High-temperature-resistant neodymium-iron-boron sintering mold

Abstract

The utility model relates to neodymium iron boron sintering technical field discloses high temperature -resistant neodymium iron boron sintering mould, the upper surface of lower mould base is fixedly connected with the reinforcing column, the outside of reinforcing column is provided with upper die cover, the outside of lower mould base and upper die cover all is provided with protection assembly, the outside of lower mould base is provided with fixed component, the lower surface of upper die cover is pasted in the upper surface of lower mould base, the protection assembly includes temperature -resistant layer, the inside of temperature -resistant layer all sets up in the outside of lower mould base and upper die cover, the outside of temperature -resistant layer is provided with wear -resisting layer, the inside rotation of support plate is connected with the shaft. In the utility model, the rotation of the rotating shaft drives the rotation of the connecting plate, the rotating clamping plate is clamped into the inside of the connecting plate to complete the fixation, at this moment, the temperature -resistant layer and the wear -resisting layer provide temperature -resistant protection and wear -resisting protection, thereby can reach the effect of reducing sintering mould caving or partial peeling, improving the precision of neodymium iron boron body.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron sintering technology, and in particular to high-temperature resistant neodymium iron boron sintering molds. Background Technology

[0002] Neodymium iron boron (NdFeB) sintering molds are the core tools in the sintering process of NdFeB permanent magnet production. They are mainly used to support and shape the NdFeB blanks that have been pressed into shape. During the high-temperature sintering process, the high-temperature resistant molds ensure that the blanks maintain the preset shape during sintering through physical constraints, while also helping to control the shrinkage rate. They are key equipment to ensure the dimensional accuracy and structural integrity of NdFeB products.

[0003] Traditional sintering molds are prone to deformation or collapse due to high temperatures, and the concentration of internal stress generates microcracks, leading to mold breakage or localized peeling and a decrease in dimensional accuracy. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-temperature resistant NdFeB sintering mold, which aims to improve the problem that traditional sintering molds are prone to deformation or collapse due to high temperatures, resulting in a decrease in dimensional accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-temperature resistant NdFeB sintering mold includes a lower mold base, a reinforcing column fixedly connected to the upper surface of the lower mold base, an upper mold cover provided outside the reinforcing column, protective components provided outside both the lower mold base and the upper mold cover, a fixing component provided outside the lower mold base, and the lower surface of the upper mold cover adhering to the upper surface of the lower mold base.

[0007] Preferably, the protective component includes a heat-resistant layer, which is disposed on the outside of the lower mold base and the upper mold cover, and a wear-resistant layer is disposed on the outside of the heat-resistant layer.

[0008] Preferably, the fixing component includes a support plate, which is externally fixedly connected to the outside of the lower mold base. A rotating shaft is rotatably connected inside the support plate, and a connecting plate is fixedly connected to the outside of the rotating shaft. A side plate is fixedly connected to the outside of the upper mold cover, and a rotating clamping plate is fixedly connected to the outside of the upper mold cover. The outside of the rotating clamping plate is disposed inside the connecting plate.

[0009] Preferably, the lower mold base is provided with a mold body inside, and both lower surfaces of the mold body are provided with snap-fit ​​components. The mold body is provided with a neodymium iron boron body inside.

[0010] Preferably, the buckle assembly includes a buckle frame, the lower surface of which is fixedly connected to the lower surfaces of both sides of the mold body. A spring is provided inside the buckle frame, and a positioning post is provided at both ends of the spring. A push plate is fixedly connected to the upper surface of the positioning post.

[0011] Preferably, the lower mold base has connecting grooves on both sides inside, and the outer side of the card frame is set inside the connecting grooves.

[0012] Preferably, the lower mold base has slots on both sides, and the positioning post is positioned inside the slots.

[0013] Preferably, the push plate is externally slidably connected to the inside of both sides of the mold body.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the upper mold cover is positioned along the reinforcing column so that its lower surface is attached to the lower mold base. The rotating shaft drives the connecting plate to rotate, so that the rotating clamping plate is inserted into the interior of the connecting plate to complete the fixation. At this time, the heat-resistant layer and the wear-resistant layer provide heat-resistant protection and wear-resistant protection respectively during high-temperature sintering, thereby reducing the cracking or local peeling of the sintering mold and improving the precision of the NdFeB body.

[0016] 2. In this utility model, pushing the push plate compresses the positioning column spring, placing the clip frame into the connecting groove. Releasing the push plate causes the positioning column to embed into the clip groove under the spring force, thus fixing the mold body to the lower mold base. Pushing the push plate to pull out the clip frame allows for disassembly, thereby facilitating quick disassembly of the mold body by operators and improving maintenance portability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the high-temperature resistant NdFeB sintering mold proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the lower mold base of the high-temperature resistant NdFeB sintering mold proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the connecting plate of the high-temperature resistant NdFeB sintering mold proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the mold body of the high-temperature resistant NdFeB sintering mold proposed in this utility model.

[0021] Figure 5 This is a partial structural diagram of the positioning column of the high-temperature resistant NdFeB sintering mold proposed in this utility model.

[0022] Legend:

[0023] 1. Lower mold base; 2. Reinforcing column; 3. Upper mold cover; 4. Protective components; 401. Wear-resistant layer; 402. Temperature-resistant layer; 5. Fixing components; 501. Support plate; 502. Rotating shaft; 503. Connecting plate; 504. Side plate; 505. Rotating clamping plate; 6. Mold body; 7. Buckle assembly; 701. Buckle frame; 702. Spring; 703. Positioning column; 704. Push plate; 8. Connecting groove; 9. Buckle slot; 10. Neodymium iron boron body. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Reference Figures 1-3 An embodiment of this utility model is provided: a high-temperature resistant neodymium iron boron sintering mold, including a lower mold base 1, a reinforcing column 2 fixedly connected to the upper surface of the lower mold base 1, an upper mold cover 3 provided outside the reinforcing column 2, a protective component 4 provided outside both the lower mold base 1 and the upper mold cover 3, a fixing component 5 provided outside the lower mold base 1, and the lower surface of the upper mold cover 3 attached to the upper surface of the lower mold base 1.

[0026] Specifically, the lower mold base 1 is used to fix the reinforcing column 2, which is a carbon fiber reinforcing rib, to enhance the overall structural strength and position the upper mold cover 3, thereby improving the overall flexural strength. The upper mold cover 3 and the lower mold base 1 cooperate to form a closed cavity to constrain the NdFeB blank. The protective component 4 is used to improve the temperature resistance and wear resistance of the lower mold base 1 and the upper mold cover 3. The fixing component 5 is used to fix the position of the upper mold cover 3 and the lower mold base 1 to ensure a tight fit.

[0027] Reference Figures 2-4 The protective component 4 includes a heat-resistant layer 402, the inner side of which is disposed on the outside of the lower mold base 1 and the upper mold cover 3, and a wear-resistant layer 401 is disposed on the outer side of the heat-resistant layer 402; the fixing component 5 includes a support plate 501, the support plate 501 is fixedly connected to the outside of the lower mold base 1, the support plate 501 is rotatably connected to the inside of the support plate 501, the rotating shaft 502 is fixedly connected to the outside of the rotating shaft 502, the upper mold cover 3 is fixedly connected to the outside of the side plate 504, the upper mold cover 3 is fixedly connected to the outside of the rotating plate 505, and the rotating plate 505 is disposed on the outside of the connecting plate 503.

[0028] Specifically, the heat-resistant layer 402 is made of graphite and is used to improve the high-temperature resistance of the lower mold base 1 and the upper mold cover 3. The wear-resistant layer 401 is made of carbon fiber woven mesh and is used to enhance the surface wear resistance of the heat-resistant layer 402. The support plate 501 supports the rotation of the rotating shaft 502. The rotating shaft 502 supports the rotation of the connecting plate 503. The connecting plate 503 cooperates with the rotating clamping plate 505. The side plate 504 is used for auxiliary positioning and together fixes the upper mold cover 3 and the lower mold base 1, thereby reducing the cracking or local peeling of the sintering mold.

[0029] Reference Figures 3-5 The lower mold base 1 has a mold body 6 inside, and a snap-fit ​​assembly 7 is provided on both lower surfaces of the mold body 6. A neodymium iron boron body 10 is provided inside the mold body 6. The snap-fit ​​assembly 7 includes a snap frame 701, the lower surface of which is fixedly connected to the lower surfaces of both sides of the mold body 6. A spring 702 is provided inside the snap frame 701, and a positioning post 703 is provided at both ends of the spring 702. A push plate 704 is fixedly connected to the upper surface of the positioning post 703. Connecting grooves 8 are opened inside both sides of the lower mold base 1, and the outer part of the snap frame 701 is located inside the connecting grooves 8. Slots 9 are opened inside both sides of the lower mold base 1, and the outer part of the positioning post 703 is located inside the slots 9. The outer part of the push plate 704 is slidably connected to the inner sides of the mold body 6.

[0030] Specifically, the mold body 6 is used to accommodate and shape the neodymium iron boron body 10, the buckle assembly 7 is used to fix the mold body 6 and the lower mold base 1, the clip frame 701 cooperates with the connecting groove 8 to achieve initial positioning, the spring 702 is used to provide elastic force to push the positioning post 703 into the clip groove 9 to complete the positioning, and the push plate 704 is used to drive the positioning post 703 out of the clip groove 9 to disassemble the mold body 6, thereby achieving the effect of facilitating the operator to quickly disassemble the mold body 6.

[0031] Working principle: When using this high-temperature resistant NdFeB sintering mold, first place the NdFeB body 10 into the mold body 6, push the push plate 704 to compress the spring 702 in the frame 701, and place the frame 701 into the connecting groove 8 of the lower mold base 1. Release the push plate 704, and the positioning post 703 will be embedded into the groove 9 under the elastic force of the spring 702, thus completing the fixation of the mold body 6 and the lower mold base 1. When disassembly is required, push the push plate 704 to pull out the frame 701 to disassemble. This allows operators to quickly disassemble the mold body 6 and improve the ease of maintenance and portability.

[0032] Then, the upper mold cover 3 is positioned along the reinforcing column 2 so that its lower surface fits against the lower mold base 1. The rotating shaft 502 on the support plate 501 is rotated to drive the connecting plate 503 to rotate, so that the rotating clamping plate 505 is inserted into the interior of the connecting plate 503. The side plate 504 assists in limiting the position, thus completing the fixation of the upper mold cover 3 and the lower mold base 1. At this time, the heat-resistant layer 402 and the wear-resistant layer 401 provide heat-resistant protection and wear-resistant protection respectively during high-temperature sintering, thereby reducing the cracking or local peeling of the sintering mold and improving the precision of the NdFeB body 10.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature resistant NdFeB sintering mold, comprising a lower mold base (1), characterized in that: A reinforcing column (2) is fixedly connected to the upper surface of the lower mold base (1). An upper mold cover (3) is provided on the outside of the reinforcing column (2). Protective components (4) are provided on the outside of both the lower mold base (1) and the upper mold cover (3). A fixing component (5) is provided on the outside of the lower mold base (1). The lower surface of the upper mold cover (3) is attached to the upper surface of the lower mold base (1).

2. The high-temperature resistant NdFeB sintering mold according to claim 1, characterized in that: The protective component (4) includes a heat-resistant layer (402), the inner side of which is disposed on the outside of the lower mold base (1) and the upper mold cover (3), and the outer side of which is disposed of a wear-resistant layer (401).

3. The high-temperature resistant NdFeB sintering mold according to claim 2, characterized in that: The fixing component (5) includes a support plate (501), which is fixedly connected to the outside of the lower mold base (1). A rotating shaft (502) is rotatably connected inside the support plate (501). A connecting plate (503) is fixedly connected to the outside of the rotating shaft (502). A side plate (504) is fixedly connected to the outside of the upper mold cover (3). A rotating clamping plate (505) is fixedly connected to the outside of the upper mold cover (3). The rotating clamping plate (505) is disposed inside the connecting plate (503).

4. The high-temperature resistant NdFeB sintering mold according to claim 1, characterized in that: The lower mold base (1) is provided with a mold body (6) inside. Both sides of the lower surface of the mold body (6) are provided with snap-fit ​​components (7). The mold body (6) is provided with a neodymium iron boron body (10) inside.

5. The high-temperature resistant NdFeB sintering mold according to claim 4, characterized in that: The buckle assembly (7) includes a buckle frame (701), the lower surface of which is fixedly connected to the lower surfaces of both sides of the mold body (6). A spring (702) is provided inside the buckle frame (701), and a positioning post (703) is provided at both ends of the spring (702). A push plate (704) is fixedly connected to the upper surface of the positioning post (703).

6. The high-temperature resistant NdFeB sintering mold according to claim 5, characterized in that: The lower mold base (1) has connecting grooves (8) on both sides inside, and the outer side of the card frame (701) is set inside the connecting grooves (8).

7. The high-temperature resistant NdFeB sintering mold according to claim 6, characterized in that: The lower mold base (1) has slots (9) on both sides inside, and the positioning post (703) is set outside the slots (9).

8. The high-temperature resistant NdFeB sintering mold according to claim 5, characterized in that: The push plate (704) is externally slidably connected to the inside of both sides of the mold body (6).

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