Special-shaped neodymium-iron-boron magnet machining die

Abstract

The utility model discloses a special-shaped neodymium-iron-boron magnet machining die which comprises a base, a barrel body installed on the base and used for smashing raw materials, a transmission shaft providing power for the barrel body and a die plate shaping the raw materials. The barrel body comprises an oscillating cone for oscillating and crushing raw materials, a blanking hopper for facilitating blanking, an extrusion ring for controlling the crushing degree of the raw materials and a rotating shaft for controlling the discharging speed, the transmission shaft is mounted on the base and penetrates through the side wall of the barrel body, and the template is arranged on the lower surface of the base and right faces the lower part of the barrel body; the rotating shaft is mounted at the center in the barrel body and connected with the transmission shaft; the swinging cone is arranged at the top of the rotating shaft. Solid particles are compacted after being crushed, the yield of products is increased, the service life of a template is prolonged, the oscillating cone for crushing the solid can be quickly mounted and dismounted and is convenient and quick to maintain, the crushing quality is ensured, and the compaction degree is further improved through annular rotation feeding of the feeding rod.

Description

Technical Field

[0001] The utility model relates to the technical field of NdFeB production and processing, in particular to a special-shaped NdFeB magnet processing die. Background Art

[0002] The production steps of NdFeB magnets are roughly divided into three parts: raw material mixing, mold shaping and current magnetization. Most NdFeB magnets are block or columnar. Due to their regular shape, they are very easy to mold. However, when producing NdFeB magnets with special shapes, it is very difficult for solid raw materials to fit into the shape of the mold, resulting in the shape of the produced product not meeting the requirements. Therefore, a mold is needed to improve the yield of special-shaped NdFeB magnets.

[0003] Chinese patent CN219017438U discloses a special-shaped mold for NdFeB permanent magnets, including a base, a motor installed in the base, a rotating shaft installed in rotation in the base, the motor and the rotating shaft are connected in a transmission manner, the top of the rotating shaft extends outside the base and is fixedly installed with a rotating disk, a limiting cylinder is placed on the rotating disk, two merged molds are placed in the limiting cylinder, a first frame is fixedly installed on the rotating disk, a plug is slidably installed in the first frame, the bottom end of the plug extends into the two molds, a filling tube is fixedly installed on one side of the plug, a second frame is fixedly installed on the top of the base, and a hydraulic cylinder is fixedly installed on the top of the second frame. The special-shaped mold for NdFeB permanent magnets provided by this scheme has the advantage of improving the filling and compacting effect of NdFeB permanent magnet raw materials.

[0004] There are still several points for improvement in the above scheme: squeezing solid materials in the mold is likely to cause damage to the mold; directly pouring solid raw materials is likely to form pores, increasing the power consumption of the compaction step. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a special-shaped NdFeB magnet processing mold, including a base and a barrel body installed on the base for crushing raw materials, a transmission shaft providing power for the barrel body and a template for shaping the raw materials, the barrel body including a swing cone for oscillating and crushing the raw materials, a drop hopper for convenient material discharge, an extrusion ring for controlling the degree of crushing of the raw materials and a rotating shaft for controlling the discharge speed, the barrel body is installed on the upper surface of the base, the transmission shaft is installed on the base and passes through the side wall of the barrel body, the template is arranged on the lower surface of the base and directly below the barrel body, the rotating shaft is installed at the inner center of the barrel body and connected to the transmission shaft, the swing cone is arranged on the top of the rotating shaft, the drop hopper is installed on the top of the barrel body, and the extrusion ring is installed on the lower surface of the drop hopper and surrounds the swing cone.

[0006] Preferably, the swing cone includes a shock-absorbing ring, a cam, a column and a limit groove. The cam is arranged at the bottom of the swing cone and connected to the rotating shaft. The shock-absorbing ring is installed above the rotating shaft and surrounds the cam. The column is installed on the cam. The limit groove is opened on the side of the lower surface of the swing cone.

[0007] Preferably, the shock absorbing ring includes a telescopic rod, a spring and a positioning ring, the positioning ring is installed above the rotating shaft and below the shock absorbing ring, the telescopic rod array is arranged on the top and side of the positioning ring, the telescopic rod is connected to the shock absorbing ring, and the spring is surrounded by the outside of the telescopic rod.

[0008] Preferably, the column includes a cavity, a spherical joint, an interlocking disk and a square joint, the cavity is arranged at the top of the swing cone, the spherical joint is installed at the top of the column and is in the cavity, the interlocking disk is installed in the cavity and connected to the top of the spherical joint, and the square joint is installed at the bottom of the column.

[0009] Preferably, the drop hopper includes a rotating frame, a handle, a threaded interface and a ring frame, the rotating frame is installed on the top of the drop hopper, the handle is arranged on the rotating frame, the threaded interface is arranged on the outer wall of the drop hopper, and the ring frame is installed on the top of the barrel body and is engaged with the threaded interface.

[0010] Preferably, the rotating shaft includes a cone disk, a bevel gear, a shield and a feed rod, the cone disk is arranged on the top of the rotating shaft, the bevel gear is installed at one end of the transmission shaft and meshes with the cone disk, the shield surrounds the outside of the rotating shaft, and the feed rod is installed at the bottom of the rotating shaft.

[0011] Preferably, the transmission shaft includes a motor and a lever arm, the motor is mounted on the upper surface of the base and connected to the transmission shaft, and the lever arm surrounds the outer side of the transmission shaft.

[0012] Preferably, the template includes a sealing ring, a discharge port and a mold groove, the sealing ring is installed on the upper surface of the template, the discharge port is arranged at the bottom of the barrel body, and the mold groove is arranged at the center of the template.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model improves the product yield and the service life of the template by crushing and compacting the solid particles. Specifically, the collision of the swing cone and the extrusion ring is used to complete the oscillation and crushing of the mixed NdFeB raw material solid in the barrel, so that the solid is crushed into fine granular particles, and the material is fed into different types of special-shaped templates through the rotation of the rotating shaft to complete the extrusion shaping.

[0015] 2. The swing cone for crushing solids of the utility model can be quickly installed and disassembled, which is convenient for quick maintenance and ensures the crushing quality. Specifically, the column is used to quickly install and disassemble the swing cone on the top of the rotating shaft, and at the same time provide a shaking center for the swing cone, and the square joint enables it to rotate synchronously with the rotating shaft.

[0016] 3. The utility model further improves the degree of compaction by feeding the material through the circular rotation of the feeding rod. Specifically, the feeding rod feeds the crushed fine solid particles out of the barrel in a circular shape as the rotating shaft rotates, thereby reducing the impact of the solid shell on the template. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of a special-shaped NdFeB magnet processing mold.

[0018] Figure 2 It is a three-dimensional diagram of the barrel in a special-shaped NdFeB magnet processing mold.

[0019] Figure 3 It is a cross-sectional view of a barrel in a special-shaped NdFeB magnet processing mold.

[0020] Figure 4 It is a three-dimensional diagram of a swing cone in a special-shaped NdFeB magnet processing mold.

[0021] Figure 5 It is a cross-sectional view of a swing cone in a special-shaped NdFeB magnet processing mold.

[0022] Figure 6 It is a three-dimensional diagram of the center column of a special-shaped NdFeB magnet processing mold.

[0023] Figure 7 This is an enlarged view of the shock-absorbing ring in the processing mold of a special-shaped NdFeB magnet.

[0024] Figure 8 It is a three-dimensional picture of the drop hopper in a special-shaped NdFeB magnet processing mold.

[0025] Fig. 9 It is a stereoscopic diagram of a template in a mold for processing special-shaped NdFeB magnets.

[0026] The numbers in the figure are: 1. base; 2. barrel; 3. swing cone; 31. shock-absorbing ring; 311. telescopic rod; 312. spring; 313. positioning ring; 32. cam; 33. column; 331. spherical joint; 332. cavity; 333. engaging disk; 334. square joint; 34. limiting groove; 4. drop hopper; 41. rotating frame; 42. handle; 43. threaded interface; 44. ring frame; 5. extrusion ring; 6. rotating shaft; 61. cone disk; 62. bevel gear; 63. shield; 64. feeding rod; 7. transmission shaft; 71. motor; 72. force arm; 8. template; 81. sealing ring; 82. discharge port; 83. mold groove. DETAILED DESCRIPTION

[0027] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] See also Figure 1-Figure 9As shown, a special-shaped NdFeB magnet processing mold includes a base 1 and a barrel body 2 installed on the base 1 for crushing raw materials, a transmission shaft 7 for providing power to the barrel body 2 and a template 8 for shaping the raw materials. The barrel body 2 includes a swing cone 3 for oscillating and crushing the raw materials, a drop hopper 4 for convenient material discharge, an extrusion ring 5 for controlling the degree of crushing of the raw materials and a rotating shaft 6 for controlling the discharge speed. The barrel body 2 is installed on the upper surface of the base 1, the transmission shaft 7 is installed on the base 1 and passes through the side wall of the barrel body 2, the template 8 is arranged on the lower surface of the base 1 and is directly below the barrel body 2, the rotating shaft 6 is installed at the inner center of the barrel body 2 and is connected to the transmission shaft 7, the swing cone 3 is arranged on the top of the rotating shaft 6, the drop hopper 4 is installed on the top of the barrel body 2, and the extrusion ring 5 is installed on the lower surface of the drop hopper 4 and surrounds the swing cone 3.

[0029] In this scheme, the transmission shaft 7 is used to supply force, and the collision between the swing cone 3 and the extrusion ring 5 is utilized to complete the oscillation and crushing of the mixed NdFeB raw material solids in the barrel body 2. Finally, the raw materials crushed into particles are fed into different types of heterogeneous templates 8 through the feeding of the rotating shaft 6 to complete shaping. The transmission shaft 7 drives the rotating shaft 6 to rotate, and causes the swing cone 3 on the top of the rotating shaft 6 to oscillate around its cone top. The hopper 4 is used to control the size of the gap between the extrusion ring 5 and the swing cone 3. When the raw materials pass through the gap, they are impacted by the extrusion ring 5 and the swing cone 3 and crushed into fine particles. The size of the gap determines the size of the solid particles. At the same time, the rotation of the rotating shaft 6 causes the fine particles in the barrel to be orderly fed into the template 8, thereby effectively filling the space in the template 8.

[0030] See also Figure 3 to Figure 7 As shown, the swing cone 3 includes a shock-absorbing ring 31, a cam 32, a column 33 and a limit groove 34. The cam 32 is arranged at the bottom of the swing cone 3 and is connected to the rotating shaft 6. The shock-absorbing ring 31 is installed above the rotating shaft 6 and surrounds the cam 32. The column 33 is installed on the cam 32. The limit groove 34 is opened on the side of the lower surface of the swing cone 3.

[0031] The shock-absorbing ring 31 is used to prevent damage to parts of the swing cone 3 caused by a large amount of raw material solids impacting the swing cone 3. The cam 32 rotates with the rotating shaft 6 and hits the inner side of the swing cone 3 to enable it to swing. The column 33 is used to quickly install and disassemble the swing cone 3 on the top of the rotating shaft 6, and at the same time provide a swing center for the swing cone 3. The limit groove 34 cooperates with the shock-absorbing ring 31 to limit the swing amplitude of the swing cone 3.

[0032] See also Figure 7 As shown, the shock absorbing ring 31 includes a telescopic rod 311, a spring 312 and a positioning ring 313. The positioning ring 313 is installed above the rotating shaft 6 and below the shock absorbing ring 31. The telescopic rod 311 array is arranged on the top and side of the positioning ring 313. At the same time, the telescopic rod 311 is connected to the shock absorbing ring 31, and the spring 312 is surrounded by the outside of the telescopic rod 311.

[0033] Telescopic rods 311 and springs 312 are provided on the top and sides of the positioning ring 313. When solid material hits the swing cone 3, the limiting groove 34 squeezes the shock-absorbing ring 31 along the impact direction. The spring 312 then acts as a buffer to offset the impact force, thereby extending the service life of the swing cone 3. The telescopic rod 311 is used to prevent the spring 312 from falling off.

[0034] See also Figure 5 and Figure 6 As shown, the column 33 includes a cavity 332, a spherical joint 331, an engaging disk 333 and a square joint 334. The cavity 332 is arranged at the top of the swing cone 3, the spherical joint 331 is installed at the top of the column 33 and is in the cavity 332, the engaging disk 333 is installed in the cavity 332 and connected to the top of the spherical joint 331, and the square joint 334 is installed at the bottom of the column 33.

[0035] The cavity 332 is used to set the spherical joint 331. By engaging the engaging disk 333 fixed to the swing cone 3 on the spherical joint 331, the entire swing cone 3 can swing around the spherical joint 331 in the cavity 332. The square joint 334 is used to quickly install and disassemble the swing cone 3 and enable it to rotate synchronously with the rotating shaft 6.

[0036] See also Figures 1 to 8 As shown, the drop hopper 4 includes a rotating frame 41, a handle 42, a threaded interface 43 and a ring frame 44. The rotating frame 41 is installed on the top of the drop hopper 4, the handle 42 is arranged on the rotating frame 41, the threaded interface 43 is arranged on the outer wall of the drop hopper 4, and the ring frame 44 is installed on the top of the barrel body 2 and is engaged with the threaded interface 43.

[0037] The rotating frame 41 and the handle 42 are used to control the rotation of the hopper 4. Through the threaded engagement of the threaded interface 43 and the ring frame 44, the hopper 4 can be lifted up and down on the top of the barrel body 2. The extrusion ring 5 fixedly connected to the bottom of the hopper 4 changes the size of the gap between it and the swing cone 3 as it rises and falls, thereby achieving the purpose of controlling the degree of crushing.

[0038] See also Figure 3 to Figure 6 As shown, the rotating shaft 6 includes a conical disk 61, a bevel gear 62, a shield 63 and a feeding rod 64. The conical disk 61 is arranged at the top of the rotating shaft 6, the bevel gear 62 is installed at one end of the transmission shaft 7 and meshes with the conical disk 61, the shield 63 surrounds the outside of the rotating shaft 6, and the feeding rod 64 is installed at the bottom of the rotating shaft 6.

[0039] The cone disk 61 changes the power transmission direction of the transmission shaft 7 by meshing with the bevel gear 62. The shield 63 is used to prevent the solid particles falling from the inside of the barrel body 2 from affecting the rotation of the rotating shaft 6 and to increase the service life of the rotating shaft 6. The feed rod 64 delivers the crushed fine solid particles out of the barrel body 2 in a ring shape as the rotating shaft 6 rotates, avoiding direct impact on the template 8 to form gaps and affect the shaping quality.

[0040] See also Figure 1-Figure 6 As shown, the transmission shaft 7 includes a motor 71 and a lever arm 72 . The motor 71 is mounted on the upper surface of the base 1 and connected to the transmission shaft 7 . The lever arm 72 surrounds the outer side of the transmission shaft 7 .

[0041] The motor 71 provides power for the rotation of the transmission shaft 7. At the same time, since the transmission shaft 7 is vertically inserted into the side wall of the barrel body 2, in order to prevent the transmission shaft 7 from being hit by the falling solid raw materials, a safety space is formed by the force arm 72 surrounding the outside of the transmission shaft 7.

[0042] See also Figure 1-Figure 9 As shown, the template 8 includes a sealing ring 81 , a discharge port 82 and a mold groove 83 , the sealing ring 81 is installed on the upper surface of the template 8 , the discharge port 82 is arranged at the bottom of the barrel body 2 , and the mold groove 83 is arranged at the center of the template 8 .

[0043] The discharge port 82 is used to discharge the fine solid particles sent out in a ring shape by the feeding rod 64 on the rotating shaft 6 and pour them into the mold groove 83 for compaction. The sealing ring 81 is used to prevent the leakage of raw materials. The template 8 can select mold grooves 83 of different shapes as needed to produce different types of unmagnetized magnets.

[0044] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. A special-shaped NdFeB magnet processing mold, comprising a base (1), a barrel (2) mounted on the base (1) for crushing raw materials, a transmission shaft (7) for providing power to the barrel (2), and a template (8) for shaping the raw materials; It is characterized in that The barrel body (2) comprises a swing cone (3) for oscillating and crushing raw materials, a hopper (4) for convenient material discharge, an extrusion ring (5) for controlling the degree of crushing of the raw materials, and a rotating shaft (6) for controlling the discharge speed. The barrel body (2) is mounted on the upper surface of the base (1), the transmission shaft (7) is mounted on the base (1) and passes through the side wall of the barrel body (2), the template (8) is arranged on the lower surface of the base (1) and directly below the barrel body (2), the rotating shaft (6) is mounted at the inner center of the barrel body (2) and connected to the transmission shaft (7), the swing cone (3) is arranged on the top of the rotating shaft (6), the hopper (4) is mounted on the top of the barrel body (2), and the extrusion ring (5) is mounted on the lower surface of the hopper (4) and surrounds the swing cone (3).

2. A special-shaped NdFeB magnet processing mold according to claim 1, characterized in that: The swing cone (3) comprises a damping ring (31), a cam (32), a column (33) and a limiting groove (34); the cam (32) is arranged at the bottom of the swing cone (3) and connected to the rotating shaft (6); the damping ring (31) is installed above the rotating shaft (6) and surrounds the cam (32); the column (33) is installed on the cam (32); and the limiting groove (34) is opened on the side of the lower surface of the swing cone (3).

3. A special-shaped NdFeB magnet processing mold according to claim 2, characterized in that: The shock absorbing ring (31) comprises a telescopic rod (311), a spring (312) and a positioning ring (313). The positioning ring (313) is installed above the rotating shaft (6) and below the shock absorbing ring (31). The telescopic rod (311) array is arranged on the top and side of the positioning ring (313). The telescopic rod (311) is connected to the shock absorbing ring (31). The spring (312) surrounds the outside of the telescopic rod (311).

4. A special-shaped NdFeB magnet processing mold according to claim 2, characterized in that: The column (33) comprises a cavity (332), a spherical joint (331), a fitting disk (333) and a square joint (334); the cavity (332) is arranged at the top of the swing cone (3); the spherical joint (331) is installed at the top of the column (33) and is located in the cavity (332); the fitting disk (333) is installed in the cavity (332) and is connected to the top of the spherical joint (331); and the square joint (334) is installed at the bottom of the column (33).

5. The special-shaped NdFeB magnet processing mold according to claim 1, characterized in that: The material dropping hopper (4) comprises a rotating frame (41), a handle (42), a threaded interface (43) and a ring frame (44). The rotating frame (41) is mounted on the top of the material dropping hopper (4), the handle (42) is arranged on the rotating frame (41), the threaded interface (43) is arranged on the outer wall of the material dropping hopper (4), and the ring frame (44) is mounted on the top of the barrel body (2) and is engaged with the threaded interface (43).

6. The special-shaped NdFeB magnet processing mold according to claim 1, characterized in that: The rotating shaft (6) comprises a cone disk (61), a bevel gear (62), a shield (63) and a feeding rod (64); the cone disk (61) is arranged at the top of the rotating shaft (6); the bevel gear (62) is installed at one end of the transmission shaft (7) and meshes with the cone disk (61); the shield (63) surrounds the outer side of the rotating shaft (6); and the feeding rod (64) is installed at the bottom of the rotating shaft (6).

7. The special-shaped NdFeB magnet processing mold according to claim 1, characterized in that: The transmission shaft (7) comprises a motor (71) and a lever arm (72); the motor (71) is mounted on the upper surface of the base (1) and connected to the transmission shaft (7); and the lever arm (72) surrounds the outer side of the transmission shaft (7).

8. The special-shaped NdFeB magnet processing mold according to claim 1, characterized in that: The template (8) comprises a sealing ring (81), a discharge port (82) and a mold groove (83); the sealing ring (81) is mounted on the upper surface of the template (8); the discharge port (82) is arranged at the bottom of the barrel body (2); and the mold groove (83) is arranged at the center of the template (8).

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