Crusher for neodymium-iron-boron magnet production

Abstract

The utility model relates to the technical field of neodymium-iron-boron magnet production, in particular to a crusher for neodymium-iron-boron magnet production, which comprises a crushing box, a servo motor, a driving mechanism, a crushing roller, a connecting gear, a translation mechanism, a baffle plate, a guide plate and a feed opening, the driving mechanism is connected with the servo motor, the crushing rollers and the connecting gear are both connected with the driving mechanism, the translation mechanism is connected with the connecting gear, and when the servo motor is started, the driving mechanism controls the two crushing rollers to rotate oppositely so as to crush the neodymium-iron-boron magnet. When the smashing roller rotates, the connecting gear rotates synchronously and controls the translation mechanism to operate so as to drive the baffle to intermittently shield the discharging port, through cyclic quantitative discharging of the neodymium-iron-boron magnets, the situation that too many neodymium-iron-boron magnets are smashed at a time can be avoided, missing smashing of the neodymium-iron-boron magnets can be avoided, and the quality of the neodymium-iron-boron magnets is improved. Therefore, the crushing efficiency and the crushing quality of the neodymium-iron-boron magnet can be improved.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron magnet production technology, specifically a crusher used in the production of neodymium iron boron magnets. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets are intermetallic compounds composed of rare earth element neodymium (R) and iron and boron. R is primarily neodymium or a combination of neodymium and other rare earth elements; sometimes cobalt, aluminum, vanadium, etc., are used to replace some of the iron. They exhibit strong magnetocrystalline anisotropy and very high saturation magnetization.

[0003] The production process of neodymium iron boron involves processes such as batching, powder making, molding, sintering and tempering. The powder making process requires processing by a crushing device. When making coarse powder in the secondary processing, the existing crushing device of neodymium iron boron cannot feed the material in batches, and manual feeding is required in batches. The feeding speed is not easy to control. Feeding too fast can easily lead to the accumulation of raw materials and equipment jamming, while feeding too slowly will reduce production efficiency.

[0004] To address the aforementioned problems, existing technologies offer a solution. For example, patent publication number CN220258144U discloses a raw material crushing device for the production of bonded NdFeB magnets, belonging to the field of crushing device technology. This device solves the technical problem of existing NdFeB magnet raw material crushing devices where excessively fast feeding leads to raw material accumulation, affecting production efficiency. The device includes a machine body with an internal telescopic component comprising two extrusion blocks. A moving groove is provided within the moving groove, containing sliding rods. A trapezoidal block is fixed between the two sliding rods. A transmission component is located on the side of the machine body. Two crushing rollers are installed inside the machine body. A drive motor is mounted on the side wall of the machine body. An outlet is provided, connected to a recycling tank. This raw material crushing device for the production of bonded NdFeB magnets can adjust and maintain a stable feeding speed for the raw materials. To ensure smooth operation of the equipment and improve production efficiency, it is necessary to re-crush stuck NdFeB magnet raw materials to improve the crushing effect. Although existing technologies can control the feeding speed of NdFeB magnets, they cannot match the rotation speed of the crushing roller. This results in the NdFeB magnets being prone to clogging when the crushing roller rotates slowly, and the feeding speed of NdFeB magnets not keeping up with the rotation speed of the crushing roller when the crushing roller rotates fast, thus wasting resources and reducing the crushing efficiency of NdFeB magnets.

[0005] Therefore, a crusher for the production of neodymium iron boron magnets is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a crusher for the production of neodymium iron boron magnets, thereby solving the above-mentioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A crusher for producing neodymium iron boron magnets includes a crushing box, a servo motor, a drive mechanism, crushing rollers, a connecting gear, a translation mechanism, a baffle, a guide plate, and a discharge port. The servo motor is connected to the crushing box, the drive mechanism is connected to the servo motor, the crushing rollers and the connecting gear are both connected to the drive mechanism, the translation mechanism is connected to the connecting gear, the baffle is connected to the translation mechanism, the guide plate is connected to the baffle, and the discharge port is correspondingly arranged with the baffle. When the servo motor starts, the drive mechanism controls the two crushing rollers to rotate in opposite directions to crush the neodymium iron boron magnets. When the crushing rollers rotate, the connecting gear rotates synchronously and controls the translation mechanism to drive the baffle to intermittently block the discharge port.

[0009] Preferably, the drive mechanism includes a main gear and a secondary gear, the main gear being connected to a servo motor, and the secondary gear engaging with the main gear.

[0010] Preferably, the gear ratios of the main gear and the secondary gear are the same, and the main gear and the secondary gear are symmetrically arranged about the center line of the crushing box.

[0011] Preferably, the translation mechanism includes a rack, a guide block, a return spring, and a guide rod. The rack is engaged with a connecting gear, the guide block is connected to a baffle, the return spring is connected to the guide block, and the guide rod is connected to the guide block.

[0012] Preferably, the crushing box has a guide groove inside, and the guide block and guide rod are both installed in the guide groove.

[0013] Preferably, the connecting gear includes a toothed portion and an arc portion, wherein the curvature ratio of the toothed portion to the arc portion is 3:1.

[0014] Preferably, the baffle includes a rectangular portion and a tapered portion, wherein the length of the tapered portion is the same as the width of the discharge port.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The NdFeB magnets are pulverized by controlling two pulverizing rollers to rotate in opposite directions. At the same time, a baffle is controlled by a connecting gear to reciprocate at the feeding port, thereby intermittently blocking the feeding port. This allows for the cyclical and quantitative feeding of NdFeB magnets, preventing the pulverization of too many NdFeB magnets at once and avoiding any NdFeB magnets falling off the pulverizing rollers and being missed during pulverization. By matching the feeding speed of the NdFeB magnets with the rotation speed of the pulverizing rollers, the pulverization efficiency and quality of the NdFeB magnets can be improved. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0019] Figure 3 This is a three-dimensional cross-sectional structural diagram of the crushing box of this utility model;

[0020] Figure 4 This is a schematic diagram of the rear cross-sectional structure of this utility model.

[0021] In the diagram: 1. Crushing box; 2. Servo motor; 3. Drive mechanism; 31. Main gear; 32. Secondary gear; 4. Crushing roller; 5. Connecting gear; 51. Toothed part; 52. Arc part; 6. Translation mechanism; 61. Rack; 62. Guide block; 63. Return spring; 64. Guide rod; 65. Guide groove; 7. Baffle; 71. Rectangular part; 72. Conical part; 8. Guide plate; 9. Discharge port. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the embodiments described below are only some embodiments of the present utility model, and not all of them. If other embodiments are obtained by those skilled in the art without creative effort, they shall fall within the protection scope of the present utility model.

[0023] Reference Figures 1 to 4A crusher for producing neodymium iron boron magnets includes a crushing box 1 with a feeding port at the top for easy addition of neodymium iron boron magnets. The crushing box 1 also has a receiving port located directly below the crushing roller 4 for easy collection of the crushed magnets. The crusher further includes a servo motor 2, a drive mechanism 3, a crushing roller 4, a connecting gear 5, a translation mechanism 6, a baffle 7, a guide plate 8, and a discharge port 9. The servo motor 2 is connected to the crushing box 1, and the drive mechanism 3 is also connected to the servo motor 2. The crushing roller 4 and the connecting gear 5 are both connected to the drive mechanism 3. The connecting gear 5 includes a toothed portion 51 and an arc portion 52 with a curvature ratio of 3:1. This design is to prevent the connecting gear 5 from initially... The baffle 7 rotates in one direction to achieve reciprocating motion. The translation mechanism 6 is connected to the connecting gear 5, and the baffle 7 is connected to the translation mechanism 6. The baffle 7 includes a rectangular part 71 and a conical part 72. The length of the conical part 72 is the same as the width of the feeding port 9. This is to prevent the baffle 7 from pushing the falling NdFeB magnets as it gradually blocks the feeding port 9. It can prevent the NdFeB magnets from being pushed to both sides of the crushing roller 4 and avoid some NdFeB magnets from not being crushed. The guide plate 8 is connected to the baffle 7, and the feeding port 9 is set correspondingly to the baffle 7. When the servo motor 2 starts, the drive mechanism 3 controls the two crushing rollers 4 to rotate in opposite directions to crush the NdFeB magnets. When the crushing rollers 4 rotate, the connecting gear 5 rotates synchronously and controls the translation mechanism 6 to run so that the baffle 7 intermittently blocks the feeding port 9.

[0024] As one embodiment of this utility model, refer to Figures 2 to 4 The drive mechanism 3 includes a main gear 31 and a secondary gear 32. The main gear 31 is connected to the servo motor 2, and the secondary gear 32 is engaged with the main gear 31. The gear ratios of the main gear 31 and the secondary gear 32 are the same, and the main gear 31 and the secondary gear 32 are symmetrically arranged about the center line of the crushing box 1. Through the above arrangement, it can be ensured that the two crushing rollers 4 rotate synchronously in opposite directions, thereby enabling the crushing of neodymium iron boron magnets.

[0025] As one embodiment of this utility model, refer to Figure 3 and Figure 4 The translation mechanism 6 includes a rack 61, a guide block 62, a return spring 63, and a guide rod 64. The rack 61 is engaged with the connecting gear 5. The guide block 62 is connected to the baffle 7. The return spring 63 is connected to the guide block 62. By setting the return spring 63, the baffle 7 can be controlled to return to its original position when the rack 61 loses power from the connecting gear 5, thereby blocking the feed inlet 9. The guide rod 64 is connected to the guide block 62. A guide groove 65 is opened inside the crushing box 1. The guide block 62 and the guide rod 64 are both installed in the guide groove 65.

[0026] Working principle: When in use, the user puts the neodymium iron boron magnets to be crushed into the crushing box 1 through the feeding port. The neodymium iron boron magnets are blocked by the guide plate 8 and accumulate.

[0027] Start the servo motor 2. The servo motor 2 drives the secondary gear 32 to rotate through the main gear 31. The main gear 31 and the secondary gear 32 mesh with each other and can drive the two crushing rollers 4 to rotate in opposite directions.

[0028] When the main gear 31 rotates, it can drive the connecting gear 5 to rotate through the toothed part 51. When the connecting gear 5 rotates, it can drive the baffle 7 to move horizontally on the guide plate 8 through the rack 61. When the baffle 7 moves, it can slide on the guide rod 64 through the guide block 62, and at the same time, it can squeeze the reset spring 63. At this time, the baffle 7 separates from the discharge port 9, and the discharge port 9 is exposed. The neodymium iron boron magnet falls through the discharge port 9 between the two crushing rollers 4. When the main gear 31 docks with the arc part 52, under the elastic action of the reset spring 63, the baffle 7 is driven to gradually reset through the guide rod 64, thereby blocking the discharge port 9 and preventing the neodymium iron boron magnet from falling further. The crushed neodymium iron boron magnet falls into the receiving port, realizing the collection of the crushed neodymium iron boron magnet.

[0029] Although the embodiments of this utility model have been described in detail with reference to the accompanying drawings, those skilled in the art can make changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of this utility model. The appended claims and their equivalents define the scope of this utility model.

Claims

1. A crusher for neodymium-iron-boron magnet production, comprising a pulverizing box (1), characterized in that: It also includes a servo motor (2), a drive mechanism (3), a crushing roller (4), a connecting gear (5), a translation mechanism (6), a baffle (7), a guide plate (8), and a discharge port (9). The servo motor (2) is connected to the crushing box (1), the drive mechanism (3) is connected to the servo motor (2), the crushing roller (4) and the connecting gear (5) are both connected to the drive mechanism (3), the translation mechanism (6) is connected to the connecting gear (5), the baffle (7) is connected to the translation mechanism (6), the guide plate (8) is connected to the baffle (7), and the discharge port (9) is correspondingly set with the baffle (7). When the servo motor (2) is started, the drive mechanism (3) controls the two crushing rollers (4) to rotate in opposite directions to crush the neodymium iron boron magnet. When the crushing rollers (4) rotate, the connecting gear (5) rotates synchronously and controls the translation mechanism (6) to run so that the baffle (7) intermittently blocks the discharge port (9).

2. A crusher for production of neodymium-iron-boron magnets according to claim 1, characterized in that: The drive mechanism (3) includes a main gear (31) and a secondary gear (32). The main gear (31) is connected to the servo motor (2), and the secondary gear (32) is engaged with the main gear (31).

3. A crusher for the production of neodymium-iron-boron magnets according to claim 2, characterized in that The gear ratio of the main gear (31) and the secondary gear (32) is the same, and the main gear (31) and the secondary gear (32) are symmetrically arranged with respect to the center line of the crushing box (1).

4. A crusher for production of Nd-Fe-B magnets according to claim 1, characterized in that: The translation mechanism (6) includes a rack (61), a guide block (62), a return spring (63), and a guide rod (64). The rack (61) is engaged with the connecting gear (5), the guide block (62) is connected to the baffle (7), the return spring (63) is connected to the guide block (62), and the guide rod (64) is connected to the guide block (62).

5. A crusher for producing neodymium iron boron magnets according to claim 4, characterized in that: The crushing box (1) has a guide groove (65) inside, and the guide block (62) and guide rod (64) are both installed in the guide groove (65).

6. A crusher for production of Nd-Fe-B magnets according to claim 1, characterized in that: The connecting gear (5) includes a toothed portion (51) and an arc portion (52), and the curvature ratio of the toothed portion (51) to the arc portion (52) is 3:

1.

7. A crusher for production of Nd-Fe-B magnets according to claim 1, characterized in that: The baffle (7) includes a rectangular portion (71) and a tapered portion (72), the length of which is the same as the width of the discharge port (9).

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