 53 and a turntable 54 are mounted. The output end of the second motor 53 is provided with a third gear 531, and the turntable 54 is provided with a fourth gear that meshes with the third gear 531. The second motor 53 drives the turntable 54 to rotate inside the housing 51. The bottom of the turntable 54 is provided with an inclined plate 542. The housing 51 is provided with a fixed platform 55. The bottom of the fixed platform 55 is provided with an abutment plate 56, and the top of the abutment plate 56 is provided with a groove platform 561. A rotating ball 57 is rotatably mounted on the groove platform 561, and a movable rod 571 is provided on the top of the rotating ball 57. The top of the movable rod 571 contacts and engages with the bottom of the inclined plate 542. A circular plate 572 is provided on the movable rod 571, and a spring 573 connected to the fixed platform 55 is provided on the circular plate 572.

[0049] Combined with appendix Figure 9 Appendix Figure 12 and attached Figure 13 As shown, the housing 51 is provided with a second material box 52, the bottom of the second material box 52 is provided with a feeding pipe 522, the fixed platform 55 is provided with a fixed cylinder 551 at the axis, the turntable 54 is rotatably engaged with the fixed cylinder 551, the feeding pipe 522 passes through the through hole of the fixed cylinder 551 and is connected to the fixed cylinder 551, the feeding pipe 522 is provided with a second valve 521, the top platform 44 is provided with a pressure sensor 441, and a weighing plate 442 is provided above the pressure sensor 441.

[0050] To address the issue of uneven distribution of NdFeB powder within the mold cylinder 34 affecting molding quality, and to resolve the problem of inaccurate feeding caused by rapid feeding in the feeding mechanism 2, the vibration mechanism 5 uses a motor to drive the turntable 54 to rotate, causing the movable rod 571 to move up and down and generate vibration. At the same time, it combines the pressure sensor 441 and the weighing plate 442 to achieve accurate weighing, ensuring that the powder in the mold cylinder 34 is uniform and sufficient.

[0051] The working principle of the vibration mechanism 5 is as follows: When the mold cylinder 34 is driven to the bottom of the vibration mechanism 5 by the displacement mechanism 3, the top platform 44 of the lifting mechanism 4 rises, pushing the mold cylinder 34 to the position corresponding to the vibration mechanism 5. At this time, the weighing plate 442 contacts the bottom of the mold cylinder 34, and the pressure sensor 441 can detect the weight of the mold cylinder 34 and the powder inside; the motor 53 starts, and the gear 531 at its output end rotates, driving the gear 541 meshing with it to rotate, thereby driving the turntable 54 to rotate on the fixed cylinder 551 inside the housing 51; the inclined plate 542 at the bottom of the turntable 54 rotates with the turntable 54 and contacts the top of the movable rod 571. Due to the inclined setting of the inclined plate 542, the movable rod 571 will be pushed up and down; the movable rod 5 The circular plate 572 on 71 moves accordingly, causing the spring 573 to be continuously compressed and stretched. Under the elastic force of the spring 573, the movement of the movable rod 571 becomes more regular, and the rotating ball 57 at its bottom rotates on the slot platform 561, reducing motion friction. The up and down movement of the movable rod 571 is transmitted to the abutment plate 56, which ultimately drives the mold cylinder 34 to vibrate, making the NdFeB powder inside evenly distributed. If the pressure sensor 441 detects that the amount of powder in the mold cylinder 34 is insufficient, the valve 521 on the feeding pipe 522 at the bottom of the material box 52 opens, and the powder is replenished into the mold cylinder 34 through the feeding pipe 522 and the fixed cylinder 551 until the weighing plate 442 reaches the preset weight. Then the valve 521 closes, completing the precise feeding and ensuring the smooth progress of subsequent molding work.

[0052] Combined with appendix Figure 4 Appendix Figure 8 and attached Figure 11As shown, the processing box 1 is equipped with a cylinder 14, and the output end of the cylinder 14 is equipped with a pad 15. The processing box 1 is equipped with a guide groove platform 13 that slides with the pad 15. The bottom of the support platform 45 is equipped with a slot 452 that inserts with the pad 15. The top of the support platform 45 is equipped with a top block 451. The top block 451 passes through the bottom through hole of the mold cylinder 34 and contacts the piston block 35. The top of the support platform 45 is equipped with an electromagnetic coil 453 that is sleeved on the outside of the mold cylinder 34. The output end of the hydraulic cylinder 6 is equipped with a pressure platform 61. The pressure platform 61 extends into the through hole of the mold cylinder 34 to press the neodymium iron boron into shape.

[0053] To address the issue of insufficient support stability of the bearing platform 45 during the pressing process, which could lead to damage to the mold cylinder 34 and the bearing platform 45 due to pressure during pressing, thereby affecting the pressing accuracy of NdFeB, the pad block 15, in cooperation with the cylinder 14, the guide groove platform 13 and the bearing platform 45, provides additional support for the bearing platform 45, enhancing the overall stability during pressing and ensuring the pressing quality.

[0054] Its working principle is as follows: When the mold cylinder 34 rotates to below the hydraulic cylinder 6, the hydraulic cylinder 41 of the lifting mechanism 4 pushes the lifting platform 42 to rise, so that the bearing platform 45 drives the mold cylinder 34 to the forming position, causing the top of the mold cylinder 34 to disengage from the displacement plate 33. At the same time, the top block 451 provides support for the piston block 35. The cylinder 14 inside the processing box 1 is activated, and its output end pushes the pad 15 to slide along the guide groove platform 13 until the pad 15 is precisely inserted into the slot 452 at the bottom of the bearing platform 45. At this time, the pad 15 forms a stable connection with the support platform 45, providing solid support for the support platform 45. This ensures that the mold cylinder 34 remains stable when the pressure plate 61 of the hydraulic cylinder 6 extends into its through hole for pressing, preventing the mold cylinder 34 and the support platform 45 from being directly subjected to pressure and damaged during the pressing process. The pressure applied by the pressure plate 61 is borne by the piston block 35, the top block 451, the support platform 45, the pad 15, and the solid platform inside the processing box 1, avoiding the radial pressure being directly borne by the displacement plate 33, the mold cylinder 34, and the lifting platform 42.

[0055] Meanwhile, the electromagnetic coil 453 on the top of the support platform 45 is sleeved on the outside of the mold cylinder 34 as the support platform 45 rises. The coil is energized to generate a magnetic field with a set specific strength and direction. The powder particles rotate under the action of the magnetic field force and are arranged along the direction of the magnetic field to ensure that the neodymium iron boron powder is pressed into shape accurately and uniformly. After the pressing is completed, the cylinder 14 drives the pad 15 to exit from the slot 452, making room for the support platform 45 to descend with the lifting platform 42, without affecting the subsequent operation of the mold cylinder 34.

[0056] Combined with appendix Figure 5 and attached Figure 14As shown, the discharge mechanism 7 includes a hanger 71, a movable platform 74 that slides laterally at the bottom of the hanger 71, a motor 72 on the hanger 71, a threaded post 73 at the output end of the motor 72, a threaded hole on the movable platform 74 that mates with the threaded post 73, a connecting rod 77 hinged to the bottom of the movable platform 74, a clamping platform 78 at the bottom of the connecting rod 77, a cylinder 75 on the movable platform 74, a transmission platform 76 at the output end of the cylinder 75, and a connecting rod 79 hinged between the transmission platform 76 and the connecting rod 77.

[0057] To address the challenges of accurately transferring the molded NdFeB magnets from the mold cylinder 34 to the collection mechanism 8, and the potential damage to the products due to unstable clamping during the transfer process, the discharge mechanism 7 is driven by a motor to move laterally. This, in conjunction with a cylinder, drives a linkage mechanism to open and close the clamping platform 78 and adjust its posture, thereby achieving stable clamping and precise transfer of the molded NdFeB magnets.

[0058] Its working principle is as follows: When the lifting mechanism 4's push rod 46 pushes the formed NdFeB out of the mold cylinder 34, the motor 3 72 starts, and its output end drives the threaded column 1 73 to rotate. The moving table 74, through its threaded hole, cooperates with the threaded column 1 73 and slides laterally along the bottom of the hanger 71, so that the clamping table 78 moves to the position of the ejected NdFeB. Then, the cylinder 3 75 starts, and its output end pulls the transmission table 76 upward. The transmission table 76 drives the connecting rod 1 77 to rotate through the hinged connecting rod 2 79, so that the clamping table 78 approaches the formed NdFeB and clamps it firmly. After that, the motor 3 72 drives the threaded column 1 73 to rotate again, so that the moving table 74 drives the clamped NdFeB to move laterally to the top of the collecting mechanism 8. The cylinder 3 75 actuates to open the clamping table 78 and place the NdFeB into the collecting mechanism 8, completing the material transfer process. The entire process ensures that the NdFeB is stable and accurately positioned during the transfer process through the precise cooperation of the mechanical structure.

[0059] Since the mold cylinder 34 is placed in the through hole of the displacement plate 33, when the push rod 46 of the lifting mechanism 4 pushes the molded neodymium iron boron out of the mold cylinder 34, it will bring the mold cylinder 34 out of the through hole of the displacement plate 33. To avoid this problem, a limiting baffle fixed to the processing box 1 can be set at this position to prevent the mold cylinder 34 from moving upward, or the clamping table 78 can be moved above the mold cylinder 34 in advance, and the mold cylinder 34 can be prevented from moving upward by the bottom of the clamping table 78. After the molded neodymium iron boron is pushed out of the mold cylinder 34 by the push rod 46, the piston block 35 inside the mold cylinder 34 is lifted to the top of the through hole of the mold cylinder 34 by the push rod 46. The frictional resistance between the piston block 35 and the through hole of the mold cylinder 34 makes the piston block 35 not fall down automatically. It needs to be reset by the push of the cylinder 25 of the feeding mechanism 2.

[0060] A negative pressure adsorption structure fixed to the moving stage 74 can be set on the rear or sides of the clamping platform 78 to clean the unpressed NdFeB powder on the mold cylinder 34 and piston block 35.

[0061] Combined with appendix Figure 5 and attached Figure 15 As shown, the collection mechanism 8 includes a fixed frame 81, a platform 82 that slides up and down on the inner side of the fixed frame 81, sliders 821 that slide and cooperate with the inner groove of the fixed frame 81 on both sides of the platform 82, a motor 83 on the fixed frame 81, a threaded post 84 at the output end of the motor 83, a threaded hole on one of the sliders 821 that cooperates with the threaded post 84, a conveyor belt 85 and a motor 86 that drives the conveyor belt 85 to rotate on the platform 82, baffles 823 on both sides of the platform 82, and a support plate 822 that extends into the gap of the conveyor belt 85 on the platform 82.

[0062] To address issues such as displacement, uneven stacking, and difficulty in flexibly adjusting the bearing height of NdFeB magnets during collection, the collection mechanism 8 uses a motor to drive the platform 82 to move up and down to accommodate different collection volumes. It also utilizes a conveyor belt 85 in conjunction with baffles 823 to achieve orderly transport and sorting of NdFeB magnets, ensuring a stable and orderly collection process.

[0063] Its working principle is as follows: When the discharge mechanism 7 places the formed NdFeB into the conveyor belt 85, the baffles 823 on both sides of the platform 82 prevent the NdFeB from slipping off the sides during the conveying process, while the support plate 822 extending into the gap of the conveyor belt 85 provides stable support for the NdFeB on the conveyor belt 85, preventing it from tilting or falling due to the gap of the conveyor belt 85; the motor 86 starts, driving the conveyor belt 85 to rotate, conveying the NdFeB to one side of the platform 82 to achieve orderly arrangement; as the number of NdFeB on the conveyor belt increases, the motor 83 starts. Its output end drives the threaded column 84 to rotate, and the slider 821 that cooperates with the threaded column 84 moves the platform 82 downward along the sliding groove on the inner side of the fixed frame 81, so that the platform 82 is always kept at a suitable height for the discharge mechanism 7 to place NdFeB, realizing the stacking effect and avoiding the NdFeB from being unstable or misplaced due to excessive stacking; when it is necessary to take out the collected NdFeB, it can be driven in reverse by the motor 83 to raise the platform 82 to a height that is easy to operate. The whole process achieves efficient and neat collection of NdFeB through the coordinated cooperation of various components.

[0064] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pressing device for processing neodymium iron boron (NdFeB) powder, comprising a processing box (1), the processing box (1) being sealed and filled with inert gas, the processing box (1) being provided with a feeding mechanism (2) for conveying NdFeB powder and a hydraulic cylinder (6) for pressing the NdFeB powder, characterized in that: The processing box (1) is also equipped with a displacement mechanism (3), a lifting mechanism (4), a vibration mechanism (5), a discharge mechanism (7), and a collection mechanism (8). The displacement mechanism (3) includes a displacement plate (33) that is rotatably located inside the processing box (1). The displacement plate (33) is equipped with multiple mold cylinders (34). The displacement plate (33) drives the mold cylinders (34) to pass under the feeding mechanism (2), the vibration mechanism (5), the hydraulic cylinder (6), and the discharge mechanism (7) in sequence. The structure (2) sends NdFeB powder into the mold cylinder (34), the vibration mechanism (5) drives the mold cylinder (34) to vibrate, the hydraulic cylinder (6) presses the NdFeB powder inside the mold cylinder (34) into shape, the discharge mechanism (7) transfers the formed NdFeB to the collection mechanism (8), the lifting mechanism (4) includes a lifting platform (42), the lifting platform (42) pushes the mold cylinder (34) at different positions to lift to different heights and ejects the pressed NdFeB from the mold cylinder (34); A piston block (35) is slidably provided at the through hole inside the mold cylinder (34). A through hole is provided at the bottom of the mold cylinder (34). A limiting strip (341) is provided on the outside of the mold cylinder (34) to limit the groove at the through hole of the displacement plate (33). A through hole with a radius smaller than that of the displacement plate (33) is provided at the bottom outside of the mold cylinder (34). A guide strip (342) connected to the limiting strip (341) is provided on the outside of the bottom outside of the mold cylinder (34). The lifting mechanism (4) also includes a second hydraulic cylinder (41). The output end of the second hydraulic cylinder (41) pushes the lifting platform (42) to move up and down inside the processing box (1). The top of the lifting platform (42) is provided with a top platform (43), a second top platform (44), a bearing platform (45) and a top rod (46) below the feeding mechanism (2), the vibration mechanism (5), the first hydraulic cylinder (6) and the discharge mechanism (7). The top rod (46) passes through the bottom through hole of the mold cylinder (34) and cooperates with the piston block (35). The feeding mechanism (2) includes a material box (21) and a feeding cylinder (24). The bottom of the material box (21) is provided with a feeding pipe (23) that communicates with the feeding cylinder (24). The feeding pipe (23) is provided with a valve (22). The top of the feeding cylinder (24) is provided with a cylinder (25). The output end of the cylinder (25) is provided with a push plate (26) that slides inside the feeding cylinder (24). After the top platform (43) pushes the mold cylinder (34) to contact the bottom of the feeding cylinder (24), the push plate (26) pushes the neodymium iron boron powder into the mold cylinder (34). The discharge mechanism (7) includes a hanger (71), a movable platform (74) is provided at the bottom of the hanger (71) and a connecting rod (77) is hinged at the bottom of the movable platform (74), a clamping platform (78) is provided at the bottom of the connecting rod (77), a cylinder (75) is provided on the movable platform (74), a transmission platform (76) is provided at the output end of the cylinder (75), and a connecting rod (79) is hinged between the transmission platform (76) and the connecting rod (77). The collection mechanism (8) includes a fixed frame (81), a loading platform (82) is provided on the inner side of the fixed frame (81) and a conveyor belt (85) is provided on the loading platform (82).

2. The forming device for NdFeB processing according to claim 1, characterized in that: The vibration mechanism (5) includes a housing (51), on which a second motor (53) and a turntable (54) are provided. The second motor (53) drives the turntable (54) to rotate inside the housing (51). The bottom of the turntable (54) is provided with an inclined plate (542). The housing (51) is provided with a fixed platform (55). The bottom of the fixed platform (55) is provided with an abutment plate (56). The top of the abutment plate (56) is provided with a groove platform (561). A rotating ball (57) is rotatably provided on the groove platform (561). The top of the rotating ball (57) is provided with a movable rod (571). The top of the movable rod (571) contacts and cooperates with the bottom of the inclined plate (542). A circular plate (572) is provided on the movable rod (571). A spring (573) connected to the fixed platform (55) is provided on the circular plate (572).

3. A forming device for processing neodymium iron boron according to claim 2, characterized in that: The housing (51) is provided with a material box two (52), the bottom of the material box two (52) is provided with a feeding pipe (522), the fixed platform (55) is provided with a fixed cylinder (551) at the axis, the turntable (54) is rotated and cooperates with the fixed cylinder (551), the feeding pipe (522) passes through the through hole of the fixed cylinder (551) and is connected to the fixed cylinder (551), the feeding pipe (522) is provided with a valve two (521), the top platform two (44) is provided with a pressure sensor (441), and a weighing plate (442) is provided above the pressure sensor (441).

4. A forming device for processing neodymium iron boron according to claim 1, characterized in that: The processing box (1) is equipped with a cylinder (14) inside, and a pad (15) is provided at the output end of the cylinder (14). The processing box (1) is equipped with a guide groove platform (13) that slides with the pad (15). The bottom of the support platform (45) is equipped with a slot (452) that inserts with the pad (15). The top of the support platform (45) is equipped with a top block (451). The top block (451) passes through the bottom through hole of the mold cylinder (34) and contacts the piston block (35). The top of the support platform (45) is equipped with an electromagnetic coil (453) sleeved on the outside of the mold cylinder (34).

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