Stator assembly and method and apparatus for machining a motor stator

Abstract

The application discloses a kind of stator assembly and motor stator processing method and equipment, it is related to motor manufacturing technical field, wherein, the method includes: preparation stator core, coil, welding sleeve and wiring assembly;By first welding fixture, the end of multiple adjacent coils is placed into welding sleeve and is welded using resistance welding, and coil assembly is formed;Repeat the above steps to obtain the target number of coil assembly;The coil assembly is fixed in stator core tooth part and is pre-connected with wiring assembly;Again by second welding fixture, stator semi-finished product and wiring assembly are put into resistance welding machine as a whole, welding is completed, and stator finished product is obtained.The equipment includes welding fixture, processing main body and welding machine, and is processed by the processing main body with multiple processing positions in cooperation with welding fixture and welding machine, to make stator assembly.The method and equipment realize the quick assembly of coil and efficient resistance welding.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing technology, and in particular to a stator assembly and a method and equipment for processing motor stators. Background Technology

[0002] In existing winding manufacturing processes, since enameled wire is typically used for windings, manual cutting and grinding to remove the insulation layer are required before welding. Then, each coil is manually welded according to the wiring method. This process is time-consuming and labor-intensive, resulting in numerous and disorganized wire ends during welding, complex wiring requirements, and a high risk of errors during manual operation. After welding, manual tidying of the wiring and excess wire ends is still necessary, further increasing working hours and reducing production efficiency and yield. Therefore, there is an urgent need for a stator assembly and motor stator processing method and equipment that can reduce manual operation steps, simplify the process flow, and improve production efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide a stator assembly and a method and equipment for processing motor stators, which aims to reduce manual operation steps, simplify the process flow and improve production efficiency.

[0004] To achieve the above objectives, the present invention proposes a method for machining an electric motor stator, comprising: Preparation steps: Prepare stator core, multiple coils, welding sleeves, and wiring assemblies; Initial assembly steps: Select the target number of coils and place them on the first welding fixture in a preset order. Insert the end leads of two adjacent coils into the welding sleeve. Place the first welding fixture on the first welding machine and weld the end leads and welding sleeve of each pair of adjacent coils to connect the two adjacent coils and form a coil assembly. Repeat the initial assembly steps to obtain the target number of coil assemblies; Assembly steps: Place the target number of coil assemblies into the stator core, and fix the target number of coil assemblies onto the stator core by applying a polymer coating. Pre-connect the end leads of two adjacent coil assemblies to the wiring assembly to form a stator semi-finished product. Fix the stator semi-finished product onto the second welding fixture, place the second welding fixture on the second welding machine, and weld the end leads of two adjacent coil assemblies to the wiring assembly using the second welding machine.

[0005] In one embodiment, the first welding fixture is provided with a first welding plate, the first welding plate having a plurality of coil positioning blocks and a plurality of wire storage blocks, the plurality of coil positioning blocks being arranged along a first direction, the plurality of wire storage blocks being arranged along a first direction, the wire storage blocks having wire storage grooves, the plurality of coil positioning blocks and the plurality of wire storage blocks being spaced apart along a second direction, the first direction and the second direction being parallel; The process involves selecting a target number of coils and placing them on a first welding fixture in a preset order. The end leads of adjacent coils are inserted into welding sleeves. The first welding fixture is then placed on a first welding machine to weld the end leads and welding sleeves of each pair of adjacent coils, connecting them to form a coil assembly. Select a target number of coils and place them on multiple coil positioning blocks of the first welding fixture in a preset order to form a coil assembly, wherein a welding sleeve is provided between every two adjacent coils; The end leads of two adjacent coils are passed through the welding sleeve and secured in the wire storage slot of the corresponding wire storage block; The first welding fixture is placed into the first welding machine, and the first welding machine is controlled to weld the welding sleeve position based on the set welding parameters so that the end leads of the two adjacent coils are connected to each other. The end lead of the coil is cut off from the section between the welding sleeve and the wire storage block, while retaining the welding sleeve. Multiple coils after cutting are interconnected through the welding sleeve to form a coil assembly.

[0006] In one embodiment, the step of placing a target number of coil assemblies into the stator core, fixing the target number of coil assemblies to the stator core by coating with a polymer, and pre-connecting the end leads of two adjacent coil assemblies to the wiring assembly to form a stator semi-finished product includes: Multiple coil assemblies are sequentially fitted onto multiple teeth of the stator core until all teeth are fitted with the coils. Pre-connect the end leads of two adjacent coil assemblies to the wiring assembly; By coating the coil and the teeth with a polymer, the coil assembly is solidified in the stator core to form a stator semi-finished product.

[0007] In one embodiment, the step of fixing the stator semi-finished product onto the second welding fixture, placing the second welding fixture onto the second welding machine, and welding the end leads of two adjacent coil assemblies to the wiring assembly using the second welding machine includes: Align the stator semi-finished product with the core positioning hole and position it on the core positioning part; The second welding fixture, along with the stator semi-finished product and wiring assembly located on it, are placed onto the second welding machine, and the end leads of two adjacent coil assemblies are welded to the wiring assembly using the second welding machine.

[0008] The present invention also proposes a motor stator processing equipment, including a processing body, a first welding fixture, a second welding fixture, a first welding machine and a second welding machine; The processing body has multiple processing positions, and the processing body is used to control the first welding fixture and the second welding fixture to be transferred between the processing positions. The processing body is used to place the first welding fixture in the first assembly position, insert the end leads of two adjacent coils into the welding sleeve, and also to place the first welding fixture on the first welding machine. The first welding machine is used to weld the end leads and welding sleeves of each pair of adjacent coils to connect the two adjacent coils and form a coil assembly. The processing body is also used to place a target number of coil assemblies into the stator core, and fix the target number of coil assemblies onto the stator core by coating with a polymer, and pre-connect the end leads of two adjacent coil assemblies to the wiring assembly to form a stator semi-finished product, and fix the stator semi-finished product onto a second welding fixture, place the second welding fixture on a second welding machine, and weld the end leads of two adjacent coil assemblies to the wiring assembly by the second welding machine.

[0009] In one embodiment, the first welding fixture includes: A first welding plate, a sequence of positioning blocks disposed in a first direction of the first welding plate, and a sequence of wire storage blocks disposed in a second direction of the first welding plate; A welding sleeve is provided between adjacent positioning blocks in the positioning block sequence; The interval between the storage block sequence and the positioning block sequence is set. The wire storage block is provided with a wire storage groove, which is used to fix the end leads extending from both ends of the coil. The first direction is parallel to the second direction.

[0010] In one embodiment, the stator core comprises: An annular yoke, and a plurality of teeth provided at one axial end of the annular yoke; The multiple teeth constitute a coil placement platform; The coil placement platform is provided with multiple wiring assemblies, and the wiring assemblies are also pre-connected to the end leads of the coil assemblies for welding two coil assemblies together. The connection part between the wiring assembly and the main body is made of insulating material, and the connection part between the wiring assembly and the end lead wire is made of conductive material; The coil assembly is fixed inside the body cavity by applying a polymer coating to the coil and welding it to the wiring assembly, forming a stator semi-finished product.

[0011] In one embodiment, the second welding fixture includes: The second welding plate, and the core positioning part, the terminal block placement platform and the wiring assembly provided on the second welding plate; The core positioning part is provided with a core positioning hole for aligning and placing the stator core into the second welding plate. The second welding plate, in conjunction with a welding machine, welds the two end leads to the wiring assembly, forming a conductive connection between the two end leads to create a stator assembly.

[0012] In one embodiment, the plurality of processing stations include: The loading station is used to place the stator core, coil, welding sleeve and wiring assembly in sequence in the processing line; The first assembly position is used to install the coil into the positioning block located on the first welding fixture, and to pass the end lead wire between two adjacent coils through the welding sleeve and into the wire storage groove on the wire storage block. The first welding position is equipped with a first welding machine, which controls the first welding fixture and the welding machine to weld the end leads of two adjacent coils onto the welding sleeve to form a coil assembly; The second assembly position is used to install the coil assembly onto the iron core tooth section and position the end lead wire, and to install the wiring assembly on the terminal block placement platform. The insulation treatment area is used to apply a polymer between the coil and the iron core teeth to form a stator semi-finished product, so as to strengthen the coil and improve the insulation performance. The third assembly position is used to place the stator semi-finished product into the core positioning part in the second welding fixture; The second welding position is equipped with a second welding machine, which is used to weld the end lead wire of the coil assembly to the wiring assembly in cooperation with the second welding fixture to form the stator assembly. The inspection station is used to inspect the electrical performance and appearance of the stator core after welding and insulation. The unloading position is used to remove the completed stator assembly from the processing line; The conveying component passes through each processing station sequentially, and is used to transport the stator assembly or its components to the corresponding processing station in sequence and to the next processing station after the process is completed.

[0013] The present invention also proposes a stator assembly, comprising: The stator core is formed by stacking and fixing several core laminations in sequence. Its inner circumference is provided with a coil placement platform, and its outer circumference is provided with a terminal block placement platform. Multiple coils are respectively embedded in the coil placement platform and evenly distributed along the circumference of the stator core; The wiring assembly has an insulated first end placed on the terminal block platform, and a second end leading out of the end lead of the coil. The coils are electrically connected to each other and to the wiring assembly by welding. A polymer coating is applied between the stator core and the coil to fix the coil in the stator core.

[0014] The technical solution of this invention achieves rapid connection of enameled wires by directly evaporating the insulation layer through resistance welding, thus avoiding time-consuming manual polishing.

[0015] By employing pre-welding of coil assemblies and positioning of terminal blocks, wiring becomes orderly and human error in wiring is reduced.

[0016] By utilizing the structure of the fixture and terminal block, the wiring process is completed during soldering, eliminating the need for additional wire management.

[0017] By using fixtures in conjunction with the automatic movement of the welding machine, multi-point automatic welding can be achieved, improving production efficiency and product consistency, and reducing reliance on human skill levels. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A flowchart of the processing method provided by the present invention; Figure 2 This is a flowchart of the initial assembly step in the processing method provided by the present invention; Figure 3 This is a flowchart of the assembly steps in the processing method provided by the present invention; Figure 4 A schematic diagram of the first welding fixture structure for placing coil assemblies provided by the present invention; Figure 5 This is a schematic diagram of the structure of the coil assembly provided by the present invention; Figure 6 A schematic diagram of the first welding fixture structure for welding coil assemblies with electrodes provided by the present invention; Figure 7 This is a schematic diagram illustrating the working principle of resistance welding provided by the present invention; Figure 8 This is a schematic diagram of the structure of the second welding fixture provided by the present invention; Figure 9A schematic diagram of the structure of the second welding fixture with a wiring assembly mounted on a terminal block placement platform provided by the present invention; Figure 10 This is a schematic diagram of the structure of the second welding fixture for machining stator cores provided by the present invention. Figure 11 A schematic diagram of the process flow of the main body of the assembly line provided by the present invention; Figure 12 This is a schematic diagram of the stator assembly provided by the present invention.

[0020] Explanation of icon numbers:

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] When producing motor stator windings, workers first fit the coils onto the iron core teeth and fix them in place with glue. Then, they weld the individual coils together according to a specific pattern to form a complete stator winding. However, several drawbacks in this process restrict the improvement of production efficiency and yield: 1. Because the coil is wound with enameled wire, it is necessary to cut the wire and grind it before soldering to remove the insulation layer, which is very time-consuming. 2. There are many messy wire ends during soldering, the wiring requirements are complicated, and it is very easy to make mistakes if the operation takes a long time; 3. After welding, it is necessary to clean up the wiring and excess wire ends, which wastes time.

[0026] To address the aforementioned issues, this invention employs pre-welding of coil assemblies and positioning of terminal blocks, ensuring orderly wiring and reducing human error in wiring.

[0027] It also uses resistance welding to directly evaporate the insulation layer, enabling rapid connection of enameled wires and avoiding time-consuming manual polishing.

[0028] By utilizing the structure of the fixture and terminal block, the wiring process is completed during soldering, eliminating the need for additional wire management.

[0029] By using fixtures in conjunction with the automatic movement of the welding machine, multi-point automatic welding can be achieved, improving production efficiency and product consistency, and reducing reliance on human skill levels.

[0030] like Figure 1 As shown, this invention proposes a method for machining a motor stator, comprising: Preparation steps: First, prepare the stator core. The stator core is preferably a ring-shaped structure formed by stacking several layers of stamped silicon steel sheets, with multiple stator slots evenly spaced along its inner circumference. Teeth are formed between the stator slots to accommodate and support the winding coils. Before processing, the stator core can be molded and insulated to ensure the reliability of subsequent winding and welding operations.

[0031] Secondly, prepare multiple coils. These coils can be made of enameled copper wire or other materials with excellent conductivity, and their shape and size should match the stator slots. During the preparation stage, the multiple coils can be wound according to a predetermined number of turns and arrangement, with a certain length of lead wire reserved at the ends for subsequent connection to the wiring assembly.

[0032] Next, prepare the welding sleeve. The welding sleeve is an auxiliary fixture, which can be a metal ring or a segmented clamp. It is used to position and constrain the ends of multiple coils during the welding process to ensure accurate welding point positioning and uniform force, and to avoid welding defects caused by thermal deformation or loosening during the welding process.

[0033] Finally, prepare the wiring assembly. The wiring assembly can be a terminal block, busbar, or connector, made of a heat-resistant and conductive metal material. It is used to reliably connect to the leads of multiple coils, thereby forming the electrical output terminals of the stator assembly. This wiring assembly can be pre-fabricated during the preparation stage and can be used in conjunction with welding sleeves to improve the efficiency and consistency of subsequent assembly and welding processes.

[0034] The preparation step can utilize stator cores, coils, and soldering sleeves of different specifications. For example, the number of coils can be 6, 9, or more; the soldering sleeves can be copper, stainless steel, or other metal sleeves; and the wiring components can be terminals, wire bars, or PCB interface structures. All of these components can be selected and pre-processed during the preparation step according to product requirements.

[0035] In one embodiment, the preparation step may further be: First, place the pre-processed stator core on the support platform. Take out the target number of coils and clean and tin-plate the ends of the coils to remove the insulating varnish layer and ensure reliable welding. Then, take out several welding sleeves and clean their inner walls. Finally, prepare the wiring assemblies that match the ends of the coils. All the above components are arranged in sequence at the workstation for subsequent operations.

[0036] In another embodiment, the preparation step may also be: The stator core is transported to the worktable by an automated feeding device; multiple coils output by the winding equipment are arranged in sequence and then conveyed to the designated position after the paint stripping and plating processes; the welding sleeve is automatically unloaded from the hopper and sent to the welding position; the wiring assembly is taken out from the storage area by a robot and placed in the preset tooling to complete all the preparations before welding.

[0037] Initial installation steps: Select the target number of coils. Based on the number of slots in the stator core and the motor design requirements, prepare multiple corresponding coils in advance; for example, a twelve-slot stator corresponds to twelve coils. All coils have been processed according to the predetermined number of turns and winding direction, and leads are pre-installed at the ends.

[0038] The coils are placed on the first welding fixture in a preset order. The first welding fixture is a specially designed positioning fixture with multiple limiting grooves or locking structures to accommodate the coils one by one. During operation, the operator places the coils one by one on the fixture according to the coil arrangement drawing to ensure that the relative position of each coil is consistent with the subsequent arrangement of the stator core.

[0039] Insert the end leads of two adjacent coils into the welding sleeve. After placement, each pair of adjacent coils will have a corresponding connection point. Then, simultaneously insert both lead leads into the pre-set welding sleeve, allowing them to adhere and remain stable under the constraint of the sleeve. The welding sleeve is generally a metal tube with good conductivity and mechanical strength, ensuring uniform stress and a strong weld during welding.

[0040] The first welding fixture is placed on the first welding machine. The first welding machine can be an automated welding device, whose worktable mates with the bottom of the fixture, so that the fixture is fixed in place, facilitating precise execution of the welding process.

[0041] Finally, the end leads and welding sleeves of each pair of adjacent coils are welded using a first welding machine. During the welding process, the welding electrodes contact the welding sleeve, and through heating or resistance welding, the two leads inside the sleeve are fused together and firmly bonded to the sleeve body. This process effectively ensures that each pair of adjacent coils is reliably electrically connected, thus forming a coil assembly. This coil assembly can be integrally embedded into the stator core in subsequent steps, enabling further processing of the stator assembly.

[0042] The above steps ensure the consistency of connections and welding reliability between the coils, and improve the processing efficiency and product quality of the stator assembly.

[0043] After completing the aforementioned initial installation steps, continue with the following operations: In the initial assembly step, each operation can form a set of coil assemblies, that is, a sub-unit formed by welding several adjacent coils together with welding sleeves. In order to meet the total number of coils required for the stator core assembly, the above initial assembly step needs to be repeated, that is, the target number of coils are selected again, placed sequentially on the first welding fixture, and the lead wire insertion, welding sleeve fixing and welding machine welding processes are completed in sequence.

[0044] By repeating this process multiple times, several coil assemblies can be gradually obtained. Each coil assembly includes several coil units, and adjacent coils are electrically connected by welding sleeves to form an independent and complete electrical connection subset. As the number of repetitions increases, until all the required number of coils has been processed, the target number of coil assemblies can be obtained.

[0045] By employing the aforementioned repetitive processes, not only is the consistency and standardization of each coil component ensured, but processing efficiency is also significantly improved. Compared to the traditional method of manually connecting each coil individually, this invention achieves batch and modular operation through the use of fixtures and welding equipment. This facilitates the subsequent unified assembly of multiple coil components into the stator core, thereby completing the manufacturing of the stator assembly.

[0046] After obtaining the target number of coil assemblies, these coil assemblies are sequentially placed into the slots of the stator core. To ensure stable positioning of the coil assemblies during assembly, a polymer is applied between the inner wall of the stator core and the outer surface of the coil assemblies before or during assembly. This polymer has excellent insulation and adhesion properties, and after curing, it can firmly fix each coil assembly to the stator core, preventing loosening or displacement during subsequent welding or operation of the coil assemblies.

[0047] The end leads of two adjacent coil assemblies are pre-connected to the wiring assembly according to a preset arrangement. This pre-connection can be achieved by insertion, snap-fit, or temporary crimping, ensuring that each lead and wiring assembly corresponds reasonably in spatial position, facilitating subsequent unified welding operations. After the above operations, a stator semi-finished product with basic structure but not yet completed final electrical connection is formed.

[0048] The stator semi-finished product is fixed onto a second welding fixture, which stably supports the stator semi-finished product during welding, ensuring that the relative positions of the coil assembly and the wiring assembly remain consistent and preventing welding misalignment. Subsequently, the second welding fixture is placed on a second welding machine, which welds the end leads of adjacent coil assemblies to the wiring assembly. The welding process can employ resistance welding, spot welding, or other welding techniques suitable for high-current conductors to ensure the reliability and stability of the electrical connection.

[0049] like Figure 2 As shown, in an embodiment of the present invention, the steps of selecting a target number of coils and placing them on a first welding fixture in a preset order, inserting the end leads of two adjacent coils into welding sleeves, and placing the first welding fixture on a first welding machine to weld the end leads and welding sleeves of each pair of adjacent coils to connect the adjacent coils and form a coil assembly include: The first welding fixture includes a flat first welding plate. Multiple coil positioning blocks are arranged sequentially along a first direction on this first welding plate to precisely define the position of the coil during assembly. Simultaneously, multiple wire storage blocks are also arranged along the first direction, each with a wire storage groove for temporarily holding the lead wire at the end of the coil. The multiple coil positioning blocks and multiple wire storage blocks are spaced apart along a second direction, and the first and second directions are arranged parallel to each other, thus forming a regular positioning and wire storage structure to facilitate efficient processing of the coil assembly.

[0050] During the initial assembly of the coil assembly, the target number of coils is first selected according to process requirements. Following a preset arrangement sequence, each coil is placed sequentially on multiple coil positioning blocks of the first welding fixture, arranging the coils along a first direction to form the initial shape of the coil assembly. Welding sleeves are pre-fitted between adjacent coils for subsequent welding of the end leads.

[0051] Next, the end leads of each pair of adjacent coils are threaded through the corresponding welding sleeves, and the excess portion is further secured in the wire storage slot of the corresponding wire storage block to achieve temporary fixation and standardize the lead wire routing. This structure ensures the stability of the lead wires and facilitates subsequent automatic welding operations.

[0052] Then, the first welding fixture is placed into the first welding machine, and based on preset welding parameters, the welding machine is started to weld the welding sleeve, so that the end leads of adjacent coils form a reliable conductive connection at the welding sleeve. In this way, multiple coils gradually form a stable coil assembly.

[0053] After welding, the lead wire section between the welding sleeve and the wire storage block is cut to remove redundant wires, retaining the welding sleeve and its connected conductive parts. After cutting, multiple coils are interconnected through the welding sleeve, forming a complete coil assembly, ready for subsequent assembly into the stator core.

[0054] like Figure 3 As shown, in an embodiment of the present invention, the target number of coil assemblies obtained above are first sequentially assembled into the stator core. Specifically, the stator core includes an annular yoke, and a plurality of teeth are evenly spaced at one axial end of the annular yoke. The coil assemblies are sequentially fitted onto the corresponding teeth, ensuring that one coil assembly is fixed on each tooth.

[0055] Secondly, pre-connections are made between the end leads of two adjacent coil assemblies and multiple wiring assemblies located on the annular yoke. Specifically, the operator pre-inserts or overlaps the end leads of the coil assemblies to the pre-connection terminals of the corresponding wiring assemblies to form a reliable pre-assembly structure, providing a stable electrical connection basis for subsequent welding processes.

[0056] Next, a polymer, such as epoxy resin or a high-temperature resistant curing insulating adhesive, is applied to the gap between the coil assembly and the teeth. After curing, the polymer firmly bonds the coil assembly to the stator core, achieving mechanical fixation and electrical insulation, thus forming a pre-formed stator semi-finished product.

[0057] After the stator semi-finished product is prepared, it is fixed on the second welding fixture. The second welding fixture is designed according to the shape of the stator core and can limit and position the stator semi-finished product in the circumferential or radial direction to avoid displacement caused by thermal expansion or stress during the welding process.

[0058] Subsequently, the second welding fixture, on which the stator semi-finished product is mounted, is placed on the second welding machine. During the welding process, the operator controls the second welding machine to weld the contact points of the end leads and wiring components of two adjacent coil assemblies according to the set welding current, welding time, and pressure parameters, so as to form a strong metal fusion connection.

[0059] The polymer can be epoxy resin, polyimide, or silicone resin, which is applied to the inner wall of the stator core slot and the outer periphery of the coil assembly by means of dispensing, spraying, or impregnation, respectively, to achieve reliable fixation of the coil assembly in the stator core.

[0060] The second welding fixture may be equipped with an adjustable clamping device for mechanically positioning the stator semi-finished product and wiring assembly before welding, so as to ensure that the welding point spacing is consistent, avoid welding offset, and improve the overall welding accuracy and consistency.

[0061] In another embodiment, the pre-connection of the end leads of two adjacent coil assemblies to the wiring assembly can be achieved by: inserting a welding sleeve to achieve physical positioning, using a clamping positioning block for temporary fixation, or using an automatic dispensing device to apply a small amount of flux to ensure the reliability of subsequent welding.

[0062] The present invention also proposes a motor stator processing equipment, which includes a device and a processing method acting on the device. The specific process of the processing method is as described in the above embodiments. Since the embodiments of this processing equipment adopt all the technical solutions of all the above embodiments, they have at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0063] The motor stator processing equipment provided by the present invention includes a processing body, a first welding fixture, a second welding fixture, a first welding machine, and a second welding machine; The processing body is provided with multiple processing positions, such as an assembly position, a first welding position, and a second welding position. The processing body is equipped with a transmission mechanism, such as a robot, a conveying platform, or a rotary table, to control the transfer of the first welding fixture and the second welding fixture between the processing positions, thereby realizing continuous processing of the process.

[0064] In practical applications, the processing body can be used to accurately place the first welding fixture at the first assembly position, enabling the operator or automatic feeding mechanism to insert the end leads of two adjacent coils into preset welding sleeves. Subsequently, the processing body further drives the first welding fixture to the first welding machine, ensuring that the end leads of each pair of adjacent coils are precisely aligned with the corresponding welding sleeves.

[0065] The first welding machine is preferably a resistance welding machine or a laser welding machine, used to reliably weld the end leads of two adjacent coils within the welding sleeve to the welding sleeve. Through this process, the two adjacent coils are firmly connected, resulting in a coil assembly with a stable structure.

[0066] After forming multiple coil assemblies, the processing body can also be used to assemble the target number of coil assemblies one by one onto multiple teeth of the stator core. To ensure that the coil assemblies are fixed in the stator core, a polymer adhesive can be applied between the stator core teeth and the coils during the assembly process using a spraying device or a dispensing device. After curing, a reliable bond between the coil assemblies and the stator core can be achieved.

[0067] Furthermore, the processing body can control the end leads of the coil assembly to be pre-connected to the wiring assembly on the stator core, for example by plugging, positioning clips or temporary solder joints, to form a stator semi-finished product with basic electrical connection.

[0068] Subsequently, the processing unit is used to fix the stator semi-finished product onto the second welding fixture, and then transfer the second welding fixture to the worktable of the second welding machine. The second welding machine can be a multi-point resistance welding machine or a laser welding machine, which can realize the automated welding of the end leads and wiring components of multiple adjacent coil assemblies, thereby forming a stator finished product with complete electrical performance.

[0069] Through the above embodiments, the motor stator processing equipment can realize the automatic welding and assembly of coil components and the final welding of stator semi-finished products, which greatly improves processing efficiency, reduces manual operation intensity, and ensures the reliability and consistency of stator welding connection.

[0070] The wire of the coil can be a flat wire, a square wire, a polygonal cross-section wire, or a composite wire; In a preferred embodiment of the present invention, the coil is wound with flat enameled copper wire. The flat wire has a higher fill factor and lower void ratio, which can increase the copper content in the stator slots, thereby reducing winding resistance and copper losses, and improving motor efficiency. The surface of the coil is provided with an insulating varnish layer. During resistance welding, the electrodes evaporate the insulating varnish layer under pressure, allowing the copper cores of adjacent coils to fully contact and weld.

[0071] like Figure 4 As shown, in an embodiment of the present invention, the first welding fixture includes: Multiple positioning blocks are arranged sequentially in a first direction on the welding plate, forming installation gaps between them. A welding sleeve is installed between every two adjacent positioning blocks to receive and position the lead wires from the ends of adjacent coils for subsequent welding operations. Wire storage blocks, corresponding to the positioning block sequence, are arranged in a second direction on the first welding plate, maintaining an arrangement corresponding to the spacing between the positioning blocks. Each wire storage block has a wire storage groove for accommodating and fixing the end lead wires extending from both ends of the coil, ensuring the lead wires are stably held in the welding position. The first and second directions are parallel to each other; this arrangement enables effective positioning and storage of the coil lead wires, thereby ensuring subsequent welding accuracy and efficiency.

[0072] The positioning block sequence can be arranged in a straight line or in an arc to accommodate the shape of different types of stator cores. When an arc arrangement is used, the spacing between adjacent positioning blocks corresponds one-to-one with the spacing of the stator core slots, thereby improving the assembly accuracy of the coil assembly. The positioning blocks can be made of high-temperature resistant insulating materials, such as polyimide or alumina ceramic, to ensure they are not ablated during resistance welding.

[0073] The welding sleeve can be a hollow metal tube, preferably made of copper or a copper alloy; its surface can be tin-plated or nickel-plated to improve conductivity and oxidation resistance during resistance welding. In another embodiment, the welding sleeve can be a double-port structure, that is, both ends are provided with insertion holes to simultaneously accommodate the leads of two coils, ensuring the stability of pre-positioning.

[0074] In a preferred embodiment, when the first welding plate is coupled to the welding machine, different specifications of welding plates can be quickly replaced through a detachable connection; the positioning block sequence can be modularly replaced according to different coil sizes; the wire storage block sequence can be arranged in different arrangements according to the wiring method, thereby improving the versatility of the device. The wiring method can be a star connection or a delta connection.

[0075] like Figure 5 As shown, in a preferred embodiment of the present invention, the coil assembly consists of three independent winding coils, each of which is formed by winding enameled wire; the ends of two adjacent coils are joined and fixed by welding sleeves, which serve to position, limit, and electrically connect; multiple coils are connected in sequence and arranged in a ring or arc shape to form a closed or partially closed coil assembly; both ends of the assembly are provided with lead wires for connecting to wiring components or motor drive circuits; the finished coil assembly has complete electrical connectivity and can be directly installed into the stator core as a winding unit; the lead wires can be reserved to a certain length and can be fixed by wire storage blocks.

[0076] like Figure 6-7 As shown in the embodiments of the present invention, the resistance welding mainly consists of an upper electrode, a lower electrode, a workpiece, and a power source. The workpiece is composed of two flat wires tightly bonded together or of a flat wire tightly bonded to a welding sleeve; the upper and lower electrodes are made of a highly conductive and highly wear-resistant copper alloy. When the upper and lower electrodes apply pressure to the workpiece, the workpiece is tightly clamped. Then the power supply outputs a large current through the transformer, and the current flows through the contact area of ​​the workpiece being welded. Joule heating is generated due to the resistance in the contact area; The temperature of the solder joint rises rapidly and exceeds the melting point of the metal, forming a weld nugget under the pressure of the electrodes; After cooling, the molten nugget solidifies into a single piece, completing the welding process.

[0077] The resistance welding can be performed using any of the following methods: AC resistance welding, DC resistance welding, medium frequency inverter resistance welding, or energy storage spot welding. By adjusting process parameters such as welding current, welding time, and welding pressure, a reliable conductive connection can be formed at the weld point.

[0078] In a preferred embodiment, the resistance welding pressure is set to 40 kFG and the welding current is set to greater than or equal to 4000 A.

[0079] like Figure 8-9 As shown, in an embodiment of the present invention, the stator core includes: The stator core consists of an annular yoke and multiple teeth extending axially from one end of the annular yoke. These teeth are arranged sequentially around the core, forming slots between each other to facilitate the placement and positioning of the coil assemblies. Together, these teeth form an annular coil placement platform, allowing multiple coil assemblies to be evenly distributed around the circumference of the stator core.

[0080] Multiple wiring assemblies are set on the coil placement platform, each corresponding to the end lead position of one or two adjacent coil assemblies. Specifically, during installation, the end leads of the coil assemblies are first pre-connected to the wiring assemblies. The leads of two adjacent coil assemblies are fixed to the conductive parts of the wiring assemblies by means of snap-fit, crimping, or spot welding, thereby achieving the predetermined electrical connection.

[0081] The connection between the wiring assembly and the stator core is made of insulating material to prevent current from being directly conducted into the stator core through the wiring assembly, thus improving insulation performance and safety. The connection between the wiring assembly and the end leads is made of conductive material, such as copper or tin-plated copper sheet, to ensure good conductivity and stable soldering quality.

[0082] During the coil assembly fixing process, a high-molecular polymer material is coated on the outer surface of the coil. After curing, this polymer enhances the bonding strength between the coil and the teeth, preventing vibration or displacement of the coil during operation. After the coil assembly and wiring assembly are welded together, the coil assembly is firmly installed inside the stator core through the dual action of "mechanical fixing + electric welding", thus forming a stable stator semi-finished structure.

[0083] Through this implementation method, the coil assembly can maintain a stable position within the stator core, and the end leads can achieve a reliable electrical connection through the wiring assembly, providing a fundamental guarantee for the subsequent overall assembly of the stator and the operation of the entire machine.

[0084] The terminal block placement platform allows for accurate positioning of the wiring components before welding, preventing misalignment during welding and improving welding consistency. Preferably, the terminal block placement platform can be an integrated ring structure or multiple separate support blocks distributed around the stator core, suitable for wiring components with different structures.

[0085] In one embodiment, the stator core body is made of stamped silicon steel sheets stacked together and fixed as a whole by welding or riveting. In another embodiment, the stator core body adopts a segmented assembly structure, with each segment combined by snap-fit ​​or positioning pins, which facilitates the processing and assembly of large motors.

[0086] In one embodiment of the invention, the polymer is epoxy resin, which is coated by vacuum pressure impregnation (VPI) to tightly bond the coil assembly to the stator core. In another embodiment, the polymer is silicone, which is flexible and heat-resistant, and maintains good insulation and cushioning properties at high temperatures.

[0087] like Figure 10 As shown, in an embodiment of the present invention, the second welding fixture includes: A second welding plate, which can be made of high-strength steel or heat-resistant alloy material to ensure good mechanical strength and heat resistance stability during the welding process.

[0088] A core positioning part is provided on the upper surface of the second welding plate. The core positioning part includes several limiting ribs and core positioning holes. The shape and size of the core positioning holes match the shape of the stator core, and are usually designed as circular or polygonal through holes to allow the stator core to be inserted axially and accurately positioned on the second welding plate. Through the core positioning holes, the stator core can form a reliable fit with the second welding plate when inserted, preventing displacement or shaking during the welding process.

[0089] During assembly, the stator core to be processed is first accurately placed on the core positioning part through the core positioning hole, and then the wiring assembly is installed in the designated position on the terminal block placement platform. Then, the two end leads of the coil assembly are placed on the conductive part of the wiring assembly.

[0090] Building upon this, the second welding plate is used in conjunction with an external welding machine. The welding head of the welding machine precisely presses against the conductive parts of the two end leads and the wiring assembly through a positioning fixture, and completes the fusion welding or brazing operation under set current and time conditions, thereby achieving a firm conductive connection between the two end leads and the wiring assembly. This conductive connection not only ensures electrical continuity, but also provides a strong weld with good mechanical strength and electrical conductivity.

[0091] like Figure 11 As shown, in one embodiment of the present invention, a motor stator processing equipment includes a production line comprising multiple processing stations arranged sequentially: a loading station, a first assembly station, a first welding station, a second assembly station, an insulation treatment station, a third assembly station, a second welding station, an inspection station, and an unloading station. Each processing station is connected by a conveyor belt, which is equipped with an adjustable clamping mechanism to stably fix the stator core or semi-finished product during transport, preventing displacement.

[0092] At the loading station, operators or automated loading robots place the stator core, prefabricated coils, welding sleeves, and wiring assemblies sequentially onto the corresponding support platforms on the conveyor belt. The support platforms are equipped with positioning pins and limiting grooves to ensure the positional accuracy of the core and components during transport.

[0093] At the first assembly position, a first assembly fixture is provided, including an annular positioning block and a wire storage block. The annular positioning block is used to accurately install the coil into place, and it has multiple radial slots, which correspond to the positioning blocks of the first welding fixture. During assembly, the end leads of two adjacent coils pass through welding sleeves and are sequentially placed into the wire storage slots of the wire storage block. The wire storage slots are provided with an insulating liner to prevent wear or short circuits on the conductor surface.

[0094] At the first welding position, a first welding machine is installed, which employs laser welding or resistance welding. The electrode head of the welding machine, in conjunction with the first welding fixture, welds the end leads of two adjacent coils within the welding sleeve, firmly connecting the two end leads to form a stable coil assembly. The welding process is controlled by an automatic control system that regulates the current and welding time to ensure the strength and electrical reliability of the weld joint.

[0095] In the second assembly position, the delivered coil assembly is automatically inserted into the teeth of the stator core. The tooth surface is pre-coated with adhesive to enhance the fit between the coil and the teeth. Simultaneously, the end leads of the coil assembly are positioned towards the outlet direction of the core cavity for subsequent connection. At the same time, the wiring assembly is placed on the terminal block placement platform and aligned with the end leads.

[0096] At the insulation treatment location, a polymer coating device is installed, using spraying or impregnation processes to apply an insulating polymer between the coil and the core teeth. After heat curing, this polymer strengthens the coil, improves mechanical stability, and enhances the insulation performance between the core and the coil, preventing breakdown.

[0097] In the third assembly position, the stator semi-finished product is conveyed to the core positioning section of the second welding fixture. The core positioning section precisely positions the core through positioning holes.

[0098] At the second welding position, a second welding machine is installed. Using a second welding plate in conjunction with the welding machine, the end leads of the coil assembly are welded to the conductive terminals of the wiring assembly, thereby establishing an electrical connection between the different coils and ultimately forming a complete stator assembly. After welding, the wiring assembly is insulated from the core body by its insulating support to prevent short circuits.

[0099] At the inspection station, the equipment is equipped with an electrical performance testing device and a machine vision appearance inspection device. Electrical testing includes inter-turn insulation testing, withstand voltage testing, and DC resistance testing; appearance inspection uses an industrial camera to identify solder joint integrity and insulation layer coverage, ensuring the product meets quality requirements.

[0100] At the unloading station, the processed and qualified stator assemblies are removed from the processing line by an automatic robot or pushing mechanism and transported to the finished product collection area.

[0101] Through the above processing technology, the stator core can be produced in an automated, high-precision and highly consistent manner from initial feeding to final product, which significantly improves production efficiency and reduces manual intervention.

[0102] In a preferred embodiment of the present invention, the processing body further includes: A loading platform and an automatic loading robot are installed at the loading position. The loading robot can sequentially grasp the stator core, coil, welding sleeve, and wiring assembly, and accurately place them onto the processing line. To ensure positioning accuracy, a vacuum adsorption device or positioning pins can be installed on the loading platform.

[0103] A first welding fixture is provided at the first assembly position. This fixture has multiple annular positioning blocks, each matching the geometry of the coil. The coil is installed into the corresponding positioning block by a pushing device. The end leads of two adjacent coils are guided by a robot arm through the welding sleeve and placed into the wire storage slots on the wire storage block. The opening shape of the wire storage slots includes, but is not limited to, a "U" shape, to facilitate rapid placement and subsequent retrieval.

[0104] A first welding machine, preferably a laser welding machine or a resistance welding machine, is installed at the first welding station. This welding machine works in conjunction with a first welding fixture, and an automatic alignment device controls the position of the welding point to firmly weld the end leads of two adjacent coils to the welding sleeve. After welding is completed, the fixture can cool the weld point and transport it to the next station via a rotation or lifting release mechanism.

[0105] At the second assembly position, a core fixing platform is provided. This platform has positioning slots corresponding to the core teeth, facilitating accurate installation of the coil assembly onto the core teeth. After installation, the coil end leads are fixed and positioned by a clamping mechanism or tensioning device to prevent displacement during subsequent processing.

[0106] The insulation treatment area is equipped with a spraying device or a dip coating device. The spraying device uses nozzles to uniformly apply polymer (including but not limited to epoxy resin or polyimide solution) between the coil and the iron core teeth. The amount of coating can be adjusted by a flow control valve. After treatment, the coating layer is cured by a heating curing unit, so that the stator semi-finished product obtains good mechanical reinforcement and insulation performance.

[0107] At the third assembly position, a second welding fixture is provided. This fixture includes a core positioning part that matches the shape of the stator semi-finished core for precise positioning. Simultaneously, wiring assemblies are placed on the terminal block placement table. A robotic arm or manual assistance accurately places the wiring assemblies to ensure the stability of subsequent welding.

[0108] A second welding machine, preferably an automatic multi-point welding machine, is installed at the second welding position. This machine, in conjunction with the second welding fixture, welds the end leads of the coil assembly to the wiring assembly. The welding machine is equipped with an automatic identification system that detects the relative position of the leads and the wiring assembly and makes fine adjustments to ensure the consistency and strength of the weld points.

[0109] An electrical performance testing device and a visual inspection device are installed at the testing station. The electrical testing device includes a withstand voltage test module, an insulation resistance test module, and a continuity test module, used to check whether the electrical performance of the stator assembly meets the design requirements. The visual inspection device can be a machine vision system, used to check the quality of solder joints, the integrity of coatings, and whether the assembly is misaligned.

[0110] At the unloading station, there is an unloading platform and a robotic arm. The robotic arm removes the finished stator assembly from the processing line and places it into a finished product pallet. The finished product pallet can be equipped with a QR code or RFID tag for batch tracking.

[0111] The conveying components are chain conveyor belts or roller conveyor belts, running through all the aforementioned processing stations. The conveyor belts are driven by motors, enabling precise positioning and step-by-step conveying, ensuring the cycle time of each processing station and the seamless connection of processing steps.

[0112] like Figure 12 As shown, in one embodiment of the present invention, a stator assembly includes: The stator core is formed by stacking and fixing several core laminations in sequence. Its inner circumference is provided with a coil placement platform, and its outer circumference is provided with a terminal block placement platform. Multiple coils are respectively embedded in the coil placement platform and evenly distributed along the circumference of the stator core; The wiring assembly has an insulated first end placed on the terminal block platform, and a second end leading out of the end lead of the coil. The coils are electrically connected to each other and to the wiring assembly by welding. A polymer coating is applied between the stator core and the coil to fix the coil in the stator core.

[0113] In a preferred embodiment, the stator core is formed by stacking multiple silicon steel sheets into a circular ring structure; multiple teeth are distributed circumferentially for embedding the winding coils. The windings adopt a concentrated winding method, with each coil unit mounted on one of the teeth. After the coils are connected, a three-phase winding is formed, namely the U-phase, V-phase, and W-phase. The windings are reliably connected at the ends by resistance welding and welding sleeves. After the internal connection of each phase winding is completed, a separate phase lead-out terminal is formed. The lead-out terminal can be connected to a wiring assembly, terminal block, or inverter drive circuit.

[0114] In one preferred embodiment, the three-phase windings are connected in a star configuration, meaning the three phases converge at a single point to form a neutral point. This configuration is suitable for motors requiring stability and high starting torque. In another preferred embodiment, the three-phase windings are connected in a delta configuration, which improves the motor's output power and is suitable for high-power motor applications.

[0115] In a preferred embodiment, the stator can be a three-phase stator, with each phase consisting of two phase wires wound in parallel, and a single winding assembly consisting of multiple coils connected in series. Furthermore, the stator can also be a multi-phase structure, such as a five-phase or six-phase stator, with each phase consisting of multiple phase wires connected in parallel to form a distributed winding, thereby achieving low harmonic output and high reliability.

[0116] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for machining an electric motor stator, characterized in that, An application is made in a motor stator processing equipment, the motor stator processing equipment including a first welding fixture, the first welding fixture having a first welding plate, the first welding plate having a plurality of coil positioning blocks and a plurality of wire storage blocks, the plurality of coil positioning blocks being arranged along a first direction, the plurality of wire storage blocks being arranged along a first direction, the wire storage blocks having wire storage grooves, the plurality of coil positioning blocks and the plurality of wire storage blocks being spaced apart along a second direction, the first direction and the second direction being parallel, the motor stator processing method including: Preparation steps: Prepare stator core, multiple coils, welding sleeves, and wiring assemblies; Initial assembly steps: Select the target number of coils and place them on multiple coil positioning blocks of the first welding fixture in a preset order to form a coil assembly, wherein a welding sleeve is provided between every two adjacent coils; pass the end leads of two adjacent coils through the welding sleeve and lock them into the wire storage slot of the corresponding wire storage block; place the first welding fixture into the first welding machine, and control the first welding machine to weld the welding sleeve positions based on the set welding parameters, so that the end leads of two adjacent coils are connected to each other; cut the section of the end lead of the coil between the welding sleeve and the wire storage block, and retain the welding sleeve; the multiple coils after cutting are connected to each other through the welding sleeve to form a coil assembly. Repeat the initial assembly steps to obtain the target number of coil assemblies; Assembly steps: Place the target number of coil assemblies into the stator core, and fix the target number of coil assemblies onto the stator core by applying a polymer coating. Pre-connect the end leads of two adjacent coil assemblies to the wiring assembly to form a stator semi-finished product. Fix the stator semi-finished product onto the second welding fixture, place the second welding fixture on the second welding machine, and weld the end leads of two adjacent coil assemblies to the wiring assembly using the second welding machine.

2. The motor stator processing method as described in claim 1, characterized in that, The stator core has an annular yoke, multiple teeth at one axial end of the annular yoke, and multiple wiring assemblies spaced apart on the annular yoke. The process of placing a target number of coil assemblies into the stator core, fixing the target number of coil assemblies to the stator core by coating with a polymer, and pre-connecting the end leads of adjacent coil assemblies to the wiring assemblies to form a stator semi-finished product includes: Multiple coil assemblies are sequentially fitted onto multiple teeth of the stator core until all teeth are equipped with the coils. Pre-connect the end leads of two adjacent coil assemblies to the wiring assembly; A high-molecular polymer is applied between the coil and the teeth to solidify the coil assembly into the stator core, thus forming a stator semi-finished product.

3. The motor stator processing method as described in claim 1, characterized in that, The second welding fixture includes a second welding plate and a core positioning part disposed on the second welding plate, wherein the core positioning part is provided with a core positioning hole; The step of fixing the stator semi-finished product onto the second welding fixture, placing the second welding fixture onto the second welding machine, and welding the end leads of two adjacent coil assemblies to the wiring assembly using the second welding machine includes: Align the stator semi-finished product with the core positioning hole and position it on the core positioning part; The second welding fixture, along with the stator semi-finished product and wiring assembly located on it, are placed onto the second welding machine, and the end leads of two adjacent coil assemblies are welded to the wiring assembly using the second welding machine.

4. A motor stator processing equipment, characterized in that it is used to perform the motor stator processing method as described in any one of claims 1 to 3, comprising a processing body, a first welding fixture, a second welding fixture, a first welding machine, and a second welding machine; The processing body has multiple processing positions, and the processing body is used to control the first welding fixture and the second welding fixture to be transferred between the processing positions. The processing body is used to place the first welding fixture in the first assembly position, insert the end leads of two adjacent coils into the welding sleeve, and also to place the first welding fixture on the first welding machine. The first welding machine is used to weld the end leads and welding sleeves of each pair of adjacent coils to connect the two adjacent coils and form a coil assembly. The processing body is also used to place a target number of coil assemblies into the stator core, and fix the target number of coil assemblies onto the stator core by coating with a polymer, and pre-connect the end leads of two adjacent coil assemblies to the wiring assembly to form a stator semi-finished product, and fix the stator semi-finished product onto a second welding fixture, place the second welding fixture on a second welding machine, and weld the end leads of two adjacent coil assemblies to the wiring assembly by the second welding machine.

5. The motor stator processing equipment as described in claim 4, characterized in that, The first welding fixture includes: A first welding plate, a sequence of positioning blocks disposed in a first direction of the first welding plate, and a sequence of wire storage blocks disposed in a second direction of the first welding plate; A welding sleeve is provided between adjacent positioning blocks in the positioning block sequence; The interval between the storage block sequence and the positioning block sequence is set. The wire storage block is provided with a wire storage groove, which is used to fix the end leads extending from both ends of the coil. The first direction is parallel to the second direction.

6. The motor stator processing equipment as described in claim 4, characterized in that, The stator core includes an annular yoke and a plurality of teeth located at one axial end of the annular yoke. The multiple teeth constitute a coil placement platform; The coil placement platform is provided with multiple wiring assemblies, and the wiring assemblies are also pre-connected to the end leads of the coil assemblies for welding two coil assemblies together. The connection part between the wiring assembly and the main body is made of insulating material, and the connection part between the wiring assembly and the end lead wire is made of conductive material; The coil assembly is fixed inside the body cavity by applying a polymer coating to the coil and welding it to the wiring assembly, forming a stator semi-finished product.

7. The motor stator processing equipment as described in any one of claims 4 to 6, characterized in that, The second welding fixture includes: The second welding plate, and the core positioning part provided on the second welding plate; The core positioning part is provided with a core positioning hole for aligning and placing the stator core into the second welding plate. The second welding plate, in conjunction with a welding machine, welds the two end leads to the wiring assembly, forming a conductive connection between the two end leads to create a stator assembly.

8. The motor stator processing equipment as described in any one of claims 4 to 7, characterized in that, The plurality of processing stations include: The loading station is used to place the stator core, coil, welding sleeve and wiring assembly in sequence in the processing line; The first assembly position is used to install the coil into the positioning block located on the first welding fixture, and to pass the end lead wire between two adjacent coils through the welding sleeve and into the wire storage groove on the wire storage block. The first welding position is equipped with a first welding machine, which controls the first welding fixture and the welding machine to weld the end leads of two adjacent coils onto the welding sleeve to form a coil assembly; The second assembly position is used to install the coil assembly onto the iron core tooth section and position the end lead wire, and to install the wiring assembly on the terminal block placement platform. The insulation treatment area is used to apply a polymer between the coil and the iron core teeth to form a stator semi-finished product, so as to strengthen the coil and improve the insulation performance. The third assembly position is used to place the stator semi-finished product into the core positioning part inside the second welding fixture; The second welding position is equipped with a second welding machine, which is used to weld the end lead wire of the coil assembly to the wiring assembly in cooperation with the second welding fixture to form the stator assembly. The inspection station is used to inspect the electrical performance and appearance of the stator core after welding and insulation. The unloading position is used to remove the completed stator assembly from the processing line; The conveying component passes through each processing station in sequence, and is used to transport the stator assembly or its components to the corresponding processing station in sequence and to the next processing station after the process is completed.

9. A stator assembly, characterized in that, The stator assembly is a stator assembly manufactured using the motor stator processing method as described in any one of claims 1 to 3, and the stator assembly comprises: The stator core is formed by stacking and fixing several core laminations in sequence. Its inner circumference is provided with a coil placement platform, and its outer circumference is provided with a terminal block placement platform. Multiple coils are respectively embedded in the coil placement platform and evenly distributed along the circumference of the stator core; The wiring assembly has an insulated first end placed on the terminal block platform, and a second end leading out of the end lead of the coil. The coils are electrically connected to each other and to the wiring assembly by welding. A polymer coating is applied between the stator core and the coil to fix the coil in the stator core.

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