A cover plate assembly full-dimension AOI detection device and detection method

Abstract

The application discloses a kind of cover plate assembly full-dimension AOI detection device, including rack, the top of rack both sides are fixedly connected with fixed frame, cover plate assembly full-dimension AOI detection device further includes material moving assembly, material moving assembly sets the top of rack, the below of fixed frame.The present application relates to heat dissipation shielding cover plate production equipment technical field, by the cooperation between rack, material moving assembly, visual detection component, material transfer component and fixed frame, so that cover plate assembly in image acquisition process, according to the set path and point position carries out multi-axis position adjustment, reduces the defect missed detection probability caused by the limitation of view angle, and according to the characteristics of different material layers of cover plate assembly and the structural features of detection point position Provide adaptive illumination, reduce the interference caused by the difference of different material layers reflection and the surface structure characteristics of cover plate to defect extraction, reduce the false positive rate and the false negative rate in the detection process of multilayer composite heat dissipation shielding cover plate.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation shielding cover production equipment technology, specifically to a full-dimensional AOI inspection device and inspection method for cover assembly. Background Technology

[0002] Multi-layer composite heat dissipation shielding covers are industrial composite components that combine heat dissipation and electromagnetic shielding functions. They employ a multi-layered, heterogeneous material stacked composite structure, achieving both efficient heat conduction and electromagnetic signal blocking. Composed of stacked functional layers, commonly a combination of a metal layer, a thermally conductive interface layer, and a shielding layer, they are firmly bonded through intermetallic compounds, balancing low density and high strength. They can rapidly dissipate heat through the high thermal conductivity layer while blocking electromagnetic signal leakage through the metal shielding layer, enhancing air convection heat dissipation without significantly reducing shielding effectiveness.

[0003] When performing AOI inspection on the multi-layer composite heat dissipation shielding cover, a fixed AOI inspection camera is used to collect appearance defects section by section during the material conveying process.

[0004] In existing technologies, when multi-layer composite heat dissipation shielding covers are inspected in multiple segments using a fixed AOI inspection camera during the production process, the cover components are composed of multiple layers of heterogeneous materials. The light reflection characteristics of different materials vary greatly. Due to the limited viewing angle of the inspection camera, it is impossible to accurately cover and collect three-dimensional structural defects such as side steps, interlayer misalignment, and end face burrs. At the same time, the intensity difference of reflected light from different material layers can interfere with the detection algorithm's identification of defect features, easily misjudging the material's own reflection differences as defects. This results in a high false alarm rate and a high false negative rate, making it difficult to meet the inspection requirements of high-precision mass production. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a full-dimensional AOI inspection device for cover plate components. This solves the problem that in existing technologies, multi-layer composite heat dissipation shielding covers cannot achieve accurate coverage and acquisition of three-dimensional structural defects such as side steps, interlayer misalignment, and end face burrs. At the same time, the intensity difference of reflected light from different material layers can interfere with the detection algorithm's identification of defect features, resulting in high false alarm and false negative rates, making it difficult to meet the inspection requirements of high-precision mass production.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a full-dimensional AOI inspection device for cover plate components, comprising a frame, with fixed frames fixedly connected to both sides of the top of the frame; the full-dimensional AOI inspection device for cover plate components further comprising a material moving component, which is disposed at the top of the frame and below the fixed frames; a vision inspection component is disposed at the top of the fixed frames; and a material transfer component is disposed on one side of the top of the frame; wherein, the material moving component carries the cover plate component and moves it along a preset path in multiple axes, and cooperates with the vision inspection component to perform full-dimensional scanning and imaging of different positions on the outer surface of the cover plate component. After image acquisition is completed, the material transfer component moves the inspected cover plate component out of the inspection station.

[0007] Preferably, the material moving assembly includes a first linear motor, of which two are provided and fixedly connected to the top of the frame and the bottom of the fixed frame; a second linear motor is fixedly connected to the top side of the output end of the first linear motor; a first slide rail is fixedly connected to the top side of the output end of the first linear motor away from the second linear motor; and a carrier assembly is disposed on top of the second linear motor; wherein the first linear motor and the second linear motor can respectively drive the carrier assembly to move along two mutually perpendicular horizontal directions, thereby driving the cover plate assembly to adjust its position on the horizontal plane during the detection process.

[0008] Preferably, the carrier assembly includes a base, which is fixedly connected to the output end of the second linear motor and slidably connected to the outer wall of the first slide rail; an illumination backplate is fixedly connected to the top of the base; a vacuum suction plate is fixedly connected to the top of the base and disposed on the top of the illumination backplate; and a material placement slot is disposed on the top of the vacuum suction plate. After the cover plate assembly is placed in the material placement slot, the vacuum suction plate uses vacuum negative pressure to adsorb and fix the cover plate assembly, and the illumination backplate provides supplementary lighting from the back of the cover plate assembly.

[0009] Preferably, the visual inspection component includes a fixed plate fixedly connected to the top of a mounting frame; a CCD camera fixedly connected to the top of the fixed plate; a horizontal plate fixedly connected to the mounting frame and located below the fixed plate; a coaxial light source fixedly connected to the top of the horizontal plate and positioned opposite to the CCD camera; a light shield fixedly connected to the bottom of the fixed plate, with its bottom end fixedly connected to the coaxial light source; and multiple strip light sources fixedly connected to the bottom of the horizontal plate and located outside the coaxial light source. The coaxial light source and the strip light sources provide illumination at different angles for image acquisition by the cover plate component, cooperating with the CCD camera to capture images from above the cover plate component.

[0010] Preferably, the material transfer component includes a gripping robot, which is fixedly connected to the top of the frame on one side of two fixed frames; a suction cup frame is fixedly connected to the output end of the gripping robot; multiple vacuum suction cups are provided and fixedly connected to the bottom of the suction cup frame at equal intervals; and a laser rangefinder is fixedly connected to the top of the suction cup frame. The vacuum suction cups grip the cover plate component by vacuum adsorption. During the gripping process, the laser rangefinder detects the position of the cover plate component and assists the gripping robot in adjusting the gripping height. After the gripping is completed, the gripping robot moves the cover plate component to the preset unloading area for unloading.

[0011] Preferably, a qualified product discharge assembly is provided on one side of the top of the frame. The qualified product discharge assembly includes a track seat, which is fixedly connected to one side of the top of the frame; a second slide rail is fixedly connected to both sides of the top of the track seat; a ball screw is rotatably connected to the inside of the track seat; a movable seat is located above the track seat, slidably connected to the outer wall of the second slide rail, and threadedly connected to the outer wall of the ball screw; two sets of limiting plates are provided, which are fixedly connected to both sides of the top of the movable seat; through-beam photoelectric sensors are located at the top of the outer walls of the two limiting plates on the same side; and an upward push assembly is located on the top of the movable seat. The material transfer assembly places qualified cover plate assemblies on the top of the movable seat for stacking. When the through-beam photoelectric sensor detects that the stacked cover plate assemblies have reached a preset number, the ball screw drives the movable seat to move along the second slide rail to the unloading position, making it convenient for the operator to remove the stacked qualified cover plate assemblies.

[0012] Preferably, the pushing component includes a tray, which is disposed above the movable seat and is connected to the limiting plate; a servo cylinder is fixedly connected to the top two sides of the movable seat, and its output end is fixedly connected to the tray; wherein, after the movable seat moves to the unloading position, the servo cylinder drives the tray to extend upward, lifting the stacked cover plate components upward for easy removal.

[0013] Preferably, a defective product inspection component is installed on the top of the frame, on the side of the gripping robot away from the track seat. The defective product inspection component includes a fixed base, which is fixedly connected to the top of the frame on the side of the gripping robot away from the track seat; a third slide rail is fixedly connected to both sides of the top of the fixed base; a support plate is slidably connected to the outer wall of the third slide rail; multiple limit blocks are provided and distributed on the top of the support plate; and a handle is fixedly connected to the outer wall of the support plate on the side away from the gripping robot. The material transfer component grips the cover plate component that is determined to be unqualified and places it on the support plate, which is limited by multiple limit blocks. The operator pulls out the support plate through the handle to manually inspect the defective product. Beneficial effects

[0014] This invention provides a full-dimensional AOI inspection device for cover plate assemblies. It offers the following advantages: Through the coordination of the frame, material movement component, vision inspection component, material transfer component, and fixing frame, this full-dimensional AOI inspection device enables the cover plate assembly to perform multi-axis position adjustments according to a set path and points during image acquisition, automatically completing image acquisition of all areas of the entire surface. This reduces the probability of missed defects due to limited viewing angles. Furthermore, it can provide adaptive lighting based on the characteristics of different material layers and the structural features of the inspection points, reducing interference from differences in reflectivity between different material layers and the surface structural features of the cover plate on defect extraction. This effectively reduces the false alarm and false alarm rates during the inspection of multi-layer composite heat dissipation shielding covers. Moreover, it can be integrated with automated production lines for multi-layer composite heat dissipation shielding covers, thus meeting the high-precision batch production inspection requirements of multi-layer composite heat dissipation shielding covers.

[0015] Through the coordination of the material transfer component, the qualified product unloading component, and the defective product verification component, qualified and unqualified products are automatically transferred to different areas based on the detection results of the cover plate component. After the qualified products are stacked to a preset quantity, they are automatically moved to the unloading station for easy batch removal by staff. Unqualified products are transferred to the defective product verification station for manual verification by staff after being pulled out. This effectively improves the convenience of subsequent diversion processing after detection and adapts to the production needs of batch automated detection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the appearance of the present invention; Figure 3 This is a schematic diagram showing the external appearance of the first linear motor, the second linear motor, and the base in this invention. Figure 4 This is a schematic diagram showing the appearance of the mounting bracket, CCD camera, and coaxial light source in this invention; Figure 5 This is a schematic diagram showing the appearance of the coaxial light source, the strip light source, and the light shield in this invention; Figure 6 This is a schematic diagram of the appearance of the track base, tray, and movable base in this invention; Figure 7 This is a schematic diagram showing the appearance of the gripping robot, vacuum suction cup, and laser rangefinder sensor in this invention; Figure 8 for Figure 2 A magnified view of a portion of region A in the middle.

[0017] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Material moving assembly; 3. Vision inspection assembly; 4. Material transfer assembly; 5. Qualified product discharge assembly; 6. Defective product inspection assembly; 7. Fixing frame; 21. First linear motor; 22. Second linear motor; 23. First slide rail; 24. Carrier assembly; 241. Base; 242. Lighting backplate; 243. Vacuum suction plate; 244. Material placement trough; 31. Fixing plate; 32. CCD camera; 33. Horizontal plate; 34. Same as above. 35. Axial light source; 36. Light shield; 47. Strip light source; 48. Grasping robot; 49. Suction cup holder; 40. Vacuum suction cup; 41. Laser rangefinder; 52. Track base; 53. Second slide rail; 54. Ball screw; 55. Moving base; 56. Limit plate; 57. Through-beam photoelectric sensor; 58. Push-up assembly; 59. Support plate; 50. Servo cylinder; 61. Fixed base; 62. Third slide rail; 63. Bearing plate; 64. Limit block; 65. Handle. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only 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.

[0019] In existing technologies, multi-layer composite heat dissipation shielding covers cannot accurately cover and collect three-dimensional structural defects such as side steps, interlayer misalignment, and end face burrs. At the same time, the intensity difference of reflected light from different material layers can interfere with the detection algorithm's identification of defect features, resulting in high false alarm and false negative rates, making it difficult to meet the detection requirements of high-precision mass production.

[0020] In view of this, the present invention provides a full-dimensional AOI inspection device for cover plate assemblies. Through the cooperation between the frame, material moving component, vision inspection component, material transfer component, and fixing frame, the cover plate assembly can perform multi-axis position adjustment according to the set path and points during the image acquisition process, automatically complete the image acquisition of all areas of the entire surface, reduce the probability of missed defects due to limited viewing angle, and provide adaptive illumination according to the characteristics of different material layers of the cover plate assembly and the structural features of the inspection points, reduce the interference caused by the difference in reflectivity of different material layers and the structural features of the cover plate surface on defect extraction, thereby effectively reducing the false alarm rate and false alarm rate in the inspection process of multi-layer composite heat dissipation shielding covers, and can meet the inspection requirements of high-precision mass production of multi-layer composite heat dissipation shielding covers.

[0021] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0022] Depend on Figure 1-8 It is known that a full-dimensional AOI inspection device for cover plate components includes a frame 1, with fixed frames 7 fixedly connected to both sides of the top of the frame 1. The full-dimensional AOI inspection device for cover plate components also includes a material moving component 2, a vision inspection component 3, and a material transfer component 4. The material moving component 2 is located at the top of the frame 1 and below the fixed frames 7; the vision inspection component 3 is located at the top of the fixed frames 7; and the material transfer component 4 is located on one side of the top of the frame 1. The material moving component 2 carries the cover plate component and moves it along a preset path in multiple axes. It works with the vision inspection component 3 to perform full-dimensional scanning and imaging of different positions on the outer surface of the cover plate component. After image acquisition is completed, the material transfer component 4 moves the inspected cover plate component out of the inspection station. In the specific implementation process, it is worth noting that the frame 1 provides a supporting foundation for the entire AOI inspection device and is compatible with the production equipment of the upstream and downstream processes. This ensures that the entire inspection process can be integrated into the existing mass production line of cover plate components without requiring significant modifications to the original production line. The fixing frame 7 is used to fix the vision inspection component 3. Through the cooperation between the material moving component 2 and the vision inspection component 3, two sets of motion and acquisition systems for surface defect detection of cover plate components are formed. The material moving component 2 docks with the feeding mechanism of the previous process and automatically receives the cover plate components to be inspected, eliminating the need for manual feeding. Furthermore, during the entire image acquisition process, it can perform multi-axis position adjustments according to the set path and points, automatically completing image acquisition of all areas of the entire surface. At the same time, the vision inspection component 3 has multiple lighting supplementation modes, which can provide adaptive lighting according to the characteristics of different material layers of the cover plate component and the structural features of the inspection points, reducing the impact of different material layers. To mitigate the interference of reflectivity differences and cover plate surface structure features on defect extraction, the material transfer component 4 uses vacuum adsorption to grasp and transfer the completed cover plate components without scratching their surface. It then sorts and discharges the components based on their inspection results. Through the coordination between the frame 1, material moving component 2, vision inspection component 3, material transfer component 4, and fixing frame 7, the cover plate components can perform multi-axis position adjustments according to the set path and points during image acquisition, automatically completing image acquisition of all areas of the entire surface. This reduces the probability of missed defects due to limited viewing angles. Furthermore, it provides adaptive lighting based on the characteristics of different material layers and the structural features of the inspection points, minimizing the interference of reflectivity differences between different material layers and cover plate surface structure features on defect extraction. This effectively reduces the false alarm and false alarm rates during the inspection of multi-layer composite heat dissipation shielding covers, meeting the high-precision batch production inspection requirements for multi-layer composite heat dissipation shielding covers.

[0023] Furthermore, the material moving assembly 2 includes a first linear motor 21, a second linear motor 22, a first slide rail 23, and a carrier assembly 24. Two first linear motors 21 are provided and fixedly connected to the top of the frame 1 and below the fixed frame 7. The second linear motor 22 is fixedly connected to the top side of the output end of the first linear motor 21. The first slide rail 23 is fixedly connected to the top side of the output end of the first linear motor 21 away from the second linear motor 22. The carrier assembly 24 is disposed on top of the second linear motor 22. The first linear motor 21 and the second linear motor 22 can respectively drive the carrier assembly 24 to move along two mutually perpendicular horizontal directions, thereby driving the cover plate assembly to adjust its position on the horizontal plane during the detection process. In the specific implementation process, it is worth noting that the carrier component 24 is used to support the cover plate component. The control system automatically controls the first linear motor 21 and the second linear motor 22 to move the carrier component 24 in multiple axes. According to the set path and shooting points, the carrier component 24 drives the cover plate component to move step by step. After reaching each preset shooting point, it stops and works with the vision detection component 3 to complete the image acquisition of that point. After passing through all preset points, the full-coverage image acquisition of the entire surface area of ​​the cover plate component can be achieved without manual adjustment of the position, which is suitable for the needs of automated batch inspection. The specific models of the first linear motor 21 and the second linear motor 22 are not limited, as long as they meet the usage requirements.

[0024] Furthermore, the carrier assembly 24 includes a base 241, an illumination backplate 242, a vacuum suction plate 243, and a material placement slot 244. The base 241 is fixedly connected to the output end of the second linear motor 22 and slidably connected to the outer wall of the first slide rail 23. The illumination backplate 242 is fixedly connected to the top of the base 241. The vacuum suction plate 243 is fixedly connected to the top of the base 241 and is disposed on top of the illumination backplate 242. The material placement slot 244 is disposed on top of the vacuum suction plate 243. After the cover assembly is placed in the material placement slot 244, the vacuum suction plate 243 adsorbs and fixes the cover assembly through vacuum negative pressure, and the illumination backplate 242 provides supplementary lighting from the back of the cover assembly. In the specific implementation process, it is worth noting that the vacuum suction plate 243 is connected to an external vacuum device. After the cover plate assembly is placed into the material placement slot 244, the vacuum suction plate 243 starts vacuum negative pressure to adsorb and fix the cover plate assembly, avoiding displacement and shaking of the cover plate assembly during image acquisition, and ensuring the clarity and stability of the captured image. When it is necessary to detect structural defects on the edge and end face of the cover plate, the backlight plate 242 located on the back provides transmissive supplementary light from behind the cover plate assembly, which can highlight the contour structure of the edge and end face, making it easier to extract the features of three-dimensional structural defects and further reducing the probability of missed defect detection.

[0025] Furthermore, the visual inspection component 3 includes a fixed plate 31, a CCD camera 32, a horizontal plate 33, a coaxial light source 34, a light shield 35, and a strip light source 36. The fixed plate 31 is fixedly connected to the top of the mounting frame 7; the CCD camera 32 is fixedly connected to the top of the fixed plate 31; the horizontal plate 33 is fixedly connected to the mounting frame 7 and located below the fixed plate 31; the coaxial light source 34 is fixedly connected to the top of the horizontal plate 33 and is positioned opposite to the CCD camera 32; the light shield 35 is fixedly connected to the bottom of the fixed plate 31, and its bottom end is fixedly connected to the coaxial light source 34; multiple strip light sources 36 are provided and fixedly connected to the bottom of the horizontal plate 33, located outside the coaxial light source 34; wherein, the coaxial light source 34 and the strip light source 36 provide illumination at different angles for image acquisition of the cover plate component, and cooperate with the CCD camera 32 to take pictures from above the cover plate component; In the specific implementation process, it is worth noting that through the cooperation between the fixing frame 7, fixing plate 31, CCD camera 32, horizontal plate 33, coaxial light source 34, light shield 35, and strip light source 36, the coaxial light source 34 and strip light source 36 provide suitable illumination for the CCD camera 32 to collect images of areas with different structural features and materials. For the flat large areas of the cover plate assembly, the coaxial light source 34 is used for supplementary lighting, which can effectively reduce the diffuse reflection interference caused by the uneven structure of the cover plate surface. For three-dimensional structural defects such as side steps and interlayer misalignment, the strip light source 36 arranged at different angles illuminates from the side, which can highlight the contour and height difference features of the defect location, making it easier for the detection algorithm to accurately extract the defect features. At the same time, the light shield 35 can block the interference of external ambient light on image acquisition, further improving the quality of the acquired image and reducing misjudgments caused by ambient light interference. The specific models of the CCD camera 32, coaxial light source 34, and strip light source 36 are not limited, as long as they meet the usage requirements.

[0026] Furthermore, the material transfer component 4 includes a gripping robot 41, a suction cup frame 42, a vacuum suction cup 43, and a laser rangefinder 44. The gripping robot 41 is fixedly connected to the top of the frame 1 and located on one side of the two fixed frames 7. The suction cup frame 42 is fixedly connected to the output end of the gripping robot 41. Multiple vacuum suction cups 43 are provided and are fixedly connected to the bottom of the suction cup frame 42 at equal intervals. The laser rangefinder 44 is fixedly connected to the top of the suction cup frame 42. The vacuum suction cup 43 grips the cover plate component by vacuum adsorption. During the gripping process, the laser rangefinder 44 detects the position of the cover plate component and assists the gripping robot 41 in adjusting the gripping height. After the gripping is completed, the gripping robot 41 moves the cover plate component to the preset unloading area for unloading. In the specific implementation process, it is worth noting that through the cooperation between the gripping robot 41, the suction cup frame 42, the vacuum suction cup 43, and the laser rangefinder 44, after the image acquisition is completed, the control system controls the gripping robot 41 to move the suction cup frame 42 above the carrier assembly 24. The laser rangefinder 44 detects the distance between the suction cup frame 42 and the cover assembly in real time, assisting the gripping robot 41 in adjusting the moving height to avoid bumping and scratching the surface of the cover assembly during the movement. After reaching the position, the vacuum suction cup 43 connects to the vacuum negative pressure to adsorb and grip the cover assembly and move the cover assembly. According to the detection results, the cover assembly is transferred to the corresponding discharge area. The specific model of the gripping robot 41 is not limited, as long as it meets the usage requirements.

[0027] Furthermore, a qualified product discharge assembly 5 is provided on one side of the top of the frame 1. The qualified product discharge assembly 5 includes a track seat 51, a second slide rail 52, a ball screw 53, a movable seat 54, a limiting plate 55, a through-beam photoelectric sensor 56, and an upward push assembly 57. The track seat 51 is fixedly connected to one side of the top of the frame 1; the second slide rail 52 is fixedly connected to both sides of the top of the track seat 51; the ball screw 53 is rotatably connected to the inside of the track seat 51; the movable seat 54 is located above the track seat 51, slidably connected to the outer wall of the second slide rail 52, and threadedly connected to the ball screw 53. The outer wall; two sets of limiting plates 55 are fixedly connected to the top two sides of the movable seat 54; through-beam photoelectric sensors 56 are set on the top of the outer wall of the two limiting plates 55 on the same side; the push assembly 57 is set on the top of the movable seat 54; wherein, the material transfer assembly 4 places qualified cover plate assemblies on the top of the movable seat 54 for stacking. When the through-beam photoelectric sensor 56 detects that the stacked cover plate assemblies have reached the preset number, the ball screw 53 drives the movable seat 54 to move along the second slide rail 52 to the unloading position, so that the staff can take out the stacked qualified cover plate assemblies. In the specific implementation process, it is worth noting that when the test result of the cover plate assembly is qualified, the material transfer assembly 4 places the cover plate assembly on the moving seat 54 of the qualified product discharge assembly 5, and limits the cover plate assembly by two sets of limiting plates 55. When the cover plate assemblies are stacked to a certain number, the sensing light of the through-beam photoelectric sensor 56 is blocked by the cover plate assembly, generating an arrival signal that is fed back to the control system. The control system controls the servo motor located at one end of the track seat 51 to drive the ball screw 53 to rotate, driving the moving seat 54 to move along the second slide rail 52 to the unloading station. The staff takes out the stacked qualified cover plate assemblies, realizing automatic stacking and unloading of qualified products without the need for manual collection one by one, effectively reducing the labor intensity of workers in the inspection process and adapting to the inspection rhythm of batch production. The specific model of the through-beam photoelectric sensor 56 is not limited, as long as it meets the usage requirements.

[0028] Furthermore, the push-up assembly 57 includes a support plate 571 and a servo cylinder 572. The support plate 571 is positioned above the movable seat 54 and is connected to the limiting plate 55. The servo cylinder 572 is fixedly connected to both sides of the top of the movable seat 54, and its output end is fixedly connected to the support plate 571. After the movable seat 54 moves to the unloading position, the servo cylinder 572 drives the support plate 571 to extend upward, lifting the stacked cover plate assembly upward for easy removal. In the specific implementation process, it is worth noting that through the cooperation between the movable seat 54, the pallet 571, and the servo cylinder 572, when the movable seat 54 moves to the unloading station, the operator controls the servo cylinder 572 to push the pallet 571 upward, lifting the cover plate assembly stacked on the pallet 571 as a whole, making it convenient for the operator to remove the stacked cover plate assembly, further improving the convenience of the unloading operation and reducing the fatigue of manual operation. The specific model of the servo cylinder 572 is not limited, as long as it meets the usage requirements.

[0029] Furthermore, a defective product inspection component 6 is installed on the top of the frame 1 on the side of the gripping robot 41 away from the track seat 51. The defective product inspection component 6 includes a fixed base 61, a third slide rail 62, a support plate 63, limit blocks 64, and a handle 65. The fixed base 61 is fixedly connected to the top of the frame 1 on the side of the gripping robot 41 away from the track seat 51; the third slide rail 62 is fixedly connected to both sides of the top of the fixed base 61; the support plate 63 is slidably connected to the outer wall of the third slide rail 62; multiple limit blocks 64 are provided and distributed on the top of the support plate 63; the handle 65 is fixedly connected to the outer wall of the support plate 63 on the side away from the gripping robot 41. The material transfer component 4 grips the cover plate component that is determined to be unqualified and places it on the support plate 63, which is limited by multiple limit blocks 64. The operator pulls out the support plate 63 through the handle 65 to manually inspect the defective product. In the specific implementation process, it is worth noting that, through the cooperation between the fixed seat 61, the third slide rail 62, the bearing plate 63, the limit block 64 and the handle 65, when the test result is determined to be unqualified, the material transfer component 4 grabs the cover plate component and places it on the bearing plate 63, and reminds the staff to perform manual verification. The staff pulls the handle 65 to pull out the bearing plate 63 as a whole, and performs manual review of the defective cover plate component to confirm the defect type and defect location, distinguish between repairable defects and scrap defects, which facilitates subsequent classification and processing.

[0030] 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. A full-dimensional AOI inspection device for cover plate components, comprising a frame (1), characterized in that: The top two sides of the frame (1) are fixedly connected to the fixing brackets (7), and the cover plate assembly full-dimensional AOI inspection device also includes: Material moving assembly (2) is set at the top of frame (1) and below fixed frame (7); A visual inspection component (3) is mounted on top of the fixture (7); Material transfer assembly (4) is located on one side of the top of the frame (1); The material moving component (2) carries the cover plate component to move along a preset path in multiple axes. The visual inspection component (3) performs full-dimensional scanning and imaging of different positions on the outer surface of the cover plate component. After image acquisition is completed, the material transfer component (4) moves the inspected cover plate component out of the inspection station.

2. The cover plate assembly full-dimensional AOI inspection device according to claim 1, characterized in that: The material moving component (2) includes: Two first linear motors (21) are provided, which are fixedly connected to the top of the frame (1) and the bottom of the fixed frame (7); The second linear motor (22) is fixedly connected to the top side of the output end of the first linear motor (21); The first slide rail (23) is fixedly connected to the top of the output end of the first linear motor (21) on the side away from the second linear motor (22); The vehicle assembly (24) is located on top of the second linear motor (22); The first linear motor (21) and the second linear motor (22) can drive the carrier assembly (24) to move along two mutually perpendicular horizontal directions, thereby driving the cover assembly to adjust its position on the horizontal plane during the detection process.

3. The cover plate assembly full-dimensional AOI inspection device according to claim 2, characterized in that: The vehicle assembly (24) includes: The base (241) is fixedly connected to the output end of the second linear motor (22) and slidably connected to the outer wall of the first slide rail (23); An illumination backplate (242) is fixedly connected to the top of the base (241); A vacuum suction plate (243) is fixedly connected to the top of the base (241) and disposed on the top of the lighting back plate (242); A material placement trough (244) is disposed on top of the vacuum suction plate (243); After the cover plate assembly is placed in the material placement groove (244), the vacuum suction plate (243) adsorbs and fixes the cover plate assembly by vacuum negative pressure, and the lighting back plate (242) provides supplementary lighting from the back of the cover plate assembly.

4. The cover plate assembly full-dimensional AOI inspection device according to claim 3, characterized in that: The visual inspection component (3) includes: The fixing plate (31) is fixedly connected to the top of the fixing frame (7); A CCD camera (32) is fixedly connected to the top of the fixing plate (31); A horizontal plate (33) is fixedly connected to a fixing frame (7) and located below a fixing plate (31); A coaxial light source (34) is fixedly connected to the top of the horizontal plate (33) and is positioned opposite to the CCD camera (32); A light shield (35) is fixedly connected to the bottom of the fixing plate (31), and its bottom end is fixedly connected to the coaxial light source (34). Multiple strip light sources (36) are provided and are fixedly connected to the bottom of the horizontal plate (33) located outside the coaxial light source (34); The coaxial light source (34) and the strip light source (36) provide illumination from different angles for image acquisition of the cover plate assembly, and work with the CCD camera (32) to take pictures from above the cover plate assembly.

5. The cover plate assembly full-dimensional AOI inspection device according to claim 4, characterized in that: The material transfer component (4) includes: The gripping robot (41) is fixedly connected to the top of the frame (1) on one side of the two fixed frames (7); The suction cup holder (42) is fixedly connected to the output end of the gripping robot (41); Multiple vacuum suction cups (43) are provided and are fixedly connected to the bottom of the suction cup holder (42) at equal intervals; A laser rangefinder (44) is fixedly connected to the top of the suction cup holder (42); The vacuum suction cup (43) uses vacuum adsorption to grab the cover plate assembly. During the grabbing process, the laser range sensor (44) detects the position of the cover plate assembly and assists the grabbing robot (41) in adjusting the grabbing height. After the grabbing is completed, the grabbing robot (41) drives the cover plate assembly to the preset unloading area for unloading.

6. The cover plate assembly full-dimensional AOI inspection device according to claim 5, characterized in that: A qualified product discharge assembly (5) is provided on one side of the top of the frame (1), and the qualified product discharge assembly (5) includes: The track seat (51) is fixedly connected to one side of the top of the frame (1); The second slide rail (52) is fixedly connected to the top two sides of the track seat (51); The ball screw (53) is rotatably connected to the inside of the track seat (51); The movable seat (54) is disposed above the track seat (51), slidably connected to the outer wall of the second slide rail (52), and threadedly connected to the outer wall of the ball screw (53); Two sets of limiting plates (55) are provided and are fixedly connected to the top sides of the movable seat (54); A through-beam photoelectric sensor (56) is disposed on the top of the outer wall of the two limiting plates (55) located on the same side; The push-up component (57) is located on top of the movable base (54); The material transfer component (4) places qualified cover plate components on top of the moving seat (54) for stacking. When the through-beam photoelectric sensor (56) detects that the stacked cover plate components have reached a preset number, the ball screw (53) drives the moving seat (54) to move along the second slide rail (52) to the unloading position, so that the staff can take out the stacked qualified cover plate components.

7. The cover plate assembly full-dimensional AOI inspection device according to claim 6, characterized in that: The push-up component (57) includes: The tray (571) is located above the movable seat (54) and is connected to the limiting plate (55). The servo cylinder (572) is fixedly connected to the top two sides of the movable seat (54), and its output end is fixedly connected to the tray (571). In this process, after the moving seat (54) moves to the unloading position, the servo cylinder (572) drives the tray (571) to extend upward, lifting the stacked cover plate assembly upward for easy removal.

8. The cover plate assembly full-dimensional AOI inspection device according to claim 7, characterized in that: A defective product inspection component (6) is provided on the top of the frame (1) on the side of the gripping robot (41) away from the track seat (51). The defective product inspection component (6) includes: The fixed base (61) is fixedly connected to the top of the frame (1) on the side of the gripping robot (41) away from the track base (51); The third slide rail (62) is fixedly connected to the top two sides of the fixed base (61); The support plate (63) is slidably connected to the outer wall of the third slide rail (62); Multiple limiting blocks (64) are provided and distributed on the top of the bearing plate (63); The handle (65) is fixedly connected to the outer wall of the support plate (63) on the side away from the gripping robot (41); The material transfer component (4) picks up the cover plate component that is determined to be unqualified and places it on the carrier plate (63), and is limited by multiple limit blocks (64). The staff pulls out the carrier plate (63) through the handle (65) to manually check the defective products.

9. A method for full-dimensional AOI inspection of a cover plate assembly, applied in a full-dimensional AOI inspection device for a cover plate assembly as described in claim 8, characterized in that: Includes the following steps: S1. The cover plate assembly to be tested is placed into the material placement trough (244) by the feeding mechanism of the previous process. The vacuum suction plate (243) adsorbs and fixes the cover plate assembly by vacuum negative pressure. The control system automatically controls the first linear motor (21) to move the cover plate assembly to be tested to the lower part of the fixing frame (7). S2. After the cover plate assembly moves to the bottom of the fixed frame (7), the control system automatically controls the first linear motor (21) and the second linear motor (22) to drive the carrier assembly (24) to move the cover plate assembly step by step according to the set path and shooting point. After moving to a preset shooting point, the CCD camera (32) completes the image acquisition of the point under different lighting conditions with the cooperation of the coaxial light source (34), the strip light source (36) and the lighting back plate (242). After the shooting of all points is completed in sequence, the detection image of the entire surface of the cover plate assembly can be obtained, and the acquired image data is transmitted to the image processing unit in real time. The image processing unit analyzes and processes the image to identify the appearance defects such as scratches, stains, defects, and deformation on the surface of the cover plate assembly. S3. After image acquisition is completed, the control system automatically controls the first linear motor (21) to move the cover plate assembly to the side close to the gripping robot (41). The gripping robot (41) uses the vacuum suction cup (43) to adsorb and grip the cover plate assembly that has been tested. Then, the control system automatically controls the first linear motor (21) to drive the base (241) to move to the initial position and wait for the next loading. S4. The control system transfers the completed cover plate assembly according to the test results. If it is a qualified product, the gripping robot (41) places the cover plate assembly on the top of the tray (571) of the qualified product discharge assembly (5). When the qualified cover plate assembly is stacked to a preset number, the control system automatically controls the servo motor located at one end of the ball screw (53) to drive the ball screw (53) to rotate, drive the moving seat (54) to move to the unloading position, and control the servo cylinder (572) to lift the tray (571) and the stacked cover plate assembly upwards so that the staff can take it out. S5. If the cover plate assembly is found to be defective, the gripping robot (41) places the cover plate assembly on the carrier plate (63) of the defective product inspection component (6), and the staff pulls the carrier plate (63) outward for manual inspection and confirmation.

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