Backlight module detection data acquisition auxiliary tool

Abstract

The utility model belongs to the technical field of backlight module detection, and particularly relates to a backlight module detection data acquisition auxiliary tool which comprises a base, the top of the base is in sliding connection with a moving table, and the top of the moving table is provided with a detection table used for placing a backlight module. A height adjusting mechanism is arranged between the detection table and the moving table, and a clamping and centering mechanism used for clamping and fixing the backlight module is arranged on the detection table. The liquid crystal backlight module detection device is reasonable in structural design, the two clamping plates can synchronously move towards the inner side to clamp, center and fix the backlight module, it is guaranteed that the backlight module is located at the center, the detection accuracy is improved, when the liquid crystal backlight module is detected, a polaroid can be rotated to the position under a lens of an industrial camera, reflected light and glare can be eliminated, and the detection precision is improved. The contrast and definition of the image are improved, and fine features and defects of the backlight module can be detected more accurately.

Description

Technical Field

[0001] This utility model relates to the field of backlight module testing technology, and in particular to an auxiliary tool for backlight module testing data acquisition. Background Technology

[0002] The backlight module is one of the key components of an LCD panel. Its function is to provide sufficient brightness and a uniformly distributed light source so that images can be displayed normally. After the backlight module is assembled, it needs to be tested, which requires the use of backlight module test data acquisition auxiliary tools.

[0003] However, the backlight module detection data acquisition auxiliary tools in related technologies still have shortcomings. Generally, two cylinders or electric push rods are used to clamp the backlight module from both sides, but the synchronization of the cylinder operation cannot be guaranteed. This makes the backlight module prone to displacement and not in the center position during fixing, which can affect the accuracy of detection. Furthermore, it is inconvenient to use industrial cameras or polarizers to eliminate reflected light and glare for liquid crystal backlight modules, which reduces the contrast and clarity of the image and makes it impossible to more accurately detect the orientation and defects of liquid crystal molecules in the backlight module. Therefore, we propose a backlight module detection data acquisition auxiliary tool to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings mentioned above by proposing an auxiliary tool for backlight module detection data acquisition.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A backlight module testing data acquisition auxiliary tool includes a base, a movable stage slidably connected to the top of the base, a testing platform for placing the backlight module on the top of the movable stage, a height adjustment mechanism between the testing platform and the movable stage, a clamping and centering mechanism for clamping and fixing the backlight module on the testing platform, a gantry frame fixedly connected to the top of the base, a motor fixedly connected to one side of the gantry frame, a threaded rod fixedly connected to the output shaft of the motor, a drive frame threaded onto the outer side of the threaded rod, an industrial camera for data acquisition from the backlight module fixedly connected to the bottom of the drive frame, a polarizer mechanism on the drive frame, a groove on the top of the base, a second motor fixedly connected to the front of the base, a feed screw fixedly connected to the output shaft of the second motor, a slide plate threaded onto the outer side of the feed screw, the slide plate fixedly connected to the bottom of the movable stage, and strip lights fixedly connected to the inner walls of both sides of the gantry frame.

[0007] As a preferred embodiment of this utility model, the height adjustment mechanism includes a motor three fixedly connected to the top of the moving platform. A bidirectional lead screw is fixedly connected to the output shaft of the motor three. Two transverse sliding plates are threaded on the outer side of the bidirectional lead screw. Two diagonal braces are rotatably connected to the front side of the two transverse sliding plates. The top ends of the two diagonal braces are rotatably connected to the bottom of the detection platform.

[0008] As a preferred embodiment of this invention, four telescopic rods are fixedly connected between the moving platform and the detection platform, and both of the transverse plates are slidably connected to the top of the moving platform.

[0009] In a preferred embodiment of this invention, the testing platform has a cavity, and the top of the testing platform has two sliding grooves. The clamping and centering mechanism includes a cylinder fixedly connected to the top of the testing platform, a gear rotatably connected to the inner walls of the front and rear sides of the cavity, and two racks slidably disposed in the cavity. The gear meshes with the two racks, and each of the two racks has a movable plate fixedly connected to one end that is far apart from each other. The output shaft of the cylinder is fixedly connected to one side of the corresponding movable plate. A buffer spring is fixedly connected to the inner side of the movable plate, and a clamping plate is fixedly connected to one end of the buffer spring. A rubber pad is fixedly connected to one side of the clamping plate.

[0010] As a preferred embodiment of this invention, a fixed base is fixedly connected to the top of the testing platform, and the cylinder is fixedly connected to one side of the fixed base.

[0011] In a preferred embodiment of this invention, the same guide rod is fixedly connected to the inner walls of both sides of the slide groove, and the two movable plates are respectively slidably sleeved in the corresponding guide rods. The same damper is fixedly connected between the clamping plate and the movable plate.

[0012] In a preferred embodiment of this invention, the polarizer mechanism includes a motor four fixedly connected to the inner wall of the bottom of the drive frame and a rotating shaft rotatably connected to the bottom of the drive frame. A drive gear is fixedly connected to the output shaft of the motor four, and a driven gear is fixedly sleeved on the outer side of the rotating shaft. The drive gear and the driven gear mesh with each other. A connecting frame is fixedly connected to the lower end of the rotating shaft, and a screw is threadedly connected to the top of the connecting frame. A pressure plate is rotatably connected to the lower end of the screw. A polarizer is movably abutted between the pressure plate and the connecting frame. A counterweight is fixedly connected to one side of the connecting frame, and the pressure plate is slidably disposed within the connecting frame.

[0013] As a preferred embodiment of this utility model, the same crossbar is fixedly connected to the inner walls of both sides of the gantry frame, the drive frame is slidably sleeved on the outside of the crossbar, and two guide grooves are opened on the top of the base, with guide blocks slidably sleeved in the guide grooves, and both guide blocks are fixedly connected to the bottom of the moving platform.

[0014] In this utility model, a backlight module detection data acquisition auxiliary tool uses a cylinder to drive a movable plate and rack to move inward. Through the meshing transmission of two racks and gears, the two racks and movable plate move synchronously inward. The two movable plates drive two clamping plates to move inward, clamping and centering the backlight module, thus ensuring the backlight module is in the center position and improving detection accuracy. A motor drives the rotation of a bidirectional lead screw, which in turn moves two horizontal plates and diagonal braces closer or further apart. The two diagonal braces then drive the lifting and lowering of the detection table and the backlight module. The distance between the backlight module and the industrial camera can be adjusted to allow the industrial camera to better collect data from the backlight module, enabling it to clearly capture the subtle features and defects on the backlight module's surface. A strip light can supplement the light source for the industrial camera, making the images clearer. Motor 2 drives the rotation of the feed screw, which in turn drives the slide plate and inspection table to move forward or backward. Motor 1 drives the rotation of the threaded rod, which in turn drives the drive frame and the industrial camera to move left and right. This allows the industrial camera to comprehensively collect data from the backlight module, making the inspection more comprehensive and accurate.

[0015] In this utility model, a backlight module detection data acquisition auxiliary tool is described. When it is necessary to detect an LCD backlight module, a polarizer is required. The polarizer can be used to adjust the polarization direction of light, eliminate reflected light and glare, and improve the contrast and clarity of the image. At this time, a drive motor four drives the rotation of the active gear, which in turn drives the rotation of the driven gear. The driven gear drives the rotation of the rotating shaft and the connecting frame. The connecting frame rotates the polarizer to be directly below the lens of the industrial camera. The polarizer can be used to adjust the polarization direction of light, eliminate reflected light and glare, and improve the contrast and clarity of the image, which helps to more accurately detect the subtle features and defects of the backlight module.

[0016] This utility model has a reasonable structural design. The two clamping plates can move inward synchronously to clamp and center the backlight module, ensuring that the backlight module is located in the center, thus improving the accuracy of the inspection. When inspecting the LCD backlight module, the polarizer can be rotated to be directly below the lens of the industrial camera, which can eliminate reflected light and glare, improve the contrast and clarity of the image, and help to more accurately detect the subtle features and defects of the backlight module. Attached Figure Description

[0017] Figure 1 This is a first-view perspective stereoscopic view of a backlight module detection data acquisition auxiliary tool proposed in this utility model;

[0018] Figure 2 This is a second-view perspective stereoscopic view of a backlight module detection data acquisition auxiliary tool proposed in this utility model;

[0019] Figure 3 for Figure 2 A partial structural diagram of part A;

[0020] Figure 4 This is a cross-sectional view of the testing platform of a backlight module testing data acquisition auxiliary tool proposed in this utility model.

[0021] In the diagram: 1. Base; 2. Gantry frame; 3. Moving stage; 4. Inspection table; 5. Height adjustment mechanism; 6. Guide block; 7. Groove; 8. Polarizing mechanism; 9. Clamping and centering mechanism; 10. Motor II; 11. Feed screw; 12. Slide plate; 13. Strip light; 14. Threaded rod; 15. Drive frame; 16. Industrial camera; 17. Motor I; 18. Crossbar; 51. Telescopic rod; 52. Diagonal brace; 53. Bidirectional screw; 54. Transverse plate; 55. 81. Motor 3; 82. Driving gear; 83. Driven gear; 84. Rotating shaft; 85. Connecting frame; 86. Counterweight; 87. Screw; 88. Pressure plate; 89. Polarizing film; 901. Cylinder; 902. Fixed base; 903. Movable plate; 904. Damper; 905. Buffer spring; 906. Clamping plate; 907. Rubber pad; 908. Guide rod; 909. Rack; 910. Gear; 911. Cavity; 912. Slide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 A backlight module testing data acquisition auxiliary tool includes a base 1, a movable stage 3 slidably connected to the top of the base 1, a testing platform 4 for placing the backlight module on the top of the movable stage 3, a height adjustment mechanism 5 between the testing platform 4 and the movable stage 3, and a clamping and centering mechanism 9 for clamping and fixing the backlight module on the testing platform 4. A gantry frame 2 is fixedly connected to the top of the base 1, a motor 17 is fixedly connected to one side of the gantry frame 2, and a threaded rod 14 is fixedly connected to the output shaft of the motor 17. A drive frame 15 is threaded on the outer side of the threaded rod 14. An industrial camera 16 for data acquisition of the backlight module is fixedly connected to the bottom of the drive frame 15. A polarizer mechanism 8 is provided on the drive frame 15. A groove 7 is provided on the top of the base 1. A motor 2 10 is fixedly connected to the front side of the base 1. A feed screw 11 is fixedly connected to the output shaft of the motor 2 10. A slide plate 12 is threaded on the outer side of the feed screw 11. The slide plate 12 is fixedly connected to the bottom of the moving table 3. Strip lights 13 are fixedly connected to the inner walls on both sides of the gantry 2.

[0024] The above solution is as follows: the strip light 13 can supplement the light source of the industrial camera 16, making its shooting clearer; the second motor 10 drives the rotation of the feed screw 11, which in turn drives the slide plate 12 and the inspection table 4 to move forward or backward; the first motor 17 drives the rotation of the threaded rod 14, which drives the drive frame 15 and the industrial camera 16 to move left and right, so that the industrial camera 16 can comprehensively collect data from the backlight module, making the inspection more comprehensive and accurate.

[0025] Furthermore, refer to Figure 1 and Figure 2 The height adjustment mechanism 5 includes a motor 55 fixedly connected to the top of the moving platform 3. A two-way lead screw 53 is fixedly connected to the output shaft of the motor 55. Two transverse sliding plates 54 are threaded on the outer side of the two-way lead screw 53. Two diagonal braces 52 are rotatably connected to the front side of the two transverse sliding plates 54. The top ends of the two diagonal braces 52 are rotatably connected to the bottom of the detection platform 4. Four telescopic rods 51 are fixedly connected between the moving platform 3 and the detection platform 4. The two transverse sliding plates 54 are slidably connected to the top of the moving platform 3.

[0026] The above solution is adopted: the rotation of the bidirectional lead screw 53 is driven by the motor 3 55. The bidirectional lead screw 53 drives the two transverse plates 54 and the diagonal brace 52 to move closer or further apart. The two diagonal braces 52 drive the lifting and lowering of the inspection table 4 and the backlight module, thereby adjusting the distance between the backlight module and the industrial camera 16 so that the industrial camera 16 can better collect data from the backlight module and clearly capture the fine features and defects on the surface of the backlight module.

[0027] Furthermore, refer to Figure 1 , Figure 2 and Figure 4 The testing platform 4 has a cavity 911 inside, and two sliding grooves 912 are opened on the top of the testing platform 4. The clamping and centering mechanism 9 includes a cylinder 901 fixedly connected to the top of the testing platform 4, a gear 910 rotatably connected to the inner walls of the front and rear sides of the cavity 911, and two racks 909 slidably arranged in the cavity 911. The gear 910 meshes with the two racks 909. The ends of the two racks 909 that are far apart from each other are fixedly connected to a movable plate 903. The output shaft of the cylinder 901 is fixedly connected to one side of the corresponding movable plate 903. A buffer spring 905 is fixedly connected to the inner side of the movable plate 903. A clamping plate 906 is fixedly connected to one end of the buffer spring 905. A rubber pad 907 is fixedly connected to one side of the clamping plate 906.

[0028] The above solution involves placing the backlight module to be tested on top of the testing platform 4. The output shaft of cylinder 901 drives a movable plate 903 and a rack 909 to move inward. Through the meshing transmission of the two racks 909 and gear 910, the two racks 909 and the movable plate 903 move inward synchronously. The two movable plates 903 drive the two clamping plates 906 to move inward to clamp and center the backlight module. The rubber pad 907, damper 904 and buffer spring 905 provide buffer protection to prevent excessive clamping force from damaging the backlight module. This ensures that the backlight module is in the center position and improves the accuracy of the test.

[0029] Furthermore, a fixed base 902 is fixedly connected to the top of the testing platform 4, and the cylinder 901 is fixedly connected to one side of the fixed base 902, which facilitates the installation and fixation of the cylinder 901.

[0030] Furthermore, the same guide rod 908 is fixedly connected to the inner walls of both sides of the slide 912, and the two movable plates 903 are respectively slidably sleeved in the corresponding guide rods 908. The same damper 904 is fixedly connected between the clamping plate 906 and the movable plate 903, which facilitates the guidance of the movable plate 903 and the clamping plate 906, making their movement more stable.

[0031] Furthermore, refer to Figures 1-3 The polarizer mechanism 8 includes a motor 81 fixedly connected to the inner wall of the bottom of the drive frame 15 and a rotating shaft 84 rotatably connected to the bottom of the drive frame 15. A drive gear 82 is fixedly connected to the output shaft of the motor 81. A driven gear 83 is fixedly sleeved on the outer side of the rotating shaft 84. The drive gear 82 and the driven gear 83 mesh with each other. A connecting frame 85 is fixedly connected to the lower end of the rotating shaft 84. A screw 87 is threadedly connected to the top of the connecting frame 85. A pressure plate 88 is rotatably connected to the lower end of the screw 87. A polarizer 89 is movably abutted between the pressure plate 88 and the connecting frame 85. A counterweight 86 is fixedly connected to one side of the connecting frame 85. The pressure plate 88 is slidably disposed inside the connecting frame 85.

[0032] Using the above solution: When it is necessary to inspect the LCD backlight module, a polarizer 89 is required. The polarizer can be used to adjust the polarization direction of light, eliminate reflected light and glare, and improve the contrast and clarity of the image. At this time, the drive motor 81 drives the output shaft of the drive motor 81 to rotate the active gear 82, which in turn drives the driven gear 83 to rotate. The driven gear 83 drives the rotating shaft 84 and the connecting frame 85 to rotate. The connecting frame 85 rotates the polarizer 89 to be directly below the lens of the industrial camera 16. The polarizer 89 can be used to adjust the polarization direction of light, eliminate reflected light and glare, and improve the contrast and clarity of the image, which helps to more accurately detect the subtle features and defects of the backlight module.

[0033] Furthermore, the same crossbar 18 is fixedly connected to the inner walls of both sides of the gantry frame 2. The drive frame 15 is slidably sleeved on the outside of the crossbar 18. Two guide grooves are opened on the top of the base 1. Guide blocks 6 are slidably sleeved in the guide grooves. Both guide blocks 6 are fixedly connected to the bottom of the moving platform 3, which facilitates the guidance of the drive frame 15 and the moving platform 3, making their movement more stable.

[0034] In this invention, during use, the backlight module to be tested is placed on top of the testing platform 4. The output shaft of cylinder 901 drives a movable plate 903 and a rack 909 to move inward. Through the meshing transmission of the two racks 909 and gear 910, the two racks 909 and the movable plate 903 move inward synchronously. The two movable plates 903 drive the two clamping plates 906 to move inward to clamp and center the backlight module. The rubber pad 907, damper 904, and buffer spring 905 provide buffer protection to prevent excessive clamping force from damaging the backlight module, thus ensuring that the backlight module is in the center position and improving the accuracy of the test. Motor 3 55 drives the rotation of the bidirectional lead screw 53, which in turn drives the two transverse plates 54 and the diagonal brace 52. The two diagonal braces 52 move the inspection table 4 and the backlight module closer or further apart, thereby adjusting the distance between the backlight module and the industrial camera 16. This allows the industrial camera 16 to better collect data from the backlight module and clearly capture the subtle features and defects on its surface. The strip light 13 provides supplementary light to the industrial camera 16, making the images clearer. The second motor 10 drives the feed screw 11 to rotate, which in turn drives the slide plate 12 and the inspection table 4 to move forward or backward. The first motor 17 drives the threaded rod 14 to rotate, which in turn drives the drive frame 15 and the industrial camera 16 to move left and right. This allows the industrial camera 16 to collect data from the backlight module comprehensively, making the inspection more comprehensive and accurate.

[0035] When the LCD backlight module needs to be inspected, a polarizer 89 is used. The polarizer can be used to adjust the polarization direction of light, eliminate reflected light and glare, and improve the contrast and clarity of the image. At this time, the drive motor 81 drives the output shaft of the drive gear 82 to rotate, the drive gear 82 drives the driven gear 83 to rotate, and the driven gear 83 drives the rotating shaft 84 and the connecting frame 85 to rotate. The connecting frame 85 drives the polarizer 89 to rotate directly below the lens of the industrial camera 16. The polarizer 89 can be used to adjust the polarization direction of light, eliminate reflected light and glare, improve the contrast and clarity of the image, and help to more accurately detect the subtle features and defects of the backlight module.

Claims

1. A backlight module detection data collection assistant tool, characterized in that, The system includes a base (1), a movable platform (3) slidably connected to the top of the base (1), a testing platform (4) for placing the backlight module is provided on the top of the movable platform (3), a height adjustment mechanism (5) is provided between the testing platform (4) and the movable platform (3), and a clamping and centering mechanism (9) for clamping and fixing the backlight module is provided on the testing platform (4). A gantry frame (2) is fixedly connected to the top of the base (1), a motor (17) is fixedly connected to one side of the gantry frame (2), and a threaded rod (14) is fixedly connected to the output shaft of the motor (17). The outer thread of the threaded rod (14) is... A drive frame (15) is provided, and an industrial camera (16) for data acquisition of the backlight module is fixedly connected to the bottom of the drive frame (15). A polarizer mechanism (8) is provided on the drive frame (15). A groove (7) is provided on the top of the base (1). A motor (10) is fixedly connected to the front side of the base (1). A feed screw (11) is fixedly connected to the output shaft of the motor (10). A slide plate (12) is threaded on the outer side of the feed screw (11). The slide plate (12) is fixedly connected to the bottom of the moving table (3). Strip lights (13) are fixedly connected to the inner walls on both sides of the gantry (2).

2. The data acquisition tool of claim 1, wherein, The height adjustment mechanism (5) includes a motor three (55) fixedly connected to the top of the moving platform (3). A two-way lead screw (53) is fixedly connected to the output shaft of the motor three (55). Two transverse sliding plates (54) are threaded on the outer side of the two-way lead screw (53). Two diagonal braces (52) are rotatably connected to the front side of the two transverse sliding plates (54). The top ends of the two diagonal braces (52) are rotatably connected to the bottom of the detection platform (4).

3. The backlight module detection data acquisition auxiliary tool according to claim 2, characterized in that, Four telescopic rods (51) are fixedly connected between the moving stage (3) and the detection stage (4), and the two transverse plates (54) are slidably connected to the top of the moving stage (3).

4. The data acquisition tool of claim 1, wherein, The testing platform (4) has a cavity (911) and two sliding grooves (912) on its top. The clamping and centering mechanism (9) includes a cylinder (901) fixedly connected to the top of the testing platform (4), a gear (910) rotatably connected to the inner walls of the front and rear sides of the cavity (911), and two racks (909) slidably disposed in the cavity (911). The gear (910) meshes with the two racks (909). The ends of the two racks (909) that are far apart from each other are fixedly connected to a movable plate (903). The output shaft of the cylinder (901) is fixedly connected to one side of the corresponding movable plate (903). A buffer spring (905) is fixedly connected to the inner side of the movable plate (903). One end of the buffer spring (905) is fixedly connected to a clamping plate (906). One side of the clamping plate (906) is fixedly connected to a rubber pad (907).

5. The backlight module detection data acquisition auxiliary tool according to claim 4, characterized in that, The top of the testing platform (4) is fixedly connected to a fixing seat (902), and the cylinder (901) is fixedly connected to one side of the fixing seat (902).

6. The data acquisition tool of claim 4, wherein the data acquisition tool is configured to detect the presence of the backlight module by detecting the presence of the light source. The same guide rod (908) is fixedly connected to the inner walls of both sides of the slide (912), and the two movable plates (903) are respectively slidably sleeved in the corresponding guide rod (908). The same damper (904) is fixedly connected between the clamping plate (906) and the movable plate (903).

7. The data acquisition tool of claim 1, wherein the data acquisition tool is a backlight module inspection data acquisition tool. The polarizer mechanism (8) includes a motor (81) fixedly connected to the inner wall of the bottom of the drive frame (15) and a rotating shaft (84) rotatably connected to the bottom of the drive frame (15). A drive gear (82) is fixedly connected to the output shaft of the motor (81). A driven gear (83) is fixedly sleeved on the outer side of the rotating shaft (84). The drive gear (82) meshes with the driven gear (83). A connecting frame (85) is fixedly connected to the lower end of the rotating shaft (84). A screw (87) is threadedly connected to the top of the connecting frame (85). A pressure plate (88) is rotatably connected to the lower end of the screw (87). A polarizer (89) is movably abutted between the pressure plate (88) and the connecting frame (85). A counterweight (86) is fixedly connected to one side of the connecting frame (85). The pressure plate (88) is slidably disposed inside the connecting frame (85).

8. The backlight module detection data acquisition auxiliary tool according to claim 1, characterized in that, The same crossbar (18) is fixedly connected to the inner walls of both sides of the gantry (2). The drive frame (15) is slidably sleeved on the outside of the crossbar (18). Two guide grooves are opened on the top of the base (1). Guide blocks (6) are slidably sleeved in the guide grooves. Both guide blocks (6) are fixedly connected to the bottom of the moving platform (3).

Images