Panel defect detection apparatus and panel defect detection device

Abstract

The application relates to a panel defect detection device and a panel defect detection equipment. The panel defect detection device comprises a machine table, a transfer mechanism and a detection mechanism. The machine table has a detection station. The transfer mechanism is arranged on the machine table and can reciprocate along a first horizontal direction between opposite ends of the machine table. The detection mechanism comprises a detection assembly arranged above and / or below the detection station. The detection assembly comprises a plurality of detection cameras arranged along a second horizontal direction perpendicular to the first horizontal direction and capable of being transversely moved together along the second horizontal direction. After the panel is photographed and detected by the plurality of detection cameras when passing through the detection station, the plurality of detection cameras can be transversely moved by a distance along the second horizontal direction. When the panel returns to pass through the detection station again, the panel can be photographed and detected again by the detection cameras on the positions that are not detected before, so that the complete appearance of the panel can be photographed without increasing the number of detection cameras, and the production and manufacturing cost of the panel defect detection equipment is effectively saved.

Description

Technical Field

[0001] This application relates to the field of visual inspection technology, and in particular to a panel defect detection device and panel defect detection equipment. Background Technology

[0002] With the rapid development of 3C electronic products, especially the rapid advancements in mobile phone design and manufacturing technologies, glass panels, with their transparent and smooth properties, are widely used in the display components of 3C electronic products. The appearance quality of the glass panel directly affects the quality of electronic products, and as consumers' demands for electronic product quality increase, the requirements for defect detection of glass panels are also rising.

[0003] In some existing inspection equipment, line scan cameras are typically used to scan large glass panels to complete defect detection. However, because some glass panels are large, and the field of view of a single line scan camera is smaller than the physical size of the camera, even if multiple line scan cameras are arranged close together, the complete shape of the glass panel cannot be captured. To capture a complete image of the glass panel, additional line scan cameras are needed, which increases the manufacturing cost of the inspection equipment. Utility Model Content

[0004] Therefore, it is necessary to address the problem that existing panel defect detection equipment can only capture the complete morphology of large-size glass panels by increasing the number of cameras when performing defect detection on large-size glass panels. In this regard, a panel defect detection device and a panel defect detection equipment including the panel defect detection device are provided to solve the above-mentioned problems.

[0005] According to one aspect of this application, a panel defect detection device is provided, comprising:

[0006] The machine tool has a testing station;

[0007] A transfer mechanism is provided on the machine platform, and the transfer mechanism is configured to carry the panel back and forth between opposite ends of the machine platform along a first horizontal direction;

[0008] The inspection mechanism includes an inspection component disposed above and / or below the inspection station; the inspection component includes a plurality of inspection cameras arranged along a second horizontal direction perpendicular to the first horizontal direction and capable of moving laterally together along the second horizontal direction.

[0009] In one embodiment, the transfer mechanism includes a carrier plate slidably disposed on the machine base, the carrier plate having a bearing surface for bearing the panel;

[0010] The carrier plate is provided with a vacuum generator, and the bearing surface is provided with vacuum adsorption holes corresponding to the vacuum generator; and / or a pressure head is movably connected to the carrier plate, the pressure head being movable relative to the carrier plate so as to abut the panel against the bearing surface or detach the panel from the panel.

[0011] In one embodiment, the pressure head is connected to a connecting rod that is rotatably connected to the carrier plate. A first drive source is connected to the carrier plate, and the connecting rod is connected to the output end of the first drive source. The output end of the first drive source can drive the connecting rod and the pressure head to rotate together about an axis extending along the first horizontal direction.

[0012] In one embodiment, the carrier plate is provided with a second drive source, and the first drive source and the connecting rod are disposed on the output end of the second drive source. The output end of the second drive source can drive the first drive source, the connecting rod and the pressure head to move together along the second horizontal direction.

[0013] In one embodiment, the carrier plate has two plates, which are symmetrically arranged at intervals along the second horizontal direction and can move synchronously along the first horizontal direction. Each carrier plate is movably provided with a plurality of regular blocks. Each regular block is located on one side of the bearing surface and can move along the second horizontal direction to approach or move away from the corresponding regular block on the other carrier plate.

[0014] In one embodiment, the machine base is provided with multiple air flotation bars, each of which has an air hole, and all the air flotation bars are located between two carrier plates.

[0015] In one embodiment, the machine tool further has a re-judgment station arranged adjacent to the detection station, and a re-judgment mechanism is provided above and / or below the re-judgment station. The re-judgment mechanism has a re-inspection camera, which is used to re-inspect the panel after the panel has been detected by the detection mechanism.

[0016] In one embodiment, the re-judgment station is further provided with a lifting mechanism having a lifting plate that can rise vertically to lift the panel and detach it from the transfer mechanism when the panel arrives at the re-judgment station, or the lifting plate can descend vertically to place the panel on the transfer mechanism.

[0017] According to another aspect of this application, a panel defect detection device is provided, including a loading and unloading device and a panel defect detection device as described in any of the above embodiments. The loading and unloading device includes a frame and a first conveying mechanism disposed on the frame. The frame has adjacent panel storage positions and loading and unloading stations. One end of the panel defect detection device is connected to the loading and unloading device and is located at the loading and unloading station. The first conveying mechanism has a conveying component that is movable relative to the frame to move back and forth between the panel storage position and the loading and unloading station.

[0018] In one embodiment, the conveying assembly includes a mounting plate and a plurality of suction cups disposed on the mounting plate, the mounting plate being movable in a vertical direction and rotatable about a central axis extending in the vertical direction; all the suction cups include contact suction cups and non-contact suction cups, at least some of the contact suction cups being disposed at the four corners of the mounting plate, and the non-contact suction cups being disposed in the area enclosed by the four corners of the mounting plate.

[0019] The aforementioned panel defect detection device and equipment enable the transfer mechanism to carry the panel back and forth between the two ends of the machine in a first horizontal direction, and enable multiple detection cameras of the detection mechanism to move laterally in a second horizontal direction perpendicular to the first horizontal direction. After the panel is photographed and detected by multiple detection cameras at the detection station, the multiple detection cameras can move laterally a certain distance in the second horizontal direction. In this way, when the panel returns to the detection station and passes through again, it can be photographed and detected again by multiple detection cameras for parts that were not detected in the previous detection. Thus, the complete shape of the panel can be captured without increasing the number of detection cameras, thereby effectively saving the production and manufacturing costs of the panel defect detection equipment. Attached Figure Description

[0020] Figure 1 This is a perspective view of a panel defect detection device provided in an embodiment of this application.

[0021] Figure 2 for Figure 1 An enlarged schematic diagram of region A in the middle.

[0022] Figure 3 This is a perspective view of the transport component in a panel defect detection device provided in an embodiment of this application.

[0023] Figure 4 This is a bottom view of the transport component in a panel defect detection device provided in an embodiment of this application.

[0024] Figure 5 This is a perspective view of a panel defect detection device provided in an embodiment of this application.

[0025] Figure 6 This is a front view of a panel defect detection device provided in an embodiment of this application.

[0026] Figure 7 This is a perspective view of the first preliminary inspection component in a panel defect detection device provided in an embodiment of this application.

[0027] Figure 8 This is a perspective view of the second preliminary inspection component in a panel defect detection device provided in an embodiment of this application.

[0028] Figure 9 This is a three-dimensional schematic diagram of the re-judgment mechanism in a panel defect detection device provided in an embodiment of this application.

[0029] Figure 10 This is a three-dimensional schematic diagram of the transfer mechanism in a panel defect detection device provided in an embodiment of this application.

[0030] Figure 11 for Figure 10 A magnified view of region B in the middle.

[0031] Figure 12 for Figure 11 A magnified view of region C in the middle.

[0032] Figure 13 This is a three-dimensional schematic diagram of the lifting mechanism in a panel defect detection device provided in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Panel defect detection equipment; 100. Loading and unloading device; 101. Panel storage position; 101a. Panel storage position to be tested; 101b. Panel storage position already tested; 102. Loading and unloading station; 103. Pad material placement position; 110. Frame; 120. First handling mechanism; 121. Gantry frame; 122. Handling components; 1221. Lifting module; 1222. Mounting plate; 1222a. Fixed plate; 1222b. Movable plate; 1223. Suction cup; 1223a. Contact suction cup; 1223b. Non-contact suction cup; 1224. Angle adjustment module; 130. Second handling mechanism; 200. Panel defect detection device; 201. Detection station; 202. Re-judgment station; 210. Machine base; 220. Transfer mechanism; 221. Linear module; 222. Carrier plate; 2221. Bearing surface; 2221a, vacuum adsorption hole; 223, vacuum generator; 224, clamping assembly; 2241, pressure head; 2242, connecting rod; 2242a, oblong hole; 2243, first drive source; 2244, second drive source; 2245, connecting block; 225, leveling block; 226, third drive source; 230, detection mechanism; 231, detection assembly; 2311, first preliminary inspection assembly; 2311a, first preliminary inspection camera; 2311b, first transverse movement module; 2312, second preliminary inspection assembly; 2312a, second preliminary inspection camera; 2312b, second transverse movement module; 240, re-judgment mechanism; 241, re-inspection camera; 242, third transverse movement module; 250, air flotation vibration damping seat; 260, air flotation bar; 270, lifting mechanism; 271, lifting plate; 272, support column. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0041] One embodiment of this application provides a panel defect detection device and a panel defect detection equipment including the panel defect detection device, used to detect the surface quality of large-size flat panel products, so as to ensure that the products have reliable quality and prevent defective products from flowing into downstream processes and causing greater waste.

[0042] The structure of the panel defect detection device in this application will be described below using a large-sized glass panel as an example. It is understood that in other embodiments, the panel defect detection device of this application is not limited to glass panels, but can also detect other large-sized plate-shaped products, such as various substrates, panels, etc., which are not limited here.

[0043] See Figure 1 , Figure 1 A schematic diagram of a panel defect detection device 10 according to an embodiment of this application is shown. The panel defect detection device 10 provided in the embodiment of this application includes a loading / unloading device 100 and a panel defect detection device 200 arranged adjacent to each other; wherein, the panel defect detection device 200 is used to perform defect detection on the panel, the loading / unloading device 100 is used to transport the panel to be tested onto the panel defect detection device 200 for testing by the panel defect detection device 200 to complete the loading, and after the testing is completed, the tested panel is moved out of the panel defect detection device 200 to complete the unloading.

[0044] Specifically, such as Figure 1As shown, the loading and unloading device 100 includes a frame 110 and a first conveying mechanism 120 disposed on the frame 110. The frame 110 has a panel storage position 101 and a loading and unloading station 102 arranged adjacent to each other. One end of the panel defect detection device 200 is connected to the loading and unloading device 100 and is located at the loading and unloading station 102. The first conveying mechanism 120 can transport the panel back and forth between the panel storage position 101 and the loading and unloading station 102. More specifically, the panel storage position 101 includes a panel storage position to be tested 101a and a panel storage position to be tested 101b. When loading, the first conveying mechanism 120 transports the panel from the panel storage position to be tested 101a to the loading and unloading station 102 and places it on the panel defect detection device 200. When unloading, the first conveying mechanism 120 transports the tested panel from the loading and unloading station 102 to the panel storage position to be tested 101b.

[0045] In the embodiments of this application, the panels are stacked in piles. To prevent the panels from rubbing against each other and scratching them, padding material is placed between adjacent panels during storage to separate them. Therefore, as... Figure 1 As shown, the frame 110 also has a pad material placement position 103, and the loading and unloading device 100 also includes a second conveying mechanism 130, which is used to convey pad material back and forth between the pad material placement position 103 and the panel storage position 101.

[0046] Thus, during loading, after the first transport mechanism 120 transports a panel to be tested from the panel storage location 101a to the loading / unloading station 102, the second transport mechanism 130 must transport a pad material used to separate two adjacent panels from the panel storage location 101a to the pad material placement location 103 before the first transport mechanism 120 can transport the next panel to be tested from the panel storage location 101a to the loading / unloading station 102. During unloading, after the first transport mechanism 120 transports a tested panel from the loading / unloading station 102 to the tested panel storage location 101b, the second transport mechanism 130 must transport a pad material from the pad material placement location 103 to the tested panel storage location 101b before the first transport mechanism 120 can transport the next tested panel from the loading / unloading station 102 to the tested panel storage location 101b.

[0047] Furthermore, in one embodiment, such as Figure 2As shown, the first conveying mechanism 120 includes a gantry frame 121 and a conveying assembly 122. The gantry frame 121 is movably mounted on the frame 110 along a first horizontal direction (X direction shown in the figure), and the conveying assembly 122 is movably mounted on the gantry frame 121 along a second horizontal direction perpendicular to the first horizontal direction (Y direction shown in the figure). As the gantry frame 121 moves relative to the frame 110 along the first horizontal direction, the conveying assembly 122 moves relative to the gantry frame 121 along the second horizontal direction, so that the conveying assembly 122 can move relative to the frame 110 to travel back and forth between the panel storage position 101 and the loading / unloading station 102.

[0048] Regarding the structure of the conveying component 122, in one embodiment, as follows: Figure 3 As shown, the conveying assembly 122 includes a lifting module 1221, a mounting plate 1222, and multiple suction cups 1223. The lifting module 1221 is mounted on the gantry frame 121, the mounting plate 1222 is connected to the lifting module 1221, and the multiple suction cups 1223 are located on one side of the mounting plate 1222. Driven by the lifting module 1221, the mounting plate 1222 can move vertically, allowing the conveying assembly 122 to approach the panel and use the suction cups 1223 to adhere to the panel.

[0049] Furthermore, since the panels are stacked in layers, the placement of each panel in the panel storage position 101 will inevitably be slightly different. Therefore, in order to ensure that the conveying component 122 can pick up the panel in the correct posture, the lifting module 1221 is provided with an angle adjustment module 1224. The mounting plate 1222 is also connected to the angle adjustment module 1224. Driven by the angle adjustment module 1224, the mounting plate 1222 can rotate around a central axis extending in the vertical direction, so that when the placement angle of the panel is deviated, the mounting plate 1222 can pick up the panel in the correct posture.

[0050] Considering that different panel sizes will vary, such as Figure 4 As shown, the mounting plate 1222 includes a fixed plate 1222a and a movable plate 1222b. In the embodiment shown in the figure, the movable plate 1222b is movably mounted on the fixed plate 1222a so that it can move relative to the fixed plate 1222a. Both the movable plate 1222b and the fixed plate 1222a are equipped with suction cups 1223. By moving the movable plate 1222b relative to the fixed plate 1222a, the distance between some suction cups 1223 and other suction cups 1223 can be varied, thereby enabling it to pick up panels of different sizes.

[0051] It is worth noting that in some cases, it is necessary to minimize contact with the panel when adsorbing it, especially in some cases where contact with the middle part of the panel is not allowed. Therefore, in some embodiments, all suction cups 1223 include contact suction cups 1223a and non-contact suction cups 1223b, from Figure 4 As can be seen, the contact suction cup 1223a is disposed around the perimeter of the mounting plate 1222, and the non-contact suction cup 1223b is disposed within the area enclosed by the perimeter of the mounting plate 1222. The contact suction cup 1223a is preferably an accordion suction cup 1223. The reason for choosing an accordion suction cup 1223 is that it has a certain elasticity, allowing for elastic contact between the suction cup 1223 and the panel during adsorption, thus avoiding damage to the panel. The non-contact suction cup 1223b is preferably a Bernoulli suction cup 1223, which utilizes Bernoulli's principle to adsorb without contacting the panel. The specific mechanism of Bernoulli's principle is existing technology and will not be elaborated here. As can be seen, by using both contact suction cup 1223a and non-contact suction cup 1223b simultaneously, contact with the panel can be reduced while still allowing the suction cup 1223 to adhere. Furthermore, since the distance between the panel and the non-contact suction cup 1223b cannot be guaranteed to be fixed when only the non-contact suction cup 1223b is used to pick up the panel, the contact suction cup 1223a can be used to support the four edges of the panel, thereby ensuring that the distance between the panel and the non-contact suction cup 1223b is fixed.

[0052] It is understandable that contact suction cups 1223a can be set only at the four corners of the mounting plate 1222, and non-contact suction cups 1223b can be set in the area enclosed by the four corners of the mounting plate 1222. The specific settings can be made according to the actual situation, and no limitation is made here.

[0053] Furthermore, the structure of the second transport mechanism 130 can be exactly the same as that of the first transport mechanism 120, and will not be described in detail here. Of course, the structures of the first transport mechanism 120 and the second transport mechanism 130 are not limited to the structures shown in the embodiment in the figure, but can also be multi-arm robotic arms, etc., and will not be limited here.

[0054] See Figure 5 and Figure 6 , Figure 5 A perspective view of a panel defect detection device 200 in one embodiment is shown. Figure 6A front view of a panel defect detection device 200 in one embodiment is shown. In this embodiment, the panel defect detection device 200 includes a machine base 210, a transfer mechanism 220, a detection mechanism 230, and a re-judgment mechanism 240. One end of the machine base 210 is connected to the loading and unloading device 100, and the machine base 210 has a detection station 201 and a re-judgment station 202 arranged adjacent to each other along a first horizontal direction. The transfer mechanism 220 is disposed on the machine base 210 and is used to carry the panel and move it along the first horizontal direction to pass through the detection station 201 and the re-judgment station 202. The detection mechanism 230 is disposed at the detection station 201, and the re-judgment mechanism 240 is disposed at the re-judgment station 202. The detection mechanism 230 is used to perform defect detection on the surface of the panel, and the re-judgment mechanism 240 is used to perform depth detection on the panel after the detection mechanism 230 has completed the detection, and to identify the detection results of the detection mechanism 230 to reconfirm whether there are defects on the panel surface, so as to ensure the accuracy of the detection.

[0055] Specifically, such as Figure 5 and Figure 6 As shown, the inspection mechanism 230 includes an inspection component 231 disposed above and / or below the inspection station 201. The inspection component 231 includes a plurality of inspection cameras arranged along a second horizontal direction. More specifically, in the embodiment shown in the figure, the inspection component 231 includes a first preliminary inspection component 2311 and a second preliminary inspection component 2312. The first preliminary inspection component 2311 is disposed above the inspection station 201, and the second preliminary inspection component 2312 is disposed below the inspection station 201, as shown. Figure 7 and Figure 8 As shown, both the first preliminary inspection component 2311 and the second preliminary inspection component 2312 include multiple inspection cameras arranged along a second horizontal direction. The inspection camera of the first preliminary inspection component 2311 is defined as the first preliminary inspection camera 2311a, and the inspection camera of the second preliminary inspection component 2312 is defined as the second preliminary inspection camera 2312a. The first preliminary inspection camera 2311a is used to perform image inspection on the upper surface of the panel, and the second preliminary inspection camera 2312a is used to perform image inspection on the lower surface of the panel. Exemplarily, the first preliminary inspection camera 2311a and the second preliminary inspection camera 2312a are line scan cameras based on 2D imaging.

[0056] However, as described in the background section, some panels are large in size, and the field of view of a single camera is smaller than the physical size of a single line scan camera. This means that even if multiple cameras are arranged close together, the complete shape of the panel cannot be captured. If the panel is to be captured completely, more cameras are needed, which increases the manufacturing cost of the inspection equipment.

[0057] Therefore, to solve this problem, in the embodiments of this application, the transfer mechanism 220 is configured to carry the panel back and forth between the opposite ends of the machine tool 210 along a first horizontal direction, and a plurality of detection cameras arranged along a second horizontal direction are movably mounted on a transverse module extending along the second horizontal direction, so that the plurality of detection cameras arranged along the second horizontal direction can move laterally together along the second horizontal direction. For example, in Figure 7 In one embodiment, a plurality of first preliminary inspection cameras 2311a arranged along a second horizontal direction are mounted on a first lateral movement module 2311b extending along the second horizontal direction; similarly, as Figure 8 As shown, multiple second preliminary inspection cameras 2312a arranged along the second horizontal direction are mounted on a second lateral movement module 2312b extending along the second horizontal direction, so that multiple first preliminary inspection cameras 2311a and multiple second preliminary inspection cameras 2312a can all move laterally along the second horizontal direction.

[0058] Thus, through the above configuration, after the panel is photographed and inspected by multiple first preliminary inspection cameras 2311a and multiple second preliminary inspection cameras 2312a at the inspection station 201, the multiple first preliminary inspection cameras 2311a and multiple second preliminary inspection cameras 2312a can move laterally a certain distance along the second horizontal direction. When the panel returns to the inspection station 201 again, it can be photographed again by the multiple first preliminary inspection cameras 2311a and multiple second preliminary inspection cameras 2312a to detect parts that were not detected in the previous inspection. Therefore, the complete shape of the panel can be captured without increasing the number of inspection cameras, effectively saving the manufacturing cost of the panel defect detection equipment 10. Furthermore, it can be seen that because the transfer mechanism 220 can carry the panel back and forth along the first horizontal direction between the opposite ends of the machine 210, the loading and unloading are both at the same end of the panel defect detection device 200. There is no need to set up loading and unloading devices at opposite ends of the panel defect detection device 200, thereby reducing the overall size of the panel defect detection equipment 10 and significantly saving the equipment's footprint.

[0059] For the review agency 240, such as Figure 9As shown, the re-inspection mechanism 240 includes a re-inspection camera 241 and a third transverse moving module 242. The re-inspection camera 241 is movably mounted on the third transverse moving module 242 and can move relative to the third transverse moving module 242 along the second horizontal direction. The number of re-inspection cameras 241 can be one or more, which is not limited here. In the figure, as an example, there is only one re-inspection camera 241, and the re-inspection camera 241 is a 3D imaging-based camera. During the photographic inspection process, it takes pictures and measures from the thickness direction of the panel to detect defects inside the panel. Therefore, the detection accuracy and requirements are higher than those of the first initial inspection camera 2311a and the second initial inspection camera 2312a. Of course, the re-inspection camera 241 can also be other types of cameras, which is also not limited here.

[0060] Furthermore, to improve the accuracy of the photo-detection, at least a portion of the material of the machine 210 can be a high-density, high-quality vibration-resistant material, such as marble. Because marble is relatively heavy, it will not vibrate when the equipment experiences slight vibrations, thus effectively eliminating these vibrations and preventing vibrations in the first initial inspection camera 2311a, the second initial inspection camera 2312a, and the re-inspection camera 241. Further, see [reference needed]. Figure 5 and Figure 6 Multiple air-float vibration damping seats 250 can also be installed at the bottom of the machine 210. By utilizing the counterweight of marble and the synergistic effect of air-float vibration damping, the equipment can achieve the corresponding vibration reduction level, thereby further reducing the shaking of the inspection camera and the re-inspection camera 241.

[0061] It should be noted that in the embodiments of this application, only the detection mechanism 230 may be set without the re-judgment mechanism 240, and there is no specific limitation on the number of detection components 231 in the detection mechanism 230. They may be set only above the detection station 201 or only below the detection station 201. The re-judgment mechanism 240 may also be set above the re-judgment station 202, or both above and below the re-judgment station 202 may be provided with the re-judgment mechanism 240. It can be set as needed.

[0062] See Figure 10 , Figure 10 A schematic diagram of a transfer mechanism 220 according to one embodiment is shown. In this embodiment, the transfer mechanism 220 includes a linear module 221 and a carrier plate 222 for carrying a panel, wherein the combination... Figure 5 As shown, the linear module 221 is mounted on the machine base 210 and extends along the first horizontal direction. The carrier plate 222 is slidably mounted on the linear module 221, so that the carrier plate 222 is slidably mounted on the machine base 210 through the linear module 221. Under the drive of the linear module 221, the carrier plate 222 can move along the first horizontal direction to carry the panel back and forth between the two ends of the machine base 210.

[0063] exist Figure 10 In the embodiment, there are two linear modules 221, which are arranged parallel to each other along a second horizontal direction to form a dual-drive module. There are also two carrier plates 222, each slidably mounted on a corresponding linear module 221, so that the two carrier plates 222 are also symmetrically arranged along the second horizontal direction. Driven by the two linear modules 221, the two carrier plates 222 can move synchronously along a first horizontal direction. Thus, when the panel size is large, the two carrier plates 222 can respectively support the opposite edges of the panel, thereby jointly supporting the panel for movement.

[0064] In a preferred embodiment, such as Figure 5 As shown, the machine tool 210 is equipped with multiple air floats 260, each air float 260 having an air hole. All air floats 260 are located between two carrier plates 222. When a panel is supported on the carrier plate 222, the air floats 260 can blow air towards the panel through the air holes, so that the blown air can support the middle of the panel, preventing the middle of the panel from collapsing, ensuring the flatness of the panel, and avoiding the impact of unevenness on the accuracy of the test.

[0065] Furthermore, in order to fix the panel to the carrier plate 222 and prevent the panel from moving freely on the carrier plate 222 or falling off the carrier plate 222, such as... Figure 11 As shown, the carrier plate 222 has a bearing surface 2221 for bearing the panel, and a vacuum generator 223 is provided on the carrier plate 222. A vacuum adsorption hole 2221a corresponding to the vacuum generator 223 is opened on the bearing surface 2221. By drawing a vacuum, the edge of the carrier plate 222 is adsorbed and attached to the bearing surface 2221.

[0066] Optionally, the transfer mechanism 220 further includes a clamping assembly 224, which includes a pressure head 2241 movably connected to the carrier plate 222. The pressure head 2241 can move relative to the carrier plate 222 to abut and fix the edge of the panel to the bearing surface 2221 or detach it from the panel. This allows the panel to be more firmly fixed to the carrier plate 222 by means of vacuum adsorption, so as to avoid displacement of the panel during the detection process, thereby avoiding deviation of the detection results and improving the accuracy and reliability of the detection.

[0067] In one specific embodiment, please refer to [link / reference]. Figure 11The clamping assembly 224 further includes a first drive source 2243 and a connecting rod 2242. The first drive source 2243 is connected to the carrier plate 222. One end of the connecting rod 2242 is connected to the output end of the first drive source 2243, and the connecting rod 2242 is rotatably connected to the carrier plate 222. The pressure head 2241 is connected to the end of the connecting rod 2242 away from the first drive source 2243. Driven by the first drive source 2243, the output end of the first drive source 2243 can push the end of the connecting rod 2242 to rotate relative to the carrier plate 222 about an axis extending in a first horizontal direction, so that the pressure head 2241 can also rotate about the axis, thereby realizing up and down movement to clamp the panel or disengage from the panel.

[0068] In a more specific implementation, such as Figure 12 As shown, the connecting rod 2242 has an oblong hole 2242a that is inclined relative to the horizontal plane. The output end of the first drive source 2243 is movably limited in the oblong hole 2242a, and the output end of the first drive source 2243 moves along the second horizontal direction so that the output end of the first drive source 2243 can abut against the hole wall of the oblong hole 2242a, thereby converting the horizontal motion into the rotational motion of the connecting rod 2242.

[0069] It should be noted that, since the pressure head 2241 is located above the bearing surface 2221, during loading or unloading, in order to ensure that the conveying assembly 122 and the pressure head 2241 avoid each other, it is preferable to refer to [reference needed]. Figure 11 The carrier plate 222 is also provided with a second drive source 2244. The first drive source 2243 and the connecting rod 2242 are connected to the output end of the second drive source 2244. Specifically, the output end of the second drive source 2244 is connected to a connecting block 2245. The first drive source 2243 and the connecting rod 2242 are disposed on the connecting block 2245. The connecting rod 2242 is rotatably connected to the connecting block 2245 so as to be rotatably connected to the carrier plate 222 through the connecting block 2245. The second drive source 2244 can drive its own output end to move along the second horizontal direction, thereby driving the first drive source 2243, the connecting rod 2242 and the pressure head 2241 to move as a whole along the second horizontal direction to avoid the conveying assembly 122. Thus, when loading or unloading is required, the second drive source 2244 drives the first drive source 2243, connecting rod 2242 and pressure head 2241 to move backward a distance along the second horizontal direction, which can avoid the conveying component 122 and ensure that the loading or unloading of the conveying component 122 is not affected. After loading or unloading is completed, the second drive source 2244 drives the first drive source 2243, connecting rod 2242 and pressure head 2241 to move forward a distance along the second horizontal direction, which can make the pressure head 2241 reposition above the bearing surface 2221, thereby pressing the panel.

[0070] Furthermore, after the panel is placed on the support surface 2221, since the panel may not be positioned correctly, in order to straighten the panel, as a further improvement based on the above embodiment, each carrier plate 222 may also be movably provided with a plurality of straightening blocks 225 and a third driving source 226. Each straightening block 225 is located on one side of the support surface 2221 and connected to the output end of the third driving source 226. Under the drive of the third driving source 226, each straightening block 225 can move along the second horizontal direction to approach or move away from the corresponding straightening block 225 on another carrier plate 222. When the straightening blocks 225 of the two carrier plates 222 approach each other, the straightening blocks 225 can touch the edge of the panel placed on the support surface 2221, thereby correcting the position of the panel on the carrier plate 222 and making the panel in a straightened state.

[0071] Additionally, it should be noted that, as mentioned earlier, the detection requirements and accuracy of the re-inspection camera 241 are higher than those of the first initial inspection camera 2311a and the second initial inspection camera 2312a. Therefore, during re-inspection, the panel must be kept completely still without any shaking, as shaking will affect the detection results. However, when the panel is located at the re-judgment station 202, the air float 260 will vibrate to some extent when blowing air. To ensure that the panel is both level and avoids shaking, as follows... Figure 5 and Figure 6 As shown, the re-judgment station 202 is also equipped with a lifting mechanism 270, such as... Figure 13 As shown, the lifting mechanism 270 has a lifting plate 271, which can rise vertically to lift the panel and detach it from the carrier plate 222 when the panel reaches the re-judgment station 202, or the lifting plate 271 can descend vertically to place the panel on the carrier plate 222. When the lifting plate 271 lifts the panel, the panel is a considerable distance from the air float 260, so it will not be affected by the air blowing and will remain horizontal. Of course, when the lifting plate 271 lifts the panel, the air float 260 can also be controlled to stop blowing air to completely avoid the airflow causing the panel to shake.

[0072] In some cases, when the lifting mechanism 270 lifts the panel, there is a requirement that it should not have excessive contact with the panel to avoid scratching or contaminating the panel surface. Therefore, in one embodiment, please refer to [the relevant documentation / reference needed]. Figure 13The lifting plate 271 has multiple support columns 272 on one side for contacting the panel, and the lifting plate 271 is located below the air float 260. Thus, during upward lifting, the support columns 272 can pass through the gap between adjacent air floats 260 and protrude from the air float 260, allowing the panel to be lifted with minimal contact with the panel; during downward lifting, the support columns 272 can also pass through the gap between adjacent air floats 260 and be located below the air float 260, allowing the panel to be placed back on the carrier plate 222. Preferably, the support columns 272 can be made of anti-static PEK material to remove static electricity from the panel and prevent electrostatic discharge damage.

[0073] The panel defect detection device 10 provided in this application has the following working process:

[0074] In the first step, the transport component 122 of the first transport mechanism 120 picks up the panel to be tested from the panel storage position 101a, transfers the panel to be tested to the loading and unloading station 102, and places the panel on the carrier plate 222 of the transfer mechanism 220.

[0075] The second step is to use the leveling block 225 to level the position of the panel on the carrier plate 222, and then use vacuum adsorption and pressure head 2241 to fix the panel on the carrier plate 222.

[0076] In the third step, the linear module 221 drives the carrier plate 222 to move the panel along the first horizontal direction past the inspection station 201. The first preliminary inspection camera 2311a and the second preliminary inspection camera 2312a respectively perform preliminary defect inspection on the upper and lower surfaces of the panel. However, at this time, due to the limited field of view of the first preliminary inspection camera 2311a and the second preliminary inspection camera 2312a, only a part of the panel can be photographed for inspection.

[0077] In the fourth step, when the carrier plate 222 moves the panel to one end of the machine 210 away from the loading and unloading station 102, the linear module 221 drives the carrier plate 222 back along the first horizontal direction. At this time, it will pass through the inspection station 201 again. The first initial inspection camera 2311a and the second initial inspection camera 2312a move laterally a distance along the second horizontal direction to take pictures of the remaining area of ​​the panel (i.e. the area that was not detected in the previous inspection). At this time, the initial inspection of all areas of the panel is completed.

[0078] In the fifth step, the carrier plate 222 continues to move the panel toward the loading and unloading station 102. At this time, it will pass through the re-inspection station 202. When it reaches the re-inspection station 202, the lifting mechanism 270 lifts the panel upward, so that the panel is separated from the carrier plate 222. At the same time, the air float 260 stops blowing air, and the re-inspection camera re-inspects the panel. After the re-inspection is completed, the lifting mechanism 270 lowers the panel, so that the panel falls back onto the carrier plate 222, and at the same time fixes the panel back onto the carrier plate 222.

[0079] In the sixth step, the carrier board 222 continues to move the panel and return to the loading and unloading station 102. The conveying mechanism transports the tested panel from the loading and unloading station 102 to the tested panel storage station 101b, and the entire process ends. Then, the previous process is repeated.

[0080] It should be noted that the panel defect detection device 10 provided in this application may also be without the loading and unloading device 100, and only the panel defect detection device 200 needs to be set. There is no limitation on this. Of course, setting the loading and unloading device 100 can improve the overall automation level of the equipment, which is obviously the best embodiment.

[0081] Therefore, the panel defect detection device 10 provided in the embodiments of this application has a high degree of automation, can perform comprehensive detection of the panel, and has a compact structure and small footprint, which can well meet the detection needs while saving production and manufacturing costs.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments 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.

[0083] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A panel defect detection apparatus characterized by comprising: include: The machine tool (210) has a testing station (201); A transfer mechanism (220) is provided on the machine base (210), the transfer mechanism (220) being configured to carry the panel back and forth along a first horizontal direction between opposite ends of the machine base (210); The inspection mechanism (230) includes an inspection component (231) disposed above and / or below the inspection station (201); the inspection component (231) includes a plurality of inspection cameras arranged along a second horizontal direction perpendicular to the first horizontal direction and capable of moving laterally together along the second horizontal direction.

2. The panel defect detection apparatus according to claim 1, characterized by The transfer mechanism (220) includes a carrier plate (222) slidably disposed on the machine base (210), the carrier plate (222) having a bearing surface (2221) for bearing the panel; The carrier plate (222) is provided with a vacuum generator (223), and the bearing surface (2221) is provided with a vacuum adsorption hole (2221a) corresponding to the vacuum generator (223); and / or the carrier plate (222) is movably connected with a pressure head (2241), the pressure head (2241) being movable relative to the carrier plate (222) so as to abut the panel against the bearing surface (2221) or detach the panel.

3. The panel defect detection apparatus according to claim 2, characterized by The pressure head (2241) is connected to a connecting rod (2242) that is rotatably connected to the carrier plate (222). A first drive source (2243) is connected to the carrier plate (222). The connecting rod (2242) is connected to the output end of the first drive source (2243). The output end of the first drive source (2243) can drive the connecting rod (2242) and the pressure head (2241) to rotate together about an axis extending along the first horizontal direction.

4. The panel defect detection apparatus according to claim 3, characterized by The carrier plate (222) is provided with a second drive source (2244), the first drive source (2243) and the connecting rod (2242) are disposed on the output end of the second drive source (2244), and the output end of the second drive source (2244) can drive the first drive source (2243), the connecting rod (2242) and the pressure head (2241) to move together along the second horizontal direction.

5. The panel defect detection apparatus according to claim 2, characterized by The carrier plate (222) has two pieces, which are symmetrically arranged at intervals along the second horizontal direction and can move synchronously along the first horizontal direction. Each carrier plate (222) is movably provided with a plurality of regular blocks (225). Each regular block (225) is located on one side of the bearing surface (2221) and can move along the second horizontal direction to get closer to or away from the corresponding regular block (225) on the other carrier plate (222).

6. The panel defect detection device according to claim 5, characterized in that, The machine base (210) is provided with multiple air flotation bars (260), each of the air flotation bars (260) has an air hole, and all the air flotation bars (260) are located between the two carrier plates (222).

7. The panel defect detection device according to claim 1, characterized in that, The machine (210) also has a re-judgment station (202) adjacent to the detection station (201). A re-judgment mechanism (240) is provided above and / or below the re-judgment station (202). The re-judgment mechanism (240) has a re-inspection camera (241). The re-inspection camera (241) is used to re-inspect the panel after the panel has been detected by the detection mechanism (230).

8. The panel defect detection device according to claim 7, characterized in that, The re-judgment station (202) is also provided with a lifting mechanism (270), which has a lifting plate (271) that can rise vertically to lift the panel and detach it from the transfer mechanism (220) when the panel arrives at the re-judgment station (202), or the lifting plate (271) can descend vertically to place the panel on the transfer mechanism (220).

9. A panel defect detection device, characterized in that, The device includes a loading / unloading device (100) and a panel defect detection device (200) as described in any one of claims 1-8. The loading / unloading device (100) includes a frame (110) and a first conveying mechanism (120) disposed on the frame (110). The frame (110) has a panel storage position (101) and a loading / unloading station (102) disposed adjacently. One end of the panel defect detection device (200) is connected to the loading / unloading device (100) and is located at the loading / unloading station (102). The first conveying mechanism (120) has a conveying component (122) that is movable relative to the frame (110) to move back and forth between the panel storage position (101) and the loading / unloading station (102).

10. The panel defect detection equipment according to claim 9, characterized in that, The conveying assembly (122) includes a mounting plate (1222) and a plurality of suction cups (1223) disposed on the mounting plate (1222). The mounting plate (1222) is movable in a vertical direction and rotatable about a central axis extending in the vertical direction. All the suction cups (1223) include contact suction cups (1223a) and non-contact suction cups (1223b). At least some of the contact suction cups (1223a) are disposed at the four corners of the mounting plate (1222), and the non-contact suction cups (1223b) are disposed in the area enclosed by the four corners of the mounting plate (1222).

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