Grain boundary permeation device for sintered neodymium iron boron

Abstract

The invention relates to the technical field of magnetic materials, in particular to a grain boundary permeation device for sintered neodymium iron boron, which comprises a C-shaped workbench, and support blocks are fixedly arranged on the front and rear sides of the left and right sides of the top of a lower transverse plate of the C-shaped workbench. According to the grain boundary permeation device for sintered neodymium iron boron, two rods shaped like a Chinese character'zhong 'are closed towards the middle, a first compression spring is compressed, the rods shaped like the Chinese character'zhong' are moved out of inserting grooves, threaded rods are released from being fixed, and the two threaded rods are rotated, so that a rectangular frame can deflect when a fixing plate drives a transverse rod on the lower side of the rectangular frame to move; and then the connecting block drives the machining table to move upwards to the appropriate machining height according to the magnetic steel of different thicknesses, then the rod shaped like the Chinese character'zhong 'is loosened, the rod shaped like the Chinese character'zhong' moves into the appropriate inserting groove through the resilience force of the first compression spring, and therefore the bearing device for magnetic steel machining does not need to be replaced. And the efficiency of coating the magnetic steel with different thicknesses is improved.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic materials, in particular to a grain boundary penetration device for sintered NdFeB. Background Art

[0002] As the third generation of rare earth permanent magnets, sintered NdFeB magnets are mainly used in the automotive field with grades 38SH-45EH. In order to obtain magnets with high intrinsic coercivity, it is necessary to add different amounts of medium rare earths to the distribution system. Although the intrinsic coercivity meets market requirements, sufficient heavy rare earths need to be added. As a result, the maximum magnetic energy product is significantly reduced. Although the brand of magnets required by customers can be obtained, the cost has remained high. In order to meet market demand, in recent years, some rare earth permanent magnet experts and enterprise technical R&D personnel have been committed to studying how to improve the coercivity. By refining the grains and optimizing the process to adjust the grain boundary equalization process, however, the performance improvement of the above processes is limited, and the grain refinement process is extremely demanding for the control of the production process. Through the unremitting efforts of scientific researchers and enterprise technical R&D personnel, in recent years, grain boundary penetration has been adopted. Heavy rare earths are coated on the surface of magnets close to the finished product size, and then a penetration layer is formed on the surface of the magnet through a suitable heat treatment process. This greatly improves the coercivity of the magnet and improves the performance of the magnet while keeping the remanence almost unchanged.

[0003] In the existing magnetic steel grain boundary penetration coating process, in order to improve the magnetic properties, the penetrant is generally applied to the workpiece surface by spraying, screen printing or dipping. However, since different types of magnetic steel often have significant differences in size, shape or physical properties, when the production line needs to switch between magnetic steel product types of different thicknesses, it is usually necessary to disassemble and replace the special device used to carry the workpiece on the equipment to adapt to the specific requirements of the new product. This necessary changeover operation, especially the repeated disassembly and assembly process of the carrying device, not only increases the complexity of the operation, but also directly leads to the loss of effective operating time of the equipment, thereby reducing the overall efficiency of continuous coating processing of magnetic steel of different thicknesses on the production line.

[0004] In view of this, we propose a grain boundary infiltration device for sintered NdFeB. Summary of the Invention

[0005] The purpose of the present invention is to provide a grain boundary infiltration device for sintered NdFeB to solve the problem raised in the above background technology that different types of magnetic steel often have significant differences in size, shape or physical properties. When the production line needs to switch between magnetic steel product types of different thicknesses, it is usually necessary to disassemble and replace the special device for carrying the workpiece on the equipment to adapt to the specific requirements of the new product. This necessary change of type operation, especially the repeated disassembly and assembly process of the carrying device, not only increases the complexity of the operation, but also directly leads to the loss of effective operating time of the equipment, thereby reducing the overall efficiency of continuous coating processing of magnetic steel of different thicknesses on the production line. To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a grain boundary infiltration device for sintered NdFeB, comprising a C-shaped workbench, wherein support blocks are fixedly provided on the front and rear sides of the left and right sides of the top of the lower horizontal plate of the C-shaped workbench, four support blocks are formed into a group of two, and an I-shaped connecting plate is rotatably provided on each side opposite to each other, two limit frames are fixedly provided in the middle of the top surface of the lower horizontal plate of the C-shaped workbench, and a displacement mechanism for moving the magnetic steel is slidably provided inside the two limit frames, a magnetic stirring frame is fixedly provided on the top of the upper horizontal plate of the C-shaped workbench, a movable groove is provided inside the upper horizontal plate of the C-shaped workbench, a spraying mechanism is slidably provided inside the movable groove, a motor is fixedly provided on the left side of the upper horizontal plate of the C-shaped workbench, and the right end of the motor passes through the interior of the movable groove and is fixedly provided with a reciprocating screw.

[0006] Preferably, the displacement mechanism includes two rectangular frames, and the two horizontal bars on the lower sides of the two rectangular frames are slidably arranged inside the two limit frames respectively. The front and rear sides of the upper horizontal plate of the I-shaped connecting plate are rotatably connected to the opposite sides of the two vertical bars of the rectangular frame respectively. The front and rear ends of the two upper horizontal bars of the rectangular frame are rotatably provided with connecting blocks, and the tops of the four connecting blocks are fixedly provided with processing tables.

[0007] Preferably, a rectangular groove is provided on the top of the limit frame, and a moving block is slidingly provided inside the rectangular groove, and the lower side of the moving block is fixedly matched with the top of the lower cross bar of the rectangular frame. A fixed plate is fixedly provided on the opposite side of the top of the two limit frames, and a threaded rod is rotatably provided inside the fixed plate. The opposite ends of the two threaded rods respectively pass through the side faces of the two moving blocks, and the opposite sides of the two threaded rods are fixedly connected to a circular plate, and a center-shaped rod is movably inserted into the side face of the circular plate, and a first compression spring is fixedly provided on the side face of the vertical rod of the center-shaped rod, and one end of the first compression spring is fixedly connected to the side face of the circular plate.

[0008] Preferably, a slot is provided on the side of the fixed plate, and the number of the slots is several. The slots are equidistantly arranged in a ring shape on the opposite sides of the two fixed plates. One end of the center-shaped rod slides with the inside of the slot, and a long slot is provided on the opposite sides of the two center-shaped rods.

[0009] Preferably, a round rod is slidingly provided inside the long groove, a second compression spring is fixedly provided at one end of the round rod, one end of the second compression spring is fixedly matched with the inside of the long groove, a hemispherical block is fixedly provided on the left side of the round rod on the right side, and a hemispherical groove is opened on the right side of the round rod on the left side, and the side of the hemispherical groove is in contact with the side of the hemispherical block.

[0010] Preferably, the spraying mechanism includes a connecting bar, which is slidably arranged inside a movable groove, and the shape of the inside of the movable groove and the shape of the connecting bar are both cross-shaped. A spray gun is fixedly arranged at the bottom of the connecting bar, and a square groove is provided on the left side of the connecting bar, and an L-shaped block is slidably provided inside the square groove, and an I-shaped groove is provided inside the transverse block of the L-shaped block, and C-shaped bars are slidably provided on the front and rear sides of the inner wall of the I-shaped groove, and a third compression spring is fixedly provided on the opposite side of the two C-shaped bars, and fixed grooves are provided on the upper and lower sides of the front and rear sides of the inner wall of the square groove, and the four fixed grooves are grouped into two, and two of the fixed grooves are respectively slidably matched with the side faces of the two vertical bars on the right side of the two C-shaped bars.

[0011] Preferably, a cleaning strip is fixedly provided at the bottom of the vertical block of the L-shaped block, the bottom of the cleaning strip is slidably engaged with the top of the processing table, and a 30° bevel angle is provided on both sides of the middle of the bottom surface of the cleaning strip.

[0012] Preferably, a clamping frame is provided on the top of the processing table, and a Z-shaped rod is rotatably provided in the middle of the left and right sides of the clamping frame, and the two front side cross bars of the two Z-shaped rods respectively extend to the outside of the processing table, and the front sides of the front side cross bars of the two Z-shaped rods are fixedly provided with a C-shaped plate, and long strips are slidably provided on both sides of the front and back inner walls of the clamping frame, and sliding grooves matching the long strips are provided on both sides of the front and back inner walls of the clamping frame, and a force spring is fixedly provided on the side opposite to the sliding groove and the long strip, and the front and back sides of the side of the long strip are movably plugged with C-shaped clamping strips, and the side surfaces of the vertical bars of the C-shaped clamping strip are fixedly provided with tension springs, and C-shaped limit strips are provided on both sides of the left and right sides of the clamping frame, and the interior of the C-shaped limit strip is slidably provided with a limit block matching it.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by closing the two Chinese-character shaped rods toward the middle and compressing the first compression spring, the Chinese-character shaped rod is moved out of the slot, the fixation of the threaded rod is released, and the two threaded rods are rotated, so that the fixed plate drives the lower cross bar of the rectangular frame so that the rectangular frame can deflect when moving, and then the processing table is driven to move upward to a suitable processing height according to the different thicknesses of magnetic steel through the connecting block. Then, the Chinese-character shaped rod is relaxed, so that the Chinese-character shaped rod is moved to the inside of the suitable slot by the rebound force of the first compression spring, thereby increasing the efficiency of coating magnetic steel of different thicknesses without replacing the bearing device for magnetic steel processing.

[0014] In the present invention, by moving the two C-shaped bars toward the middle at the same time, compressing the third compression spring, and moving the two vertical bars on the right side of the C-shaped bar out of the two upper fixed grooves, the fixation of the L-shaped block is released, and the C-shaped bar is driven by the L-shaped block to move downward to the bottom of the inner wall of the square groove, and the C-shaped bar is relaxed, so that the C-shaped bar is reset and moved into the two lower fixed grooves by the third compression spring. At this time, the cleaning bar moves to contact the top of the processing table, and then the reciprocating screw rod is driven by the motor to rotate, so that part of the metal slurry splashed on the top of the processing table can be quickly scraped out. At the same time, by fine-tuning the two The threaded rod can be used to coat magnets with small height differences. When the processing table moves down to the limit position, the two Z-shaped rods and the clamping frame are driven to deflect upward by the C-shaped plate. At the same time, the two limit blocks and the C-shaped limit strip are used to prevent the clamping frame from swinging back and forth. When the clamping frame is deflected to be perpendicular to the processing table, the limit block continues to move toward the front of the C-shaped limit strip, causing the magnet on the upper side of the clamping frame to flip over, and then quickly coating the other side of the magnet. At the same time, the horizontal bar of the C-shaped clamp can be used to achieve point-to-point fixation of the magnet, and then coating the side of the magnet.

[0015] In the present invention, one of the two round rods is moved into the long slot, the second compression spring is compressed, and then the corresponding I-shaped rod is stretched and the first compression spring is compressed, so that one end of the cross rod of the I-shaped rod is moved out from the slot, and the fixation of one of the threaded rods is released. The threaded rod that is released is rotated, and the lower cross rod of the rectangular frame is driven to move in the limit frame through the fixing plate. At the same time, the rectangular frame is limited by the support block and the I-shaped connecting plate, so that the rectangular frame is deflected, and the processing table on its upper side is tilted, so that the side of the magnetic steel can be easily coated, and at the same time, part of the alloy slurry on the processing table can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the displacement mechanism of the present invention; Figure 3 Schematic diagram of the partial three-dimensional structure of the displacement mechanism of the present invention Figure 1 ; Figure 4 Schematic diagram of the partial three-dimensional structure of the displacement mechanism of the present invention Figure 2 ; Figure 5 It is a partial three-dimensional structure expansion diagram of the displacement mechanism of the present invention; Figure 6 It is a partial three-dimensional structural diagram of the C-shaped workbench of the present invention; Figure 7 Schematic cross-sectional view of the three-dimensional structure of the C-shaped workbench of the present invention; Figure 8 It is a partial three-dimensional structure expansion diagram of the spraying mechanism of the present invention; Figure 9 It is a cross-sectional view of the three-dimensional structure of the spraying mechanism of the present invention; Figure 10 It is a schematic diagram of a partial three-dimensional structure of a processing table of the present invention; Figure 11 It is a partial three-dimensional structure expansion diagram of the processing table of the present invention.

[0017] In the figure: 1. C-shaped workbench; 2. Support block; 3. I-shaped connecting plate; 4. Limiting frame; 401. Rectangular groove; 402. Moving block; 403. Fixed plate; 404. Threaded rod; 405. Round plate; 406. Middle-shaped rod; 407. First compression spring; 408. Slot; 409. Long groove; 4010. Round rod; 4011. Second compression spring; 4012. Hemispherical block; 4013. Hemispherical groove; 5. Displacement mechanism; 501. Rectangular frame; 502. Connecting block; 503. Processing table; 504. Clamping frame; 50 5. Z-shaped rod; 506. Slide groove; 507. Force spring; 508. C-shaped clamp; 509. Tension spring; 5010. C-shaped limit strip; 5011. Limit block; 5012. Long strip; 5013. C-shaped plate; 6. Magnetic stirring frame; 7. Moving groove; 8. Spraying mechanism; 801. Connecting strip; 802. Spray gun; 803. Square groove; 804. L-shaped block; 805. I-shaped groove; 806. C-shaped strip; 807. Third compression spring; 808. Fixed groove; 809. Cleaning strip; 9. Motor; 10. Reciprocating screw. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technical personnel in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] See also Figures 1 to 11The present invention provides a technical solution: a grain boundary infiltration device for sintered NdFeB, a C-shaped workbench 1, support blocks 2 are fixedly provided on the front and rear sides of the left and right sides of the top of the lower horizontal plate of the C-shaped workbench 1, four support blocks 2 are grouped into two, and an I-shaped connecting plate 3 is rotatably provided on each side opposite to each other, two limit frames 4 are fixedly provided in the middle of the top surface of the lower horizontal plate of the C-shaped workbench 1, and a displacement mechanism 5 for moving the magnetic steel is slidably provided inside the two limit frames 4, a magnetic stirring frame 6 is fixedly provided on the top of the upper horizontal plate of the C-shaped workbench 1, a moving groove 7 is opened inside the upper horizontal plate of the C-shaped workbench 1, and a spraying mechanism 8 is slidably provided inside the moving groove 7, a motor 9 is fixedly provided on the left side of the upper horizontal plate of the C-shaped workbench 1, and the right end of the motor 9 passes through the interior of the moving groove 7 and is fixedly provided with a reciprocating screw rod 10.

[0020] Example 1;

[0021] See also Figures 1 to 4 , this embodiment provides a technical solution: The displacement mechanism 5 includes two rectangular frames 501. The two horizontal bars on the lower sides of the two rectangular frames 501 are slidably arranged inside the two limit frames 4. The front and rear sides of the upper horizontal plate of the I-shaped connecting plate 3 are respectively rotatably connected to the opposite sides of the two vertical bars of the rectangular frames 501. The front and rear ends of the two upper horizontal bars of the rectangular frames 501 are rotatably provided with connecting blocks 502. The tops of the four connecting blocks 502 are fixedly provided with processing tables 503. A rectangular groove 401 is provided on the top of the limit frame 4, and a moving block 402 is slidingly provided inside the rectangular groove 401. The lower side of the moving block 402 is fixedly matched with the top of the lower cross bar of the rectangular frame 501. A fixed plate 403 is fixedly provided on the opposite side of the top of the two limit frames 4. A threaded rod 404 is rotatably provided inside the fixed plate 403. The opposite ends of the two threaded rods 404 respectively pass through the sides of the two moving blocks 402. The opposite sides of the two threaded rods 404 are fixedly connected with a circular plate 405. A middle-shaped rod 406 is movably inserted into the side of the circular plate 405. A first compression spring 407 is fixedly provided on the side of the vertical rod of the middle-shaped rod 406. One end of the first compression spring 407 is fixedly connected to the side of the circular plate 405. In this embodiment, when the fixation between the two threaded rods 404 is released, the two threaded rods 404 are driven to rotate simultaneously by the two I-shaped rods 406 through the circular plate 405. At the same time, the moving block 402 is fixed by the rectangular groove 401, and the rectangular frame 501 is limited by the support block 2 and the I-shaped connecting plate 3, so that the two moving blocks 402 drive the rectangular frame 501 to deflect, thereby moving the processing table 503 upward.

[0022] Example 2;

[0023] See also Figures 4 and 5 , this embodiment provides a technical solution: The side of the fixing plate 403 is provided with a plurality of slots 408 equidistantly arranged in a circular pattern on opposite sides of the two fixing plates 403 . One end of the center-shaped rod 406 is slidably engaged with the interior of the slot 408 . The two center-shaped rods 406 are each provided with a long slot 409 on opposite sides thereof. A round rod 4010 is slidably provided inside the long slot 409, and a second compression spring 4011 is fixedly provided at one end of the round rod 4010. One end of the second compression spring 4011 is fixedly engaged with the interior of the long slot 409. A hemispherical block 4012 is fixedly provided on the left side of the right round rod 4010, and a hemispherical groove 4013 is provided on the right side of the left round rod 4010. The side surface of the hemispherical groove 4013 contacts the side surface of the hemispherical block 4012. In this embodiment, by moving one of the two round rods 4010 toward the inside of the long groove 409, the hemispherical block 4012 is separated from the hemispherical groove 4013, and the fixation between the two round rods 4010 is released. Then, the middle-shaped rod 406 is stretched outward and moved out from the inside of the slot 408 to release the fixation of the threaded rod 404. The threaded rod 404 is rotated, thereby driving one of the rectangular frames 501 to deflect, so that the processing table 503 is tilted, which can facilitate the coating of the side of the magnetic steel and at the same time remove part of the alloy slurry on the processing table 503.

[0024] Example 3;

[0025] See also Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 、 Figure 9 , this embodiment provides a technical solution: The spraying mechanism 8 includes a connecting bar 801, which is slidably arranged inside the movable groove 7. The shape of the inside of the movable groove 7 and the shape of the connecting bar 801 are both cross-shaped. A spray gun 802 is fixedly arranged at the bottom of the connecting bar 801. A square groove 803 is provided on the left side of the connecting bar 801. An L-shaped block 804 is slidably provided inside the square groove 803. An I-shaped groove 805 is provided inside the horizontal block of the L-shaped block 804. C-shaped bars 806 are slidably provided on the front and rear sides of the inner wall of the I-shaped groove 805. A third compression spring 807 is fixedly provided on the opposite side of the two C-shaped bars 806. Fixed grooves 808 are provided on the upper and lower sides of the front and rear sides of the inner wall of the square groove 803. Four fixed grooves 808 are grouped into two, and two of the fixed grooves 808 are respectively slidably matched with the side faces of the two vertical bars on the right side of the two C-shaped bars 806; A cleaning strip 809 is fixedly provided at the bottom of the vertical block of the L-shaped block 804. The bottom of the cleaning strip 809 is slidably engaged with the top of the processing table 503. The left and right sides of the middle of the bottom surface of the cleaning strip 809 are both provided with a 30° bevel angle. A clamping frame 504 is provided on the top of the processing table 503. Z-shaped rods 505 are rotatably provided in the middle of the left and right sides of the clamping frame 504. The two front side cross bars of the two Z-shaped rods 505 respectively penetrate the outside of the processing table 503. The front sides of the front side cross bars of the two Z-shaped rods 505 are fixed with C-shaped plates 5013. Long strips 5012 are slidably provided on both sides of the front and back of the inner wall of the clamping frame 504. Long strips 5012 are provided on both sides of the front and back of the inner wall of the clamping frame 504. The strip 5012 cooperates with the slide groove 506, and a force spring 507 is fixedly provided on the side of the slide groove 506 opposite to the long strip 5012. The front and rear sides of the side of the long strip 5012 are movably connected with C-shaped clamping strips 508. The side of the vertical bar of the C-shaped clamping strip 508 is fixed with a tension spring 509. The left and right sides of the clamping frame 504 are provided with C-shaped limit strips 5010. The inner sliding of the C-shaped limit strip 5010 is provided with a limit block 5011 that cooperates with it. In this embodiment, the two C-shaped bars 806 are closed toward the middle, so that the two vertical bars on the right side of the C-shaped bar 806 are moved out from the inside of the fixing groove 808, thereby releasing the fixation of the L-shaped block 804. Then, the L-shaped block 804 is moved downward along the square groove 803 to the limit position. At this time, the L-shaped block 804 drives the cleaning bar 809 at the bottom thereof to move to the top of the processing table 503, and the reciprocating screw rod 10 is driven by the motor 9 to rotate, so that the cleaning bar 809 slides on the top of the processing table 503, scraping off the metal slurry adhered to the upper side of the processing table 503. At the same time, when the processing table 503 moves downward to the limit position, the C-shaped plate 503 is moved downward to the limit position. The horizontal plate of 013 is stepped down, so that the C-shaped plate 5013 drives the two Z-shaped rods 505 on its side and the clamping frame 504 to deflect upward. At the same time, the two limit blocks 5011 and the C-shaped limit bar 5010 are used to limit the clamping frame 504 to maintain stable deflection. When the clamping frame 504 is deflected to be perpendicular to the processing table 503, the limit block 5011 continues to move toward the front side of the C-shaped limit bar 5010, so that the magnet on the upper side of the clamping frame 504 is flipped, and then the other side of the magnet is quickly coated. At the same time, the horizontal bar of the C-shaped clamping bar 508 can be used to achieve point-to-point fixation of the magnet, and then the side of the magnet is coated.

[0026] The use method and advantages of the present invention: When the grain boundary infiltration device for sintered NdFeB is in operation and use, the working process is as follows: like Figures 1 to 11As shown, first, the magnetic steel to be subjected to grain boundary penetration coating is placed on the upper side of the processing table 503, and then the two middle-shaped rods 406 are closed to the middle respectively, the two first compression springs 407 are compressed, and the two cross bars at the opposite ends of the two middle-shaped rods 406 are moved out from the inside of the slots 408 respectively, releasing the fixed state between the two threaded rods 404, and then the two threaded rods 404 are rotated to limit the fixed plate 403 through the rectangular groove 401, so that the fixed plate 403 slides horizontally inside the rectangular groove 401, and at the same time, the fixed plate 403 slides horizontally inside the rectangular groove 401. The support block 2 and the I-shaped connecting plate 3 limit the rectangular frame 501, so that the fixed plate 403 drives the lower horizontal bar of the rectangular frame 501 to deflect when moving, and then drives the processing table 503 to move upward to a suitable processing height according to the different thicknesses of magnetic steel through the connecting block 502. Then, the middle-shaped rod 406 is relaxed, so that the middle-shaped rod 406 moves to the inside of the appropriate slot 408 due to the rebound force of the first compression spring 407. There is no need to replace the bearing device for magnetic steel processing, which increases the efficiency of coating magnetic steel of different thicknesses. By moving the two C-shaped bars 806 toward the middle at the same time, the third compression spring 807 is compressed, and the two right vertical bars of the C-shaped bar 806 are moved out from the inside of the two upper fixed grooves 808, thereby releasing the fixed state of the L-shaped block 804. Then, the L-shaped block 804 drives the C-shaped bar 806 inside it to move downward to the bottom of the inner wall of the square groove 803. At this time, the two right vertical bars of the C-shaped bar 806 are aligned with the two lower fixed grooves 808, and the C-shaped bar 806 is relaxed, so that the C-shaped bar 806 is reset to the front and rear sides by the rebound force of the third compression spring 807. At this time, the two right vertical bars of the C-shaped bar 806 move to the inside of the two lower fixed grooves 808. At this time, the cleaning bar 809 moves to contact the top of the processing table 503, and then the reciprocating screw rod 10 is driven to rotate by the motor 9, so that part of the metal slurry splashed on the top of the processing table 503 can be quickly scraped out. At the same time, by fine-tuning the two When the clamping frame 504 is deflected to a position perpendicular to the processing table 503, the limit block 5011 continues to move toward the front side of the C-shaped limit bar 5010, causing the magnetic steel on the upper side of the clamping frame 504 to flip over, thereby quickly coating the other side of the magnetic steel. At the same time, the horizontal bar of the C-shaped clamping bar 508 can be used to fix the magnetic steel point-to-point, thereby coating the side of the magnetic steel. By moving one of the two round rods 4010 toward the inside of the long groove 409, the second compression spring 4011 is compressed, and then the corresponding middle-shaped rod 406 is stretched and the first compression spring 407 is compressed, so that one end of the cross bar of the middle-shaped rod 406 moves out from the inside of the slot 408, thereby releasing the fixation of one of the threaded rods 404, and then the released threaded rod 404 is rotated, and the lower cross bar of the rectangular frame 501 is driven to move inside the limit frame 4 through the fixing plate 403. At the same time, the rectangular frame 501 is limited by the support block 2 and the I-shaped connecting plate 3, so that the rectangular frame 501 is deflected, thereby driving the processing table 503 on the upper side to tilt, and then quickly cleaning the impurities and other metal slurry generated during the processing on the upper side of the processing table 503.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain boundary infiltration device for sintering NdFeB, comprising a C-shaped workbench (1), wherein support blocks (2) are fixedly provided on both the front and rear sides of the left and right sides of the top of the lower horizontal plate of the C-shaped workbench (1), characterized in that: The four support blocks (2) are grouped into two and are rotatably provided with an I-shaped connecting plate (3) on one side opposite to each other. Two limit frames (4) are fixedly provided in the middle of the top surface of the lower horizontal plate of the C-shaped workbench (1). A displacement mechanism (5) for moving the magnetic steel is slidably provided inside the two limit frames (4). A magnetic stirring frame (6) is fixedly provided on the top of the upper horizontal plate of the C-shaped workbench (1). A moving groove (7) is provided inside the upper horizontal plate of the C-shaped workbench (1). A spraying mechanism (8) is slidably provided inside the moving groove (7). A motor (9) is fixedly provided on the left side of the upper horizontal plate of the C-shaped workbench (1). The right end of the motor (9) passes through the interior of the moving groove (7) and is fixedly provided with a reciprocating screw rod (10).

2. The grain boundary infiltration device for sintered NdFeB according to claim 1, characterized in that: The displacement mechanism (5) comprises two rectangular frames (501), two horizontal bars on the lower sides of the two rectangular frames (501) are slidably arranged inside the two limit frames (4), the front and rear sides of the upper horizontal plate of the I-shaped connecting plate (3) are respectively rotatably connected to the opposite sides of the two vertical bars of the rectangular frame (501), and the front and rear ends of the two upper horizontal bars of the rectangular frame (501) are rotatably provided with connecting blocks (502), and the tops of the four connecting blocks (502) are fixedly provided with processing tables (503).

3. The grain boundary infiltration device for sintered NdFeB according to claim 1, characterized in that: A rectangular groove (401) is provided on the top of the limit frame (4), and a moving block (402) is slidably provided inside the rectangular groove (401). The lower side of the moving block (402) is fixedly matched with the top of the lower horizontal rod of the rectangular frame (501). A fixed plate (403) is fixedly provided on the opposite side of the top of the two limit frames (4). A threaded rod (404) is rotatably provided inside the fixed plate (403). The opposite ends of the two threaded rods (404) respectively penetrate the side surfaces of the two moving blocks (402). The opposite sides of the two threaded rods (404) are fixedly connected to a circular plate (405). A middle-shaped rod (406) is movably inserted into the side surface of the circular plate (405). A first compression spring (407) is fixedly provided on the side surface of the vertical rod of the middle-shaped rod (406), and one end of the first compression spring (407) is fixedly connected to the side surface of the circular plate (405).

4. The grain boundary infiltration device for sintered NdFeB according to claim 3, characterized in that: A slot (408) is provided on the side of the fixing plate (403), and the number of the slots (408) is several. The slots (408) are provided in a circular shape at equal distances on opposite sides of the two fixing plates (403). One end of the center-shaped rod (406) is slidably engaged with the inside of the slot (408), and a long slot (409) is provided on opposite sides of the two center-shaped rods (406).

5. The grain boundary infiltration device for sintered NdFeB according to claim 4, characterized in that: A round rod (4010) is slidably provided inside the long slot (409), a second compression spring (4011) is fixedly provided at one end of the round rod (4010), one end of the second compression spring (4011) is fixedly matched with the inside of the long slot (409), a hemispherical block (4012) is fixedly provided on the left side of the round rod (4010) on the right side, and a hemispherical groove (4013) is provided on the right side of the round rod (4010) on the left side, and the side surface of the hemispherical groove (4013) contacts the side surface of the hemispherical block (4012).

6. The grain boundary infiltration device for sintered NdFeB according to claim 1, characterized in that: The spraying mechanism (8) includes a connecting bar (801), which is slidably arranged inside the movable groove (7), and the shape of the inside of the movable groove (7) and the shape of the connecting bar (801) are both cross-shaped. A spray gun (802) is fixedly arranged at the bottom of the connecting bar (801), and a square groove (803) is opened on the left side of the connecting bar (801). An L-shaped block (804) is slidably arranged inside the square groove (803), and the horizontal block of the L-shaped block (804) is fixedly arranged at the bottom of the connecting bar (801). An I-shaped groove (805) is provided inside, and C-shaped bars (806) are slidably provided on both the front and rear sides of the inner wall of the I-shaped groove (805), and a third compression spring (807) is fixedly provided on the opposite side of the two C-shaped bars (806). Fixed grooves (808) are provided on both the upper and lower sides of the front and rear sides of the inner wall of the square groove (803), and the four fixed grooves (808) are grouped into two, wherein two of the fixed grooves (808) are respectively slidably matched with the side surfaces of the two vertical bars on the right side of the two C-shaped bars (806).

7. The grain boundary infiltration device for sintered NdFeB according to claim 6, characterized in that: A cleaning strip (809) is fixedly provided at the bottom of the vertical block of the L-shaped block (804), and the bottom of the cleaning strip (809) is slidably engaged with the top of the processing table (503), and a 30° bevel angle is provided on both the left and right sides of the middle of the bottom surface of the cleaning strip (809).

8. The grain boundary infiltration device for sintered NdFeB according to claim 2, characterized in that: A clamping frame (504) is provided on the top of the processing table (503), and a Z-shaped rod (505) is rotatably provided in the middle of the left and right sides of the clamping frame (504), and the two front side cross bars of the two Z-shaped rods (505) respectively penetrate the outside of the processing table (503), and the front sides of the front side cross bars of the two Z-shaped rods (505) are fixedly provided with a C-shaped plate (5013), and the front and rear sides of the inner wall of the clamping frame (504) are both slidably provided with a long strip (5012), and the front and rear sides of the inner wall of the clamping frame (504) are both provided with a long strip (5012) (5012) is matched with a slide groove (506), a force spring (507) is fixedly provided on the side of the slide groove (506) opposite to the long strip (5012), the front and rear sides of the side of the long strip (5012) are movably connected with C-shaped clamping strips (508), and the side of the vertical strip of the C-shaped clamping strip (508) is fixed with a tension spring (509), and the left and right sides of the clamping frame (504) are both provided with C-shaped limit strips (5010), and the internal sliding of the C-shaped limit strip (5010) is provided with a limit block (5011) matched with it.

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