Stator laser welder

Abstract

The utility model discloses a kind of stator laser welding machines, belong to motor manufacturing equipment technical field.The device includes rack and is installed on rotating workbench of rack, the rotating workbench is equipped with the fixed mechanism of stator clamping detection outside, the rotating workbench periphery is equipped with the symmetrical distribution of laser welding mechanism, the rotating workbench below is equipped with lifting assembly, one side of the rack is equipped with control panel, the control panel is connected with rotating workbench, fixed mechanism, laser welding mechanism and lifting assembly all through orientation electricity, through rack stable bearing, rotating workbench, fixed mechanism, laser welding mechanism, lifting assembly and control panel are integrated cooperation, with control panel as hub unified scheduling, through each component linkage, solve traditional equipment defects, realize the automation of multiple model stator, high-precision, high-efficiency welding, simultaneously prolong equipment life, reduce operation threshold and energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing equipment technology, and in particular to a stator laser welding machine. Background Technology

[0002] In fields such as new energy vehicles, industrial motors, and home appliances, the stator, as the core component of a motor, directly determines the motor's operating efficiency, power density, and service life through the connection quality between its windings and the iron core. As motors become smaller and more powerful, traditional welding processes such as resistance welding and arc welding, due to their large heat input, significant welding deformation, and low weld precision, are no longer sufficient to meet the high-precision welding requirements of stators. Laser welding technology, with its advantages of high energy density, small heat-affected zone, fast welding speed, and stable weld quality, has gradually become the mainstream process for stator welding, and stator laser welding machines have consequently become key equipment in the motor manufacturing process.

[0003] Existing stator laser welding machines generally suffer from fragmented operation processes, requiring manual adjustment of the worktable position, manual initiation of welding, and visual observation of the welding status. This not only demands high operator skills but also easily leads to poor welding stability due to variations in manual operation. Furthermore, in terms of stator positioning and clamping, traditional equipment's centering structure struggles to ensure precise alignment between the stator center and the worktable center. Clamping components often experience stator deformation or insecure clamping due to uneven force distribution or lack of effective detection, directly affecting welding point accuracy. Moreover, in terms of equipment compatibility, traditional welding machines have a fixed worktable height, requiring the replacement of specialized tools for stators of different heights and specifications. The traditional welding platform is cumbersome and time-consuming to change over, limiting its applicability. In terms of welding efficiency and quality control, it often uses a single welding gun design, requiring frequent adjustments to the stator position to complete multi-point welding, resulting in low efficiency. Furthermore, it lacks real-time monitoring and feedback of the welding area temperature, making it impossible to adjust laser parameters in a timely manner. This can easily lead to quality defects such as incomplete welds or missed welds due to abnormal temperature or fluctuations in laser power. In addition, traditional cooling methods are mostly fixed-flow cooling, which either causes high-temperature damage and shortens the lifespan of laser-welded components due to untimely cooling, or wastes energy due to excessive flow. It is difficult to balance cooling effect and energy consumption control, resulting in poor overall equipment operation stability and economy. Utility Model Content

[0004] The stator laser welding machine provided by this utility model can solve the problem of dispersed operation in the existing stator laser welding machine.

[0005] A stator laser welding machine includes a frame and a rotary worktable mounted on the frame. A fixing mechanism for clamping and detecting the stator is provided outside the rotary worktable. A laser welding mechanism is symmetrically distributed around the outer periphery of the rotary worktable. A lifting assembly is provided below the rotary worktable. A control panel is provided on one side of the frame. The control panel is electrically connected to the rotary worktable, the fixing mechanism, the laser welding mechanism, and the lifting assembly via guides.

[0006] Preferably, the frame is provided with a partition and divided into upper and lower layers, and the partition is provided with through holes; the rotary worktable includes a worktable and a servo motor. The workbench is cylindrical in shape and is located in the through hole of the partition plate, and can move up and down. The diameter of the workbench is equal to that of the through hole of the partition plate. The servo motor is located in the lower frame and directly below the worktable. The output end of the servo motor is fixedly connected to the bottom of the worktable via a coupling.

[0007] Preferably, the fixing mechanism includes a clamping assembly, a centering assembly, and a photoelectric sensor; The clamping assembly is located in the upper frame, and there are several clamping assemblies, all of which are symmetrically distributed at the same angle along the outer periphery of the worktable. The centering component is located in the upper frame and directly above the worktable; The photoelectric sensors are fixedly installed in the upper frame and symmetrically distributed on the outer periphery of the worktable. The photoelectric sensors and the clamping components do not interfere with each other.

[0008] Preferably, the clamping assembly includes an arc-shaped clamping plate, a clamping cylinder, a fixing seat, and a pressure sensor; The concave surface of the arc-shaped clamping plate faces the worktable, and the center of its convex surface is fixedly connected to the output end of the clamping cylinder. The clamping cylinder is placed horizontally on the upper surface of the fixed base and fixed with bolts; The pressure sensor is fixedly installed at the end of the output end of the clamping cylinder and extends out of the concave surface of the arc-shaped clamping plate. A buffer pad is provided on the outside of the pressure sensor.

[0009] Preferably, the centering assembly includes a centering cylinder and a centering pin; The centering cylinder is vertically positioned directly above the workbench, and its bottom is fixed to the top of the upper frame by bolts. The centering pin is generally conical, and its bottom is bolted to the output end of the centering cylinder. The centering cylinder and centering ejector pin are both coaxial with the worktable.

[0010] Preferably, the photoelectric sensors are fixedly mounted on the upper frame and symmetrically distributed on both sides of the worktable.

[0011] Preferably, the laser welding mechanism includes an adaptive carrier, a laser generator, and a temperature sensor; The adaptive carrier includes a three-axis module, which is fixedly mounted on the upper surface of the frame partition by bolts and is symmetrically distributed along the outer periphery of the worktable; The laser generator is fixedly mounted on the upper surface of the Z-axis module by bolts; The temperature sensor is fixedly mounted on the side of the Z-axis module by bolts, and its sensor lens is aligned with the worktable. The laser welding mechanism is symmetrically distributed along the outer periphery of the worktable and does not interfere with the clamping components and photoelectric sensors.

[0012] Preferably, the lifting assembly includes a bracket, a lifting motor, a guide rail, and a slider; The bracket is arranged vertically along the frame, and its ends are fixedly installed on the bottom surface of the frame partition. The lifting motor is fixedly installed at the other end of the bracket away from the frame partition, with its output end facing the frame partition. The guide rail is fixedly installed on the bracket along the vertical direction of the frame and is on the same side as the lifting motor; The slider is slidably mounted in the guide rail, and its end is connected to the output end of the lifting motor. The bottom of the worktable is fixedly mounted on the slider.

[0013] Preferably, the frame is also provided with a cooling mechanism, which is located on the outer side of the frame and connected to the laser welding mechanism.

[0014] Preferably, the cooling mechanism includes a cooling water tank, cooling water pipes, a temperature control solenoid valve, and a water temperature sensor; The cooling water tank is fixedly installed on the other side of the frame opposite to the control panel. One end of the cooling water pipe is connected to the outlet of the cooling water tank, and passes through a series of laser welding mechanisms to connect to the return outlet of the cooling water tank. The temperature control solenoid valve is fixedly installed at the outlet of the cooling water tank by bolts. The water temperature sensor is located in the cooling water tank and is electrically connected to the control panel.

[0015] The beneficial effects of this utility model are as follows: By providing a stable support foundation through the frame, this utility model integrates the rotary worktable, fixing mechanism, laser welding mechanism, lifting assembly, cooling mechanism, and control panel into a cohesive whole. The control panel, as the central hub, establishes a guiding electrical connection with each mechanism, uniformly sending commands and receiving feedback, replacing traditional scattered manual operation. The cooling mechanism provides precisely temperature-controlled circulating cooling for the laser welding mechanism, preventing damage due to high temperatures. After the stator is placed, the centering and clamping assemblies of the fixing mechanism work together, combined with the symmetrical detection of photoelectric sensors, to achieve axial centering and radial stable clamping of the stator, solving the problems of inaccurate positioning and unstable clamping in traditional methods. Simultaneously, the motor-driven slider of the lifting assembly smoothly raises and lowers the worktable along the guide rail, eliminating the need for replacement. The machine can adapt to stators of different heights. During welding, the three-axis module of the laser welding mechanism adjusts the generator position, and the symmetrically distributed generators work synchronously. Together with the servo motor of the rotating worktable, they drive the stator to rotate, achieving continuous and efficient welding of multiple weld points. Temperature sensors monitor and provide feedback on the temperature in real time, and the control panel adjusts the laser parameters to ensure quality. Finally, through the linkage mode of unified scheduling by the control center, stable support structure, precise action of the actuator, real-time feedback from the detection mechanism, and cooling mechanism to ensure operation, all components solve the defects of traditional stator laser welding machines, such as cumbersome operation, poor compatibility, low welding efficiency, and unstable quality. It realizes automated, high-precision, and high-efficiency welding of multiple stator models, while extending the service life of the equipment and reducing the operating threshold and energy consumption. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the stator laser welding machine; Figure 2 This is a side view of the stator laser welding machine; Figure 3 for Figure 2 A sectional view along the cutting line AA; Figure 4 for Figure 2 A sectional view along the cutting line BB.

[0017] Explanation of reference numerals in the attached figures: 1. Frame; 2. Rotary worktable; 21. Worktable; 22. Servo motor; 3. Fixing mechanism; 31. Clamping assembly; 311. Arc-shaped clamping plate; 312. Clamping cylinder; 313. Fixing base; 314. Pressure sensor; 32. Centering assembly; 321. Centering cylinder; 322. Centering pin; 33. Photoelectric sensor; 4. Laser welding mechanism; 41. Adaptive carrier; 42. Laser generator; 43. Temperature sensor; 5. Lifting assembly; 51. Bracket; 52. Lifting motor; 53. Guide rail; 54. Slider; 6. Control panel; 7. Cooling mechanism; 71. Cooling water tank; 72. Cooling water pipe; 73. Temperature control solenoid valve; 74. Water temperature sensor. Detailed Implementation

[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0019] like Figures 1 to 4 As shown in the figure, a stator laser welding machine provided by this utility model includes a frame 1 and a rotary worktable 2 mounted on the frame 1. The rotary worktable 2 is provided with a fixing mechanism 3 for clamping and detecting the stator. The rotary worktable 2 is provided with symmetrically distributed laser welding mechanisms 4 on its outer periphery. The rotary worktable 2 is provided with a lifting assembly 5 below it. The frame 1 is provided with a control panel 6 on one side. The control panel 6 is electrically connected to the rotary worktable 2, the fixing mechanism 3, the laser welding mechanisms 4 and the lifting assembly 5 through a guide.

[0020] The frame 1 serves as the basic support structure of the equipment, supporting all functional components and ensuring the relative stability of each component's installation position, providing a rigid foundation for the overall operation of the equipment. The rotating worktable 2 is used to place the stator and rotate it, enabling the laser welding mechanism 4 to continuously process multiple welding points on the stator's outer periphery. The fixing mechanism 3 is designed to stably clamp the stator during welding and simultaneously detect the stator's installation status to prevent positional displacement due to rotation or welding impact. The laser welding mechanism 4 adopts a symmetrical distribution, allowing simultaneous welding of symmetrical points on the stator, reducing waiting time during the welding process. The lifting assembly 5 adjusts the height of the rotating worktable 2 to accommodate stators of different heights, meeting the welding needs of various stator models without requiring worktable replacement. The control panel 6 is electrically connected to the guides of each mechanism, enabling centralized transmission of control commands and centralized feedback of mechanism status, replacing the scattered manual operation links in traditional equipment, reducing instability caused by differences in manual operation, making the operation process more standardized, and the actions of each mechanism more coordinated.

[0021] The frame 1 is provided with a partition and is divided into upper and lower layers, and the partition is provided with through holes. The rotary worktable 2 includes a worktable 21 and a servo motor 22. The workbench 21 is cylindrical in shape and is disposed in the through hole of the partition plate and can move up and down. The diameter of the workbench 21 is equal to that of the through hole of the partition plate. The servo motor 22 is located in the lower frame 1 and directly below the worktable 21. The output end of the servo motor 22 is fixedly connected to the bottom of the worktable 21 via a coupling.

[0022] The frame 1 adopts an upper and lower partition design with through-hole partitions to separate the execution components of the equipment, avoid mutual interference, and make the overall structure more compact. The worktable 21 is designed as a cylinder with a diameter that matches the through holes of the partitions. It can guide the vertical movement through the through holes and ensure coaxiality during rotation. The servo motor 22 is connected to the worktable 21 through a coupling, which can stably transmit rotational power, making the rotation of the worktable 21 smoother and facilitating the control of rotation angle and speed, thus providing a foundation for precise welding.

[0023] The fixing mechanism 3 includes a clamping component 31, a centering component 32, and a photoelectric sensor 33; The clamping assembly 31 is disposed in the upper frame 1. There are several clamping assemblies 31, and they are all symmetrically distributed along the outer periphery of the worktable 21 at the same angle. The centering component 32 is located in the upper frame 1 and directly above the workbench 21; The photoelectric sensor 33 is fixedly installed in the upper frame 1 and symmetrically distributed on the outer periphery of the worktable 21. The photoelectric sensor 33 and the clamping assembly 31 do not interfere with each other.

[0024] The fixing mechanism 3 integrates the clamping assembly 31, the centering assembly 32, and the photoelectric sensor 33 to ensure the installation accuracy of the stator from multiple dimensions. The symmetrical distribution design of the clamping assembly 31 can apply uniform clamping force from multiple directions around the stator, preventing radial displacement of the stator during rotation. The centering assembly 32 is located directly above the worktable 21 and can axially position the stator, ensuring that the center of the stator is aligned with the center of the worktable 21. The symmetrical arrangement of the photoelectric sensor 33 can detect the position status of the stator from different directions, providing the control system with information such as whether the stator is in place or has deviated, ensuring that the clamping and centering effects meet the welding requirements.

[0025] The clamping assembly 31 includes an arc-shaped clamping plate 311, a clamping cylinder 312, a fixing base 313, and a pressure sensor 314; The concave surface of the arc-shaped clamping plate 311 faces the worktable 21, and the center of its convex surface is fixedly connected to the output end of the clamping cylinder 312. The clamping cylinder 312 is placed horizontally on the upper surface of the fixed base 313 and fixed with bolts; The pressure sensor 314 is fixedly installed at the end of the output end of the clamping cylinder 312 and extends out of the concave surface of the arc-shaped clamping plate 311. A buffer pad is provided on the outside of the pressure sensor 314.

[0026] The clamping assembly 31 uses an arc-shaped clamping plate 311, whose concave surface can better fit the outer circumference of the stator, increasing the contact area, making the clamping more stable, and reducing local stress on the stator surface. The clamping cylinder 312 serves as a power source, which can quickly drive the arc-shaped clamping plate 311 to complete the clamping and releasing actions, facilitating the loading and unloading of the stator. The fixing seat 313 is used to fix the clamping cylinder 312, ensuring its stable installation position and preventing the clamping accuracy from being affected by cylinder shaking. The pressure sensor 314 can detect the magnitude of the clamping force. When used in conjunction with the buffer pad, it can prevent the stator from deforming due to excessive clamping force, and ensure that the clamping force is sufficient to prevent the stator from shifting, thus ensuring the stability of the welding process.

[0027] The centering assembly 32 includes a centering cylinder 321 and a centering pin 322; The centering cylinder 321 is vertically positioned directly above the workbench 21, and its bottom is fixedly installed on the top of the upper frame 1 by bolts. The centering pin 322 is generally conical, and its bottom is bolted to the output end of the centering cylinder 321. The centering cylinder 321 and the centering pin 322 are both coaxial with the worktable 21.

[0028] The centering assembly 32 uses a centering cylinder 321 to drive a conical centering ejector pin 322, and all three are kept on the same axis to achieve precise axial centering of the stator. The centering cylinder 321 can drive the centering ejector pin 322 to move up and down. When the ejector pin is inserted into the center hole of the stator, the conical structure can automatically adjust the position of the stator through contact, so that the center of the stator is aligned with the center of the worktable 21, ensuring that the welding accuracy of each point of the stator is consistent during the rotational welding process.

[0029] The photoelectric sensor 33 is fixedly installed on the upper frame 1 and symmetrically distributed on both sides of the worktable 21.

[0030] Photoelectric sensors 33 are symmetrically distributed on both sides of the worktable 21, which can detect the position status of the stator from different directions. This allows for a more comprehensive judgment on whether the stator is correctly placed and whether it has shifted during the welding process. This arrangement reduces the limitations of single-direction detection, provides more reliable feedback information to the control system, facilitates timely adjustment of the actions of relevant mechanisms, and ensures the smooth progress of the welding process.

[0031] The laser welding mechanism 4 includes an adaptive carrier 41, a laser generator 42, and a temperature sensor 43; The adaptive carrier 41 includes a three-axis module, which is fixedly installed on the upper surface of the partition of the frame 1 by bolts and is symmetrically distributed along the outer periphery of the worktable 21. The laser generator 42 is fixedly mounted on the upper surface of the Z-axis module by bolts; The temperature sensor 43 is fixedly mounted on the side of the Z-axis module by bolts, and its sensor lens is aligned with the worktable 21. The laser welding mechanism 4 is symmetrically distributed along the outer periphery of the worktable 21 and does not interfere with the clamping assembly 31 and the photoelectric sensor 33.

[0032] The adaptive carrier 41 of the laser welding mechanism 4 adopts a three-axis module, which can realize the position adjustment of the laser generator 42 in the X, Y, and Z directions, making it easy to accurately position the laser spot according to the welding requirements of different stators. The symmetrical distribution design of the laser generator 42 can simultaneously weld the welding points at symmetrical positions on the stator, improving welding efficiency and avoiding interference with other components. The temperature sensor 43 is aligned with the worktable 21, which can monitor the temperature change of the welding area in real time, providing a basis for the control system to adjust the laser parameters, ensuring that the temperature is within a suitable range during the welding process, and guaranteeing the welding quality.

[0033] The lifting assembly 5 includes a bracket 51, a lifting motor 52, a guide rail 53, and a slider 54; The bracket 51 is arranged vertically along the frame 1, and its end is fixedly installed on the bottom surface of the partition of the frame 1; The lifting motor 52 is fixedly installed on the other end of the bracket 51 away from the partition of the frame 1, and its output end faces the partition of the frame 1. The guide rail 53 is fixedly installed on the bracket 51 along the vertical direction of the frame 1, and is on the same side as the lifting motor 52; The slider 54 is slidably disposed in the guide rail 53, and its end is connected to the output end of the lifting motor 52. The bottom of the worktable 21 is fixedly installed on the slider 54.

[0034] The support 51 of the lifting assembly 5 provides the installation foundation for the entire assembly, ensuring the relative position stability of the lifting motor 52 and the guide rail 53. The lifting motor 52 drives the slider 54 to move along the guide rail 53, thereby driving the worktable 21 to move up and down. The guide rail 53 ensures that the movement trajectory of the slider 54 is straight, making the lifting action of the worktable 21 smooth and without shaking, thus adapting to the welding requirements of stators of different heights and expanding the applicability of the equipment.

[0035] The frame 1 is also provided with a cooling mechanism 7, which is located on the outer side of the frame 1 and connected to the laser welding mechanism 4.

[0036] The laser welding mechanism 4 generates heat during operation. Prolonged high-temperature operation may affect its performance and service life. The cooling mechanism 7 is connected to the laser welding mechanism 4 and can remove heat through circulation cooling, keeping the laser welding mechanism 4 at a suitable working temperature and ensuring its working stability and service life.

[0037] The cooling mechanism 7 includes a cooling water tank 71, a cooling water pipe 72, a temperature control solenoid valve 73, and a water temperature sensor 74; The cooling water tank 71 is fixedly installed on the other side of the frame 1 opposite to the control panel 6. One end of the cooling water pipe 72 is connected to the outlet of the cooling water tank 71, and passes through the laser welding mechanism 4 to connect to the return port of the cooling water tank 71. The temperature control solenoid valve 73 is fixedly installed at the outlet of the cooling water tank 71 by bolts; The water temperature sensor 74 is located in the cooling water tank 71 and is electrically connected to the control panel 6.

[0038] In the cooling mechanism 7, the cooling water tank 71 is used to store coolant, and the cooling water pipe 72 forms a circulation path, allowing the coolant to flow through the laser welding mechanism 4 for heat exchange; the water temperature sensor 74 detects the coolant temperature and feeds it back to the control panel 6. The control panel 6 adjusts the coolant flow rate by controlling the opening and closing degree of the temperature control solenoid valve 73, so that the coolant temperature is maintained within a suitable range, which can ensure the cooling effect and avoid unnecessary energy consumption, thus achieving reasonable control of the cooling process.

[0039] In summary, the stator laser welding machine provided in this embodiment of the present invention, when in use, after the equipment is started, the cooling mechanism 7 operates first, the coolant in the cooling water tank 71 circulates through the cooling water pipe 72, the water temperature sensor 74 monitors the coolant temperature in real time and transmits it to the control panel 6, the temperature control solenoid valve 73 automatically adjusts the flow rate according to the temperature to ensure that the laser welding mechanism 4 is at a suitable working temperature, the operator places the stator to be welded on the worktable 21 of the rotating worktable 2, and then the centering component 32 of the fixing mechanism 3 starts to work, fixing the stator... When the central cylinder 321 actuates, it drives the conical centering pin 322 to move downward and insert into the center hole of the stator. Since the centering pin 322 is coaxial with the worktable 21, it can automatically adjust the position of the stator, aligning the center of the stator with the center of the worktable 21, thus completing axial centering. At the same time, the clamping cylinder 312 of the clamping assembly 31 drives the arc-shaped clamping plate 311 to move towards the outer periphery of the stator. The concave surface of the arc-shaped clamping plate 311 fits against the outer periphery of the stator. The pressure sensor 314 detects the clamping force. When the appropriate force is reached, the clamping cylinder 312 stops, completing radial clamping. The photoelectric sensors 33, symmetrically distributed on both sides of the worktable 21, also detect the stator position. If there is any deviation, they are fed back to the control panel 6 for adjustment. If the height of the stator to be welded is inconsistent with the default height of the equipment, the control panel 6 will control the lifting motor 52 of the lifting assembly 5 to operate, driving the slider 54 to move along the guide rail 53, thereby adjusting the height of the worktable 21 to match the stator height. Then, the laser welding mechanism 4 starts working. The three-axis module of the adaptive carrier 41 adjusts the position of the laser generator 42 so that the laser spot is accurately aligned with the stator welding point. The laser generator 42 is started. At the same time, the servo motor 22 of the rotating worktable 2 drives the worktable 21 to rotate through the coupling. In this way, the laser welding mechanism 4 can continuously process multiple welding points on the outer periphery of the stator. Moreover, because the laser welding mechanism 4 is symmetrically distributed, it can weld welding points at symmetrical positions on the stator at the same time, improving welding efficiency. During the welding process, the temperature sensor 43 monitors the temperature of the welding area in real time and feeds the data back to the control panel 6 so as to adjust the laser parameters in time and ensure the welding quality. After welding is completed, the clamping cylinder 312 of the clamping assembly 31 drives the arc-shaped clamping plate 311 to release the stator, and the centering cylinder 321 of the centering assembly 32 drives the centering pin 322 to move upward. The operator removes the welded stator from the worktable 21. Finally, the rotating worktable 2, laser welding mechanism 4, fixing mechanism 3, lifting assembly 5 and other components return to their initial positions under the control of the control panel 6. The cooling mechanism 7 can continue to work for a period of time according to the actual situation to ensure that all components of the equipment are fully cooled, or stop working to prepare for the next welding.

[0040] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A stator laser welding machine, characterized in that: The machine includes a frame (1) and a rotary worktable (2) mounted on the frame (1). The rotary worktable (2) is provided with a fixing mechanism (3) for clamping and detecting the stator. The rotary worktable (2) is provided with symmetrically distributed laser welding mechanisms (4) on its outer periphery. The rotary worktable (2) is provided with a lifting assembly (5) below it. The frame (1) is provided with a control panel (6). The control panel (6) is electrically connected to the rotary worktable (2), the fixing mechanism (3), the laser welding mechanism (4), and the lifting assembly (5) through a guide.

2. The stator laser welding machine as described in claim 1, characterized in that: The frame (1) is provided with a partition and divided into upper and lower layers, and the partition is provided with through holes. The rotary worktable (2) includes a worktable (21) and a servo motor (22). The workbench (21) is cylindrical in shape and is located in the through hole of the partition plate and can move up and down. The diameter of the workbench (21) is equal to that of the through hole of the partition plate. The servo motor (22) is located in the lower frame (1) and directly below the worktable (21). The output end of the servo motor (22) is fixedly connected to the bottom of the worktable (21) through a coupling.

3. The stator laser welding machine as described in claim 1, characterized in that: The fixing mechanism (3) includes a clamping assembly (31), a centering assembly (32), and a photoelectric sensor (33). The clamping assembly (31) is located in the upper frame (1). There are several clamping assemblies (31), and they are all symmetrically distributed along the outer periphery of the worktable (21) at the same angle. The centering component (32) is located in the upper frame (1) and directly above the worktable (21); The photoelectric sensor (33) is fixedly installed in the upper frame (1) and symmetrically distributed on the outer periphery of the worktable (21). The photoelectric sensor (33) and the clamping assembly (31) do not interfere with each other.

4. A stator laser welding machine as described in claim 3, characterized in that: The clamping assembly (31) includes an arc-shaped clamping plate (311), a clamping cylinder (312), a fixing seat (313), and a pressure sensor (314). The concave surface of the arc-shaped clamping plate (311) faces the worktable (21), and the center of its convex surface is fixedly connected to the output end of the clamping cylinder (312). The clamping cylinder (312) is placed horizontally on the upper surface of the fixed seat (313) and fixed by bolts; The pressure sensor (314) is fixedly installed at the end of the output end of the clamping cylinder (312) and extends out of the concave surface of the arc-shaped clamping plate (311). A buffer pad is provided on the outside of the pressure sensor (314).

5. A stator laser welding machine as described in claim 3, characterized in that: The centering assembly (32) includes a centering cylinder (321) and a centering ejector pin (322); The centering cylinder (321) is vertically positioned directly above the workbench (21), and its bottom is fixed to the top of the upper frame (1) by bolts. The centering pin (322) is conical in shape, and its bottom is bolted to the output end of the centering cylinder (321). The centering cylinder (321) and centering ejector pin (322) are both coaxial with the worktable (21).

6. A stator laser welding machine as described in claim 3, characterized in that: The photoelectric sensor (33) is fixedly installed on the upper frame (1) and symmetrically distributed on both sides of the worktable (21).

7. A stator laser welding machine as described in claim 1, characterized in that: The laser welding mechanism (4) includes an adaptive carrier (41), a laser generator (42), and a temperature sensor (43). The adaptive carrier (41) includes a three-axis module, which is fixedly installed on the upper surface of the partition of the frame (1) by bolts and is symmetrically distributed along the outer periphery of the worktable (21); The laser generator (42) is fixedly mounted on the upper surface of the Z-axis module by bolts; The temperature sensor (43) is fixedly mounted on the side of the Z-axis module by bolts, and its sensor lens is aligned with the worktable (21). The laser welding mechanism (4) is symmetrically distributed along the outer periphery of the worktable (21) and does not interfere with the clamping assembly (31) and the photoelectric sensor (33).

8. A stator laser welding machine as described in claim 1 or 3, characterized in that: The lifting assembly (5) includes a bracket (51), a lifting motor (52), a guide rail (53), and a slider (54). The bracket (51) is arranged vertically along the frame (1), and its end is fixedly installed on the bottom surface of the partition of the frame (1); The lifting motor (52) is fixedly installed on the other end of the bracket (51) away from the partition of the frame (1), and its output end faces the partition of the frame (1); The guide rail (53) is fixedly installed on the bracket (51) along the vertical direction of the frame (1) and is on the same side as the lifting motor (52); The slider (54) is slidably disposed in the guide rail (53), and its end is connected to the output end of the lifting motor (52). The bottom of the worktable (21) is fixedly installed on the slider (54).

9. A stator laser welding machine as described in claim 1, characterized in that: The frame (1) is also provided with a cooling mechanism (7), which is located on the outside of the frame (1) and connected to the laser welding mechanism (4).

10. A stator laser welding machine as described in claim 9, characterized in that: The cooling mechanism (7) includes a cooling water tank (71), a cooling water pipe (72), a temperature control solenoid valve (73), and a water temperature sensor (74). The cooling water tank (71) is fixedly installed on the other side of the frame (1) opposite to the control panel (6); One end of the cooling water pipe (72) is connected to the outlet of the cooling water tank (71), and passes through the laser welding mechanism (4) to connect to the return port of the cooling water tank (71); The temperature control solenoid valve (73) is fixedly installed at the outlet of the cooling water tank (71) by bolts; The water temperature sensor (74) is located in the cooling water tank (71) and electrically connected to the control panel (6).

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