Automatic welding system for winding terminal in stator

Abstract

The invention provides an automatic welding system for winding terminals in a stator. The automatic welding system comprises a multi-speed transmission chain, a stator bearing table, a stator rotating exchange table, a welding module and a feeding and carrying ZY axis assembly, the multi-speed transmission chain extends in the first horizontal direction, and the stator bearing table is arranged on a multi-speed transmission chain module and can be used for bearing a stator; the stator rotation exchange table is arranged on the side of the multi-speed transmission chain module, a feeding station and a machining station are arranged on the stator rotation exchange table, and the feeding station and the machining station can be switched through rotation of the stator rotation exchange table; the welding module is arranged above a machining station of the stator rotating exchange table and can be used for welding winding terminals in the stator located on the machining station; the feeding carrying ZY-axis assembly is configured to carry the stator between the multi-speed conveying chain module and the stator rotating exchange table. The welding efficiency and effect of the stator winding terminal can be improved.

Description

Technical Field

[0001] This application relates to the field of motor manufacturing equipment technology, and in particular to an automated welding system for stator winding terminals. Background Technology

[0002] As the core electromagnetic component of motors (such as drive motors for new energy vehicles, industrial servo motors, and high-efficiency home appliance motors), the stator generates an alternating magnetic field to drive the rotor to rotate during motor operation, thereby completing the efficient conversion of electrical energy into mechanical energy.

[0003] like Figure 1 The diagram shows the structure of stator 1, which includes multiple winding terminals 11. These winding terminals 11 are the leads of windings 12 and are arranged in a circular array on the end face of stator 1. In practical applications, adjacent winding terminals 11 need to be welded to achieve electrical continuity, in order to complete the phase sequence connection and circuit construction of windings 12, thereby ensuring the normal operation of the motor. For example, in Figure 1 In the structural diagram shown, the two adjacent winding terminals 11 within the red box need to be welded. The welding quality of the winding terminals 11 has a significant impact on the electrical performance, mechanical strength, and long-term operational stability of the stator 1.

[0004] Currently, the welding of winding terminals 11 is mainly completed through semi-automatic welding. This method typically involves manually loading the stator 1 first, followed by welding adjacent winding terminals 11 one by one using a programmed welding device (such as a welding torch). However, due to the small spacing between adjacent winding terminals 11 in the stator 1 and the dense distribution of the terminal array, errors in loading position are prone to occur during manual loading, leading to problems such as welding position deviation, uneven welds, incomplete welds, or missed welds. These defects not only reduce the electrical conductivity of the stator 1 but may also cause safety hazards such as localized overheating and short circuits, seriously affecting the overall performance and operational reliability of the stator 1. Summary of the Invention

[0005] The purpose of this application is to provide an automated welding system for stator winding terminals to solve the problems in the prior art.

[0006] To address the aforementioned technical problems, this application provides an automated welding system for stator winding terminals, comprising:

[0007] A high-speed transmission chain is set to extend along the first horizontal direction;

[0008] A stator support platform, mounted on the double-speed transmission chain module, is used to support the stator;

[0009] A stator rotary exchange table is located to the side of the double-speed transmission chain module. The stator rotary exchange table is equipped with a loading station and a processing station, wherein the loading station and the processing station are switched by rotating the stator rotary exchange table.

[0010] A welding module is located above the processing station of the stator rotary exchange table and is used to perform welding operations on the winding terminals of the stator located at the processing station.

[0011] The ZY axis loading and handling assembly is configured to transport the stator between the speed-multiplying transmission chain module and the stator rotary exchange table.

[0012] Preferably, the loading and conveying ZY axis assembly includes a first drive unit capable of reciprocating along a second horizontal direction, and a gripping unit capable of reciprocating along a vertical direction and gripping the stator, wherein the second horizontal direction is perpendicular to the first horizontal direction; and,

[0013] The gripping part is disposed on the first driving part.

[0014] Preferably, the automated welding system further includes a cooling gas nozzle, wherein the cooling gas nozzle is located adjacent to the loading station of the stator rotary exchange table.

[0015] Preferably, the automated welding system further includes a welding fume purification module, which is located near the welding module and is used to purify the fumes generated during the welding process.

[0016] Preferably, the automated welding system further includes a sorting and unloading module, wherein the sorting and unloading module is located downstream of the transmission of the double-speed transmission chain module.

[0017] Preferably, the sorting and unloading module includes a vision inspection module, a qualified product unloading line, and an NG product unloading line. The vision inspection module is used to detect whether the stator transmitted to its station is qualified or not, and to control the stator to be introduced into the qualified product unloading line or the NG product unloading line according to the detection result.

[0018] Preferably, the qualified product unloading line is equipped with a heat dissipation device, and the stator flows through the heat dissipation device (283) to achieve heat dissipation.

[0019] Preferably, the visual inspection module includes an image acquisition device and a detection unit, wherein:

[0020] The image acquisition device is located near the end of the double-speed transmission chain module and is used to vertically and downward acquire the orthographic projection image of the stator transmitted from the double-speed transmission chain module.

[0021] The detection unit identifies the orthographic projection image to determine whether the stator is qualified or not, and obtains the detection result.

[0022] Preferably, the loading and handling ZY axis assembly is specifically configured to perform a handling process including the following steps:

[0023] Move along the second horizontal direction to above the double-speed transmission chain module and grab the stator to be welded located on the stator support platform;

[0024] The stator to be welded is carried back along the second horizontal direction and lowered along the vertical direction, and the stator to be welded is placed at the loading station of the stator rotary exchange table;

[0025] After the stator terminals are welded at the processing station, the processed stator is picked up from the processing station.

[0026] The machined stator is carried upwards in the vertical direction and moved in the second horizontal direction to place the machined stator back onto the stator support platform on the double-speed transmission chain module.

[0027] Preferably, the stator support platform is provided with positioning pins that match the inner contour of the stator; or,

[0028] The stator support platform is provided with a positioning groove that matches the outer contour of the stator.

[0029] The automated welding system provided in this application includes a high-speed transmission chain, a stator support platform, a stator rotary exchange platform, a welding module, and a loading and transport ZY-axis assembly. The high-speed transmission chain extends along a first horizontal direction. The stator support platform is mounted on the high-speed transmission chain module and can be used to support the stator. The stator rotary exchange platform is located to the side of the high-speed transmission chain module and has a loading station and a processing station, which can be switched by rotating the stator rotary exchange platform. The welding module is located above the processing station of the stator rotary exchange platform and can be used to perform welding operations on the winding terminals of the stator located at the processing station. The loading and transport ZY-axis assembly is configured to transport the stator between the high-speed transmission chain module and the stator rotary exchange platform. Therefore, this automated welding system can automatically load the stator to be welded onto the loading station of the stator rotary exchange table. Then, the stator rotary exchange table itself rotates to switch to a processing station to weld its winding terminals. Since the stator to be welded is automatically loaded onto the loading station of the stator rotary exchange table and fixed, it is less likely to have loading position deviation errors compared to manual loading. This can reduce problems such as welding position deviation, uneven weld, incomplete welding or missing welding, thereby improving the overall welding performance, operational reliability and efficiency of the stator. Attached Figure Description

[0030] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a stator in the prior art;

[0032] Figure 2 This is a top view of an automated welding system for stator winding terminals provided in an embodiment of this application;

[0033] Figure 3 This is a three-dimensional structural schematic diagram of an automated welding system for stator winding terminals provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the stator support platform in the automated welding system provided in this application embodiment.

[0035] In the above view: 1-Stator; 11-Winding terminal; 12-Winding; 21-Multi-speed transmission chain; 22-Stator support platform; 23-Stator rotary exchange platform; 24-Welding module; 25-Loading and handling ZY axis assembly; 26-Cooling gas nozzle; 27-Welding fume purification module; 28-Classification and unloading module; 29-Y guide rail; 221-Positioning pin; 231-Loading station; 232-Processing station; 251-First drive unit; 252-Gripping unit; 281-Qualified product unloading line; 282-NG product unloading line; 283-Heat dissipation device. Detailed Implementation

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0039] As mentioned earlier, the welding of winding terminals 11 is mainly completed through a semi-automatic welding method. This method typically involves manually loading the stator 1 first, followed by welding adjacent winding terminals 11 one by one using a programmed welding device (such as a welding torch). However, due to the small spacing between adjacent winding terminals 11 in the stator 1 and the dense distribution of the terminal array, errors in loading position are prone to occur during manual loading, leading to problems such as welding position deviation, uneven welds, incomplete welds, or missed welds. These defects not only reduce the electrical conductivity of the stator 1 but may also cause safety hazards such as localized overheating and short circuits, seriously affecting the overall performance and operational reliability of the stator 1.

[0040] In view of this, embodiments of this application provide an automated welding system for stator winding terminals, which can solve the problems in the prior art. For ease of understanding, the structure of this automated welding system will be described first, such as... Figure 2 The diagram shown is a schematic of the specific structure of the automated welding system. The automated welding system includes a high-speed transmission chain 21, a stator support platform 22, a stator rotary exchange platform 23, a welding module 24, and a loading and handling ZY axis assembly 25. These components will be described separately later.

[0041] Further integration Figure 2 and Figure 3 As shown, the speed-multiplying transmission chain 21 extends along the first horizontal direction, for example, as... Figure 2 In the schematic diagram shown, the first horizontal direction can be the X-axis direction, and the corresponding second horizontal direction can be the Y-axis direction. The second horizontal direction is perpendicular to the first horizontal direction, and the vertical direction can be the Z-axis direction, which is perpendicular to the plane formed by the X-axis and Y-axis directions.

[0042] The function of the speed-multiplying conveyor chain 21 is to transport materials in the first horizontal direction. For example, the stator support platform 22 can be mounted on the speed-multiplying conveyor chain module 21, allowing the stator support platform 22 to be transported along the first horizontal direction on the speed-multiplying conveyor chain 21. Specifically, the stator support platform 22 can be used to support the stator; the stator to be welded (referred to as the stator to be welded) can be placed on the stator support platform 22 and then transported along the first horizontal direction via the speed-multiplying conveyor chain 21.

[0043] In practical applications, the speed-multiplying transmission chain 21 can be, for example, a track, a guide rail, or a device with similar transmission functions. In this case, the stator support platform 22 can be mounted on the speed-multiplying transmission chain 21 by coupling, snap-fitting, or bonding, thereby enabling it to transmit along the first horizontal direction. For example, the speed-multiplying transmission chain 21 can be a guide rail arranged along the first horizontal direction, and the bottom of the stator support platform 22 can be mounted on the guide rail by snap-fitting, thereby enabling horizontal transmission along the guide rail in the first horizontal direction.

[0044] In addition, as mentioned above, the stator support platform 22 can be used to support the stator. In practical applications, to prevent the stator from shifting position (the stator needs to be positioned in a specific location within the stator support platform 22 for easy loading and handling of the ZY axis assembly 25), a positioning groove or positioning pin can usually be provided on the stator support platform 22 to fix the stator on the stator support platform 22. One method is to provide a positioning pin 221 on the stator support platform 22. This positioning pin 221 can match (partially or completely) the inner contour of the stator, allowing the inner contour of the stator to be inserted into the positioning pin 221 to fix the stator.

[0045] The second method is to set a positioning groove on the stator support platform 22. The positioning groove can match the outer contour of the stator (including partial or complete matching), so that the stator can be placed into the positioning groove to fix the stator.

[0046] Of course, considering that in order to facilitate the loading and handling of the ZY axis assembly 25 to grip the stator, if the stator support platform 22 adopts the first method to set the positioning pin, the loading and handling ZY axis assembly 25 can use the gripping method to grip and handle the stator from the outer contour; if the second method is adopted to set the positioning groove, the loading and handling ZY axis assembly 25 can grip and handle the stator from the inner contour.

[0047] The stator rotary exchange table 23 is located to the side of the double-speed transmission chain module 21. The loading and transporting ZY axis assembly 25 is configured to transport stators between the double-speed transmission chain module 21 and the stator rotary exchange table 23. Specifically, the stator rotary exchange table 23 can pick up the stator to be welded from the stator support platform 22 of the double-speed transmission chain module 21 and transport it to the stator rotary exchange table 23. It can also pick up the processed stator from the stator rotary exchange table 23 and transport it to the stator support platform 22 of the double-speed transmission chain module 21. Therefore, the loading and transporting ZY axis assembly 25 is specifically configured to perform a transport process including the following steps: Firstly, it can move along the second horizontal direction to above the speed-multiplying transmission chain module 21, grab the stator to be welded located on the stator support platform 22, and carry the stator to be welded back along the second horizontal direction and down along the vertical direction, placing the stator to be welded at the loading station 231 of the stator rotary exchange table 23; Secondly, after the stator at the processing station 232 is welded, it grabs the processed stator from the processing station 232, carries the processed stator up along the vertical direction and moves along the second horizontal direction, placing the processed stator back on the stator support platform 22 on the speed-multiplying transmission chain module 21.

[0048] The stator rotary exchange table 23 is equipped with a loading station 231 and a processing station 232. The loading station 231 facilitates the loading and handling of the ZY-axis assembly 25, which picks up and transports the stator to be welded from the stator support table 22. In other words, the loading and handling ZY-axis assembly 25 can place the stator to be welded, picked up and transported from the stator support table 22, into the loading station 231. The processing station 232 is set up to facilitate the welding operation of the welding module 24. The welding module 24 is set above the processing station 232 of the stator rotary exchange table 23, so that the welding module 24 can perform welding operations on the winding terminals of the stator located at the processing station 23.

[0049] It should be noted that the loading station 231 and the processing station 232 can be switched by rotating the stator rotary exchange table 23. In this way, the loading and transporting ZY axis assembly 25 picks up and transports the stator to be welded from the stator support table 22 and places the stator to be welded into the loading station 231. At this time, the welding module 24 can simultaneously weld the winding terminals of the stator (referred to as the second stator) on the processing station 232. After the second stator is welded, the loading station 231 and the processing station 232 are switched by rotating the stator rotary exchange table 23 itself. The original loading station 231 with the stator to be welded is switched to the processing station 232, and the original processing station 232 is switched to the loading station 231. In this way, the welding module 24 can further weld the winding terminals on the stator to be welded.

[0050] In addition, after the stator rotary exchange table 23 rotates to switch between the loading station 231 and the processing station 232, the original processing station 232 is simultaneously switched to the loading station 231. At this time, since the second stator in the loading station 231 has been welded, the loading and transporting ZY axis assembly 25 can also grab the second stator, that is, the processed stator, from the loading station 231 and transport it to the stator carrier platform 22 on the double speed transmission chain module 21. The processed stator is then transported through the double speed transmission chain module 21, thereby enabling the loading and transporting ZY axis assembly 25 to transport the stator between the double speed transmission chain module 21 and the stator rotary exchange table 23.

[0051] Regarding the positions of the loading station 231 and the processing station 232 on the stator rotary exchange table 23, the loading station 231 can be located directly below the axis of the stator rotary exchange table 23, thus bringing it close to the stator support platform 22 for easy loading and transport of the ZY axis assembly 25 for stator transport. The processing station 232 can be located directly above the axis of the stator rotary exchange table 23, allowing the stator rotary exchange table 23 to rotate 180 degrees to switch the positions of the two stations during rotation. Of course, to improve processing efficiency, multiple loading stations 231 and processing stations 232 are usually evenly distributed on the stator rotary exchange table 23.

[0052] The structure of the loading and transporting ZY axis assembly 25 can be further described here. Considering that the function of the loading and transporting ZY axis assembly 25 is to transport the stator between the speed-multiplying transmission chain module 21 and the stator rotary exchange table 23, one structure of the loading and transporting ZY axis assembly 25 can be a robot, thereby using the movement of the robot to grasp and transport the stator.

[0053] One structure of the loading and handling ZY axis assembly 25 may include a first drive unit 251 capable of reciprocating along a second horizontal direction, and a gripping unit 252 capable of reciprocating along a vertical direction and gripping the stator, wherein the gripping unit 252 is disposed on the first drive unit 251.

[0054] When it is necessary to pick up the stator to be welded from the speed-multiplying transmission chain module 21, the first drive unit 251 can move along the second horizontal direction to the vicinity of the speed-multiplying transmission chain module 21, and then the gripping unit 252 moves downward along the vertical direction to reduce the height of the gripping unit 252 and then pick up the stator to be welded; afterwards, the gripping unit 252 can move upward along the vertical direction again, and then move back to the vicinity of the stator rotary exchange table 23 through the first drive unit 251, and then move downward again through the gripping unit 252 to place the stator to be welded into the loading station 231 in the stator rotary exchange table 23.

[0055] To enable the first drive unit 251 to reciprocate along the second horizontal direction, the automated welding system may further include a Y-guide rail 29, and the first drive unit 251 may be disposed on the Y-guide rail 29, thereby enabling it to reciprocate along the second horizontal direction via the Y-guide rail 29. In practical applications, the gripping unit 252 may be a robotic gripper, and the inner wall curvature of the robotic gripper may match the outer contour of the stator, thereby facilitating the gripping of the stator.

[0056] The welding module 24 described above functions to weld the winding terminals in the stator. Therefore, the welding module 24 may include devices such as welding heads, thereby enabling the welding operation on the winding terminals. Furthermore, fumes are easily generated during the welding process. Therefore, the automated welding system provided in this embodiment may also include a welding fume purification module 27, which can be located near the welding module 24 to purify the fumes generated during the welding process. For example, during the welding of the winding terminals by the welding module 24, the welding fume purification module 27 can purify the fumes generated during the welding process.

[0057] In practical applications, the welding fume purification module 27 may include an air intake, which draws in ambient air to absorb the fumes generated during the welding process, thereby purifying the fumes. Of course, the welding fume purification module 27 may also include an atomizing gas outlet, which sprays atomized water vapor to purify the fumes generated during the welding process.

[0058] It should be noted that after welding the winding terminals in the stator, the winding terminals are prone to being in a high-temperature state, which may cause safety hazards. Therefore, the automated welding system may also include a cooling gas nozzle 26. The cooling gas nozzle 26 can be set near the loading station of the stator rotary exchange table 23 and can be used to spray cooling gas onto the processed stator located at the loading station 231 after rotation. The cooling gas can be, for example, air or nitrogen, so that the processed stator can be cooled down by the cooling gas sprayed by the cooling gas nozzle 26.

[0059] The automated welding system provided in this application includes a high-speed transmission chain 21, a stator support platform 22, a stator rotary exchange platform 23, a welding module 24, and a loading and transport ZY-axis assembly 25. The high-speed transmission chain 21 extends along a first horizontal direction. The stator support platform 22 is disposed on the high-speed transmission chain module 21 and can be used to support the stator. The stator rotary exchange platform 23 is disposed to the side of the high-speed transmission chain module 21 and is provided with a loading station 231 and a processing station 232, which can be switched by rotating the stator rotary exchange platform 23. The welding module 24 is disposed above the processing station of the stator rotary exchange platform 23 and can be used to perform welding operations on the winding terminals of the stator located at the processing station 23. The loading and transport ZY-axis assembly 25 is configured to transport the stator between the high-speed transmission chain module 21 and the stator rotary exchange platform 23. Therefore, this automated welding system can automatically load the stator to be welded onto the loading station 231 of the stator rotary exchange table 23. Then, the stator rotary exchange table 23 rotates to switch to the processing station 232 to weld its winding terminals. Since the stator to be welded is automatically loaded onto the loading station 231 of the stator rotary exchange table 23 and fixed, it is less likely to have loading position deviation errors compared to manual loading. This can reduce problems such as welding position deviation, uneven weld, false weld or missing weld, thereby improving the overall welding performance, operational reliability and efficiency of the stator.

[0060] It should be further explained that the automated welding system may further include a sorting and unloading module 28. This module 28 is located downstream of the transmission of the double-speed transmission chain module 21. The sorting and unloading module 28 can perform qualification and non-qualification checks on the stators transmitted from the double-speed transmission chain module 21 and sort and unload them according to the detection results. For example, the detection results can include qualified and unqualified. The sorting and unloading module 28 can perform qualification and non-qualification checks on the stators transmitted from the double-speed transmission chain module 21 and sort and unqualified stators accordingly. Qualified means that the stator transmitted from the double-speed transmission chain module 21 is qualified after the qualification and non-qualification check; unqualified means that the stator transmitted from the double-speed transmission chain module 21 is unqualified after the qualification and non-qualification check.

[0061] In practical applications, the sorting and unloading module 28 may include a vision inspection module, a qualified product unloading line 281, and an NG unloading line 282 (NG refers to unqualified products). The vision inspection module is used to detect the pass / fail status of stators transported to its station and, based on the inspection results, controls whether the stators are guided to the qualified product unloading line 281 or the NG unloading line 282. The qualified product unloading line 281 can guide qualified products out of the production line, for example, guiding them into the product packaging module; the NG unloading line 282 can guide unqualified products out of the production line, for example, guiding them further into the unqualified product recycling module. Here, "unloading" refers to the product (specifically, the stator in this application) flowing out of the production line.

[0062] In practical applications, the qualified product unloading line 281 can be further equipped with a heat dissipation device 283. The heat dissipation device 283 can be used to dissipate heat from the stator (i.e., qualified product) flowing through the qualified product unloading line 281. The heat dissipation device 283 can include a fan shroud and a cooling fan. The fan shroud can be arranged around the perimeter of the qualified product unloading line 281, and the cooling fan can be installed in the fan shroud. In this way, during the process of conveying qualified products on the qualified product unloading line 281, heat dissipation can be achieved through the fan in the fan shroud arranged along the way, further reducing the temperature of the unloaded qualified products.

[0063] It is important to note that the visual inspection module typically includes an image acquisition device and a detection unit. The image acquisition device is used to acquire images of the stator transmitted from the speed-up transmission chain module 21. In practical applications, the image acquisition device can be, for example, a high-definition camera, and the high-definition camera can usually be set near the end of the speed-up transmission chain module 21. The detection unit can identify the image to detect whether the stator is qualified or not, and thus obtain the detection result.

[0064] To reduce the impact of image acquisition angle deviation on the accuracy of the detection results from the detection unit, the image acquisition device can be configured to acquire images vertically downwards. In this case, the acquired image is an orthographic projection, thus minimizing the influence of acquisition angle deviation. Therefore, the image acquisition device can be positioned near the end of the double-speed transmission chain module 21 to vertically acquire the orthographic projection image of the stator transmitted from the double-speed transmission chain module 21. This allows the detection unit to identify the orthographic projection image to determine whether the stator is qualified and obtain the detection result.

[0065] In this embodiment of the application, the detection unit may identify the orthographic projection image by first identifying and extracting the welding area of ​​the winding terminal in the orthographic projection image, and then extracting the welding features of the welding area. The welding features may include the area difference and average spacing of each weld point, the continuity of the weld, and the color uniformity measurement value of the welding area.

[0066] Specifically, regarding the extraction method of the chromaticity uniformity metric, the welding area can be divided into multiple sub-regions using a grid. Then, for each sub-region, the chromaticity of each pixel in that sub-region can be obtained, and the average chromaticity of that sub-region can be calculated using the chromaticity of each pixel in that sub-region. This yields the average chromaticity of each sub-region. Further calculation of the variance of the average chromaticity of each sub-region is then performed, serving as the chromaticity uniformity metric for the welding area. A larger chromaticity uniformity metric indicates poorer chromaticity uniformity among the sub-regions of the welding area, and a relatively higher probability of welding errors. Conversely, a smaller chromaticity uniformity metric indicates better chromaticity uniformity among the sub-regions of the welding area, and a relatively lower probability of welding errors.

[0067] Regarding the continuity of the weld, it is possible to directly identify whether there is a break in the weld in the welding area. If there is a break in the weld, it indicates that the weld is discontinuous, which suggests that there is a high possibility of a poor weld. If there is no break in the weld, it indicates that the weld is continuous, which suggests that there is a low possibility of a poor weld.

[0068] To determine the area variation and average spacing of weld points within the welding area, the outer contours of each weld point can be extracted first. The projected area of ​​each weld point is then calculated based on these contours. The variance of the projected area is then calculated. A larger variance indicates greater area variation among the weld points, making uneven welding more likely; conversely, a smaller variance indicates less area variation, making uneven welding less likely. For the average spacing of the weld points, the distance between adjacent weld points is calculated based on their outer contours. The average spacing of each weld point is then calculated based on the distance between adjacent weld points. This average spacing typically needs to be within a preset range; otherwise, it may lead to electrical short circuits.

[0069] After obtaining the welding characteristics of the welding area, the stator can be inspected for qualification based on these characteristics. For example, if the weld is discontinuous, the stator is unqualified. If the weld is continuous, the average spacing between each weld point can be further determined. If it is not within the preset range, the stator is unqualified. Conversely, if it is within the preset range, the area difference and color uniformity measurement values ​​can be further determined. If both the area difference and color uniformity measurement values ​​are less than the corresponding preset thresholds, the stator is qualified. Conversely, if either the area difference or color uniformity measurement value is greater than or equal to its corresponding preset threshold, the stator is unqualified. In this way, the qualification of the stator can be detected, and the inspection result can be obtained.

[0070] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0071] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. An automated welding system for stator winding terminals, characterized in that, include: A high-speed transmission chain (21) is provided to extend along the first horizontal direction; The stator support platform (22) is mounted on the double-speed transmission chain module (21) and is used to support the stator; The stator rotary exchange table (23) is located on the side of the double speed transmission chain module (21). The stator rotary exchange table (23) is provided with a loading station and a processing station. The loading station and the processing station are switched by rotating the stator rotary exchange table (23). The welding module (24) is located above the processing station of the stator rotary exchange table (23) and is used to perform welding operations on the winding terminals in the stator located at the processing station (23). The loading and handling ZY axis assembly (25) is configured to transport the stator between the speed-multiplying transmission chain module (21) and the stator rotary exchange table (23).

2. The automated welding system according to claim 1, characterized in that, The loading and handling ZY axis assembly (25) includes a first drive unit (251) capable of reciprocating along a second horizontal direction, and a gripping unit (252) capable of reciprocating along a vertical direction and gripping the stator, wherein the second horizontal direction is perpendicular to the first horizontal direction; and, The gripping part (252) is disposed on the first driving part (251).

3. The automated welding system according to claim 1, characterized in that, The automated welding system also includes a cooling gas nozzle (26), wherein the cooling gas nozzle (26) is located adjacent to the loading station of the stator rotary exchange table (23).

4. The automated welding system according to claim 1, characterized in that, The automated welding system also includes a welding fume purification module (27), which is located next to the welding module (24).

5. The automated welding system according to claim 1, characterized in that, The automated welding system also includes a sorting and unloading module (28), wherein the sorting and unloading module (28) is located downstream of the transmission of the double-speed transmission chain module (21).

6. The automated welding system according to claim 5, characterized in that, The sorting and unloading module (28) includes a vision inspection module, a qualified product unloading line (281) and an NG unloading line (282). The vision inspection module is used to detect whether the stator transmitted to its station is qualified or not, and to control the stator to be introduced into the qualified product unloading line (281) or the NG unloading line (282) according to the detection result.

7. The automated welding system according to claim 6, characterized in that, The qualified product unloading line (281) is equipped with a heat dissipation device (283), and the stator flows through the heat dissipation device (283) to achieve heat dissipation.

8. The automated welding system according to claim 6, characterized in that, The visual inspection module includes an image acquisition device and an inspection unit, wherein: The image acquisition device is located near the end of the double-speed transmission chain module (21) and is used to vertically and downward acquire the orthographic projection image of the stator transmitted from the double-speed transmission chain module (21); The detection unit identifies the orthographic projection image to determine whether the stator is qualified or not, and obtains the detection result.

9. The automated welding system according to claim 1, characterized in that, The loading and handling ZY axis assembly (25) is specifically configured to perform a handling process including the following steps: Move along the second horizontal direction to above the double speed transmission chain module (21) and grab the stator to be welded located on the stator support platform (22); The stator to be welded is carried back along the second horizontal direction and descended along the vertical direction, and the stator to be welded is placed at the loading station of the stator rotary exchange table (23); After the stator terminals are welded at the processing station, the processed stator is picked up from the processing station. The processed stator is carried up vertically and moved along the second horizontal direction to place the processed stator back onto the stator support platform (22) on the double speed transmission chain module (21).

10. The automated welding system according to claim 1, characterized in that, The stator support platform (22) is provided with positioning pins that match the inner contour of the stator; or, The stator support platform (22) is provided with a positioning groove that matches the outer contour of the stator.

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