Small-size waterproof breathable film detection device

Abstract

The utility model discloses a small-size waterproof breathable film detection device, and relates to the technical field of film detection equipment. The rack is arranged at the top of the machine table, a test seat is arranged on the front side of the top of the machine table, an air hole is formed in the top of the test seat, a first air cylinder and a second air cylinder are arranged on the rack, an air pressure pipe is arranged at the bottom of the first air cylinder, and a water injection pipe is arranged at the bottom of the second air cylinder; the inner diameter of an air outlet in the bottom of the air pressure pipe is larger than the outer diameter of the air hole, the small-caliber air hole is formed in the testing seat, the performance of the waterproof breathable film can be rapidly and conveniently detected in the mode that water drips and pressurization is conducted at the position, corresponding to the air hole, of the film, and the device is simple in structure and convenient to operate. The operation is convenient, the detection result is accurate, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a detection device for a small-volume waterproof and breathable film, and relates to the technical field of film detection equipment. Background Technique

[0002] Due to its waterproof and breathable characteristics, the waterproof and breathable film is widely used in various fields, such as the chemical field, the medical field, etc. Therefore, the waterproof and breathable performance of the waterproof and breathable film needs to be strictly controlled to ensure that the equipment cannot be used normally due to missed inspection or misinspection during use, causing adverse effects.

[0003] The patented technology with the publication number of CN116593371A discloses an inspection device for quickly detecting the breathable performance of a waterproof and breathable film, including a pneumatic pump assembly, a connecting pipe, a sealed box, a cover plate assembly, and a pressing plate locking assembly. The sealed box is provided with a test slot for placing the breathable film to be tested, and a central through hole is provided in the middle of the test slot; the cover plate assembly is hinged to the sealed box, the pressing plate locking assembly is fixed to the sealed box and is located below the test slot. The cover plate assembly is provided with a cover plate through hole, and the cover plate assembly is provided with a breathable film soft rubber pressing pad. The breathable film soft rubber pressing pad is provided with a pressing pad through hole. The breathable film to be tested is pressed by the cover plate assembly in the test slot, and the central through hole, the pressing pad through hole, and the cover plate through hole form a breathable channel. The cooperation of the pneumatic pump assembly, the connecting pipe, the sealed box, the cover plate assembly, and the pressing plate locking assembly is used for testing, which has the advantages of small volume, light weight, accurate and fast data collection for single-material detection, simple device, low cost, and strong replicability. However, the equipment in this scheme is relatively complex, and a sealed box needs to be used for cooperative detection, the operation is relatively cumbersome, and the detection speed is slow. Summary of the Invention

[0004] The purpose of the utility model is to provide a detection device for a small-volume waterproof and breathable film in view of the defects or deficiencies in the prior art. A small-diameter air hole is arranged on the test seat, and the performance of the waterproof and breathable film can be quickly and conveniently detected by dripping water and pressurizing at the corresponding air hole position of the film. The equipment has a simple structure, convenient operation, accurate test results, and greatly improves the detection efficiency.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions: It includes a machine table 1 and a frame 2. The frame 2 is arranged on the top of the machine table 1. A test seat 3 is arranged on the front side of the top of the machine table 1. An air hole 31 is arranged on the top of the test seat 3. A first cylinder 4 and a second cylinder 5 are arranged on the frame 2. An air pressure pipe 6 is arranged at the bottom of the first cylinder 4, and a water injection pipe 7 is arranged at the bottom of the second cylinder 5. The central axes of the air pressure pipe 6 and the water injection pipe 7 are in the same vertical plane as the central axis of the air hole 31, and the inner diameter of the air outlet at the bottom of the air pressure pipe 6 is larger than the outer diameter of the air hole 31.

[0006] Further, the air pressure pipe 6 is connected to an external air pump, and the water injection pipe 7 is connected to a water pump.

[0007] Further, the first cylinder 4 and the second cylinder 5 are installed on the same connecting plate. A sliding groove is provided on the back of the connecting plate and is movably connected to a sliding rail provided on the frame 2.

[0008] Further, a stroke cylinder 8 is provided on the frame 2, and the piston rod of the stroke cylinder 8 is connected to the first cylinder 4.

[0009] Further, a water storage tank 11 is provided at the rear side of the top of the machine table 1, and the water storage tank 11 is connected to the water injection pipe 7 through a water pump.

[0010] Further, a water inlet pipe 10 is provided at the top of the water storage tank 11. A water inlet valve 12 is provided at the bottom of the water inlet pipe 10 and is connected to the water storage tank 11. A drain valve 13 is provided at the bottom of the water storage tank 11.

[0011] Further, a pneumatic valve 9 is provided on the side of the water storage tank 11, and the pneumatic valve 9 is communicated with the air pressure pipe 6.

[0012] Further, a first start switch 14, a second start switch 15, and a stop switch 16 are further provided on the machine table 1. The first start switch 14 controls the first cylinder 4, the second cylinder 5, and the stroke cylinder 8, and the second start switch 15 controls the air pump and the water pump.

[0013] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: A small-diameter air hole is provided on the test seat, and the performance of the waterproof and breathable film can be quickly and conveniently detected by dripping water and pressurizing at the corresponding position of the air hole on the film. The equipment has a simple structure, is easy to operate, and the test results are accurate, greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 a second-angle view of

[0017] Figure 3 is Figure 1 a third-angle view of

[0018] Figure 4 It is a schematic structural diagram of the test base 3 in the present utility model.

[0019] Explanation of reference numerals: machine table 1, frame 2, test base 3, first cylinder 4, second cylinder 5, pneumatic tube 6, water injection pipe 7, stroke cylinder 8, pneumatic valve 9, water inlet pipe 10, water storage tank 11, water inlet valve 12, drain valve 13, first start switch 14, second start switch 15, stop switch 16. Specific embodiments

[0020] Refer to Figures 1 - 4 As shown, the technical solution adopted in this specific embodiment is: It includes a machine table 1 and a frame 2. The frame 2 is arranged on the top of the machine table 1. A test base 3 is arranged on the front side of the top of the machine table 1. An air hole 31 is arranged on the top of the test base 3. A first cylinder 4 and a second cylinder 5 are arranged on the frame 2. A pneumatic tube 6 is arranged at the bottom of the first cylinder 4. A water injection pipe 7 is arranged at the bottom of the second cylinder 5. The central axes of the pneumatic tube 6 and the water injection pipe 7 are in the same vertical plane as the central axis of the air hole 31, and the inner diameter of the air outlet at the bottom of the pneumatic tube 6 is larger than the outer diameter of the air hole 31. Existing test devices usually detect the film through a sealed box, with a relatively complex overall structure and a slow detection speed. In this embodiment, an open test base is set, and different fixing grooves are arranged on the test base. According to the specifications of the film, the film can be tightly fixed by different fixing blocks. During the test, the water injection pipe is pushed downward by the second cylinder to approach the film, and water is injected so that the water droplets completely cover the air hole. Then, the first cylinder is controlled to move above the air hole and push the pneumatic tube downward, making the air outlet at the bottom of the pneumatic tube closely adhere to the film, and the water droplets fill the air outlet. At this time, air is introduced to pressurize. If the film is qualified for waterproofing, the gas cannot pass through the air hole, and the air pressure in the pneumatic tube remains unchanged. If the waterproofing is unqualified and liquid penetrates through the air hole, the air pressure in the pneumatic tube becomes smaller. After the waterproof performance test is completed, air is pumped out to decompress. At this time, the water droplets are sucked up, and external air enters the pneumatic tube through the air hole, and the air pressure changes again. By comparing the change value of the air pressure with the air permeability parameter of the film, it can be determined whether the air permeability performance of the film meets the requirements. The waterproof and air permeability performance of the film is detected by the method of water injection without plugging in cooperation with the methods of pressurization and air extraction and decompression. The overall structure of the equipment is simple, the operation is convenient, and the detection operation can be carried out more quickly and effectively.

[0021] More specifically, the pneumatic tube 6 is connected to an external air pump, and the water injection pipe 7 is connected to a water pump. In this embodiment, an external air pump and a water pump are provided. The air pump is used for inflating and pressurizing as well as air extraction and decompression, and the water pump is used for water injection operation.

[0022] More specifically, the first cylinder 4 and the second cylinder 5 are installed on the same connecting plate. A sliding groove is provided on the back of the connecting plate and is movably connected to the sliding rail provided on the frame 2. The first cylinder and the second cylinder move synchronously in the horizontal direction, facilitating the alternate operations of water injection, inflation, and air extraction.

[0023] More specifically, a stroke cylinder 8 is provided on the frame 2. The piston rod of the stroke cylinder 8 is connected to the first cylinder 4. The two cylinders are driven by the stroke cylinder to move horizontally, realizing the operations of water injection, inflation, and air extraction.

[0024] More specifically, a water storage tank 11 is provided at the rear side of the top of the machine table 1. The water storage tank 11 is connected to the water injection pipe 7 through a water pump. An inlet pipe 10 is provided at the top of the water storage tank 11. A water inlet valve 12 is provided at the bottom of the inlet pipe 10 and is connected to the water storage tank 11. A drain valve 13 is provided at the bottom of the water storage tank 11. It can be understood that a water volume detection device is provided on the water storage tank to observe the water storage situation in the water storage tank. When the water volume is insufficient, water is replenished through the inlet pipe. After using for a period of time, the water body can be replaced by draining water through the drain valve.

[0025] More specifically, a pressure valve 9 is provided on the side of the water storage tank 11. The pressure valve 9 is communicated with the pressure pipe 6. The pressure valve monitors the air pressure in the pressure pipe. When the inflation increases to the set value, the pressurization is stopped. When the waterproof performance of the film is qualified, the air pressure in the pressure pipe should be in a constant state. If the air pressure decreases, it indicates that the waterproof performance is unqualified and there is water seeping out from the pores. If the air pressure remains unchanged, it indicates that the film waterproof performance is qualified. After the waterproof performance test is completed, the air permeability test is carried out. The air pump extracts air to reduce the pressure. Under the action of the air pressure, the water droplets covering the pore position are sucked up, releasing the seal of the pores. At this time, external air can enter the pressure pipe through the film, and the air pressure in the pressure pipe changes. According to the air permeability of the film and the situation of the air pressure change, it can be calculated whether the air permeability meets the standard. Through the detection method of this embodiment, the waterproof and air permeability performance of the film can be detected more quickly and effectively, and it is more convenient to use.

[0026] More specifically, a first start switch 14, a second start switch 15, and a stop switch 16 are further provided on the machine table 1. The first start switch 14 controls the first cylinder 4, the second cylinder 5, and the stroke cylinder 8. The second start switch 15 controls the air pump and the water pump. In this embodiment, the two start switches mainly control the power-on, and the stop switch mainly functions to reset the equipment. It can be understood that an external controller is also provided to control the cylinders, the air pump, and the water pump. When the first start switch is pressed, all the cylinders are powered on, and the external controller can operate all the cylinders. After the second start switch is pressed, the air pump and the water pump can be controlled. When the stop switch is pressed after a detection is completed, all the equipment is reset. The sub-switch control can prevent misoperation during the initial operation.

[0027] The working principle of the present utility model: When starting the detection, place the film on the test seat 3 and fix the film through the fixing block. The film needs to cover the air holes 31 on the test seat 3. Press the first start switch 14, and the indicator light inside it flashes once. The external controller controls the start of the stroke cylinder 8, driving the first and second cylinders to move, so that the second cylinder moves above the air hole 31. Then control the start of the first cylinder 5 to push the water injection pipe 7 downward to be close to the film. Press the second start switch 15, and control the water pump to inject water through the external controller to ensure that the water droplets completely cover the air hole 31. Control the second cylinder 5 to drive the water injection pipe 7 to retract, and again control the stroke cylinder 8 to drive the first and second cylinders to move, so that the first cylinder 4 moves above the air hole 31. Control the first cylinder 4 to drive the air pressure pipe 6 downward and make the air outlet fit with the film, and the water droplets completely cover the air outlet. At this time, control the air pump to inflate and pressurize, and observe the value of the pressure valve 9. Stop pressurizing after the pressure is increased to the set value. If the force value of the pressure valve does not change, it means that the film does not show water seepage. Otherwise, the film shows water seepage. Then control the air pump to exhaust air. At this time, under the action of pressure, the water droplets are sucked up and separated from the film, and the air hole 31 starts to intake air. The air permeability of the film can be calculated according to the change of the value of the pressure valve 9. When all the tests are completed, press the stop switch 16, and all the cylinders are reset, and the film is replaced for the next round of detection.

[0028] The above is only used to illustrate the technical solution of the present utility model and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model should be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.

Claims

1. A small-volume waterproof breathable membrane detection device, comprising a machine platform (1) and a frame (2), wherein the frame (2) is arranged on the top of the machine platform (1), and is characterized in that: A test seat (3) is arranged at the front side of the top of the machine (1), an air hole (31) is arranged at the top of the test seat (3), a first cylinder (4) and a second cylinder (5) are arranged on the frame (2), an air pressure pipe (6) is arranged at the bottom of the first cylinder (4), a water injection pipe (7) is arranged at the bottom of the second cylinder (5), the central axis of the air pressure pipe (6) and the water injection pipe (7) is in the same vertical plane as the central axis of the air hole (31), and the inner diameter of the air outlet at the bottom of the air pressure pipe (6) is larger than the outer diameter of the air hole (31).

2. A small-volume waterproof breathable membrane detection device according to claim 1, characterized in that: The air pressure pipe (6) is connected to an external air pump, and the water injection pipe (7) is connected to a water pump.

3. A small-volume waterproof breathable membrane detection device according to claim 1, characterized in that: The first cylinder (4) and the second cylinder (5) are mounted on the same connecting plate, and a slide groove is arranged on the back of the connecting plate and is movably connected to a slide rail arranged on the frame (2).

4. A small-volume waterproof breathable membrane detection device according to claim 1, characterized in that: A stroke cylinder (8) is arranged on the frame (2), and a piston rod of the stroke cylinder (8) is connected to the first cylinder (4).

5. A small-volume waterproof breathable membrane detection device according to claim 1, characterized in that: A water storage tank (11) is arranged on the rear side of the top of the machine (1), and the water storage tank (11) is connected to the water injection pipe (7) through a water pump.

6. A small-volume waterproof breathable membrane detection device according to claim 5, characterized in that: The water storage tank (11) is provided with a water inlet pipe (10) at the top, a water inlet valve (12) connected to the water storage tank (11) is provided at the bottom of the water inlet pipe (10), and a water discharge valve (13) is provided at the bottom of the water storage tank (11).

7. A small-volume waterproof breathable membrane detection device according to claim 5, characterized in that: The side of the water storage tank (11) is provided with an air pressure valve (9), and the air pressure valve (9) is connected to the air pressure pipe (6).

8. A small-volume waterproof breathable membrane detection device according to claim 1, characterized in that: The machine (1) is also provided with a first start switch (14), a second start switch (15) and a stop switch (16); the first start switch (14) controls the first cylinder (4), the second cylinder (5) and the stroke cylinder (8); and the second start switch (15) controls the air pump and the water pump.

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