Mobile phone glass plate appearance defect detection system and detection method

Abstract

The invention relates to the technical field of defect detection, in particular to a mobile phone glass plate appearance defect detection system and method.The detection system comprises a rack, a control system, a tray, a conveying mechanism, a plurality of cameras and a plurality of light sources, and the conveying mechanism, the cameras and the light sources are in communication connection with the control system; the output end of the conveying mechanism is connected with a tray for placing a mobile phone glass plate; the plurality of light sources and the plurality of cameras are respectively arranged corresponding to the mobile phone glass plate and are used for shooting images of the mobile phone glass plate; the control system is used for detecting an image shot by the camera and displaying a detection result; the tray is provided with a detection area penetrating through the top and the bottom of the tray, the detection area is provided with a supporting part used for bearing a mobile phone glass plate, and the control system controls the acceleration of the tray to enable the supporting part and the mobile phone glass plate to generate relative displacement. Omnibearing scanning detection of the mobile phone glass plate can be realized, and the image quality and the detection speed are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of defect detection, and more particularly, to a mobile phone glass plate appearance defect detection system and method. Background Art

[0002] The appearance defects of mobile phone glass panels are distributed in 3D areas such as the glossy surface, frosted surface, edge arc surface, inner wall of the camera hole and its platform surface, as well as the inclined surfaces and frustum around the platform. Defect detection requires multi-angle and multi-directional use of transmitted light and reflected light imaging.

[0003] When current mobile phone glass plate inspection equipment is used, the part that supports the movement of the mobile phone glass plate enters the camera area together with the mobile phone glass plate. The camera and light source can only be on the same side of the conveyor belt. The camera can only obtain reflected light images but not transmitted light images. It cannot obtain 3D images from multiple angles and in all directions. In addition, the supporting part enters the image and becomes the image background, which interferes with image processing and recognition.

[0004] Existing technology can also use the gap between conveyor rollers or conveyor belts to form images, and light sources and cameras can be arranged above and below the glass. However, in this case, the camera and light source can only be installed in the imaging gap, and their installation angle and position are limited by the gap size, roller diameter, etc. When the glass passes through the gap between adjacent conveyor rollers, the surface friction difference and dimensional error, radial runout error, etc. of the conveyor rollers or conveyor belts on both sides can easily cause the glass to fluctuate or vibrate, greatly reducing the image quality, especially the high-gloss surface and 3D sensitive parts, which may cause misjudgment and missed detection. In order to reduce the fluctuation and vibration of the glass, the conveying speed usually needs to be reduced, resulting in slow detection speed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a mobile phone glass plate appearance defect detection system and detection method, which can realize all-round scanning detection of mobile phone glass plates, improve image quality and increase detection speed.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: to provide a mobile phone glass plate appearance defect detection system, including a frame, a control system, a tray, and a conveying mechanism, multiple cameras and multiple light sources respectively connected to the control system for communication, the conveying mechanism is installed on the frame, and the output end of the conveying mechanism is connected to the tray for placing the mobile phone glass plate; the multiple light sources and the multiple cameras are respectively arranged corresponding to the mobile phone glass plate, for capturing images of the mobile phone glass plate; the control system is used to detect the images captured by the cameras and display the detection results; the tray is provided with a detection area running through the top and bottom of the tray, and the detection area is provided with a support part for supporting the mobile phone glass plate, and the control system controls the acceleration of the tray to cause the support part and the mobile phone glass plate to produce relative displacement.

[0007] The mobile phone glass plate appearance defect detection system of the present invention, when in use, is placed on top of a support portion in a detection area, and a tray and the mobile phone glass plate thereon are conveyed by a conveying mechanism. Since the detection area runs through the top and bottom of the tray, cameras and light sources can be arranged correspondingly above, below, left, and right along the conveying path of the mobile phone glass plate, greatly expanding the installation freedom of the light sources and cameras, and can obtain transmission and reflection images of the mobile phone glass plate, enriching the image information. The light sources and cameras can be arranged at a high density, and the detection accuracy is improved through multi-point detection. During shooting, the control system can control the conveying mechanism to stably convey the tray and the mobile phone glass plate thereon, improving image quality, and can increase the detection speed by controlling the conveying speed. Since the contact area between the support portion and the mobile phone glass plate will cause a certain degree of obstruction to the mobile phone glass, the control system can also control the acceleration of the tray. Due to inertia, the mobile phone glass plate is displaced relative to the support portion in the detection area, changing the obstruction area of the mobile phone glass plate, and using the complementarity of multiple images to avoid imaging dead zones, it is possible to obtain transmission and reflection images of the mobile phone glass plate at multiple points, multiple angles, and in all directions. The acquired images are detected by the control system and the defect detection results are displayed.

[0008] Furthermore, the support portion includes at least two supporting rods, and the top surfaces of the two supporting rods are located in the same horizontal plane.

[0009] Furthermore, the axial direction of the supporting rod intersects with the conveying direction of the pallet at a preset angle.

[0010] Furthermore, a limit frame is provided on the top of the tray, and the detection area passes through the top of the limit frame in a vertical direction.

[0011] Furthermore, a limiting tip is provided on the inner wall of the limiting frame, and a space for the mobile phone glass plate to slide and translate is left between the limiting tip and the outer periphery of the mobile phone glass plate.

[0012] Furthermore, guide rails are respectively provided on both sides of the top of the frame, the conveying mechanism includes a driving mechanism and conveyor belts respectively installed on the two guide rails, the control system is communicatively connected with the driving mechanism, the output end of the driving mechanism is transmission-connected with the conveyor belt, the two ends of the pallet are respectively placed on the top of the two conveyor belts, and the driving mechanism drives the conveyor belt and the pallet to move along the guide rails.

[0013] Furthermore, the conveying mechanism includes a first conveyor line, a steering mechanism and a second conveyor line arranged in sequence along the frame. The first conveyor line, the steering mechanism and the second conveyor line are respectively communicated with the control system. The first conveyor line is used to convey the pallet along the length direction of the mobile phone glass plate. The steering mechanism is used to receive the pallet conveyed by the first conveyor line and convey the pallet to the second conveyor line. The second conveyor line is used to convey the pallet along the width direction of the mobile phone glass plate.

[0014] Furthermore, the tray has one, two or more detection areas.

[0015] Furthermore, the control system includes a master control computer, a controller and multiple sub-computers, the sub-computers, master control computer, conveying mechanism, camera and light source are respectively communicated with the controller, the sub-computer is used to detect the image taken by the camera, and the master control computer is used to fuse and calculate the detection data of multiple sub-computers and display the detection results.

[0016] Furthermore, the rack is also provided with a position sensor, and the controller is communicatively connected to the position sensor.

[0017] The present invention also provides a method for detecting appearance defects of mobile phone glass plates, which is applied to the above-mentioned mobile phone glass plate appearance defect detection system, comprising: placing the mobile phone glass plate on a support part in a detection area; a control system controlling a conveying mechanism so that the conveying mechanism drives a tray to complete a predetermined speed change movement; the mobile phone glass plate moves relative to the support part in the detection area to produce relative displacement, avoiding an imaging dead zone; during the movement of the tray, light sources from all directions illuminate the mobile phone glass plate, a camera acquires a reflected light image or a transmitted light image of the mobile phone glass plate, and the control system performs defect detection on the mobile phone glass plate based on the acquired image and displays the defect detection results.

[0018] The method for detecting appearance defects of mobile phone glass plates of the present invention greatly expands the installation freedom of light sources and cameras, enriches image information, and can arrange light sources and cameras at a high density, thereby improving detection accuracy through multi-point detection. It can also use the complementarity of multiple images to avoid imaging dead zones, and achieve multi-point, multi-angle, and omnidirectional acquisition of transmission and reflection images of mobile phone glass plates. The control system and conveying mechanism can smoothly convey the tray and mobile phone glass plate, thereby improving image quality and detection speed.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the control system can control the conveying mechanism to stably convey the tray and the mobile phone glass plate thereon, so that the mobile phone glass plate can perform planar motion, thereby improving the image quality, and the detection speed can be increased by increasing the conveying speed; the installation freedom of the light source and the camera is greatly expanded, the transmission and reflection images of the mobile phone glass plate can be obtained, the image information is enriched, the light source and the camera can be arranged at a high density, and the image quality and detection accuracy are improved through multi-point detection; the control system can be used to control the acceleration of the tray, so that the mobile phone glass plate is displaced relative to the support part in the detection area, and the complementarity of multiple images is used to avoid the imaging dead zone, so as to realize multi-point, multi-angle and all-round acquisition of the transmitted light and reflected light images of the mobile phone glass plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of a mobile phone glass plate appearance defect detection system according to an embodiment of the present invention; Figure 2 A schematic structural diagram of a tray in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the conveying mechanism along the "L"-shaped conveying tray in an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the conveying mechanism along the "I"-shaped conveying tray in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the conveying mechanism along the "U"-shaped conveying tray in an embodiment of the present invention.

[0021] In the accompanying drawings: 1-frame; 11-guide rail; 2-conveyor mechanism; 21-first conveyor line; 22-steering mechanism; 23-second conveyor line; 24-conveyor belt; 3-tray; 31-support rod; 32-limiting frame; 321-limiting top; 4-light source; 5-camera; 6-position sensor; 7-mobile phone glass plate; Figures 3 to 5 The arrow in the middle indicates the direction of pallet conveyance. DETAILED DESCRIPTION

[0022] The present invention is further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] Example 1 This embodiment is the first embodiment of the mobile phone glass plate appearance defect detection system. Figure 1 As shown, it includes a frame 1, a control system, a tray 3, and a conveying mechanism 2, multiple cameras 5 and multiple light sources 4 respectively connected to the control system for communication. The conveying mechanism 2 is installed on the frame 1, and the output end of the conveying mechanism 2 is connected to the tray 3 for placing the mobile phone glass plate 7; the multiple light sources 4 and the multiple cameras 5 are respectively set corresponding to the mobile phone glass plate 7, for capturing images of the mobile phone glass plate 7; the control system is used to detect the images captured by the camera 5 and display the detection results; the tray 3 is provided with a detection area running through the top and bottom of the tray 3, and the detection area is provided with a support part for supporting the mobile phone glass plate 7, and the control system controls the acceleration of the tray 3 to cause the support part and the mobile phone glass plate 7 to produce relative displacement.

[0025] When the above-mentioned mobile phone glass plate 7 appearance defect detection system is used, the mobile phone glass plate 7 is placed on the top of the support part in the detection area, and the tray 3 and the mobile phone glass plate 7 on it are conveyed by the conveying mechanism 2. Since the detection area runs through the top and bottom of the tray 3, the camera 5 and the light source 4 can be arranged correspondingly on the top, bottom, left and right of the conveying path of the mobile phone glass plate 7, which greatly expands the installation freedom of the light source 4 and the camera 5, can obtain the transmission and reflection images of the mobile phone glass plate 7, enriches the image information, can arrange the light source 4 and the camera 5 at a high density, compresses the imaging stroke and imaging time and space, occupies less space, and improves the detection accuracy through multi-point detection; when shooting, the control system can The conveying mechanism 2 is controlled to stably convey the tray 3 and the mobile phone glass plate 7 thereon, thereby improving the image quality and increasing the detection speed by increasing the conveying speed. Since the contact area between the support part and the mobile phone glass plate 7 will cause a certain amount of obstruction to the mobile phone glass, the control system can also control the acceleration of the tray 3. Due to inertia, the mobile phone glass plate 7 is displaced relative to the support part in the detection area, changing the obstruction area of the mobile phone glass plate 7. The complementarity of multiple images is used to avoid the imaging dead zone, and the transmission and reflection images of the mobile phone glass plate 7 are obtained from multiple points, multiple angles, and all directions. The acquired images are detected by using the control system and the defect detection results are displayed.

[0026] like Figure 2 As shown, the support portion includes at least two support rods 31, the top surfaces of which are located in the same horizontal plane. The at least two support rods 31 simultaneously support the mobile phone glass plate 7, ensuring smooth transportation of the mobile phone glass plate 7 and preventing the mobile phone glass plate 7 from tilting and falling from the inspection area during transportation.

[0027] The axial direction of the support rod 31 intersects the conveying direction of the tray 3. This ensures that when the control system controls the acceleration of the conveying mechanism 2 to convey the tray 3, the mobile phone glass plate 7 and the support rod 31 undergo relative displacement, and the portion of the mobile phone glass plate 7 blocked by the support rod 31 changes, so as to obtain an effective complementary image.

[0028] like Figure 2 As shown, a limit frame 32 is provided at the top of the tray 3, and the detection area vertically extends through the top of the limit frame 32. Specifically, the tray 3 is constructed of a high-strength lightweight metal or carbon fiber structure. A limit pin 321 is provided on the inner wall of the limit frame 32. Space is left between the limit pin 321 and the outer periphery of the mobile phone glass plate 7 for the mobile phone glass to slide and translate. This limits the range of movement of the mobile phone glass plate 7 within the limit frame 32 and reduces obstruction of the imaging portion of the mobile phone glass plate 7 by the limit frame 32.

[0029] like Figure 2 As shown, guide rails 11 are provided on both sides of the top of the frame 1. The conveying mechanism 2 includes a drive mechanism and conveyor belts 24 respectively mounted on the two guide rails 11. The control system is in communication with the drive mechanism, and the output end of the drive mechanism is in driving connection with the conveyor belts 24. The two ends of the tray 3 are placed on top of the two conveyor belts 24, and the drive mechanism drives the conveyor belts 24 and the tray 3 to move along the guide rails 11. During operation, the drive mechanism drives the conveyor belts 24 along the guide rails 11, smoothly conveying the tray 3 and the mobile phone glass plate 7 thereon, ensuring the image quality of the camera 5. The control system can control the acceleration of the conveyor belts 24 driven by the drive mechanism to cause relative displacement between the mobile phone glass plate 7 and the support portion of the tray 3, facilitating the camera 5 to obtain complementary images.

[0030] like Figure 1 、 Figures 3 to 5 As shown, the tray 3 is separated by two inspection zones. Mobile phone glass plates 7 can be placed in different inspection zones, and two mobile phone glass plates 7 can be transported and inspected simultaneously. High-speed, high-precision imaging is achieved in a single transport, and both mobile phone glass plates 7 can be inspected simultaneously, increasing inspection speed.

[0031] In this embodiment, the camera 5 can be a line scan camera or an area array camera; the light source 4 can be a linear LED light source, a line laser light source, a surface light source or a structured light source.

[0032] Example 2 This embodiment is the second embodiment of the mobile phone glass plate appearance defect detection system. This embodiment is similar to the first embodiment, except that Figures 3 to 5 As shown, the conveying mechanism 2 includes a first conveyor line 21, a steering mechanism 22 and a second conveyor line 23 arranged in sequence along the frame 1. The first conveyor line 21, the steering mechanism 22 and the second conveyor line 23 are respectively communicated with the control system. The first conveyor line 21 is used to convey the pallet 3 along the length direction of the mobile phone glass plate 7. The steering mechanism 22 is used to receive the pallet 3 conveyed by the first conveyor line 21 and convey the pallet 3 to the second conveyor line 23. The second conveyor line 23 is used to convey the pallet 3 along the width direction of the mobile phone glass plate 7.

[0033] Specifically, the first conveyor line 21, the steering mechanism 22 and the second conveyor line 23 are arranged in sequence to form an "L" shape, and the conveyor mechanism 2 conveys the tray 3 along the "L" shape. Figure 3 As shown, the first conveyor line 21 carries the tray 3 and completes the longitudinal scanning imaging movement at a predetermined acceleration, constant speed and deceleration. The steering mechanism 22 can transfer the tray 3 from the longitudinal scanning imaging movement to the transverse scanning imaging movement. During the conveying process, the mobile phone glass plate 7 realizes the overall translation movement. The second conveyor line 23 carries the tray 3 and then completes the transverse scanning imaging movement at a predetermined acceleration, constant speed and deceleration.

[0034] It should be noted that when the conveying mechanism 2 completes the scanning imaging detection work in a pass-through manner, the first conveying line 21, the steering mechanism 22 and the second conveying line 23 arranged in sequence can also form an "I" shape, and the conveying mechanism 2 conveys the tray 3 along the "I" shape, such as Figure 4 As shown, the first conveyor line 21 carries the tray 3 and completes the longitudinal scanning imaging movement at a predetermined acceleration, constant speed and deceleration. The steering mechanism 22 can rotate the tray 3 and the mobile phone glass plate 7 thereon by 90 degrees. The camera 5 and the light source 4 can complete the rotational scanning imaging during the rotation of the mobile phone glass plate 7. The second conveyor line 23 carries the tray 3 and completes the transverse scanning imaging movement at a predetermined acceleration, constant speed and deceleration.

[0035] It should be noted that the conveying mechanism 2 can also complete the scanning imaging detection work in a loop. At this time, the first conveying line 21, the steering mechanism 22 and the second conveying line 23 arranged in sequence can also form a "U" shape. The conveying mechanism 2 conveys the tray 3 along the "U" shape. Figure 5 As shown, the steering mechanism 22 rotates the tray 3 and the mobile phone glass plate 7 on it 90 degrees and translates them to the starting point of the second conveyor line 23. The camera 5 and light source 4 complete rotational and translational scanning and imaging during the rotation and translation of the mobile phone glass plate 7. The second conveyor line 23 carries the tray 3 and then completes the lateral scanning and imaging movement at predetermined acceleration, constant speed, and deceleration. The loop-shaped conveyor mechanism 2 facilitates the recovery and recycling of the tray 3.

[0036] Example 3 This third embodiment of a mobile phone glass panel appearance defect detection system is similar to the second embodiment, differing in that the control system includes a master computer, a controller, and multiple sub-computers. The sub-computers, master computer, conveyor mechanism 2, camera 5, and light source 4 are each connected to the controller. The sub-computers detect images captured by camera 5, and the master computer integrates and calculates the detection data from multiple sub-computers and displays the detection results. Specifically, the frame 1 is also equipped with position sensors 6, which are connected to the controller. Multiple position sensors 6 are distributed along the conveyor line. During implementation, the controller controls the conveying mechanism 2 to convey the tray 3 and the mobile phone glass plate 7 thereon at a preset speed. When the position sensor 6 detects that the mobile phone glass plate 7 has moved into place, it communicates with the controller, and the controller communicates with the corresponding sub-computer. The sub-computer drives the light source 4 at a predetermined angle and orientation through the controller to flash in sequence and illuminate the mobile phone glass plate 7. The camera 5 obtains the reflected light or transmitted light image of the mobile phone glass plate 7 from each preset orientation, and then sends the image to the corresponding sub-computer through the controller. Multiple sub-computers obtain and process the images of the mobile phone glass plate 7 at different positions in the detection area in a distributed and parallel manner, and then communicate with the main control computer through the controller. The main control computer uses the complementarity of multiple images to make comprehensive judgments, complete defect identification and display the defect detection results.

[0037] Example 4 This embodiment is an embodiment of a method for detecting appearance defects of a mobile phone glass plate, and is applied to the mobile phone glass plate appearance defect detection system of Example 1, Example 2 or Example 3, including: placing the mobile phone glass plate 7 on a support portion within a detection area; a control system controls the conveying mechanism 2 so that the conveying mechanism 2 drives the tray 3 to complete a predetermined variable speed movement; the mobile phone glass plate 7 moves relative to the support portion within the detection area to produce relative displacement, avoiding an imaging dead zone; during the movement of the tray 3, light sources 4 in various directions illuminate the mobile phone glass plate 7, and the camera 5 obtains a reflected light image or a transmitted light image of the mobile phone glass plate 7, and the control system performs defect detection on the mobile phone glass plate 7 based on the obtained image and displays the defect detection results.

[0038] The above-mentioned method for detecting appearance defects of the mobile phone glass plate 7 greatly expands the installation freedom of the light source 4 and the camera 5, enriches the image information, and can arrange the light source 4 and the camera 5 at a high density, thereby improving the detection accuracy through multi-point detection; and the complementarity of multiple images can be used to avoid the imaging dead zone, so as to realize multi-point, multi-angle and all-round acquisition of the transmission and reflection images of the mobile phone glass plate 7; the control system and the conveying mechanism 2 can smoothly convey the tray 3 and the mobile phone glass plate 7, thereby improving the image quality. Since the mobile phone glass plate 7 can be smoothly conveyed, the conveying speed can be controlled to increase the detection speed.

[0039] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A mobile phone glass plate appearance defect detection system, comprising a frame (1), a control system, a tray (3), and a conveying mechanism (2), a plurality of cameras (5), and a plurality of light sources (4) respectively connected to the control system for communication, wherein the conveying mechanism (2) is mounted on the frame (1), and an output end of the conveying mechanism (2) is connected to the tray (3) for placing a mobile phone glass plate (7); the plurality of light sources (4) and the plurality of cameras (5) are respectively arranged corresponding to the mobile phone glass plate (7) and are used to capture images of the mobile phone glass plate (7); the control system is used to detect the images captured by the cameras (5) and display the detection results; and the system is characterized in that: The tray (3) is provided with a detection area running through the top and bottom of the tray (3), the detection area is provided with a support portion for carrying the mobile phone glass plate (7), and the control system controls the acceleration of the tray (3) to cause relative displacement between the support portion and the mobile phone glass plate (7).

2. The mobile phone glass plate appearance defect detection system according to claim 1, characterized in that: The support portion comprises at least two supporting rods (31), and the top surfaces of the two supporting rods (31) are located in the same horizontal plane.

3. The mobile phone glass plate (7) appearance defect detection system according to claim 2, characterized in that: The axial direction of the supporting rod (31) intersects with the conveying direction of the tray (3) at a preset angle.

4. The mobile phone glass plate appearance defect detection system according to claim 1, characterized in that: A limiting frame (32) is provided on the top of the tray (3), and the detection area passes through the top of the limiting frame (32) in a vertical direction.

5. The mobile phone glass plate appearance defect detection system according to claim 4, characterized in that: The inner wall of the limiting frame (32) is provided with a limiting top (321), and a space for the mobile phone glass plate (7) to slide and translate is left between the limiting top (321) and the outer periphery of the mobile phone glass plate (7).

6. The mobile phone glass plate appearance defect detection system according to claim 1, characterized in that: Guide rails (11) are respectively provided on both sides of the top of the frame (1); the conveying mechanism (2) includes a driving mechanism and conveyor belts (24) respectively installed on the two guide rails (11); the control system is communicatively connected with the driving mechanism; the output end of the driving mechanism is transmission-connected with the conveyor belts (24); the two ends of the pallet (3) are respectively placed on the top of the two conveyor belts (24); the driving mechanism drives the conveyor belts (24) and the pallet (3) to move along the guide rails (11).

7. The mobile phone glass plate appearance defect detection system according to claim 1, characterized in that: The conveying mechanism (2) comprises a first conveying line (21), a steering mechanism (22) and a second conveying line (23) sequentially arranged along the frame (1); the first conveying line (21), the steering mechanism (22) and the second conveying line (23) are respectively connected to the control system for communication; the first conveying line (21) is used to convey the pallet (3) along the length direction of the mobile phone glass plate (7); the steering mechanism (22) is used to receive the pallet (3) conveyed by the first conveying line (21) and convey the pallet (3) to the second conveying line (23); and the second conveying line (23) is used to convey the pallet (3) along the width direction of the mobile phone glass plate (7).

8. The mobile phone glass plate appearance defect detection system according to any one of claims 1 to 7, characterized in that: The control system includes a master control computer, a controller, and a plurality of sub-computers. The sub-computers, the master control computer, the conveying mechanism (2), the camera (5), and the light source (4) are respectively connected to the controller for communication. The sub-computers are used to detect images captured by the camera (5). The master control computer is used to fuse and calculate detection data of the plurality of sub-computers and display the detection results.

9. The mobile phone glass plate appearance defect detection system according to claim 8, characterized in that: The frame (1) is further provided with a position sensor (6), and the controller is communicatively connected to the position sensor (6).

10. A method for detecting appearance defects of a mobile phone glass plate, applied to the mobile phone glass plate appearance defect detection system according to any one of claims 1 to 9, characterized in that: include: The mobile phone glass plate (7) is placed on a support portion in a detection area; the control system controls the conveying mechanism (2) so that the conveying mechanism (2) drives the tray (3) to complete a predetermined speed change movement; the mobile phone glass plate (7) moves relative to the support portion in the detection area to generate relative displacement, avoiding an imaging dead zone; during the movement of the tray (3), light sources (4) in various directions illuminate the mobile phone glass plate (7), the camera (5) obtains a reflected light image or a transmitted light image of the mobile phone glass plate (7), and the control system performs defect detection on the mobile phone glass plate (7) based on the obtained image and displays the defect detection result.

Images