Visual inspection device for automatic centering ring inspection of glass panel and inspection method thereof

Abstract

The invention relates to the technical field of glass panel detection, in particular to a visual detection device for automatic centering ring detection of a glass panel and a detection method thereof.The visual detection device comprises a rack, a hollow cylinder is rotationally arranged on the rack, and a first rotating shaft rotationally arranged on the rack is movably inserted into the hollow cylinder; the first rotating shaft is driven by a first driving source arranged on the rack to rotate, and a vacuum chuck used for adsorbing and fixing a glass panel is arranged on the first rotating shaft; a plurality of arc-shaped clamping plates are arranged on the peripheral side of the vacuum suction cup, and the arc-shaped clamping plates are matched with the hollow cylinder through a linkage structure, the geometric center of the glass panel can be automatically determined with high precision, initial positioning deviation is eliminated, deviation of the center point of the glass panel is avoided, and therefore the detection precision is effectively improved; in addition, efficient, automatic and high-reliability 360-degree annular area defect detection and size measurement can be realized, and the dual requirements of modern intelligent manufacturing on quality and efficiency are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass panel detection, and particularly relates to a visual detection device for automatic centering ring detection of a glass panel and a detection method thereof. BACKGROUND

[0002] With the rapid development of consumer electronics, automotive electronics, smart home and other industries, glass panels have been widely used due to their excellent light transmittance, aesthetics, touch performance and strength. These glass panels usually have extremely strict requirements for surface finish, edge integrity, processing precision of specific areas and appearance quality. Any tiny scratch, edge collapse, dirt, bubble, color difference, poor coating or geometric size deviation may cause the product to fail or the user experience to decrease.

[0003] At present, the quality detection of glass panels, especially the fine detection of the edge ring area or specific ring structure on the panel, mainly relies on the following methods, but all have significant shortcomings: Manual visual detection: (1) Low efficiency and high cost: In batch production, manual detection speed is difficult to meet the demand of high-speed production line, and a large number of skilled workers need to be invested; (2) Strong subjectivity and poor stability: The detection result is greatly affected by factors such as worker experience, mental state, visual fatigue, etc., it is difficult to ensure consistent judgment standard, and the miss rate and false detection rate are high; (3) Unable to accurately quantify: For tiny defects or size deviations, the human eye cannot accurately identify and quantify them; (4) Difficult to cover ring detection needs: 360-degree comprehensive and uniform inspection of the ring area (especially the edge) requires manual rotation or adjustment of the panel viewing angle, which is tedious and easy to miss.

[0004] Traditional machine vision detection (non-automatic centering): (1) Positioning accuracy depends on initial position: Existing visual detection equipment usually requires the glass panel to be pre-placed in a relatively fixed position by a mechanical carrier (such as a suction cup, jig). However, due to the limitations of repeated positioning accuracy of the feeding mechanism, manufacturing or wear errors of the carrier itself, and size tolerances of the glass panel itself, the actual position of the panel (especially the center position) deviates from the theoretical coordinate system of the vision system; (2) Inaccurate positioning of ring detection area: This initial positioning deviation directly leads to the fact that the target ring area (such as the edge chamfer ring, decorative ring) cannot be accurately positioned at the center or best position of the preset detection field during subsequent image acquisition and analysis.

[0005] For ring detection, the deviation of the center point will seriously affect the detection accuracy, especially: 1) edge detection: the edge may be partially out of the field of view or in the poor imaging quality area at the edge of the field of view; 2) ring feature detection: the preset ring detection field of view cannot perfectly match the actual feature, resulting in that the detection algorithm cannot correctly cover the target area or introduces non-target area interference, causing missed detection or false detection; 3) size measurement: the inaccuracy of the center point will cause the measurement results of the radius, roundness and other ring geometric dimensions to be distorted.

[0006] Although some devices use simple mechanical limiting or low-precision sensors for rough positioning, they cannot achieve the high-precision centering requirement for ring detection, and the centering process may take a long time, affecting the overall detection cycle. Therefore, we provide a glass panel automatic centering ring detection visual detection device and its detection method to solve the above-mentioned problems. SUMMARY

[0007] The purpose of the present application is to provide a glass panel automatic centering ring detection visual detection device and its detection method to solve the problems raised in the background art.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A glass panel automatic centering ring detection visual detection device, comprising a rack, a hollow cylinder is rotationally arranged on the rack, a first rotating shaft is movably inserted into the hollow cylinder and rotationally arranged on the rack, the first rotating shaft is driven to rotate by a first driving source arranged on the rack, and a vacuum chuck for adsorbing and fixing a glass panel is arranged on the first rotating shaft. A plurality of arc-shaped clamping plates are arranged on the outer periphery of the vacuum chuck, and the plurality of arc-shaped clamping plates are cooperated with the hollow cylinder through a linkage structure, so that the hollow cylinder drives the plurality of arc-shaped clamping plates to perform radial expansion movement or radial contraction movement synchronously when the hollow cylinder rotates clockwise or counterclockwise, and the hollow cylinder is driven to rotate by a second driving source arranged on the rack. A visual detection unit for defect detection of the glass panel is arranged on the rack above the first rotating shaft.

[0009] The first driving source comprises a first motor arranged on the rack, the first rotating shaft is installed on the output end of the first motor and is driven to rotate by the first motor.

[0010] The plurality of arc-shaped clamping plates are circumferentially spaced apart on the outer periphery of the vacuum chuck, the arc-shaped clamping plate has an inner concave working surface, the geometric profile of the inner concave working surface is matched with the outer circumferential surface of the glass panel, and the curvature center axis of the inner concave working surface is coaxially arranged with the rotation axis of the vacuum chuck.

[0011] The visual detection device for automatically centering and detecting the glass panel as described above, the linkage structure comprises a fixed plate arranged on the rack and a ring-shaped plate arranged on the fixed plate, the fixed plate is provided with a rotating disc arranged on the hollow cylinder, a plurality of arc-shaped grooves are formed in the rotating disc, a limiting rod is movably connected in the arc-shaped groove, the limiting rod is provided with a movable rod penetrating through the ring-shaped plate, and the movable rod is fixedly connected with the arc-shaped clamping plate.

[0012] The visual detection device for automatically centering and detecting the glass panel as described above, the plurality of arc-shaped grooves are circumferentially distributed on the rotating disc at equal angles, the inner surface size of the arc-shaped groove is matched with the outer surface size of the limiting rod, and the limiting rod can slide in the arc-shaped groove.

[0013] The visual detection device for automatically centering and detecting the glass panel as described above, the outer diameter size of the rotating disc is matched with the inner diameter size of the ring-shaped plate, the rotating disc is movably connected in the ring-shaped plate, the ring-shaped plate is provided with a through groove with an inner surface size matched with the outer surface size of the movable rod, and the movable rod penetrates and is connected in the through groove.

[0014] The visual detection device for automatically centering and detecting the glass panel as described above, the second driving source comprises a first gear and a second gear rotatably arranged on the rack, the first gear is arranged on the hollow cylinder, the first gear is engaged with the second gear, the rack is provided with a second motor, the second gear is mounted on the output shaft of the second motor and is driven to rotate by the second motor.

[0015] The visual detection device for automatically centering and detecting the glass panel as described above, the visual detection unit comprises a first support arranged on the rack, the first support is provided with an industrial camera, and the industrial camera is driven to ascend and descend by a third driving source arranged on the first support. The third driving source comprises a pneumatic cylinder arranged on the first support, the output end of the pneumatic cylinder is provided with a piston rod, and the industrial camera is fixedly mounted on the piston rod.

[0016] A detection method of the visual detection device for automatically centering and detecting the glass panel, comprising the following steps, S1, the glass panel to be detected is conveyed to above the vacuum chuck and is fixedly adsorbed by the vacuum chuck; S2, the second driving source drives the hollow cylinder to rotate counterclockwise, synchronously drives the plurality of arc-shaped clamping plates to perform radial contraction movement, synchronously clamps and limits the circumferential side of the glass panel to automatically center, so that the central axis of the glass panel is coaxial with the rotating axis of the vacuum chuck, then the second driving source drives the hollow cylinder to rotate clockwise, synchronously drives the plurality of arc-shaped clamping plates to perform radial expansion movement to release the limitation of the circumferential side of the glass panel. S3, the first driving source drives the first rotating shaft to rotate intermittently to drive the glass panel on the vacuum chuck to rotate intermittently, and the visual detection unit is used for 360° visual defect detection of the glass panel.

[0017] Compared with the prior art, the beneficial effects of the present application are: when in use, the glass panel to be detected is conveyed to above the vacuum chuck and fixed by the vacuum chuck; then the second driving source drives the hollow cylinder to rotate counterclockwise, synchronously drives the plurality of arc-shaped clamping plates to perform radial contraction movement, and automatically centers the glass panel by synchronously clamping and limiting the periphery of the glass panel, so that the central axis of the glass panel is coaxial with the rotation axis of the vacuum chuck; then the second driving source drives the hollow cylinder to rotate clockwise, synchronously drives the plurality of arc-shaped clamping plates to perform radial expansion movement to release the limitation of the periphery of the glass panel; then the first driving source is used to drive the first rotating shaft to rotate intermittently to drive the glass panel on the vacuum chuck to rotate intermittently, and the visual detection unit is used for 360° visual defect detection of the glass panel. Therefore, after the glass panel is fixed by the vacuum chuck, the plurality of arc-shaped clamping plates are used to perform radial contraction movement to limit the glass panel from multiple angles to make the central axis of the glass panel coaxial with the rotation axis of the vacuum chuck, so that the geometric center of the glass panel can be automatically and high-precisely determined, the initial positioning deviation is eliminated, the center point of the glass panel is avoided to deviate, the detection range of the visual detection unit is fixed when the glass panel is adjusted in the rotating position, and the detection accuracy is effectively improved. In addition, the first driving source drives the first rotating shaft to rotate intermittently to drive the glass panel on the vacuum chuck to rotate intermittently, and the visual detection unit can be used for 360° visual defect detection of the glass panel, so that high-efficiency, automatic, high-reliability 360° annular area defect detection and size measurement can be realized, and the dual requirements of quality and efficiency of modern intelligent manufacturing are met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a first visual angle overall structure schematic view of a visual detection device for automatic centering and ring detection of a glass panel.

[0019] Figure 2 It is a second visual angle overall structure schematic view of a visual detection device for automatic centering and ring detection of a glass panel.

[0020] Figure 3 It is a partial front view structure schematic view of a visual detection device for automatic centering and ring detection of a glass panel.

[0021] Figure 4 It is a partial front view structure schematic view of a visual detection device for automatic centering and ring detection of a glass panel. Figure 1 It is a partial structure schematic view after decomposition.

[0022] Figure 5A visual detection device for automatic centering ring detection of a glass panel Figure 4 Another perspective view of the structure.

[0023] Figure 6 A visual detection device for automatic centering ring detection of a glass panel Figure 5 Partial exploded view of the structure.

[0024] Figure 7 A visual detection device for automatic centering ring detection of a glass panel Figure 6 Exploded view of the structure.

[0025] Figure 8 A visual detection device for automatic centering ring detection of a glass panel Figure 7 Partial exploded view of the structure.

[0026] Figure 9 A visual detection device for automatic centering ring detection of a glass panel Figure 8 Partial enlarged view of the structure.

[0027] Figure 10 A visual detection device for automatic centering ring detection of a glass panel Figure 8 Top view of the structure.

[0028] In the figure: 1, frame; 2, hollow cylinder; 3, first rotating shaft; 4, first motor; 5, vacuum chuck; 6, arc-shaped clamping plate; 7, first gear; 8, second gear; 9, second motor; 10, fixed plate; 11, rotating disc; 12, arc-shaped groove; 13, annular plate; 14, limiting rod; 15, movable rod; 16, first support; 17, air cylinder; 18, piston rod; 19, industrial camera; 20, second support; 21, fill-in light. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0030] Please refer to Figures 1-10 As an embodiment of the present application, a visual detection device for automatic centering ring detection of a glass panel comprises a frame 1, a hollow cylinder 2 is rotatably arranged on the frame 1, a first rotating shaft 3 is movably inserted into the hollow cylinder 2 and rotatably arranged on the frame 1, the first rotating shaft 3 is driven to rotate by a first driving source arranged on the frame 1, and a vacuum chuck 5 for adsorbing and fixing the glass panel is arranged on the first rotating shaft 3. A plurality of arc-shaped clamping plates 6 are arranged on the outer periphery of the vacuum chuck 5, and are connected to the hollow cylinder 2 through a linkage structure. A visual detection unit for detecting defects of the glass panel is arranged on the rack 1 above the first rotating shaft 3.

[0031] In use, the vacuum chuck 5 is connected to a vacuum pump, and the vacuum chuck 5 is vacuumized by the vacuum pump to form a negative pressure state. When the glass panel to be detected is conveyed above the vacuum chuck 5, the glass panel is adsorbed and fixed by the vacuum chuck 5. Then, the second driving source drives the hollow cylinder 2 to rotate counterclockwise, and synchronously drives the plurality of arc-shaped clamping plates 6 to perform radial contraction movement, so as to synchronously clamp and center the glass panel, and make the central axis of the glass panel coaxial with the rotating axis of the vacuum chuck 5. Then, the first driving source drives the first rotating shaft 3 to intermittently rotate, so as to drive the glass panel on the vacuum chuck 5 to intermittently rotate, and the visual detection unit performs 360° visual defect detection on the glass panel.

[0032] As a further scheme of the present application, the first driving source comprises a first motor 4 arranged on the rack 1, and the first rotating shaft 3 is installed on the output end of the first motor 4 and is driven to rotate by the first motor 4.

[0033] In this embodiment, the first motor 4 is electrically connected to an external power source through wires, and the first motor 4 is started to drive the first rotating shaft 3 to rotate. When the first rotating shaft 3 rotates, the vacuum chuck 5 is driven to rotate. Then, the first motor 4 is driven to intermittently rotate the first rotating shaft 3, so as to drive the glass panel on the vacuum chuck 5 to intermittently rotate.

[0034] As a further scheme of the present application, the plurality of arc-shaped clamping plates 6 are arranged on the outer periphery of the vacuum chuck 5 in a circumferential direction, and the arc-shaped clamping plates 6 have an inner concave working surface, the geometric profile of the inner concave working surface is matched with the outer circumferential surface of the glass panel, and the central axis of the curvature of the inner concave working surface is coaxially arranged with the rotating axis of the vacuum chuck 5.

[0035] In this embodiment, the plurality of arc-shaped clamping plates 6 are arranged on the outer periphery of the vacuum chuck 5 in a circumferential direction, and the arc-shaped clamping plates 6 have an inner concave working surface, the geometric profile of the inner concave working surface is matched with the outer circumferential surface of the glass panel, and then the plurality of arc-shaped clamping plates 6 can be synchronously moved to the circumferential side of the glass panel to clamp and limit the glass panel when the plurality of arc-shaped clamping plates 6 synchronously perform radial contraction movement, so as to make the central axis of the glass panel coaxial with the rotating axis of the vacuum chuck 5. Thus, the vacuum chuck 5 can drive the glass panel to rotate around the central axis when the vacuum chuck 5 rotates. In addition, the surface of the arc-shaped clamping plate 6 is fixedly connected with a soft rubber layer. Thus, the damage to the edge of the glass panel caused by the clamping of the arc-shaped clamping plate 6 can be reduced.

[0036] As a further scheme of the present application, the linkage structure comprises a fixed plate 10 arranged on the frame 1 and a ring plate 13 arranged on the fixed plate 10, the fixed plate 10 is arranged with a rotating disc 11 arranged on the hollow cylinder 2, the rotating disc 11 is arranged with a plurality of arc-shaped grooves 12, the arc-shaped grooves 12 are movably connected with limiting rods 14, the limiting rods 14 are arranged with movable rods 15 penetrating through the ring plate 13, and the movable rods 15 are fixedly connected with the arc-shaped clamping plates 6.

[0037] In this embodiment, when the hollow cylinder 2 rotates, the rotating disc 11 rotates, the limiting rods 14 slide in the arc-shaped grooves 12, the movable rods 15 move radially, the arc-shaped clamping plates 6 move synchronously, and when the rotating disc 11 rotates, the plurality of arc-shaped clamping plates 6 move radially synchronously, and when the rotating disc 11 rotates clockwise and counterclockwise, the plurality of arc-shaped clamping plates 6 can respectively move radially synchronously.

[0038] As a further scheme of the present application, the plurality of arc-shaped grooves 12 are circumferentially distributed at equal angles on the rotating disc 11, the inner surface size of the arc-shaped grooves 12 is matched with the outer surface size of the limiting rods 14, and the limiting rods 14 can slide in the arc-shaped grooves 12.

[0039] In this embodiment, when the rotating disc 11 rotates, the limiting rods 14 slide in the arc-shaped grooves 12, the movable rods 15 move, and the arc-shaped clamping plates 6 move.

[0040] As a further scheme of the present application, the outer diameter size of the rotating disc 11 is matched with the inner diameter size of the ring plate 13, the rotating disc 11 is movably connected in the ring plate 13, the ring plate 13 is arranged with through grooves with inner surface sizes matched with the outer surface sizes of the movable rods 15, and the movable rods 15 penetrate and are inserted in the through grooves.

[0041] In this embodiment, the outer diameter size of the rotating disc 11 is matched with the inner diameter size of the ring plate 13, the rotating disc 11 is movably connected in the ring plate 13, the ring plate 13 is arranged with through grooves with inner surface sizes matched with the outer surface sizes of the movable rods 15, and the movable rods 15 penetrate and are inserted in the through grooves, so that the movable rods 15 can be limited when moving through the through grooves.

[0042] As a further scheme of the present application, the second driving source comprises a first gear 7 and a second gear 8 rotatably arranged on the frame 1, the first gear 7 is arranged on the hollow cylinder 2, the first gear 7 is engaged with the second gear 8, the frame 1 is arranged with a second motor 9, and the second gear 8 is mounted on the output shaft of the second motor 9 and is driven to rotate by the second motor 9.

[0043] In this embodiment, the second motor 9 is electrically connected with an external power source through wires, and starting the second motor 9 can drive the second gear 8 to rotate, and the first gear 7 is engaged with the second gear 8, so that the second gear 8 drives the first gear 7 to rotate when rotating, and the first gear 7 is arranged on the hollow cylinder 2, so that the first gear 7 drives the hollow cylinder 2 to rotate when rotating.

[0044] As a further scheme of the present application, the visual detection unit comprises a first support 16 arranged on the rack 1, and an industrial camera 19 is arranged on the first support 16, and the industrial camera 19 is driven to lift by a third driving source arranged on the first support 16. The third driving source comprises a cylinder 17 arranged on the first support 16, and a piston rod 18 is arranged at the output end of the cylinder 17, and the industrial camera 19 is fixedly installed on the piston rod 18.

[0045] In this embodiment, the industrial camera 19 is connected with an external computer through wires, and the industrial camera 19 is used to transmit collected image information to the external computer, and the computer is used to analyze and detect surface defects of the glass panel, and starting the cylinder 17 can drive the piston rod 18 to extend and retract, so as to drive the industrial camera 19 to lift, so that the field of view range of the industrial camera 19 during image collection can be adjusted, and the detection of defects of glass panels of different specifications can be facilitated.

[0046] A light supplement lamp 21 is arranged on the rack 1 and between the vacuum suction cup 5 and the industrial camera 19, and a second support 20 is arranged on the rack 1, and the light supplement lamp 21 is arranged on the second support 20.

[0047] In this embodiment, the light supplement lamp 21 is arranged between the vacuum suction cup 5 and the industrial camera 19, and the light supplement lamp 21 can be used to supplement light on the glass panel, so that the edge of the glass panel is clearer, and the image collection clarity of the industrial camera 19 is increased.

[0048] In use, first, the glass panel to be detected is conveyed above the vacuum chuck 5, the vacuum chuck 5 is connected with the vacuum pump, the interior of the vacuum chuck 5 is vacuumized by the vacuum pump to form a negative pressure state, and the glass panel is adsorbed and fixed by the vacuum chuck 5; then the second motor 9 is started to drive the second gear 8 to rotate, the first gear 7 is engaged with the second gear 8, the second gear 8 rotates to drive the first gear 7 to rotate, the first gear 7 is arranged on the hollow cylinder 2, thus the first gear 7 rotates to drive the hollow cylinder 2 to rotate counterclockwise, the plurality of arc-shaped clamping plates 6 are synchronously driven to perform radial contraction movement, the glass panel is synchronously clamped and centered and positioned automatically, the central axis of the glass panel is coaxial with the rotation axis of the vacuum chuck 5; then the first motor 4 is started to drive the first rotating shaft 3 to rotate, the first rotating shaft 3 rotates to drive the vacuum chuck 5 to rotate, and then the first motor 4 is used to drive the first rotating shaft 3 to rotate intermittently, so that the glass panel on the vacuum chuck 5 is driven to rotate intermittently, the first rotating shaft 3 is driven to rotate intermittently to drive the glass panel on the vacuum chuck 5 to rotate intermittently and change detection positions continuously, and the glass panel is detected by the vision detection unit in 360° omnibearing vision defect detection.

[0049] The above examples are exemplary rather than limiting, and the technical solutions of the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application, and all technical solutions falling within the scope of the present application are encompassed in the present application.

Claims

1. A visual inspection device for automatic centering and ring inspection of glass panels, comprising a frame (1), characterized in that: A hollow cylinder (2) is rotatably provided on the frame (1); a first rotating shaft (3) rotatably provided on the frame (1) is movably inserted into the interior of the hollow cylinder (2); the first rotating shaft (3) is driven to rotate by a first driving source provided on the frame (1); a vacuum suction cup (5) for adsorbing and fixing the glass panel is provided on the first rotating shaft (3); A plurality of arc-shaped clamping plates (6) are provided on the outer peripheral side of the vacuum suction cup (5), and the plurality of arc-shaped clamping plates (6) are coordinated with the hollow cylinder (2) through a linkage structure. When the hollow cylinder (2) rotates clockwise or counterclockwise, the plurality of arc-shaped clamping plates (6) are synchronously driven to perform radial expansion or radial contraction movement. The hollow cylinder (2) is driven to rotate by a second driving source provided on the frame (1); A visual inspection unit for performing defect detection on the glass panel is provided on the frame (1) and above the first rotating shaft (3).

2. A visual inspection device for automatic centering and ring inspection of a glass panel according to claim 1, characterized in that: The first driving source comprises a first motor (4) arranged on the frame (1); the first rotating shaft (3) is mounted on the output end of the first motor (4) and is driven to rotate by the first motor (4).

3. The visual inspection device for automatic centering and ring inspection of a glass panel according to claim 1, characterized in that: A plurality of arc-shaped clamping plates (6) are circumferentially spaced and arranged on the outer peripheral side of the vacuum suction cup (5); the arc-shaped clamping plates (6) have a concave working surface; the geometric profile of the concave working surface is adapted to the outer circumferential surface of the glass panel; and the central axis of curvature of the concave working surface is coaxially arranged with the rotation axis of the vacuum suction cup (5).

4. The visual inspection device for automatic centering and ring inspection of a glass panel according to claim 1, characterized in that: The linkage structure comprises a fixed plate (10) arranged on the frame (1) and an annular plate (13) arranged on the fixed plate (10); a turntable (11) arranged on the hollow cylinder (2) is arranged on the fixed plate (10); a plurality of arc-shaped grooves (12) are provided on the turntable (11); a limit rod (14) is movably engaged in the arc-shaped grooves (12); a movable rod (15) is provided on the limit rod (14) and is arranged to pass through the annular plate (13); and the movable rod (15) is fixedly connected to the arc-shaped clamping plate (6).

5. The visual inspection device for automatic centering and ring inspection of glass panels according to claim 4, characterized in that: A plurality of arc-shaped grooves (12) are distributed circumferentially at equal angles on the turntable (11); the inner dimensions of the arc-shaped grooves (12) are adapted to the outer dimensions of the limiting rods (14); and the limiting rods (14) can slide inside the arc-shaped grooves (12).

6. The visual inspection device for automatic centering and ring inspection of a glass panel according to claim 4, characterized in that: The outer diameter of the turntable (11) is matched with the inner diameter of the annular plate (13), and the turntable (11) is movably connected to the inside of the annular plate (13). The annular plate (13) is provided with a through slot whose inner size is matched with the outer size of the movable rod (15), and the movable rod (15) is inserted into the through slot.

7. The visual inspection device for automatic centering and ring inspection of a glass panel according to claim 1, characterized in that: The second driving source comprises a first gear (7) and a second gear (8) rotatably arranged on the frame (1), the first gear (7) being arranged on the hollow cylinder (2), the first gear (7) being meshed with the second gear (8), a second motor (9) being arranged on the frame (1), the second gear (8) being mounted on the output shaft of the second motor (9) and being driven to rotate by the second motor (9).

8. The visual inspection device for automatic centering and ring inspection of a glass panel according to claim 1, characterized in that: The visual inspection unit comprises a first bracket (16) arranged on a frame (1), an industrial camera (19) being arranged on the first bracket (16), and the industrial camera (19) being driven to rise and fall by a third driving source arranged on the first bracket (16); The third driving source comprises a cylinder (17) arranged on the first bracket (16), an output end of the cylinder (17) is provided with a piston rod (18), and the industrial camera (19) is fixedly mounted on the piston rod (18).

9. The visual inspection device for automatic centering and ring inspection of glass panels according to claim 1, characterized in that: A fill light (21) is provided on the frame (1) and located between the vacuum suction cup (5) and the industrial camera (19); a second bracket (20) is provided on the frame (1); and the fill light (21) is provided on the second bracket (20).

10. A detection method of the visual inspection device for automatic centering and ring inspection of glass panels according to any one of claims 1 to 9, characterized in that: The following steps are included: S1, the glass panel to be inspected is transported to the top of the vacuum suction cup (5) and fixed by adsorption through the vacuum suction cup (5); S2, the second driving source drives the hollow cylinder (2) to rotate counterclockwise, synchronously drives the plurality of arc-shaped clamping plates (6) to perform radial contraction movement, automatically centers the synchronous clamping limit on the periphery of the glass panel, and makes the central axis of the glass panel coaxial with the rotation axis of the vacuum suction cup (5), and then the second driving source drives the hollow cylinder (2) to rotate clockwise, synchronously drives the plurality of arc-shaped clamping plates (6) to perform radial expansion movement to release the limit on the periphery of the glass panel; S3, the first driving source drives the first rotating shaft (3) to rotate intermittently, driving the glass panel on the vacuum suction cup (5) to rotate intermittently, and cooperates with the visual inspection unit to perform 360° visual defect inspection on the glass panel.

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