Breathability detection device for textile fabric and detection method thereof

Abstract

The invention relates to the technical field of textile fabric manufacturing, in particular to an air permeability detection device for a textile fabric and a detection method of the air permeability detection device. Comprising a rolling-out end and a rolling-up end, a detection frame is arranged between the rolling-out end and the rolling-up end, a plurality of ventilation test units are arranged on the detection frame at equal intervals, and a flattening unit is arranged between every two adjacent ventilation test units; the ventilation test unit comprises a first electric sliding table, a lifting plate is installed at the output end of the first electric sliding table, and two sets of material abutting mechanisms are symmetrically arranged at the edges of the upper end and the lower end of the lifting plate. Compared with a traditional sampling static test, the air permeability test can be carried out on each part of the whole roll of fabric, and the real condition that the fabric is extruded or folded by human body movement when clothes made of the fabric are actually worn is simulated through corrugated movement, so that the test comprehensiveness is improved, and meanwhile, the authenticity is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of textile fabric manufacturing, and particularly relates to an air permeability detection device for textile fabrics and a detection method thereof. Background Art

[0002] The air permeability of textile fabrics has always been an important criterion for measuring their quality. In order to know the air permeability of the fabrics, it is necessary to conduct air permeability testing on them.

[0003] After searching, the cited announcement number is CN118961548B, and the announcement date is December 20, 2024. The patent document is named a device for testing the air permeability of textile fabrics, including a testing chassis, in which an upper cavity and a lower cavity are connected. The testing chassis is designed in layers to facilitate air permeability testing in a relatively closed space. A load-bearing bracket is fixedly installed in the lower end of the lower cavity, and a driving motor is fixedly installed on the load-bearing bracket. The testing chassis is provided with a first limiting mechanism for fixing the fabric from the left and right sides through the driving motor. The first limiting mechanism includes a ball screw that is rotatably installed in the lower cavity and fixedly connected to the output end of the driving motor, and a lifting nut is installed on the ball screw. The above embodiment uses the ball screw and the lifting nut to pull the guide block and the guide rod, so that the guide rod supports the limit clamp to move left and right, and at the same time, the limit clamp is used to achieve limit fixation, so as to clamp and limit the fabric from the left and right sides.

[0004] However, the above embodiment still has the following defects: The above embodiment can only intercept part of the fabric for detection, and cannot perform all-round detection of the entire fabric, which easily leads to blind spots in the detection and reduces the accuracy of the detection. At the same time, when the detection is performed, the fabric is in a static state, and it is impossible to simulate the actual situation when the human body wears clothes made of the fabric and squeezes or folds the fabric due to movement, which not only reduces the comprehensiveness of the detection, but also reduces the authenticity. Summary of the invention

[0005] In view of the above problems, the present invention provides an air permeability detection device for textile fabrics, comprising a roll-out end and a reel-in end, a detection frame is provided between the roll-out end and the reel-in end, a plurality of groups of air permeability test units are arranged at equal intervals on the detection frame, and a group of flattening units are provided between two adjacent groups of the air permeability test units; The air permeability test unit comprises a first electric slide, a lifting plate is installed on the output end of the first electric slide, two sets of material abutment mechanisms are symmetrically arranged at the upper and lower edges of the lifting plate, and air jet mechanisms and image acquisition components are symmetrically arranged on the outer walls of both sides of the material abutment mechanisms; the upper set of air jet mechanisms and image acquisition components correspond to the lower set of image acquisition components and air jet mechanisms respectively; The fabrics pass through the two sets of material abutment mechanisms of each set of air permeability test units in turn, and each set of first electric slides drives each set of material abutment mechanisms to rise and fall at a uniform speed, simulating the simultaneous swing of multiple points of the fabric in actual use.

[0006] Furthermore, a plurality of groups of vertical slide grooves are arranged at equal intervals on one side wall of the detection frame, and a plurality of groups of fixed pipe clamping grooves are arranged at equal intervals along the vertical direction on the inner wall of the vertical slide groove, and the number of the vertical slide grooves is the same as the number of the flattening units.

[0007] Furthermore, a lifting plate is installed on the output end of the first electric slide, and two groups of movable mounting blocks are symmetrically arranged at the upper and lower edges of the lifting plate, and a fixing bar is installed in the horizontal direction on the side of the movable mounting block away from the lifting plate; the two groups of material resistance mechanisms are respectively installed on the two side walls of the two groups of fixing bars that are symmetrical to each other.

[0008] Furthermore, the material-resisting mechanism includes a material-resisting barrel, the direction of the material-resisting barrel is the same as that of the fixed bar, a group of support rings are respectively sleeved on the edges of both ends of the material-resisting barrel, a sensing groove is opened on the support ring, a pressure sensor is arranged in the sensing groove, and the input end of the pressure sensor is flush with the opening height of the sensing groove; the material-resisting barrel has a plurality of groups of openings arranged at equal intervals along its own length direction.

[0009] Furthermore, a first rotating rod is rotatably connected inside the material-resisting barrel, and a plurality of groups of feeding wheels are arranged on the first rotating rod at equal intervals with the same number as the through openings. The side walls of each group of feeding wheels extend to the outside of the material-resisting barrel through a corresponding group of through openings, and the edges are flush with the supporting ring.

[0010] Furthermore, the flattening unit includes a load-bearing block, which is installed on a side wall of the detection frame away from the vertical slide groove. A vertical plate is installed on the load-bearing block, and a second electric slide is provided on the vertical plate in the vertical direction. A group of servo motors are installed on the output end of the second electric slide and at the bottom edge of the vertical plate; the output ends of the two groups of servo motors are both transmission-connected with a group of material squaring mechanisms, and the two groups of material squaring mechanisms are symmetrically arranged with each other.

[0011] Furthermore, one end of the material sizing mechanism away from the servo motor is rotatably connected to a sealed bearing seat, and the other end of the sealed bearing seat is equipped with a heat inlet pipe, and the other end of the heat inlet pipe extends to the outside of the detection frame through a corresponding set of vertical slide grooves; the tube body of the heat inlet pipe is clamped on any set of fixed pipe clamping grooves.

[0012] Furthermore, the material leveling mechanism includes a second rotating rod, one end of which is transmission-connected to the output end of the servo motor, and the other end is connected to the heat inlet pipe through a sealed bearing seat; a first set of rollers and a second set of rollers are sleeved on the second rotating rod, and the first set of rollers and the second set of rollers are symmetrically arranged with the horizontal center line of the second rotating rod as the axis.

[0013] Furthermore, the first set of rollers is provided with a first thread groove, the second set of rollers is provided with a second thread groove, and the thread directions of the first thread groove and the second thread groove are opposite; the second rotating rod, the first set of rollers and the second set of rollers are all made of heat-conducting materials.

[0014] A detection method for an air permeability detection device for textile fabrics, the detection method comprising: The cloth roll wrapped with fabric is sleeved on the roll-out end, and then the exposed end of the fabric is passed through the gap between the two sets of material-resisting mechanisms on each set of air permeability test units and each set of flattening units in turn, and finally fixed on a set of cloth rolls on the roll-up end; Turn on the switch of the rewinding end to make the fabric move from the feeding end to the rewinding end; At the same time, each group of first electric slides is turned on, and each group of first electric slides drives a corresponding group of material-resisting mechanisms to rise and fall at a uniform speed, so that the fabric moves in a corrugated shape during the winding process; When the fabric bulges, a set of jet mechanisms below will work to spray steam, and a set of image acquisition components below will collect images of the steam passing through the fabric, so as to determine the air permeability of the fabric; When the fabric descends, a group of jet mechanisms on the upper side spray steam, and a group of image acquisition components on the lower side observe it, in this way, the real environment of the fabric being squeezed or folded by the movement of the human body when wearing clothes made of the fabric is simulated; After the fabric test is completed, the wrinkled fabric is evenly spread through the flattening unit and the residual steam on the surface is dried; After the fabric passes through all the air permeability test units and flattening units and is finally wound on the winding end, the test is completed.

[0015] The beneficial effects of the present invention are: 1. When the fabric is rolled up, several groups of air permeability test units are arranged at equal intervals on the rolling path, and the two groups of material resistance mechanisms in the air permeability test units can be raised and lowered at a uniform speed and drive the fabric to bulge or sink, so that the fabric rolling path presents a regular corrugated motion. While moving, the upper and lower groups of jet mechanisms are used to spray steam in turn, and then the steam passing through the fabric is detected from the other side of the fabric through the corresponding two groups of image acquisition components, so as to achieve the purpose of air permeability testing. Compared with the traditional sampling static test, the air permeability test can be performed on all parts of the entire roll of fabric, and the corrugated motion simulates the actual situation of human body movement squeezing or folding the fabric when actually wearing clothes made of the fabric, which not only improves the comprehensiveness of the test, but also improves the authenticity.

[0016] 2. Several groups of high-pressure nozzles on the surface of the jet pipe are arranged at equal intervals, and the inclination angle increases from the middle group to both sides. This makes the side view cross-section of each group of high-pressure nozzles present a fan-shaped ring structure as a whole, and the steam sprayed is also sprayed radially on the fabric, thereby expanding the contact area between the steam and the fabric, reducing the test dead angle, and improving the detection accuracy.

[0017] 3. When the fabric passes through a group of air permeability test units near the unwinding end during movement, it comes between the two groups of material leveling mechanisms. Since the thread directions of the first thread groove and the second thread groove are opposite, the wrinkled fabric at the center can be evenly spread to both sides through the thread guides of the first thread groove and the second thread groove, thereby flattening the wrinkles on the surface of the fabric, which will not affect the subsequent further air permeability test and the final winding work. There is no need for additional fabric finishing work. While ensuring the smoothness of fabric testing and winding work, it also shortens the working time and improves efficiency.

[0018] 4. Since the second rotating rod, the first set of rollers and the second set of rollers are all made of heat-conducting materials and are heated by an external heat source, the first set of rollers and the second set of rollers can heat and dry the steam remaining on the surface of the fabric when they are in contact with the fabric. While achieving the air permeability test, it can also ensure the dryness of the fabric and avoid damage to the fabric due to moisture condensed by steam, thereby ensuring the quality of the fabric.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of a detection device according to an embodiment of the present invention is shown.

[0022] Figure 2 A schematic structural diagram of an air permeability testing unit according to an embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram showing the connection between the material blocking mechanism and the fixing bar according to an embodiment of the present invention is shown.

[0024] Figure 4 A cross-sectional schematic diagram of a material resistance mechanism according to an embodiment of the present invention is shown.

[0025] Figure 5 A schematic structural diagram of an air injection mechanism according to an embodiment of the present invention is shown.

[0026] Figure 6 A schematic structural diagram of a paving unit according to an embodiment of the present invention is shown.

[0027] Figure 7 A schematic diagram of the connection between the heat inlet pipe and the vertical slide groove according to an embodiment of the present invention is shown.

[0028] Figure 8 A schematic structural diagram of a material leveling mechanism according to an embodiment of the present invention is shown.

[0029] Fig. 9 A schematic top view of a first set of rollers and a second set of rollers according to an embodiment of the present invention is shown.

[0030] In the figure: 100, unwinding end; 200, winding end; 300, testing frame; 400, air permeability test unit; 410, first electric slide; 411, lifting plate; 420, movable mounting block; 421, fixing bar; 430, material resisting mechanism; 431, material resisting cylinder; 432, material supporting ring; 433, induction slot; 434, through port; 435, first rotating rod; 436, feeding wheel; 440, side bracket; 450, jet mechanism; 451, jet pipe; 452 , air intake valve; 453, high-pressure nozzle; 460, image acquisition component; 500, flattening unit; 510, load-bearing block; 520, vertical plate; 521, second electric slide; 530, servo motor; 540, material leveling mechanism; 541, second rotating rod; 542, first set of rollers; 543, second set of rollers; 544, first thread groove; 545, second thread groove; 550, sealing bearing seat; 560, heat inlet pipe; 600, vertical slide groove; 610, fixed pipe slot. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The embodiment of the present invention provides a device for detecting air permeability of textile fabrics, for example, Figure 1 As shown, it includes a roll-out end 100 , and a roll-in end 200 is arranged parallel to one side of the roll-out end 100 .

[0033] A detection frame 300 is arranged between the unwinding end 100 and the winding end 200. A plurality of groups of vertical slide grooves 600 are arranged at equal intervals on one side wall of the detection frame 300. A plurality of groups of fixed pipe clamping grooves 610 are arranged at equal intervals along the vertical direction on the inner wall of the vertical slide groove 600. The roll wrapped with the fabric is sleeved on the unwinding end 100, and then one end is sleeved on the winding end 200. The winding end 200 is controlled to rotate so that the fabric can pass through the detection frame 300 in sequence during the winding process.

[0034] The two ends of the detection frame 300 close to the unwinding end 100 and the winding end 200 are open structures.

[0035] The detection frame 300 is equipped with a plurality of air permeability test units 400, which are arranged at equal intervals in the horizontal direction from the side close to the unwinding end 100 to the side close to the winding end 200. The air permeability test units 400 are used to perform a uniform rise and fall while performing an air permeability test on the fabric to simulate the shaking during actual use.

[0036] A set of flattening units 500 is provided between two adjacent sets of the air permeability test units 400, the input end of the flattening unit 500 extends to the outside of the detection frame 300 through the vertical slide slot 600, and the input end of the flattening unit 500 is movably connected to any set of fixed pipe slots 610. The flattening unit 500 is used to lay the surface of the fabric flat and dry the residual steam on the surface of the fabric.

[0037] Furthermore, a steam production component and a heat energy output component are also provided on one side of the detection frame 300 .

[0038] For example, Figure 2 and Figure 3 As shown, the air permeability testing unit 400 includes a first electric slide 410, a lifting plate 411 is installed on the output end of the first electric slide 410, two groups of movable mounting blocks 420 are symmetrically arranged at the upper and lower edges of the lifting plate 411, and a fixing bar 421 is installed in the horizontal direction on the side of the movable mounting block 420 away from the lifting plate 411.

[0039] Exemplarily, two groups of material-blocking mechanisms 430 are symmetrically arranged on the two opposite side walls of the two groups of fixing bars 421, and two groups of side brackets 440 are symmetrically arranged on the outer walls on both sides of the material-blocking mechanisms 430, and the two groups of side brackets 440 are respectively installed with jet mechanisms 450 and image acquisition components 460. The upper group of jet mechanisms 450 is located directly above the lower group of image acquisition components 460, and the upper group of image acquisition components 460 is located directly above the lower group of jet mechanisms 450.

[0040] For example, Figure 4 As shown, the material resisting mechanism 430 includes a material resisting barrel 431, the direction of the material resisting barrel 431 is the same as that of the fixing bar 421, and a group of supporting rings 432 are respectively sleeved at the edges of both ends of the material resisting barrel 431, and a sensing groove 433 is opened on the supporting ring 432, and a pressure sensor is arranged in the sensing groove 433, and the input end of the pressure sensor is flush with the opening height of the sensing groove 433. The material resisting barrel 431 has a plurality of groups of through openings 434 arranged at equal intervals along its own length direction.

[0041] Exemplarily, a first rotating rod 435 is rotatably connected inside the material-repelling barrel 431, and a plurality of groups of feed wheels 436 whose number is the same as the through openings 434 are arranged at equal intervals on the first rotating rod 435, and the side walls of each group of feed wheels 436 extend to the outside of the material-repelling barrel 431 through a corresponding group of through openings 434, and the edges are flush with the support ring 432.

[0042] For example, Figure 5 As shown, the jet mechanism 450 includes a horizontally arranged jet pipe 451, one end of which is connected to an air intake valve 452, and the input end of the air intake valve 452 is connected to a steam production component. A plurality of groups of high-pressure nozzles 453 are arranged at equal intervals on the top of the jet pipe 451, and the inclination angles of the plurality of groups of high-pressure nozzles 453 increase from the middle group to the two sides, and the plurality of groups of high-pressure nozzles 453 are combined to form a radial structure.

[0043] First, the cloth roll wrapped with fabric is sleeved on the roll-out end 100, and then the exposed end of the fabric is sequentially passed through the gap between the two sets of material-resisting barrels 431 on each set of air permeability test unit 400, and finally fixed on a set of cloth rolls on the winding end 200. The winding end 200 is started, and the cloth on the roll-out end 100 can be wound on the cloth roll of the winding end 200 at a uniform speed through the rotation of the winding end 200. While the cloth is moving, each set of first electric slides 410 is started, and each set of first electric slides 410 drives a corresponding set of lifting plates 411 to move up and down at a uniform speed, so that the fabric can show a corrugated shaking when it moves. When the lifting plate 411 rises, the lower group of material-resisting barrels 431 rises and contacts the fabric, so that the joint between the two can be raised, and the rise of the fabric will squeeze the support rings 432 on both sides, and apply pressure to the pressure sensor in the sensing groove 433. The pressure sensor senses the pressure and uses its communication module to send a signal to the control module of the air inlet valve 452 of the lower group of jet pipes 451, so that steam can enter the lower group of jet pipes 451, and each group of high-pressure nozzles 453 radially sprays steam. Then, the upper group of image acquisition components 460 are used to collect images of steam passing through the fabric, so as to determine the air permeability of the fabric. When the lifting plate 411 descends, the upper group of material-resisting barrels 431 descends, and the upper group of jet pipes 451 sprays steam, which is observed by the lower group of image acquisition components 460. In this way, the fabric is repeatedly folded from two directions during movement, thereby simulating the real use environment brought about by the uninterrupted movement of the human body when wearing clothes made of the fabric.

[0044] For example, Figure 6 and Figure 7 As shown, the paving unit 500 includes a load-bearing block 510, which is installed on a side wall of the detection frame 300 away from the vertical slide 600. A vertical plate 520 is installed on the load-bearing block 510. A second electric slide 521 is provided on the vertical plate 520 in the vertical direction. A set of servo motors 530 are installed on the output end of the second electric slide 521 and the bottom edge of the vertical plate 520. The output ends of the two sets of servo motors 530 are both connected to a set of material scrambling mechanisms 540 in a transmission manner, and the two sets of material scrambling mechanisms 540 are symmetrically arranged.

[0045] Exemplarily, one end of the material shaving mechanism 540 away from the servo motor 530 is rotatably connected to a sealed bearing seat 550, and the other end of the sealed bearing seat 550 is installed with a heat inlet pipe 560, and the other end of the heat inlet pipe 560 extends horizontally to the outside of the detection frame 300 through a corresponding set of vertical slide grooves 600, and is connected to the heat energy output component. The pipe body of the heat inlet pipe 560 is movably connected to any set of fixed pipe slots 610.

[0046] For example, Figure 8and Fig. 9 As shown, the material leveling mechanism 540 includes a second rotating rod 541, one end of which is transmission-connected to the output end of the servo motor 530, and the other end is connected to the heat inlet pipe 560 through a sealed bearing seat 550. The second rotating rod 541 is sleeved with a first set of rollers 542 and a second set of rollers 543, and the first set of rollers 542 and the second set of rollers 543 are symmetrically arranged with the horizontal center line of the second rotating rod 541 as the axis. The first set of rollers 542 is provided with a first thread groove 544, and the second set of rollers 543 is provided with a second thread groove 545, and the thread directions of the first thread groove 544 and the second thread groove 545 are opposite. The second rotating rod 541, the first set of rollers 542 and the second set of rollers 543 are all made of heat-conducting materials.

[0047] During the test, the fabric is prone to edge curling due to repeated squeezing on the upper and lower sides, so a set of flattening units 500 is set between two adjacent groups of air permeability test units 400. First, before the test, the fabric is passed through the gap between the two groups of material leveling mechanisms 540 in each group of air permeability test units 400 and each group of flattening units 500, and then the second electric slide 521 is started, and the upper group of material leveling mechanisms 540 are driven down by the second electric slide 521 until the two groups of material leveling mechanisms 540 can be attached to the fabric from both the upper and lower sides at the same time. Then, the heat output component transmits the heat energy to the second rotating rod 541 through the heat inlet pipe 560 through the sealed bearing seat 550, so that the first set of rollers 542 and the second set of rollers 543 are also heated.

[0048] During the winding process at the winding end 200, two sets of servo motors 530 are started, and the two sets of second rotating rods 541 are driven by the two sets of servo motors 530 to rotate in opposite directions respectively. When the fabric passes through a set of air permeability test units 400 near the unwinding end 100 during movement, it comes between the two sets of material leveling mechanisms 540. Since the thread directions of the first thread groove 544 and the second thread groove 545 are opposite, the wrinkled fabric at the center can be evenly spread to both sides through the thread guides of the first thread groove 544 and the second thread groove 545, so as to flatten the wrinkles on the surface of the fabric, which will not affect the subsequent further air permeability test and the final winding work. At the same time, since the second rotating rod 541, the first set of rollers 542 and the second set of rollers 543 are all made of heat-conducting materials and are heated by an external heat source, the first set of rollers 542 and the second set of rollers 543 can heat and dry the steam remaining on the surface of the fabric when they come into contact with the fabric. While achieving the air permeability test, it can also ensure the dryness of the fabric and avoid damage to the fabric due to moisture condensed from the steam, thereby improving the rolling effect of the fabric.

[0049] The above embodiments have the following beneficial effects: 1. When the fabric is rolled up, several groups of air permeability test units 400 are arranged at equal intervals on the rolling path, and the two groups of material-resisting mechanisms 430 in the air permeability test unit 400 can be raised and lowered at a uniform speed and drive the fabric to bulge or sink, so that the rolling path of the fabric presents a regular wavy motion. While moving, the upper and lower groups of jet mechanisms 450 are used to spray steam in turn, and then the steam passing through the fabric is detected from the other side of the fabric through the corresponding two groups of image acquisition components 460, so as to achieve the purpose of air permeability test. Compared with the traditional sampling static test, the air permeability test can be performed on all parts of the whole roll of fabric, and the wavy motion simulates the real situation of human body movement squeezing or folding the fabric when actually wearing clothes made of the fabric, which not only improves the comprehensiveness of the test, but also improves the authenticity.

[0050] 2. Several groups of high-pressure nozzles 453 on the surface of the jet pipe 451 are arranged at equal intervals, and the inclination angle increases from the middle group to both sides. This makes the side view cross-section of each group of high-pressure nozzles 453 present a fan-shaped structure as a whole, and the steam sprayed is also sprayed radially on the fabric, thereby expanding the contact area between the steam and the fabric, reducing the test blind spot, and improving the detection accuracy.

[0051] 3. When the fabric passes through a group of air permeability test units 400 near the unwinding end 100 during movement, it comes between the two groups of material leveling mechanisms 540. Since the thread directions of the first thread groove 544 and the second thread groove 545 are opposite, the wrinkled fabric at the center can be evenly spread to both sides through the thread guides of the first thread groove 544 and the second thread groove 545, thereby smoothing the wrinkles on the surface of the fabric, which will not affect the subsequent further air permeability test and the final winding work, and there is no need for additional fabric sorting work. While ensuring the smoothness of fabric testing and winding work, it also shortens the working time and improves efficiency.

[0052] 4. Since the second rotating rod 541, the first set of rollers 542 and the second set of rollers 543 are all made of heat-conducting materials and are heated by an external heat source, the first set of rollers 542 and the second set of rollers 543 can heat and dry the steam remaining on the surface of the fabric when they are in contact with the fabric. While achieving the air permeability test, the fabric can also be kept dry to avoid damage to the fabric due to moisture condensed from steam, thereby ensuring the quality of the fabric.

[0053] Based on the above-mentioned air permeability detection device for textile fabrics, an embodiment of the present invention further proposes a detection method of the detection device. Exemplarily, the detection method includes: The cloth roll wrapped with the fabric is sleeved on the roll-out end, and then the exposed end of the fabric is sequentially passed through the gap between the two sets of material abutment mechanisms on each set of air permeability test units and the gap between the two sets of material leveling mechanisms on each set of flattening units, and finally fixed on a set of cloth rolls on the roll-up end; Turn on the switch of the rewinding end to make the fabric move from the feeding end to the rewinding end; At the same time, each group of first electric slides is turned on, and each group of first electric slides drives a corresponding group of material-resisting mechanisms to rise and fall at a uniform speed, so that the fabric moves in a corrugated shape during the winding process; When the fabric bulges, a set of jet mechanisms below will work to spray steam, and a set of image acquisition components below will collect images of the steam passing through the fabric, so as to determine the air permeability of the fabric; When the fabric descends, a group of jet mechanisms on the upper side spray steam, and a group of image acquisition components on the lower side observe it, in this way, the real environment of the fabric being squeezed or folded by the movement of the human body when wearing clothes made of the fabric is simulated; After the fabric test is completed, it continues to move to the adjacent flattening unit, and rotates in opposite directions through two sets of second rotating rods, so that the first set of rollers and the second set of rollers spread the fabric folded at the center to both sides; The first set of rollers and the second set of rollers are heated at the same time, so that the heat energy can dry the steam remaining on the surface of the fabric; After the fabric passes through all the air permeability test units and flattening units and is finally wound on the winding end, the test is completed.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting air permeability of textile fabrics, comprising a roll-out end (100) and a roll-in end (200), characterized in that: A detection frame (300) is provided between the unwinding end (100) and the winding end (200), a plurality of groups of air permeability test units (400) are arranged at equal intervals on the detection frame (300), and a group of flattening units (500) is provided between two adjacent groups of the air permeability test units (400); The air permeability testing unit (400) comprises a first electric slide (410), a lifting plate (411) is installed on the output end of the first electric slide (410), two groups of material-blocking mechanisms (430) are symmetrically arranged at the upper and lower edges of the lifting plate (411), and air-jet mechanisms (450) and image acquisition components (460) are symmetrically arranged on the outer walls of both sides of the material-blocking mechanisms (430); the upper group of air-jet mechanisms (450) and image acquisition components (460) respectively correspond to the lower group of image acquisition components (460) and air-jet mechanisms (450); The fabric passes through the two sets of material-resisting mechanisms (430) of each set of air permeability test units (400) in sequence, and each set of first electric slides (410) drives each set of material-resisting mechanisms (430) to rise and fall at a uniform speed, thereby simulating the simultaneous swinging of multiple points of the fabric in actual use.

2. The air permeability detection device for textile fabrics according to claim 1, characterized in that: A plurality of groups of vertical slide grooves (600) are arranged at equal intervals on one side wall of the detection frame (300), and a plurality of groups of fixed pipe clamping grooves (610) are arranged at equal intervals in the vertical direction on the inner wall of the vertical slide groove (600), and the number of the vertical slide grooves (600) is the same as that of the flattening units (500).

3. The air permeability detection device for textile fabrics according to claim 1, characterized in that: A lifting plate (411) is installed on the output end of the first electric slide (410); two groups of movable mounting blocks (420) are symmetrically arranged at the upper and lower edges of the lifting plate (411); a fixing strip (421) is installed in the horizontal direction on one side of the movable mounting block (420) away from the lifting plate (411); and the two groups of material-blocking mechanisms (430) are respectively installed on two symmetrical side walls of the two groups of fixing strips (421).

4. The air permeability detection device for textile fabrics according to claim 3, characterized in that: The material resisting mechanism (430) comprises a material resisting barrel (431), the direction of the material resisting barrel (431) being the same as that of the fixing bar (421), a group of supporting rings (432) being respectively sleeved at the edges of both ends of the material resisting barrel (431), a sensing groove (433) being provided on the supporting ring (432), a pressure sensor being provided in the sensing groove (433), and an input end of the pressure sensor being flush with the opening height of the sensing groove (433); and a plurality of groups of through openings (434) being arranged at equal intervals on the material resisting barrel (431) along its own length direction.

5. The air permeability detection device for textile fabrics according to claim 4, characterized in that: A first rotating rod (435) is rotatably connected inside the material-resisting barrel (431), and a plurality of groups of feeding wheels (436) having the same number as the through openings (434) are arranged on the first rotating rod (435) at equal intervals, and the side walls of each group of the feeding wheels (436) extend to the outside of the material-resisting barrel (431) through a corresponding group of through openings (434), and the edges are flush with the supporting ring (432).

6. The air permeability detection device for textile fabrics according to claim 2, characterized in that: The paving unit (500) comprises a load-bearing block (510), wherein the load-bearing block (510) is mounted on a side wall of the detection frame (300) away from the vertical slide groove (600), and a vertical plate (520) is mounted on the load-bearing block (510), and a second electric slide (521) is arranged on the vertical plate (520) in a vertical direction, and a group of servo motors (530) are mounted on the output end of the second electric slide (521) and the bottom edge of the vertical plate (520); and a group of material leveling mechanisms (540) are both transmission-connected to the output ends of the two groups of servo motors (530), and the two groups of material leveling mechanisms (540) are symmetrically arranged with each other.

7. The air permeability detection device for textile fabrics according to claim 6, characterized in that: One end of the material leveling mechanism (540) away from the servo motor (530) is rotatably connected to a sealing bearing seat (550); the other end of the sealing bearing seat (550) is mounted with a heat inlet pipe (560); the other end of the heat inlet pipe (560) extends to the outside of the detection frame (300) through a corresponding set of vertical slide grooves (600); the tube body of the heat inlet pipe (560) is clamped on any set of fixed pipe clamping grooves (610).

8. The air permeability detection device for textile fabrics according to claim 7, characterized in that: The material leveling mechanism (540) comprises a second rotating rod (541), one end of the second rotating rod (541) being transmission-connected to the output end of the servo motor (530), and the other end of the second rotating rod (541) being connected to the heat inlet pipe (560) via a sealing bearing seat (550); a first set of rollers (542) and a second set of rollers (543) are sleeved on the second rotating rod (541), and the first set of rollers (542) and the second set of rollers (543) are symmetrically arranged with the horizontal center line of the second rotating rod (541) as the axis.

9. The air permeability detection device for textile fabrics according to claim 8, characterized in that: The first set of rollers (542) is provided with a first thread groove (544), and the second set of rollers (543) is provided with a second thread groove (545); the thread directions of the first thread groove (544) and the second thread groove (545) are opposite; the second rotating rod (541), the first set of rollers (542) and the second set of rollers (543) are all made of heat-conducting material.

10. A detection method for the air permeability detection device for textile fabrics according to any one of claims 1 to 9, characterized in that: The detection method comprises: The cloth roll wrapped with fabric is sleeved on the roll-out end, and then the exposed end of the fabric is passed through the gap between the two sets of material-resisting mechanisms on each set of air permeability test units and each set of flattening units in turn, and finally fixed on a set of cloth rolls on the roll-up end; Turn on the switch of the rewinding end to make the fabric move from the feeding end to the rewinding end; At the same time, each group of first electric slides is turned on, and each group of first electric slides drives a corresponding group of material-resisting mechanisms to rise and fall at a uniform speed, so that the fabric moves in a corrugated shape during the winding process; When the fabric bulges, a set of jet mechanisms below will work to spray steam, and a set of image acquisition components below will collect images of the steam passing through the fabric, so as to determine the air permeability of the fabric; When the fabric descends, a group of jet mechanisms on the upper side spray steam, and a group of image acquisition components on the lower side observe it, in this way, the real environment of the fabric being squeezed or folded by the movement of the human body when wearing clothes made of the fabric is simulated; After the fabric test is completed, the wrinkled fabric is evenly spread through the flattening unit and the residual steam on the surface is dried; After the fabric passes through all the air permeability test units and flattening units and is finally wound on the winding end, the test is completed.

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