A method for detecting the air permeability of textiles

Abstract

A method for detecting the air permeability of textiles belongs to the technical field of textile performance detection. The present invention includes clamping and installation, stretching and leveling, and detection completion. First, a buffer clamping mechanism is used to clamp the textile. The connecting frame is driven by a hydraulic cylinder to move downward, and the toothed ring rotates to stretch the textile to a flat state. At the same time, the first air cylinder moves downward to fix the textile. During the stretching process, if the pulling force is too large, the spring mechanism will play a role to prevent the textile from being overstretched and maintain its original air permeability. Subsequently, the fan is started, and the side of the textile is subjected to air permeability detection through the second air cylinder. The air flow pushes the sliding ring to rise, driving the scale plate to slide upward. Finally, the operator accurately judges the air permeability of the textile according to the distance that the scale on the side wall of the scale plate protrudes from the top of the first air cylinder. The entire process has a high degree of automation, ensuring the accuracy and reliability of the detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of textile performance detection, and particularly relates to a method for detecting the air permeability of textiles. Background Art

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

[0003] However, when detecting textiles in the prior art, it is necessary to first tightly fix the textiles. However, during the installation process of the textiles, there is no function to stretch the textiles, which may cause the textiles to probabilistically wrinkle, thus affecting the subsequent air permeability test results. If manually stretching and smoothing the textiles during installation by hand, it is easy to cause the operator to be accidentally injured by the device during this process. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that textiles may wrinkle 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 purpose, the present invention adopts the following method for detecting the air permeability of textiles, including the following steps:

[0006] Clamping and installation: The buffer clamping mechanism clamps the textile and covers the top of the second air cylinder. Then, the hydraulic cylinder is driven to move the connecting frame downward. By driving the toothed ring to rotate, multiple buffer clamping mechanisms stretch the textile until it is straightened. At the same time, by moving the first air cylinder downward, the sliding ring is engaged with the second air cylinder, and the textile is pressed at the interface to complete the detection installation work;

[0007] Stretching and smoothing: During the installation process of the textile, if the pulling force is too large, at this time, the clamping top plate and the clamping bottom plate will drive the second sliding block to slide along the second chute, so that the limiting rod ensures stable sliding, thereby compressing the spring to prevent the textile from being overstretched and affecting the air permeability test results. After that, the elastic force of the spring keeps the textile in a stretched and smoothed state all the time, ensuring the detection accuracy;

[0008] Detection completed: By driving the fan to blow the airflow with a set air volume through the second air duct to conduct air permeability detection on the side of the textile, and then the airflow flows into the first air duct to impact the sliding ring, making the tape board slide up along the first air duct. After that, the tape board will protrude from the top of the first air duct, and the operator judges the air permeability of the textile according to the protruding distance of the scale on the side wall of the tape board.

[0009] This application also provides a device for detecting the air permeability of textiles, including a base. A fixed frame is fixedly connected to the top of the base. A stretching mechanism is arranged between the two fixed frames. A sliding rod is fixedly connected to the top of the fixed frame, and a sliding sleeve is slidably connected to the outer wall of the sliding rod. A connecting frame is fixedly connected to the outer wall of the sliding sleeve.

[0010] The stretching mechanism includes a first sliding block, which can automatically stretch and smooth the textile during the detection work.

[0011] A buffer clamping mechanism is arranged inside the first sliding block to buffer the tensile force on the textile during the clamping process.

[0012] Furthermore, a connecting shell is fixedly connected between the two fixed frames, and a first chute is penetrated and opened at the top of the connecting shell. The inner wall of the first chute is slidably connected with a first sliding block, and a second tooth groove is opened at the bottom of the first sliding block. A toothed ring is rotatably connected to the inner wall of the connecting shell, and a plane thread is opened at the top of the toothed ring. A second chute is opened at the top of the first sliding block. A rotating rod is penetrated and rotatably connected inside the connecting shell, and a first gear is fixedly connected to one end of the rotating rod. A second gear is fixedly connected to the end of the rotating rod away from the first gear.

[0013] Furthermore, the inner wall of the second tooth groove is matched and meshed with the inner wall of the plane thread, and the inner wall of the tooth ring of the first gear is matched and meshed with the tooth ring inner wall of the toothed ring.

[0014] Furthermore, a connecting plate is fixedly connected to the side wall of the connecting frame, and a first tooth groove is opened on the side wall of the connecting plate. The inner wall of the first tooth groove is matched and meshed with the inner wall of the tooth ring of the second gear.

[0015] Furthermore, the buffer clamping mechanism includes a limiting rod, and a second sliding block is slidably connected to the outer wall of the limiting rod. A spring is fixedly connected to the side wall of the second sliding block. A connecting rod is fixedly connected to the top of the second sliding block, and a clamping frame is fixedly connected to the end of the connecting rod away from the second sliding block. A clamping bottom plate is fixedly connected to the side wall of the clamping frame, and a screw rod is penetrated and threadedly connected inside the clamping frame. A clamping top plate is rotatably connected to the bottom of the screw rod, and a knob is fixedly connected to the end of the screw rod away from the clamping top plate.

[0016] Furthermore, both ends of the limiting rod are fixedly connected to the inner wall of the second sliding groove. The end of the spring away from the second sliding block is fixedly connected to the inner wall of the second sliding groove. The outer wall of the second sliding block is in sliding fit with the inner wall of the spring. The side wall of the clamping top plate is in sliding fit with the side wall of the clamping frame.

[0017] Furthermore, a first air duct is fixedly connected through the inside of the connecting frame. A sliding ring is in sliding fit with the inner wall of the first air duct. A scale plate is fixedly connected to the top of the sliding ring. The outer wall of the scale plate slides through the inside of the first air duct. A limiting block is fixedly connected to the top of the scale plate. A scale is provided on the side wall of the scale plate.

[0018] Furthermore, the top of the sliding rod is fixedly connected to a mounting frame. A hydraulic cylinder is fixedly installed inside the mounting frame. The output shaft of the hydraulic cylinder is fixedly connected to the top of the connecting frame.

[0019] Furthermore, a blower is fixedly installed on the top of the base. The output end of the blower is fixedly connected to a second air duct. The outer wall of the second air duct is fixedly connected through the inside of the connecting shell. One end of the second air duct away from the blower corresponds to the bottom of the first air duct.

[0020] Compared with the prior art, the above solution has the following beneficial effects:

[0021] 1. When installing the textile, by moving a plurality of second tooth grooves away from each other, a corresponding plurality of buffer clamping mechanisms are driven to stretch the textile, so that the surface of the textile is straightened and smoothed. While the connecting frame moves downward, it will also drive the first air duct to move downward. Then the bottom of the sliding ring will be clamped on the top of the second air duct. At the same time, the textile will be pressed at the interface between the sliding ring and the second air duct, thus completing the installation work of detecting the textile, ensuring that the textile will not have wrinkles during the installation process, which will affect the subsequent air permeability detection work, and improving the stability of the detection work.

[0022] 2. When installing the textile, when the first sliding block drives the buffer clamping mechanism to stretch and smooth the textile, if the tensile force on the textile is too large, the second sliding block will be driven to slide along the outer wall of the second sliding groove through the clamping top plate and the clamping bottom plate. By setting the limiting rod, it can ensure that the second sliding block is more stable during the sliding process. During the process, the spring is compressed. Through the elastic force generated by the compression of the spring, the textile can always be kept in a stretched and smoothed state. During the compression of the spring, it can prevent the textile from being overstretched during the installation process, which will affect the result of its air permeability detection.

[0023] 3. When detecting the air permeability of textiles, first drive the fan to output, and then the fan will blow an air flow with a set air volume through the inside of the second air duct. Then, the air flow will perform an air permeability test on the bottom surface of the textile. After that, the air flow 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, the scale plate will protrude above 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 detection 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 detection and improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the detection flow chart proposed by the present invention;

[0025] Figure 2 is the overall structural schematic diagram proposed by the present invention;

[0026] Figure 3 is the overall structural schematic diagram proposed by the present invention;

[0027] Figure 4 is the internal structural schematic diagram of the connection shell after being sectioned as proposed by the present invention;

[0028] Figure 5 is the partial structural schematic diagram of the stretching mechanism proposed by the present invention;

[0029] Figure 6 is the internal structural schematic diagram of the first sliding block after being sectioned as proposed by the present invention;

[0030] Figure 7 is the internal structural schematic diagram of the first air duct after being sectioned as proposed by the present invention.

[0031] The reference signs in the drawings are: 1, base; 2, fixing 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, scale plate; 13, limiting block; 14, scale; 15, mounting frame; 16, hydraulic cylinder; 17, fan; 18, second air duct; 301, connection shell; 302, first sliding groove; 303, first sliding block; 304, second tooth groove; 305, tooth ring; 306, planar 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 rod; 908, clamping top plate; 909, knob. DETAILED DESCRIPTION OF THE INVENTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top surface", "bottom surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the position or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish one 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.

[0034] Embodiment 1, please refer to Figure 1-7 , a process for detecting the air permeability of textiles is as follows:

[0035] When installing the textile for air permeability detection, first, the buffer clamping mechanism 9 can clamp the periphery of the textile, covering the bottom of the textile on the top of the second air duct 18. Then, the output shaft of the driving hydraulic cylinder 16 outputs. Next, the hydraulic cylinder 16 drives the connecting frame 6 fixedly connected to its output shaft to move downward. At the same time, the connecting frame 6 drives the sliding sleeves 5 at both ends to move downward. By sliding the sliding sleeves 5 downward along the outer wall of the sliding rods 4, it can ensure that the downward movement of the connecting frame 6 is more stable, so that there will be no deviation. When the connecting frame 6 moves downward, it drives the connecting plate 7 to move downward. Since the inner wall of the first tooth groove 8 matches and meshes with the tooth inner wall of the second gear 310, when the connecting plate 7 moves downward, it drives the second gear 310 to rotate through the first tooth groove 8. Then, the second gear 310 synchronously drives 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 the stability of the second gear 310 and the first gear 308 during rotation. Then, the first gear 308 drives the tooth ring 305 that meshes with it to rotate. Since the second tooth groove 304 meshes with the planar thread 306, when the outer wall of the tooth ring 305 rotates along the inner wall of the connecting shell 301, it makes the second tooth groove 304 slide along the inner wall of the first chute 302 through the planar thread 306. By moving the multiple second tooth grooves 304 away from each other, it drives the corresponding multiple buffer clamping mechanisms 9 to stretch the textile, so as to straighten and smooth the surface of the textile. When the connecting frame 6 moves downward, it also drives the first air duct 10 to move downward. Then, the bottom of the sliding ring 11 is clamped on the top of the second air duct 18, and at the same time, the textile is pressed at the interface between the sliding ring 11 and the second air duct 18. When the sliding ring 11 and the second air duct 18 are clamped, the driving hydraulic cylinder 16 is stopped at this time, thus completing the installation work for detecting the textile;

[0036] Before detecting the air permeability of the textile, place the periphery of the textile above the clamping bottom plate 906. Then, rotate the knob 909 to drive the screw rod 907 to rotate. Since the clamping frame 905 is connected to the screw rod 907 by threads, when the screw rod 907 rotates, it drives the clamping top plate 908 at its bottom to slide downward along the side wall of the clamping frame 905. When sliding to a certain distance, the bottom of the clamping top plate 908 contacts the textile at this time. Then, the bottom of the clamping top plate 908 tightly presses on the top of the clamping bottom plate 906, and at the same time, the textile is 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 silica gel;

[0037] When completing the installation work for the air permeability detection of textiles, then drive the fan 17 to output. Then the fan 17 will blow an air flow with a set air volume through the inside of the second air duct 18. Next, the air flow will conduct air permeability detection on the bottom surface of the textile. After that, the air flow passing through the textile will flow into the inside of the first air duct 10, and then 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. During this process, the sliding ring 11 will drive the scale plate 12 to move upward synchronously. Then the upward-moving scale plate 12 will protrude above the top of the first air duct 10. Since the side wall of the scale plate 12 is provided with graduations 14, the operator can judge the air permeability of the textile by observing the distance that the graduations 14 protrude from the surface of the first air duct 10.

[0038] Please refer to Figure 2-4 , a device for detecting the air permeability of textiles, including a base 1. A top of the base 1 is fixedly connected with two fixing frames 2. A stretching mechanism 3 is arranged between the two fixing frames 2. A top of the fixing frame 2 is fixedly connected with a sliding rod 4, and an outer wall of the sliding rod 4 is slidably connected with a sliding sleeve 5. An outer wall of the sliding sleeve 5 is fixedly connected with a connecting frame 6. A buffer clamping mechanism 9 is arranged inside a first sliding block 303. A first air duct 10 is fixedly connected through an inside of the connecting frame 6, and an inner wall of the first air duct 10 is fittingly and slidably connected with a sliding ring 11. A top of the sliding rod 4 is fixedly connected with a mounting frame 15, and a hydraulic cylinder 16 is fixedly installed inside the mounting frame 15. A fan 17 is fixedly installed on a top of the base 1, and an output end of the fan 17 is fixedly connected with a second air duct 18;

[0039] The stretching mechanism 3 includes a first sliding block 303. When the detection work is in progress, it can automatically stretch and smooth the textile. A connecting shell 301 is fixedly connected between the two fixing frames 2, and a first sliding groove 302 is formed through a top of the connecting shell 301. An inner wall of the first sliding groove 302 is slidably connected with the first sliding block 303, and a second tooth groove 304 is formed at a bottom of the first sliding block 303. A toothed ring 305 is rotatably connected to an inner wall of the connecting shell 301, and a planar thread 306 is formed at a top of the toothed ring 305. A second sliding groove 307 is formed at a top of the first sliding block 303. A rotating rod 309 is rotatably connected through an inside of the connecting shell 301, and a first gear 308 is fixedly connected to one end of the rotating rod 309. A second gear 310 is fixedly connected to an end of the rotating rod 309 away from the first gear 308. An inner wall of the second tooth groove 304 is in matching engagement with an inner wall of the planar thread 306. An inner wall of the tooth ring of the first gear 308 is in matching engagement with an inner wall of the toothed ring 305. A connecting plate 7 is fixedly connected to a side wall of the connecting frame 6, and a first tooth groove 8 is formed at a side wall of the connecting plate 7. An inner wall of the first tooth groove 8 is in matching engagement with an inner wall of the tooth ring of the second gear 310;

[0040] When performing the installation work for testing the air permeability of textiles, first, the buffer clamping mechanism 9 can clamp the periphery of the textile, covering the bottom of the textile on the top of the second air cylinder 18. Then, the output shaft of the driving hydraulic cylinder 16 outputs. Next, the hydraulic cylinder 16 drives the connecting frame 6 fixedly connected to its output shaft to move downward. At the same time, the connecting frame 6 drives the sliding sleeves 5 at both ends to move downward. By sliding the sliding sleeves 5 downward along the outer wall of the sliding rods 4, it can ensure that the downward movement of the connecting frame 6 is more stable, thus preventing deviation. When the connecting frame 6 moves downward, it drives the connecting plate 7 to move downward. Since the inner wall of the first tooth groove 8 is matched and meshed with the tooth inner wall of the second gear 310, when the connecting plate 7 moves downward, it drives the second gear 310 to rotate through the first tooth groove 8. Then, the second gear 310 synchronously drives 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 the stability of the second gear 310 and the first gear 308 during rotation. Next, the first gear 308 drives the tooth ring 305 meshed with it to rotate. Since the second tooth groove 304 is meshed with the planar thread 306, when the outer wall of the tooth ring 305 rotates along the inner wall of the connecting shell 301, it causes the second tooth groove 304 to slide along the inner wall of the first chute 302 through the planar thread 306. By moving the multiple second tooth grooves 304 away from each other, it drives the corresponding multiple buffer clamping mechanisms 9 to stretch the textile, thereby straightening and smoothing the surface of the textile. When the connecting frame 6 moves downward, it also drives the first air cylinder 10 to move downward. When it moves to a certain position, at this time, the bottom of the first air cylinder 10 will contact the textile that has been flattened. Then, the bottom of the sliding ring 11 will be clamped on the top of the second air cylinder 18, and at the same time, the textile will be pressed at the interface between the sliding ring 11 and the second air cylinder 18. When the sliding ring 11 and the second air cylinder 18 are clamped, at this time, the driving hydraulic cylinder 16 is stopped, thus completing the installation work for testing the textile, and it can avoid the influence of textile wrinkles on the air permeability test.

[0041] Embodiment 2, please refer to Figure 5 and Figure 6, on the basis of the first embodiment, in this embodiment, the buffer clamping mechanism 9 includes a limiting rod 901, and a second sliding block 902 is slidably connected to the outer wall of the limiting rod 901. A spring 903 is fixedly connected to the side wall of the second sliding block 902. A connecting rod 904 is fixedly connected to the top of the second sliding block 902, and a clamping frame 905 is fixedly connected to the end of the connecting rod 904 away from the second sliding block 902. A clamping bottom plate 906 is fixedly connected to the side wall of the clamping frame 905, and a screw rod 907 is threadedly connected through the inside of the clamping frame 905. The bottom of the screw rod 907 is rotatably connected to a clamping top plate 908, and a knob 909 is fixedly connected to the end of the screw rod 907 away from the clamping top plate 908. Both ends of the limiting rod 901 are fixedly connected to the inner wall of the second sliding 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 sliding groove 307. The outer wall of the second sliding block 902 is in sliding fit with the inner wall of the spring 903. The side wall of the clamping top plate 908 is in sliding fit with the side wall of the clamping frame 905;

[0042] Before the air permeability of the textile needs to be detected, by placing the periphery of the textile above the clamping bottom plate 906, and then rotating the knob 909 can drive the screw rod 907 to rotate. Since the clamping frame 905 is connected to the screw rod 907 through threads, when the screw rod 907 rotates, it will drive the clamping top plate 908 at its bottom to slide downward along the side wall of the clamping frame 905. When sliding a certain distance, at this time, the bottom of the clamping top plate 908 will contact the textile, and then the bottom of the clamping top plate 908 will tightly press on the top of the clamping bottom plate 906, and at the same time, 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 silica gel material, its characteristics can protect the textile from being broken due to extrusion, and at the same time, it can increase the friction force and reduce the possibility of accidents caused by insufficient clamping during performance testing;

[0043] After that, during the process of the first sliding block 303 driving the buffer clamping mechanism 9 to stretch and flatten the textile, if the tensile force on the textile is too large, it will drive the second sliding block 902 to slide along the outer wall of the second sliding groove 307 through the clamping top plate 908 and the clamping bottom plate 906. By setting the limiting rod 901, it can ensure that the second sliding block 902 slides more stably during the sliding process. During the process, the spring 903 is compressed. During the compression of the spring 903, it can prevent the textile from being overstretched during installation, thus affecting the result of its air permeability detection. Through the elastic force generated by the compression of the spring 903, the textile can always be kept in a stretched and flattened state.

[0044] Embodiment Three, please refer to Figure 2 and Figure 6 andFigure 7 , on the basis of the second embodiment, in this embodiment, a scale plate 12 is fixedly connected to the top of the sliding ring 11, and the outer wall of the scale plate 12 penetrates and slides inside the first air duct 10. A limit block 13 is fixedly connected to the top of the scale plate 12, and a scale 14 is provided on the side wall of the scale plate 12. 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 air duct 18 penetrates and is fixedly connected inside the connecting shell 301, and the end of the second air duct 18 away from the fan 17 corresponds to the bottom of the first air duct 10;

[0045] When completing the installation work for the air permeability detection of the textile, then drive the fan 17 to output. Then the fan 17 will blow the airflow with a set air volume through the inside of the second air duct 18. Then the airflow will conduct air permeability detection on the bottom surface of the textile. After that, 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. During this process, the sliding ring 11 will drive the scale plate 12 to move upward synchronously. Then the upward-moving scale plate 12 will protrude above the top of the first air duct 10. Since the scale 14 is provided on the side wall of the scale plate 12, 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.

[0046] It should be noted that the devices in this application are all common devices in the market and can be selected according to needs during specific use. And the circuit connection relationships of the devices all belong to simple series and parallel connection circuits, and there is no innovation point in the circuit connection part. Those skilled in the art can relatively easily implement it, which belongs to the prior art and will not be elaborated further.

[0047] 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 should be subject to the scope defined by the claims.

Claims

1. A method for detecting the air permeability of textiles, characterized in that, It includes a base. Two fixing frames (2) are fixedly connected to the top of the base (1). A sliding rod (4) is fixedly connected to the top of the fixing frame (2). A sliding sleeve (5) is slidably connected to the outer wall of the sliding rod (4). The end of a connecting frame (6) is fixedly connected to the outer wall of the sliding sleeve (5). The outer wall of a first air duct (10) is fixedly connected through the inside of the connecting frame (6). A sliding ring (11) is slidably connected to the inner wall of the first air duct (10). A connecting shell (301) is fixedly connected between the two fixing frames (2). A first chute (302) is formed through the top of the connecting shell (301). A first sliding block (303) is slidably connected to the inner wall of the first chute (302). A second tooth groove (304) is formed 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). A planar thread (306) is formed at the top of the tooth ring (305). A second chute (307) is formed at the top of the first sliding block (303). A rotating rod (309) is rotatably connected through the inside of the connecting shell (301). One end of the rotating rod (309) is fixedly connected to a first gear (308). A second gear (310) is fixedly connected to the end of the rotating rod (309) away from the first gear (308). A buffer clamping mechanism (9) is arranged inside the first sliding block (303). The buffer clamping mechanism (9) includes a limiting rod (901). A second sliding block (902) is slidably connected to the outer wall of the limiting rod (901). A spring (903) is fixedly connected to the side wall of the second sliding block (902). A connecting rod (904) is fixedly connected to the top of the second sliding block (902). The end of the connecting rod (904) away from the second sliding block (902) is fixedly connected to a clamping frame (905). A clamping bottom plate (906) is fixedly connected to the side wall of the clamping frame (905). A screw rod (907) is threadedly connected through the inside of the clamping frame (905). A clamping top plate (908) is rotatably connected to the bottom of the screw rod (907). A knob (909) is fixedly connected to the end of the screw rod (907) away from the clamping top plate (908). The implementation steps are as follows: S1: Clamping and installation: Clamp the textile with the buffer clamping mechanism (9) on the base (1) and cover it on the top of the second air duct (18). Then drive the hydraulic cylinder (16) to move the connecting frame (6) downward. By driving the rotation of the tooth ring (305), stretch the textile with multiple buffer clamping mechanisms (9) until it is straightened. At the same time, move the first air duct (10) downward to make the sliding ring (11) engage with the second air duct (18), and press the textile at the interface to complete the detection and installation work. S2: Stretching and smoothing: During the installation of the textile, if the pulling force 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 chute (307), so that the limiting rod (901) ensures stable sliding and the spring (903) is compressed, preventing the textile from being overstretched and affecting the air permeability test result. Then, the elastic force of the spring (903) keeps the textile in a stretched and smoothed state all the time, ensuring the test accuracy. S3: Test completion: The fan (17) is driven to blow an air flow with a set air volume through the second air duct (18) to conduct an air permeability test on the side of the textile. Then, the air flow flows into the first air duct (10) and impacts the sliding ring (11), causing the tape plate (12) to slide upward along the first air duct (10). After that, the tape plate (12) will protrude from the top of the first air duct (10), and the operator judges the air permeability of the textile according to the protruding distance of the scale (14) on the side wall of the tape plate (12).

2. The method for detecting the air permeability of a textile according to claim 1, wherein: A stretching mechanism (3) is arranged between the two fixed frames (2); The stretching mechanism (3) includes a first sliding block (303) to automatically stretch and smooth the textile during the test work; During the process of clamping the textile, the buffer clamping mechanism buffers the tensile force applied to the textile.

3. The textile air permeability detection method according to claim 2, wherein The inner wall of the second tooth groove (304) is matched and meshed with the inner wall of the plane thread (306), and the inner wall of the tooth of the first gear (308) is matched and meshed with the inner wall of the tooth ring (305).

4. A method for detecting the air permeability of a textile according to claim 1, 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 opened on the side wall of the connecting plate (7). The inner wall of the first tooth groove (8) is matched and meshed with the inner wall of the tooth of the second gear (310).

5. A method for detecting the air permeability of a textile according to claim 1, characterized in that One end of the spring (903) far from the second sliding block (902) is fixedly connected to the inner wall of the second chute (307). The outer wall of the second sliding block (902) is in sliding fit with the inner wall of the spring (903), and the side wall of the clamping top plate (908) is in sliding fit with the side wall of the clamping frame (905).

6. A method for detecting the air permeability of a textile according to claim 2, characterized in that, The tape plate (12) is fixedly connected to the top of the sliding ring (11), and the outer wall of the tape plate (12) slides through the inside of the first air duct (10). A limiting block (13) is fixedly connected to the top of the tape plate (12), and the scale (14) is opened on the side wall of the tape plate (12).

7. A method for detecting the air permeability of a textile according to claim 2, characterized in that, The top of the sliding rod (4) is fixedly connected with a mounting frame (15), the hydraulic cylinder (16) is fixedly installed 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).

8. A method for detecting the air permeability of a textile according to claim 1, characterized in that, The fan (17) is fixedly installed on the top of the base (1), the second air duct (18) is fixedly connected to the output end of the fan (17), the outer wall of the second air duct (18) is fixedly connected through the inside of the connecting shell (301), and the end of the second air duct (18) far from the fan (17) corresponds to the bottom of the first air duct (10).

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