Sintering device for ultra-micro neodymium-iron-boron sintered magnet

Abstract

The sintering device comprises a sintering furnace body, a plurality of supports and a sealing mechanism, the supports and the sealing mechanism are mounted on the sintering furnace body, a heating mechanism is arranged in the sintering furnace body, fixing frames are fixedly connected to the two sides of two protection plates, and inserting rods are slidably connected to the fixing frames. Limiting seats are fixedly connected to the two ends of the two fixing plates, limiting holes are formed in the limiting seats, and the inserting rods are inserted into the limiting holes; according to the device, the box bodies containing the magnets are stacked on the containing plate, after stacking is completed, the two protection plates with the holes are rotated to be erected, at the moment, the protection plates abut against the fixing plates on the containing plate, the inserting rods are further inserted into the limiting holes in the limiting seats, and the protection plates and the fixing plates are limited through the inserting rods; and at the moment, the protection plate cannot be turned over, the box body on the placing plate is protected, and the situation that the magnet is damaged due to falling of the box body caused by shaking of the pallet fork during feeding and discharging is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the sintering field of neodymium-iron-boron magnets, in particular to a sintering device for sintering neodymium-iron-boron magnets of a special micro size. BACKGROUND

[0002] A neodymium-iron-boron magnet, also known as a neodymium-iron-boron magnet, is an intermetallic compound formed by rare earth element neodymium (Nd) and iron (Fe) and boron (B). The neodymium-iron-boron magnet sintering furnace, especially the neodymium-iron-boron single-chamber vacuum sintering furnace, is a special equipment specially used for preparing high-performance neodymium-iron-boron permanent magnet materials. The working principle of the neodymium-iron-boron magnet sintering furnace is mainly based on high-temperature sintering of neodymium-iron-boron powder in a vacuum environment. At high temperature, the metallurgical bonding between powder particles is enhanced, thereby improving the density and magnetic properties of the material. The vacuum environment helps to reduce oxidation and impurity pollution, ensuring the purity and quality of the final product.

[0003] At present, when sintering neodymium-iron-boron magnets of a special micro size through a sintering furnace, the placing plate is usually supported outside the furnace body by the forks of a forklift, the box bodies loaded with magnets are stacked on the placing plate, and then the placing plate is sent into the interior of the sintering furnace by the forklift to sinter the magnets. However, after the box bodies are stacked, no protective components are arranged on both sides of the placing plate, and the box bodies on the placing plate are prone to shaking and falling when the forklift is loading and unloading, thereby causing damage to the sintered magnets. CONTENT OF THE UTILITY MODEL

[0004] By arranging the protective mechanism on both sides of the placing plate of the neodymium-iron-boron magnet, it is ensured that the box bodies on the placing plate will not fall due to shaking when the forklift is loading and unloading the magnets, and the integrity of the magnets is ensured. The application provides a sintering device for sintering neodymium-iron-boron magnets of a special micro size.

[0005] The application provides a sintering device for sintering neodymium-iron-boron magnets of a special micro size, which adopts the following technical scheme:

[0006] A sintering device for sintering neodymium-iron-boron magnets of a special micro size, comprising a sintering furnace body and a plurality of supports mounted on the sintering furnace body and a sealing mechanism, wherein the interior of the sintering furnace body is provided with a heating mechanism, the heating mechanism is provided with a placing mechanism, the placing mechanism comprises two sliding rails, the heating mechanism is provided with two sliding rails, the two sliding rails are provided with a placing plate, the placing plate is provided with a protective mechanism, the protective mechanism comprises two fixed plates, the two sides of the placing plate are provided with two fixed plates, the two fixed plates are provided with hinges at equal intervals, the two groups of hinges are provided with protective plates, the two sides of the two protective plates are provided with fixed frames, the fixed frames are provided with plug rods in a sliding manner, the two ends of the two fixed plates are provided with limiting seats in a fixed manner, the limiting seats are provided with limiting holes, and the plug rods are inserted into the limiting holes.

[0007] By adopting the technical scheme, the insertion rod is inserted into the inside of the limiting hole on the limiting seat, at this time, the protection plate is limited, the box body provided with the magnet can be protected when the forklift is loaded and unloaded on the fork, the box body is prevented from falling due to shaking, and the integrity of the magnet is protected.

[0008] Optionally, the placing mechanism further comprises limiting strips, and the bottom of the placing plate is fixed with two groups of limiting strips.

[0009] By adopting the technical scheme, the placing plate is transversely limited on the two sliding rails, accurate placement of the placing plate is realized, and imbalance is avoided.

[0010] Optionally, the two groups of limiting strips are slidingly connected between the two sliding rails, and the bottom of the two opposite limiting strips is in an eight-shaped structure.

[0011] By adopting the technical scheme, when the fork of the forklift falls on the placing plate, the two limiting strips fall into the outside of the sliding rail, and alignment is facilitated.

[0012] Optionally, the protection mechanism further comprises limiting plates, and the insertion rod at the two ends of each protection plate is fixedly connected with a limiting plate located at the bottom of the fixed frame.

[0013] By adopting the technical scheme, the insertion rod is limited, and the insertion rod is prevented from falling when the protection plate is in the initial position.

[0014] Optionally, the insertion rod is in an inverted L-shaped structure, and the insertion rod and the limiting plate are in an F-shaped structure.

[0015] By adopting the technical scheme, the insertion rod is facilitated to be pulled out.

[0016] Optionally, the heating mechanism comprises a sintering box, the sintering furnace body is internally provided with the sintering box, two groups of mounting strips are oppositely arranged in the sintering box, a plurality of heating rods are equidistantly arranged between the two mounting strips on the same side, the two sliding rails are respectively fixed on the two groups of mounting strips, and the mounting strips are in a U-shaped structure.

[0017] By adopting the technical scheme, when the magnet is placed in the sintering box, the heating rod can be started to heat and sinter the magnet.

[0018] Optionally, the heating mechanism further comprises two bottom frames, and the bottom of the sintering box is fixedly connected with the two bottom frames.

[0019] By adopting the technical scheme, the sintering box is supported, and the sintering box is prevented from being damaged after the magnet is fed.

[0020] Optionally, the sealing mechanism comprises a mounting frame, both ends of the sintering furnace body are fixedly connected with mounting frames, and the sealing covers are rotationally connected to the mounting frames.

[0021] By rotating the sealing cover, the sealing cover is sealed with the sintering furnace body, and heat flow is avoided to affect the heating and sintering of the magnet.

[0022] Optionally, the sealing mechanism further comprises a sealing ring, and the side surfaces of the two sealing covers are provided with sealing rings.

[0023] By adopting the above technical scheme, the sealing performance of the sealing cover on the sintering furnace body is improved.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] By stacking the box bodies containing magnets on the placement plate, the two hole protection plates can be rotated and erected after stacking, at this time, the protection plates are in contact with the fixed plates on the placement plate, and the insertion rod is inserted into the limiting hole in the limiting seat, thereby limiting the protection plates and the fixed plates through the insertion rod, at this time, the protection plates cannot be turned over, the box bodies on the placement plate are protected, and the box bodies can be prevented from falling and being damaged by the shaking of the forklift during feeding and discharging.

[0026] By arranging the slide rails fixed with the heating mechanism at the bottom of the placement plate, the placement plate is supported to avoid damaging the heating mechanism, and the placement plate is transversely limited by the limiting strips to avoid displacement during heating. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is Figure 1 It is a schematic diagram of the connection structure of the sintering box, the placement plate and the heating rod.

[0029] Figure 3 It is Figure 2 It is a schematic diagram of the connection structure of the protection plate and the insertion rod.

[0030] Figure 4 It is Figure 3 It is an enlarged schematic diagram of the A part structure.

[0031] Figure 5 It is Figure 3 It is a schematic diagram of the connection structure of the placement plate, the fixed plate and the protection plate.

[0032] Mark No. : 1, sintering furnace body; 2, support; 3, sealing mechanism; 301, sealing cover; 302, sealing ring; 303, mounting frame; 4, heating mechanism; 401, sintering box; 402, base frame; 403, mounting strip; 404, heating rod; 5, placing mechanism; 501, placing plate; 502, sliding rail; 503, limiting strip; 6, protection mechanism; 601, protection plate; 602, insertion rod; 603, fixed plate; 604, hinge; 605, limiting seat; 606, limiting hole; 607, limiting plate; 608, fixed frame. DETAILED DESCRIPTION

[0033] The following will be described in detail with reference to the accompanying drawings Figures 1-5 The application is further described in detail.

[0034] The embodiment of the application discloses a sintering device for superfine size Nd-Fe-B sintered magnet. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 A sintering device for superfine size Nd-Fe-B sintered magnet, comprising a sintering furnace body 1 and a plurality of supports 2 and a sealing mechanism 3 mounted on the sintering furnace body 1, wherein the inside of the sintering furnace body 1 is provided with a heating mechanism 4.

[0035] After placing the box body provided with the magnet on the placing plate 501, the two protection plates 601 are rotated to abut against the fixed plate 603, and the insertion rods 602 are inserted into the limiting holes 606 in the limiting seats 605, so that the protection plates 601 are limited, the box body provided with the magnet can be protected when being loaded and unloaded on the forks of the forklift, the box body is prevented from falling due to shaking, and the integrity of the magnet is protected.

[0036] The heating mechanism 4 is provided with a placing mechanism 5, the placing mechanism 5 comprises two sliding rails 502, the heating mechanism 4 is provided with the two sliding rails 502, the two sliding rails 502 are provided with the placing plate 501, and the placing plate 501 is provided with the protection mechanism 6.

[0037] Referring to Figure 2 and Figure 5 , in order to limit the insertion rod 602 and prevent the insertion rod 602 from falling when the protection plate 601 is in the initial position, the protection mechanism 6 further comprises a limiting plate 607, and the insertion rod 602 at each end of the two protection plates 601 is fixedly connected with the limiting plate 607 located at the bottom of the fixed frame 608.

[0038] Referring to Figure 1 、 Figure 2 and Figure 4The heating mechanism 4 comprises a sintering box 401, the inside of the sintering furnace body 1 is provided with the sintering box 401, the inside of the sintering box 401 is oppositely provided with two groups of mounting strips 403, a plurality of heating rods 404 are equidistantly mounted between two mounting strips 403 on the same side, and the heating rods 404 can be started to heat and sinter the magnet after the magnet is placed in the inside of the sintering box 401.

[0039] With reference to Figure 1 The sealing mechanism 3 comprises a mounting frame 303, the two ends of the sintering furnace body 1 are fixedly connected with the mounting frame 303, the two mounting frames 303 are rotatably connected with the sealing cover 301, and the sealing mechanism 3 further comprises a sealing ring 302, and the side surface of the sealing cover 301 is provided with the sealing ring 302.

[0040] The embodiment of the application discloses a sintering device for a special micro-size Nd-Fe-B sintered magnet, and the implementation principle is as follows: in use, a sealing cover 301 located on a sintering furnace body 1 is opened, a forklift is driven to correspond to the sintering furnace body 1, a forklift on the forklift is started, a placing plate 501 is placed on the forklift, and at this time, two groups of limiting strips 503 at the bottom of the placing plate 501 correspond to two slide rails 502 respectively, at this time, two protective plates 601 are in a retracted state and are not erected, a box body loaded with magnets can be stacked on the placing plate 501, after the stacking is completed, the two protective plates 601 with holes can be rotated and erected, at this time, the protective plates 601 abut against fixed plates 603 on the placing plate 501, the insertion rod 602 is further inserted into the limiting hole 606 in the limiting seat 605, the protective plates 601 and the fixed plates 603 are limited by the insertion rod 602, at this time, the protective plates 601 cannot be turned over, the box body on the placing plate 501 is protected, the box body can be prevented from falling and being damaged due to shaking when the forklift loads and unloads, after the protective plates 601 are installed, the placing plate 501 is sent into the sintering box 401 by driving the forklift, the placing plate 501 abuts against the slide rail 502, the two groups of limiting strips 503 can limit the placing plate 501 transversely, the placing plate 501 is prevented from moving, the sealing cover 301 is closed, the heating rod 404 is started, and the magnets can be heated and sintered, the protective plates 601 have holes, heat transfer is facilitated, and sintering of the magnets is facilitated, after sintering is completed, the forklift is moved to the end of the sintering furnace body 1 again, the forklift is inserted into the sintering box 401, the forklift is located at the bottom of the placing plate 501, the placing plate 501 is lifted, the forklift retreats to take out the magnets on the placing plate 501, when the magnets are unloaded, the insertion rod 602 is pulled to separate the insertion rod 602 from the limiting seat 605, the protective plates 601 are turned over to the initial state, and the limiting plate 607 is arranged on the insertion rod 602, when the protective plates 601 are turned over, the insertion rod 602 will not fall off.

[0041] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: equivalent changes made on the basis of the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A sintering device for sintering a special micro-sized neodymium-iron-boron sintered magnet, comprising a sintering furnace body (1) and a plurality of supports (2) and a sealing mechanism (3) installed on the sintering furnace body (1), characterized in that: The inside of the sintering furnace body (1) is provided with a heating mechanism (4), the heating mechanism (4) is provided with a placing mechanism (5), the placing mechanism (5) comprises two slide rails (502), the heating mechanism (4) is provided with two slide rails (502), the two slide rails (502) are provided with a placing plate (501), the placing plate (501) is provided with a protection mechanism (6), the protection mechanism (6) comprises two fixed plates (603), the two side edges of the placing plate (501) are fixedly connected with two fixed plates (603), the two fixed plates (603) are both provided with hinges (604) at equal intervals, the two groups of hinges (604) are both hingedly connected with protection plates (601), the two sides of the two protection plates (601) are fixedly connected with fixed frames (608), the fixed frames (608) are slidably connected with inserting rods (602), the two ends of the two fixed plates (603) are both fixedly connected with limiting seats (605), the limiting seats (605) are provided with limiting holes (606), and the inserting rods (602) are inserted into the limiting holes (606).

2. The sintering device of the extra-fine grain Nd-Fe-B sintered magnet according to claim 1, wherein: The placing mechanism (5) further comprises limiting strips (503), and the bottom of the placing plate (501) is fixedly connected with two groups of limiting strips (503).

3. The sintering device of the extra-fine grain Nd-Fe-B sintered magnet according to claim 2, wherein: The two groups of limiting strips (503) are slidably connected with the two slide rails (502) respectively, and the bottoms of the two limiting strips (503) opposite to each other are in a spade shape.

4. The sintering device of the extra-fine grain Nd-Fe-B sintered magnet according to claim 1, wherein: The protection mechanism (6) further comprises limiting plates (607), and the inserting rods (602) at the two ends of the two protection plates (601) are fixedly connected with limiting plates (607) located at the bottom of the fixed frame (608).

5. The sintering device of the extra-fine grain Nd-Fe-B sintered magnet according to claim 4, wherein: The inserting rod (602) is in an inverted L-shaped structure, and the inserting rod (602) and the limiting plate (607) are in an F-shaped structure.

6. The sintering device of the extra-fine grain Nd-Fe-B sintered magnet according to claim 1, wherein: The heating mechanism (4) comprises a sintering box (401), the inside of the sintering furnace body (1) is provided with the sintering box (401), the inside of the sintering box (401) is provided with two groups of mounting strips (403) opposite to each other, a plurality of heating rods (404) are mounted between the two mounting strips (403) on the same side at equal intervals, the two slide rails (502) are fixed on the two groups of mounting strips (403) respectively, and the mounting strip (403) is in a n-shaped structure.

7. The sintering device of a special micro-sized Nd-Fe-B sintered magnet according to claim 6, characterized in that: The heating mechanism (4) further comprises two chassis (402), and the bottom of the sintering box (401) is fixedly connected with the two chassis (402) opposite to each other.

8. The sintering device of the extra-fine grain Nd-Fe-B sintered magnet according to claim 1, wherein: The sealing mechanism (3) comprises a mounting frame (303), and the two ends of the sintering furnace body (1) are fixedly connected with mounting frames (303); the two mounting frames (303) are both rotatably connected with sealing covers (301).

9. The sintering device of a special micro-sized Nd-Fe-B sintered magnet according to claim 8, characterized in that: The sealing mechanism (3) further comprises a sealing ring (302), and the side surfaces of the two sealing covers (301) are provided with sealing rings (302).

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