A kind of luggage non-woven fabric lining water permeability and air permeability testing device

Abstract

The application discloses a kind of luggage nonwoven fabric lining water-permeable and air-permeable performance testing device, belong to luggage performance testing technical field, the application is by being set rotating crank, air pressure detection sensor two, air pressure detection sensor one, reciprocating slide, pressing head and mounting slide, the pressing head of reciprocating slide bottom continuously and the top of lower fabric sample is pressed and is contacted, it will not be caused to separate from reciprocating motion, in the process that pressing head periodicity presses fabric sample, air-permeable detection sleeve two forms relatively closed detection space, air pressure detection sensor two in the inside of air-permeable detection sleeve two of lifting plate bottom, with the air pressure detection sensor one in the top of base corresponding detection hole forms up and down corresponding detection combination, real-time capture the air pressure change in detection space, by comparing the air pressure data of two sensors, the gas permeation capacity of fabric sample under pressure state can be quantitatively analyzed, and air-permeable performance detection is completed.

Description

Technical Field

[0001] This invention relates to the field of luggage performance testing technology, specifically to a device for testing the water and air permeability performance of non-woven fabric linings for luggage. Background Technology

[0002] Non-woven fabrics, due to their lightweight, wear-resistant, environmentally friendly properties, and dual characteristics of being waterproof and breathable, have become the mainstream material for bag linings. Among them, polypropylene spunbond non-woven fabrics, with their excellent physical properties, are widely used in the production of various bag linings. The water and air permeability of non-woven fabric linings is a core indicator for evaluating their quality, directly affecting the comfort of use and the protection of internal items: good breathability can quickly dissipate moisture and sweat from inside the bag, preventing internal items from becoming damp and moldy; moderate water resistance can prevent external liquids from penetrating and damaging the items inside the bag, while also ensuring the durability of the lining itself. Therefore, accurate testing of the water and air permeability of non-woven fabric linings is a key aspect of quality control during bag production.

[0003] Existing testing devices for the water and air permeability performance of non-woven fabric linings in bags and luggage have limited functionality. Most devices can only perform air permeability or water permeability tests separately, making it difficult to perform multiple performance tests simultaneously on the same device. This results in a cumbersome and inefficient testing process, and multiple sample clamping can easily introduce errors. Air permeability tests are mostly limited to static environments, while in actual use, the lining fabric of bags and luggage is often subjected to external forces such as compression and bending. Existing devices lack the function of testing the air permeability performance of fabrics under pressure, resulting in low consistency between the test results and actual usage scenarios, and failing to fully reflect the true performance of the fabric.

[0004] Based on this, the present invention designs a device for testing the water permeability and air permeability of non-woven fabric linings for bags, in order to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device for testing the water and air permeability performance of non-woven fabric linings for bags, in order to solve the problems mentioned in the background art. The existing devices for testing the water and air permeability performance of non-woven fabric linings for bags have relatively limited functions. Most devices can only perform air permeability testing or water permeability testing separately, making it difficult to perform multiple performance tests simultaneously on the same device. This results in a cumbersome testing process, low efficiency, and the tendency to introduce errors due to multiple sample clamping. Furthermore, air permeability testing is mostly limited to static environments. However, in actual use, the lining fabric of bags is often subjected to external forces such as compression and bending. Existing devices lack the function of testing the air permeability performance of the fabric under pressure, resulting in low consistency between the test results and actual use scenarios, and failing to fully reflect the true performance of the fabric.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A device for testing the water permeability and air permeability of non-woven fabric lining for bags includes a base. An intermittent rotating pushing mechanism is located inside the base. A sample rotation and placement mechanism is rotatably mounted at the center of the top of the base via bearings. Sample clamping rings are respectively engaged on the four sides of the sample rotation and placement mechanism. Limiting slides are fixedly installed at the four corners of the top of the base. Each limiting slide includes four mounting rods, which are respectively fixedly connected to the four corners of the top of the base. A connecting top frame is fixedly connected to the top of each of the four mounting rods. A lifting plate is slidably connected through the surfaces of the four mounting rods, and the lifting plate covers the top of the sample rotation and placement mechanism. An auxiliary spring is sleeved on the surface of the mounting rods at the top of the lifting plate. An air permeability detection sleeve one, an air permeability detection sleeve two, and a water permeability detection sleeve are fixedly connected to the bottom of the lifting plate along the rotation direction of the sample rotation and placement mechanism. A second air pressure detection sensor is fixedly connected to the bottom of the lifting plate inside the first and second air permeability detection sleeves, respectively. An automatic drip nozzle is connected to the bottom of the lifting plate inside the water permeability detection sleeve.

[0008] As a further embodiment of the present invention, the base has a through mounting groove, and rectangular sliding grooves are provided through both sides of the base, which are connected to the mounting groove. The top of the base has a limiting sliding groove, which is formed by two regular concentric closed curves. One side of the limiting sliding groove is connected to a sliding groove protruding to the outer ring of the limiting sliding groove through a smooth curve. The top of the base has detection holes at the positions corresponding to the first air permeability detection sleeve, the second air permeability detection sleeve, and the third water permeability detection sleeve. A pressure detection sensor is fixedly connected inside the detection holes corresponding to the first and second air permeability detection sleeves on the top of the base. A humidity sensor is fixedly connected inside the detection hole corresponding to the water permeability detection sleeve on the top of the base.

[0009] As a further embodiment of the present invention, the intermittent rotational pushing mechanism includes a pushing motor, which is fixedly connected to the outer surface of the base at a position corresponding to the opening of the mounting slot. The output end of the pushing motor is fixedly connected to an active turntable, which corresponds to the position of the mounting slot. A connecting strip is rotatably connected to the top edge of the active turntable via a protrusion. The pushing turntable is rotatably mounted in the bottom of the mounting slot via a bearing. A linkage protrusion is fixedly connected to the top edge of the pushing turntable, and the linkage protrusion is rotatably connected to one end of the connecting strip. A pushing strip is slidably connected through the top of the linkage protrusion. The pushing strip is slidably connected through the inside of a rectangular slide groove. Both ends of the pushing strip pass through the rectangular slide groove and are rotatably connected to lifting top bars via protrusions. A pushing protrusion is rotatably connected to the top of the lifting top bars. Pushing slide grooves are respectively provided at the center positions of both sides of the lifting plate, and pushing protrusions are slidably connected through the inside of the pushing slide grooves.

[0010] As a further embodiment of the present invention, an intermittent turntable is rotatably mounted on one side of the push turntable at the bottom of the mounting groove via a bearing. A connecting column is fixedly connected to the top of the intermittent turntable, and a dial is fixedly connected to the top of the push turntable. Four arc-shaped sliding grooves are provided at equal angles on the outer circular surface of the intermittent turntable, and the arc-shaped sliding grooves are in close contact with the circular surface of the dial. An intermittent locking groove is provided on the outer circular surface of the intermittent turntable between two adjacent arc-shaped sliding grooves. A cylindrical pin is fixedly mounted on the edge of the push turntable on one side of the dial, and the cylindrical pin is engaged with the intermittent locking groove on the surface of the intermittent turntable.

[0011] As a further embodiment of the present invention, the sample rotation and placement mechanism includes a cross turntable, and the top of the connecting column is fixedly connected to the cross turntable. The four sides of the cross turntable are respectively provided with mounting slots. The two ends of the opening of the mounting slot are respectively slidably connected to movable slide rods. The surfaces of the movable slide rods located inside the openings of the mounting slots are respectively fitted with fixed springs. One end of the two movable slide rods is fixedly connected to an arc-shaped bracket. A movable protrusion is fixedly connected to the center of the bottom of the arc-shaped bracket, and the movable protrusion is slidably connected inside the limiting slide groove. A positioning protrusion is fixedly connected to the center of the top opening of the arc-shaped bracket. Fixed slots are symmetrically provided at both ends of the inner wall of the mounting slot.

[0012] As a further embodiment of the present invention, the sample clamping ring includes a clamping bottom ring, two rubber pressure rings are fixedly installed on the outer circular surface of the clamping bottom ring, a fabric sample is covered on the top of the clamping bottom ring, a clamping sleeve is provided on the outer side of the fabric sample and the clamping sleeve is sleeved on the top of the clamping bottom ring, two rubber pressure rings are fixedly installed on the inner wall of the clamping sleeve and the rubber pressure rings are pressed tightly against the rubber pressure rings, a positioning plate is fixedly connected to one side of the outer circular surface of the clamping sleeve and the positioning plate corresponds to the position of the positioning protrusion, and a fixing block is symmetrically fixedly installed on the side of the outer circular surface of the clamping sleeve away from the positioning plate and the fixing block is inserted into the fixing slot accordingly.

[0013] As a further embodiment of the present invention, a rotating crank is rotatably mounted on the bottom of the inner wall of the second breathability testing sleeve via a bearing. One end of the rotating crank extends through the second breathability testing sleeve to the outside of the second breathability testing sleeve and is fixedly connected to a linkage turntable. A connecting strip is rotatably mounted on the edge of the linkage turntable via a protrusion. A drive motor is fixedly connected to the top of the lifting plate at a position corresponding to the second breathability testing sleeve. A drive turntable is fixedly connected to the output end of the drive motor, and the edge of the drive turntable is rotatably connected to one end of the connecting strip via a protrusion. Limiting plates are symmetrically fixedly mounted on the two cranks of the rotating crank. A reciprocating slide is slidably connected between the two limiting plates. A pressing head is symmetrically fixedly mounted on the bottom of the reciprocating slide and presses against the top of the fabric sample. Mounting slides are symmetrically fixedly mounted on both sides of the inner wall of the second breathability testing sleeve, and the mounting slides are located at both ends of the reciprocating slide. The two ends of the reciprocating slide are slidably connected to the surface of the mounting slide. A compression spring is sleeved on the surface of the mounting slide at the top of the reciprocating slide.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the configuration of a rotating crank, a second air pressure sensor, a first air pressure sensor, a reciprocating slide, a pressing head, and a mounting slide, allows the sample clamping ring mounted on the cross turntable to rotate to the bottom of the second air pressure sensor after passing through the first air pressure sensor. This ensures the second air pressure sensor tightly covers the top of the sample clamping ring. The drive motor is then activated, causing the drive turntable to rotate at a constant speed. Connected by a connecting rod, this drives the linkage turntable to rotate synchronously, causing the rotating crank inside the second air pressure sensor to rotate around the bearing. Because the two cranks of the rotating crank are symmetrically fixed with limit plates, and the reciprocating slide is slidably connected to the two limit plates, the rotational motion of the rotating crank is converted into the up-and-down reciprocating motion of the reciprocating slide. The two ends of the reciprocating slide are slidably connected to the mounting slides on both sides of the inner wall of the second air pressure sensor. The mounting slide provides precise guidance for the movement of the reciprocating slide, preventing deviation. At the same time, the compression spring sleeved on the top of the mounting slide always applies downward elastic pressure to the reciprocating slide, ensuring that the pressing head at the bottom of the reciprocating slide is in continuous contact with the top of the fabric sample below, and will not disengage due to reciprocating motion. During the periodic pressing of the fabric sample by the pressing head, the second air permeability test sleeve forms a relatively closed test space. The second air pressure sensor located inside the second air permeability test sleeve at the bottom of the lifting plate, together with the first air pressure sensor in the corresponding test hole at the top of the base, form an upper and lower corresponding test combination, which captures the air pressure changes in the test space in real time. By comparing the air pressure data of the two sensors, the gas permeability of the fabric sample under pressure can be quantitatively analyzed, and the air permeability test can be completed. 2. This invention, by setting up a clamping bottom ring, a clamping collar, an arc-shaped card seat, a cross turntable, and a pushing protrusion, after the fabric sample is stretched and fixed between the clamping bottom ring and the clamping collar, the sample clamping ring is lifted and placed between the corresponding cross turntable and arc-shaped card seat, so that the positioning card plate and the positioning protrusion are engaged. The pushing motor is started, causing the intermittent turntable to drive the cross turntable to rotate intermittently on the top of the base. When the cross turntable rotates, the moving protrusion at the bottom of the arc-shaped card seat slides along the limiting groove of the base. When the mounting slot rotates to the inspection position... When in position, the moving protrusion slides into the raised groove of the limiting groove, pushing the arc-shaped card seat close to the mounting slot. With the elastic pressure of the fixed spring, the sample clamping ring is clamped until the sample clamping ring rotates to the bottom of the first air permeability test sleeve. The push bar pushes the lifting top bar to make the push protrusion slide inside the push groove, pulling the push groove to slide on the surface of the mounting slide rod until the first air permeability test sleeve, the second air permeability test sleeve, and the water permeability test sleeve are respectively attached to and covered on the top of the corresponding sample clamping ring, and the three performance tests of static air permeability, pressure air permeability, and water permeability are completed simultaneously. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the base of the present invention;

[0019] Figure 4 This is a cross-sectional view of the push motor and cross turntable of the present invention;

[0020] Figure 5 This is a schematic diagram of the connecting strip and the push turntable of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the clamping bottom ring and the clamping collar of the present invention;

[0022] Figure 7 This is a cross-sectional structural diagram of the connection between the top frame and the lifting plate of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the lifting plate and the air permeability detection sleeve of the present invention;

[0024] Figure 9This is a cross-sectional structural schematic diagram of the second air permeability detection sleeve and the mounting slide of the present invention;

[0025] Figure 10 This is a schematic diagram of the structure of the rotating crank and the linkage turntable of the present invention;

[0026] Figure 11 This is a schematic diagram of the push turntable and intermittent turntable of the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Base; 101. Mounting slot; 102. Rectangular slide groove; 103. Limiting slide groove; 104. Detection hole; 105. Air pressure sensor 1; 106. Humidity sensor; 2. Intermittent rotation pushing mechanism; 201. Pushing motor; 202. Active turntable; 203. Connecting bar; 204. Pushing turntable; 205. Intermittent turntable; 206. Connecting column; 207. Linkage protrusion; 208. Pushing bar; 209. Lifting top bar; 210. Pushing protrusion; 3. Sample rotation and placement mechanism; 301. Cross turntable; 302. Mounting slot; 303. Moving slide bar; 304. Fixing spring; 305. Arc-shaped bracket; 306. Moving protrusion; 307. Positioning protrusion; 308. Fixing slot; 4. Sample clamping ring; 4 01. Clamping bottom ring; 402. Rubber pressure ring one; 403. Fabric sample; 404. Clamping collar; 405. Rubber pressure ring two; 406. Positioning plate; 407. Fixing block; 5. Limiting slide; 501. Mounting slide rod; 502. Connecting top frame; 503. Auxiliary spring; 6. Lifting plate; 601. Pushing slide; 7. Air permeability detection sleeve one; 701. Air pressure detection sensor two; 8. Air permeability detection sleeve two; 801. Rotating crank; 802. Limiting plate; 803. Linkage turntable; 804. Connecting pull bar; 805. Drive motor; 806. Drive turntable; 807. Reciprocating slide; 808. Pressing head; 809. Mounting slide; 810. Compression spring; 9. Water permeability detection sleeve; 901. Automatic drip nozzle. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-11 The present invention provides a technical solution:

[0031] A device for testing the water permeability and air permeability of non-woven fabric lining for bags includes a base 1. An intermittent rotating pushing mechanism 2 is located inside the base 1. A sample rotating and placing mechanism 3 is rotatably mounted at the center of the top of the base 1 via bearings. Sample clamping rings 4 are respectively engaged on the four sides of the sample rotating and placing mechanism 3. Limiting slides 5 are fixedly installed at the four corners of the top of the base 1. Each limiting slide 5 includes four mounting slide rods 501, which are respectively fixedly connected to the four corners of the top of the base 1. A connecting top frame 502 is fixedly connected to the top of each of the four mounting slide rods 501. A lifting plate 6 is slidably connected through the surfaces of the four mounting slide rods 501, and the lifting plate 6 covers the top of the sample rotating and placing mechanism 3. An auxiliary spring 503 is sleeved on the surface of the mounting slide rods 501 at the top of the lifting plate 6. The bottom of the plate 6 is fixedly connected to one side of the sample rotation placement mechanism 3 along the rotation direction. Air permeability detection sleeve 1 7, air permeability detection sleeve 2 8 and water permeability detection sleeve 9 are fixedly connected to the bottom of the lifting plate 6. Air pressure detection sensor 2 701 is fixedly connected to the bottom of the lifting plate 6 at the position inside the air permeability detection sleeve 1 7 and the air permeability detection sleeve 2 8 respectively. An automatic drip nozzle 901 is connected to the bottom of the lifting plate 6 at the position inside the water permeability detection sleeve 9. The top of the base 1 is provided with detection holes 104 at the positions corresponding to the air permeability detection sleeve 1 7, the air permeability detection sleeve 2 8 and the water permeability detection sleeve 9 respectively. Air pressure detection sensor 1 105 is fixedly connected to the top of the base 1 at the detection hole 104 corresponding to the air permeability detection sleeve 1 7 and the air permeability detection sleeve 2 8. A humidity sensor 106 is fixedly connected to the top of the base 1 at the detection hole 104 corresponding to the water permeability detection sleeve 9.

[0032] During operation, after the fabric sample 403 is fixed on the sample clamping ring 4, it is installed on the cross turntable 301 of the sample rotation and placement mechanism 3. The intermittent rotation pushing mechanism 2 is started, which drives the cross turntable 301 to rotate intermittently, so that the samples arrive at the testing station in sequence. On the other hand, the pushing bar 208, the lifting top bar 209 and the pushing protrusion 210 push the lifting plate 6 to slide up and down along the mounting slide rod 501 of the limiting slide frame 5. When the lifting plate 6 descends, the bottom air permeability test sleeve 1 7, air permeability test sleeve 2 8 and water permeability test sleeve 9 are respectively attached to the top of the sample clamping ring 4 of the corresponding station to form a closed testing space. Among them, the air permeability test sleeve 1 7 and the air permeability test sleeve 2 8 capture air pressure changes through the corresponding air pressure detection sensors 1 105 and 701, and the water permeability test sleeve 9 drips water through the automatic drip nozzle 901, and detects the water permeability performance in conjunction with the humidity sensor 106.

[0033] As a further embodiment of the present invention, a mounting groove 101 is provided through the interior of the base 1, and rectangular sliding grooves 102 are provided through the sides of the base 1 respectively. The mounting groove 101 and the rectangular sliding groove 102 are arranged in a T-shape and perpendicularly connected to each other inside the base 1. At the same time, the mounting groove 101 and the rectangular sliding groove 102 penetrate the base 1, and the rectangular sliding groove 102 is connected to the mounting groove 101. A limiting sliding groove 103 is provided at the top of the base 1. The limiting sliding groove 103 is formed by two regular concentric closed curves, and one side of the limiting sliding groove 103 is connected to a sliding groove protruding to the outer circle of the limiting sliding groove 103 through a smooth curve.

[0034] The intermittent rotational pushing mechanism 2 includes a pushing motor 201, which is fixedly connected to the outer surface of the base 1 at a position corresponding to the opening of the mounting groove 101. The output end of the pushing motor 201 is fixedly connected to an active turntable 202, which corresponds to the position of the mounting groove 101. A connecting strip 203 is rotatably connected to the top edge of the active turntable 202 via a protrusion. A pushing turntable 204 is rotatably mounted in the bottom of the mounting groove 101 via a bearing. A linkage protrusion 207 is fixedly connected to the top edge of the pushing turntable 204, and the linkage protrusion 207 is rotatably connected to the other end of the connecting strip 203. A push bar 208 is slidably connected through the top of the linkage protrusion 207. The push bar 208 is slidably connected through the inside of the rectangular slide groove 102. The two ends of the push bar 208 pass through the rectangular slide groove 102 and are respectively rotatably connected to the lifting top bar 209 through the protrusion. The top of the lifting top bar 209 is rotatably connected to the push protrusion 210. Push slide grooves 601 are respectively provided at the center of both sides of the lifting plate 6, and the push protrusion 210 is slidably connected through the inside of the push slide groove 601.

[0035] During operation, after the push motor 201 starts, it drives the active turntable 202 to rotate. The protrusions on the edge of the active turntable 202 pull the linkage protrusion 207 on the top of the push turntable 204 through the connecting strip 203, so that the push turntable 204 reciprocates within the mounting groove 101. The push strip 208 on the top of the linkage protrusion 207 slides back and forth synchronously along the rectangular slide groove 102. The lifting top strips 209 at both ends of the push strip 208 swing accordingly, and the push protrusion 210 at its top rests in the push slide groove 6 of the lifting plate 6. 01 Sliding within, since the stroke of the push chute 601 is shorter than that of the rectangular chute 102, the push protrusion 210 moves to the end of the push chute 601 under the push of the lifting top bar 209, and then converts the reciprocating motion of the push bar 208 into the up-and-down sliding of the lifting plate 6 along the mounting slide bar 501. While driving the lifting plate 6 to rise and fall, it cooperates with the intermittent rotation of the sample rotation and placement mechanism 3 to realize the continuous cycle of "sample switching - detection sleeve fitting - detection completion - detection sleeve lifting - sample switching again".

[0036] As a further embodiment of the present invention, an intermittent turntable 205 is rotatably mounted on one side of the push turntable 204 at the bottom of the mounting groove 101 via a bearing, and a connecting column 206 is fixedly connected to the top of the intermittent turntable 205; a dial is fixedly connected to the top of the push turntable 204, and four arc-shaped sliding grooves are provided at equal angles on the outer circular surface of the intermittent turntable 205, and the arc-shaped sliding grooves are in close contact with the circular surface of the dial; an intermittent slot is provided on the outer circular surface of the intermittent turntable 205 in the middle of two adjacent arc-shaped sliding grooves; a cylindrical pin is fixedly mounted on the top of the push turntable 204 at the edge on one side of the dial, and the cylindrical pin is engaged with the intermittent slot on the surface of the intermittent turntable 205.

[0037] During operation, the dial at the bottom of the push turntable 204 rotates synchronously with the push turntable 204. The circular surface of the dial is always in close contact with the arc-shaped groove on the outer circular surface of the intermittent turntable 205. When the cylindrical pin on the edge of the push turntable 204 rotates to the intermittent slot position of the intermittent turntable 205, the cylindrical pin is engaged in the slot and drives the intermittent turntable 205 to rotate at a certain angle. When the cylindrical pin disengages from the intermittent slot and slides along the arc-shaped groove, the intermittent turntable 205 remains stationary. This converts the continuous rotation of the push turntable 204 into the intermittent rotation of the intermittent turntable 205. Then, through the connecting column 206, the cross turntable 301 is driven to rotate synchronously and intermittently, achieving precise intermittent positioning of the cross turntable 301. The rotation angle is fixed each time, ensuring that each sample clamping ring 4 can accurately stop directly below the air permeability test sleeve 1 7, the air permeability test sleeve 2 8, and the water permeability test sleeve 9, avoiding misalignment between the air permeability test sleeve 1 7, the air permeability test sleeve 2 8, and the water permeability test sleeve 9 and the sample, thus ensuring the effectiveness of the test.

[0038] As a further embodiment of the present invention, the sample rotation and placement mechanism 3 includes a cross turntable 301, and the top end of the connecting column 206 is fixedly connected to the cross turntable 301. The four sides of the cross turntable 301 are respectively provided with mounting slots 302. The two ends of the opening of the mounting slots 302 are respectively slidably connected to movable slide rods 303. The surfaces of the movable slide rods 303 located inside the openings of the mounting slots 302 are respectively fitted with fixed springs 304. One end of the two movable slide rods 303 is fixedly connected to an arc-shaped bracket 305. The center position of the bottom of the arc-shaped bracket 305 is fixedly connected to a movable protrusion 306, and the movable protrusion 306 is slidably connected inside the limiting slide groove 103.

[0039] During operation, the cross turntable 301 is driven to rotate intermittently by the intermittent turntable 205 through the connecting column 206. The movable protrusion 306 at the bottom of the arc-shaped card holder 305 slides along the limiting slide groove 103 of the base 1. When the mounting slot 302 rotates to a non-testing position, the movable protrusion 306 slides within the concentric closed curve of the limiting slide groove 103, causing the arc-shaped card holder 305 to move away from the mounting slot 302, facilitating the loading and unloading of the sample clamping ring 4. When the mounting slot 302 rotates to the testing position, the movable protrusion 306 slides into the raised slide groove on the outer ring of the limiting slide groove 103, pushing the arc-shaped card holder 305 to move inward toward the mounting slot 302 through the movable slide rod 303. With the elastic pressure of the fixing spring 304, the sample clamping ring 4 is clamped and fixed. At the same time, the fixing block 407 is inserted into the fixing slot 308 to achieve precise positioning of the sample and realize the automatic clamping and positioning of the sample clamping ring 4 in one integrated manner.

[0040] As a further embodiment of the present invention, the sample clamping ring 4 includes a clamping bottom ring 401. Two rubber pressure rings 402 are fixedly installed on the outer circumference of the clamping bottom ring 401. A fabric sample 403 is covered on the top of the clamping bottom ring 401. A clamping collar 404 is provided on the outer side of the fabric sample 403 and is sleeved on the top of the clamping bottom ring 401. Two rubber pressure rings 405 are fixedly installed on the inner wall of the clamping collar 404, and the rubber pressure rings 405 are pressed tightly against the rubber pressure rings 402. A positioning plate 406 is fixedly connected to one side of the outer circular surface of the clamping collar 404. A positioning protrusion 307 is fixedly connected to the center of the top opening of the arc-shaped card seat 305, and the positioning plate 406 and the positioning protrusion 307 are positioned correspondingly. A fixing block 407 is symmetrically fixedly installed on the side of the outer circular surface of the clamping collar 404 away from the positioning plate 406. Fixing slots 308 are symmetrically provided at both ends of the inner wall of the mounting slot 302, and the fixing block 407 and the fixing slot 308 are correspondingly inserted into each other.

[0041] During operation, the fabric sample 403 is laid flat on top of the clamping bottom ring 401, and the clamping sleeve 404 is fitted onto the clamping bottom ring 401. The rubber pressure ring 405 on the inner wall of the clamping sleeve 404 is pressed tightly against the rubber pressure ring 402 on the outer surface of the clamping bottom ring 401. The elastic pressure of the rubber pressure ring 402 and the rubber pressure ring 405 presses and fixes the edge of the fabric sample 403, thus straightening and flattening the fabric sample 403. The assembled sample clamping ring 4 is placed between the mounting slot 302 and the arc-shaped card seat 305 of the cross turntable 301, so that the positioning card plate 406 and the positioning protrusion 307 are engaged accordingly. The fixing block 407 is inserted into the fixing slot 308, thus completing the precise fixing of the sample clamping ring 4 and the sample rotation and placement mechanism 3.

[0042] As a further embodiment of the present invention, a rotating crank 801 is rotatably mounted on the bottom of the inner wall of the second air permeability testing sleeve 8 via a bearing. One end of the rotating crank 801 extends through the second air permeability testing sleeve 8 and is fixedly connected to a linkage turntable 803 on the outer side of the second air permeability testing sleeve 8. A connecting pull bar 804 is rotatably mounted on the edge of the linkage turntable 803 via a protrusion. A drive motor 805 is fixedly connected to the top of the lifting plate 6 at a position corresponding to the second air permeability testing sleeve 8. A drive turntable 806 is fixedly connected to the output end of the drive motor 805, and the edge of the drive turntable 806 is rotatably connected to one end of the connecting pull bar 804 via a protrusion. The two cranks of the rotating crank 801... Limiting plates 802 are symmetrically fixedly installed at the handle. A reciprocating slide 807 is slidably connected between the two limiting plates 802 and the rotating crank 801. A pressing head 808 is symmetrically fixedly installed at the bottom of the reciprocating slide 807 and presses against the top of the fabric sample 403. Mounting slides 809 are symmetrically fixedly installed on both sides of the inner wall of the air permeability detection sleeve 8. The mounting slides 809 are located at both ends of the reciprocating slide 807 and are slidably connected to the surface of the mounting slides 809. A compression spring 810 is sleeved on the surface of the mounting slide 809 at the top of the reciprocating slide 807.

[0043] During operation, when the sample clamping ring 4 rotates to the bottom of the second air permeability detection sleeve 8, and the second air permeability detection sleeve 8 is pressed against the top of the sample clamping ring 4 to form a closed detection space, the drive motor 805 starts and drives the drive turntable 806 to rotate. The drive turntable 806 pulls the linkage turntable 803 to rotate synchronously through the connecting pull bar 804, which in turn drives the rotating crank 801 inside the second air permeability detection sleeve 8 to rotate around the bearing. Since the two cranks of the rotating crank 801 are fixed with limit plates 802, and the reciprocating slide 807 is slidably connected between the two limit plates 802, the rotating crank 801 rotates... The rotational motion of 1 is converted into the reciprocating slide 807 moving up and down along the mounting slide 809. The compression spring 810 at the top of the mounting slide 809 always applies downward elastic pressure to the reciprocating slide 807, ensuring that the pressing head 808 at the bottom of the reciprocating slide 807 is in continuous pressing contact with the top of the fabric sample 403. During this process, the air pressure detection sensor 701 at the bottom of the lifting plate 6 and the air pressure detection sensor 105 in the detection hole 104 of the base 1 capture the air pressure changes in the enclosed space in real time, and analyze the air permeability of the fabric sample 403 by comparing the data.

[0044] Working principle of this invention:

[0045] Lay the fabric sample 403 to be tested flat on top of the clamping bottom ring 401, ensuring the sample is free of wrinkles and stretching deformation. Then, slip the clamping collar 404 over the clamping bottom ring 401. The rubber pressure ring 405 on the inner wall of the clamping collar 404 and the rubber pressure ring 402 on the outer surface of the clamping bottom ring 401 form a tight seal, firmly pressing the edges of the fabric sample 403 to prevent sample displacement or wrinkles from affecting the accuracy of the test data during testing. Finally, assemble the sample clamping ring with the fabric sample 403. 4. Place the sample clamping ring 4 between the mounting slot 302 and the arc-shaped base 305 of the cross turntable 301, so that the positioning plate 406 on the outer circle of the clamping ring 404 is precisely engaged with the positioning protrusion 307 on the top of the arc-shaped base 305. At the same time, align the fixing block 407 on the other side of the clamping ring 404 with the fixing slot 308 on the inner wall of the mounting slot 302. At this time, the arc-shaped base 305 is in an open state under the elastic support of the fixing spring 304, which facilitates the quick placement of the sample clamping ring 4 and completes the initial positioning of the sample.

[0046] The push motor 201 in the intermittent rotation push mechanism 2 drives the active turntable 202 to rotate at a constant speed. The protrusions on the edge of the active turntable 202 pull the linkage protrusion 207 on the top of the push turntable 204 through the connecting strip 203, causing the push turntable 204 to reciprocate within the mounting groove 101 of the base 1. The dial at the bottom of the push turntable 204 rotates synchronously, and the cylindrical pin on its edge periodically engages with the intermittent slot on the outer surface of the intermittent turntable 205. When the cylindrical pin engages with the slot, it drives the intermittent turntable 205 to rotate 90°. When the cylindrical pin disengages from the slot and slides along the arc-shaped slide, the intermittent turntable 205 remains stationary. Through this cycle of "engagement-drive-sliding-stationary", continuous rotation is converted into intermittent rotation, which is then driven by the connecting column 206 to rotate the cross. The disk 301 rotates synchronously and intermittently to achieve precise switching of the four sample clamping rings 4. When the push turntable 204 rotates, the push bar 208 at the top of the linkage protrusion 207 slides back and forth along the rectangular slide groove 102 of the base 1. The lifting top bars 209 at both ends of the push bar 208 rotate accordingly. The push protrusion 210 at the top slides in the push slide groove 601 on both sides of the lifting plate 6. When the push protrusion 210 slides to the end of the push slide groove 601, it is limited by the push slide groove 601, which converts the horizontal reciprocating motion of the push bar 208 into the up and down sliding of the lifting plate 6 along the mounting slide rod 501. The auxiliary spring 503 at the top of the mounting slide rod 501 is compressed and stores energy when the lifting plate 6 rises, and releases elastic force to assist in reset when it falls, ensuring that the lifting plate 6 moves smoothly.

[0047] When the cross turntable 301 rotates intermittently, the movable protrusion 306 at the bottom of the arc-shaped card holder 305 slides along the limiting slide groove 103 of the base 1. When the mounting slot 302 is in a non-detection position, the movable protrusion 306 slides within the concentric closed curve of the limiting slide groove 103. The arc-shaped card holder 305 remains open under the action of the fixed spring 304. When the mounting slot 302 rotates to the detection position, the movable protrusion 306 slides into the raised slide groove on the outer ring of the limiting slide groove 103, pushing the arc-shaped card holder 305 to move towards the inside of the mounting slot 302 through the movable slide rod 303. With the elastic pressure of the fixed spring 304, the sample clamping ring 4 is clamped and fixed. At the same time, the fixed insert 407 is fully inserted into the fixed slot 308, realizing the accurate positioning of the detection position of the sample clamping ring 4.

[0048] When the sample clamping ring 4 is precisely positioned directly below the first air permeability test sleeve 7, the lifting plate 6 descends, and the first air permeability test sleeve 7 adheres tightly to the top of the sample clamping ring 4 to form a relatively closed test space. At this time, the second air pressure detection sensor 701 located at the bottom of the lifting plate 6 inside the first air permeability test sleeve 7 forms a symmetrical detection combination with the first air pressure detection sensor 105 in the corresponding detection hole 104 of the base 1. Since the test space is closed, gas can only permeate through the fabric sample 403. The two sensors capture the air pressure change data in the space in real time. By comparing the difference and change rate of the two sets of air pressure data, the gas permeability of the fabric sample 403 under natural static conditions can be quantitatively analyzed, and the static air permeability test is completed.

[0049] After the sample undergoes static air permeability testing, it rotates with the cross turntable 301 to directly below the second air permeability testing sleeve 8. The lifting plate 6 descends, causing the second air permeability testing sleeve 8 to press tightly against the top of the sample clamping ring 4, forming a closed testing space. At this time, the drive motor 805 is started, driving the drive turntable 806 to rotate at a constant speed. The protrusions on the edge of the drive turntable 806 pull the linkage turntable 803 to rotate synchronously through the connecting pull strip 804, thereby driving the rotating crank 801 inside the second air permeability testing sleeve 8 to rotate around the bearing. This causes the reciprocating slide 807 to slide through and be slidably connected between the two limiting plates 802. The rotational motion of the rotating crank 801 is converted into the up-and-down reciprocating motion of the reciprocating slide 807. The two ends of the reciprocating slide 807 are slidably connected through and to the surface of the mounting slide 809 on the inner wall of the second air permeability testing sleeve 8. The mounting slide 809 provides precise guidance for the reciprocating slide 807 to prevent movement deviation. At the same time, the compression spring 810 sleeved on the top of the mounting slide 809 always applies downward elastic pressure to the reciprocating slide 807, ensuring that the pressing head 808 at the bottom of the reciprocating slide 807 is in continuous contact with the top of the fabric sample 403 and will not come off due to reciprocating motion. During the periodic pressing of the fabric sample 403 by the pressing head 808, the air pressure detection sensor 105 and the air pressure detection sensor 701 capture the dynamic changes of air pressure in the enclosed space in real time. By analyzing the fluctuation pattern and peak difference of the air pressure data during the pressing cycle, the gas permeability of the fabric sample 403 under pressure can be quantitatively evaluated, making up for the shortcomings of traditional testing which can only test static air permeability.

[0050] When the sample rotates to directly below the water permeability detection sleeve 9, the lifting plate 6 descends, causing the water permeability detection sleeve 9 to adhere tightly to the top of the sample clamping ring 4, forming a closed detection area. The automatic drip nozzle 901 at the bottom of the lifting plate 6 drips test liquid onto the top of the fabric sample 403 at a preset rate. Under gravity, the liquid permeates into the fabric sample 403. The humidity sensor 106 in the corresponding detection hole 104 of the base 1 monitors in real time whether liquid has permeated through the fabric sample 403. If the fabric sample 403 is permeable, the liquid will contact the humidity sensor 106 after permeation. The sensor converts the humidity signal into an electrical signal, and the signal strength and response time can be used to determine the permeability of the fabric sample. The permeability rate and permeability of sample 403 are measured. If the sample is not permeable, the humidity sensor 106 remains in its initial state, thereby completing the qualitative and quantitative detection of permeability performance. After completing the static air permeability, pressurized air permeability, and water permeability tests of a set of samples, the lifting plate 6 rises under the linkage of the auxiliary spring 503 and the lifting top bar 209. The air permeability test sleeve 1 7, the air permeability test sleeve 2 8, and the water permeability test sleeve 9 separate from the sample clamping ring 4. The cross turntable 301 continues to rotate 90° under the drive of the intermittent rotation pushing mechanism 2, sending the next set of samples to be tested to the testing station. At the same time, the samples that have completed the test are moved out of the testing area for easy disassembly and replacement by the operator.

Claims

1. A device for testing the water permeability and air permeability of non-woven fabric lining for bags, comprising a base (1), characterized in that: The base (1) is provided with an intermittent rotation pushing mechanism (2) inside. A sample rotation and placement mechanism (3) is rotatably installed at the center of the top of the base (1) via a bearing. Sample clamping rings (4) are respectively snapped onto the four sides of the sample rotation and placement mechanism (3). Limiting slides (5) are fixedly installed at the four corners of the top of the base (1). The limiting slides (5) include mounting slides (501), and there are four mounting slides (501). The four mounting slides (501) are respectively fixedly connected to the four corners of the top of the base (1). A connecting top frame (502) is fixedly connected to the top of the four mounting slides (501). The surfaces of the four mounting slides (501) slide through each other. A lifting plate (6) is connected and covers the top of the sample rotation and placement mechanism (3). An auxiliary spring (503) is sleeved on the surface of the mounting slide (501) on the top of the lifting plate (6). An air permeability detection sleeve one (7), an air permeability detection sleeve two (8) and a water permeability detection sleeve (9) are fixedly connected to the bottom of the lifting plate (6) along the rotation direction of the sample rotation and placement mechanism (3). A second air pressure detection sensor (701) is fixedly connected to the bottom of the lifting plate (6) at the inner side of the air permeability detection sleeve one (7) and the air permeability detection sleeve two (8). An automatic drip nozzle (901) is connected to the bottom of the lifting plate (6) at the inner side of the water permeability detection sleeve (9).

2. The device for testing the water permeability and air permeability of non-woven fabric lining for bags according to claim 1, characterized in that: The base (1) has a through mounting groove (101) inside. Rectangular sliding grooves (102) are provided on both sides of the base (1), and the rectangular sliding grooves (102) are connected to the mounting groove (101). A limiting sliding groove (103) is provided at the top of the base (1). The limiting sliding groove (103) is formed by two regular concentric closed curves, and one side of the limiting sliding groove (103) is connected by a smooth curve to a sliding groove protruding towards the outer edge of the limiting sliding groove (103). The top of the base (1) The inner ring of the limiting slide groove (103) is provided with detection holes (104) at the positions corresponding to the first air permeability detection sleeve (7), the second air permeability detection sleeve (8) and the third water permeability detection sleeve (9). The top of the base (1) is fixedly connected to the detection holes (104) corresponding to the first air permeability detection sleeve (7) and the second air permeability detection sleeve (8), and the top of the base (1) is fixedly connected to the detection holes (104) corresponding to the third water permeability detection sleeve (9).

3. The device for testing the water permeability and air permeability of non-woven fabric lining for bags according to claim 2, characterized in that: The intermittent rotational pushing mechanism (2) includes a pushing motor (201), which is fixedly connected to the outer surface of the base (1) at a position corresponding to the opening of the mounting groove (101). The output end of the pushing motor (201) is fixedly connected to an active turntable (202), which is positioned opposite to the mounting groove (101). A connecting strip (203) is rotatably connected to the top edge of the active turntable (202) via a protrusion. A pushing turntable (204) is rotatably mounted inside the bottom of the mounting groove (101) via a bearing. A linkage protrusion (207) is fixedly connected to the top edge of the pushing turntable (204). The linkage protrusion (207) is rotatably connected to one end of the connecting strip (203). The top of the linkage protrusion (207) is slidably connected to the push strip (208). The push strip (208) is slidably connected inside the rectangular slide groove (102). The two ends of the push strip (208) pass through the rectangular slide groove (102) and are respectively rotatably connected to the lifting top strip (209) through the protrusion. The top of the lifting top strip (209) is rotatably connected to the push protrusion (210). The center positions on both sides of the lifting plate (6) are respectively provided with push slide grooves (601), and the push protrusion (210) is slidably connected inside the push slide groove (601).

4. The device for testing the water permeability and air permeability of non-woven fabric lining for bags according to claim 3, characterized in that: The bottom of the mounting groove (101) is located on one side of the push turntable (204) and is rotatably mounted on an intermittent turntable (205) via a bearing. A connecting column (206) is fixedly connected to the top of the intermittent turntable (205). A dial is fixedly connected to the top of the push turntable (204). The outer circular surface of the intermittent turntable (205) is provided with four arc-shaped sliding grooves at equal angles, and the arc-shaped sliding grooves are in close contact with the circular surface of the dial. An intermittent slot is provided on the outer circular surface of the intermittent turntable (205) between two adjacent arc-shaped sliding grooves. A cylindrical pin is fixedly installed on the top of the push turntable (204) at the edge on one side of the dial, and the cylindrical pin is engaged with the intermittent slot on the surface of the intermittent turntable (205).

5. The device for testing the water permeability and air permeability of non-woven fabric lining for bags according to claim 4, characterized in that: The sample rotation and placement mechanism (3) includes a cross turntable (301), and the top of the connecting column (206) is fixedly connected to the cross turntable (301). The four sides of the cross turntable (301) are respectively provided with mounting slots (302). The two ends of the opening of the mounting slot (302) are respectively slidably connected with movable slide rods (303). The surfaces of the movable slide rods (303) located inside the openings of the mounting slots (302) are respectively fitted with fixed springs (304). One end of the two movable slide rods (303) is fixedly connected with an arc-shaped bracket (305). The center of the bottom of the arc-shaped bracket (305) is fixedly connected with a movable protrusion (306), and the movable protrusion (306) is slidably connected inside the limiting slide groove (103). The center of the top opening of the arc-shaped bracket (305) is fixedly connected with a positioning protrusion (307). The two ends of the inner wall of the mounting slot (302) are respectively symmetrically provided with fixed slots (308).

6. The device for testing the water permeability and air permeability of non-woven fabric lining for bags according to claim 5, characterized in that: The sample clamping ring (4) includes a clamping bottom ring (401), on which two rubber pressure rings (402) are fixedly installed. A fabric sample (403) is covered on the top of the clamping bottom ring (401). A clamping collar (404) is provided on the outside of the fabric sample (403), and the clamping collar (404) is sleeved on the top of the clamping bottom ring (401). Two rubber pressure rings (402) are fixedly installed on the inner wall of the clamping collar (404). 5), and the second rubber pressure ring (405) is pressed tightly against the first rubber pressure ring (402). A positioning plate (406) is fixedly connected to one side of the outer circle of the clamping sleeve (404), and the positioning plate (406) corresponds to the position of the positioning protrusion (307). A fixing block (407) is symmetrically fixedly installed on the side of the outer circle of the clamping sleeve (404) away from the positioning plate (406), and the fixing block (407) is inserted into the fixing slot (308).

7. The device for testing the water permeability and air permeability of non-woven fabric lining for bags according to claim 6, characterized in that: A rotating crank (801) is rotatably mounted on the bottom of the inner wall of the second air permeability test sleeve (8) via a bearing. One end of the rotating crank (801) extends through the second air permeability test sleeve (8) to the outside of the second air permeability test sleeve (8) and is fixedly connected to a linkage turntable (803). A connecting strip (804) is rotatably mounted on the edge of the linkage turntable (803) via a protrusion. A drive motor (805) is fixedly connected to the top of the lifting plate (6) at the position corresponding to the second air permeability test sleeve (8). A drive turntable (806) is fixedly connected to the output end of the drive motor (805), and a drive turntable (806) is rotatably connected to one end of the connecting strip (804) via a protrusion at the edge of the drive turntable (806). The two cranks of the rotating crank (801) are symmetrically mounted. A fixed limiting plate (802) is installed. The rotating crank (801) is located between the two limiting plates (802) and a reciprocating slide (807) is slidably connected through it. A pressing head (808) is symmetrically fixedly installed at the bottom of the reciprocating slide (807) and the pressing head (808) is pressed and contacted with the top of the fabric sample (403). Mounting slides (809) are symmetrically fixedly installed on both sides of the inner wall of the second air permeability test sleeve (8). The mounting slides (809) are located at both ends of the reciprocating slide (807). The two ends of the reciprocating slide (807) are slidably connected through it to the surface of the mounting slide (809). A compression spring (810) is sleeved on the surface of the mounting slide (809) at the top of the reciprocating slide (807).

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