High-efficiency multi-head automatic winding device for motor stators

Abstract

The invention relates to the technical field of motor stator winding, and discloses a motor stator high-efficiency multi-head automatic winding device, including a winding machine, wherein a winding unit and a positioning unit are respectively installed on the outside of the winding machine, the winding unit includes a plurality of wire reels, each of which is symmetrically and fixedly connected with a camshaft, and the surface of the winding unit is provided with an elastic support component for preventing the copper wire from being subjected to uneven traction during the winding process, and the copper wire is in contact with the camshaft and the top shaft to form a four-point contact mode, and under the action of the top spring, the top shaft can also move slightly so as to adaptively adjust the traction force exerted on the copper wire, specifically, when the camshaft is in motion, due to the cooperation of the top shaft and the top spring, when the camshaft moves to the top point and causes a sudden change in traction, the top shaft can adaptively adjust its position according to the actual situation, and buffer and balance the change in traction through the elasticity of the top spring, thereby avoiding the situation where the traction force suddenly increases.

Description

Technical Field

[0001] The invention relates to the technical field of motor stator winding, in particular to a motor stator high-efficiency multi-head automatic winding device. Background Art

[0002] The motor stator high-efficiency multi-head automatic winding device is an automated equipment designed specifically for motor stators. It winds the copper wire accurately and efficiently on the stator under the guidance of the copper wire nozzle and the camshaft, thereby reducing manual intervention through automated operation and improving production efficiency and product quality.

[0003] However, there are still some problems with the existing winding devices: First, in the existing winding technology, the winding operation is mainly achieved by relying on the continuous rotation of the wire reel and the camshaft to pull and guide the copper wire. However, as far as the camshaft is pulling the copper wire, the camshaft makes a circular motion, causing the traction force on the copper wire to be extremely unevenly distributed.

[0004] Specifically, when the camshaft moves to the four specific points of up, down, left and right, the traction force on the copper wire will reach the maximum value. This sudden increase in traction significantly increases the risk of copper wire breakage. On the other hand, this will destroy the uniformity of winding, and uneven winding will directly affect the performance of the motor. At other positions of the camshaft's circular motion, the traction force on the copper wire is relatively small, which causes the copper wire to be easily loosened or offset during the winding process, which seriously affects the winding accuracy. In addition, the uneven distribution of tension will also increase the wear of the copper wire, thereby shortening the service life of the copper wire.

[0005] In addition, centrifugal force will also have an additional impact on the copper wire when the camshaft rotates at high speed. According to physical principles, when the centrifugal force increases, in order to maintain the circular motion of the copper wire, a larger pulling force is required to balance the centrifugal force. Therefore, when the copper wire is at different positions on the circumference, the pulling force will be different due to the difference in centrifugal force. This difference causes a sudden change in the pulling force. At the same time, during the circular motion, the component of gravity along the tangent direction of the circle will change with the position of the copper wire. When the copper wire is in the upper half of the circle, the gravity component is in the opposite direction to the pulling force, which will reduce the pulling force. In the lower half of the circle, the gravity component is in the same direction as the pulling force, which will increase the pulling force. This change in the gravity component will also cause uneven or even sudden pulling force, which undoubtedly makes the pulling force situation during the winding process more complicated, making it difficult to guarantee the stability and accuracy of the winding.

[0006] Secondly, when the copper wire is wound onto the stator at high speed, it generates heat due to constant bending. Due to its frequent bending and deformation, the lattice structure inside the copper wire constantly shifts and rubs. According to the principles of material mechanics, this change in the microstructure will lead to the dissipation of energy, which is then released in the form of heat. Due to the fast winding speed, the number of bending times per unit time increases, and the rate of heat generation also increases accordingly.

[0007] As its temperature rises, the resistivity of the copper wire will increase. According to Ohm's law, when the current remains unchanged, an increase in resistivity means an increase in resistance, which will cause an increase in copper loss in the motor after production and during operation. The increase in copper loss will further increase the operating temperature of the motor, forming a vicious circle.

[0008] Third, in the preparation stage before winding, time-consuming fine-tuning of the stator position is a significant problem. The operator needs to accurately place the stator with the insulating sleeve on the base, but often needs to perform fine-tuning of the position to meet the requirements. This process not only increases production time, but also reduces work efficiency. In addition, the uncertainty of manual operation will also lead to inaccurate stator position, which in turn affects the subsequent winding quality and motor performance.

[0009] To this end, the present invention proposes a high-efficiency multi-head automatic winding device for a motor stator. Summary of the invention

[0010] The object of the present invention is to provide a high-efficiency multi-head automatic winding device for a motor stator to solve the problems raised in the above-mentioned background technology.

[0011] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motor stator high-efficiency multi-head automatic winding device, comprising a winding machine, wherein a winding unit and a positioning unit are respectively installed on the outside of the winding machine, wherein the winding unit comprises a plurality of wire reels, each of which is symmetrically and fixedly connected with a camshaft, and an elastic support component is provided on the surface of the winding unit for preventing the copper wire from being subjected to uneven traction force during the winding process, wherein the elastic support component comprises a plurality of top shafts, top springs, side shafts and side springs.

[0012] The top shaft is used to fine-tune the position of the copper wire and make the copper wire evenly stressed when the copper wire is unevenly stressed according to the pressure of the copper wire itself and the elastic force provided by the top spring.

[0013] The side shaft is used to change its contact position with the copper wire through its own guidance and the elastic force provided by the side spring, and further assist the top shaft to make the copper wire evenly stressed.

[0014] Preferably, the elastic support assembly also includes a plurality of top grooves, every two of the top grooves are arranged as a group, each guide plate is provided with a group of top grooves, each top groove is slidably connected to a top block, the top shafts are fixedly connected to the outer surface of the top block, and the fitting clearance between the top block and the top groove is 0.1mm-0.3mm.

[0015] Preferably, a top spring is symmetrically fixedly connected between each top block and the inner wall of the top groove, the cross-section of the top spring is rectangular, and the camshaft and top shaft on each wire reel constitute the four vertices of the rectangle, that is, the camshaft and the top shaft constitute a rectangular structure.

[0016] Preferably, each of the wire reels is provided with side grooves arranged equidistantly in a ring shape, side blocks are slidably connected inside the side grooves, the side shafts are fixedly connected to the outer surfaces of the side blocks, side springs are symmetrically fixedly connected between each side block and the inner wall of the side groove, the fitting clearance between the side grooves and the side blocks is 0.15mm-0.4mm, and the inner walls of the side grooves and the top grooves are provided with polytetrafluoroethylene coatings.

[0017] Preferably, the side springs are all located on the sides of a rectangular structure formed by the camshaft and the top shaft, and the cross-section of the side springs is cylindrical.

[0018] Preferably, an air cooling assembly is provided outside the winding unit, and the air cooling assembly includes a plurality of movement grooves opened on the outer edge of the wire reel, and a plurality of rotating parts are arranged in a ring shape and at equal intervals inside the movement grooves.

[0019] Preferably, the rotating member includes a rotating shaft and outer blades, the rotating shaft is rotatably connected to the inside of the motion groove, the outer blades are fixedly connected to the outer surface of the rotating shaft, and the outer blades are divided into rectangular and twisted shapes, that is, a rectangular outer blade is arranged between every two twisted outer blades.

[0020] Preferably, the air cooling component further comprises a plurality of inner rods which are arranged in a ring shape and are fixedly connected to the wire reel at equal intervals, the outer surfaces of the inner rods are rotatably connected to sleeves, and the outer surface of each sleeve is symmetrically fixedly connected to inner blades.

[0021] Preferably, the inner rods are all inclined, and are inclined 30 degrees away from the center of the guide plate.

[0022] Preferably, a plurality of positioning bases are installed on the surface of the positioning unit, and a snap-fit ​​assembly is provided on the positioning base, and the snap-fit ​​assembly includes a plurality of positioning seats fixedly connected to the bottom of the positioning base, and a convex key is provided on the outer surface of the positioning base. A movable seat is slidably connected to the top of the positioning base, and a convex groove track is fixedly connected to the end where the movable seat and the positioning seat are close to each other.

[0023] Preferably, the winding unit consists of a wire nozzle, a motor, a wire reel, a cam shaft and a cutting knife.

[0024] Preferably, the positioning unit consists of a moving plate, a stator base and a rotating shaft.

[0025] Preferably, both the winding unit and the positioning unit are electrically controlled to be started and shut down by an external controller.

[0026] Compared with the prior art, the beneficial effects of the present invention are: 1. The copper wire is in contact with the camshaft and the top shaft to form a four-point contact method, and under the action of the top spring, the top shaft can also move slightly so as to adaptively adjust the traction force exerted on the copper wire. Specifically, when the camshaft is in motion, due to the cooperation of the top shaft and the top spring, when the camshaft moves to the top point and causes a sudden change in traction force, the top shaft can adaptively adjust its position according to actual conditions, and use the elasticity of the top spring to buffer and balance the change in traction force, thereby avoiding the sudden increase in traction force, thereby significantly reducing the risk of copper wire breakage. In addition, due to the four-point contact and the adaptive adjustment of the top shaft, when the centrifugal force changes, the top shaft can adjust the force on the copper wire as needed, thereby stabilizing the pulling force. For the influence of the gravity component, the combination of the top shaft and the top spring can compensate for the tension fluctuation caused by the change in the gravity component in real time, thereby ensuring the uniformity of the tension, which helps to improve the stability and accuracy of the winding, thereby ensuring the quality of the winding.

[0027] Compared with the existing winding technology, in terms of winding accuracy, the existing technology is seriously affected by the uneven traction force, while the elastic support assembly effectively solves this problem through four-point contact, which can achieve more precise winding and help improve the consistency of motor performance. In terms of the service life of the copper wire, the uneven tension distribution in the traditional technology aggravates the wear of the copper wire, while the elastic support assembly reduces this wear, reduces production costs and maintenance frequency. In terms of winding stability, the elastic support assembly overcomes the problem in the existing technology that it is difficult to ensure winding stability due to the complex influence of multiple forces, making the winding process more stable and reliable.

[0028] Among them: First, the side shaft is located at the edge of the four points, that is, in the middle of two points, which enables it to respond sensitively to changes in the traction of the copper wire. During the winding process, the fluctuation of traction caused by camshaft movement, centrifugal force and gravity force is inevitable. The existence of the side shaft is like an additional buffer. When the traction suddenly increases or decreases, the contact between the copper wire and the side shaft will cause the movement of the side shaft. This movement can effectively disperse and adjust the changes in traction, avoiding excessive stretching or relaxation caused by the concentration of traction at a certain point.

[0029] Among them: From a mechanical point of view, the top spring with a rectangular cross-section exhibits better stability when subjected to greater pressure. During the winding process, the top spring needs to withstand the force transmitted from the top shaft to achieve adaptive adjustment of the traction force of the copper wire. The design of the rectangular cross-section enables the side of the top spring to provide a larger support area during compression and rebound.

[0030] In addition, when subjected to repeated pressure and tension, the top spring with a rectangular cross-section is less likely to experience fatigue crack propagation, which helps to extend the service life of the top spring.

[0031] Among them: In terms of mechanical properties, the side spring with a circular cross-section can disperse stress more evenly when subjected to force in the middle. According to the principles of elastic mechanics, the circle is a geometric shape with the most uniform stress distribution when subjected to force. When the side spring is subjected to force from the copper wire during the winding process, the circular cross-section can ensure that the stress is evenly distributed over the entire cross-section, avoiding stress concentration.

[0032] 2. The heat dissipation efficiency is improved by driving the rotating part to rotate through the rotation of the wire reel. Under the traditional method, the heat generated by the copper wire due to high-speed winding cannot be dissipated in time, while the air-cooling component can actively cool the copper wire. When the wire reel rotates, the rotating part rotates accordingly, and its outer blades generate airflow. The airflow directly acts on the copper wire being wound, taking away the heat in time and avoiding excessive heat accumulation. This helps to improve the working environment of the copper wire and reduce the increase in the resistivity of the copper wire due to increased temperature.

[0033] Among them: the twisted outer blades of the rotating part can generate an airflow with certain vortex characteristics during the rotation process. This vortex airflow has stronger disturbance and diffusion, and can more effectively remove heat from the surface of the copper wire, especially in some areas where heat is concentrated. The vortex airflow can penetrate into these areas and improve the heat dissipation effect.

[0034] The rectangular outer blades play a role in stabilizing and guiding the airflow. While the twisted outer blades generate vortex airflow, the rectangular outer blades can regulate the direction of the airflow to prevent the airflow from being too turbulent and reducing the heat dissipation efficiency. The rectangular outer blades can guide the vortex airflow to the key parts that need heat dissipation, making the heat dissipation more uniform and comprehensive.

[0035] Among them: when the wire reel rotates and drives the inner rod to rotate, the sleeve also rotates accordingly, thereby driving the inner blades to perform circular motion. The shape of the rectangular fan blade enables it to cut the air during rotation, generating a larger airflow pressure difference, thereby forming a stronger air-cooling airflow. This stronger airflow can more effectively blow toward the winding copper wire and take away more heat.

[0036] Among them: the inclined inner rod, sleeve and inner blades can make the generated wind-cooled airflow blow toward the copper wire more specifically. After the inclined setting, the direction of the airflow generated by the inner blades during rotation is more inclined to the winding area of ​​the copper wire, thereby improving the contact efficiency between the airflow and the copper wire.

[0037] In addition, the inclined structure can also enhance the disturbance of the airflow. Due to the inclination of the sleeve and the inner blades, the way they cut the air when rotating changes, causing the airflow to generate more turbulence and vortices when passing through the copper wire. According to the principles of heat transfer, turbulence and vortices can enhance the heat exchange efficiency between the air and the copper wire, further improving the heat dissipation effect and helping to better reduce the heat of the winding.

[0038] 3. When the stator is placed in the positioning base, the insulating sleeve can accurately engage with the convex groove track. The existence of the convex groove track provides a precise positioning reference point for the stator, which helps to ensure the accuracy of the position of the stator in the positioning base. Secondly, the positioning seat serves as a supporting structure for the convex groove track, which ensures the stability of the convex groove track during the positioning process. The stable convex groove track can better cooperate with the insulating sleeve to prevent the stator from shifting during the winding process, thereby improving the stability of the winding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a front perspective schematic diagram of the main structure of the present invention.

[0040] Figure 2 It is a right-side stereoscopic schematic diagram of the main structure of the present invention.

[0041] Figure 3 It is a cross-sectional stereoscopic schematic diagram of the main structure of the present invention.

[0042] Figure 4 For the present invention Figure 3 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0043] Figure 5 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0044] Figure 6 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0045] Figure 7 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point D in the middle.

[0046] Figure 8 It is a partial three-dimensional schematic diagram of the buckling assembly of the present invention.

[0047] Fig. 9 For the present invention Figure 8Enlarged three-dimensional schematic diagram of the structure at E in the middle.

[0048] Fig.10 For the present invention Figure 8 Enlarged three-dimensional schematic diagram of the structure at F in the middle.

[0049] In the figure: 11, winding machine; 12, winding unit; 13, positioning unit.

[0050] 2. Elastic support assembly; 21. Top groove; 22. Top block; 23. Top shaft; 24. Top spring; 25. Side groove; 26. Side block; 27. Side shaft; 28. Side spring.

[0051] 3. Air cooling assembly; 31. Moving groove; 32. Rotating part; 33. Inner rod; 34. Sleeve; 35. Inner blade.

[0052] 4. snap-fit ​​assembly; 41. positioning seat; 42. convex groove track; 43. movable seat. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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 creative work are within the scope of protection of the present invention.

[0054] It should be noted that the winding unit 12 is composed of a wire nozzle, a motor, a wire reel, a camshaft and a cutting knife. The motor provides power to the wire reel and the camshaft. After the wire nozzle outputs the wire, the wire reel rotates to guide the copper wire to the camshaft. The camshaft winds the copper wire onto the stator according to a specific trajectory. After the winding is completed, the cutting knife cuts the copper wire as needed.

[0055] The positioning unit 13 is composed of a movable plate, a stator base and a rotating shaft. The movable plate drives the stator base to move in the horizontal direction to adjust the horizontal position of the stator. At the same time, the rotating shaft rotates the stator base to change the angle of the stator, ensuring that the stator is in a suitable position during the winding process for accurate winding.

[0056] The structures and working principles of the winding unit 12 and the positioning unit 13 belong to the prior art, and thus will not be described in detail later.

[0057] Example 1, please refer to Figures 1 to 4As shown, a high-efficiency multi-head automatic winding device for a motor stator includes a winding machine 11, and a winding unit 12 and a positioning unit 13 are respectively installed on the outside of the winding machine 11. The winding unit 12 includes a plurality of wire reels, each of which is symmetrically and fixedly connected with a camshaft. The surface of the winding unit 12 is provided with an elastic support component 2 for preventing the copper wire from being subjected to uneven traction force during the winding process. The elastic support component 2 includes a plurality of top shafts 23, top springs 24, side shafts 27 and side springs 28.

[0058] The top shaft 23 is used to fine-tune the position of the copper wire according to the pressure of the copper wire itself and the elastic force provided by the top spring 24 when the copper wire is subjected to uneven force, so as to make the force on the copper wire uniform.

[0059] The side shaft 27 is used to change the contact position between itself and the copper wire through its own guidance and the elastic force provided by the side spring 28, and further assist the top shaft 23 to make the copper wire evenly stressed.

[0060] Please refer to Figure 4 and Figure 5 As shown, the elastic support component 2 also includes a plurality of top grooves 21, and every two top grooves 21 are arranged as a group. A group of top grooves 21 is opened on each guide disk, and a top block 22 is slidably connected inside each top groove 21, and a top shaft 23 is fixedly connected to the outer surface of the top block 22. A top spring 24 is symmetrically fixedly connected between each top block 22 and the inner wall of the top groove 21. The camshaft and the top shaft 23 on each wire drum constitute the four vertices of a rectangle, that is, the camshaft and the top shaft 23 constitute a rectangular structure. Side grooves 25 are arranged in a circular and equidistant manner on each wire drum, and side blocks 26 are slidably connected inside the side grooves 25. Side shafts 27 are fixedly connected to the outer surface of the side block 26, and side springs 28 are symmetrically fixedly connected between each side block 26 and the inner wall of the side groove 25.

[0061] It should be noted that the side springs 28 are all located on the edge of the rectangular structure formed by the camshaft and the top shaft 23, the fitting clearance between the top block 22 and the top groove 21 is 0.1mm-0.3mm, the fitting clearance between the side groove 25 and the side block 26 is 0.15mm-0.4mm, the cross-section of the top spring 24 is rectangular, the cross-section of the side spring 28 is cylindrical, the inner walls of the top groove 21 and the side groove 25 are both provided with a polytetrafluoroethylene coating, and the winding unit 12 and the positioning unit 13 are both electrically controlled to start and stop by an external controller.

[0062] Specifically, after the operator places the stator on the positioning unit 13, the winding unit 12 and the positioning unit 13 are started, and the winding unit 12 starts to perform winding operation on the stator.

[0063] During this process, the wire reel and the camshaft drive the copper wire to perform circular motion. During the circular motion, when the copper wire moves to the top position of the camshaft, that is, when the copper wire contacts the camshaft, the copper wire is acted upon by multiple forces, namely, traction, gravity component and centrifugal force. At this time, the copper wire is subjected to uneven force.

[0064] Specifically, the traction force is the force that drives the copper wire to move along a circular path. The gravity component will have different directions and magnitudes at different positions of the circular motion. The centrifugal force is related to the speed and radius of the circular motion. The combined effect of these forces causes the copper wire to be subjected to complex and uneven force at the apex of the camshaft.

[0065] Since the top shaft 23 and the camshaft form a four-point structure, that is, the two top shafts 23 bear the other two vertices in the rectangle, under this structure, when the copper wire is subjected to uneven force, the top shaft 23 can share part of the force, that is, in the case of uneven force at the camshaft vertex before, the existence of the top shaft 23 changes the force distribution pattern, and when the traction force of the copper wire is normal during movement, the entire structure is in a relatively stable force balance state; and when the traction force changes abnormally, the top shaft 23 can play a regulating role: when the traction force increases, the traction force is transmitted to the top shaft 23 through the copper wire, and the resultant force on the top shaft 23 points to the center direction, and the top spring 24 is an elastic component connecting the top block 22 and the inner wall of the top groove 21. According to Hooke's law, when it is subjected to this force pointing to the center, it will produce contraction deformation, thereby pulling the top block 22 to move. This movement helps to adjust the position of the copper wire so that the force on the copper wire becomes uniform again.

[0066] Similarly, when the traction force is too small, the elastic extension of the top spring 24 drives the top shaft 23 to move outward. This is because when the traction force becomes smaller, the pressure of the copper wire on the top shaft 23 decreases, and the direction of the resultant force on the top shaft 23 is outward. The elastic extension force of the top spring 24 can push the top shaft 23 to move outward, thereby adjusting the position of the copper wire and ensuring that the copper wire is evenly stressed.

[0067] In this process, the side shaft 27 plays the role of supporting the edge of the rectangular structure. When the copper wire moves and is wound, the copper wire contacts the surface of the side shaft 27 and exerts pressure on it. When this pressure becomes larger, the side shaft 27 drives the side block 26 to make the side spring 28 undergo elastic deformation. Under the action of its own elasticity, the contact position between the side shaft 27 and the copper wire will change, that is, closer to the front and further back.

[0068] Specifically, when the pressure of the copper wire on the side shaft 27 increases, the resultant force exerted on the side shaft 27 prompts the side block 26 to slide in the side groove 25, thereby compressing the side spring 28. The elastic deformation of the side spring 28 will change the position of the side shaft 27, causing the contact position between the side shaft 27 and the copper wire to change. This change in contact position is of great significance. It can further adjust the stress condition of the copper wire. That is, when the copper wire is subjected to excessive force at a certain local position, part of the force can be dispersed to other positions by changing the contact position between the side shaft 27 and the copper wire, thereby avoiding excessive stress concentration on the copper wire in a local area, thereby ensuring that the copper wire is always subjected to uniform force during the winding process, thereby improving the quality and efficiency of the winding, and at the same time reducing problems such as breakage and deformation of the copper wire caused by uneven force during the winding process, thereby ensuring the stable operation of the motor stator winding device.

[0069] Finally, when the winding is completed, the operator can close the winding unit 12 through the external controller, and rotate the stator base through the positioning unit 13, and finally make the unwound side of the stator face the winding unit 12, and then the winding can continue on the other side of the stator.

[0070] Example 2, based on Example 1, please refer to Figure 4 and Figure 6 as well as Figure 7 As shown, an air cooling assembly 3 is provided on the outside of the winding unit 12, and the air cooling assembly 3 includes a plurality of movement grooves 31 opened on the outer edge of the wire reel, and a plurality of rotating members 32 are arranged in a ring shape and equidistantly inside the movement grooves 31, and the rotating member 32 includes a rotating shaft and outer blades, and the rotating shaft is rotatably connected to the inside of the movement grooves 31. The air cooling assembly 3 also includes a plurality of inner rods 33 arranged in a ring shape and equidistantly fixedly connected to the wire reel, and the outer surfaces of the inner rods 33 are rotatably connected to sleeves 34, and the outer surfaces of each sleeve 34 are symmetrically fixedly connected to inner blades 35.

[0071] It should be noted that the outer blades are fixedly connected to the outer surface of the rotating shaft, and the outer blades are divided into rectangular and twisted shapes, that is, a rectangular outer blade is arranged between every two twisted outer blades.

[0072] Specifically, in Example 1, the wire reel starts to rotate and winds the stator. As the copper wire is continuously wound on the stator, the copper wire itself is continuously deformed during the winding process. According to the principles of material mechanics, when the material is deformed, the lattice structure inside the material will change. This change will cause the interaction between atoms to change, thereby converting part of the mechanical energy into heat energy, which causes the copper wire to heat up.

[0073] During the rotation of the wire reel, the rotating member 32 inside the motion groove 31 is driven to rotate based on centrifugal force, and the outer blades of the rotating member 32 are divided into rectangular and twisted shapes, and a rectangular outer blade is arranged between every two twisted outer blades. Therefore, when the rotating member 32 rotates, the twisted blades and the rectangular blades have different shapes and interact with the air in different ways during the rotation process. When the twisted blades rotate, their special shape can cause complex airflow changes when the air flows through the blades. It can generate an oblique thrust on the air, so that the air forms a spiral airflow trajectory when being pushed, while the rectangular blades have a more direct pushing effect on the air during the rotation process, forming a more regular airflow direction.

[0074] When these two types of blades are arranged alternately, the airflows they generate overlap and complement each other. When cooling the copper wire part on the stator, this composite airflow can cover the winding part more comprehensively. The spiral airflow generated by the twisted blades can penetrate into the gaps in the winding and bring out the heat, while the regular airflow generated by the rectangular blades can blow over a large area of ​​the winding surface and accelerate the dissipation of heat.

[0075] Secondly, the inner rod 33 on the surface of the wire reel will drive the sleeve 34 and the inner blades 35 thereon to rotate. Since the inner rod 33 is tilted away from the center of the guide disk, when the inner rod 33 rotates with the wire reel, this tilted structure causes the sleeve 34 and the inner blades 35 to change the way they contact the air during rotation. Similarly, based on the centrifugal force, when the sleeve 34 and the inner blades 35 rotate, due to the tilt of the inner rod 33, they will cut into the air at an inclined angle, which causes them to exert an oblique force on the air during rotation, thereby causing the air to form a specific flow direction.

[0076] The airflow generated by the inclined structure cooperates with the airflow generated by the rotation of the rotating part 32 to cool the stator winding part. Specifically, the airflow generated by the sleeve 34 and the inner blades 35 can fill the blank area where the airflow is generated by the rotating part 32. For example, in certain corners of the winding part or areas close to the edge of the stator, the airflow generated by the rotating part 32 cannot fully cover the area, while the airflow generated by the sleeve 34 and the inner blades 35 can reach these areas. At the same time, the airflow generated by the sleeve 34 and the inner blades 35 intersects and mixes with the airflow generated by the rotating part 32, making the overall airflow more turbulent. This turbulent airflow can better break the hot air layer around the winding part and improve the efficiency of heat exchange, thereby more effectively cooling the copper wire part on the stator, ensuring that the temperature of the copper wire is appropriate, and reducing various problems caused by overheating.

[0077] It should be noted that the inner rods 33 are all inclined, and are inclined 30 degrees away from the center of the guide plate.

[0078] Example 3, based on Example 1 and Example 2, please refer to Figures 8 to 10 As shown, a plurality of positioning bases are installed on the surface of the positioning unit 13, and a snap-fit ​​assembly 4 is provided on each of the positioning bases. The snap-fit ​​assembly 4 includes a plurality of positioning seats 41 fixedly connected to the bottom of the positioning base, and convex keys are provided on the outer surface of the positioning base. A movable seat 43 is slidably connected to the top of the positioning base, and a convex groove rail 42 is fixedly connected to the end where the movable seat 43 and the positioning seat 41 are close to each other.

[0079] Specifically, when the stator needs to be placed on the stator base, the operator first removes the movable seat 43. At this time, the space on the positioning base is opened to place the stator. Since the insulating ring needs to be assembled before the stator is wound, and the insulating ring is a sheet structure, this structural feature makes it possible to use the snap-fit ​​assembly 4 to accurately place the stator and the insulating ring.

[0080] Specifically, after the operator places the stator into the positioning base, the bottom edge of the insulating ring is aligned and placed into the convex groove track 42. The convex groove track 42 is located at one end where the positioning seat 41 and the slidable movable seat 43 at the bottom of the positioning base are close to each other. Its position and structural design facilitate cooperation with the edge of the insulating ring.

[0081] Then, the operator buckles the movable seat 43 again. During the buckling process, the convex groove track 42 at the bottom of the movable seat 43 will buckle with the top edge of the insulating ring. This buckling method has significant advantages. On the one hand, through this clear buckling feature, the operator can quickly and accurately complete the placement of the stator and the insulating ring, greatly reducing the adjustment amount. On the other hand, this buckling structure effectively positions the stator, avoiding the stator position from deviating from the predetermined position due to operator errors.

[0082] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0083] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency multi-head automatic winding device for a motor stator, comprising a winding machine (11), a winding unit (12) and a positioning unit (13) being respectively installed outside the winding machine (11), the winding unit (12) comprising a plurality of wire reels, each of which is symmetrically fixedly connected to a camshaft, characterized in that: The surface of the winding unit (12) is provided with an elastic support component (2) for preventing the copper wire from being subjected to uneven traction during the winding process, and the elastic support component (2) comprises a plurality of top shafts (23), top springs (24), side shafts (27) and side springs (28); the top shaft (23) is used to fine-tune the position of the copper wire according to the pressure of the copper wire itself and the elastic force provided by the top spring (24) when the copper wire is subjected to uneven force, and to make the force on the copper wire uniform; the side shaft (27) is used to change its contact position with the copper wire through its own guidance and the elastic force provided by the side spring (28), and further assist the top shaft (23) to make the force on the copper wire uniform; An air cooling assembly (3) is arranged outside the winding unit (12), the air cooling assembly (3) comprising a plurality of movement grooves (31) opened at the outer edge of the wire reel, and a plurality of rotating parts (32) are arranged in an annular shape and at equal intervals inside the movement grooves (31); The rotating member (32) comprises a rotating shaft and outer blades, the rotating shaft being rotatably connected to the inside of the motion groove (31), the outer blades being fixedly connected to the outer surface of the rotating shaft, and the outer blades are divided into rectangular and twisted shapes, and a rectangular outer blade is arranged between every two twisted outer blades.

2. The motor stator high-efficiency multi-head automatic winding device according to claim 1 is characterized in that: The elastic support assembly (2) further comprises a plurality of top grooves (21), wherein every two of the top grooves (21) are arranged as a group, each guide plate is provided with a group of top grooves (21), each top groove (21) is slidably connected to a top block (22) inside, the top shaft (23) is fixedly connected to the outer surface of the top block (22), and the matching clearance between the top block (22) and the top groove (21) is 0.1 mm-0.3 mm.

3. The motor stator high-efficiency multi-head automatic winding device according to claim 2 is characterized in that: A top spring (24) is symmetrically fixedly connected between each top block (22) and the inner wall of the top groove (21); the cross section of the top spring (24) is rectangular, and the cam shaft and the top shaft (23) on each wire reel form four vertices of the rectangle.

4. The motor stator high-efficiency multi-head automatic winding device according to claim 1 is characterized in that: Each of the wire reels is provided with side grooves (25) arranged in an annular manner and at equal intervals. A side block (26) is slidably connected inside the side grooves (25). The side shafts (27) are fixedly connected to the outer surface of the side block (26). A side spring (28) is symmetrically fixedly connected between each side block (26) and the inner wall of the side groove (25). The matching clearance between the side groove (25) and the side block (26) is 0.15 mm-0.4 mm. The inner walls of the side grooves (25) and the top groove (21) are provided with a polytetrafluoroethylene coating.

5. The motor stator high-efficiency multi-head automatic winding device according to claim 4 is characterized in that: The side springs (28) are all located on the sides of a rectangular structure formed by the camshaft and the top shaft (23), and the cross section of the side springs (28) is cylindrical.

6. The motor stator high-efficiency multi-head automatic winding device according to claim 1 is characterized in that: The air cooling assembly (3) further comprises a plurality of inner rods (33) arranged in an annular shape and fixedly connected to the wire reel at equal intervals, the outer surfaces of the inner rods (33) being rotatably connected to sleeves (34), and the outer surface of each sleeve (34) being symmetrically fixedly connected to inner blades (35).

7. The motor stator high-efficiency multi-head automatic winding device according to claim 6 is characterized in that: The inner rods (33) are all arranged to be inclined, and are inclined 30 degrees away from the center of the guide plate.

8. The motor stator high-efficiency multi-head automatic winding device according to claim 1 is characterized in that: A plurality of positioning bases are mounted on the surface of the positioning unit (13), each of the positioning bases being provided with a snap-fit ​​assembly (4), the snap-fit ​​assembly (4) comprising a plurality of positioning seats (41) fixedly connected to the bottom of the positioning base, each of the positioning bases being provided with a convex key on its outer surface, each of the positioning bases being slidably connected to a movable seat (43) at the top, and each of the movable seats (43) and the positioning seat (41) being fixedly connected to a convex groove track (42) at one end thereof close to each other.

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