Glass plate detection device

Abstract

The embodiment of the utility model discloses a glass plate detection device, which comprises a rack, a detection device, a detection device and a control device, wherein a camera for shooting is suspended and fixedly arranged at the top of the rack; the light source assembly comprises a fan-shaped plate fixed at the bottom of the rack in a suspended manner, and a first light bar and a second light bar which are arranged in pairs and fixed on the outer side edge of the fan-shaped plate in a bilateral symmetry manner, the first light bar and the second light bar irradiate the horizontal plane where the glass plate to be detected is located, and a first preset included angle and a second preset included angle are formed between the first light bar and the horizontal plane respectively; light of the third light bar penetrates through the to-be-detected glass plate and irradiates the camera in a manner of facing the to-be-detected glass plate. Through the arrangement of the three kinds of light bars, the light bars can be lightened in sequence and irradiate the to-be-detected glass bottle at different angles, and meanwhile, the camera also acquires corresponding image data, so that all flaws of the to-be-detected glass bottle can be detected, and high-precision and high-efficiency detection of the flaws on the surface and in the glass bottle is realized.

Description

Technical Field

[0001] This utility model relates to the field of glass manufacturing and processing technology, and in particular to a glass plate testing device. Background Technology

[0002] In the glass manufacturing and processing industry, quality inspection of glass sheets is a crucial step. Various defects may occur during the production process, such as scratches, bubbles, cracks, and dents. These defects can severely affect the strength, transparency, and aesthetics of the glass. Traditional glass sheet inspection methods mainly rely on manual visual inspection, which is not only inefficient but also susceptible to human error, leading to inconsistent results.

[0003] With the development of automation technology, machine vision-based glass plate inspection systems have gradually become mainstream. However, existing inspection devices still have problems in terms of light source arrangement, device flexibility, and defect identification. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a glass plate detection device to overcome the shortcomings of existing glass plate detection devices in terms of light source arrangement, detection accuracy and system flexibility.

[0005] To address the aforementioned technical problems, this utility model provides a glass plate inspection device, comprising: a frame with a camera for taking pictures suspended at its top; a light source assembly including: a fan-shaped plate suspended at the bottom of the frame; a first light strip and a second light strip arranged in pairs and symmetrically fixed on the outer edges of the fan-shaped plate, the first and second light strips both illuminating the horizontal plane where the glass plate to be inspected is located, and forming a first predetermined angle and a second predetermined angle with the horizontal plane respectively; a third light strip suspended below the frame, whose light passes through the glass plate to be inspected and illuminates the camera directly; and a controller for controlling the first light strip, the second light strip, the third light strip, and the camera to operate in a predetermined sequence.

[0006] Furthermore, it also includes: a main frame, with the third lamp strip fixed on the main frame; a light-blocking plate for beam splitting according to imaging needs, which is adjustablely fixed on the main frame, the light-blocking plate including: a long strip-shaped substrate with waist-shaped holes at both ends; and a light-blocking strip that extends from one side edge of the substrate with gradually decreasing thickness.

[0007] Furthermore, the first predetermined included angle is 10° to 30°.

[0008] Furthermore, the second predetermined included angle is 40° to 70°.

[0009] Furthermore, the frame includes: a base, which is adjustablely fixed to the main frame along the moving direction of the glass plate to be tested; a frame body, which is adjustablely fixed to the base; a first connecting plate, which is adjustablely fixed to the top of the frame body; and a camera plate, which is adjustablely fixed to the first connecting plate along the moving direction perpendicular to the moving direction of the glass plate to be tested.

[0010] Furthermore, a stepped surface is provided on the camera plate, and a camera hole is provided on the stepped surface. The camera passes through the camera hole and is adjustablely fixed on the stepped surface by a fixing plate along the moving direction of the glass plate to be tested.

[0011] Furthermore, it also includes a second connecting plate, which includes: a first vertical plate, which is fixed to the inner side of the bottom of the frame in an adjustable manner through a waist-shaped hole; and a first horizontal plate, which extends horizontally from the bottom end of the first vertical plate and whose outer end face is fixed to the outer wall of the fan-shaped plate.

[0012] Furthermore, it also includes a third connecting plate, which includes: a second vertical plate, the inner side of which is fixed to the end faces of the first or second light strip; and a second horizontal plate, which extends horizontally from the middle of the second vertical plate and is curved to form an arc that matches the edge of the arc surface of the fan-shaped plate, and has an oblong hole thereon, and a screw passing through the oblong hole is screwed into the connecting hole opened on the edge of the arc surface of the fan-shaped plate.

[0013] Furthermore, both the frame and the camera plate adopt a hollow structure.

[0014] Furthermore, a vertical waist-shaped hole is provided in the middle of the bottom of the frame, and an observation hole is provided in the middle of the base corresponding to the waist-shaped hole.

[0015] This invention provides a glass plate inspection device. By arranging a first, second, and third light strip, the strips are illuminated sequentially at different angles to illuminate the glass plate under inspection. Simultaneously, a camera acquires corresponding image data. As the camera photographs the glass plate under inspection, the images captured overlap as the light sources illuminate one by one, allowing for the detection of all defects in the glass bottle. This achieves high-precision and high-efficiency detection of both surface and internal defects in the glass plate. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the main frame and the frame of this utility model embodiment.

[0017] Figure 2 This is a schematic diagram of the structure of the frame and light source assembly in an embodiment of this utility model.

[0018] Figure 3 yes Figure 2 A schematic diagram of the structure after removing the frame.

[0019] Figure 4This is a schematic diagram of the structure of the third light strip in this embodiment of the present invention.

[0020] Explanation of icon numbers

[0021] Rack 1 Camera 11 Base 12 Frame 13 First connecting plate 14 Camera board 15 Second connecting plate 16 Light source component 2 Sector plate 21 First light strip 22 Second light strip 23 Third light strip 24 Shade 241 Substrate 2411 Shading strip 2412 Third connecting plate 25 Main frame 3 Detailed Implementation

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0025] Please refer to Figures 1-4 The embodiments of this utility model are as follows: Example 1

[0026] This embodiment provides a glass plate inspection device, including a frame 1, a light source assembly 2, and a controller.

[0027] Frame 1: A camera 11 for shooting is suspended at the top and a fan-shaped plate 21 is suspended at the bottom of the frame 1.

[0028] The frame 1 is a trapezoidal structure that is narrower at the top and wider at the bottom. Its top is symmetrically arranged at both ends of the first connecting plate 14 and fixed by an "L"-shaped connector. The inner side of the bottom is connected to the fan-shaped plate 21 by a connector, and the outer side is fixed to the main frame 3 by a connector.

[0029] Light source assembly 2: The light source assembly 2 includes two symmetrical fan-shaped plates 21 and a first light strip 22 and a second light strip 23 located on the outer edge of the fan-shaped plates 21. The first light strip 22 and the second light strip 23 are distributed in a fan shape along the arc angle of the fan-shaped plates 21. Each of the first light strip 22 and the second light strip 23 includes two parallel light strips. The distance between the first light strips 22 is smaller than the distance between the second light strips 23, and the first light strip 22 is located above the second light strip 23. The first light strip 22 and the second light strip 23 are fixed at an angle, with their light strips facing the bottom of the frame 1, and illuminating the glass plate to be tested in the horizontal direction at a first predetermined angle and a second predetermined angle, respectively. This causes the light to form an intersecting detection area composed of two light spots on the glass plate to be tested. The first light strip 22 and the second light strip 23 illuminate at different angles to ensure that two illuminating areas can be formed on the glass plate to be tested. This allows the camera 11 to capture image information of two different areas on the glass plate to be tested from the same position and angle, thereby improving the detection accuracy.

[0030] A third light strip 24 is suspended below the frame 1. There is one third light strip 24. The light strip of the third light strip 24 faces the glass plate to be inspected and is suspended between the first light strip 22 and the second light strip 23. The light source of the third light strip 24 is supplemented so that the light source can cover the entire surface of the glass plate to be inspected, ensuring image clarity and improving the overall inspection effect.

[0031] The first light strip 22, the second light strip 23 and the third light strip 24 also include two fans disposed on the corresponding side of their light strips. The fans are symmetrically fixed at both ends of the light strips to dissipate heat from the light strips, prevent overheating from affecting the stability and lifespan of the light source, and ensure continuous and efficient operation.

[0032] Controller: The controller is electrically connected to the first light strip 22, the second light strip 23, the third light strip 24 and the camera 11, and controls their switching according to a predetermined sequence. The specific sequence is as follows: first, the first light strip 22 and the camera 11 are triggered to take pictures, then the second light strip 23 and the camera 11 are switched to take pictures, and finally the third light strip 24 and the camera 11 are activated to take pictures through light. This cycle is repeated to ensure that the image information of each area is fully captured, thereby improving the detection efficiency and accuracy. Example 2

[0033] Based on Embodiment 1, this embodiment further includes a main frame 3 and a light-shielding plate 241:

[0034] Main frame 3: The main frame 3 is a support frame for the assembly line conveyor mechanism. Its top surface is used to support the detection mechanism. The interior accommodates the assembly line conveyor belt and drive device. The third light strip 24 is fixed to the crossbeam inside the main frame 3 by an "L"-shaped connecting piece. The "L"-shaped connecting piece has multiple waist-shaped holes, which correspond to the positions of the crossbeam and the screw holes of the third light strip 24. The screws pass through the waist-shaped holes to connect with the crossbeam and the third light strip 24, so as to achieve flexible adjustment and stable fixation.

[0035] Shielding plate 241: A shielding plate 241 for beam splitting based on imaging is also installed on the third lamp strip 24. The shielding plate 241 includes a long strip substrate 2411 and a shielding strip 2412. The long strip substrate 2411 is elongated with waist-shaped holes at both ends, allowing for flexible adjustment of the substrate 2411 and ensuring that the shielding strip 2412 can be positioned according to actual needs, precisely controlling the light distribution and improving the stability and reliability of the detection system. The shielding strip 2412 is located on one side of the substrate 2411, extending obliquely from the top to the bottom of the substrate 2411, that is, extending from one edge of the substrate 2411 towards the glass plate. Its thickness gradually decreases with the extension direction, forming a wedge-shaped beam splitting structure to block stray light and guide the light from the third lamp strip 24 to penetrate the glass plate uniformly. Example 3

[0036] Based on Embodiment 1, this embodiment limits the first predetermined included angle to 10° to 30°. In specific implementation, by adjusting the installation angle of the first light strip 22, its light is made to illuminate the glass plate surface at a smaller tilt angle, prioritizing the detection of defects such as scratches and shallow bubbles. Preferably, the tilt angle of the first light strip 22 is set to 20°, and the angle is locked by the arc-shaped connecting structure at the edge of the fan-shaped plate 21. Example 4

[0037] Based on Example 1, this example limits the second predetermined included angle to 40° to 70°. In specific implementation, the second light strip 23 is installed at a larger tilt angle to enhance the imaging contrast of pits and cracks on the edge of the glass plate. Preferably, the tilt angle of the second light strip 23 is set to 55°, and the angle is adjusted by a rotatable connector to adapt to the glass inspection requirements of different surface roughnesses. Example 5

[0038] Based on Example 2, this example further optimizes the structure of rack 1:

[0039] Base 12: The base 12 has multiple waist-shaped holes with an "L"-shaped cross-section. One end is connected to the main frame 3 and the other end is connected to the frame body 13. It is slidably fixed to both sides of the main frame 3 by bolts along the direction of glass plate movement.

[0040] Frame 13: The frame 13 has several connecting holes at the top. The connecting holes at the bottom of the frame 13 are connected to the vertical slotted holes on the inner side of the base 12 by bolts, so that the frame 13 can move up and down in the slotted holes to assist in adjusting the detection height.

[0041] First connecting plate 14: The first connecting plate 14 is located at the top of the frame 13 and is connected to the frame 13 at a right angle. The first connecting plate 14 has multiple pairs of oblong holes at both ends, which are connected at a right angle by an "L"-shaped connecting piece. The side of the connecting piece with the oblong holes connects to the frame 13, and the side with the connecting holes connects to the first connecting plate 14. Bolts are used to fix the connecting holes and oblong holes, thereby achieving stable support and flexible adjustment of the camera 11. Second connecting plate 16 is located below the first connecting plate 14 and is arranged parallel to it.

[0042] Camera plate 15: The camera plate 15 is square, with oblong holes at its four corners for fixing it to the side of the first connecting plate 14 away from the light source assembly 2. These oblong holes are secured with screws, allowing the camera plate 15 to be adjusted in position along the moving direction of the glass plate to be inspected. Example 6

[0043] Based on Example 5, this example refines the camera 11 mounting structure:

[0044] Camera plate 15: A stepped surface is provided, and a camera 11 hole for mounting the camera 11 is provided on the stepped surface. The camera 11 hole is a circular hole with a diameter larger than the lens of the camera 11. The camera 11 passes through the camera 11 hole, and its lens is perpendicular to the glass plate to be inspected. The camera 11 base is fixed on the camera plate 15. The position of the waist-shaped hole of the camera plate 15 or the stepped surface is adjusted by bolts to ensure that the camera 11 can be finely adjusted in the camera 11 hole to expand the detection range and improve the detection accuracy. Example 7

[0045] Based on embodiment 5, this embodiment adds a second connecting plate 16:

[0046] The second connecting plate 16 includes a vertical plate and a horizontal plate. The vertical plate has an oblong hole in the height direction and is connected to the frame 13 by screws. One end of the horizontal plate is perpendicularly connected to the vertical plate, and the outer end face of the other end is connected to the outer wall of the fan-shaped plate 21. The vertical plate and the horizontal plate form an "L"-shaped right-angle connecting piece for connecting the mutually perpendicular frame 13 and fan-shaped plate 21. The height can be adjusted by the oblong hole on the vertical plate, thereby realizing the suspension support and height adjustment of the fan-shaped plate 21. Example 8

[0047] Based on embodiment 5, this embodiment adjusts the angle of the light strip via the third connecting plate 25:

[0048] Third connecting plate 25:

[0049] The device includes a second vertical plate and a second horizontal plate. The second vertical plate has two pairs of symmetrical screw holes, which are fixed to the two ends of the first lamp strip 22 and the second lamp strip 23 by screws. The second horizontal plate is perpendicular to the second vertical plate and extends from the center of the second vertical plate to the side edge of the fan-shaped plate 21. The second horizontal plate is curved and matches the curvature of the side edge of the fan-shaped plate 21. The second horizontal plate has an oblong hole along the curvature of the fan-shaped plate 21. The fan-shaped plate 21 has several connecting holes along the curvature. The second horizontal plate and the fan-shaped plate 21 are connected by screws. By connecting different connecting holes in the oblong hole with screws, the illumination angle can be adjusted step by step, thereby adjusting the angle and spacing of the first lamp strip 22 and the second lamp strip 23 to meet different detection requirements. Example 9

[0050] Based on Embodiment 5, both the frame 13 and the camera plate 15 in this embodiment adopt a hollow design. The purpose is to reduce the overall structural weight, facilitate observation of the internal component status, and ensure ease of installation and maintenance. The frame 13 is a trapezoidal structure that is wider at the top and narrower at the bottom. An isosceles trapezoidal hollow structure is carved between the connecting holes at the top and bottom. The hollow structure not only reduces the weight of the frame 13 but also improves the stability of the overall structure. Example 10

[0051] Based on embodiment 5, this embodiment opens symmetrical vertical waist-shaped holes in the middle of the bottom of the frame 13, and opens circular observation holes between the waist-shaped holes. The circular observation holes are opened with the same diameter at the corresponding base 12 position as circular observation holes. On the one hand, the overall weight is reduced while ensuring rigidity; on the other hand, after installation, the waist-shaped holes are aligned through the observation holes, which facilitates quick confirmation of the light source and shooting situation.

[0052] Working principle: The conveyor mechanism of the main frame 3 first transports the glass plate to be inspected to the light source assembly 2. The glass plate passes through the light source assembly 2 at a predetermined speed. Under the control of the controller, the first light bar 22 will light up two light bars. The first light bar 22 illuminates the glass plate to be inspected at a specific angle. At the same time, the camera 11 takes pictures of the glass plate to be inspected through the gap between the light bars. When the glass plate to be inspected has passed through part of the predetermined speed, the controller controls the second light bar 23 to light up and continue to illuminate the glass plate to be inspected. The camera 11 continues to take pictures. After the area illuminated by the second light bar 23 is completed, the third light bar 24 located in the middle of the conveyor mechanism lights up and illuminates vertically upward from the bottom of the glass plate to be inspected. The camera 11 continues to capture images and finally completes the inspection.

[0053] The first light strip 22 and the second light strip 23 form a shooting channel between their symmetrical pairs for the camera 11 to capture images. At the same time, the area illuminated by the third light strip 24 can be captured by the camera 11. The three light strips are lit in sequence, and the camera 11 collects the corresponding image data in sequence. The images collected by the camera 11 in each detection area overlap, thereby ensuring that each area can be fully detected, improving detection accuracy and efficiency.

[0054] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A glass plate testing device, comprising: A frame (1) with a camera (11) for taking pictures suspended on its top. The light source assembly (2) includes: a first light strip (22) and a second light strip (23) that are suspended and fixed to the bottom fan-shaped plate (21) of the frame (1), and are arranged in pairs and symmetrically fixed to the outer edge of the fan-shaped plate. The first light strip (22) and the second light strip (23) are both directed toward the horizontal plane where the glass plate to be tested is located, and are respectively at a first predetermined angle and a second predetermined angle with the horizontal plane. A third light strip (24) is suspended below the frame (1) and its light passes through the glass plate to be tested and is directed toward the camera (11). The controller is used to control the first light bar (22), the second light bar (23), the third light bar (24) and the camera (11) to work in a predetermined sequence.

2. The glass plate testing device as described in claim 1, characterized in that, Also includes: The main frame (3) and the third light strip (24) are fixed on the main frame (3); A light-shielding plate (241) for beam splitting according to imaging needs is tunably fixed on the main frame (3). The light-shielding plate (241) includes: A long strip-shaped substrate (2411) has waist-shaped holes at both ends; The light-shielding strip (2412) is formed by extending from one side edge of the substrate with a gradually decreasing thickness.

3. The glass plate testing device as described in claim 1, characterized in that, The first predetermined included angle is 10° to 30°.

4. The glass plate testing device as described in claim 1, characterized in that, The second predetermined included angle is 40° to 70°.

5. The glass plate testing device as described in claim 2, characterized in that, The rack (1) includes: The base (12) is adjustablely fixed on the main frame (3) along the moving direction of the glass plate to be tested; The frame (13) is fixedly mounted on the base (12) in an adjustable manner. The first connecting plate (14) is fixedly mounted on the top of the frame (13) in an adjustable manner. The camera plate (15) is adjustablely fixed on the first connecting plate (14) along the direction of movement perpendicular to the glass plate to be tested.

6. The glass plate testing device as described in claim 5, characterized in that, A step surface is provided on the camera plate (15), and a camera hole is provided on the step surface. The camera passes through the camera hole and is fixedly fixed on the step surface in an adjustable manner along the moving direction of the glass plate to be tested by a fixing plate.

7. The glass plate testing device as described in claim 5, characterized in that, It also includes a second connecting plate (16), which comprises: The first vertical plate is fixed to the inner side of the bottom of the frame (13) through the waist-shaped hole in an adjustable height; The first horizontal plate extends horizontally from the bottom of the first vertical plate and its outer end face is fixed on the outer wall of the fan-shaped plate (21).

8. The glass plate testing device as described in claim 5, characterized in that, It also includes a third connecting plate (25), which comprises: The second vertical plate is fixed on the end face of both ends of the first light strip (22) or the second light strip (23); The second horizontal plate extends horizontally from the middle of the second vertical plate and is curved to form an arc that matches the edge of the arc surface of the fan-shaped plate (21). A waist-shaped hole is provided on it, and a screw passing through the waist-shaped hole is screwed into the connecting hole opened on the edge of the arc surface of the fan-shaped plate (21).

9. The glass plate testing device as described in claim 5, characterized in that, Both the frame (13) and the camera plate (15) adopt a hollow structure.

10. The glass plate testing device as described in claim 5, characterized in that, A vertical waist-shaped hole is provided at the middle position of the bottom of the frame (13), and an observation hole is provided at the middle position of the base (12) corresponding to the waist-shaped hole.

Images