A brushless motor stator spot welding apparatus

Abstract

The application provides a kind of brushless motor stator spot welding equipment, it includes machine table, drive assembly, execution component, spot welding assembly, control assembly and identification component;Drive assembly, spot welding assembly are installed on machine table, execution component is slidably arranged on machine table and is connected with drive assembly, drive assembly drives execution component to reciprocate towards the direction close to or away from spot welding assembly.The end of execution component is provided with a receiving table, which is used to carry the stator and drive it to rotate;Identification component is arranged on one side of execution component, and the identification range covers the receiving table, which can collect the stator wire head information and output identification signal;Spot welding assembly is used for spot welding on the stator wire head on receiving table.Control assembly is respectively connected with identification component, drive assembly, spot welding assembly, can receive and process identification signal to judge whether the stator wire head is single wire head or double wire head, call matching welding parameters based on the result, and then control spot welding assembly to complete spot welding.

Description

Technical Field

[0001] This invention relates to the field of spot welding equipment technology, specifically to a brushless motor stator spot welding device. Background Technology

[0002] As a core component of the drive system, the quality of the stator's lead wire assembly directly determines the motor's energy efficiency, reliability, and service life. In the stator production process, the welding of the stator's lead wires is a critical step. The lead wires must be precisely connected to the terminals to form a stable conductive path. Lead wire types are categorized as single-strand single-lead and double-lead, and this type directly determines welding parameters such as laser power, welding time, and electrode spacing. Double-lead wires require a symmetrical heating process to ensure synchronous fusion of the two strands, while single-strand single-lead wires require a single-point focused welding scheme. The process parameters for these two types are not interchangeable. Single-strand wires, subjected to the high-power heating of double-lead welding, are prone to overheating and melting or insulation carbonization. Conversely, if double-strand wires are welded using the single-lead process, insufficient heating can lead to incomplete fusion between strands, resulting in a weak weld. Currently, many small and medium-sized motor production lines in the industry still rely on manual visual inspection to distinguish lead wire types. This method carries multiple uncontrollable risks, and manual identification is subject to subjective errors, which can lead to uneven heat distribution during welding. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a brushless motor stator spot welding equipment to solve the problem that the existing motor production line relies on manual identification of the type of stator wire ends.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A brushless motor stator spot welding device includes: a machine base, a drive assembly, an execution assembly, a spot welding assembly, a control assembly, and an identification assembly;

[0006] The driving component and the spot welding component are both mounted on the machine base; the execution component is slidably disposed on the machine base and connected to the driving component, the driving component drives the execution component to reciprocate towards or away from the spot welding component; one end of the execution component is provided with a receiving platform, the receiving platform is used to support the stator and drive the stator to rotate; the identification component is disposed on one side of the execution component, its identification range covers the receiving platform, the identification component is used to collect the stator wire end information and output an identification signal; the spot welding component is used to perform spot welding operation on the stator wire ends on the receiving platform; the control component is communicatively connected to the identification component, the driving component and the spot welding component respectively; the control component is configured to: receive and process the identification signal output by the identification component to determine whether the stator wire end type is a single wire end or a double wire end; based on the determination result, call the welding parameters that match the stator wire end type; control the spot welding component to spot weld the single or double wire ends of the stator.

[0007] By adopting the above technical solution, the core pain points of high reliance on manual labor, poor welding accuracy, and weak equipment adaptability in the current brushless motor stator spot welding process can be specifically addressed. On the one hand, the identification component accurately collects stator wire end information on the receiving platform, and the control component can automatically determine whether the wire end is a single or double wire end and call up matching welding parameters without manual intervention. This completely replaces the traditional manual visual identification selection mode, avoids the problem of human error, reduces labor costs, and improves work efficiency and parameter matching accuracy. On the other hand, the drive component drives the execution component to move stably back and forth along the machine table, which, together with the receiving platform, drives the stator to rotate and adjust the wire end orientation, forming a dual guarantee of "stable conveying + precise alignment". This solves the problem of stator positioning deviation, reduces defects such as incomplete welding and local overheating, and improves the product qualification rate. At the same time, the control component can automatically switch welding parameters based on the stator wire end type, adapting to both single and double wire end stators without equipment modification. This breaks through the traditional manual visual identification mode, improves equipment versatility, reduces enterprise investment costs, and simplifies the production line process.

[0008] Furthermore, the identification component includes a column, a mounting frame, and an image acquisition unit; the column is vertically mounted on the machine platform; the mounting frame includes a connecting end and a free end, the free end is disposed away from the connecting end, the mounting frame is located on one side of the connecting end and is slidably connected to the column; the image acquisition unit is mounted on the side of the mounting frame located at the free end, and the image acquisition unit is disposed facing the receiving platform.

[0009] By adopting the above technical solution, the acquisition of stator wire end information can be guaranteed in terms of both structural stability and adaptability flexibility, while ensuring accurate coverage of the target area. Firstly, the vertically fixed column provides a stable foundation for the mounting frame and image acquisition unit, preventing the acquisition position from shifting due to unstable support and ensuring structural reliability during long-term use. Secondly, the sliding connection between the mounting frame and the column allows the image acquisition unit at its free end to adjust its height along the column, adapting to stators of different diameters and heights. Regardless of stator size changes, adjusting the mounting frame height ensures the image acquisition unit always faces the stator wire end precisely on the receiving platform, avoiding recognition range shifts caused by stator size differences and improving the equipment's adaptability to multiple stator specifications. Simultaneously, the image acquisition unit, fixed to the free end of the mounting frame and facing the receiving platform, ensures stable coverage of the receiving platform area, continuously and accurately capturing stator wire end information, providing reliable raw data support for subsequent control components to process signals and determine wire end types.

[0010] Furthermore, the image acquisition unit includes a first image acquisition unit and a second image acquisition unit; with the central axis of the receiving platform as a reference, the first image acquisition unit is set along the vertical direction of the central axis to acquire a top view of the stator's wire end; the second image acquisition unit is set along an inclined direction at an angle to the central axis to acquire a side view of the stator's wire end; and the lenses of both the first and second image acquisition units are directed towards the wire end of the stator on the receiving platform.

[0011] By adopting the above technical solution, the comprehensiveness and accuracy of stator wire end information acquisition can be significantly improved, providing reliable data support for the control component to accurately determine the wire end type. With the central axis of the receiving platform as a reference, the first image acquisition unit is set vertically along the axis, accurately acquiring a top view of the stator wire end and clearly capturing the quantitative characteristics of the wire end (single or double wire ends). This is the core basis for the control component to determine the wire end type and match corresponding welding parameters. The second image acquisition unit is set at an angle along the axis, simultaneously acquiring a side view of the wire end, supplementing the capture of spatial information such as the radial extension length and side arrangement layers of the wire end. This effectively avoids the identification misjudgment problems caused by double wire end overlap or wire end tilting that may occur under a single top-view perspective. Both lenses are pointed towards the stator wire end on the receiving platform, forming a "top view + side view" dual-view collaborative acquisition mode, ensuring that the acquired wire end information is more complete and accurate. This lays a solid data foundation for the subsequent control component to accurately process signals and call matching welding parameters, thereby ensuring the quality of stator spot welding.

[0012] Furthermore, both the first image acquisition unit and the second image acquisition unit are industrial cameras.

[0013] By adopting the above technical solution, industrial cameras demonstrate significant stability advantages in adapting to industrial production scenarios. They can withstand minor vibrations during equipment operation, fluctuations in workshop lighting, and other environmental interferences, ensuring a continuous output of stable image signals during continuous production. This avoids recognition interruptions or data distortion caused by insufficient performance of the acquisition equipment, thus guaranteeing the continuity and reliability of the stator spot welding process.

[0014] Furthermore, the spot welding assembly includes a welding bracket, a cylinder unit, and an electrode unit; the welding bracket is vertically arranged and fixedly connected to the machine base, and a welding station corresponding to the receiving platform is configured on the welding bracket, the welding station being used to receive the stator carried by the receiving platform of the execution assembly; the cylinder unit is fixedly installed on the upper part of the welding bracket, its output shaft extending vertically downward, the output shaft of the cylinder unit being connected to at least a part of the electrode unit, and capable of driving at least a part of the electrode unit to move towards the welding station.

[0015] By adopting the above technical solution, reliable guarantees can be provided for stator wire end spot welding from the aspects of structural support, workstation docking, and drive automation: The welding bracket is vertically fixed to the machine base, providing a stable installation foundation for the cylinder unit and electrode unit, avoiding component displacement caused by bracket vibration during welding, and the welding station on the welding bracket corresponds to the receiving platform, accurately docking with the stator conveyed by the execution component, guiding the stator to be quickly and accurately positioned to avoid alignment deviation; At the same time, the cylinder unit fixed on the upper part of the welding bracket has its vertically downward-extending output shaft connected to the electrode unit and can drive the electrode unit to move to the welding station, realizing automated control of the electrode unit movement, reducing manual intervention and ensuring uniform contact pressure between the electrode unit and the stator wire end, avoiding defects such as incomplete welding and local overheating caused by uneven manual adjustment force, and the whole system works efficiently with the execution component and control component to ensure the stability, accuracy and automation of the stator wire end spot welding process.

[0016] Furthermore, the electrode unit includes an upper electrode and a lower electrode; the upper electrode is connected to the output shaft of the cylinder unit, the lower electrode is fixed on the welding bracket and located below the welding station, the upper electrode and the lower electrode are arranged opposite to each other, and a welding gap for accommodating the stator wire ends is formed between the lower electrode and the upper electrode; the upper electrode is connected to the positive terminal of the welding power supply, and the lower electrode is connected to the negative terminal of the welding power supply, forming a welding circuit after being energized; both the upper electrode and the lower electrode are made of conductive materials.

[0017] By adopting the above technical solution, core support is provided for stator wire head spot welding from three aspects: "welding foundation guarantee," "accurate alignment," and "welding quality stability," ensuring a reliable and efficient welding process. The upper electrode is connected to the output shaft of the cylinder unit and can move precisely towards the welding station under the drive of the cylinder. Together with the lower electrode fixed to the welding bracket and located below the welding station, the welding gap formed by the relative arrangement of the two can accurately accommodate the stator wire head, avoiding damage or poor contact caused by improper gap. At the same time, the upper electrode is connected to the positive terminal of the welding power supply, and the lower electrode is connected to the negative terminal. Combined with their conductive materials, a stable welding circuit can be formed after power is applied, ensuring that the current can pass evenly through the stator wire head to achieve fusion, avoiding problems such as uneven heating and incomplete welding caused by circuit instability. The overall structure works efficiently with the cylinder unit and welding station of the spot welding assembly. It can control the contact pressure between the upper electrode and the stator wire head through cylinder drive and ensure the stability of the welding position by relying on the fixed lower electrode, providing accurate and stable welding conditions for the stator wire head, and further improving the quality and consistency of spot welding.

[0018] Furthermore, the receiving platform includes a plurality of positioning parts extending toward the welding station, the positioning parts being distributed circumferentially along the receiving platform, and the positioning parts being used to clamp and position the stator.

[0019] By adopting the above technical solution: multiple positioning parts set on the receiving platform are distributed circumferentially and extend towards the welding station, which can clamp and limit the stator from multiple angles on the outer periphery of the stator, effectively preventing the stator from shifting or shaking during the process of being carried by the receiving platform, transported with the execution components (approaching / moving away from the welding station), or adjusting the orientation of the wire ends with the rotation of the receiving platform, ensuring that the stator is always in the preset bearing position; at the same time, the circumferentially distributed positioning parts can assist the stator in quick alignment, so that the stator wire ends can be accurately aligned with the welding station and the welding gap formed by the electrode unit, laying the positioning foundation for the subsequent accurate connection of the electrode unit to the wire ends and the stable formation of the welding circuit.

[0020] Furthermore, the execution component includes a preset guide rail, a servo motor, a movable slider, and a support base; the preset guide rail is fixedly mounted on the machine base; the movable slider slides in cooperation with the preset guide rail; the support base is fixedly mounted on the movable slider and fixedly connected to the servo motor; the receiving platform is connected to the output end of the servo motor through a coupling, and the servo motor can drive the receiving platform to rotate the stator around its own central axis.

[0021] By adopting the above technical solution: the preset guide rail is fixed to the machine base, and the moving slider slides in cooperation with the preset guide rail to form a stable linear conveying structure. This structure can drive the support base and the upper components (servo motor, receiving platform, stator) to move smoothly towards or away from the welding station, avoiding stator position deviation due to sliding offset during the conveying process and ensuring the linear accuracy of stator conveying. The support base is fixed to the moving slider and fixedly connected to the servo motor, providing a stable mounting carrier for the servo motor and preventing it from shifting due to vibration during operation. It can also synchronously transmit the linear movement of the moving slider, realizing synchronous and stable conveying of the servo motor and the receiving platform. At the same time, the servo motor is connected to the receiving platform through a coupling, which can drive the receiving platform to drive the stator to rotate precisely around its own central axis. The servo motor has higher driving precision and can accurately adjust the orientation of the stator wire ends according to the instructions of the control components, ensuring that the wire ends are precisely aligned with the welding gap formed by the welding station and electrode unit, laying the angular foundation for subsequent precise spot welding.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention integrates an identification component, a control component, an execution component, and a spot welding component to form a complete closed-loop device. The identification component is located on one side of the execution component, and its identification range completely covers the receiving platform. It can accurately collect stator wire end information and output identification signals. The control component is linked with the identification component, drive component, execution component, and spot welding component respectively. It can determine the type of stator wire end (single wire end or double wire end) without manual intervention and call the pre-stored matching welding parameters to form an automated link of "collection-judgment-parameter call-welding". Ultimately, it realizes stator wire end identification and parameter matching without manual intervention, improves parameter matching accuracy, reduces labor costs, and improves work efficiency.

[0024] 2. The drive component drives the execution component to reciprocate along the machine table, ensuring that the execution component moves the stator smoothly towards or away from the spot welding component, preventing stator displacement during transport. The receiving platform at one end of the execution component can rotate the stator, adjusting the orientation of the stator wire ends to ensure precise alignment between the wire ends and the spot welding component, improving welding alignment accuracy. At the same time, the control component can switch welding parameters based on the wire end type, adapting to both single-wire and double-wire stators without modifying the equipment structure, reducing equipment investment costs, minimizing welding defects caused by alignment deviations, and improving product qualification rate. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of the brushless motor stator spot welding equipment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the driver component and the execution component of this application;

[0028] Figure 3 This is a schematic diagram of the identification component structure of this application;

[0029] Figure 4 This is a schematic diagram of the spot welding assembly structure of this application;

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Brushless motor stator spot welding equipment; 10. Drive assembly; 101. Cylinder; 102. Piston rod; 103. Floating joint; 20. Actuation assembly; 201. Preset guide rail; 202. Moving slider; 203. Servo motor; 204. Receiving platform; 205. Support base; 231. Coupling; 241. Positioning part; 30. Recognition assembly; 301. Column; 302. Mounting bracket; 303. Image acquisition unit; 311. Slide groove; 312. Sliding part; 321. Connecting end; 322. Free end; 331. First image acquisition unit; 332. Second image acquisition unit; 40. Spot welding assembly; 401. Welding bracket; 402. Cylinder unit; 403. Electrode unit; 411. Welding station; 431. Upper electrode; 432. Lower electrode; 50. Control assembly; 60. Machine base. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] See appendix Figures 1 to 4 As shown, this embodiment provides a brushless motor stator spot welding equipment 100, which includes a machine base 60, a drive component 10, an execution component 20, a spot welding component 40, a control component 50, and an identification component 30.

[0034] Both the drive assembly 10 and the spot welding assembly 40 are mounted on the machine base 60. The execution assembly 20 is slidably disposed on the machine base 60 and connected to the drive assembly 10. The drive assembly 10 drives the execution assembly 20 to reciprocate towards or away from the spot welding assembly 40. One end of the execution assembly 20 is provided with a receiving platform 204, which is used to support the stator and drive the stator to rotate. The identification assembly 30 is disposed on one side of the execution assembly 20, and the identification range of the identification assembly 30 covers the receiving platform 204. The identification assembly 30 is used for sampling. The stator wire end information is collected and an identification signal is output; the spot welding component 40 is used to perform spot welding operation on the stator wire ends on the receiving platform 204; the control component 50 is communicatively connected to the identification component 30, the drive component 10 and the spot welding component 40 respectively; the control component 50 is configured to: receive and process the identification signal output by the identification component 30 to determine whether the stator wire end type is a single wire end or a double wire end; based on the determination result, call the welding parameters that match the stator wire end type; the control component 50 performs spot welding on the single wire end or double wire end of the stator.

[0035] Reference Figure 1 As shown, the machine base 60, which serves as the support for the entire equipment, is typically forged and welded from high-rigidity metal materials. Its table surface is precision machined to provide a precise mounting reference for the drive assembly 10, spot welding assembly 40, identification assembly 30, and execution assembly 20.

[0036] Reference Figure 2 As shown, the drive assembly 10 is fixedly installed on the machine base 60. The drive assembly 10 uses a cylinder 101, which is located on one side of the execution assembly 20. The cylinder 101 includes a piston rod 102, the end of which is connected to the support seat 205 of the execution assembly 20 via a floating joint 103. The control assembly 50 establishes a communication connection with the solenoid directional valve of the cylinder 101 to form a linkage control logic: when the identification assembly 30 completes the identification of the stator wire ends, the control assembly 50 sends an action command to the solenoid directional valve, driving the piston rod 102 to extend and move the execution assembly 20 toward the spot welding assembly 40; if the identification is not completed or the signal is invalid, the drive assembly 10 remains stationary to ensure the orderly progress of the process.

[0037] The actuator 20 is slidably mounted on the machine tool 60. Specifically, the actuator 20 includes a preset guide rail 201, a movable slider 202, a servo motor 203, a receiving platform 204, and a support base 205. The preset guide rail 201 is fixedly mounted on the table surface of the machine tool 60 by fasteners. The extension direction of the preset guide rail 201 is parallel to the center line of the welding station 411 of the spot welding assembly 40, providing guidance for the sliding of the actuator 20. The movable slider 202 forms a sliding engagement with the preset guide rail 201 to realize the sliding slider 202 along the preset guide rail 201. The guide rail 201 slides stably, and the support base 205 is fixedly installed on the movable slider 202 and fixedly connected to the servo motor 203 to form a stable support for the servo motor 203. Preferably, a servo motor 203 with a reducer is used, and its output shaft is coaxially connected to the receiving platform 204 through a coupling 231 to ensure that there is no radial runout in the power transmission. The servo motor 203 is communicatively connected to the control component 50 and can receive the rotation angle command from the control component 50 to drive the receiving platform 204 to drive the stator to rotate precisely around its own central axis.

[0038] The output shaft of the servo motor 203 is coaxially connected to the receiving platform 204 via a coupling 231. The receiving platform 204 is used to support the stator to be welded. The end of the receiving platform 204 is provided with multiple positioning parts 241 extending towards the spot welding assembly 40. The positioning parts 241 are evenly distributed around the circumference of the receiving platform 204. The positioning parts 241 are used to clamp and precisely position the stator. The positioning parts 241 will form a circumferential fit with the outer circumference of the stator. By clamping the stator with three positioning parts 241, the initial fixation of the stator is achieved, which avoids the stator from shifting or shaking on the receiving platform 204. The inner edge of the positioning part 241 is rounded to prevent scratching the surface of the stator, effectively preventing movement or scratching of the stator surface during the welding process.

[0039] Reference Figure 3As shown, the recognition component 30 includes a column 301, a mounting frame 302, and an image acquisition unit 303. The column 301 is vertically mounted on the machine base 60. The mounting frame 302 includes a connecting end 321 and a free end 322. The free end 322 is located away from the connecting end 321. The mounting frame 302 is located on one side of the connecting end 321 and is slidably connected to the column 301. Specifically, the column 301 serves as the mounting base for the recognition component 30. Its outer circumferential surface is machined with multiple grooves 311 distributed along its length. The grooves 311 have a concave cross-section, providing guide rails for adjusting the height of the mounting frame 302. The mounting frame 302 is generally [missing information - likely a specific shape or structure]. The mounting bracket 302 has a rod-shaped or arm-shaped structure with a sliding member 312 at its end that matches the sliding groove 311 of the column 301. The sliding member 312 can be embedded in any sliding groove 311 and slide up and down along the groove to achieve overall height adjustment of the mounting bracket 302. When adjusted to the target height, the mounting bracket 302 and the column 301 are fixed relative to each other by a locking member (such as a bolt) passing through the positioning hole on the side wall of the sliding member 312 and the sliding groove 311, thus completing the height locking. The free end 322 of the mounting bracket 302 is set away from the connecting end 321 and extends towards the receiving platform 204 of the execution component 20. An image acquisition unit 303 is fixedly installed on its free end 322. The image acquisition unit 303 faces the receiving platform 204, and by adjusting the height of the mounting bracket 302, it can adapt to the recognition requirements of stators of different sizes, ensuring that the image acquisition unit 303 is always aligned with the stator winding wire end on the receiving platform 204, and ensuring that the recognition range stably covers the stator placement area.

[0040] This structural design achieves height adjustability of the image acquisition unit 303 through the sliding connection between the column 301 and the mounting bracket 302, and ensures accurate relative position between the image acquisition unit 303 and the receiving platform 204 through the extended layout of the mounting bracket 302, providing a stable hardware foundation for subsequent stator wire end recognition.

[0041] The image acquisition unit 303 includes a first image acquisition unit 331 and a second image acquisition unit 332. Both the first image acquisition unit 331 and the second image acquisition unit 332 are mounted on the mounting bracket 302, and the acquisition direction is precisely pointed to the stator wire ends on the receiving platform 204. Through the coordinated acquisition of the first image acquisition unit 331 and the second image acquisition unit 332, the stator wire ends can be identified in all directions.

[0042] The first image acquisition unit 331 is set at a top-down angle, and its recognition range covers the top area of ​​the stator wire ends. It is used to obtain a top view of the stator wire ends and can clearly capture the type of the stator wire ends (single wire ends or double wire ends), providing a core basis for the control component 50 to determine the wire end type. The second image acquisition unit 332 is set at a side angle, and its field of view focuses on the side area of ​​the stator wire ends. It is used to obtain a side view of the stator wire ends and can capture the radial extension length and side arrangement layers of the stator wire ends, supplementing the spatial information not covered by the top view and improving the recognition accuracy.

[0043] The first image acquisition unit 331 and the second image acquisition unit 332 rise and fall synchronously with the height adjustment of the mounting bracket 302, and can be adjusted through the free end 322 of the mounting bracket 302 to calibrate their orientation respectively, so as to ensure that the top and side view images of the stator wire ends can be stably acquired regardless of the stator specifications, and together output comprehensive recognition signals to the control component 50 to ensure the accuracy of subsequent welding positioning.

[0044] Specifically, both the first image acquisition unit 331 and the second image acquisition unit 332 are industrial cameras.

[0045] Reference Figure 4 As shown, the spot welding assembly 40 includes a welding bracket 401, an electrode unit 403, and a cylinder unit 402. The welding bracket 401 is vertically arranged and fixedly connected to the machine base 60. The welding bracket 401 is equipped with a welding station 411 corresponding to the receiving platform 204. The welding station 411 is used to receive the stator carried by the receiving platform 204 of the execution assembly 20. The cylinder unit 402 is fixedly installed on the upper part of the welding bracket 401, and its output shaft extends vertically downward. The output shaft of the cylinder unit 402 is connected to at least a part of the electrode unit 403 and can drive at least a part of the electrode unit 403 to move towards the welding station 411.

[0046] Specifically, the welding bracket 401 is made of high-rigidity material and forms a rigid connection with the machine base 60 that cannot be moved relative to each other, ensuring that the bracket does not vibrate or shift during the welding process, and providing a stable installation foundation for subsequent components. The welding bracket 401 is equipped with a welding station 411 that precisely corresponds to the position of the receiving platform 204 of the execution component 20, and the central axis of the welding station 411 is coaxial with the rotation axis of the receiving platform 204.

[0047] The electrode unit 403 includes an upper electrode 431 and a lower electrode 432. The upper electrode 431 is connected to the output shaft of the cylinder unit 402, and the lower electrode 432 is fixed on the welding bracket 401 and located below the welding station 411. The upper electrode 431 and the lower electrode 432 are arranged opposite to each other, and a welding gap for accommodating the stator wire ends is formed between the lower electrode 432 and the upper electrode 431. The upper electrode 431 is connected to the positive terminal of the welding power source, and the lower electrode 432 is connected to the negative terminal of the welding power source, forming a welding circuit after energization. The top of the upper electrode 431 is connected to the output shaft of the cylinder unit 402. The shaft connection allows for vertical reciprocating movement along the output shaft. The end face of the upper electrode 431 is precision ground to ensure a smooth and flat surface, thereby increasing the contact area with the stator wire ends and preventing "false soldering" or "local overheating and burning" during welding. The lower electrode 432 is mounted on the welding station 411 of the welding bracket 401 and is located directly below the welding station 411, with an upper-lower relative distribution to the upper electrode 431. The upper end face of the lower electrode 432 is also precision machined, ensuring that the stator wire ends are precisely within the welding gap between the upper electrode 431 and the lower electrode 432.

[0048] Reference Figures 1 to 4 As shown, the control component 50 is based on a PLC and is equipped with a touch screen. It is connected to the identification component 30, the cylinder 101 of the drive component 10, the servo motor 203 of the execution component 20, the cylinder unit 402 of the spot welding component 40, and the welding power supply. Its specific functions are as follows.

[0049] Signal processing and judgment: Receive image data transmitted by the recognition component 30, extract the stator wire end features through the built-in image recognition algorithm, compare with the pre-stored single or double wire end templates, and determine the current stator wire end type. If the recognition result matches the template, it is determined to be a valid signal; otherwise, an alarm prompt is issued.

[0050] Parameter recall: The control component 50 has two sets of welding parameters pre-stored, corresponding to single wire head or double wire head respectively (single wire head: welding current 800A, energizing time 0.5s, electrode pressure 500N; double wire head: welding current 1000A, energizing time 0.8s, electrode pressure 600N). Based on the stator wire head type, the corresponding parameter set is automatically recalled and transmitted to the welding power source.

[0051] The linkage control process is as follows: After recognition is completed, the control component 50 sends a rotation command to the servo motor 203 of the execution component 20. The servo motor 203 drives the receiving platform 204 to rotate the stator, so that the wire end of the stator is aligned with the welding station 411. After the wire end is aligned, the control component 50 sends an action command to the drive component 10. The drive component 10 drives the execution component 20 to move the stator towards the welding station 411. When the execution component 20 moves to the preset position, the drive component 10 sends a position signal back to the control component 50. The control component 50 sends a welding preparation command to the cylinder unit 402 of the spot welding component 40, driving the upper electrode 431 to descend. After the upper electrode 431 is in position, the pressure value is detected by the pressure sensor. The control component 50 sends a welding start command to the welding power supply and executes the spot welding operation according to the called parameters.

[0052] Refer to 1 to Figure 4 As shown, the workflow is as follows: The operator places the stator to be welded on the receiving platform 204, and the outer circumference of the stator is clamped and positioned by the positioning part 241; the control component 50 triggers the recognition component 30 to start, and the first image acquisition unit 331 and the second image acquisition unit 332 respectively acquire the top view and side view of the stator wire end, and the image data is transmitted to the control component 50; the control component 50 processes the image and determines whether the stator wire end type is a single wire end or a double wire end, and calls the corresponding welding parameters; the control component 50 sends a command to the servo motor 203 of the execution component 20 to drive the receiving platform 204 to rotate the stator, so that... The stator wire ends are adjusted to align with the welding station 411; the control component 50 sends a command to the drive component 10, the piston rod 102 of the cylinder 101 of the drive component 10 extends, driving the execution component 20 to move along the preset guide rail 201 to the welding station 411; after the execution component 20 is in place, the control component 50 sends a command to the cylinder unit 402 of the spot welding component 40, the upper electrode 431 descends to the welding station 411 to perform spot welding; after welding is completed, the upper electrode 431 is reset, the execution component 20 returns to the initial position, the operator removes the welded stator, and the equipment enters the next cycle.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brushless motor stator spot welding device, characterized in that, include: The machine base (60), drive assembly (10), execution assembly (20), spot welding assembly (40), control assembly (50) and identification assembly (30); The drive assembly (10) and the spot welding assembly (40) are both mounted on the machine base (60); the execution assembly (20) is slidably disposed on the machine base (60) and connected to the drive assembly (10), the drive assembly (10) drives the execution assembly (20) to reciprocate towards or away from the spot welding assembly (40); one end of the execution assembly (20) is provided with a receiving platform (204), the receiving platform (204) is used to support the stator and drive the stator to rotate; the identification assembly (30) is disposed on one side of the execution assembly (20), its identification range covers the receiving platform (204), the identification assembly (30) The stator wire end information is collected and an identification signal is output; the spot welding component (40) is used to perform spot welding operation on the stator wire ends on the receiving platform (204); the control component (50) is communicatively connected to the identification component (30), the drive component (10) and the spot welding component (40); the control component (50) is configured to: receive and process the identification signal output by the identification component (30) to determine whether the stator wire end type is a single wire end or a double wire end; based on the determination result, call the welding parameters that match the stator wire end type; and control the spot welding component (40) to spot weld the single wire end or double wire end of the stator.

2. The brushless motor stator spot welding equipment according to claim 1, characterized in that, The recognition component (30) includes a column (301), a mounting frame (302), and an image acquisition unit (303); the column (301) is vertically mounted on the machine base (60); the mounting frame (302) includes a connecting end (321) and a free end (322), the free end (322) is located away from the connecting end (321), the mounting frame (302) is located on one side of the connecting end (321) and is slidably connected to the column (301); the image acquisition unit (303) is mounted on one side of the mounting frame (302) located on the free end (322), and the image acquisition unit (303) is positioned facing the receiving platform (204).

3. The brushless motor stator spot welding equipment according to claim 2, characterized in that, The image acquisition unit (303) includes a first image acquisition unit (331) and a second image acquisition unit (332). With the central axis of the receiving platform (204) as a reference, the first image acquisition unit (331) is set in the vertical direction of the central axis to acquire a top view of the stator wire ends. The second image acquisition unit (332) is set in the inclined direction at an angle to the central axis to acquire a side view of the stator wire ends. The lenses of the first image acquisition unit (331) and the second image acquisition unit (332) are both facing the stator wire ends on the receiving platform (204).

4. The brushless motor stator spot welding equipment according to claim 3, characterized in that, Both the first image acquisition unit (331) and the second image acquisition unit (332) are industrial cameras.

5. The brushless motor stator spot welding equipment according to claim 1, characterized in that, The spot welding assembly (40) includes a welding bracket (401), a cylinder unit (402), and an electrode unit (403). The welding bracket (401) is vertically arranged and fixedly connected to the machine base (60). The welding bracket (401) is equipped with a welding station (411) corresponding to the receiving platform (204). The welding station (411) is used to receive the stator carried by the receiving platform (204) of the execution assembly (20). The cylinder unit (402) is fixedly installed on the upper part of the welding bracket (401), and its output shaft extends vertically downward. The output shaft of the cylinder unit (402) is connected to at least a part of the electrode unit (403) and can drive at least a part of the electrode unit (403) to move towards the welding station (411).

6. The brushless motor stator spot welding equipment according to claim 5, characterized in that, The electrode unit (403) includes an upper electrode (431) and a lower electrode (432); the upper electrode (431) is connected to the output shaft of the cylinder unit (402), and the lower electrode (432) is fixed on the welding bracket (401) and located below the welding station (411). The upper electrode (431) and the lower electrode (432) are arranged opposite to each other, and a welding gap for accommodating the stator wire ends is formed between the lower electrode (432) and the upper electrode (431). Both the upper electrode (431) and the lower electrode (432) are made of conductive material.

7. The brushless motor stator spot welding equipment according to claim 5, characterized in that, The receiving platform (204) includes a plurality of positioning parts (241) extending toward the welding station (411). The positioning parts (241) are distributed circumferentially along the receiving platform (204) and are used to clamp and position the stator.

8. The brushless motor stator spot welding equipment according to claim 1, characterized in that, The execution component (20) includes a preset guide rail (201), a servo motor (203), a movable slider (202), and a support base (205); the preset guide rail (201) is fixedly mounted on the machine base (60); the movable slider (202) is slidably engaged with the preset guide rail (201); the support base (205) is fixedly mounted on the movable slider (202) and fixedly connected to the servo motor (203); the receiving platform (204) is connected to the output end of the servo motor (203).

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