Automatic powder distribution device for neodymium iron boron bar production

Abstract

The invention relates to the field of neodymium iron boron processing, in particular to an automatic powder distribution device for neodymium iron boron bar production. Comprising a first foot stool, one side of the first foot stool is connected with a second foot stool, a feeding electric sliding rail is arranged at the top of the first foot stool, a vibration platform is installed on a moving part of the feeding electric sliding rail, a mounting plate is arranged at the top of the vibration platform, and a mounting cabin is fixedly connected to the bottom of the mounting plate; and the mounting cabin extends downwards and is positioned in a cavity in the vibration platform. A fixing mechanism for automatically fixing a mold, a feeding electric sliding rail for automatically conveying the mold, a pneumatic hopper for automatically discharging, a vibration platform for automatically vibrating and compacting and a scraping mechanism for automatically and quantitatively scraping are integrated, and are matched with a mechanical arm to realize automatic feeding and discharging of the mold, so that a complete automatic production unit is formed; manual intervention is reduced, the production takt is stable and controllable, and the production efficiency and the consistency of batch products can be improved.

Description

Technical Field

[0001] This invention relates to the field of neodymium iron boron processing, and more particularly to an automatic powder distribution device for the production of neodymium iron boron rods. Background Technology

[0002] In the production of neodymium iron boron (NdFeB) permanent magnet materials, filling NdFeB powder, i.e., distributing the powder into the mold, is a crucial step before pressing and molding. However, current powder distribution methods have many problems: they require manual labor to complete a series of steps including weighing, handling, pouring, and leveling the powder, which is cumbersome, slows the production cycle, and is difficult to adapt to the needs of large-scale, continuous production. Furthermore, manual weighing and pouring make it difficult to accurately control the weight and volume of powder in each mold, resulting in poor batch-to-batch consistency, which directly affects the uniformity of the size, density, and magnetic properties of the final rod product. NdFeB powder (especially...) The fine particles are easily dispersed during manual operation, causing raw material waste and polluting the operating environment. Neodymium iron boron powder is prone to component segregation or the introduction of impurities during transportation and filling. In particular, there is a lack of effective screening methods for "relatively large particles of powder that are not suitable for die casting." These large particles will affect the density uniformity of the pressed blank and the subsequent sintering quality. Existing equipment may only achieve single-point automated feeding and powder distribution devices, but the integration of mold positioning, powder vibration compaction, accurate scraping of residual material, and overall process coordination control is not high, and a lot of manual intervention and judgment are still required.

[0003] Therefore, it is necessary to develop an automatic powder distribution device for the production of NdFeB rods to solve the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of current methods for powder distribution in NdFeB production, such as cumbersome operation steps, low powder distribution accuracy, and difficulty in controlling the powder distribution effect, the purpose of this invention is to provide an automated powder distribution device for NdFeB rod production that has a high degree of automation, ensures powder distribution accuracy, and improves powder distribution effect.

[0005] Technical Solution: An automatic powder distribution device for NdFeB rod production includes a first leg, a second leg connected to one side of the first leg, a feed electric slide rail on the top of the first leg, a vibration platform mounted on the moving part of the feed electric slide rail, a mounting plate on the top of the vibration platform, and a mounting chamber fixedly connected to the bottom of the mounting plate. The mounting chamber extends downward and is located in a cavity inside the vibration platform. The vibration platform is used to output high-frequency, low-amplitude vibrations to the mounting plate. A limiting plate is provided on one side of the top of the mounting plate, and a fixing mechanism is provided on the other side. The fixing mechanism is used to hold the mold... The mold assembly is fixed to the mounting plate. From top to bottom, a pneumatic hopper and a surrounding mechanism are installed on the upper part of the second leg. The surrounding mechanism is aligned with the discharge port of the pneumatic hopper. When the mold assembly enters the inner cavity of the surrounding mechanism, the surrounding mechanism encloses the mold assembly. The surrounding mechanism is equipped with a scraping mechanism for quantitatively scraping and leveling the NdFeB powder inside the mold assembly. A propulsion mechanism is provided inside the mounting chamber. The propulsion mechanism is equipped with an adjustment mechanism. The propulsion mechanism and the adjustment mechanism jointly control the position of the mold assembly within the surrounding mechanism.

[0006] Preferably, the vibration platform includes a fixed plate, which is fixed to the moving part of the feed electric slide rail. A vibration plate is provided above the fixed plate, and guide rods are connected around the perimeter of the vibration plate. Each guide rod passes through the guide holes around the perimeter of the fixed plate. A vibration module is installed on the top of the fixed plate, and the output end of the vibration module is connected to the bottom surface of the vibration plate. The mounting plate is fixed to the top of the vibration plate.

[0007] Preferably, the fixing mechanism includes a fixing cylinder, which is mounted on the mounting plate. A pressure sensor is installed on the telescopic end of the fixing cylinder, and a push plate is fixedly connected to the force-receiving end of the pressure sensor.

[0008] Preferably, the enclosure mechanism includes a connecting frame connected to the second leg, a movable pair fixedly connected to the connecting frame, a movable part of the movable pair connected to its fixed part by an elastic element, the movable part of the movable pair connected to the enclosure frame by a displacement frame, a feed pipe provided at the top of the enclosure frame, the feed pipe being located directly below the discharge port of the pneumatic hopper, an external air pipe connected to the side wall of the feed pipe for connecting to an external air pump module, a discharge pipe connected to one end of the enclosure frame near the second leg, and a scraping mechanism located on the upper side of the enclosure frame.

[0009] Preferably, the scraping mechanism includes a scraping cylinder installed along the length of the enclosure frame, and a scraping plate is connected to the telescopic end of the scraping cylinder, the scraping plate being disposed in the inner cavity of the enclosure frame.

[0010] Preferably, the propulsion mechanism includes a propulsion electric slide rail, which is installed in the mounting compartment. The movable part of the propulsion electric slide rail is connected to a propulsion frame via a support rod. The adjustment mechanism is disposed on the propulsion frame, and first electromagnets are detachably installed on both sides of the propulsion frame.

[0011] Preferably, the adjustment mechanism includes an adjusting electric slide rail, which is mounted on the push frame, and a second electromagnet is connected to the moving part of the adjusting electric slide rail.

[0012] Preferably, it further includes a protective padding layer, which covers the outer side of the vibrating plate.

[0013] The beneficial effects are as follows: 1. This invention integrates a fixing mechanism for automatically fixing the mold, an electric feed slide rail for automatically conveying the mold, a pneumatic hopper for automatically unloading, a vibrating platform for automatically vibrating and compacting, and a scraping mechanism for automatically quantitatively leveling the material. Together with a robotic arm, it realizes the automatic loading and unloading of the mold, forming a complete automated production unit. This reduces manual intervention, ensures stable and controllable production cycle, and improves production efficiency and batch product consistency.

[0014] 2. This invention uses pneumatic hopper feeding control for coarse quantitative control, i.e., overfilling feeding. Then, by using the combined action of the propulsion mechanism and the adjustment mechanism, the final height position of the bottom mold is precisely controlled. Combined with the precise scraping of excess material by the scraper, the final volume, i.e., weight, of the powder within the mold is precisely controlled. Furthermore, by controlling and adjusting the electric slide rail, the two height positions of "overloading" and "final loading" can be flexibly set according to different product specifications and powder compression ratios, giving the device good process adaptability and flexible production capabilities.

[0015] 3. This invention uses high-frequency, low-amplitude vibration of a vibration platform to make the powder distribution within the mold more uniform and dense, reducing gaps between particles and providing a more ideal pre-pressed blank for subsequent isostatic pressing, which is beneficial to improving the density uniformity of the final product. In addition, by utilizing the characteristic that large particles will float after vibration, a scraping mechanism is used to scrape off the large particles of powder that are not suitable for die casting as surplus material. This innovative design realizes online quality control in the production process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the overall structure of the present invention viewed from a first-person perspective.

[0017] Figure 2 This is a three-dimensional structural diagram of the overall structure of the present invention viewed from a second perspective.

[0018] Figure 3 This is a three-dimensional structural diagram of the overall structure of the present invention viewed from a third-person perspective.

[0019] Figure 4 This is a schematic diagram of the structure of the vibration platform, mounting plate, limiting plate and fixing mechanism in this invention.

[0020] Figure 5 This is a schematic diagram of the vibration platform in this invention.

[0021] Figure 6 This is a schematic diagram of the fixing mechanism in this invention.

[0022] Figure 7 This is a schematic diagram of the structure of the pneumatic hopper, the surrounding mechanism, and the scraping mechanism in this invention.

[0023] Figure 8 This is a schematic diagram of the overall structure of the mold integration in this invention.

[0024] Figure 9 This is a partial structural diagram of the mold integration in this invention.

[0025] Figure 10 This is a schematic diagram of the overall structure of the surrounding mechanism in this invention.

[0026] Figure 11 This is a partial structural diagram of the surrounding mechanism in this invention.

[0027] Figure 12 This is a schematic diagram of the structure of the enclosure frame and the discharge pipe in this invention.

[0028] Figure 13 This is a cross-sectional view of the enclosure frame and discharge pipe in this invention.

[0029] Figure 14 This is a schematic diagram of the scraping mechanism in this invention.

[0030] Figure 15 This is a cross-sectional view of the surrounding mechanism and the scraping mechanism in this invention.

[0031] Figure 16 This is a schematic diagram of the integrated installation compartment and mold structure in this invention.

[0032] Figure 17 This is a schematic diagram of the propulsion mechanism and the adjustment mechanism in this invention.

[0033] The components in the attached diagram are labeled as follows: 1. First leg; 2. Second leg; 3. Feed electric slide rail; 4. Vibration platform; 5. Mounting plate; 6. Limiting plate; 7. Mounting chamber; 8. Pneumatic hopper; 9. Mold integration; 10. Fixing mechanism; 11. Enclosing mechanism; 12. Scraping mechanism; 13. Propulsion mechanism; 14. Adjustment mechanism; 41. Fixing plate; 42. Vibration plate; 43. Guide rod; 44. Vibration module; 91. Placement sleeve; 92. Long mold; 93. Short mold; 94. Bottom mold; 101. Fixing cylinder; 10 2. Pressure sensor; 103. Push plate; 111. Connecting frame; 112. Sliding pair; 113. Elastic element; 114. Displacement frame; 115. Enclosure frame; 116. Feed pipe; 1161. External air pipe; 117. Discharge pipe; 1171. Stop part; 121. Enclosure sleeve; 122. Scraper cylinder; 123. Scraper plate; 131. Electric propulsion slide rail; 132. Support rod; 133. Propulsion frame; 134. First electromagnet; 141. Adjusting electric slide rail; 142. Second electromagnet; 15. Protective pad. Detailed Implementation

[0034] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0035] Example 1, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 16As shown, an automatic powder distribution device for producing NdFeB rods includes a first leg 1, a second leg 2, a feed electric slide rail 3, a vibration platform 4, a mounting plate 5, a limiting plate 6, a mounting chamber 7, a pneumatic hopper 8, a fixing mechanism 10, a surrounding mechanism 11, a scraping mechanism 12, a pushing mechanism 13, and an adjusting mechanism 14. The second leg 2 is fixedly connected to the left side of the first leg 1. The first leg 1 is a horizontal bed-type leg, and the second leg 2 is a vertical table-type leg, which is higher than the first leg 1. The feed electric slide rail 3 is mounted on the upper side of the first leg 1. The feed electric slide rail 3 is a servo-controlled electric slide rail that is horizontally positioned in the left-right direction. The vibration platform 4 is mounted on the moving part of the feed electric slide rail 3. The vibration platform 4 is provided with a mounting plate 5. The vibration platform 4 is used to output high-frequency, low-amplitude vibration to the mounting plate 5. A rectangular hole is provided in the middle of the mounting plate 5, and two limiting plates 6 are installed at the upper front position of the mounting plate 5. The mounting chamber 7 is fixedly connected to the lower side of the mounting plate 5. The mounting chamber 7 extends downward and is located inside the vibration platform 4. The mounting chamber 7 has an open structure on the upper side, and the open structure on the upper side of the mounting chamber 7 corresponds to the position of the rectangular hole in the mounting plate 5. A pneumatic hopper 8 is installed at the upper right position of the second leg 2. The pneumatic hopper 8 is an automatic feeding module driven by compressed air. The pneumatic hopper 8 is connected to an external NdFeB powder source. The mounting plate 5 is used to place the mold integration 9. The mold integration 9 includes two sets of placement sleeves 91 connected by metal straps, two sets of opposing long molds 92, two sets of opposing short molds 93, one upper mold and one bottom mold 94. The mold integration 9 is held and transported by a robotic arm and placed on the mounting plate 5.A fixing mechanism 10 is located at the upper rear side of the mounting plate 5. The fixing mechanism 10 is used to fix the mold assembly 9 to the mounting plate 5 through cooperation with the limiting plate 6. By controlling the operation of the feed electric slide rail 3, the vibration platform 4 drives the mounting plate 5 and the mold assembly 9 placed on it to move left and right. A surrounding mechanism 11 is located at the upper right side of the second leg 2. The surrounding mechanism 11 is aligned with the discharge port of the pneumatic hopper 8. When the mold assembly 9 enters the inner cavity of the surrounding mechanism 11, the surrounding mechanism 11 surrounds the mold assembly 9, so that the pneumatic hopper 8 can accurately feed the mold assembly 9 and prevent powder from scattering. A scraping mechanism 12 is located at the surrounding mechanism 11. The scraping mechanism 12 is used to quantitatively measure the NdFeB powder in the mold assembly 9 to ensure the production process of multiple batches of NdFeB rods. The powder quantity within the mold integration 9 is consistent, and relatively large powder particles that are unsuitable for die casting and float on the upper layer of the mold integration 9 after vibration are scraped off. Compared with the current method of distributing NdFeB powder in the bar mold, the cooperation of the surrounding mechanism 11 and the scraping mechanism 12 can accurately feed the powder into the mold integration 9 with high precision, thus improving the automation of powder distribution. The installation chamber 7 is equipped with a pushing mechanism 13, and the pushing mechanism 13 is equipped with an adjusting mechanism 14. The pushing mechanism 13 and the adjusting mechanism 14 jointly control the position of the mold integration 9 within the surrounding mechanism 11, so as to cooperate with the scraping mechanism 12 to quantitatively distribute the NdFeB powder in the mold integration 9, further ensuring the quality of the NdFeB powder entering the mold integration 9, and also making the required amount of NdFeB powder in the mold integration 9 adjustable.

[0036] like Figures 4-5 As shown, the vibration platform 4 includes a fixed plate 41, a vibration plate 42, guide rods 43, and a vibration module 44. The fixed plate 41 is fixedly connected to the upper side of the moving part of the feed electric slide rail 3. The fixed plate 41 is a horizontal frame structure with guide holes around its perimeter. The vibration plate 42 is mounted on the upper side of the fixed plate 41. The vibration plate 42 is also a horizontal frame structure with the same dimensions as the fixed plate 41. Guide rods 43 are fixedly connected to the lower perimeter of the vibration plate 42, and the guide rods 43 extend into the guide holes around the fixed plate 41. The vibration module 44 is installed on the front and rear sides of the upper side of the fixed plate 41. The output end of the vibration module 44 is installed on the bottom surface of the vibration plate 42. The mounting plate 5 is detachably installed on the upper side of the vibration plate 42. The vibration module 44 can generate high-frequency, low-amplitude vertical vibration, so that the vibration plate 42 can vibrate up and down on the upper side of the fixed plate 41 under the action of the vibration module 44 through the guide rod 43, thereby driving the mold assembly 9 placed on the mounting plate 5 to vibrate, so that the NdFeB powder in the mold assembly 9 vibrates accordingly, making the NdFeB powder in the mold assembly 9 uniform and forming a flat layout, avoiding gaps between NdFeB powder particles that would affect subsequent die casting and isostatic pressing.

[0037] like Figure 6 As shown, the fixing mechanism 10 includes a fixing cylinder 101, a pressure sensor 102, and a push plate 103. The fixing cylinder 101 is installed at the upper rear position of the mounting plate 5. The fixing cylinder 101 is horizontally arranged, and its extension end faces the direction of the limiting plate 6. The pressure sensor 102 is installed at the extension end of the fixing cylinder 101. The force-receiving end of the pressure sensor 102 faces forward, and the force-receiving end of the pressure sensor 102 is fixedly connected to the push plate 103.

[0038] like Figures 10-13 As shown, the enclosing mechanism 11 includes a connecting frame 111, a sliding pair 112, an elastic element 113, a displacement frame 114, an enclosing frame 115, a feed pipe 116, an external air pipe 1161, and a discharge pipe 117. The connecting frame 111 is fixedly connected to the upper right side of the second leg 2. The connecting frame 111 is a bifurcated support structure facing the right. Sliding pairs 112 are fixedly connected to the front and rear positions of the bifurcated support structure of the connecting frame 111. The sliding pairs 112 are all vertically oriented guide pairs. Elastic elements 113 are fixedly connected to the upper and lower sides of the moving parts of the sliding pairs 112. The elastic elements 113 are all straight springs. The other end of the elastic element 113 is connected to the adjacent end of the fixed part of the sliding pair 112. A displacement frame 114 is fixedly connected between the moving parts of the sliding pair 112. A surrounding frame 115 is fixedly connected to the lower side of the displacement frame 114. The surrounding frame 115 is a frame structure with open lower, right and left sides. The lower right corner of the surrounding frame 115 has a rounded chamfer structure. When the mold assembly 9 moves to the left, its left edge first contacts the rounded chamfer structure at the lower right corner of the surrounding frame 115 and pushes the surrounding frame 115 to lift slightly upward, so that the surrounding frame 115 has a downward force under the action of the elastic element 113. The compression trend allows the enclosure frame 115 to fit tightly against the mold integration 9. Displacement holes are provided on the upper sides of both the front and rear sides of the enclosure frame 115. A feeding hole is provided at the top of the enclosure frame 115, and a feeding pipe 116 is fixedly connected to this feeding hole. The feeding pipe 116 cooperates with the discharge port of the pneumatic hopper 8. After the discharge port of the pneumatic hopper 8 is activated, the discharge port will feed material into the feeding pipe 116. An external air pipe 1161 is fixedly connected to the rear side wall of the feeding pipe 116. The external air pipe 1161 is used to connect to an external air pump module. Activating the external air pump module allows the pneumatic hopper 8 to... During material feeding, the external air pipe 1161 can extract and remove the floating matter generated by the ultrafine particles contained in the neodymium iron boron powder being fed, which can not only prevent the powder from scattering; a discharge pipe 117 is fixedly connected to the open structure on the left side of the enclosure frame 115, and a stop part 1171 is provided at the right end of the discharge pipe 117. The stop part 1171 extends into the enclosure frame 115. Both the discharge pipe 117 and the stop part 1171 are inclined to the lower left side. The lower left side of the discharge pipe 117 is used to connect to the external powder collection bin; the scraping mechanism 12 is located on the upper side of the front and rear sides of the enclosure frame 115.

[0039] like Figures 14-15 As shown, the scraping mechanism 12 includes a surrounding sleeve 121, a scraping cylinder 122, and a scraping plate 123. Surround sleeves 121 are fixedly connected to the upper sides of both the front and rear sides of the surrounding frame 115. The opposing sides of the surrounding sleeves 121 are open structures, and these open structures communicate with the displacement holes of adjacent surrounding frames 115. The lower walls of the displacement holes of the surrounding frames 115 are all inclined structures to prevent dust accumulation inside the surrounding frame 115. The surrounding frame 115 is equipped with [missing information - likely related to equipment or components]. There is a scraper cylinder 122, which is a horizontal structure in the left and right direction. The telescopic parts of the scraper cylinder 122 are located inside the corresponding enclosure frame 115. The right end of the telescopic parts of the scraper cylinder 122 is fixedly connected to a scraper plate 123. The scraper plate 123 spans the inside of the enclosure frame 115. The front and rear sides of the scraper plate 123 slide against the front and rear inner walls of the enclosure frame 115. The lower side of the scraper plate 123 is on the same horizontal plane as the upper side of the stop part 1171.

[0040] like Figures 16-17 As shown, the propulsion mechanism 13 includes a propulsion electric slide rail 131, a support rod 132, a propulsion frame 133, and a first electromagnet 134. The propulsion electric slide rail 131 is fixedly connected to both the left and right side walls of the installation compartment 7. The propulsion electric slide rail 131 is a vertically mounted electric track pair controlled by a servo system. The moving parts of the propulsion electric slide rail 131 are fixedly connected to the support rod 132. The upper ends of the support rod 132 are fixedly connected to the propulsion frame 133. The middle part of the propulsion frame 133 has a structure with a round hole. The adjustment mechanism 14 is located at the propulsion frame 133. The upper part of the propulsion frame 133 has a structure with protrusions on both the left and right sides. The first electromagnet 134 can be detachably installed at the protrusions on both the left and right sides of the propulsion frame 133. Magnetic plates are provided at the bottom of the two short molds 93 and the bottom of the bottom mold 94. The first electromagnet 134 is located directly below the magnetic plates on the left and right sets of short molds 93.

[0041] like Figures 16-17 As shown, the adjustment mechanism 14 includes an adjustment electric slide rail 141 and a second electromagnet 142. The adjustment electric slide rail 141 is installed on the lower side of the push frame 133. The adjustment electric slide rail 141 is a vertically arranged electric slide rail controlled by a servo system. The moving part of the adjustment electric slide rail 141 faces upward and passes through the circular hole structure of the push frame 133. The upper end of the moving part of the adjustment electric slide rail 141 is fixedly connected to the second electromagnet 142. The second electromagnet 142 and the first electromagnet 134 are on the same horizontal plane. The second electromagnet 142 is located directly below the magnetic absorbing sheet on the bottom mold 94.

[0042] like Figure 1As shown, it also includes a protective pad 15. The upper side of the vibration plate 42 is covered with a protective pad 15. The protective pad 15 covers the vibration platform 4 below the mounting plate 5. The protective pad 15 is used to protect the vibration platform 4 and the components installed at its location.

[0043] Example 2, as Figures 1-17As shown, the powder distribution process of the automatic powder distribution device for NdFeB rod production is as follows: ① A mechanical arm clamps an empty mold assembly 9 without an upper mold, then transports it and accurately places it on the mounting plate 5, in the predetermined area between the push plate 103 and the limiting plate 6. The operation of the fixing cylinder 101 is controlled, causing the fixing cylinder 101 to drive the pressure sensor 102 and the push plate 103 to move forward. The push plate 103 fixes the mold assembly 9 by cooperating with the limiting plate 6. The pressure sensor 102 will detect the clamping force in real time to avoid excessive pressure from the fixing cylinder 101 and damage to the mold assembly 9. The clamping force on the mold assembly 9 is also controlled by the value of the pressure sensor 102. ② Start the propulsion mechanism 13 and the adjustment mechanism 14 to make the first electromagnet 134 and the second electromagnet 142 run. The first electromagnet 134 will magnetically attract the magnetic plates at the bottom of the short molds 93 on both sides, and the second electromagnet 142 will magnetically attract the magnetic plates at the bottom of the bottom mold 94. Then control the propulsion electric slide rail 131 to run, so that the propulsion electric slide rail 131 drives the adjustment mechanism 14 and the first electromagnet 134 to move upward until the upper surface of the short mold 93 is flush with the upper surface of the inner stop part 1171 of the enclosure frame 115. Then control the adjustment electric slide rail 141 to run for the first time, so that the adjustment electric slide rail 141 drives the second electromagnet 142 to move upward, so that the bottom mold 94 moves upward to the overloaded state, that is, so that the area above the bottom mold 94 can be loaded with more NdFeB powder than the required amount of die-casting rod material. ③ Simultaneously with the above "②" process, start the feed electric slide rail 3, so that its moving parts drive the vibration platform 4 and the mounting plate 5 and the mold assembly 9 placed on it to move to the left until the left short mold 93 of the mold assembly 9 is in contact with the right side of the stop part 1171. At this time, the mold assembly 9 is surrounded by the surrounding frame 115 and the mold assembly 9 is located below the feed pipe 116. ④ Start the pneumatic hopper 8 to open the outlet of the pneumatic hopper 8 for feeding. The pneumatic hopper 8 will release neodymium iron boron powder into the feed pipe 116 until the set amount is reached. Then the pneumatic hopper 8 can be closed. While the feed pipe 116 is receiving material, the external air pump module can be turned on. When the pneumatic hopper 8 is feeding material, the external air pipe 1161 can suck out the floating matter generated by the ultrafine particles contained in the neodymium iron boron powder. The neodymium iron boron powder passing through the feed pipe 116 will fall directly into the mold integration 9. After the feeding is completed, the external air pump module can be turned off. ⑤ Turn on the vibration module 44 so that the vibration module 44 outputs vibration to the mounting plate 5 and the mold integration 9 placed on it, so that the neodymium iron boron powder in the mold integration 9 is vibrated evenly and flat. During the vibration leveling process, since the neodymium iron boron powder is mainly composed of micron-sized fine particles, dynamic voids and local convection are generated inside the powder when it is subjected to external vibration excitation.Smaller, qualified powder particles can migrate downwards through these instantaneous gaps and fill the space below the larger particles; while larger, unqualified particles, due to their larger geometric size, have difficulty entering the gaps between the fine powder particles, and are instead continuously lifted upwards, causing the coarse impurity particles to float naturally and separate from the lower layer of qualified powder. This facilitates the subsequent scraping mechanism to simultaneously remove excess powder and inferior coarse NdFeB powder particles. ⑥ According to the process described in "②", the electric slide rail 141 is controlled and adjusted for a second operation, causing the bottom mold 94 to move upwards to the height of the required amount of NdFeB powder for the die-casting rod. At this time, the height of the bottom mold 94 to the lower plane of the scraper plate 123 is the height of the required amount of NdFeB powder for the die-casting rod, while excess powder and inferior coarse NdFeB powder particles are located above the lower plane of the scraper plate 123. ⑦ Then the scraper cylinder 122 can be started, which will drive the scraper plate 123 to move to the left, so that the scraper plate 123 scrapes off and pushes out the excess NdFeB powder to the left until the scraper plate 123 moves to the left and is located above the stop part 1171, so that the excess NdFeB powder is discharged from the discharge pipe 117. The NdFeB powder remaining in the mold integration 9 has achieved the purpose of vibration leveling, vibration screening, scraping off the excess material and precise metering. Moreover, there is no powder scattering in this process and no direct manual intervention is required. ⑧ Afterwards, the propulsion mechanism 13 and the adjustment mechanism 14 can be controlled to move the bottom mold 94 and the short mold 93 downwards to reset, and disconnect the magnetic attraction of the first electromagnet 134 and the second electromagnet 142. At the same time, the feed electric slide rail 3 can be controlled to move the vibration platform 4, the mounting plate 5 and the mold assembly 9 loaded with powder on it to the right to reset, and then the scraping mechanism 12 can be controlled to reset. Subsequently, the fixing mechanism 10 can be controlled to reset, so that the fixing mechanism 10 no longer fixes the mold assembly 9. ⑨ At this point, the upper mold of the mold assembly 9 can be grasped by the robotic arm to seal the mold assembly 9, and the entire mold assembly 9 can be taken out by the robotic arm and transported to the next processing stage. Then, an empty mold assembly 9 can be processed in the same way as in the above "①-⑧" process, and the operation can be repeated. ⑩ As in the above "①-⑨" process, the robotic arm's gripping path, the running position of the feed electric slide rail 3, the vibration parameters output by the vibration platform 4, the amount of powder released by the pneumatic hopper 8, the clamping force of the fixing mechanism 10, the structure of the surrounding frame 115 of the surrounding mechanism 11, etc., can be preset and adjusted according to factors such as the different specifications of the mold assembly 9, the different amount of powder required for die casting rods, and the different batches of material processing. In particular, the pushing amount of the pushing mechanism 13 and the first and second running positions of the adjusting mechanism 14 can be adjusted.

[0044] The powder distribution process of the automatic powder distribution device for NdFeB rod production described above is a significant improvement over existing methods that require frequent manual operation to weigh NdFeB powder within the standard range and then manually level the powder in the rod mold. This invention, through the automatic powder distribution device for NdFeB rod production, saves labor, increases automation, effectively ensures the amount of powder required for die-casting NdFeB rods, and controls the quality of the powder entering the mold, thus guaranteeing the die-casting effect.

[0045] It should be understood that the above description is for illustrative purposes only and is not intended to limit the invention. Those skilled in the art will understand that variations of the invention are included within the scope of the claims herein.

Claims

1. An automatic powder distribution device for the production of NdFeB rods, comprising a first leg (1), wherein a second leg (2) is connected to one side of the first leg (1), characterized in that: The first leg (1) is provided with a feed electric slide rail (3) at the top. A vibration platform (4) is installed on the moving part of the feed electric slide rail (3). A mounting plate (5) is provided on the top of the vibration platform (4). A mounting chamber (7) is fixedly connected to the bottom of the mounting plate (5). The mounting chamber (7) extends downward and is located in the cavity inside the vibration platform (4). The vibration platform (4) is used to output high-frequency low-amplitude vibration to the mounting plate (5). A limiting plate (6) is provided on one side of the top of the mounting plate (5), and a fixing mechanism (10) is provided on the other side. The fixing mechanism (10) is used to fix the mold assembly (9) on the mounting plate (5). The second leg (2) is installed from top to bottom in sequence. There is a pneumatic hopper (8) and an enclosing mechanism (11). The enclosing mechanism (11) is aligned with the outlet of the pneumatic hopper (8). When the mold assembly (9) enters the inner cavity of the enclosing mechanism (11), the enclosing mechanism (11) encloses the mold assembly (9). The enclosing mechanism (11) is provided with a scraping mechanism (12) for quantitatively scraping the neodymium iron boron powder in the mold assembly (9). The installation chamber (7) is provided with a pushing mechanism (13). The pushing mechanism (13) is provided with an adjusting mechanism (14). The pushing mechanism (13) and the adjusting mechanism (14) jointly control the position of the mold assembly (9) in the enclosing mechanism (11).

2. The automatic powder distribution device for NdFeB rod production according to claim 1, characterized in that: The vibration platform (4) includes a fixed plate (41), which is fixed to the moving part of the feed electric slide rail (3). A vibration plate (42) is provided above the fixed plate (41). Guide rods (43) are connected around the vibration plate (42). Each guide rod (43) passes through the guide holes around the fixed plate (41). A vibration module (44) is installed on the top of the fixed plate (41). The output end of the vibration module (44) is connected to the bottom surface of the vibration plate (42). The mounting plate (5) is fixed to the top of the vibration plate (42).

3. The automatic powder dispensing device for producing NdFeB rods according to claim 1, characterized in that: The fixing mechanism (10) includes a fixing cylinder (101), which is mounted on the mounting plate (5). A pressure sensor (102) is installed on the telescopic end of the fixing cylinder (101), and a push plate (103) is fixedly connected to the force-bearing end of the pressure sensor (102).

4. The automatic powder dispensing device for producing NdFeB rods according to claim 1, characterized in that: The enclosure mechanism (11) includes a connecting frame (111) connected to the second leg (2). A movable pair (112) is fixedly connected to the connecting frame (111). The movable part of the movable pair (112) is connected to its fixed part through an elastic element (113). The movable part of the movable pair (112) is connected to the enclosure frame (115) through a displacement frame (114). The top of the enclosure frame (115) is provided with a feed pipe (116). The feed pipe (116) is located directly below the outlet of the pneumatic hopper (8). An external air pipe (1161) is connected to the side wall of the feed pipe (116). The external air pipe (1161) is used to connect to an external air pump module. A discharge pipe (117) is connected to one end of the enclosure frame (115) near the second leg (2). The scraping mechanism (12) is located on the upper side of the enclosure frame (115).

5. The automatic powder dispensing device for producing NdFeB rods according to claim 4, characterized in that: The scraping mechanism (12) includes a scraping cylinder (122) installed along the length of the enclosure frame (115). The telescopic end of the scraping cylinder (122) is connected to a scraping plate (123), which is located in the inner cavity of the enclosure frame (115).

6. The automatic powder distribution device for producing NdFeB rods according to claim 1, characterized in that: The propulsion mechanism (13) includes a propulsion electric slide rail (131), which is installed in the mounting compartment (7). The moving part of the propulsion electric slide rail (131) is connected to the propulsion frame (133) via a support rod (132). The adjustment mechanism (14) is set on the propulsion frame (133). The first electromagnet (134) is detachably installed on both sides of the propulsion frame (133).

7. The automatic powder dispensing device for producing NdFeB rods according to claim 6, characterized in that: The adjustment mechanism (14) includes an adjustment electric slide rail (141), which is mounted on the push frame (133). A second electromagnet (142) is connected to the moving part of the adjustment electric slide rail (141).

8. The automatic powder distribution device for producing NdFeB rods according to claim 2, characterized in that: It also includes a protective pad (15), which covers the outside of the vibrating plate (42).

Images