Automatic forming equipment for coreless brushless motor shell

Abstract

The invention relates to the technical field of shell processing equipment, and discloses automatic forming equipment for a coreless brushless motor shell, the automatic forming equipment comprises an electrical box, and a liquid storage box for liquid storage and a pressurizing box for auxiliary molding are arranged on the two sides of the top end of the electrical box respectively; and the front-end treatment mechanism is arranged on the liquid storage tank and used for carrying out pretreatment on the flaky alloy material for machining the motor shell before machining. By adding and arranging the progressive forming mechanism, when a motor shell made of an alloy material is machined, the progressive forming mechanism can avoid the problems of cracking, damage and the like of a sheet-shaped alloy material due to overlarge single-time stress through multiple progressive pressing operations, and by matching with the positioning effect of an edge pressing sheet, the machining precision of the motor shell made of the alloy material is improved. According to the invention, the material can be ensured to be in a stable state during each pressing, the forming precision is improved, and after each pressing is finished, the shell prototype can be subjected to all-directional micro-molding by virtue of the resilience force of the silica gel film, and the fine forming deviation is corrected.

Description

Technical Field

[0001] The invention relates to the technical field of shell processing equipment, in particular to automatic forming equipment for coreless brushless motor shells. Background Art

[0002] As the core actuator of a drone's power system, the performance of the coreless brushless motor directly determines the drone's endurance, payload adaptability, and flight stability. It is widely used in scenarios such as consumer-grade aerial photography drones, industrial-grade plant protection drones, and logistics and delivery drones. Structurally, this type of motor is composed of key components such as a housing, bushing, sliding bearings, magnets, coreless windings, terminals, and end caps. As drones develop toward "lightweight and high power density," traditional cast iron and ordinary steel, due to their high density and low thermal conductivity, are no longer able to meet the motor's demand for "weight reduction and efficiency improvement." Alloy materials, with their high specific strength, excellent thermal conductivity, and good electromagnetic compatibility, have become the preferred material for main structures such as motor housings and end caps.

[0003] While alloy materials provide support for coreless brushless motor performance upgrades, their inherent material properties significantly conflict with the "thin-wall, deep-cavity" structural design requirements of the motor housing, leading to two key challenges in the housing manufacturing process. From a structural design perspective, to further reduce motor size and increase power density, current coreless brushless motor housings for drones generally adopt a thin-wall, deep-cavity structure. However, there is a natural conflict between the inherent characteristics of the alloy material and the structural requirements: on the one hand, the alloy material has a narrow plastic range. During the deep cavity stretching and stamping process, the side walls and bottom corners of the cavity are prone to local deformation exceeding the limit due to stress concentration, which in turn causes uneven wall thickness. Uneven wall thickness will directly destroy the symmetry of the magnetic field distribution inside the motor, resulting in increased electromagnetic torque fluctuations and jitter during drone flight; on the other hand, the alloy material has a low elastic modulus and a significant elastic recovery effect during unloading after processing, which is the problem of processing rebound reset. This problem not only affects the assembly accuracy of the sleeve and bearing, but may also cause the sealing gap between the housing and the end cover to exceed the standard, and rainwater and dust will invade the motor to cause short circuit failures, seriously restricting the processing yield and long-term reliability of the hollow cup brushless motor. Therefore, those skilled in the art have proposed an automatic forming equipment for hollow cup brushless motor housings 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 an automatic forming device for a hollow cup brushless motor housing, which solves the problem that the wall thickness of the motor housing made of alloy material is easily uneven during the processing.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic forming device for a coreless brushless motor housing, comprising

[0006] Electrical box, with a liquid storage tank for storing liquid and a booster tank for assisting molding respectively provided on both sides of the top of the electrical box;

[0007] A front-end processing mechanism is provided on the liquid storage tank and is used for pre-processing the sheet alloy material for machining the motor housing;

[0008] The progressive forming mechanism is provided on one side of the electrical box and is used to perform multiple progressive pressing processes on the sheet alloy material after being processed by the front-end processing mechanism;

[0009] An auxiliary shaping mechanism, which is arranged on the booster box and is used to perform auxiliary shaping on the housing prototype during the pressing and forming process of the progressive shaping mechanism;

[0010] The recycling mechanism is arranged on the upper part of the electrical box and is used to recycle and reuse the liquid material after the auxiliary molding mechanism is used.

[0011] Preferably, the front-end processing mechanism includes a placement seat, a placement seat is provided in the middle of the top of the liquid storage tank, the internal material of the placement seat is composed of a ferrite material layer and a ceramic layer from the inside to the outside, a molding die is provided in the middle of the top of the booster box, a processing tank is provided in the middle of the top of the molding die, and a plurality of alignment grooves are arranged in a circular array on the inner bottom of the processing tank.

[0012] Preferably, the front-end processing mechanism also includes a stepper driver, a stepper driver is provided in the middle of the top of the electrical box, and the top of the stepper driver passes through the middle between the liquid storage tank and the booster tank and extends upward, a processing seat is provided on the top of the placement seat, and a mounting seat is provided on the top of the molding mold seat, the processing seat and the mounting seat are connected by a connecting seat, a connecting sleeve is provided in the middle of the connecting seat, and the output end of the stepper driver is connected to the inner wall of the connecting sleeve.

[0013] Preferably, the front-end processing mechanism also includes an installation cavity, an installation cavity is opened inside the processing seat, a curved rod is arranged inside the installation cavity, an induction coil is arranged on the curved rod, an inner concave cavity is opened at the inner bottom of the processing seat, copper foil material sheets and strip-shaped soft magnetic sheets are staggered at the top of the inner wall of the concave cavity, an electromagnetic shielding cover is arranged on the outer wall of the processing seat, a high-frequency power supply is arranged on one side of the middle part of the rear end of the electrical box, a magnetic cross is rotatably connected to the top end of the inner wall of the processing seat, a drive motor is arranged in the middle part of the top of the processing seat, and the output end of the drive motor is connected to the middle part of the magnetic cross.

[0014] Preferably, the progressive forming mechanism includes a side seat, the upper middle part of one side of the electrical box is connected to the side seat by a fixing bolt, a static pressure seat is provided at the upper middle part of the inner side of the side seat, a hydraulic cylinder is provided at the middle part of the top end of the side seat, and the top end of the rod of the hydraulic cylinder is connected to the middle part of the static pressure seat, a distance sensor for monitoring the displacement distance of the static pressure seat is provided at the middle part of the top end of the inner side of the side seat, and a PID controller is provided at the upper middle part of the outer side of the side seat.

[0015] Preferably, the progressive forming mechanism also includes a lower press seat, and the upper middle part of the inner side of the mounting seat is connected to the lower press seat through an elastic pin shaft. After the pressure of the static pressure seat disappears, the lower press seat is driven by the elastic pin shaft thereon to reset inside the mounting seat. The bottom end circular array of the lower press seat has multiple edge pressing plates, and the bottom middle part of the edge pressing plates is fixedly connected to a molding column.

[0016] Preferably, the auxiliary molding mechanism includes a delivery pump, and a delivery pump is provided at the bottom end connection of the boosting tank and the rear side of the liquid storage tank. The liquid inlet of the delivery pump is connected to the interior of the liquid storage tank through a connecting pipe, and the liquid outlet of the delivery pump is connected to the interior of the boosting tank through a connecting pipe. The internal volume of the boosting tank is smaller than the internal volume of the liquid storage tank.

[0017] Preferably, the auxiliary molding mechanism also includes a silicone membrane, and a deformable silicone membrane is provided in the inner middle part of the alignment groove. The inner bottom circular array of the molding mold base has a plurality of supporting columns, and the supporting columns respectively correspond to the positions of the corresponding alignment grooves. The inner bottom circular array of the molding mold base has a plurality of liquid inlet holes, and the liquid inlet holes are connected to the interior of the booster box.

[0018] Preferably, the recycling mechanism includes a discharge pipe, and a discharge pipe is provided at the bottom connection between the boosting tank and the front end of the liquid storage tank. One end of the discharge pipe is connected to the interior of the boosting tank, and the other end of the discharge pipe is connected to the interior of the liquid storage tank.

[0019] Preferably, the recycling mechanism further includes a high-pressure solenoid valve, a high-pressure solenoid valve for controlling the flow state of the liquid inside the discharge pipe is provided in the middle of the discharge pipe, and a pressure gauge for monitoring the liquid pressure in the discharge pipe is provided on the high-pressure solenoid valve.

[0020] Working principle: When the hollow cup brushless motor housing is processed and formed, the front-end processing mechanism is started first. At this time, under the driving guidance of the stepper driver, the connecting seat and the mounting seat and processing seat on it are rotated to a state perpendicular to the electrical box. Then the staff places the laser-cut sheet alloy material in the placement seat, and then the rotating shaft of the stepper driver drives the connecting sleeve and the connecting seat to reset. When the connecting seat is reset, it drives the mounting seat and processing seat on it to reset synchronously, so that the mounting seat and the molding die at the bottom and the processing seat and the placement seat at the bottom overlap, and the interior of the molding die and the placement seat are closed. Then the high-frequency power supply on the electrical box is started. The high-frequency power supply is started. While the device is moving, an alternating current is input into the induction coil on the curved rod to generate an initial alternating magnetic field. The magnetic field generated in the processing seat is reflected and diverged by the cooperation of the copper foil material sheet on the top of the inner cavity and the strip soft magnetic sheet. At the same time, the magnetic field path is guided by the ferrite material layer in the placement seat, and the magnetic field is reflected by the cylindrical wall structure in the placement seat, so that the magnetic field is reflected and converged multiple times in the space formed by the placement seat and the processing seat, thereby increasing its magnetic field strength and uniformity. At this time, the alloy material placed in the placement seat, which is the center of the magnetic field, is excited by the strong magnetic field due to its high conductivity, thereby generating high-density eddy currents inside the sheet alloy material, and the eddy currents generate joules due to the resistance in the sheet alloy material. Heat is used to heat and preheat the sheet alloy material in a short time. The stress generated and residual by cutting the material is eliminated by preheating the material, so as to prevent the deformation of the alloy material due to internal residual stress during subsequent processing. After the sheet alloy material in the placement seat is preheated, the output power of the high-frequency power supply is increased, so that the magnetic field strength in the processing seat is increased again, and the sheet alloy material in the placement seat is adsorbed on the top wall of the inner concave cavity in the processing seat. After the adsorption is completed, the rotating shaft of the stepper driver drives the connecting sleeve, the connecting seat and the processing seats and mounting seats at both ends to rotate and exchange positions, so that the processing seat is rotated on the molding die seat. , and then the high-frequency power output power is reduced, and at the same time, the magnetic field generated in the processing seat is also reduced. At this time, the sheet alloy material adsorbed on the inner cavity falls off into the processing tank in the molding die seat, and then the driving motor on the processing seat is started. The rotating shaft of the driving motor rotates while driving the magnetic cross therein to rotate synchronously. While rotating, the magnetic cross drives the sheet alloy material in the processing tank to move synchronously by magnetic attraction, so that the sheet alloy material that has been preheated after moving enters the alignment groove in the processing tank during the movement, and is limited by the alignment groove, thereby completing the preheating and alignment processing of the sheet alloy material before processing;Then the progressive forming mechanism is started, and the sheet alloy material processed by the front-end processing mechanism has been aligned through the alignment groove in the processing tank. Then the hydraulic cylinder on the side seat is started, and the rod on the hydraulic cylinder is pushed out when the hydraulic cylinder is started. While the rod on the hydraulic cylinder is pushed out, it drives the static pressure seat at the bottom to move down synchronously. When the static pressure seat moves down, it enters the mounting seat, and then squeezes the lower pressure seat in the mounting seat to move downward. When the lower pressure seat moves down, it drives the molding column and the edge pressing piece at the bottom to move down synchronously. When the edge pressing piece moves down, it enters the alignment groove in the processing tank for re- The first alignment and positioning, the shaping column enters the alignment groove while moving downward and squeezes the sheet alloy material and the silicone membrane to deform synchronously, and the pressing distance is assisted by the supporting column to limit the pressing distance. After each pressing, the shell prototype in the silicone membrane is once again micro-shaped in all directions by the resilience of the silicone. At this time, the distance sensor on the side seat monitors the downward distance of the static pressure seat on the hydraulic cylinder in real time, and transmits it to the PID controller on the side seat. Then, after receiving the data information, the PID controller converts it into a control signal to control the hydraulic cylinder to perform multiple progressive downward operations to press the sheet alloy material. By means of multiple pressing, it is processed into the shape of the motor housing, thereby completing the progressive shaping of the motor housing; at the same time, the auxiliary shaping mechanism is started, and in the process of the progressive shaping mechanism performing progressive pressing processing on the sheet alloy material, the delivery pump is started, and at the same time as the delivery pump is started, the liquid medium in the liquid storage tank is pumped and input into the boosting tank through the connecting pipe. As the liquid medium in the liquid storage tank continues to increase, the pressure in the boosting tank also continues to increase, and the liquid medium in the boosting tank enters into the interior through the liquid inlet hole at the bottom of the shaping die base. As the liquid pressure inside the shaping die base continues to increase, the liquid medium in the shaping die base The liquid medium provides a full range of uniform pressure around the sheet alloy material during the pressing process in the silicone membrane, so that the pressure at various positions of the motor housing during the pressing process is uniform. This uniform pressing method can not only ensure the consistency of the processed motor housing and the processing mold, but also prevent the occurrence of inconsistent wall thickness during the processing process through hydraulic uniform pressing. At the same time, the resistance and cooling effect generated by the liquid medium can also reduce problems such as reset rebound during the pressing process, thereby completing the auxiliary molding process of the motor housing.After that, the recycling mechanism is activated. After the progressive molding mechanism completes the processing of the motor housing, the liquid medium in the booster tank is in a high-pressure state. The pressure data of the liquid medium is displayed by the pressure gauge. At the same time, the flow state of the liquid medium in the booster tank is controlled by the high-pressure solenoid valve on the discharge pipe. When the motor housing is processed, the staff opens the high-pressure solenoid valve on the discharge pipe through the control equipment. At this time, the liquid medium stored in the booster tank is returned to the liquid storage tank through the discharge pipe for collection, so as to facilitate subsequent recycling and reuse, thus completing the recycling and reuse of the high-pressure liquid medium.

[0021] The present invention provides an automatic forming device for a coreless brushless motor housing.

[0022] Beneficial effects:

[0023] 1. The present invention adds and sets a front-end processing mechanism. When processing sheet alloy materials, the mechanism can provide a high-quality pretreatment basis for subsequent processing during use. On the one hand, the sheet alloy materials can be uniformly preheated through magnetic field reflection and convergence, effectively eliminating the residual stress of the material cutting and avoiding deformation caused by stress problems during subsequent forming. At the same time, the magnetic field shielding design can reduce external interference and ensure the stability of the preheating process. On the other hand, with the help of the cooperation between the magnetic cross and the alignment groove, the material positioning can be accurately guided to ensure that the material is in the correct reference position before processing, avoiding the influence of positioning deviation on the subsequent forming accuracy, and the automatic transfer of materials can be achieved through structural linkage, reducing manual operation steps and improving pretreatment efficiency.

[0024] 2. The present invention adds and sets a progressive forming mechanism. When processing the motor housing of the alloy material, the mechanism can not only avoid the problems of cracking and breakage of the sheet alloy material due to excessive force in a single time through multiple progressive pressing operations, but also cooperate with the positioning function of the edge pressing sheet to ensure that the material is in a stable state during each pressing, thereby improving the forming accuracy. Moreover, after each pressing, the shell prototype can be micro-shaped in all directions with the help of the rebound force of the silicone film to correct slight forming deviations. At the same time, the elastic reset design of the lower pressing seat can quickly restore the initial state after a single pressing is completed, which is convenient for the next pressing operation, reduces the interval time between processes, and ensures the continuity and stability of the overall forming process.

[0025] 3. The present invention adds and sets an auxiliary molding mechanism. During the processing of the motor housing made of alloy material, the mechanism first provides all-round uniform pressure to the housing being formed through a liquid medium, ensuring that the force at each position of the housing is consistent, allowing the material to better fit the shape of the mold, ensuring the consistency between the housing and the mold after processing, and avoiding the problem of uneven wall thickness from the root. Secondly, the resistance and cooling effect of the liquid medium itself can effectively reduce the rebound and reset phenomenon of the alloy material after processing, and reduce the dimensional deviation of the housing after forming. At the same time, the continuous action of the liquid pressure can also improve the smoothness of the housing surface, enhance the integrity of the housing structure, and lay a good foundation for subsequent assembly.

[0026] 4. The present invention adds and sets a recycling mechanism. After the processing of the motor housing of the alloy material is completed, the mechanism can, on the one hand, recycle the liquid medium used in the auxiliary molding process and guide the liquid in the booster tank back to the liquid storage tank for storage, thereby avoiding waste of liquid medium and reducing the cost of consumables in the processing process. On the other hand, the recycling process is controlled by a high-pressure solenoid valve to ensure the stability of liquid recovery and prevent liquid leakage or contamination due to sudden pressure changes. At the same time, the recovered liquid can be directly used for subsequent processing without additional readjustment, thereby simplifying the operating process, improving the economy and environmental friendliness of equipment use, and reducing the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the rear structure of the present invention;

[0029] Figure 3 It is a schematic top view of the local structure of the connecting seat of the present invention;

[0030] Figure 4 It is a bottom view schematic diagram of the local structure of the connecting seat of the present invention;

[0031] Figure 5 This is a schematic diagram of the bottom structure of the processing seat of the present invention;

[0032] Figure 6 This is a schematic cross-sectional view of the internal structure of the processing seat of the present invention;

[0033] Figure 7 This is a cross-sectional diagram of the internal material composition of the placement seat of the present invention;

[0034] Figure 8 It is a schematic diagram of the partial structure of the side seat of the present invention;

[0035] Figure 9 Schematic cross-sectional view of the internal structure of the molding die base of the present invention;

[0036] Figure 10 It is a schematic diagram of the local structure of the discharge pipe of the present invention.

[0037] Among them: 1. Electrical box; 2. Stepper driver; 3. High-voltage solenoid valve; 4. Booster box; 5. Molding mold base; 6. Mounting base; 7. Static pressure base; 8. Side base; 9. Hydraulic cylinder; 10. Distance sensor; 11. Down-pressing base; 12. Connecting base; 13. Drive motor; 14. Processing base; 15. Placement base; 16. Liquid storage tank; 17. PID controller; 18. Delivery pump; 19. High-frequency power supply; 20. Connecting sleeve; 21. Molding column; 22. Edge pressing sheet; 23. Copper foil material sheet; 24. Magnetic cross; 25. Inner concave cavity; 26. Strip soft magnetic sheet; 27. Curved rod; 28. Induction coil; 29. ​​Installation cavity; 30. Electromagnetic shielding cover; 31. Ceramic layer; 32. Ferrite material layer; 33. Alignment groove; 34. Support column; 35. Silicone membrane; 36. Liquid inlet hole; 37. Processing tank; 38. Discharge pipe; 39. Pressure gauge. DETAILED DESCRIPTION

[0038] 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.

[0039] Please see the attached Figure 1 - Attachment Figure 2 The embodiment of the present invention provides an automatic molding device for a coreless brushless motor housing, comprising an electrical box 1, with a liquid storage tank 16 for storing liquid and a booster tank 4 for assisting molding respectively provided on both sides of the top of the electrical box 1;

[0040] Please see the attached Figure 3 - Attachment Figure 4 , a front-end processing mechanism, which is arranged on the liquid storage tank 16 and is used for pre-processing the sheet alloy material for processing the motor housing;

[0041] The front-end processing mechanism includes a placement seat 15, and the placement seat 15 is provided in the middle of the top of the liquid storage tank 16. The internal material of the placement seat 15 is composed of a ferrite material layer 32 and a ceramic layer 31 from the inside to the outside. The top middle of the booster box 4 is provided with a molding die 5, and the top middle of the molding die 5 is provided with a processing tank 37. The inner bottom circumferential array of the processing tank 37 has multiple alignment grooves 33.

[0042] The front-end processing mechanism also includes a stepper driver 2. The stepper driver 2 is arranged in the middle of the top of the electrical box 1, and the top of the stepper driver 2 passes through the middle between the liquid storage tank 16 and the booster tank 4 and extends upward. The top of the placement seat 15 is provided with a processing seat 14, and the top of the molding mold base 5 is provided with a mounting seat 6. The processing seat 14 and the mounting seat 6 are connected by a connecting seat 12. A connecting sleeve 20 is provided in the middle of the connecting seat 12, and the output end of the stepper driver 2 is connected to the inner wall of the connecting sleeve 20.

[0043] When the front-end processing mechanism is started, the connecting seat 12 is driven and guided by the stepper driver 2, and the connecting seat 12 and the mounting seat 6 and processing seat 14 thereon are rotated to a state perpendicular to the electrical box 1. Then the staff places the laser-cut sheet alloy material in the placement seat 15, and then the rotating shaft of the stepper driver 2 drives the connecting sleeve 20 and the connecting seat 12 to reset. While resetting, the connecting seat 12 drives the mounting seat 6 and processing seat 14 thereon to reset synchronously, so that the mounting seat 6 and the molding mold 5 at the bottom thereof and the processing seat 14 and the placement seat 15 at the bottom overlap, and the interior of the molding mold 5 and the placement seat 15 are closed.

[0044] Please see the attached Figure 5 - Attachment Figure 7 The front-end processing mechanism also includes an installation cavity 29. An installation cavity 29 is opened inside the processing seat 14. A curved rod 27 is arranged inside the installation cavity 29. An induction coil 28 is arranged on the curved rod 27. An inner concave cavity 25 is opened at the inner bottom of the processing seat 14. Copper foil material sheets 23 and strip-shaped soft magnetic sheets 26 are staggered at the top of the inner wall of the inner concave cavity 25. An electromagnetic shielding cover 30 is arranged on the outer wall of the processing seat 14. A high-frequency power supply 19 is provided on one side of the middle part of the rear end of the electrical box 1. The top of the inner wall of the processing seat 14 is rotatably connected with a magnetic cross 24. A drive motor 13 is provided in the middle of the top of the processing seat 14, and the output end of the drive motor 13 is connected to the middle part of the magnetic cross 24.

[0045] Then the high-frequency power supply 19 on the electrical box 1 is started. At the same time, the high-frequency power supply 19 inputs alternating current to the induction coil 28 on the curved rod 27, thereby generating an initial alternating magnetic field. The magnetic field generated in the processing seat 14 is reflected and diverged by the cooperation of the copper foil material sheet 23 on the top of the inner concave cavity 25 and the strip soft magnetic sheet 26. At the same time, the magnetic field path is guided by the ferrite material layer 32 in the placement seat 15, and the magnetic field is reflected by the cylindrical wall structure in the placement seat 15, so that the magnetic field is reflected and converged multiple times in the space formed by the placement seat 15 and the processing seat 14, thereby increasing its magnetic field strength and uniformity.

[0046] At this time, the alloy material placed in the placement seat 15, which is the center of the magnetic field, is excited by the strong magnetic field due to its high conductivity, thereby generating high-density eddy currents inside the sheet alloy material. The eddy currents generate Joule heat due to the resistance in the sheet alloy material, thereby heating and preheating the sheet alloy material in a short time. By preheating the material, the stress generated and residual by the cutting of the material is eliminated, thereby preventing the alloy material from being deformed due to internal residual stress during subsequent processing.

[0047] After the sheet alloy material in the placement seat 15 is preheated, the output power of the high-frequency power supply 19 is increased, so that the magnetic field strength in the processing seat 14 is increased again, and the sheet alloy material in the placement seat 15 is adsorbed on the top wall of the inner concave cavity 25 in the processing seat 14. After the adsorption is completed, the rotating shaft of the stepper driver 2 drives the connecting sleeve 20, the connecting seat 12 and the processing seats 14 and the mounting seat 6 at both ends to rotate and exchange positions, so that the processing seat 14 rotates above the molding die 5, and then the output power of the high-frequency power supply 19 is reduced, and at the same time, the magnetic field generated in the processing seat 14 is also reduced. At this time, the sheet alloy material adsorbed on the inner concave cavity 25 falls off into the processing tank 37 in the molding die 5.

[0048] Then the drive motor 13 on the processing seat 14 is started, and the rotating shaft of the drive motor 13 rotates while driving the magnetic cross 24 therein to rotate synchronously. While rotating, the magnetic cross 24 drives the sheet alloy material in the processing tank 37 to move synchronously by magnetic attraction, so that the sheet alloy material that has been preheated enters the alignment groove 33 in the processing tank 37 during the movement process, and is limited by the alignment groove 33, thereby completing the preheating and alignment processing of the sheet alloy material before processing.

[0049] Please see the attached Figure 8 - Attachment Figure 9 , a progressive forming mechanism, which is provided on one side of the electrical box 1 and is used to perform multiple progressive pressing processes on the sheet alloy material after being processed by the front-end processing mechanism;

[0050] The progressive forming mechanism includes a side seat 8, and the middle and upper part of one side of the electrical box 1 is connected to the side seat 8 by fixing bolts. A static pressure seat 7 is provided in the middle and upper part of the inner side of the side seat 8, and a hydraulic cylinder 9 is provided in the middle of the top end of the side seat 8. The top end of the rod of the hydraulic cylinder 9 is connected to the middle part of the static pressure seat 7. A distance sensor 10 for monitoring the displacement distance of the static pressure seat 7 is provided in the middle of the top end of the inner side of the side seat 8, and a PID controller 17 is provided in the middle and upper part of the outer side of the side seat 8.

[0051] When the progressive forming mechanism is started, the sheet alloy material processed by the front-end processing mechanism has been aligned through the alignment groove 33 in the processing tank 37, and then the hydraulic cylinder 9 on the side seat 8 is started. When the hydraulic cylinder 9 is started, the rod on it is pushed out, and while the rod on the hydraulic cylinder 9 is pushed out, it drives the static pressure seat 7 at the bottom to move downward synchronously. When the static pressure seat 7 moves downward, it enters the mounting seat 6, and then squeezes the lower pressure seat 11 in the mounting seat 6 to move downward. When the lower pressure seat 11 moves downward, it drives the molding column 21 and the edge pressing sheet 22 at the bottom to move downward synchronously. When it moves downward, the edge pressing sheet 22 enters the alignment groove 33 in the processing tank 37 for re-alignment and positioning.

[0052] The molding column 21 moves downward and enters the alignment groove 33, and squeezes the alloy material and the silicone membrane 35 to deform simultaneously. At the same time, the pressing distance is assisted by the supporting column 34. After each pressing, the shell prototype in the silicone membrane 35 is once again fully micro-molded by the resilience of the silicone.

[0053] The progressive forming mechanism also includes a lower pressure seat 11, and the upper and middle part of the inner side of the mounting seat 6 is connected to the lower pressure seat 11 through an elastic pin shaft. After the pressure of the static pressure seat 7 disappears, the lower pressure seat 11 is driven by the elastic pin shaft thereon to reset inside the mounting seat 6. There are multiple edge pressing plates 22 in a circular array at the bottom end of the lower pressure seat 11, and the middle part of the bottom end of the edge pressing plate 22 is fixedly connected to a molding column 21.

[0054] At this time, the distance sensor 10 on the side seat 8 monitors the downward movement distance of the static pressure seat 7 on the hydraulic cylinder 9 in real time, and transmits it to the PID controller 17 on the side seat 8. Then, after receiving the data information, the PID controller 17 converts it into a control signal to control the hydraulic cylinder 9 to perform multiple progressive downward operations, and process the sheet alloy material into the shape of the motor housing through multiple pressing operations, thereby completing the progressive shaping of the motor housing.

[0055] Please see the attached Figure 1 - Attachment Figure 2 , an auxiliary molding mechanism, which is arranged on the booster box 4 and is used to perform auxiliary molding processing on the shell prototype in the process of pressing and molding by the progressive molding mechanism;

[0056] The auxiliary molding mechanism includes a delivery pump 18, which is provided at the bottom connection of the boosting tank 4 and the rear side of the liquid storage tank 16. The liquid inlet of the delivery pump 18 is connected to the interior of the liquid storage tank 16 through a connecting pipe, and the liquid outlet of the delivery pump 18 is connected to the interior of the boosting tank 4 through a connecting pipe. The internal volume of the boosting tank 4 is smaller than the internal volume of the liquid storage tank 16.

[0057] When the auxiliary molding mechanism is started, the delivery pump 18 is started during the process of the progressive molding mechanism performing progressive pressing processing on the sheet alloy material. At the same time, the delivery pump 18 draws the liquid medium in the liquid storage tank 16 through the connecting pipe and inputs it into the boosting tank 4. As the liquid medium in the liquid storage tank 16 continues to increase, the pressure in the boosting tank 4 also continues to increase, and the liquid medium in the boosting tank 4 enters the interior through the liquid inlet hole 36 at the bottom of the molding die base 5.

[0058] The auxiliary molding mechanism also includes a silicone membrane 35, and a deformable silicone membrane 35 is provided in the middle part of the inner side of the alignment groove 33. The inner bottom end circular array of the molding mold base 5 has multiple supporting columns 34, and the supporting columns 34 correspond to the positions of the corresponding alignment grooves 33 respectively. The inner bottom circular array of the molding mold base 5 has multiple liquid inlet holes 36, and the liquid inlet holes 36 are connected to the interior of the booster box 4.

[0059] As the liquid pressure inside the molding die 5 continues to increase, the liquid medium in the molding die 5 provides an all-round uniform pressure around the sheet alloy material in the silicone membrane 35 during the pressing process, so that the pressure at various positions of the motor housing during the pressing process is uniform. This uniform pressure method can not only ensure the consistency of the processed motor housing and the processing mold, but also prevent the occurrence of inconsistent wall thickness during the processing process through hydraulic uniform pressure. At the same time, the resistance and cooling effect generated by this liquid medium can also reduce the reset rebound and other problems generated during the pressing process, thereby completing the auxiliary molding process of the motor housing.

[0060] Please see the attached Figure 10 , a recycling mechanism is arranged on the upper part of the electrical box 1, and is used to recycle and reuse the liquid material after the auxiliary molding mechanism is used.

[0061] The circulation recovery mechanism includes a discharge pipe 38, which is provided at the bottom connection of the boost tank 4 and the front end of the liquid storage tank 16. One end of the discharge pipe 38 is connected to the interior of the boost tank 4, and the other end of the discharge pipe 38 is connected to the interior of the liquid storage tank 16.

[0062] When the recycling mechanism is started, after the progressive forming mechanism completes the processing of the motor housing, since the liquid medium in the booster tank 4 is in a high-pressure state at this time, the pressure data of the liquid medium is displayed by the pressure gauge 39, and the flow state of the liquid medium in the booster tank 4 is also controlled by the high-pressure solenoid valve 3 on the discharge pipe 38.

[0063] The recycling mechanism also includes a high-pressure solenoid valve 3 . A high-pressure solenoid valve 3 is provided in the middle of the discharge pipe 38 for controlling the flow state of the liquid therein. A pressure gauge 39 is provided on the high-pressure solenoid valve 3 for monitoring the liquid pressure in the discharge pipe 38 .

[0064] After the motor housing is processed, the staff opens the high-pressure solenoid valve 3 on the discharge pipe 38 through the control equipment. At this time, the liquid medium stored in the booster tank 4 returns to the liquid storage tank 16 through the discharge pipe 38 for collection, so as to facilitate subsequent recycling and reuse, thereby completing the recovery and recycling of the high-pressure liquid medium.

[0065] 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. An automatic forming device for a coreless brushless motor housing, characterized in that: include An electrical box (1), with a liquid storage tank (16) for storing liquid and a booster tank (4) for assisting molding respectively provided on both sides of the top of the electrical box (1); A front-end processing mechanism is provided on the liquid storage tank (16) and is used for pre-processing the sheet alloy material for processing the motor housing; A progressive forming mechanism, which is arranged on one side of the electrical box (1) and is used to perform multiple progressive pressing and forming processes on the sheet alloy material after being processed by the front-end processing mechanism; An auxiliary shaping mechanism, which is arranged on the boost box (4) and is used to perform auxiliary shaping on the housing prototype during the compression molding process of the progressive molding mechanism; The recycling mechanism is arranged on the upper part of the electrical box (1) and is used to recycle and reuse the liquid material after the auxiliary molding mechanism has been used.

2. The automatic forming equipment for coreless brushless motor housing according to claim 1, characterized in that: The front-end processing mechanism includes a placement seat (15), a placement seat (15) is provided at the middle of the top end of the liquid storage tank (16), the internal material of the placement seat (15) is composed of a ferrite material layer (32) and a ceramic layer (31) from the inside to the outside, a molding die seat (5) is provided at the middle of the top end of the booster box (4), a processing groove (37) is provided at the middle of the top end of the molding die seat (5), and a plurality of alignment grooves (33) are arranged in a circular array on the inner bottom of the processing groove (37).

3. The automatic forming equipment for coreless brushless motor housing according to claim 2, characterized in that: The front-end processing mechanism also includes a stepper driver (2), a stepper driver (2) is provided at the middle of the top of the electrical box (1), and the top of the stepper driver (2) passes through the middle between the liquid storage tank (16) and the booster tank (4) and extends upward, a processing seat (14) is provided at the top of the placement seat (15), a mounting seat (6) is provided at the top of the molding mold seat (5), the processing seat (14) and the mounting seat (6) are connected via a connecting seat (12), a connecting sleeve (20) is provided in the middle of the connecting seat (12), and the output end of the stepper driver (2) is connected to the inner wall of the connecting sleeve (20).

4. The automatic forming equipment for coreless brushless motor housing according to claim 3, characterized in that: The front-end processing mechanism also includes an installation cavity (29), the interior of the processing seat (14) is provided with an installation cavity (29), the interior of the installation cavity (29) is provided with a curved rod (27), the curved rod (27) is provided with an induction coil (28), the inner bottom of the processing seat (14) is provided with an inner concave cavity (25), the top of the inner wall of the inner concave cavity (25) is staggered with copper foil material sheets (23) and strip-shaped soft magnetic sheets (26), an electromagnetic shielding cover (30) is provided on the outer wall of the processing seat (14), a high-frequency power supply (19) is provided on one side of the middle part of the rear end of the electrical box (1), the top of the inner wall of the processing seat (14) is rotatably connected to a magnetic cross (24), a driving motor (13) is provided at the middle part of the top of the processing seat (14), and the output end of the driving motor (13) is connected to the middle part of the magnetic cross (24).

5. The automatic forming equipment for coreless brushless motor housing according to claim 1, characterized in that: The progressive forming mechanism includes a side seat (8), the middle and upper part of one side of the electrical box (1) is connected to the side seat (8) through a fixing bolt, the middle and upper part of the inner side of the side seat (8) is provided with a static pressure seat (7), the middle part of the top end of the side seat (8) is provided with a hydraulic cylinder (9), and the top end of the rod of the hydraulic cylinder (9) is connected to the middle part of the static pressure seat (7), the middle part of the top end of the inner side of the side seat (8) is provided with a distance sensor (10) for monitoring the displacement distance of the static pressure seat (7), and the middle and upper part of the outer side of the side seat (8) is provided with a PID controller (17).

6. The automatic forming equipment for coreless brushless motor housing according to claim 3, characterized in that: The progressive forming mechanism also includes a lower pressing seat (11), and the middle and upper inner portion of the mounting seat (6) is connected to the lower pressing seat (11) through an elastic pin shaft. After the pressure of the static pressure seat (7) disappears, the lower pressing seat (11) is driven by the elastic pin shaft thereon to reset inside the mounting seat (6). The bottom end of the lower pressing seat (11) is provided with a plurality of edge pressing plates (22) in a circumferential array, and the bottom middle portion of the edge pressing plates (22) is fixedly connected to a molding column (21).

7. The automatic forming equipment for coreless brushless motor housing according to claim 1, characterized in that: The auxiliary molding mechanism includes a delivery pump (18), and the delivery pump (18) is provided at the bottom end connection of the rear side of the boosting tank (4) and the liquid storage tank (16). The liquid inlet of the delivery pump (18) is connected to the interior of the liquid storage tank (16) through a connecting pipe, and the liquid outlet of the delivery pump (18) is connected to the interior of the boosting tank (4) through a connecting pipe. The internal volume of the boosting tank (4) is smaller than the internal volume of the liquid storage tank (16).

8. The automatic forming equipment for coreless brushless motor housing according to claim 3, characterized in that: The auxiliary molding mechanism also includes a silicone membrane (35), and a deformable silicone membrane (35) is provided in the middle of the inner side of the alignment groove (33). The inner bottom circumferential array of the molding die base (5) has a plurality of supporting columns (34), and the supporting columns (34) respectively correspond to the positions of the corresponding alignment grooves (33). The inner bottom circumferential array of the molding die base (5) has a plurality of liquid inlet holes (36), and the liquid inlet holes (36) are connected to the interior of the booster box (4).

9. The automatic forming equipment for coreless brushless motor housing according to claim 1, characterized in that: The recycling mechanism includes a discharge pipe (38), and a discharge pipe (38) is provided at the bottom connection of the front ends of the boosting tank (4) and the liquid storage tank (16). One end of the discharge pipe (38) is communicated with the interior of the boosting tank (4), and the other end of the discharge pipe (38) is communicated with the interior of the liquid storage tank (16).

10. The automatic forming equipment for coreless brushless motor housing according to claim 9, characterized in that: The recycling mechanism further comprises a high-pressure electromagnetic valve (3), a high-pressure electromagnetic valve (3) for controlling the flow state of the liquid inside the discharge pipe (38) is provided in the middle of the discharge pipe (38), and a pressure gauge (39) for monitoring the pressure of the liquid in the discharge pipe (38) is provided on the high-pressure electromagnetic valve (3).

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