Stator sheet stacking and dispensing device

Abstract

The application discloses a stator sheet whole stacking discharging device, relates to the technical field of stator sheet production and processing, and comprises a conveying and stacking unit, a scattering prevention unit, a material taking and stacking deviation prevention unit and a discharging unit. The conveying and stacking unit is used for conveying stator sheets and stacking the stator sheets to a specified area. The material taking and stacking deviation prevention unit is used for preventing the stator sheets from being deviated and scattered. The discharging unit is used for conveying the whole stacked stator sheets. After the stator sheets are placed in the specified area one by one through the conveying and stacking unit, the scattering prevention unit is used for preventing the stator sheets from being deviated and scattered during the stacking process. The material taking and stacking deviation prevention unit is used for preventing the stator sheets from being deviated during the material taking process. Finally, the whole stacked stator sheets are stably conveyed to the next process through the discharging unit, so that the stator sheet production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stator sheet production and processing, and specifically to a stator sheet stacking and discharging device. Background Art

[0002] Transportation or storage devices supporting the manufacturing of electric vehicle complete vehicles, including various workshop material conveying, temporary storage and transfer equipment such as workshop conveyor systems, are key supporting equipment for the intelligent and automated production and transfer of the core components of complete vehicles. They directly ensure the production accuracy and transfer stability of core components such as motors, chassis, and bodies. During the stamping production process of stator silicon steel sheets for electric vehicle motors, after the stator sheets are blanked, they need to complete automatic stacking and stacking and discharging at the discharging station, and then transfer to the next pressing and winding processes. Conventional stacking and discharging devices in the current industry mostly adopt a structural form with fixed support rods for support and fixed retaining rings for limiting. Although they can achieve the basic functions of laminating and discharging, in actual production applications, there are still many technical pain points that are difficult to solve, directly affecting the quality of stator laminations and production stability.

[0003] Currently, most anti-scattering retaining rings are of a fixed structure, and their height cannot change synchronously with the height of the stator stack. In the initial stage of lamination, the height of the retaining ring is too high, which is easy to rub against the falling stator sheets, resulting in damage to the edges of the silicon steel sheets and peeling of the insulation layer, affecting the performance of the motor. As the lamination height gradually increases, the height of the fixed retaining ring cannot completely cover the entire stack of stators, especially for thin silicon steel sheets with easily warped edges. Under the action of gravity and vibration, they are extremely easy to scatter outward, causing material scattering, sheet dropping, and even equipment jamming. At the same time, the fixed retaining ring cannot perform real-time constraint on the small deviations during the lamination process. The stator sheets are prone to radial offset or circumferential misalignment due to uneven stress and vibration interference during the stacking process, forming lamination deviation. This deviation is difficult to detect in the initial stage and will ultimately lead to uneven end faces of the entire stack of stators and excessive deviation of the inner hole coaxiality, directly affecting the assembly accuracy of the subsequent pressing process and seriously causing stator scrapping, increasing production costs.

[0004] Therefore, in view of the core requirements of anti-scattering and anti-lamination deviation in the processes of stator sheet stacking and discharging, temporary storage, and transfer in the workshop conveyor system of electric vehicle complete vehicle manufacturing, it is urgently necessary to develop a new type of conveying and storage limiting structure that can dynamically and synchronously adjust the limiting height following the height of the stator stack and fully and real-time constrain the lamination posture throughout the process, effectively improving the forming quality of motor stator laminations, ensuring the stable operation of workshop conveying equipment, and facilitating the high-efficiency and high-precision mass production of the core components of electric vehicle complete vehicles. Summary of the Invention

[0005] The technical problem to be solved by the present invention is the problem of anti-lamination deviation and anti-scattering of stator sheets, and a stator sheet stacking and discharging device is provided.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A stator sheet stacking and unloading device, characterized in that: the stator sheet stacking and unloading device includes a conveying and stacking unit, the conveying and stacking unit is equipped with a controller, and the conveying and stacking unit is composed of a conveying component and a stacking component; A material scattering prevention unit is provided on one side of the conveying and stacking unit. The material scattering prevention unit includes a material scattering prevention component. The material scattering prevention component prevents stator laminations from scattering by changing its height. The material scattering prevention component includes a support member and a material scattering prevention component. The anti-scattering unit is equipped with a material picking and anti-overlapping unit, which includes a material picking and anti-overlapping component. The material picking and anti-overlapping component corrects the stator laminations by changing the angle to prevent overlapping. The material picking and anti-overlapping component includes a picking component, a centering component, and a holding component, with the centering component and the holding component fixedly connected. The anti-scattering unit is equipped with a feeding unit. The controller receives signals and feedback to control the coordinated operation of the support, anti-scattering components, and material handling components. Existing anti-scattering structures are mostly of fixed height, which can easily lead to insufficient restraint and warping of loose pieces. Furthermore, during material handling, they are susceptible to vibration and impact, causing radial and circumferential misalignment. This invention, through a height-adjustable anti-scattering component, achieves zero-scratching and piece-dropping during stacking, effectively preventing material spillage. Combined with an angle-driven centering and holding structure, it achieves automatic correction and secure positioning during material handling, preventing stacking misalignment from the outset.

[0007] Furthermore, the centering component includes a drive motor, a rotating wheel, an elastic telescopic rod, a push rod, and a centering block. The output end of the drive motor is fixedly connected to the rotating wheel. The rotating wheel consists of multiple spaced-apart protruding and recessed sections. The fixed end of the elastic telescopic rod is fixedly installed on the fixed end of the drive motor. The telescopic end of the elastic telescopic rod is fixedly connected to the centering block. One end of the push rod is fixedly connected to the centering block, and the other end of the push rod abuts against the rotating wheel. In the prior art, the centering of the stator inner ring is mostly done manually or at a single point, resulting in uneven force and insufficient precision, which easily causes the inner hole coaxiality to exceed the standard. This invention achieves rapid and accurate centering of the stator inner ring by using a rotating wheel to drive multi-point synchronous radial pushing, ensuring that the inner hole coaxiality meets the standard.

[0008] Furthermore, the retaining component includes a bent rod, a return spring, a pull rope, a magnet, and a magnetic plate. A pressure plate is provided at the end of the bent rod away from the centering block. The bent rod is slidably connected to the centering block. The bent rod is connected to the centering block via the return spring. The bent rod is connected to the magnet via the pull rope. A through groove is provided on the protruding section of the rotating wheel. The magnet is connected to the through groove via a spring. The magnetic plate is fixedly connected to the telescopic end of the elastic telescopic rod via a straight rod. The magnet and the magnetic plate have opposite magnetic properties. In the prior art, the calibrated stacked pieces are easily displaced secondary due to vibration during transport, lacking reliable axial clamping. This invention uses magnetic attraction and pull rope linkage to drive the pressure plate for clamping, achieving locking of the calibrated stacked piece shape and preventing secondary displacement.

[0009] Furthermore, the material handling component includes a support plate, a guide rail, and a telescopic motor. The support plate is fixedly connected to the fixed end of the telescopic motor, and the guide rail is provided on the support plate. The fixed end of the drive motor is fixedly mounted on the support plate, and the centering block is slidably mounted within the guide rail. In the prior art, uneven material handling support surfaces and unstable guidance can easily lead to tilting of the stacked sheets. This invention achieves stable support of the stacked sheets and reliable guidance for the centering action through guide rail guidance and precise lifting and lowering of the telescopic motor.

[0010] Furthermore, the anti-scattering component includes a slider, a long rod, a column, a clamping plate, an elastic telescopic box, a telescopic plate, and a memory spring. The slider is fixedly connected to the long rod, and there are two long rods, both of which are rotatably connected to the column. The long rod is fixedly connected to the clamping plate, and the clamping plate is flexible near the stator end. The clamping plate abuts against the elastic telescopic box, and the end of the elastic telescopic box near the clamping plate is the telescopic end. The elastic telescopic box is filled with liquid. The fixed end of the telescopic plate is electrically connected to the elastic telescopic box, and the telescopic plate has a hollow structure. The two long rods are connected near the slider end by a memory spring, and the end of the elastic telescopic box near the stator end is flexible. In the prior art, the height of the limiting retaining ring is fixed, which is prone to scratching the scattered pieces or incomplete constraint. This invention achieves continuous circumferential flexible constraint by using a liquid-driven telescopic plate that rises synchronously with the stack height, protecting the edges of the scattered pieces and preventing warping of the scattered materials.

[0011] Furthermore, the support component includes an electric telescopic rod, a fixed ring, a bent plate, and a support frame. The fixed end of the electric telescopic rod is fixedly mounted on the fixed ring, and the telescopic end of the electric telescopic rod abuts against the bottom surface of the stator. The fixed ring is connected to the support frame via the bent plate, the slider is slidably connected to the fixed ring, and the elastic telescopic box is connected to the fixed ring via a connecting rod. A thin-film pressure sensor is provided on the telescopic end of the electric telescopic rod. In the prior art, the stacked sheet support height is not adjustable and the weight is not monitored, which easily leads to inaccurate stacking thickness and overload tipping. This invention achieves precise control of the stacked sheet height and stable support through real-time pressure detection and adaptive support of the electric telescopic rod.

[0012] Furthermore, the conveying component includes a frame, a transverse rod, and a drive module. The transverse rod is mounted on the frame, and the drive module is mounted on the transverse rod.

[0013] Furthermore, the stacking component includes an inner support rod assembly and a lifting claw, the drive module is provided with the inner support rod assembly, and the drive module is provided with the lifting claw.

[0014] Furthermore, the feeding unit includes a conveying plate and a baffle, the conveying plate is slidably connected to the support frame, and the baffle is provided on the conveying plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, when the stator laminations reach a preset stacking quantity and are stacked, first controls the telescopic motor to extend, moving the support plate upwards to a specified height. This ensures the top surface of the support plate precisely supports the inner edge of the stacked stator laminations, providing reliable support for the entire stack and laying the foundation for subsequent correction actions. Then, the controller controls the drive motor to rotate 90 degrees, causing a coaxially fixed wheel to deflect synchronously. When the wheel deflects to a specified angle, its protruding section presses against a push rod that abuts its end face. Under this force, the push rod pushes the centering block to slide outwards along the guide rail. Multiple sets of centering blocks simultaneously apply a uniform radial force from the inner ring of the stator outwards, precisely correcting any minor circumferential misalignment and radial offset that may remain during stacking. This ensures that the coaxiality of the inner hole and the flatness of the end face of the entire stacked stator meet the assembly requirements of subsequent processes. As the centering block slides outward, the telescopic end of the elastic telescopic rod is stretched, causing the magnetic plate to move outward synchronously, so that the magnetic plate is exactly below the through groove on the protruding section of the rotating wheel. At the same time, the rotating wheel pulls the pull rope during rotation, and the transmission action of the pull rope drives the bent rod to compress the return spring and move downward. In addition, the magnetic polarity of the magnetic plate and the magnetic block is opposite, and the magnetic plate will generate a downward magnetic attraction force on the magnetic block, causing the magnetic block to overcome the elastic force of the return spring in the through groove and move downward. This further pulls the bent rod downward through the pull rope, and finally makes the pressure plate at the end of the bent rod fit tightly against the top surface of the stack of stator laminations. The uniform axial pressure applied by the pressure plate can firmly press and fix the corrected stator laminations, effectively preventing secondary displacement or scattering of stator laminations due to equipment vibration and inertial impact during subsequent feeding, and ensuring the morphological stability of the stack of stators.

[0016] 2. This invention involves the accumulation of stator laminations one by one on the telescopic end of an electric telescopic rod, with the stacking height continuously increasing. A thin-film pressure sensor on the telescopic end of the electric telescopic rod continuously detects the pressure value corresponding to the total weight of the stacked laminations and feeds the pressure signal back to the controller. Based on the pressure gradient, the controller gradually increases the current flowing through the memory spring. When energized, the memory spring contracts, causing the sliders to move closer together within the groove of the fixed ring. As the sliders move, they drive a rigidly connected long rod to rotate around a fixed axis around the column. The other end of the long rod then pushes a clamping plate inwards towards the stator, squeezing the elastic telescopic box. Under the squeezing action of the clamping plate, the liquid inside the box is forced into the hollow telescopic plate that is connected to it. The pressure of the liquid... The force pushes the telescopic end of the telescopic plate upward, causing the height of the telescopic plate to rise synchronously with the height of the stator laminations. The controller precisely adjusts the current to ensure that the top of the telescopic plate is always slightly higher than the total thickness of the current stator laminations. Throughout the stacking process, the telescopic plate, which rises with the movement, can form a continuous circumferential constraint on the edges of the stator laminations. This avoids the problems of silicon steel sheet edge scraping and insulation layer peeling caused by the fixed retaining ring being too high in the early stage of stacking, and also solves the problems of warping and scattering of thin silicon steel sheets and sheet drop jamming caused by insufficient retaining ring height in the later stage of stacking. At the same time, the cooperation between the flexible clamp and the telescopic plate can also limit the slight radial displacement generated during the lamination process in real time, reducing the occurrence of lamination skew from the root. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the anti-scattering unit, the material handling and anti-overlapping unit, and the unloading unit of the present invention; Figure 3 This is a schematic diagram of the external structure of the drive module, inner support rod assembly, and lifting claw of the present invention; Figure 4 This is a schematic diagram of the external structure of part of the anti-scattering unit of the present invention; Figure 5 for Figure 4 A partial enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the external structure of part of the material handling and anti-overlap unit of the present invention; Figure 7 This is a schematic diagram of the installation position of the elastic telescopic rod and the magnetic plate of the present invention; Figure 8 This is a schematic diagram of the internal structure of the centering block of the present invention.

[0018] In the diagram: 1. Conveying and stacking unit; 11. Frame; 12. Transverse rod; 13. Drive module; 14. Internal support rod assembly; 15. Lifting claw; 2. Anti-scattering unit; 21. Slider; 22. Long rod; 23. Column; 24. Clamping plate; 25. Elastic telescopic box; 26. Telescopic plate; 27. Memory spring; 28. Electric telescopic rod; 29. ​​Fixing ring; 210. Bending plate; 211. Support frame; 3. Material handling and anti-overlapping unit; 31. Drive motor; 32. Rotary wheel; 33. Elastic telescopic rod; 34. Push rod; 35. Centering block; 36. Bending rod; 37. Return spring; 38. Pull rope; 39. Magnetic block; 310. Magnetic plate; 311. Support plate; 312. Guide rail; 313. Telescopic motor; 4. Unloading unit; 41. Conveying plate; 42. Stop column. Detailed Implementation

[0019] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example: Figures 1-8 As shown, the present invention provides the following technical solution: like Figure 1 , Figure 2 As shown, a stator sheet stacking and unloading device is characterized in that: the stator sheet stacking and unloading device includes a conveying and stacking unit 1, a controller is provided on the conveying and stacking unit 1, and the conveying and stacking unit 1 is composed of a conveying component and a stacking component; An anti-scattering unit 2 is provided on one side of the conveying and stacking unit 1. The anti-scattering unit 2 includes an anti-scattering component. The anti-scattering component prevents the stator laminations from scattering by changing the height. The anti-scattering component includes a support member and an anti-scattering member. The anti-scattering unit 2 is equipped with a material picking and anti-overlapping unit 3. The material picking and anti-overlapping unit 3 includes a material picking and anti-overlapping component. The material picking and anti-overlapping component corrects the stator laminations by changing the angle to prevent overlapping. The material picking and anti-overlapping component includes a picking component, a centering component and a holding component. The centering component and the holding component are fixedly connected. The anti-scattering unit 2 is equipped with a feeding unit 4. The controller controls the support, anti-scattering component and material handling component to work together by receiving signals and feedback.

[0021] like Figures 6-8 As shown, the centering component includes a drive motor 31, a rotating wheel 32, an elastic telescopic rod 33, a push rod 34, and a centering block 35. The output end of the drive motor 31 is fixedly connected to the rotating wheel 32. The rotating wheel 32 is composed of multiple protruding and recessed sections spaced apart. The fixed end of the elastic telescopic rod 33 is fixedly installed on the fixed end of the drive motor 31. The telescopic end of the elastic telescopic rod 33 is fixedly connected to the centering block 35. One end of the push rod 34 is fixedly connected to the centering block 35, and the other end of the push rod 34 abuts against the rotating wheel 32.

[0022] like Figures 6-8 As shown, the retaining component includes a bent rod 36, a return spring 37, a pull rope 38, a magnet 39, and a magnetic plate 310. A pressure plate is provided at the end of the bent rod 36 away from the centering block 35. The bent rod 36 is slidably connected to the centering block 35. The bent rod 36 is connected to the centering block 35 through the return spring 37. The bent rod 36 is connected to the magnet 39 through the pull rope 38. A through groove is provided on the protruding section of the rotating wheel 32. The magnet 39 is connected to the through groove through a spring. The magnetic plate 310 is fixedly connected to the telescopic end of the elastic telescopic rod 33 through a straight rod. The magnet 39 and the magnetic plate 310 have opposite magnetic properties.

[0023] like Figure 2 , Figure 6 As shown, the material handling component includes a support plate 311, a guide rail 312, and a telescopic motor 313. The support plate 311 and the fixed end of the telescopic motor 313 are fixedly connected. The guide rail 312 is provided on the support plate 311. The fixed end of the drive motor 31 is fixedly installed on the support plate 311. The centering block 35 is slidably installed in the guide rail 312.

[0024] When the stator laminations reach the preset stacking quantity and the entire stack is completed, the controller first controls the telescopic motor 313 to extend, driving the support plate 311 to move upward to the specified height. This ensures that the top surface of the support plate 311 precisely supports the inner edge of the entire stack of stator laminations, providing reliable support for the entire stack and laying the foundation for subsequent correction actions. Then, the controller controls the drive motor 31 to rotate 90 degrees, causing the coaxially fixed roller 32 to deflect synchronously. When the roller 32 deflects to the specified angle, its protruding section presses against the push rod 34, which is in contact with its end face. Under this force, the push rod 34 pushes the centering block 35 to slide outward along the guide rail 312. Multiple sets of centering blocks 35 simultaneously apply a uniform radial force from the inner ring of the stator outward, precisely correcting any minor circumferential misalignment and radial offset that may remain during the stacking process. This ensures that the coaxiality of the inner hole and the flatness of the end face of the entire stack of stators meet the assembly requirements of subsequent processes. As the centering blocks 35 slide outward... Simultaneously, the telescopic end of the elastic telescopic rod 33 is stretched, causing the magnetic plate 310 to move outward synchronously, so that the magnetic plate 310 is exactly below the through groove on the protruding section of the rotating wheel 32. At the same time, the rotating wheel 32 pulls the pull rope 38 during rotation. Through the transmission action of the pull rope 38, the bent rod 36 compresses the return spring 37 and moves downward. In addition, the magnetic polarity of the magnetic plate 310 and the magnetic block 39 are opposite, so the magnetic plate 310 will generate a downward magnetic attraction force on the magnetic block 39, causing the magnetic block 39 to overcome the elastic force of the return spring 37 in the through groove and move downward. Furthermore, the pull rope 38 pulls the bent rod 36 downward, so that the pressure plate at the end of the bent rod 36 is tightly attached to the top surface of the stack of stator laminations. The uniform axial pressure applied by the pressure plate can firmly press and fix the corrected stator laminations, effectively preventing secondary displacement or scattering of stator laminations due to equipment vibration and inertial impact during subsequent feeding, and ensuring the morphological stability of the stack of stators.

[0025] like Figure 5 As shown, the anti-scattering components include a slider 21, a long rod 22, a column 23, a clamping plate 24, an elastic telescopic box 25, a telescopic plate 26, and a memory spring 27. The slider 21 is fixedly connected to the long rod 22. There are two long rods 22, and both long rods 22 are rotatably connected to the column 23. The long rods 22 are fixedly connected to the clamping plate 24. The clamping plate 24 is flexible near the stator end. The clamping plate 24 abuts against the elastic telescopic box 25. The end of the elastic telescopic box 25 near the clamping plate 24 is the telescopic end. The elastic telescopic box 25 is filled with liquid. The fixed end of the telescopic plate 26 is electrically connected to the elastic telescopic box 25. The telescopic plate 26 has a hollow structure. The ends of the two long rods near the slider 21 are connected by the memory spring 27. The end of the elastic telescopic box 25 near the stator is flexible.

[0026] like Figure 2 , Figure 4 As shown, the support includes an electric telescopic rod 28, a fixed ring 29, a bent plate 210, and a support frame 211. The fixed end of the electric telescopic rod 28 is fixedly installed on the fixed ring 29, and the telescopic end of the electric telescopic rod 28 abuts against the bottom surface of the stator. The fixed ring 29 is connected to the support frame 211 through the bent plate 210. The slider 21 is slidably connected to the fixed ring 29. The elastic telescopic box 25 is connected to the fixed ring 29 through a connecting rod. A thin-film pressure sensor is provided on the telescopic end of the electric telescopic rod 28.

[0027] As stator laminations accumulate one by one on the telescopic end of the electric telescopic rod 28, the stacking height continuously increases. The thin-plate pressure sensor on the telescopic end of the electric telescopic rod 28 detects the pressure value corresponding to the total weight of the stacked laminations in real time and continuously feeds the pressure signal back to the controller. According to the pressure change gradient, the controller gradually increases the current flowing into the memory spring 27. After being energized, the memory spring 27 contracts and deforms, causing the sliders 21 to move closer to each other in the groove of the fixed ring 29. When the sliders 21 move, they drive the rigidly connected long rod 22 to rotate around the column 23. The other end of the long rod 22 then pushes the clamping plate 24 to squeeze the elastic telescopic box 25 inward towards the stator. After being squeezed by the clamping plate 24, the liquid inside the box is forced into the hollow telescopic plate 26 that is connected to it. The pressure of the liquid pushes the telescopic end of the telescopic plate 26 upward, causing the height of the telescopic plate 26 to rise synchronously with the height of the stator laminations. The controller precisely controls the current to ensure that the top of the telescopic plate 26 is always slightly higher than the total thickness of the current stator laminations. Throughout the stacking process, the telescopic plate 26, which rises with the movement, can form a continuous circumferential constraint on the edges of the stator laminations. This avoids the problems of silicon steel sheet edge scraping and insulation layer falling off caused by the fixed retaining ring being too high in the early stage of stacking, and also solves the problems of warping and scattering of thin silicon steel sheets and sheet falling off and jamming caused by insufficient retaining ring height in the later stage of stacking. At the same time, the cooperation between the flexible clamping plate 24 and the telescopic plate 26 can also limit the small radial displacement generated during the lamination process in real time, reducing the occurrence of lamination skew from the root.

[0028] like Figure 1 , Figure 3 As shown, the conveying component includes a frame 11, a transverse rod 12, and a drive module 13. The transverse rod 12 is mounted on the frame 11, and the drive module 13 is mounted on the transverse rod 12.

[0029] like Figure 3 As shown, the stacking component includes an inner support rod assembly 14 and a lifting claw 15. The inner support rod assembly 14 is provided on the drive module 13, and the lifting claw 15 is provided on the drive module 13.

[0030] The inner support rod assembly 14 first aligns with the inner ring of a single stator lamination and expands to complete the initial gripping of the lamination. Then, driven by the drive module 13, it moves upward as a whole. The lifting claw 15, under the precise control of the drive module 13, moves horizontally to the bottom of the stator lamination and steadily lifts the lamination. The drive module 13 is powered by an external driver and moves horizontally back and forth along the transverse rod 12 to accurately place the gripped stator lamination onto the telescopic end of the pre-extended electric telescopic rod 28. At this time, the telescopic end of the electric telescopic rod 28 just supports the outer edge of the stator lamination, providing a stable support reference for subsequent stacking.

[0031] like Figure 2 As shown, the feeding unit 4 includes a conveying plate 41 and a baffle 42. The conveying plate 41 is slidably connected to the support frame 211, and the baffle 42 is provided on the conveying plate 41.

[0032] After the stator laminations are aligned and fixed at the top, the controller controls the telescopic end of the electric telescopic rod 28 to retract downwards, releasing the support for the bottom outer edge of the stack of stator laminations. Subsequently, the controller controls the telescopic motor 313 to retract downwards, driving the support plate 311 and the stack of stator laminations to descend smoothly to the preset unloading height. During the descent, the outer edge of the stack of stator laminations will land smoothly on the conveyor plate 41. The baffles 42 set on the conveyor plate 41 will assist in centering the stator laminations from the outside, further correcting any minor positional deviations that may occur during the descent. Finally, the drive motor 31 rotates 90 degrees in the opposite direction, resetting the components to fix the stack of stator laminations. Under the traction of the external drive, the conveyor plate 41 slides smoothly along the guide groove of the support frame 211, accurately conveying the stack of stator laminations to the next pressing or winding process, completing the entire automated stacking and unloading process of the stator laminations.

[0033] Working principle of the invention: As stator laminations accumulate one by one on the telescopic end of the electric telescopic rod 28, the stacking height continuously increases. The thin-plate pressure sensor on the telescopic end of the electric telescopic rod 28 detects the pressure value corresponding to the total weight of the stacked laminations in real time and continuously feeds the pressure signal back to the controller. According to the pressure change gradient, the controller gradually increases the current flowing into the memory spring 27. After being energized, the memory spring 27 contracts and deforms, causing the sliders 21 to move closer to each other in the groove of the fixed ring 29. When the sliders 21 move, they drive the rigidly connected long rod 22 to rotate around the column 23. The other end of the long rod 22 then pushes the clamping plate 24 to squeeze the elastic telescopic box 25 inward towards the stator. After being squeezed by the clamping plate 24, the liquid inside the box is forced into the hollow telescopic plate 26 that is connected to it. The pressure of the liquid pushes the telescopic end of the telescopic plate 26 upward, causing the height of the telescopic plate 26 to rise synchronously with the height of the stator laminations. The controller precisely controls the current to ensure that the top of the telescopic plate 26 is always slightly higher than the total thickness of the current stator laminations. Throughout the stacking process, the telescopic plate 26, which rises with the movement, can form a continuous circumferential constraint on the edges of the stator laminations. This avoids the problems of silicon steel sheet edge scraping and insulation layer falling off caused by the fixed retaining ring being too high in the early stage of stacking, and also solves the problems of warping and scattering of thin silicon steel sheets and sheet falling off and jamming caused by insufficient retaining ring height in the later stage of stacking. At the same time, the cooperation between the flexible clamping plate 24 and the telescopic plate 26 can also limit the small radial displacement generated during the lamination process in real time, reducing the occurrence of lamination skew from the root.

[0034] When the stator laminations reach the preset stacking quantity and the entire stack is completed, the controller first controls the telescopic motor 313 to extend, driving the support plate 311 to move upward to the specified height. This ensures that the top surface of the support plate 311 precisely supports the inner edge of the entire stack of stator laminations, providing reliable support for the entire stack and laying the foundation for subsequent correction actions. Then, the controller controls the drive motor 31 to rotate 90 degrees, causing the coaxially fixed roller 32 to deflect synchronously. When the roller 32 deflects to the specified angle, its protruding section presses against the push rod 34, which is in contact with its end face. Under this force, the push rod 34 pushes the centering block 35 to slide outward along the guide rail 312. Multiple sets of centering blocks 35 simultaneously apply a uniform radial force from the inner ring of the stator outward, precisely correcting any minor circumferential misalignment and radial offset that may remain during the stacking process. This ensures that the coaxiality of the inner hole and the flatness of the end face of the entire stack of stators meet the assembly requirements of subsequent processes. As the centering blocks 35 slide outward... Simultaneously, the telescopic end of the elastic telescopic rod 33 is stretched, causing the magnetic plate 310 to move outward synchronously, so that the magnetic plate 310 is exactly below the through groove on the protruding section of the rotating wheel 32. At the same time, the rotating wheel 32 pulls the pull rope 38 during rotation. Through the transmission action of the pull rope 38, the bent rod 36 compresses the return spring 37 and moves downward. In addition, the magnetic polarity of the magnetic plate 310 and the magnetic block 39 are opposite, so the magnetic plate 310 will generate a downward magnetic attraction force on the magnetic block 39, causing the magnetic block 39 to overcome the elastic force of the return spring 37 in the through groove and move downward. Furthermore, the pull rope 38 pulls the bent rod 36 downward, so that the pressure plate at the end of the bent rod 36 is tightly attached to the top surface of the stack of stator laminations. The uniform axial pressure applied by the pressure plate can firmly press and fix the corrected stator laminations, effectively preventing secondary displacement or scattering of stator laminations due to equipment vibration and inertial impact during subsequent feeding, and ensuring the morphological stability of the stack of stators.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stator sheet stacking and unloading device, characterized in that: The stator sheet stacking and unloading device includes a conveying and stacking unit (1), which is equipped with a controller. The conveying and stacking unit (1) consists of a conveying component and a stacking component. An anti-scattering unit (2) is provided on one side of the conveying and stacking unit (1). The anti-scattering unit (2) includes an anti-scattering component. The anti-scattering component prevents stator laminations from scattering by changing its height. The anti-scattering component includes a support member and an anti-scattering member. The anti-scattering unit (2) is provided with a material picking and anti-overlapping unit (3). The material picking and anti-overlapping unit (3) includes a material picking and anti-overlapping component. The material picking and anti-overlapping component corrects the stator laminations by changing the angle to prevent overlapping. The material picking and anti-overlapping component includes a picking component, a centering component and a holding component. The centering component and the holding component are fixedly connected. The anti-scattering unit (2) is equipped with a feeding unit (4). The controller controls the support, anti-scattering unit and feeding unit to work together by receiving signals and feedback.

2. The stator lamination stacking and discharge device according to claim 1, characterized in that: The centering component includes a drive motor (31), a rotating wheel (32), an elastic telescopic rod (33), a push rod (34), and a centering block (35). The output end of the drive motor (31) is fixedly connected to the rotating wheel (32). The rotating wheel (32) is composed of multiple protruding and recessed sections spaced apart. The fixed end of the elastic telescopic rod (33) is fixedly installed on the fixed end of the drive motor (31). The telescopic end of the elastic telescopic rod (33) is fixedly connected to the centering block (35). One end of the push rod (34) is fixedly connected to the centering block (35), and the other end of the push rod (34) abuts against the rotating wheel (32).

3. The stator sheet stacking and discharge device according to claim 2, characterized in that: The retaining component includes a bent rod (36), a return spring (37), a pull rope (38), a magnetic block (39), and a magnetic plate (310). A pressure plate is provided at the end of the bent rod (36) away from the centering block (35). The bent rod (36) is slidably connected to the centering block (35). The bent rod (36) is connected to the centering block (35) through the return spring (37). The bent rod (36) is connected to the magnetic block (39) through the pull rope (38). A through groove is provided on the protruding section of the rotating wheel (32). The magnetic block (39) is connected to the through groove through a spring. The magnetic plate (310) is fixedly connected to the telescopic end of the elastic telescopic rod (33) through a straight rod. The magnetic block (39) and the magnetic plate (310) have opposite magnetic properties.

4. The stator lamination stacking and discharge device according to claim 3, characterized in that: The material handling component includes a support plate (311), a guide rail (312), and a telescopic motor (313). The support plate (311) and the fixed end of the telescopic motor (313) are fixedly connected. The guide rail (312) is provided on the support plate (311). The fixed end of the drive motor (31) is fixedly installed on the support plate (311). The centering block (35) is slidably installed in the guide rail (312).

5. The stator lamination stacking and discharge device according to claim 4, characterized in that: The anti-scattering components include a slider (21), a long rod (22), a column (23), a clamping plate (24), an elastic telescopic box (25), a telescopic plate (26), and a memory spring (27). The slider (21) is fixedly connected to the long rod (22). There are two long rods (22), and both long rods (22) are rotatably connected to the column (23). The long rods (22) are fixedly connected to the clamping plate (24). The clamping plate (24) is flexible near the stator end. The clamping plate (24) abuts against the elastic telescopic box (25). The end of the elastic telescopic box (25) near the clamping plate (24) is the telescopic end. The elastic telescopic box (25) is filled with liquid. The fixed end of the telescopic plate (26) is electrically connected to the elastic telescopic box (25). The telescopic plate (26) has a hollow structure. The two long rods are connected at one end near the slider (21) by a memory spring (27). The end of the elastic telescopic box (25) near the stator is flexible.

6. The stator lamination stacking and discharge device according to claim 5, characterized in that: The support includes an electric telescopic rod (28), a fixed ring (29), a bending plate (210), and a support frame (211). The fixed end of the electric telescopic rod (28) is fixedly installed on the fixed ring (29). The telescopic end of the electric telescopic rod (28) abuts against the bottom surface of the stator. The fixed ring (29) is connected to the support frame (211) through the bending plate (210). The slider (21) is slidably connected to the fixed ring (29). The elastic telescopic box (25) is connected to the fixed ring (29) through a connecting rod. A thin-film pressure sensor is provided on the telescopic end of the electric telescopic rod (28).

7. The stator sheet stacking and discharge device according to claim 1, characterized in that: The conveying component includes a frame (11), a transverse rod (12), and a drive module (13). The transverse rod (12) is provided on the frame (11), and the drive module (13) is provided on the transverse rod (12).

8. The stator lamination stacking and discharge device according to claim 7, characterized in that: The stacking component includes an inner support rod assembly (14) and a lifting claw (15). The drive module (13) is provided with the inner support rod assembly (14) and the drive module (13) is provided with the lifting claw (15).

9. A stator lamination stacking and discharge device according to claim 6, characterized in that: The feeding unit (4) includes a conveying plate (41) and a baffle (42). The conveying plate (41) is slidably connected to the support frame (211), and the baffle (42) is provided on the conveying plate (41).

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