Blind hole light leakage detection equipment and detection method

Abstract

The present invention discloses a blind hole light leakage detection device and detection method, which are used to detect the blind holes of the screen, including: a loading module; a bearing module, including a rotating disk rotating in a circumferential direction and a plurality of adsorption platforms fixed to the rotating disk, the loading module is used to transport the screen to the adsorption platform, the adsorption platform is used to adsorb and fix the screen; a correction module is used to correct the position of the screen on the adsorption platform; a detection module, including an upper shooting component and a lower shooting component relative to each other, the adsorption platform is located between the upper shooting component and the lower shooting component, the upper shooting component is used to detect the upper side of the blind hole of the corrected screen, and the lower shooting component is used to detect the lower side of the blind hole of the corrected screen; a unloading module is used to sort and unload the screen after detection by the detection module. The present invention solves the problem that the detection efficiency of the screen blind hole is low, and the position of the screen to be detected cannot be automatically corrected, and detection errors are prone to occur.

Description

Technical Field

[0001] The present invention relates to the field of screen detection technology, and in particular to a blind hole light leakage detection device and a detection method. Background Art

[0002] With the continuous development of display screen technology, its high resolution, small size and low power consumption have gradually become the key points to improve the mobile phone usage experience. In the process of using the display screen, it is sometimes necessary to dig a hole in the screen to meet the requirements of mobile phones and other devices. For example, digging a hole in the mobile phone screen and placing the front camera of the mobile phone under the hole in the screen not only increases the utilization rate of the screen but also does not affect the use of the camera. However, the screen is usually cut to make a hole, which will cause light leakage on the inner wall of the hole. If light leakage detection is not performed, it will affect people's usage experience.

[0003] The existing detection device uses a camera to take a picture of the blind hole, and then determines whether the screen is leaking light through image processing. When the camera takes a picture of the blind hole of the screen to be inspected, it is usually necessary to aim the camera at the position of the blind hole and take multiple pictures, and the shooting angle needs to be continuously adjusted during the shooting process to ensure that all positions of the blind hole can be photographed. However, the existing detection device continuously adjusts the angle during detection, which is not only inefficient, but also fails to automatically correct the position of the screen to be inspected, which is prone to detection errors. Summary of the invention

[0004] The main purpose of the present invention is to provide a blind hole light leakage detection device and a detection method, aiming to solve the problem that the existing detection device has low detection efficiency and cannot automatically correct the position of the screen to be inspected, which is prone to detection errors.

[0005] To achieve the above object, the present invention provides a blind hole light leakage detection device for detecting the blind hole of a screen, comprising:

[0006] Feeding module;

[0007] The bearing module comprises a rotating disk which rotates in the circumferential direction and a plurality of adsorption platforms fixed to the rotating disk, wherein the plurality of adsorption platforms are arranged at intervals along the circumference of the rotating disk, the feeding module is used to transport the screen to the adsorption platforms, and the adsorption platforms are used to adsorb and fix the screen;

[0008] A correction module, located at a next station of the feeding module and opposite to the adsorption platform, the correction module is used to correct the position of the screen on the adsorption platform;

[0009] The detection module comprises an upper shooting assembly and a lower shooting assembly which are opposite to each other, the adsorption platform is located between the upper shooting assembly and the lower shooting assembly, the upper shooting assembly is used to detect the upper side of the blind hole of the calibrated screen, and the lower shooting assembly is used to detect the lower side of the blind hole of the calibrated screen;

[0010] A material unloading module, used for sorting and unloading the screens after being detected by the detection module;

[0011] The feeding module comprises a feeding belt, a transfer platform and a first feeding transporter, wherein the feeding belt is adjacent to the transfer platform and transports the screen, the first feeding transporter transports the screen to the transfer platform, and the transfer platform is used to preliminarily correct the position of the screen;

[0012] The loading module also includes a second loading hand and a CCD positioning component. The second loading hand is used to transport the screen from the transfer platform to the adsorption platform. The CCD positioning component includes a product positioning CCD and a fixture positioning CCD. The product positioning CCD is arranged below the moving path of the second loading hand and takes a picture upward to determine the position coordinates of the screen. The fixture positioning CCD is arranged above the adsorption platform and takes a picture downward to determine the position coordinates of the loading point on the adsorption platform, so as to calculate the coordinate difference between the screen and the loading point on the adsorption platform.

[0013] Optionally, the transfer platform includes a vacuum suction plate and a first positioning cylinder, the vacuum suction plate adsorbs the screen, the first positioning cylinder includes a first X-direction cylinder and a first Y-direction cylinder, the first X-direction cylinder pushes the screen to a correction position along the X-direction, and the first Y-direction cylinder pushes the screen to a correction position along the Y-direction.

[0014] Optionally, the loading belt includes a feeding end and a picking end, the feeding end is for placing a screen on the loading belt, the picking end is provided with a second positioning cylinder and a blocking block for blocking the screen, the blocking block is provided with a positioning optical fiber, the second positioning cylinder cooperates with the positioning optical fiber and pushes the screen to the picking position of the first loading handle.

[0015] Optionally, the correction module includes a third positioning cylinder and a third lifting cylinder, the third lifting cylinder is connected to the third positioning cylinder and drives the third positioning cylinder to move up and down, and the third positioning cylinder pushes the screen on the adsorption platform to adjust along the X and Y directions.

[0016] Optionally, the correction module further includes a barcode scanning camera, which is located on the upper side of the adsorption platform and scans the screen.

[0017] Optionally, the upper shooting assembly includes an upper mounting platform and four upper detection cameras, the positions of the four upper detection cameras are opposite to each other, the adsorption platform is located below the center positions of the four upper detection cameras, and the upper detection cameras are rotatably connected to the upper mounting platform to switch the angle of irradiating the blind hole of the screen;

[0018] The lower shooting assembly is located below the upper shooting assembly, and the lower shooting assembly includes a lower mounting platform and four lower detection cameras. The positions of the four lower detection cameras are opposite to each other, and the adsorption platform is located above the center positions of the four lower detection cameras. The lower detection cameras are rotatably connected to the lower mounting platform to switch the angle of irradiating the blind hole of the screen.

[0019] Optionally, the detection module also includes a shading glue detection component for detecting light leakage of the screen shading glue, the shading glue detection component includes a mounting bracket and a shading glue detection camera mounted on the mounting bracket, three shading glue detection cameras are arranged vertically, the irradiation light of the shading glue detection camera located in the middle is in the same plane as the screen, and the shading glue detection cameras located at the upper and lower parts are rotatably connected relative to the mounting bracket.

[0020] A detection method, using the above-mentioned blind hole light leakage detection device, comprises the following steps:

[0021] The loading module transports the screen to the adsorption platform;

[0022] The adsorption platform moves to the position of the correction module, and the correction module corrects the position of the screen on the adsorption platform;

[0023] The adsorption platform continues to move to the position of the detection module. The upper and lower shooting components simultaneously shoot the upper and lower sides of the screen blind hole and read the pictures taken to detect and compare the screen blind hole area framed in the picture. If the blind hole area of ​​the screen is a black area with uniform contrast, it is qualified. If the blind hole area of ​​the screen has white spots, it is unqualified.

[0024] After the shooting and testing is completed, the unloading module sorts and unloads qualified screens and unqualified screens according to the screen detection results.

[0025] The beneficial effects of the present invention are: improving the structure of the original screen blind hole detection device, improving the efficiency and accuracy of screen detection, loading through a loading module, a plurality of adsorption platforms are arranged on the turntable, each time the turntable rotates a product position, multiple adsorption platforms are sequentially loaded and detected, the correction module corrects the position of the screen, and ensures that when the detection module is detecting, the blind hole of each screen is located at the same position, and there is no need to adjust the detection angle of the detection module, thereby improving the detection speed, the detection module includes an upper shooting component and a lower shooting component that are opposite to each other, and the adsorption platform is located in the middle of the upper shooting component and the lower shooting component, so that the upper shooting component and the lower shooting component respectively take pictures and detect the upper and lower sides of the blind hole of the screen, thereby solving the problem that when the blind hole light leakage area is only located on one side, the shooting component cannot capture or the imaging effect is not obvious, thereby improving the accuracy of the screen blind hole light leakage detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the blind hole light leakage detection device of the present invention;

[0028] Figure 2 It is a schematic diagram of the exploded structure of the blind hole light leakage detection device of the present invention;

[0029] Figure 3 It is a schematic diagram of the top view of the structure of the blind hole light leakage detection device of the present invention;

[0030] Figure 4 It is a schematic diagram of the overall structure of the feeding belt of the present invention;

[0031] Figure 5 It is a schematic diagram of the overall structure of the transfer platform of the present invention;

[0032] Figure 6 It is a schematic diagram of the overall structure of the first loading and handling arm of the present invention;

[0033] Figure 7 It is a schematic diagram of the overall structure of the second loading and handling arm of the present invention;

[0034] Figure 8 The overall structure diagram of the positioning CCD of the product of the present invention;

[0035] Fig. 9 This is a schematic diagram of the overall structure of the fixture positioning CCD of the present invention;

[0036] Fig.10 It is a schematic diagram of the overall structure of the load-bearing module of the present invention;

[0037] Fig.11 It is a schematic diagram of the overall structure of the correction module of the present invention;

[0038] Fig.12 It is a schematic diagram of the overall structure of the shooting assembly of the present invention;

[0039] Fig.13 It is a schematic diagram of the overall structure of the shooting assembly of the present invention;

[0040] Fig.14 It is a schematic diagram of the overall structure of the sunscreen glue detection assembly of the present invention;

[0041] Fig.15 It is a schematic diagram of the overall structure of the blanking module of the present invention;

[0042] Description of labels:

[0043] 1. Feeding module; 11. Feeding belt; 111. Second positioning cylinder; 112. Stop block; 12. Transfer platform; 121. First positioning cylinder; 122. Vacuum suction plate; 13. First feeding handling hand; 131. First driving member; 132. First lifting cylinder; 133. First adsorption member; 14. Second feeding handling hand; 141. Second driving member; 142. Second lifting cylinder; 143. Second adsorption member; 15. CCD positioning assembly; 151. Product positioning CCD; 1511. Product visual light source; 1512. Product visual lens; 1513. Product visual camera; 152. Fixture positioning CCD; 1521. Fixture visual light source; 1522. Fixture visual lens; 1523. Fixture visual camera; 1524. Moving module;

[0044] 2. Bearing module; 21. Turntable; 211. DD motor; 212. Electric slip ring; 22. Adsorption platform;

[0045] 3. Calibration module; 31. Third positioning cylinder; 32. Third lifting cylinder; 33. Support frame; 34. Scanning camera;

[0046] 4. Detection module; 41. Upper shooting assembly; 411. Upper detection camera; 412. Upper mounting platform; 413. Upper rotating member; 414. Upper moving assembly; 42. Lower shooting assembly; 421. Lower detection camera; 422. Lower mounting platform; 423. Lower rotating member; 424. Lower moving assembly; 43. Shading glue detection assembly; 431. Mounting bracket; 432. Shading glue detection camera; 433. Third moving assembly; 434. Third rotating member;

[0047] 5. Unloading module; 51. Unloading handling hand; 52. OK belt; 53. NG belt;

[0048] 6. Screen;

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0053] One embodiment of the present invention provides a blind hole light leakage detection device for detecting blind holes of a screen, referring to Figures 1 to 15 ,include:

[0054] Feeding module 1;

[0055] The carrying module 2 includes a rotating disk 21 and a plurality of adsorption platforms 22 fixed to the rotating disk 21. The plurality of adsorption platforms 22 are arranged at intervals along the circumference of the rotating disk 21. The feeding module 1 is used to transport the screen 6 to the adsorption platforms 22. The adsorption platforms 22 are used to adsorb and fix the screen 6.

[0056] A correction module 3 is located at the next station of the feeding module 1 and is opposite to the adsorption platform 22. The correction module 3 is used to correct the position of the screen 6 on the adsorption platform 22;

[0057] The detection module 4 includes an upper shooting component 41 and a lower shooting component 42 which are opposite to each other, and the adsorption platform 22 is located between the upper shooting component 41 and the lower shooting component 42. The upper shooting component 41 is used to detect the upper side of the blind hole of the calibrated screen 6, and the lower shooting component 42 is used to detect the lower side of the blind hole of the calibrated screen 6;

[0058] The unloading module 5 is used for sorting and unloading the screens 6 after being detected by the detection module 4 .

[0059] refer to Figure 1 and Figure 2 The present embodiment improves the structure of the original blind hole detection device of the screen 6, improves the efficiency and accuracy of the screen 6 detection, and loads the material through the loading module 1. A plurality of adsorption platforms 22 are arranged on the turntable 21. The turntable 21 rotates a product position each time, so that the plurality of adsorption platforms 22 load and detect in turn. The correction module 3 corrects the position of the screen 6, and ensures that when the detection module 4 detects, the blind holes of each screen 6 are located at the same position, and there is no need to adjust the detection angle of the detection module 4, thereby improving the detection speed. The detection module 4 includes an upper shooting component 41 and a lower shooting component 42 which are opposite to each other. The adsorption platform 22 is located between the upper shooting component 41 and the lower shooting component 42, so that the upper shooting component 41 and the lower shooting component 42 respectively take photos and detect the upper and lower sides of the blind hole of the screen 6, thereby solving the problem that when the blind hole light leakage area is only located on one side, the shooting component cannot take pictures or the imaging effect is not obvious, thereby improving the accuracy of the blind hole light leakage detection of the screen 6. Specifically, the loading module 1 loads each screen 6 to be inspected to the same loading position, the turntable 21 rotates one product position each time and drives each adsorption platform 22 to move to the loading position in turn, the adsorption platform 22 adsorbs and fixes the screen 6, and under the rotation of the turntable 21, the adsorption platform 22 rotates to the correction module 3 for position correction, thereby ensuring that the position of each screen 6 on the adsorption platform 22 is the same, the adsorption platform 22 continues to rotate to the position of the detection module 4 and performs upper and lower side detection of the blind hole, thereby ensuring that light leakage on any side of the blind hole of the screen 6 can be detected, thereby improving the detection accuracy of the equipment, and the screen 6 that has been inspected continues to move to the next product position, and according to the detection result of the screen 6, the unloading module 5 sorts and unloads the inspected screen 6.

[0060] refer to Fig.10In this embodiment, the adsorption platform 22 is provided with a plurality of adsorption holes and a vacuum detection switch. When the screen 6 is prevented from being on the adsorption platform 22, the screen 6 covers the adsorption holes, and the vacuum detection switch controls the opening of the vacuum pumping, so that the screen 6 is vacuum adsorbed on the adsorption platform 22. The blind hole light leakage detection device controls the operation of each module by setting a PLC. The vacuum detection switch and the PLC The turntable 21 is connected to the port of the adsorption platform 22. When the vacuum detection switch detects the vacuum between the screen 6 and the adsorption platform 22, an electrical signal is sent to the PLC, so that the PLC can determine whether the adsorption platform 22 picks up the screen 6. When the screen 6 is accidentally detached from the adsorption platform 22, the vacuum detection switch detects that the vacuum state disappears and sends an electrical signal to the PLC. The PLC determines that the screen 6 is accidentally detached and sends a signal reminder. The turntable 21 includes a DD motor 211 and an electric slip ring 212. Each adsorption platform 22 is separated by a product position. The DD motor 211 drives the adsorption platform 22 to rotate. The electric slip ring 212 can transmit electrical energy to each adsorption platform 22, so that the adsorption platform 22 can receive electrical energy and realize the vacuum adsorption function while continuously rotating. The electric slip ring 212 can realize signal transmission with the PLC, so that the PLC controls the DD motor 211 to rotate one product position each time, so that the adsorption platform 22 moves more accurately.

[0061] Further, refer to Figures 3 to 9 The loading module 1 includes a loading belt 11, a transfer platform 12 and a first loading handling hand 13. The loading belt 11 is adjacent to the transfer platform 12 and conveys the screen 6. The first loading handling hand 13 carries the screen 6 to the transfer platform 12. The transfer platform 12 is provided with a first positioning cylinder 121 for correcting the position of the screen 6. The feeding belt 11 is used to convey the screen to be inspected 6. The feeding module 1 is provided with a motor on the lower side of the feeding belt 11. After the upstream carrier moves the screen to be inspected 6 to the feeding belt 11, the motor drives the feeding belt 11 to rotate. The screen to be inspected 6 is driven by the feeding belt 11 to move to the material picking position of the first feeding carrier 13. The first feeding carrier 13 transports the screen to be inspected 6 to the transfer platform 12. The transfer platform 12 performs preliminary correction on the screen to be inspected 6, and the transfer platform 12 is used to transfer the screen to be inspected 6 from the moving feeding belt 11 to a stable plane, so that the subsequent feeding is more accurate and the feeding rhythm is stabilized.

[0062] In this embodiment, the first loading and handling hand 13 includes a first driving member 131, a first lifting cylinder 132 and a first adsorption member 133. The first driving member 131 is composed of a motor, a synchronous belt and a moving shaft. The first driving member 131 drives the first lifting cylinder 132 to move back and forth along the direction from the loading belt 11 to the transfer platform 12. The first lifting cylinder 132 is lifted and lowered vertically. The first adsorption member 133 is arranged at the end of the first lifting cylinder 132 and moves up and down synchronously. The first adsorption member 133 can be composed of a vacuum suction cup and is used to adsorb the screen 6 to be inspected. When the screen 6 reaches the transfer platform 12 along the loading belt 11, When the first loading and handling hand 13 is in the material picking position, the first driving member 131 drives the first lifting cylinder 132 and the first adsorbing member 133 to move to the material picking position, the first lifting cylinder 132 drives the first adsorbing member 133 to move downward, so that the first adsorbing member 133 adsorbs the screen to be inspected 6, the first lifting cylinder 132 drives the first adsorbing member 133 to move upward, the first driving member 131 moves in the opposite direction and reaches the transfer platform 12, the first lifting cylinder 132 drives the first adsorbing member 133 to move downward again, the first adsorbing member 133 places the screen to be inspected 6 on the transfer platform 12 and releases the vacuum adsorption state;

[0063] Furthermore, the transfer platform 12 includes a vacuum suction plate 122 and a first positioning cylinder 121, the vacuum suction plate 122 adsorbs the screen 6, the first positioning cylinder 121 includes a first X-direction cylinder and a first Y-direction cylinder, the first X-direction cylinder pushes the screen 6 to the correction position along the X-direction, and the first Y-direction cylinder pushes the screen 6 to the correction position along the Y-direction. The first X-direction cylinder and the first Y-direction cylinder are respectively located on both sides of the vacuum suction cup, namely, the X-direction and the Y-direction. When the first loading and transporting hand 13 transports the screen 6 from the loading belt 11 to the transfer platform 12, a large error will occur in the position of the screen 6. The first X-direction cylinder pushes the screen 6 to be inspected to a preset position along the X-axis direction, and the first Y-direction cylinder pushes the screen 6 to be inspected to a preset position along the Y-axis direction, so that the position of the screen 6 is preliminarily corrected, thereby reducing the error compensation amount during subsequent loading to the adsorption platform 22, making the loading more accurate. The vacuum suction plate 122 is provided with two screen 6 adsorption positions, so that the vacuum suction plate 122 can simultaneously carry and correct two screens 6, thereby controlling the loading rhythm of the screen 6.

[0064] Furthermore, the loading belt 11 includes a feeding end and a picking end, the feeding end is for placing the screen 6 on the loading belt 11, the picking end is provided with a second positioning cylinder 111 and a blocking block 112 for blocking the screen 6, the blocking block 112 is provided with a positioning optical fiber, the second positioning cylinder 111 cooperates with the positioning optical fiber and pushes the screen 6 to the picking position of the first loading hand. The feeding end of the feeding belt 11 is used to receive upstream products, and the picking end is for the first feeding handling hand 13 to pick up materials. The feeding end is provided with an anti-stacking optical fiber, which is used to detect the screen 6 and prevent the screen 6 from overlapping. When the upstream screen 6 to be inspected is placed at the feeding end, the anti-stacking optical fiber detects the screen 6 and sends a signal. The upstream handling hand cannot continue to place the screen 6 at the feeding end at this time. When the screen 6 moves with the feeding belt 11 and leaves the feeding end, the signal of the anti-stacking optical fiber is released, and the upstream handling hand can continue to place the screen 6 at the feeding end, thereby preventing multiple screens 6 from overlapping at the feeding end; the blocking block 112 is arranged along a direction perpendicular to the sliding direction of the feeding belt 11 The stop block 112 can adjust its height as needed to prevent the screen 6 from sliding off. The second positioning cylinder 111 is arranged on the side of the material picking end and pushes the screen 6 to move in a direction perpendicular to the sliding direction of the feeding belt 11. The stop block 112 is provided with a positioning optical fiber, and the positioning optical fiber is used to detect whether the screen 6 reaches the position of the stop block 112. When the positioning optical fiber detects that the screen 6 reaches the stop block 112, the positioning optical fiber controls the motor to stop, and the feeding belt 11 stops moving. The screen 6 reaches the material picking position through the second positioning cylinder 111, and the first feeding handling hand 13 carries the screen 6 to the transfer platform 12. At this time, the motor starts and the feeding belt 11 continues to move.

[0065] Furthermore, the loading module 1 also includes a second loading handling hand 14 and a CCD positioning component 15. The second loading handling hand 14 is used to transport the screen 6 from the transfer platform 12 to the adsorption platform 22. The CCD positioning component 15 takes pictures to locate the position of the screen 6 in the second loading handling hand 14 and the loading position of the adsorption platform 22, and calculates the coordinate difference between the screen 6 and the loading point of the adsorption platform 22. The second loading and handling hand 14 carries the screen 6 that has been initially calibrated on the transfer platform 12 to the adsorption platform 22. The second loading and handling hand 14 includes a second driving member 141, a second lifting cylinder 142 and a second adsorption member 143. The second driving member 141 includes a driving motor and a swing arm. The second lifting cylinder 142 is arranged at the end of the swing arm. The driving motor drives the swing arm to swing so that the second lifting cylinder 142 swings back and forth between the transfer platform 12 and the adsorption platform 22. The second adsorption member 143 is arranged at the end of the second lifting cylinder 142. The second adsorption member 143 can be a vacuum suction cup. When the second lifting cylinder 142 swings to the top of the transfer platform 12, the second lifting cylinder 142 drives the second adsorption member 143 to move downward and adsorb the screen 6. The second lifting cylinder 142 drives the second adsorption member 143 to move upward again. Driven by the driving motor and the swing arm, the second lifting cylinder 142 moves to the top of the adsorption platform 22, and the second adsorption member 143 places the screen 6 on the adsorption platform 22.

[0066] In this embodiment, the CCD positioning component 15 includes a product positioning CCD151 and a fixture positioning CCD152. Since the adsorption platform 22 will produce a positional offset when it is constantly rotating, that is, when the second loading and handling hand 14 is loading, the position of the adsorption platform 22 will change slightly, causing an error in the loading of the screen 6. The CCD positioning component 15 can reduce this error. The product positioning CCD151 is set below the moving path of the second adsorption component 143 and takes a photo upward to determine the position coordinates of the screen 6. The fixture positioning CCD152 is set above the adsorption platform 22 and takes a photo downward to determine the position coordinates of the loading point of the adsorption platform 22. Taking the coordinates of the adsorption platform 22 as the base point, the offset between the screen 6 and the loading point of the adsorption platform 22 is calculated, and the offset is compensated to the reference discharge coordinates of the second loading and handling hand 14 to obtain the final loading coordinates. The loading is performed at this coordinate. The above-mentioned transfer platform 12 performs a preliminary correction on the screen 6 to reduce the above-mentioned offset, so that the loading of the screen 6 can be more accurate. Specifically, the product positioning CCD151 includes a product visual light source 1511, a product visual lens 1512 and a product visual camera 1513. The product visual light source 1511 irradiates the screen 6 on the second adsorption component 143 upward, and the product visual camera 1513 takes a picture of the screen 6 through the product visual lens 1512 to determine the position coordinates of the screen 6. The fixture positioning CCD152 includes a moving module 1524 and a fixture visual light source 1521, a fixture visual lens 1522 and a fixture visual camera 1523 installed on the moving module 1524. The fixture visual light source 1521 irradiates the adsorption platform 22 downward, and the fixture visual camera 1523 takes a picture of the adsorption platform 22 through the fixture visual lens 1522 to determine the position coordinates of the loading point. The moving module 1524 drives the fixture visual lens 1522, the fixture visual camera 1523 and the fixture visual light source 1521 to move in the X and Y directions through the moving shaft and the motor to determine the base point coordinates of the adsorption platform 22.

[0067] Further, refer to Fig.11The correction module 3 includes a third positioning cylinder 31 and a third lifting cylinder 32. The third lifting cylinder 32 is connected to the third positioning cylinder 31 and drives the third positioning cylinder 31 to move up and down. The third positioning cylinder 31 pushes the screen 6 on the suction cup platform to adjust along the X and Y directions. When the second loading and handling hand 14 places the screen 6 on the adsorption platform 22, the vacuum of the second adsorption member 143 on the second loading and handling hand 14 is released, and the screen 6 may shake when it falls on the adsorption platform 22, causing the position of the screen 6 to change. The correction module 3 performs a final correction on the screen 6 to ensure that the blind hole of the screen 6 is just located at the detection point during the subsequent blind hole light leakage detection. In this embodiment, the correction module 3 also includes a support frame 33, and the support frame 33 is used to support the third positioning cylinder 31 and the third lifting cylinder 32. The third positioning cylinder 31 includes a third X-direction cylinder and a third Y-direction cylinder. The third lifting cylinder 32 is fixed to the support frame 33. The third X-direction cylinder is connected to the third lifting cylinder 32. The third lifting cylinder 32 drives the third X-direction cylinder to move up and down. The third X-direction cylinder pushes the screen 6 on the adsorption platform 22 to the correction position along the X-axis direction, and the third Y-direction cylinder pushes the screen 6 on the adsorption platform 22 to the correction position along the Y-axis direction, so that the position of the screen 6 is finally corrected.

[0068] Furthermore, the calibration module 3 further includes a code scanning bracket and a code scanning camera 34 mounted on the code scanning bracket, and the code scanning camera 34 is located on the upper side of the adsorption platform 22 and scans the screen 6. In this embodiment, the code scanning camera 34 is arranged on the support frame 33. When the adsorption platform 22 rotates to the position of the calibration module 3, the code scanning camera 34 can automatically identify and scan the screen 6 on the adsorption platform 22, thereby reducing errors in manual input and improving the automation level of the production line. The code scanning camera 34 can identify the product information of the screen 6, so as to enter the serial number of the screen 6 to be inspected into the system, record it for subsequent inspection of the screen 6, and facilitate subsequent quality analysis.

[0069] Further, refer to Figure 12 to Figure 14 The upper shooting component 41 includes an upper mounting platform 412 and four upper detection cameras 411, the positions of the four upper detection cameras 411 are opposite to each other, the adsorption platform 22 is located below the center position of the four upper detection cameras 411, and the upper detection camera 411 is rotatably connected to the upper mounting platform 412 to switch the angle of irradiating the blind hole of the screen 6; the lower shooting component 42 is located below the upper shooting component 41, and the lower shooting component 42 includes a lower mounting platform 422 and four lower detection cameras 421, the positions of the four lower detection cameras 421 are opposite to each other, the adsorption platform 22 is located above the center position of the four lower detection cameras 421, and the lower detection camera 421 is rotatably connected to the lower mounting platform 422 to switch the angle of irradiating the blind hole of the screen 6.

[0070] Due to the different light leakage positions and light leakage intensities of the blind holes of the screen 6, the imaging effects are different when shooting from the upper side and the lower side. The weak light leakage of some blind holes can be captured by the upper camera but not by the lower camera, or can be captured by the lower camera but not by the upper camera. Therefore, two sets of upper and lower detection cameras are required to improve the detection accuracy of blind hole light leakage. In this embodiment, the upper shooting component 41 and the lower shooting component 42 are respectively located on the upper and lower sides of the adsorption platform 22. The upper shooting component 41 shoots the blind hole from the upper side of the screen 6, and the lower shooting component 42 shoots the blind hole from the lower side of the screen 6. The four upper detection cameras 411 are arranged opposite to each other in pairs, and each of the upper detection cameras 411 is oriented in the center direction of the four upper detection cameras 411. The adsorption platform 22 is located below the center position of the four upper detection cameras 411, so that each upper detection camera 411 is irradiated in the direction of the adsorption platform 22. The upper shooting component 41 also includes an upper rotating member 413 and an upper moving component 414. Four upper rotating members 413 are provided. The upper rotating member 413 is arranged between the upper mounting platform 412 and the upper detection camera 411. The upper rotating member 413 It can rotate to adjust the direction of the upper detection camera 411, so that the angle between the shooting direction of the upper detection camera 411 and the blind hole of the screen 6 can be adjusted. The adjustment range of the angle can be 5 degrees to 35 degrees, so as to better capture and detect whether there is light leakage on the side of the blind hole, so that the device can adjust the illumination angle of the upper detection camera 411 according to different screens 6 and blind hole positions. The upper mounting platform 412 is arranged on the upper moving component 414, and the upper moving component 414 drives the upper mounting platform 412 to move along the X direction and the Y direction, so that the upper detection camera 411 can be adjusted according to demand. The upper moving component 414 includes an X-motion lead screw, a Y-motion lead screw and a servo motor, and the upper mounting platform 412 is driven by the servo motor to move along the X-motion lead screw and the Y-motion lead screw.

[0071] Similarly, the lower shooting component 42 includes four relative lower detection cameras 421, each lower detection camera 421 is oriented in the center direction of the four lower detection cameras 421, and the adsorption platform 22 is located above the center position of the four lower detection cameras 421, so that each lower detection camera 421 is irradiated in the direction of the adsorption platform 22, and the lower shooting component 42 also includes a lower rotating member 423 and a lower moving component 424. There are four lower rotating members 423, and the lower rotating member 423 is arranged between the lower mounting platform 422 and the lower detection camera 421. The lower rotating member 423 can rotate to adjust the direction of the lower detection camera 421, so that the angle between the shooting direction of the lower detection camera 421 and the blind hole of the screen 6 can be adjusted, and the adjustment range of the angle can be 5 degrees to 35 degrees, so as to better capture and detect whether there is light leakage on the side of the blind hole, so that the device can be adjusted according to different The screen 6 and the blind hole position are adjusted to adjust the illumination angle of the lower detection camera 421. The lower mounting platform 422 is arranged on the lower moving component 424. The lower moving component 424 drives the lower mounting platform 422 to move along the X direction and the Y direction, so that the lower detection camera 421 can be adjusted in position according to demand. The lower moving component 424 includes an X-motion lead screw, a Y-motion lead screw and a servo motor. The servo motor drives the lower mounting platform 422 to move along the X-motion lead screw and the Y-motion lead screw. In this embodiment, when the adsorption platform 22 rotates to the position of the detection module 4, due to the correction of the previous correction module 3, the blind hole of the screen 6 is just located at the intersection of the light rays irradiated by the four upper detection cameras 411, and is also located at the intersection of the light rays irradiated by the four lower detection cameras 421. At this time, there is no need to adjust the illumination angle of the camera to quickly take pictures for detection, thereby improving the detection efficiency of the equipment.

[0072] In this embodiment, the upper detection camera 411 and the lower detection camera 421 are both CCD cameras. The position of the detection module 4 is covered by a light-shielding darkroom. When the upper detection camera 411 and the lower detection camera 421 take pictures of the screen 6, they are isolated from external light. In this embodiment, the field of view of the CCD camera is 15mm*10mm, its working distance is 65±3mm, and the resolution can reach 0.0048mm / px. After the CCD camera located on the upper side and the CCD camera located on the lower side take pictures of the upper and lower sides of the blind hole of the screen 6, the detection system compares and analyzes the pictures. If the blind hole area of ​​the picture is a uniform black area, the screen 6 is qualified. If a white light spot appears in the blind hole area of ​​the picture, the screen 6 is unqualified.

[0073] Furthermore, the detection module 4 also includes a shading glue detection component 43 for detecting light leakage of the shading glue of the screen 6. The shading glue detection component 43 includes a mounting bracket 431 and a shading glue detection camera 432 mounted on the mounting bracket 431. There are three shading glue detection cameras 432 arranged vertically. The irradiation light of the shading glue detection camera 432 located in the middle is in the same plane as the screen 6, and the shading glue detection cameras 432 located in the upper and lower parts are rotatably connected relative to the mounting bracket 431.

[0074] The shading glue detection component 43 also includes a third moving component 433 and a third rotating component 434. The mounting bracket 431 is arranged on the third moving component 433. The third moving component 433 drives the mounting bracket 431 to move along the X direction and the Y direction, so that the shading glue detection camera 432 can be adjusted according to the demand. The third moving component 433 includes an X-motion screw rod, a Y-motion screw rod and a servo motor. The servo motor drives the lower mounting bracket 431 to move along the X-motion screw rod and the Y-motion screw rod. The three shading glue detection cameras 432 are arranged vertically. The shading glue detection camera 432 located in the middle is fixed relative to the mounting bracket 431, and the irradiation line is located in the same plane as the screen 6 on the adsorption platform 22. A third rotating member 434 is also provided between the upper and lower shading glue detection cameras 432 and the mounting bracket 431. The third rotating member 434 can rotate to adjust the orientation angles of the upper shading glue detection camera 432 and the lower shading glue detection camera 432. The upper, middle and lower shading glue detection cameras 432 respectively take pictures of the shading glue of the screen 6 for detection, and analyze whether there is light leakage by comparing the picture with the preset picture. If white lines appear in the picture, it is defined as light leakage of the shading glue of the screen 6. If the picture is uniformly black, it is defined as qualified. The upper and lower shading glue detection cameras 432 adjust different illumination angles by rotating, so as to more accurately detect whether there is light leakage of the shading glue of the screen 6.

[0075] In this embodiment, reference Fig.15The unloading module 5 also includes an unloading handling hand 51, an OK belt 52 and an NG belt 53. When the screen 6 completes the inspection of the inspection module 4, the adsorption platform 22 rotates to the next product position, and the unloading handling hand 51 is located at the product position. The unloading handling hand 51 takes the inspected screen 6 from the adsorption platform 22 and places it on the OK belt 52 or the NG belt 53 according to the inspection result of the screen 6; the loading handling hand has the same structure and implementation as the above-mentioned second loading handling hand 14, which will not be repeated here. The OK belt 52 is used to receive and convey the screen 6 that has passed the inspection, and the NG belt 53 is used to receive and convey the screen 6 that has failed the inspection. Specifically, the OK belt 52 and the NG belt 53 are both driven by a driving motor. The OK belt 52 and the NG belt 53 are both provided with anti-stacking optical fibers at the end where the unloading handling hand 51 is placed. The anti-stacking optical fibers are used to detect the screen 6 to prevent multiple screens 6 from overlapping. The anti-stacking optical fibers are the same as the anti-stacking optical fibers on the above-mentioned loading belt 11, which will not be repeated here.

[0076] The present invention also provides a detection method, using the above-mentioned blind hole light leakage detection device, comprising the following steps:

[0077] The loading module 1 transports the screen 6 to the adsorption platform 22;

[0078] The adsorption platform 22 moves to the position of the correction module 3, and the correction module 3 corrects the position of the screen 6 on the adsorption platform 22;

[0079] The adsorption platform 22 continues to move to the position of the detection module 4, and the upper and lower sides of the blind hole of the screen 6 are photographed by the upper and lower shooting components 41 and the lower shooting components 42 at the same time, and the photographed pictures are read to detect and compare the blind hole area of ​​the screen 6 selected in the picture. If the blind hole area of ​​the screen 6 is a black area with uniform contrast, it is qualified. If the blind hole area of ​​the screen 6 has white spots, it is unqualified.

[0080] After the shooting and detection is completed, the unloading module 5 sorts and unqualified screens 6 according to the detection results of the screens 6.

[0081] The process of the feeding module 1 conveying the screen 6 to the adsorption platform 22 includes the first feeding hand 13 transporting the screen 6 from the feeding belt 11 to the transfer platform 12, the transfer platform 12 performs initial correction on the position of the screen 6, the second feeding hand 14 transports the screen 6 on the transfer platform 12, and the screen 6 is positioned by the product positioning CCD151 and the adsorption platform 22 is positioned by the fixture positioning CCD152, so that the screen 6 is loaded onto the adsorption platform 22; the turntable 21 rotates, driving the adsorption platform 22 to rotate from the feeding position of the feeding module 1 to the position of the correction module 3, and the correction module 3 corrects the screen 6 on the adsorption platform 22 through the positioning cylinder; the turntable 21 rotates, and the adsorption platform 22 rotates to the position of the detection module 4, and the upper shooting Component 41 and lower shooting component 42 simultaneously take pictures of blind hole light leakage of screen 6 on adsorption platform 22, read and compare pictures through PLC, define screen 6 with white light spots in blind hole area as unqualified screen 6, and define screen 6 with black area with uniform contrast in blind hole area as qualified screen 6. Turntable 21 continues to rotate, and adsorption platform 22 rotates to the position of shading glue detection component 43. Shading glue detection component 43 performs shading glue light leakage detection on screen 6, reads and compares pictures through PLC, and divides screen 6 into qualified and unqualified. After the detection is completed, unloading handling hand 51 places qualified screen 6 on OK belt 52 and unloads according to the detection result of screen 6, and places unqualified screen 6 on NG belt 53 and unloads.

[0082] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A blind hole light leakage detection device, used to detect blind holes in screens, characterized in that: include: Feeding module; The bearing module comprises a rotating disk which rotates in the circumferential direction and a plurality of adsorption platforms fixed to the rotating disk, wherein the plurality of adsorption platforms are arranged at intervals along the circumference of the rotating disk, the feeding module is used to transport the screen to the adsorption platforms, and the adsorption platforms are used to adsorb and fix the screen; A correction module, located at a next station of the feeding module and opposite to the adsorption platform, the correction module is used to correct the position of the screen on the adsorption platform; The detection module comprises an upper shooting assembly and a lower shooting assembly which are opposite to each other, the adsorption platform is located between the upper shooting assembly and the lower shooting assembly, the upper shooting assembly is used to detect the upper side of the blind hole of the calibrated screen, and the lower shooting assembly is used to detect the lower side of the blind hole of the calibrated screen; A material unloading module, used for sorting and unloading the screens after being detected by the detection module; The feeding module comprises a feeding belt, a transfer platform and a first feeding transporter, wherein the feeding belt is adjacent to the transfer platform and transports the screen, the first feeding transporter transports the screen to the transfer platform, and the transfer platform is used to preliminarily correct the position of the screen; The loading module also includes a second loading and transporting hand and a CCD positioning component, wherein the second loading and transporting hand is used to transport the screen from the transfer platform to the adsorption platform; the CCD positioning component includes a product positioning CCD and a fixture positioning CCD, wherein the product positioning CCD is arranged below the moving path of the second loading and transporting hand and takes a photo upward to determine the position coordinates of the screen, and the fixture positioning CCD is arranged above the adsorption platform and takes a photo downward to determine the position coordinates of the loading point on the adsorption platform, so as to calculate the coordinate difference between the screen and the loading point on the adsorption platform; The detection module also includes a shading glue detection component for detecting light leakage from the screen shading glue, the shading glue detection component includes a third moving component, a mounting bracket, and a shading glue detection camera mounted on the mounting bracket, the third moving component drives the mounting bracket to move along the X direction and the Y direction, so that the shading glue detection camera can be positioned according to needs, and there are three shading glue detection cameras arranged vertically, the irradiation light of the shading glue detection camera located in the middle is in the same plane as the screen, and the shading glue detection cameras located at the upper and lower parts are rotatably connected relative to the mounting bracket.

2. The blind hole light leakage detection device according to claim 1, characterized in that: The transfer platform includes a vacuum suction plate and a first positioning cylinder, the vacuum suction plate adsorbs the screen, the first positioning cylinder includes a first X-direction cylinder and a first Y-direction cylinder, the first X-direction cylinder pushes the screen to a correction position along the X-direction, and the first Y-direction cylinder pushes the screen to a correction position along the Y-direction.

3. The blind hole light leakage detection device according to claim 1, characterized in that: The loading belt includes a feeding end and a picking end, the feeding end is for placing a screen on the loading belt, the picking end is provided with a second positioning cylinder and a blocking block for blocking the screen, the blocking block is provided with a positioning optical fiber, the second positioning cylinder cooperates with the positioning optical fiber and pushes the screen to the picking position of the first loading handle.

4. The blind hole light leakage detection device according to claim 1, characterized in that: The correction module includes a third positioning cylinder and a third lifting cylinder. The third lifting cylinder is connected to the third positioning cylinder and drives the third positioning cylinder to move up and down. The third positioning cylinder pushes the screen on the adsorption platform to adjust along the X and Y directions.

5. The blind hole light leakage detection device according to claim 1, characterized in that: The calibration module also includes a barcode scanning camera, which is located on the upper side of the adsorption platform and scans the screen.

6. The blind hole light leakage detection device according to claim 1, characterized in that: The upper shooting assembly includes an upper mounting platform and four upper detection cameras, the positions of the four upper detection cameras are opposite to each other, the adsorption platform is located below the center positions of the four upper detection cameras, and the upper detection cameras are rotatably connected to the upper mounting platform to switch the angle of irradiating the blind hole of the screen; The lower shooting assembly is located below the upper shooting assembly, and the lower shooting assembly includes a lower mounting platform and four lower detection cameras. The positions of the four lower detection cameras are opposite to each other, and the adsorption platform is located above the center positions of the four lower detection cameras. The lower detection cameras are rotatably connected to the lower mounting platform to switch the angle of irradiating the blind hole of the screen.

7. A detection method, characterized in that: The blind hole light leakage detection device according to any one of claims 1 to 6 comprises the following steps: The loading module transports the screen to the adsorption platform; The adsorption platform moves to the position of the correction module, and the correction module corrects the position of the screen on the adsorption platform; The adsorption platform continues to move to the position of the detection module. The upper and lower shooting components simultaneously shoot the upper and lower sides of the screen blind hole and read the pictures taken to detect and compare the screen blind hole area framed in the picture. If the blind hole area of ​​the screen is a black area with uniform contrast, it is qualified. If the blind hole area of ​​the screen has white spots, it is unqualified. After the shooting and testing is completed, the unloading module sorts and unloads qualified screens and unqualified screens according to the screen detection results.

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