A rare earth permanent magnet material neodymium iron boron forming and pressing device

Abstract

The present invention relates to the field of NdFeB processing technology, and in particular to a NdFeB forming and pressing device for rare earth permanent magnet material. A vertical frame is arranged on an extension table, and a fixed weighing device and a sliding contact frame are installed on the vertical frame. The contact frame contacts and cooperates with the detection end of the weighing device. The contact frame is equipped with a circulation frame connected to the feeding part. The bottom of the circulation frame is connected to a silicone sleeve with a valve, and the circulation frame is equipped with a pusher connected to the end of the silicone sleeve. A set of efficient and automated production structures is constructed through integration to achieve continuous operation of the entire process of NdFeB magnetic powder from feeding, weighing, filling to pressing. The structure adopts an inclined design to alleviate the fluidity problem caused by the agglomeration of magnetic powder, so that the process is integrated and the material transfer loss problem caused by the sub-links is reduced to ensure the consistency and efficiency of the production process. In addition, the use of adjustable drive components such as various dual-axis cylinders and electric slides enables each link of the equipment to be quickly connected, effectively improving the adaptability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of neodymium iron boron processing, in particular to a rare earth permanent magnet material neodymium iron boron forming and pressing device. Background Art

[0002] Neodymium iron boron (NdFeB) is a third-generation rare earth permanent magnet material. The "pressing molding" step in its production process is crucial to ensuring the density uniformity and magnetic direction consistency of the final product. The current common operation methods are divided into two types: manual and machine. Horizontal molds are usually used for pressing and demolding. However, in practical applications, the combined use of these methods still faces certain limitations.

[0003] First, manual powder filling often results in errors due to manual operation, leading to uneven powder filling, which in turn causes significant density differences and stratification in the pressed magnetic blanks. Furthermore, NdFeB magnetic powder particles are fine and easily agglomerated, which can easily cause powder clogging when directly blanked manually. This leads to inconsistent compaction within the mold, requiring additional manual intervention, such as tapping the mold for adjustments, which affects the stability of product quality.

[0004] Secondly, automated machines can further improve product quality issues, but due to the separation of feeding, pressing and demolding links, the connection between each step is not smooth enough, and the material is prone to deviation during the transfer process, affecting the consistency of the final product.

[0005] Therefore, in view of the above problems, it is necessary to design a rare earth permanent magnet material NdFeB forming and pressing device with continuous operation capability, process integration and strong adaptability to overcome the limitations of the existing technology, thereby providing a more stable and efficient production process and producing higher quality NdFeB magnets. Summary of the Invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a rare earth permanent magnet material neodymium iron boron forming and pressing device with continuous operation capability, process integration and strong adaptability.

[0007] The technical implementation scheme of the present invention is: a rare earth permanent magnet material neodymium iron boron forming and pressing device, comprising:

[0008] A machine base, with an extension platform provided on the top of the machine base;

[0009] The bracket is arranged on the machine base, and a guide frame for placing the forming mold is arranged obliquely on the bracket. The end of the guide frame is connected to the extension platform, and the extension platform is equipped with a double-axis cylinder with a telescopic end capable of extending into the guide frame;

[0010] A feeding part is arranged on the machine base;

[0011] A vertical frame is set on the extension platform, and a fixed weighing device and a sliding contact frame are installed on the vertical frame. The contact frame contacts and cooperates with the detection end of the weighing device. The contact frame has a built-in circulation frame connected to the feeding part. The bottom of the circulation frame is connected to a silicone sleeve with a valve, and the circulation frame has a built-in pushing member connected to the end of the silicone sleeve.

[0012] The telescopic sleeve is connected to the bottom of the circulation frame and is covered with a silicone sleeve. The bottom of the telescopic sleeve is connected to a quantitative frame with a partition plate. The quantitative frame is divided into multiple compartments. The bottom of the quantitative frame is arranged with hoppers corresponding to each compartment. The bottom of the hopper is connected to a material pipe. The bottom end of the material pipe is connected to an extrusion end. A ball valve rotates inside the extrusion end.

[0013] The mounting frame is set on the guide frame. The mounting frame is provided with a fixed mold whose hole is aligned with the extrusion end, and an electric slide rail connecting the slider and the quantitative frame. The guide frame is also provided with a double-axis cylinder three for assembling the mobile mold at the telescopic end. The mobile mold is embedded in the fixed mold.

[0014] Optionally, the feeding part includes a column arranged on the top of the machine base, a storage cylinder for storing magnetic powder is provided on the column, a delivery pump is installed at the bottom opening of the storage cylinder, and the outlet of the delivery pump is connected to a delivery pipe communicated with the circulation frame.

[0015] Optionally, the pushing member includes an electric screw arranged in the circulation frame, a shielding cover is arranged between the inner walls of the circulation frame and is covered on the electric screw, and a pushing rod is threaded on the electric screw, and the end of the pushing rod is connected to the bottom end of the silicone sleeve to push the silicone sleeve to bend and drive the valve to move.

[0016] Optionally, it also includes a vibration motor arranged on the outer wall of the quantitative frame, the vibration end of the vibration motor is connected to a spiral guide rod located inside the quantitative frame, the spiral guide rod has branches with the same number of compartments as the quantitative frame, and each branch end of the spiral guide rod is connected to an extension guide rod extending into the material tube.

[0017] Optionally, it also includes a connecting frame arranged on the fixed mold, and the connecting frame is provided with through holes consistent with the number and layout of the extrusion ends. The extrusion ends slide through the through holes and match the hole positions after the movable mold and the fixed mold are engaged; both ends of the ball valve are provided with clamping ends that are rotatably connected to the corresponding extrusion ends, and connecting shafts are clamped between adjacent clamping ends and on the head and tail clamping ends. Slots that abut and slide against the corresponding connecting shaft ends are also provided on both sides of the extrusion ends, and drive motors with output ends connected to adjacent connecting shafts are installed on both sides of the connecting frame.

[0018] Optionally, guide grooves are symmetrically provided at the bottom of the fixed mold, and connecting templates that abut against the movable mold slide between the guide grooves, and elastic parts are provided between the connecting templates and the inner walls of the guide grooves.

[0019] Optionally, it also includes a dual-axis cylinder 2 arranged on one side of the machine base, the telescopic end of the dual-axis cylinder 2 passes through the side wall of the guide frame, and the guide frame is provided with a notch opposite to the telescopic end of the dual-axis cylinder 2.

[0020] Optionally, scrapers are also provided on both sides of the bottom end of the valve housing.

[0021] Compared with the existing technology, the present invention has the following advantages: by integrating the reserve cylinder, circulation frame, quantitative frame, material pipe, extrusion end and pressing mold, a set of efficient and automated production structure is constructed to realize the continuous operation of the entire process of NdFeB magnetic powder from feeding, weighing, filling to pressing. The structure adopts an inclined design to provide a clear material movement guide, alleviate the fluidity problem caused by magnetic powder agglomeration, reduce manual intervention, make the process integrated, and reduce the material transfer loss problem caused by sub-links, so as to ensure the continuity and efficiency of the production process; in addition, the use of adjustable drive components such as various dual-axis cylinders and electric slides enables the various links of the equipment to be quickly connected, thereby quickly and flexibly adapting to different production needs, effectively improving the adaptability of the device, and significantly improving production efficiency and product quality consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the assembly structure of the present invention.

[0023] Figure 2 This is a three-dimensional structural cross-sectional view of the guide frame, dual-axis cylinder 1 and dual-axis cylinder 2 components of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of each component on the guide frame of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the components such as the delivery pipe, circulation frame and silicone sleeve of the present invention.

[0026] Figure 5 This is a three-dimensional structural cross-sectional view of the electric screw, push rod, shielding cover and other components of the present invention.

[0027] Figure 6 It is a three-dimensional structural cross-sectional view of the components such as the telescopic sleeve, quantitative frame and connecting frame of the present invention.

[0028] Figure 7 It is a three-dimensional structural diagram of the quantitative frame, electric slide rail and fixed mold components of the present invention.

[0029] Figure 8 This is a three-dimensional structural cross-sectional view of the vibration motor, spiral guide rod, extension guide rod and other components of the present invention.

[0030] Figure 9 This is a three-dimensional structural cross-sectional view of components such as the drive motor, ball valve, and clamping end of the present invention.

[0031] Figure 10 It is a schematic planar structural diagram of the ball valve, the clamping end, the connecting shaft and other components of the present invention.

[0032] Figure 11 This is a three-dimensional structural cross-sectional view of components such as the fixed mold, the connecting template, and the elastic member of the present invention.

[0033] The parts in the accompanying drawings are marked as follows: 100: forming mold, 1: machine base, 11: extension table, 2: bracket, 21: guide frame, 22: double-axis cylinder 1, 23: double-axis cylinder 2, 3: column, 31: storage cylinder, 32: delivery pump, 33: delivery pipe, 4: stand, 41: weighing device, 42: contact frame, 43: circulation frame, 431: electric screw, 432: push rod, 433: shielding cover, 44: silicone sleeve, 45: valve, 46: scraper, 5: telescopic sleeve, 51: quantitative frame, 511: vibration motor, 512: spiral guide rod, 513: extension guide rod, 52: hopper, 521: partition plate, 53: material tube, 54: extrusion end, 541: straight slot, 6: mounting frame, 60: electric slide rail, 61: fixed mold, 611: guide groove, 612: connecting template, 613: elastic part, 62: double-axis cylinder three, 63: mobile mold, 7: connecting frame, 71: drive motor, 72: ball valve, 73: clamping end, 74: connecting shaft. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example: A rare earth permanent magnet material NdFeB forming press device, such as Figures 1-8 Shown, including:

[0036] The machine base 1 has a raised extension platform 11 fixedly provided on the front of the top of the machine base 1, and the rear portion of the extension platform 11 is a downwardly inclined surface;

[0037] The bracket 2 is fixedly arranged on the top rear side of the machine base 1. A guide frame 21 for placing the forming mold 100 is arranged obliquely on the bracket 2. The forming mold 100 is used to place the magnetic embryo after press forming. The inclined guide frame 21 makes the position adjustment of the forming mold 100 smoother, which is convenient for the subsequent replacement of the forming mold 100 and the filling of the magnetic embryo. At the same time, the end of the guide frame 21 is connected to the extension platform 11. The inclined surface design of the extension platform 11 is used to close the end of the guide frame 21 and effectively limit the range of movement of the forming mold 100. A double-axis cylinder 22 is installed in the extension platform 11. The telescopic end of the double-axis cylinder 22 can pass through the extension platform 11 and extend into the guide frame 21. A plate is provided on the telescopic end of the double-axis cylinder 22 for pushing the forming mold 100 to adjust its position, which is convenient for the subsequent filling of the magnetic embryo.

[0038] The feeding part is arranged on the machine base 1 and is used to store the magnetic powder required for processing, ensuring that the device has sufficient material storage and ensuring the continuity and efficiency of production;

[0039] The stand 4 is fixedly arranged on the top of the extension platform 11. A fixedly connected weighing device 41 and a slidingly matched contact frame 42 are installed on the rear side of the upper end of the stand 4. The contact frame 42 contacts and cooperates with the detection end of the weighing device 41. The contact frame 42 has a built-in circulation frame 43 connected to the feeding part. The circulation frame 43 has a certain capacity and can transfer magnetic powder from the feeding part according to production needs, and accurately weigh the transferred magnetic powder through the weighing device 41, thereby realizing flexible and accurate control of the material amount, while ensuring the continuity of material transportation, further improving the adaptability and flexibility of the processing flow of the entire device. A silicone sleeve 44 with a valve 45 is connected to the bottom of the circulation frame 43, and a pusher connected to the end of the silicone sleeve 44 is built into the circulation frame 43. Due to its certain toughness, the silicone sleeve 44 can bend or deformed under the action of the pusher, thereby driving the valve 45 to move;

[0040] Specifically, the above components work together to form a complete feeding and conveying process. First, the feeding unit reserves magnetic powder and delivers a certain amount of magnetic powder to the circulation frame 43 as needed. Then, the weighing device 41 accurately measures the magnetic powder entering the circulation frame 43 to ensure that subsequent steps can be quantitatively processed and achieve effective control of the production process. At the same time, the pusher cooperates with the silicone sleeve 44 to drive the valve 45 to move to meet the needs of adding magnetic powder at different positions.

[0041] In addition, the bottom opening of the circulation frame 43 is designed to be inclined, which not only improves the fluidity of the magnetic powder and reduces the risk of blockage, but also cooperates with the control function of the valve 45 to effectively ensure the accuracy of the amount of added magnetic powder. Through the joint action of various components, it provides a solid foundation for the subsequent magnetic embryo pressing and molding, ensuring the consistency and stability of product quality.

[0042] The telescopic sleeve 5 is connected to the bottom of the circulation frame 43 and is covered with a silicone sleeve 44. The bottom of the telescopic sleeve 5 is connected to the quantitative frame 51. The quantitative frame 51 has spaced partitions 521 arranged inside, so that the interior of the quantitative frame 51 is divided into eight compartments. The bottom of the quantitative frame 51 is arranged with a hopper 52 corresponding to each compartment. The bottom of the hopper 52 is connected to a material pipe 53. The bottom end of the material pipe 53 is connected to the extrusion end 54. The ball valve 72 rotates inside the extrusion end 54.

[0043] Specifically, in order to ensure the quantitative distribution of magnetic powder required for each magnetic embryo, a quantitative frame 51 with built-in compartments is specially provided to quickly connect the magnetic powder inside the circulation frame 43, and separate the incoming magnetic powder by quantity through the weighing device 41, and then transport it through the connection between the hopper 52 and the material pipe 53, so as to carry out centralized processing of the interval magnetic powder in a coherent manner and achieve quantitative management; in order to further improve the accuracy of quantitative determination, the material pipe 53 and the hopper 52 are allowed to be made of transparent materials to observe the flow and filling of the magnetic powder, and a weight sensor can be installed inside the material pipe 53 to perform a secondary weighing test on the distributed magnetic powder. At the same time, the weight sensor can be electrically connected to the valve 45 so as to adjust the opening and closing of the valve 45 in real time according to the actual weighing results, thereby ensuring the consistency and accuracy of the magnetic powder usage in each production link, reducing the quality fluctuation caused by unstable material supply, and achieving more stable NdFeB compression molding manufacturing.

[0044] The mounting frame 6 is fixedly arranged at the front side of the guide frame 21. The mounting frame 6 is provided with a fixed mold 61 whose hole is aligned with the extrusion end 54, and an electric slide rail 60 connecting the slider to the quantitative frame 51. The guide frame 21 is also provided with a double-axis cylinder 62 with a telescopic end assembled with a movable mold 63. The bottom of the fixed mold 61 has a notch, and the front side of the movable mold 63 is provided with a protrusion that matches the notch. When the movable mold 63 is fitted with the fixed mold 61, the notch is filled by the protruding end after the two are fitted, so that the bottoms of the two are closed to form a complete pressing mold.

[0045] Specifically, after the feeding, conveying, and distribution processes, the measured magnetic powder is restricted by the ball valve 72 and cannot flow. Then, by controlling the ball valve 72 to open, the measured magnetic powder is poured into the holes formed by the movable mold 63 and the fixed mold 61. The magnetic powder is shaped by the holes between the movable mold 63 and the fixed mold 61 until the magnetic powder is filled. Then, the electric slide 60 can be started to drive the extrusion end 54 to press down to compact the loose magnetic powder in each hole, thereby achieving direct and rapid pressing and forming.

[0046] It can be seen that the extrusion end 54 can not only connect the material conveying between the material pipe 53 and the movable mold 63 and the fixed mold 61, but also integrate the pressing function. Figure 8The bottom end of the extrusion end 54 is flat and fits in with the hole of the fixed mold 61, so that the extrusion end 54 can press down and fit tightly into the hole formed by the movable mold 63 and the fixed mold 61, achieving a more effective pressing effect, thereby forming the magnetic embryo of the magnetic powder. Finally, after the pressing is completed, the movable mold 63 is flexibly adjusted by the double-axis cylinder 3 62 to separate from the fixed mold 61, providing sufficient moving space for the formed magnetic embryo. At the same time, due to the tendency of the device structure to tilt backward (see Figure 3 ), which is more conducive to the movement of the magnetic embryo, allowing it to be smoothly pressed down through the extrusion end 54 and quickly separated from the fixed mold 61, thereby reducing the occurrence of adhesion, and then entering the forming mold 100 to complete the final assembly. The entire process is continuous and efficient, ensuring the consistency of production and high product quality.

[0047] In summary, during the NdFeB pressing process, this device achieves integrated, continuous operation from feeding to pressing through a high degree of link integration, effectively reducing the differences caused by step-by-step operations. Furthermore, the overall structure of the device exhibits an inclined layout inclined toward the guide frame 21, breaking through the limitations of traditional horizontal mold manufacturing methods. This allows for smoother conveying and transfer of magnetic powder and magnetic embryos, further optimizing the continuity of the entire production process. Furthermore, the close connection between the various functional modules not only makes the operation process more controllable, but also enhances the flexibility and adaptability of the device. This effectively addresses the shortcomings of previous manual operations and conventional machines in terms of continuity and quality stability, ensuring high efficiency and consistent product quality during the NdFeB magnetic material forming process.

[0048] like Figure 1 and Figure 4 As shown, the feeding part includes a column 3 arranged on the left side of the top of the machine base 1, and a storage cylinder 31 for storing magnetic powder is provided on the top of the column 3. The bottom opening of the storage cylinder 31 is equipped with a delivery pump 32, and the outlet of the delivery pump 32 is connected to a delivery pipe 33 connected to the circulation frame 43.

[0049] like Figure 5 and Figure 6 As shown, the pushing member includes an electric screw 431 arranged in the circulation frame 43, and a shielding cover 433 is provided between the left and right inner walls of the circulation frame 43 to cover the electric screw 431 to block the entry of magnetic powder, and a pushing rod 432 is threadedly provided on the electric screw 431, and the pushing rod 432 moves left and right. The end of the pushing rod 432 is connected to the bottom end of the silicone sleeve 44 to push the silicone sleeve 44 to bend and drive the valve 45 to move.

[0050] like Figure 8 and Figure 9As shown, it also includes a vibration motor 511 arranged on the outer wall of the quantitative frame 51. The vibration end of the vibration motor 511 is connected to a spiral guide rod 512 located inside the quantitative frame 51. The spiral guide rod 512 has branches that are the same number as the compartments of the quantitative frame 51, ensuring that each compartment can receive vibration treatment from the spiral guide rod 512, ensuring the uniformity of vibration transmission, and each branch end of the spiral guide rod 512 is connected to an extension guide rod 513 extending into the inside of the material pipe 53. Through this vibration transmission method, the flow of magnetic powder in each compartment and the material pipe 53 is effectively promoted, preventing material blockage or uneven aggregation, so as to achieve a smoother and more accurate material transmission process.

[0051] like Figures 6-10 As shown, it also includes a connecting frame 7 arranged on the top of the fixed mold 61, and the connecting frame 7 is provided with perforations consistent with the number and layout of the extrusion ends 54. The aperture of the perforations is adapted to the size of the extrusion ends 54, and the extrusion ends 54 can slide through the perforations and match the hole position after the movable mold 63 and the fixed mold 61 are engaged; the left and right ends of the ball valve 72 are provided with clamping ends 73 rotatably connected to the corresponding extrusion ends 54, and a connecting shaft 74 is clamped between the two adjacent clamping ends 73 and on the head and tail clamping ends 73. The left and right sides of the extrusion end 54 are also provided with a straight groove 541 that abuts and slides with the end of the corresponding connecting shaft 74, and the left and right sides of the connecting frame 7 are provided with a straight groove 541 that abuts and slides with the end of the corresponding connecting shaft 74. The drive motors 71 are installed on both sides, and the output ends are connected to the adjacent connecting shafts 74. The engaging end of the connecting shaft 74 is designed as a straight-line protrusion structure, and the clamping end 73 is provided with a notch adapted to the protrusion structure. By rotating the ball valve 72, the position of the connecting shaft 74 can be adjusted, causing the protrusion structure thereon to present two states, horizontal and vertical. The horizontal state corresponds to the abutment state of the straight-line groove 541, thereby maintaining the engagement with the clamping end 73 and achieving the locking of the extrusion end 54. On the contrary, when the protrusion structure of the connecting shaft 74 is in the longitudinal direction, it is in a sliding state along the straight-line groove 541 to release the restriction of the extrusion end 54, so that it can implement the downward pressing operation, and see for details. Figure 10 It can be seen that the bottom end of the ball valve 72 is flat, so that when it is in a closed state, it can fit tightly with the bottom end of the extrusion end 54, thereby ensuring the subsequent pressing effect, and can prevent the ball valve 72 from deflecting during the pressing process, making it easier for the clamping end 73 of the ball valve 72 to accurately engage with the connecting shaft 74 during subsequent resetting.

[0052] like Figure 8 and Figure 11As shown, the bottom of the fixed mold 61 is symmetrically provided with guide grooves 611. A connecting template 612 slides between the guide grooves 611 and abuts against the movable mold 63. The connecting template 612 slides in the front-to-back direction. Elastic members 613 are provided between the connecting template 612 and the inner wall of the guide groove 611. In this embodiment, the elastic members 613 are springs. When the fixed mold 61 and the movable mold 63 are engaged, the movable mold 63 presses against the connecting template 612, causing the elastic member 613 to be compressed. At the same time, the raised end of the movable mold 63 closes the gap at the bottom of the fixed mold 61. Once the movable mold 63 is removed, the elastic member 613 returns to its original state, pushing the connecting template 612 to slide back into place, filling the gap and thus ensuring the integrity of the fixed mold 61.

[0053] like Figure 2 and Figure 3 As shown, it also includes a dual-axis cylinder 23 arranged on the left side of the top of the machine base 1. A plate is also connected to the telescopic end of the dual-axis cylinder 23, and the telescopic end of the dual-axis cylinder 23 can slide through the left side wall of the guide frame 21. A notch opposite to the telescopic end of the dual-axis cylinder 23 is provided on the guide frame 21 to facilitate pushing out the molding die 100 after loading.

[0054] like Figure 4-Figure 6 As shown, it also includes scrapers 46 arranged on the left and right sides of the bottom end of the outer shell of the valve 45. When the valve 45 is opened or closed, the scrapers 46 can effectively scrape off the residual material attached to the shell of the quantitative frame 51, and at the same time provide a guide for the subsequent inflow of magnetic powder.

[0055] To use the device, first place it on a stable surface and fill the reservoir 31 with sufficient magnetic powder. Next, place the forming mold 100 on the guide frame 21, positioning it on the plate of the dual-axis cylinder 1 22. At this point, the movable mold 63 and the fixed mold 61 are engaged. By driving the dual-axis cylinder 1 22, the position of the forming mold 100 on the guide frame 21 is adjusted so that the bottommost hole of the forming mold 100 aligns with the interlocking holes between the movable mold 63 and the fixed mold 61.

[0056] The delivery pump 32 is then activated, pumping the magnetic powder from the storage cylinder 31 into the circulation frame 43 via the delivery tube 33. As the magnetic powder continues to fill, the contact frame 42 and the circulation frame 43 are pressed against the weighing device 41, which measures the added magnetic powder in real time. When the required weight is reached, the delivery pump 32 is turned off, and valve 45 is closed, allowing the magnetic powder to remain within the circulation frame 43 and the silicone sleeve 44.

[0057] Next, the electric screw 431 is started, and the push rod 432 is used to drive the silicone sleeve 44 to bend and deform, thereby driving the valve 45 to move, so that the valve 45 is aligned with a compartment of the quantitative frame 51, and the scrapers 46 on both sides are placed between the corresponding wall surface and the partition plate 521. Then the valve 45 is opened to allow the magnetic powder to flow into the designated compartment, and the vibration motor 511 is started at the same time. Through the vibration coordination of the spiral guide rod 512 and the extension guide rod 513, it is ensured that the magnetic powder is evenly distributed in the compartments, hopper 52 and material pipe 53 of the same longitudinal quantitative frame 51. At this time, the ball valve 72 remains closed, and the valve 45 can be closed after the magnetic powder fills the corresponding space. Similarly, the electric screw 431 drives the push rod 432 to drive the valve 45 to move to the next compartment in turn, and the above operation is repeated until the magnetic powder in each compartment is filled.

[0058] After completion, the drive motor 71 is started, and the connecting shaft 74 is driven to rotate, which drives the ball valves 72 connected by the clamping end 73 to rotate and open. The raised structure of the connecting shaft 74 is placed horizontally and abuts against the slot 541, thereby limiting the movement of the extrusion end 54 on the connecting frame 7. Subsequently, the magnetic powder flows from each area into the corresponding hole between the fixed mold 61 and the movable mold 63 below. At the same time, the vibration motor 511 increases the fluidity of the magnetic powder, thereby assisting the magnetic powder to flow down quickly. After the magnetic powder has completely flowed in, the vibration motor 511 is turned off, and the drive motor 71 is started again to reverse the ball valve 72 and restore it to the closed state. The connecting shaft 74 rotates accordingly, and the raised structure at its end is placed longitudinally and aligned with the slot 541, so that the end of the connecting shaft 74 is in a movable state that can slide along the slot 541.

[0059] Subsequently, the electric slide 60 is activated, pushing the metering frame 51 downward, causing the synchronous telescopic sleeve 5 to expand and contract, and the metering frame 51, hopper 52, material pipe 53, and extrusion end 54 to move downward synchronously. Since the end of the connecting shaft 74 is in a longitudinal state, it follows the movement of the extrusion end 54 and slides along the slot 541, allowing the connecting shaft 74 to smoothly disengage from the engagement restriction of the clamping end 73 and the extrusion end 54 at the same time, thereby releasing the locking restriction of the extrusion end 54 and allowing it to move downward and extend into the hole between the fixed mold 61 and the movable mold 63, thereby extruding and molding the magnetic powder filled therein. After the pressing is completed, the dual-axis cylinder 3 62 is activated, driving the movable mold 63 to retract, the connecting template 612 to break free from the restraint of the movable mold 63, and the elastic member 613 to return to its original position, so that the connecting template 612 slides along the guide groove 611 to fill the gap below the fixed mold 61. The fixed mold 61 is fully opened and presents its complete form, filling the vacancy below the built-in hole of the fixed mold 61, thereby ensuring the integrity of the downward movement path of the formed magnetic embryo. Then, the extrusion end 54 is driven downward again to push the formed magnetic embryo into the lower forming mold 100, completing the pressing and forming of a row of magnetic powder.

[0060] Next, activate the dual-axis cylinder 1 (22), causing its telescopic end to further retract, moving the forming mold 100 downward along the guide frame 21 a certain distance to align with the next row of holes. Repeat this process until the forming mold 100 is completely filled. At this point, the telescopic end of the dual-axis cylinder 1 (22) is fully retracted, and the forming mold 100 loaded with the magnetic embryo is at the very bottom of the guide frame 21. Finally, activate the dual-axis cylinder 2 (23) to push the forming mold 100 out of the notch in the guide frame 21.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A rare earth permanent magnet material neodymium iron boron forming and pressing device, comprising: A machine base (1), wherein an extension platform (11) is provided on the top of the machine base (1); The invention is characterized in that it further comprises: a bracket (2) arranged on the machine base (1); a guide frame (21) for placing the forming mold (100) is arranged obliquely on the bracket (2); a double-axis cylinder (22) is installed in the extension platform (11) with a telescopic end capable of extending into the guide frame (21); A feeding portion, arranged on a machine base (1); A stand (4) is provided on the extension platform (11), a fixed weighing device (41) and a sliding contact frame (42) are mounted on the stand (4), the contact frame (42) contacts and cooperates with a detection end of the weighing device (41), a circulation frame (43) is built into the contact frame (42) and is connected to a feeding portion, a silicone sleeve (44) with a valve (45) is connected to the bottom of the circulation frame (43), and a pusher connected to the end of the silicone sleeve (44) is built into the circulation frame (43); The telescopic sleeve (5) is connected to the bottom of the circulation frame (43) and is covered with a silicone sleeve (44). The bottom of the telescopic sleeve (5) is connected to a quantitative frame (51) provided with a partition plate (521). The interior of the quantitative frame (51) is divided into a plurality of compartments. The bottom of the quantitative frame (51) is provided with hoppers (52) corresponding to the compartments. The bottoms of the hoppers (52) are all connected to a material pipe (53). The bottom end of the material pipe (53) is connected to an extrusion end (54). A ball valve (72) rotates in the extrusion end (54). The mounting frame (6) is arranged on the guide frame (21). The mounting frame (6) is provided with a fixed mold (61) whose hole position is aligned with the extrusion end (54), and an electric slide rail (60) connecting the slider to the quantitative frame (51). The guide frame (21) is also provided with a double-axis cylinder (62) with a telescopic end for assembling the movable mold (63). The movable mold (63) is fitted with the fixed mold (61).

2. A rare earth permanent magnet material NdFeB forming press device according to claim 1, characterized in that: The feeding part includes a column (3) arranged on the top of the machine base (1), a storage cylinder (31) for storing magnetic powder is arranged on the column (3), a delivery pump (32) is installed at the bottom opening of the storage cylinder (31), and the outlet of the delivery pump (32) is connected to a delivery pipe (33) connected to the circulation frame (43).

3. A rare earth permanent magnet material NdFeB forming press device according to claim 2, characterized in that: The pusher includes an electric screw (431) arranged in the circulation frame (43), a shielding cover (433) is arranged between the inner walls of the circulation frame (43) and is covered on the electric screw (431), and a push rod (432) is threadedly arranged on the electric screw (431), and the end of the push rod (432) is connected to the bottom end of the silicone sleeve (44) to push the silicone sleeve (44) to bend and drive the valve (45) to move.

4. A rare earth permanent magnet material NdFeB forming press device according to claim 3, characterized in that: The invention also includes a vibration motor (511) arranged on the outer wall of the quantitative frame (51), wherein the vibration end of the vibration motor (511) is connected to a spiral guide rod (512) located inside the quantitative frame (51), and the spiral guide rod (512) has a number of branches that is the same as the number of compartments of the quantitative frame (51), and an extension guide rod (513) extending into the interior of the material pipe (53) is connected to the end of each branch of the spiral guide rod (512).

5. A rare earth permanent magnet material NdFeB forming and pressing device according to claim 4, characterized in that: The invention also includes a connecting frame (7) arranged on the fixed mold (61), the connecting frame (7) is provided with perforations having the same number and layout as the extrusion ends (54), the extrusion ends (54) slide through the perforations and match the hole positions after the movable mold (63) and the fixed mold (61) are engaged; both ends of the ball valve (72) are provided with clamping ends (73) rotatably connected to the corresponding extrusion ends (54), and connecting shafts (74) are clamped between adjacent clamping ends (73) and on the head and tail clamping ends (73), and both sides of the extrusion ends (54) are provided with straight grooves (541) that abut and slide with the ends of the corresponding connecting shafts (74), and driving motors (71) whose output ends are connected to the adjacent connecting shafts (74) are installed on both sides of the connecting frame (7).

6. A rare earth permanent magnet material NdFeB forming press device according to claim 5, characterized in that: The bottom of the fixed mold (61) is symmetrically provided with guide grooves (611), and a connecting template (612) that abuts against the movable mold (63) slides between the guide grooves (611). Elastic members (613) are provided between the connecting template (612) and the inner wall of the guide groove (611).

7. A rare earth permanent magnet material NdFeB forming and pressing device according to claim 6, characterized in that: It also includes a double-axis cylinder 2 (23) arranged on one side of the machine base (1), the telescopic end of the double-axis cylinder 2 (23) passes through the side wall of the guide frame (21), and the guide frame (21) is provided with a notch opposite to the telescopic end of the double-axis cylinder 2 (23).

8. The rare earth permanent magnet material NdFeB forming press device according to claim 7, characterized in that: It also includes scrapers (46) arranged on both sides of the bottom end of the housing of the valve (45).

Images