Blanking and weighing mechanism for neodymium iron boron powder
An automated system combining infrared monitoring and a PLC controller enables precise positioning and closed-loop weighing of NdFeB powder, solving the problems of low efficiency and large errors in existing technologies, improving weighing accuracy and environmental cleanliness, and extending the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山西荣升磁业有限公司
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-24
AI Technical Summary
The existing technology for feeding and weighing NdFeB powder is inefficient, prone to human error, lacks automated positioning and feedback, and cannot meet the precision, efficiency and environmental control requirements of modern production.
The system uses an infrared transmitter and receiver to monitor the position of the storage tank in real time. Combined with a PLC controller to automatically start and stop the motor and belt conveyor, and with the help of weighing sensors, hydraulic rods and pressure sensors, it can achieve automatic and accurate positioning and closed-loop weighing of powder containers. The system also uses a solenoid valve to control the closed feeding environment to prevent dust.
It significantly reduces human error, improves weighing accuracy and efficiency, ensures precise positioning, suppresses dust, extends equipment life, and meets the needs of modern production.
Smart Images
Figure CN224552514U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of neodymium iron boron processing technology, specifically to a feeding and weighing mechanism for neodymium iron boron powder. Background Technology
[0002] As a high-performance permanent magnet material, the precise metering of neodymium iron boron (NdFeB) powder is one of the key steps in the production of high-performance magnets. NdFeB powder is typically produced by alloy smelting followed by processes such as hydrogen crushing and air jet milling. It is characterized by its fine particle size, large specific surface area, susceptibility to dust generation, and significantly affected flowability by humidity. Before the molding process, a specific ratio and weight of NdFeB powder needs to be precisely and efficiently conveyed and weighed into the subsequent molding die or container.
[0003] Currently, the common practice for feeding and weighing NdFeB powder is to use manual transfer or semi-automated equipment. However, existing technologies have significant shortcomings: manual operation is inefficient and prone to human error. More importantly, it lacks automatic detection and feedback of the powder container's positioning status, making it impossible to achieve truly closed-loop automated control and failing to meet the stringent requirements of modern production for precision, efficiency, and environmental control. Therefore, we propose a feeding and weighing mechanism for NdFeB powder. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a feeding and weighing mechanism for neodymium iron boron powder, which can realize automatic and accurate positioning of the powder container and closed-loop weighing and real-time monitoring of the equipment status, and can effectively solve the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a feeding and weighing mechanism for neodymium iron boron powder, comprising a mounting frame and an adjustment assembly; Mounting frames: There are two mounting frames. A belt conveyor is installed inside the mounting frame. A storage tank is placed above the belt conveyor on the left side. A support frame is fixed to the lower side of the mounting frame. A base plate is fixed to the lower side of the two support frames. A feeding assembly is installed on the upper side of the two mounting frames. A weighing assembly is installed between the two support frames. A support assembly is installed below the weighing assembly. The input end of the belt conveyor is electrically connected to the output end of an external PLC controller. Adjustment Components: Includes a guide frame, rotating shafts, conveyor belt, motor, infrared transmitters, and infrared receivers. A guide frame is positioned between two mounting frames. Three corresponding rotating shafts are rotatably connected within the guide frame, and these shafts are connected via the conveyor belt. A motor is mounted on the front side of the guide frame, with its output shaft fixed to the front end of the right-side rotating shaft. Four corresponding mounting slots are provided on the front and rear sides of the guide frame. Two corresponding infrared transmitters are installed in the two front mounting slots, and two corresponding infrared receivers are installed in the two rear mounting slots. The infrared transmitters and receivers correspond to each other. The input terminals of the infrared transmitters and the motor are electrically connected to the output terminals of an external PLC controller. The infrared receivers are bidirectionally electrically connected to the external PLC controller. The adjustment components move the storage bin, and the infrared transmitters and receivers facilitate determining the storage bin's position.
[0006] Furthermore, the weighing assembly includes a connecting plate, a weighing sensor, and a placement plate. The connecting plate is fixed between the two support frames and is located below the guide frame. A groove is provided on the upper side of the connecting plate, and a weighing sensor is installed inside the groove. The placement plate is fixed on the upper side of the weighing sensor. The weighing sensor is bidirectionally electrically connected to an external PLC controller. The weighing assembly is used to weigh the material inside the storage tank on the guide frame.
[0007] Furthermore, the support assembly includes a hydraulic rod, a support frame, and a first pressure sensor. A hydraulic rod is mounted on the lower side of the connecting plate, and a support frame is fixed to the telescopic arm of the hydraulic rod. Two corresponding support slots are formed on the lower side of the guide frame, and the left and right ends of the upper side of the support frame are located inside the two support slots. Two corresponding connecting slots are formed on the left and right ends of the upper side of the connecting plate, and the connecting slots correspond to the support slots. A first pressure sensor is installed inside each connecting slot. The first pressure sensor is bidirectionally electrically connected to an external PLC controller. The input end of the hydraulic rod is electrically connected to the output end of the external PLC controller. The connecting plate is supported by this support assembly.
[0008] Furthermore, it also includes a sensing component, which includes a limiting block and a second pressure sensor. Four corresponding limiting blocks are fixed between the two mounting frames. Four corresponding support slots are opened at the left and right ends of the upper side of the guide frame. The second pressure sensor is installed inside the support slot. The limiting block is located inside the support slot and is in contact with its corresponding second pressure sensor. The second pressure sensor is bidirectionally electrically connected to an external PLC controller. The position of the guide frame can be easily determined by setting the sensing component.
[0009] Furthermore, the feeding assembly includes a connecting frame, a storage bin, a sealing cap, a discharge pipe, and a solenoid valve. The connecting frame is fixed to the upper side of the two mounting frames. The connecting frame has a fixing hole on its upper side. The storage bin is fixed inside the fixing hole. The upper end of the storage bin is threaded with a sealing cap. The discharge port at the lower end of the storage bin has a discharge pipe fixed inside. A solenoid valve is installed on the circumference of the discharge pipe. The input end of the solenoid valve is electrically connected to the output end of an external PLC controller. The feeding assembly is used to feed NdFeB powder.
[0010] Furthermore, three corresponding guide rods are fixed on the upper side of the connecting plate, and three corresponding guide grooves are opened on the lower side of the guide frame. The guide grooves and guide rods correspond to each other. By setting the guide rods and guide grooves, the stability of the connecting plate movement can be improved.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This feeding and weighing mechanism for NdFeB powder has the following advantages: 1. By adjusting the infrared transmitter and infrared receiver in the component, the position status of the storage barrel is monitored in real time. Combined with the PLC controller to automatically start and stop the motor and belt conveyor, the storage barrel is accurately positioned during the conveying process. The weighing sensor of the weighing component works in conjunction with the hydraulic rod and the first pressure sensor of the support component to automatically raise and lower the guide frame and trigger the weighing during material feeding. No manual intervention is required throughout the process, which significantly reduces human operation error and improves weighing accuracy and efficiency. 2. The sensing component provides real-time feedback on the reset status of the guide frame through the limit block and the second pressure sensor, ensuring accurate positioning during the lifting process; the cooperative design of the guide rod and guide groove enhances the movement stability of the connecting plate; the sealing cover and solenoid valve of the feeding component control the opening and closing of the discharge pipe, forming a closed feeding environment, effectively suppressing dust during powder conveying, ensuring the cleanliness of the production environment, and at the same time, the dual positioning mechanism of the mechanical structure prevents the equipment from deviating during operation and extends its service life. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the adjustment component structure of this utility model; Figure 3 This is a schematic diagram of the weighing component structure of this utility model; Figure 4 This is a sectional view of the left side of this utility model.
[0013] In the diagram: 1. Mounting frame; 2. Adjustment assembly; 21. Guide frame; 22. Rotary shaft; 23. Conveyor belt; 24. Motor; 25. Infrared transmitter; 26. Infrared receiver; 3. Weighing assembly; 31. Connecting plate; 32. Weighing sensor; 33. Placement plate; 4. Support assembly; 41. Hydraulic rod; 42. Support frame; 43. First pressure sensor; 5. Sensing assembly; 51. Limit block; 52. Second pressure sensor; 6. Discharge assembly; 61. Connecting frame; 62. Storage bin; 63. Sealing cover; 64. Discharge pipe; 65. Solenoid valve; 7. Belt conveyor; 8. Storage bin; 9. Support frame; 10. Base plate; 11. Guide groove; 12. Guide rod. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-4 This embodiment provides a technical solution: a feeding and weighing mechanism for neodymium iron boron powder, including a mounting frame 1 and an adjustment component 2; Mounting Frame 1: Two frames are provided. A belt conveyor 7 is installed inside the mounting frame 1. A storage tank 8 is placed above the belt conveyor 7 on the left side. A support frame 9 is fixed to the lower side of the mounting frame 1. A base plate 10 is fixed to the lower side of both support frames 9. A feeding assembly 6 is installed on the upper side of both mounting frames 1. A weighing assembly 3 is installed between the two support frames 9. A support assembly 4 is installed below the weighing assembly 3. The input end of the belt conveyor 7 is electrically connected to the output end of an external PLC controller. The weighing assembly 3 includes a connecting plate 31, a weighing sensor 32, and a placement plate 33. The connecting plate 31 is fixed between the two support frames 9 and is located below the guide frame 21. A groove is formed on the upper side of the connecting plate 31. A weighing sensor 32 is installed inside the groove. A placement plate 33 is fixed to the upper side of the weighing sensor 32. The weighing sensor 32 is bidirectionally electrically connected to an external PLC controller. The support assembly 4 includes a hydraulic rod 41, a support frame 42, and a first pressure sensor 43. The hydraulic rod 41 is installed on the lower side of the connecting plate 31. The support frame 42 is fixed to the telescopic arm of the hydraulic rod 41. Two corresponding support slots are opened on the lower side of the guide frame 21. The left and right ends of the upper side of the support frame 42 are located inside the two support slots. Two corresponding connecting slots are opened on the left and right ends of the upper side of the connecting plate 31. The connecting slots correspond to the support slots. The first pressure sensor 43 is installed inside the connecting slot. The system is bidirectionally electrically connected to an external PLC controller. The input end of the hydraulic rod 41 is electrically connected to the output end of the external PLC controller. It also includes a sensing component 5, which comprises a limit block 51 and a second pressure sensor 52. Four corresponding limit blocks 51 are fixed between the two mounting frames 1. Four corresponding support slots are provided at the left and right ends of the upper side of the guide frame 21. The second pressure sensor 52 is installed inside the support slot. The limit block 51 is located inside the support slot and fits against its corresponding second pressure sensor 52. The second pressure sensor 52 is bidirectionally electrically connected to the external PLC controller. The unloading component 6 includes a connecting frame 61, a storage bin 62, a sealing cover 63, a discharge pipe 64, and an electric... A solenoid valve 65 is provided. A connecting frame 61 is fixed on the upper side of the two mounting frames 1. A fixing hole is provided on the upper side of the connecting frame 61. A storage tank 62 is fixed inside the fixing hole. A sealing cap 63 is threaded to the upper end of the storage tank 62. A discharge pipe 64 is fixed inside the discharge port provided at the lower end of the storage tank 62. A solenoid valve 65 is installed on the circumference of the discharge pipe 64. The input end of the solenoid valve 65 is electrically connected to the output end of an external PLC controller. The neodymium iron boron powder is fed by the feeding component 6. The position of the guide frame 21 is easily determined by the sensing component 5. The connecting plate 31 is supported by the support component 4. The material inside the storage tank 8 on the guide frame 21 is weighed by the weighing component 3. Adjustment component 2 includes a guide frame 21, a rotating shaft 22, a conveyor belt 23, a motor 24, an infrared transmitter 25, and an infrared receiver 26. A guide frame 21 is positioned between the two mounting frames 1. Three corresponding rotating shafts 22 are rotatably connected inside the guide frame 21, and these three shafts are connected via the conveyor belt 23. A motor 24 is mounted on the front side of the guide frame 21, and the output shaft of the motor 24 is fixed to the front end of the rotating shaft 22 on the right side. Four corresponding mounting slots are provided on the front and rear sides of the guide frame 21. Two corresponding infrared transmitters 25 are installed inside the two front mounting slots, and two corresponding infrared receivers 26 are installed inside the two rear mounting slots. The infrared transmitters 25 and infrared receivers 26 correspond to each other. The input terminals of the infrared transmitters 25 and the motor 24 are electrically connected to the output terminals of an external PLC controller. The infrared receivers 26 are bidirectionally electrically connected to the external PLC controller. The adjustment component 2 moves the storage tank 8, and the infrared transmitters 25 and infrared receivers 26 facilitate the determination of the storage tank 8's position.
[0016] Among them, three corresponding guide rods 12 are fixed on the upper side of the connecting plate 31, and three corresponding guide grooves 11 are opened on the lower side of the guide frame 21. The guide grooves 11 and the guide rods 12 correspond to each other. By setting the guide rods 21 and the guide grooves 11, the stability of the movement of the connecting plate 31 can be improved.
[0017] The working principle of the feeding and weighing mechanism for NdFeB powder provided by this utility model is as follows: At the start of operation, the storage tank 8 is placed on the belt conveyor 7 of the left mounting frame 1. The external PLC controller starts the left belt conveyor 7, which transports the storage tank 8 to the conveyor belt 23 inside the guide frame 21. Then, the motor 24 drives the right rotating shaft 22 to rotate the conveyor belt 23, causing the storage tank 8 to move along the guide frame 21. During the movement of the storage tank 8, when the storage tank 8 blocks the two infrared emitters 25, the two infrared receivers 26 will be unable to receive the signals from the two infrared emitters 25. When the signal is received, the external PLC controller will control the motor 24 to shut down. After the motor 24 shuts down, the storage tank 8 will be completely above the conveyor belt 23 and correspond to the discharge pipe 64. Subsequently, the hydraulic rod 41 of the support assembly 4 will be activated, pushing the support frame 42 down into the lower support groove of the guide frame 21. During the descent of the support frame 42, the guide frame 21 will also be driven downward. When the support frame 42 contacts the two first pressure sensors 43 in the two connecting grooves on the upper side of the connecting plate 31, the pressure of the two first pressure sensors 43 will change. After the change occurs, the external PLC controller will automatically control the hydraulic rod 41 to stop working. At this time, the guide frame 21 will automatically be placed on the placement plate 33. Then, the external PLC controller will automatically control the solenoid valve 65 to open. After the solenoid valve 65 is opened, the NdFeB powder inside the storage tank 62 will enter the storage tank 8 along the discharge pipe 64. During the feeding process, the weighing sensor 32 will accurately measure the weight of the NdFeB powder in the storage tank 8. The data is processed and recorded in real time by the external PLC controller. After the weighing is completed, the external PLC controller will control the hydraulic rod 41 to retract, causing the support frame 4 to... 2. The guide frame 21 is driven upward. During the upward movement of the guide frame 21, when the four second pressure sensors 52 on its upper side come into contact with the four limit blocks 51, the pressure of the four second pressure sensors 52 will change. After the pressure of the four second pressure sensors 52 changes, the external PLC controller will automatically control the hydraulic rod 41 to stop working. At this time, the guide frame 21 is reset. Then, the external PLC controller will automatically control the motor 24 to work again and drive the conveyor belt 23 to move, which can transport the storage bucket 8 to the top of the belt conveyor 7 on the right. Then, the belt conveyor 7 on the right can be started to unload the material.
[0018] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The motor 24, hydraulic rod 41, solenoid valve 65, belt conveyor 7, infrared transmitter 25, infrared receiver 26, first pressure sensor 43 and second pressure sensor 52 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of the motor 24, hydraulic rod 41, solenoid valve 65, belt conveyor 7 and infrared transmitter 25 using methods commonly used in the prior art.
[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A feeding and weighing mechanism for NdFeB powder, characterized in that: Includes mounting frame (1) and adjustment components (2); Mounting Frame (1): There are two. A belt conveyor (7) is installed inside the mounting frame (1). A storage tank (8) is placed above the belt conveyor (7) on the left side. A support frame (9) is fixed on the lower side of the mounting frame (1). A base plate (10) is fixed on the lower side of the two support frames (9). A feeding assembly (6) is installed on the upper side of the two mounting frames (1). A weighing assembly (3) is installed between the two support frames (9). A support assembly (4) is installed on the lower side of the weighing assembly (3). The input end of the belt conveyor (7) is electrically connected to the output end of an external PLC controller. Adjustment component (2): includes a guide frame (21), a rotating shaft (22), a conveyor belt (23), a motor (24), an infrared transmitter (25), and an infrared receiver (26). The guide frame (21) is provided between the two mounting frames (1). The guide frame (21) is rotatably connected to three corresponding rotating shafts (22). The three rotating shafts (22) are connected by the conveyor belt (23). The motor (24) is installed on the front side of the guide frame (21). The output shaft of the motor (24) is fixed to the front end of the rotating shaft (22) on the right side. The guide frame (21) has four corresponding mounting slots on its front and rear sides. Two corresponding infrared transmitters (25) are installed in the two mounting slots on the front side, and two corresponding infrared receivers (26) are installed in the two mounting slots on the rear side. The infrared transmitters (25) and infrared receivers (26) correspond to each other. The input terminals of the infrared transmitters (25) and the motor (24) are electrically connected to the output terminal of the external PLC controller. The infrared receivers (26) are bidirectionally electrically connected to the external PLC controller.
2. The feeding and weighing mechanism for NdFeB powder according to claim 1, characterized in that: The weighing assembly (3) includes a connecting plate (31), a weighing sensor (32), and a placement plate (33). The connecting plate (31) is fixed between two support frames (9). The connecting plate (31) is located below the guide frame (21). A groove is provided on the upper side of the connecting plate (31). The weighing sensor (32) is installed inside the groove. The placement plate (33) is fixed on the upper side of the weighing sensor (32). The weighing sensor (32) is bidirectionally electrically connected to an external PLC controller.
3. The feeding and weighing mechanism for NdFeB powder according to claim 2, characterized in that: The support assembly (4) includes a hydraulic rod (41), a support frame (42), and a first pressure sensor (43). The hydraulic rod (41) is installed on the lower side of the connecting plate (31). The support frame (42) is fixed on the telescopic arm of the hydraulic rod (41). Two corresponding support slots are opened on the lower side of the guide frame (21). The left and right ends of the upper side of the support frame (42) are located inside the two support slots. Two corresponding connection slots are opened on the left and right ends of the upper side of the connecting plate (31). The connection slots correspond to the support slots. The first pressure sensor (43) is installed inside the connection slot. The first pressure sensor (43) is bidirectionally electrically connected to an external PLC controller. The input end of the hydraulic rod (41) is electrically connected to the output end of the external PLC controller.
4. The feeding and weighing mechanism for NdFeB powder according to claim 1, characterized in that: It also includes a sensing component (5), which includes a limiting block (51) and a second pressure sensor (52). Four corresponding limiting blocks (51) are fixed between the two mounting frames (1). Four corresponding support slots are provided on the left and right ends of the upper side of the guide frame (21). The second pressure sensor (52) is installed inside the support slot. The limiting block (51) is located inside the support slot. The limiting block (51) is in contact with its corresponding second pressure sensor (52). The second pressure sensor (52) is bidirectionally electrically connected to an external PLC controller.
5. The feeding and weighing mechanism for NdFeB powder according to claim 1, characterized in that: The feeding assembly (6) includes a connecting frame (61), a storage bin (62), a sealing cap (63), a discharge pipe (64), and a solenoid valve (65). The connecting frame (61) is fixed on the upper side of the two mounting frames (1). The connecting frame (61) has a fixing hole on its upper side. The storage bin (62) is fixed inside the fixing hole. The sealing cap (63) is threaded to the upper end of the storage bin (62). The discharge port at the lower end of the storage bin (62) is fixed inside the discharge pipe (64). The solenoid valve (65) is installed on the circumferential surface of the discharge pipe (64). The input end of the solenoid valve (65) is electrically connected to the output end of an external PLC controller.
6. The feeding and weighing mechanism for NdFeB powder according to claim 2, characterized in that: The upper side of the connecting plate (31) is fixed with three corresponding guide rods (12), and the lower side of the guide frame (21) is provided with three corresponding guide grooves (11), the guide grooves (11) and the guide rods (12) correspond to each other.