Defect inspection device for optical composite film

Abstract

The utility model provides a defect inspection device for an optical composite film. The defect inspection device comprises an inspection table, two ion fans and an air purifier, wherein the two ion fans are arranged above the inspection table in parallel; the air purifier is arranged between the two ion fans; the shear shank is driven to ascend and descend through the driving mechanism, then the lamp panel on the lifting base is driven to ascend and descend, the distance between the lamp panel and the containing platform is adjusted, meanwhile, the brightness of the lamp panel is adjusted in cooperation with a gear button on the device body, and then the range of the light intensity after light generated by the lamp panel is transmitted to the containing platform is adjusted; the light intensity on the placing platform can meet the inspection requirements of different optical composite films, so that the inspection accuracy of the optical composite films is improved, and the application range of the device is widened. Meanwhile, a pneumatic clamp is arranged to clamp and fix the optical composite film, and the situation that the inspection accuracy is affected by movement of the optical composite film during inspection is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of optical composite film inspection, in particular to a defect inspection device for an optical composite film. Background Art

[0002] Optical composite films play a crucial role in liquid crystal display televisions. They are mainly applied in backlight modules and can enhance the brightness, contrast, and color saturation of the picture, enabling viewers to obtain a clearer and more realistic visual experience. The production process of optical composite films involves complex processes such as the lamination of multiple layers of materials, precision coating, and optical processing. Any minor deviation in these process steps may result in product defects, such as bubbles, scratches, stains, cracks, etc. These defects not only affect the appearance of the product but may also seriously impact the optical performance. Therefore, the produced optical composite films are inspected for defects under a certain light.

[0003] However, due to factors such as the material, thickness, color, and inspection requirements of the optical composite film, the required light intensity for inspecting different optical composite films is different. When the light intensity is too strong, glare or reflection phenomena will occur on the optical composite film, affecting the visual judgment of the inspector; while when the light intensity is insufficient, the details on the optical composite film are difficult to clearly present. Therefore, to meet the inspection light intensity requirements of different optical composite films, it is necessary to provide a defect inspection table for an optical composite film that is convenient for adjusting the light intensity. Summary of the Utility Model

[0004] Aiming at the technical problem in the prior art that different optical composite films require different lighting conditions during inspection due to factors such as material, thickness, color, and inspection requirements, the utility model provides a defect inspection table for an optical composite film that is convenient for adjusting the light intensity.

[0005] A defect inspection device for an optical composite film, comprising an inspection table, two ion blowers arranged in parallel above the inspection table, and an air purifier arranged between the two ion blowers; the inspection table includes a device body, a light guide plate is arranged above the device body, and the light guide plate is recessed inward to form a placement platform; a plurality of pneumatic clamps for fixing the optical composite film are arranged at the edge of the placement platform; a lamp panel, a lifting assembly and a controller are arranged in the device body; a gear button for controlling the brightness of the lamp panel is arranged on the device body, and the gear button is electrically connected to the lamp panel through the controller; the lifting assembly includes a base arranged at the bottom of the device body, a lifting seat arranged on the base, a scissors frame arranged between the base and the lifting seat, and a driving mechanism for driving the scissors frame to lift; the lamp panel is arranged on the lifting seat, and its light-emitting surface faces the light guide plate; the driving mechanism is electrically connected to the controller; a set of first slide rails are respectively arranged at both ends of one side of the base, a set of first pulleys slidably connected to the first slide rails are respectively arranged at both ends of one side of the bottom of the scissors frame, and both ends of the other side of the bottom of the scissors frame are respectively hinged to the base; a set of second slide rails are respectively arranged at both ends of one side of the lifting seat, a set of second pulleys slidably connected to the second slide rails are respectively arranged at both ends of one side of the top of the scissors frame, and both ends of the other side of the top of the scissors frame are respectively hinged to the base; the first slide rails and the second slide rails are on the same side.

[0006] Further, the driving mechanism includes a guide rod and a hydraulic cylinder, the guide rod is arranged on the scissors frame, the hydraulic cylinder is electrically connected to the controller, and a telescopic shaft is arranged at the output end of the hydraulic cylinder, and the other end of the telescopic shaft is fixedly connected to the guide rod.

[0007] Further, the lamp panel includes a lamp holder fixedly arranged on the lifting seat, and a lamp board is detachably installed on the lamp holder.

[0008] Further, the lamp board includes a fixing plate and a plurality of lamp strips arranged in an array on the fixing plate, the lamp strips are connected in series in sequence, and a plurality of LED lamp beads are equally spaced and arranged on the lamp strips.

[0009] Further, the lamp board includes a fixing plate and a plurality of lighting modules arranged in an array on the fixing plate, the lighting module includes a plurality of lamp strips connected in series in sequence, and a plurality of LED lamp beads are equally spaced and arranged on the lamp strips.

[0010] Further, a light intensity sensor for detecting the light intensity of the light guide plate is arranged on one side of the bottom of the light guide plate; a display screen is arranged on the device body, and the display screen and the light intensity sensor are respectively electrically connected to the controller; the display screen is used for displaying the detection data of the light intensity sensor.

[0011] Further, a plurality of air inlets and a plurality of air outlets are provided on the ion blower, the air inlets and the air outlets correspond to each other one by one, a air duct is formed between the air inlet and the corresponding air outlet of each ion blower, and the air outlets all face the inspection table.

[0012] Further, an air pump is further provided on one side of the device body, the air pump is connected to the pneumatic clamp through a trachea, and a vacuum valve is provided on the trachea.

[0013] Further, a control button for controlling the lifting of the scissors lift is further provided on the device body, and the control button is electrically connected to the controller.

[0014] Further, a plurality of support columns are provided at the bottom of the device body, a guide wheel is provided on each support column, and a locking mechanism is provided on the guide wheel.

[0015] The beneficial effects of the present utility model are as follows: The present utility model provides a defect inspection device for an optical composite film, which includes an inspection table, an ion blower arranged above the inspection table, and an air purifier arranged on one side of the inspection table; a driving mechanism is used to drive the scissors lift to lift, and then drive the lamp panel on the lifting seat to lift, so as to adjust the distance between the lamp panel and the placement platform. At the same time, the brightness of the lamp panel is adjusted in cooperation with the gear button on the device body, so as to realize the adjustment of the light intensity range after the light generated by the lamp panel is transmitted to the placement platform, so that the light intensity on the placement platform can adapt to the inspection requirements of different optical composite films, which is beneficial to improving the accuracy of the optical composite film inspection and the applicable range of the device. At the same time, a pneumatic clamp is also provided to clamp and fix the optical composite film to prevent the movement of the optical composite film during inspection from affecting the inspection accuracy. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a defect inspection device for an optical composite film provided by the present utility model;

[0017] Figure 2 is a schematic cross-sectional structural diagram of a defect inspection device for an optical composite film provided by the present utility model;

[0018] Figure 3 is a schematic structural diagram of the lifting assembly provided by the present utility model;

[0019] Figure 4 is a schematic structural diagram of the lamp panel provided in Embodiment 1 of the present utility model;

[0020] Figure 5 is a schematic structural diagram of the lamp panel provided in Embodiment 2 of the present utility model.

[0021] Reference Signs

[0022] 1. Inspection table; 101. Device body; 102. Light guide plate; 103. Placement platform; 2. Ion blower; 3. Air purifier; 4. Pneumatic clamp; 5. Lamp panel; 51. Lamp holder; 52. Lamp board; 521. Lamp strip; 522. Lamp bead; 6. Controller; 7. Lifting assembly; 71. Base; 711. First slide rail; 712. First pulley; 72. Lifting seat; 73. Scissor lift; 731. First slide rail; 732. Second pulley; 74. Driving mechanism; 741. Guide rod; 742. Hydraulic cylinder; 743. Telescopic shaft; 8. Gear button; 9. Light intensity sensor; 10. Display screen; 11. Control button; 12. Support column; 13. Guide wheel; 14. Locker. Detailed implementation mode

[0023] In order to enable those skilled in the art of the present technology to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0024] Embodiment 1

[0025] Refer to Figure 1 As shown, a defect inspection device for an optical composite film includes an inspection table 1, two ion blowers 2 arranged in parallel above the inspection table 1, and an air purifier 3 arranged between the two ion blowers 3.

[0026] The ion blower 2 generates a large number of positive and negative ions, and these ions are blown by the high-speed air flow onto the surface of the charged optical composite film. When the positive and negative ions meet the static charges on the surface of the optical composite film on the inspection table 1, a neutralization reaction will occur, thereby eliminating the static electricity on the surface of the optical composite film and effectively preventing the re-adsorption of dust on the optical composite film. The air purifier 3 is used to remove harmful gases, odors and finer particulate matter in the air in the inspection area, ensuring that the air in the inspection area meets a high cleanliness standard. Through the setting of the air purifier 3 and the ion blower 2, the cleanliness of the air in the inspection environment can be effectively maintained, and at the same time, the optical composite film is prevented from adsorbing external dust and particles during inspection, avoiding contamination during the inspection process of the optical composite film.

[0027] Specifically, a plurality of air inlets and a plurality of air outlets are provided on the ion blower 2. The air inlets and the air outlets correspond to each other one by one. A wind channel is formed between the air inlet and the corresponding air outlet of each ion blower 2, and all the air outlets face the inspection table 1 to blow air onto the optical composite film on the inspection table 1. Each air outlet corresponds to an air inlet to form an independent air channel. The ion blower can blow the ion air flow more evenly onto the surface of the inspection table, accelerating the diffusion and distribution of ions in the air, thereby neutralizing the static electricity on the surface of the optical composite film on the inspection table more quickly.

[0028] Reference Figure 1 and Figure 2 As shown, the inspection table 1 includes a device body 101, and a light guide plate 102 is provided above the device body. The light guide plate 102 is recessed inward to form a placement platform 103. When inspecting the optical composite film, the optical composite film is placed on the placement platform 103 with light guiding performance to inspect the defects of the optical composite film.

[0029] A plurality of pneumatic clamps 4 for fixing the optical composite film are provided at the edge of the placement platform 103. Among them, an air pump is further provided on one side of the device body 101. The air pump is connected to the pneumatic clamp 4 through a trachea, and a vacuum valve is provided on the trachea.

[0030] The air pump serves as a power source to generate high-pressure gas by compressing air. When the air pump is started, the high-pressure gas can be directly transmitted through the trachea. The high-pressure gas is transmitted from the air pump through the trachea. When the vacuum valve is opened, the high-pressure gas enters the pneumatic clamp 4 to clamp and fix the optical composite film. When the vacuum valve is closed, the gas supply is cut off, and the pneumatic clamp 4 releases the optical composite film. In this embodiment, the clamping surface of the clamping part of the pneumatic clamp 4 is on the same horizontal line as the plane of the placement platform 103, ensuring that after the pneumatic clamp 4 clamps the optical composite film, it can be placed flat on the placement platform 103.

[0031] A lamp panel 5, a lifting assembly 7 and a controller 6 are provided inside the device body. A gear button 8 for controlling the brightness of the lamp panel 5 is provided on the device body 101. The gear button 8 is electrically connected to the lamp panel 5 through the controller 6.

[0032] Reference Figure 4 As shown, the lamp panel 5 includes a lamp holder 51 fixedly arranged on the lifting seat 72. A lamp board 52 is detachably installed on the lamp holder 51. The lamp board 52 includes a fixing plate and a plurality of lamp strips 521 arranged in an array on the fixing plate. The lamp strips 521 are connected in series in sequence, and a plurality of LED lamp beads 522 are equally spaced and arrayed on the lamp strips 521. When adjusting the gear button 8, the brightness of the lamp panel 5 is changed by adjusting the brightness of the lamp beads 522 of each lamp strip 521 itself.

[0033] Reference Figure 2 and Figure 3 As shown, the lifting assembly 7 includes a base 71 provided at the bottom of the device body 101, a lifting seat 72 provided on the base 71, a scissors frame 73 provided between the base 71 and the lifting seat 72, and a driving mechanism 74 for driving the scissors frame 73 to lift and lower. The lamp panel 5 is provided on the lifting seat 72, and its light-emitting surface faces the light guide plate 102.

[0034] Among them, the driving mechanism 74 is electrically connected to the controller 6; the driving mechanism 74 includes a guide rod 741 and a hydraulic cylinder 742. The guide rod 741 is provided on the scissors frame 73. The hydraulic cylinder 742 is electrically connected to the controller 6, and a telescopic shaft 743 is provided at the output end of the hydraulic cylinder 742, and the other end of the telescopic shaft 743 is fixedly connected to the guide rod 741.

[0035] A set of first sliding rails 711 are respectively provided at both ends of one side of the base 71. A set of first pulleys 712 slidably connected to the first sliding rails 711 are respectively provided at both ends of one side of the bottom of the scissors frame 73, and both ends of the other side of the bottom of the scissors frame 73 are respectively hinged to the base 71; a set of second sliding rails 731 are respectively provided at both ends of one side of the lifting seat 72. A set of second pulleys 732 slidably connected to the second sliding rails 731 are respectively provided at both ends of one side of the top of the scissors frame 73, and both ends of the other side of the top of the scissors frame 73 are respectively hinged to the base 71; the first sliding rails 711 and the second sliding rails 731 are located on the same side.

[0036] When the hydraulic cylinder 742 drives the telescopic shaft 743 to expand and contract, the scissors frame 73 will perform a rotational movement around its hinge point. This rotational movement will simultaneously change the positions of the pulleys at the bottom and top of the scissors frame 73 on their respective sliding rails, thereby pushing the lifting seat 72 to rise or fall.

[0037] A control button 11 for controlling the lifting and lowering of the scissors frame 73 is further provided on the device body 101. The control button 11 is electrically connected to the controller 6. By pressing the control button 11, the lifting and lowering of the scissors frame 73 are controlled, so as to realize the lifting and lowering of the lamp panel 5 on the lifting seat 72.

[0038] On one side of the bottom of the light guide plate 102, there is a light intensity sensor 9 for detecting the light intensity of the light guide plate 102; on the device body 101, there is a display screen 10, and the display screen 10 and the light intensity sensor 9 are respectively electrically connected to the controller 6; the display screen 10 is used to display the detection data of the light intensity sensor 9. When the lamp panel 5 emits light, the light intensity sensor 9 obtains the light intensity data of the lamp panel 5 at this time and displays it on the display screen 10. Users can use the light intensity data as a dimming reference to adjust the position and brightness of the lamp panel 5.

[0039] A plurality of support columns 12 are provided at the bottom of the device body 101, and a guide wheel 13 is provided on each of the support columns 12, and a locking mechanism is provided on the guide wheel 13. Through the arrangement of the guide wheel 13 and the locking mechanism, it is convenient for the inspection table to move and stop, increasing the convenience of use.

[0040] A storage cabinet 14 is further provided on the device body 101, and the storage cabinet 14 is located on one side of the bottom of the device body 101.

[0041] The working principle of the present utility model is as follows: Place the optical composite film to be inspected on the placement platform 103, use the pneumatic clamp 4 to clamp the edge of the optical composite film, and fix the optical composite film flat on the placement platform 103; then turn on the power of the lamp panel 5, and the lamp panel 5 emits light and irradiates the light on the light guide placement platform 103. The user can adjust the brightness of the lamp panel 5 by adjusting the gear button 8 according to the light intensity data displayed on the display screen 10 in combination with the light intensity range required for inspecting the current optical composite film to be inspected. At the same time, press the control button 11 to drive the lamp panel 5 to lift, and then adjust the distance between the lamp panel 5 and the placement platform 103 to adjust the light intensity on the placement platform 103 to the light intensity range suitable for the current optical composite film to be inspected; after the adjustment is completed, perform defect inspection on the optical composite film.

[0042] Embodiment 2

[0043] Reference Figure 5 As shown in the figure, the difference between Embodiment 2 and Embodiment 1 is that the lamp board 52 includes a fixing plate and a plurality of lighting modules arranged in an array on the fixing plate. The lighting module includes a plurality of lamp strips 521 connected in series in sequence, and a plurality of LED lamp beads 522 are equally spaced and arranged on the lamp strip 521.

[0044] When adjusting the gear button 8, the brightness of the lamp panel 5 is changed by adjusting the number of lighting modules emitting light.

[0045] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model, and do not limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, other modifications and changes can be made. The embodiments selected and specifically described in this specification are for better explaining the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. It is not a limitation to the present utility model. Any solution obtained by simply modifying the present utility model belongs to the protection scope of the present utility model.

Claims

1. A defect inspection device for an optical composite film, characterized in that, It includes an inspection table, two ion blowers arranged side by side above the inspection table, and an air purifier arranged between the two ion blowers; The inspection table includes a device body, a light guide plate is arranged above the device body, and the light guide plate is recessed inward to form a placement platform; several pneumatic clamps for fixing the optical composite film are arranged on the edge of the placement platform; A lamp panel, a lifting assembly and a controller are arranged inside the device body; a gear button for controlling the brightness of the lamp panel is arranged on the device body, and the gear button is electrically connected to the lamp panel through the controller; The lifting assembly includes a base arranged at the bottom of the device body, a lifting seat arranged on the base, a scissors frame arranged between the base and the lifting seat, and a driving mechanism for driving the scissors frame to lift; the lamp panel is arranged on the lifting seat, and its light emitting surface faces the light guide plate; the driving mechanism is electrically connected to the controller; A set of first slide rails are respectively arranged at both ends of one side of the base, a set of first pulleys slidably connected to the first slide rails are respectively arranged at both ends of one side of the bottom of the scissors frame, and both ends of the other side of the bottom of the scissors frame are respectively hinged to the base; a set of second slide rails are respectively arranged at both ends of one side of the lifting seat, a set of second pulleys slidably connected to the second slide rails are respectively arranged at both ends of one side of the top of the scissors frame, and both ends of the other side of the top of the scissors frame are respectively hinged to the base; the first slide rails and the second slide rails are on the same side.

2. The defect inspection device for an optical composite film according to claim 1, characterized in that, The driving mechanism includes a guide rod and a hydraulic cylinder, the guide rod is arranged on the scissors frame, the hydraulic cylinder is electrically connected to the controller, and a telescopic shaft is arranged at the output end of the hydraulic cylinder, and the other end of the telescopic shaft is fixedly connected to the guide rod.

3. The defect inspection device for an optical composite film according to claim 1, characterized in that The lamp panel includes a lamp holder fixedly arranged on the lifting seat, and a lamp board is detachably installed on the lamp holder.

4. The defect inspection device for an optical composite film according to claim 3, characterized in that, The lamp board includes a fixing plate and several lamp strips arranged in an array on the fixing plate, the lamp strips are connected in series in sequence, and several LED lamp beads are evenly arranged at equal intervals on the lamp strips.

5. The defect inspection device for an optical composite film according to claim 3, characterized in that, The lamp board includes a fixing plate and several lighting modules arranged in an array on the fixing plate, the lighting module includes several lamp strips connected in series in sequence, and several LED lamp beads are evenly arranged at equal intervals on the lamp strips.

6. The defect inspection device for an optical composite film according to claim 1, characterized in that, A light intensity sensor for detecting the light intensity of the light guide plate is arranged on one side of the bottom of the light guide plate; a display screen is arranged on the device body, and the display screen and the light intensity sensor are respectively electrically connected to the controller; the display screen is used for displaying the detection data of the light intensity sensor.

7. The defect inspection device for an optical composite film according to claim 1, characterized in that, Several air inlets and several air outlets are arranged on each ion blower, the air inlets and the air outlets correspond to each other one by one, an air duct is formed between the air inlet and the corresponding air outlet of each ion blower, and the air outlets all face the inspection table.

8. The defect inspection device for an optical composite film according to claim 1, wherein, An air pump is also arranged on one side of the device body, the air pump is connected to the pneumatic clamp through an air pipe, and a vacuum valve is arranged on the air pipe.

9. The defect inspection device for an optical composite film according to claim 1, characterized in that, A control button for controlling the lifting of the scissors frame is also arranged on the device body, and the control button is electrically connected to the controller.

10. The defect inspection device for an optical composite film according to claim 1, characterized in that, A plurality of support columns are provided at the bottom of the device body, a guide wheel is provided on each of the support columns, and a locking mechanism is provided on the guide wheel.

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