A kind of laminated film flaw detection device

Abstract

This utility model discloses a defect detection device for laminated film, relating to the field of laminated film detection technology. The device includes a detection frame with a backlight embedded in it. Both sides of the backlight are equipped with laminated film limiting tensioners connected to the detection frame. A CCD industrial camera is arranged in a rectangular array above the backlight. Each laminated film limiting tensioner includes two symmetrically arranged fixing brackets fixedly connected to the detection frame. This utility model, through the cooperation of the backlight and the CCD industrial camera, detects defects in the appearance of the laminated film. Bottom guide rollers and pressing and flattening rollers are provided on both sides of the backlight. The cooperation of these rollers ensures that the distance between the laminated film and the backlight remains consistent during movement, thereby improving detection accuracy and allowing for early detection of defects, increasing the yield rate of laminated film and reducing the risk of customer complaints later.

Description

Technical Field

[0001] This utility model specifically relates to the field of laminated film detection technology, and more specifically to a laminated film defect detection device. Background Technology

[0002] Laminated film is a polymer film used in the production of laminated glass. Through special heating and pressurization processes, it firmly bonds two or more layers of glass together. It can enhance the safety, impact resistance, sound insulation, and heat insulation properties of glass, and is widely used in the construction and automotive industries. During the production process, due to various reasons such as dirt from raw materials, equipment, and environment, as well as the appearance of dead material, crystal points, and holes, defects such as foreign objects, crystal points, dead material, holes, and watermarks are easily generated. These defects affect the appearance of the laminated film. Therefore, it is necessary to perform defect detection on the laminated film after production. Currently, the appearance inspection of laminated films requires the use of a backlight source and a CCD camera. The parallel / uniform light beam generated by the backlight source penetrates the laminated film. If there are abnormal areas in the film (such as bubbles, impurities, uneven thickness), it will cause local light intensity attenuation or scattering. The image captured by the CCD camera will form a difference in brightness and darkness. Then, the algorithm analyzes these differences to achieve quantitative evaluation of appearance and defect location.

[0003] However, in practice, it has been noted that during the inspection process, the laminated film needs to be moved on the backlight source. The change in the distance between the light source and the laminated film during the movement is not a simple "increase or decrease in light intensity". Instead, it will disrupt the uniformity of light intensity, reduce the contrast of defects, and disrupt the consistency of inspection, which will fundamentally affect the accuracy of appearance inspection and thus affect the inspection accuracy of the laminated film. Utility Model Content

[0004] The purpose of this invention is to provide a defect detection device for laminated film. Through the cooperation of a backlight source and a CCD industrial camera, it detects defects in the appearance of the laminated film. Bottom guide rollers and pressing and flattening rollers are provided on both sides of the backlight source. The cooperation of these rollers ensures that the distance between the laminated film and the backlight source remains consistent during movement, thereby improving detection accuracy and allowing for early detection of defects. This increases the yield rate of laminated film and reduces the risk of customer complaints later on. This addresses the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A defect detection device for laminated film includes a detection frame, a backlight source embedded in the detection frame, and laminated film limiting tensioners connected to the detection frame on both sides of the backlight source. A CCD industrial camera is also arranged in a rectangular array above the backlight source.

[0006] As a further technical solution of this utility model, the adhesive film limiting tensioner includes two symmetrically arranged fixed brackets that are fixedly connected to the testing frame. The two fixed brackets are movably connected to bottom guide rollers. A pressing and flattening roller is provided above the bottom guide rollers, and both ends of the pressing and flattening rollers are movably connected to elastic end buckles that engage with the fixed brackets.

[0007] As a further technical solution of this utility model, the fixed bracket includes a shaft hole fixing seat, and both sides of the shaft hole fixing seat are integrally provided with fixing hole plates. Each fixing hole plate is provided with a mounting bolt, and the mounting bolt passes through the fixing hole plate and is fixedly connected to the testing frame.

[0008] As a further technical solution of this utility model, the upper part of the shaft hole fixing seat is provided with symmetrical elastic locking claws, and the end of the elastic locking claw away from the shaft hole fixing seat is provided with a positioning protrusion corresponding to the elastic end buckle.

[0009] As a further technical solution of this utility model, the elastic end buckle includes a movable slider, and a positioning slot corresponding to the elastic locking claw is symmetrically opened above the movable slider, and the positioning protrusion at the end of the elastic locking claw engages with the positioning slot.

[0010] As a further technical solution of this utility model, the two elastic locking claws are respectively disposed at both ends of the movable slider, and the elastic locking claws are slidably connected to the movable slider. Furthermore, a triangular shaft seat is slidably connected below the movable slider, and the triangular shaft seat is movably connected to both ends of the pressing and flattening roller.

[0011] As a further technical solution of this utility model, the inner ends of the movable slider are provided with concave grooves, and both ends of the triangular shaft seat are integrally provided with limiting protrusions corresponding to the concave grooves, and the limiting protrusions and the concave grooves slide together.

[0012] As a further technical solution of this utility model, a compression spring is also provided between the movable slider and the triangular shaft seat, and the compression spring is located inside the movable slider.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention allows the laminated film to pass between the bottom guide roller and the pressing and flattening roller. The bottom guide roller and the pressing and flattening roller are located on both sides of the backlight source, which can flatten and tension the laminated film passing over the backlight source, thereby ensuring the flatness of the laminated film during inspection, preventing wrinkles from appearing during the inspection process, improving the inspection accuracy of laminated film defects, and thus improving the inspection accuracy of the equipment. In this invention, pressing down on the movable slider separates the positioning groove on the movable slider from the end of the elastic locking claw. Then, the end of the elastic locking claw separates to both sides. At this time, the spring between the movable slider and the triangular shaft seat pushes the movable slider upward, so that the movable slider passes the top of the elastic locking claw. Then, the movable slider moves upward, and the movable slider drives the triangular shaft seat to separate from the inside of the elastic locking claw, thereby facilitating the disassembly of the pressing and flattening roller, and making it easier for the staff to place the adhesive film between the bottom guide roller and the pressing and flattening roller. In normal use, the compression spring applies a downward thrust to the triangular shaft seat, thereby pushing the pressing and flattening roller connected to the triangular shaft seat downward. This causes the pressing and flattening roller to fit against the bottom guide roller, ensuring the tension and flattening of the laminated film. Furthermore, it ensures that the distance between the laminated film and the backlight source remains consistent, preventing the distance from affecting the appearance during inspection and improving inspection accuracy. When the laminated film passes over the backlight source, the light emitted by the backlight source can completely pass through the laminated film. When there are air bubbles or other defects in the laminated film, the light will change, affecting the appearance of the laminated film. Finally, the appearance of the laminated film is inspected by a CCD industrial camera located above the laminated film. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0015] Figure 2 This utility model Figure 1 Another perspective view.

[0016] Figure 3 This utility model Figure 2 A magnified view of a portion of the image.

[0017] Figure 4 This is a three-dimensional structural diagram of the adhesive film limiting tensioner in this utility model.

[0018] Figure 5 This utility model Figure 4 A magnified view of a portion of the image.

[0019] Figure 6 This is a three-dimensional structural diagram of the fixed card holder in this utility model.

[0020] Figure 7 This utility model Figure 6 A magnified view of a portion of the image.

[0021] Figure 8 This is a schematic diagram of the disassembled structure of the elastic end buckle in this utility model.

[0022] Figure 9 This utility model Figure 8 A schematic diagram of the bottom structure.

[0023] In the picture: 1-Inspection frame, 2-Drive roller, 3-Clamping roller, 4-Drive motor, 5-Backlight source, 6-Fit film limit tensioner, 61-Bottom guide roller, 62-Pressure flattening roller, 63-Fixed bracket, 631-Shaft hole fixing seat, 632-Mounting bolt, 633-Fixed hole plate, 634-Elastic locking claw, 64-Elastic end buckle seat, 641-Movable slider, 642-Triangular shaft seat, 643-Positioning slot, 644-Compression spring, 645-Limiting protrusion, 646-Concave groove, 7-Mounting bracket, 8-CCD industrial camera, 9-Display. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-9 This utility model provides a device for detecting defects in laminated film, including a detection frame 1, a backlight source 5 embedded in the detection frame 1, and laminated film limiting tensioners 6 connected to the detection frame 1 on both sides of the backlight source 5. Furthermore, a CCD industrial camera 8 is arranged in a rectangular array above the backlight source 5. The adhesive film limiting tensioner 6 includes two symmetrically arranged fixed brackets 63 that are fixedly connected to the detection frame 1. The two fixed brackets 63 are movably connected to a bottom guide roller 61. A pressing and flattening roller 62 is provided above the bottom guide roller 61, and both ends of the pressing and flattening roller 62 are movably connected to elastic end buckles 64 that engage with the fixed brackets 63.

[0026] By adopting the above technical solution, the laminated film passes between the bottom guide roller 61 and the pressing and flattening roller 62. The bottom guide roller 61 and the pressing and flattening roller 62, which are provided in two sets, are located on both sides of the backlight source 5. This allows the laminated film passing over the backlight source 5 to be flattened and tensioned, thereby ensuring the flatness of the laminated film during inspection, preventing wrinkles from appearing during the inspection process, improving the inspection accuracy of the laminated film defect inspection, and thus improving the inspection accuracy of the equipment.

[0027] Furthermore, the fixed bracket 63 includes a shaft hole fixing bracket 631. Both sides of the shaft hole fixing bracket 631 are integrally provided with fixing hole plates 633. Each fixing hole plate 633 is provided with a mounting bolt 632, and the mounting bolt 632 passes through the fixing hole plate 633 and is fixedly connected to the testing frame 1.

[0028] More specifically, the shaft hole fixing seat 631 is integrally provided with symmetrical elastic locking claws 634 on its upper part, and the end of the elastic locking claw 634 away from the shaft hole fixing seat 631 is provided with a positioning protrusion corresponding to the elastic end buckle 64. The elastic end buckle 64 includes a movable slider 641. The movable slider 641 has a symmetrically arranged positioning groove 643 corresponding to the elastic locking claw 634 on its upper surface, and the positioning protrusion at the end of the elastic locking claw 634 engages with the positioning groove 643.

[0029] Furthermore, the two elastic locking claws 634 are respectively disposed at both ends of the movable slider 641, and the elastic locking claws 634 are slidably connected to the movable slider 641. Moreover, a triangular shaft seat 642 is slidably connected below the movable slider 641, and the triangular shaft seat 642 is movably connected to both ends of the pressing and flattening roller 62.

[0030] By adopting the above technical solution, pressing down on the movable slider 641 separates the positioning slot 643 on the movable slider 641 from the end of the elastic locking claw 634. Then, the end of the elastic locking claw 634 is separated to both sides. At this time, the spring between the movable slider 641 and the triangular shaft seat 642 will push the movable slider 641 to move upward, so that the movable slider 641 passes over the top of the elastic locking claw 634. Then, the movable slider 641 moves upward, and the movable slider 641 drives the triangular shaft seat 642 to separate from the inside of the elastic locking claw 634, thereby facilitating the disassembly of the pressing and flattening roller 62, and making it convenient for the staff to place the adhesive film between the bottom guide roller 61 and the pressing and flattening roller 62.

[0031] Furthermore, the inner ends of the movable slider 641 are provided with concave grooves 646, and both ends of the triangular shaft seat 642 are integrally provided with limiting protrusions 645 corresponding to the concave grooves 646, and the limiting protrusions 645 and the concave grooves 646 slide in cooperation. A compression spring 644 is also provided between the movable slider 641 and the triangular shaft seat 642, and the compression spring 644 is located inside the movable slider 641.

[0032] By adopting the above technical solution, during normal use, the compression spring 644 will apply a downward thrust to the triangular shaft seat 642, thereby pushing the pressing and flattening roller 62 connected to the triangular shaft seat 642 to move downward, so that the pressing and flattening roller 62 fits against the bottom guide roller 61, thereby ensuring the tension and flattening of the adhesive film, and also ensuring that the distance between the adhesive film and the backlight source 5 remains consistent, preventing the appearance from being affected during detection due to distance, and improving detection accuracy.

[0033] Furthermore, a mounting bracket 7 is fixedly connected to the inspection frame 1 above the backlight source 5, and the CCD industrial camera 8 is fixedly connected to the mounting bracket 7 in a rectangular array, while a display 9 is fixedly connected to the side of the inspection frame 1. Both ends of the testing frame 1 are movably connected to transmission rollers 2.

[0034] Furthermore, a clamping roller 3 is provided above the transmission roller 2 at either end, and a drive motor 4 is fixedly connected to the end of the detection frame 1 near the clamping roller 3, and the drive motor 4 is in transmission cooperation with the transmission roller 2 provided on the same side.

[0035] Furthermore, the drive motor 4 is fixedly connected to a transmission pulley at its end, and there are two transmission pulleys. The other one is fixedly connected to the end of the transmission roller 2 on the same side. A transmission belt is also sleeved on the outside of the two transmission pulleys. The output shaft of the drive motor 4 drives the transmission roller 2 to rotate through the friction between the transmission pulley and the transmission belt. Then, in conjunction with the clamping roller 3, it drives the adhesive film to move on the inspection frame 1.

[0036] The backlight source 5 and the CCD industrial camera are electrically connected to the display 9. When the laminated film passes over the backlight source 5, the light emitted by the backlight source 5 can completely pass through the laminated film. When there are bubbles or other defects in the laminated film, the light will change, thus affecting the appearance of the laminated film. Finally, the appearance of the laminated film is detected by the CCD industrial camera 8 above the laminated film.

[0037] The working principle of this utility model is as follows: In use, first press down on the movable slider 641 to separate the positioning groove 643 on the movable slider 641 from the end of the elastic locking claw 634. Then, separate the end of the elastic locking claw 634 to both sides. At this time, the spring between the movable slider 641 and the triangular shaft seat 642 will push the movable slider 641 upward, causing it to pass over the top of the elastic locking claw 634. Then, move the movable slider 641 upward, causing the triangular shaft seat 642 to separate from the inside of the elastic locking claw 634. Then, insert the film from the end of the device away from the clamping roller 3, pass over the bottom guide roller 61 and the backlight source 5, and then pass between the transmission roller 2 and the clamping roller 3 at the other end of the device. Finally, reinstall the pressing and flattening roller 62 above the bottom guide roller 61 and press and flatten it. The elastic end buckle 64 at the end of roller 62 is engaged with the inner side of the elastic locking claw 634. The compression spring 644 applies a downward pushing force to the triangular shaft seat 642, thereby pushing the pressing and flattening roller 62 connected to the triangular shaft seat 642 to move downward, so that the pressing and flattening roller 62 is in contact with the bottom guide roller 61, ensuring that the distance between the laminated film and the backlight source 5 remains consistent. Then, the output shaft of the drive motor 4 drives the transmission roller 2 to rotate through the belt drive, so that the laminated film moves above the backlight source 5. The light emitted by the backlight source 5 can pass through the laminated film to inspect its appearance. The CCD industrial camera 8 above the laminated film takes pictures of the light after it is transmitted. When defects occur, the light will change slightly, which is captured by the CCD industrial camera 8. The structure is simple, the operation is very convenient, and it effectively reduces the intensity of manual labor.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting defects in laminated film, characterized in that: The device includes a testing frame (1), on which a backlight source (5) is embedded. Both sides of the backlight source (5) are provided with a film limiting tensioner (6) connected to the testing frame (1). A CCD industrial camera (8) is also arranged in a rectangular array above the backlight source (5). Among them, the adhesive film limiting tensioner (6) includes two symmetrically arranged fixed brackets (63) that are fixedly connected to the detection frame (1). The two fixed brackets (63) are movably connected to bottom guide rollers (61). A pressing and flattening roller (62) is provided above the bottom guide roller (61), and both ends of the pressing and flattening roller (62) are movably connected to elastic end buckles (64) that engage with the fixed brackets (63).

2. The adhesive film defect detection device according to claim 1, characterized in that: The fixed bracket (63) includes a shaft hole fixing seat (631). Both sides of the shaft hole fixing seat (631) are integrally provided with fixing hole plates (633). Each fixing hole plate (633) is provided with a mounting bolt (632) passing through it. The mounting bolt (632) passes through the fixing hole plate (633) and is fixedly connected to the testing frame (1).

3. The adhesive film defect detection device according to claim 2, characterized in that: The shaft hole fixing seat (631) is integrally provided with symmetrical elastic locking claws (634) on its upper part, and the end of the elastic locking claw (634) away from the shaft hole fixing seat (631) is provided with a positioning protrusion corresponding to the elastic end buckle (64).

4. The adhesive film defect detection device according to claim 3, characterized in that: The elastic end buckle (64) includes a movable slider (641), and a positioning slot (643) corresponding to the elastic locking claw (634) is symmetrically opened on the upper part of the movable slider (641), and the positioning protrusion at the end of the elastic locking claw (634) engages with the positioning slot (643).

5. The adhesive film defect detection device according to claim 4, characterized in that: The two elastic locking claws (634) are respectively disposed at both ends of the movable slider (641), and the elastic locking claws (634) are slidably connected to the movable slider (641). Furthermore, a triangular shaft seat (642) is slidably connected below the movable slider (641), and the triangular shaft seat (642) is movably connected to both ends of the pressing and flattening roller (62).

6. The adhesive film defect detection device according to claim 5, characterized in that: The movable slider (641) is provided with concave grooves (646) at both ends of its inner side, and the triangular shaft seat (642) is provided with limiting protrusions (645) corresponding to the concave grooves (646) at both ends of its inner side, and the limiting protrusions (645) and the concave grooves (646) slide in cooperation. A compression spring (644) is also provided between the movable slider (641) and the triangular shaft seat (642), and the compression spring (644) is located inside the movable slider (641).

7. The adhesive film defect detection device according to claim 1, characterized in that: The backlight source (5) is provided with a mounting bracket (7) fixedly connected to the inspection frame (1) above it, and the CCD industrial camera (8) is fixedly connected to the mounting bracket (7) in a rectangular array, while the side of the inspection frame (1) is also fixedly connected to a display (9). Both ends of the testing frame (1) are movably connected to transmission rollers (2).

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