Automatic processing and forming method for motor stator core

Abstract

The present invention relates to the technical field of stator core production, in particular to an automatic processing and forming method for an electric motor stator core, which includes a first punching mechanism, a second punching mechanism, a first feeding mechanism, a second feeding mechanism, a lamination conveying mechanism, an assembly fixture, a welding mechanism, and a blanking mechanism. The first punching mechanism is used to punch and form the first stator iron sheet, the second punching mechanism is used to punch and form the second stator iron sheet, the first feeding mechanism is used to grab the first stator iron sheet punched by the first punching mechanism and place it on the assembly fixture to assemble into a first stator iron ring, and the second feeding mechanism is used to grab the second stator iron sheet punched on the second punching mechanism and stack it on the first stator iron ring on the assembly fixture to form a second stator iron ring. Through a series of automated and precise processing steps, the present invention realizes the efficient, precise, and stable production of the stator core. This method not only improves production efficiency and reduces production costs, but also significantly improves the quality and reliability of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of stator core production, and particularly to an automatic processing and forming method for an electric motor stator core. Background Art

[0002] The basic requirements of a stator core are good magnetic conductivity and low loss. It is composed of punched sheets and various fasteners pressed tightly. Common component parts include sector-shaped sheets, ventilation slot sheets, positioning ribs, upper and lower tooth pressure plates, tension bolts, and support plates, etc. The stator core is formed by stacking sector-shaped sheets punched from silicon steel sheets on the positioning ribs. The positioning ribs are welded to the frame ring plate through the support plates, and the iron core is pressed into a whole by the upper and lower tooth pressure plates using tension bolts. The production process of an electric motor stator core involves multiple processes. Among them, the laser welding process has been widely used in the lamination forming process due to its advantages of high quality and low cost. Lamination forming is to process silicon steel sheets into individual stator punched sheets through processes such as cutting and stamping, stack them layer by layer, apply pressure to tighten them layer by layer, and then use the welding process to weld the surfaces of each silicon steel sheet to each other at the reserved weld seams to form a whole stator.

[0003] In the existing production process of an electric motor stator core, due to the reasons of the stator core itself, the structural stability is poor, and the efficiency is low during the production process, which affects the product quality. Therefore, new improvements need to be made to the existing production and structure of the electric motor stator core. Summary of the Invention

[0004] To solve the above problems, the present invention realizes the efficient, precise and stable production of the stator core through a series of automated and precise processing steps. This method not only improves the production efficiency, reduces the production cost, but also significantly improves the quality and reliability of the product, an automatic processing and forming method for an electric motor stator core.

[0005] The technical solution adopted by the present invention is as follows: An automatic processing and forming method for a motor stator core, where the stator core is formed by sequentially laminating a plurality of first stator iron rings and a plurality of second stator iron rings; the first stator iron ring is formed by circumferentially connecting a plurality of first stator iron sheets, and the second stator iron ring is formed by circumferentially connecting a plurality of second stator iron sheets; the first stator iron sheet includes a first yoke, a first tooth portion, and a first pole shoe. On both sides of the first yoke, there are a first connection groove and a first connection boss. Adjacent two first stator iron sheets are spliced through the first connection groove and the first connection boss. The first yoke is arc-shaped. The first tooth portion is connected to one side of the first yoke, and the included angle between the axial tangent of the first tooth portion and the axial tangent of the first yoke is 10°; the second stator iron sheet includes a second yoke, a second tooth portion, and a second pole shoe. On both sides of the second yoke, there are a second connection groove and a second connection boss. Adjacent two second stator iron sheets are spliced through the second connection groove and the second connection boss. The second yoke is arc-shaped. The second tooth portion is connected to one side of the second yoke, and the included angle between the axial tangent of the second tooth portion and the axial tangent of the second yoke is 10°; the second yoke is arranged on two adjacent first yokes so that the second tooth portion corresponds to the first tooth portion; on the same diameter line as the first yoke, the first connection groove, and the first connection boss, there are three first positioning holes, and the three first positioning holes are evenly distributed along the circumferential direction of the first yoke. The first tooth portion is provided with a second positioning hole, and the second positioning hole and the adjacent first positioning hole are on the same coaxial tangent; on the same diameter line as the second yoke, the second connection groove, and the second connection boss, there are three third positioning holes, and the three third positioning holes are evenly distributed along the circumferential direction of the second yoke. The second tooth portion is provided with a fourth positioning hole, and the fourth positioning hole and the adjacent third positioning hole are on the same coaxial tangent;

[0006] The automatic processing and forming method for the motor stator core is completed by an automatic processing device. The automatic processing device includes a first punching mechanism, a second punching mechanism, a first feeding mechanism, a second feeding mechanism, a lamination conveying mechanism, an assembly jig, a welding mechanism, and a blanking mechanism. The first punching mechanism is used to punch and form the first stator iron sheet, the second punching mechanism is used to punch and form the second stator iron sheet. The assembly jig is arranged on the lamination conveying mechanism, and the lamination conveying mechanism is used to drive the assembly jig to circulate and transport. The first feeding mechanism is used to grab the first stator iron sheet punched by the first punching mechanism and place it on the assembly jig to assemble into a first stator iron ring. The second feeding mechanism is used to grab the second stator iron sheet punched by the second punching mechanism and place it on the first stator iron ring on the assembly jig for stacking to form a second stator iron ring; the welding mechanism welds a plurality of mutually laminated first stator iron rings and second stator iron rings to form a stator core, and the blanking mechanism is used to take out and blank the assembled stator core on the assembly jig;

[0007] The automatic processing and forming method of the motor stator core includes the following steps:

[0008] Step S1, forming of stator iron sheets: The first punching mechanism punches and forms the first stator iron sheet from the strip material, and the second punching mechanism punches and forms the second stator iron sheet from the strip material;

[0009] Step S2, conveying and vibrating sieve of stator iron sheets: After the first punching mechanism punches and forms the first stator iron sheet, it vibrates and conveys the sheet-shaped first stator iron sheet towards the first feeding mechanism; at the same time, after the second punching mechanism punches and forms the second stator iron sheet, it vibrates and conveys the sheet-shaped second stator iron sheet towards the second feeding mechanism;

[0010] Step S3, assembling of the first stator iron ring: The first feeding mechanism grabs the first stator iron sheet, and after grabbing, places the first stator iron sheet on the assembling fixture, and sequentially assembles 12 first stator iron sheets for circumferential combination. After assembling one each time, the assembling fixture rotates 30°, and then assembles the next one until 12 assemblies are completed to form the first stator iron ring;

[0011] Step S4, assembling of the second stator iron ring: The second feeding mechanism grabs the second stator iron sheet, and after grabbing, transfers the second stator iron sheet above the assembling fixture. The assembling fixture rotates 15° so that the third positioning hole corresponds to the first positioning holes of two adjacent first stator iron sheets, and the second positioning hole corresponds to the fourth positioning hole; so that the first tooth part is flush with the second tooth part; then sequentially assemble 12 second stator iron sheets for circumferential combination. After assembling one each time, the assembling fixture rotates 30°, and then assembles the next one until 12 assemblies are completed to form the second stator iron ring;

[0012] Step S5, repeat steps S3 - S4 multiple times to stack multiple layers of the first stator iron ring and the second stator iron ring to form the stator core;

[0013] Step S6, welding of the stator core: After the stacking of the stator core is completed, the stacking and conveying mechanism transports the assembling fixture to the welding mechanism, and the welding mechanism welds the outside of the stator core so that the first stator iron ring and the second stator iron ring are fixedly connected;

[0014] Step S7, blanking of the stator core: After the welding and fixing are completed, the stator core is grabbed and blanked from the assembling fixture through the blanking mechanism.

[0015] For further improvement of the above solution, at one end of the first positioning hole, the second positioning hole, the third positioning hole, and the fourth positioning hole, a mating flange is formed by punching, and the mating flange is used for positioning and mating between adjacent first stator iron rings and second stator iron rings.

[0016] A further improvement to the above solution is that in step S4, the third positioning hole and the first positioning hole are positioned in cooperation through a mating boss, and the fourth positioning hole and the second positioning hole are positioned in cooperation through a mating boss.

[0017] A further improvement to the above solution is that when the first stator iron ring and the second stator iron ring are laminated, the second yoke is positioned and cooperated with two adjacent first positioning holes through the third positioning hole, so that the first tooth part and the second tooth part are aligned, and the second positioning hole and the fourth positioning hole are cooperated.

[0018] A further improvement to the above solution is that the first punching mechanism includes a first material unwinding assembly, a first punching assembly, a first punching die, a first material receiving and conveying assembly, a first vibrating sieve assembly, and a first material discharging tray; the first material unwinding assembly is used for feeding the material towards the first punching die, the first punching die is arranged on the first punching assembly, the first punching assembly is used for driving the first punching die to punch the material to form the first stator iron sheet, and the first stator iron sheet falls into the first material receiving and conveying assembly, the first material receiving and conveying assembly conveys the first stator iron sheet to the first vibrating sieve assembly, the first vibrating sieve assembly screens the direction of the first stator iron sheet through vibration, and the first material discharging tray is used for placing the first stator iron sheet with the adjusted direction; the first feeding mechanism is used for grasping the first stator iron sheet on the first material discharging tray.

[0019] A further improvement to the above solution is that the second punching mechanism includes a second material unwinding assembly, a second punching assembly, a second punching die, a second material receiving and conveying assembly, a second vibrating sieve assembly, and a second material discharging tray; the second material unwinding assembly is used for feeding the material towards the second punching die, the second punching die is arranged on the second punching assembly, the second punching assembly is used for driving the second punching die to punch the material to form the second stator iron sheet, and the second stator iron sheet falls into the second material receiving and conveying assembly, the second material receiving and conveying assembly conveys the second stator iron sheet to the second vibrating sieve assembly, the second vibrating sieve assembly screens the direction of the second stator iron sheet through vibration, and the second material discharging tray is used for placing the second stator iron sheet with the adjusted direction; the second feeding mechanism is used for grasping the second stator iron sheet on the second material discharging tray.

[0020] A further improvement to the above solution is that the first loading mechanism includes a first material taking frame, a first detection module, a first material taking fixing frame, a first link driving module, a first rotation driving module, and a first material taking element. The first detection module is arranged on the first material taking frame. The first detection module is a detection camera and faces the first material discharging tray to provide the position and direction for taking materials to the first link driving module and the first rotation driving module. The first material taking fixing frame is arranged at the top of the first material taking frame. The first link driving module and the first rotation driving module are both arranged on the first material taking fixing frame. Multiple groups of the first link driving module are provided, and the multiple groups of the first link driving module are arranged around the first rotation driving module. The first link driving module includes a first link driving motor, a first movable link, and a second movable link. The driving end of the first link driving motor is connected to the first movable link. One end of the second movable link is hinged to the first movable link, and the other end is connected to the first material taking element. The first rotation driving module includes a first rotation driving motor, a first rotation link, and a first telescopic link. The first rotation driving motor is connected to the first rotation link. One end of the first telescopic link is movably connected to the first rotation link, and the other end is connected to the first material taking element through a universal joint.

[0021] A further improvement to the above solution is that the second loading mechanism includes a second material taking frame, a second detection module, a second material taking fixing frame, a second link driving module, a second rotation driving module, and a second material taking element. The second detection module is arranged on the second material taking frame. The second detection module is a detection camera and faces the second material discharging tray to provide the position and direction for taking materials to the second link driving module and the second rotation driving module. The second material taking fixing frame is arranged at the top of the second material taking frame. The second link driving module and the second rotation driving module are both arranged on the second material taking fixing frame. Multiple groups of the second link driving module are provided, and the multiple groups of the second link driving module are arranged around the second rotation driving module. The second link driving module includes a second link driving motor, a third movable link, and a fourth movable link. The driving end of the second link driving motor is connected to the third movable link. One end of the second movable link is hinged to the second movable link, and the other end is connected to the second material taking element. The second rotation driving module includes a second rotation driving motor, a second rotation link, and a second telescopic link. The second rotation driving motor is connected to the second rotation link. One end of the second telescopic link is movably connected to the second rotation link, and the other end is connected to the second material taking element through a universal joint.

[0022] A further improvement to the above solution is that the lamination conveying mechanism includes at least two interconnected conveying lines, and positioning components are arranged on the conveying lines. The positioning components are used for positioning the assembly jig on the conveying lines.

[0023] A further improvement to the above solution is that the assembly jig is provided with an assembly driving module and an assembly disk. The assembly driving module is used to drive the assembly disk to rotate. The assembly disk is provided with assembly grooves, and a welding groove is arranged outside the assembly grooves. One end of the welding groove communicates with the assembly groove. The first feeding mechanism is used to assemble the first stator iron sheets on the assembly grooves. After each assembly, the assembly driving module drives the assembly grooves to rotate to the position of the next first stator iron sheet for feeding.

[0024] A further improvement to the above solution is that the second feeding mechanism is used to assemble the second stator iron sheets on the first stator iron sheets in the assembly grooves. After each assembly, the assembly driving module drives the assembly grooves to rotate to the position of the next second stator iron sheet for feeding.

[0025] A further improvement to the above solution is that the welding mechanism includes a pressing module and a welding module. The pressing module is used to press and fix the assembled stator core on the assembly jig. There are multiple groups of the welding modules, and the multiple groups of welding modules correspond to the welding grooves. The welding module includes a welding adjustment module, a welding driving module, and a welding head. The welding driving module is arranged on the welding driving module, and the welding head is arranged on the welding driving module. The welding driving module is used to drive the welding head to move towards the welding groove to weld and connect the first stator iron ring and the second stator iron ring.

[0026] A further improvement to the above solution is that the blanking mechanism includes a blanking manipulator and a blanking conveyor line. The blanking manipulator is used to grab the welded stator core on the assembly jig and place it on the blanking conveyor line for blanking.

[0027] The beneficial effects of the present invention are:

[0028] Compared with the existing stator core, the stator core of the present invention is constructed by sequentially laminating a plurality of first stator iron rings and a plurality of second stator iron rings, forming a stator core with a compact and stable structure. This laminated structure not only enhances the mechanical strength of the stator core, but also helps to reduce electromagnetic leakage and improve the overall performance of the motor. At the same time, the laminated design makes the stator core easy to assemble and disassemble during the manufacturing process, facilitating maintenance and replacement. Secondly, the circumferential connection design of the first stator iron sheet and the second stator iron sheet ensures the continuity and consistency of the stator core in the circumferential direction. The splicing method of the first connection groove and the first connection boss, and the second connection groove and the second connection boss not only simplifies the connection process of the stator iron sheet, but also improves the reliability and accuracy of the connection. This design helps to reduce the vibration and noise of the stator core during operation and improve the stability and durability of the motor. Furthermore, the special structural design of the first stator iron sheet and the second stator iron sheet, such as the arrangement of the first yoke, the first tooth part, the first pole shoe, the second yoke, the second tooth part, and the second pole shoe, further optimizes the electromagnetic performance of the motor. In particular, the design with an included angle of 10° between the axial tangents of the first tooth part and the second tooth part and the axial tangent of the yoke helps to improve the air-gap magnetic density distribution of the motor and increase the power density and efficiency of the motor. Finally, the layout of the second yoke on two adjacent first yokes realizes the correspondence between the first tooth part and the second tooth part, thereby enhancing the electromagnetic coupling effect of the stator core. This design not only improves the output performance of the motor, but also enables the motor to have better dynamic response capabilities when the load changes.

[0029] The automatic processing equipment realizes the rapid and precise stamping and forming of the stator iron sheet by integrating the first punching mechanism and the second punching mechanism. The automation of this step greatly improves the production efficiency, reduces the dependence on manual operation, and at the same time ensures the consistency and stability of the stamping and forming. Secondly, in the lamination and assembly process, the first feeding mechanism and the second feeding mechanism can accurately grasp and place the stamped stator iron sheets onto the assembly fixture to form the first stator iron ring and the second stator iron ring. The cyclic transmission function of the lamination conveying mechanism further improves the continuous operation ability of the production line and ensures the smoothness and efficiency of the lamination and assembly process. In addition, the welding mechanism adopts advanced welding technology and can firmly weld a plurality of mutually laminated first stator iron rings and second stator iron rings together to form a stator core with a stable structure and reliable performance. The automation of this step not only improves the welding quality, but also significantly reduces the potential safety hazards caused by manual welding. The blanking mechanism is responsible for taking out the assembled stator core from the assembly fixture to prepare for the next round of production. The automation of this step also improves the overall efficiency of the production line and reduces the complexity and errors of manual operation. Through the highly automated and integrated design, the present invention achieves a significant improvement in production efficiency, stable and reliable product quality, effective cost control, and enhanced production flexibility.

[0030] Automatic processing and forming method for motor stator core. First, in the stator iron sheet forming stage (step S1), a parallel operation mode of double punching mechanisms is adopted, effectively improving material utilization rate and production efficiency. The first punching mechanism and the second punching mechanism respectively punch out the first stator iron sheet and the second stator iron sheet from the strip material. This parallel processing method reduces waiting time and makes the production process more compact and efficient. In the stator iron sheet conveying and vibrating screen stage (step S2), the vibrating screen device orderly conveys the stamped stator iron sheets to the corresponding feeding mechanisms, ensuring the smooth progress of the subsequent assembly process. The automation of this step not only reduces manual intervention but also improves the accuracy and stability of conveying. In the stator iron ring assembly stage (steps S3 and S4), the first feeding mechanism and the second feeding mechanism are respectively responsible for grasping and placing the first stator iron sheet and the second stator iron sheet. By precisely controlling the rotation angle of the assembly jig, the circumferential combination of the stator iron sheets is achieved, forming the first stator iron ring and the second stator iron ring. This precise assembly method ensures the structural stability and electrical performance of the stator core. By repeating steps S3 to S4 multiple times, multiple layers of the first stator iron ring and the second stator iron ring can be laminated to form the required stator core (step S5). This lamination method not only improves the strength and stiffness of the stator core but also makes its electrical performance more excellent. At the same time, the automated lamination process reduces errors caused by manual operation and improves the consistency and reliability of the product. In the stator core welding stage (step S6), the welding mechanism welds the outer side of the stator core to ensure a firm connection between the first stator iron ring and the second stator iron ring. This welding method not only improves the overall strength of the stator core but also avoids electrical failures caused by poor connection. At the same time, the automated welding process reduces the generation of welding deformation and defects and improves the welding quality and durability of the product. Finally, after the welding is fixed, the stator core is grabbed and unloaded from the assembly jig by the unloading mechanism (step S7). The automation of this step not only improves production efficiency but also ensures the safety and stability of the stator core during conveying and storage. Through a series of automated and precise processing steps, the efficient, precise and stable production of the stator core is achieved. This method not only improves production efficiency, reduces production costs, but also significantly improves the quality and reliability of the product. Description of the Drawings

[0031] Figure 1 is a structural schematic diagram of the stator core of the present invention;

[0032] Figure 2 is Figure 1 a schematic diagram of a partial structure of the stator core in

[0033] Figure 3 is Figure 2 an exploded view of the stator core in

[0034] Figure 4 It is a schematic diagram of the stamping preparation process of the first stator iron sheet and the second stator iron sheet of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the automatic processing equipment of the present invention;

[0036] Figure 6 is Figure 5 a schematic diagram of the structure of the first punching mechanism and the second punching mechanism of the automatic processing equipment in

[0037] Figure 7 is Figure 5 a schematic diagram of the structure of the first punching mechanism and the second punching mechanism of the automatic processing equipment in

[0038] Figure 8 is Figure 5 a schematic diagram of the structure of the first feeding mechanism and the second feeding mechanism of the automatic processing equipment in

[0039] Figure 9 is Figure 5 a schematic diagram of the structure of the first feeding mechanism and the second feeding mechanism of the automatic processing equipment in

[0040] Figure 10 is Figure 5 a partial schematic diagram of the structure of the first feeding mechanism and the second feeding mechanism of the automatic processing equipment in

[0041] Figure 11 is Figure 5 a schematic diagram of the structure of the lamination conveying mechanism of the automatic processing equipment in

[0042] Figure 12 is Figure 11 an enlarged schematic diagram at position A in

[0043] Figure 13 is Figure 5 a schematic diagram of the structure of the lamination conveying mechanism of the automatic processing equipment in

[0044] Figure 14 is Figure 5 a schematic diagram of the structure of the welding mechanism of the automatic processing equipment in

[0045] Figure 15 It is a schematic flowchart of the automatic processing and forming method of the motor stator core of the present invention.

[0046] Description of reference numerals in the drawings: Stator core 10, first stator iron ring 1, first stator iron sheet 11, first yoke 111, first tooth portion 112, first pole shoe 113, first connection groove 114, first connection boss 115, first positioning hole 116, second positioning hole 117;

[0047] Second stator iron ring 2, second stator iron sheet 21, second yoke 211, second tooth portion 212, second pole shoe 213, second connection groove 214, second connection boss 215, third positioning hole 216, fourth positioning hole 217;

[0048] First punching mechanism 3, first material uncoiling assembly 31, first punching assembly 32, first punching die 33, first material receiving and conveying assembly 34, first vibrating sieve assembly 35, first material discharging tray 36;

[0049] Second punching mechanism 4, second material uncoiling assembly 41, second punching assembly 42, second punching die 43, second material receiving and conveying assembly 44, second vibrating sieve assembly 45, second material discharging tray 46;

[0050] First loading mechanism 5, first material picking frame 51, first detection module 52, first material picking fixing frame 53, first link driving module 54, first link driving motor 541, first movable link 543, second movable link 544, first rotary driving module 55, first rotary driving motor 551, first rotary link 552, first telescopic link 553, first material picking element 56;

[0051] Second loading mechanism 6, second material picking frame 61, second detection module 62, second material picking fixing frame 63, second link driving module 64, second link driving motor 641, third movable link 642, fourth movable link 643, second rotary driving module 65, second rotary driving motor 651, second rotary link 652, second telescopic link 653, second material picking element 66;

[0052] Laminating conveying mechanism 7, conveying line 71, positioning assembly 72;

[0053] Assembly fixture 8, assembly driving module 81, assembly tray 82, welding groove 821, assembly groove 83;

[0054] Welding mechanism 9, pressing module 91, pressing driving cylinder 911, pressing plate 912, welding module 92, welding adjusting module 921, welding driving module 922, welding head 923;

[0055] Unloading mechanism 20, unloading manipulator 201, unloading conveying line 202. Detailed implementation manners

[0056] For ease of understanding of the present invention, the present invention will be described more fully hereinafter with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the understanding of the disclosure of the present invention is more thorough and comprehensive.

[0057] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As Figures 1 to 4As shown in the figure, in an embodiment of the present invention, the stator core 10 is formed by sequentially laminating a plurality of first stator iron rings 1 and a plurality of second stator iron rings 2; the first stator iron ring 1 is formed by circumferentially connecting a plurality of first stator iron sheets 11, and the second stator iron ring 2 is formed by circumferentially connecting a plurality of second stator iron sheets 21; the first stator iron sheet 11 includes a first yoke 111, a first tooth portion 112, and a first pole shoe 113. A first connection groove 114 and a first connection boss 115 are provided on both sides of the first yoke 111. Adjacent two first stator iron sheets 11 are spliced through the first connection groove 114 and the first connection boss 115. The first yoke 111 is arc-shaped. The first tooth portion 112 is connected to one side of the first yoke 111. The included angle between the axial tangent of the first tooth portion 112 and the axial tangent of the first yoke 111 is 10°; the second stator iron sheet 21 includes a second yoke 211, a second tooth portion 212, and a second pole shoe 213. A second connection groove 214 and a second connection boss 215 are provided on both sides of the second yoke 211. Adjacent two second stator iron sheets 21 are spliced through the second connection groove 214 and the second connection boss 215. The second yoke 211 is arc-shaped. The second tooth portion 212 is connected to one side of the second yoke 211. The included angle between the axial tangent of the second tooth portion 212 and the axial tangent of the second yoke 211 is 10°; the second yoke 211 is arranged on two adjacent first yokes 111 so that the second tooth portion 212 corresponds to the first tooth portion 112. In this embodiment, by sequentially laminating a plurality of first stator iron rings 1 and a plurality of second stator iron rings 2, a stator core 10 with a compact and stable structure is constructed. This laminated structure not only enhances the mechanical strength of the stator core 10, but also helps to reduce electromagnetic leakage and improve the overall performance of the motor. At the same time, the laminated design makes the stator core 10 easy to assemble and disassemble during the manufacturing process, facilitating maintenance and replacement. Secondly, the circumferential connection design of the first stator iron sheet 11 and the second stator iron sheet 21 ensures the continuity and consistency of the stator core 10 in the circumferential direction. The splicing methods of the first connection groove 114 and the first connection boss 115, and the second connection groove 214 and the second connection boss 215 not only simplify the connection process of the stator iron sheets, but also improve the reliability and accuracy of the connection. This design helps to reduce the vibration and noise of the stator core 10 during operation and improve the stability and durability of the motor. Furthermore, the special structural design of the first stator iron sheet 11 and the second stator iron sheet 21, such as the arrangement of the first yoke 111, the first tooth portion 112, the first pole shoe 113, the second yoke 211, the second tooth portion 212, and the second pole shoe 213, further optimizes the electromagnetic performance of the motor. Especially the design that the included angle between the axial tangents of the first tooth portion 112 and the second tooth portion 212 and the axial tangent of the yoke is 10° helps to improve the air-gap magnetic density distribution of the motor and increase the power density and efficiency of the motor.Finally, the second yoke 211 is arranged on two adjacent first yokes 111, realizing the correspondence between the first tooth part 112 and the second tooth part 212, thereby enhancing the electromagnetic coupling effect of the stator core 10. This design not only improves the output performance of the motor, but also enables the motor to have better dynamic response ability when the load changes.

[0059] Three first positioning holes 116 are provided on the same diameter line of the first yoke 111, the first connecting groove 114 and the first connecting boss 115. The three first positioning holes 116 are evenly distributed along the circumferential direction of the first yoke 111. The first tooth part 112 is provided with a second positioning hole 117, and the second positioning hole 117 is on the coaxial tangent with the adjacent first positioning hole 116. Specifically, three third positioning holes 216 are provided on the same diameter line of the second yoke 211, the second connecting groove 214 and the second connecting boss 215. The three third positioning holes 216 are evenly distributed along the circumferential direction of the second yoke 211. The second tooth part 212 is provided with a fourth positioning hole 217, and the fourth positioning hole 217 is on the coaxial tangent with the adjacent third positioning hole 216. In this embodiment, the design of the positioning holes greatly improves the assembly accuracy of the stator core 10. Since the positioning holes are evenly distributed in the circumferential direction of the yoke, they provide accurate positioning and fixing points for the various components of the stator core 10. This not only ensures the accurate relative position between the various components, but also reduces the errors that may occur during the assembly process, thereby improving the manufacturing quality of the entire stator core 10. Secondly, the arrangement that the second positioning hole 117 and the fourth positioning hole 217 are on the coaxial tangent with the adjacent first positioning hole 116 and the third positioning hole 216 further optimizes the structural stability of the stator core 10. This design makes the connection between the various components more firm, capable of withstanding greater mechanical stress and electromagnetic force. At the same time, it also enhances the heat dissipation performance of the stator core 10, because by optimizing the layout of the components, the air flow can be more effectively utilized for heat dissipation. In addition, this design also simplifies the production process of the stator core 10. Since the positioning and connection between the various components become simpler and more direct, the complexity and cost in the production process can be reduced. At the same time, due to the even distribution of the positioning holes and the coaxial tangent setting, the production efficiency can also be improved, because it is easier to achieve automated and mechanized production.

[0060] One end of the first positioning hole 116, the second positioning hole 117, the third positioning hole 216, and the fourth positioning hole 217 are all formed with mating flanges by stamping. The mating flanges are used for positioning and mating between the adjacent first stator iron core ring 1 and the second stator iron core ring 2. In this embodiment, the mating flange structure greatly improves the positioning accuracy between the stator iron core rings. During the assembly process, the adjacent first stator iron core ring 1 and the second stator iron core ring 2 can achieve precise docking through the mating flanges, avoiding the deviation that may occur in the traditional positioning method, thereby ensuring the overall structural stability and performance reliability of the stator core 10. Secondly, the use of the mating flanges simplifies the production process. The flanges are directly formed by stamping, reducing additional positioning and fixing steps and improving production efficiency. At the same time, this integrated design also reduces the errors and defect rates that may occur during the production process, further improving the product quality.

[0061] When the first stator iron core ring 1 and the second stator iron core ring 2 are stacked, the second yoke 211 is positioned and mated with two adjacent first positioning holes 116 through the third positioning hole 216, so that the first tooth portion 112 is aligned with the second tooth portion 212, and the second positioning hole 117 is mated with the fourth positioning hole 217. In this embodiment, when the first stator iron core ring 1 and the second stator iron core ring 2 are stacked, the positioning and mating of the third positioning hole 216 of the second yoke 211 with two adjacent first positioning holes 116 ensure the stability and accuracy of the two during the assembly process. This design not only simplifies the assembly process but also greatly improves the production efficiency because it reduces the rework and waste caused by inaccurate positioning. More importantly, this positioning mechanism ensures the precise alignment of the first tooth portion 112 and the second tooth portion 212. This is crucial for the electromagnetic performance of the stator core 10 because the alignment degree of the tooth portions directly affects the magnetic flux distribution and efficiency. By precise alignment, the magnetic resistance can be minimized, improving the overall performance of the motor. In addition, the mating of the second positioning hole 117 and the fourth positioning hole 217 further enhances the structural stability. This design not only helps to prevent the stator iron core rings from shifting or deforming during operation but also improves the durability and reliability of the entire stator core 10.

[0062] Refer to Figures 5 to 14As shown in the figure, the full-automatic production line for the stator core 10 of a brushless motor includes a first punching mechanism 3, a second punching mechanism 4, a first feeding mechanism 5, a second feeding mechanism 6, a lamination conveying mechanism 7, an assembly jig 8, a welding mechanism 9, and a blanking mechanism 20. The first punching mechanism 3 is used to punch and form the first stator iron sheet 11. The second punching mechanism 4 is used to punch and form the second stator iron sheet 21. The assembly jig 8 is arranged on the lamination conveying mechanism 7, and the lamination conveying mechanism 7 is used to drive the assembly jig 8 to circulate and transport. The first feeding mechanism 5 is used to grab the first stator iron sheet 11 punched by the first punching mechanism 3 and place it on the assembly jig 8 to assemble into the first stator iron ring 1. The second feeding mechanism 6 is used to grab the second stator iron sheet 21 punched on the second punching mechanism 4 and place it on the first stator iron ring 1 on the assembly jig 8 for stacking to form the second stator iron ring 2. The welding mechanism 9 welds a plurality of mutually laminated first stator iron rings 1 and second stator iron rings 2 to form the stator core 10. The blanking mechanism 20 is used to take out and blank the assembled stator core 10 on the assembly jig 8. In this embodiment, by integrating the first punching mechanism 3 and the second punching mechanism 4, the rapid and precise punching and forming of the stator iron sheet are realized. The automation of this step greatly improves the production efficiency, reduces the dependence on manual operation, and at the same time ensures the consistency and stability of the punching and forming. Secondly, in the lamination and assembly process, the first feeding mechanism 5 and the second feeding mechanism 6 can accurately grab the punched stator iron sheets and place them on the assembly jig 8 to form the first stator iron ring 1 and the second stator iron ring 2. The circulating transport function of the lamination conveying mechanism 7 further improves the continuous operation ability of the production line and ensures the smoothness and efficiency of the lamination and assembly process. In addition, the welding mechanism 9 adopts advanced welding technology and can firmly weld a plurality of mutually laminated first stator iron rings 1 and second stator iron rings 2 together to form a stator core 10 with stable structure and reliable performance. The automation of this step not only improves the welding quality but also significantly reduces the potential safety hazards caused by manual welding. The blanking mechanism 20 is responsible for taking out the assembled stator core 10 from the assembly jig 8 to prepare for the next round of production. The automation of this step also improves the overall efficiency of the production line and reduces the tediousness and errors of manual operation. Through the highly automated and integrated design, the present invention realizes the significant improvement of production efficiency, the stable and reliable product quality, the effective control of costs, and the enhancement of production flexibility.

[0063] Refer to Figures 6 to 7As shown in the figure, the first punching sheet mechanism 3 includes a first material uncoiling assembly 31, a first punching assembly 32, a first punching die 33, a first material receiving and conveying assembly 34, a first vibrating sieve assembly 35, and a first material discharging tray 36; the first material uncoiling assembly 31 is used to discharge the material towards the first punching die 33, the first punching die 33 is arranged on the first punching assembly 32, the first punching assembly 32 is used to drive the first punching die 33 to punch the material to form the first stator iron sheet 11, and it falls into the first material receiving and conveying assembly 34, the first material receiving and conveying assembly 34 conveys the first stator iron sheet 11 to the first vibrating sieve assembly 35, the first vibrating sieve assembly 35 screens the direction of the first stator iron sheet 11 through vibration, and the first material discharging tray 36 is used to place the first stator iron sheet 11 with the adjusted direction; the first loading mechanism 5 is used to grab the first stator iron sheet 11 on the first material discharging tray 36; specifically, the second punching sheet mechanism 4 includes a second material uncoiling assembly 41, a second punching assembly 42, a second punching die 43, a second material receiving and conveying assembly 44, a second vibrating sieve assembly 45, and a second material discharging tray 46; the second material uncoiling assembly 41 is used to discharge the material towards the second punching die 43, the second punching die 43 is arranged on the second punching assembly 42, the second punching assembly 42 is used to drive the second punching die 43 to punch the material to form the second stator iron sheet 21, and it falls into the second material receiving and conveying assembly 44, the second material receiving and conveying assembly 44 conveys the second stator iron sheet 21 to the second vibrating sieve assembly 45, the second vibrating sieve assembly 45 screens the direction of the second stator iron sheet 21 through vibration, and the second material discharging tray 46 is used to place the second stator iron sheet 21 with the adjusted direction; the second loading mechanism 6 is used to grab the second stator iron sheet 21 on the second material discharging tray 46. In this embodiment, first of all, the first punching sheet mechanism 3 realizes the seamless connection of the material from uncoiling to punching and forming through its integrated core components such as the first material uncoiling assembly 31, the first punching assembly 32, and the first punching die 33. This process not only greatly shortens the production cycle, but also ensures the stability and consistency of the material during the punching process, thereby effectively improving the forming quality of the first stator iron sheet 11. The coordinated use of the first material receiving and conveying assembly 34 and the first vibrating sieve assembly 35 further ensures the smoothness of the stator iron sheet during the conveying process and the accuracy of the direction, laying a solid foundation for the subsequent assembly process. Similarly, the second punching sheet mechanism 4 corresponds to the first punching sheet mechanism 3 in terms of structure and function, but is customized for different types of stator iron sheets. Through the precise material discharging of the second material uncoiling assembly 41 and the precise driving of the second punching assembly 42, the second punching die 43 can efficiently punch the material into the second stator iron sheet 21. This process not only improves the flexibility of the production line, but also meets the production requirements of diversified products. The coordinated action of the second material receiving and conveying assembly 44 and the second vibrating sieve assembly 45 further guarantees the quality and efficiency of the second stator iron sheet 21 during the conveying and screening processes.In addition, the design of the first material discharging tray 36 and the second material discharging tray 46 provides a convenient operation platform for adjusting the direction of the stator iron sheets. Combined with the precise grasping functions of the first feeding mechanism 5 and the second feeding mechanism 6, seamless docking of the stator iron sheets from production to feeding is achieved, further improving the automation level and production efficiency of the production line.

[0064] Refer to Figures 8 to 10As shown in the figure, the first feeding mechanism 5 includes a first material picking rack 51, a first detection module 52, a first material picking fixing rack 53, a first link driving module 54, a first rotation driving module 55, and a first material picking element 56. The first detection module 52 is arranged on the first material picking rack 51. The first detection module 52 is a detection camera and faces the first material placing tray 36 to provide the position and direction for material picking required by the first link driving module 54 and the first rotation driving module 55. The first material picking fixing rack 53 is arranged at the top of the first material picking rack 51. The first link driving module 54 and the first rotation driving module 55 are both arranged on the first material picking fixing rack 53. Multiple groups of the first link driving module 54 are arranged around the first rotation driving module 55. The first link driving module 54 includes a first link driving motor 541, a first movable link 543, and a second movable link 544. The driving end of the first link driving motor 541 is connected to the first movable link 543. One end of the second movable link 544 is hinged to the first movable link 543, and the other end is connected to the first material picking element 56. The first rotation driving module 55 includes a first rotation driving motor 551, a first rotation link 552, and a first telescopic link 553. The first rotation driving motor 551 is connected to the first rotation link 552. One end of the first telescopic link 553 is movably connected to the first rotation link 552, and the other end is connected to the first material picking element 56 through a universal joint. Specifically, the second feeding mechanism 6 includes a second material picking rack 61, a second detection module 62, a second material picking fixing rack 63, a second link driving module 64, a second rotation driving module 65, and a second material picking element 66. The second detection module 62 is arranged on the second material picking rack 61. The second detection module 62 is a detection camera and faces the second material placing tray 46 to provide the position and direction for material picking required by the second link driving module 64 and the second rotation driving module 65. The second material picking fixing rack 63 is arranged at the top of the second material picking rack 61. The second link driving module 64 and the second rotation driving module 65 are both arranged on the second material picking fixing rack 63. Multiple groups of the second link driving module 64 are arranged around the second rotation driving module 65. The second link driving module 64 includes a second link driving motor 641, a third movable link 642, and a fourth movable link 643. The driving end of the second link driving motor 641 is connected to the third movable link 642. One end of the third movable link 642 is hinged to the fourth movable link 643, and the other end is connected to the second material picking element 66.The second rotation drive module 65 includes a second rotation drive motor 651, a second rotation link 652, and a second telescopic link 653. The second rotation drive motor 651 is connected to the second rotation link 652. One end of the second telescopic link 653 is movably connected to the second rotation link 652, and the other end is connected to the second picking element 66 through a universal joint. In this embodiment, first, both the first feeding mechanism 5 and the second feeding mechanism 6 are equipped with advanced detection modules, namely detection cameras. These cameras are respectively oriented towards the first material placing tray 36 and the second material placing tray 46, and can accurately capture the position and orientation information of the stator core 10 to be picked. This function greatly reduces the error rate of manual positioning and improves the accuracy and efficiency of picking. Through the real-time feedback image data, the system can quickly adjust the picking strategy to ensure that each picking is accurate. Secondly, the combined use of the link drive module and the rotation drive module provides strong power support and flexible maneuverability for the picking process. In the first feeding mechanism 5 and the second feeding mechanism 6, the link drive module drives the movable link through the motor to realize the movement and positioning of the picking element in the horizontal direction. The rotation drive module further adjusts the posture of the picking element through the combination of the rotation link and the telescopic link to adapt to the stator cores 10 of different shapes and sizes. This multi-degree-of-freedom and high-precision control method makes the picking process more flexible and efficient. In addition, both the first feeding mechanism 5 and the second feeding mechanism 6 adopt the design of multiple link drive modules surrounding the rotation drive module. This layout not only optimizes the space utilization but also improves the stability and reliability of the picking system. Through the collaborative work of multiple link drive modules, the system can easily handle complex picking tasks and ensure the continuity and stability of the production line.;

[0065] Refer to Figures 11 to 13As shown in the figure, the laminated sheet conveying mechanism 7 includes at least two groups of interconnected conveying lines 71. A positioning component 72 is provided on the conveying line 71, and the positioning component 72 is used to position the assembly jig 8 on the conveying line 71. Specifically, the assembly jig 8 is provided with an assembly driving module 81 and an assembly disk 82. The assembly driving module 81 is used to drive the assembly disk 82 to rotate. An assembly groove 83 is provided on the assembly disk 82. A welding groove 821 is provided outside the assembly groove 83 of the assembly disk 82, and one end of the welding groove 821 communicates with the assembly groove 83. The first feeding mechanism 5 is used to assemble the first stator iron sheet 11 on the assembly groove 83. After each assembly, the assembly driving module 81 drives the assembly groove 83 to rotate to the position of the next first stator iron sheet 11 for feeding. In this embodiment, through the design of at least two groups of interconnected conveying lines 71, the continuous and efficient conveying of the stator iron sheets is realized, ensuring the smooth progress of the production process. This design not only improves the overall production capacity of the production line, but also effectively reduces the material waiting time, shortening the entire production cycle. Secondly, the setting of the positioning component 72 provides a strong guarantee for the accurate positioning of the assembly jig 8 on the conveying line 71. This innovative design ensures that each stator iron sheet can be accurately placed in the predetermined position during the assembly process, thus avoiding production errors caused by inaccurate positioning. This not only improves the qualified rate of the product, but also reduces the additional costs caused by rework. Furthermore, the design of the assembly driving module 81 and the assembly disk 82 integrated on the assembly jig 8 further improves the degree of automation. The assembly driving module 81 can drive the assembly disk 82 to rotate, so that the assembly groove 83 can sequentially reach different feeding positions, thus realizing the automatic assembly of the stator iron sheets. This design not only reduces the labor intensity of workers, but also improves the assembly efficiency, ensuring the consistency and stability of production. In addition, the communication design of the welding groove 821 provided on the assembly disk 82 and the assembly groove 83 facilitates the subsequent welding process. After the stator iron sheets are assembled, the welding operation can be directly carried out through the welding groove 821 without additional handling or adjustment work. This design not only simplifies the production process, but also improves the overall flexibility of the production line.

[0066] The second feeding mechanism 6 is used to assemble the second stator iron sheet 21 onto the first stator iron sheet 11 in the assembly groove 83. After each assembly, the assembly driving module 81 drives the assembly groove 83 to rotate to the position of the next second stator iron sheet 21 for feeding. In this embodiment, the second feeding mechanism 6 can automatically and accurately place the second stator iron sheet 21 onto the first stator iron sheet 11. This process does not require manual intervention, significantly improving the assembly speed. At the same time, after each assembly is completed, the assembly driving module 81 drives the assembly groove 83 to rotate to the next predetermined position to prepare for the next round of assembly. This assembly line operation mode makes the entire production process smoother, reduces the waiting time, and further improves the overall production efficiency. Secondly, in terms of product quality, the precise cooperation between the second feeding mechanism 6 and the assembly groove 83 ensures that each assembly can achieve the accuracy and stability required by the design. This high-precision assembly method not only improves the overall structural strength of the stator core 10 but also reduces the defective rate caused by improper assembly, thereby improving the overall quality of the product.

[0067] Refer to Figure 14As shown in the figure, the welding mechanism 9 includes a pressing module 91 and a welding module 92. The pressing module 91 is used to press and fix the assembled stator core 10 on the assembly jig 8. There are multiple groups of the welding modules 92, and the multiple groups of the welding modules 92 correspond to the welding grooves 821. The welding module 92 includes a welding adjustment module 921, a welding driving module 922, and a welding head 923. The welding driving module 922 is arranged on the welding driving module 922, and the welding head 923 is arranged on the welding driving module 922. The welding driving module 922 is used to drive the welding head 923 to move towards the welding groove 821 to weld and connect the first stator iron ring 1 and the second stator iron ring 2. In this embodiment, the pressing module 91, as a pretreatment link before welding, plays a crucial role. It can accurately and firmly press and fix the carefully assembled stator core 10 on the assembly jig 8, ensuring that the structure of the stator core 10 remains stable during the subsequent welding process, and avoiding poor welding caused by loosening or misalignment. This step not only improves the product qualification rate but also reduces the time wasted due to repeated adjustments, thus accelerating the overall rhythm of the production line. The design of the welding module 92 reflects a high degree of professionalism and flexibility. The configuration of multiple groups of the welding modules 92 enables the production line to handle multiple welding tasks simultaneously, significantly improving the production efficiency. Each group of the welding modules 92 includes a welding adjustment module 921, a welding driving module 922, and a welding head 923. Such a structural design allows for precise welding of welding grooves 821 with different specifications and positions, achieving a high degree of customization and automation. Especially the application of the welding driving module 922, through precise driving control, can smoothly and quickly guide the welding head 923 to move towards the welding groove 821, ensuring that the welding process is both efficient and accurate. This technical feature not only ensures the welding quality between the first stator iron ring 1 and the second stator iron ring 2 but also reduces the material waste and cost increase caused by welding errors. In addition, the overall design of the welding mechanism 9 fully considers the continuity and stability of production. By optimizing the collaborative operation between each module, seamless connection from pressing to welding is achieved, further enhancing the overall efficiency of the production line. The pressing module 91 is provided with a pressing driving cylinder 911, and the pressing driving cylinder 911 is connected with a pressing plate 912. The pressing plate 912 is used to tightly press and fix the stator core 10.

[0068] The blanking mechanism 20 includes a blanking manipulator 201 and a blanking conveyor line 202. The blanking manipulator 201 is used to grab the welded stator core 10 on the assembly jig 8 and place it on the blanking conveyor line 202 for blanking. In this embodiment, relying on its high precision and flexibility, the blanking manipulator 201 can accurately grab the stator core 10 that has completed welding on the assembly jig 8. This operation not only avoids the errors and damages that may be caused by manual operation, but also greatly improves the production efficiency and ensures the stability and consistency of product quality. Secondly, the introduction of the blanking conveyor line 202 realizes the seamless connection of the stator core 10 from the welding station to the subsequent processing procedures. The conveyor line 71 is reasonably designed and operates smoothly, which can ensure that the stator core 10 is not interfered by external forces during the conveying process and avoid damage caused by bumps or stagnation, further guaranteeing product quality. In addition, the overall design of the blanking mechanism 20 fully considers the continuity and smoothness of the production line, effectively reducing the waiting time and resource waste in the production process. Through the close cooperation with the upstream welding equipment and the downstream processing equipment, the full-automatic process of stator core 10 production is realized, significantly improving the production efficiency and production capacity.

[0069] Refer to Figures 1 to 15 As shown, the automatic processing and forming method of the motor stator core includes the following steps:

[0070] Step S1, forming of stator iron sheets: The first punching mechanism 3 punches the first stator iron sheet 11 from the strip material in a stamping manner, and the second punching mechanism 4 punches the second stator iron sheet 21 from the strip material in a stamping manner;

[0071] Step S2, conveying and vibrating sieve of stator iron sheets: After the first punching mechanism 3 punches and forms the first stator iron sheet 11, it vibrates and conveys the sheet-shaped first stator iron sheet 11 towards the first feeding mechanism 5; at the same time, after the second punching mechanism 4 punches and forms the second stator iron sheet 21, it vibrates and conveys the sheet-shaped second stator iron sheet 21 towards the second feeding mechanism 6;

[0072] Step S3, assembly of the first stator iron ring: The first feeding mechanism 5 grabs the first stator iron sheet 11, and after grabbing, places the first stator iron sheet 11 on the assembly jig, and sequentially assembles 12 first stator iron sheets 11 for circumferential combination. After each assembly, the assembly jig rotates 30°, and the next one is assembled until 12 assemblies are completed to form the first stator iron ring;

[0073] Step S4, Assembly of the second stator iron ring: The second feeding mechanism 6 grabs the second stator iron sheets 21. After grabbing, it transfers the second stator iron sheets 21 above the assembly fixture. The assembly fixture rotates 15° so that the third positioning holes 216 correspond to the first positioning holes 116 of two adjacent first stator iron sheets 11, and the second positioning holes 117 correspond to the fourth positioning holes 217; so that the first tooth parts 112 are flush with the second tooth parts 212; then 12 second stator iron sheets 21 are assembled in sequence for circumferential combination. After assembling each one, the assembly fixture rotates 30° to assemble the next one until 12 assemblies are completed to form the second stator iron ring;

[0074] Step S5, Repeat steps S3 to S4 multiple times to stack multiple layers of the first stator iron ring 1 and the second stator iron ring 2 to form the stator core 10;

[0075] Step S6, Welding of the stator core 10: After the stacking of the stator core 10 is completed, the lamination conveying mechanism 7 transports the assembly fixture 8 to the welding mechanism 9, and the welding mechanism 9 welds the outer side of the stator core 10 so that the first stator iron ring 1 and the second stator iron ring 2 are fixedly connected;

[0076] Step S7, Unloading of the stator core 10: After the welding and fixing are completed, the stator core 10 is grabbed and unloaded from the assembly fixture 8 by the unloading mechanism 20.

[0077] Automatic processing and forming method for motor stator core 10. First, in the stator iron sheet forming stage (step S1), a parallel operation mode of double punching mechanisms is adopted, effectively improving material utilization rate and production efficiency. The first punching mechanism 3 and the second punching mechanism 4 respectively punch out the first stator iron sheet 11 and the second stator iron sheet 21 from the strip material. This parallel processing method reduces waiting time and makes the production process more compact and efficient. In the stator iron sheet conveying and vibrating sieve stage (step S2), the vibrating sieve device orderly conveys the stamped stator iron sheets to the corresponding feeding mechanisms, ensuring the smooth progress of the subsequent assembly process. The automated processing of this step not only reduces manual intervention but also improves the accuracy and stability of conveying. In the stator iron ring assembly stage (steps S3 and S4), the first feeding mechanism 5 and the second feeding mechanism 6 are respectively responsible for grasping and placing the first stator iron sheet 11 and the second stator iron sheet 21. By precisely controlling the rotation angle of the assembly fixture 8, the circumferential combination of the stator iron sheets is realized, forming the first stator iron ring 1 and the second stator iron ring 2. This precise assembly method ensures the structural stability and electrical performance of the stator core 10. By repeating steps S3 to S4 multiple times, multiple layers of the first stator iron ring 1 and the second stator iron ring 2 can be laminated to form the required stator core 10 (step S5). This lamination method not only improves the strength and stiffness of the stator core 10 but also makes its electrical performance more excellent. At the same time, the automated lamination process reduces errors caused by manual operations, improving the consistency and reliability of the product. In the stator core 10 welding stage (step S6), the welding mechanism 9 welds the outer side of the stator core 10, ensuring a firm connection between the first stator iron ring 1 and the second stator iron ring 2. This welding method not only improves the overall strength of the stator core 10 but also avoids electrical failures caused by poor connection. At the same time, the automated welding process reduces the generation of welding deformation and defects, improving the welding quality and durability of the product. Finally, after the welding is completed and fixed, the stator core 10 is grasped and unloaded from the assembly fixture 8 by the unloading mechanism 20 (step S7). The automated processing of this step not only improves production efficiency but also ensures the safety and stability of the stator core 10 during conveying and storage. In step S4, the third positioning hole and the first positioning hole are positioned by mating bosses, and the fourth positioning hole and the second positioning hole are positioned by mating bosses.

[0078] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

1. An automatic processing and forming method for a motor stator core, characterized in that: The stator core is formed by sequentially laminating a plurality of first stator iron rings and a plurality of second stator iron rings; the first stator iron rings are formed by circumferentially connecting a plurality of first stator iron sheets, and the second stator iron rings are formed by circumferentially connecting a plurality of second stator iron sheets; the first stator iron sheet includes a first yoke, a first tooth portion, and a first pole shoe. On both sides of the first yoke, there are a first connection groove and a first connection boss. Adjacent two first stator iron sheets are spliced through the first connection groove and the first connection boss. The first yoke is arc-shaped, the first tooth portion is connected to one side of the first yoke, and the included angle between the axis tangent of the first tooth portion and the axis tangent of the first yoke is 10°; the second stator iron sheet includes a second yoke, a second tooth portion, and a second pole shoe. On both sides of the second yoke, there are a second connection groove and a second connection boss. Adjacent two second stator iron sheets are spliced through the second connection groove and the second connection boss. The second yoke is arc-shaped, the second tooth portion is connected to one side of the second yoke, and the included angle between the axis tangent of the second tooth portion and the axis tangent of the second yoke is 10°; the second yoke is arranged on two adjacent first yokes so that the second tooth portion corresponds to the first tooth portion; On the same diameter line as the first connection groove and the first connection boss of the first yoke, there are three first positioning holes, and the three first positioning holes are evenly distributed along the circumference of the first yoke. The first tooth portion is provided with a second positioning hole, and the second positioning hole and the adjacent first positioning hole are on the same coaxial tangent line; On the same diameter line as the second connection groove and the second connection boss of the second yoke, there are three third positioning holes, and the three third positioning holes are evenly distributed along the circumference of the second yoke. The second tooth portion is provided with a fourth positioning hole, and the fourth positioning hole and the adjacent third positioning hole are on the same coaxial tangent line; The automatic processing and forming method of the motor stator core is completed by an automatic processing device. The automatic processing device includes a first punching mechanism, a second punching mechanism, a first feeding mechanism, a second feeding mechanism, a lamination conveying mechanism, an assembly jig, a welding mechanism, and a blanking mechanism. The first punching mechanism is used to punch and form the first stator iron sheet, the second punching mechanism is used to punch and form the second stator iron sheet, the assembly jig is arranged on the lamination conveying mechanism, and the lamination conveying mechanism is used to drive the assembly jig to circulate and transport. The first feeding mechanism is used to grab the first stator iron sheet punched by the first punching mechanism and place it on the assembly jig to assemble into a first stator iron ring. The second feeding mechanism is used to grab the second stator iron sheet punched by the second punching mechanism and place it on the first stator iron ring on the assembly jig for stacking to form a second stator iron ring; the welding mechanism welds a plurality of mutually laminated first stator iron rings and second stator iron rings to form a stator core, and the blanking mechanism is used to take out and blank the stator core assembled on the assembly jig; The automatic processing and forming method of the motor stator core includes the following steps: Step S1, forming of stator iron sheets: The first punching mechanism punches the first stator iron sheet from the strip material in a stamping manner, and the second punching mechanism punches the second stator iron sheet from the strip material in a stamping manner; Step S2, conveying and vibrating sieve of stator iron sheets: After the first punching mechanism punches the first stator iron sheet, it vibrates the sheet-shaped first stator iron sheet and conveys it towards the first feeding mechanism; at the same time, after the second punching mechanism punches the second stator iron sheet, it vibrates the sheet-shaped second stator iron sheet and conveys it towards the second feeding mechanism; Step S3, assembling of the first stator iron ring: The first feeding mechanism grabs the first stator iron sheet, and after grabbing, places the first stator iron sheet on the assembling fixture. Twelve first stator iron sheets are assembled in a circumferential combination in sequence. After assembling one each time, the assembling fixture rotates 30°, and the next one is assembled until 12 assemblies are completed to form the first stator iron ring; Step S4, assembling of the second stator iron ring: The second feeding mechanism grabs the second stator iron sheet, and after grabbing, transfers the second stator iron sheet above the assembling fixture. The assembling fixture rotates 15° so that the third positioning hole corresponds to the first positioning holes of two adjacent first stator iron sheets, and the second positioning hole corresponds to the fourth positioning hole; so that the first tooth part is flush with the second tooth part; then twelve second stator iron sheets are assembled in a circumferential combination in sequence. After assembling one each time, the assembling fixture rotates 30°, and the next one is assembled until 12 assemblies are completed to form the second stator iron ring; Step S5, repeat steps S3 to S4 multiple times to stack multiple layers of the first stator iron ring and the second stator iron ring to form the stator core; Step S6, welding of the stator core: After the stacking of the stator core is completed, the stacking and conveying mechanism transports the assembling fixture to the welding mechanism, and the welding mechanism welds the outer side of the stator core so that the first stator iron ring and the second stator iron ring are fixedly connected; Step S7, blanking of the stator core: After the welding and fixing are completed, the stator core is grabbed and blanked from the assembling fixture by the blanking mechanism.

2. The automatic processing and forming method of the motor stator core according to claim 1, characterized in that: One end of each of the first positioning hole, the second positioning hole, the third positioning hole, and the fourth positioning hole is formed with a mating flange by stamping, and the mating flange is used for positioning and mating between adjacent first stator iron rings and second stator iron rings; In step S4, the third positioning hole and the first positioning hole are positioned and mated through a mating boss, and the fourth positioning hole and the second positioning hole are positioned and mated through a mating boss.

3. The automatic processing and forming method of the motor stator core according to claim 2, wherein: When the first stator iron ring and the second stator iron ring are stacked, the second yoke is positioned and mated with two adjacent first positioning holes through the third positioning hole so that the first tooth part is aligned with the second tooth part and the second positioning hole is mated with the fourth positioning hole.

4. The automatic processing and forming method of the motor stator core according to claim 1, characterized in that: The first punching sheet mechanism includes a first material unwinding assembly, a first punching assembly, a first punching die, a first material receiving and conveying assembly, a first vibrating sieve assembly, and a first discharging tray; the first material unwinding assembly is used to feed the material towards the first punching die, the first punching die is arranged on the first punching assembly, the first punching assembly is used to drive the first punching die to punch the material into the first stator iron sheet, and it falls into the first material receiving and conveying assembly, the first material receiving and conveying assembly conveys the first stator iron sheet to the first vibrating sieve assembly, the first vibrating sieve assembly screens the direction of the first stator iron sheet through vibration, and the first discharging tray is used to place the first stator iron sheet with the adjusted direction; the first feeding mechanism is used to grab the first stator iron sheet on the first discharging tray.

5. The automatic processing and forming method of the motor stator core according to claim 4, characterized in that: The second punching sheet mechanism includes a second material unwinding assembly, a second punching assembly, a second punching die, a second material receiving and conveying assembly, a second vibrating sieve assembly, and a second discharging tray; the second material unwinding assembly is used to feed the material towards the second punching die, the second punching die is arranged on the second punching assembly, the second punching assembly is used to drive the second punching die to punch the material into the second stator iron sheet, and it falls into the second material receiving and conveying assembly, the second material receiving and conveying assembly conveys the second stator iron sheet to the second vibrating sieve assembly, the second vibrating sieve assembly screens the direction of the second stator iron sheet through vibration, and the second discharging tray is used to place the second stator iron sheet with the adjusted direction; the second feeding mechanism is used to grab the second stator iron sheet on the second discharging tray.

6. The automatic processing and forming method of the motor stator core according to claim 1, characterized in that: The first feeding mechanism includes a first material picking frame, a first detection module, a first material picking fixing frame, a first link driving module, a first rotation driving module, and a first material picking element. The first detection module is arranged on the first material picking frame. The first detection module is a detection camera and faces the first discharging tray to provide the position and direction for material picking to the first link driving module and the first rotation driving module. The first material picking fixing frame is arranged at the top of the first material picking frame. The first link driving module and the first rotation driving module are both arranged on the first material picking fixing frame. There are multiple groups of the first link driving modules, and multiple groups of the first link driving modules are arranged around the first rotation driving module. The first link driving module includes a first link driving motor, a first movable link, and a second movable link. The driving end of the first link driving motor is connected to the first movable link. One end of the second movable link is hinged to the first movable link, and the other end is connected to the first material picking element. The first rotation driving module includes a first rotation driving motor, a first rotation link, and a first telescopic link. The first rotation driving motor is connected to the first rotation link. One end of the first telescopic link is movably connected to the first rotation link, and the other end is connected to the first material picking element through a universal joint.

7. The automatic processing and forming method of the motor stator core according to claim 6, characterized in that: The second feeding mechanism includes a second material taking rack, a second detection module, a second material taking fixing rack, a second link driving module, a second rotation driving module, and a second material taking element. The second detection module is arranged on the second material taking rack. The second detection module is a detection camera and faces the second material discharging tray to provide the position and direction for material taking required by the second link driving module and the second rotation driving module. The second material taking fixing rack is arranged at the top of the second material taking rack. The second link driving module and the second rotation driving module are both arranged on the second material taking fixing rack. There are multiple groups of the second link driving modules, and multiple groups of the second link driving modules are arranged around the second rotation driving module. The second link driving module includes a second link driving motor, a third movable link, and a fourth movable link. The driving end of the second link driving motor is connected to the third movable link. One end of the second movable link is hinged to the second movable link, and the other end is connected to the second material taking element. The second rotation driving module includes a second rotation driving motor, a second rotation link, and a second telescopic link. The second rotation driving motor is connected to the second rotation link. One end of the second telescopic link is movably connected to the second rotation link, and the other end is connected to the second material taking element through a universal joint.

8. The automatic processing and forming method of the motor stator core according to claim 1, characterized in that: The laminated sheet conveying mechanism includes at least two groups of interconnected conveying lines. A positioning component is arranged on the conveying line, and the positioning component is used for positioning the assembly fixture on the conveying line. The assembly fixture is provided with an assembly driving module and an assembly disk. The assembly driving module is used to drive the assembly disk to rotate. Assembly grooves are arranged on the assembly disk. Welding grooves are arranged outside the assembly grooves on the assembly disk, and one end of the welding groove communicates with the assembly groove. The first feeding mechanism is used to assemble the first stator iron sheets on the assembly grooves. After each assembly, the assembly driving module drives the assembly grooves to rotate to the position of the next first stator iron sheet for feeding. The second feeding mechanism is used to assemble the second stator iron sheets on the first stator iron sheets in the assembly grooves. After each assembly, the assembly driving module drives the assembly grooves to rotate to the position of the next second stator iron sheet for feeding.

9. The automatic processing and forming method of the motor stator core according to claim 8, characterized in that: The welding mechanism includes a pressing module and a welding module. The pressing module is used to press and fix the assembled stator core on the assembly fixture. There are multiple groups of the welding modules, and multiple groups of the welding modules correspond to the welding grooves. The welding module includes a welding adjustment module, a welding driving module, and a welding head. The welding driving module is arranged on the welding driving module, and the welding head is arranged on the welding driving module. The welding driving module is used to drive the welding head to move towards the welding groove to weld and connect the first stator iron ring and the second stator iron ring.

10. The automatic processing and forming method of the motor stator core according to claim 1, characterized in that: The discharging mechanism includes a discharging manipulator and a discharging conveying line. The discharging manipulator is used to grab the welded stator core on the assembly fixture and place it on the discharging conveying line for discharging.

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