A nondestructive visual inspection device for liquid crystal display screens

Abstract

The application discloses a kind of liquid crystal display screen nondestructive visual inspection device, and the present application relates to liquid crystal display screen detection technical field.The liquid crystal display screen nondestructive visual inspection device is set by limiting post and rectangular cleaning scraper, when the liquid crystal display screen body conveyed is contacted with rectangular cleaning scraper, it can drive rectangular cleaning scraper and positioning ring along corresponding limiting post rotation, at this time air inlet passage is connected, can complete the cleaning operation to the outer surface of liquid crystal display screen body, can be extracted and collected simultaneously with impurity, compared with traditional detection mode, on the one hand, the detection convenience and detection efficiency of equipment can be improved, so that the equipment can be suitable for detecting operation to different sizes of liquid crystal display screen body, improve the application range of equipment, while the detection effect of liquid crystal display screen body can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display screen detection, and in particular to a non-destructive visual detection device for a liquid crystal display screen. Background Art

[0002] Nondestructive testing of liquid crystal displays (LCDs) involves testing them without damaging or changing their performance. Visual inspection technology is generally used to detect damage on the surface of the LCD, meaning that a machine replaces the human eye for measurement and judgment. Image capture is performed, converting the captured target into an image signal, which is then transmitted to a dedicated image processing system for analysis. Referring to the Chinese patent application number CN118655077A, entitled "A Nondestructive Testing Device for Liquid Crystal Displays," the patent states that existing testing methods result in a relatively low visual inspection range and are inconvenient for double-sided nondestructive testing of LCDs, reducing the comprehensiveness of the nondestructive testing. However, the device still suffers from low detection efficiency and a limited scope of application. Therefore, we propose a nondestructive visual inspection device for LCDs to address these issues. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a non-destructive visual inspection device for liquid crystal display screens, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A non-destructive visual inspection device for liquid crystal display screens, comprising a body, wherein a conveyor belt and an output belt are rotatably connected on both sides of the body for conveying the liquid crystal display screen body;

[0005] A detection frame is provided between the conveyor belt and the output belt. A detection module is fixedly installed inside the detection frame, so that the LCD screen body can pass through the detection module through the conveyor belt to realize the detection operation;

[0006] Two limit posts are fixedly installed inside the machine body. The installation positions of the limit posts are respectively located on the upper and lower sides of the conveyor belt. Multiple positioning rings are rotatably sleeved on the outer sides of the limit posts, and return springs are sleeved on both ends of the positioning rings. A rectangular cleaning scraper is fixedly installed on the outer side of the positioning ring. An elastic cleaning scraper is fixedly installed on the end of the rectangular cleaning scraper, which is used to contact the surface of the LCD screen body to achieve the cleaning operation of the LCD screen body.

[0007] A cylindrical cavity is provided inside the limiting column, and a plurality of arc-shaped slots connected to the cylindrical cavity are symmetrically provided on the outside of the limiting column. The opening positions of the plurality of arc-shaped slots are adapted to the plurality of positioning rings. An air intake channel is provided inside the positioning ring and the rectangular cleaning scraper, so that the air intake channel can be connected to the corresponding arc-shaped slot when the rectangular cleaning scraper contacts the LCD screen body and drives the positioning ring to rotate along the limiting column. A negative pressure device is installed inside the machine body, and a connecting pipe is connected between the negative pressure device and the limiting column.

[0008] Preferably, the rectangular cleaning scraper is symmetrically provided with a plurality of adsorption slots at the end close to the elastic cleaning scraper, and the adsorption slots are located between two adjacent elastic cleaning scrapers for extracting and collecting the cleaned impurities.

[0009] Preferably, two adjacent rectangular cleaning scrapers are fitted together, and elastic sheets are installed on both sides of the rectangular cleaning scrapers for cleaning the sides of the liquid crystal display screen body.

[0010] Preferably, a fill light module is fixedly installed inside the detection frame, which is used for performing fill light operation when the liquid crystal display screen body passes through the interior of the detection module.

[0011] Preferably, a viewing window is fixedly installed inside the machine body, and the installation height of the conveyor belt and the output belt is kept flush.

[0012] Preferably, a marking module is fixedly installed inside the body for marking unqualified products.

[0013] Preferably, a limit assembly is provided inside the body for pushing the conveyed LCD screen body, the limit assembly includes a positioning frame, which is fixedly installed inside the body, and the bottom of the positioning frame is rotatably connected to a winding roller, positioning slide bars are fixedly installed on both sides of the body, and telescopic sleeves are slidably sleeved on the outside of the positioning slide bars, the telescopic sleeves on both sides are kept parallel, and elastic pull ropes are connected between the telescopic sleeves and the winding rollers, the end of the positioning slide bar is sleeved with a support spring for driving the telescopic sleeve to reset, and a pushing shaft is slidably installed on the end of the telescopic sleeve away from the positioning slide bar, and a protective end is fixedly installed on the end of the pushing shaft for pushing the LCD screen body, and a spring body is sleeved on the outside of the pushing shaft for driving the pushing shaft to reset.

[0014] Preferably, a driving motor is fixedly installed on the bottom of the positioning frame, and the driving motor is used to drive the winding roller to operate to realize the winding operation of the elastic rope.

[0015] Preferably, the positioning slide bars on both sides always remain coaxial.

[0016] Preferably, a concave support frame is fixedly installed inside the body, and a support sleeve is rotatably connected to the outside of the concave support frame. The installation height of the support sleeve is flush with the top surface of the conveyor belt, and is used to support the LCD screen body.

[0017] The present invention provides a non-destructive visual inspection device for liquid crystal display screens. Compared with the prior art, it has the following advantages:

[0018] (1) The non-destructive visual inspection device for liquid crystal display screens is provided with a limiting column and a rectangular cleaning scraper. When the conveyed liquid crystal display screen body contacts the rectangular cleaning scraper, the rectangular cleaning scraper and the positioning ring can be driven to rotate along the corresponding limiting column. At this time, the air inlet channel is connected, and the cleaning operation of the outer surface of the liquid crystal display screen body can be completed. At the same time, impurities can be extracted and collected. Compared with the traditional inspection method, on the one hand, the inspection convenience and inspection efficiency of the equipment can be improved, so that the equipment can be applied to the inspection operation of liquid crystal display screen bodies of different sizes, thereby improving the scope of application of the equipment and ensuring the inspection effect of the liquid crystal display screen body.

[0019] (2) The non-destructive visual inspection device for liquid crystal display screens, through the setting of the limit assembly, can complete the pushing operation of the liquid crystal display screen body by moving the telescopic sleeves on both sides along the positioning slide bar during the transportation of the liquid crystal display screen body, and through the cooperation of the pushing shaft rod, so that the liquid crystal display screen body can be transported in the center, and the transportation effect of the liquid crystal display screen body can be guaranteed while avoiding damage to the liquid crystal display screen body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of cross-section structure;

[0022] Figure 3 For the present invention Figure 2 Front view;

[0023] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0024] Figure 5 This is a schematic diagram of the structure of the limiting column and the rectangular cleaning scraper of the present invention;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the limiting column and the rectangular cleaning scraper of the present invention;

[0026] Figure 7 This is a schematic diagram of the enlarged structure of point B in the figure of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the limiting component of the present invention.

[0028] In the figure: 1. Machine body; 2. Window; 3. Conveyor belt; 4. Output belt; 5. LCD screen body; 6. Detection frame; 7. Fill light module; 8. Detection module; 9. Marking module; 10. Negative pressure device; 1001. Connecting pipe; 11. Limiting column; 1101. Cylindrical cavity; 1102. Arc-shaped notch; 12. Positioning ring; 1201. Return spring; 13. Rectangular cleaning scraper; 1301. Elastic cleaning scraper; 1302. Air intake channel; 14. Concave support frame; 1401. Support sleeve; 15. Positioning frame; 16. Drive motor; 17. Winding roller; 18. Positioning slide; 1801. Support spring; 19. Telescopic sleeve; 20. Push shaft; 2001. Protective end; 2002. Spring body; 21. Elastic pull rope. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-8 The present invention provides two technical solutions, specifically including the following embodiments:

[0031] Example 1:

[0032] In an embodiment of the present invention, a non-destructive visual inspection device for liquid crystal display screens includes a body 1, wherein a conveyor belt 3 and an output belt 4 are rotatably connected to both sides of the body 1 for conveying a liquid crystal display screen body 5;

[0033] In the embodiment of the present invention, specifically, the conveyor belt 3 and the output belt 4 are driven by separate motors, which will not be described in detail here;

[0034] In the embodiment of the present invention, a detection frame 6 is provided between the conveyor belt 3 and the output belt 4. A detection module 8 is fixedly installed inside the detection frame 6, so that the LCD screen body 5 can pass through the detection module 8 when being transported by the conveyor belt 3 to realize the detection operation;

[0035] In the embodiment of the present invention, specifically, a distance is left between the conveyor belt 3 and the output belt 4. As the conveyor belt 3 runs, the liquid crystal display body 5 transported above can pass through the inspection module 8, and then the output belt 4 completes the output operation, thereby achieving a comprehensive inspection operation of the liquid crystal display body 5.

[0036] In the embodiment of the present invention, specifically, the detection module 8 is an existing device, which is provided with multiple shooting modules inside, for performing image shooting and identification processing on the transported liquid crystal display screen body 5, and the detection module 8 is controlled based on the existing PLC control module;

[0037] In the embodiment of the present invention, further, two limiting columns 11 are fixedly installed inside the body 1, and the installation positions of the limiting columns 11 are respectively located on the upper and lower sides of the conveyor belt 3. A plurality of positioning rings 12 are rotatably sleeved on the outer side of the limiting columns 11, and both ends of the positioning rings 12 are sleeved with return springs 1201. A rectangular cleaning scraper 13 is fixedly installed on the outer side of the positioning ring 12, and an elastic cleaning scraper 1301 is fixedly installed on the end of the rectangular cleaning scraper 13, which is used to contact the surface of the liquid crystal display body 5 to achieve a cleaning operation on the liquid crystal display body 5;

[0038] In the embodiment of the present invention, specifically, when the end of the LCD screen body 5 contacts the rectangular cleaning scraper 13 during the transportation process, the rectangular cleaning scraper 13 can drive the corresponding positioning ring 12 to rotate outside the limiting column 11. At this time, the elastic cleaning scraper 1301 installed at the end of the rectangular cleaning scraper 13 can respectively contact both sides of the LCD screen body 5, that is, the outside of the screen and the outside of the shell. Then, as the LCD screen body 5 continues to be transported, the elastic cleaning scraper 1301 can be used to clean the LCD screen body 5, thereby ensuring the subsequent inspection effect.

[0039] In the embodiment of the present invention, specifically, a cylindrical cavity 1101 is formed inside the limiting column 11, and a plurality of arcuate notches 1102 that are interconnected with the cylindrical cavity 1101 are symmetrically formed on the outer side of the limiting column 11. The opening positions of the plurality of arcuate notches 1102 are adapted to the plurality of positioning rings 12. An air inlet channel 1302 is formed inside the positioning ring 12 and the rectangular cleaning scraper 13. When the rectangular cleaning scraper 13 contacts the liquid crystal display body 5 and drives the positioning ring 12 to rotate along the limiting column 11, the air inlet channel 1302 can be connected with the corresponding arcuate notch 1102. A negative pressure device 10 is installed inside the body 1, and a connecting pipe 1001 is connected between the negative pressure device 10 and the limiting column 11.

[0040] In the embodiment of the present invention, when the positioning ring 12 and the rectangular cleaning scraper 13 are in the initial position, the air inlet channel 1302 and the arc-shaped notch 1102 remain sealed. When the rectangular cleaning scraper 13 drives the positioning ring 12 to rotate along the limiting column 11, the air inlet channel 1302 is connected to the arc-shaped notch 1102. At this time, the operation of the negative pressure device 10 can generate a negative pressure in the air inlet channel 1302 inside the rectangular cleaning scraper 13, thereby extracting and collecting impurities, further improving the use effect of the equipment.

[0041] In the embodiment of the present invention, specifically, by providing a plurality of rectangular cleaning scrapers 13, the device can be adapted to clean liquid crystal display screen bodies 5 of different sizes, thereby increasing the scope of application of the device.

[0042] In the embodiment of the present invention, specifically, a plurality of adsorption slots are symmetrically provided at the end of the rectangular cleaning scraper 13 near the elastic cleaning scraper 1301. The adsorption slots are located between two adjacent elastic cleaning scrapers 1301 and are used to extract and collect cleaned impurities. The provision of the adsorption slots makes it easier to extract and collect impurities scraped off by the elastic cleaning scraper 1301, thereby ensuring the subsequent detection effect.

[0043] In the embodiment of the present invention, further, two adjacent rectangular cleaning scrapers 13 are fitted together, and elastic sheets are installed on both sides of the rectangular cleaning scraper 13 for cleaning the sides of the liquid crystal display body 5. The elastic sheets can be used to clean the left and right sides of the liquid crystal display body 5, further improving the detection effect of the device. The elastic sheets are not shown in the figure.

[0044] In the embodiment of the present invention, specifically, a fill light module 7 is fixedly installed inside the detection frame 6, which is used to perform fill light operation when the liquid crystal display body 5 passes through the interior of the detection module 8. The fill light module 7 is an existing device;

[0045] In the embodiment of the present invention, specifically, a viewing window 2 is fixedly installed inside the body 1, and the installation height of the conveyor belt 3 and the output belt 4 is kept flush;

[0046] In the embodiment of the present invention, specifically, a marking module 9 is fixedly installed inside the body 1 for marking unqualified products. The marking module 9 is an existing marking device and will not be described in detail here.

[0047] Embodiment 2: Based on embodiment 1, further, a limiting component is provided inside the body 1 for pushing the conveyed LCD screen body 5. The limiting component includes a positioning frame 15, including a positioning frame 15 fixedly installed inside the body 1, and a winding roller 17 is rotatably connected to the bottom of the positioning frame 15. Positioning slide bars 18 are fixedly installed on both sides of the interior of the body 1, and the outer sides of the positioning slide bars 18 are slidably sleeved with telescopic sleeves 19. The telescopic sleeves 19 on both sides are kept parallel, and an elastic pull rope 21 is connected between the telescopic sleeve 19 and the winding roller 17. The end of the positioning slide bar 18 is sleeved. A support spring 1801 is connected to drive the telescopic sleeve 19 to reset. A pushing shaft 20 is slidably installed at one end of the telescopic sleeve 19 away from the positioning slide 18. A protective end 2001 is fixedly installed at the end of the pushing shaft 20 for pushing the LCD screen body 5. A spring body 2002 is sleeved on the outer side of the pushing shaft 20 for driving the pushing shaft 20 to reset. A driving motor 16 is fixedly installed at the bottom of the positioning frame 15. The driving motor 16 is used to drive the winding roller 17 to operate and realize the winding operation of the elastic pull rope 21. The positioning slides 18 on both sides always remain coaxial.

[0048] In the embodiment of the present invention, specifically, when the conveyor belt 3 drives the upper LCD screen body 5 to move, the driving motor 16 can drive the winding roller 17 to rotate, and the elastic pull rope 21 is wound, so that the telescopic cover 19 can be forced to slide along the positioning slide bar 18, and the supporting spring 1801 is stretched. As the telescopic cover 19 slides toward the LCD screen body 5, the protective end head 2001 installed at the end of the pushing shaft 20 can contact the LCD screen body 5, and then the LCD screen body 5 is pushed toward the middle. After the LCD screen body 5 reaches the middle position, the winding of the winding roller 17 can stretch the elastic pull rope 21, so that the device can be suitable for pushing LCD screen bodies 5 of different sizes, while preventing the LCD screen body 5 from being squeezed and damaged.

[0049] In the embodiment of the present invention, the driving motor 16 is an existing forward and reverse motor, which can drive the winding roller 17 to reverse, so that the telescopic sleeve 19 can drive the pushing shaft 20 to reset through the support spring 1801;

[0050] In the embodiment of the present invention, specifically, the telescopic cover plate 19 is equipped with a spring and can be extended and retracted. When the protective end 2001 at the end of the pushing shaft 20 contacts the running LCD screen body 5 and pushes it toward the middle, the telescopic cover plate 19 can be stretched under the force to avoid affecting the conveying effect of the LCD screen body 5.

[0051] In the embodiment of the present invention, further, a concave support frame 14 is fixedly installed inside the body 1, and a support sleeve 1401 is rotatably connected to the outside of the concave support frame 14. The installation height of the support sleeve 1401 is kept flush with the top surface of the conveyor belt 3, and is used to support the LCD screen body 5. Through the cooperation between the concave support frame 14 and the support sleeve 1401, the bottom of the LCD screen body 5 can be supported, thereby avoiding the phenomenon of the LCD screen body 5 falling due to its small size, thereby ensuring the use effect of the equipment.

[0052] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0053] The above is a detailed description of an embodiment of the present invention. However, the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A non-destructive visual inspection device for liquid crystal display screens, comprising a body (1), characterized in that: A conveyor belt (3) and an output belt (4) are rotatably connected to both sides of the machine body (1) for conveying the liquid crystal display screen body (5); A detection frame (6) is provided between the conveyor belt (3) and the output belt (4), and a detection module (8) is fixedly installed inside the detection frame (6), so that the liquid crystal display screen body (5) can pass through the detection module (8) through the conveyor belt (3) to achieve detection operation; Two limiting columns (11) are fixedly installed inside the machine body (1), and the installation positions of the limiting columns (11) are respectively located on the upper and lower sides of the conveyor belt (3). The outer sides of the limiting columns (11) are rotatably sleeved with multiple positioning rings (12), and both ends of the positioning rings (12) are sleeved with return springs (1201). A rectangular cleaning scraper (13) is fixedly installed on the outer sides of the positioning rings (12), and an elastic cleaning scraper (1301) is fixedly installed at the end of the rectangular cleaning scraper (13) for contacting the surface of the liquid crystal display screen body (5) to achieve a cleaning operation on the liquid crystal display screen body (5); A cylindrical cavity (1101) is provided inside the limiting column (11), and a plurality of arc-shaped notches (1102) that are in communication with the cylindrical cavity (1101) are symmetrically provided on the outer side of the limiting column (11). The opening positions of the plurality of arc-shaped notches (1102) are adapted to the plurality of positioning rings (12). An air inlet channel (1302) is provided inside the positioning ring (12) and the rectangular cleaning scraper (13). When the rectangular cleaning scraper (13) contacts the liquid crystal display screen body (5) and drives the positioning ring (12) to rotate along the limiting column (11), the air inlet channel (1302) can be communicated with the corresponding arc-shaped notches (1102). A negative pressure device (10) is installed inside the machine body (1), and a connecting pipe (1001) is connected between the negative pressure device (10) and the limiting column (11).

2. The non-destructive visual inspection device for liquid crystal display screens according to claim 1, characterized in that: The rectangular cleaning scraper (13) is symmetrically provided with a plurality of adsorption slots at the end close to the elastic cleaning scraper (1301), and the adsorption slots are located between two adjacent elastic cleaning scrapers (1301) for extracting and collecting the cleaned impurities.

3. The non-destructive visual inspection device for liquid crystal display screens according to claim 1, characterized in that: Two adjacent rectangular cleaning scrapers (13) are fitted together, and elastic sheets are installed on both sides of the rectangular cleaning scraper (13) for cleaning the side edges of the liquid crystal display screen body (5).

4. The non-destructive visual inspection device for liquid crystal display screens according to claim 1, characterized in that: A fill light module (7) is fixedly installed inside the detection frame (6) and is used for performing fill light operation when the liquid crystal display screen body (5) passes through the interior of the detection module (8).

5. The non-destructive visual inspection device for liquid crystal display screens according to claim 1, characterized in that: A viewing window (2) is fixedly installed inside the machine body (1), and the installation heights of the conveyor belt (3) and the output belt (4) are kept flush.

6. The non-destructive visual inspection device for liquid crystal display screens according to claim 1, characterized in that: A marking module (9) is fixedly installed inside the machine body (1) and is used for marking unqualified products.

7. The non-destructive visual inspection device for liquid crystal display screens according to claim 1, characterized in that: The body (1) is provided with a limiting assembly inside for pushing the transported liquid crystal display screen body (5), the limiting assembly includes a positioning frame (15), the positioning frame (15) is fixedly installed inside the body (1), the bottom of the positioning frame (15) is rotatably connected to a winding roller (17), positioning slide bars (18) are fixedly installed on both sides of the body (1), and the outer sides of the positioning slide bars (18) are slidably sleeved with telescopic sleeves (19), the telescopic sleeves (19) on both sides are kept parallel, and the telescopic sleeves (19) are An elastic pull rope (21) is connected to the winding roller (17), and a support spring (1801) is sleeved on the end of the positioning slide rod (18) for driving the telescopic sleeve (19) to reset. A pushing shaft (20) is slidably installed on the end of the telescopic sleeve (19) away from the positioning slide rod (18). A protective end (2001) is fixedly installed on the end of the pushing shaft (20) for pushing the liquid crystal display screen body (5). A spring body (2002) is sleeved on the outer side of the pushing shaft (20) for driving the pushing shaft (20) to reset.

8. The non-destructive visual inspection device for liquid crystal display screens according to claim 7, characterized in that: A driving motor (16) is fixedly mounted on the bottom of the positioning frame (15), and the driving motor (16) is used to drive the winding roller (17) to operate, thereby realizing the winding operation of the elastic pull rope (21).

9. The non-destructive visual inspection device for liquid crystal display screens according to claim 7, characterized in that: The positioning slide bars (18) on both sides always remain coaxial.

10. The non-destructive visual inspection device for liquid crystal display screens according to claim 1, characterized in that: A concave support frame (14) is fixedly installed inside the body (1), and a support sleeve (1401) is rotatably connected to the outside of the concave support frame (14). The installation height of the support sleeve (1401) is kept flush with the top surface of the conveyor belt (3) and is used to support the liquid crystal display screen body (5).

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