Reflective film defect detection device

Abstract

The utility model discloses a reflective film defect detection device which comprises a bottom frame, the upper end of the bottom frame is fixedly connected with a protection frame, and a driving roller set is arranged in the protection frame and used for conveying and guiding a reflective film body; the mounting frame is arranged on the outer side of the bottom frame and the protective frame, an image acquisition module is arranged on the upper portion of the mounting frame, an LED is arranged in the bottom frame, the image acquisition module corresponds to the LED in position, and the reflective film body is located between the image acquisition module and the LED; the EC encoder is arranged on the inner side of the protection frame and used for stroke detection of the reflective film body. According to the reflective film defect detection device provided by the utility model, through the matching design of multiple structures, compared with a traditional manual detection method, the detection efficiency can be greatly improved, and the labor cost and the time cost can be reduced, so that the requirements of modern industrial production are met.

Description

Technical Field

[0001] The utility model relates to the technical field of reflective films, in particular to a reflective film defect detection device. Background Art

[0002] According to statistics from relevant departments of my country, there were 81,562 traffic accidents at night in 1996, with 2,535 deaths, accounting for 28.3% of the total number of deaths due to traffic accidents throughout the year. Using reflective materials to set up eye-catching traffic signs and vehicle license plates under no lighting conditions or wearing clothes and hats decorated with reflective materials can reduce the traffic accident rate by 30% to 40%. In 1998, the number of deaths due to traffic accidents in major countries in the world was 601,471, and my country alone had 78,067, ranking first in the world. According to comprehensive analysis, the traffic accident rate in major cities across the country is significantly higher at night than during the day. The peak of accidents is concentrated in the period from 8 to 10 pm. One of the reasons is the low visibility of the road. The emergence of reflective materials has successfully solved the problem of "seeing" and "being seen" in night driving. The directional reflective properties of reflective materials determine that they have become a necessary consumable material for ensuring people's livelihood safety, effectively reducing the accident rate, improving driving efficiency, and ultimately becoming traffic safety.

[0003] With the rapid development of industrial automation and intelligent manufacturing, reflective film, as a very important new material industry, has been included in the "National Key Encouraged Industry, Product and Technology Catalog" as a new material industry. The development of the reflective film industry is of great significance to ensuring traffic safety and creating green transportation. It has been included in the "National Key Encouraged Development of Industries, Products and Technologies Catalog". Surface defect detection of reflective film has become a key link in ensuring product quality and production efficiency. For reflective film with retro-reflective materials, its surface defect detection is particularly complex.

[0004] Traditional manual inspection methods are often limited by inspection efficiency and accuracy and cannot meet the needs of modern industrial production. To this end, the present application proposes a reflective film defect detection device to provide a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0005] Based on this, it is necessary to provide a reflective film defect detection device to address the above-mentioned technical problems. Through the coordinated design of multiple structures, the device can greatly improve the detection efficiency and reduce labor and time costs compared to traditional manual detection methods, thereby meeting the needs of modern industrial production.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A reflective film defect detection device is used for reflective film defect detection.

[0008] The reflective film defect detection device specifically comprises:

[0009] A bottom frame, the upper end of which is fixedly connected to a protective frame, and a driving roller group is arranged inside the protective frame for conveying and guiding the reflective film body;

[0010] A mounting frame, which is arranged outside the base frame and the protective frame, an image acquisition module is arranged on the upper part of the mounting frame, an LED is arranged inside the base frame, the image acquisition module corresponds to the position of the LED, and the reflective film body is located between the image acquisition module and the LED;

[0011] The EC encoder is arranged inside the protective frame and is used for detecting the stroke of the reflective film body.

[0012] As a preferred embodiment of the reflective film defect detection device provided by the utility model, the driving roller group includes a conveying roller and a follower roller, and the conveying rollers are rotatably connected at both ends of the inner upper end of the protective frame, and the conveying rollers are driven by a motor; the follower rollers are rotatably connected at both ends of the inner lower end of the protective frame, and the reflective film body passes through the upper end of the conveying roller at one end of the protective frame, the lower end of the follower roller at one end of the protective frame, the lower end of the follower roller at the other end of the protective frame, and the upper end of the conveying roller at the other end of the protective frame in sequence.

[0013] As a preferred embodiment of the reflective film defect detection device provided by the utility model, the mounting frame includes a movable frame, the movable frame is located above the protective frame, the two ends of the movable frame are located on both sides of the protective frame, the lower end of the movable frame extends to the positions on both sides of the base frame, and a follower frame is arranged inside the base frame, both ends of the follower frame are vertically slidably connected to the base frame, the LED is fixed to the upper end of the follower frame, and the lower ends of the two ends of the movable frame are fixedly connected to the two ends of the follower frame.

[0014] As a preferred embodiment of the reflective film defect detection device provided by the utility model, a lifting mechanism is provided on both sides of the protective frame, the lifting mechanism is fixedly connected to the protective frame through a fixed frame, the telescopic end of the lifting mechanism is fixedly connected to the end of the movable frame, both sides of the protective frame are fixedly connected to the limit frame, both ends of the movable frame are located on the inner side of the limit frame at the same end, and the movable frame is slidably connected to the limit frame.

[0015] As a preferred embodiment of the reflective film defect detection device provided by the utility model, a movable horizontal plate is laterally arranged on the upper inner part of the movable frame, the image acquisition module is fixedly connected to one side of the movable horizontal plate, both ends of the movable frame are provided with limiting grooves, the ends of the movable horizontal plate are vertically slidably connected to the limiting grooves, the top of the movable frame is fixedly connected to an extension plate 1, the upper end of the extension plate 1 is fixedly connected to a lifting mechanism 2, the outer side of the movable horizontal plate is fixedly connected to an extension plate 2, and the telescopic end of the lifting mechanism 2 is fixedly connected to the extension plate 2.

[0016] As a preferred implementation of the reflective film defect detection device provided by the utility model, a plurality of support seats are arranged at the lower end of the base frame.

[0017] As a preferred embodiment of the reflective film defect detection device provided by the utility model, the support seat includes a seat body, the upper end of the seat body is fixedly connected to the base frame, the lower end of the seat body is plugged with an anti-slip pad, and the anti-slip pad is detachably fixedly connected to the seat body by fixing bolts.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The reflective film defect detection device provided by the utility model has a multi-structure coordinated design, so that compared with the traditional manual detection method, the detection scheme of the device can greatly improve the detection efficiency, reduce the labor cost and time cost, thereby meeting the needs of modern industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of the reflective film defect detection device provided by the utility model;

[0022] Figure 2 A cross-sectional view of the overall structure of the reflective film defect detection device provided by the utility model;

[0023] Figure 3 A schematic diagram of the structure of a mounting frame for a reflective film defect detection device provided by the utility model;

[0024] Figure 4 A schematic diagram of the adjustment structure of the image acquisition module of the reflective film defect detection device provided by the utility model;

[0025] Figure 5 This is an enlarged structural diagram of the support base of the reflective film defect detection device provided by the utility model.

[0026] The markings in the figure are as follows:

[0027] 1. Base frame; 2. Protective frame; 3. Reflective film body; 4. Driving roller group; 5. Mounting frame; 6. Image acquisition module; 7. LED; 8. EC encoder; 9. Conveying roller; 10. Follow-up roller; 11. Movable frame; 12. Follow-up frame; 13. Lifting mechanism 1; 14. Fixed frame; 15. Limiting frame; 16. Movable horizontal plate; 17. Limiting slot; 18. Extension plate 1; 19. Lifting mechanism 2; 20. Extension plate 2; 21. Seat body; 22. Anti-skid pad; 23. Fixing bolts. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] As described in the background art, traditional manual detection methods are often limited in detection efficiency and accuracy and cannot meet the needs of modern industrial production.

[0030] In order to solve this technical problem, the utility model provides a reflective film defect detection device, which is applied to reflective film defect detection.

[0031] Specifically, please refer to Figure 1 - Figure 3 , the reflective film defect detection device specifically includes:

[0032] A bottom frame 1, the upper end of which is fixedly connected to a protective frame 2, and a driving roller group 4 is arranged inside the protective frame 2 for conveying and guiding the reflective film body 3;

[0033] A mounting frame 5 is arranged outside the base frame 1 and the protective frame 2. An image acquisition module 6 is arranged on the upper part of the mounting frame 5. An LED 7 is arranged inside the base frame 1. The positions of the image acquisition module 6 and the LED 7 correspond. The reflective film body 3 is located between the image acquisition module 6 and the LED 7.

[0034] The EC encoder 8 is arranged inside the protection frame 2 and is used for detecting the stroke of the reflective film body 3 .

[0035] The reflective film defect detection device provided by the utility model has a multi-structure coordinated design, so that compared with the traditional manual detection method, the detection scheme of the device can greatly improve the detection efficiency, reduce the labor cost and time cost, thereby meeting the needs of modern industrial production.

[0036] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0037] Embodiment 1:

[0038] Please refer to Figure 1 - Figure 3 , a reflective film defect detection device, comprising:

[0039] The bottom frame 1 has a protective frame 2 fixedly connected to its upper end, and a driving roller group 4 is arranged inside the protective frame 2 for conveying and guiding the reflective film body 3; specifically, the driving roller group 4 includes a conveying roller 9 and a follower roller 10, and both ends of the inner upper end of the protective frame 2 are rotatably connected with the conveying roller 9, which is driven by a motor; both ends of the inner lower end of the protective frame 2 are rotatably connected with the follower roller 10, and the reflective film body 3 passes through the upper end of the conveying roller 9 at one end of the protective frame 2, the lower end of the follower roller 10 at one end of the protective frame 2, the lower end of the follower roller 10 at the other end of the protective frame 2, and the upper end of the conveying roller 9 at the other end of the protective frame 2 in sequence.

[0040] The mounting frame 5 is arranged on the outside of the base frame 1 and the protective frame 2. An image acquisition module 6 is arranged on the upper part of the mounting frame 5 for image acquisition. An LED 7 is arranged inside the base frame 1 for providing lighting. The image acquisition module 6 corresponds to the position of the LED 7. The reflective film body 3 is located between the image acquisition module 6 and the LED 7. Specifically, the mounting frame 5 includes a movable frame 11. The movable frame 11 is located above the protective frame 2. The two ends of the movable frame 11 are located on both sides of the protective frame 2. The lower end of the movable frame 11 extends to the positions on both sides of the base frame 1. A follower frame 12 is arranged inside the base frame 1. Both ends of the follower frame 12 are vertically slidably connected to the base frame 1. The LED 7 is fixed on the upper end of the follower frame 12. The lower ends of both ends of the movable frame 11 are fixedly connected to both ends of the follower frame 12.

[0041] The EC encoder 8 is arranged inside the protection frame 2 and is used for detecting the stroke of the reflective film body 3 .

[0042] After the starting mark position of the reflective film body 3 appears, the operator clicks the "Start Detection" button of the "Reflective Film Defect Online Detection System" software, so that the PLC starts counting the output pulses of the EC encoder 8, thereby ensuring that the counting start position of the EC encoder 8, 0 meters, is aligned with the starting mark position of the reflective film.

[0043] An image acquisition module 6 (camera and array lens) is arranged in the width direction of the reflective film body 3. When the reflective film body 3 moves to the right under the drive roller group 4, the displacement signal of the reflective film body 3 is sent to the PLC through the installed EC encoder 8. The PLC records the displacement signal output by the EC encoder 8. Whenever the reflective film body 3 moves over an integer multiple of 0.6 meters, the PLC sends a photo signal to the image acquisition module 6. The image acquisition module 6 sends the surface image of the reflective film body 3 in the current area to the desktop host. The size of the area captured by each image sent is 300mm wide * 600mm long. At the same time, the PLC also sends the current position signal to the desktop host.

[0044] The "image recognition module" in the "reflective film defect online detection system software" processes the currently obtained image to determine whether there are various defects on the reflective film body 3. If there are defects on the reflective film body 3, the "image recognition module" further processes it, including determining the type (damage, stains, wrinkles, etc.) and size of the defect, extracting its coordinate position in the current image, and combining the position of the current image block generated by the EC encoder 8 to jointly generate the absolute position of the defect in the entire roll of reflective film body 3. Afterwards, the "reflective film defect online detection system software" saves the defect type, size, absolute position, and image to the database to provide data support for the subsequent cutting of the reflective film body 3. If there are no above defects, the current image is not saved.

[0045] The reflective film body 3 does not need to stop during the whole process, and runs continuously until the entire roll of reflective film body 3 has completed the inspection.

[0046] Embodiment 2:

[0047] The reflective film defect detection device provided in Example 1 is further optimized. Specifically, Figure 3-Figure 4 As shown, a lifting mechanism 13 is provided on both sides of the protective frame 2, and the lifting mechanism 13 is fixedly connected to the protective frame 2 through a fixed frame 14. The telescopic end of the lifting mechanism 13 is fixedly connected to the end of the movable frame 11, and both sides of the protective frame 2 are fixedly connected to the limiting frame 15. Both ends of the movable frame 11 are located on the inner side of the limiting frame 15 at the same end, and the movable frame 11 is slidably connected to the limiting frame 15.

[0048] Through the above-mentioned structural design, the movable frame 11 can be pushed and pulled to move vertically up and down by starting the lifting mechanism 13. At the same time, through the connection between the movable frame 11 and the end of the follower frame 12, the follower frame 12 moves with the movable frame 11, and then the height position of the image acquisition module 6 and the LED 7 can be adjusted through the movement of the movable frame 11 and the follower frame 12, so that adaptive adjustment can be made according to the detection requirements; the shaking phenomenon of the movable frame 11 during the movement can be reduced by the guidance and limitation of the limit frame 15.

[0049] Embodiment 3:

[0050] The reflective film defect detection device provided in Example 1 is further optimized. Specifically, Figure 4 As shown, a movable horizontal plate 16 is laterally arranged on the upper inner part of the movable frame 11, the image acquisition module 6 is fixedly connected to one side of the movable horizontal plate 16, both ends of the movable frame 11 are provided with limiting grooves 17, the ends of the movable horizontal plate 16 are vertically slidably connected to the limiting grooves 17, an extension plate 18 is fixedly connected to the top of the movable frame 11, a lifting mechanism 2 19 is fixedly connected to the upper end of the extension plate 18, an extension plate 20 is fixedly connected to the outer side of the movable horizontal plate 16, and the telescopic end of the lifting mechanism 2 19 is fixedly connected to the extension plate 20.

[0051] Through the above structural design, by starting the lifting mechanism 19, the extension plate 20 can be pushed and pulled to drive the movable horizontal plate 16 to move up and down. The movement of the movable horizontal plate 16 can drive the image acquisition module 6 to follow the movement, so that the distance between the image acquisition module 6 and the LED 7 can be adaptively adjusted according to the detection requirements.

[0052] Embodiment 4:

[0053] The reflective film defect detection device provided in Example 1 is further optimized. Specifically, Figure 5 As shown, a plurality of support seats are provided at the lower end of the base frame 1. Specifically, the support seats include a seat body 21, the upper end of the seat body 21 is fixedly connected to the base frame 1, and the lower end of the seat body 21 is plugged with an anti-skid pad 22, which is detachably fixedly connected to the seat body 21 by a fixing bolt 23.

[0054] Through the above structural design, the bottom of the base frame 1 can be protected by the support seat. When the anti-slip pad 22 is severely worn, the fixing bolt 23 can be removed, so that the anti-slip pad 22 can be taken out from the bottom of the seat body 21, thereby facilitating the replacement of the anti-slip pad 22.

Claims

1. A reflective film defect detection device, characterized in that: include: A base frame (1), the upper end of the base frame (1) being fixedly connected to a protective frame (2), the interior of the protective frame (2) being provided with a driving roller group (4) for conveying and guiding the reflective film body (3); A mounting frame (5) is arranged outside the base frame (1) and the protective frame (2); an image acquisition module (6) is arranged on the upper part of the mounting frame (5); an LED (7) is arranged inside the base frame (1); the positions of the image acquisition module (6) and the LED (7) correspond; and the reflective film body (3) is located between the image acquisition module (6) and the LED (7); An EC encoder (8) is arranged on the inner side of the protective frame (2) and is used for detecting the travel of the reflective film body (3).

2. The reflective film defect detection device according to claim 1, characterized in that: The driving roller group (4) comprises a conveying roller (9) and a follower roller (10). The conveying rollers (9) are rotatably connected at both ends of the inner upper end of the protective frame (2), and the conveying rollers (9) are driven by a motor; the follower rollers (10) are rotatably connected at both ends of the inner lower end of the protective frame (2), and the reflective film body (3) passes through the upper end of the conveying roller (9) at one end of the protective frame (2), the lower end of the follower roller (10) at one end of the protective frame (2), the lower end of the follower roller (10) at the other end of the protective frame (2), and the upper end of the conveying roller (9) at the other end of the protective frame (2) in sequence.

3. The reflective film defect detection device according to claim 1, characterized in that: The mounting frame (5) comprises a movable frame (11), the movable frame (11) is located above the protective frame (2), the two ends of the movable frame (11) are located at positions on both sides of the protective frame (2), the lower end of the movable frame (11) extends to positions on both sides of the base frame (1), a follower frame (12) is arranged inside the base frame (1), both ends of the follower frame (12) are vertically slidably connected to the base frame (1), the LED (7) is fixed to the upper end of the follower frame (12), and the lower ends of both ends of the movable frame (11) are fixedly connected to both ends of the follower frame (12).

4. The reflective film defect detection device according to claim 3, characterized in that: A lifting mechanism (13) is provided on both sides of the protection frame (2); the lifting mechanism (13) is fixedly connected to the protection frame (2) via a fixed frame (14); a telescopic end of the lifting mechanism (13) is fixedly connected to an end of a movable frame (11); both sides of the protection frame (2) are fixedly connected to a limiting frame (15); both ends of the movable frame (11) are located inside the limiting frame (15) at the same end; and the movable frame (11) is slidably connected to the limiting frame (15).

5. The reflective film defect detection device according to claim 4, characterized in that: A movable horizontal plate (16) is transversely arranged on the upper inner side of the movable frame (11); the image acquisition module (6) is fixedly connected to one side of the movable horizontal plate (16); both ends of the movable frame (11) are provided with limit grooves (17); the ends of the movable horizontal plate (16) are vertically slidably connected to the limit grooves (17); the top of the movable frame (11) is fixedly connected to an extension plate 1 (18); the upper end of the extension plate 1 (18) is fixedly connected to a lifting mechanism 2 (19); the outer side of the movable horizontal plate (16) is fixedly connected to an extension plate 2 (20); the telescopic end of the lifting mechanism 2 (19) is fixedly connected to the extension plate 2 (20).

6. The reflective film defect detection device according to claim 1, characterized in that: A plurality of support seats are arranged at the lower end of the base frame (1).

7. The reflective film defect detection device according to claim 6, characterized in that: The support seat comprises a seat body (21), the upper end of the seat body (21) is fixedly connected to the base frame (1), the lower end of the seat body (21) is plug-connected with an anti-skid pad (22), and the anti-skid pad (22) is detachably fixedly connected to the seat body (21) via a fixing bolt (23).

Images