Textile fabric air permeability detection equipment and detection method

Abstract

The invention relates to the technical field of fabric air permeability detection, in particular to textile fabric air permeability detection equipment and a detection method.The textile fabric air permeability detection equipment comprises a detection table and a supporting frame installed above the middle of the rear side of the detection table, two detection pipes are symmetrically installed in a transverse plate in a penetrating mode, and two detection grooves are symmetrically formed in the upper surface of the detection table; an air supply mechanism is mounted in the detection table below the detection groove, bearing frames are mounted on the left side and the right side of the detection table, clamping frames are mounted on one sides of the bearing frames through mounting rods, a synchronous clamping control assembly used for controlling the clamping frames to clamp the fabric is connected to the front side face of the detection table, and a control rod is mounted at the right end of the mounting rod on the right side; the right end of the control rod is connected with the self-rotation control assembly. According to the textile fabric air permeability detection equipment and method, the air permeability of the front face and the back face of the textile fabric can be detected at the same time, the detection efficiency is improved, and different use requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of fabric air permeability detection, and in particular to a textile fabric air permeability detection device and a detection method. Background Art

[0002] Textile fibers can be made into textile fabrics after various processing, and then the textile fabrics are used in clothing, home textiles and other fields. Due to the large-scale production process, there will be many production batches of textile fabrics. In order to ensure that the air permeability of different batches of textile fabrics is relatively stable and consistent, it is necessary to use air permeability testing equipment to test the air permeability of textile fabrics; For example, the patent name disclosed in the prior art with the announcement number "CN111638163A" is "A knitted fabric air permeability detection device", which discloses that the knitted fabric on the unwinding roller passes through the feed port and the discharge port and reaches the winding roller, and the fan is started. The fan produces an air flow to blow to the knitted fabric. After the air flow passes through the knitted fabric, the sphere is blown upward to observe the sphere. The higher the sphere moves, the higher the air permeability of the knitted fabric below the sphere is, and the lower the sphere moves, the lower the air permeability of the knitted fabric below the sphere is. Through the design of multiple test tubes and spheres, the air permeability of various parts of the knitted fabric can be tested. Each part of the knitted fabric corresponds to an independent test tube and sphere, which improves the accuracy of the knitted fabric air permeability detection. The invention discloses a fabric air permeability detection device, which discloses that when the gear rotates to drive the air duct and the detection bucket to gather together, it also drives the toggle frame at the end of the toggle shaft to rotate. At this time, the dial wheel on the toggle frame moves in the toggle frame to toggle the toggle frame, so that the two sticking cylinders can continuously reciprocate left and right. At this time, the slider slides on the T-shaped guide rail to assist the movement of the sticking cylinders, so that the fluff, hair balls, etc. attached to the upper and lower sides of the fabric are removed by sticking with the two reciprocating movements. Then the air duct and the detection bucket continue to gather together to clamp the fabric between the air duct and the detection bucket, and then the driving motor works to drive the fan blades to generate wind force to blow on the fabric, so that the wind can pass through the fabric into the detection bucket. At this time, the airflow sensor detects the airflow in the detection bucket. If the airflow volume is large, it means that the fabric has good air permeability. On the contrary, if the airflow volume is small, it means that the fabric has poor air permeability.

[0003] Many textile fabrics have different textures, yarn arrangements and material distributions on the front and back sides due to factors such as weaving process, post-finishing and coating treatment, which will directly affect the difference in air permeability between the front and back sides. Therefore, by testing the front and back sides, the air permeability characteristics of different sides of the fabric can be fully understood, which is crucial for accurately evaluating the applicability of the fabric. However, when the textile fabric air permeability detection device in the above-mentioned prior art is in use, it is only possible to detect the air permeability of one side of the fabric at a time. When the air permeability of the other side of the fabric needs to be detected, the clamping of the fabric needs to be released first, and then the fabric needs to be manually turned over before the detection can be performed. This makes it impossible to detect the air permeability of the front and back sides of the fabric at the same time, which in turn leads to a slow detection efficiency of the air permeability detection device. At the same time, the applicability of the air permeability detection device is poor and cannot meet different usage requirements. Therefore, we propose a textile fabric air permeability detection device and a detection method to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide a textile fabric air permeability detection device and a detection method to solve the problem raised in the above background technology that the air permeability detection devices currently on the market cannot simultaneously detect the air permeability of the front and left side of the fabric, which leads to slow detection efficiency of the air permeability detection device and poor applicability of the air permeability detection device, which cannot meet different usage requirements.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a textile fabric air permeability detection device, comprising a detection platform, and a support frame installed on the upper middle part of the rear side of the detection platform, the upper bottom surface of the support frame is connected to the cross plate through an electric push rod, two detection tubes are symmetrically installed inside the cross plate, two detection slots are symmetrically provided on the upper surface of the detection platform, an air supply mechanism is installed in the detection platform below the detection slot, a support frame is installed on the left and right sides of the detection platform, a clamping frame is installed on one side of the support frame through a mounting rod, a synchronous clamping control component for controlling the clamping of the fabric by the clamping frame is connected to the front side of the detection platform, a control rod is installed at the right end of the right mounting rod, and the right end of the control rod is connected to the self-rotation control component.

[0006] Preferably, an arc-shaped groove is provided in the middle of the upper surface of the detection platform, and a display control mechanism is installed above the support frame.

[0007] Preferably, an airflow sensor is installed inside the detection tube, a sealing ring is fixed to the outer side of the lower end of the detection tube, and the outer diameter of the detection tube is smaller than the diameter of the corresponding detection groove directly below.

[0008] Preferably, the air supply mechanism includes a fan installed in the testing table, an air inlet pipe installed on the front side of the fan passes through the front side of the testing table, and a flow equalizing pipe with a "Y"-shaped structure is installed at the upper air outlet of the fan. Both ends of the flow equalizing pipe are inserted into the bottom ends of the two testing slots, and the vertical center line of the flow equalizing pipe, the vertical center line of the air outlet of the fan, and the vertical center line of the testing table are all on the same vertical line.

[0009] Preferably, the mounting rod on the left is fixedly connected to the supporting frame on the left, and the mounting rod on the right is rotatably connected to the supporting frame on the right.

[0010] Preferably, the synchronous clamping control component includes a bidirectional screw rod installed in a groove opened on the front side of the detection platform, and the outer side of the bidirectional screw rod is symmetrically threaded with two connecting frames, and the outer end of the connecting frame is fixed with a regulating ring, which is slidably mounted on the outer side of the mounting rod.

[0011] Preferably, an extrusion fixing plate is provided inside the clamping frame, a vertical rod installed above the extrusion fixing plate penetrates the upper surface of the clamping frame, and a return spring is nested and connected to the upper outer side of the vertical rod, a connecting plate is fixed above a row of vertical rods, the upper surface of the extrusion fixing plate is arranged in an inclined shape, and an adjusting plate with an inverted "L" shaped structure is fitted on the upper surface of the extrusion fixing plate, and the extrusion fixing plate forms a lifting structure through the adjusting plate; The end of the regulating plate away from the extrusion fixing plate passes through the outer side of the clamping frame and is in close contact with one side of the regulating ring. The regulating plate forms a sliding structure through the regulating ring. The sliders installed on the front and rear sides of the regulating plate are slidably connected to the grooves in the clamping frame.

[0012] Preferably, the self-rotation control assembly includes a motor, and the right end of the control rod is connected to the motor via a coupling.

[0013] Preferably, the self-rotation control assembly includes a transmission gear key-connected to the outside of the control rod, a rack assembly is meshedly connected below the transmission gear, an "L"-shaped adjustment frame is installed at the rear end of the rack assembly, a self-push plate with an inclined bottom is fixed to the upper right side of the cross plate, the lower part of the self-push plate is fitted with the upper part of the adjustment frame, the adjustment frame forms a front and rear sliding structure through the self-push plate, a limit slide bar is installed on the rear side of the detection platform, the outer side of the limit slide bar passes through the interior of the adjustment frame, and the front end of the limit slide bar passes through and is nested with a connecting spring.

[0014] Another technical solution provided by the present invention is to provide a method for detecting air permeability of textile fabrics, comprising the following steps: S1: placing the textile fabric on the testing table, and then placing the left and right sides of the textile fabric into two clamping frames respectively, and controlling the two clamping frames to clamp the left and right sides of the textile fabric at the same time through the synchronous clamping control component; S2: Then, the right clamping frame is controlled to rotate 180° by the self-rotation control component, so that the right side of the textile fabric is turned 180°. At this time, the front side of the right side of the textile fabric faces downward, and the front side of the left side of the textile fabric still faces upward; S3: Then the horizontal plate drives the two detection tubes to descend and cooperate with the two detection slots, and then air is supplied through the air supply mechanism to simultaneously detect the air permeability of the front and back sides of the textile fabric.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the textile fabric air permeability detection device and detection method can simultaneously detect the air permeability of the front and back sides of the textile fabric, thereby improving the detection efficiency and meeting different usage requirements. The specific contents are as follows: The control rod drives the clamping frame on the right to rotate 180° through the self-rotation control component, so that the clamping frame on the right turns the right side of the textile fabric 180°, so that the front side of the right side of the textile fabric faces downward, and the front side of the left side of the textile fabric still faces upward. Therefore, the air permeability of the front and back sides of the textile fabric can be tested at the same time through the cooperation of the two sets of detection tubes and the detection slots, thereby improving the detection efficiency and meeting different usage requirements; Furthermore, by using a "Y"-shaped flow equalizing tube, and coinciding the vertical center line of the flow equalizing tube, the vertical center line of the fan outlet, and the vertical center line of the test bench, the flow equalizing tube can evenly deliver the air volume to the two test slots, thereby avoiding the accuracy of the test data being affected by different air volumes.

[0016] By rotating the bidirectional screw rod, the two connecting frames and the regulating ring can be driven to move toward each other at the same time, so that the two regulating rings can simultaneously apply a thrust to the two regulating plates, so that the movement of the regulating plates applies a downward thrust to the extrusion fixing plate, so as to simultaneously control the two sets of clamping frames to clamp and fix the left and right sides of the textile fabric at the same time, which is convenient to operate; Furthermore, by setting the regulating ring in a circular ring shape, the regulating ring can always abut against the regulating plate, and then the rotation of the clamping frame on the right side will not affect the clamping operation of the textile fabric.

[0017] The self-rotation control assembly includes a motor, and the control rod can be directly driven to rotate by the motor; Furthermore, the self-rotation control component includes a transmission gear, which drives the self-propelled plate to descend by descending the cross plate, so that the self-propelled plate with an inclined bottom surface automatically pushes the adjustment frame backward, so that the adjustment frame drives the transmission gear and the control rod to rotate through the rack assembly, without the need for an additional power source, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2It is a schematic diagram of the internal cross-sectional structure of the detection platform of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping frame of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the clamping frame and the regulating plate of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the control panel of the present invention after it moves; Figure 6 This is a schematic diagram of the structure of the control panel of the present invention when viewed from above; Figure 7 It is a schematic diagram of a three-dimensional structure of a connection frame and a bidirectional screw rod of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the control rod in the second embodiment of the present invention; Fig. 9 This is a schematic diagram of the rear view structure of the detection platform in the second embodiment of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure after the self-propelling plate in the second embodiment of the present invention is lowered.

[0019] In the figure: 1. test table; 2. test slot; 3. groove; 4. support frame; 5. display control mechanism; 6. electric push rod; 7. horizontal plate; 8. test tube; 81. air flow sensor; 82. sealing ring; 9. clamping frame; 91. extrusion fixing plate; 92. connecting plate; 93. vertical rod; 94. reset spring; 10. mounting rod; 11. control rod; 111. transmission gear; 12. bearing frame; 13. air inlet pipe; 14. two-way screw rod; 15. connecting frame; 16. fan; 17. flow equalizing pipe; 18. regulating ring; 19. regulating plate; 191. slider; 20. adjustment frame; 21. rack assembly; 22. self-propelling plate; 23. limit slide rod; 231. connecting spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0021] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: Embodiment 1: The air permeability detection device and method of textile fabrics in this embodiment can detect the air permeability of the front and back sides of the fabric at the same time, thereby improving the detection efficiency and meeting different usage requirements. For the specific structure, refer to the attached Figure 1-Figure 7As shown, it includes a testing platform 1, and a support frame 4 installed on the upper middle part of the rear side of the testing platform 1, the upper bottom surface of the support frame 4 is connected to the horizontal plate 7 through an electric push rod 6, and two detection tubes 8 are symmetrically installed inside the horizontal plate 7. Two detection slots 2 are symmetrically provided on the upper surface of the testing platform 1, and an air supply mechanism is installed in the testing platform 1 below the detection slots 2. A carrier frame 12 is installed on the left and right sides of the testing platform 1, and a clamping frame 9 is installed on one side of the carrier frame 12 through a mounting rod 10. A synchronous clamping control component for controlling the clamping frame 9 to clamp the fabric is connected to the front side of the testing platform 1, and a control rod 11 is installed on the right end of the mounting rod 10 on the right side, and the right end of the control rod 11 is connected to the self-rotation control component. An arc-shaped groove 3 is provided in the middle of the surface, a display control mechanism 5 is installed above the support frame 4, an airflow sensor 81 is installed inside the detection tube 8, a sealing ring 82 is fixed to the outer side of the lower end of the detection tube 8, the outer diameter of the detection tube 8 is smaller than the diameter of the corresponding detection slot 2 directly below, and the air supply mechanism includes a fan 16 installed in the detection platform 1, an air inlet pipe 13 installed on the front side of the fan 16 passes through the front side of the detection platform 1, and a flow equalizing tube 17 with a "Y" shape structure is installed at the air outlet above the fan 16, both ends of the flow equalizing tube 17 are inserted into the bottom ends of the two detection slots 2, and the vertical center line of the flow equalizing tube 17, the vertical center line of the air outlet of the fan 16 and the vertical center line of the detection platform 1 are all on the same vertical line.

[0022] The mounting rod 10 on the left is fixedly connected to the supporting frame 12 on the left, and the mounting rod 10 on the right is connected to the supporting frame 12 on the right for rotation. The synchronous clamping control component includes a bidirectional screw rod 14 installed in a groove provided on the front side of the detection platform 1. The outer side of the bidirectional screw rod 14 is symmetrically threaded with two connecting frames 15. The outer end of the connecting frame 15 is fixed with a regulating ring 18, and the regulating ring 18 is sleeved and slid on the outer side of the mounting rod 10. An extrusion fixing plate 91 is arranged inside the clamping frame 9. A vertical rod 93 installed above the extrusion fixing plate 91 penetrates the upper surface of the clamping frame 9, and a reset spring 94 is nested and connected to the upper outer side of the vertical rod 93. A row of vertical rods A connecting plate 92 is fixed above the rod 93, the upper surface of the extrusion fixing plate 91 is arranged in an inclined shape, and an adjusting plate 19 in an inverted "L" shape is fitted on the upper surface of the extrusion fixing plate 91. The extrusion fixing plate 91 forms a lifting structure through the adjusting plate 19, and the end of the adjusting plate 19 away from the extrusion fixing plate 91 passes through the outer side surface of the clamping frame 9 and is in fit contact with one side surface of the adjusting ring 18. The adjusting plate 19 forms a sliding structure through the adjusting ring 18, and the sliders 191 installed on the front and rear sides of the adjusting plate 19 are slidably connected to the grooves in the clamping frame 9. The self-rotation control component includes a motor, and the right end of the control rod 11 is connected to the motor through a coupling.

[0023] When the air permeability of the front and back sides of the textile fabric is different due to factors such as weaving process, post-finishing and coating treatment, and the air permeability of the front and back sides of the fabric needs to be tested, the cut fabric is placed on the top of the testing table 1, and the left and right sides of the fabric are respectively placed in the two clamping frames 9, and then the left end of the bidirectional screw rod 14 is manually rotated. When the bidirectional screw rod 14 rotates, the two connecting frames 15 connected by the outer threads are driven to move inward at the same time. At this time, the connecting frame 15 drives the regulating ring 18 to move inward. At this time, the regulating ring 18 pushes the regulating plate 19 into the clamping frame 9. At this time, the sliders 191 on the front and rear sides of the regulating plate 19 are in the grooves in the clamping frame 9. The adjusting plate 19 is in an inverted "L" shape, and the upper surface of the squeezing and fixing plate 91 is inclined. Therefore, when the adjusting plate 19 moves into the clamping frame 9, the adjusting plate 19 applies a downward thrust to the squeezing and fixing plate 91. At this time, the squeezing and fixing plate 91 drives the vertical rod 93 and the connecting plate 92 to move downward. At this time, the reset spring 94 accumulates force, so that the squeezing and fixing plate 91 cooperates well with the clamping frame 9 to clamp and fix the left and right sides of the fabric. At the same time, the bottom surface of the squeezing and fixing plate 91 and the inner wall of the clamping frame 9 are concave and convex, which can increase the friction and improve the stability of the squeezing and fixing plate 91 and the clamping frame 9 in clamping the fabric.

[0024] Next, the self-rotation control component of the motor can be connected to the control rod 11 through the coupling, so that the motor drives the control rod 11 and the right-side mounting rod 10 and the clamping frame 9 to rotate 180°. At this time, the right side surface of the right-side regulating plate 19 is always in contact with the right-side regulating ring 18 during rotation. At the same time, balls are installed on the left and right sides of the regulating plate 19, thereby reducing the friction between the regulating plate 19 and the extrusion fixing plate 91 and the regulating ring 18. Therefore, the rotation of the right-side clamping frame 9 will not affect the clamping operation of the fabric. When the right-side clamping frame 9 rotates, the right side surface of the fabric will be flipped 180°. At this time, the front side of the right side of the textile fabric faces downward, and the front side of the left side of the textile fabric is still facing upward (due to the The left and right sides of the textile fabric are clamped by the clamping frame 9, so when the right side of the textile fabric is rotated, the textile fabric will not be rotated into a twisted cylindrical shape. At this time, the textile fabric is flat on the testing table 1 like a bow, and the middle area of ​​the textile fabric can be placed in the groove 3. At this time, the left and right sides of the textile fabric are still horizontal. At this time, the staff can also further smooth the left and right sides of the textile fabric by hand), and then start the electric push rod 6. The output end of the electric push rod 6 drives the cross plate 7 to move downward, and then the cross plate 7 drives the two detection tubes 8 to move downward, and then the lower end of the detection tube 8 is inserted into the detection groove 2. At this time, the lower end of the detection tube 8 will pull part of the fabric into the detection groove 2, which will also make The fabric directly below the detection tube 8 is flat and wrinkle-free, and the sealing ring 82 is sealed to prevent gas leakage, which will not affect the accuracy of subsequent detection. Then the fan 16 is started, and the fan 16 first filters the external wind through the filter plate in the air inlet pipe 13. The filter plate is a prior art, so it is not drawn in the figure, and then enters the equalizing tube 17 through the air outlet above the fan 16. At this time, since the equalizing tube 17 is in a "Y" shape, and the vertical center line of the equalizing tube 17, the vertical center line of the air outlet of the fan 16, and the vertical center line of the detection platform 1 all coincide, the equalizing tube 17 evenly transports the air volume to the two detection slots 2, so that the air volume entering the two detection slots 2 is relatively Similarly, the wind in the detection slot 2 on the left flows upward through the back of the textile fabric to the detection tube 8 on the left. At this time, the airflow sensor 81 in the detection tube 8 on the left detects the airflow rate. The wind in the detection slot 2 on the right flows upward through the front of the textile fabric to the detection tube 8 on the right. At this time, the airflow sensor 81 in the detection tube 8 on the right detects the airflow rate. Therefore, the data detected by the two airflow sensors 81 are analyzed and displayed by the display control mechanism 5, and the air permeability of the front and back of the textile fabric can be known (this part is the existing technology and will not be introduced in detail here). Therefore, the air permeability of the front and back of the textile fabric can be detected at the same time, which is convenient to operate and can improve the detection efficiency.

[0025] When the air permeability of only one side of the textile fabric needs to be tested, the self-rotating control component is not used to drive the control rod 11 to rotate.

[0026] In order to better demonstrate the detection method of the air permeability detection device for textile fabrics, this embodiment discloses a detection method of the air permeability detection device for textile fabrics, comprising the following steps: The first step: placing the textile fabric on the testing table 1, and then placing the left and right sides of the textile fabric into two clamping frames 9 respectively, and controlling the two clamping frames 9 to clamp the left and right sides of the textile fabric at the same time through the synchronous clamping control component; Step 2: Then, the right clamping frame 9 is controlled to rotate 180° by the self-rotation control component, so that the right side of the textile fabric is turned 180°. At this time, the front side of the right side of the textile fabric faces downward, and the front side of the left side of the textile fabric still faces upward; Step 3: Then the horizontal plate 7 drives the two detection tubes 8 to descend and cooperate with the two detection slots 2, and then air is supplied through the air supply mechanism to simultaneously detect the air permeability of the front and back sides of the textile fabric.

[0027] Embodiment 2: The textile fabric air permeability detection device and detection method in this embodiment discloses another structure of the self-rotation control component, so that the horizontal plate 7 in the detection device automatically drives the control rod 11 to rotate through the self-rotation control component while descending, without the need for an additional power source, which not only saves energy but also further improves the detection efficiency. For the specific structure, please refer to the attached Figure 8-Figure 10 As shown, the self-rotation control assembly includes a transmission gear 111 key-connected to the outside of the control rod 11, a rack assembly 21 is meshedly connected below the transmission gear 111, an "L"-shaped adjustment frame 20 is installed at the rear end of the rack assembly 21, a self-push plate 22 with an inclined bottom surface is fixed to the upper right side of the cross plate 7, the lower part of the self-push plate 22 is fitted with the upper part of the adjustment frame 20, and the adjustment frame 20 forms a front and rear sliding structure through the self-push plate 22, a limit slide bar 23 is installed on the rear side of the detection platform 1, the outer side of the limit slide bar 23 passes through the interior of the adjustment frame 20, and the front end of the limit slide bar 23 passes through and is nested with a connecting spring 231.

[0028] When the self-pushing plate 22 is lowered to the vertical part of the rear side and fits with the adjusting frame 20, the self-pushing plate 22 limits the adjusting frame 20, so that the position of the adjusting frame 20 remains unchanged, thereby ensuring that the clamping frame 9 on the right side can be stably immobilized after rotating 180°. Then, as shown in the first embodiment, the detection work can be carried out.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A textile fabric air permeability testing device, comprising a testing platform (1), and a support frame (4) mounted on the upper middle portion of the rear side of the testing platform (1), wherein the upper bottom surface of the support frame (4) is connected to a horizontal plate (7) via an electric push rod (6), and characterized in that: Two detection tubes (8) are symmetrically installed inside the transverse plate (7), two detection slots (2) are symmetrically provided on the upper surface of the detection platform (1), an air supply mechanism is installed in the detection platform (1) below the detection slots (2), a carrier frame (12) is installed on both the left and right sides of the detection platform (1), a clamping frame (9) is installed on one side of the carrier frame (12) through a mounting rod (10), a synchronous clamping control component for controlling the clamping of the fabric by the clamping frame (9) is connected to the front side of the detection platform (1), a control rod (11) is installed at the right end of the right mounting rod (10), and the right end of the control rod (11) is connected to the self-rotation control component.

2. The air permeability testing device for textile fabrics according to claim 1, characterized in that: An arc-shaped groove (3) is provided in the middle of the upper surface of the detection platform (1), and a display control mechanism (5) is installed above the support frame (4).

3. The air permeability testing device for textile fabrics according to claim 1, characterized in that: An airflow sensor (81) is installed inside the detection tube (8), a sealing ring (82) is fixed to the outer side of the lower end of the detection tube (8), and the outer diameter of the detection tube (8) is smaller than the diameter of the corresponding detection slot (2) directly below.

4. The air permeability testing device for textile fabrics according to claim 1, characterized in that: The air supply mechanism comprises a fan (16) installed in the detection platform (1); an air inlet pipe (13) installed on the front side of the fan (16) penetrates the front side of the detection platform (1); a flow equalizing pipe (17) with a "Y"-shaped structure is installed at the upper air outlet of the fan (16); both ends of the flow equalizing pipe (17) penetrate into the bottom ends of the two detection slots (2); and the vertical center line of the flow equalizing pipe (17), the vertical center line of the air outlet of the fan (16), and the vertical center line of the detection platform (1) are all on the same vertical line.

5. The air permeability testing device for textile fabrics according to claim 1, characterized in that: The mounting rod (10) on the left side is fixedly connected to the bearing frame (12) on the left side, and the mounting rod (10) on the right side is rotatably connected to the bearing frame (12) on the right side.

6. The air permeability testing device for textile fabrics according to claim 1, characterized in that: The synchronous clamping control assembly comprises a bidirectional screw rod (14) which is installed in a groove provided on the front side of the detection platform (1); the outer side of the bidirectional screw rod (14) is symmetrically threadedly connected to two connecting frames (15); an adjusting ring (18) is fixed to the outer end of the connecting frame (15); and the adjusting ring (18) is sleeved and slidably mounted on the outer side of the mounting rod (10).

7. The air permeability testing device for textile fabrics according to claim 6, characterized in that: The clamping frame (9) is provided with an extrusion fixing plate (91) inside, a vertical rod (93) installed above the extrusion fixing plate (91) penetrates the upper surface of the clamping frame (9), and a return spring (94) is nested and connected to the upper outer side of the vertical rod (93), a connecting plate (92) is fixed above a row of vertical rods (93), the upper surface of the extrusion fixing plate (91) is arranged in an inclined shape, and a regulating plate (19) in an inverted "L" shaped structure is fitted on the upper surface of the extrusion fixing plate (91), and the extrusion fixing plate (91) forms a lifting structure through the regulating plate (19); One end of the regulating plate (19) away from the extrusion fixing plate (91) passes through the outer side surface of the clamping frame (9) and is in close contact with one side surface of the regulating ring (18). The regulating plate (19) forms a sliding structure through the regulating ring (18). Slide blocks (191) installed on the front and rear sides of the regulating plate (19) are slidably connected to the grooves in the clamping frame (9).

8. The air permeability testing device for textile fabrics according to claim 1, characterized in that: The self-rotation control assembly comprises a motor, and the right end of the control rod (11) is connected to the motor via a coupling.

9. The air permeability testing device for textile fabrics according to claim 1, characterized in that: The self-rotation control assembly comprises a transmission gear (111) key-connected to the outside of the control rod (11); a rack assembly (21) is meshedly connected below the transmission gear (111); an adjustment frame (20) in an "L" shape is installed at the rear end of the rack assembly (21); a self-pushing plate (22) with an inclined bottom surface is fixed to the upper right side of the transverse plate (7); the lower part of the self-pushing plate (22) is arranged in contact with the upper part of the adjustment frame (20); the adjustment frame (20) forms a front-rear sliding structure through the self-pushing plate (22); a limit slide bar (23) is installed on the rear side of the detection platform (1); the outer side of the limit slide bar (23) passes through the interior of the adjustment frame (20); and the front end of the limit slide bar (23) passes through and is nested with a connecting spring (231).

10. A method for detecting air permeability of textile fabrics according to any one of claims 1 to 9, comprising the following steps: S1: placing a textile fabric on a testing table (1), and then placing the left and right sides of the textile fabric into two clamping frames (9) respectively, and controlling the two clamping frames (9) to clamp the left and right sides of the textile fabric simultaneously through a synchronous clamping control component; S2: Then, the right clamping frame (9) is controlled to rotate 180° by the self-rotation control component, so that the right side of the textile fabric is turned 180°, and the front side of the right side of the textile fabric faces downward, while the front side of the left side of the textile fabric still faces upward; S3: The horizontal plate (7) then drives the two detection tubes (8) to descend and cooperate with the two detection slots (2), and then air is supplied through the air supply mechanism to simultaneously detect the air permeability of the front and back sides of the textile fabric.

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