Liquid crystal display screen lossless visual inspection device

Abstract

The invention discloses a lossless visual detection device for a liquid crystal display screen, and relates to the technical field of liquid crystal display screen detection. According to the lossless visual detection device for the liquid crystal display screen, through the arrangement of limiting columns and a rectangular cleaning scraper, when a conveyed liquid crystal display screen body is in contact with the rectangular cleaning scraper, the rectangular cleaning scraper and a positioning ring can be driven to rotate along the corresponding limiting columns, and at the moment, an air inlet channel is communicated; according to the liquid crystal display screen body detection device, the outer surface of a liquid crystal display screen body can be cleaned, impurities can be extracted and collected, and compared with a traditional detection mode, on one hand, the detection convenience and detection efficiency of the device can be improved, and the device can be suitable for detecting liquid crystal display screen bodies of different sizes; the application range of the equipment is expanded, and meanwhile, the detection effect on the liquid crystal display screen body can be ensured.

Description

Technical Field

[0001] The 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] The non-destructive testing of liquid crystal display screens is to test them without damaging or changing their performance. Generally, visual inspection technology is used to detect whether there is damage on the surface of the liquid crystal display screen, that is, the machine is used to replace the human eye to make measurements and judgments; by image capture and converting the captured target into an image signal, and transmitting it to a dedicated image processing system for analysis, etc., refer to the Chinese patent, the announcement number is "CN118655077A" "A non-destructive testing device for liquid crystal display screens", the patent points out that the existing detection method will lead to a relatively low visual detection range during detection, and it is not convenient to perform double-sided non-destructive testing on liquid crystal display screens, which reduces the comprehensiveness of non-destructive testing; but the device still has the problems of low detection efficiency and small scope of application. In this regard, we propose a non-destructive visual inspection device for liquid crystal display screens to solve the above problems. 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 a liquid crystal display screen, 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 a liquid crystal display screen comprises a body, and a conveyor belt and an output belt are rotatably connected to the two sides of the body, respectively, for conveying the liquid crystal display screen body;

[0005] A detection frame is provided between the conveyor belt and the output belt, and 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 columns are fixedly installed inside the machine body, and the installation positions of the limit columns are respectively located at the upper and lower sides of the conveyor belt. Multiple positioning rings are rotatably sleeved on the outer sides of the limit columns, and both ends of the positioning rings are sleeved with return springs. A rectangular cleaning scraper is fixedly installed on the outer side of the positioning ring, and an elastic cleaning scraper is fixedly installed on the end of the rectangular cleaning scraper for contacting with the surface of the liquid crystal display screen body to achieve the cleaning operation of the liquid crystal display 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 outer side of the limiting column. The opening positions of the plurality of arc-shaped slots are adapted to the plurality of positioning rings. An air inlet passage is provided inside the positioning ring and the rectangular cleaning scraper, so that the air inlet passage can be connected to the corresponding arc-shaped slot when the rectangular cleaning scraper contacts the liquid crystal display 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 to each other, 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, and 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 machine body for marking unqualified products.

[0013] Preferably, a limit assembly is provided inside the body for pushing the conveyed LCD display screen body, the limit assembly includes a positioning frame, which is fixedly installed inside the body, and a winding roller is rotatably connected to the bottom of the positioning frame, positioning slide bars are fixedly installed on both sides of the body, and telescopic sleeves are slidably sleeved on the outer sides 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, and a supporting spring is sleeved on the end of the positioning slide bar 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 display screen body, and a spring body is sleeved on the outer side of the pushing shaft for driving the pushing shaft to reset.

[0014] Preferably, a driving motor is fixedly mounted 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 pull 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, which 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 beneficial effects:

[0018] (1) The non-destructive visual inspection device for liquid crystal display screens is provided with a limit 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 limit 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 suitable for inspection operations on 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 through the telescopic sleeves on both sides moving 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 ensured 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 the cross-section structure;

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

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

[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 It is a schematic diagram of the cross-sectional structure of the limit column and the rectangular cleaning scraper of the present invention;

[0026] Figure 7 It 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. 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. limit column; 1101. cylindrical cavity; 1102. arc notch; 12. positioning ring; 1201. reset 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 bar; 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 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.

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

[0031] Embodiment 1:

[0032] In an embodiment of the present invention, a non-destructive visual inspection device for a liquid crystal display screen includes a body 1, wherein a conveyor belt 3 and an output belt 4 are rotatably connected to two sides of the body 1, respectively, 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, 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 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, and as the conveyor belt 3 runs, the liquid crystal display body 5 transported from above can pass through the detection module 8, and then the output operation is completed by the output belt 4, thereby achieving a comprehensive detection 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 a plurality of 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 limit columns 11 are fixedly installed inside the machine body 1, and the installation positions of the limit columns 11 are respectively located at the upper and lower sides of the conveyor belt 3, and multiple positioning rings 12 are rotatably sleeved on the outer side of the limit columns 11, and both ends of the positioning rings 12 are sleeved with return springs 1201, and 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 with the surface of the liquid crystal display body 5 to achieve the cleaning operation of the liquid crystal display body 5;

[0038] In the embodiment of the present invention, specifically, when the end of the liquid crystal display screen body 5 contacts the rectangular cleaning scraper 13 during the conveying process, the rectangular cleaning scraper 13 can drive the corresponding positioning ring 12 to rotate outside the limiting column 11, and the elastic cleaning scraper 1301 installed at the end of the rectangular cleaning scraper 13 can contact the two sides of the liquid crystal display screen body 5, that is, the outside of the display screen and the outside of the shell, respectively. Then, as the liquid crystal display screen body 5 is continuously conveyed, the liquid crystal display screen body 5 can be cleaned by the elastic cleaning scraper 1301, thereby ensuring the subsequent detection effect;

[0039] In the embodiment of the present invention, specifically, a cylindrical cavity 1101 is provided inside the limiting column 11, and a plurality of arc-shaped notches 1102 that are interconnected with the cylindrical cavity 1101 are symmetrically provided on the outer side of the limiting column 11, and the opening positions of the plurality of arc-shaped notches 1102 are mutually adapted to the plurality of positioning rings 12, and an air inlet channel 1302 is provided inside the positioning ring 12 and the rectangular cleaning scraper 13, so that the air inlet channel 1302 can be connected with the corresponding arc-shaped notch 1102 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, and 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;

[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 negative pressure in the air inlet channel 1302 inside the rectangular cleaning scraper 13, so as to extract and collect impurities, thereby 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 applied to cleaning liquid crystal display screen bodies 5 of different sizes, thereby improving the application range 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 close to the elastic cleaning scraper 1301, and the adsorption slots are provided between two adjacent elastic cleaning scrapers 1301, and are used to extract and collect the cleaned impurities. By setting the adsorption slots, it is easier to extract and collect the 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 attached to each other, 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 for fill light operation when the liquid crystal display screen body 5 passes through the inside 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 machine body 1, and the installation heights of the conveyor belt 3 and the output belt 4 are 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 machine body 1 for pushing the conveyed liquid crystal display screen body 5, and the limiting component includes a positioning frame 15, including a positioning frame 15 fixedly installed inside the machine body 1, and a winding roller 17 is rotatably connected to the bottom of the positioning frame 15, and positioning slide bars 18 are fixedly installed on both sides of the inside of the machine body 1, and telescopic sleeves 19 are slidably sleeved on the outer sides of the positioning slide bars 18, and the telescopic sleeves 19 on both sides are kept parallel, and elastic pull ropes 21 are connected between the telescopic sleeves 19 and the winding roller 17, and the end of the positioning slide bar 18 is sleeved A support spring 1801 is connected to drive the retractable sleeve 19 to reset. A push shaft 20 is slidably installed at one end of the retractable sleeve 19 away from the positioning slide bar 18. A protective end 2001 is fixedly installed at the end of the push shaft 20 for pushing the liquid crystal display screen body 5. A spring body 2002 is sleeved on the outer side of the push shaft 20 for driving the push shaft 20 to reset. A drive motor 16 is fixedly installed at the bottom of the positioning frame 15. The drive motor 16 is used to drive the winding roller 17 to run and realize the winding operation of the elastic pull rope 21. The positioning slide bars 18 on both sides always keep 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 plate 19 can be forced to slide along the positioning slide bar 18, and the supporting spring 1801 is stretched. As the telescopic cover plate 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, and at the same time prevent 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 supporting spring 1801;

[0050] In the embodiment of the present invention, specifically, the telescopic cover plate 19 has a built-in spring and can be 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 by 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 outer side 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 preventing the LCD screen body 5 from 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, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation 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 a liquid crystal display screen, 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 at 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 at the end of the rectangular cleaning scraper (13) for contacting the surface of the liquid crystal display screen body (5) to realize the cleaning operation of 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) which are mutually connected 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 mutually 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 connected 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 to each other, 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 inside 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 to mark 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 conveyed liquid crystal display screen body (5), the limiting assembly comprising a positioning frame (15), the positioning frame (15) being fixedly mounted inside the body (1), the bottom of the positioning frame (15) being rotatably connected to a winding roller (17), positioning slide bars (18) being fixedly mounted on both sides inside the body (1), and telescopic sleeve plates (19) being slidably sleeved on the outer sides of the positioning slide bars (18), the telescopic sleeve plates (19) on both sides being kept parallel to each other, and the telescopic sleeve plates (19) An elastic pull rope (21) is connected to the winding roller (17); a support spring (1801) is sleeved on the end of the positioning slide rod (18) for driving the telescopic sleeve (19) to reset; a push shaft (20) is slidably mounted on one end of the telescopic sleeve (19) away from the positioning slide rod (18); a protective end (2001) is fixedly mounted on the end of the push shaft (20) for pushing the liquid crystal display screen body (5); a spring body (2002) is sleeved on the outer side of the push shaft (20) for driving the push 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 machine 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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