Textile air permeability detection device

Abstract

The invention belongs to the technical field of textile fabric air permeability detection, and particularly relates to a textile air permeability detection device which comprises two detection covers, a textile fabric is placed between the two detection covers, and round holes are formed in the ends, away from the textile fabric, of the detection covers respectively. Connecting pipes are fixedly connected to the positions, corresponding to the round holes, of the lower end of the detection cover located at the lower end, an air pump is installed on the connecting pipes, a wind speed sensor is installed in the detection cover located at the upper end, a stretching assembly is arranged in the detection cover, and the stretching assembly comprises a first round ring arranged in the detection cover in a sliding mode; fifth circular rings are rotationally arranged on the sides, close to the textile fabric, of the first circular rings, the surfaces of the textile fabric can be rubbed by driving the fifth circular rings to rotate, various states of the textile fabric after long-time use can be simulated, the state of the textile fabric after long-time use can be simulated, and then air permeability testing is conducted; and a more comprehensive test result can be obtained.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile fabric air permeability detection, and specifically relates to a textile air permeability detection device. Background Art

[0002] Textiles are products woven from textile fibers through processing, including natural fibers and synthetic fibers. Natural fibers such as cotton, wool, and linen belong to natural fibers, while polyester (polyester fiber), nylon, acrylic, etc. belong to synthetic fibers. Synthetic fibers have characteristics such as high strength, good elasticity, wear resistance, and chemical corrosion resistance. When processing warm textiles, it is necessary to test the air permeability of the textiles to test the warmth retention effect of the textiles.

[0003] A patent application with the publication number CN117929239B discloses a textile air permeability detection device and method. Air is blown upward through an air duct, and the textile fabric covers the upper end of the air duct. The partition plate divides at least two detection chambers. The airflow passes through the textile fabric and is detected by the wind speed sensor in the detection chamber, thereby detecting the air permeability effect of the textile fabric. The textile fabric is stretched or contracted by a radial stretching device to detect the air permeability maintenance condition under the elastic condition of the textile fabric, so as to carry out technical improvement according to the characteristics of the textile fabric, making the performance of the textile fabric more stable after use and meeting the actual wearing requirements.

[0004] In the above-mentioned prior art, when detecting the air permeability of warm textiles, the textiles are repeatedly pulled and then the air permeability is detected to simulate the warmth retention effect of the textiles after being repeatedly stretched during long-term use. However, when textiles are in use, they are not only repeatedly stretched but also rubbed. The prior art cannot simulate the air permeability of textiles after being rubbed, so as to judge the warmth retention effect of textiles after being rubbed during long-term use, and a more comprehensive test result cannot be obtained.

[0005] Therefore, the present invention provides a textile air permeability detection device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A textile air permeability detection device described in the present invention includes two detection covers. A textile fabric is placed between the two detection covers, and the detection covers clamp the textile fabric. Circular holes are respectively formed at one ends of the detection covers away from the textile fabric. Connecting pipes are respectively fixedly connected to the lower ends of the detection covers corresponding to the positions of the circular holes, and air pumps are installed on the connecting pipes. A wind speed sensor is installed inside the upper detection cover. A stretching component is arranged inside the detection cover. The stretching component includes a first ring slidably arranged inside the detection cover, and a fifth ring is respectively rotatably arranged on one side of the first ring close to the textile fabric.

[0008] Preferably, a number of third rectangular bars are respectively rotatably arranged around the first ring, and the third rectangular bars are respectively slidably arranged inside second rectangular cylinders. The second rectangular cylinders are respectively rotatably arranged around the inner walls of the detection covers. One side of each second rectangular cylinder is respectively rotatably connected to a fourth rectangular bar, and the fourth rectangular bars are respectively slidably arranged in the middle of the detection covers.

[0009] Preferably, a cross block is fixedly connected to the lower end of the fifth ring. Rectangular grooves are respectively formed at the four corners of the lower end of the cross block. Rectangular sliding bars are respectively slidably connected inside the rectangular grooves. The rectangular sliding bars are fixedly connected to one side inside the rectangular grooves through springs. A number of convex blocks are respectively fixedly connected to the sides of the cross block and the rectangular sliding bars facing the textile fabric.

[0010] Preferably, second rings are respectively fixedly connected to the ends of the fourth rectangular bars away from the textile fabric. A third ring is fixedly connected to the middle of the second ring through a first rectangular block. A first cylindrical rod is fixedly connected to the side of the cross block away from the textile fabric. A fourth ring is fixedly connected to the middle of the first ring through a second rectangular block. The first cylindrical rod slidably penetrates through the middle of the detection cover, and the first cylindrical rod is rotatably arranged in the middle of the fourth ring and the third ring.

[0011] Preferably, a rectangular plate is fixedly connected to the outside of the middle of the detection cover. Flattening components are respectively arranged on the opposite sides of the rectangular plate. The flattening component includes a telescopic rod rotatably arranged on the outside of the detection cover, and a runner is rotatably connected to one end of the telescopic rod close to the textile fabric through a damper.

[0012] Preferably, the lower rectangular plate is fixedly connected to a bottom plate through a support column. Slide rails are respectively fixedly connected to both sides of the upper end of the bottom plate. Sliders are respectively slidably arranged on one side of the slide rails. Both sides of the upper rectangular plate are respectively fixedly connected to the sliders.

[0013] Preferably, one side of the upper end of the bottom plate is fixedly connected with a second cylindrical rod. One side of the rectangular plate is slidably arranged on the outer side of the second cylindrical rod through a second rectangular strip. One side of the second ring is fixedly connected with a fifth rectangular strip respectively. The fifth rectangular strip is slidably arranged on the outer side of the second cylindrical rod. A connecting block is fixedly connected to the middle of the second cylindrical rod. A first cylinder is rotatably connected to the middle of the connecting block. Special-shaped cylinders are respectively slidably arranged inside both ends of the first cylinder. One side of the fifth rectangular strip is fixedly connected with a third rectangular block respectively. A lead screw is rotatably arranged on the opposite sides of the third rectangular block respectively. The lead screws are respectively in threaded connection with the inside of the special-shaped cylinders. Second cylinders are respectively fixedly connected to the outer sides of the special-shaped cylinders. The second cylinders are respectively rotatably arranged in the middle of the second rectangular strip.

[0014] Preferably, a third cylinder is rotatably arranged in the middle of the connecting block. Special-shaped cylindrical strips are respectively slidably arranged inside both ends of the third cylinder. Fourth cylinders are respectively fixedly connected to the outer sides of the special-shaped cylindrical strips. The fourth cylinders are respectively rotatably arranged in the middle of the second rectangular strip. The end of the special-shaped cylindrical strip is connected to the first cylindrical rod through a transmission component.

[0015] Preferably, the transmission component includes a second sprocket fixedly connected to the end of the special-shaped cylindrical strip, a first sprocket fixedly connected to the end of the first cylindrical rod, and the second sprocket and the first sprocket are driven by a chain.

[0016] Preferably, sealing strips are respectively installed on the opposite side edges of the detection cover. Sixth rings are respectively fixedly connected to the outer sides of the opposite sides of the detection cover. A plurality of pointed blocks are fixedly connected to the lower side of the upper sixth ring. Grooves are respectively formed at the positions corresponding to the pointed blocks on the upper end of the lower sixth ring. The pointed blocks can be inserted into the grooves.

[0017] The beneficial effects of the present invention are as follows: 1. For a textile air permeability detection device of the present invention, the first ring drives the fifth ring to drive the placement of the textile fabric in the middle to be repeatedly stretched. At the same time, the fifth ring is driven to rotate on one side of the first ring to cause friction on the surface of the textile fabric. Subsequently, the air pump is started again to perform air permeability testing on the textile fabric after being stretched and rubbed, which can simulate the state of the textile after being repeatedly stretched and rubbed during long-term use. Subsequently, the air permeability is detected, so as to judge the thermal insulation effect of the textile after being stretched and rubbed during long-term use, and a more comprehensive test result can be obtained.

[0018] 2. For a textile air permeability detection device of the present invention, by driving the fifth ring to rotate to drive the cross block to rotate, the centripetal force generated when the cross block rotates drives the rectangular slide to slide outwards in the rectangular groove. The cross block and the rectangular slide drive a plurality of convex blocks to rub the surface of the textile fabric, and the friction area of the textile fabric is larger. By controlling the rotation speed of the fifth ring, the friction degree of the textile fabric can be controlled. Brief Description of the Drawings

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a perspective view of the first embodiment of the present invention; Figure 2 is a schematic diagram of the position of the textile fabric; Figure 3 is a schematic cross-sectional view of the rectangular plate; Figure 4 is a schematic cross-sectional view of the detection cover; Figure 5 is a schematic diagram of the structure of the rectangular slide bar; Figure 6 is a schematic diagram of the position of the second cylindrical rod; Figure 7 is a schematic diagram of the structure of the transmission component; Figure 8 is a schematic cross-sectional view of the second rectangular bar; Figure 9 is a schematic cross-sectional view of the sixth ring; In the figure: 1, detection cover; 11, rectangular plate; 111, telescopic rod; 112, runner; 114, second rectangular bar; 12, first ring; 121, third rectangular bar; 122, second rectangular cylinder; 123, fourth rectangular bar; 124, second ring; 1241, first rectangular block; 1242, third ring; 125, second rectangular block; 1251, fourth ring; 126, fifth rectangular bar; 127, third rectangular block; 13, fifth ring; 131, cross block; 1311, rectangular groove; 1312, rectangular slide bar; 1313, spring; 1314, convex block; 132, first cylindrical rod; 133, first sprocket; 134, chain; 14, sealing strip; 15, sixth ring; 151, pointed block; 152, groove; 16, round hole; 161, connecting pipe; 162, air pump; 17, support column; 18, slide rail; 181, slider; 2, textile fabric; 3, second cylindrical rod; 31, connecting block; 32, first cylinder; 321, special-shaped cylinder; 322, lead screw; 323, second cylinder; 33, third cylinder; 331, special-shaped cylindrical strip; 332, fourth cylinder; 333, second sprocket; 4, bottom plate. Detailed Description of the Invention

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] Embodiment 1: As shown in Figures 1 - 5As shown in the figure, a textile air permeability detection device according to an embodiment of the present invention includes two detection covers 1. A textile fabric 2 is placed between the two detection covers 1, and the detection covers 1 clamp the textile fabric 2. Circular holes 16 are respectively formed at one ends of the detection covers 1 away from the textile fabric 2. Connecting pipes 161 are fixedly connected to the lower ends of the detection covers 1 corresponding to the positions of the circular holes 16. Air pumps 162 are installed on the connecting pipes 161. An air velocity sensor is installed inside the upper detection cover 1. A stretching component is arranged inside the detection cover 1. The stretching component includes a first ring 12 slidably arranged inside the detection cover 1, and fifth rings 13 are respectively rotatably arranged on one side of the first ring 12 close to the textile fabric 2.

[0023] Specifically, when detecting the air permeability of a textile with a heat preservation function, the prior art cannot simulate the air permeability of the textile after being rubbed, so as to judge the heat preservation effect of the textile after being rubbed after long-term use. The heat preservation test result of the textile is relatively single. When using this detection device, place the textile fabric 2 between the two detection covers 1, and then drive the two detection covers 1 to approach each other until the textile fabric 2 is clamped, and at the same time drive the fifth rings 13 to closely adhere to the upper and lower ends of the textile fabric 2. Then start the air pump 162 to blow air into the interior of the lower detection cover 1. The air velocity sensor installed inside the upper detection cover 1 detects the speed of the air flow passing through the textile fabric 2, calculates the difference value, and obtains the air permeability of the textile fabric 2, and tests the air permeability stability of the textile fabric 2. Then drive the first ring 12 to move in the same direction inside the detection cover 1. The first ring 12 drives the fifth rings 13 to drive the placed textile fabric 2 in the middle to be repeatedly stretched through the fifth rings 13. At the same time, drive the fifth rings 13 to rotate on one side of the first ring 12 to cause friction on the surface of the textile fabric 2. Then start the air pump 162 again to test the air permeability of the textile fabric 2 after being stretched and rubbed, which can simulate the state of the textile after being repeatedly stretched and rubbed during long-term use, and then conduct air permeability detection, so as to judge the heat preservation effect of the textile after being stretched and rubbed after long-term use, and a more comprehensive test result can be obtained.

[0024] As Figure 4 As shown in the figure, a plurality of third rectangular strips 121 are respectively rotatably arranged around the first ring 12. The third rectangular strips 121 are respectively slidably arranged inside second rectangular cylinders 122. The second rectangular cylinders 122 are respectively rotatably arranged around the inner walls of the detection covers 1. Fourth rectangular strips 123 are respectively rotatably connected to one side of the second rectangular cylinders 122. The fourth rectangular strips 123 are respectively slidably arranged in the middle of the detection covers 1.

[0025] Specifically, when performing a tensile friction test on the textile fabric 2 clamped in the middle of the detection cover 1, by driving the fourth rectangular strip 123 to slide in the middle of the detection cover 1, the fourth rectangular strip 123 drives the third rectangular strip 121 to rotate through the second rectangular cylinder 122. The third rectangular strip 121 drives the fifth ring 13 to move up and down in the detection cover 1 through the first ring 12, so as to pull the textile fabric 2. By driving the fifth ring 13 to rotate, the surface of the textile fabric 2 can be rubbed, and various states after the long-term use of the textile fabric 2 can be simulated.

[0026] As Figure 5 shown, a cross block 131 is fixedly connected to the lower end of the fifth ring 13. Rectangular grooves 1311 are respectively formed at the four corners of the lower end of the cross block 131. Rectangular sliding strips 1312 are respectively slidably connected in the rectangular grooves 1311. The rectangular sliding strips 1312 are fixedly connected to one side of the interior of the rectangular grooves 1311 through springs 1313. A number of convex blocks 1314 are respectively fixedly connected to the cross block 131 and the rectangular sliding strips 1312 on one side of the textile fabric 2.

[0027] Specifically, when performing a friction test on the textile fabric 2, by driving the fifth ring 13 to rotate, the cross block 131 is driven to rotate. The centripetal force generated when the cross block 131 rotates drives the rectangular sliding strips 1312 to slide outwards in the rectangular grooves 1311. The cross block 131 and the rectangular sliding strips 1312 drive a number of convex blocks 1314 to rub the surface of the textile fabric 2, with a larger friction area for the textile fabric 2. By controlling the rotation speed of the fifth ring 13, the friction degree on the textile fabric 2 can be controlled.

[0028] As Figures 4 - 5 shown, second rings 124 are respectively and commonly fixedly connected to one end of the fourth rectangular strip 123 away from the textile fabric 2. A third ring 1242 is fixedly connected to the middle of the second rings 124 through a first rectangular block 1241. A first cylindrical rod 132 is fixedly connected to one side of the cross block 131 away from the textile fabric 2. A fourth ring 1251 is fixedly connected to the middle of the first ring 12 through a second rectangular block 125. The first cylindrical rod 132 slidably penetrates through the middle of the detection cover 1, and the first cylindrical rod 132 is rotatably arranged in the middle of the fourth ring 1251 and the third ring 1242.

[0029] Specifically, by driving the two second rings 124 to move in the same direction, the second rings 124 drive the first ring 12 to stretch the textile fabric 2 through the fourth rectangular strip 123, and at the same time drive the first cylindrical rod 132 to slide up and down in the middle of the detection cover 1. Subsequently, the first cylindrical rod 132 is driven to rotate in the middle of the third ring 1242 and the fourth ring 1251. The first cylindrical rod 132 drives the cross block 131 and the rectangular sliding strips 1312 to rotate to cause friction on the surface of the textile fabric 2.

[0030] As Figure 3As shown in the figure, a rectangular plate 11 is fixedly connected to the outer side of the middle part of the detection cover 1. Flattening components are respectively arranged on the opposite sides of the rectangular plate 11. The flattening component includes a telescopic rod 111 rotatably arranged on the outer side of the detection cover 1. A runner 112 is rotatably arranged at one end of the telescopic rod 111 close to the textile fabric 2 through a damper.

[0031] Specifically, when driving the two detection covers 1 to approach each other, the two rectangular plates 11 are driven to approach each other. The rectangular plate 11 drives the runners 112 to approach each other through the telescopic rod 111 until the upper and lower runners 112 clamp the edge of the textile fabric 2. At this time, the detection cover 1 has not clamped the textile fabric 2 yet. Subsequently, continuously drive the two detection covers 1 to approach each other. The runner 112 drives the edge of the textile fabric 2 to be pulled outward. At the same time, the telescopic rod 111 contracts, and the textile fabric 2 can be flattened. Then, the air permeability test is carried out to make the test result more accurate.

[0032] As Figure 1 shown in the figure, the rectangular plate 11 at the lower end is fixedly connected to a bottom plate 4 through a support column 17. Slide rails 18 are respectively fixedly connected to both sides of the upper end of the bottom plate 4. Sliders 181 are respectively slidably arranged on one side of the slide rails 18. Both sides of the rectangular plate 11 at the upper end are fixedly connected to the sliders 181.

[0033] Specifically, by driving the slider 181 to slide on one side of the slide rail 18, the slider 181 drives the upper rectangular plate 11 to slide downward. The rectangular plate 11 drives the detection cover 1 to slide downward to clamp the textile fabric 2 in the middle, and then the detection is carried out.

[0034] As Figures 6 - 8 shown in the figure, a second cylindrical rod 3 is fixedly connected to one side of the upper end of the bottom plate 4. One side of the rectangular plate 11 is slidably arranged on the outer side of the second cylindrical rod 3 through a second rectangular strip 114. Fifth rectangular strips 126 are respectively fixedly connected to one side of the second ring 124. The fifth rectangular strips 126 are slidably arranged on the outer side of the second cylindrical rod 3. A connecting block 31 is fixedly connected to the middle of the second cylindrical rod 3. A first cylinder 32 is rotatably connected to the middle of the connecting block 31. Special-shaped cylinders 321 are respectively slidably arranged inside both ends of the first cylinder 32. Third rectangular blocks 127 are respectively fixedly connected to one side of the fifth rectangular strips 126. Lead screws 322 are respectively rotatably arranged on the opposite sides of the third rectangular blocks 127. The lead screws 322 are respectively threadedly connected to the inside of the special-shaped cylinders 321. Second cylinders 323 are respectively fixedly connected to the outer sides of the special-shaped cylinders 321. The second cylinders 323 are respectively rotatably arranged in the middle of the second rectangular strip 114.

[0035] Specifically, when the driving rectangular plates 11 approach each other, the second rectangular strip 114 slides on the outside of the second cylindrical rod 3 at the same time. The second rectangular strip 114 drives the special-shaped cylinder 321 to slide in the first cylinder 32 through the second cylinder 323. The special-shaped cylinder 321 drives the third rectangular block 127 to move through the lead screw 322. The third rectangular block 127 drives the second ring 124 to move through the fifth rectangular strip 126, so that the second ring 124 moves synchronously with the rectangular plate 11. By driving the first cylinder 32 to rotate, the special-shaped cylinders 321 at both ends are driven to rotate synchronously. The special-shaped cylinder 321 drives the lead screws 322 at both ends to rotate in the same direction, so that the lead screw 322 drives the third rectangular block 127 to move in the same direction. The third rectangular block 127 drives the second ring 124 to move in the same direction through the fifth rectangular strip 126. The second ring 124 drives the two first rings 12 to move in the same direction, so that the two first rings 12 can move synchronously to stretch the textile fabric 2.

[0036] As Figure 8 shown, a third cylinder 33 is rotatably arranged in the middle of the connecting block 31. Special-shaped cylindrical bars 331 are slidably arranged inside both ends of the third cylinder 33. Fourth cylinders 332 are fixedly connected to the outside of the special-shaped cylindrical bars 331 respectively. The fourth cylinders 332 are respectively rotatably arranged in the middle of the second rectangular strip 114. The ends of the special-shaped cylindrical bars 331 are connected to the first cylindrical rod 132 through a transmission assembly.

[0037] Specifically, by driving the third cylinder 33 to rotate, the special-shaped cylindrical bars 331 at both ends are driven to rotate synchronously. The ends of the two special-shaped cylindrical bars 331 drive the first cylindrical rod 132 to rotate through the transmission assembly at the same time. The first cylindrical rod 132 drives the rectangular sliding strip 1312 to rotate through the cross block 131 to cause friction on both sides of the textile fabric 2.

[0038] As Figure 8 shown, the transmission assembly includes a second sprocket 333 fixedly connected to the end of the special-shaped cylindrical bar 331. A first sprocket 133 is fixedly connected to the end of the first cylindrical rod 132. The second sprocket 333 and the first sprocket 133 are driven by a chain 134.

[0039] Specifically, by driving the third cylinder 33 to rotate, the special-shaped cylindrical bars 331 at both ends are driven to rotate. The special-shaped cylindrical bar 331 drives the second sprocket 333 to rotate. The second sprocket 333 drives the first sprocket 133 to rotate through the chain 134. The first sprocket 133 drives the first cylindrical rod 132 to rotate.

[0040] Embodiment 2: As Figure 9As shown, compared with the first comparative example, another implementation manner of the present invention is as follows: Sealing strips 14 are respectively installed on the opposite side edges of the detection cover 1, and sixth rings 15 are respectively fixedly connected to the outer sides of the opposite sides of the detection cover 1. A plurality of pointed blocks 151 are fixedly connected to the lower side of the sixth ring 15 at the upper end, and grooves 152 are respectively formed at the positions corresponding to the pointed blocks 151 on the upper end of the sixth ring 15 at the lower end. The pointed blocks 151 can be inserted into the grooves 152.

[0041] Specifically, when driving the two detection covers 1 to approach each other, the side of the detection cover 1 in contact with the textile fabric 2 is provided with a sealing strip 14 to prevent air leakage during the air permeability test. When the detection covers 1 approach each other, the two sixth rings 15 are simultaneously driven to approach each other. The sixth ring 15 at the upper end drives a plurality of pointed blocks 151 to insert the edge of the textile fabric 2 into the grooves 152 to fix the textile fabric 2 and prevent the textile fabric 2 from falling off during the test.

[0042] Working principle: During use, the textile fabric 2 is placed between the two detection covers 1. By driving the slider 181 to slide on one side of the slide rail 18, the slider 181 drives the rectangular plate 11 at the upper end to slide downward. The rectangular plate 11 drives the two detection covers 1 to approach each other, and at the same time drives the fifth rings 13 to closely adhere to the upper and lower ends of the textile fabric 2. At the same time, the rectangular plate 11 drives the rotating wheels 112 to approach each other through the telescopic rods 111 until the upper and lower rotating wheels 112 clamp the edge of the textile fabric 2. At this time, the detection covers 1 have not yet clamped the textile fabric 2. Subsequently, continuously driving the two detection covers 1 to approach each other, the rotating wheels 112 drive the edge of the textile fabric 2 to be pulled outward, and at the same time the telescopic rods 111 contract to flatten the textile fabric 2. The side of the detection cover 1 in contact with the textile fabric 2 is provided with a sealing strip 14 to prevent air leakage during the air permeability test. When the detection covers 1 approach each other, the two sixth rings 15 are simultaneously driven to approach each other. The sixth ring 15 at the upper end drives a plurality of pointed blocks 151 to insert the edge of the textile fabric 2 into the grooves 152 to fix the textile fabric 2; When the driving rectangular plates 11 approach each other, at the same time, the second rectangular strip 114 slides outside the second cylindrical rod 3. The second rectangular strip 114 drives the special-shaped cylinder 321 to slide inside the first cylinder 32 through the second cylinder 323. The special-shaped cylinder 321 drives the third rectangular block 127 to move through the lead screw 322. The third rectangular block 127 drives the second ring 124 to move through the fifth rectangular strip 126, so that the second ring 124 moves synchronously with the rectangular plate 11. By driving the first cylinder 32 to rotate, the special-shaped cylinders 321 at both ends rotate synchronously. The special-shaped cylinder 321 drives the lead screws 322 at both ends to rotate in the same direction, so that the lead screws 322 drive the third rectangular block 127 to move in the same direction. The third rectangular block 127 drives the second ring 124 to move in the same direction through the fifth rectangular strip 126. The second ring 124 drives the two first rings 12 to move in the same direction, enabling the two first rings 12 to move synchronously and stretching the textile fabric 2. By driving the third cylinder 33 to rotate, the special-shaped cylindrical bars 331 at both ends rotate. The special-shaped cylindrical bars 331 drive the second sprocket 333 to rotate. The second sprocket 333 drives the first sprocket 133 to rotate through the chain 134. The first sprocket 133 drives the first cylindrical rod 132 to rotate. The first cylindrical rod 132 drives the rectangular sliding strip 1312 to rotate through the cross block 131, causing friction on both sides of the textile fabric 2.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A textile air permeability detection device, comprising two detection covers (1), a textile fabric (2) is placed between the two detection covers (1), the detection covers (1) clamp the textile fabric (2), circular holes (16) are respectively formed at one ends of the detection covers (1) away from the textile fabric (2), connecting pipes (161) are respectively fixedly connected to the lower ends of the detection covers (1) at the lower end corresponding to the positions of the circular holes (16), air pumps (162) are installed on the connecting pipes (161), a wind speed sensor is installed inside the detection cover (1) at the upper end, and a stretching assembly is arranged inside the detection cover (1), and is characterized in that: The stretching component includes a first ring (12) slidably arranged inside a detection cover (1), and a fifth ring (13) is rotatably arranged on one side of the first ring (12) close to the textile fabric (2).

2. The textile air permeability detection device according to claim 1, characterized in that: A number of third rectangular bars (121) are rotatably arranged around the first ring (12). The third rectangular bars (121) are respectively slidably arranged inside second rectangular cylinders (122). The second rectangular cylinders (122) are respectively rotatably arranged around the inner wall of the detection cover (1). One side of each second rectangular cylinder (122) is rotatably connected to a fourth rectangular bar (123), and the fourth rectangular bars (123) are respectively slidably arranged in the middle of the detection cover (1).

3. The textile air permeability detection device according to claim 2, characterized in that: A cross block (131) is fixedly connected to the lower end of the fifth ring (13). Rectangular grooves (1311) are respectively formed at the four corners of the lower end of the cross block (131). Rectangular sliding bars (1312) are respectively slidably connected inside the rectangular grooves (1311). The rectangular sliding bars (1312) are fixedly connected to one side inside the rectangular grooves (1311) through springs (1313). A number of bumps (1314) are fixedly connected to one side of the cross block (131) and the rectangular sliding bars (1312) located on the side of the textile fabric (2).

4. The textile air permeability detection device according to claim 3, characterized in that: The ends of the fourth rectangular bars (123) far from the textile fabric (2) are fixedly connected to a second ring (124) together. A third ring (1242) is fixedly connected to the middle of the second ring (124) through a first rectangular block (1241). A first cylindrical rod (132) is fixedly connected to one side of the cross block (131) far from the textile fabric (2). A fourth ring (1251) is fixedly connected to the middle of the first ring (12) through a second rectangular block (125). The first cylindrical rod (132) slidably penetrates through the middle of the detection cover (1), and the first cylindrical rod (132) is rotatably arranged in the middle of the fourth ring (1251) and the third ring (1242).

5. The textile air permeability detection device according to claim 4, wherein: A rectangular plate (11) is fixedly connected to the outside of the middle of the detection cover (1). Flattening components are respectively arranged on opposite sides of the rectangular plate (11). The flattening component includes a telescopic rod (111) rotatably arranged outside the detection cover (1). A runner (112) is rotatably connected to one end of the telescopic rod (111) close to the textile fabric (2) through a damper.

6. The textile air permeability detection device according to claim 5, characterized in that: The lower rectangular plate (11) is fixedly connected to a bottom plate (4) through a support column (17). Slide rails (18) are respectively fixedly connected to both sides of the upper end of the bottom plate (4). Sliders (181) are respectively slidably arranged on one side of the slide rails (18). Both sides of the upper rectangular plate (11) are fixedly connected to the sliders (181).

7. The textile air permeability detection device according to claim 6, wherein: On one side of the upper end of the bottom plate (4), a second cylindrical rod (3) is fixedly connected. On one side of the rectangular plate (11), it is slidably arranged on the outside of the second cylindrical rod (3) through a second rectangular strip (114). On one side of the second ring (124), fifth rectangular strips (126) are respectively fixedly connected. The fifth rectangular strips (126) are slidably arranged on the outside of the second cylindrical rod (3). In the middle of the second cylindrical rod (3), a connecting block (31) is fixedly connected. In the middle of the connecting block (31), a first cylinder (32) is rotatably connected. Inside the two ends of the first cylinder (32), special-shaped cylinders (321) are respectively slidably arranged. On one side of the fifth rectangular strips (126), third rectangular blocks (127) are respectively fixedly connected. On the opposite sides of the third rectangular blocks (127), lead screws (322) are respectively rotatably arranged. The lead screws (322) are respectively in threaded connection with the inside of the special-shaped cylinders (321). On the outside of the special-shaped cylinders (321), second cylinders (323) are respectively fixedly connected. The second cylinders (323) are respectively rotatably arranged in the middle of the second rectangular strip (114).

8. The textile air permeability detection device according to claim 7, characterized in that: In the middle of the connecting block (31), a third cylinder (33) is rotatably arranged. Inside the two ends of the third cylinder (33), special-shaped cylindrical bars (331) are respectively slidably arranged. On the outside of the special-shaped cylindrical bars (331), fourth cylinders (332) are respectively fixedly connected. The fourth cylinders (332) are respectively rotatably arranged in the middle of the second rectangular strip (114). The ends of the special-shaped cylindrical bars (331) are connected to the first cylindrical rod (132) through a transmission assembly.

9. The textile air permeability detection device according to claim 8, characterized in that: The transmission assembly includes a second sprocket (333) fixedly connected to the end of the special-shaped cylindrical bar (331). At the end of the first cylindrical rod (132), a first sprocket (133) is fixedly connected. Between the second sprocket (333) and the first sprocket (133), they are driven by a chain (134).

10. The textile air permeability detection device according to claim 1, characterized in that: On the edges of the opposite sides of the detection cover (1), sealing strips (14) are respectively installed. On the outside of the opposite sides of the detection cover (1), sixth rings (15) are respectively fixedly connected. On the lower side of the upper sixth ring (15), a number of pointed blocks (151) are fixedly connected. At the positions corresponding to the pointed blocks (151) on the upper end of the lower sixth ring (15), grooves (152) are respectively opened. The pointed blocks (151) can be inserted into the inside of the grooves (152).

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