Polarizer automatic feeding detection device

Abstract

The embodiment of the utility model provides an automatic polaroid feeding and detecting device, and relates to the technical field of polaroid detection. The automatic polaroid feeding detection device comprises a rack, an image acquisition assembly, a transmission assembly, a first transfer assembly and a second transfer assembly, the image acquisition assembly is connected with the rack, the transmission assembly, the first transfer assembly and the second transfer assembly are all installed on the rack, and the transmission assembly is used for carrying a polaroid to walk so that the polaroid can pass through the image acquisition assembly; the first transfer assembly is used for transferring the polaroid to the transmission assembly, and the second transfer assembly is used for unloading the polaroid from the transmission assembly. Through the first transfer assembly and the second transfer assembly, full-process automation of the polaroid from feeding, detection to discharging is achieved, the detection efficiency is improved, and polaroid damage or pollution possibly caused by manual operation is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of polarizer testing, specifically to an automatic polarizer feeding and testing device. Background Technology

[0002] Polarizing films, as key optical components in display devices, are widely used in LCD monitors, touch screens, and other optical equipment. Their appearance quality directly affects the display effect and lifespan of the products. Therefore, efficient and accurate inspection of the polarizing film's appearance is a crucial step in the production process. Appearance inspection mainly targets surface defects of the polarizing film, such as scratches, bubbles, stains, and foreign objects, as well as dimensional accuracy and optical performance conformity, to ensure that the product meets high-quality standards.

[0003] Currently, the appearance inspection of polarizers mostly employs machine vision technology. High-resolution cameras combined with image processing algorithms can quickly identify surface defects and determine quality. However, in actual production, the handling of polarizers still primarily relies on manual operation. Because polarizers are thin and fragile, manually handling them one by one is not only inefficient but also prone to causing scratches or deformations on the surface due to improper handling, further increasing the defect rate and making it difficult to meet the needs of large-scale automated production. Utility Model Content

[0004] According to an embodiment of this utility model, an automatic polarizer feeding and detection device is provided to solve the problems mentioned in the background art.

[0005] In a first aspect, an automatic polarizer feeding and detection device is provided.

[0006] The automatic polarizer loading and inspection device includes: a frame, an image acquisition component, a transmission component, a first transfer component, and a second transfer component; the image acquisition component is connected to the frame, and the transmission component, the first transfer component, and the second transfer component are all mounted on the frame. The transmission component is used to carry the polarizer through the image acquisition component; the first transfer component is used to transfer the polarizer onto the transmission component, and the second transfer component is used to unload the polarizer from the transmission component.

[0007] Preferably, the frame includes a platform, a support frame, and wheels, with the platform disposed on the support frame and the wheels disposed at the bottom of the support frame.

[0008] Preferably, the image acquisition component includes a bracket, a mounting plate, and a line scan camera; the bracket is fixedly connected to the frame, the mounting plate is connected to the bracket, and the line scan camera is mounted on the mounting plate.

[0009] Preferably, the transmission assembly includes a conveyor belt, a first motor, a first roller, a second roller, and a support plate; the first roller and the second roller are rotatably connected to the support plate, the output end of the first motor is connected to the first roller, and the conveyor belt passes around the first roller, the second roller, and the support plate.

[0010] Preferably, the first transfer assembly includes two mounting seats, two guide shafts, a lead screw, a second motor, a movable seat, a cylinder, a mounting plate, and a suction cup; the two mounting seats are fixedly mounted on the upper surface of the frame, the two guide shafts are fixedly mounted between the two mounting seats, the movable seat is slidably mounted between the two guide shafts, the lead screw passes through the movable seat and is threadedly connected to the movable seat, the cylinder is mounted on the lower surface of the movable seat, the output end of the cylinder is connected to the mounting plate, and the suction cup is mounted on the lower surface of the mounting plate.

[0011] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0012] This utility model provides an automatic polarizer feeding and testing device, which automates the entire process of polarizer feeding, testing and unloading through a first transfer component and a second transfer component. This not only improves testing efficiency, but also effectively avoids damage or contamination of polarizers that may be caused by manual operation. It is suitable for large-scale, high-precision polarizer production needs.

[0013] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0014] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0015] Figure 1 A three-dimensional structural schematic diagram of an automatic polarizer feeding and detection device according to an embodiment of the present invention is shown;

[0016] Figure 2 A three-dimensional structural schematic diagram of the movable base of the automatic polarizer feeding and detection device according to an embodiment of the present invention is shown;

[0017] Figure 3 A three-dimensional structural schematic diagram of the transmission component of the automatic polarizer feeding and detection device according to an embodiment of the present invention is shown;

[0018] Figure 4 A three-dimensional structural schematic diagram of the image acquisition component of the automatic polarizer feeding and detection device according to an embodiment of the present invention is shown.

[0019] Explanation of reference numerals in the attached figures

[0020] 1-Frame, 11-Tablet, 12-Support frame, 13-Walking wheel, 14-Control panel, 2-Image acquisition component, 21-Bracket, 22-Mounting plate, 23-Line scan camera, 3-Transmission component, 31-Conveyor belt, 32-First motor, 33-First roller, 34-Second roller, 35-Support plate, 4-First transfer component, 41-Mounting base, 42-Guide shaft, 43-Lead screw, 44-Second motor, 45-Moving base, 46-Cylinder, 47-Mounting plate, 48-Suction cup, 5-Second transfer component. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0023] like Figures 1 to 4 As shown, this utility model provides an automatic polarizer loading and inspection device, including a frame 1, an image acquisition component 2, a transmission component 3, a first transfer component 4, and a second transfer component 5. The frame 1 serves as the supporting structure for the entire device, used to support and fix other components. The image acquisition component 2 is fixedly connected to the frame 1 and is used to acquire appearance images of the polarizer. The transmission component 3, the first transfer component 4, and the second transfer component 5 are all mounted on the frame 1. The transmission component 3 carries the polarizer and drives it to move along a predetermined path so that the polarizer passes through the detection area of ​​the image acquisition component 2; the first transfer component 4 transfers the polarizer to be inspected from the loading position to the transmission component 3; and the second transfer component 5 removes the inspected polarizer from the transmission component 3 and transfers it to the unloading position.

[0024] Specifically, the upper surface of the frame 1 is provided with a loading area for placing the polarizer to be tested. This loading area can be a platform for manually placing the polarizer or an interface for connecting to an external feeding device. During the testing process, the first transfer component 4 picks up the polarizer from the loading area using its gripping mechanism (e.g., a suction cup or clamping mechanism) and precisely places it on the bearing surface of the transfer component 3. The transfer component 3 preferably includes a conveyor belt or guide rail mechanism, capable of moving the polarizer along the testing path at a stable speed. When the polarizer moves to below the image acquisition component 2, the image acquisition component 2 is activated, capturing a surface image of the polarizer using a high-resolution camera and related optical elements, and transmitting the acquired image data to an image processing system to detect surface defects in the polarizer, such as scratches, bubbles, stains, or foreign objects.

[0025] After image acquisition is completed, the transmission component 3 continues to move the polarizer forward to the unloading area. At this time, the second transfer component 5 picks up the polarizer from the transmission component 3 using its gripping mechanism and transfers it to a designated unloading position, such as a collection box or a conveyor device for subsequent processes. The actions of the first transfer component 4 and the second transfer component 5 can be precisely coordinated by the control system to ensure seamless connection between the loading, inspection, and unloading processes.

[0026] The image processing system uses existing machine vision processing systems, such as vision inspection software based on industrial computers (PCs) or embedded processing platforms. Common systems include, but are not limited to, commercial or open-source machine vision development platforms such as Cognex VisionPro, Halcon, and OpenCV.

[0027] Specifically, the workflow of the image processing system is as follows: First, the line scan camera 23 captures the surface image of the polarizer in a line-by-line scanning manner as the polarizer passes through its detection area, and transmits the acquired image data to the image processing system in real time via a data interface (e.g., GigE, USB, or Camera Link). After receiving the image data, the image processing system performs the following steps for defect detection:

[0028] Denoising, grayscale conversion, and contrast enhancement are performed on the original image to improve image quality and highlight defect features. For example, Gaussian filtering is used to remove noise, or histogram equalization is used to enhance image contrast.

[0029] Using edge detection algorithms (such as Canny edge detection) or template matching techniques, the contours and key areas of the polarizer surface are identified to locate potential defects. For common defect types of polarizers (such as scratches, bubbles, stains, and foreign objects), the system extracts relevant geometric features (such as length, area, and shape) or optical features (such as brightness and texture).

[0030] By analyzing extracted features using pre-trained machine vision algorithms or rule bases, the system determines the presence of defects and classifies their types. For example, scratches typically appear as thin, high-contrast lines, bubbles as round or elliptical bright areas, and blemishes as irregular dark areas. The system can employ threshold judgment, pattern recognition, or machine learning models (such as convolutional neural networks, CNNs) to accurately classify defects.

[0031] Based on the test results, the image processing system generates a quality assessment report for the polarizer, such as marking the location, type, and severity of defects, and displays the test results on the control panel 14 (refer to the foregoing description), or transmits the results to an external device for subsequent processing (such as rejecting defective products). If the polarizer is determined to be defective, the system can trigger a signal to notify the second transfer component 5 to transfer the polarizer to the waste collection area.

[0032] To ensure detection accuracy, the image processing system is matched to the operating speed of the transmission component 3. The image acquisition frequency of the line scan camera 23 is adaptively adjusted according to the moving speed of the conveyor belt 31 (controlled by the first motor 32, as described above) to ensure seamless image stitching and complete coverage. Simultaneously, the image processing system can be configured with different detection parameters (such as defect size threshold or sensitivity) via a software interface to adapt to the detection requirements of polarizers of different specifications.

[0033] By applying the aforementioned image processing system, the automatic polarizer loading and inspection device of this embodiment can achieve efficient and accurate identification of surface defects in polarizers. The image processing system utilizes existing mature machine vision technology, combined with the high-resolution image acquisition of the line scan camera 23, significantly improving the automation level and quality stability of the inspection, avoiding subjective errors from manual visual inspection, and is suitable for large-scale, high-precision polarizer production scenarios.

[0034] Through the above structure and operation method, the automatic polarizer feeding and testing device of this utility model realizes the full automation of polarizer feeding, testing and unloading. It not only improves the testing efficiency, but also effectively avoids damage or contamination of polarizers that may be caused by manual operation. It is suitable for the needs of large-scale, high-precision polarizer production.

[0035] In this embodiment, the frame 1 includes a platform 11, a support frame 12, and wheels 13. The platform 11 is fixedly mounted above the support frame 12, serving as a platform for supporting other components. The support frame 12 provides a stable support structure for the frame 1, and the wheels 13 are located at the bottom of the support frame 12 to facilitate the movement and positioning of the device. Furthermore, the frame 1 is also equipped with a control panel 14, which receives operating commands and displays the operating status of the device, thereby facilitating user monitoring and control of the testing process.

[0036] In this embodiment, the image acquisition component 2 includes a bracket 21, a mounting plate 22, and a line scan camera 23. The bracket 21 is fixedly connected to the platform 11 of the frame 1 to support the image acquisition component 2. The mounting plate 22 is adjustablely connected to the bracket 21 to accommodate different detection heights or angles. The line scan camera 23 is mounted on the mounting plate 22 to capture surface images of the polarizer. Preferably, the line scan camera 23 is equipped with a light source (not shown) to provide uniform illumination conditions, ensuring the clarity and accuracy of image acquisition.

[0037] In this embodiment, the transmission assembly 3 includes a conveyor belt 31, a first motor 32, a first roller 33, a second roller 34, and a support plate 35. The first roller 33 and the second roller 34 are rotatably connected to the support plate 35 via bearings. The support plate 35 is fixed to the platform 11 of the frame 1 and supports the running path of the conveyor belt 31. The output end of the first motor 32 is connected to the first roller 33 via a coupling or gear mechanism to provide driving force. The conveyor belt 31 is wound around the first roller 33, the second roller 34, and the support plate 35, forming a closed transmission circuit. The support plate 35 provides additional rigid support below the conveyor belt 31 to ensure the stability of the conveyor belt 31 during operation.

[0038] During operation, the first motor 32 is started, driving the first roller 33 to rotate. The first roller 33 then drives the conveyor belt 31 to travel along a predetermined direction. The movement of the conveyor belt 31 drives the second roller 34 to rotate synchronously, thereby achieving smooth operation of the conveyor belt 31. The polarizer to be inspected is placed on the bearing surface of the conveyor belt 31 and moves forward with the conveyor belt 31. When the polarizer moves directly below the line scan camera 23, the line scan camera 23 triggers image acquisition, captures the surface image of the polarizer, and transmits the image data to an external image processing system (not shown in the figure) for defect detection, such as identifying appearance defects like scratches, bubbles, stains, or foreign objects. The running speed of the conveyor belt 31 can be adjusted by the rotation speed of the first motor 32 to match the acquisition frequency of the line scan camera 23, thereby ensuring the accuracy and efficiency of the inspection.

[0039] After the polarizer completes image acquisition, the conveyor belt 31 continues to move the polarizer forward to the unloading area. Subsequently, the second transfer assembly 5 (reference) Figures 1 to 4 The polarizing film is picked up from the conveyor belt 31 and transferred to a designated unloading location, such as a collection box or a conveying device for subsequent processes. Simultaneously, the first transfer assembly 4 (refer to...) Figures 1 to 4 The system continues to pick up new polarizers to be tested from the loading area and place them on the conveyor belt 31, thereby realizing a continuous automated testing process.

[0040] In this embodiment, the first transfer assembly 4 includes two mounting seats 41, two guide shafts 42, a lead screw 43, a second motor 44, a movable seat 45, a cylinder 46, a mounting plate 47, and a suction cup 48. The two mounting seats 41 are fixedly mounted on the upper surface of the platform 11 of the frame 1, forming the supporting base of the first transfer assembly 4. The two guide shafts 42 are arranged in parallel and fixedly connected between the two mounting seats 41, guiding the sliding movement of the movable seat 45. The movable seat 45 is slidably mounted on the two guide shafts 42 via a sliding bearing or a slider (not shown in the figure) to ensure smooth and accurate movement. The lead screw 43 is arranged parallel to the guide shafts 42, passes through the movable seat 45, and is threadedly connected to the nut structure inside the movable seat 45. The second motor 44 is fixedly mounted on one of the mounting seats 41, and its output end is connected to the lead screw 43 via a coupling or gear mechanism to drive the lead screw 43 to rotate. The cylinder 46 is fixedly mounted on the lower surface of the movable base 45, and its output end is connected to the mounting plate 47 via a piston rod, for driving the mounting plate 47 to move vertically. The suction cup 48 is fixedly mounted on the lower surface of the mounting plate 47, for adsorbing the polarizer by negative pressure.

[0041] In use, the loading operation of the first transfer component 4 is as follows: First, the polarizer to be tested is placed in the loading area of ​​the frame 1 (e.g., a manual placement platform or an interface of an external feeding device). The control system starts the second motor 44 to rotate, and the output end of the second motor 44 drives the lead screw 43 to rotate. The lead screw 43 drives the moving seat 45 to slide along the guide shaft 42 through threaded transmission until the moving seat 45 moves directly above the loading area. Then, the cylinder 46 is controlled to move, causing its output end to drive the mounting plate 47 and the suction cup 48 downward until the adsorption surface of the suction cup 48 contacts the surface of the polarizer to be tested. Next, a vacuum pump or a negative pressure generating device (not shown in the figure) is used to control the formation of a negative pressure inside the suction cup 48, thereby firmly adsorbing the polarizer. After adsorption is completed, the output end of the cylinder 46 is controlled to retract, causing the mounting plate 47 and the adsorbed polarizer to rise to the initial height. Subsequently, the second motor 44 drives the lead screw 43 to rotate again, causing the movable seat 45 to move along the guide shaft 42 to above the bearing surface of the transmission assembly 3. The output end of the cylinder 46 is controlled to move down again, bringing the polarizer close to the surface of the conveyor belt 31 of the transmission assembly 3. Then, the suction cup 48 is controlled to release the negative pressure, releasing the polarizer so that it falls smoothly onto the conveyor belt 31, where it is carried and transported to the detection area by the transmission assembly 3.

[0042] In this embodiment, the structure and working principle of the second transfer component 5 are the same as those of the first transfer component 4. The second transfer component 5 is used to remove the inspected polarizer from the transmission component 3. Its unloading operation is as follows: After the polarizer undergoes appearance inspection by the image acquisition component 2, the conveyor belt 31 of the transmission component 3 transports the polarizer to the unloading area. The motor of the second transfer component 5 drives its lead screw to rotate, causing the moving seat to move along the guide shaft to directly above the polarizer on the conveyor belt 31. Then, its cylinder is controlled to move downwards to contact the surface of the polarizer, and the polarizer is adsorbed by negative pressure. After adsorption, the cylinder retracts, and the suction cup, along with the polarizer, rises. Subsequently, the motor again drives the moving seat to the designated unloading position (e.g., a collection box or a conveyor device for subsequent processes). Finally, the suction cup is controlled to release the negative pressure, releasing the polarizer and allowing it to fall to the unloading position, completing the unloading operation.

[0043] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic polarizer feeding and testing device, characterized in that, The utility model relates to a kind of polaroid image acquisition device, including: Rack (1), image acquisition component (2), transmission component (3), first transfer component (4) and second transfer component (5);The image acquisition component (2) is connected with the rack (1), the transmission component (3), the first transfer component (4) and second transfer component (5) are all installed on the rack (1), the transmission component (3) is used to carry polaroid and walk, makes polaroid pass through image acquisition component (2);The first transfer component (4) is used to transfer the polaroid to the transmission component (3), and the second transfer component (5) is used to unload the polaroid from the transmission component (3).

2. The automatic polaroid loading and detecting device according to claim 1, wherein, The rack (1) includes a table plate (11), a support frame body (12) and a walking wheel (13), the table plate (11) is provided on the support frame body (12), and the walking wheel (13) is provided at the bottom of the support frame body (12).

3. The automatic polaroid loading and detecting device according to claim 2, characterized in that, The image acquisition component (2) includes a bracket (21), a mounting plate (22) and a line array camera (23);The bracket (21) is fixedly connected with the rack (1), the mounting plate (22) is connected with the bracket (21), and the line array camera (23) is installed on the mounting plate (22).

4. The automatic polaroid loading and detecting device according to claim 1, wherein, The transmission component (3) includes a conveyor belt (31), a first motor (32), a first roller shaft (33), a second roller shaft (34) and a support plate (35);The first roller shaft (33) and the second roller shaft (34) are rotatably connected with the support plate (35) respectively, the output end of the first motor (32) is connected with the first roller shaft (33), and the conveyor belt (31) passes around the first roller shaft (33), the second roller shaft (34) and the support plate (35).

5. The automatic polaroid loading and detecting device according to claim 1, wherein, The first transfer component (4) includes two mounting seats (41), two guide shafts (42), a lead screw (43), a second motor (44), a moving seat (45), a cylinder (46), a mounting disc (47) and a suction disc (48); Two mounting seats (41) are fixedly installed on the upper surface of the rack (1), two guide shafts (42) are fixedly installed between two mounting seats (41), the moving seat (45) is slidably installed between two guide shafts (42), the lead screw (43) passes through the moving seat (45) and is threadedly connected with the moving seat (45), the cylinder (46) is installed on the lower surface of the moving seat (45), the output end of the cylinder (46) is connected with the mounting disc (47), and the suction disc (48) is installed on the lower surface of the mounting disc (47).

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