An optical film visual inspection device

Abstract

The utility model discloses an optical film piece visual inspection device, including frame, traction conveying mechanism, detection station, light source subassembly, CCD detection subassembly, tensioning cylinder subassembly, marking assembly and roll film cylinder, traction conveying mechanism is used for conveying optical film piece along the extension direction of frame, light source subassembly is used for providing illumination, CCD detection subassembly is used for carrying out image photographing detection to optical film piece on detection station, marking assembly is used for marking the area of image photographing detection unqualified on optical film piece, roll film cylinder is used for winding optical film piece. The utility model's traction conveying mechanism can convey optical film piece to detection station, and CCD detection subassembly can automatically identify the surface defect on optical film piece, and marking assembly can mark unqualified area, and the quality traceability is convenient, and roll film cylinder can wind the optical film piece after detection, and the whole process is automatic, and the detection precision and efficiency of optical film piece have been effectively promoted.

Description

Technical Field

[0001] This utility model relates to the field of film inspection devices, and more particularly to an optical film visual inspection device. Background Technology

[0002] Optical films are thin films used in liquid crystal displays, touch panels, optical instruments, and other high-precision optical devices. They are usually made of highly transparent materials and have excellent optical properties, such as transmittance and reflectivity. Since the optical properties of optical films affect the display effect of products, surface defect detection of optical films is required during the production process to ensure the quality of products.

[0003] In the existing technology, traditional optical film inspection methods usually adopt manual visual inspection. This method is not only inefficient and labor-intensive, but also prone to missed or false detections, thus affecting the inspection accuracy and production efficiency of optical films.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an optical film visual inspection device that can automatically detect, has high detection accuracy, and effectively improves detection efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution: an optical film visual inspection device, comprising a base, a traction conveying mechanism, an inspection table, a light source assembly, a CCD inspection assembly, a tensioning roller assembly, a marking assembly, and a film winding roller;

[0007] The testing platform and the traction conveying mechanism are both mounted on the machine base. The traction conveying mechanism is used to convey the optical film along the extension direction of the machine base, and the testing platform is used to support the optical film.

[0008] The two sets of light source components are respectively disposed on both sides of the detection stage. The light source components are used to provide illumination. The CCD detection component is disposed above the detection stage. The CCD detection component is used to perform image capture and detection on the optical film on the detection stage.

[0009] The marking component is located at the side end of the traction conveying mechanism, and the marking component is used to mark areas on the optical film that fail the image capture detection.

[0010] One set of the tensioning roller assemblies is located at the side end of the testing table, and another set of tensioning roller assemblies is located between the traction conveying mechanism and the marking assembly;

[0011] The film winding roller is located on the side of the machine base and is used to wind up optical films.

[0012] The optical film visual inspection device using the above technical solution also includes a protective cover, which is used to cover the base.

[0013] The optical film visual inspection device using the above technical solution also includes a display module;

[0014] The display module is located outside the protective cover and is electrically connected to the CCD detection component. The display module is used to display the image detection results of the optical film.

[0015] Using the above technical solution, in the optical film visual inspection device, the traction conveying mechanism includes a mounting plate, a drive roller, a lower pressure roller, a drive motor, and a pressing assembly;

[0016] The mounting plates are disposed on both sides of the base, the drive roller is rotatably disposed between the two mounting plates, the drive motor is disposed on the side end of the mounting plate and is connected to the drive roller through a pulley transmission assembly, and the drive motor is used to drive the drive roller to rotate;

[0017] The mounting plate has a sliding groove on its upper part, and the clamping assembly is located in the sliding groove. The clamping assembly is connected to the lower pressure roller, and the clamping assembly is used to adjust the gap between the lower pressure roller and the drive roller.

[0018] Using the above technical solution, in the optical film visual inspection device, the clamping assembly includes a pressing cylinder, a spring clamping element, and a pressure plate;

[0019] The downward pressing cylinder is disposed on the slide groove, with the movable end of the downward pressing cylinder facing downward and connected to the pressure plate through the spring pressing member. The downward pressing cylinder is used to drive the pressure plate to slide up and down along the extension direction of the slide groove.

[0020] The pressure plate is provided with a bearing seat, and the bearing seat is sleeved and connected to the shaft end of the lower pressure roller.

[0021] Using the above technical solution, in the optical film visual inspection device, the light source assembly includes a light source bracket and an LED light source;

[0022] The light source bracket is located on the side of the testing platform, and the LED light source is tilted on the light source bracket. The angle between the light emission direction of the LED light source and the horizontal plane is 30-45°.

[0023] In the optical film visual inspection device described above, the marking component is an inkjet printer or a laser marking device.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The traction conveying mechanism of this invention can transport the optical film to the inspection table. The CCD inspection component can automatically identify surface defects on the optical film. When a non-conforming area is detected, the marking component can mark the defect location for subsequent processing. The light source component can provide illumination to the CCD inspection component, thereby improving the image acquisition clarity of the CCD inspection component. The film winding roller can rewind and store the inspected optical film. The entire inspection process is automated, effectively improving the inspection accuracy and efficiency of the optical film. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the installation structure of the protective cover of this utility model;

[0030] Figure 3 This is a partial structural schematic diagram of the present invention;

[0031] Figure 4 This is a schematic diagram of the CCD detection component installation structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the installation structure of the traction conveying mechanism of this utility model.

[0033] Figure 6 This is a schematic diagram of the light source component structure of this utility model;

[0034] Figure 7 This is a schematic diagram of the traction and conveying mechanism of this utility model. Detailed Implementation

[0035] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0036] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] like Figures 1 to 7As shown, this utility model embodiment provides an optical film visual inspection device, including a base 1, a traction conveying mechanism 2, an inspection table 3, a light source assembly 4, a CCD inspection assembly 5, a tension roller assembly 6, a marking assembly 7, and a film winding roller 8. The inspection table 3 and the traction conveying mechanism 2 are both mounted on the base 1. The traction conveying mechanism 2 is used to convey the optical film along the extending direction of the base 1. The inspection table 3 is used to support the optical film. Two sets of light source assemblies 4 are respectively disposed on both sides of the inspection table 3. The light source assemblies 4 are used to provide illumination. The CCD detection component 5 is located above the detection platform 3. The CCD detection component 5 is used to perform image photography detection on the optical film on the detection platform 3. The marking component 7 is located at the side end of the traction conveying mechanism 2. The marking component 7 is used to mark areas on the optical film that fail the image photography detection. One set of tension roller assemblies 6 is located at the side end of the detection platform 3, and another set of tension roller assemblies 6 is located between the traction conveying mechanism 2 and the marking component 7. The film winding roller 8 is located at the side end of the machine base 1. The film winding roller 8 is used to wind up the optical film. The traction conveyor 2 transports the optical film to the inspection table 3, while the light source assembly 4 provides uniform illumination to avoid image acquisition distortion caused by uneven lighting. The CCD inspection assembly 5 takes pictures of the surface defects of the optical film to accurately identify defects such as bubbles, scratches, and stains. The tension roller assembly 6 adjusts the tension of the optical film to keep it flat during transport. When the CCD inspection assembly 5 detects a defective area on the surface of the optical film, the marking assembly 7 marks the detected defective area to facilitate subsequent rejection, repair, or other processing. Finally, the inspected and marked optical film is wound up by the film winding roller 8 for storage.

[0039] like Figure 2 As shown, it further includes a protective cover 10, which is used to cover the base 1. The protective cover 10 can prevent external contaminants from entering the equipment and thus affecting the clarity of image acquisition.

[0040] like Figure 1 and Figure 2 As shown, it further includes a display module 11, which is located outside the protective cover 10. The display module 11 is electrically connected to the CCD detection component 5 and is used to display the image detection results of the optical film.

[0041] like Figure 4 and Figure 7As shown, the traction conveying mechanism 2 further includes a mounting plate 21, a drive roller 22, a pressing roller 23, a drive motor 24, and a pressing assembly 25. The mounting plate 21 is disposed on both sides of the base 1. The drive roller 22 is rotatably disposed between the two mounting plates 21. The drive motor 24 is disposed on the side of the mounting plate 21 and is connected to the drive roller 22 through a pulley transmission assembly 26. The drive motor 24 is used to drive the drive roller 22 to rotate. The upper part of the mounting plate 21 is provided with a sliding groove 210. The clamping component 25 is located within the slide groove 210. The clamping component 25 is connected to the lower pressure roller 23. The clamping component 25 is used to adjust the gap between the lower pressure roller 23 and the drive roller 22. The optical film is clamped in the gap between the lower pressure roller 23 and the drive roller 22. When the drive motor 24 is started, it can drive the drive roller 22 to rotate, thereby moving the optical film along the conveying path. By adjusting the clamping component 25, the contact pressure between the optical film and the roller can be controlled to adapt to clamping optical films of different thicknesses.

[0042] like Figure 7 As shown, the pressing assembly 25 further includes a pressing cylinder 251, a spring pressing member 252, and a pressure plate 253. The pressing cylinder 251 is disposed on the slide groove 210, with its movable end facing downwards, and is connected to the pressure plate 253 through the spring pressing member 252. The pressing cylinder 251 is used to drive the pressure plate 253 to slide up and down along the extension direction of the slide groove 210. The pressure plate 253 is provided with a bearing seat, which is sleeved and connected to the shaft end of the pressing roller 23. The spring pressing member 252 can provide a reverse elastic force to the pressing roller 23 to avoid excessive pressure from damaging the optical film.

[0043] like Figure 3 and Figure 6 As shown, the light source assembly 4 further includes a light source bracket 41 and an LED light source 42. The light source bracket 41 is disposed on the side of the detection stage 3, and the LED light source 42 is inclinedly disposed on the light source bracket 41. The angle between the light emission direction of the LED light source 42 and the horizontal plane is 30-45°. In this embodiment, the angle between the light emission direction of the LED light source 42 and the horizontal plane is 45°. This setting can reduce the reflection caused by direct light and effectively increase the radiation area of ​​the light.

[0044] Furthermore, the marking component 7 is an inkjet printer or a laser marking device. In this embodiment, the marking component 7 is an inkjet printer. The inkjet printer can form a mark on the surface of the optical film by spraying ink, so that the operator can quickly identify the optical film with problems, so as to facilitate subsequent processing, rejection or quality traceability.

[0045] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An optical film visual inspection apparatus, characterized by comprising: Includes a base, traction conveying mechanism, testing table, light source assembly, CCD testing assembly, tension roller assembly, marking assembly, and film roll assembly; The testing platform and the traction conveying mechanism are both mounted on the machine base. The traction conveying mechanism is used to convey the optical film along the extension direction of the machine base, and the testing platform is used to support the optical film. The two sets of light source components are respectively disposed on both sides of the detection stage. The light source components are used to provide illumination. The CCD detection component is disposed above the detection stage. The CCD detection component is used to perform image capture and detection on the optical film on the detection stage. The marking component is located at the side end of the traction conveying mechanism, and the marking component is used to mark areas on the optical film that fail the image capture detection. One set of the tensioning roller assemblies is located at the side end of the testing table, and another set of tensioning roller assemblies is located between the traction conveying mechanism and the marking assembly; The film winding roller is located on the side of the machine base and is used to wind up optical films.

2. The optical film sheet vision inspection apparatus according to claim 1, wherein It also includes a protective cover for covering the base.

3. The optical film sheet vision inspection apparatus according to claim 2, wherein It also includes a display module; The display module is located outside the protective cover and is electrically connected to the CCD detection component. The display module is used to display the image detection results of the optical film.

4. The optical film visual inspection device according to claim 1, characterized in that, The traction conveying mechanism includes a mounting plate, a drive roller, a lower pressure roller, a drive motor, and a clamping assembly; The mounting plates are disposed on both sides of the base, the drive roller is rotatably disposed between the two mounting plates, the drive motor is disposed on the side of the mounting plate and is connected to the drive roller through a pulley transmission assembly, and the drive motor is used to drive the drive roller to rotate; The mounting plate has a sliding groove on its upper part, and the clamping assembly is located in the sliding groove. The clamping assembly is connected to the lower pressure roller, and the clamping assembly is used to adjust the gap between the lower pressure roller and the drive roller.

5. The optical film visual inspection device according to claim 4, characterized in that, The clamping assembly includes a pressing cylinder, a spring clamping element, and a pressure plate; The downward pressing cylinder is disposed on the slide groove, with the movable end of the downward pressing cylinder facing downward and connected to the pressure plate through the spring member. The downward pressing cylinder is used to drive the pressure plate to slide up and down along the extension direction of the slide groove. The pressure plate is provided with a bearing seat, and the bearing seat is sleeved and connected to the shaft end of the lower pressure roller.

6. The optical film visual inspection device according to claim 1, characterized in that, The light source assembly includes a light source bracket and an LED light source; The light source bracket is located on the side of the testing platform, and the LED light source is tilted on the light source bracket. The angle between the light emission direction of the LED light source and the horizontal plane is 30-45°.

7. The optical film visual inspection device according to claim 1, characterized in that, The marking component is an inkjet printer or a laser marking device.

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