Sintered neodymium iron boron blank forming die

Abstract

The utility model relates to the technical field of neodymium-iron-boron blanks, in particular to a sintered neodymium-iron-boron blank forming die which comprises a base plate, a vertical plate is fixedly arranged at the left end of the middle of the upper surface of the base plate, a rotating shaft is rotationally arranged at the top of the vertical plate, and the outer circumferential face of the middle of the rotating shaft is fixedly sleeved with a second straight gear. And teeth on one side of the outer circumferential surface of the second straight gear are engaged with an arc-shaped toothed plate, and a fixing rod is fixedly arranged on one side of the top of the arc-shaped toothed plate. Through the arrangement of the arc-shaped toothed plate, the second straight gear, the rectangular tooth groove plate and other components, the arc-shaped toothed plate is driven to do arc-shaped motion around the circle center of the top of the supporting plate under the action of the second straight gear, so that the mold groove turns over along with the motion of the arc-shaped toothed plate, neodymium iron boron residues left in the mold groove are poured out, and the production efficiency is improved. And the influence of residues on subsequent neodymium iron boron sintering forming is avoided, the labor intensity caused by manual cleaning is reduced, and the neodymium iron boron sintering working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of neodymium iron boron blanks, in particular to a sintered neodymium iron boron blank forming die. BACKGROUND

[0002] The neodymium iron boron blank is a tetragonal crystal composed of neodymium (Nd), iron (Fe), boron (B) and other elements, and the main component ratio is generally 29%-32.5% of rare earth metal neodymium, 63.95%-68.65% of metal element iron, and 1.1%-1.2% of non-metal element boron. Dysprosium (Dy), niobium (Nb), aluminum (Al), copper (Cu) and other elements can also be added to obtain different properties.

[0003] Through retrieval, the Chinese patent publication No. CN 203124735 U discloses a neodymium iron boron sintering forming die, which comprises two symmetrically arranged pressing plates, the inner side of the two ends of the pressing plate is provided with a matched slot, a side plate is arranged between the matched slots corresponding to the two pressing plates, the two ends of the side plate are clamped in the matched slots, and a magnetic separation plate is arranged on the inner side of the side plate. The utility model has the advantages of simple structure, and the development and manufacturing of the mold are reduced by adding a thin plate magnetic separation sheet on the side plate of the ordinary mold.

[0004] For the related technology in the above, the inventors find that the following defects exist: the forming die in the above technology is inconvenient to clean the residual neodymium iron boron residues in time when in use, delays the working progress of the neodymium iron boron sintering, and affects the subsequent neodymium iron boron sintering quality. Manual cleaning not only has low efficiency, but also has large labor intensity of workers. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the problems mentioned in the background art, the present application provides a sintered neodymium iron boron blank forming die.

[0006] The sintered neodymium iron boron blank forming die provided by the present application adopts the following technical scheme: a base plate is provided, a vertical plate is fixedly arranged at the left end of the middle part of the upper surface of the base plate, a rotating shaft is rotatably arranged at the top of the vertical plate, a second straight gear is fixedly sleeved on the outer circumference of the middle part of the rotating shaft, an arc-shaped toothed plate is meshingly arranged on one side of the outer circumference of the second straight gear, a fixed rod is fixedly arranged on one side of the top of the arc-shaped toothed plate, a mold groove is fixedly arranged at the end of the fixed rod away from the arc-shaped toothed plate, the middle part of the outer side of the mold groove is rotatably arranged at the middle position of the top of a supporting plate through a rotating rod, a supporting frame is fixedly arranged at the bottom of the supporting plate, and the bottom of the supporting frame is fixedly arranged at the right end of the upper surface of the base plate.

[0007] A first spur gear is fixedly sleeved on the outer circumferential surface of one end of the rotating shaft. A rectangular toothed plate is provided for the meshing of the teeth on the outer side of the first spur gear. A hydraulic rod is fixedly installed at the bottom of the rectangular toothed plate. The bottom of the hydraulic rod is fixedly installed at the bottom of the inner wall of the power box. The bottom of the power box is fixedly installed at the right end of the upper surface of the base plate.

[0008] Optionally, the support frame is set in a "U" shape, with support plates at both ends of the top of the support frame. The two support plates are symmetrically arranged in the middle of the outer circumference of the mold groove, and the distance between the middle of the support frame is greater than the height of the mold groove.

[0009] Optionally, the arc-shaped toothed plate is set as a quarter circle arc, and limiting cylindrical balls are slidably set on both sides of the top of the arc-shaped toothed plate. A crossbar is fixedly set on the side of the limiting cylindrical ball away from the arc-shaped toothed plate. One end of the crossbar is fixedly set on the top of the inner wall of the power box. The bottom of the arc-shaped toothed plate is fixedly connected to the bottom of the mold groove through a connecting rod. The arc-shaped toothed plate and the rotating rod at the top of the support plate are set in concentric circles.

[0010] Optionally, a power port is fixedly provided on the top of the power box, the width of which is greater than the width of the rectangular toothed plate, and a rectangular groove is provided on the right side of the power box, the rectangular groove being located away from the edge of the mold groove.

[0011] Optionally, a slider is fixedly installed on the side of the rectangular toothed plate, the middle part of the slider is slidably sleeved on the outer circumference of the vertical rod, and the bottom of the vertical rod is fixedly installed on the bottom of the inner wall of the power box.

[0012] Optionally, a blocking plate is fixedly installed at the bottom of the mold groove, and an air inlet is provided at the bottom of the blocking plate. The bottom of the air inlet is connected to one end of an air pipe, and the other end of the air pipe is connected to an air pump. The top of the air pump is fixedly installed at the bottom of the mold groove, and the blocking plate penetrates through the bottom of the mold groove.

[0013] Optionally, there are two support plates, the tops of which are rotatably connected to the rotating shaft, and the sides of the support plates are away from the rotation trajectory of the mold groove.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model, by setting up components such as an arc-shaped toothed plate, a second spur gear, and a rectangular toothed plate, enables the arc-shaped toothed plate to move in an arc shape around the center of the top of the support plate under the action of the second spur gear. This achieves the effect of the mold groove flipping with the movement of the arc-shaped toothed plate, pouring out the residual NdFeB residue inside, avoiding the residue from affecting the subsequent NdFeB sintering and forming, reducing the labor intensity caused by manual cleaning, and improving the efficiency of NdFeB sintering.

[0016] 2. This utility model achieves the effect of blowing out residual impurities inside the mold cavity by setting an air pump and air pipe connecting to the bottom of the mold cavity, thereby avoiding manual cleaning, reducing contact between workers and the mold cavity, protecting workers from mold damage, preventing external impurities from falling into the cavity, and facilitating the normal operation of subsequent NdFeB sintering. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the power box in the embodiments of this application;

[0019] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the mold groove in the embodiment of this application;

[0020] Figure 4 This is a three-dimensional structural diagram of the side of the arc-shaped toothed plate in an embodiment of this application.

[0021] Reference numerals: 1. Base plate; 2. Power box; 3. First spur gear; 4. Second spur gear; 5. Arc-shaped toothed plate; 6. Fixing rod; 7. Support plate; 8. Mold groove; 9. Blocking plate; 10. Support frame; 11. Hydraulic rod; 12. Vertical rod; 13. Rectangular toothed plate; 14. Slider; 15. Horizontal rod; 16. Air pump; 17. Rotating shaft; 18. Vertical plate; 19. Air pipe; 20. Limiting cylindrical ball. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0023] This application discloses a molding die for sintered NdFeB blanks. For example... Figure 1 As shown, the device includes a base plate 1. A vertical plate 18 is fixedly installed at the left end of the middle of the upper surface of the base plate 1. A rotating shaft 17 is rotatably installed on the top of the vertical plate 18. A second spur gear 4 is fixedly sleeved on the outer circumferential surface of the middle of the rotating shaft 17. An arc-shaped toothed plate 5 is meshed on one side of the outer circumferential surface of the second spur gear 4. The arc-shaped toothed plate 5 is set as a quarter circle arc. Limiting cylindrical balls 20 are slidably installed on both sides of the top of the arc-shaped toothed plate 5. A crossbar 15 is fixedly installed on the side of the limiting cylindrical ball 20 away from the arc-shaped toothed plate 5. One end of the crossbar 15 is fixedly installed on the top of the inner wall of the power box 2. The bottom of the arc-shaped toothed plate 5 is fixedly connected to the bottom of the mold groove 8 through a connecting rod. The two limiting cylindrical balls 20 on both sides of the arc-shaped toothed plate 5 limit the two sides of the arc-shaped toothed plate 5 to prevent the arc-shaped toothed plate 5 from tilting when it drives the mold groove 8 to make arc-shaped movements.

[0024] A fixing rod 6 is fixedly installed on one side of the top of the arc-shaped toothed plate 5. A mold groove 8 is fixedly installed at the end of the fixing rod 6 away from the arc-shaped toothed plate 5. A blocking plate 9 is fixedly installed at the bottom of the mold groove 8. An air inlet is provided at the bottom of the blocking plate 9. The bottom of the air inlet is connected to one end of the air pipe 19. The other end of the air pipe 19 is connected to the air pressure pump 16. The top of the air pressure pump 16 is fixedly installed at the bottom of the mold groove 8. The blocking plate 9 penetrates the bottom of the mold groove 8. The arc-shaped toothed plate 5 and the rotating rod at the top of the support plate 7 are arranged concentrically to facilitate the mold groove 8 to make circular motion around the top of the support plate 7 under the action of the arc-shaped toothed plate 5. The blocking plate 9 seals the top of the air pipe 19 and keeps it in a closed state when not in use. At the same time, it prevents the neodymium iron boron from falling into the pipe during sintering. After the blocking plate 9 is opened, the high-pressure gas inside the air pressure pump 16 is blown out through the air pipe 19.

[0025] The outer center of the mold groove 8 is rotatably mounted on the top center of the support plate 7 via a rotating rod. There are two support plates 7, and the tops of both support plates 7 are rotatably connected to the rotating shaft 17. The sides of the support plates 7 are away from the rotation trajectory of the mold groove 8. The two support plates 7 are set to support the rotating shaft 17 and ensure that the rotating shaft 17 can rotate smoothly. A support frame 10 is fixedly mounted on the bottom of the support plate 7. The support frame 10 is set in a "U" shape. Support plates 7 are set at both ends of the top of the support frame 10. The two support plates 7 are symmetrically arranged on the middle of the outer circumference of the mold groove 8. The distance between the middle of the support frame 10 is greater than the height of the mold groove 8. The "U" shaped support frame 10 facilitates the support of the middle mold groove 8 and avoids movement conflict between the mold groove 8 and the inner wall of the support frame 10. The bottom of the support frame 10 is fixedly mounted on the right end of the upper surface of the base plate 1.

[0026] A first spur gear 3 is fixedly sleeved on the outer circumferential surface of one end of the rotating shaft 17. A rectangular toothed plate 13 is provided on the outer side of the first spur gear 3. A slider 14 is fixedly installed on the side of the rectangular toothed plate 13. The middle part of the slider 14 is slidably sleeved on the outer circumferential surface of the vertical rod 12. The bottom of the vertical rod 12 is fixedly installed on the bottom of the inner wall of the power box 2. The slider 14 slides on the surface of the rectangular vertical rod 12 to ensure that the rectangular toothed plate 13 can slide smoothly up and down and avoid tilting. A hydraulic rod 11 is fixedly installed at the bottom of the rectangular toothed plate 13. The bottom of rod 11 is fixedly installed on the bottom of the inner wall of power box 2. The top of power box 2 is fixedly provided with a power port. The width of the power port is greater than the width of rectangular toothed plate 13. The power port prevents the rectangular toothed plate 13 from conflicting with the top of power box 2 when it moves upward, so that the rectangular toothed plate 13 can move quickly. A rectangular groove is provided on the right side of power box 2. The rectangular groove is far away from the edge of mold groove 8. The rectangular groove prevents mold groove 8 from getting stuck when it moves. The bottom of power box 2 is fixedly installed on the right end of the upper surface of base plate 1.

[0027] The implementation principle of a sintered NdFeB blank forming mold in this application embodiment is as follows: When the NdFeB blank inside the mold groove 8 is sintered and formed, and the mold needs to be removed, the hydraulic rod 11 is activated to drive the rectangular toothed plate 13 to move. The rectangular toothed plate 13 drives the rotating shaft 17 to rotate through the first spur gear 3. The rotating shaft 17 causes the arc-shaped toothed plate 5 on one side to move in a circle around the center of the rotating shaft 17 through the second spur gear 4 in the middle. Since one side of the arc-shaped toothed plate 5 is fixedly connected to the mold groove 8, the mold groove 8 moves in a circle at the same time. The middle part of the outer side of the mold groove 8 is rotated and set at the top position of the support plate 7, so that the opening of the mold groove 8 is flipped to one side, so that the NdFeB blank formed inside is facing one side. If the NdFeB blank cannot fall out, the blocking plate 9 is pulled out, and the air pump 16 is activated to discharge gas through the air pipe 19 to assist in removing the NdFeB blank from the mold. At the same time, the high-pressure gas blows out the residue inside the mold smoothly, avoiding secondary cleaning.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sintered NdFeB blank forming mold, comprising a base plate (1), characterized in that: A vertical plate (18) is fixedly installed at the left end of the middle part of the upper surface of the base plate (1). A rotating shaft (17) is rotatably installed at the top of the vertical plate (18). A second spur gear (4) is fixedly sleeved on the outer circumferential surface of the middle part of the rotating shaft (17). An arc-shaped tooth plate (5) is meshed on one side of the outer circumferential surface of the second spur gear (4). A fixing rod (6) is fixedly installed on one side of the top of the arc-shaped tooth plate (5). A mold groove (8) is fixedly installed at the end of the fixing rod (6) away from the arc-shaped tooth plate (5). The middle part of the outer side of the mold groove (8) is rotatably installed at the middle position of the top of the support plate (7) through the rotating rod. A support frame (10) is fixedly installed at the bottom of the support plate (7). The bottom of the support frame (10) is fixedly installed at the right end of the upper surface of the base plate (1). A first spur gear (3) is fixedly sleeved on the outer circumferential surface of one end of the rotating shaft (17). A rectangular toothed plate (13) is provided on the outer side of the first spur gear (3). A hydraulic rod (11) is fixedly provided at the bottom of the rectangular toothed plate (13). The bottom of the hydraulic rod (11) is fixedly provided at the bottom of the inner wall of the power box (2). The bottom of the power box (2) is fixedly provided at the right end of the upper surface of the base plate (1).

2. The sintered NdFeB blank forming mold according to claim 1, characterized in that: The support frame (10) is set in a "U" shape. Support plates (7) are provided at both ends of the top of the support frame (10). The two support plates (7) are symmetrically arranged in the middle of the outer circumference of the mold groove (8). The distance between the middle of the support frame (10) is greater than the height of the mold groove (8).

3. The sintered NdFeB blank forming mold according to claim 1, characterized in that: The arc-shaped toothed plate (5) is set as a quarter circle arc. Limiting cylindrical balls (20) are slidably set on both sides of the top of the arc-shaped toothed plate (5). A crossbar (15) is fixedly set on the side of the limiting cylindrical ball (20) away from the arc-shaped toothed plate (5). One end of the crossbar (15) is fixedly set on the top of the inner wall of the power box (2). The bottom of the arc-shaped toothed plate (5) is fixedly connected to the bottom of the mold groove (8) through a connecting rod. The rotating rods at the top of the arc-shaped toothed plate (5) and the support plate (7) are set in concentric circles.

4. The sintered NdFeB blank forming mold according to claim 1, characterized in that: The top of the power box (2) is fixedly provided with a power port, the width of which is greater than the width of the rectangular toothed plate (13). A rectangular groove is provided on the right side of the power box (2), and the rectangular groove is far away from the edge of the mold groove (8).

5. The sintered NdFeB blank forming mold according to claim 1, characterized in that: A slider (14) is fixedly installed on the side of the rectangular toothed plate (13). The middle part of the slider (14) is slidably sleeved on the outer circumferential surface of the vertical rod (12). The bottom of the vertical rod (12) is fixedly installed on the bottom of the inner wall of the power box (2).

6. The sintered NdFeB blank forming mold according to claim 1, characterized in that: A blocking plate (9) is fixedly installed at the bottom of the mold groove (8). An air inlet is provided at the bottom of the blocking plate (9). The bottom of the air inlet is connected to one end of the air pipe (19). The other end of the air pipe (19) is connected to the air pressure pump (16). The top of the air pressure pump (16) is fixedly installed at the bottom of the mold groove (8). The blocking plate (9) penetrates the bottom of the mold groove (8).

7. The sintered NdFeB blank forming mold according to claim 1, characterized in that: There are two support plates (7), and the tops of the two support plates (7) are rotatably connected to the rotating shaft (17). The sides of the support plates (7) are far away from the rotation trajectory of the mold groove (8).

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