Neodymium-iron-boron powder weighing and discharging device

By designing a NdFeB powder weighing and cutting device, using transmission tracks, barrels, cutting mechanisms, weighing mechanisms and control systems, the problems of low weighing efficiency and easy to make mistakes in manual operation in the prior art are solved, and efficient, accurate and automated powder processing is achieved.

CN222808340UActive Publication Date: 2025-04-29NINGBO NAILIYU MAGNETISM IND TECH CO LTD
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Patent Information

Application Number
CN202420921649.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-29
Publication Date
2025-04-29
Estimated Expiration
2034-04-29

AI Technical Summary

Technical Problem

The existing NdFeB powder weighing technology has low production efficiency, manual operation is prone to errors and omissions, time-consuming and labor-intensive and inefficient.

Method used

A neodymium iron boron powder weighing and cutting device is designed, including a transmission track, a barrel, a cutting mechanism, a weighing mechanism and a control system. The powder is filled with the feeding mechanism, and the weighing mechanism is accurately weighed. The control system automatically controls the feeding process to achieve quantitative filling.

Benefits of technology

It realizes efficient, accurate and automated processing of neodymium iron boron powder, improves production efficiency, reduces manual operation errors, and ensures the accuracy of quantitative filling.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a neodymium iron boron powder weighing and blanking device which comprises a transmission track, a charging barrel for conveying powder is arranged on the transmission track, and a blanking mechanism, a weighing mechanism and a control system are arranged on the transmission track. The discharging mechanism is used for filling the charging barrel with material powder; the weighing mechanism is used for weighing powder in the charging barrel; the control system is electrically connected with the discharging mechanism and the weighing mechanism. When the charging barrels on the conveying track are conveyed to the weighing mechanism, the discharging mechanism fills the charging barrels with powder, meanwhile, the control system controls the discharging mechanism to quantitatively fill the charging barrels with the powder according to the weighing numerical value of the weighing mechanism, and the charging barrels filled with the quantitative powder are conveyed to the next procedure through the conveying track. Through the cooperative design of the discharging mechanism, the weighing mechanism and the control system, neodymium-iron-boron powder can be accurately weighed and quantitatively filled, and efficient, accurate and automatic treatment of the neodymium-iron-boron powder is achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of NdFeB processing equipment, in particular to a NdFeB powder weighing and feeding device. Background Art

[0002] NdFeB is a magnet that is different from the magnets we usually see. It has strong magnetic properties, so it is called the "king of magnets". NdFeB magnetic materials are alloys of neodymium, iron oxide, etc., with extremely high magnetic energy product and intrinsic coercive force, as well as the advantages of high energy density, which makes NdFeB permanent magnet materials widely used in modern industry and electronic technology. The application of NdFeB permanent magnet materials has made electroacoustic motors, instruments and meters, magnetization equipment, etc. miniaturized, lightweight, and thin.

[0003] At present, in the production and processing of NdFeB, it is necessary to manually take out a certain amount of NdFeB and put it into the mold for pressing and sintering. Therefore, the taken out NdFeB powder needs to be weighed. The existing weighing technology has low production efficiency, and manual operation is prone to errors and omissions, which is not only time-consuming and labor-intensive, but also inefficient. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a NdFeB powder weighing and unloading device, which can accurately weigh and quantitatively fill NdFeB powder through the coordinated design of the unloading mechanism, the weighing mechanism and the control system, thereby solving the problems of low production efficiency of the existing weighing technology, prone to errors and omissions in manual operation, which is not only time-consuming and labor-intensive, but also inefficient.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a neodymium iron boron powder weighing and unloading device, including a transmission track, a barrel for conveying powder traveling on the transmission track, a unloading mechanism, a weighing mechanism and a control system are arranged on the transmission track; the unloading mechanism is used to fill the powder into the barrel; the weighing mechanism is used to weigh the powder in the barrel; the control system is electrically connected to the unloading mechanism and the weighing mechanism; when the barrel on the transmission track is conveyed to the weighing mechanism, the unloading mechanism fills the powder into the barrel, and at the same time, the control system controls the unloading mechanism to quantitatively fill the powder into the barrel according to the weighing value of the weighing mechanism, and the barrel filled with quantitative powder is conveyed to the next process through the transmission track.

[0006] Preferably, the weighing mechanism comprises a weighing platform installed on the transmission track, and a weighing track is arranged on the top of the weighing platform.

[0007] Preferably, the weighing platform comprises a mounting frame arranged on the transmission track, an electronic scale is arranged on the mounting frame, a fixing plate is arranged on the electronic scale, and the weighing track is mounted on the fixing plate.

[0008] Preferably, the weighing platform also includes a fixing mechanism installed on the weighing track.

[0009] Preferably, the fixing mechanism comprises second cylinders relatively arranged on both sides of the weighing track, and a second blocking block is fixedly mounted on the output end of the second cylinder.

[0010] Preferably, the unloading mechanism includes a storage bin arranged above the transmission track, and a valve is arranged at the bottom of the storage bin.

[0011] Preferably, first cylinders are arranged opposite to each other on both sides of the transmission track, and a first blocking block is fixedly installed on the output end of the first cylinder.

[0012] Preferably, a first infrared sensor and a second infrared sensor are respectively disposed on one side of the first cylinder and the second cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model proposes a NdFeB powder weighing and unloading device, which can accurately weigh and quantitatively fill NdFeB powder through the coordinated design of the unloading mechanism, the weighing mechanism and the control system, thereby realizing efficient, accurate and automated processing of NdFeB powder, and providing strong support for the development of related industries.

[0014] 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

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a NdFeB powder weighing and feeding device Figure 1 .

[0016] Figure 2 A schematic diagram of the three-dimensional structure of a NdFeB powder weighing and feeding device Figure 2 .

[0017] Figure 3 A schematic diagram of the three-dimensional structure of a NdFeB powder weighing and feeding device Figure 3 .

[0018] Figure 4 The figure is a side view of the three-dimensional structure of a NdFeB powder weighing and feeding device.

[0019] Figure 5 It is a three-dimensional structural cross-sectional view of a NdFeB powder weighing and feeding device.

[0020] In the figure: 1. transmission track; 2. barrel; 3. unloading mechanism; 31. storage bin; 32. valve; 4. weighing mechanism; 41. weighing platform; 411. mounting frame; 412. electronic balance; 413. fixing plate; 42. weighing track; 43. fixing mechanism; 431. second cylinder; 432. second blocking block; 433. second infrared sensor; 5. control system; 6. first cylinder; 61. first blocking block; 7. first infrared sensor. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Combination Figure 1 , Figure 2 and Figure 3As shown, a weighing and unloading device for NdFeB powder includes a transmission track 1, a barrel 2 for conveying powder is moved on the transmission track 1, and a unloading mechanism 3, a weighing mechanism 4 and a control system 5 are arranged on the transmission track 1; the unloading mechanism 3 is used to fill the powder into the barrel 2; the weighing mechanism 4 is used to weigh the powder in the barrel 2; the control system 5 is electrically connected to the unloading mechanism 3 and the weighing mechanism 4; when the barrel 2 on the transmission track 1 is conveyed to the weighing mechanism 4, the unloading mechanism 3 fills the powder into the barrel 2, and at the same time, the control system 5 controls the unloading mechanism 3 to quantitatively fill the powder into the barrel 2 according to the weighing value of the weighing mechanism 4, and the barrel 2 filled with quantitative powder is conveyed to the next process through the transmission track 1. Specifically, the design of this NdFeB powder weighing and unloading device is very practical and efficient. First of all, the transmission track 1 plays a key role, which is responsible for conveying the barrel 2 according to the set path and direction. The barrel 2 is the main container for carrying and transporting NdFeB powder. At a certain position of the transmission track 1, a feeding mechanism 3 is set. When the barrel 2 moves to this position, the feeding mechanism 3 starts to work and fills the NdFeB powder into the barrel 2. This filling process can be adjusted as needed to ensure that the amount of powder in the barrel 2 reaches the preset standard. Then, the barrel 2 continues to move along the transmission track 1 and comes to the position of the weighing mechanism 4. The main task of the weighing mechanism 4 is to accurately measure the weight of the NdFeB powder in the barrel 2. This link is crucial because it is directly related to the amount of powder used in the subsequent process. The weighing mechanism 4 transmits the measured weight value to the control system 5. The control system 5 is the brain of the entire device. It is responsible for receiving, processing and analyzing information from various parts and making decisions based on it. After receiving the data from the weighing mechanism 4, the control system 5 will determine whether the amount of powder in the barrel 2 meets the preset standard. If the amount of powder is insufficient, the control system 5 will issue an instruction to allow the feeding mechanism 3 to continue to fill the powder into the barrel 2 until the preset standard is reached. If the amount of powder is sufficient, the control system 5 will control the transmission track 1 to continue to transport the barrel 2 to the next process. Through this design, the device can achieve accurate weighing and quantitative filling of NdFeB powder, thereby ensuring the stability and reliability of subsequent processes. At the same time, due to the use of an automated control system 5, the efficiency and accuracy of the entire process have also been greatly improved. In general, this NdFeB powder weighing and unloading device achieves efficient, accurate and automated processing of NdFeB powder by comprehensively using technical means such as the transmission track 1, barrel 2, unloading mechanism 3, weighing mechanism 4 and control system 5, providing strong support for the development of related industries.

[0023] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the weighing mechanism 4 includes a weighing platform 41 installed on the transmission track 1, and a weighing track 42 is arranged on the top of the weighing platform 41. Specifically, after adding the description of the weighing platform 41 and the weighing track 42, we can have a deeper understanding of the structure and working principle of the weighing mechanism 4. The weighing platform 41 is the core component of the weighing mechanism 4. It is installed on the transmission track 1 and is designed to support and stabilize the barrel 2. When the barrel 2 is transmitted to the weighing position, it will be placed on the weighing platform 41 to ensure the accuracy and stability of the weighing process. The weighing platform 41 usually has a sturdy and durable structure that can withstand the weight of the barrel 2 and the NdFeB powder and provide stable support. At the top of the weighing platform 41, a weighing track 42 is arranged. The weighing track 42 is connected to the transmission track 1 to ensure that the barrel 2 can be smoothly transferred from the transmission track 1 to the weighing track 42. The design of the weighing track 42 should take into account the compatibility with the barrel 2 to ensure that the barrel 2 will not shake or tilt during the weighing process, thereby ensuring the accuracy of the weighing. During the weighing process, the barrel 2 is placed on the weighing track 42 and connected to a sensor (such as a pressure sensor or an electronic scale) inside the weighing mechanism 4. The sensor can monitor and record the weight of the barrel 2 and the powder therein in real time, and transmit the data to the control system 5. The control system 5 analyzes and judges based on the received data, and then controls whether the unloading mechanism 3 continues to add powder to the barrel 2 until the preset quantitative standard is reached. This design enables the weighing mechanism 4 to complete the weighing task accurately and quickly, and work in conjunction with other components (such as the transmission track 1, the unloading mechanism 3 and the control system 5) to achieve automation and efficiency of the entire unloading and weighing process. At the same time, due to the sturdy and durable design of the weighing platform 41 and the weighing track 42, the stability and reliability of the device during long-term use are also ensured. In summary, the weighing platform 41 and the weighing track 42, as important components of the weighing mechanism 4, together realize the accurate weighing of the NdFeB powder, and provide key support for the normal operation of the entire feeding device.

[0024] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the weighing platform 41 includes a mounting frame 411 arranged on the transmission track 1, an electronic balance 412 is arranged on the mounting frame 411, a fixing plate 413 is arranged on the electronic balance 412, and the weighing track 42 is mounted on the fixing plate 413. Specifically, in the detailed design of the weighing platform 41, various components work together to achieve accurate weighing functions. The mounting frame 411 is the basic structure of the weighing platform 41, which is firmly mounted on the transmission track 1. The design of the mounting frame 411 takes into account stability and load-bearing capacity to ensure that the entire weighing platform 41 and the barrel 2 thereon can be stably supported. It may be made of steel or other high-strength materials to adapt to long-term, high-load working conditions. The electronic balance 412 is the core component of the weighing platform 41, which is mounted on the mounting frame 411. The electronic balance 412 uses a high-precision sensor to measure the weight of the object placed on it, and has the characteristics of fast response, high precision and easy reading. It can monitor the weight of the barrel 2 and the powder inside it in real time, and transmit the data to the control system 5 to achieve automatic control and adjustment. The fixed plate 413 is located above the electronic balance 412, which provides a stable surface for installing the weighing track 42. The design of the fixed plate 413 ensures a close connection with the electronic balance 412, so that the weight of the barrel 2 can be accurately transferred to the electronic balance 412 for measurement. At the same time, the fixed plate 413 also has a certain rigidity and stability to prevent deformation or shaking during the weighing process. The weighing track 42 is installed on the fixed plate 413 and docked with the transmission track 1 to ensure that the barrel 2 can be smoothly transferred from the transmission track 1 to the weighing track 42. The design of the weighing track 42 takes into account the adaptability and stability with the barrel 2 to ensure the stability and accuracy of the barrel 2 during the weighing process. In summary, through the coordinated work of the mounting frame 411, the electronic balance 412, the fixing plate 413 and the weighing track 42, the weighing platform 41 can achieve accurate weighing of the NdFeB powder in the barrel 2. This design not only improves the accuracy and reliability of weighing, but also provides strong support for the automation and efficiency of the entire unloading and weighing process.

[0025] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the weighing platform 41 also includes a fixing mechanism 43 installed on the weighing track 42. Specifically, the fixing mechanism 43 in the weighing platform 41 is an important component, which is installed on the weighing track 42 to ensure the stability and accuracy of the barrel 2 during the weighing process. The main function of the fixing mechanism 43 is to prevent the barrel 2 from moving or shaking during the weighing process. When the barrel 2 is transferred to the weighing position and placed on the weighing track 42, the fixing mechanism 43 will quickly and accurately fix the barrel 2 to ensure that it is stable and motionless. This fixing effect is achieved through a series of mechanical or pneumatic devices, which can be adjusted according to the shape and size of the barrel 2 to adapt to different barrels 2. The design of the fixing mechanism 43 also takes into account the convenience and efficiency of operation. It can automatically perform fixing and releasing operations under the control of the control system 5 without manual intervention. This not only improves production efficiency, but also reduces the labor intensity of operators. In addition, the fixing mechanism 43 also has certain durability and reliability. It is made of high-strength material and can withstand the weight of the barrel 2 and powder, as well as long-term workload. At the same time, it has also been rigorously tested and inspected to ensure that it can maintain stable performance in various working environments. In summary, the fixing mechanism 43 plays a vital role in the weighing platform 41. It fixes the barrel 2 to ensure the stability and accuracy of the weighing process, providing strong support for the automation and efficiency of the entire unloading and weighing device.

[0026] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the fixing mechanism 43 includes a second cylinder 431 relatively arranged on both sides of the weighing track 42, and a second stopper 432 is fixedly installed at the output end of the second cylinder 431. Specifically, the detailed design of the fixing mechanism 43 further reflects its important role in ensuring the stability and accuracy of the weighing process. The mechanism mainly includes a second cylinder 431 relatively arranged on both sides of the weighing track 42, and a second stopper 432 fixedly installed at the output end of the second cylinder 431. The second cylinder 431 works as an actuator under the control of the control system 5. When the barrel 2 is transferred to the weighing position and accurately placed on the weighing track 42, the control system 5 will issue an instruction to drive the second cylinder 431 to act. The output end of the second cylinder 431 will extend, driving the second stopper 432 to move toward the center line of the weighing track 42 until the second stopper 432 on both sides is in close contact with the side wall of the barrel 2. The design of the second stopper 432 takes into account the adaptability and stability with the barrel 2. They are made of wear-resistant and non-slip materials, and can firmly hold the barrel 2 to prevent it from sliding or shaking during the weighing process. At the same time, the shape and size of the second stopper 432 are also carefully designed to ensure that they can fit tightly against the side wall of the barrel 2 without leaving any gaps. Through this design, the fixing mechanism 43 can effectively fix the barrel 2 so that it remains stable during the weighing process. This not only improves the accuracy of weighing, but also avoids equipment damage or safety accidents caused by the shaking of the barrel 2. In addition, due to the rapid response and precise control of the second cylinder 431 and the second stopper 432, the entire fixing process is efficient and reliable, further improving production efficiency. In summary, the fixing mechanism 43 achieves stable fixation of the barrel 2 through the coordinated work of the second cylinder 431 and the second stopper 432, providing a strong guarantee for the smooth progress of the weighing process.

[0027] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the unloading mechanism 3 includes a storage bin 31 arranged above the transmission track 1, and a valve 32 is arranged at the bottom of the storage bin 31. Specifically, the design of the unloading mechanism 3 ensures that the NdFeB powder can be accurately and efficiently filled into the barrel 2. The storage bin 31 is arranged above the transmission track 1, and its main function is to store NdFeB powder. The storage bin 31 usually has a large capacity and can accommodate enough powder to meet the needs of continuous unloading. At the same time, the design of the storage bin 31 also takes into account the sealing and moisture resistance to prevent the powder from being damp or contaminated. The shape and structure of the storage bin 31 can be customized according to actual needs to ensure the smooth flow and uniform distribution of the powder. In addition, in order to facilitate the observation and monitoring of the powder storage, the storage bin 31 may also be equipped with auxiliary equipment such as observation windows or sensors. The valve 32 is located at the bottom of the storage bin 31 and is a key component for controlling the unloading of powder. When the barrel 2 is transferred to the designated position and is ready to be filled with powder, the valve 32 will open, allowing the powder to flow out of the storage bin 31 and fall into the barrel 2. The opening and closing of the valve 32 can be precisely controlled by the control system 5. The control system 5 can determine whether the amount of powder in the barrel 2 reaches the preset standard based on the weighing data of the weighing mechanism 4, and control the opening time and opening degree of the valve 32 accordingly. This design ensures that the amount of powder discharged can be precisely controlled, avoiding the problem of waste and overfilling. In summary, the discharge mechanism 3 realizes the storage, control and discharge functions of NdFeB powder through the coordinated work of the storage bin 31 and the valve 32. This design not only ensures the accuracy of discharge, but also improves the efficiency and automation level of the entire production process.

[0028] Combination Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the first cylinder 6 is relatively arranged on both sides of the transmission track 1, and the output end of the first cylinder 6 is fixedly installed with a first stopper 61. Specifically, in the NdFeB powder weighing and unloading device, the first cylinder 6 is relatively arranged on both sides of the transmission track 1. This design is intended to achieve precise control and positioning of the barrel 2 during the transmission process. The first cylinder 6 works as an actuator under the command of the control system 5, and the first stopper 61 is fixedly installed at its output end. When the barrel 2 moves on the transmission track 1, the control system 5 will issue corresponding instructions according to its position and state. Once the barrel 2 reaches the position where it needs to be paused or positioned, the control system 5 will drive the first cylinder 6 to act. The output end of the first cylinder 6 extends out, pushing the first stopper 61 to move toward the center line of the transmission track 1 until it contacts the side wall of the barrel 2 and applies a certain pressure. In this way, the first stopper 61 can effectively prevent the barrel 2 from continuing to move and achieve precise positioning thereof. The design of the first stopper 61 fully considers the contact area and friction with the barrel 2 to ensure that the barrel 2 will not be damaged or its stability will not be affected during the positioning process. At the same time, the extension speed and strength of the first cylinder 6 can also be accurately adjusted by the control system 5 to adapt to barrels 2 of different sizes and weights. Through this design, the barrel 2 on the transmission track 1 can be accurately positioned at the specified position when needed, which facilitates the subsequent unloading and weighing operations. This not only improves production efficiency, but also reduces the difficulty of operation and error rate, providing strong support for the automation and intelligent operation of the entire device.

[0029] Combination Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the first cylinder 6 and the second cylinder 431 are provided with a first infrared sensor 7 and a second infrared sensor 433 on one side, respectively. Specifically, in the device, the first cylinder 6 and the second cylinder 431 are provided with a first infrared sensor 7 and a second infrared sensor 433 on one side, respectively. The provision of these two sensors further improves the automation and accuracy of the entire system. First, the first infrared sensor 7 is located on one side of the first cylinder 6, and is mainly used to monitor whether the barrel 2 reaches the predetermined transmission position. When the barrel 2 moves on the transmission track 1 and approaches the predetermined position, the first infrared sensor 7 detects its presence and sends a signal to the control system 5. After receiving the signal, the control system 5 will command the first cylinder 6 to take action, such as extending or retracting, to achieve accurate positioning or fixing of the barrel 2. Secondly, the second infrared sensor 433 is provided on one side of the second cylinder 431, and its main function is to monitor the position state of the barrel 2 on the weighing platform 41. During the weighing process, in order to ensure the accuracy of the weighing, it is necessary to ensure that the barrel 2 is in a stable state. The second infrared sensor 433 can detect in real time whether the barrel 2 has been completely placed on the weighing platform and determine whether it is stable. Once the barrel 2 reaches a stable state, the second infrared sensor 433 will send a signal to the control system 5, and the control system 5 will then drive the second cylinder 431 to move, and fix the barrel 2 through the second blocking block 432 to prevent it from moving during the weighing process. The setting of these two infrared sensors not only improves the automation level of the entire system and reduces the need for manual intervention, but also ensures the accuracy and stability of the weighing process through real-time monitoring and precise control. In addition, they also provide important location information for subsequent data analysis and optimization, which helps to further improve production efficiency and product quality. In summary, the setting of the first infrared sensor 7 and the second infrared sensor 433 plays a key role in the entire system, providing strong support for the accurate positioning, fixing and weighing of the barrel 2.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A weighing and feeding device for NdFeB powder, comprising a transmission track (1), on which a barrel (2) for conveying powder travels, characterized in that: A material unloading mechanism (3), a weighing mechanism (4) and a control system (5) are arranged on the transmission track (1); The material discharge mechanism (3) is used to fill the material powder into the material barrel (2); The weighing mechanism (4) is used to weigh the powder in the barrel (2); The control system (5) is electrically connected to the unloading mechanism (3) and the weighing mechanism (4); When the barrel (2) on the transmission track (1) is transported to the weighing mechanism (4), the unloading mechanism (3) fills the powder into the barrel (2), and at the same time, the control system (5) controls the unloading mechanism (3) to quantitatively fill the powder into the barrel (2) according to the weighing value of the weighing mechanism (4), and the barrel (2) filled with the quantitative powder is transported to the next process via the transmission track (1).

2. A NdFeB powder weighing and feeding device according to claim 1, characterized in that: The weighing mechanism (4) comprises a weighing platform (41) installed on the transmission track (1), and a weighing track (42) is arranged on the top of the weighing platform (41).

3. A NdFeB powder weighing and feeding device according to claim 2, characterized in that: The weighing platform (41) comprises a mounting frame (411) arranged on the transmission track (1), an electronic scale (412) is arranged on the mounting frame (411), a fixing plate (413) is arranged on the electronic scale (412), and the weighing track (42) is mounted on the fixing plate (413).

4. A NdFeB powder weighing and feeding device according to claim 3, characterized in that: The weighing platform (41) also includes a fixing mechanism (43) installed on the weighing track (42).

5. A NdFeB powder weighing and feeding device according to claim 4, characterized in that: The fixing mechanism (43) comprises a second cylinder (431) arranged relatively on two sides of the weighing track (42), and a second blocking block (432) is fixedly mounted on the output end of the second cylinder (431).

6. A NdFeB powder weighing and feeding device according to claim 5, characterized in that: The material unloading mechanism (3) comprises a material storage bin (31) arranged above the transmission track (1), and a valve (32) is arranged at the bottom of the material storage bin (31).

7. A NdFeB powder weighing and feeding device according to claim 6, characterized in that: First cylinders (6) are arranged opposite to each other on both sides of the transmission track (1), and a first blocking block (61) is fixedly mounted on the output end of the first cylinder (6).

8. A NdFeB powder weighing and feeding device according to claim 7, characterized in that: A first infrared sensor (7) and a second infrared sensor (433) are respectively arranged on one side of the first cylinder (6) and the second cylinder (431).