LCD screen body appearance detection equipment

Abstract

The utility model relates to LCD screen body appearance detection equipment which comprises a base. The feeding unit is arranged on the base; the first detection unit comprises a first camera mounting frame, a first camera module, a second camera module and a first adsorption assembly, the first camera mounting frame is arranged on the base, and the first camera module and the second camera module are movably arranged on the first camera mounting frame; the first adsorption assembly is arranged on the base in a sliding mode in the first direction and can move to the position below the first camera module and the second camera module. The first adsorption assembly comprises a first buffer plate and a first suction nozzle assembly, the first buffer plate is provided with a through hole in the thickness direction, and the first suction nozzle assembly is arranged in the through hole to adsorb a to-be-tested piece. According to the utility model, in the process of transferring the LCD screen body to be detected, the LCD screen body can be effectively protected, and the damage caused by hard contact is avoided, so that the damage to the LCD screen body in the detection process is avoided, and the qualified rate of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of LCD screen inspection technology, and in particular to an LCD screen appearance inspection device. Background Technology

[0002] With the widespread application of LCD (Liquid Crystal Display) in smartphones, televisions, automotive displays, and other fields, defect detection during the production process has become a crucial step in ensuring product yield. LCDs consist of a multi-layered structure, including a glass substrate, liquid crystal layer, color filter, and backlight module. Even in production environments requiring high cleanliness, defects such as scratches, bubbles, foreign objects, paint peeling, and edge chipping can still occur due to factors like static electricity, dust, and mechanical stress. Therefore, visual inspection of LCD screens is necessary. Existing LCD visual inspection equipment utilizes a combination of mechanisms to achieve the inspection.

[0003] However, the shortcomings of the existing technology are that it still has problems such as low automation and insufficient detection accuracy. In addition, since the LCD screen under test is relatively fragile, the gripping device used in conventional testing equipment is prone to damage to the LCD screen during the gripping and moving of the test piece, thereby reducing the product pass rate. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an LCD screen appearance inspection device that can effectively protect the LCD screen during the transportation of the LCD screen to be tested, avoid damage caused by hard contact, thereby avoiding damage to the LCD screen during the inspection process and improving the product qualification rate. In addition, the device of this utility model has a compact overall structure, which can effectively save installation space and has a high degree of automation.

[0005] To address the aforementioned technical problems, this utility model provides an LCD screen appearance inspection device for performing appearance inspection on the part under test, including,

[0006] Base;

[0007] A feeding unit is disposed on the base. The feeding unit includes a first transfer mechanism, under which the test piece is moved to a designated position by the first transfer mechanism.

[0008] The first detection unit includes a first camera mounting bracket, a first camera module, a second camera module, and a first adsorption assembly. The first camera mounting bracket is disposed on the base, and the first camera module and the second camera module are movably disposed on the first camera mounting bracket. The first adsorption assembly is slidably disposed on the base along a first direction and is movable below the first camera module and the second camera module. The first adsorption assembly includes a first buffer plate and a first suction nozzle assembly. The first buffer plate has a through hole along its thickness direction, and the first suction nozzle assembly is disposed in the through hole to adsorb the test piece. When the test piece is adsorbed, it adheres to the first buffer plate. The first camera module acquires images of the upper surface of the test piece, and the second camera module acquires images of the long side terminal of the test piece.

[0009] The second detection unit includes a second transfer mechanism, a second camera mounting bracket, a third camera module, a fourth camera module, a second adsorption component, and a third adsorption component. The second transfer mechanism is disposed on the base along the first direction, and the second adsorption component is disposed on the movable end of the second transfer mechanism. The third adsorption component is slidably disposed on the base along a second direction, which is perpendicular to the first direction. The third camera module is disposed below the second transfer mechanism and faces the second adsorption component to acquire images of the lower surface of the test piece. The fourth camera module is disposed on the second camera mounting bracket to acquire images of the short-side terminals of the test piece.

[0010] In one embodiment of the present invention, the second adsorption component includes a second buffer plate and a second suction nozzle assembly. The second buffer plate has a through hole along its thickness direction, and the second suction nozzle assembly is disposed in the through hole to adsorb the test piece. When the test piece is adsorbed, it adheres to the second buffer plate.

[0011] In one embodiment of the present invention, the third adsorption component includes a third buffer plate and a third suction nozzle assembly. The third buffer plate has a through hole along the thickness direction, and the third suction nozzle assembly is disposed in the through hole to adsorb the test piece. When the test piece is adsorbed, it is in contact with the third buffer plate.

[0012] In one embodiment of the present invention, the first detection unit further includes a first slide, the first slide extending along a first direction and disposed on the base, the first camera mounting bracket being located above the first slide, and the first adsorption component being connected to the movable end of the first slide.

[0013] In one embodiment of the present invention, the second detection unit further includes a second slide, which extends along a second direction and is disposed on the base. The second camera mounting bracket is located above the second slide, and the third adsorption component is disposed at the movable end of the second slide.

[0014] In one embodiment of this utility model, the feeding unit further includes a roller mechanism, and the test piece passes through the roller mechanism and the first transfer mechanism in sequence for transfer and feeding.

[0015] In one embodiment of the present invention, the first camera mounting bracket is further provided with a slide rail along the second direction, the first camera module is slidably connected to the slide rail and can move along the second direction; the first camera mounting bracket is further provided with a first lifting drive component, and the second camera module is mounted on the movable end of the first lifting drive component.

[0016] In one embodiment of this utility model, the first buffer plate is made of a flexible material.

[0017] In one embodiment of this utility model, a feeding unit is further included. The feeding unit is disposed on the base and adjacent to the second detection unit to transfer and feed the test piece after the detection is completed.

[0018] In one embodiment of this utility model, a re-judgment area is also provided, which is adjacent to the unloading unit. The re-judgment area is equipped with a workbench, a barcode scanning platform and a barcode scanner, and the operator re-judges the unqualified products in the re-judgment area.

[0019] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0020] The LCD screen appearance inspection device of this utility model includes a base, a feeding unit, a first inspection unit, and a second inspection unit. Through the cooperation of the above structures, the part to be tested can be fed through the feeding unit in sequence and then pass through the first inspection unit and the second inspection unit in sequence, thereby realizing the appearance inspection of the upper surface, lower surface, long side terminals, and short side terminals of the part to be tested. Thus, a highly integrated automated appearance inspection process can be realized. Furthermore, during the movement and adsorption of the part to be tested, the first adsorption component can achieve soft contact with the part to be tested while tightly adsorbing it, effectively avoiding damage to the part to be tested during the inspection process. In addition, it can effectively protect the LCD screen during the transfer of the LCD screen to be tested, avoiding damage caused by hard contact and improving the product qualification rate. Moreover, the overall structure of the device of this utility model is compact, which can effectively save installation space and has a high degree of automation. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the first detection unit in a preferred embodiment of the present invention.

[0024] Figure 3 This is a partial structural schematic diagram of the second detection unit according to a preferred embodiment of the present invention.

[0025] Figure 4 This is a partial structural schematic diagram of the second detection unit according to a preferred embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the terminal detection module of the second detection unit in a preferred embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of the first buffer plate in a preferred embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the feeding unit of a preferred embodiment of the present invention.

[0029] Explanation of reference numerals in the accompanying drawings: 1. Base; 2. Feeding unit; 20. First transfer mechanism; 21. Roller mechanism; 3. First detection unit; 30. First camera mounting bracket; 31. First camera module; 32. Second camera module; 33. First buffer plate; 35. First slide table; 36. Slide rail; 4. Second detection unit; 40. Second transfer mechanism; 41. Second camera mounting bracket; 42. Third camera module; 43. Fourth camera module; 44. Second adsorption assembly; 45. Third adsorption assembly; 46. Second slide table; 5. Unloading unit; 51. First unloading and conveying assembly; 52. Second unloading and conveying assembly. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0031] Reference Figures 1 to 7 As shown, this utility model discloses an LCD screen appearance inspection device.

[0032] In this embodiment, the test piece is a rectangular glass substrate, and the LCD screen appearance inspection device is used to perform appearance inspections on the upper surface, lower surface, long side terminals, and short side terminals of the test piece.

[0033] The LCD screen appearance inspection device includes a base 1;

[0034] The LCD screen appearance inspection equipment also includes a loading unit 2, which is disposed on the base 1. The loading unit 2 includes a first transfer mechanism 20, and the test piece is moved to a designated position under the drive of the first transfer mechanism 20.

[0035] The LCD screen appearance inspection device further includes a first inspection unit 3, which comprises a first camera mounting bracket 30, a first camera module 31, a second camera module 32, and a first adsorption component. The first camera mounting bracket 30 is disposed on the base 1, and the first camera module 31 and the second camera module 32 are movably disposed on the first camera mounting bracket 30. The first adsorption component is slidably disposed on the base 1 along a first direction and can be moved to below the first camera module 31 and the second camera module 32; thereby enabling line scanning of the test piece by the first camera module 31 and the second camera module 32 during transportation, improving the efficiency of appearance inspection.

[0036] Specifically, the first adsorption assembly includes a first buffer plate 33 and a first suction nozzle assembly. The first buffer plate has through holes along its thickness direction, and the first suction nozzle assembly is disposed in the through holes to adsorb the test piece. When the test piece is adsorbed, it is in contact with the first buffer plate 33. The first buffer plate 33 supports the test piece, and since the first buffer plate 33 and the test piece are in soft contact, the test piece is effectively protected and wear is avoided.

[0037] The first camera module 31 acquires images of the upper surface of the test piece, and the second camera module 32 acquires images of the long side terminal of the test piece; and uploads the acquired image data to the control terminal to determine whether the appearance of the upper surface and long side terminal of the test piece meets the standard.

[0038] The LCD screen appearance inspection equipment further includes a second inspection unit 4, which includes a second transfer mechanism 40, a second camera mounting bracket 41, a third camera module 42, a fourth camera module 43, a second adsorption component 44, and a third adsorption component 45. The second transfer mechanism 40 extends along the first direction and is disposed on the base 1; the second adsorption component 44 is disposed at the movable end of the second transfer mechanism 40; and the third adsorption component 45 is slidably disposed on the base 4 along the second direction.

[0039] It should be noted that the second direction is perpendicular to the first direction;

[0040] The third camera module 42 is disposed below the second transfer mechanism 40 and faces the second adsorption assembly 44 to acquire images of the lower surface of the test piece. The fourth camera module 43 is mounted on the second camera mounting bracket 41, and the third adsorption assembly 45 can be driven to move past the second camera mounting bracket 41. The fourth camera module 43 is positioned facing the third adsorption assembly 45 to acquire images of the short-side terminals of the test piece.

[0041] Specifically, the test piece, having completed the long-side terminal inspection, passes over the third camera module 42 under the drive of the second transfer mechanism 40. The third camera module 42 captures an image of the lower surface of the test piece. Then, the test piece is placed on the third adsorption assembly 45 under the drive of the second transfer mechanism 40. The third adsorption assembly 45 is driven to move below the fourth camera module 43, where the fourth camera module 43 captures an image of the short-side terminal of the test piece. Correspondingly, during the movement and transfer of the test piece, the third camera module 42 and the fourth camera module 43 perform line scanning on the test piece to achieve appearance inspection, thereby significantly improving inspection efficiency.

[0042] Therefore, it can be seen that the LCD screen appearance inspection equipment protected by this utility model is provided with a base, a feeding unit, a first inspection unit, and a second inspection unit. Through the cooperation of the above structures, the part to be tested can be fed through the feeding unit in sequence and then pass through the first inspection unit and the second inspection unit in sequence, thereby realizing the appearance inspection of the upper surface, lower surface, long side terminals, and short side terminals of the part to be tested. Thus, a highly integrated automated appearance inspection process can be realized. In addition, during the movement and adsorption of the part to be tested, the first adsorption component can achieve soft contact with the part to be tested while tightly adsorbing it, effectively avoiding damage to the part to be tested during the inspection process. This effectively protects the LCD screen during the transfer of the LCD screen to be tested, avoiding damage caused by hard contact and improving the product qualification rate. Furthermore, the overall structure of the equipment of this utility model is compact, which can effectively save installation space and has a high degree of automation.

[0043] In a preferred embodiment, the structure of the second adsorption component 44 is similar to that of the first adsorption component. Specifically, the second adsorption component includes a second buffer plate and a second suction nozzle assembly. The second buffer plate has through holes along its thickness direction, and the second suction nozzle assembly is disposed within the through holes to adsorb the test piece. When the test piece is adsorbed, it adheres to the second buffer plate.

[0044] Meanwhile, the structure of the third adsorption component 45 is similar to that of the first adsorption component. In detail, the third adsorption component includes a third buffer plate and a third suction nozzle assembly. The third buffer plate has through holes along its thickness direction, and the third suction nozzle assembly is disposed in the through holes to adsorb the test piece. When the test piece is adsorbed, it adheres to the third buffer plate.

[0045] Furthermore, the first detection unit 3 also includes a first slide 35, which extends along a first direction and is disposed on the base 1. The first camera mounting bracket 30 is located above the first slide 35, and the first adsorption component is connected to the movable end of the first slide 35. With this configuration, the first adsorption component can move along the first direction under the drive of the first slide 35 to detect the upper surface and long side terminals of the test piece. The first slide 35 is an electric slide.

[0046] Furthermore, the second detection unit 4 also includes a second slide 46, which extends along a second direction and is disposed on the base 1. The second camera mounting bracket 41 is located above the second slide 46, and the third adsorption component 45 is disposed at the movable end of the second slide 46. Thus, the third adsorption component 45 can move along the second direction under the drive of the second slide 46 to perform short-side terminal detection on the test piece. The second slide 46 is an electric slide.

[0047] In a preferred embodiment, the feeding unit 2 further includes a roller mechanism 21, and the test piece is fed through the roller mechanism 21 and the first transfer mechanism 20 in sequence.

[0048] Specifically, the roller mechanism 21 includes a roller frame, a rolling transmission assembly, a movable clamping assembly, and a limiting baffle. The roller frame is mounted on the base 1. The rolling transmission assembly can carry the test piece and drive it to move along the first direction. The movable clamping assembly can limit the test piece in the second direction to prevent it from deviating during movement. The limiting baffle is located at the end of the rolling transmission assembly to prevent the test piece from falling off.

[0049] In detail, the first camera mounting bracket 30 is also provided with a first lifting drive component, and the second camera module 32 is mounted on the movable end of the first lifting drive component so as to be lifted and lowered under the drive of the first lifting drive component; the first camera mounting bracket 30 is also provided with a slide rail 36 along the second direction, and the first camera module 31 is slidably connected to the slide rail 36 and can move along the second direction.

[0050] In a preferred embodiment, in order to protect the test piece during the testing process, the first buffer plate 33, the second buffer plate, and the third buffer plate are all made of flexible materials, including but not limited to silicone.

[0051] Specifically, the LCD screen appearance inspection equipment also includes a feeding unit 5, which is disposed on the base 1 and adjacent to the second inspection unit 4, so as to transfer and feed the test piece after the inspection is completed.

[0052] The unloading unit includes a first unloading and conveying component 51 and a second unloading and conveying component 52. The first unloading and conveying component 51 is used to unload and convey test pieces with qualified test results; the second unloading and conveying component 52 is used to unload and convey test pieces with unqualified (NG) test results.

[0053] In addition, in order to further improve the detection efficiency and ensure the accuracy of the detection, the LCD screen appearance inspection equipment is also provided with a re-judgment area. The re-judgment area is adjacent to the unloading unit. In detail, the re-judgment area is adjacent to the end of the second unloading transmission component.

[0054] The re-judgment area is equipped with a workbench, a barcode scanning platform, and a barcode scanner. Operators re-judge non-conforming products in the re-judgment area.

[0055] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0057] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An LCD screen appearance inspection device, used for appearance inspection of the part to be tested, characterized in that: include, Base; A feeding unit is disposed on the base. The feeding unit includes a first transfer mechanism, under which the test piece is moved to a designated position by the first transfer mechanism. The first detection unit includes a first camera mounting bracket, a first camera module, a second camera module, and a first adsorption assembly. The first camera mounting bracket is disposed on the base, and the first camera module and the second camera module are movably disposed on the first camera mounting bracket. The first adsorption assembly is slidably disposed on the base along a first direction and is movable below the first camera module and the second camera module. The first adsorption assembly includes a first buffer plate and a first suction nozzle assembly. The first buffer plate has a through hole along its thickness direction, and the first suction nozzle assembly is disposed in the through hole to adsorb the test piece. When the test piece is adsorbed, it adheres to the first buffer plate. The first camera module acquires images of the upper surface of the test piece, and the second camera module acquires images of the long side terminal of the test piece. The second detection unit includes a second transfer mechanism, a second camera mounting bracket, a third camera module, a fourth camera module, a second adsorption component, and a third adsorption component. The second transfer mechanism is disposed on the base along the first direction, and the second adsorption component is disposed on the movable end of the second transfer mechanism. The third adsorption component is slidably disposed on the base along a second direction, which is perpendicular to the first direction. The third camera module is disposed below the second transfer mechanism and faces the second adsorption component to acquire images of the lower surface of the test piece. The fourth camera module is disposed on the second camera mounting bracket to acquire images of the short-side terminals of the test piece.

2. The LCD screen appearance inspection device according to claim 1, characterized in that: The second adsorption assembly includes a second buffer plate and a second suction nozzle assembly. The second buffer plate has a through hole along its thickness direction, and the second suction nozzle assembly is disposed in the through hole to adsorb the test piece. When the test piece is adsorbed, it adheres to the second buffer plate.

3. The LCD screen appearance inspection device according to claim 1, characterized in that: The third adsorption component includes a third buffer plate and a third suction nozzle assembly. The third buffer plate has through holes along its thickness direction, and the third suction nozzle assembly is disposed in the through holes to adsorb the test piece. When the test piece is adsorbed, it adheres to the third buffer plate.

4. The LCD screen appearance inspection device according to claim 1, characterized in that: The first detection unit further includes a first slide, which extends along a first direction and is disposed on the base. The first camera mounting bracket is located above the first slide, and the first adsorption component is connected to the movable end of the first slide.

5. The LCD screen appearance inspection device according to claim 1, characterized in that: The second detection unit further includes a second slide, which extends along a second direction and is disposed on the base. The second camera mounting bracket is located above the second slide, and the third adsorption component is disposed at the movable end of the second slide.

6. The LCD screen appearance inspection device according to claim 1, characterized in that: The feeding unit also includes a roller mechanism, through which the test piece passes sequentially between the roller mechanism and the first transfer mechanism for feeding and transfer.

7. The LCD screen appearance inspection device according to claim 1, characterized in that: The first camera mounting bracket is also provided with a slide rail along the second direction, the first camera module is slidably connected to the slide rail and can move along the second direction; the first camera mounting bracket is also provided with a first lifting drive component, and the second camera module is mounted on the movable end of the first lifting drive component.

8. The LCD screen appearance inspection device according to claim 1, characterized in that: The first buffer plate is made of a flexible material.

9. An LCD screen appearance inspection device according to any one of claims 1-8, characterized in that: It also includes a feeding unit, which is disposed on the base and adjacent to the second detection unit, for transferring and feeding the test piece after the detection is completed.

10. The LCD screen appearance inspection device according to claim 9, characterized in that: A re-judgment area is also provided, which is adjacent to the unloading unit. The re-judgment area is equipped with a workbench, a barcode scanning platform and a barcode scanner. Operators re-judge unqualified products in the re-judgment area.

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