Method for detecting air permeability of textile

Abstract

A textile air permeability detection method belongs to the technical field of textile performance detection. The textile stretching device comprises clamping installation, stretching smoothing and detection completion, firstly, a buffer clamping mechanism is used for clamping a textile, a hydraulic cylinder drives a connecting frame to move downwards, the textile is stretched to be in a straight state in cooperation with rotation of a gear ring, meanwhile, a first air duct moves downwards to fix the textile, and in the stretching process, if tension is too large, a spring mechanism plays a role, and the textile is stretched to be smooth. Then, a fan is started, ventilation detection is carried out on the side face of the textile through a second air duct, airflow pushes a sliding ring to ascend and drives a ruler plate to slide upwards, and finally, an operator accurately judges the ventilation performance of the textile according to the distance that scales on the side wall of the ruler plate protrude out of the top of the first air duct. The whole process is high in automation degree, and the accuracy and reliability of a detection result are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of textile performance testing, and in particular to a method for testing the air permeability of textiles. Background Art

[0002] Textiles are products made from processed textile fibers, and are divided into two categories: woven fabrics and woven fabrics. In order to increase the sales of textiles, it is necessary to continuously improve the quality of textiles. In order to judge the quality of textiles, it is necessary to test the air permeability of textiles. The air permeability of textiles refers to the performance of gas molecules passing through textiles. It is the most basic performance of textile permeability, which mainly affects the wearing comfort of textiles, such as heat insulation, warmth, permeability, and coolness, as well as the performance of textiles, such as parachutes, airbags, sails, hot air balloons, etc. The test can objectively evaluate the air permeability of textiles and provide a basis for the design and selection of fabrics. Secondly, the test results can guide the production and processing of textiles and improve the air permeability of textiles.

[0003] However, in the prior art, when testing textiles, it is necessary to first press and fix the textiles, but during the installation process of the textiles, there is no function to stretch the textiles, which may cause wrinkles on the textiles, thereby affecting the subsequent breathability performance test results. If the textiles are manually stretched and smoothed during installation, it is easy for the operator to be accidentally injured by the device during the process. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that wrinkles may appear on textiles during the detection process in the prior art, and to propose a method for detecting the air permeability of textiles.

[0005] In order to achieve the above object, the present invention adopts the following method for testing the air permeability of textiles, comprising the following steps: Clamping installation: The buffer clamping mechanism clamps the textile and covers the top of the second air duct, then drives the hydraulic cylinder to move the connecting frame downward, drives the gear ring to rotate, so that multiple buffer clamping mechanisms stretch the textile until it is straightened, and at the same time, the first air duct moves downward, so that the sliding ring engages with the second air duct, and the textile is pressed at the interface, completing the detection and installation work; Stretching and smoothing: During the installation of textiles, if the pulling force is too large, the clamping top plate and the clamping bottom plate will drive the second sliding block to slide along the second sliding groove, so that the limit rod ensures stable sliding, thereby compressing the spring to prevent the textile from being overstretched and affecting the breathability test results. After that, the elastic force of the spring keeps the textile in a stretched and smoothed state to ensure the accuracy of the test; The test is completed: the air permeability of the textile side is tested by driving the fan to blow the set air volume through the second air duct. The air then flows into the first air duct and impacts the sliding ring, causing the ruler plate to slide up along the first air duct. The ruler plate will then protrude from the top of the first air duct. The operator judges the air permeability of the textile based on the protruding distance of the ruler plate side wall scale.

[0006] The present application also provides a textile air permeability testing device, comprising a base, wherein two fixing frames are fixedly connected to the top of the base, a stretching mechanism is arranged between the two fixing frames, a sliding rod is fixedly connected to the top of the fixing frame, and a sliding sleeve is slidably connected to the outer wall of the sliding rod, and a connecting frame is fixedly connected to the outer wall of the sliding sleeve; The stretching mechanism includes a first sliding block, which can automatically stretch and smooth the textile during the detection work; A buffer clamping mechanism is arranged inside the first sliding block so as to buffer the tensile force exerted on the textile during the process of clamping the textile.

[0007] Furthermore, a connecting shell is fixedly connected between the two fixing frames, and a first sliding groove is opened through the top of the connecting shell, a first sliding block is slidably connected to the inner wall of the first sliding groove, and a second tooth groove is opened at the bottom of the first sliding block, a gear ring is rotatably connected to the inner wall of the connecting shell, and a flat thread is opened on the top of the gear ring, a second sliding groove is opened on the top of the first sliding block, a rotating rod is rotatably connected to the inside of the connecting shell, and one end of the rotating rod is fixedly connected to the first gear, and the end of the rotating rod away from the first gear is fixedly connected to the second gear.

[0008] Furthermore, the inner wall of the second tooth groove is matched and meshed with the inner wall of the planar thread, and the inner wall of the gear teeth of the first gear is matched and meshed with the inner wall of the gear ring of the gear ring.

[0009] Furthermore, a connecting plate is fixedly connected to the side wall of the connecting frame, and a first tooth groove is formed on the side wall of the connecting plate, and an inner wall of the first tooth groove matches and meshes with an inner wall of a gear tooth of the second gear.

[0010] Further, the buffer clamping mechanism includes a limit rod, and the outer wall of the limit rod is slidably connected to the second sliding block, the side wall of the second sliding block is fixedly connected to a spring, the top of the second sliding block is fixedly connected to a connecting rod, and the end of the connecting rod away from the second sliding block is fixedly connected to a clamping frame, the side wall of the clamping frame is fixedly connected to a clamping bottom plate, and the inside of the clamping frame is threadedly connected to a screw, the bottom of the screw is rotatably connected to a clamping top plate, and the end of the screw away from the clamping top plate is fixedly connected to a knob.

[0011] Furthermore, both ends of the limit rod are fixedly connected to the inner wall of the second slide groove, the end of the spring away from the second sliding block is fixedly connected to the inner wall of the second slide groove, the outer wall of the second sliding block is slidably connected to the inner wall of the spring, and the side wall of the clamping top plate is slidably connected to the side wall of the clamping frame.

[0012] Furthermore, the interior of the connecting frame is fixedly connected with a first air duct, and the inner wall of the first air duct is slidably connected with a sliding ring, the top of the sliding ring is fixedly connected with a ruler plate, and the outer wall of the ruler plate slides through the interior of the first air duct, the top of the ruler plate is fixedly connected with a limit block, and the side wall of the ruler plate is provided with a scale.

[0013] Furthermore, a mounting frame is fixedly connected to the top of the slide rod, and a hydraulic cylinder is fixedly installed inside the mounting frame, and an output shaft of the hydraulic cylinder is fixedly connected to the top of the connecting frame.

[0014] Furthermore, a fan is fixedly installed on the top of the base, and a second air duct is fixedly connected to the output end of the fan, the outer wall of the second air duct passes through and is fixedly connected to the interior of the connecting shell, and the end of the second air duct away from the fan corresponds to the bottom of the first air duct.

[0015] Compared with the prior art, the above solution has the following beneficial effects: 1. When installing the textile, the multiple second tooth grooves move away from each other, driving the corresponding multiple buffer clamping mechanisms to stretch the textile, so as to prevent the surface of the textile from being straightened and flattened. When the connecting frame moves downward, the first air duct is also driven to move downward, and then the bottom of the sliding ring is engaged with the top of the second air duct. At the same time, the textile is pressed at the interface of the second air duct of the sliding ring, thereby completing the installation work of the textile for testing, ensuring that the textile will not be wrinkled during the installation process, thereby affecting the subsequent air permeability performance testing work, and improving the stability of the testing work.

[0016] 2. When installing textiles, the first sliding block drives the buffer clamping mechanism to stretch and smooth the textiles. If the tension on the textiles is too large, the second sliding block will be driven to slide along the outer wall of the second slide groove through the clamping top plate and the clamping bottom plate. By setting a limit rod, it can be ensured that the second sliding block is more stable during the sliding process. The spring is compressed during the process. The elastic force generated by the compression of the spring can keep the textiles in a stretched and smoothed state at all times. In the process of the spring being compressed, it can be prevented that the textiles are not subjected to excessive stretching during the installation process, thereby affecting the results of the breathability performance test.

[0017] 3. When testing the air permeability of textiles, the fan is driven to output, and then the fan will blow the airflow of the set air volume through the inside of the second air duct. Then the airflow will test the air permeability of the bottom surface of the textile. After that, the airflow passing through the textile will drive the sliding ring to slide upward along the inner wall of the first air duct, and at the same time make the ruler protrude over the top of the first air duct. Then the operator can judge the air permeability of the textile by observing the distance that the scale protrudes from the surface of the first air duct. The whole testing process is relatively simple. The operator only needs to start the equipment and observe the results. This method reduces the labor cost and time cost of testing and improves the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The detection flow chart proposed by the present invention; Figure 2 It is a schematic diagram of the overall structure proposed by the present invention; Figure 3 It is a schematic diagram of the overall structure proposed by the present invention; Figure 4 This is a schematic diagram of the internal structure of the connection shell after cross-sectioning proposed by the present invention; Figure 5 It is a partial structural schematic diagram of the stretching mechanism proposed by the present invention; Figure 6 This is a schematic diagram of the internal structure of the first sliding block proposed by the present invention after cross-section; Figure 7 This is a schematic diagram of the internal structure of the first air duct proposed by the present invention after cross-section.

[0019] The markings in the attached drawings are: 1, base; 2, fixed frame; 3, stretching mechanism; 4, sliding rod; 5, sliding sleeve; 6, connecting frame; 7, connecting plate; 8, first tooth groove; 9, buffer clamping mechanism; 10, first air duct; 11, sliding ring; 12, ruler plate; 13, limit block; 14, scale; 15, mounting frame; 16, hydraulic cylinder; 17, fan; 18, second air duct; 301, connecting shell; 302, first slide groove ; 303, first sliding block; 304, second tooth groove; 305, gear ring; 306, flat thread; 307, second sliding groove; 308, first gear; 309, rotating rod; 310, second gear; 901, limiting rod; 902, second sliding block; 903, spring; 904, connecting rod; 905, clamping frame; 906, clamping bottom plate; 907, screw; 908, clamping top plate; 909, knob. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are only used to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, order or relative importance between these entities or operations.

[0022] For example, see Figure 1-7 , a method for testing the air permeability of textiles is as follows: When the textile is installed for air permeability testing, the buffer clamping mechanism 9 is first used to clamp the periphery of the textile so that the bottom of the textile covers the top of the second air duct 18, and then the output shaft of the hydraulic cylinder 16 is driven to output, and then the hydraulic cylinder 16 will drive the connecting frame 6 fixedly connected to its output shaft to move downward, and at the same time, the connecting frame 6 will drive the sliding sleeves 5 at both ends to move downward, and the sliding sleeves 5 slide downward along the outer wall of the sliding rod 4 to ensure that the downward movement of the connecting frame 6 is more stable, so that there will be no deviation, and when the connecting frame 6 moves downward, the connecting plate 7 will be driven to move downward, because the inner wall of the first tooth groove 8 matches and meshes with the inner wall of the gear teeth of the second gear 310, so when the connecting plate 7 moves downward, the second gear 310 will be driven to rotate through the first tooth groove 8, and then the second gear 310 will synchronously drive the first gear 308 to rotate through the rotating rod 309, and because the outer wall of the rotating rod 309 passes through the side wall of the connecting shell 301, it can ensure that the second gear 308 is rotated. The gear 310 and the first gear 308 maintain stability during the rotation process, and then the first gear 308 will drive the gear ring 305 that is matched and meshed therewith to rotate. Since the second tooth groove 304 is meshed with the plane thread 306, when the outer wall of the gear ring 305 rotates along the inner wall of the connecting shell 301, the second tooth groove 304 will slide along the inner wall of the first slide groove 302 through the plane thread 306, and the plurality of second tooth grooves 304 will move away from each other, driving the corresponding plurality of buffer clamping mechanisms 9 to stretch the textile, thereby preventing the surface of the textile from being straightened and flattened. When the connecting frame 6 moves downward, the first air cylinder 10 will also be driven to move downward, and then the bottom of the sliding ring 11 will be engaged with the top of the second air cylinder 18, and the textile will be pressed at the interface of the second air cylinder 18 of the sliding ring 11. When the sliding ring 11 and the second air cylinder 18 are engaged, the hydraulic cylinder 16 is stopped, thereby completing the installation work of detecting the textile. Before the air permeability test of the textile is required, the periphery of the textile is placed above the clamping bottom plate 906, and then the screw 907 can be driven to rotate by turning the knob 909. Since the clamping frame 905 is connected to the screw 907 through a thread, when the screw 907 rotates, it will drive the clamping top plate 908 at its bottom to slide downward against the side wall of the clamping frame 905. When sliding to a certain distance, the bottom of the clamping top plate 908 will contact the textile, and then the bottom of the clamping top plate 908 will be tightly squeezed on the top of the clamping bottom plate 906, and the textile will be pressed between the clamping top plate 908 and the clamping bottom plate 906. The extrusion surfaces of the clamping bottom plate 906 and the clamping top plate 908 are made of silicone. When the installation work of the air permeability test of the textile is completed, the fan 17 is driven to output, and then the fan 17 will blow the airflow of the set air volume through the inside of the second air duct 18, and then the airflow will perform air permeability test on the bottom surface of the textile, and then the airflow passing through the textile will flow into the inside of the first air duct 10, and then will impact the bottom of the sliding ring 11, thereby driving the sliding ring 11 to slide upward along the inner wall of the first air duct 10. In this process, the sliding ring 11 will drive the ruler 12 to move upward synchronously, and then the ruler 12 moving upward will protrude over the top of the first air duct 10. Since the side wall of the ruler 12 is provided with a scale 14, the operator can judge the air permeability of the textile by observing the distance that the scale 14 protrudes from the surface of the first air duct 10.

[0023] See also Figure 2-4 , a textile air permeability testing device, comprising a base 1, two fixed frames 2 are fixedly connected to the top of the base 1, a stretching mechanism 3 is arranged between the two fixed frames 2, a sliding rod 4 is fixedly connected to the top of the fixed frame 2, and a sliding sleeve 5 is slidably connected to the outer wall of the sliding rod 4, and a connecting frame 6 is fixedly connected to the outer wall of the sliding sleeve 5, a buffer clamping mechanism 9 is arranged inside the first sliding block 303, a first air cylinder 10 is fixedly connected to the inside of the connecting frame 6, and a sliding ring 11 is slidably connected to the inner wall of the first air cylinder 10, a mounting frame 15 is fixedly connected to the top of the sliding rod 4, and a hydraulic cylinder 16 is fixedly installed inside the mounting frame 15, a fan 17 is fixedly installed on the top of the base 1, and a second air cylinder 18 is fixedly connected to the output end of the fan 17; The stretching mechanism 3 includes a first sliding block 303, which can automatically stretch and smooth the textile during the detection work. A connecting shell 301 is fixedly connected between the two fixing frames 2, and a first sliding groove 302 is provided on the top of the connecting shell 301. The inner wall of the first sliding groove 302 is slidably connected to the first sliding block 303, and a second tooth groove 304 is provided at the bottom of the first sliding block 303. A tooth ring 305 is rotatably connected to the inner wall of the connecting shell 301, and a flat thread 306 is provided on the top of the tooth ring 305. The top of the first sliding block 303 is provided with a second sliding groove 307. A rotating rod 309 is rotatably connected to the interior of the connecting shell 301, and one end of the rotating rod 309 is fixedly connected to the first gear 308, and the end of the rotating rod 309 away from the first gear 308 is fixedly connected to the second gear 310, the inner wall of the second tooth groove 304 matches and meshes with the inner wall of the plane thread 306, the inner wall of the gear teeth of the first gear 308 matches and meshes with the inner wall of the gear ring 305, the side wall of the connecting frame 6 is fixedly connected to the connecting plate 7, and the side wall of the connecting plate 7 is provided with a first tooth groove 8, and the inner wall of the first tooth groove 8 matches and meshes with the inner wall of the gear teeth of the second gear 310; When installing the textile for air permeability testing, the buffer clamping mechanism 9 is first used to clamp the periphery of the textile so that the bottom of the textile covers the top of the second air duct 18, and then the output shaft of the hydraulic cylinder 16 is driven to output, and then the hydraulic cylinder 16 drives the connecting frame 6 fixedly connected to its output shaft to move downward, and at the same time, the connecting frame 6 drives the sliding sleeves 5 at both ends to move downward, and the sliding sleeves 5 slide downward along the outer wall of the sliding rod 4 to ensure that the downward movement of the connecting frame 6 is more stable, so that there will be no deviation. In this case, when the connecting frame 6 moves downward, the connecting plate 7 will be driven to move downward. Since the inner wall of the first tooth groove 8 is matched and meshed with the inner wall of the gear teeth of the second gear 310, the second gear 310 will be driven to rotate through the first tooth groove 8 when the connecting plate 7 moves downward. Then, the second gear 310 will synchronously drive the first gear 308 to rotate through the rotating rod 309. Since the outer wall of the rotating rod 309 penetrates and is rotatably connected to the side wall of the connecting shell 301, it can ensure that the second gear 310 and the first gear 308 maintain stability during the rotation process. A gear 308 drives the gear ring 305 that matches and meshes with it to rotate. Since the second tooth groove 304 is meshed with the plane thread 306, when the outer wall of the gear ring 305 rotates along the inner wall of the connecting shell 301, the second tooth groove 304 slides along the inner wall of the first slide groove 302 through the plane thread 306. The multiple second tooth grooves 304 move away from each other, driving the corresponding multiple buffer clamping mechanisms 9 to stretch the textile, thereby preventing the surface of the textile from being straightened and smoothed. When the frame 6 moves downward, it will also drive the first air cylinder 10 to move downward. When it moves to a certain position, the bottom of the first air cylinder 10 will contact the flattened textile, and then the bottom of the sliding ring 11 will be engaged with the top of the second air cylinder 18. At the same time, the textile will be pressed at the interface of the second air cylinder 18 of the sliding ring 11. When the sliding ring 11 and the second air cylinder 18 are engaged, the hydraulic cylinder 16 is stopped, thereby completing the installation work for testing the textile, thereby preventing the textile from being affected by wrinkles and affecting the air permeability test.

[0024] For example 2, please refer to Figure 5 and Figure 6On the basis of the first embodiment, in this embodiment, the buffer clamping mechanism 9 includes a limit rod 901, and the outer wall of the limit rod 901 is slidably connected to the second sliding block 902, the side wall of the second sliding block 902 is fixedly connected to the spring 903, the top of the second sliding block 902 is fixedly connected to the connecting rod 904, and the end of the connecting rod 904 away from the second sliding block 902 is fixedly connected to the clamping frame 905, the side wall of the clamping frame 905 is fixedly connected to the clamping bottom plate 906, and the inside of the clamping frame 905 is threadedly connected There is a screw rod 907, the bottom of the screw rod 907 is rotatably connected to a clamping top plate 908, and the end of the screw rod 907 away from the clamping top plate 908 is fixedly connected to a knob 909, both ends of the limit rod 901 are fixedly connected to the inner wall of the second slide groove 307, the end of the spring 903 away from the second sliding block 902 is fixedly connected to the inner wall of the second slide groove 307, the outer wall of the second sliding block 902 is slidably connected to the inner wall of the spring 903, and the side wall of the clamping top plate 908 is slidably connected to the side wall of the clamping frame 905; Before the breathability test of the textile is required, the periphery of the textile is placed above the clamping bottom plate 906, and then the screw 907 can be driven to rotate by turning the knob 909. Since the clamping frame 905 is connected to the screw 907 through a thread, the screw 907 will drive the clamping top plate 908 at its bottom to slide downward against the side wall of the clamping frame 905 when it rotates. When it slides to a certain distance, the bottom of the clamping top plate 908 will contact the textile, and then the bottom of the clamping top plate 908 will be tightly squeezed on the top of the clamping bottom plate 906, and the textile will be pressed between the clamping top plate 908 and the clamping bottom plate 906. By setting the extrusion surfaces of the clamping bottom plate 906 and the clamping top plate 908 to be made of silicone material, the characteristics of the silicone material can protect the textile from being broken due to extrusion, and at the same time, the friction force can be increased, thereby reducing the possibility of accidents caused by insufficient clamping during performance testing. Afterwards, during the process of the first sliding block 303 driving the buffer clamping mechanism 9 to stretch and smooth the textile, if the textile is subjected to too great a pulling force, the second sliding block 902 will be driven to slide along the outer wall of the second slide groove 307 through the clamping top plate 908 and the clamping bottom plate 906. By setting the limit rod 901, it can be ensured that the second sliding block 902 is more stable during the sliding process, and the spring 903 is compressed during the process. During the compression of the spring 903, it can be prevented that the textile is not subjected to excessive stretching during the installation process, thereby affecting the result of its breathability performance test. The elastic force generated by the compression of the spring 903 can keep the textile in a stretched and smoothed state at all times.

[0025] For example 3, please refer to Figure 2 and Figure 6 ,as well as Figure 7On the basis of the second embodiment, in this embodiment, the top of the sliding ring 11 is fixedly connected with a ruler plate 12, and the outer wall of the ruler plate 12 penetrates and slides inside the first wind tube 10, the top of the ruler plate 12 is fixedly connected with a limit block 13, and the side wall of the ruler plate 12 is provided with a scale 14, the output shaft of the hydraulic cylinder 16 is fixedly connected to the top of the connecting frame 6, the outer wall of the second wind tube 18 penetrates and is fixedly connected to the inside of the connecting shell 301, and the end of the second wind tube 18 away from the fan 17 corresponds to the bottom of the first wind tube 10; When the installation work of the air permeability test of the textile is completed, the fan 17 is driven to output, and then the fan 17 will blow the airflow of the set air volume through the inside of the second air duct 18, and then the airflow will perform air permeability test on the bottom surface of the textile, and then the airflow passing through the textile will flow into the inside of the first air duct 10, and then will impact the bottom of the sliding ring 11, thereby driving the sliding ring 11 to slide upward along the inner wall of the first air duct 10. In this process, the sliding ring 11 will drive the ruler 12 to move upward synchronously, and then the ruler 12 moving upward will protrude over the top of the first air duct 10. Since the side wall of the ruler 12 is provided with a scale 14, the operator can judge the air permeability of the textile by observing the distance that the scale 14 protrudes from the surface of the first air duct 10.

[0026] It should be noted that the various devices in this application are common devices in the market, and can be selected according to specific needs during specific use. The circuit connection relationship of each device belongs to a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can implement it relatively easily. It belongs to the existing technology and will not be elaborated on.

[0027] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A method for detecting air permeability of textiles, characterized in that: The following steps are involved: S1: Clamping and installation: The textile is clamped by the buffer clamping mechanism (9) on the base (1) and covered on the top of the second wind tube (18), and then the hydraulic cylinder (16) is driven to move the connecting frame (6) downward, and the gear ring (305) is driven to rotate, so that the multiple buffer clamping mechanisms (9) stretch the textile until it is straightened, and at the same time, the first wind tube (10) is moved downward, so that the sliding ring (11) and the second wind tube (18) are engaged, and the textile is pressed at the interface, and the detection and installation work is completed; S2: stretching and smoothing: during the installation of the textile, if the tension is too large, the clamping top plate (908) and the clamping bottom plate (906) drive the second sliding block (902) to slide along the second sliding groove (307), so that the limit rod (901) ensures stable sliding and the spring (903) is compressed to prevent the textile from being overstretched and affecting the air permeability test result. Afterwards, the elastic force of the spring (903) keeps the textile in a stretched and smoothed state at all times, ensuring the accuracy of the test; S3: Detection completed: The air flow of a set air volume is driven by the fan (17) to pass through the second air tube (18) to perform air permeability detection on the side of the textile. The air flow then flows into the first air tube (10) and impacts the sliding ring (11), causing the ruler plate (12) to slide upward along the first air tube (10). The ruler plate (12) then protrudes from the top of the first air tube (10). The operator determines the air permeability of the textile based on the protruding distance of the scale (14) on the side wall of the ruler plate (12).

2. A method for detecting air permeability of textiles according to claim 1, characterized in that: The top of the base (1) is fixedly connected to two fixing frames (2), a stretching mechanism (3) is provided between the two fixing frames (2), the top of the fixing frames (2) is fixedly connected to a sliding rod (4), and the outer wall of the sliding rod (4) is slidably connected to a sliding sleeve (5), and the end of the connecting frame (6) is fixedly connected to the outer wall of the sliding sleeve (5); The stretching mechanism (3) comprises a first sliding block (303) which automatically stretches and smoothes the textile during the detection operation; The buffer clamping mechanism (9) is arranged inside the first sliding block (303) to buffer the tensile force applied to the textile during the process of clamping the textile.

3. A method for detecting air permeability of textiles according to claim 2, characterized in that: A connecting shell (301) is fixedly connected between the two fixing frames (2), and a first sliding groove (302) is provided through the top of the connecting shell (301), a first sliding block (303) is slidably connected to the inner wall of the first sliding groove (302), and a second tooth groove (304) is provided at the bottom of the first sliding block (303), the gear ring (305) is rotatably connected to the inner wall of the connecting shell (301), and a plane thread (306) is provided on the top of the gear ring (305), the second sliding groove (307) is provided on the top of the first sliding block (303), a rotating rod (309) is rotatably connected to the inside of the connecting shell (301), and one end of the rotating rod (309) is fixedly connected to the first gear (308), and the end of the rotating rod (309) away from the first gear (308) is fixedly connected to the second gear (310).

4. A method for detecting air permeability of textiles according to claim 3, characterized in that: The inner wall of the second tooth groove (304) matches and meshes with the inner wall of the planar thread (306), and the inner wall of the gear teeth of the first gear (308) matches and meshes with the inner wall of the gear ring of the gear ring (305).

5. A method for detecting air permeability of textiles according to claim 3, characterized in that: A connecting plate (7) is fixedly connected to the side wall of the connecting frame (6), and a first tooth groove (8) is formed on the side wall of the connecting plate (7), wherein the inner wall of the first tooth groove (8) matches and meshes with the inner wall of the gear teeth of the second gear (310).

6. A method for detecting air permeability of textiles according to claim 3, characterized in that: The second sliding block (902) is slidably connected to the outer wall of the limiting rod (901), the spring (903) is fixedly connected to the side wall of the second sliding block (902), the top of the second sliding block (902) is fixedly connected to a connecting rod (904), and the end of the connecting rod (904) away from the second sliding block (902) is fixedly connected to a clamping frame (905), the clamping bottom plate (906) is fixedly connected to the side wall of the clamping frame (905), and a screw rod (907) is threadedly connected to the inside of the clamping frame (905), the clamping top plate (908) is rotatably connected to the bottom of the screw rod (907), and the end of the screw rod (907) away from the clamping top plate (908) is fixedly connected to a knob (909).

7. A method for detecting air permeability of textiles according to claim 6, characterized in that: Both ends of the limit rod (901) are fixedly connected to the inner wall of the second slide groove (307), the end of the spring (903) away from the second sliding block (902) is fixedly connected to the inner wall of the second slide groove (307), the outer wall of the second sliding block (902) is slidably connected to the inner wall of the spring (903), and the side wall of the clamping top plate (908) is slidably connected to the side wall of the clamping frame (905).

8. A method for detecting air permeability of textiles according to claim 2, characterized in that: The outer wall of the first air duct (10) passes through and is fixedly connected to the interior of the connecting frame (6); the sliding ring (11) is slidably connected to the inner wall of the first air duct (10); the ruler plate (12) is fixedly connected to the top of the sliding ring (11); and the outer wall of the ruler plate (12) passes through and slides in the interior of the first air duct (10); the top of the ruler plate (12) is fixedly connected to a limiting block (13); and the scale (14) is provided on the side wall of the ruler plate (12).

9. A method for detecting air permeability of textiles according to claim 2, characterized in that: The top of the slide rod (4) is fixedly connected to a mounting frame (15), the hydraulic cylinder (16) is fixedly mounted inside the mounting frame (15), and the output shaft of the hydraulic cylinder (16) is fixedly connected to the top of the connecting frame (6).

10. A method for detecting air permeability of textiles according to claim 3, characterized in that: The fan (17) is fixedly mounted on the top of the base (1), the second air tube (18) is fixedly connected to the output end of the fan (17), the outer wall of the second air tube (18) passes through and is fixedly connected to the interior of the connecting shell (301), and an end of the second air tube (18) away from the fan (17) corresponds to the bottom of the first air tube (10).

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