Polishing device for flaky neodymium iron boron production

Abstract

The invention discloses a grinding device for flaky neodymium iron boron production, which comprises a grinding rack and a flaky neodymium iron boron main body, a protection type grinding mechanism is arranged at the top of the grinding rack, an auxiliary grinding mechanism is arranged on the grinding rack, and the protection type grinding mechanism comprises a grinding treatment frame; an extending frame is fixedly installed on the back face of the polishing treatment frame, a driving motor is fixedly installed on the back face of the extending frame, and a rotating shaft is rotationally connected to the front face of the extending frame. Through work of the driving motor, the rotating shaft, the symmetrical rotating seat and the extension shaft can be driven to rotate, while the extension shaft rotates, the impeller body can be driven to rotate in the water inlet bin, negative pressure is generated to extract circulating water, then the circulating water is sprayed out from the spray head, and the circulating water can be sprayed to the grinding sleeve accordingly; the water body can fall onto the flaky neodymium iron boron main body under the action of gravity, so that the dust falling function is realized, and the environmental protection property of the structure is improved.

Description

Technical Field

[0001] The invention relates to the technical field of NdFeB production, in particular to a grinding device for producing sheet NdFeB. Background Art

[0002] NdFeB is an intermetallic compound composed of the rare earth element neodymium, iron and boron. It has extremely high magnetic energy product and coercivity. NdFeB magnets are widely used in new energy vehicles, consumer electronics, wind power, variable frequency air conditioners, energy-saving elevators and robots. The rapid growth of new energy vehicles is the main driving force for the consumption of NdFeB magnets. The advantages of NdFeB magnetic materials include high cost performance and good mechanical properties. In the production process of NdFeB, after the block NdFeB is cut into sheet NdFeB, it needs to be polished.

[0003] A Chinese patent discloses a NdFeB magnet grinding device, with publication number CN115106858B. The technical solution disclosed in the patent document is as follows: it includes a frame, a connecting plate is fixed on the frame, a hopper is fixed on the connecting plate, a support plate is fixed on the connecting plate inside the hopper, a push plate is provided on the hopper on one side of the support plate, the push plate passes through the hopper and is slidably connected to the hopper, a feeding cylinder is also fixed on the connecting plate, the end of the piston rod of the feeding cylinder is fixed to the aforementioned push plate, a limiting cylinder is also fixed on the connecting plate, a plurality of limiting blocks are fixed to the end of the piston rod of the limiting cylinder, and a slide is also provided above the hopper.

[0004] In order to solve the problem that two grinding devices are needed to grind the outside and inner wall of the ring blank respectively during the production of ring magnets, the existing technology adopts a method of simultaneously grinding the inner and outer surfaces by designing a grinding motor and a grinding roller and other structures. However, the workpiece cannot be dusted during the grinding process. A large amount of floating powder will be generated during the grinding of the sheet NdFeB, which affects the air quality near the equipment and has poor environmental performance.

[0005] To this end, we propose a grinding device for producing sheet NdFeB. Summary of the invention

[0006] The object of the present invention is to provide a grinding device for producing sheet NdFeB to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a grinding device for producing flaky NdFeB, comprising a grinding frame and a flaky NdFeB body, a protective grinding mechanism being arranged on the top of the grinding frame, and an auxiliary grinding mechanism being arranged on the grinding frame.

[0008] The protective grinding mechanism includes a grinding processing frame, an extension frame is fixedly installed on the back of the grinding processing frame, a driving motor is fixedly installed on the back of the extension frame, the front of the extension frame is rotatably connected to a rotating shaft, the output shaft of the driving motor is fixedly connected to the end of the back of the rotating shaft, the front and back of the inner wall of the grinding processing frame are rotatably connected to symmetrical rotating seats, the end of the front of the rotating shaft is fixedly connected to the back of the symmetrical rotating seat located at the back, the front of the grinding processing frame is rotatably connected to an extension shaft, the end of the back of the extension shaft is fixedly connected to the front of the symmetrical rotating seat located at the front, a hollow frame is detachably connected between adjacent sides of two symmetrical rotating seats, and a grinding sleeve is fixedly connected to the outer wall of the hollow frame.

[0009] The auxiliary grinding mechanism includes a water retaining frame and a raised seat, wherein the water retaining frame is fixedly mounted on the top of the grinding frame, the raised seat is fixedly mounted on the top of the grinding frame and is located in the inner cavity of the water retaining frame, a track rod is fixedly mounted between two adjacent sides of the raised seats, and a sliding seat is slidably connected to the outer wall of the track rod.

[0010] Preferably, a dust collection bin is fixedly mounted on the outer wall on the inner side of the extension frame, an exhaust pipe is fixedly connected to the top of the dust collection bin, and an air filter cartridge body is detachably connected to the top of the exhaust pipe.

[0011] Preferably, an inner frame is fixedly mounted on the inner wall of the dust collection bin, a receiving shaft located in the inner cavity of the inner frame is fixedly connected to the middle of the rotating shaft, and blades are fixedly mounted on the outer wall of the receiving shaft.

[0012] Preferably, the left side of the polishing processing frame is detachably connected to a movable frame, the right side of the movable frame is fixedly installed with an air suction hood located above the hollow frame, the bottom of the air suction hood is detachably connected to a coarse filter screen, the top of the air suction hood is threadedly connected to a soft air pipe, and the end of the soft air pipe away from the air suction hood is threadedly connected to the top of the dust suction bin.

[0013] Preferably, diversion pipes are fixedly installed on both sides of the inner wall of the polishing processing frame, a nozzle is fixedly connected to the outer wall inside the diversion pipe, a copper pipe is fixedly connected to the top of the diversion pipe, and a three-way pipe is fixedly connected to the end of the copper pipe away from the diversion pipe.

[0014] Preferably, the bottom of the three-way pipe is fixedly connected to a water inlet bin, the front of the extension shaft extends into the inner cavity of the water inlet bin and is fixedly connected to an impeller body, and the front of the water inlet bin is fixedly connected to a water inlet pipe opening.

[0015] Preferably, the protective grinding mechanism also includes a lifting leg, which is fixedly mounted on the top of the grinding frame, and a top support frame is fixedly mounted on one end of the lifting leg away from the grinding frame, and side support arms are fixedly mounted on both sides of the top support frame, and the grinding processing frame is fixedly mounted on the outer wall inside the side support arm.

[0016] Preferably, the auxiliary grinding mechanism also includes a workpiece frame, a driving frame and a raised frame, a raised ring is fixedly installed on the top of the sliding seat, a plug-in tube is fixedly installed on the bottom of the workpiece frame, and the plug-in tube is movably inserted in the inner cavity of the raised ring, an arc-shaped plastic shell is fixedly connected to the outer wall of the workpiece frame, the outer wall of the arc-shaped plastic shell is movably connected to the inner wall of the raised ring, a magnetic strip is fixedly installed on the bottom of the inner wall of the workpiece frame, the sheet-like NdFeB body is movably connected in the inner cavity of the workpiece frame, and the bottom of the sheet-like NdFeB body is magnetically connected to the top of the magnetic strip.

[0017] Preferably, the driving frame is fixedly mounted on the top of the grinding machine frame, a screw rod is rotatably connected between the two sides of the inner wall of the driving frame, a servo motor is fixedly mounted on the left side of the driving frame, the output shaft of the servo motor is fixedly connected to the left end of the screw rod, a displacement seat is slidably connected to the outer wall of the screw rod, a connecting rod is fixedly mounted on the front side of the displacement seat, and the front side of the connecting rod is fixedly connected to the back side of the sliding seat.

[0018] Preferably, a through hole is provided on the top of the grinding machine frame, the raised frame is fixedly mounted on the bottom of the grinding machine frame and is located below the through hole, a circulating water filter bin is movably sleeved on the outer wall of the raised frame, a V-shaped plate is fixedly mounted on the inner wall of the circulating water filter bin, a stainless steel filter screen is fixedly mounted on the inner wall of the V-shaped plate, a reflux hole is provided on the bottom of the circulating water filter bin, a locking bolt is threadedly connected to the side of the circulating water filter bin, and the threaded end of the locking bolt is movably connected to the side of the raised frame.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention can drive the rotating shaft, the symmetrical rotating seat and the extension shaft to rotate by driving the motor. The symmetrical rotating seat can drive the grinding sleeve to rotate while rotating, so as to realize the function of grinding the flaky NdFeB main body. The extension shaft can drive the impeller main body to rotate in the water inlet bin while rotating, so as to generate negative pressure to extract the circulating water, and then make the circulating water spray out from the nozzle, and then the circulating water can be sprayed onto the grinding sleeve, and the water body will fall onto the flaky NdFeB main body under the action of gravity, so as to realize the function of dust reduction, and avoid the problem that the air environment quality near the equipment is affected during grinding. , increasing the environmental protection of the structure. At the same time, the circulating water can take away the heat generated by the friction of the sheet NdFeB main body, avoiding the problem that too much heat accumulation will affect the performance of the sheet NdFeB main body. While the rotating shaft rotates, it can drive the receiving shaft and the blades to rotate in the inner cavity of the inner frame, thereby causing the inner cavity of the inner frame to generate negative pressure, absorbing air from the front, and then inhaling air from the coarse filter screen, and then transporting it to the air filter cartridge body to purify the air, avoiding the problem that a lot of dust is generated at the beginning of grinding, and the water body output at a uniform speed cannot achieve sufficient dust reduction treatment, further increasing the environmental protection of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a grinding device for producing sheet NdFeB;

[0022] Figure 2 It is a schematic diagram of the structure of the grinding processing frame and the extension frame of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the hollow frame of the present invention;

[0024] Figure 4 It is a schematic diagram of the cutaway structure of the dust collection bin of the present invention;

[0025] Figure 5 It is a schematic diagram of the bottom structure of the air suction hood of the present invention;

[0026] Figure 6 It is a schematic diagram of the exploded structure of the water inlet bin of the present invention;

[0027] Figure 7 This is a schematic diagram of the top structure of the grinding frame of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection structure between the workpiece frame and the sliding seat of the present invention;

[0029] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure at A in the middle;

[0030] Fig.10 It is a schematic diagram of the cutaway structure of the circulating water filter bin of the present invention.

[0031] In the figure: 1. grinding frame; 11. sheet NdFeB main body; 2. protective grinding mechanism; 21. lifting leg; 211. top support frame; 212. side support arm; 22. grinding frame; 221. symmetrical rotating seat; 222. hollow frame; 223. grinding sleeve; 23. extension frame; 231. driving motor; 232. rotating shaft; 233. dust collection bin; 234. exhaust pipe; 235. air filter cartridge main body; 236. inner frame; 237. receiving shaft; 238. blade; 24. movable frame; 241. suction hood; 242. coarse filter; 243. soft air pipe; 25. shunt pipe ; 251, nozzle; 252, copper tube; 253, tee pipe; 254, water inlet tank; 255, impeller body; 256, extension shaft; 3, auxiliary grinding mechanism; 31, water retaining frame; 32, raised seat; 33, track rod; 34, sliding seat; 341, raised ring; 342, workpiece frame; 343, plug-in cylinder; 344, arc-shaped plastic shell; 345, magnetic strip; 35, drive frame; 36, servo motor; 37, screw rod; 371, displacement seat; 372, connecting rod; 38, raised frame; 381, circulating water filter tank; 382, ​​V-shaped plate; 383, stainless steel filter. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 10The present invention provides a technical solution: a grinding device for producing sheet NdFeB, comprising a grinding frame 1 and a sheet NdFeB main body 11, a protective grinding mechanism 2 is arranged on the top of the grinding frame 1, an auxiliary grinding mechanism 3 is arranged on the grinding frame 1, the protective grinding mechanism 2 comprises a grinding processing frame 22, an extension frame 23 is fixedly installed on the back of the grinding processing frame 22, a driving motor 231 is fixedly installed on the back of the extension frame 23, a rotating shaft 232 is rotatably connected to the front of the extension frame 23, and the output shaft of the driving motor 231 is fixedly connected to the end of the back of the rotating shaft 232 The front and back sides of the inner wall of the grinding processing frame 22 are both rotatably connected with a symmetrical rotating seat 221, the front end of the rotating shaft 232 is fixedly connected to the back side of the symmetrical rotating seat 221 located at the back, the front side of the grinding processing frame 22 is rotatably connected with an extension shaft 256, the back end of the extension shaft 256 is fixedly connected to the front side of the symmetrical rotating seat 221 located at the front, and a hollow frame 222 is detachably connected between the adjacent sides of the two symmetrical rotating seats 221, and a grinding sleeve 223 is fixedly connected to the outer wall of the hollow frame 222. The auxiliary grinding mechanism 3 includes a water retaining frame The water retaining frame 31 is fixedly mounted on the top of the grinding frame 1, the raised seat 32 is fixedly mounted on the top of the grinding frame 1 and is located in the inner cavity of the water retaining frame 31, a track rod 33 is fixedly mounted between the adjacent sides of the two raised seats 32, and a sliding seat 34 is slidably connected to the outer wall of the track rod 33, which controls the operation of the driving motor 231, and can drive the rotating shaft 232, the symmetrical rotating seat 221 and the extension shaft 256 to rotate. The symmetrical rotating seat 221 rotates while driving the grinding sleeve 223 to rotate, so as to realize the sheet-shaped NdFeB main body 11 being rotated. The rotating shaft 232 can drive the blades 238 to rotate to realize the dust collection function, the extension shaft 256 can drive the impeller body 255 to rotate to realize the function of spraying water to reduce dust, and the three functions are realized by a single driving motor 231, which reduces the consumption of electric energy and the cost of setting up the motor. The shape design of the hollow frame 222 improves the natural heat dissipation capacity of the grinding sleeve 223. The hollow frame 222 is installed between two symmetrical rotating seats 221 by bolts, which is convenient for users to disassemble the hollow frame 222 and then replace the grinding sleeve 223 as a whole.

[0034] In the preferred technical scheme of the present embodiment, a dust suction bin 233 is fixedly installed on the outer wall of the inner side of the extension frame 23, an exhaust pipe 234 is fixedly connected to the top of the dust suction bin 233, an air filter cartridge body 235 is detachably connected to the top of the exhaust pipe 234, an inner frame 236 is fixedly installed on the inner wall of the dust suction bin 233, a receiving shaft 237 located in the inner cavity of the inner frame 236 is fixedly connected to the middle part of the rotating shaft 232, a blade 238 is fixedly installed on the outer wall of the receiving shaft 237, a movable frame 24 is detachably connected to the left side of the grinding processing frame 22, an air suction hood 241 located above the hollow frame 222 is fixedly installed on the right side of the movable frame 24, a coarse filter screen 242 is detachably connected to the bottom of the air suction hood 241, a soft air pipe 243 is threadedly connected to the top of the air suction hood 241, and one end of the soft air pipe 243 away from the air suction hood 241 is threadedly connected to the top of the dust suction bin 233, When the shaft 232 rotates, it can drive the receiving shaft 237 and the blades 238 to rotate in the inner cavity of the inner frame 236, thereby generating negative pressure in the inner cavity of the inner frame 236, absorbing air from the front and discharging it backwards, and then sucking air from the coarse filter 242, and then transporting it to the air filter cartridge body 235 to purify the air, so as to avoid the problem that a lot of dust is generated at the beginning of grinding, and the water body output at a uniform speed cannot achieve sufficient dust reduction treatment. The air filter cartridge body 235 is installed on the exhaust pipe 234 by bolts, which is convenient for users to disassemble, clean or replace the air filter cartridge body 235. The coarse filter 242 is installed on the bottom of the suction hood 241 by bolts, and the coarse filter 242 can be disassembled and cleaned. The movable frame 24 is installed on the side of the grinding processing frame 22 by bolts, thereby the suction hood 241 can be disassembled as a whole, so as to facilitate the disassembly of the hollow frame 222.

[0035] In the preferred technical solution of this embodiment, a shunt pipe 25 is fixedly installed on both sides of the inner wall of the grinding processing frame 22, a nozzle 251 is fixedly connected to the outer wall of the inner side of the shunt pipe 25, a copper pipe 252 is fixedly connected to the top of the shunt pipe 25, and the end of the copper pipe 252 away from the shunt pipe 25 is fixedly connected to a three-way pipe 253, and the bottom of the three-way pipe 253 is fixedly connected to a water inlet bin 254, the front of the extension shaft 256 extends into the inner cavity of the water inlet bin 254 and is fixedly connected to the impeller body 255, and the front of the water inlet bin 254 is fixedly connected to the inner cavity of the water inlet bin 254. It is connected with a water inlet pipe, and an external water source is pre-connected at the water inlet pipe on the front side of the water inlet bin 254. When the extension shaft 256 rotates, the impeller body 255 can be driven to rotate in the water inlet bin 254, generating negative pressure to extract external circulating water. The circulating water is ejected from the nozzle 251 through the three-way pipe 253, the copper pipe 252 and the diverter pipe 25, and then the circulating water can be sprayed onto the polishing sleeve 223. The water will fall onto the sheet-like NdFeB main body 11 under the action of gravity, thereby realizing the dust reduction function and increasing environmental protection.

[0036] In the preferred technical solution of this embodiment, the protective grinding mechanism 2 also includes a lifting leg 21, which is fixedly mounted on the top of the grinding frame 1, and a top support frame 211 is fixedly mounted on one end of the lifting leg 21 away from the grinding frame 1, and side support arms 212 are fixedly mounted on both sides of the top support frame 211, and a grinding processing frame 22 is fixedly mounted on the outer wall inside the side support arm 212. Through the design of the lifting leg 21, the top support frame 211 can be lifted, and through the cooperation of the top support frame 211 and the side support arm 212, the grinding processing frame 22 can be suspended and supported, which is convenient for grinding and dust reduction work.

[0037] In the preferred technical solution of the present embodiment, the auxiliary grinding mechanism 3 also includes a workpiece frame 342, a driving frame 35 and a raised frame 38. A raised ring 341 is fixedly installed on the top of the sliding seat 34, and a plug-in tube 343 is fixedly installed on the bottom of the workpiece frame 342. The plug-in tube 343 is movably inserted in the inner cavity of the raised ring 341. An arc-shaped plastic shell 344 is fixedly connected to the outer wall of the workpiece frame 342. The outer wall of the arc-shaped plastic shell 344 is movably connected to the inner wall of the raised ring 341. A magnetic strip 345 is fixedly installed on the bottom of the inner wall of the workpiece frame 342. The flaky NdFeB main body 11 is movably connected in the inner cavity of the workpiece frame 342. The bottom of the flaky NdFeB main body 11 is magnetically connected to the top of the magnetic strip 345. The driving frame 35 is fixedly installed on the top of the grinding machine frame 1. A screw rod 37 is rotatably connected between the two sides of the inner wall of the driving frame 35. A servo motor 36 is fixedly installed on the left side of the driving frame 35. The output of the servo motor 36 The output shaft is fixedly connected to the left end of the screw rod 37, and a displacement seat 371 is slidably connected to the outer wall of the screw rod 37. A connecting rod 372 is fixedly installed on the front of the displacement seat 371. The front of the connecting rod 372 is fixedly connected to the back of the sliding seat 34. The sheet-shaped NdFeB main body 11 is inserted into the workpiece frame 342, and then the sheet-shaped NdFeB main body 11 can be installed through the magnetic attraction of the magnetic strip 345. Then, the plug-in cylinder 343 and the arc-shaped plastic shell 344 are inserted into the convex Inside the raising ring 341, the arc-shaped plastic shell 344 can produce elastic deformation and fit on the inner wall of the raised ring 341 to complete the positioning of the workpiece frame 342. The servo motor 36 is controlled to work, which can drive the screw 37 to rotate, so that the displacement seat 371 slides left and right. Then, through the transmission of the connecting rod 372, the sliding seat 34 can be displaced left and right on the outer wall of the track rod 33, and the position of the sheet NdFeB body 11 is synchronously adjusted left and right to improve the adequacy of the grinding.

[0038] In the preferred technical solution of this embodiment, a through hole is provided on the top of the grinding frame 1, and a raised frame 38 is fixedly installed at the bottom of the grinding frame 1 and is located below the through hole. A circulating water filter bin 381 is movably sleeved on the outer wall of the raised frame 38, and a V-shaped plate 382 is fixedly installed on the inner wall of the circulating water filter bin 381. A stainless steel filter screen 383 is fixedly installed on the inner wall of the V-shaped plate 382. A reflux hole is provided at the bottom of the circulating water filter bin 381, and a locking bolt is threadedly connected to the side of the circulating water filter bin 381, and the threaded end of the locking bolt is connected to the raised frame 38. The side of the raised frame 38 is movably connected. Through the design of the water retaining frame 31, the circulating water falling on the top of the grinding machine frame 1 can be blocked, so that it flows into the through hole and then enters the circulating water filter chamber 381. Through the design of the stainless steel filter 383, the circulating water can be filtered. The filtered circulating water is discharged through the reflux hole and can be collected with the help of an external container to reduce the waste of water resources. The locking bolt can be loosened to pull the circulating water filter chamber 381 out from the bottom of the raised frame 38, which is convenient for users to clean the filter surface of the stainless steel filter 383.

[0039] Working principle: When in use, the sheet NdFeB main body 11 is inserted into the workpiece frame 342 in sequence, and the sheet NdFeB main body 11 is magnetically attracted by the magnetic strip 345 to complete the installation of the sheet NdFeB main body 11. Then the workpiece frame 342 is inserted as a whole on the top of the sliding seat 34, and the driving motor 231 is controlled to drive the rotating shaft 232, the symmetrical rotating seat 221 and the extension shaft 256 to rotate. The symmetrical rotating seat 221 rotates and the grinding sleeve 223 can be driven to rotate at the same time, so as to realize the function of grinding the sheet NdFeB main body 11. The rotating shaft 232 can drive the blades 238 to rotate to achieve the function of dust collection, and the extension shaft 256 can drive the impeller body 255 to rotate to achieve the function of spraying water to reduce dust. While grinding, the servo motor 36 is controlled to work and drive the screw rod 37 to rotate, so that the displacement seat 371 slides left and right. The connecting rod 372 is driven to make the sliding seat 34 move left and right on the outer wall of the track rod 33, and at the same time, the grinding position of the sheet NdFeB body 11 is adjusted left and right. After grinding, the sheet NdFeB body 11 can be taken out from the workpiece frame 342.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding device for producing sheet NdFeB, comprising a grinding frame (1) and a sheet NdFeB main body (11), characterized in that: A protective grinding mechanism (2) is arranged on the top of the grinding frame (1), and an auxiliary grinding mechanism (3) is arranged on the grinding frame (1); The protective grinding mechanism (2) comprises a grinding processing frame (22), an extension frame (23) is fixedly mounted on the back of the grinding processing frame (22), a driving motor (231) is fixedly mounted on the back of the extension frame (23), a rotating shaft (232) is rotatably connected to the front of the extension frame (23), an output shaft of the driving motor (231) is fixedly connected to the end of the back of the rotating shaft (232), and a symmetrical rotating seat (221) is rotatably connected to the front and back of the inner wall of the grinding processing frame (22). The front end of the rotating shaft (232) is fixedly connected to the back of the symmetrical rotating seat (221) located at the back, the front of the grinding processing frame (22) is rotatably connected to an extension shaft (256), the back end of the extension shaft (256) is fixedly connected to the front of the symmetrical rotating seat (221) located at the front, and a hollow frame (222) is detachably connected between the adjacent sides of the two symmetrical rotating seats (221), and a grinding sleeve (223) is fixedly connected to the outer wall of the hollow frame (222); The auxiliary grinding mechanism (3) comprises a water retaining frame (31) and a raised seat (32); the water retaining frame (31) is fixedly mounted on the top of the grinding machine frame (1); the raised seat (32) is fixedly mounted on the top of the grinding machine frame (1) and is located in the inner cavity of the water retaining frame (31); a track rod (33) is fixedly mounted between two adjacent sides of the raised seats (32); and a sliding seat (34) is slidably connected to the outer wall of the track rod (33).

2. A grinding device for producing sheet NdFeB according to claim 1, characterized in that: A dust collection bin (233) is fixedly mounted on the inner outer wall of the extension frame (23), an exhaust pipe (234) is fixedly connected to the top of the dust collection bin (233), and an air filter cartridge body (235) is detachably connected to the top of the exhaust pipe (234).

3. A grinding device for producing sheet NdFeB according to claim 2, characterized in that: An inner frame (236) is fixedly mounted on the inner wall of the dust collection bin (233); a receiving shaft (237) located in the inner cavity of the inner frame (236) is fixedly connected to the middle of the rotating shaft (232); and a blade (238) is fixedly mounted on the outer wall of the receiving shaft (237).

4. A grinding device for producing sheet NdFeB according to claim 3, characterized in that: The left side of the polishing processing frame (22) is detachably connected to a movable frame (24); the right side of the movable frame (24) is fixedly installed with an air suction hood (241) located above the hollow frame (222); the bottom of the air suction hood (241) is detachably connected to a coarse filter (242); the top of the air suction hood (241) is threadedly connected to a soft air pipe (243); and one end of the soft air pipe (243) away from the air suction hood (241) is threadedly connected to the top of the dust collection bin (233).

5. A grinding device for producing sheet NdFeB according to claim 1, characterized in that: A shunt pipe (25) is fixedly installed on both sides of the inner wall of the polishing processing frame (22); a nozzle (251) is fixedly connected to the outer wall inside the shunt pipe (25); a copper pipe (252) is fixedly connected to the top of the shunt pipe (25); and a three-way pipe (253) is fixedly connected to one end of the copper pipe (252) away from the shunt pipe (25).

6. A grinding device for producing sheet NdFeB according to claim 5, characterized in that: The bottom of the three-way pipe (253) is fixedly connected to a water inlet bin (254), the front of the extension shaft (256) extends into the inner cavity of the water inlet bin (254) and is fixedly connected to an impeller body (255), and the front of the water inlet bin (254) is fixedly connected to a water inlet pipe opening.

7. A grinding device for producing sheet NdFeB according to claim 1, characterized in that: The protective grinding mechanism (2) further comprises a lifting leg (21), wherein the lifting leg (21) is fixedly mounted on the top of the grinding frame (1), a top support frame (211) is fixedly mounted on one end of the lifting leg (21) away from the grinding frame (1), side support arms (212) are fixedly mounted on both sides of the top support frame (211), and the grinding processing frame (22) is fixedly mounted on the outer wall inside the side support arms (212).

8. The grinding device for producing sheet NdFeB according to claim 1, characterized in that: The auxiliary grinding mechanism (3) also includes a workpiece frame (342), a driving frame (35) and a raised frame (38); a raised ring (341) is fixedly installed on the top of the sliding seat (34); a plug-in tube (343) is fixedly installed on the bottom of the workpiece frame (342); the plug-in tube (343) is movably plugged into the inner cavity of the raised ring (341); an arc-shaped plastic shell (344) is fixedly connected to the outer wall of the workpiece frame (342); the outer wall of the arc-shaped plastic shell (344) is movably connected to the inner wall of the raised ring (341); a magnetic strip (345) is fixedly installed on the bottom of the inner wall of the workpiece frame (342); the sheet-shaped NdFeB main body (11) is movably connected in the inner cavity of the workpiece frame (342); and the bottom of the sheet-shaped NdFeB main body (11) is magnetically connected to the top of the magnetic strip (345).

9. A grinding device for producing sheet NdFeB according to claim 8, characterized in that: The driving frame (35) is fixedly mounted on the top of the grinding machine frame (1); a screw rod (37) is rotatably connected between the two sides of the inner wall of the driving frame (35); a servo motor (36) is fixedly mounted on the left side of the driving frame (35); an output shaft of the servo motor (36) is fixedly connected to the left end of the screw rod (37); a displacement seat (371) is slidably connected to the outer wall of the screw rod (37); a connecting rod (372) is fixedly mounted on the front side of the displacement seat (371); and the front side of the connecting rod (372) is fixedly connected to the back side of the sliding seat (34).

10. A grinding device for producing sheet NdFeB according to claim 8, characterized in that: A through hole is provided on the top of the grinding machine frame (1); the raised frame (38) is fixedly mounted on the bottom of the grinding machine frame (1) and is located below the through hole; a circulating water filter bin (381) is movably sleeved on the outer wall of the raised frame (38); a V-shaped plate (382) is fixedly mounted on the inner wall of the circulating water filter bin (381); a stainless steel filter screen (383) is fixedly mounted on the inner wall of the V-shaped plate (382); a reflux hole is provided on the bottom of the circulating water filter bin (381); a locking bolt is threadedly connected to the side of the circulating water filter bin (381); and a threaded end of the locking bolt is movably connected to the side of the raised frame (38).

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