An automated inspection device for surface defects in motor housings

Abstract

This invention relates to the field of motor inspection and processing, and discloses an automated inspection device for the appearance defects of motor housings. The device includes a mid-section inspection mechanism and a top-view inspection mechanism located on the main frame, which work in conjunction with a traction table for visual inspection of the motor housing's appearance; a side-axis inspection mechanism located on the main frame, which works in conjunction with a traction table for visual inspection of the side of the motor housing's appearance; and a material transfer and output mechanism located on the main frame, which works in conjunction with the side-axis inspection mechanism to transfer inspected qualified and unqualified products. Through the coordination of the material transfer mechanism and the central guide rail mechanism, the entire process from blank input, multi-station inspection and correction, glue injection, appearance inspection, to finished / unqualified product sorting and output is seamlessly connected. The automated assembly line operation completely replaces the traditional manual step-by-step operations of loading, flipping, inspection, and unloading, eliminating manual operation intervals and significantly improving the inspection throughput per unit time.

Description

Technical Field

[0001] This invention relates to the field of motor inspection and processing technology, specifically to an automated inspection device for appearance defects in motor housings. Background Technology

[0002] As a key structural component of a motor, the appearance quality of the motor housing directly affects the overall performance and market competitiveness of the product. Appearance inspection refers to the systematic inspection of the visible features of the motor housing, such as its surface, dimensions, and assembly structure, using manual or automated equipment during the production process to ensure it meets design standards.

[0003] Traditional motor housing appearance inspection processes are highly dependent on manual operation, resulting in low efficiency and high costs. Manual visual inspection is prone to fatigue, making it difficult to achieve 360-degree coverage of curved surfaces, sides, and edges of the housing without blind spots, leading to missed inspection areas. Inspection standards are highly subjective, resulting in poor consistency of results. Key processes such as UV adhesive coating lack online closed-loop monitoring, causing quality problems to be discovered late. The insufficient accuracy of manual flipping and positioning affects the inspection effect. Finished product sorting and stacking storage are inefficient and prone to errors. These shortcomings collectively restrict product quality, production efficiency, and cost control. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automated inspection device for the appearance defects of motor housings. This device solves the systemic problems of low efficiency, high cost, easy omissions, subjective standards, loss of control over key processes, inaccurate positioning, and poor sorting efficiency in traditional manual inspection of motor housings, which seriously restrict product quality and production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automated inspection device for appearance defects in motor housings, comprising:

[0006] Main frame, used to fix the structure of automated inspection equipment for appearance defects of motor housings;

[0007] The central guide rail mechanism is located on the main frame and is used to form a traction structure for linear long-distance transmission;

[0008] The material transfer mechanism is located on the main frame and works with the central guide rail to form a segmented transmission structure.

[0009] The alignment detection mechanism is located on the main frame and is used to detect the motor housing blank fed into the equipment input port;

[0010] The UV adhesive injection mechanism is located on the main frame and works with a side-mounted stand to apply UV adhesive to the surface of the motor housing to be tested.

[0011] The glue application testing mechanism is located on the main frame and works with the side-mounted platform 2 to test the glue application status on the surface of the motor housing.

[0012] The accelerator injection mechanism is located on the main frame and works with the side-mounted stand three to apply accelerator adhesive to the surface of the motor housing to be tested.

[0013] The mid-section inspection mechanism and the top-view inspection mechanism are located on the main frame, and together with the traction stand, they are used for visual inspection of the motor housing.

[0014] The side shaft inspection mechanism is located on the main frame and works with the second traction table to inspect the side appearance of the motor housing.

[0015] The material transfer output mechanism is located on the main frame and works in conjunction with the side shaft detection mechanism to transfer qualified and unqualified products that have completed the inspection.

[0016] The output arrangement mechanism is located on the main frame and works with the horizontal axis rotating traction table to stack the qualified products that have been tested.

[0017] Preferably, there are two sets of central guide rail mechanisms, linearly spliced ​​and arranged at the top center of the main frame. Multiple sets of material transfer mechanisms are arranged parallel to the central guide rail mechanisms and distributed in the input area, splicing area of ​​the central guide rail mechanisms, and output area of ​​the main frame. A deviation correction detection mechanism is located in the top input area of ​​the main frame. A UV adhesive injection mechanism is located on the top of the main frame, adjacent to the deviation correction detection mechanism and parallel to the central guide rail mechanism. A glue injection detection mechanism is located on the top of the main frame, adjacent to the UV adhesive injection mechanism and parallel to the central guide rail mechanism. An accelerator injection mechanism is located on the top of the main frame, adjacent to the glue injection detection mechanism and parallel to the central guide rail mechanism. A mid-section detection mechanism is located on the top of the main frame, adjacent to the accelerator injection mechanism and parallel to the central guide rail mechanism. A top-view detection mechanism is located on the top of the main frame, adjacent to the mid-section detection mechanism and parallel to the central guide rail mechanism. A side-axis detection mechanism is located on the top of the main frame, adjacent to the top-view detection mechanism and parallel to the central guide rail mechanism. A material transfer output mechanism and an output arrangement mechanism are arranged side-by-side in the output area of ​​the main frame.

[0018] Preferably, the central guide rail mechanism includes a central guide rail component, which is fixed to the top of the main frame in a linear splicing manner, and the linear displacement of the rotating slide is controlled by external displacement driving elements.

[0019] The material transfer mechanism includes a transfer guide rail component, which is distributed and fixed on the input area at the top of the main frame, the interlocking area of ​​the central guide rail component, and the output area of ​​the central guide rail mechanism. The transfer guide rail component is composed of a traction guide rod and a stationary guide rod, and the traction guide rod is used externally to drive the displacement of the traction slide. The traction slide can drive the transfer gripper at the output end to rotate through its own rotating cylinder structure.

[0020] Preferably, the correction detection mechanism includes a side-mounted platform, which is fixed in the input area of ​​the main frame. The side-mounted platform is controlled to move up and down by a cylinder lifting structure. A CCD vision camera is provided on one side of the longitudinal axis traction platform, and the CCD vision camera is illuminated from above.

[0021] The UV adhesive injection mechanism includes a second side-mounted platform, which is fixed to the top of the main frame and is connected to the output direction of the first side-mounted platform. A second longitudinal axis traction platform is slidably mounted on the inner side of the second side-mounted platform, and a UV adhesive injection tube with a rotatable longitudinal axis angle is provided at the bottom of the second longitudinal axis traction platform.

[0022] Preferably, the glue injection testing mechanism includes a side-mounted platform three, which is fixed to the top of the main frame and is connected to the output direction of the side-mounted platform two. The side-mounted platform three is controlled to move up and down through a cylinder lifting structure. A CCD vision camera two is provided on the side of the longitudinal axis traction platform three, and the illumination state of the CCD vision camera two is top-down illumination.

[0023] The accelerator injection mechanism includes a traction platform one, which is fixed to the top of the main frame and is connected to the output direction of the side-mounted platform three. A lifting traction platform slides on the inner side of the traction platform one, and an accelerator glue injection pipe that can rotate and change the longitudinal axis angle is provided at the bottom of the lifting traction platform.

[0024] Preferably, the intermediate detection mechanism includes a first vertical frame and a second vertical frame. The first vertical frame is arranged side by side on the top of the main frame and is directly connected to the output direction of the first traction platform. The second vertical frame is fixed on the top of the main frame and is arranged side by side with the first vertical frame. The vertical frame is controlled by a cylinder lifting structure to move the longitudinal axis traction platform four up and down. A CCD vision camera three is arranged on the side of the longitudinal axis traction platform four, and the illumination state of the CCD vision camera three is top-down illumination. The vertical frame is controlled by a cylinder lifting structure to move the longitudinal axis traction platform five up and down. A CCD vision camera four is arranged on the side of the longitudinal axis traction platform five, and the illumination state of the CCD vision camera four is top-down illumination.

[0025] Preferably, the top-view detection mechanism includes a second traction platform, which is fixed to the top of the main frame and is connected to the output direction of the first vertical frame. The inner side of the second traction platform is controlled by a cylinder lifting structure to move the side-attachment frame up and down. A CCD vision camera five is provided on the side of the side-attachment frame, and the illumination state of the CCD vision camera five is top-view illumination.

[0026] Preferably, the side-axis detection mechanism includes a side-push slide, which is disposed opposite to the top of the main frame and is directly connected to the output direction of the second traction frame. A side-axis vision camera is disposed opposite to the side-push slide, and the opposite illumination end of the side-axis vision camera is covered by a light shield.

[0027] Preferably, the material transfer output mechanism includes a horizontal axis rotating traction table and an NG receiving frame. The horizontal axis rotating traction table is fixed to the top of the main frame, and an electrically rotatable extension arm is provided on the top of the horizontal axis rotating traction table. An electrically rotatable derivative rotating traction table is provided at the end of the extension arm, and an electrically rotatable output gripper is provided on the outer end of the derivative rotating traction table. The NG receiving frame is located in the output area on the top of the main frame.

[0028] Preferably, the output arrangement mechanism includes a material support frame, which is embedded and fixed in the output area of ​​the main frame and can accommodate the material support plate of the generator housing. The output side wall of the material support frame is provided with an output pulley, and the hydraulic pusher provided on the bottom surface of the material support frame can control the material support plate to rise.

[0029] This invention provides an automated inspection device for surface defects in motor housings. It offers the following advantages:

[0030] 1. This invention has full-process automation capability: greatly improving inspection efficiency: through the coordination of the material transfer mechanism and the central guide rail mechanism, the equipment seamlessly connects the entire process from blank input, multi-station inspection and correction, glue injection, appearance, to finished product / defective product sorting and output. The automated assembly line operation completely replaces the traditional manual step-by-step operation of feeding, flipping, inspection and unloading, eliminates the interval of manual operation, significantly improves the inspection throughput per unit time, and achieves a qualitative leap in production efficiency.

[0031] 2. This invention possesses a multi-angle, full-coverage, and accurate detection effect for appearance defects: The core advantage of the equipment lies in its construction of a complete multi-view detection system. The flipping function of the rear central guide rail mechanism causes the surface of the outer shell blank to continuously change. Combined with the dual-camera CCD vision camera three and four of the middle detection mechanism, the CCD vision camera five of the top-view detection mechanism, and the side-axis vision camera of the side-axis detection mechanism, it achieves high-definition image acquisition of the top, sides, edges, and complex curved surfaces of the motor shell with almost no blind spots. This multi-angle, redundant visual coverage ensures that appearance defects such as scratches, dents, stains, uneven coatings, and missing materials are effectively detected. The detection accuracy and reliability are far higher than those of single-view detection.

[0032] 3. This invention ensures the quality of key processes such as UV adhesive coating: The equipment integrates a UV adhesive injection mechanism and an adhesive injection detection mechanism to form a closed-loop control. The UV adhesive injection tube can accurately apply UV adhesive, and then the CCD vision camera of the adhesive injection detection mechanism immediately conducts a strict inspection of the position, shape, size and coverage of the adhesive dots. This online real-time detection mechanism can promptly detect and remove defective products, prevent defects from flowing into subsequent processes, and effectively ensure the quality stability of this key process of UV adhesive coating. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of the main structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the mainframe input area structure of the present invention. Figure 1 ;

[0036] Figure 4 This is a schematic diagram of the mainframe input area structure of the present invention. Figure 2 ;

[0037] Figure 5 This is a schematic diagram of the mainframe input area structure of the present invention. Figure 3 ;

[0038] Figure 6 This is a schematic diagram of the structural assembly of the middle area of ​​the main frame of the present invention. Figure 1 ;

[0039] Figure 7 This is a schematic diagram of the structural assembly of the middle area of ​​the main frame of the present invention. Figure 2 ;

[0040] Figure 8 This is a schematic diagram of the mid-section detection mechanism of the present invention;

[0041] Figure 9 This is a top-view schematic diagram of the detection mechanism structure of the present invention;

[0042] Figure 10 This is a schematic diagram of the mainframe output area structure of the present invention. Figure 1 ;

[0043] Figure 11 This is a schematic diagram of the mainframe output area structure of the present invention. Figure 2 ;

[0044] Figure 12 This is a schematic diagram of the output arrangement mechanism of the present invention.

[0045] The components include: 1. Main frame; 2. Central guide rail mechanism; 3. Material transfer mechanism; 4. Correction and detection mechanism; 5. UV adhesive injection mechanism; 6. Adhesive injection detection mechanism; 7. Accelerator injection mechanism; 8. Mid-section detection mechanism; 9. Top-view detection mechanism; 10. Side axis detection mechanism; 11. Transfer output mechanism; 12. Output arrangement mechanism; 21. Central guide rail component; 22. Rotating slide; 31. Transfer guide rail component; 32. Traction slide; 33. Transfer gripper; 41. Side-mounted platform one; 42. Longitudinal axis traction platform one; 43. CCD vision camera one; 51. Side-mounted platform two; 52. Longitudinal axis traction platform two; 53. UV adhesive injection pipe; 61. Side-mounted platform three; 62. Longitudinal axis traction... Platform 3; 63. CCD vision camera 2; 71. Traction platform 1; 72. Lifting traction platform; 73. Accelerator glue injection pipe; 81. Vertical frame 1; 82. Vertical frame 2; 83. Longitudinal axis traction platform 4; 84. CCD vision camera 3; 85. Longitudinal axis traction platform 5; 86. CCD vision camera 4; 91. Traction platform 2; 92. Side bonding frame; 93. CCD vision camera 5; 101. Side push slide; 102. Side axis vision camera; 103. Light shield; 111. Horizontal axis rotating traction platform; 112. Derivative rotating traction platform; 113. Output gripper; 114. NG receiving frame; 121. Material receiving frame; 122. Output pulley; 123. Hydraulic pusher. Detailed Implementation

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see the appendix Figure 1 - Appendix Figure 2 This invention provides an automated inspection device for appearance defects of motor housings, including a main frame 1 for fixing the structure of the automated inspection device for appearance defects of motor housings. The main frame 1 provides a stable foundation support platform for the entire device. Its core function is to bear and fix all other functional mechanisms, ensuring the overall structural rigidity of the device and providing a stable spatial positioning foundation for subsequent precision inspection, material transfer and other operations, avoiding the impact of vibration or deformation on the inspection accuracy and mechanism operation.

[0048] Please see the appendix Figure 1 - Appendix Figure 4The central guide rail mechanism 2 is located on the main frame 1 and is used to form a linear long-distance transmission traction structure. There are two sets of central guide rail mechanisms 2, which are linearly spliced ​​and set at the top center of the main frame 1. The core principle of the central guide rail mechanism 2 is to provide a long-distance, linear and continuous material conveying channel. The central guide rail parts 21 are spliced ​​to form the main conveying path. The displacement drive element precisely controls the rotating slide 22 to move linearly on the guide rail, so as to realize the stable traction and positioning transmission of the motor housing blank between the front and rear sections of the equipment.

[0049] Please see the appendix Figure 3 - Appendix Figure 4 The central guide rail mechanism 2 includes a central guide rail component 21, which is fixed to the top of the main frame 1 in a linear splicing manner. The external rotating slide 22 is linearly displaced by displacement drive elements. The rotating slide 22 serves as the execution component of the central guide rail mechanism 2. Its working principle is to carry the motor housing blank and move precisely along the central guide rail component 21 under the command of the displacement drive elements. More importantly, the rear rotating slide 22 has a flipping function, which can actively change the posture of the blank on it, creating conditions for multi-angle visual inspection.

[0050] Please see the appendix Figure 3 - Appendix Figure 4 The material transfer mechanism 3 is located on the main frame 1 and works with the central guide rail 21 to form a segmented transmission structure. There are multiple sets of material transfer mechanisms 3, which are set parallel to the central guide rail mechanism 2 and are distributed in the input area of ​​the main frame 1, the splicing area of ​​the central guide rail mechanism 2, and the output area of ​​the main frame 1. The material transfer mechanism 3 realizes the segmented transfer of materials in different positions or between mechanisms. The transfer guide rail 31 forms a short-distance movement path. The traction guide rod drives the traction slide 32 to move. The transfer gripper 33 at the end of the traction slide 32 is responsible for grabbing / releasing the blank. Its rotating cylinder structure allows the gripper 33 to rotate and adjust the angle to complete the position handover of the blank in the input, guide rail splicing point and output area.

[0051] Please see the appendix Figure 3 - Appendix Figure 4 The material transfer mechanism 3 includes a transfer guide rail 31, which is distributed and fixed on the top input area of ​​the main frame 1, the splicing area of ​​the central guide rail 21, and the output area of ​​the central guide rail mechanism 2. The transfer guide rail 31 is composed of a traction guide rod and a stationary guide rod, and the traction guide rod externally drives the traction slide 32 to move. The traction slide 32 can drive the transfer gripper 33 at the output end to rotate through its own rotating cylinder structure. The transfer gripper 33 is the execution end of the material transfer mechanism 3. Its working principle is controlled by the rotating cylinder structure on the traction slide 32, which can rotate. This allows the gripper 33 to not only move with the slide 32 after grabbing the blank, but also adjust the angle of the blank to adapt to the position requirements of placing it on or removing it from the central guide rail mechanism 2.

[0052] Please see the appendix Figure 3 - Appendix Figure 4 The correction detection mechanism 4 is located on the main frame 1 and is used to detect the motor housing blank fed into the input port of the equipment. The correction detection mechanism 4 is set in the top input area of ​​the main frame 1. The core principle of the correction detection mechanism 4 is to quickly evaluate the position of the initially input motor housing blank. The side-mounted platform 41 provides support, and the cylinder lifting structure drives the longitudinal axis traction platform 42 to rise and fall, so that the CCD vision camera 43 on it can scan the blank from above. The camera 43 collects images and analyzes whether the blank position is offset and whether there are significant initial defects, providing a basis for subsequent processing.

[0053] Please see the appendix Figure 3 - Appendix Figure 4 The correction and detection mechanism 4 includes a side-mounted platform 41, which is fixed in the input area of ​​the main frame 1. The side-mounted platform 41 is controlled by a cylinder lifting structure to move the longitudinal axis traction platform 42 up and down. A CCD vision camera 43 is installed on the side of the longitudinal axis traction platform 42, and the CCD vision camera 43 is in a top-down illumination state. The CCD vision camera 43 is the core sensing element of the correction and detection mechanism 4. Its working principle is to view the motor housing blank from above under the drive of the longitudinal axis traction platform 42, acquire high-resolution images, and analyze the edge position, center point coordinates and obvious morphological anomalies of the blank in real time through image processing algorithms, and output pose deviation information and initial defect judgment.

[0054] Please see the appendix Figure 3 - Appendix Figure 4 The UV glue injection mechanism 5 is located on the main frame 1 and works with the side platform 41 to apply UV glue to the surface of the motor housing to be tested. The UV glue injection mechanism 5 is set on the top of the main frame 1, adjacent to the correction and detection mechanism 4, and parallel to the central guide rail mechanism 2. The UV glue injection mechanism 5 is responsible for applying UV glue to a specific surface of the motor housing. The side platform 51 is fixed, the longitudinal axis traction platform 52 is movable and positioned, and the UV glue injection tube 53 is installed at the end of the longitudinal axis traction platform 52. The angle can be adjusted and it can be lowered to approach the surface of the blank. Under the command of the control system, a preset amount of UV glue is accurately sprayed out.

[0055] Please see the appendix Figure 3 - Appendix Figure 4The UV glue injection mechanism 5 includes a second side platform 51, which is fixed to the top of the main frame 1 and is connected to the output direction of the first side platform 41. A second longitudinal axis traction platform 52 slides inside the second side platform 51, and a UV glue injection tube 53 with a rotatable longitudinal axis angle is provided at the bottom of the second longitudinal axis traction platform 52. The UV glue injection tube 53 is the execution end of the UV glue injection mechanism 5. Its working principle is to adjust the height and position by controlling the second longitudinal axis traction platform 52, and to rotate to change the spray angle. After reaching the predetermined position and angle, its internal valve body opens and applies a quantitative amount of UV glue to the designated area of ​​the motor housing blank.

[0056] Please see the appendix Figure 4 - Appendix Figure 5 The glue injection detection mechanism 6 is located on the main frame 1 and works with the side-mounted platform 51 to detect the glue application status on the surface of the motor housing. The glue injection detection mechanism 6 is set on the top of the main frame 1, adjacent to the UV glue injection mechanism 5, and parallel to the central guide rail mechanism 2. The glue injection detection mechanism 6 is used to detect the UV glue dotting effect. The side-mounted platform 61 provides support. The cylinder lifting structure drives the longitudinal axis traction platform 62 to rise and fall. The CCD vision camera 63 is installed on the longitudinal axis traction platform 62 to scan the surface of the blank after glue application from above and collect image data of glue dot position, shape, size and coverage for analysis.

[0057] Please see the appendix Figure 4 - Appendix Figure 5 The glue injection detection mechanism 6 includes a side-mounted platform 3 61, which is fixed to the top of the main frame 1 and is connected to the output direction of the side-mounted platform 2 51. The side-mounted platform 3 61 is controlled by a cylinder lifting structure to move the longitudinal axis traction platform 3 62 up and down. A CCD vision camera 2 63 is installed on the side of the longitudinal axis traction platform 3 62. The CCD vision camera 2 63 is in a top-down illumination state. The CCD vision camera 2 63 is the detection core of the glue injection detection mechanism 6. Its working principle is to take a top-down image of the surface of the motor housing after UV glue is applied. Through image analysis, it is determined whether the coordinates of the glue dots are accurate, whether the shape is regular, whether the size meets the standard, and whether there are any omissions or excesses. The results are then fed back to the control system.

[0058] Please see the appendix Figure 4 - Appendix Figure 5The accelerator injection mechanism 7 is located on the main frame 1 and works with the side-mounted platform 3 61 to apply accelerator adhesive to the surface of the motor housing to be tested. The accelerator injection mechanism 7 is set at the top of the main frame 1, adjacent to the adhesive injection detection mechanism 6, and parallel to the central guide rail mechanism 2. The accelerator injection mechanism 7 is responsible for applying accelerator to the UV adhesive surface. The traction platform 1 71 is a fixed mechanism, the lifting traction platform 72 is movable and positioned, and the accelerator adhesive injection tube 73 is installed at the end of the lifting traction platform 72. The angle can be adjusted and it can be lowered to approach the surface of the blank. Under the command of the control system, a preset amount of accelerator adhesive is accurately sprayed to accelerate the curing of the UV adhesive.

[0059] Please see the appendix Figure 4 - Appendix Figure 5 The accelerator injection mechanism 7 includes a traction platform 71, which is fixed to the top of the main frame 1 and is connected to the output direction of the side-mounted platform 61. A lifting traction platform 72 slides inside the traction platform 71, and an accelerator glue injection pipe 73 with a rotatable longitudinal axis angle is provided at the bottom of the lifting traction platform 72. The accelerator glue injection pipe 73 is the execution end of the accelerator injection mechanism 7. Its working principle is to adjust the height and position by being controlled by the lifting traction platform 72, and to rotate to change the spray angle. After reaching the predetermined position and angle, its internal valve body opens and quantitatively applies accelerator glue to the specific area that has been coated with UV glue.

[0060] Please see the appendix Figure 6 - Appendix Figure 8 The intermediate inspection mechanism 8 and the top-view inspection mechanism 9 are located on the main frame 1. Together with the traction table 71, they are used for the appearance inspection of the motor housing. The intermediate inspection mechanism 8 is set on the top of the main frame 1, adjacent to the accelerator injection mechanism 7, and parallel to the central guide rail mechanism 2. The intermediate inspection mechanism 8 performs multi-angle appearance scanning on the motor housing in the flipped state. The vertical frame 81 and the vertical frame 82 provide support in parallel. Their respective cylinder lifting structures drive the longitudinal axis traction table 83 and the longitudinal axis traction table 85 to rise and fall. The CCD vision camera 84 and the CCD vision camera 86 on them take images of the housing surface from different angles to detect appearance defects.

[0061] Please see the appendix Figure 7 - Appendix Figure 8The intermediate inspection mechanism 8 includes a first vertical frame 81 and a second vertical frame 82. The first vertical frame 81 is arranged side by side on the top of the main frame 1 and is directly connected to the output direction of the first traction table 71. The second vertical frame 82 is fixed to the top of the main frame 1 and is arranged side by side with the first vertical frame 81. The vertical axis traction table 83 is controlled to move up and down by a cylinder lifting structure inside the first vertical frame 81. A CCD vision camera 84 is arranged on the side of the fourth vertical axis traction table 83, and the illumination state of the third CCD vision camera 84 is top-down illumination. The second vertical frame 82 is controlled to move up and down by a cylinder lifting structure inside the second vertical frame 82. The vertical displacement of the longitudinal axis traction stage 85 is controlled, and a CCD vision camera 86 is installed on the side of the longitudinal axis traction stage 85. The illumination state of the CCD vision camera 86 is top-down illumination. The CCD vision camera 84 and the CCD vision camera 86 are the vision perception units of the middle section detection mechanism 8. They are installed on the longitudinal axis traction stage 83 and the longitudinal axis traction stage 85, respectively. The working principle is to take a top-down picture of the surface of the flipped motor housing. Through image processing, the surface defects such as scratches, pits, stains, and uneven coatings are detected at different angles.

[0062] Please see the appendix Figure 7 -Appendix Figure 9 The top-view inspection mechanism 9 is located on the main frame 1. The top-view inspection mechanism 9 is set at the top of the main frame 1, adjacent to the middle section inspection mechanism 8, and parallel to the central guide rail mechanism 2. The top-view inspection mechanism 9 provides supplementary top-view appearance inspection. The traction table 2 91 is fixed by the cylinder lifting structure, which drives the side-mounted frame 92 to rise and fall. The CCD vision camera 5 93 is installed on the side-mounted frame 92, which scans the top surface area of ​​the motor housing from above and collects images for defect analysis.

[0063] Please see the appendix Figure 8 -Appendix Figure 9 The top-view inspection mechanism 9 includes a second traction platform 91, which is fixed to the top of the main frame 1 and is connected to the output direction of the first vertical frame 81. The inner side of the second traction platform 91 is controlled by a cylinder lifting structure to move the side-mounted frame 92 up and down. A CCD vision camera 93 is installed on the side of the side-mounted frame 92, and the illumination state of the CCD vision camera 93 is top-view illumination. The CCD vision camera 93 is the core of the top-view inspection mechanism 9. Its working principle is to look down at a specific surface of the motor housing, such as the top, under the drive of the side-mounted frame 92. It acquires high-resolution images and analyzes the area through algorithms to see if there are any appearance defects that the aforementioned camera may have missed or that need to be checked.

[0064] Please see the appendix Figure 10 -Appendix Figure 11The side-axis inspection mechanism 10 is located on the main frame 1 and works with the traction table 2 91 to inspect the side appearance of the motor housing. The side-axis inspection mechanism 10 is set on the top of the main frame 1, adjacent to the top-view inspection mechanism 9, and parallel to the central guide rail mechanism 2. The side-axis inspection mechanism 10 focuses on the defect detection of the side and edge of the motor housing. The side-push slide 101 can be adjusted in position, and the side-axis vision camera 102 on it takes pictures of the passing blank from the side angle. The light shield 103 covers the camera 102 and the shooting area to reduce ambient light interference and ensure the clarity of the side image.

[0065] Please see the appendix Figure 10 - Appendix Figure 11 The side-axis detection mechanism 10 includes a side-push slide 101, which is disposed opposite to the top of the main frame 1 and is connected to the output direction of the traction frame 91. A side-axis vision camera 102 is disposed opposite to the side-push slide 101, and the opposite illumination end of the side-axis vision camera 102 is covered by a light shield 103. The side-axis vision camera 102 is the detection element of the side-axis detection mechanism 10. Its working principle is to take pictures at a certain angle to the side of the motor housing. A stable lighting environment is created by the light shield 103 to collect images of the side wall, edges, corners and other areas of the housing, and detect edge defects such as scratches, deformation and missing materials on the side.

[0066] Please see the appendix Figure 10 - Appendix Figure 11 The transfer output mechanism 11 is located on the main frame 1 and works with the side shaft detection mechanism 10 to transfer qualified and unqualified products after inspection. The transfer output mechanism 11 and the output arrangement mechanism 12 are arranged side by side in the output area of ​​the main frame 1. The transfer output mechanism 11 is responsible for transferring the finished / unqualified motor housing from the working area to the designated collection point. The horizontal axis rotary traction table 111 provides the main motion, and its extension arm end is connected to the derivative rotary traction table 112. The output gripper 113 is installed on the derivative rotary traction table 112 and can move with multiple degrees of freedom to grab the housing. The NG collection box 114 is used to place unqualified products.

[0067] Please see the appendix Figure 10 - Appendix Figure 11The material transfer output mechanism 11 includes a horizontal axis rotating traction table 111 and an NG receiving frame 114. The horizontal axis rotating traction table 111 is fixed on the top of the main frame 1, and an electrically rotatable extension arm is provided on the top of the horizontal axis rotating traction table 111. An electrically rotatable derivative rotating traction table 112 is provided at the end of the extension arm, and an electrically rotatable output gripper 113 is provided at the outer end of the derivative rotating traction table 112. The NG receiving frame 114 is located in the output area on the top of the main frame 1. The output gripper 113 is the gripping end of the material transfer output mechanism 11. Its working principle is controlled by the derivative rotating traction table 112. It can be angled to adapt to the gripping posture. It grips the inspected motor housing placed by the material transfer mechanism 3, and according to the judgment result of qualified / unqualified, under the coordinated movement of the horizontal axis rotating traction table 111 and the derivative rotating traction table 112, it moves the housing to the top of the receiving frame 121 or the NG receiving frame 114 and releases it.

[0068] Please see the appendix Figure 11 - Appendix Figure 12 The output arrangement mechanism 12 is located on the main frame 1 and works with the horizontal axis rotating traction table 111 to stack qualified products that have completed the output inspection. The output arrangement mechanism 12 is used to store and output qualified motor housing products in an orderly manner. The material support frame 121 is used to stack multiple layers of material support plates. The hydraulic pusher 123 is located at the bottom of the frame and can lift the material support plate. When a layer of material support plate is full of qualified products, the hydraulic pusher 123 lifts it up to make room for the next layer of material support plate to continue stacking. The output pulley 122 can move the full material support plate horizontally out when needed.

[0069] Please see the appendix Figure 11 - Appendix Figure 12 The output arrangement mechanism 12 includes a material support frame 121, which is embedded and fixed in the output area of ​​the main frame 1. The material support frame 121 can be used to stack the motor housing material support plate inside. At the same time, the output side wall of the material support frame 121 is provided with an output pulley 122. The hydraulic pusher 123 provided on the bottom surface of the material support frame 121 can control the material support plate to rise. The hydraulic pusher 123 is the key component for the output arrangement mechanism 12 to achieve layered stacking. Its working principle is hydraulic drive, which vertically lifts the material support plate inside the material support frame 121. When a layer of material support plate is filled with qualified motor housing, the hydraulic pusher 123 is activated, lifting the entire plate layer together with the housing upward by a preset height, so that the new empty material support plate below reaches the loading position, realizing continuous automatic stacking.

[0070] Based on the above technical solution, embodiments of the present invention also provide the working principle of an automated inspection device for appearance defects in motor housings, including the following:

[0071] After the equipment is started, the motor housing blank to be inspected is sent into the input area of ​​the main frame 1. A set of material transfer mechanisms 3 located in the input area starts working, and its transfer grippers 33 actuate to hold the motor housing blank. The traction slide 32 of the material transfer mechanism 3 moves under the action of the guide rod, moving the held motor housing blank to below the detection position of the correction detection mechanism 4. The longitudinal traction table 42 of the correction detection mechanism 4 is lowered under the drive of the cylinder lifting structure, so that the CCD vision camera 43 on it approaches the surface of the motor housing blank. The CCD vision camera 43 performs a top-down visual scan inspection of the motor housing blank below, the main purpose of which is to identify the initial position of the blank and whether there is serious misalignment or morphological defects for correction. After the correction inspection is completed... The longitudinal traction table 42 rises and resets, and the material transfer mechanism 3 in the input area operates again. Its traction slide 32 moves, and the transfer gripper 33 places the motor housing blank onto the center guide rail 21 of the front center guide rail mechanism 2. The displacement drive element of the front center guide rail mechanism 2 is activated, driving the rotating slide 22 to move linearly along the center guide rail 21. The rotating slide 22 carries the motor housing blank and pulls it forward. The motor housing blank is pulled by the center guide rail mechanism 2 to the working position of the UV glue injection mechanism 5. The longitudinal traction table 52 of the UV glue injection mechanism 5 moves above the motor housing blank, and the UV glue injection pipe 53 rotates and descends according to a preset angle. The UV glue injection pipe 53 applies UV glue to a specific surface of the motor housing blank. After the dispensing operation is completed, the UV adhesive injection tube 53 rises and resets. The central guide rail mechanism 2 continues to pull the motor housing blank forward to below the detection position of the dispensing detection mechanism 6. The longitudinal axis traction platform 62 of the dispensing detection mechanism 6 descends under the drive of the cylinder lifting structure. The CCD vision camera 63 performs a top-down visual scan detection of the UV adhesive dispensing status on the surface of the motor housing blank to determine whether the dispensing position, shape, and coverage meet the requirements. After the dispensing detection is completed, the longitudinal axis traction platform 62 rises and resets. The central guide rail mechanism 2 continues to pull the motor housing blank forward to the working position of the accelerator injection mechanism 7. The lifting traction platform 72 of the accelerator injection mechanism 7 moves above the motor housing blank. The accelerator adhesive injection tube 73 moves according to the preset angle. The accelerator injection tube 73 rotates and descends, applying accelerator adhesive to the surface or specific area of ​​the motor housing blank coated with UV adhesive to accelerate UV adhesive curing. After the accelerator is applied, the accelerator injection tube 73 rises and resets, and the central guide rail mechanism 2 continues to pull the motor housing blank forward. When the motor housing blank moves to the middle splicing area of ​​the central guide rail mechanism 2, the material transfer mechanism 3 in that area is activated, its traction slide 32 moves, and the transfer jaws 33 clamp the motor housing blank. The transfer jaws 33 of the material transfer mechanism 3 are angled by their own rotating cylinder structure, and then the motor housing blank is transferred and placed on the central guide rail 21 of the rear central guide rail mechanism 2. The displacement drive element of the rear central guide rail mechanism 2 is activated.The rotating slide 22 carries the motor housing blank for continuous linear displacement. Simultaneously, the rear center guide rail mechanism 2 has a flipping control function. During traction, the rear center guide rail mechanism 2 controls the rotating slide 22 to perform flipping movements at specific angles or continuously, thereby causing the inspected surface of the motor housing blank placed on it to continuously change. In the flipped state, the motor housing blank is pulled through the inspection area of ​​the middle inspection mechanism 8. The longitudinal axis traction table 83 in the vertical frame 81 of the middle inspection mechanism 8 descends under the drive of the cylinder lifting structure. The CCD vision camera 84 performs a top-down visual scan inspection of the surface of the motor housing blank passing below. Simultaneously or successively, the longitudinal axis traction table in the vertical frame 82... Driven by the cylinder lifting structure, CCD vision camera 85 descends, while CCD vision camera 86 performs a top-down visual scan of the surface of the motor housing blank passing below. The two cameras cover different areas or provide redundant detection. After the detection is completed, the longitudinal axis traction stage 83 and longitudinal axis traction stage 85 rise and reset. The central guide rail mechanism 2 continues to pull and rotate the motor housing blank forward to the detection position of the top-down detection mechanism 9. The side frame 92 of the top-down detection mechanism 9 descends under the drive of the cylinder lifting structure, bringing CCD vision camera 93 close to the surface of the motor housing blank. CCD vision camera 93 performs a top-down visual scan of the surface of the motor housing blank passing below. This detection is for a specific angle or supplements the previous sequence. After the top-view inspection is completed, the side-mounted frame 92 rises and resets. The central guide rail mechanism 2 continues to pull and flip the motor housing blank forward to the inspection area of ​​the side-axis inspection mechanism 10. The side-push slide 101 of the side-axis inspection mechanism 10 adjusts its position, and the side-axis vision camera 102 on it is activated. The ambient light interference is reduced by the cover 103. The side-axis vision camera 102 performs visual scanning inspection on the sides, edges, or specific facades of the passing motor housing blank. After comprehensive visual inspection by the middle section inspection mechanism 8, the top-view inspection mechanism 9, and the side-axis inspection mechanism 10, including multi-angle top-view and side-view inspections, the system comprehensively judges whether there are appearance defects in the motor housing, such as scratches, dents, stains, and uneven coating. After inspection, the motor housing, now determined to be either a finished product or a defective product, is pulled to the output area by the rear center guide rail mechanism 2. The material transfer mechanism 3 in the output area is activated, its traction slide 32 moves, and the transfer gripper 33 clamps the motor housing. The material transfer mechanism 3 moves the clamped motor housing into the operable range of the transfer output mechanism 11. The horizontal axis rotation traction table 111 of the transfer output mechanism 11 is activated, controlling its extension arm to rotate. The derivative rotation traction table 112 at the end of the extension arm is activated, adjusting the position and angle of the output gripper 113. The output gripper 113 then clamps the motor housing placed by the material transfer mechanism 3. Based on the judgment result of the vision inspection system:

[0072] If the product is a qualified finished product: the horizontal axis rotating traction table 111 and the derivative rotating traction table 112 of the transfer output mechanism 11 move in coordination to move the qualified motor housing held by the output gripper 113 to the top of the receiving frame 121 of the output arrangement mechanism 12. If the product is a defective product: the horizontal axis rotating traction table 111 and the derivative rotating traction table 112 of the transfer output mechanism 11 move in coordination to move the defective motor housing held by the output gripper 113 to the top of the NG receiving frame 114. The output gripper 113 is released, and the motor housing is placed into the receiving frame 121 or the NG receiving frame 114. For qualified products placed into the receiving frame 121:

[0073] Motor housing support plates are stacked inside the support frame 121. When the number or height of qualified products stacked on the support plate reaches a certain level, the hydraulic pusher 123 on the bottom of the support frame 121 is activated, lifting the support plate to a higher position. Subsequent qualified products will be stacked on the new support plate. When the top support plate is full or needs to be output, the output pulley 122 is activated, horizontally conveying the support plate full of qualified products out of the support frame 121. The NG receiving frame 114 is used to collect unqualified products. The transfer output mechanism 11 and the output arrangement mechanism 12 work continuously to classify and store the inspected motor housings according to whether they are qualified or unqualified. The equipment runs in a cycle according to this process to realize the automated detection and sorting of appearance defects of motor housings.

[0074] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated inspection device for appearance defects in motor housings, characterized in that, include: The main frame (1) is used to fix the structure of the automated inspection equipment for appearance defects of motor housing; The central guide rail mechanism (2) is located on the main frame (1) and is used to form a traction structure for linear long-distance transmission. The central guide rail mechanism (2) includes a central guide rail component (21). The material transfer mechanism (3) is located on the main frame (1) and works with the central guide rail (21) to form a segmented transmission structure; The correction detection mechanism (4) is located on the main frame (1) and is used to detect the motor housing blank sent into the input port of the equipment. The correction detection mechanism (4) includes a side-mounted platform (41). The UV glue injection mechanism (5) is located on the main frame (1) and works with the side stand one (41) to apply UV glue to the surface of the motor housing to be tested. The UV glue injection mechanism (5) includes the side stand two (51). The glue injection testing mechanism (6) is located on the main frame (1) and works with the second side platform (51) to test the glue application status on the surface of the motor housing. The glue injection testing mechanism (6) includes the third side platform (61). The accelerator injection mechanism (7) is located on the main frame (1) and works with the side-mounted platform three (61) to apply accelerator glue to the surface of the motor housing to be tested. The accelerator injection mechanism (7) includes a traction platform one (71). The mid-section inspection mechanism (8) and the top-view inspection mechanism (9) are located on the main frame (1) and are used in conjunction with the first traction platform (71) for the appearance inspection of the motor housing. The top-view inspection mechanism (9) includes the second traction platform (91). The side shaft detection mechanism (10) is located on the main frame (1) and works with the second traction table (91) to take pictures and detect the side appearance of the motor housing. The side shaft detection mechanism (10) includes a side push slide (101). The material transfer output mechanism (11) is located on the main frame (1) and works with the side shaft detection mechanism (10) to transfer the qualified and unqualified products after inspection. The material transfer output mechanism (11) includes a horizontal axis rotating traction table (111) and an NG receiving frame (114). The output arrangement mechanism (12) is located on the main frame (1) and works with the horizontal axis rotating traction table (111) to stack the qualified products after output testing; The central guide rail mechanism (2) consists of two sets, linearly spliced ​​together at the top center of the main frame (1). The material transfer mechanism (3) consists of multiple sets, parallel to the central guide rail mechanism (2), and distributed in the input area of ​​the main frame (1), the splicing area of ​​the central guide rail mechanism (2), and the output area of ​​the main frame (1). The deviation correction detection mechanism (4) is located in the top input area of ​​the main frame (1). The UV glue injection mechanism (5) is located at the top of the main frame (1), adjacent to the deviation correction detection mechanism (4), and parallel to the central guide rail mechanism (2). The glue injection detection mechanism (6) is located at the top of the main frame (1), adjacent to the UV glue injection mechanism (5), and parallel to the central guide rail mechanism (2). Accelerator The injection mechanism (7) is located on the top of the main frame (1), adjacent to the glue injection detection mechanism (6) and parallel to the central guide rail mechanism (2). The middle section detection mechanism (8) is located on the top of the main frame (1), adjacent to the accelerator injection mechanism (7) and parallel to the central guide rail mechanism (2). The top view detection mechanism (9) is located on the top of the main frame (1), adjacent to the middle section detection mechanism (8) and parallel to the central guide rail mechanism (2). The side shaft detection mechanism (10) is located on the top of the main frame (1), adjacent to the top view detection mechanism (9) and parallel to the central guide rail mechanism (2). The material transfer output mechanism (11) and the output arrangement mechanism (12) are arranged side by side in the output area of ​​the main frame (1). The second side stand (51) is fixed on the top of the main frame (1) and is closely connected to the output direction of the first side stand (41). The second side stand (51) has a longitudinal axis traction platform (52) sliding inside, and the bottom of the second side stand (52) is provided with a UV glue injection tube (53) that can rotate and change the longitudinal axis angle. The first traction platform (71) is fixed on the top of the main frame (1) and is connected to the output direction of the third side platform (61). The first traction platform (71) has a lifting traction platform (72) sliding inside, and the bottom of the lifting traction platform (72) is provided with an accelerator glue injection pipe (73) that can rotate and change the longitudinal axis angle. The mid-section detection mechanism (8) includes a vertical frame one (81) and a vertical frame two (82). The vertical frame one (81) is arranged side by side on the top of the main frame (1) and is connected to the output direction of the traction platform one (71). The vertical frame two (82) is fixed on the top of the main frame (1) and is arranged side by side with the vertical frame one (81). The vertical frame one (81) controls the vertical displacement of the longitudinal axis traction platform four (83) through a cylinder lifting structure. The longitudinal axis traction platform four (83) is equipped with a CCD vision camera three (84) on its side, and the CCD vision camera three (84) is in the state of top-down illumination. The vertical frame two (82) controls the vertical displacement of the longitudinal axis traction platform five (85) through a cylinder lifting structure. The longitudinal axis traction platform five (85) is equipped with a CCD vision camera four (86) on its side, and the CCD vision camera four (86) is in the state of top-down illumination.

2. The automated inspection device for appearance defects of a motor housing according to claim 1, characterized in that, The central guide rail (21) is fixed to the top of the main frame (1) in a linear splicing manner, and the external displacement drive element controls the linear displacement of the rotating slide (22); The material transfer mechanism (3) includes a transfer guide rail (31), which is distributed and fixed on the top input area of ​​the main frame (1), the splicing area of ​​the central guide rail (21), and the output area of ​​the central guide rail mechanism (2). The transfer guide rail (31) is composed of a traction guide rod and a stationary guide rod, and the traction guide rod is used to drive the traction slide (32) to move. The traction slide (32) can drive the transfer gripper (33) at the output end to rotate through its own rotating cylinder structure.

3. The automated inspection device for appearance defects of a motor housing according to claim 1, characterized in that, The side-mounted platform (41) is fixed in the input area of ​​the main frame (1), and the vertical displacement of the longitudinal axis traction platform (42) is controlled by the cylinder lifting structure inside the side-mounted platform (41). A CCD vision camera (43) is provided on the side of the longitudinal axis traction platform (42), and the illumination state of the CCD vision camera (43) is top-down illumination.

4. The automated inspection device for appearance defects of motor housing according to claim 1, characterized in that, The side-mounted platform three (61) is fixed on the top of the main frame (1) and is connected to the output direction of the side-mounted platform two (51). The vertical displacement of the longitudinal axis traction platform three (62) is controlled by the cylinder lifting structure inside the side of the side-mounted platform three (61). The side of the longitudinal axis traction platform three (62) is equipped with a CCD vision camera two (63), and the illumination state of the CCD vision camera two (63) is top-down illumination.

5. The automated inspection device for appearance defects of a motor housing according to claim 1, characterized in that, The second traction platform (91) is fixed on the top of the main frame (1) and is connected to the output direction of the first vertical frame (81). The inner side of the second traction platform (91) controls the vertical displacement of the side-attachment frame (92) through the cylinder lifting structure. The side of the side-attachment frame (92) is equipped with a CCD vision camera (93), and the illumination state of the CCD vision camera (93) is top-down illumination.

6. The automated inspection device for appearance defects of a motor housing according to claim 1, characterized in that, The side push slide (101) is positioned opposite to the top of the main frame (1) and is connected to the output direction of the second traction frame (91). A side axis vision camera (102) is positioned opposite to the side push slide (101), and the opposite illumination end of the side axis vision camera (102) is covered by a light shield (103).

7. The automated inspection device for appearance defects of a motor housing according to claim 1, characterized in that, The horizontal axis rotating traction table (111) is fixed on the top of the main frame (1), and the top of the horizontal axis rotating traction table (111) is provided with an electrically rotatable extension arm, and the end of the extension arm is provided with an electrically rotatable derivative rotating traction table (112), and the outer end of the derivative rotating traction table (112) is provided with an electrically rotatable output gripper (113), and the NG receiving frame (114) is provided in the output area on the top of the main frame (1).

8. The automated inspection device for appearance defects of a motor housing according to claim 1, characterized in that, The output arrangement mechanism (12) includes a material support frame (121), which is embedded and fixed in the output area of ​​the main frame (1) and can be used to stack the material support plate of the generator shell. Meanwhile, the output side wall of the material support frame (121) is provided with an output pulley (122), and the hydraulic pusher (123) provided on the bottom surface of the material support frame (121) can control the material support plate to rise.

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