Vacuum sintering furnace for neodymium-iron-boron magnet machining
By setting up shock absorption and noise reduction mechanisms in the vacuum sintering furnace, the problems of vibration and noise of the vacuum pump are solved, and the stable operation of the equipment and the quiet working environment are achieved.
Patent Information
- Application Number
- CN202420921647.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The mechanical vibration and noise generated by the vacuum pump in the vacuum sintering furnace during operation affects the normal operation of the equipment and the health of the staff.
A vacuum sintering furnace for neodymium iron boron magnet processing is designed, using shock absorbing and noise reduction mechanisms to absorb and buffer the vibration of the vacuum pump and isolating the vacuum pump from the outside world.
It effectively suppresses the vibration and noise of the vacuum pump, ensures the stable operation of the equipment, reduces the potential threat to the health of the staff, and provides a quieter working environment.
Smart Images
Figure CN222670636U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of NdFeB magnet processing equipment, in particular to a vacuum sintering furnace for NdFeB magnet processing. Background Art
[0002] NdFeB magnets, also known as rare earth permanent magnet materials, are a kind of magnetic material made by preparing and sintering metal praseodymium and neodymium as the main raw materials. Its main components are alloy elements of neodymium and iron, hence the name NdFeB. This magnet has the characteristics of high remanence, high coercivity and high magnetic field strength. It can maintain its magnetism for a long time in the absence of oxygen and high temperature, has good thermal stability and chemical stability, and high corrosion resistance. The biggest feature is that it can be filled with a larger volume of magnets, and the demagnetization field is very small.
[0003] In the processing of NdFeB magnets, vacuum sintering furnace plays a vital role. This special equipment is mainly used for the sintering process of NdFeB magnets, and the NdFeB material is sintered into shape through high-temperature heat treatment. The vacuum sintering furnace is mainly composed of a heating chamber, a vacuum system, a gas control system, a temperature control system, etc. One of the core components of the vacuum sintering furnace is the vacuum pump, which is responsible for establishing and maintaining the required vacuum environment in the furnace to ensure that the magnet is protected from external impurities during the sintering process, thereby improving the purity and performance of the magnet.
[0004] However, the vacuum pump will inevitably generate certain mechanical vibrations during operation. If these vibrations are not effectively suppressed or isolated, it will not only affect the normal operation of the vacuum pump, reduce its working efficiency and life, but also have adverse effects on the surrounding environment, such as noise pollution. In the processing workshop, when multiple vacuum sintering furnaces are running at the same time to process a large number of orders, the vacuum pump will generate long-term noise pollution, which poses a potential threat to the health and production safety of the staff. Long-term exposure to noise environment may cause hearing loss, increased psychological pressure, accumulated fatigue and other problems, which in turn affect work efficiency and safety. Utility Model Content
[0005] In view of the above problems, the purpose of the utility model is to overcome the shortcomings of the prior art and design a vacuum sintering furnace for processing NdFeB magnets.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum sintering furnace for processing NdFeB magnets, comprising a furnace body and a vacuum system for creating and maintaining a high vacuum environment in a heating chamber in the furnace body, the vacuum system comprising a fixed bracket and a vacuum pump, the vacuum pump being arranged on the fixed bracket, the output end of the vacuum pump being connected to the heating chamber through a pipeline, and also comprising a shock absorbing mechanism and a noise reduction mechanism, the shock absorbing mechanism being arranged between the vacuum pump and the fixed bracket, the shock absorbing mechanism being used to absorb and buffer the vibration generated when the vacuum pump is working, the noise reduction mechanism being arranged on the outside of the vacuum pump, and the noise reduction mechanism being used to isolate the vacuum pump from the outside.
[0007] As a preferred embodiment of the utility model, the shock absorbing mechanism includes a fixed base, a movable top plate and an elastic member, the fixed base is arranged on a fixed bracket, the movable top plate is arranged on the top of the fixed base, the elastic member is arranged between the fixed base and the movable top plate, and the vacuum pump is arranged on the movable top plate.
[0008] As a preferred embodiment of the utility model, a limiting slide groove in a vertical state is provided on the fixed base, a limiting slider that slides with the limiting slide groove is provided at the bottom of the movable top plate, the movable top plate is slidably arranged on the fixed base along the vertical direction, and the elastic member is arranged between the limiting slide groove and the limiting slider.
[0009] As a preferred embodiment of the utility model, the elastic member is a spring, a first spring slot is provided in the limiting slide groove, a second spring slot is provided at one end of the limiting slider close to the limiting slide groove, one end of the spring is arranged in the first spring slot, and the other end of the spring is arranged in the second spring slot.
[0010] As a preferred embodiment of the utility model, the shock absorbing mechanism further includes a shock absorbing cushion, the shock absorbing cushion is arranged between the fixed base and the fixed bracket, and the shock absorbing cushion is made of rubber material.
[0011] As a preferred embodiment of the utility model, the noise reduction mechanism includes a soundproof cover, the soundproof cover is arranged on a fixed bracket, and the vacuum pump and the shock absorbing mechanism are both located in the soundproof cover, and the soundproof cover is made of sound insulation material.
[0012] As a preferred embodiment of the utility model, an inspection opening is provided on the side of the soundproof cover, an inspection door fixedly connected to the soundproof cover by a hinge is provided at the inspection opening, and a rubber strip is provided between the inspection opening and the inspection door.
[0013] As a preferred embodiment of the utility model, the inspection door is provided with an observation port, and the observation port is provided with soundproof glass.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] The utility model absorbs and buffers the mechanical vibration generated by the vacuum pump when it is working by means of a shock-absorbing mechanism arranged between the vacuum pump and the fixed bracket, thereby preventing the vibration from being transmitted to the fixed bracket, thereby ensuring the stable operation of the vacuum pump. The vacuum pump is isolated from the outside by means of a noise reduction mechanism arranged outside the vacuum pump, thereby effectively reducing the noise generated by the vacuum pump when it is working, and providing a quieter working environment for the operator.
[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0018] Figure 1 It is a three-dimensional structural schematic diagram of a vacuum sintering furnace for processing NdFeB magnets.
[0019] Figure 2 The present invention is a three-dimensional structural schematic diagram of a shock absorbing mechanism in a vacuum sintering furnace for processing NdFeB magnets.
[0020] Figure 3 This is a cross-sectional view of the structure of the vibration reduction mechanism in the vacuum sintering furnace used for processing NdFeB magnets. Figure 1 .
[0021] Figure 4 This is a cross-sectional view of the structure of the vibration reduction mechanism in the vacuum sintering furnace used for processing NdFeB magnets. Figure 2 .
[0022] Figure 5 A three-dimensional schematic diagram of the noise reduction mechanism in a vacuum sintering furnace for processing NdFeB magnets Figure 1 .
[0023] Figure 6 A three-dimensional schematic diagram of the noise reduction mechanism in a vacuum sintering furnace for processing NdFeB magnets Figure 2 .
[0024] Reference numerals include:
[0025] 1. Furnace body; 2. Vacuum system; 21. Fixed bracket; 22. Vacuum pump; 3. Shock-absorbing mechanism; 31. Fixed base; 311. Limit slide groove; 312. First spring slot; 32. Movable top plate; 321. Limit slide block; 322. Second spring slot; 33. Elastic member; 34. Shock-absorbing cushion; 4. Noise reduction mechanism; 41. Soundproof cover; 411. Inspection port; 42. Inspection door; 421. Observation port. DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0027] like Figures 1 to 6 As shown, a vacuum sintering furnace for processing NdFeB magnets described in the utility model includes a furnace body 1 and a vacuum system 2 for creating and maintaining a high vacuum environment in a heating chamber in the furnace body 1, wherein the vacuum system 2 includes a fixed bracket 21 and a vacuum pump 22, wherein the vacuum pump 22 is arranged on the fixed bracket 21, and the output end of the vacuum pump 22 is connected to the heating chamber through a pipeline, and further includes a shock absorbing mechanism 3 and a noise reduction mechanism 4, wherein the shock absorbing mechanism 3 is arranged between the vacuum pump 22 and the fixed bracket 21, wherein the shock absorbing mechanism 3 is used to absorb and buffer the vibration generated when the vacuum pump 22 is working, and wherein the noise reduction mechanism 4 is arranged on the outside of the vacuum pump 22, wherein the noise reduction mechanism 4 is used to isolate the vacuum pump 22 from the outside.
[0028] Specifically, a heating chamber is provided inside the furnace body 1 to provide a high temperature environment required for magnet sintering. The vacuum system 2 is composed of a fixed bracket 21 and a vacuum pump 22, and the vacuum pump 22 is firmly installed in an appropriate position through the fixed bracket 21. The output end of the vacuum pump 22 is connected to the heating chamber through a pipeline to ensure that the heating chamber can create and maintain a high vacuum environment, thereby preventing the magnet from being oxidized or otherwise contaminated during the sintering process.
[0029] The utility model uses a shock absorbing mechanism 3 disposed between the vacuum pump 22 and the fixed bracket 21 to absorb and buffer the mechanical vibration generated when the vacuum pump 22 is working, thereby preventing the vibration from being transmitted to the fixed bracket 21 and the entire sintering furnace, thereby ensuring the stable operation of the vacuum pump 22. At the same time, the utility model uses a noise reduction mechanism 4 disposed on the outside of the vacuum pump 22 to isolate the vacuum pump 22 from the outside, thereby effectively reducing the spread of noise, reducing the impact of the noise generated when the vacuum pump 22 is working on the working environment and the operator, and helping to protect the hearing health of the operator.
[0030] Further, refer to Figure 2and Figure 3 As shown, the shock absorbing mechanism 3 includes a fixed base 31, a movable top plate 32 and an elastic member 33. The fixed base 31 is arranged on the fixed bracket 21, the movable top plate 32 is arranged on the top of the fixed base 31, the elastic member 33 is arranged between the fixed base 31 and the movable top plate 32, and the vacuum pump 22 is arranged on the movable top plate 32.
[0031] Specifically, the fixed base 31 is firmly mounted on the fixed bracket 21, providing stable support for the entire shock absorbing mechanism 3. The movable top plate 32 is arranged on the top of the fixed base 31, and a certain space is formed between the movable top plate 32 and the fixed base 31, which provides conditions for the installation of the elastic member 33. The elastic member 33 is arranged between the fixed base 31 and the movable top plate 32. When the vibration generated by the vacuum pump 22 during operation is transmitted to the movable top plate 32, the elastic member 33 can exert its elastic characteristics to absorb and buffer these vibrations. In this way, the vibration will not be directly transmitted to the fixed base 31 and the fixed bracket 21, thereby avoiding the vibration and noise problems of the entire sintering furnace. At the same time, the vacuum pump 22 is arranged on the movable top plate 32. Since the movable top plate 32 and the fixed base 31 are connected by the elastic member 33, the vibration generated by the vacuum pump 22 can be effectively isolated and absorbed. This not only ensures the stable operation of the vacuum pump 22, but also extends its service life, while also reducing the potential damage to the entire sintering furnace.
[0032] Further, refer to Figure 2 , Figure 3 and Figure 4 As shown, the fixed base 31 is provided with a limiting slide groove 311 in a vertical state, and the bottom of the movable top plate 32 is provided with a limiting slider 321 that slidably cooperates with the limiting slide groove 311. The movable top plate 32 is slidably arranged on the fixed base 31 along the vertical direction, and the elastic member 33 is arranged between the limiting slide groove 311 and the limiting slider 321.
[0033] Specifically, through the sliding cooperation between the limiting slide groove 311 and the limiting slider 321, the movable top plate 32 can slide freely in the vertical direction when subjected to the vibration generated by the vacuum pump 22, thereby ensuring the stability of the movable top plate 32 during the sliding process. The elastic member 33 is arranged between the limiting slide groove 311 and the limiting slider 321, and its function is to absorb and disperse the vibration energy. When the movable top plate 32 is vibrated, the elastic member 33 will deform, thereby absorbing the vibration energy and converting it into heat energy or other forms of energy to dissipate. This not only improves the shock absorption effect of the shock absorbing mechanism 3, but also extends its service life. In addition, by adjusting the size and shape of the limiting slide groove 311 and the limiting slider 321 and the stiffness and damping characteristics of the elastic member 33, the performance of the shock absorbing mechanism 3 can be further optimized so that it can better adapt to the vibration characteristics under different working conditions.
[0034] Further, refer to Figure 2 , Figure 3 and Figure 4 As shown, the elastic member 33 is a spring, a first spring slot 312 is provided in the limiting slide groove 311, a second spring slot 322 is provided at one end of the limiting slider 321 close to the limiting slide groove 311, one end of the spring is arranged in the first spring slot 312, and the other end of the spring is arranged in the second spring slot 322.
[0035] Specifically, the spring can be firmly installed in the shock absorbing mechanism 3 through the first spring slot 312 and the second spring slot 322, and it is not easy to fall off or shift. During installation, one end of the spring is placed in the first spring slot 312, and the other end is placed in the second spring slot 322. In this way, when the movable top plate 32 is subjected to the vibration generated by the vacuum pump 22, the spring will deform and absorb the vibration energy. At the same time, due to the resilience of the spring, it can quickly return to its original state after the vibration disappears, preparing for the next vibration absorption. In addition, by adjusting parameters such as the stiffness, length and diameter of the spring, the performance of the shock absorbing mechanism 3 can be further optimized. For example, increasing the stiffness of the spring can improve its absorption capacity for large-amplitude vibrations, while increasing the length of the spring can improve its absorption effect for low-frequency vibrations.
[0036] Further, refer to Figure 2 and Figure 3 As shown, the shock absorbing mechanism 3 further includes a shock absorbing cushion 34 . The shock absorbing cushion 34 is arranged between the fixed base 31 and the fixed bracket 21 . The shock absorbing cushion 34 is made of rubber material.
[0037] Specifically, the shock-absorbing cushion 34 is arranged between the fixed base 31 and the fixed bracket 21, and acts as a buffer layer between the fixed base 31 and the fixed bracket 21. When the vibration generated by the vacuum pump 22 during operation is transmitted to the fixed base 31, the shock-absorbing cushion 34 can absorb and disperse the vibration energy by virtue of its soft and elastic properties, thereby reducing the impact of the vibration on the fixed bracket 21 and the entire sintering furnace. In particular, the shock-absorbing cushion 34 is made of rubber material. The rubber material has good elasticity and wear resistance, and can withstand large vibrations and shocks while maintaining stable performance. This material selection enables the shock-absorbing cushion 34 to maintain a good shock-absorbing effect during long-term use and extend its service life. In addition, by adjusting parameters such as the thickness, hardness and shape of the shock-absorbing cushion 34, its shock-absorbing performance can be further optimized. For example, increasing the thickness of the shock-absorbing cushion 34 can improve its shock-absorbing ability, while adjusting its hardness can adapt to vibrations of different frequencies and amplitudes.
[0038] Further, refer to Figure 5As shown, the noise reduction mechanism 4 includes a soundproof cover 41, which is arranged on the fixed bracket 21, and the vacuum pump 22 and the shock absorbing mechanism 3 are both located in the soundproof cover 41, and the soundproof cover 41 is made of sound insulation material.
[0039] Specifically, the soundproof cover 41 is arranged on the fixed bracket 21, ensuring its stability and fixed position. The soundproof cover 41 is made of soundproof material, which has good sound insulation performance and can absorb and reflect noise, thereby significantly reducing the propagation of noise. At the same time, since the vacuum pump 22 and the shock absorbing mechanism 3 are both located in the soundproof cover 41, the noise generated by the entire system during operation is effectively controlled inside the soundproof cover 41. This not only reduces the propagation range of the noise, but also enables the noise to be quickly absorbed and reflected after it is generated, further reducing the impact of the noise on the surrounding environment.
[0040] Further, refer to Figure 5 and Figure 6 As shown, an inspection opening 411 is provided on the side of the soundproof cover 41 , and an inspection door 42 fixedly connected to the soundproof cover 41 through a hinge is provided at the inspection opening 411 , and a rubber strip is provided between the inspection opening 411 and the inspection door 42 .
[0041] Specifically, the inspection port 411 makes it easier to carry out routine maintenance and inspection of the vacuum pump 22 and the shock absorbing mechanism 3. The inspection port 411 is provided with an inspection door 42, which is fixedly connected to the soundproof cover 41 by a hinge. The use of the hinge ensures the stability and flexibility of the inspection door 42 when opening and closing, and is also convenient for the operator to operate. In order to further enhance the sealing effect between the inspection port 411 and the inspection door 42, a rubber strip is also provided between them. The rubber strip has good elasticity and sealing properties, and can fit tightly on the contact surface of the inspection port 411 and the inspection door 42, effectively preventing the passage of noise and dust. This not only improves the overall performance of the noise reduction mechanism 4, but also extends the service life of the equipment. When the vacuum pump 22 or the shock absorbing mechanism 3 needs to be maintained and inspected, the operator only needs to open the inspection door 42 to perform necessary operations on the equipment through the inspection port 411. After the operation is completed, the inspection door 42 is closed and the rubber strip is ensured to fit tightly, so that the noise reduction function of the soundproof cover 41 can be restored.
[0042] Further, refer to Figure 5 and Figure 6 As shown, the inspection door 42 is provided with an observation port 421 , and the observation port 421 is provided with soundproof glass.
[0043] Specifically, the observation port 421 allows the operator to directly observe the working status of the vacuum pump 22 and the shock absorbing mechanism 3 through the observation port 421 without opening the inspection door 42. In order to ensure the sound insulation effect of the observation port 421 and prevent noise from leaking through this place, a soundproof glass is provided at the observation port 421. The soundproof glass is made of special soundproof materials, has good sound insulation performance, and can effectively block the propagation of noise. At the same time, the soundproof glass also has clear perspective, ensuring that the operator can clearly observe the operation of the equipment. Through the observation port 421 and the soundproof glass, the operator can understand the working status of the vacuum pump 22 and the shock absorbing mechanism 3 in real time, and promptly discover and deal with potential problems, thereby ensuring the stable operation of the equipment. In addition, the use of soundproof glass also ensures the sealing and sound insulation effect of the observation port 421, avoids noise leakage, and further improves the performance of the noise reduction mechanism 4.
[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A vacuum sintering furnace for processing NdFeB magnets, comprising a furnace body and a vacuum system (2) for creating and maintaining a high vacuum environment in a heating chamber in the furnace body, wherein the vacuum system (2) comprises a fixed support (21) and a vacuum pump (22), wherein the vacuum pump (22) is arranged on the fixed support (21), and the output end of the vacuum pump (22) is connected to the heating chamber through a pipeline, wherein: The invention also comprises a shock absorbing mechanism (3) and a noise reduction mechanism (4), wherein the shock absorbing mechanism (3) is arranged between the vacuum pump (22) and the fixed bracket (21), and the shock absorbing mechanism (3) is used to absorb and buffer the vibration generated when the vacuum pump (22) is working; the noise reduction mechanism (4) is arranged on the outside of the vacuum pump (22), and the noise reduction mechanism (4) is used to isolate the vacuum pump (22) from the outside.
2. A vacuum sintering furnace for processing NdFeB magnets according to claim 1, characterized in that: The shock absorbing mechanism (3) comprises a fixed base (31), a movable top plate (32) and an elastic member (33); the fixed base (31) is arranged on a fixed bracket (21); the movable top plate (32) is arranged on the top of the fixed base (31); the elastic member (33) is arranged between the fixed base (31) and the movable top plate (32); and the vacuum pump (22) is arranged on the movable top plate (32).
3. A vacuum sintering furnace for processing NdFeB magnets according to claim 2, characterized in that: The fixed base (31) is provided with a limiting slide groove (311) in a vertical state, the bottom of the movable top plate (32) is provided with a limiting slider (321) slidably matched with the limiting slide groove (311), the movable top plate (32) is slidably arranged on the fixed base (31) along the vertical direction, and the elastic member (33) is arranged between the limiting slide groove (311) and the limiting slider (321).
4. A vacuum sintering furnace for processing NdFeB magnets according to claim 3, characterized in that: The elastic member (33) is a spring, a first spring slot (312) is provided in the limiting slide groove (311), a second spring slot (322) is provided at one end of the limiting slide block (321) close to the limiting slide groove (311), one end of the spring is arranged in the first spring slot (312), and the other end of the spring is arranged in the second spring slot (322).
5. A vacuum sintering furnace for processing NdFeB magnets according to claim 2, characterized in that: The shock absorbing mechanism (3) further comprises a shock absorbing cushion (34), wherein the shock absorbing cushion (34) is arranged between the fixed base (31) and the fixed bracket (21), and the shock absorbing cushion (34) is made of rubber material.
6. A vacuum sintering furnace for processing NdFeB magnets according to claim 1, characterized in that: The noise reduction mechanism (4) comprises a soundproof cover (41), the soundproof cover (41) is arranged on a fixed bracket (21), and the vacuum pump (22) and the shock absorbing mechanism (3) are both located in the soundproof cover (41), and the soundproof cover (41) is made of sound insulation material.
7. A vacuum sintering furnace for processing NdFeB magnets according to claim 6, characterized in that: The side of the soundproof cover (41) is provided with an inspection opening (411), the inspection opening (411) is provided with an inspection door (42) fixedly connected to the soundproof cover (41) via a hinge, and a rubber strip is provided between the inspection opening (411) and the inspection door (42).
8. A vacuum sintering furnace for processing NdFeB magnets according to claim 7, characterized in that: The inspection door (42) is provided with an observation port (421), and the observation port (421) is provided with soundproof glass.