Permanent magnet processing equipment for permanent magnet synchronous motor

Abstract

The invention relates to the technical field of permanent magnet processing equipment, and discloses permanent magnet processing equipment for a permanent magnet synchronous motor, which comprises a base station which is used as a basic component of the whole device and is used for assembling and bearing each processing mechanism and a subordinate lower structural component; and the laminating and pressing mechanism is arranged at the top of the base station and is used for processing the permanent magnet raw materials in a laminating and pressing manner. By adding and arranging the flexible demolding mechanism, in the pressing process, due to the flexible buffering design of the bottom of the mechanism, the instant pressure of a mold on a blank can be effectively relieved, local stress concentration caused by rigid contact is avoided, the internal structure of the blank is protected against damage, and after pressing is finished, an air pressure auxiliary demolding mode plays a key role; and by uniformly applying pressure, the pressed blank is stably separated from the mold, so that the problems of internal cracks, magnetic domain disorder and the like caused by vibration in the traditional demolding are completely eradicated, and the stability of magnetic performance and mechanical performance of the permanent magnet is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet processing equipment, in particular to permanent magnet processing equipment for a permanent magnet synchronous motor. Background Art

[0002] A permanent magnet synchronous motor (PMSM) is a highly efficient AC motor that utilizes the interaction between the magnetic field generated by permanent magnets and the rotating magnetic field produced by the stator windings to achieve energy conversion. Its rotor uses permanent magnet material instead of traditional excitation windings, resulting in a compact structure, high power density, and excellent efficiency. During operation, three-phase AC current flows through the stator to form a rotating magnetic field. The magnetic force between the constant magnetic field generated by the permanent magnets and the rotating magnetic field pulls each other, driving the rotor to rotate synchronously. This magnetic force, based on the principle of attraction between opposite magnetic poles, avoids excitation losses and significantly improves motor efficiency and power factor. It is widely used in new energy vehicles, industrial automation, aerospace, and other fields, and is a core component for achieving efficient and energy-saving transmission.

[0003] In the traditional permanent magnet compact manufacturing process, the upper mold is mainly moved downward to press the permanent magnet raw material powder placed in the lower mold. However, because the upper and lower molds form a highly sealed space during the pressing process, a large amount of gas is trapped therein. As the mold continues to compress, the gas pressure in the enclosed space rises sharply. This high-pressure gas will impact the permanent magnet compact being formed, not only causing defects such as damage and dents on the surface of the compact, but also making it impossible to fully compact the raw material powder, resulting in a loose internal structure of the compact, reducing the molding quality and density of the compact. Therefore, those skilled in the art have proposed a permanent magnet processing equipment for permanent magnet synchronous motors to solve the above-mentioned technical problems. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a permanent magnet processing equipment for permanent magnet synchronous motors, which solves the problem that the quality of the subsequent molded blank is easily affected by the gas inside the mold during the pressing process of the permanent magnet blank.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A permanent magnet processing device for a permanent magnet synchronous motor, comprising:

[0006] The base, which serves as the basic component of the entire device, is used to assemble and support each processing mechanism and its subordinate structural components;

[0007] A laminating and pressing mechanism is provided on the top of the base and is used to process the permanent magnet raw materials by laminating and pressing;

[0008] A grading processing mechanism is provided on the base and is used to process the permanent magnet raw materials in a grading processing manner;

[0009] A spillage collection mechanism is provided on the top of the base, and is used to collect and process spillage of raw materials generated during the pressing process of the permanent magnet blank;

[0010] The flexible demoulding mechanism is arranged at the bottom of the base and is used for performing a flexible demoulding process on the permanent magnet blank after it is press-formed.

[0011] Preferably, the bonding pressing mechanism includes a connecting ring seat, a connecting ring seat is provided in the middle front part of the base, a bottom mold seat is provided inside the connecting ring seat, a compression mold cavity is provided inside the bottom mold seat, a mounting seat is provided on the upper part of the bottom mold seat, a movable cavity is provided at the bottom of the mounting seat, a bonding mold seat is slidably connected to the inside of the movable cavity, and the bottom of the bonding mold seat extends into the compression mold cavity.

[0012] Preferably, the bonding pressing mechanism also includes a conical cavity, and a plurality of conical cavities are equidistantly provided on the inner bottom of the bonding mold base. Micro grooves are provided on the side of the conical cavity close to the pressing mold cavity, and a blocking plate is fixedly connected to the middle of the side of the conical cavity close to the movable cavity, and elastic diaphragms are provided in the middle of both sides of the blocking plate.

[0013] Preferably, the grading processing mechanism includes a support seat, the middle and rear part of the top of the base is fixedly connected to the support seat, an electric cylinder is provided on one side of the middle part of the bottom end of the support seat, the top of the rod of the electric cylinder is connected to the middle part of the top of the mounting seat, a sub-controller is provided on one side of the middle part of the top of the support seat, which is used to adjust and control the pushing speed, pushing length and pushing pressure of the electric cylinder in sections, a control panel is provided on one side of the middle front part of the top of the base, and an emergency stop switch is provided on the other side of the middle front part of the top of the base.

[0014] Preferably, the spill collection mechanism includes a collection sponge sheet, a plurality of collection sponge sheets are equidistantly arranged inside the fitting mold base, a round seat is provided on the upper part of the mounting seat, a plurality of connecting ring seats are equidistantly arranged on the top of the mounting seat, and a discharge pipe is threadedly connected to the inside of the connecting ring seat, and the discharge pipe connects the movable cavity and the interior of the round seat, and a one-way air relief valve is provided in the middle of one side of the round seat.

[0015] Preferably, the spill collection mechanism also includes a rubber diaphragm flap, and a plurality of rubber diaphragms are equidistantly arranged inside the discharge pipe. The middle portion of the rubber diaphragm flap is in a closed state when it is not subjected to gas pressure, and the middle portion of the rubber diaphragm flap is in a conductive state when it is subjected to gas pressure and passes through gas. Concave portions are provided around the middle portion of the top of the rubber diaphragm flap for collecting the raw materials after sedimentation.

[0016] Preferably, the flexible demolding mechanism includes a base, the bottom of the base is fixedly connected to the base, sealed boxes are provided on both sides of the interior of the base, sealed cavities are opened inside the sealed boxes, the interiors of the two sealed boxes are connected through a pressure equalizing pipe, and an air pump is provided at the middle and rear part of the inner side of the base, and the exhaust port of the air pump is connected to the interior of the pressure equalizing pipe through a connecting pipe.

[0017] Preferably, the flexible demolding mechanism also includes a conducting seat, and a conducting seat is provided in the middle of both sides of the bottom end of the bottom mold seat, and end cavities are opened on both sides of the middle of the conducting seat, and the two end cavities are connected to each other through multiple connecting channels. A silicone airbag is provided at the bottom of the compression mold cavity, and the middle of the bottom ends of both sides of the silicone airbag are respectively connected to the interior of the two end cavities close to the inner side, and the middle of the side of the outer end cavity close to the connecting channel is rotatably connected with a one-way closing plate, and a plurality of micro through holes are equidistantly opened in the middle of the one-way closing plate, and side airbag seats are provided in the sealed cavity, and the side airbag seats are respectively connected to the interior of the end cavity where the one-way closing plate is installed.

[0018] Preferably, a protective fence is fixedly connected to the top of the base near the edge.

[0019] Working principle: Before processing the permanent magnets in the permanent magnet synchronous motor, the staff first pre-processes the raw materials needed for the permanent magnet embryo pressing process, and then adds the pre-processed raw materials into the die cavity in the bottom die seat to complete the preparation work before the permanent magnet processing; then the bonding pressing mechanism is started, and before the permanent magnet embryo is pressed, the bonding die seat on the mounting seat moves downward in the moving cavity under the influence of gravity, so that the surface of the bottom of the bonding die seat contacts the surface of the raw material in the die cavity, and at the same time, under the influence of the gravity of the bonding die seat, the bottom surface of the bonding die seat also contacts the surface of the raw material in the die cavity. The initial leveling treatment is carried out, and when the raw material in the die cavity is initially pressed, as the mounting seat continues to move downward, the space between the mobile cavity and the fitting die seat gradually shrinks. When the top of the fitting die seat moves to the top wall of the mobile cavity and contacts it, as the mounting seat continues to move downward, the mounting seat drives the fitting die seat at its bottom to move downward slowly. The fitting die seat moves downward slowly to squeeze the raw material in the die cavity, so that the gas in the raw material enters the conical cavity through the micro groove at the bottom of the fitting die seat, and as the gas in the conical cavity continues to increase and the gas in the raw material is continuously injected through the micro groove, the gas in the conical cavity is The body blows open the elastic diaphragms on both sides of the barrier plate, so that the gas in the conical cavity carries a very small amount of raw materials through the opened elastic diaphragms into the interior of the bonding die seat for collection. After the gas in the die cavity is exhausted, the pressure on the elastic diaphragm disappears and the elastic diaphragm is reset. At this time, the pressing operation of the permanent magnet embryo can be continued through the cooperation of the bonding die seat and the mounting seat, thereby completing the preliminary bonding and pressing of the permanent magnet embryo; then the grading processing mechanism is started, and after the raw materials in the die cavity are pressed into the prototype of the permanent magnet embryo through the bonding processing mechanism, the staff opens and closes the electric cylinder on the support seat through the control panel on the base. After the electric cylinder is started, the rod on it is pushed out, and at the same time, the rod on the electric cylinder drives the support base and the fitting mold base at the bottom to move downward synchronously, so as to press and form the raw materials in the die cavity. In addition, during the pressing and forming process of the permanent magnet embryo, the staff can send a control signal to the sub-controller on the support base through the control panel, so that the electric cylinder at the bottom of the support base applies pressure to the raw materials in the die cavity in stages and gradients, thereby preventing the raw materials in the die cavity from being unevenly distributed due to instantaneous excessive pressure during the pressing and forming process, and preventing the impact of the increased pressure inside the mold on the permanent magnet embryo and internal stress concentration.At the same time, the overflow collection mechanism is started. In the process of pressing and molding the raw materials in the die cavity, the air inside the mold is squeezed by the mounting seat and the fitting die seat and discharged into the interior of the fitting die seat and the moving cavity. In the process of the small amount of raw materials carried by the air entering the fitting die seat, the raw materials flowing in the air are initially collected by the collection sponge in the fitting die seat. When the volume of gas in the die cavity is large, the gas in the die cavity enters the interior of the fitting die seat and the moving cavity through the micro grooves, conical cavity and the gap opened by the elastic diaphragm in turn, and then enters the discharge cavity. The gas entering the discharge pipe expands the middle of the rubber diaphragms at various positions layer by layer as it flows in the discharge pipe and is discharged into the round seat. Finally, the gas entering the round seat squeezes the air inside and is discharged into the external environment through the one-way air release valve on it. After the gas is discharged, the pressure on the rubber diaphragms disappears, and the rubber diaphragms are reset to a closed state. At this time, the raw materials in the air settle, and the raw materials remaining in the discharge pipe are collected by the concave portion of the rubber diaphragms, thereby completing the multiple collection and processing of the raw materials scattered during the pressing process.Finally, the flexible demolding mechanism is started. In the process of pressing the raw material in the die cavity into a blank, the fitting die seat presses down the raw material in the die cavity while simultaneously squeezing the silicone airbag at its bottom, so that the gas in the silicone airbag enters the side airbag seat in the sealed cavity through the end cavity and the connecting channel in the conducting seat, and when the gas is discharged through the connecting channel, the one-way sealing plate is blown to flip, so that the gas is smoothly discharged into the side airbag seat in the sealed cavity, and at the same time, the air pump on the base is started, and the air pump supplies air to the pressure equalizing pipe through the connecting pipe, and then the gas entering the pressure equalizing pipe enters the sealed cavity in the sealing box. At the same time, due to the connecting setting of the pressure equalizing pipe, the gas pressure in the two sealed cavities is always at the same level. Then, when the gas in the silicone airbag is squeezed into the side airbag seat, the volume of the side airbag seat increases. At this time, the pressure in the sealed cavity remains unchanged, so the body As the volume increases, the pressure on the side airbag seats also increases. After the raw material in the die cavity is pressed into a permanent magnet blank, the electric cylinder rod resets, simultaneously driving the laminating die seat and mounting seat above it to reset synchronously. After the laminating die seat and mounting seat in the die cavity are reset, the pressure on the permanent magnet blank disappears, causing the side airbag seats to be affected by the air pressure in the sealed cavity. As a result, the excess air previously discharged from the side airbag seats is slowly injected through the micro-through holes in the one-way sealing plate and returned to the original silicone airbag. As the gas in the side airbag seats returns to the silicone airbag, the micro-through holes in the one-way sealing plate restrict the flow of the returning gas. As the gas in the silicone airbag is slowly injected, the silicone airbag slowly supports the permanent magnet blank pressed and formed in the die cavity, separating it from the mold, thereby completing the flexible demolding process for the permanent magnet blank after processing.

[0020] The present invention provides a permanent magnet processing device for a permanent magnet synchronous motor. It has the following beneficial effects:

[0021] 1. The present invention adds and sets a fitting pressing mechanism. During the process of pressing the permanent magnet raw material into a blank, the mechanism adopts a fitting pressing method. The micro grooves at the bottom of the fitting die base are used to provide an exhaust channel for the air in the mold. When the mold is closed for pressing, the gas can be quickly discharged along the exhaust groove, effectively avoiding local accumulation of gas, greatly reducing the gas pressure in the confined space. This design not only prevents the impact of gas pressure on the blank, avoids problems such as surface damage of the blank and loose internal structure, but also significantly improves the molding quality and precision of the blank. At the same time, the mechanism can also ensure the stability of the pressing process, reduce mold wear caused by gas impact, extend the service life of the mold, and provide reliable guarantee for efficient and high-quality permanent magnet production.

[0022] 2. The present invention adds and sets a graded pressing mechanism. During the process of pressing the permanent magnet raw materials into a green body, the mechanism adopts a graded pressing method. By applying pressure in stages and gradients, it can effectively avoid the problems of uneven raw material distribution and internal stress concentration caused by excessive instantaneous pressure in traditional single pressing. In the initial stage of pressing, the raw material is initially compacted with a relatively small pressure to make it initially formed and discharge most of the gas. In the subsequent pressing stage, the pressure is gradually increased to promote a uniform increase in the density of the permanent magnet green body and a denser structure. This method can not only significantly improve the dimensional accuracy and surface quality of the permanent magnet green body, reduce defects such as cracks and delamination caused by sudden pressure changes, but also optimize the internal organizational structure of the material, enhance the comprehensive performance of the permanent magnet, lay a good foundation for subsequent processing steps, and effectively improve production efficiency and product qualification rate.

[0023] 3. The present invention adds and sets a spill collection mechanism. During the process of pressing the permanent magnet raw materials into a blank, the mechanism can efficiently capture the gas discharged during the mold compression process and the scattered raw materials through multiple spill collection means. On the one hand, the timely treatment of the discharged gas effectively avoids the rapid increase of the gas pressure in the mold, and eliminates the quality problems such as surface breakage and dents of the permanent magnet blank caused by the impact of high-pressure gas from the root. On the other hand, the recovery and treatment of the scattered raw materials not only realizes the recycling of raw materials and reduces production costs, but also prevents the residual raw materials from causing wear on the mold. In addition, the stable internal pressure environment ensures that the internal structure of the permanent magnet blank after molding is compact and uniform, significantly improves the magnetic properties and mechanical properties of the product, and provides a reliable guarantee for the production of high-quality permanent magnets.

[0024] 4. The present invention adds and sets a flexible demolding mechanism. During the pressing process, the flexible buffer design at the bottom of the mechanism can effectively relieve the instantaneous pressure of the mold on the embryo, avoid local stress concentration caused by rigid contact, and protect the internal structure of the embryo from damage. After the pressing is completed, the air pressure-assisted demolding method plays a key role. By uniformly applying pressure, the pressed green body is smoothly separated from the mold, eliminating the problems of internal cracks and magnetic domain disorder caused by vibration in traditional demolding, ensuring the stability of the magnetic and mechanical properties of the permanent magnet. At the same time, the dual effects of flexible material and air pressure assistance greatly reduce the friction between the green body and the mold, effectively avoid surface scratches, wear and other defects, improve the product appearance quality and yield rate, and provide reliable guarantee for the efficient production of high-performance permanent magnets. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the right side structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the left side structure of the present invention;

[0027] Figure 3It is a schematic diagram of the partial structure of the mounting base of the present invention;

[0028] Figure 4 It is a cross-sectional schematic diagram of the internal structure of the mounting base of the present invention;

[0029] Figure 5 It is a cross-sectional schematic diagram of the bottom structure of the laminating mold base of the present invention;

[0030] Figure 6 It is a schematic cross-sectional view of the internal structure of the discharge pipe of the present invention;

[0031] Figure 7 It is a cross-sectional schematic diagram of the internal structure of the bottom mold base of the present invention;

[0032] Figure 8 It is a cross-sectional schematic diagram of the internal structure of the conductive base of the present invention;

[0033] Figure 9 It is a schematic cross-sectional view of the internal structure of the sealing box of the present invention.

[0034] Among them, 1. base; 2. equalizing pressure tube; 3. sealing box; 4. connecting ring seat; 5. emergency stop switch; 6. protective fence; 7. fitting mold base; 8. electric cylinder; 9. sub-controller; 10. support seat; 11. circular seat; 12. discharge pipe; 13. connecting ring seat; 14. control panel; 15. base; 16. bottom mold base; 17. air pump; 18. one-way air release valve; 19. mounting seat; 20. micro groove; 21. collecting sponge sheet; 22. moving cavity; 23. elastic diaphragm; 24. conical cavity; 25. barrier plate; 26. concave part; 27. rubber diaphragm; 28. die cavity; 29. silicone airbag; 30. conduction seat; 31. connecting channel; 32. end cavity; 33. one-way closing plate; 34. micro through hole; 35. side airbag seat; 36. sealing cavity. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. 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.

[0036] Please see the attached Figure 1 -Attached Figure 2 An embodiment of the present invention provides a permanent magnet processing device for a permanent magnet synchronous motor, including a base 1, which serves as the basic component of the overall device and is used to assemble and carry various processing mechanisms and their subordinate structural parts; a protective fence 6 is fixedly connected to the top of the base 1 near the edge.

[0037] Please see the attached Figure 3 -Attached Figure 5 , a laminating and pressing mechanism, which is arranged on the top of the base 1 and is used to process the permanent magnet raw material by laminating and pressing;

[0038] The bonding pressing mechanism includes a connecting ring seat 4. The connecting ring seat 4 is provided in the middle front part of the base 1. The bottom mold seat 16 is provided inside the connecting ring seat 4. The bottom mold seat 16 has a compression mold cavity 28 inside. The upper part of the bottom mold seat 16 is provided with a mounting seat 19. The bottom of the mounting seat 19 has a movable cavity 22. The interior of the movable cavity 22 is slidably connected to the bonding mold seat 7, and the bottom of the bonding mold seat 7 extends into the compression mold cavity 28.

[0039] When the bonding and pressing mechanism is started, before the permanent magnet embryo is pressed, the bonding mold base 7 on the mounting seat 19 moves downward in the movable cavity 22 due to the influence of gravity, so that the surface of the bottom of the bonding mold base 7 contacts the surface of the raw material in the die cavity 28. At the same time, under the influence of the gravity of the bonding mold base 7, the bottom surface of the bonding mold base 7 will also perform preliminary leveling on the surface of the raw material in the die cavity 28.

[0040] The bonding and pressing mechanism also includes a conical cavity 24. A plurality of conical cavities 24 are equidistantly provided at the inner bottom of the bonding mold base 7. Micro grooves 20 are provided on the side of the conical cavity 24 close to the die cavity 28. A blocking plate 25 is fixedly connected to the middle of the side of the conical cavity 24 close to the movable cavity 22, and an elastic diaphragm 23 is provided in the middle of both sides of the blocking plate 25.

[0041] And when the raw material in the die cavity 28 is initially pressed, as the mounting seat 19 continues to move downward, the space between the movable cavity 22 and the bonding die seat 7 gradually shrinks. When the top of the bonding die seat 7 moves to the top wall of the movable cavity 22 and contacts it, as the mounting seat 19 continues to move downward, the mounting seat 19 drives the bonding die seat 7 at the bottom thereof to move downward slowly at the same time. The bonding die seat 7 moves downward slowly to squeeze the raw material in the die cavity 28, so that the gas in the raw material enters the conical cavity 24 through the micro groove 20 at the bottom of the bonding die seat 7.

[0042] As the gas in the conical cavity 24 continues to increase and the gas in the raw material is continuously injected through the micro grooves 20, the gas in the conical cavity 24 blows open the elastic diaphragms 23 on both sides of the barrier plate 25, so that the gas in the conical cavity 24 carries a very small amount of raw materials through the opened elastic diaphragm 23 into the interior of the bonding mold base 7 for collection. After the gas in the die cavity 28 is discharged, the pressure on the elastic diaphragm 23 disappears and the elastic diaphragm 23 is reset. At this time, the pressing operation of the permanent magnet embryo can be continued through the cooperation of the bonding mold base 7 and the mounting seat 19, thereby completing the preliminary bonding and pressing process of the permanent magnet embryo.

[0043] Please see the attached Figure 1 -Attached Figure 2 , a grading processing mechanism, which is arranged on the base 1 and is used to process the permanent magnet raw materials in a grading processing manner;

[0044] The grading processing mechanism includes a support base 10, which is fixedly connected to the middle and rear part of the top of the base 1. An electric cylinder 8 is provided on one side of the middle part of the bottom end of the support base 10. The top of the rod of the electric cylinder 8 is connected to the middle part of the top of the mounting base 19. A sub-controller 9 is provided on one side of the middle part of the top of the support base 10 for segmented adjustment and control of the pushing speed, pushing length and pushing pressure of the electric cylinder 8. A control panel 14 is provided on one side of the middle and front part of the top of the base 1, and an emergency stop switch 5 is provided on the other side of the middle and front part of the top of the base 1.

[0045] The grading processing mechanism is started. After the raw materials in the die cavity 28 are pressed into the prototype of the permanent magnet blank by the bonding processing mechanism, the staff starts the electric cylinder 8 on the support seat 10 through the control panel 14 on the base 1. After the electric cylinder 8 is started, the rod on it is pushed out. While the rod on the electric cylinder 8 is pushed out, it drives the support seat 10 and the bonding die seat 7 at the bottom thereof to move downward synchronously, and the raw materials in the die cavity 28 are pressed and formed. In the process of pressing and forming the permanent magnet blank, the staff can send a control signal to the sub-controller 9 on the support seat 10 through the control panel 14, so that the electric cylinder 8 at the bottom of the support seat 10 applies pressure to the raw materials in the die cavity 28 in stages and gradients, thereby preventing the raw materials in the die cavity 28 from being unevenly distributed due to excessive instantaneous pressure during the pressing and forming process, the increased pressure inside the mold causing impact on the permanent magnet blank, and internal stress concentration.

[0046] Please see the attached Figure 4 and attached Figure 6 , a spill collection mechanism, which is arranged on the top of the base 1 and is used to collect and process the spilled raw materials generated during the pressing process of the permanent magnet embryo;

[0047] The spill collection mechanism includes a collection sponge sheet 21, and multiple collection sponge sheets 21 are equidistantly arranged inside the bonding mold base 7. A circular seat 11 is provided on the upper part of the mounting seat 19, and multiple connecting ring seats 13 are equidistantly arranged on the top of the mounting seat 19. The connecting ring seats 13 are all threadedly connected with a discharge pipe 12. The discharge pipe 12 connects the movable cavity 22 and the interior of the circular seat 11. A one-way air release valve 18 is provided in the middle of one side of the circular seat 11.

[0048] When the overflow collection mechanism is started, during the process of pressing and molding the raw materials in the die cavity 28, the air inside the mold is squeezed by the mounting seat 19 and the bonding die base 7 and discharged into the interior of the bonding die base 7 and the moving cavity 22. During the process of overflowing a small amount of raw materials carried by the air entering the bonding die base 7, the raw materials flowing in the air are preliminarily collected by the collecting sponge sheet 21 in the bonding die base 7.

[0049] The overflow collection mechanism also includes a rubber diaphragm 27. A plurality of rubber diaphragms 27 are equidistantly arranged inside the discharge pipe 12. The middle portion of the rubber diaphragm 27 is closed when it is not subjected to gas pressure. When the rubber diaphragm 27 is subjected to gas pressure and gas passes through it, the middle portion is in a conductive state. Concave portions 26 are provided around the middle portion of the top of the rubber diaphragm 27 for collecting the raw materials after sedimentation.

[0050] When the volume of gas in the die cavity 28 is large, the gas in the die cavity 28 enters the interior of the die base 7 and the movable cavity 22 through the micro grooves 20, the conical cavity 24 and the gap opened by the elastic diaphragm 23 at the bottom of the die base 7 in turn, and then enters the discharge pipe 12. When the gas entering the discharge pipe 12 flows in the discharge pipe 12, the middle part of the rubber diaphragm 27 at each position is stretched layer by layer and discharged into the round seat 11. Finally, the gas entering the round seat 11 squeezes the air inside it and discharges it to the external environment through the one-way air relief valve 18 on it. After the gas is discharged, the pressure on the rubber diaphragm 27 disappears, and the rubber diaphragm 27 is reset to a closed state. At this time, the raw material in the air settles, and the raw material remaining in the discharge pipe 12 is collected by the concave portion 26 on the rubber diaphragm 27, thereby completing the multiple collection and processing of the raw materials scattered during the pressing process.

[0051] In this device, the use of the rubber diaphragm 27 in the discharge pipe 12 has the following advantages:

[0052] Achieve one-way conduction: During the process of pressing and molding the raw materials in the die cavity 28, when the air in the mold is squeezed into the discharge pipe 12, the gas can expand the middle part of the rubber diaphragm 27 layer by layer, so that the gas can be smoothly discharged into the circular seat 11. When the gas is discharged, the pressure on the rubber diaphragm 27 disappears and it will reset to a closed state, preventing external air and other impurities from entering the discharge pipe 12, playing the role of one-way conduction and ensuring the directionality and sealing of gas discharge.

[0053] Collecting raw materials: When a small amount of raw materials carried by gas overflows through the discharge pipe 12, the concave portion 26 on the rubber diaphragm 27 can collect the raw materials remaining in the discharge pipe 12, avoiding waste or pollution caused by the discharge of raw materials with the gas, and realizing effective collection of the raw materials scattered during the pressing process, which helps to improve the utilization rate of raw materials and keep the working environment clean.

[0054] Please see the attached Figure 7 -Attached Figure 9 , a flexible demoulding mechanism is arranged at the bottom of the base 1 and is used to perform flexible demoulding on the permanent magnet blank after it is pressed and formed.

[0055] The flexible demolding mechanism includes a base 15, and the bottom of the base 1 is fixedly connected to the base 15. Sealed boxes 3 are provided on both sides of the interior of the base 15. A sealed cavity 36 is opened inside the sealed box 3. The interiors of the two sealed boxes 3 are connected through a pressure equalizing pipe 2. An air pump 17 is provided at the middle and rear part of the inner side of the base 15, and the exhaust port of the air pump 17 is connected to the interior of the pressure equalizing pipe 2 through a connecting pipe.

[0056] When the flexible demolding mechanism is started, in the process of pressing the raw materials in the die cavity 28 into a blank, the fitting die seat 7 presses down the raw materials in the die cavity 28 and simultaneously squeezes the silicone airbag 29 at its bottom, so that the gas in the silicone airbag 29 enters the side airbag seat 35 in the sealing cavity 36 through the end cavity 32 and the connecting channel 31 in the conducting seat 30, and when the gas is discharged through the connecting channel 31, the one-way closing plate 33 is blown to flip, so that the gas is smoothly discharged into the side airbag seat 35 in the sealing cavity 36.

[0057] The flexible demolding mechanism also includes a conducting seat 30, which is provided with a conducting seat 30 in the middle of both sides of the bottom end of the bottom mold seat 16, and end cavities 32 are opened on both sides of the middle of the conducting seat 30. The two end cavities 32 are connected to each other through multiple connecting channels 31. A silicone airbag 29 is provided at the bottom of the compression mold cavity 28, and the middle of the bottom ends of both sides of the silicone airbag 29 are respectively connected to the interior of the two end cavities 32 close to the inner side. The middle of the side of the outer end cavity 32 close to the connecting channel 31 is rotatably connected to a one-way closing plate 33, and a plurality of micro through holes 34 are equidistantly opened in the middle of the one-way closing plate 33. Side airbag seats 35 are provided in the sealing cavity 36, and the side airbag seats 35 are respectively connected to the interior of the end cavity 32 on which the one-way closing plate 33 is installed.

[0058] At the same time, the air pump 17 on the base 15 is started, and the air pump 17 supplies air to the pressure equalizing tube 2 through the connecting tube. Then, the gas entering the pressure equalizing tube 2 enters the sealed cavity 36 in the sealed box 3. At the same time, due to the connected setting of the pressure equalizing tube 2, the gas pressure in the two sealed cavities 36 is always at the same level. Then, when the gas in the silicone airbag 29 is squeezed into the side airbag seat 35, the volume of the side airbag seat 35 increases. At this time, the pressure in the sealed cavity 36 remains unchanged, so the pressure on the side airbag seat 35 after the volume increases also increases synchronously.

[0059] After the raw materials in the die cavity 28 are pressed into a permanent magnet embryo, the rod body of the electric cylinder 8 is reset. At the same time, the fitting die seat 7 and the mounting seat 19 on it are reset synchronously. After the fitting die seat 7 and the mounting seat 19 in the die cavity 28 are reset, the pressure on the permanent magnet embryo disappears, and the side airbag seat 35 is affected by the air pressure in the sealing cavity 36, so that the excess air previously discharged in the side airbag seat 35 is slowly injected through the micro-through holes 34 on the one-way sealing plate 33 and returned to the original silicone airbag 29. When the gas in the side airbag seat 35 returns to the silicone airbag 29, the flow rate of the returning gas is restricted by the micro-through holes 34 on the one-way sealing plate 33. As the gas in the silicone airbag 29 is slowly injected, the silicone airbag 29 slowly supports the permanent magnet embryo pressed and formed in the die cavity 28 to separate and separate, thereby completing the flexible demolding process of the permanent magnet embryo after processing.

[0060] During the flexible demoulding process, the micro-through holes 34 on the one-way sealing plate 33 play an important role in limiting the return gas flow, as follows:

[0061] Flexible support: By limiting the flow of gas from the side airbag seat 35 back to the silicone airbag 29, the silicone airbag 29 is slowly inflated. This allows the silicone airbag 29 to slowly support the permanent magnet embryo in the die cavity 28, avoiding the sudden expansion of the silicone airbag 29 due to rapid gas return, which would exert a large impact on the permanent magnet embryo. This achieves flexible support for the permanent magnet embryo and prevents damage to the embryo.

[0062] Ensure smooth demolding: Flow limiting ensures a smoother demolding process. Without the micro-through holes 34 to limit the flow, gas could escape rapidly, resulting in unstable support from the silicone airbag 29. This could cause the permanent magnet embryo to wobble or tilt during demolding. By limiting the return gas flow through the micro-through holes 34, the support from the silicone airbag 29 increases evenly and slowly, ensuring the permanent magnet embryo remains stable during demolding, avoiding damage to its internal structure and surface due to uneven force, and guaranteeing the overall performance and reliability of the permanent magnet.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet processing equipment for a permanent magnet synchronous motor, characterized in that: include, A base (1), which serves as the basic component of the entire device and is used to assemble and support various processing mechanisms and their subordinate structural components; A laminating and pressing mechanism is provided on the top of the base (1) and is used for processing the permanent magnet raw material by laminating and pressing; A grading processing mechanism is provided on the base (1) and is used for processing the permanent magnet raw material in a grading processing manner; A spillage collection mechanism, which is arranged on the top of the base (1) and is used to collect and process spillage raw materials generated during the pressing process of the permanent magnet embryo; A flexible demoulding mechanism is arranged at the bottom of the base (1) and is used for performing a flexible demoulding process on the permanent magnet embryo after it is pressed and formed.

2. The permanent magnet processing equipment for permanent magnet synchronous motor according to claim 1, characterized in that: The bonding pressing mechanism includes a connecting ring seat (4), a connecting ring seat (4) is provided at the front center of the base (1), a bottom die seat (16) is provided inside the connecting ring seat (4), a pressing die cavity (28) is provided inside the bottom die seat (16), a mounting seat (19) is provided at the top of the bottom die seat (16), a movable cavity (22) is provided at the bottom of the mounting seat (19), a bonding die seat (7) is slidably connected inside the movable cavity (22), and the bottom of the bonding die seat (7) extends into the pressing die cavity (28).

3. The permanent magnet processing equipment for permanent magnet synchronous motor according to claim 2, characterized in that: The laminating and pressing mechanism further comprises a conical cavity (24), a plurality of conical cavities (24) are equidistantly provided on the inner bottom of the laminating die seat (7), a micro groove (20) is provided on the side of the conical cavity (24) close to the die cavity (28), a blocking plate (25) is fixedly connected to the middle of the side of the conical cavity (24) close to the movable cavity (22), and elastic diaphragms (23) are provided in the middle of both sides of the blocking plate (25).

4. The permanent magnet processing equipment for a permanent magnet synchronous motor according to claim 1, characterized in that: The grading processing mechanism comprises a support seat (10), the support seat (10) is fixedly connected to the middle and rear part of the top end of the base (1), an electric cylinder (8) is provided on one side of the middle part of the bottom end of the support seat (10), the top end of the rod body of the electric cylinder (8) is connected to the middle part of the top end of the mounting seat (19), a sub-controller (9) is provided on one side of the middle part of the top end of the support seat (10), and is used to adjust and control the ejection speed, ejection length and ejection pressure of the electric cylinder (8) in sections, a control panel (14) is provided on one side of the middle and front part of the top end of the base (1), and an emergency stop switch (5) is provided on the other side of the middle and front part of the top end of the base (1).

5. The permanent magnet processing equipment for permanent magnet synchronous motor according to claim 2, characterized in that: The spillage collection mechanism comprises a collection sponge sheet (21), a plurality of collection sponge sheets (21) are equidistantly arranged inside the laminating mold base (7), a reciprocating seat (11) is arranged on the upper part of the mounting seat (19), a plurality of connecting ring seats (13) are equidistantly arranged on the top of the mounting seat (19), and a discharge pipe (12) is threadedly connected to the inside of the connecting ring seat (13), and the discharge pipe (12) connects the movable cavity (22) and the inside of the reciprocating seat (11), and a one-way air release valve (18) is arranged in the middle of one side of the reciprocating seat (11).

6. The permanent magnet processing equipment for permanent magnet synchronous motor according to claim 5, characterized in that: The overflow collection mechanism also includes a rubber diaphragm (27). A plurality of rubber diaphragms (27) are equidistantly arranged inside the discharge pipe (12). The middle portion of the rubber diaphragm (27) is in a closed state when not under gas pressure. When the rubber diaphragm (27) is under gas pressure and gas passes through it, the middle portion is in a conductive state. Concave portions (26) are arranged around the middle portion of the top of the rubber diaphragm (27) for collecting the raw materials after sedimentation.

7. The permanent magnet processing equipment for a permanent magnet synchronous motor according to claim 6, characterized in that: The flexible demoulding mechanism includes a base (15), the bottom of the base (1) is fixedly connected to the base (15), sealed boxes (3) are provided on both sides of the interior of the base (15), and sealed cavities (36) are provided inside the sealed boxes (3), the interiors of the two sealed boxes (3) are connected through a pressure equalizing pipe (2), and an air pump (17) is provided at the middle and rear part of the inner side of the base (15), and the exhaust port of the air pump (17) is connected to the interior of the pressure equalizing pipe (2) through a connecting pipe.

8. The permanent magnet processing equipment for a permanent magnet synchronous motor according to claim 7, characterized in that: The flexible demoulding mechanism also includes a conducting seat (30), and the conducting seat (30) is provided at the middle of both sides of the bottom end of the bottom mold seat (16), and the end cavity (32) is opened on both sides of the middle of the conducting seat (30), and the two end cavities (32) are connected to each other through multiple connecting channels (31). A silicone airbag (29) is provided at the bottom of the compression mold cavity (28), and the middle of the bottom ends of both sides of the silicone airbag (29) are respectively connected with the interior of the two end cavities (32) close to the inner side, and the middle of one side of the outer end cavity (32) close to the connecting channel (31) is rotatably connected with a one-way closing plate (33), and the middle of the one-way closing plate (33) is equidistantly opened with multiple micro through holes (34), and the sealing cavity (36) is provided with a side airbag seat (35), and the side airbag seat (35) is respectively connected with the interior of the end cavity (32) installed with the one-way closing plate (33).

9. The permanent magnet processing equipment for a permanent magnet synchronous motor according to claim 1, characterized in that: It also includes a protective fence (6), and the top of the base (1) is fixedly connected to the protective fence (6) near the edge.

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