A device for testing the air permeability of textile materials

Abstract

This invention relates to the field of fabric air permeability testing technology, and more particularly to a device for testing the air permeability of textile materials. The device includes a worktable, with a pressing assembly movably mounted on the top of the worktable. The pressing assembly includes an air hood and a pressure rod. An electric actuator is fixedly mounted on the top of the worktable, with its output end fixedly connected to the top of the air hood. The pressure rod is movably inserted into the interior of the air hood. By having telescopic pads contact the fabric and then retract sequentially, wrinkles in the fabric between the telescopic pads and the support rod are moved outwards and eliminated, preventing wrinkles from remaining in the fabric held by the pressure rod and support rod. A rotating pad and the fabric rotate with the support rod, eliminating wrinkles on the fabric surface. Simultaneously, the rotating pad and the fabric rotate at the same speed, preventing wrinkles between the two rotating pads when the rotating pad holds the fabric. The fabric shakes during rotation, cleaning dust and stains adhering to the fabric surface, thus improving the accuracy of the air permeability test.

Description

Technical Field

[0001] This invention relates to the field of fabric air permeability testing technology, and in particular to a device for testing the air permeability performance of textile materials. Background Technology

[0002] As a traditional industry with a long history, the textile industry has seen increasing demands for textile products due to continuous technological advancements. In the past, people's needs for textile products mainly focused on basic functions such as warmth and durability. However, with the improvement of living standards, the demand for comfort has become increasingly prominent. Well-breathable textile products can keep the skin dry, reduce stuffiness and dampness, lower the probability of skin diseases, and improve wearing comfort. Existing breathability testing devices, such as the textile breathability performance testing device in publication number CN116559054A, use four contact parts to move and straighten the textile in the horizontal and vertical directions, so that the textile is completely flat before being pressed. However, different textile materials are different. When the textile is relatively soft, the four contact parts will overstretch the textile, causing wrinkles to appear on the diagonal of the contact parts after stretching. At the same time, the pores at the four corners of the textile are too large, affecting the accuracy of breathability testing. Furthermore, as the pores of the textile increase, dust and stains on the surface of the textile can penetrate into the pores during the testing process, further affecting the accuracy of breathability testing. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the background art by providing a device for testing the air permeability of textile materials.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A device for testing the air permeability of textile materials includes a worktable, a pressing assembly movably mounted on the top of the worktable, the pressing assembly including an air hood and a pressure rod, an electric push rod fixedly mounted on the top of the worktable, the output end of the electric push rod being fixedly connected to the top of the air hood, the pressure rod being movably inserted into the interior of the air hood, and a plurality of evenly distributed pins integrally formed on the bottom of the pressure rod, the pins being located at the eccentric position at the bottom of the pressure rod;

[0006] The workbench is equipped with a drive assembly, which includes a mounting base and a support rod. The mounting base is fixedly installed inside the workbench, and the support rod is movably inserted into the mounting base. The top of the support rod has several evenly distributed pin grooves, which correspond to the pins.

[0007] The bottom of the air hood and the top of the mounting base are both rotatably mounted with rotating pads. The rotating pads have an integrally formed support frame inside, and the pressure rod and the support rod are slidably inserted into the two support frames respectively.

[0008] In the above-mentioned air permeability testing device for textile materials, a spring 1 is provided between the pressure rod and the support frame, and a spring 2 is provided between the support rod and the support frame. The elastic force of the spring 2 is less than that of the spring 1.

[0009] In the above-mentioned air permeability testing device for textile materials, a telescopic pad is slidably installed at the bottom of the pressure rod, and a spring three is provided between the telescopic pad and the pressure rod. The pin passes through the telescopic pad and is slidably inserted into the side wall of the telescopic pad. The elastic force of the spring three is less than that of the spring two.

[0010] In the above-mentioned air permeability testing device for textile materials, the air hood has an integrally formed sliding cylinder inside, the pressure rod is movably inserted into the inside of the sliding cylinder, the sliding cylinder has an integrally formed protrusion 1 and protrusion 2, and a spring top block is slidably installed on the side wall of the pressure rod, the spring top block being slidably connected to the side walls of protrusion 1 and protrusion 2.

[0011] In the above-mentioned air permeability testing device for textile materials, the first and second convex strips are spiral-shaped. The spiral direction of the first convex strip is the same as the rotation direction of the pressure rod, and the spiral direction of the second convex strip is opposite to the rotation direction of the pressure rod. The distance between the highest points of the first and second convex strips is greater than the diameter of the spring top block.

[0012] In the above-mentioned air permeability testing device for textile materials, the side wall of the spring top block is provided with an inclined surface, and the inclined surface is in contact with the side wall of the second protrusion.

[0013] In the above-mentioned air permeability testing device for textile materials, a motor is fixedly installed inside the workbench, a gear is fixedly connected to the output end of the motor, a gear is fixedly connected to the bottom of the support rod, and the gear and the gear mesh with each other.

[0014] In the above-mentioned air permeability testing device for textile materials, an air pump is fixedly installed inside the workbench, an air pipe is fixedly connected to the output end of the air pump, the air pipe is fixedly connected to the side wall of the air hood, a placement plate is fixedly installed on the top of the workbench, and a rotating pad is rotatably installed on the inner side of the placement plate.

[0015] Compared with existing technologies, the advantages of this invention are:

[0016] 1. This invention utilizes the cooperation between the telescopic pads and the support rods to ensure that as the air hood moves the pressure rod and telescopic pads downwards, when the telescopic pads contact the fabric above the support rods, the telescopic pads contract sequentially starting from the central pad. This sequential contraction after contact with the fabric causes the wrinkles in the fabric between the telescopic pads and the support rods to move outwards and be eliminated, preventing wrinkles in the fabric held by the pressure rods and support rods from affecting the accuracy of air permeability testing.

[0017] 2. This invention utilizes the cooperation between the pressure rod and the support rod. After the ejector pin enters the needle groove, the support rod drives the pressure rod to rotate, causing the fabric between the support rod and the pressure rod, as well as the two rotating pads, to rotate. By having the fabric rotate with the support rod, wrinkles on the fabric surface are eliminated, preventing wrinkles from affecting the accuracy of air permeability testing. At the same time, the support rod and the pressure rod drive the two rotating pads to rotate, ensuring that the rotating pads and the fabric rotate at the same speed. This prevents wrinkles between the two rotating pads when they hold the fabric.

[0018] 3. This invention utilizes the cooperation between protruding strip one, protruding strip two, and the spring top block. After the spring top block and protruding strip one come into contact with each other, the support rod moves rapidly upward following the pressure rod. When the spring top block moves away from protruding strip one and comes into contact with protruding strip two, the pressure rod drives the support rod to move rapidly downward. Through the pressure rod and the support rod, the fabric moves up and down rapidly, causing the fabric to shake during rotation. This shaking cleans the dust and stains attached to the fabric surface, further improving the accuracy of air permeability testing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0023] Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle;

[0024] Figure 6 This is a disassembly diagram of the driving component in this invention;

[0025] Figure 7 This is a disassembly diagram of the pressing component in this invention;

[0026] Figure 8This is a schematic diagram of the structure of the spring top block in this invention;

[0027] Figure 9 This is a schematic diagram of the structure of the telescopic pad in this invention;

[0028] Figure 10 This is a cross-sectional view of the air hood in this invention.

[0029] In the diagram: 1. Workbench; 11. Placement plate; 121. Air pipe; 122. Electric actuator; 123. Air pump; 21. Air hood; 211. Pressure rod; 212. Slide cylinder; 213. Protrusion 1; 214. Protrusion 2; 215. Spring top block; 216. Spring 1; 217. Ejector pin; 218. Inclined surface; 22. Mounting base; 221. Support rod; 222. Gear 1; 223. Needle groove; 224. Spring 2; 23. Motor 1; 231. Rotating pad; 232. Gear 2; 233. Telescopic pad; 234. Spring 3; 235. Support frame. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Reference Figure 1 - Figure 10 As shown, a device for testing the air permeability of textile materials includes a workbench 1. A pressing component is movably installed on the top of the workbench 1. The pressing component includes an air hood 21 and a pressing rod 211. An electric push rod 122 is fixedly installed on the top of the workbench 1. The output end of the electric push rod 122 is fixedly connected to the top of the air hood 21. The pressing rod 211 is movably inserted into the interior of the air hood 21. Several evenly distributed ejector pins 217 are integrally formed on the bottom of the pressing rod 211. The ejector pins 217 are located at the eccentric part of the bottom of the pressing rod 211.

[0033] The workbench 1 is equipped with a drive assembly, which includes a mounting base 22 and a support rod 221. The mounting base 22 is fixedly installed inside the workbench 1, and the support rod 221 is movably inserted into the mounting base 22. The top of the support rod 221 is provided with several evenly distributed pin grooves 223, which correspond to the ejector pins 217.

[0034] Rotating pads 231 are rotatably mounted on the bottom of the air hood 21 and the top of the mounting base 22. A support frame 235 is integrally formed inside the rotating pad 231. The pressure rod 211 and the support rod 221 are slidably inserted into the two support frames 235 respectively.

[0035] like Figures 3-7 and Figure 9 As shown, a spring 216 is provided between the pressure rod 211 and the support frame 235, and a spring 224 is provided between the support rod 221 and the support frame 235. The elastic force of the spring 224 is less than that of the spring 216. A telescopic washer 233 is slidably installed at the bottom of the pressure rod 211. A spring 234 is provided between the telescopic washer 233 and the pressure rod 211. A pin 217 passes through the telescopic washer 233 and is slidably inserted into the side wall of the telescopic washer 233. The elastic force of the spring 234 is less than that of the spring 224.

[0036] During the downward movement of the air hood 21, which drives the pressure rod 211 and the telescopic pad 233, when the telescopic pad 233 contacts the fabric above the support rod 221, the telescopic pad 233 contracts sequentially starting from the central pad, compressing the spring 234. The sequential contraction of the telescopic pad 233 after contacting the fabric causes the wrinkles in the fabric between the telescopic pad 233 and the support rod 221 to move outwards and be eliminated, preventing wrinkles in the fabric held by the pressure rod 211 and the support rod 221 from affecting the accuracy of the air permeability test. After the telescopic pad 233 contracts, the pin 217 extends and pierces the fabric before entering the needle groove 223. As the air hood 21 continues to move downwards, the support rod 221 contracts, and the spring 224 stretches. When the side wall of the support rod 221 contacts the mounting base 22, the pressure rod 211 contracts towards the interior of the air hood 21 as the air hood 21 continues to move downwards, at which point the spring 216 stretches.

[0037] like Figure 2 and Figure 6 As shown, a motor 23 is fixedly installed inside the workbench 1. A gear 232 is fixedly connected to the output end of the motor 23. A gear 222 is fixedly connected to the bottom of the support rod 221. The gear 232 and the gear 222 mesh with each other.

[0038] When the ejector pin 217 enters the needle groove 223, the motor 23 starts and drives the gear 232 to rotate, causing the gear 222 to drive the support rod 221 to rotate. Through the connection between the ejector pin 217 and the needle groove 223 and the contact between the support rod 221 and the pressure rod 211, the support rod 221 drives the pressure rod 211 to rotate. At this time, the fabric between the support rod 221 and the pressure rod 211 and the two rotating pads 231 all rotate with the support rod 221. By rotating with the support rod 221, wrinkles on the fabric surface are eliminated, avoiding wrinkles from affecting the accuracy of the air permeability test. The support rod 221 and the pressure rod 211 drive the two rotating pads 231 to rotate, so that the rotating pads 231 and the fabric rotate at the same speed. When the two rotating pads 231 clamp the fabric, wrinkles between the two rotating pads 231 are avoided. When the two rotating pads 231 contact each other, the motor 23 stops.

[0039] like Figure 3 , Figure 7 and Figure 8 As shown, the air hood 21 has an integrally formed sliding cylinder 212 inside, and the pressure rod 211 is movably inserted into the inside of the sliding cylinder 212. The sliding cylinder 212 has an integrally formed protrusion 213 and a second protrusion 214 inside. A spring top block 215 is slidably installed on the side wall of the pressure rod 211. The spring top block 215 is slidably connected to the side wall of the first protrusion 213 and the second protrusion 214. The side wall of the spring top block 215 is provided with an inclined surface 218, and the inclined surface 218 is in contact with the side wall of the second protrusion 214.

[0040] like Figure 3 and Figure 10 As shown, convex strip 1 213 and convex strip 214 are spiral-shaped. The spiral direction of convex strip 1 213 is the same as the rotation direction of pressure rod 211, while the spiral direction of convex strip 214 is opposite to the rotation direction of pressure rod 211. The distance between the highest points of convex strip 1 213 and convex strip 214 is greater than the diameter of spring top block 215.

[0041] During the retraction of the pressure rod 211 into the air shroud 21, the pressure rod 211 drives the spring top block 215 to rotate on the inner wall of the slide cylinder 212. After the spring top block 215 and the first protrusion 213 come into contact with each other, the spring top block 215 slides along the upper surface of the first protrusion 213, causing the pressure rod 211 to move upward rapidly and stretch the first spring 216. At this time, the second spring 224 is released, causing the support rod 221 to move upward with the pressure rod 211. When the spring top block 215 moves away from the first protrusion 213, the first spring 216 returns to its original position, and the pressure rod 211 drives the support rod 221 downward. When the spring top block 215 moves, the inclined surface 218 of the side wall abuts against the second protrusion 214 and slides along the lower surface of the second protrusion 214, causing the pressure rod 211 to move downward quickly. When the support rod 221 abuts against the mounting base 22, the spring top block 215 retracts. When the spring top block 215 moves away from the second protrusion 214, the spring top block 215 extends. Through the pressure rod 211 and the support rod 221, the fabric moves up and down quickly, causing the fabric to shake during rotation. The shaking of the fabric cleans the dust and stains attached to the fabric surface, further improving the accuracy of the air permeability test.

[0042] Further reference Figure 3 and Figure 10 To explain, the heights of convex strip 1 213 and convex strip 214 are the same, and the pitch of convex strip 1 213 is less than the pitch of convex strip 214. This allows the pressure rod 211 to move rapidly downwards through the contact between spring 1 216 and convex strip 214 after the spring top block 215 contacts convex strip 214. The contact of convex strip 214 ensures that the downward movement speed of the pressure rod 211 remains constant, thus improving the fabric shaking effect. The heights of convex strip 1 213 and convex strip 214 are less than the height between the side wall of the support rod 221 and the mounting base 22.

[0043] like Figure 1 and Figure 2 As shown, an air pump 123 is fixedly installed inside the workbench 1. An air pipe 121 is fixedly connected to the output end of the air pump 123. The air pipe 121 is fixedly connected to the side wall of the air cover 21. A placement plate 11 is fixedly installed on the top of the workbench 1. A rotating pad 231 is rotatably installed on the inner side of the placement plate 11.

[0044] When the two rotating pads 231 come into contact with each other, the air pump 123 starts and exhausts gas into the air cover 21. The gas enters the interior of the mounting base 22 through the fabric and is detected by the detection element (not shown in the figure) inside the mounting base 22.

[0045] The working principle and usage of this invention are explained in detail below: After the fabric is placed above the placement plate 11, the electric actuator 122 is activated. The electric actuator 122 drives the air cover 21 to move downward, causing the pressure rod 211 and the telescopic pad 233 to move downward with the air cover 21. When the telescopic pad 233 touches the fabric above the support rod 221, the telescopic pad 233 contracts sequentially starting from the central pad, causing the wrinkles in the fabric between the telescopic pad 233 and the support rod 221 to move outward and be eliminated. This prevents wrinkles in the fabric held by the pressure rod 211 and the support rod 221 from affecting the accuracy of the air permeability test. After the telescopic pad 233 retracts, the ejector pin 217 extends and pierces the fabric, entering the needle groove 223. At this time, the motor 23 starts and drives the support rod 221 to rotate. Through the connection between the ejector pin 217 and the needle groove 223, and the contact between the support rod 221 and the pressure rod 211, the support rod 221 drives the pressure rod 211 to rotate. At this time, the fabric between the support rod 221 and the pressure rod 211, as well as the two rotating pads 231, all rotate with the support rod 221. By having the fabric rotate with the support rod 221, wrinkles on the fabric surface are eliminated, preventing wrinkles from affecting the accuracy of the air permeability test. 221 and pressure rod 211 drive the two rotating pads 231 to rotate, so that the rotating pads 231 and the fabric rotate at the same speed. This prevents wrinkles between the two rotating pads 231 when they clamp the fabric. As the air cover 21 continues to move downward, the support rod 221 retracts and abuts against the mounting base 22. At this time, the pressure rod 211 retracts into the air cover 21, causing the pressure rod 211 to drive the spring top block 215 to rotate on the inner wall of the slide cylinder 212. When the spring top block 215 and the protrusion 213 abut against each other, the support rod 221 moves upward quickly with the pressure rod 211. When the spring top block 215 moves away from the pressure rod 211, the support rod 221 moves upward quickly with the pressure rod 211. After the first protrusion 213 comes into contact with the second protrusion 214, the pressure rod 211 drives the support rod 221 to move downwards quickly. The pressure rod 211 and the support rod 221 drive the fabric to move up and down quickly, causing the fabric to shake during rotation. The shaking of the fabric cleans the dust and stains attached to the fabric surface, further improving the accuracy of the air permeability test. When the two rotating pads 231 come into contact with each other, the motor 23 is turned off, the air pump 123 is started, and exhaust is discharged into the air cover 21. The gas enters the interior of the mounting base 22 through the fabric and is detected by the detection element (not shown in the figure) inside the mounting base 22.

[0046] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the air permeability of textile materials, comprising a workbench (1), characterized in that: A pressing assembly is movably installed on the top of the workbench (1). The pressing assembly includes an air hood (21) and a pressing rod (211). An electric push rod (122) is fixedly installed on the top of the workbench (1). The output end of the electric push rod (122) is fixedly connected to the top of the air hood (21). The pressing rod (211) is movably inserted into the inside of the air hood (21). Several evenly distributed ejector pins (217) are integrally formed on the bottom of the pressing rod (211). The ejector pins (217) are located at the eccentric part of the bottom of the pressing rod (211). The workbench (1) is equipped with a drive assembly, which includes a mounting base (22) and a support rod (221). The mounting base (22) is fixedly installed inside the workbench (1), and the support rod (221) is movably inserted into the mounting base (22). The top of the support rod (221) is provided with several evenly distributed needle grooves (223), and the needle grooves (223) correspond to the ejector pins (217). The bottom of the air hood (21) and the top of the mounting base (22) are both rotatably mounted with rotating pads (231). The rotating pads (231) have an integrally formed support frame (235) inside. The pressure rod (211) and the support rod (221) are respectively slidably inserted into the inside of the two support frames (235). A spring (216) is provided between the pressure rod (211) and the support frame (235), and a spring (224) is provided between the support rod (221) and the support frame (235). The elastic force of the spring (224) is less than that of the spring (216). A telescopic pad (233) is slidably installed at the bottom of the pressure rod (211). A spring three (234) is provided between the telescopic pad (233) and the pressure rod (211). The pin (217) passes through the telescopic pad (233) and is slidably inserted into the side wall of the telescopic pad (233). The elastic force of the spring three (234) is less than that of the spring two (224).

2. The air permeability testing device for textile materials according to claim 1, characterized in that: The air hood (21) has an integrally formed sliding cylinder (212) inside. The pressure rod (211) is movably inserted into the inside of the sliding cylinder (212). The sliding cylinder (212) has integrally formed protrusions one (213) and two protrusions two (214). A spring top block (215) is slidably installed on the side wall of the pressure rod (211). The spring top block (215) is slidably connected to the side walls of protrusions one (213) and two protrusions two (214).

3. The air permeability testing device for textile materials according to claim 2, characterized in that: The first protrusion (213) and the second protrusion (214) are spiral-shaped. The direction of rotation of the first protrusion (213) is the same as that of the pressure rod (211), and the direction of rotation of the second protrusion (214) is opposite to that of the pressure rod (211). The distance between the highest points of the first protrusion (213) and the second protrusion (214) is greater than the diameter of the spring top block (215).

4. The air permeability testing device for textile materials according to claim 3, characterized in that: The side wall of the spring top block (215) is provided with an inclined surface (218), and the inclined surface (218) is in contact with the side wall of the second protrusion (214).

5. The air permeability testing device for textile materials according to claim 1, characterized in that: The workbench (1) is fixedly installed with a motor (23), and a gear (232) is fixedly connected to the output end of the motor (23). The bottom of the support rod (221) is fixedly connected with a gear (222), and the gear (232) meshes with the gear (222).

6. The air permeability testing device for textile materials according to claim 1, characterized in that: An air pump (123) is fixedly installed inside the workbench (1). An air pipe (121) is fixedly connected to the output end of the air pump (123). The air pipe (121) is fixedly connected to the side wall of the air hood (21). A placement plate (11) is fixedly installed on the top of the workbench (1). The rotating pad (231) is rotatably installed on the inner side of the placement plate (11).

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