Water-resistance and air-permeability detection fast clamp for air permeable membrane

Abstract

The utility model relates to optical film technical field discloses a kind of water resistance gas film air permeability detection quick fixture, including L type board, the right side middle part of L type board is fixedly connected with vacuum pump, the right side of vacuum pump is connected with U type pipe, the top of U type pipe is fixedly connected with valve one, the right side top of U type pipe is connected with detection cylinder one, the outer wall of detection cylinder one is slidably connected with sliding cylinder, the bottom of sliding cylinder is fixedly connected with sealing washer, the bottom of U type pipe is fixedly connected with valve two, the right side bottom of U type pipe is connected with detection cylinder two.In the utility model, opening valve one and valve two, vacuum treatment is carried out by vacuum pump, stable pressure difference is formed, then closing valve two by air pump to the inside of detection cylinder two with the inert gas of color is rushed, thus can directly reflect the real air permeability of optical film, improve the reliability of detection result.

Description

Technical Field

[0001] This utility model relates to the field of optical film technology, and in particular to a rapid fixture for testing the permeability of water-resistant gas membranes. Background Technology

[0002] In today's era of rapid technological advancement, optical films, as a crucial optical material, are widely used in liquid crystal displays, organic light-emitting diodes (OLEDs), optical lenses, and solar photovoltaics. With the continuous expansion of optical film applications and increasingly stringent technical requirements, accurate testing of their air permeability has become a critical step in ensuring product quality. Air permeability testing of optical films demands extremely high sealing performance; even minute gas leaks can lead to data deviations. Traditional fixtures often lack adequate sealing structures, failing to effectively isolate external gas interference and further reducing the reliability of test results. Against this backdrop, the development of a rapid air permeability testing fixture capable of quickly, accurately, and non-destructively fixing optical films while possessing excellent sealing performance is urgently needed. This will not only improve the efficiency and quality of optical film testing but also significantly contribute to the high-quality development of the optical film industry.

[0003] A search revealed Chinese Patent Publication No. CN208653767U, which discloses an online testing station for optical films, relating to the field of optical films. The station includes a support plate, an anti-slip mat, a storage box, a blower mechanism, a testing chamber, and an air outlet mechanism. The support plate has an anti-slip mat at its bottom and a horizontal plate at its top. Storage boxes are located on both sides of the upper surface. Each storage box has a second door at its front and a blower mechanism at its top. The testing chamber is located to the right of the blower mechanism, and the air outlet mechanism is located to the right of the testing chamber. Anti-slip mats make the testing platform more stable and increase friction between the platform and the ground. Storage boxes can store testing documents, tools, and materials. The testing platform can be kept level by controlling the lifting and lowering of the hydraulic column. The blower mechanism can remove dust and purify the air entering the testing chamber. However, it is difficult to form a stable and accurate pressure difference in the air permeability test of optical films, which affects the process of gas passing through the optical film, making the results less intuitive and inaccurate. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a rapid fixture for testing the permeability of water-resistant gas membranes, aiming to improve the problem in the prior art that it is difficult to form a stable and accurate pressure difference in the test of the permeability of optical membranes, which affects the process of gas passing through the optical membrane and leads to inaccurate test results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rapid fixture for testing the permeability of water-resistant air films, comprising an L-shaped plate, a vacuum pump fixedly connected to the middle right side of the L-shaped plate, a U-shaped tube connected to the right side of the vacuum pump, a valve one fixedly connected to the top of the U-shaped tube, a test cylinder one connected to the top right side of the U-shaped tube, a sliding cylinder slidably connected to the outer wall of the test cylinder one, a sealing gasket fixedly connected to the bottom of the sliding cylinder, a valve two fixedly connected to the bottom of the U-shaped tube, a test cylinder two connected to the bottom right side of the U-shaped tube, an observation port fixedly connected to the front side of the test cylinder two, a connecting pipe connected to the rear side of the test cylinder two, an air pump connected to the rear side of the connecting pipe, and a fixing mechanism provided on the top of the L-shaped plate for fixing optical films of different sizes.

[0006] Furthermore, the fixing mechanism includes two support frames, the bottom of which is fixedly connected to the top right side of the L-shaped plate. A support plate is fixedly connected to the top of each support frame. Two U-shaped clamps are slidably connected to the top of each support plate. Threaded sleeves are fixedly connected to the front side of each U-shaped clamp. A threaded rod is rotatably connected to the top front end of the right side of each support frame. Short rods are slidably connected to the rear side of each U-shaped clamp. Multiple holes are opened on the top of each short rod. A positioning pin is slidably connected to the top rear side of each U-shaped clamp. The bottom of the positioning pin engages with the inner wall of the corresponding hole.

[0007] Furthermore, an anti-slip pad is fixedly connected to the bottom of the L-shaped plate, and a sealing sleeve is fixedly connected to the top of the sliding cylinder.

[0008] Furthermore, a handle is fixedly connected to the right side of the sliding cylinder, and an anti-slip sleeve is fixedly connected to the outer wall of the handle.

[0009] Furthermore, a positioning post is slidably connected to the top of the handle, and a limit sleeve is fixedly connected to the outer wall of the positioning post.

[0010] Furthermore, a fixing block is fixedly connected to the right side of the detection cylinder, and a positioning hole is provided on the right side of the fixing block.

[0011] Furthermore, a knob is fixedly connected to the right end of the threaded rod, and a limit sleeve is fixedly connected to the outer wall of the positioning pin.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, valve one and valve two are opened, and vacuum treatment is performed by a vacuum pump to ensure that the initial conditions for detection are consistent and a stable pressure difference is formed, making the process of gas passing through the optical film more stable and controllable. Then, valve two is closed and colored inert gas is injected into the detection cylinder two by an air pump. The resulting pressure difference is not easy to react chemically with the optical film, which can intuitively reflect the true air permeability of the optical film and improve the reliability of the detection results.

[0014] 2. In this utility model, after the optical film is placed on the top of the support plate, due to the different internal threads of the threaded sleeves on the front side of the U-shaped clamp, rotating the threaded rod will cause the U-shaped clamp to move towards each other, achieving a clamping effect. At the same time, the sliding short rod can be used to strengthen the fixation, and the sliding positioning pin can be engaged with the inner wall of the corresponding hole to achieve a fixing effect. This double fixation can effectively resist external interference and ensure that the optical film always maintains a stable fixed state. Attached Figure Description

[0015] Figure 1 This is a perspective view of the front side of the L-shaped plate of a rapid fixture for testing the permeability of a water-resistant air membrane proposed in this utility model.

[0016] Figure 2 This is a two-side view of the testing cylinder of a rapid fixture for testing the permeability of a water-resistant gas membrane proposed in this utility model;

[0017] Figure 3 This is an exploded view of the test cylinder of a rapid fixture for testing the permeability of a water-resistant gas membrane proposed in this utility model.

[0018] Figure 4 This is a diagram showing the support plate of a rapid fixture for testing the permeability of a water-resistant air membrane, as proposed in this utility model.

[0019] Figure 5 This is a disassembled view of the positioning pin of a rapid fixture for testing the permeability of a water-resistant air membrane proposed in this utility model.

[0020] Legend:

[0021] 1. L-shaped plate; 2. Fixing mechanism; 201. Support frame; 202. Support plate; 203. U-shaped clamp; 204. Threaded sleeve; 205. Threaded rod; 206. Short rod; 207. Hole; 208. Positioning pin; 3. Vacuum pump; 4. U-shaped tube; 5. Valve 1; 6. Detection cylinder 1; 7. Sliding cylinder; 8. Sealing gasket; 9. Valve 2; 10. Detection cylinder 2; 11. Observation port; 12. Connecting pipe; 13. Air pump; 14. Anti-slip pad; 15. Sealing sleeve; 16. Handle; 17. Anti-slip sleeve; 18. Positioning post; 19. Limiting sleeve 1; 20. Fixing block; 21. Positioning hole; 23. Knob; 24. Limiting sleeve 2. Detailed Implementation

[0022] 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.

[0023] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 This embodiment exemplarily demonstrates a rapid fixture for testing the permeability of water-resistant air-membrane, including an L-shaped plate 1. A vacuum pump 3 is fixedly connected to the middle right side of the L-shaped plate 1. A U-shaped tube 4 is connected to the right side of the vacuum pump 3. A valve 5 is fixedly connected to the top of the U-shaped tube 4. A detection cylinder 6 is connected to the top right side of the U-shaped tube 4. A sliding cylinder 7 is slidably connected to the outer wall of the detection cylinder 6. A sealing gasket 8 is fixedly connected to the bottom of the sliding cylinder 7. A valve 9 is fixedly connected to the bottom of the U-shaped tube 4. A detection cylinder 10 is connected to the bottom right side of the U-shaped tube 4. An observation port 11 is fixedly connected to the front side of the detection cylinder 10. A connecting pipe 12 is connected to the rear side of the detection cylinder 10. An air pump 13 is connected to the rear side of the connecting pipe 12. A fixing mechanism 2 is provided on the top of the L-shaped plate 1. The fixing mechanism 2 is used to fix optical films of different sizes.

[0024] Specifically, the L-shaped plate 1 serves as the main structure, with a vacuum pump 3 fixedly connected to its right middle section. The vacuum pump 3 can create a negative pressure environment through the U-shaped tube 4. Valve 5 controls the flow of gas to ensure the accuracy of the test. Detection cylinder 6 creates a vacuum environment to achieve the test effect. The sliding cylinder 7 can achieve a sealing effect with the fixed optical film to adapt to water-resistant gas film materials of different thicknesses and sizes. The sealing gasket 8 provides a good sealing effect to ensure airtightness during the test. Valve 9 also has the ability to control the flow of gas and works in conjunction with detection cylinder 10, which is connected to the bottom right side of the U-shaped tube 4, to further improve the accuracy of the test. An observation port 11 is fixedly connected to the front of detection cylinder 10. This observation port 11 allows for direct observation of changes during the test, increasing the intuitiveness and convenience of operation.

[0025] Please see the appendix Figure 2 Appendix Figure 4 and attached Figure 5The fixing mechanism 2 includes two support frames 201. The bottom of each support frame 201 is fixedly connected to the top right side of the L-shaped plate 1. The top of each support frame 201 is fixedly connected to a support plate 202. The top of each support plate 202 is slidably connected to two U-shaped clamps 203. The front side of each U-shaped clamp 203 is fixedly connected to a threaded sleeve 204. The front end of the top right side of the support frame 201 is rotatably connected to a threaded rod 205. The rear side of each U-shaped clamp 203 is slidably connected to a short rod 206. The top of each short rod 206 is provided with multiple holes 207. The rear side of the top of each U-shaped clamp 203 is slidably connected to a positioning pin 208. The bottom of the positioning pin 208 engages with the inner wall of the corresponding hole 207.

[0026] Specifically, the bottom of the support frame 201 is fixedly connected to the top right side of the L-shaped plate 1, ensuring the stability of the entire structure. The support plate 202 not only provides additional support points, but also increases the adaptability of the mechanism through two U-shaped clamps 203 slidably connected to its top. The front part of the U-shaped clamps 203 is fixedly installed with threaded sleeves 204, which make the entire mechanism easy to adjust and fix during use. The top rear side of the U-shaped clamps 203 is also slidably connected with positioning pins 208. The bottom of these positioning pins 208 can be precisely engaged with the inner wall of the corresponding hole 207, ensuring the stability of the component.

[0027] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 5 A handle 16 is fixedly connected to the right side of the sliding cylinder 7. An anti-slip sleeve 17 is fixedly connected to the outer wall of the handle 16. A knob 23 is fixedly connected to the right end of the threaded rod 205. A limit sleeve 24 is fixedly connected to the outer wall of the positioning pin 208. A positioning post 18 is slidably connected to the top of the handle 16. A limit sleeve 19 is fixedly connected to the outer wall of the positioning post 18.

[0028] Specifically, the handle 16 facilitates the use of the sliding cylinder 7, and the outer wall of the handle 16 is fixedly connected with an anti-slip sleeve 17, which provides a stable grip and ensures stability during use. The knob 23 facilitates the adjustment of the threaded rod 205, and the limiting sleeve 24 can effectively prevent it from moving excessively, thereby preventing it from falling off.

[0029] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 5 A fixing block 20 is fixedly connected to the right side of the detection cylinder 6. A positioning hole 21 is opened on the right side of the fixing block 20. An anti-slip pad 14 is fixedly connected to the bottom of the L-shaped plate 1. A sealing sleeve 15 is fixedly connected to the top of the sliding cylinder 7. A controller 22 is fixedly connected to the rear right side of the L-shaped plate 1. The controller 22 is electrically connected to the vacuum pump 3 and the air pump 13 respectively.

[0030] Specifically, the right side of the fixing block 20 is provided with a positioning hole 21 to ensure the stability and accuracy of the equipment. The anti-slip pad 14 can effectively prevent the equipment from sliding during use, ensuring the safety of use. The sealing sleeve 15 can effectively prevent dust and impurities from entering the equipment and ensure the sealing effect.

[0031] Working principle: After the optical film is fixed, valve 5 and valve 9 are opened. Vacuum pump 3 simultaneously vacuums the inside of detection cylinder 6 and detection cylinder 10 to ensure consistent initial detection conditions and form a stable pressure difference. This makes the process of gas passing through the optical film more stable and controllable. Then, valve 9 is closed and air pump 13 injects colored inert gas into the inside of detection cylinder 10. The resulting pressure difference is unlikely to cause a chemical reaction with the optical film, ensuring that the detection process is only affected by the air permeability of the film. When the color inside detection cylinder 10 becomes lighter, it indicates good air permeability; if the color remains unchanged, it indicates poor air permeability. This can directly reflect the true air permeability of the optical film and improve the reliability of the detection results.

[0032] After the optical film is placed on top of the support plate 202, the threaded sleeve 204 on the front side of the U-shaped clamp 203 has different internal threads. Rotating the threaded rod 205 will cause the U-shaped clamp 203 to move towards each other, achieving a clamping effect. At the same time, the sliding short rod 206 can be slidable to strengthen the fixation, and the sliding positioning pin 208 can be engaged with the inner wall of the corresponding hole 207 to achieve a fixing effect. This double fixation can effectively resist external interference and ensure that the optical film always maintains a stable fixed state.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water-resistive air barrier film air permeability detection fast clamp, comprising an L-shaped plate (1), characterized in that: A vacuum pump (3) is fixedly connected to the middle right side of the L-shaped plate (1). A U-shaped tube (4) is connected to the right side of the vacuum pump (3). A valve (5) is fixedly connected to the top of the U-shaped tube (4). A detection cylinder (6) is connected to the top right side of the U-shaped tube (4). A sliding cylinder (7) is slidably connected to the outer wall of the detection cylinder (6). A sealing gasket (8) is fixedly connected to the bottom of the sliding cylinder (7). A valve (9) is fixedly connected to the bottom of the U-shaped tube (4). A detection cylinder (10) is connected to the bottom right side of the U-shaped tube (4). An observation port (11) is fixedly connected to the front side of the detection cylinder (10). A connecting pipe (12) is connected to the rear side of the detection cylinder (10). An air pump (13) is connected to the rear side of the connecting pipe (12). A fixing mechanism (2) is provided on the top of the L-shaped plate (1). The fixing mechanism (2) is used to fix optical films of different sizes.

2. The rapid fixture for testing the permeability of a water-resistant gas membrane according to claim 1, characterized in that: The fixing mechanism (2) includes two support frames (201). The bottom of each support frame (201) is fixedly connected to the top right side of the L-shaped plate (1). A support plate (202) is fixedly connected to the top of each support frame (201). Two U-shaped clamps (203) are slidably connected to the top of each support plate (202). Threaded sleeves (204) are fixedly connected to the front side of each U-shaped clamp (203). A threaded rod (205) is rotatably connected to the top front end of the right side of the support frame (201). A short rod (206) is slidably connected to the rear side of each U-shaped clamp (203). Multiple holes (207) are opened on the top of each short rod (206). A positioning pin (208) is slidably connected to the rear side of the top of each U-shaped clamp (203). The bottom of the positioning pin (208) engages with the inner wall of the corresponding hole (207).

3. The rapid fixture for testing the permeability of a water-resistant gas membrane according to claim 1, characterized in that: The bottom of the L-shaped plate (1) is fixedly connected to an anti-slip pad (14), and the top of the sliding cylinder (7) is fixedly connected to a sealing sleeve (15).

4. The rapid fixture for testing the permeability of a water-resistant gas membrane according to claim 1, characterized in that: A handle (16) is fixedly connected to the right side of the sliding cylinder (7), and an anti-slip sleeve (17) is fixedly connected to the outer wall of the handle (16).

5. A rapid fixture for testing the permeability of a water-resistant gas membrane according to claim 4, characterized in that: The top of the handle (16) is slidably connected to a positioning post (18), and the outer wall of the positioning post (18) is fixedly connected to a limit sleeve (19).

6. The rapid fixture for testing the permeability of a water-resistant gas membrane according to claim 1, characterized in that: A fixing block (20) is fixedly connected to the right side of the detection cylinder (6), and a positioning hole (21) is provided on the right side of the fixing block (20).

7. A rapid fixture for testing the permeability of a water-resistant gas membrane according to claim 2, characterized in that: A knob (23) is fixedly connected to the right end of the threaded rod (205), and a limit sleeve (24) is fixedly connected to the outer wall of the positioning pin (208).

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