A multi-performance set intelligent testing device for knitted fabric

Abstract

The application relates to the technical field of testing devices, in particular to a multi-performance collection intelligent testing device for knitted cloth, which comprises air permeability testing devices, wear resistance testing devices, tear strength testing devices and a control center; the air permeability testing devices, the wear resistance testing devices and the tear strength testing devices are electrically connected with the control center; the air permeability testing devices, the wear resistance testing devices and the tear strength testing devices jointly output the detected data to the control center; and the control center evaluates the overall performance of the knitted cloth according to the comprehensive data.

Description

Technical Field

[0001] This invention relates to the field of testing device technology, and in particular discloses a multi-performance integrated intelligent testing device for knitted fabrics. Background Technology

[0002] In the current booming development of the knitted fabric industry, accurate performance evaluation is crucial for product quality control, R&D innovation, and market application expansion. However, the field of knitted fabric performance testing currently faces many challenges. Traditional testing methods are often limited to the independent testing of single properties, making it difficult to form a comprehensive and integrated evaluation of the overall performance of knitted fabrics. In terms of abrasion resistance testing, existing equipment can usually only simulate friction under planar conditions, failing to accurately reproduce the abrasion resistance performance of knitted fabrics under complex conditions such as bending and folding that they may encounter in actual use. The sealing structure of air permeability testing devices is not perfect, easily leading to gas leakage, affecting the accuracy of gas flow measurement, and lacking effective monitoring and adjustment of inlet pressure. Tear strength testing devices have relatively limited functionality, making it difficult to meet the needs of testing the tear strength of knitted fabrics under different temperature conditions, and failing to provide reliable data on the performance of knitted fabrics in different usage environments. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a multi-performance intelligent testing device for knitted fabrics.

[0004] To achieve the above objectives, the present invention provides a multi-performance integrated intelligent testing device for knitted fabrics, comprising an air permeability testing device, an abrasion resistance testing device, a tear strength testing device, and a control center; the air permeability testing device, the abrasion resistance testing device, and the tear strength testing device are all electrically connected to the control center, and the air permeability testing device, the abrasion resistance testing device, and the tear strength testing device output the test data to the control center, and the control center comprehensively evaluates the overall performance of the knitted fabric based on the integrated data;

[0005] The wear resistance testing device includes a frame, a first drive unit mounted on the frame, a friction testing unit, and a first image acquisition unit. The friction testing unit includes a first moving guide rail, a first moving seat reciprocating on the first moving guide rail, a first friction component mounted on the first moving seat, and a first worktable mounted on the frame. The first worktable is used to place the knitted fabric to be tested, and the friction surface of the first friction component is in close contact with the surface of the knitted fabric placed on the first worktable. The first drive unit is connected to the first moving seat, and the first drive unit drives the first moving seat to reciprocate on the first moving guide rail, thereby causing the first friction component to reciprocate and rub the knitted fabric to be tested placed on the first worktable. The first image acquisition unit is mounted on the first friction component to acquire images of the rubbed knitted fabric and transmit them back to the control center.

[0006] This invention relates to a multi-performance integrated intelligent testing device for knitted fabrics. Through electrical connections between an air permeability testing device, an abrasion resistance testing device, a tear strength testing device, and a control center, it achieves joint output of test data to the control center and overall performance evaluation, possessing the advantages of integrated multi-performance testing and intelligent evaluation. Specifically, the abrasion resistance testing device's frame is equipped with a first drive unit, a friction testing unit, and a first image acquisition unit. A first moving seat is reciprocated on a first moving guide rail of the friction testing unit. A first friction component on the first moving seat is in close contact with the surface of the knitted fabric to be tested on the first worktable. The first drive unit drives the first moving seat to move the first friction component to reciprocate and rub the knitted fabric. Simultaneously, the first image acquisition unit acquires images of the rubbed knitted fabric and transmits them back to the control center, thereby completing the abrasion resistance testing and data feedback. Through the coordinated operation of its components, this device achieves efficient and accurate testing and intelligent comprehensive evaluation of the multiple properties of knitted fabrics.

[0007] The first worktable has an arc-shaped protrusion with multiple sets of fixing holes on its side. The knitted fabric to be tested is fixed to the arc-shaped protrusion through the fixing holes for testing its abrasion resistance under bending conditions. The first friction assembly includes a fixing block on the first movable seat, an adjustment assembly on the fixing block, and a first friction component connected to the adjustment assembly. The adjustment assembly includes a guide plate on the fixing block and a first driving member on the guide plate. The guide plate has a guide groove with an internal thread. The output end of the first driving member has a screw, which is screwed downward to the internal thread of the guide plate. The bottom of the screw is connected to the first friction component. When the first driving member drives the screw to rotate, it drives the first friction component to move up and down along the guide plate through the threaded transmission, thereby adjusting the contact pressure between the first friction component and the surface of the knitted fabric fixed on the arc-shaped protrusion.

[0008] By setting an arc-shaped protrusion and side fixing holes on the first worktable, the knitted fabric to be tested is fixed on the arc-shaped protrusion, which can effectively test its abrasion resistance under bending conditions. This closely matches the actual use scenario of knitted fabric and improves the practicality of the test results. The adjustment component in the first friction assembly consists of a guide plate, a first driving component, etc. The first driving component drives the screw to rotate, and the first friction component moves up and down along the guide plate through the screw drive, thereby achieving precise adjustment of the contact pressure between the first friction component and the surface of the knitted fabric to meet different testing needs. In this way, it can simulate the real situation of knitted fabric bending and use, and flexibly control the friction pressure, making the abrasion resistance test more realistic, accurate and reliable, and improving the applicability of the testing device and the accuracy of the test results.

[0009] The first drive unit includes a rotary motor, a rotary disk connected to the output end of the rotary motor, and a first transmission rod connected to the rotary disk; the other end of the first transmission rod away from the rotary disk is connected to a first movable seat. The rotary motor drives the rotary disk to rotate, which in turn drives the first transmission rod to reciprocate, thereby driving the first movable seat to reciprocate on the first movable guide rail.

[0010] This first drive unit adopts a combined structure of a rotary motor, a rotating disk, and a first transmission rod. The rotary motor drives the rotating disk to rotate, and the first transmission rod converts the circular motion into reciprocating oscillation, which in turn drives the first moving seat to make stable reciprocating motion on the first moving guide rail. This provides a continuous and stable driving force for the first friction component, ensuring the regularity and consistency of the friction action when testing the abrasion resistance of knitted fabrics, effectively improving the stability and reliability of the test. In specific implementation, the rotary motor is installed, and its output end is connected to the rotating disk. One end of the first transmission rod is connected to the rotating disk, and the other end is connected to the first moving seat. Starting the rotary motor enables the reciprocating motion of the first moving seat on the guide rail, providing power for the abrasion resistance test of knitted fabrics. The structure is simple, the transmission is efficient, and it is easy to implement and maintain.

[0011] The air permeability detection device includes a base, a sealing component mounted on the base, an air inlet component mounted above the sealing component, an air outlet component mounted below the sealing component, and a gas flow sensor mounted on the air outlet component. The knitted fabric to be tested is placed inside the sealing component. The air inlet component delivers gas into the sealing component. After the gas passes through the knitted fabric to be tested, it is discharged through the air outlet component. The gas flow sensor measures the flow rate of the discharged gas and transmits the data to the control center.

[0012] The air permeability testing device, through the coordinated operation of its components, offers the advantage of accurately and efficiently testing the air permeability of knitted fabrics. In practice, the knitted fabric to be tested is placed within a sealed assembly on a base. An air inlet assembly supplies gas into the sealed assembly, which then passes through the fabric and exits via an air outlet assembly. A gas flow sensor on the outlet assembly measures the flow rate of the exiting gas in real time and transmits the data to a control center. This design accurately quantifies the air permeability of the knitted fabric. The sealed assembly ensures that gas exits only through the fabric, guaranteeing the accuracy of the test data. The coordination of the air inlet and outlet assemblies with the gas flow sensor enables a complete testing process from gas input to data output, making the air permeability testing process standardized and efficient, and providing reliable air permeability data support for the overall performance evaluation of knitted fabrics.

[0013] The sealing assembly includes an upper housing and a lower housing. A snap-fit ​​post is provided at the connection between the upper housing and the lower housing. The lower housing has a snap-fit ​​hole for receiving the snap-fit ​​post. A first guide post is also provided on the base. A first sleeve is provided on the side of the upper housing. The upper housing moves up and down on the first guide post via the first sleeve to approach or move away from the lower housing. The sealing assembly also includes a first fixing seat for fixing the knitted fabric to be tested. The first fixing seat has a limiting notch on its side and a limiting protrusion on the inner side wall of the lower housing. The first fixing seat is snapped into the lower housing via the limiting notch. The first fixing seat includes a first annular portion, a second annular portion, and a first pressing ring. A first annular protrusion is provided on the first annular portion. A first annular groove for receiving the first annular protrusion is provided on the side of the second annular portion close to the first annular portion. A second annular groove is provided on the side of the second annular portion away from the first annular portion. The knitted fabric to be tested is placed on the second annular groove of the second annular portion. The first pressing ring is placed into the second annular groove to press and fix the knitted fabric to be tested.

[0014] The upper housing moves on the first guide post of the base with the aid of the first sleeve, approaching or separating from the lower housing. The engagement of the locking post and the locking hole ensures a stable connection between the two, guaranteeing a tight seal during testing. The first fixing seat is engaged and fixed with the limiting protrusion inside the lower housing through the limiting notch. The knitted fabric to be tested is placed in the second annular groove of the second annular portion, and then the first pressing ring is placed in the groove. The engagement of the first annular protrusion of the first annular portion and the first annular groove of the second annular portion allows the first pressing ring to stably press the knitted fabric, preventing gas leakage from the fabric fixing point. This design not only facilitates the installation and removal of the knitted fabric, but also, through multiple sealing and fixing structures, prevents gas escape from affecting the test results. This ensures that gas can only be discharged through the air vents of the knitted fabric during the air permeability test, thereby improving the accuracy and reliability of the air permeability test data.

[0015] The tear strength testing device includes a frame, a second guide column mounted on the frame, an impact mechanism that reciprocates on the second guide column, a second fixed seat located below the impact mechanism, and a drive mechanism mounted on the side of the frame. The fabric to be tested is fixed on the second fixed seat. The drive mechanism is connected to the impact mechanism, and the drive mechanism drives the impact mechanism to reciprocate on the second guide column to move closer to or away from the second fixed seat to perform an impact test on the fabric to be tested on the second fixed seat. The impact mechanism is also equipped with a second image acquisition unit, which acquires image data of the tested fabric after the impact test and transmits it back to the control center.

[0016] The fabric to be tested is fixed to a second mounting base on the frame. A drive mechanism is connected to an impact mechanism, which reciprocates along a second guide post, moving the fabric closer to or away from the second mounting base to conduct an impact test. During the test, a second image acquisition unit on the impact mechanism acquires real-time image data of the impacted fabric and transmits the data back to the control center promptly. This device can simulate the tearing of fabric under impact in actual use, providing intuitive data for subsequent analysis through image acquisition. This makes the tear strength testing of knitted fabrics more realistic and reliable, providing crucial data support for the comprehensive evaluation of knitted fabric performance.

[0017] The impact mechanism includes an impact plate, a second sleeve mounted on the impact plate, an impact head mounted at the bottom of the impact plate, and a first rotating wheel mounted on the impact plate. The drive mechanism includes a first drive motor and a second rotating wheel connected to the output end of the first drive motor. Belts are mounted on the first and second rotating wheels. The first drive motor drives the second rotating wheel to rotate, thus achieving the winding and unwinding of the belt. The second sleeve is fitted onto a second guide post. The impact plate slides up and down along the axial direction of the second guide post through the sleeve-fitting engagement between the second sleeve and the second guide post. When the belt is wound up, it drives the first rotating wheel to rotate, thereby pulling the impact plate upward along the second guide post. When the belt is unwound, the impact plate slides downward along the second guide post under its own gravity, thus achieving the impact action of the impact head on the fabric to be tested.

[0018] The second sleeve on the impact plate is fitted onto the second guide post. The output of the first drive motor is connected to the second rotating wheel, which is connected to the second rotating wheel via a belt. When the first drive motor is started, it drives the second rotating wheel to rotate. When the belt is wound up, it drives the first rotating wheel to rotate and pulls the impact plate upwards along the second guide post. When the belt is unwound, the impact plate slides down the second guide post under its own weight, and the impact head at the bottom impacts the fabric to be tested, which is fixed to the second fixed seat. During this process, the second image acquisition unit simultaneously acquires image data of the fabric after the impact and transmits it back to the control center. This combination of belt drive and gravity-based descent not only allows for flexible control of the lifting and lowering of the impact mechanism and stable impact action, but also allows for adjustment of the impact force and frequency by adjusting the motor speed, making tear strength testing more suitable for diverse testing needs and improving the comprehensiveness and accuracy of the test results.

[0019] The second fixing base is equipped with a temperature adjustment unit, which includes a heating wire and a temperature sensor. The heating wire is evenly distributed inside the second fixing base and is used to heat the fabric to be tested fixed on the second fixing base. The temperature sensor is electrically connected to the control center to monitor the temperature of the fabric to be tested in real time and transmit the data to the control center. The control center automatically adjusts the working power of the heating wire according to the preset test temperature requirements to control the temperature of the fabric to be tested, so as to realize the test of the tear strength of knitted fabric under different temperature conditions.

[0020] Heating wires are evenly arranged inside the second mounting base. Once the fabric to be tested is fixed to the second mounting base, the heating wires can heat it. A temperature sensor is electrically connected to the control center to monitor the fabric temperature in real time and transmit data. The control center intelligently adjusts the heating wire power according to the preset test temperature requirements. For example, when the preset high-temperature test conditions are met, the control center increases the heating wire power for rapid temperature rise; if the temperature is too high, the power is reduced to ensure the fabric temperature is accurately maintained at the set value. In this way, the device can simulate the usage scenarios of knitted fabrics under different temperature environments, realizing tear strength testing under multiple temperature conditions. This provides more comprehensive and accurate data for evaluating the performance of knitted fabrics in complex environments, enhancing the practicality of the testing device and the application value of the test results.

[0021] The tear strength testing device also includes a first buffer device and a second buffer device installed on the frame; the first buffer device is installed at the top of the second guide post, and the second buffer device is installed at the end of the second guide post; both the first buffer device and the second buffer device include a buffer spring and buffer pads installed at both ends of the buffer spring. When the impact mechanism slides upward to the top or downward to the end along the second guide post, the buffer pads contact the impact mechanism or the frame, and the buffer spring is compressed to reduce the impact force of the impact mechanism on the frame.

[0022] A first buffer device and a second buffer device are installed at the top and bottom of the second guide column of the frame, respectively. Each buffer device consists of a buffer spring and buffer pads at both ends. When the impact mechanism slides rapidly along the second guide column to the top or bottom, the buffer pads first contact the impact mechanism or the frame. Subsequently, the buffer spring is compressed, converting the kinetic energy of the impact mechanism into the elastic potential energy of the spring, effectively slowing down the movement speed of the impact mechanism and greatly reducing its impact force on the frame. This not only avoids damage to equipment parts caused by severe impact and extends the service life of the testing device, but also reduces vibration interference during the testing process, ensures the accuracy of the impact test, makes the tear strength test results of knitted fabrics more reliable, and also reduces equipment maintenance costs and enhances the overall performance of the testing device.

[0023] The intake assembly also includes an intake pressure sensor and an intelligent regulating valve that are electrically connected to the control center. Both the intake pressure sensor and the intelligent regulating valve are installed on the intake pipe. The intake pressure sensor is used to monitor the gas pressure entering the sealing assembly in real time and transmit the pressure data to the control center. When the real-time pressure exceeds the preset threshold range, the control center sends a control command to the intelligent regulating valve to adjust the pressure value.

[0024] The inclusion of an intake pressure sensor and an intelligent regulating valve in the intake assembly provides precise pressure control for testing the breathability of knitted fabrics. In practice, the intake pressure sensor and intelligent regulating valve are installed on the intake pipe and electrically connected to the control center. During testing, the intake pressure sensor monitors the gas pressure entering the sealing assembly in real time and transmits the data to the control center promptly. If the real-time pressure exceeds a preset threshold, the control center quickly sends a control command to the intelligent regulating valve, which automatically adjusts the intake air volume to bring the gas pressure back to the appropriate range. This ensures the stability and accuracy of the gas pressure during breathability testing, preventing pressure fluctuations from affecting the test results, making the breathability test data for knitted fabrics more reliable, and improving the intelligence and precision of the testing device in breathability testing.

[0025] Breathability testing and analysis involves measuring the gas flow rate through the knitted fabric per unit time using a gas flow sensor. This, combined with the test area and pressure difference, quantifies the breathability performance. The system receives gas flow sensor data (Q, unit: L / min) and test area data (A, unit: cm²). 2 Parameters such as intake pressure (P, unit: Pa) and air permeability (G) are also considered. The formula for calculating air permeability (G) is: Wherein, ΔP is the pressure difference (Pa) between the two sides of the sealing component, which is usually determined by the difference between the intake pressure and the atmospheric pressure; the result is in units of L / (cm2·Pa·min), and the larger the value of air permeability (G), the better the air permeability.

[0026] Abrasion resistance testing and analysis involves analyzing the wear degree of a knitted fabric through reciprocating friction, combined with image acquisition, to evaluate its abrasion resistance. The abrasion image is received from the first image acquisition unit, and image processing algorithms (such as edge detection and pixel comparison) are used to identify the wear area. The wear rate is calculated by combining parameters such as the number of friction cycles (N), friction pressure (F, unit: N), and friction stroke (S, unit: cm). The formula for calculating the wear rate (W) is:

[0027] Area of ​​wear zone (cm²) 2 ), extracted by image analysis algorithm, A0: area of ​​initial test region (cm²) 2 Abrasion resistance index (K) comprehensive formula: The higher the K value, the stronger the wear resistance, taking into account both friction conditions and the degree of wear.

[0028] Tear strength detection and analysis involves applying impact force to the fabric using an impact head, and then analyzing the tear area or tear force using image acquisition to assess the tear strength. The system receives tear images from a second image acquisition unit and identifies the tear length (L, unit: mm) or tear area (A_t, unit: mm). 2 The tear strength is calculated by combining parameters such as impact energy (E, unit: J) and temperature (T, unit: ℃). The formula for calculating tear strength (T_s) is: Fmax: Maximum tearing force (N) during the impact process, calculated from the parameters of the drive mechanism and the impact speed; L: Tear length (mm).

[0029] The control center's comprehensive evaluation logic normalizes the data: parameters such as air permeability, abrasion resistance index, and tear strength are converted into dimensionless indices ranging from 0 to 100. Weights are assigned to each performance metric based on the intended use of the knitted fabric (e.g., clothing, industrial fabrics) (e.g., air permeability 30%, abrasion resistance index 40%, tear strength 30%). The Comprehensive Performance Index (CPI) formula is: CPI = W1 × G′ + W2 × K′ + W3 × Ts′; where W1, W2, and W3 are the weights for each performance metric. A higher CPI indicates better overall performance of the knitted fabric.

[0030] The beneficial effects of this invention are as follows: This invention achieves intelligent comprehensive evaluation of multiple properties of knitted fabrics through the collaborative design of air permeability, abrasion resistance, and tear strength testing devices and a control center. Its core principle is as follows: the air permeability testing device uses a gas flow sensor and pressure control components to quantify the fabric's air permeability; the abrasion resistance testing device uses an arc-shaped protrusion to simulate bending, combined with an adjustable pressure friction component and image acquisition, to evaluate abrasion resistance performance; the tear strength testing device uses a temperature-controlled impact mechanism and buffer components, combined with image analysis, to obtain tear data. Each device normalizes the test data and transmits it to the control center, where a weighted calculation generates a comprehensive performance index (CPI). The integration of multiple devices enables one-stop testing, improving efficiency; the arc-shaped protrusion and temperature control structural design fit actual usage scenarios, enhancing the practicality of the testing; pressure control and image acquisition technologies ensure data accuracy; the intelligent evaluation system provides quantitative basis for fabric research and development and quality control, promoting the optimization and application expansion of knitted fabric performance. Attached Figure Description

[0031] Figure 1 This is a diagram illustrating the overall logical framework of the present invention.

[0032] Figure 2 This is a schematic diagram of the wear resistance testing device of the present invention;

[0033] Figure 3 This is a schematic diagram of the friction testing unit of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the first friction assembly of the present invention;

[0035] Figure 5 This is a schematic diagram of the air permeability detection device of the present invention;

[0036] Figure 6 This is an exploded view of the first fixing base of the present invention;

[0037] Figure 7 This is a cross-sectional view of the lower housing of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the second annular portion of the present invention;

[0039] Figure 9 This is a schematic diagram of the tear strength testing device of the present invention;

[0040] Figure 10 This is a schematic diagram of the tear strength testing device of the present invention from another perspective;

[0041] Figure 11 This is a schematic diagram of the structure of the second fixing base of the present invention.

[0042] The reference numerals in the figures include:

[0043] 1. Air permeability testing device; 2. Abrasion resistance testing device; 3. Tear strength testing device; 4. Frame; 5. First drive unit; 6. Friction testing unit; 7. First image acquisition unit; 8. First moving guide rail; 9. First moving seat; 11. First friction assembly; 12. First worktable; 13. Arc-shaped protrusion; 14. Fixing hole; 15. Fixing block; 16. Adjustment assembly; 17. First friction component; 18. Guide plate; 19. First drive component; 21. Guide groove; 22. Screw; 23. Rotary motor; 24. Rotating disk; 25. First transmission rod; 26. Base; 27. Sealing assembly; 28. Air inlet assembly; 29. ​​Air outlet assembly; 31. Gas flow sensor; 32. Upper housing; 33. Lower housing; 34. Snap-fit ​​post; 35. Snap-fit ​​hole; 3 6. First guide post; 37. First sleeve; 38. First fixed seat; 39. Limiting notch; 41. Limiting protrusion; 42. First annular part; 43. Second annular part; 44. First clamping ring; 45. First annular protrusion; 46. First annular groove; 47. Second annular groove; 48. Frame; 49. Second guide post; 51. Impact mechanism; 52. Second fixed seat; 53. Drive mechanism; 54. Second image acquisition unit; 55. Impact plate; 56. Second sleeve; 57. Impact head; 58. First rotating wheel; 59. First drive motor; 61. Second rotating wheel; 62. Heating wire; 63. Temperature sensor; 64. First buffer device; 65. Second buffer device; 66. Buffer spring; 67. Buffer pad; 68. Intake pressure sensor; 69. Intelligent regulating valve. Detailed Implementation

[0044] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0045] Please see Figures 1 to 11 As shown, the present invention provides a multi-performance integrated intelligent testing device for knitted fabrics, comprising an air permeability testing device 1, an abrasion resistance testing device 2, a tear strength testing device 3, and a control center; the air permeability testing device 1, the abrasion resistance testing device 2, and the tear strength testing device 3 are all electrically connected to the control center, and the air permeability testing device 1, the abrasion resistance testing device 2, and the tear strength testing device 3 output the tested data to the control center, which then integrates the various data to evaluate the overall performance of the knitted fabric;

[0046] The wear resistance testing device 2 includes a frame 4, a first drive unit 5, a friction testing unit 6, and a first image acquisition unit 7 mounted on the frame 4. The friction testing unit 6 includes a first moving guide rail 8, a first moving seat 9 reciprocatingly mounted on the first moving guide rail 8, a first friction component 11 mounted on the first moving seat 9, and a first worktable 12 mounted on the frame 4. The first worktable 12 is used to place the knitted fabric to be tested, and the friction surface of the first friction component 11 is in close contact with the surface of the knitted fabric placed on the first worktable 12. The first drive unit 5 is connected to the first moving seat 9, and the first drive unit 5 drives the first moving seat 9 to reciprocate on the first moving guide rail 8, thereby causing the first friction component 11 to reciprocate and rub the knitted fabric to be tested placed on the first worktable 12. The first image acquisition unit 7 is mounted on the first friction component 11 to acquire images of the rubbed knitted fabric to be tested and transmit them back to the control center.

[0047] The present invention provides a multi-performance integrated intelligent testing device for knitted fabrics. Through electrical connections between the air permeability testing device 1, the abrasion resistance testing device 2, the tear strength testing device 3, and the control center, it achieves joint output of test data to the control center and overall performance evaluation, possessing the advantages of integrated multi-performance testing and intelligent evaluation. Specifically, the frame 4 of the abrasion resistance testing device 2 is equipped with a first drive unit 5, a friction testing unit 6, and a first image acquisition unit 7. A first moving seat 9 is reciprocated on the first moving guide rail 8 of the friction testing unit 6. The first friction component 11 on the first moving seat 9 is in close contact with the surface of the knitted fabric to be tested on the first worktable 12. The first drive unit 5 drives the first moving seat 9 to reciprocate the friction component 11 against the knitted fabric. Simultaneously, the first image acquisition unit 7 acquires images of the rubbed knitted fabric and transmits them back to the control center, thereby completing the abrasion resistance testing and data feedback. Through the coordinated operation of its components, this device achieves efficient and accurate testing and intelligent comprehensive evaluation of the multi-performance of knitted fabrics.

[0048] The first workbench 12 is provided with an arc-shaped protrusion 13, and the side of the arc-shaped protrusion 13 is provided with multiple sets of fixing holes 14. The knitted fabric to be tested is fixed on the arc-shaped protrusion 13 through the fixing holes 14 for testing the wear resistance under bending conditions. The first friction assembly 11 includes a fixing block 15 disposed on the first movable seat 9, an adjustment assembly 16 disposed on the fixing block 15, and a first friction component 17 connected to the adjustment assembly 16. The adjustment assembly 16 includes a guide plate 18 disposed on the fixing block 15 and a first friction component 17 disposed on the guide plate 18. The first driving member 19 has a guide groove 21 on the guide plate 18, and an internal thread in the guide groove 21. The output end of the first driving member 19 is provided with a screw 22, which is screwed downward to the internal thread of the guide plate 18. The bottom of the screw 22 is connected to the first friction component 17. When the first driving member 19 drives the screw 22 to rotate, it drives the first friction component 17 to move up and down along the guide plate 18 through the thread transmission, thereby adjusting the contact pressure between the first friction component 17 and the surface of the knitted fabric fixed on the arc protrusion 13.

[0049] By setting an arc-shaped protrusion 13 and side fixing holes 14 on the first worktable 12, the knitted fabric to be tested is fixed on the arc-shaped protrusion 13, which can effectively test its abrasion resistance under bending conditions, closely matching the actual use scenario of the knitted fabric and improving the practicality of the test results. The adjustment component 16 in the first friction component 11 consists of a guide plate 18, a first driving component 19, etc. The first driving component 19 drives the screw 22 to rotate, and uses thread transmission to move the first friction component 17 up and down along the guide plate 18, thereby achieving precise adjustment of the contact pressure between the first friction component 17 and the surface of the knitted fabric to meet different testing needs. In this way, it can simulate the real situation of the knitted fabric bending and use, and flexibly control the friction pressure, making the abrasion resistance test more realistic, accurate and reliable, improving the applicability of the testing device and the accuracy of the test results.

[0050] The first drive unit 5 includes a rotary motor 23, a rotary disk 24 connected to the output end of the rotary motor 23, and a first transmission rod 25 connected to the rotary disk 24. The other end of the first transmission rod 25 away from the rotary disk 24 is connected to the first movable seat 9. The rotary motor 23 drives the rotary disk 24 to rotate, which in turn drives the first transmission rod 25 to reciprocate, thereby driving the first movable seat 9 to reciprocate on the first movable guide rail 8.

[0051] This first drive unit 5 adopts a combination structure of a rotary motor 23, a rotating disk 24, and a first transmission rod 25. The rotary motor 23 drives the rotating disk 24 to rotate, and the first transmission rod 25 converts the circular motion into reciprocating oscillation, thereby driving the first moving seat 9 to make stable reciprocating motion on the first moving guide rail 8. This provides a continuous and stable driving force for the first friction assembly 11, ensuring the regularity and consistency of the friction action when testing the abrasion resistance of knitted fabrics, and effectively improving the stability and reliability of the test. In specific implementation, the rotary motor 23 is installed, and its output end is connected to the rotating disk 24. One end of the first transmission rod 25 is connected to the rotating disk 24, and the other end is connected to the first moving seat 9. Starting the rotary motor 23 realizes the reciprocating motion of the first moving seat 9 on the guide rail, providing power for the abrasion resistance test of knitted fabrics. The structure is simple, the transmission is efficient, and it is easy to implement and maintain.

[0052] The air permeability detection device 1 includes a base 26, a sealing component 27 disposed on the base 26, an air inlet component 28 disposed above the sealing component 27, an air outlet component 29 disposed below the sealing component 27, and a gas flow sensor 31 disposed on the air outlet component 29. The knitted fabric to be tested is placed inside the sealing component 27. The air inlet component 28 delivers gas into the sealing component 27. After the gas passes through the knitted fabric to be tested, it is discharged through the air outlet component 29. The gas flow sensor 31 measures the flow rate of the discharged gas and transmits the data to the control center.

[0053] The air permeability testing device 1, through the coordinated operation of its components, offers the advantage of accurately and efficiently testing the air permeability of knitted fabrics. In practice, the knitted fabric to be tested is placed inside the sealing component 27 of the base 26. The air inlet component 28 supplies gas into the sealing component 27. After passing through the knitted fabric, the gas is discharged through the air outlet component 29. The gas flow sensor 31 on the air outlet component 29 measures the flow rate of the discharged gas in real time and transmits the data to the control center. This design can accurately quantify the air permeability of the knitted fabric. The sealing component 27 ensures that gas is discharged only through the knitted fabric, guaranteeing the accuracy of the test data. The cooperation between the air inlet and outlet components 29 and the gas flow sensor 31 realizes a complete testing process from gas input to data output, making the air permeability testing process standardized and efficient, and providing reliable air permeability data support for the overall performance evaluation of knitted fabrics.

[0054] The sealing assembly 27 includes an upper housing 32 and a lower housing 33. A snap-fit ​​post 34 is provided at the connection between the upper housing 32 and the lower housing 33. The lower housing 33 has a snap-fit ​​hole 35 for accommodating the snap-fit ​​post 34. A first guide post 36 is also provided on the base 26. A first sleeve 37 is provided on the side of the upper housing 32. The upper housing 32 moves up and down on the first guide post 36 via the first sleeve 37 to move closer to or further away from the lower housing 33. The sealing assembly 27 also includes a first fixing seat 38 for fixing the knitted fabric to be tested. The first fixing seat 38 has a limiting notch 39 on its side, and a limiting protrusion is provided on the inner side wall of the lower housing 33. 41. The first fixing seat 38 is engaged in the lower housing 33 via the limiting notch 39. The first fixing seat 38 includes a first annular portion 42, a second annular portion 43 and a first pressing ring 44. The first annular portion 42 is provided with a first annular protrusion 45. The second annular portion 43 is provided with a first annular groove 46 for accommodating the first annular protrusion 45 on the side close to the first annular portion 42. The second annular portion 43 is provided with a second annular groove 47 on the side away from the first annular portion 42. The knitted fabric to be tested is placed on the second annular groove 47 of the second annular portion 43. The first pressing ring 44 is placed into the second annular groove 47 to press and fix the knitted fabric to be tested.

[0055] The upper housing 32 moves on the first guide post 36 of the base 26 via the first sleeve 37, approaching or separating from the lower housing 33. The engagement of the locking post 34 and the locking hole 35 ensures a stable connection between the two, guaranteeing a tight seal during testing. The first fixing seat 38 is engaged and fixed to the limiting protrusion 41 inside the lower housing 33 via the limiting notch 39. The knitted fabric to be tested is placed in the second annular groove 47 of the second annular portion 43, and then the first pressing ring 44 is placed in the groove. The engagement of the first annular protrusion 45 of the first annular portion 42 and the first annular groove 46 of the second annular portion 43 ensures that the first pressing ring 44 stably presses the knitted fabric, preventing gas leakage from the fabric fixing point. This design not only facilitates the installation and removal of the knitted fabric but also prevents gas from escaping and affecting the test results through multiple sealing and fixing structures. This ensures that gas can only be discharged through the air vents of the knitted fabric during the air permeability test, thereby improving the accuracy and reliability of the air permeability test data.

[0056] The tear strength testing device 3 includes a frame 48, a second guide post 49 mounted on the frame 48, an impact mechanism 51 that reciprocates on the second guide post 49, a second fixed seat 52 located below the impact mechanism 51, and a drive mechanism 53 mounted on the side of the frame 48. The fabric to be tested is fixed on the second fixed seat 52. The drive mechanism 53 is connected to the impact mechanism 51. The drive mechanism 53 drives the impact mechanism 51 to reciprocate on the second guide post 49 to move closer to or away from the second fixed seat 52 to perform an impact test on the fabric to be tested on the second fixed seat 52. The impact mechanism 51 is also equipped with a second image acquisition unit 54. The second image acquisition unit 54 acquires image data of the tested fabric that has undergone the impact test and transmits it back to the control center.

[0057] The fabric to be tested is fixed to the second fixed seat 52 on the frame 48. The drive mechanism 53 is connected to the impact mechanism 51. By driving the impact mechanism 51 to reciprocate on the second guide post 49, it moves the fabric closer to or away from the second fixed seat 52, thereby conducting an impact test on the fabric. During the test, the second image acquisition unit 54 on the impact mechanism 51 acquires image data of the impacted fabric in real time and transmits the data back to the control center promptly. This device can simulate the impact tearing of fabric in actual use, providing intuitive data for subsequent analysis through image acquisition, making the tear strength test of knitted fabric more realistic and reliable, and providing key data support for the comprehensive evaluation of knitted fabric performance.

[0058] The impact mechanism 51 includes an impact plate 55, a second sleeve 56 disposed on the impact plate 55, an impact head 57 disposed at the bottom of the impact plate 55, and a first rotating wheel 58 disposed on the impact plate 55. The drive mechanism 53 includes a first drive motor 59 and a second rotating wheel 61 connected to the output end of the first drive motor 59. A belt is sleeved on the first rotating wheel 58 and the second rotating wheel 61. The first drive motor 59 drives the second rotating wheel 61 to rotate to realize the winding and unwinding of the belt. The second sleeve 56 is sleeved on the second guide post 49. The impact plate 55 slides up and down along the axial direction of the second guide post 49 through the sleeved engagement between the second sleeve 56 and the second guide post 49. When the belt is wound up, it drives the first rotating wheel 58 to rotate, thereby pulling the impact plate 55 to slide upward along the second guide post 49. When the belt is unwound, the impact plate 55 slides downward along the second guide post 49 under its own gravity, realizing the impact action of the impact head 57 on the fabric to be tested.

[0059] The second sleeve 56 on the impact plate 55 is fitted onto the second guide post 49. The output end of the first drive motor 59 is connected to the second rotating wheel 61. The first rotating wheel 58 and the second rotating wheel 61 are connected by a belt. The first drive motor 59 is started to drive the second rotating wheel 61 to rotate. When the belt is wound up, it drives the first rotating wheel 58 to rotate and pulls the impact plate 55 upward along the second guide post 49. When the belt is unwound, the impact plate 55 slides down the second guide post 49 under its own weight, and the impact head 57 at the bottom impacts the fabric to be tested, which is fixed on the second fixed seat 52. During this process, the second image acquisition unit 54 simultaneously acquires image data of the fabric after the impact and transmits it back to the control center. This combination of belt drive and gravity-driven descent not only allows for flexible control of the lifting and lowering of the impact mechanism 51 and stable impact action, but also allows for adjustment of the impact force and frequency by adjusting the motor speed, making tear strength testing more suitable for diverse testing needs and improving the comprehensiveness and accuracy of the test results.

[0060] The second fixing base 52 is equipped with a temperature adjustment unit, which includes a heating wire 62 and a temperature sensor 63. The heating wire 62 is evenly distributed inside the second fixing base 52 and is used to heat the fabric to be tested fixed on the second fixing base 52. The temperature sensor 63 is electrically connected to the control center to monitor the temperature of the fabric to be tested in real time and transmit the data to the control center. The control center automatically adjusts the working power of the heating wire 62 according to the preset test temperature requirements to control the temperature of the fabric to be tested, so as to realize the test of the tear strength of the knitted fabric under different temperature conditions.

[0061] Heating wires 62 are evenly arranged inside the second fixing base 52. After the fabric to be tested is fixed on the second fixing base 52, the heating wires 62 can heat it. A temperature sensor 63 is electrically connected to the control center to monitor the fabric temperature in real time and transmit data. The control center intelligently adjusts the working power of the heating wires 62 according to the preset test temperature requirements. For example, when the preset high-temperature test conditions are met, the control center increases the power of the heating wires 62 to rapidly raise the temperature; if the temperature is too high, the power is reduced to ensure that the fabric temperature is accurately maintained at the set value. In this way, the device can simulate the usage scenarios of knitted fabrics under different temperature environments, realize tear strength testing under multiple temperature conditions, provide more comprehensive and accurate data for evaluating the performance of knitted fabrics in complex environments, and improve the practicality of the testing device and the application value of the test results.

[0062] The tear strength testing device 3 also includes a first buffer device 64 and a second buffer device 65 disposed on the frame 48; the first buffer device 64 is disposed at the top of the second guide post 49, and the second buffer device 65 is disposed at the end of the second guide post 49; both the first buffer device 64 and the second buffer device 65 include a buffer spring 66 and buffer pads 67 disposed at both ends of the buffer spring 66. When the impact mechanism 51 slides upward to the top or downward to the end along the second guide post 49, the buffer pads 67 contact the impact mechanism 51 or the frame 48, and the buffer spring 66 is compressed to reduce the impact force of the impact mechanism 51 on the frame 48.

[0063] A first buffer device 64 and a second buffer device 65 are respectively installed at the top and bottom of the second guide post 49 of the frame 48. Each buffer device consists of a buffer spring 66 and buffer pads 67 at both ends. When the impact mechanism 51 slides rapidly along the second guide post 49 to the top or bottom, the buffer pads 67 first contact the impact mechanism 51 or the frame 48. Subsequently, the buffer spring 66 is compressed, converting the kinetic energy of the impact mechanism 51 into the elastic potential energy of the spring, effectively slowing down the movement speed of the impact mechanism 51 and greatly reducing its impact force on the frame 48. This not only avoids damage to equipment parts caused by severe impact and extends the service life of the testing device, but also reduces vibration interference during the testing process, ensures the accuracy of the impact test action, makes the test results of the knitted fabric tear strength more reliable, and also reduces equipment maintenance costs and enhances the overall performance of the testing device.

[0064] The intake assembly 28 also includes an intake pressure sensor 68 and an intelligent regulating valve 69 electrically connected to the control center. Both the intake pressure sensor 68 and the intelligent regulating valve 69 are installed on the intake pipe. The intake pressure sensor 68 is used to monitor the gas pressure entering the sealing assembly 27 in real time and transmit the pressure data to the control center. When the real-time pressure exceeds the preset threshold range, the control center sends a control command to the intelligent regulating valve 69 to adjust the pressure value.

[0065] The inclusion of an intake pressure sensor 68 and an intelligent regulating valve 69 in the intake assembly 28 provides precise pressure control for testing the breathability of knitted fabrics. In practice, the intake pressure sensor 68 and intelligent regulating valve 69 are installed on the intake pipe and electrically connected to the control center. During testing, the intake pressure sensor 68 monitors the gas pressure entering the sealing assembly 27 in real time and transmits the data to the control center promptly. If the real-time pressure exceeds a preset threshold, the control center quickly sends a control command to the intelligent regulating valve 69, which automatically adjusts the intake air volume to bring the gas pressure back to the appropriate range. This ensures the stability and accuracy of the gas pressure during breathability testing, avoids pressure fluctuations affecting the test results, makes the breathability test data of knitted fabrics more reliable, and improves the intelligence and precision of the testing device in breathability testing.

[0066] The air permeability test and analysis measures the gas flow rate through the knitted fabric per unit time using a gas flow sensor 31. Combined with the test area and pressure difference, the air permeability is quantified. The system receives data from the gas flow sensor 31 (Q, unit: L / min) and the test area (A, unit: cm²). 2 Parameters such as intake pressure (P, unit: Pa) and air permeability (G) are also considered. The formula for calculating air permeability (G) is: Wherein, ΔP is the pressure difference (Pa) between the two sides of the sealing component 27, which is usually determined by the difference between the intake pressure and the atmospheric pressure; the result is in units of L / (cm2·Pa·min), and the larger the value of air permeability (G), the better the air permeability.

[0067] Abrasion resistance testing and analysis involves analyzing the wear degree of a knitted fabric through reciprocating friction, combined with image acquisition, to evaluate abrasion resistance. The abrasion image is received from the first image acquisition unit 7, and image processing algorithms (such as edge detection and pixel comparison) are used to identify the wear area. The wear rate is calculated by combining parameters such as the number of friction cycles (N), friction pressure (F, unit: N), and friction stroke (S, unit: cm). The formula for calculating the wear rate (W) is:

[0068] Area of ​​wear zone (cm²) 2 ), extracted by image analysis algorithm, A0: area of ​​initial test region (cm²) 2 Abrasion resistance index (K) comprehensive formula: The higher the K value, the stronger the wear resistance, taking into account both friction conditions and the degree of wear.

[0069] Tear strength detection and analysis involves applying impact force to the fabric using the impact head 57, and then analyzing the tear area or tear force using image acquisition to assess the tear strength. The tear image is received from the second image acquisition unit 54, and the tear length (L, unit: mm) or tear area (A_t, unit: mm) is identified.2 The tear strength is calculated by combining parameters such as impact energy (E, unit: J) and temperature (T, unit: ℃). The formula for calculating tear strength (T_s) is: Fmax: Maximum tearing force (N) during the impact process, calculated from the parameters of the drive mechanism and the impact speed; L: Tear length (mm).

[0070] The control center's comprehensive evaluation logic normalizes the data: parameters such as air permeability, abrasion resistance index, and tear strength are converted into dimensionless indices ranging from 0 to 100. Weights are assigned to each performance metric based on the intended use of the knitted fabric (e.g., clothing, industrial fabrics) (e.g., air permeability 30%, abrasion resistance index 40%, tear strength 30%). The Comprehensive Performance Index (CPI) formula is: CPI = W1 × G′ + W2 × K′ + W3 × Ts′; where W1, W2, and W3 are the weights for each performance metric. A higher CPI indicates better overall performance of the knitted fabric.

[0071] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0072] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A multi-performance integrated intelligent testing device for knitted fabrics, characterized in that: It includes an air permeability testing device (1), an abrasion resistance testing device (2), a tear strength testing device (3), and a control center; the air permeability testing device (1), the abrasion resistance testing device (2), and the tear strength testing device (3) are all electrically connected to the control center. The air permeability testing device (1), the abrasion resistance testing device (2), and the tear strength testing device (3) output the tested data to the control center. The control center integrates the data to evaluate the overall performance of the knitted fabric. The wear resistance testing device (2) includes a frame (4), a first drive unit (5), a friction testing unit (6), and a first image acquisition unit (7) mounted on the frame (4). The friction testing unit (6) includes a first moving guide rail (8), a first moving seat (9) reciprocating on the first moving guide rail (8), a first friction component (11) mounted on the first moving seat (9), and a first worktable (12) mounted on the frame (4). The first worktable (12) is used to place the knitted fabric to be tested. The friction surface of the first friction component (11) is in close contact with the surface of the knitted fabric placed on the first worktable (12). The first drive unit (5) is connected to the first moving seat (9). The first drive unit (5) drives the first moving seat (9) to reciprocate on the first moving guide rail (8) to drive the first friction component (11) to reciprocate and rub the knitted fabric to be tested placed on the first worktable (12). The first image acquisition unit (7) is mounted on the first friction component (11) to acquire images of the rubbed knitted fabric to be tested and transmit them back to the control center. The first workbench (12) is provided with an arc-shaped protrusion (13), and the side of the arc-shaped protrusion (13) is provided with multiple sets of fixing holes (14). The knitted fabric to be tested is fixed on the arc-shaped protrusion (13) through the fixing holes (14) for testing the wear resistance performance in a bending state; the first friction assembly (11) includes a fixing block (15) provided on the first moving seat (9), an adjustment assembly (16) provided on the fixing block (15), and a first friction component (17) connected to the adjustment assembly (16). The adjustment assembly (16) includes a guide plate (18) provided on the fixing block (15) and a first friction component (17) provided on the guide plate (18). The first driving member (19) is provided with a guide groove (21) on the guide plate (18), and an internal thread is provided in the guide groove (21). The output end of the first driving member (19) is provided with a screw (22). The screw (22) is screwed downward to the internal thread of the guide plate (18), and the bottom of the screw (22) is connected to the first friction component (17). When the first driving member (19) drives the screw (22) to rotate, it drives the first friction component (17) to move up and down along the guide plate (18) through the thread transmission, thereby adjusting the contact pressure between the first friction component (17) and the knitted fabric surface fixed on the arc protrusion (13).

2. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 1, characterized in that: The first drive unit (5) includes a rotary motor (23), a rotary disk (24) connected to the output end of the rotary motor (23), and a first transmission rod (25) connected to the rotary disk (24). The other end of the first transmission rod (25) away from the rotary disk (24) is connected to the first movable seat (9). The rotary motor (23) drives the rotary disk (24) to rotate, which in turn drives the first transmission rod (25) to swing back and forth, thereby driving the first movable seat (9) to move back and forth on the first movable guide rail (8).

3. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 1, characterized in that: The air permeability detection device (1) includes a base (26), a sealing component (27) disposed on the base (26), an air inlet component (28) disposed above the sealing component (27), an air outlet component (29) disposed below the sealing component (27), and a gas flow sensor (31) disposed on the air outlet component (29). The knitted fabric to be tested is placed inside the sealing component (27), the air inlet component (28) delivers gas to the sealing component (27), the gas passes through the knitted fabric to be tested and is discharged through the air outlet component (29), and the gas flow sensor (31) measures the flow rate of the discharged gas and transmits the data to the control center.

4. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 3, characterized in that: The sealing assembly (27) includes an upper housing (32) and a lower housing (33). A snap-fit ​​post (34) is provided at the connection between the upper housing (32) and the lower housing (33). The lower housing (33) is provided with a snap-fit ​​hole (35) for accommodating the snap-fit ​​post (34). A first guide post (36) is also provided on the base (26). A first sleeve (37) is provided on the side of the upper housing (32). The upper housing (32) moves up and down on the first guide post (36) via the first sleeve (37) to approach or move away from the lower housing (33). The sealing assembly (27) is also provided with a first fixing seat (38) for fixing the knitted fabric to be tested. A limiting notch (39) is provided on the side of the first fixing seat (38). A limiting protrusion is provided on the inner side wall of the lower housing (33). (41) The first fixing seat (38) is engaged in the lower housing (33) via the limiting notch (39). The first fixing seat (38) includes a first annular part (42), a second annular part (43) and a first pressing ring (44). The first annular part (42) is provided with a first annular protrusion (45). The second annular part (43) is provided with a first annular groove (46) for accommodating the first annular protrusion (45) on the side close to the first annular part (42). The second annular part (43) is provided with a second annular groove (47) on the side away from the first annular part (42). The knitted fabric to be tested is placed on the second annular groove (47) of the second annular part (43). The first pressing ring (44) is placed into the second annular groove (47) to press and fix the knitted fabric to be tested.

5. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 1, characterized in that: The tear strength testing device (3) includes a frame (48), a second guide column (49) set on the frame (48), an impact mechanism (51) that reciprocates on the second guide column (49), a second fixed seat (52) located below the impact mechanism (51), and a drive mechanism (53) set on the side of the frame (48). The fabric to be tested is fixed on the second fixed seat (52). The drive mechanism (53) is connected to the impact mechanism (51). The drive mechanism (53) drives the impact mechanism (51) to reciprocate on the second guide column (49) to approach or move away from the second fixed seat (52) to perform an impact test on the fabric to be tested on the second fixed seat (52). The impact mechanism (51) is also provided with a second image acquisition unit (54). The second image acquisition unit (54) acquires image data of the tested fabric that has undergone impact testing and transmits it back to the control center.

6. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 5, characterized in that: The impact mechanism (51) includes an impact plate (55), a second sleeve (56) disposed on the impact plate (55), an impact head (57) disposed at the bottom of the impact plate (55), and a first rotating wheel (58) disposed on the impact plate (55). The drive mechanism (53) includes a first drive motor (59) and a second rotating wheel (61) connected to the output end of the first drive motor (59). A belt is fitted on the first rotating wheel (58) and the second rotating wheel (61). The first drive motor (59) drives the second rotating wheel (61) to rotate to realize the belt... During winding and unwinding, the second sleeve (56) is fitted onto the second guide post (49). The impact plate (55) slides up and down along the axial direction of the second guide post (49) through the sleeve fit between the second sleeve (56) and the second guide post (49). When the belt is wound up, it drives the first wheel (58) to rotate, thereby pulling the impact plate (55) to slide upward along the second guide post (49). When the belt is unwound, the impact plate (55) slides downward along the second guide post (49) under its own gravity, thereby realizing the impact action of the impact head (57) on the fabric to be tested.

7. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 5, characterized in that: The second fixing base (52) is provided with a temperature adjustment unit, which includes a heating wire (62) and a temperature sensor (63). The heating wire (62) is evenly distributed inside the second fixing base (52) and is used to heat the fabric to be tested fixed on the second fixing base (52). The temperature sensor (63) is electrically connected to the control center to monitor the temperature of the fabric to be tested in real time and transmit the data to the control center. The control center automatically adjusts the working power of the heating wire (62) according to the preset test temperature requirements to control the temperature of the fabric to be tested and realize the test of the tear strength of the knitted fabric under different temperature conditions.

8. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 5, characterized in that: The tear strength testing device (3) further includes a first buffer device (64) and a second buffer device (65) disposed on the frame (48); the first buffer device (64) is disposed at the top of the second guide post (49), and the second buffer device (65) is disposed at the end of the second guide post (49); the first buffer device (64) and the second buffer device (65) both include a buffer spring (66) and a buffer pad (67) disposed at both ends of the buffer spring (66). When the impact mechanism (51) slides upward to the top or downward to the end along the second guide post (49), the buffer pad (67) contacts the impact mechanism (51) or the frame (48), and the buffer spring (66) is compressed to reduce the impact force of the impact mechanism (51) on the frame (48).

9. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 3, characterized in that: The intake assembly (28) also includes an intake pressure sensor (68) and an intelligent regulating valve (69) electrically connected to the control center. Both the intake pressure sensor (68) and the intelligent regulating valve (69) are installed on the intake pipe. The intake pressure sensor (68) is used to monitor the gas pressure entering the sealing assembly (27) in real time and transmit the pressure data to the control center. When the real-time pressure exceeds the preset threshold range, the control center sends a control command to the intelligent regulating valve (69) to adjust the pressure value.

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