A surface grinder for the production and processing of sintered rare earth permanent magnet materials

Abstract

The present invention relates to the technical field of permanent magnet material production, and in particular to a surface grinder for the production and processing of sintered rare earth permanent magnet materials, including a machine frame, a combined plate, a support plate, a top plate, etc. The front and rear sides of the top of the machine frame are both connected with combined plates, a support plate is connected between the two combined plates, and a top plate is jointly connected to the tops of the two combined plates. A grinding channel is formed between the combined plate, the support plate and the top plate. In the present invention, the upper and lower sides of the permanent magnet material can be ground by two first grinding wheels, the front and rear sides of the permanent magnet material can be ground by two second grinding wheels, and the left and right sides of the permanent magnet material can be ground by two third grinding wheels, automatically grinding the six surfaces of the permanent magnet material, reducing manual intervention, improving production efficiency, and ensuring that all surfaces can be uniformly stressed to achieve a consistent grinding effect.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet material production, in particular to a surface grinder for production and processing of sintered rare earth permanent magnet materials. Background Art

[0002] Sintered rare earth permanent magnet material is a permanent magnet material with high magnetic energy product and excellent magnetic properties. It is mainly composed of rare earth elements and transition metals. In the production process of sintered rare earth permanent magnet material, the sintered rare earth permanent magnet material is generally ground to remove burrs and oxide layers on the surface of the sintered rare earth permanent magnet material and improve the smoothness of the surface of the sintered rare earth permanent magnet material.

[0003] Permanent magnetic materials are generally cubes with six faces. However, current grinding devices can only grind a single face and cannot grind all faces at once. Subsequent manual flipping or robotic arm flipping operations are required. Multi-step operations will increase production costs and reduce production efficiency. Manual flipping is prone to errors, resulting in inconsistent grinding effects. Although robotic arms can improve the degree of automation, they have high maintenance costs and require a lot of resources. In addition, the flipping process of the robotic arm still requires time and precise control, and it is difficult to completely avoid surface damage or uneven grinding. Summary of the invention

[0004] In order to overcome the shortcomings that manual turning will increase production costs, reduce production efficiency, and easily cause errors in manual turning, resulting in inconsistent grinding effects, the present invention provides a surface grinder for the production and processing of sintered rare earth permanent magnet materials.

[0005] The technical solution is as follows: A surface grinder for the production and processing of sintered rare earth permanent magnet materials, including a machine frame, a combined plate, a support plate, a top plate, a first gearbox, a first grinding wheel, a first driving motor, a second gearbox, a second grinding wheel, a second driving motor, a guide frame, a sliding frame, a third gearbox, a third grinding wheel, a third driving motor, a feeding mechanism and a pushing mechanism. On both the front and rear sides of the top of the machine frame, combined plates are connected. A support plate is connected between the two combined plates. The two combined plates are jointly connected with a top plate at the top. A grinding channel is formed between the combined plate, the support plate and the top plate. A first gearbox is installed on the front combined plate. The first gearbox has two output shafts and one input shaft. On both output shafts of the first gearbox, first grinding wheels are connected. The upper first grinding wheel is rotatably connected to the top plate. The upper first grinding wheel passes through the top plate and extends into the grinding channel. The lower first grinding wheel is rotatably connected to the combined plate. The lower first grinding wheel passes through the support plate and extends into the grinding channel. A first driving motor is installed on the first gearbox. The output shaft of the first driving motor is connected to the input shaft of the first gearbox. A second gearbox is installed on the top of the top plate. The second gearbox has two output shafts and one input shaft. On both output shafts of the second gearbox, second grinding wheels are connected. The second grinding wheels are rotatably connected to the combined plate. The second grinding wheels pass through the combined plate and extend into the grinding channel. A second driving motor is installed on the second gearbox. The output shaft of the second driving motor is connected to the input shaft of the second gearbox. A guide frame is connected to the rear combined plate. A sliding frame is slidably connected to the guide frame. The sliding frame slidably penetrates through the combined plate, the support plate and the top plate. A third gearbox is installed on the sliding frame. The third gearbox has two output shafts and one input shaft. On both output shafts of the third gearbox, third grinding wheels are connected. The third grinding wheels are rotatably connected to the sliding frame. A third driving motor is installed on the third gearbox. The output shaft of the third driving motor is connected to the input shaft of the third gearbox. The feeding mechanism is used to push the permanent magnet material so that the first grinding wheel and the second grinding wheel grind the permanent magnet material. The pushing mechanism is used to push the third grinding wheel so that the third grinding wheel grinds the permanent magnet material.

[0006] As a preferred technical solution of the present invention, the feeding mechanism includes an installation frame, a cylinder, a pushing block, a box body and a blocking component. The two combined plates are jointly connected with an installation frame. The installation frame is connected to the top of the machine frame. A cylinder is installed on the top of the installation frame. A pushing block is connected to the telescopic rod of the cylinder. The pushing block is located in the grinding channel and is used to push the permanent magnet material. The two combined plates are jointly connected with a box body for storing the permanent magnet material. The blocking component is used to block the permanent magnet material in the box body.

[0007] As a preferred technical solution of the present invention, the blocking assembly includes a frame body, a guide rod, a baffle plate and a first spring. A frame body is connected to the two combined plates. A guide rod is connected inside the frame body. A baffle plate for blocking the permanent magnetic material in the box body is slidably connected to the guide rod. A first spring is connected between the frame body and the baffle plate.

[0008] As a preferred technical solution of the present invention, the pushing mechanism includes a second spring, a contact plate, a guide sleeve and a push plate. A second spring is connected between the guiding frame and the sliding frame. A contact plate is connected to the top of the sliding frame. Both the left and right sides of the contact plate are inclined surfaces. A guide sleeve is connected to the top of the rear combined plate. A push plate is slidably connected inside the guide sleeve. The push plate is connected to the pushing block. The push plate is used to push the contact plate so that the third grinding wheel moves, so that the third grinding wheel grinds the permanent magnetic material.

[0009] As a preferred technical solution of the present invention, a roller is further included. A roller is rotatably connected to the top of the baffle plate.

[0010] As a preferred technical solution of the present invention, a roller is further included. A roller is rotatably connected to the push plate. The roller contacts the inclined surface on the right side of the contact plate.

[0011] As a preferred technical solution of the present invention, a limiting plate is further included. A limiting plate for limiting the permanent magnetic material is connected inside the sliding frame.

[0012] As a preferred technical solution of the present invention, there are gaps on both the left and right sides of the box body.

[0013] As a preferred technical solution of the present invention, a dust collection mechanism is further included. The dust collection mechanism includes a first dust collector, a first dust collection pipe, a dust collection hood, a second dust collector, a second dust collection pipe, a third dust collector, a third dust collection pipe and a fourth dust collection pipe. A first dust collector is installed on the top of the frame. A first dust collection pipe is connected to the first dust collector. A dust collection hood is connected to the bottom of the support plate. The dust collection hood is connected and communicated with the first dust collection pipe. The dust collection hood contacts the first grinding wheel below. A second dust collector is installed on the top of the rear combined plate. A second dust collection pipe is connected to the second dust collector. The second dust collection pipe is connected to the rear combined plate and communicated with the grinding channel. A third dust collector is installed on the top of the front combined plate. A third dust collection pipe and a fourth dust collection pipe are connected to the third dust collector. The third dust collection pipe is connected to the front combined plate and communicated with the grinding channel. The fourth dust collection pipe is connected to the limiting plate.

[0014] Beneficial effects: The present invention can grind the upper and lower sides of the permanent magnetic material through two first grinding wheels, grind the front and rear sides of the permanent magnetic material through two second grinding wheels, and grind the left and right sides of the permanent magnetic material through two third grinding wheels, automatically grinding the six surfaces of the permanent magnetic material, reducing manual intervention, improving production efficiency, and being able to ensure that all surfaces can be uniformly stressed to achieve a consistent grinding effect. Brief Description of the Drawings

[0015] Figure 1 Shows a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 Shows a partial three-dimensional structural schematic diagram of the present invention.

[0017] Figure 3 Shows a three-dimensional structural schematic diagram of the combined plate, support plate and first grinding wheel of the present invention.

[0018] Figure 4 Shows a first three-dimensional structural schematic diagram of the pusher mechanism of the present invention.

[0019] Figure 5 Shows a second three-dimensional structural schematic diagram of the pusher mechanism of the present invention.

[0020] Figure 6 Shows a three-dimensional structural schematic diagram of the guide rod, baffle, first spring and roller of the present invention.

[0021] Figure 7 Shows a first three-dimensional structural schematic diagram of the pushing mechanism of the present invention.

[0022] Figure 8 Shows a second three-dimensional structural schematic diagram of the pushing mechanism of the present invention.

[0023] Figure 9 Shows a three-dimensional structural schematic diagram of the limit plate of the present invention.

[0024] Figure 10 Shows a three-dimensional structural schematic diagram of the dust suction mechanism of the present invention.

[0025] Figure 11 Shows a three-dimensional structural schematic diagram of the first vacuum cleaner, the first dust suction pipe and the dust suction hood of the present invention.

[0026] Figure 12 Shows a three-dimensional structural schematic diagram of the second dust suction pipe, the third dust suction pipe and the fourth dust suction pipe of the present invention.

[0027] Figure 13 Shows a three-dimensional structural schematic diagram of the fourth dust suction pipe of the present invention.

[0028] The labels in the figure are: 1 - frame, 2 - combined plate, 3 - support plate, 4 - top plate, 5 - grinding channel, 6 - first gearbox, 7 - first grinding wheel, 8 - first driving motor, 9 - second gearbox, 10 - second grinding wheel, 11 - second driving motor, 12 - guide frame, 13 - sliding frame, 14 - third gearbox, 15 - third grinding wheel, 16 - third driving motor, 17 - mounting frame, 18 - cylinder, 19 - pushing block, 20 - box body, 21 - frame body, 22 - guide rod, 23 - baffle plate, 24 - first spring, 25 - second spring, 26 - contact plate, 261 - inclined surface, 27 - guide sleeve, 28 - pushing plate, 29 - roller, 30 - roller wheel, 31 - limiting plate, 32 - notch, 33 - first dust collector, 34 - first dust suction pipe, 35 - dust suction hood, 36 - second dust collector, 37 - second dust suction pipe, 38 - third dust collector, 39 - third dust suction pipe, 40 - fourth dust suction pipe. Detailed implementation manners

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners, but the protection scope and application scope of the present invention are not limited.

[0030] Refer to Figures 1-8, a surface grinder for the production and processing of sintered rare earth permanent magnet materials, including a machine frame 1, a combined plate 2, a support plate 3, a top plate 4, a first gearbox 6, a first grinding wheel 7, a first driving motor 8, a second gearbox 9, a second grinding wheel 10, a second driving motor 11, a guide frame 12, a sliding frame 13, a third gearbox 14, a third grinding wheel 15, a third driving motor 16, a feeding mechanism and a pushing mechanism. On both the front and rear sides of the top of the machine frame 1, combined plates 2 are connected by bolts. A support plate 3 is connected between the two combined plates 2. The two combined plates 2 are jointly connected with a top plate 4 at the top. A grinding channel 5 is formed between the combined plate 2, the support plate 3 and the top plate 4. The size of the grinding channel 5 is the same as that of the permanent magnet material. When the permanent magnet material moves in the grinding channel 5, the combined plate 2, the support plate 3 and the top plate 4 can limit the permanent magnet material. On the upper right side of the front combined plate 2, a first gearbox 6 is installed by bolts. The first gearbox 6 has two output shafts and one input shaft. First grinding wheels 7 are connected to both output shafts of the first gearbox 6. The upper first grinding wheel 7 is rotationally connected to the top plate 4. The upper first grinding wheel 7 passes through the top plate 4 and extends into the grinding channel 5. The top plate 4 can provide support for the upper first grinding wheel 7 to improve the stability of the upper first grinding wheel 7. The lower first grinding wheel 7 is rotationally connected to the combined plate 2. The lower first grinding wheel 7 passes through the support plate 3 and extends into the grinding channel 5. The combined plate 2 can provide support for the lower first grinding wheel 7 to improve the stability of the lower first grinding wheel 7. On the upper front side of the first gearbox 6, a first driving motor 8 is installed by bolts. The output shaft of the first driving motor 8 is connected to the input shaft of the first gearbox 6. In the middle of the top of the top plate 4, a second gearbox 9 is installed by bolts. The second gearbox 9 has two output shafts and one input shaft. Second grinding wheels 10 are connected to both output shafts of the second gearbox 9. The second grinding wheels 10 are rotationally connected to the combined plate 2. The two second grinding wheels 10 respectively pass through the two combined plates 2 and extend into the grinding channel 5. The combined plate 2 can provide support for the second grinding wheels 10 to improve the stability of the second grinding wheels 10. On the front side of the top of the second gearbox 9, a second driving motor 11 is installed by bolts. The output shaft of the second driving motor 11 is connected to the input shaft of the second gearbox 9. On the left part of the rear side of the rear combined plate 2, a guide frame 12 is connected. A sliding frame 13 is slidably connected to the guide frame 12. The sliding frame 13 slidably penetrates the combined plate 2, the support plate 3 and the top plate 4. On the upper front side of the sliding frame 13, a third gearbox 14 is installed by bolts. The third gearbox 14 has two output shafts and one input shaft. Third grinding wheels 15 are connected to both output shafts of the third gearbox 14. The third grinding wheels 15 are rotationally connected to the sliding frame 13. The sliding frame 13 can provide support for the third grinding wheels 15 to improve the stability of the third grinding wheels 15. On the upper right side of the top of the third gearbox 14, a third driving motor 16 is installed by bolts. The output shaft of the third driving motor 16 is connected to the input shaft of the third gearbox 14. The feeding mechanism is used to push the permanent magnet material.The first grinding wheel 7 and the second grinding wheel 10 are used to grind the permanent magnet material, and a pushing mechanism is used to push the third grinding wheel 15 so that the third grinding wheel 15 grinds the permanent magnet material.

[0031] Referring to Figures 4-6 , the pusher mechanism includes a mounting frame 17, a cylinder 18, a pusher block 19, a box body 20 and a blocking assembly. The two combined plates 2 are jointly connected to the mounting frame 17 on the right side. The mounting frame 17 is connected to the top of the frame 1. The cylinder 18 is mounted on the top of the mounting frame 17 by bolts. The left end of the telescopic rod of the cylinder 18 is connected to the pusher block 19. The pusher block 19 is located in the grinding channel 5. The two combined plates 2 are jointly connected to the box body 20 on the top right side. There are notches 32 on both the left and right sides of the box body 20. The notches 32 of the box body 20 can accommodate workers to manually stack the permanent magnet materials in the box body 20, avoiding violent collisions between the permanent magnet materials caused by directly putting the permanent magnet materials into the box body 20 from the opening of the box body 20. The blocking assembly is used to block the permanent magnet materials in the box body 20.

[0032] Referring to Figures 4-6 , the blocking assembly includes a frame body 21, guide rods 22, a baffle 23 and a first spring 24. The two combined plates 2 are jointly connected to the frame body 21 on the right side. Two guide rods 22 are connected to the right side inside the frame body 21. The two guide rods 22 are symmetrically arranged front and back. The baffle 23 is slidably connected to the two guide rods 22. The left side of the baffle 23 contacts the right side of the pusher block 19. The two guide rods 22 jointly guide the baffle 23, which can improve the stability of the baffle 23. The first springs 24 are sleeved on the guide rods 22. The two ends of the first spring 24 are respectively connected to the frame body 21 and the baffle 23, and the guide rods 22 can support the first spring 24 to prevent the first spring 24 from bending.

[0033] Referring to Figure 7 and Figure 8 , the pushing mechanism includes a second spring 25, a contact plate 26, a guide sleeve 27 and a push plate 28. Four second springs 25 are sleeved on the guide frame 12. The two ends of the second spring 25 are respectively connected to the guide frame 12 and the sliding frame 13, and the guide frame 12 can support the second spring 25 to prevent the second spring 25 from bending. The contact plate 26 is connected to the top of the sliding frame 13. Both the left and right sides of the contact plate 26 are inclined surfaces 261. The rear side of the rear combined plate 2 is connected to the guide sleeve 27 by bolts. The push plate 28 is slidably connected in the guide sleeve 27. The push plate 28 is connected to the right side of the pusher block 19. The guide sleeve 27 can guide the push plate 28 to make the movement of the push plate 28 smoother.

[0034] Referring to Figure 6, it further includes a roller 29. The roller 29 is rotatably connected to the top of the baffle 23 at equal intervals. During the process of the baffle 23 moving below the box body 20, the roller 29 will roll on the permanent magnetic material inside the box body 20, avoiding friction between the baffle 23 and the permanent magnetic material, thereby being able to avoid wear of the baffle 23.

[0035] Refer to Figure 8 , it further includes a roller 30. The roller 30 is rotatably connected to the left side of the push plate 28. The roller 30 contacts the inclined surface 261 on the right side of the contact plate 26. When the roller 30 pushes the contact plate 26, the roller 30 will roll on the inclined surface 261 of the contact plate 26, reducing the frictional resistance between the roller 30 and the contact plate 26.

[0036] Refer to Figure 9 , it further includes a limiting plate 31. The limiting plates 31 are connected to the left and right sides inside the sliding frame 13.

[0037] Initially, the left side of the baffle 23 is in contact with the right side of the pusher block 19, and the first spring 24 is in a compressed state; the staff puts the permanent magnet material into the box body 20, and the lowermost permanent magnet material will fall into the grinding channel 5. Start the first drive motor 8, the second drive motor 11, and the third drive motor 16. The output shaft of the first drive motor 8 drives the first grinding wheel 7 to rotate through the first gearbox 6, the output shaft of the second drive motor 11 drives the second grinding wheel 10 to rotate through the second gearbox 9, and the output shaft of the third drive motor 16 drives the third grinding wheel 15 to rotate through the third gearbox 14. Control the telescopic rod of the cylinder 18 to extend, driving the pusher block 19 to move leftward. The pusher block 19 pushes the permanent magnet material in the grinding channel 5 to move leftward. The two first grinding wheels 7 grind the upper and lower sides of the permanent magnet material, and the two second grinding wheels 10 grind the front and back sides of the permanent magnet material. The pusher block 19 and the baffle 23 are separated from contact. Under the action of the first spring 24, the baffle 23 moves leftward. The baffle 23 will move below the box body 20. The baffle 23 can block the permanent magnet material in the box body 20 to prevent the permanent magnet material in the box body 20 from falling onto the telescopic rod of the cylinder 18. The leftward movement of the pusher block 19 can also drive the push plate 28 to move leftward. The push plate 28 drives the roller 30 to move leftward. The roller 30 contacts the inclined surface 261 on the right side of the contact plate 26. The roller 30 will push the contact plate 26 to move backward. The contact plate 26 drives the sliding frame 13 to move backward. The second spring 25 is compressed. The sliding frame 13 drives the third grinding wheel 15 to move backward. Subsequently, the roller 30 contacts the inclined surface 261 on the left side of the contact plate 26. The roller 30 no longer pushes the contact plate 26. Under the action of the second spring 25, the sliding frame 13 and the third grinding wheel 15 move forward. When the roller 30 is separated from the inclined surface 261 on the left side of the contact plate 26, the third grinding wheel 15 just moves forward to the initial position. At this time, the front and back sides of the permanent magnet material have been ground. The telescopic rod of the cylinder 18 continues to extend, and the pusher block 19 continues to push the permanent magnet material leftward, pushing the permanent magnet material into the sliding frame 13. Then control the telescopic rod of the cylinder 18 to shorten, driving the pusher block 19 to move rightward. The pusher block 19 drives the push plate 28 and the roller 30 to contact. The roller 30 contacts the inclined surface 261 on the left side of the contact plate 26. The roller 30 will push the contact plate 26 to move backward. The contact plate 26 drives the sliding frame 13, the limiting plate 31, and the third grinding wheel 15 to move backward. The limiting plate 31 can limit the permanent magnet material to prevent the position of the permanent magnet material from shifting. Subsequently, the two third grinding wheels 15 grind the left and right sides of the permanent magnet material. In this way, it can automatically grind the six surfaces of the permanent magnet material, reduce manual intervention, improve production efficiency, and ensure that all surfaces can be evenly stressed to achieve a consistent grinding effect. Subsequently, the roller 30 contacts the inclined surface 261 on the right side of the contact plate 26. The roller 30 no longer pushes the contact plate 26. Under the action of the second spring 25, the sliding frame 13 and the third grinding wheel 15 move forward.After the roller 30 disengages from the inclined surface 261 on the right side of the contact plate 26, the third grinding wheel 15 just moves forward to the initial position. The telescopic rod of the cylinder 18 continues to shorten, and the pusher block 19 continues to move to the right. The pusher block 19 pushes the baffle 23 to move to the right, and the baffle 23 will move away from the bottom of the box body 20. The permanent magnetic material in the box body 20 will fall into the grinding channel 5. At this time, the ground permanent magnetic material is still located in the sliding rack 13. The subsequent permanent magnetic material will push the ground permanent magnetic material and push the ground permanent magnetic material out of the sliding rack 13 and the grinding channel 5. A conveyor belt can be arranged at the discharge port of the grinding channel 5 to convey the ground permanent magnetic material to other processing positions through the conveyor belt.

[0038] Referring to Figures 10-13 It further includes a dust suction mechanism. The dust suction mechanism includes a first vacuum cleaner 33, a first dust suction pipe 34, a dust suction hood 35, a second vacuum cleaner 36, a second dust suction pipe 37, a third vacuum cleaner 38, a third dust suction pipe 39 and a fourth dust suction pipe 40. The first vacuum cleaner 33 is installed on the top of the frame 1 through bolts. Three first dust suction pipes 34 are connected to the left side of the first vacuum cleaner 33. The dust suction hood 35 is connected to the bottom of the support plate 3. The three first dust suction pipes 34 are all connected to the bottom of the dust suction hood 35, and the first dust suction pipe 34 and the dust suction hood 35 are communicated. The dust suction hood 35 contacts the first grinding wheel 7 below. The second vacuum cleaner 36 is installed on the top of the rear combination plate 2 through bolts. Three second dust suction pipes 37 are connected to the front side of the second vacuum cleaner 36. The three second dust suction pipes 37 are all connected to the rear combination plate 2 and communicated with the grinding channel 5. The third vacuum cleaner 38 is installed on the top of the front combination plate 2 through bolts. Three third dust suction pipes 39 are connected to the rear side of the third vacuum cleaner 38. The three third dust suction pipes 39 are all connected to the front combination plate 2 and communicated with the grinding channel 5. Two groups of fourth dust suction pipes 40 are connected to the rear side of the third vacuum cleaner 38. Each group has three fourth dust suction pipes 40. The two groups of fourth dust suction pipes 40 are respectively connected to the left and right limiting plates 31. The fourth dust suction pipe 40 is a flexible pipe to ensure that the sliding rack 13 can move back and forth smoothly.

[0039] When grinding the permanent magnetic material, debris will be generated. Start the first vacuum cleaner 33, the second vacuum cleaner 36 and the third vacuum cleaner 38. The first vacuum cleaner 33 sucks the debris through the first dust suction pipe 34 and the dust suction hood 35. The second vacuum cleaner 36 sucks the debris through the second dust suction pipe 37. The third vacuum cleaner 38 sucks the debris through the third dust suction pipe 39 and the fourth dust suction pipe 40. The debris generated by the grinding of the first grinding wheel 7 will be sucked into the first vacuum cleaner 33. The debris generated by the grinding of the second grinding wheel 10 at the rear side will be sucked into the second vacuum cleaner 36. The debris generated by the grinding of the second grinding wheel 10 at the front side will be sucked into the third vacuum cleaner 38. The debris generated by the grinding of the third grinding wheel 15 will be sucked into the third vacuum cleaner 38 to ensure the grinding effect.

[0040] The above are only examples of the present invention and are not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included within the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the prior art well-known to those skilled in the relevant technical field.

Claims

1. A surface grinding machine for the production and processing of sintered rare earth permanent magnet materials, comprising a machine frame (1), a combined plate (2), a support plate (3) and a top plate (4). The combined plates (2) are connected to both the front and rear sides of the top of the machine frame (1). A support plate (3) is connected between the two combined plates (2). The top plate (4) is commonly connected to the tops of the two combined plates (2). It is characterized in that, It also includes a first gearbox (6), a first grinding wheel (7), a first driving motor (8), a second gearbox (9), a second grinding wheel (10), a second driving motor (11), a guide frame (12), a sliding frame (13), a third gearbox (14), a third grinding wheel (15), a third driving motor (16), a feeding mechanism and a pushing mechanism. A grinding channel (5) is formed between the combined plate (2), the support plate (3) and the top plate (4). The first gearbox (6) is installed on the front combined plate (2). The first gearbox (6) has two output shafts and one input shaft. The two output shafts of the first gearbox (6) are both connected with the first grinding wheel (7). The upper first grinding wheel (7) is rotatably connected with the top plate (4). The upper first grinding wheel (7) passes through the top plate (4) and extends into the grinding channel (5). The lower first grinding wheel (7) is rotatably connected with the combined plate (2). The lower first grinding wheel (7) passes through the support plate (3) and extends into the grinding channel (5). The first driving motor (8) is installed on the first gearbox (6). The output shaft of the first driving motor (8) is connected with the input shaft of the first gearbox (6). The second gearbox (9) is installed on the top of the top plate (4). The second gearbox (9) has two output shafts and one input shaft. The two output shafts of the second gearbox (9) are both connected with the second grinding wheel (10). The second grinding wheel (10) is rotatably connected with the combined plate (2). The second grinding wheel (10) passes through the combined plate (2) and extends into the grinding channel (5). The second driving motor (11) is installed on the second gearbox (9). The output shaft of the second driving motor (11) is connected with the input shaft of the second gearbox (9). The guide frame (12) is connected to the rear combined plate (2). The sliding frame (13) is slidably connected to the guide frame (12). The sliding frame (13) slidably penetrates through the combined plate (2), the support plate (3) and the top plate (4). The third gearbox (14) is installed on the sliding frame (13). The third gearbox (14) has two output shafts and one input shaft. The two output shafts of the third gearbox (14) are both connected with the third grinding wheel (15). The third grinding wheel (15) is rotatably connected with the sliding frame (13). The third driving motor (16) is installed on the third gearbox (14). The output shaft of the third driving motor (16) is connected with the input shaft of the third gearbox (14). The feeding mechanism is used to push the permanent magnetic material so that the first grinding wheel (7) and the second grinding wheel (10) grind the permanent magnetic material. The pushing mechanism is used to push the third grinding wheel (15) so that the third grinding wheel (15) grinds the permanent magnetic material; The material pushing mechanism includes a mounting frame (17), a cylinder (18), a material pushing block (19), a box body (20) and a blocking assembly. A mounting frame (17) is jointly connected to the two combined plates (2). The mounting frame (17) is connected to the top of the machine frame (1). A cylinder (18) is mounted on the top of the mounting frame (17). A material pushing block (19) is connected to the telescopic rod of the cylinder (18). The material pushing block (19) is located in the grinding channel (5). The material pushing block (19) is used to push the permanent magnet material. A box body (20) for storing the permanent magnet material is jointly connected to the two combined plates (2). The blocking assembly is used to block the permanent magnet material in the box body (20). The pushing mechanism includes a second spring (25), a contact plate (26), a guide sleeve (27) and a push plate (28). A second spring (25) is connected between the guide frame (12) and the sliding frame (13). A contact plate (26) is connected to the top of the sliding frame (13). Both the left and right sides of the contact plate (26) are inclined surfaces (261). A guide sleeve (27) is connected to the top of the rear combined plate (2). A push plate (28) is slidably connected in the guide sleeve (27). The push plate (28) is connected to the material pushing block (19). The push plate (28) is used to push the contact plate (26) to move the third grinding wheel (15) so that the third grinding wheel (15) grinds the permanent magnet material.

2. The surface grinder for the production and processing of sintered rare earth permanent magnet materials according to claim 1, wherein, The blocking assembly includes a frame body (21), a guide rod (22), a baffle plate (23) and a first spring (24). A frame body (21) is jointly connected to the two combined plates (2). A guide rod (22) is connected inside the frame body (21). A baffle plate (23) for blocking the permanent magnet material in the box body (20) is slidably connected to the guide rod (22). A first spring (24) is connected between the frame body (21) and the baffle plate (23).

3. A surface grinder for the production and processing of sintered rare earth permanent magnet materials according to claim 2, characterized in that, It also includes a roller (29). A roller (29) is rotatably connected to the top of the baffle plate (23).

4. A surface grinder for the production and processing of sintered rare earth permanent magnet materials according to claim 3, characterized in that, It also includes a roller (30). A roller (30) is rotatably connected to the push plate (28). The roller (30) contacts the inclined surface (261) on the right side of the contact plate (26).

5. A surface grinder for the production and processing of sintered rare earth permanent magnet materials according to claim 4, characterized in that, It also includes a limiting plate (31). A limiting plate (31) for limiting the permanent magnet material is connected inside the sliding frame (13).

6. The surface grinder for the production and processing of sintered rare earth permanent magnet materials according to claim 5, characterized in that, There are notches (32) on both the left and right sides of the box body (20).

7. A surface grinding machine for the production and processing of sintered rare earth permanent magnet materials according to claim 6, characterized in that, It further includes a dust suction mechanism, which includes a first vacuum cleaner (33), a first dust suction pipe (34), a dust suction hood (35), a second vacuum cleaner (36), a second dust suction pipe (37), a third vacuum cleaner (38), a third dust suction pipe (39) and a fourth dust suction pipe (40). The first vacuum cleaner (33) is installed on the top of the frame (1). The first dust suction pipe (34) is connected to the first vacuum cleaner (33). The dust suction hood (35) is connected to the bottom of the support plate (3). The dust suction hood (35) is connected and communicated with the first dust suction pipe (34), and the dust suction hood (35) contacts the first grinding wheel (7) below. The second vacuum cleaner (36) is installed on the top of the combined plate (2) at the rear. The second dust suction pipe (37) is connected to the second vacuum cleaner (36). The second dust suction pipe (37) is connected to the combined plate (2) at the rear and communicated with the grinding channel (5). The third vacuum cleaner (38) is installed on the top of the combined plate (2) at the front. The third dust suction pipe (39) and the fourth dust suction pipe (40) are connected to the third vacuum cleaner (38). The third dust suction pipe (39) is connected to the combined plate (2) at the front and communicated with the grinding channel (5). The fourth dust suction pipe (40) is connected to the limiting plate (31).

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