A composite film detection device facilitating sample cutting

Abstract

This utility model relates to a composite film testing device that facilitates cutting and sampling. It includes a main body and a control computer. The main body includes a detection camera and a sampling mechanism located on one side, a roller that transports the composite film past the front of the detection camera, and a motor that drives the roller. The sampling mechanism includes a cutting blade, a back plate, and a rectangular sampling frame. The back plate is located on the side of the composite film facing away from the detection camera. The main body has a longitudinal slide rail located on the side of the back plate. A lifting seat is slidably connected to the longitudinal slide rail, and a transverse slide rail is slidably connected to the transverse slide rail. A translation seat is slidably connected to the transverse slide rail, and the rectangular frame is connected to the translation seat. This allows the moving sampling frame to support and guide the cutting blade on the front of the composite film, while the back plate supports the back of the composite film, enabling more precise cutting of rectangular film samples. When detecting surface defects, the sampling frame can be moved to the longitudinal slide rail, offset from the back plate, to avoid obstructing the detection camera.

Description

Technical Field

[0001] This invention relates to the field of composite membrane testing devices, and more particularly to a composite membrane testing device that is easy to cut and sample. Background Technology

[0002] Packaging films are typically made by laminating two or more films from PET, VMPET, pearlescent film, aluminum foil, heat-sealable OPP, heat-sealable VMOPP, matte OPP, heat-sealable pearlescent film, and PE materials. After lamination, the packaging film is sent to an inspection device where a camera detects surface defects. Finally, the composite film is wound onto a spool. To facilitate sample cutting for heat sealing and tensile testing, a rectangular piece of film is cut directly from the unfolded composite film before the inspection device rolls it up. Current sampling methods typically involve workers using a utility knife to cut the unwound portion of the composite film. While this protects the inspection device from blade damage, the film is prone to wobbling during cutting, making precise control of the sample shape difficult. It also easily leaves cuts in other parts of the composite film, causing tearing during winding. Therefore, designing a composite film testing device that can improve film stability during sampling and cutting, and is less likely to produce excess cuts, has become an urgent technical problem to be solved. Summary of the Invention

[0003] To solve the above problems, this utility model provides a composite membrane testing device that facilitates cutting and sampling.

[0004] The present invention provides a composite film testing device for easy cutting and sampling, comprising a main body and a control computer. The main body includes a detection camera and a sampling mechanism located on one side, a roller for conveying the composite film through the front of the detection camera, and a motor connected to the roller for driving. The sampling mechanism includes a cutting blade, a back plate, and a rectangular sampling frame. The back plate is located on the side of the composite film facing away from the detection camera. The main body is provided with a longitudinal slide rail located on the side of the back plate. A lifting seat is slidably connected to the longitudinal slide rail. A transverse slide rail is slidably connected to the transverse slide rail. A translation seat is slidably connected to the transverse slide rail. The rectangular frame is connected to the translation seat. The detection camera has a dual-camera structure. The control computer is electrically connected to the motor and the detection camera.

[0005] With the above structure, the control computer starts the motor and the detection camera. The rollers convey the composite film between the back plate and the detection camera. The detection camera captures an image of the film surface and sends it to the control computer for analysis to determine if surface defects exist. The dual-camera structure of the detection camera enables binocular visual inspection, improving the accuracy of surface defect identification. The composite film is then conveyed to the end rollers and rolled up. When sampling is required, the rollers are paused, and the lifting seat moves vertically along the longitudinal slide rail, driving the transverse slide rail to move vertically. The translation seat moves the sampling frame laterally along the transverse slide rail, allowing the sampling frame to move freely on the front of the back plate. After aligning the sampling frame with the area to be sampled, Workers hold the edge of the sampling frame to fix its position, then use a cutting blade to move it along the edge of the frame. The blade tip presses the composite film against the back plate from the front to cut the film. The back plate provides support on the back of the composite film, preventing it from swaying back and forth. This ensures the rectangular film sample is stable in shape, reducing the likelihood of curved edges or extra cuts, and preventing tearing when rolling up the film. This system allows the moving sampling frame to support and guide the cutting blade from the front of the composite film, while the back plate provides support from the back, resulting in more precise cutting of rectangular film samples. When inspecting surface defects, the sampling frame can be moved to the longitudinal slide rail, offset from the back plate, to avoid obstructing the inspection camera.

[0006] As a further improvement of this utility model, the rectangular frame includes L-shaped positioning rods located at the four corners. The L-shaped positioning rods are arranged from left to right and from top to bottom as a first positioning rod, a second positioning rod, a third positioning rod, and a fourth positioning rod. The lower end face of the first positioning rod and the second positioning rod is provided with a longitudinal first insertion hole, and the right end face of the first positioning rod and the third positioning rod is provided with a transverse second insertion hole. The upper end face of the third positioning rod and the fourth positioning rod is provided with a first telescopic rod that is longitudinally inserted into the first insertion hole, and the left end face of the second positioning rod and the fourth positioning rod is provided with a second telescopic rod that is transversely inserted into the second insertion hole. The third positioning rod or the fourth positioning rod is connected to the top of the translation seat.

[0007] With the above structure, by pulling the first positioning rod, the second positioning rod, the third positioning rod and the fourth positioning rod, the first telescopic rod slides longitudinally along the first insertion hole and the second telescopic rod slides laterally along the second insertion hole, changing the spacing of the four L-shaped positioning rods, thereby adjusting the length of each side of the rectangular frame. After that, by holding the sampling frame and fixing it before the composite film, a sample of appropriate size can be cut according to the pattern layout of the composite film for testing.

[0008] As a further improvement of this utility model, the back plate is a ferromagnetic metal plate, and magnets are provided on the side of the L-shaped positioning rod facing the back plate. The bottom of the third or fourth positioning rod is provided with an elastic support plate for connecting the top of the translation seat. The magnetic force generated by the magnet adsorbing the back plate is greater than the elastic force generated by the bending of the elastic plate.

[0009] With the above structure, an elastic support plate is provided at the bottom of the third or fourth positioning rod to connect to the top of the translation seat. This plate can press the sampling frame closer to the back plate. The magnet on the L-shaped positioning rod attracts the ferromagnetic back plate, pressing the composite film tightly against the back plate. At the same time, the elastic support plate bends in coordination with the movement of the sampling frame, further preventing the composite film from swinging during cutting.

[0010] As a further improvement of this utility model, the magnet is installed at the bent part of the L-shaped positioning rod.

[0011] With the above structure, the magnet is installed at the bend of the L-shaped positioning rod, so that the magnet will not interfere with the longitudinal sliding of the first telescopic rod along the first insertion hole and the lateral sliding of the second telescopic rod along the second insertion hole.

[0012] As a further improvement of this utility model, the ends of the first telescopic rod and the second telescopic rod are provided with elastic pressure plates, which abut against the inner walls of the first insertion hole and the second insertion hole respectively.

[0013] With the above structure, the elastic pressure plate abuts against the inner walls of the first and second insertion holes to generate friction, preventing the first and second telescopic rods from sliding along the holes due to their own weight. This allows the L-shaped positioning rod to maintain the size of the sampling frame without external force. Attached Figure Description

[0014] Figure 1 The diagram shown is a structural schematic of this utility model.

[0015] Figure 2 The diagram shown is a structural schematic of the present invention using a sampling frame.

[0016] Figure 3 The diagram shown is a schematic of the sampling frame split state structure.

[0017] 1-Main body of the equipment, 2-Control computer, 3-Detection camera, 4-Roller, 5-Back plate, 6-Sampling frame, 7-Longitudinal slide rail, 8-Lifting seat, 9-Transverse slide rail, 10-Transfer seat, 11-First positioning rod, 12-Second positioning rod, 13-Third positioning rod, 14-Fourth positioning rod, 15-First insertion hole, 16-Second insertion hole, 17-First telescopic rod, 18-Second telescopic rod, 19-Magnet, 20-Elastic support plate, 21-Elastic pressure plate, 22-Motor. Detailed Implementation

[0018] like Figures 1-3The present invention discloses a composite film detection device for easy cutting and sampling, comprising a main body 1 and a control computer 2. The main body 1 includes a detection camera 3 and a sampling mechanism located on one side, a roller 4 for conveying the composite film through the front of the detection camera 3, and a motor 22 connected to the roller 4 for driving. The sampling mechanism includes a cutting blade, a back plate 5 and a rectangular sampling frame 6. The back plate 5 is located on the side of the composite film away from the detection camera 3. The main body 1 is provided with a longitudinal slide rail 7 located on the side of the back plate 5. The longitudinal slide rail 7 is slidably connected to a lifting seat 8. The lifting seat 8 is connected to a transverse slide rail 9. The transverse slide rail 9 is slidably connected to a translation seat 10. The rectangular frame is connected to the translation seat 10. The detection camera 3 is a dual-camera structure. The control computer 2 is electrically connected to the motor 22 and the detection camera 3.

[0019] The control computer 2 starts the motor 22 and the detection camera 3. The roller 4 conveys the composite film between the back plate 5 and the detection camera 3. The detection camera 3 captures an image of the film surface and sends it to the control computer 2 to analyze whether there are surface defects. The detection camera 3 has a dual-camera structure, which can perform binocular vision inspection, improving the accuracy of surface defect identification. After that, the composite film is conveyed to the end roller 4 and rolled up. When sampling is required, the roller 4 is paused. The lifting seat 8 drives the transverse slide rail 9 to move vertically up and down along the longitudinal slide rail 7. The translation seat 10 drives the sampling frame 6 to move laterally along the transverse slide rail 9, realizing the free movement of the sampling frame 6 on the front of the back plate 5. The sampling frame 6 is moved and aligned with the area to be sampled. Afterwards, the worker holds the edge of the sampling frame 6 to fix its position, and moves it along the edge of the sampling frame 6. The blade tip presses the composite film onto the back plate 5 from the front to cut it. The back plate 5 provides support on the back of the composite film to prevent it from swinging back and forth, making the shape of the cut rectangular film sample stable and less prone to arc edges or extra cuts. This prevents tearing from extra cuts when the composite film is rolled up. The moving sampling frame 6 supports and guides the cutting blade on the front of the composite film, while the back plate 5 supports it on the back of the composite film, allowing for more precise cutting of rectangular film samples. When inspecting surface defects, the sampling frame 6 can be moved to the longitudinal slide rail 7, offset from the back plate 5, to avoid blocking the inspection camera 3.

[0020] The rectangular frame includes L-shaped positioning rods located at the four corners. The L-shaped positioning rods are arranged from left to right and from top to bottom as follows: first positioning rod 11, second positioning rod 12, third positioning rod 13, and fourth positioning rod 14. The lower end face of the first positioning rod 11 and the second positioning rod 12 is provided with a longitudinal first insertion hole 15. The right end face of the first positioning rod 11 and the third positioning rod 13 is provided with a transverse second insertion hole 16. The upper end face of the third positioning rod 13 and the fourth positioning rod 14 is provided with a first telescopic rod 17 that is longitudinally inserted into the first insertion hole 15. The left end face of the second positioning rod 12 and the fourth positioning rod 14 is provided with a second telescopic rod 18 that is transversely inserted into the second insertion hole 16. The third positioning rod 13 or the fourth positioning rod 14 is connected to the top of the translation seat 10.

[0021] By pulling the first positioning rod 11, the second positioning rod 12, the third positioning rod 13 and the fourth positioning rod 14, the first telescopic rod 17 slides longitudinally along the first insertion hole 15 and the second telescopic rod 18 slides laterally along the second insertion hole 16, changing the spacing of the four L-shaped positioning rods, thereby adjusting the length of each side of the rectangular frame. After that, by holding the sampling frame 6 and fixing it before the composite film, a sample of appropriate size can be cut according to the pattern layout of the composite film for testing.

[0022] The back plate 5 is a ferromagnetic metal plate. Magnets 19 are provided on the side of the L-shaped positioning rod facing the back plate 5. The bottom of the third positioning rod 13 or the fourth positioning rod 14 is provided with an elastic support plate 20 for connecting the top of the translation seat 10. The magnetic force generated by the magnet 19 adsorbing the back plate 5 is greater than the elastic force generated by the bending of the elastic plate.

[0023] The bottom of the third positioning rod 13 or the fourth positioning rod 14 is provided with an elastic support plate 20 for connecting the top of the translation seat 10. This plate can press the sampling frame 6 closer to the back plate 5. The magnet 19 on the L-shaped positioning rod attracts the ferromagnetic back plate 5, pressing the composite film tightly against the back plate 5. At the same time, the elastic support plate 20 bends in coordination with the movement of the sampling frame 6, further preventing the composite film from swinging during cutting.

[0024] Magnet 19 is installed at the bend of the L-shaped positioning rod.

[0025] By installing magnet 19 at the bent part of the L-shaped positioning rod, magnet 19 will not interfere with the travel of the first telescopic rod 17 sliding longitudinally along the first insertion hole 15 and the second telescopic rod 18 sliding laterally along the second insertion hole 16.

[0026] The ends of the first telescopic rod 17 and the second telescopic rod 18 are provided with elastic pressure plates 21, which abut against the inner walls of the first insertion hole 15 and the second insertion hole 16 respectively.

[0027] The elastic pressure plate 21 abuts against the inner walls of the first insertion hole 15 and the second insertion hole 16 to generate friction, preventing the first telescopic rod 17 and the second telescopic rod 18 from sliding along the holes due to their own weight, so that the L-shaped positioning rod can maintain the size of the sampling frame 6 without external force.

Claims

1. A composite film testing apparatus that facilitates sample cutting, characterized by: The device includes a main body (1) and a control computer (2). The main body (1) includes a detection camera (3) and a sampling mechanism located on one side, a roller (4) that transports the composite film through the front of the detection camera (3), and a motor (22) that drives the roller (4). The sampling mechanism includes a cutting blade, a back plate (5), and a rectangular sampling frame (6). The back plate (5) is located on the side of the composite film facing away from the detection camera (3). The main body (1) is provided with a longitudinal slide rail (7) located on the side of the back plate (5). The longitudinal slide rail (7) is slidably connected to a lifting seat (8). The lifting seat (8) is connected to a transverse slide rail (9). The transverse slide rail (9) is slidably connected to a translation seat (10). The rectangular frame is connected to the translation seat (10). The detection camera (3) is a dual-camera structure. The control computer (2) is electrically connected to the motor (22) and the detection camera (3).

2. The composite film testing device of claim 1, wherein: The rectangular frame includes L-shaped positioning rods located at the four corners. The L-shaped positioning rods are arranged from left to right and from top to bottom as a first positioning rod (11), a second positioning rod (12), a third positioning rod (13), and a fourth positioning rod (14). The lower end face of the first positioning rod (11) and the second positioning rod (12) is provided with a longitudinal first insertion hole (15). The right end face of the first positioning rod (11) and the third positioning rod (13) is provided with a transverse second insertion hole (16). The upper end face of the third positioning rod (13) and the fourth positioning rod (14) is provided with a first telescopic rod (17) that is longitudinally inserted into the first insertion hole (15). The left end face of the second positioning rod (12) and the fourth positioning rod (14) is provided with a second telescopic rod (18) that is transversely inserted into the second insertion hole (16). The third positioning rod (13) or the fourth positioning rod (14) is connected to the top of the translation seat (10).

3. The apparatus for detecting a composite film for facilitating sampling and cutting according to claim 2, wherein: The back plate (5) is a ferromagnetic metal plate. Magnets (19) are provided on the side of the L-shaped positioning rod facing the back plate (5). The bottom of the third positioning rod (13) or the fourth positioning rod (14) is provided with an elastic support plate (20) for connecting the top of the translation seat (10). The magnetic force generated by the magnet (19) adsorbing the back plate (5) is greater than the elastic force generated by the bending of the elastic plate.

4. The apparatus for detecting a composite film according to claim 3, wherein: The magnet (19) is installed at the bend of the L-shaped positioning rod.

5. The apparatus for testing a composite film for ease of sample cutting of claim 2, wherein: The ends of the first telescopic rod (17) and the second telescopic rod (18) are provided with elastic pressure plates (21), which abut against the inner walls of the first insertion hole (15) and the second insertion hole (16).

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