Detection device for light carbon-based thunder and lightning and electromagnetic shielding film production

Abstract

The invention belongs to the technical field of functional film material detection, and discloses a detection device for light carbon-based thunder and electromagnetic shielding film production, which comprises a detection table, a roll feeding assembly for conveying a film material and a detection device for detecting the film material, the detection table is rotatably provided with two rotating discs, the two rotating discs are symmetrically arranged, each rotating disc is provided with a plurality of first delivery assemblies and a plurality of second delivery assemblies, and the first delivery assemblies and the second delivery assemblies are arranged in an annular array at equal intervals and are alternately arranged; during working, the rotating disc rotates to drive the first delivery block and the second delivery block to rotate, when the first delivery block and the second delivery block rotate to the bottom of a membrane material, the top ends of the first delivery block and the second delivery block are just in contact with the lower surface of the membrane material, the membrane material is jacked upwards by a small distance, and a local lifting area is formed; and possible tiny wrinkles are instantly expanded and straightened, so that the wrinkles are prevented from influencing a detection result, and the detection accuracy is ensured.

Description

Technical Field

[0001] This invention belongs to the field of functional thin film material testing technology, specifically a testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films. Background Technology

[0002] Lightweight carbon-based lightning and electromagnetic shielding films are high-performance films formed by laminating graphene, carbon nanotubes, and other nanomaterials as functional phases onto a flexible polymer substrate using a precision coating process. Due to their excellent conductivity, extremely high specific shielding effectiveness, good flexibility, and lightweight characteristics, they have become indispensable key materials in next-generation aerospace, 5G mobile communication technology, and high-end flexible electronic devices. Any surface defects in this shielding film, such as scratches, pinholes, dirt, or uneven coating, will severely disrupt the continuity of its conductive network, leading to a sharp decline in its electromagnetic shielding effectiveness and lightning protection reliability. Therefore, comprehensive and accurate quality testing during the production process is crucial to ensuring product qualification rates and final application safety.

[0003] Currently, machine vision systems are commonly used on production lines to perform online inspections of the aforementioned shielding membranes. As the membrane material continuously and slowly passes through the inspection area, a CCD industrial camera located above the area acquires images of the moving membrane surface, and image processing algorithms identify and locate defects.

[0004] However, during the production process, variations in substrate stretching, coating liquid flow, and curing shrinkage can occur in different directions, resulting in residual stress within the membrane material. During transport, this internal stress is released, and combined with mechanical factors such as tension control and guide roller parallelism, it easily induces longitudinal or transverse micro-wrinkles in the membrane material. These wrinkles are three-dimensional structures, producing severe shadows, highlights, and geometric distortions when imaged by a CCD camera. This makes it difficult for traditional visual inspection algorithms to distinguish these optical artifacts caused by wrinkles from real physical defects, leading to persistently high false alarm rates (classifying good products as defective) and false negative rates (missing defective products). Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a testing device for the production of lightweight carbon-based lightning and electromagnetic shielding film, comprising a testing table, a winding assembly for conveying film material, and a testing device for testing film material.

[0007] Two rotating disks are rotatably mounted on the testing platform. The two rotating disks are symmetrically arranged. Each rotating disk is provided with multiple first delivery components and second delivery components. The multiple first delivery components and second delivery components are arranged in a circular array at equal intervals and are alternately arranged.

[0008] Both the first delivery component and the second delivery component are elastically mounted with connecting plates. A pressure block is fixedly mounted on one end of the connecting plate, and an arc-shaped protrusion is provided on the end of the pressure block facing the membrane material.

[0009] The first delivery component includes a first fixed rod, a first feeding rod, and a first delivery block. The first fixed rod is fixedly mounted on a rotating disk, the first feeding rod is slidably mounted inside the first fixed rod, and the first delivery block is mounted on top of the first feeding rod.

[0010] The second delivery assembly includes a second fixed rod, a second feeding rod, and a second delivery block. The second fixed rod is fixedly mounted on the rotating disk, the second feeding rod is slidably mounted inside the second fixed rod, and the second delivery block is mounted on top of the second feeding rod.

[0011] As a further technical solution of the present invention, a first slide rod is fixedly installed on both the first delivery block and the second delivery block. The end of the first slide rod away from the first delivery block and the second delivery block is slidably installed on the inner wall of the first slide groove, which is opened inside the detection table.

[0012] As a further technical solution of the present invention, a gear is fixedly connected to one end of the first slide rod, the gear is slidably installed inside the first slide groove, and a first rack plate is fixedly installed on both sides of the top of the first slide groove, and the first rack plate meshes with the gear.

[0013] As a further technical solution of the present invention, a second rack plate is provided on one side of each of the two first rack plates, and the second rack plates are staggered vertically from the first rack plates.

[0014] As a further technical solution of the present invention, a second sliding rod is fixedly connected to the outer wall of the connecting plate, the second sliding rod is slidably installed on the inner wall of the second sliding groove, the second sliding groove is opened inside the detection table, and a guide plate is fixedly installed inside the second sliding groove.

[0015] As a further technical solution of the present invention, the inner wall of the connecting plate is provided with a connecting groove, and the connecting groove is slidably connected to the first sliding rod.

[0016] As a further technical solution of the present invention, the outer wall of the first slide rod is equipped with a sliding plate, a first spring and a limiting plate, the limiting plate is rotatably connected to the first slide rod, and the sliding plate is slidably connected to the first slide rod.

[0017] As a further technical solution of the present invention, a third sliding groove is provided on both the first fixing rod and the second fixing rod, and a third sliding rod is slidably connected inside the third sliding groove. The third sliding rod is fixedly installed on the side wall of the connecting plate, and a second spring is provided on the outside of the third sliding rod.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention, through the arrangement of a first delivery component and a second delivery component, operates by rotating a rotating disk to drive the first and second fixed rods to rotate synchronously. The rotation of the first and second fixed rods drives the first and second feeding rods to rotate, which in turn drives the first and second delivery blocks to rotate. When the first and second delivery blocks rotate to the bottom of the membrane material, their top edges just contact the lower surface of the membrane material. As the first and second delivery blocks continue to rotate, they lift the membrane material upwards by a small distance, forming a localized raised area. The upward lifting action of the first and second delivery blocks applies lateral and longitudinal tension to this localized area of ​​the membrane material, instantly opening and straightening any possible minor wrinkles, forming an ideal flat detection area. This prevents wrinkles from affecting the detection results, thereby ensuring detection accuracy.

[0020] 2. The present invention, through the rotation of the first delivery block and the second delivery block, when the first slide rod slides to the top inside the first slide groove, the gear meshes with the first rack plate and rotates, thereby driving the first slide rod to rotate. The rotation of the first slide rod drives the first delivery block and the second delivery block to rotate outward, thus spreading the membrane material outward. When the first delivery block and the second delivery block are in contact with the membrane material at the same time, their rotation directions are opposite, and they spread the membrane material outward by a certain distance. This can further spread and straighten any tiny wrinkles that may exist on the surface of the membrane material, thereby improving the accuracy of detection.

[0021] 3. The present invention uses a guide plate to guide the movement of the second slide rod. When the first delivery block and the second delivery block rotate to one side of the membrane material, the second slide rod slides and contacts the guide plate. The arc-shaped guide at both ends of the guide plate causes the second slide rod to move outward, driving the connecting plate to move to one side of the membrane material. The pressure block moves to the top of one end of the first delivery block and the second delivery block. Through the coordinated pressure of the pressure block and the first and second delivery blocks on the upper and lower contact surfaces of the membrane material, micro-wrinkles can be eliminated more effectively, which can further improve the accuracy of the detection results. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 3 This is a partial cross-sectional schematic diagram of the structure at the testing station of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure at the first and second slide grooves of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the first delivery component and the second delivery component of the present invention;

[0027] Figure 6 This is a schematic cross-sectional view of the structure at the first delivery component and the second delivery component of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the second feeding rod in the first state of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the second feeding rod in the second state of the present invention;

[0030] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at point A in the middle.

[0031] In the diagram: 1. Inspection table; 2. Film material; 3. Winding assembly; 4. Inspection device; 5. Rotary disk; 7. First fixed rod; 8. First feeding rod; 9. Second fixed rod; 10. Second feeding rod; 11. First sliding rod; 12. First slide groove; 13. First delivery block; 14. Second delivery block; 15. Gear; 16. First rack plate; 17. Second rack plate; 18. Limiting slider; 19. Limiting slide groove; 22. Connecting plate; 23. Pressure block; 24. Second sliding rod; 25. Second slide groove; 26. Guide plate; 27. Connecting slide groove; 28. Slide plate; 29. ​​First spring; 30. Limiting plate; 31. Third sliding rod; 32. Third slide groove; 33. Second spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 9 As shown in the embodiment of the present invention, a testing device for the production of lightweight carbon-based lightning and electromagnetic shielding film includes a testing table 1, a winding assembly 3 for conveying film material 2, and a testing device 4 for testing film material 2.

[0034] Two rotating disks 5 are rotatably mounted on the testing table 1. The two rotating disks 5 are symmetrically arranged. Each of the two rotating disks 5 is provided with multiple first delivery components and second delivery components. The multiple first delivery components and second delivery components are arranged in a ring array at equal intervals and are alternately arranged.

[0035] Both the first delivery component and the second delivery component are elastically mounted with a connecting plate 22. A pressure block 23 is fixedly mounted on one end of the connecting plate 22. An arc-shaped protrusion is provided on the end of the pressure block 23 facing the membrane material 2.

[0036] The first delivery assembly includes a first fixed rod 7, a first feeding rod 8, and a first delivery block 13. The first fixed rod 7 is fixedly installed on the rotating disk 5, the first feeding rod 8 is slidably installed inside the first fixed rod 7, and the first delivery block 13 is installed on the top of the first feeding rod 8.

[0037] The second delivery assembly includes a second fixed rod 9, a second feeding rod 10, and a second delivery block 14. The second fixed rod 9 is fixedly mounted on the rotating disk 5, the second feeding rod 10 is slidably mounted inside the second fixed rod 9, and the second delivery block 14 is mounted on top of the second feeding rod 10.

[0038] With the arrangement of the first and second delivery components, during operation, the rotation of the rotating disk 5 drives the first fixed rod 7 and the second fixed rod 9 to rotate synchronously. The rotation of the first fixed rod 7 and the second fixed rod 9 drives the first feeding rod 8 and the second feeding rod 10 to rotate. The rotation of the first feeding rod 8 and the second feeding rod 10 drives the first delivery block 13 and the second delivery block 14 to rotate. When the first delivery block 13 and the second delivery block 14 rotate to the bottom of the membrane material 2, their tops just contact the lower surface of the membrane material 2. As the first delivery block 13 and the second delivery block 14 continue to rotate, they lift the membrane material 2 upwards by a small distance, forming a localized raised area. The upward lifting action of the first delivery block 13 and the second delivery block 14 applies a lateral (due to the synchronous lifting on both sides) and longitudinal tension to the localized area of ​​the membrane material 2, instantly opening up and straightening any possible minor wrinkles, forming an ideal flat detection area. This prevents wrinkles from affecting the detection results, thereby ensuring detection accuracy.

[0039] Furthermore, as the first delivery block 13 and the second delivery block 14 continue to rotate, they will provide the membrane material 2 with a forward auxiliary driving force through friction. This force is uniform and continuous, and works in synergy with the main conveying system to ensure that the membrane material 2 transitions smoothly at the moment of detection, effectively suppressing the shaking caused by the tension fluctuation of the main conveying system.

[0040] By periodically lifting the first delivery block 13 and the second delivery block 14, tension is actively applied to the membrane material 2 in the detection area, which can effectively eliminate micro-wrinkles and fundamentally avoid visual misjudgment and missed detection caused by wrinkle shadows and highlights, thus greatly improving the detection accuracy.

[0041] The first delivery block 13 and the second delivery block 14 are covered with protective sleeves made of flexible materials (such as silicone or polyurethane), which not only reduces the risk of scratching or puncturing the membrane material 2, but also allows for a smoother "cutting" into and "leaving" the surface of the membrane material 2, minimizing damage to the membrane material 2 and ensuring the ultimate quality of the product.

[0042] The testing station 1 is equipped with a motor that drives the rotating disk 5 to rotate, which will not be described in detail here.

[0043] like Figures 1 to 9 As shown, a first slide rod 11 is fixedly installed on both the first delivery block 13 and the second delivery block 14. The end of the first slide rod 11 away from the first delivery block 13 and the second delivery block 14 is slidably installed on the inner wall of the first slide groove 12, which is opened inside the detection table 1.

[0044] When the rotating disk 5 drives the first fixed rod 7 and the second fixed rod 9 to rotate, the first slide rod 11 slides on the inner wall of the first slide groove 12. The first slide rod 11 is guided by the first slide groove 12, causing the first feeding rod 8 and the second feeding rod 10 to slide outward on the inner wall of the first fixed rod 7 and the second fixed rod 9. This causes the first delivery block 13 and the second delivery block 14 to lift the membrane material 2 to form a local lifting area.

[0045] like Figure 3 , Figure 4 and Figure 5 As shown, a gear 15 is fixedly connected to one end of the first slide rod 11. The gear 15 is slidably installed inside the first slide groove 12. A first rack plate 16 is fixedly installed on both sides of the top of the first slide groove 12. The first rack plate 16 meshes with the gear 15.

[0046] When the first slide rod 11 slides to the top inside the first slide groove 12, the gear 15 meshes with the first rack plate 16 and rotates, thereby driving the first slide rod 11 to rotate. The rotation of the first slide rod 11 drives the first delivery block 13 and the second delivery block 14 to rotate, causing the first delivery block 13 and the second delivery block 14 to rotate outward and push the membrane material 2 outward.

[0047] like Figure 4 As shown, the two first rack plates 16 are arranged one above the other. When the first delivery block 13 and the second delivery block 14 come into contact with the membrane material 2 at the same time, they rotate in opposite directions and push the membrane material 2 outward by a small distance. This can further open up and straighten any tiny wrinkles that may exist on the surface of the membrane material 2, thereby improving the accuracy of the detection.

[0048] like Figure 8 and Figure 9As shown, the bottom ends of the first delivery block 13 and the second delivery block 14 are both fixedly connected to the limit slider 18, and the tops of the first feeding rod 8 and the second feeding rod 10 are both provided with limit grooves 19, and the limit slider 18 is slidably installed inside the limit groove 19.

[0049] like Figure 3 and Figure 4 As shown, a second rack plate 17 is provided on one side of each of the two first rack plates 16, and the second rack plates 17 are staggered vertically from the first rack plates 16.

[0050] After gear 15 meshes with the first rack plate 16 and rotates, gear 15 continues to move and meshes with the second rack plate 17 to reverse and reset.

[0051] like Figure 3 and Figure 4 As shown, a second slide rod 24 is fixedly connected to the outer wall of the connecting plate 22. The second slide rod 24 is slidably installed on the inner wall of the second slide groove 25. The second slide groove 25 is opened inside the detection table 1. A guide plate 26 is fixedly installed inside the second slide groove 25.

[0052] When the first delivery block 13 and the second delivery block 14 have not rotated to one side of the membrane material 2, the second slide bar 24 slides on the inner wall of the second slide groove 25, and the pressure block 23 is offset from one end of the first delivery block 13 and the second delivery block 14.

[0053] When the first delivery block 13 and the second delivery block 14 rotate to one side of the membrane material 2, the second slide rod 24 slides and contacts the guide plate 26. The arc-shaped guide at both ends of the guide plate 26 causes the second slide rod 24 to move outward, driving the connecting plate 22 to move to one side of the membrane material 2. The pressure block 23 moves to the top of one end of the first delivery block 13 and the second delivery block 14. Through the coordinated pressure of the pressure block 23 and the first delivery block 13 and the second delivery block 14 on the upper and lower contact surfaces of the membrane material 2, micro-wrinkles can be eliminated more effectively, which can further improve the accuracy of the detection results.

[0054] like Figure 5 and Figure 6 As shown, the inner wall of the connecting plate 22 is provided with a connecting groove 27, which is slidably connected to the first sliding rod 11.

[0055] like Figures 5 to 8 As shown, a sliding plate 28, a first spring 29 and a limiting plate 30 are installed on the outer wall of the first sliding rod 11. The limiting plate 30 is rotatably connected to the first sliding rod 11, and the sliding plate 28 is slidably connected to the first sliding rod 11.

[0056] When the second slide rod 24 slides and contacts the guide plate 26, causing the connecting plate 22 to move to one side of the membrane material 2, the connecting plate 22 causes the slide plate 28 to slide on the outer wall of the first slide rod 11, and the first spring 29 is deformed and stored by the limiting plate 30.

[0057] When the second slide bar 24 slides and separates from the guide plate 26, the elastic potential energy is released by the first spring 29 to move the slide plate 28 and the connecting plate 22 back to their original positions, thereby separating the pressure block 23 from the membrane material 2.

[0058] like Figure 7 and Figure 8 As shown, a third sliding groove 32 is provided on both the first fixed rod 7 and the second fixed rod 9. A third sliding rod 31 is slidably connected inside the third sliding groove 32. The third sliding rod 31 is fixedly installed on the side wall of the connecting plate 22. A second spring 33 is provided on the outside of the third sliding rod 31.

[0059] The bottom position of the connecting plate 22 is limited by the third slide bar 31, and at the same time, it cooperates with the first slide bar 11 to make the connecting plate 22 parallel to the first fixing bar 7 and the first feeding bar 8 or the second fixing bar 9 and the second feeding bar 10, so as to ensure the stability and reliability of the delivery of the film material 2.

[0060] Working principle and usage process:

[0061] During operation, the rotating disk 5 drives the first fixed rod 7 and the second fixed rod 9 to rotate synchronously. When the first fixed rod 7 and the second fixed rod 9 rotate, they drive the first feeding rod 8 and the second feeding rod 10 to rotate. The rotation of the first feeding rod 8 and the second feeding rod 10 drives the first delivery block 13 and the second delivery block 14 to rotate. When the first delivery block 13 and the second delivery block 14 rotate to the bottom of the membrane material 2, their tops just contact the lower surface of the membrane material 2. As the first delivery block 13 and the second delivery block 14 continue to rotate, they lift the membrane material 2 upward by a small distance, forming a local lifting area, which instantly opens up and straightens any possible small wrinkles.

[0062] When the first delivery block 13 and the second delivery block 14 rotate to one side of the membrane material 2, the second slide rod 24 slides and contacts the guide plate 26. The arc-shaped guide at both ends of the guide plate 26 causes the second slide rod 24 to move outward, driving the connecting plate 22 to move to one side of the membrane material 2. The pressure block 23 moves to the top of one end of the first delivery block 13 and the second delivery block 14. Through the coordinated pressure of the pressure block 23 and the first delivery block 13 and the second delivery block 14 on the upper and lower contact surfaces of the membrane material 2, micro-wrinkles can be eliminated more effectively.

[0063] When the first slide rod 11 slides to the top inside the first slide groove 12, the gear 15 meshes with the first rack plate 16 and rotates, thereby driving the first slide rod 11 to rotate. The rotation of the first slide rod 11 drives the first delivery block 13 and the second delivery block 14 to rotate, causing the first delivery block 13 and the second delivery block 14 to rotate outward and push the membrane material 2 outward.

[0064] When the first delivery block 13 and the second delivery block 14 come into contact with the membrane material 2 at the same time, they rotate in opposite directions and push the membrane material 2 outward a little distance. This can further open up and straighten any tiny wrinkles that may exist on the surface of the membrane material 2, thereby improving the accuracy of the detection.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for the production of lightweight carbon-based lightning and electromagnetic shielding film, comprising a testing table (1), a winding assembly (3) for conveying film material (2), and a testing device (4) for testing film material (2). Its features are: Two rotating disks (5) are rotatably mounted on the detection table (1). The two rotating disks (5) are symmetrically arranged. Each of the two rotating disks (5) is provided with multiple first delivery components and second delivery components. The multiple first delivery components and second delivery components are arranged in a ring array at equal intervals and are alternately arranged. Both the first delivery component and the second delivery component are elastically mounted with a connecting plate (22), and a pressure block (23) is fixedly mounted on one end of the connecting plate (22). The pressure block (23) has an arc protrusion on one end facing the membrane material (2). The first delivery assembly includes a first fixed rod (7), a first feeding rod (8) and a first delivery block (13). The first fixed rod (7) is fixedly installed on the rotating disk (5), the first feeding rod (8) is slidably installed inside the first fixed rod (7), and the first delivery block (13) is installed on the top of the first feeding rod (8). The second delivery assembly includes a second fixed rod (9), a second feeding rod (10), and a second delivery block (14). The second fixed rod (9) is fixedly mounted on the rotating disk (5), the second feeding rod (10) is slidably mounted inside the second fixed rod (9), and the second delivery block (14) is mounted on the top of the second feeding rod (10).

2. The testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films according to claim 1, characterized in that: A first slide rod (11) is fixedly installed on both the first delivery block (13) and the second delivery block (14). The end of the first slide rod (11) away from the first delivery block (13) and the second delivery block (14) is slidably installed on the inner wall of the first slide groove (12), which is located inside the detection table (1).

3. The testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films according to claim 2, characterized in that: A gear (15) is fixedly connected to one end of the first slide rod (11). The gear (15) is slidably installed inside the first slide groove (12). A first rack plate (16) is fixedly installed on both sides of the top of the first slide groove (12). The first rack plate (16) meshes with the gear (15).

4. The testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films according to claim 3, characterized in that: A second rack plate (17) is provided on one side of each of the two first rack plates (16), and the second rack plate (17) and the first rack plate (16) are staggered vertically.

5. The testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films according to claim 1, characterized in that: The outer wall of the connecting plate (22) is fixedly connected to a second slide rod (24), which is slidably installed on the inner wall of the second slide groove (25). The second slide groove (25) is opened inside the testing table (1), and a guide plate (26) is fixedly installed inside the second slide groove (25).

6. The testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films according to claim 1, characterized in that: The inner wall of the connecting plate (22) is provided with a connecting groove (27), which is slidably connected to the first sliding rod (11).

7. The testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films according to claim 2, characterized in that: The outer wall of the first slide bar (11) is equipped with a slide plate (28), a first spring (29) and a limiting plate (30). The limiting plate (30) is rotatably connected to the first slide bar (11), and the slide plate (28) is slidably connected to the first slide bar (11).

8. The testing device for the production of lightweight carbon-based lightning and electromagnetic shielding films according to claim 1, characterized in that: The first fixing rod (7) and the second fixing rod (9) are each provided with a third sliding groove (32). The third sliding rod (31) is slidably connected inside the third sliding groove (32). The third sliding rod (31) is fixedly installed on the side wall of the connecting plate (22). The third sliding rod (31) is provided with a second spring (33) on the outside.

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