Breathability detection device for textile fabric

Abstract

The utility model discloses a textile fabric air permeability detection device which comprises a base and a detection table, the top end of the base is fixedly connected with the detection table, a portal frame is erected outside the base, a fan is fixed at the top end of the portal frame, an air outlet of the fan is connected with a cloth cover, and the bottom end of the cloth cover is connected with an air cover. The bottom end of the fan cover is fixedly connected with a pressing plate. The air permeability detection device for the textile fabric is provided with a fan, a cloth cover, a fixed frame, an air volume sensor, a display panel, an air pressure sensor, an air cover, a fixed toothed rail, a gear, a driving motor and a movable toothed rail, and the fan is mounted at a portal frame, so that when air is blown to the fabric, the influence of resonance on airflow is reduced to the greatest extent, the problem of unstable air pressure caused by turbulent flow is reduced, and the air permeability of the textile fabric is improved. The guide plate in the pressing plate has a uniform air distribution function, and accurate air permeability data is obtained according to a calculation formula by detecting different air pressures and air volumes of wind power above and below the cloth, so that the problem of low detection precision is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of textile fabrics, in particular to an air permeability detection device for textile fabrics. Background Art

[0002] There are many methods for testing the air permeability of textile fabrics, the most common of which is the differential pressure method: the air permeability is evaluated by measuring the pressure difference established on both sides of the fabric in a specific area. Usually, the air flow through the fabric is measured under a specified pressure difference within a certain period of time, and a larger air flow indicates better air permeability.

[0003] In the above detection method, there are two major difficulties in measuring fabrics. First, because the fan blows directly at the fabric, the resonance generated by the device that fixes the fan and the components that fix the fabric will cause unstable wind pressure, turbulence, etc., which will affect the uneven wind pressure in various parts of the fabric, and the error of the detected results is large; secondly, the detection of air volume also needs to be observed by the naked eye or assisted by observation. For example, CN202221965375.8 discloses a breathable textile fabric air permeability detection device. Through the design of multiple breathable boxes and streamers, the air permeability of various parts of the textile fabric can be tested. The accuracy of this detection method of observing the air volume with the naked eye is far from meeting the actual detection requirements.

[0004] Therefore, a device for detecting the air permeability of textile fabrics is needed to solve the above technical defects. Utility Model Content

[0005] The utility model aims to provide a device for detecting air permeability of textile fabrics, so as to solve the problem of low detection accuracy proposed in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for detecting air permeability of textile fabrics, comprising a base and a detection platform, the top of the base is fixedly connected to the detection platform, a gantry is set up on the outside of the base, a fan is fixed on the top of the gantry, an air outlet of the fan is connected to a cloth cover, the bottom of the cloth cover is connected to a wind cover, the bottom of the wind cover is fixedly connected to a pressure plate, the pressure plate is located directly above the detection platform, a stand is fixed on the right side of the top of the base, a drive motor is fixedly connected to the rear end of the stand, a gear is fixedly connected to the output shaft of the drive motor, a movable rack and a fixed rack are respectively meshed and connected on the left and right sides of the gear, a fixed seat is fixedly connected to the top of the movable rack, a fixed frame is fixedly connected to the left side of the fixed seat, the fixed frame is fixed to the outside of the cloth cover, and an air volume sensor and a wind pressure sensor are installed on the inner wall of the detection platform and the inner wall of the cloth cover.

[0007] Preferably, a guide plate is fixedly connected inside the pressure plate, and the size of the guide plate matches the inner diameter of the detection platform.

[0008] Preferably, the gantry is erected around the base and does not contact the base, and a display panel is installed on the left side wall of the gantry.

[0009] Preferably, the diameter of the pressing plate is larger than the inner diameter of the detection table, and both the pressing plate and the detection table are disc-shaped members with hollow upper and lower parts.

[0010] Preferably, a linear cylinder is fixedly connected to the rear end inside the base, the output end of the linear cylinder is fixedly connected with a slider, tracks are fixedly connected to the peripheries inside the base, and the sliders are respectively embedded in the tracks at corresponding positions for movement.

[0011] Preferably, four groups of sliders are provided and are annularly distributed around the center of the detection table. Two through grooves are respectively formed in each slider, and each group of through grooves is vertically and crosswise distributed. A guide rod is movably connected between adjacent two groups of sliders.

[0012] Preferably, the guide rods are embedded in the through grooves, and the four guide rods form a "mouth" - shaped structure.

[0013] Preferably, a moving block is fixedly connected to the top of each slider, a small cylinder is fixedly connected to the top of each moving block, and a pressing block is fixedly sleeved on one side of the small cylinder.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The air permeability detection device for textile fabrics not only makes the detection process more accurate, realizes unified tension adjustment, is convenient for better comparing air permeability values, but also realizes automatic fixing of fabrics, eliminating the errors caused by manual fabric placement;

[0015] (1) By providing a fan, a cloth cover, a fixing frame, an air volume sensor, a display panel, a wind pressure sensor, a wind hood, a fixed tooth rail, a gear, a driving motor, and a moving tooth rail, after the fabric is fixed on the detection table, the driving motor drives the gear to rotate, driving the moving tooth rail to push downwards, and the fixing frame drives the wind hood to move downwards, so that the pressing plate presses the fabric on the detection table. The fan is installed on the gantry. When blowing air on the fabric, the influence of resonance on the air flow is minimized, and the problem of unstable wind pressure caused by turbulence is reduced. The flow - guiding plate in the pressing plate has the function of evenly distributing air. An air volume sensor and a wind pressure sensor are respectively arranged in the wind hood and the detection table. By detecting the different wind pressures and air volumes above and below the fabric, accurate air permeability data are obtained according to the calculation formula, and the entire detection process is more accurate;

[0016] (2) The fabric is placed on the testing table by setting a pressing plate, a pressing block, a small cylinder, and a moving block. The moving mechanism in the base drives the four groups of moving blocks to move relatively to the top of the fabric. The small cylinder is started to press the pressing block down to the edge of the fabric. Then the linear cylinder is started. The four groups of linear cylinders move slightly outward again for a short distance to tighten the fabric from four directions to maintain the surface tension. The detection of each group of fabrics has a unified tension adjustment, which is convenient for better comparison of air permeability values.

[0017] (3) By setting up a moving block, a linear cylinder, a slider, a through slot, a guide rod, and a track, the linear cylinder drives the slider to move toward the center of the detection table in the track. Under the limit action of the oblique through slot, the guide rod pushes the other three groups of sliders to move toward the center of the detection table synchronously, thereby realizing four-directional movement, thereby driving the clamping and opening of the moving block, realizing automatic fixing of the fabric, ensuring that the detection process eliminates the errors caused by manual placement of the fabric, and the detection automation level is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 This is a bottom view structural diagram of the slider of the utility model;

[0020] Figure 3 This is a schematic diagram of the top view structure of the guide plate of the utility model;

[0021] Figure 4 It is a front view structural schematic diagram of the movable rack of the utility model.

[0022] In the figure: 1. gantry; 2. fan; 3. cloth cover; 4. fixed frame; 5. air volume sensor; 6. display panel; 7. wind pressure sensor; 8. wind cover; 9. pressure plate; 10. pressure block; 11. small cylinder; 12. moving block; 13. base; 14. testing table; 15. stand; 16. fixed rack; 17. gear; 18. drive motor; 19. moving rack; 20. fixed seat; 21. linear cylinder; 22. slider; 23. through groove; 24. guide rod; 25. track; 26. guide plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-4A device for detecting air permeability of textile fabrics comprises a base 13 and a detection platform 14, wherein the top of the base 13 is fixedly connected to the detection platform 14, a gantry 1 is arranged outside the base 13, a fan 2 is fixedly arranged on the top of the gantry 1, a cloth cover 3 is connected to the air outlet of the fan 2, a wind cover 8 is connected to the bottom of the cloth cover 3, a pressing plate 9 is fixedly connected to the bottom of the wind cover 8, and the pressing plate 9 is located directly above the detection platform 14, a stand 15 is fixedly arranged on the right side of the top of the base 13, a driving motor 18 is fixedly connected to the rear end of the stand 15, and a gear 17 is fixedly connected to the output shaft of the driving motor 18, and the gear The left and right sides of 17 are respectively meshed and connected with a movable rack 19 and a fixed rack 16, the top of the movable rack 19 is fixedly connected with a fixed seat 20, the left side of the fixed seat 20 is fixedly connected with a fixed frame 4, the fixed frame 4 is fixed to the outside of the cloth cover 3, the inner wall of the detection platform 14 and the inner wall of the cloth cover 3 are both installed with an air volume sensor 5 and an air pressure sensor 7, the inner side of the pressure plate 9 is fixedly connected with a guide plate 26, the size of the guide plate 26 matches the inner diameter of the detection platform 14, the gantry 1 is erected around the base 13 and does not contact the base 13, and the left side wall of the gantry 1 is installed with a display panel 6;

[0025] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, after the fabric is fixed on the testing platform 14, the gear 17 is driven to rotate by the driving motor 18, driving the movable rack 19 to push down, and the fixed frame 4 drives the wind hood 8 to move downward, so that the pressure plate 9 presses down the fabric on the testing platform 14, and the fan 2 is installed at the gantry 1. When blowing air to the fabric, the influence of resonance on the airflow is minimized to the greatest extent, and the problem of unstable wind pressure caused by turbulence is reduced. The guide plate 26 in the pressure plate 9 has the function of evenly distributing air. A group of air volume sensors 5 and wind pressure sensors 7 are respectively arranged in the wind hood 8 and the testing platform 14. By detecting the different wind pressures and air volumes above and below the fabric, accurate air permeability data can be obtained according to the measurement formula.

[0026] Embodiment 2: The diameter of the pressing plate 9 is larger than the inner diameter of the testing platform 14. The pressing plate 9 and the testing platform 14 are both hollow disc-shaped components. A group of moving blocks 12 are fixedly connected to the top of the slider 22. A group of small cylinders 11 are fixedly connected to the top of the moving blocks 12. A pressing block 10 is fixedly sleeved on one side of the small cylinder 11.

[0027] Specifically, Figure 1 and Figure 2 As shown, the fabric is placed on the testing table 14, and the moving mechanism in the base 13 drives the four groups of moving blocks 12 to move relatively to the top of the fabric, and the small cylinder 11 is started to press the pressing block 10 down to the edge of the fabric, and then the linear cylinder 21 is started. The four groups of linear cylinders 21 move slightly outward for a short distance again, and the fabric is tightened from four directions to maintain the surface tension. The detection of each group of fabrics has a uniform tension adjustment.

[0028] Embodiment 3: A linear cylinder 21 is fixedly connected to the rear end of the base 13, and a slider 22 is fixedly connected to the output end of the linear cylinder 21. Tracks 25 are fixedly connected to the base 13 on all sides. The sliders 22 are respectively embedded in the tracks 25 at corresponding positions and move. Four groups of sliders 22 are provided and are distributed in a ring shape about the center of the detection table 14. Two groups of through grooves 23 are opened in each slider 22. Each group of through grooves 23 is cross-distributed up and down. A group of guide rods 24 is movably connected between two adjacent groups of sliders 22. The guide rods 24 are embedded in the through grooves 23. The four groups of guide rods 24 form a "mouth" structure.

[0029] Specifically, Figure 1 and Figure 2 As shown, the linear cylinder 21 drives the slider 22 to move toward the center of the detection table 14 in the track 25. Under the limiting action of the obliquely arranged through slot 23, the guide rod 24 pushes the other three groups of sliders 22 to move toward the center of the detection table 14 synchronously, realizing four-directional movement, thereby driving the clamping and opening of the moving block 12, realizing automatic fixing of the fabric, and ensuring that the detection process eliminates the errors caused by manual placement of the fabric.

[0030] Working principle: Place the fabric to be tested on the testing table 14, and the linear cylinder 21 drives the slider 22 to move toward the center of the testing table 14 in the track 25. Under the limiting action of the obliquely arranged through slot 23, the guide rod 24 pushes the other three groups of sliders 22 to move toward the center of the testing table 14 synchronously, realizing four-way movement, thereby driving the moving block 12 to drive the four groups of moving blocks 12 to move relatively to the top of the fabric, start the small cylinder 11 to press the pressing block 10 down to the edge of the fabric, and then start the linear cylinder 21 to open the four groups of moving blocks 12. The four groups of linear cylinders 21 move slightly outward for a short distance again, tighten the fabric from four directions, maintain surface tension, and the detection of each group of fabrics has a unified tension adjustment, and the fabric is solid. After being fixed on the testing platform 14, the gear 17 is driven to rotate by the driving motor 18, and the movable rack 19 is pushed down. The fixed frame 4 drives the wind hood 8 to move downward, so that the pressure plate 9 presses down the cloth on the testing platform 14. The fan 2 is installed at the gantry 1. When blowing air to the fabric, the influence of resonance on the airflow is minimized to the greatest extent, and the problem of unstable wind pressure caused by turbulence is reduced. The guide plate 26 in the pressure plate 9 has the function of evenly distributing air. A group of air volume sensors 5 and wind pressure sensors 7 are respectively arranged in the wind hood 8 and the testing platform 14. By detecting the different wind pressures and air volumes above and below the cloth, accurate air permeability data is obtained according to the measurement formula, and the measurement results are displayed in real time on the display panel 6 through the software.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A device for detecting air permeability of textile fabrics, comprising a base (13) and a detection platform (14), characterized in that: The top of the base (13) is fixedly connected to a testing platform (14); a gantry (1) is mounted outside the base (13); a fan (2) is fixedly connected to the top of the gantry (1); an air outlet of the fan (2) is connected to a cloth cover (3); the bottom of the cloth cover (3) is connected to a wind cover (8); the bottom of the wind cover (8) is fixedly connected to a pressure plate (9); the pressure plate (9) is located directly above the testing platform (14); a stand (15) is fixedly connected to the right side of the top of the base (13); a rear end of the stand (15) is fixedly connected to a driving device A motor (18), the output shaft of the driving motor (18) is fixedly connected to a gear (17), the left and right sides of the gear (17) are respectively meshed with a movable rack (19) and a fixed rack (16), the top of the movable rack (19) is fixedly connected to a fixed seat (20), the left side of the fixed seat (20) is fixedly connected to a fixed frame (4), the fixed frame (4) is fixed to the outside of the cloth cover (3), and the inner wall of the detection platform (14) and the inner wall of the cloth cover (3) are both installed with an air volume sensor (5) and an air pressure sensor (7).

2. The air permeability detection device for textile fabrics according to claim 1, characterized in that: A guide plate (26) is fixedly connected inside the pressure plate (9), and the size of the guide plate (26) matches the inner diameter of the detection platform (14).

3. The air permeability detection device for textile fabrics according to claim 1, characterized in that: The gantry (1) is erected around the base (13) and does not contact the base (13), and a display panel (6) is installed on the left side wall of the gantry (1).

4. The air permeability detection device for textile fabrics according to claim 1, characterized in that: The diameter of the pressing plate (9) is larger than the inner diameter of the detection platform (14); the pressing plate (9) and the detection platform (14) are both disc-shaped components that are hollow in the upper and lower parts.

5. The air permeability detection device for textile fabrics according to claim 1, characterized in that: A linear cylinder (21) is fixedly connected to the rear end of the base (13), a slider (22) is fixedly connected to the output end of the linear cylinder (21), rails (25) are fixedly connected to the base (13) on all sides, and the sliders (22) are respectively embedded in the rails (25) at corresponding positions to move.

6. The air permeability detection device for textile fabrics according to claim 5, characterized in that: The sliders (22) are provided in four groups and are distributed in a ring shape about the center of the detection platform (14). Two groups of through grooves (23) are provided in each of the sliders (22). Each group of through grooves (23) is cross-distributed up and down. A group of guide rods (24) are movably connected between two adjacent groups of sliders (22).

7. The air permeability detection device for textile fabrics according to claim 6, characterized in that: The guide rods (24) are embedded in the through grooves (23), and four groups of guide rods (24) form a "mouth" structure.

8. The air permeability detection device for textile fabrics according to claim 5, characterized in that: The top of each slider (22) is fixedly connected to a group of moving blocks (12), the top of each moving block (12) is fixedly connected to a group of small cylinders (11), and one side of each small cylinder (11) is fixedly sleeved with a pressure block (10).

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