Multi-performance integrated intelligent testing device for knitted fabric

Abstract

The invention relates to the technical field of testing devices, and particularly discloses a multi-performance integrated intelligent testing device for knitted fabric, which comprises an air permeability detection device, a wear resistance detection device, a tear strength detection device and a control center, the air permeability detection device, the wear resistance detection device and the tear strength detection device are all electrically connected with the control center, the air permeability detection device, the wear resistance detection device and the tear strength detection device jointly output detected data to the control center, and the control center synthesizes all the data to evaluate the overall performance of the knitted fabric.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices, and in particular discloses a multi-performance integrated intelligent testing device for knitted fabrics. Background Art

[0002] At a time when the knitted fabric industry is booming, accurate evaluation of its performance 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 independent testing of a single performance, making it difficult to form a comprehensive and integrated evaluation of the overall performance of knitted fabrics. In terms of wear resistance testing, existing equipment can usually only simulate friction conditions in a flat state, and cannot truly restore the wear resistance of knitted fabrics in complex conditions such as bending and folding that may be encountered in actual use; the sealing structure of the air permeability testing device is not perfect, and gas leakage is prone to occur, affecting the accuracy of gas flow measurement, and there is a lack of effective monitoring and regulation of the intake pressure; the tear strength testing device has a relatively simple function, which makes it difficult to meet the needs of testing the tear strength of knitted fabrics under different temperature conditions, and cannot provide a reliable basis for the performance of knitted fabrics in different usage environments. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the present invention aims to provide a multi-performance integrated 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, a wear resistance testing device, a tear strength testing device, and a control center. The air permeability testing device, the wear resistance testing device, and the tear strength testing device are all electrically connected to the control center. The air permeability testing device, the wear resistance testing device, and the tear strength testing device jointly output the test data to the control center, which comprehensively evaluates the overall performance of the knitted fabric based on the data.

[0005] The wear resistance testing device includes a frame, a first driving unit arranged on the frame, a friction testing unit and a first image acquisition unit. The friction testing unit includes a first movable guide rail, a first movable seat reciprocatingly arranged on the first movable guide rail, a first friction assembly arranged on the first movable seat and a first workbench arranged on the frame. The first workbench is used to place the knitted fabric to be tested, and the friction surface of the first friction assembly is in close contact with the surface of the knitted fabric placed on the first workbench; the first driving unit is connected to the first movable seat, and the first driving unit drives the first movable seat to reciprocate on the first movable guide rail, driving the first friction assembly to perform reciprocating friction on the knitted fabric to be tested placed on the first workbench. The first image acquisition unit is arranged on the first friction assembly to capture an image of the knitted fabric to be tested after friction and transmit it back to the control center.

[0006] The multi-performance integrated intelligent testing device for knitted fabrics of the present invention realizes the joint output of test data to the control center and overall performance evaluation through the electrical connection of the air permeability detection device, the wear resistance detection device, the tear strength detection device and the control center, and has the advantages of multi-performance integrated detection and intelligent evaluation. In specific implementation, the frame of the wear resistance detection device is provided with a first drive unit, a friction test unit and a first image acquisition unit, wherein a first movable seat is reciprocatingly arranged on the first movable guide rail of the friction test unit, and the first friction component on the first movable seat is in close contact with the surface of the knitted fabric to be tested on the first workbench. The first drive unit drives the first movable seat to drive the first friction component to reciprocate and rub the knitted fabric. At the same time, the first image acquisition unit captures the image of the knitted fabric after friction and transmits it back to the control center, thereby completing the wear resistance detection and data feedback. Through the coordinated operation of various components, the device realizes efficient and accurate detection and intelligent comprehensive evaluation of the multi-performance of knitted fabrics.

[0007] The first workbench is provided with an arc-shaped protrusion, and the side of the arc-shaped protrusion is provided with multiple groups of fixing holes. The knitted fabric to be tested is fixed on the arc-shaped protrusion via the fixing holes for testing its wear resistance in a bent state; the first friction assembly includes a fixed block arranged on the first movable seat, an adjustment assembly arranged on the fixed block, and a first friction component connected to the adjustment assembly, the adjustment assembly includes a guide plate arranged on the fixed block, a first driving member arranged on the guide plate, a guide groove is provided on the guide plate, an internal thread is provided in the guide groove, a screw is provided at the output end of the first driving member, the screw is screwed downwardly with the internal thread of the guide plate, and the bottom of the screw is connected to the first friction component; when the first driving member drives the screw to rotate, the first friction component is driven to move up and down along the guide plate through the thread transmission, so as to adjust the contact pressure between the first friction member and the surface of the knitted fabric fixed on the arc-shaped protrusion.

[0008] By providing an arc-shaped protrusion and side fixing holes on the first workbench and fixing the knitted fabric to be tested on the arc-shaped protrusion, its wear resistance in a bent state can be effectively tested, which is in line with the actual use scenario of the knitted fabric and improves the practicality of the test results. The adjustment component in the first friction component is composed of a guide plate, a first drive member, etc. The first drive member drives the screw to rotate, and uses threaded transmission to move the first friction component up and down along the guide plate, thereby achieving precise adjustment of the contact pressure between the first friction component and the surface of the knitted fabric to meet different testing requirements. In this way, it can simulate the actual situation of knitted fabric being bent and use, and can flexibly control the friction pressure, making the wear resistance test more practical, accurate and reliable, and improving the applicability of the testing device and the accuracy of the test results.

[0009] The first driving unit includes a rotating motor, a rotating disc connected to the output end of the rotating motor, and a first transmission rod connected to the rotating disc; the other end of the first transmission rod away from the rotating disc is connected to the first movable seat, the rotating motor drives the rotating disc to rotate, drives the first transmission rod to swing back and forth, and then drives the first movable seat to reciprocate on the first movable guide rail.

[0010] This first drive unit utilizes a combined structure of a rotary motor, a rotating disc, and a first transmission rod. The rotary motor drives the rotating disc, and the first transmission rod converts the circular motion into reciprocating swinging motion, thereby driving the first movable seat to perform stable reciprocating motion on the first movable guide rail. This provides continuous and stable driving force for the first friction component, ensuring the regularity and consistency of the friction action when testing the wear resistance of knitted fabrics, and effectively improving the stability and reliability of the test. During specific implementation, the rotary motor is installed, its output end is connected to the rotary disc, one end of the first transmission rod is connected to the rotating disc, and the other end is connected to the first movable seat. The rotary motor is started to achieve reciprocating motion of the first movable seat on the guide rail, providing power for knitted fabric wear resistance testing. The structure is simple and the transmission is efficient, making it easy to implement and maintain.

[0011] The air permeability detection device includes a base, a sealing assembly arranged on the base, an air inlet assembly arranged above the sealing assembly, an air outlet assembly arranged below the sealing assembly, and a gas flow sensor arranged on the air outlet assembly; the knitted cloth to be tested is placed in the sealing assembly, the air inlet assembly transports gas into the sealing assembly, and the gas passes through the knitted cloth to be tested and is discharged through the air outlet assembly. The gas flow sensor measures the flow of the exhausted gas and transmits the data to the control center.

[0012] The breathability testing device, through the coordinated work of its various components, has the advantage of accurately and efficiently testing the breathability of knitted fabrics. During specific implementation, the knitted fabric to be tested is placed within the sealing assembly of the base. The air intake assembly delivers gas into the sealing assembly, which then passes through the knitted fabric and is discharged through the air outlet assembly. The gas flow sensor on the air outlet assembly measures the flow of the exhaust gas in real time and transmits the data to the control center. This design can accurately quantify the breathability of the knitted fabric. The sealing assembly ensures that the gas is discharged only through the knitted fabric, ensuring the accuracy of the test data. The coordination of the air intake and outlet assemblies with the gas flow sensor realizes a complete testing process from gas input to data output, making the breathability performance testing process standardized and efficient, and providing reliable breathability data support for the overall performance evaluation of the knitted fabric.

[0013] The sealing assembly includes an upper shell and a lower shell, and a clamping column is provided at the connection between the upper shell and the lower shell, and the lower shell is provided with a clamping hole for accommodating the clamping column, and the base is also provided with a first guide column, and the side of the upper shell is provided with a first sleeve, and the upper shell moves back and forth up and down on the first guide column via the first sleeve to approach or move away from the lower shell; the sealing assembly is also provided with a first fixing seat for fixing the knitted fabric to be detected, the side of the first fixing seat is provided with a limiting notch, and the inner side wall of the lower shell is provided with a limiting protrusion, the first fixing seat is clamped in the lower shell via the limiting notch, the first fixing seat includes a first annular portion, a second annular portion and a first clamping ring, the first annular portion is provided with a first annular protrusion, the second annular portion is provided with a first annular groove for accommodating the first annular protrusion on a side close to the first annular portion, and the second annular portion is provided with a second annular groove on a side away from the first annular portion, the knitted fabric to be detected is placed on the second annular groove of the second annular portion, and the first clamping ring is placed in the second annular groove to press and fix the knitted fabric to be detected.

[0014] The upper shell is moved on the first guide post of the base with the help of the first sleeve, and approaches or separates from the lower shell. The cooperation of the clamping post and the clamping hole realizes a stable connection between the two, ensuring the sealing during detection. The first fixing seat is clamped and fixed with the limiting protrusion in the lower shell through the limiting notch, and the knitted cloth to be tested is placed in the second annular groove of the second annular part, and then the first clamping ring is placed in the groove. The first annular protrusion of the first annular part cooperates with the first annular groove of the second annular part to make the first clamping ring stably compress the knitted cloth to prevent gas leakage from the fixing point of the cloth. This design not only facilitates the installation and disassembly of the knitted cloth, but also prevents gas leakage from affecting the test results through multiple sealing and fixing structures, so that the gas can only be discharged through the air vents of the knitted cloth during the air permeability test, thereby improving the accuracy and reliability of the air permeability performance test data.

[0015] The tear strength testing device includes a frame, a second guide column arranged on the frame, an impact mechanism that reciprocates on the second guide column, a second fixed seat located below the impact mechanism, and a driving mechanism arranged on the side of the frame. The fabric to be tested is fixed on the second fixed seat. The driving mechanism is connected to the impact mechanism. The driving mechanism drives the impact mechanism to reciprocate on the second guide column to approach or move 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 provided with a second image acquisition unit, which collects image data of the test fabric that has undergone the impact test and transmits it back to the control center.

[0016] The fabric to be tested is secured to the second mounting bracket on the frame. A drive mechanism is connected to the impact mechanism, which is driven back and forth on the second guide post, moving it toward or away from the second mounting bracket, thereby impact testing the fabric. During the test, a second image acquisition unit on the impact mechanism captures real-time image data of the impacted fabric and transmits this data to the control center. This device simulates the impact tearing conditions experienced in actual use. This image acquisition provides intuitive data for subsequent analysis, making tear strength testing of knitted fabrics more realistic and reliable, and providing critical data support for comprehensive evaluation of knitted fabric performance.

[0017] The impact mechanism includes an impact plate, a second sleeve arranged on the impact plate, an impact head arranged at the bottom of the impact plate, and a first rotating wheel arranged on the impact plate. The driving mechanism includes a first driving motor and a second rotating wheel connected to the output end of the first driving motor. A belt is provided on the first rotating wheel and the second rotating wheel. The first driving motor drives the second rotating wheel to rotate to realize the winding and unwinding of the belt. The second sleeve is sleeved on the second guide column. The impact plate slides up and down along the axial direction of the second guide column through the sleeve cooperation of the second sleeve and the second guide column. When the belt is wound, it drives the first rotating wheel to rotate, thereby pulling the impact plate to slide upward along the second guide column. When the belt is unwound, the impact plate slides downward along the second guide column under the action of its own gravity, thereby realizing the impact action of the impact head on the fabric to be detected.

[0018] The second sleeve on the impact plate is mounted on the second guide post, and the output end of the first drive motor is connected to the second wheel. The first wheel and the second wheel are connected by a belt. The first drive motor is started to drive the second wheel to rotate. When the belt is reeled in, it drives the first wheel to rotate and pulls the impact plate to slide upward along the second guide post. When the belt is unreeled, the impact plate slides down along the second guide post under its own gravity, and the impact head at the bottom impacts the fabric to be tested, which is fixed on the second fixed seat. During this process, the second image acquisition unit synchronously collects image data of the fabric after the impact and transmits it back to the control center. This combination of belt drive and gravity drop can not only flexibly control the lifting and lowering of the impact mechanism and stably realize the impact action, but also adjust the impact force and frequency by adjusting the motor speed, etc., so that the tear strength test is more in line with diverse testing needs and improves the comprehensiveness and accuracy of the test results.

[0019] The second fixing seat is provided with a temperature regulating unit, which includes a heating wire and a temperature sensor. The heating wire is evenly distributed inside the second fixing seat and is used to heat the fabric to be tested fixed on the second fixing seat; the temperature sensor is electrically connected to the control center, monitors the temperature of the fabric to be tested in real time, and transmits 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, thereby realizing the test of the tear strength of the knitted fabric under different temperature conditions.

[0020] The heating wires are evenly arranged inside the second fixing base. After the fabric to be tested is fixed on the second fixing base, the heating wires can heat it. The temperature sensor establishes an electrical connection with 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 according to the preset test temperature requirements. For example, when the high-temperature test conditions are preset, the control center increases the power of the heating wires to quickly heat up; when 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 use scenarios of knitted fabrics in different temperature environments, realize tear strength testing under multiple temperature conditions, and provide more comprehensive and accurate data for evaluating the performance of knitted fabrics in complex environments, thereby improving the practicality of the detection device and the application value of the test results.

[0021] The tear strength detection device also includes a first buffer device and a second buffer device arranged on the frame; the first buffer device is arranged at the top end of the second guide column, and the second buffer device is arranged at the end of the second guide column; the first buffer device and the second buffer device both include a buffer spring and a buffer pad arranged at both ends of the buffer spring. When the impact mechanism slides upward to the top end or downward to the end along the second guide column, the buffer pad contacts 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 end 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 end, the buffer pad first contacts the impact mechanism or the frame. The buffer spring is then compressed, converting the kinetic energy of the impact mechanism into the elastic potential energy of the spring, effectively slowing the movement of the impact mechanism and greatly reducing its impact force on the frame. This not only avoids damage to equipment components caused by severe impact and extends the service life of the detection device, but also reduces vibration interference during the detection process, ensures the accuracy of the impact test action, and makes the knitted fabric tear strength test results more reliable. It also reduces equipment maintenance costs and enhances the overall performance of the detection device.

[0023] The air intake assembly also includes an air intake pressure sensor and an intelligent regulating valve electrically connected to the control center. The air intake pressure sensor and the intelligent regulating valve are both arranged on the air intake pipe. The air 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 instruction to the intelligent regulating valve to adjust the pressure value.

[0024] The installation of an intake pressure sensor and an intelligent regulating valve in the intake assembly ensures precise pressure control for testing the breathability of knitted fabrics. During implementation, the intake pressure sensor and the intelligent regulating valve are installed on the intake pipe and electrically connected to the control center. During the test, the intake pressure sensor monitors the pressure of the gas entering the sealing assembly in real time and transmits the data to the control center in a timely manner. Once the real-time pressure exceeds the preset threshold range, the control center quickly sends a control instruction to the intelligent regulating valve, which automatically adjusts the intake volume accordingly to return the gas pressure to the appropriate range. In this way, the stability and accuracy of the gas pressure during the permeability test are ensured, the test results are prevented from being affected by pressure fluctuations, the knitted fabric breathability test data is made more reliable, and the intelligence and precision of the test device in breathability testing are improved.

[0025] The gas flow rate sensor measures the gas flow rate per unit time through the knitted fabric, and quantifies the gas permeability by combining the test area and pressure difference. 2 ), inlet pressure (P, unit: Pa) and other parameters. The calculation formula of air permeability (G) is: Where ΔP is the pressure difference (Pa) on both sides of the sealing component, which is usually determined by the difference between the inlet pressure and the atmospheric pressure. The unit of the result is L / (cm2·Pa·min). The larger the value of the permeability (G), the better the permeability.

[0026] Wear resistance testing and analysis evaluates wear resistance by reciprocatingly rubbing the knitted fabric and analyzing the degree of wear in combination with image acquisition. The wear image from the first image acquisition unit is received and the worn area is identified using image processing algorithms (such as edge detection and pixel comparison). The wear rate is calculated by combining parameters such as the number of frictions (N), friction pressure (F, unit: N), and friction travel (S, unit: cm). The wear rate (W) calculation formula is:

[0027] Wear area (cm 2 ), extracted by image analysis algorithm, A0: initial test area (cm 2 ). Comprehensive formula for wear resistance index (K): The larger the K value, the stronger the wear resistance, taking into account the friction conditions and the degree of wear.

[0028] Tear strength detection and analysis: The impact head applies impact force to the fabric, and the tear area or tear force is analyzed in combination with image acquisition to evaluate the tear strength. The tear image from the second image acquisition unit is received, and the tear length (L, unit: mm) or tear area (A_t, unit: mm) is identified. 2 ). Combined with parameters such as impact energy (E, unit: J), temperature (T, unit: ℃), etc., the tear strength is calculated. The calculation formula for tear strength (T_s) is: Fmax: Maximum tearing force during impact (N), converted from drive mechanism parameters and impact speed, L: Tear length (mm).

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

[0030] Beneficial effects of the present invention: The present invention realizes the intelligent comprehensive evaluation of multiple properties of knitted fabrics through the collaborative design of air permeability, wear resistance, and tear strength detection devices and the control center. Its core principle is: the air permeability detection device uses a gas flow sensor and a pressure control component to quantify the air permeability of the fabric; the wear resistance detection device simulates the bending state through arc-shaped protrusions, combined with a friction component with adjustable pressure and image acquisition to evaluate the wear resistance; the tear strength detection device uses a temperature-controllable impact mechanism and a buffer component, combined with image analysis to obtain tearing data. Each device normalizes the detection data and transmits it to the control center, and a comprehensive performance index (CPI) is generated through weighted calculation. The integration of multiple devices realizes one-stop detection and improves efficiency; the structural design of arc-shaped protrusions, temperature regulation, etc. fits the actual use scenario and enhances the practicality of detection; pressure control, image acquisition and other technologies ensure data accuracy; the intelligent evaluation system provides a quantitative basis for fabric research and development and quality control, and promotes the performance optimization and application expansion of knitted fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is the overall logical framework diagram of the present invention;

[0032] Figure 2 Schematic diagram of the structure of the wear resistance testing device of the present invention;

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

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

[0035] Figure 5 Schematic diagram of the structure of the air permeability detection device of the present invention;

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

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

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

[0039] Figure 9 Schematic diagram of the structure of the tear strength detection device of the present invention;

[0040] Figure 10 A schematic structural diagram of the tear strength testing device of the present invention from another perspective;

[0041] Figure 11 It is a structural schematic diagram of the second fixing seat of the present invention.

[0042] Reference numerals include:

[0043] 1. Air permeability detection device; 2. Wear resistance detection device; 3. Tear strength detection device; 4. Frame; 5. First drive unit; 6. Friction test unit; 7. First image acquisition unit; 8. First movable guide rail; 9. First movable seat; 11. First friction assembly; 12. First workbench; 13. Arc-shaped protrusion; 14. Fixing hole; 15. Fixing block; 16. Adjustment assembly; 17. First friction component; 18. Guide plate; 19. First drive member; 21. Guide groove; 22. Screw; 23. Rotating 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 shell; 33. Lower shell; 34. Snap-on column; 35. Snap-on hole; 36. 6. First guide column; 37. First sleeve; 38. First fixing seat; 39. Limiting notch; 41. Limiting protrusion; 42. First annular portion; 43. Second annular portion; 44. First clamping ring; 45. First annular protrusion; 46. First annular groove; 47. Second annular groove; 48. Frame; 49. Second guide column; 51. Impact mechanism; 52. Second fixing seat; 53. Drive mechanism; 54. Second image acquisition unit; 55. Impact plate; 56. Second sleeve; 57. Impact head; 58. First rotating wheel; 59. First driving 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 DESCRIPTION

[0044] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0045] See also Figures 1 to 11 As shown, a multi-performance integrated intelligent testing device for knitted fabrics of the present invention includes an air permeability detection device 1, a wear resistance detection device 2, a tear strength detection device 3, and a control center; the air permeability detection device 1, the wear resistance detection device 2, and the tear strength detection device 3 are all electrically connected to the control center, and the air permeability detection device 1, the wear resistance detection device 2, and the tear strength detection device 3 jointly output the test data to the control center, which comprehensively evaluates the overall performance of the knitted fabric;

[0046] The wear resistance testing device 2 includes a frame 4, a first driving unit 5 arranged on the frame 4, a friction testing unit 6 and a first image acquisition unit 7, the friction testing unit 6 includes a first movable guide rail 8, a first movable seat 9 reciprocatingly arranged on the first movable guide rail 8, a first friction component 11 arranged on the first movable seat 9 and a first workbench 12 arranged on the frame 4, the first workbench 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 workbench 12; the first driving unit 5 is connected to the first movable seat 9, the first driving unit 5 drives the first movable seat 9 to reciprocate on the first movable guide rail 8, driving the first friction component 11 to perform reciprocating friction on the knitted fabric to be tested placed on the first workbench 12, and the first image acquisition unit 7 is arranged on the first friction component 11 to capture the image of the knitted fabric to be tested after friction and transmit it back to the control center.

[0047] The multi-performance integrated intelligent testing device for knitted fabrics of the present invention electrically connects the air permeability testing device 1, the wear resistance testing device 2, and the tear strength testing device 3 to the control center, thereby achieving the common output of test data to the control center and overall performance evaluation, and has the advantages of multi-performance integrated testing and intelligent evaluation. In specific implementation, the frame 4 of the wear resistance testing device 2 is provided with a first drive unit 5, a friction testing unit 6, and a first image acquisition unit 7, wherein a first movable seat 9 is reciprocally arranged on the first movable guide rail 8 of the friction testing unit 6, and a first friction component 11 on the first movable seat 9 is in close contact with the surface of the knitted fabric to be tested on the first workbench 12. The first drive unit 5 drives the first movable seat 9 to drive the first friction component 11 to reciprocate and rub the knitted fabric. At the same time, the first image acquisition unit 7 captures the image of the knitted fabric after friction and transmits it back to the control center, thereby completing the wear resistance performance detection and data feedback. Through the coordinated operation of various components, the device achieves efficient and accurate detection 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 a plurality of fixing holes 14 are provided on the side of the arc-shaped protrusion 13. The knitted fabric to be tested is fixed on the arc-shaped protrusion 13 via the fixing holes 14 to test the wear resistance in a bent state; the first friction component 11 includes a fixed block 15 provided on the first movable seat 9, an adjusting component 16 provided on the fixed block 15, and a first friction component 17 connected to the adjusting component 16. The adjusting component 16 includes a guide plate 18 provided on the fixed block 15, a guide plate 18 provided on the guide plate 18, and a first friction component 17 connected to the adjusting component 16. 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 rod 22, and the screw rod 22 is screwed downwardly with the internal thread of the guide plate 18, and the bottom of the screw rod 22 is connected to the first friction component 17; when the first driving member 19 drives the screw 22 to rotate, the first friction component 17 is driven to move up and down along the guide plate 18 through the threaded transmission, so as to adjust the contact pressure between the first friction component 17 and the surface of the knitted cloth fixed on the arc-shaped protrusion 13.

[0049] By providing an arc-shaped protrusion 13 and a side fixing hole 14 on the first workbench 12, the knitted fabric to be tested is fixed on the arc-shaped protrusion 13, which can effectively test its wear resistance in a bent state, adapting to 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 is composed of a guide plate 18, a first drive member 19, etc. The first drive member 19 drives the screw 22 to rotate, and uses the threaded 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 requirements. In this way, the actual situation of knitted fabric being bent can be simulated, and the friction pressure can be flexibly controlled, making the wear resistance test more practical, accurate and reliable, and improving the applicability of the testing device and the accuracy of the test results.

[0050] The first driving unit 5 includes a rotating motor 23, a rotating disc 24 connected to the output end of the rotating motor 23, and a first transmission rod 25 connected to the rotating disc 24; the other end of the first transmission rod 25 away from the rotating disc 24 is connected to the first movable seat 9, and the rotating motor 23 drives the rotating disc 24 to rotate, driving the first transmission rod 25 to swing back and forth, thereby driving the first movable seat 9 to reciprocate on the first movable guide rail 8.

[0051] This first drive unit 5 adopts a combined structure of a rotary motor 23, a rotary disc 24, and a first transmission rod 25. The rotary motor 23 drives the rotary disc 24 to rotate, and the first transmission rod 25 is used to convert the circular motion into reciprocating swinging, thereby driving the first movable seat 9 to perform stable reciprocating motion on the first movable guide rail 8, providing a continuous and stable driving force for the first friction component 11, ensuring the regularity and consistency of the friction action when the wear resistance of the knitted fabric is tested, 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 rotary disc 24. One end of the first transmission rod 25 is connected to the rotary disc 24, and the other end is connected to the first movable seat 9. The rotary motor 23 is started to realize the reciprocating motion of the first movable seat 9 on the guide rail, providing power for the wear resistance test of the knitted fabric. The structure is simple and the transmission is efficient, which is easy to implement and maintain.

[0052] The air permeability detection device 1 includes a base 26, a sealing assembly 27 arranged on the base 26, an air inlet assembly 28 arranged above the sealing assembly 27, an air outlet assembly 29 arranged below the sealing assembly 27, and a gas flow sensor 31 arranged on the air outlet assembly 29; the knitted cloth to be tested is placed in the sealing assembly 27, the air inlet assembly 28 transports gas into the sealing assembly 27, and the gas passes through the knitted cloth to be tested and is discharged through the air outlet assembly 29. The gas flow sensor 31 measures the flow of the discharged gas and transmits the data to the control center.

[0053] The breathability testing device 1, through the coordinated operation of its various components, has the advantage of accurately and efficiently testing the breathability of knitted fabrics. During specific implementation, the knitted fabric to be tested is placed within the sealing assembly 27 of the base 26. The air inlet assembly 28 delivers gas into the sealing assembly 27. The gas passes through the knitted fabric and is discharged through the air outlet assembly 29. The gas flow sensor 31 on the air outlet assembly 29 measures the flow of the discharged gas in real time and transmits the data to the control center. This design can accurately quantify the breathability of the knitted fabric. The sealing assembly 27 ensures that the gas is discharged only through the knitted fabric, ensuring the accuracy of the test data. The coordination of the air inlet and outlet assemblies 29 and the gas flow sensor 31 realizes a complete testing process from gas input to data output, making the breathability performance testing process standardized and efficient, and providing reliable breathability data support for the overall performance evaluation of the knitted fabric.

[0054] The sealing assembly 27 includes an upper shell 32 and a lower shell 33. A clamping column 34 is provided at the connection between the upper shell 32 and the lower shell 33. The lower shell 33 is provided with a clamping hole 35 for accommodating the clamping column 34. A first guide column 36 is also provided on the base 26. A first sleeve 37 is provided on the side of the upper shell 32. The upper shell 32 moves up and down on the first guide column 36 via the first sleeve 37 to approach or move away from the lower shell 33; a first fixing seat 38 for fixing the knitted fabric to be tested is also provided in the sealing assembly 27. A limiting notch 39 is provided on the side of the first fixing seat 38, and a limiting protrusion is provided on the inner side wall of the lower shell 33. 41. The first fixing seat 38 is clamped in the lower shell body 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 clamping 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 a side close to the first annular portion 42. The second annular portion 43 is provided with a second annular groove 47 on a 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, and the first clamping ring 44 is placed in the second annular groove 47 to clamp and fix the knitted fabric to be tested.

[0055] The upper shell 32 moves on the first guide post 36 of the base 26 with the help of the first sleeve 37, approaching or separating from the lower shell 33. The cooperation of the clamping post 34 and the clamping hole 35 realizes a stable connection between the two, ensuring the sealing during testing. The first fixing seat 38 is clamped and fixed to the limiting protrusion 41 in the lower shell 33 through 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 clamping ring 44 is placed in the groove. The first annular protrusion 45 of the first annular portion 42 cooperates with the first annular groove 46 of the second annular portion 43 to ensure that the first clamping ring 44 stably presses the knitted fabric to prevent gas from leaking 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. During the air permeability test, gas can only be discharged through the air vents of the knitted fabric, thereby improving the accuracy and reliability of the air permeability performance test data.

[0056] The tear strength testing device 3 includes a frame 48, a second guide column 49 arranged 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 driving mechanism 53 arranged on the side of the frame 48. The fabric to be tested is fixed on the second fixed seat 52. The driving mechanism 53 is connected to the impact mechanism 51. The driving 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, which collects image data of the test fabric that has undergone the impact test and transmits it back to the control center.

[0057] The fabric to be tested is secured to the second mounting base 52 on the frame 48. A drive mechanism 53 is connected to the impact mechanism 51. By driving the impact mechanism 51 back and forth on the second guide post 49, the impact mechanism 51 is moved toward or away from the second mounting base 52, thereby performing an impact test on the fabric. During the test, the second image acquisition unit 54 on the impact mechanism 51 captures real-time image data of the impacted fabric and transmits this data to the control center. This device simulates the impact tearing of fabric in actual use. This image acquisition provides intuitive data for subsequent analysis, making knitted fabric tear strength testing more realistic and reliable, and providing critical data support for comprehensive evaluation of knitted fabric performance.

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

[0059] The second sleeve 56 on the impact plate 55 is mounted on 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 activated to rotate the second rotating wheel 61. When the belt is reeled in, it drives the first rotating wheel 58 and pulls the impact plate 55 upward along the second guide post 49. When the belt is unreeled, the impact plate 55 slides down the second guide post 49 under its own gravity, and the impact head 57 at the bottom impacts the fabric to be tested, which is fixed to the second fixed base 52. During this process, the second image acquisition unit 54 simultaneously captures image data of the fabric after the impact and transmits it back to the control center. This combination of belt drive and gravity-driven drop not only allows for flexible control of the raising and lowering of the impact mechanism 51, ensuring stable impact action, but also allows for adjustable impact force and frequency by adjusting the motor speed, making tear strength testing more tailored to diverse testing needs and improving the comprehensiveness and accuracy of test results.

[0060] The second fixing seat 52 is provided with a temperature regulating unit, which includes a heating wire 62 and a temperature sensor 63. The heating wire 62 is evenly distributed inside the second fixing seat 52 and is used to heat the fabric to be tested fixed on the second fixing seat 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 operating 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.

[0061] The 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. The temperature sensor 63 establishes an electrical connection with 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 high-temperature test conditions are preset, the control center increases the power of the heating wires 62 to quickly heat up; when 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 use scenarios of knitted fabrics in 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 enhance the practicality of the detection device and the application value of the test results.

[0062] The tear strength detection device 3 also includes a first buffer device 64 and a second buffer device 65 arranged on the frame 48; the first buffer device 64 is arranged at the top of the second guide column 49, and the second buffer device 65 is arranged at the end of the second guide column 49; the first buffer device 64 and the second buffer device 65 both include a buffer spring 66 and a buffer pad 67 arranged 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 column 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.

[0063] A first buffer device 64 and a second buffer device 65 are respectively installed at the top and end of the second guide column 49 of the frame 48. Each buffer device is composed of a buffer spring 66 and buffer pads 67 at both ends. When the impact mechanism 51 slides rapidly along the second guide column 49 to the top or end, the buffer pad 67 first contacts the impact mechanism 51 or the frame 48. Then 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 detection device, but also reduces vibration interference during the detection process, ensures the accuracy of the impact test action, and makes the knitted fabric tear strength test results more reliable. It also reduces equipment maintenance costs and enhances the overall performance of the detection 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. The intake pressure sensor 68 and the intelligent regulating valve 69 are both arranged 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 instruction to the intelligent regulating valve 69 to adjust the pressure value.

[0065] The provision of the intake pressure sensor 68 and the intelligent regulating valve 69 in the intake assembly 28 provides precise pressure control for the breathability test of knitted fabrics. In specific implementation, the intake pressure sensor 68 and the intelligent regulating valve 69 are installed on the intake pipe and electrically connected to the control center. During the test process, the intake pressure sensor 68 monitors the pressure of the gas entering the sealing assembly 27 in real time and transmits the data to the control center in a timely manner. Once the real-time pressure exceeds the preset threshold range, the control center quickly sends a control instruction to the intelligent regulating valve 69, which automatically adjusts the intake volume accordingly to return the gas pressure to the appropriate range. In this way, the stability and accuracy of the gas pressure during the breathability test are ensured, the test results are prevented from being affected by pressure fluctuations, the knitted fabric breathability test data is made more reliable, and the intelligence and precision of the test device in breathability test are improved.

[0066] The gas flow rate sensor 31 is used to measure the gas flow rate per unit time through the knitted fabric, and the gas permeability is quantified by combining the test area and pressure difference. The gas flow rate sensor 31 data (Q, unit: L / min) and the test area (A, unit: cm 2 ), inlet pressure (P, unit: Pa) and other parameters. The calculation formula of air permeability (G) is: Wherein, ΔP is the pressure difference (Pa) on both sides of the sealing component 27, which is usually determined by the difference between the intake pressure and the atmospheric pressure; the result unit is L / (cm2·Pa·min). The larger the value of the permeability (G), the better the permeability.

[0067] Wear resistance testing and analysis: The wear resistance of the knitted fabric is evaluated by reciprocating friction and analyzing the degree of wear in combination with image acquisition. The wear image from the first image acquisition unit 7 is received, and the worn area is identified using image processing algorithms (such as edge detection and pixel comparison). The wear rate is calculated by combining parameters such as the number of frictions (N), friction pressure (F, unit: N), and friction travel (S, unit: cm). The wear rate (W) calculation formula is:

[0068] Wear area (cm 2 ), extracted by image analysis algorithm, A0: initial test area (cm 2 ). Comprehensive formula for wear resistance index (K): The larger the K value, the stronger the wear resistance, taking into account the friction conditions and the degree of wear.

[0069] Tear strength detection and analysis: The impact head 57 applies an impact force to the fabric, and the tear area or tear force is analyzed in combination with image acquisition to evaluate the tear strength. The tear image from the second image acquisition unit 54 is received, and the tear length (L, unit: mm) or tear area (A_t, unit: mm) is identified.2 ). Combined with parameters such as impact energy (E, unit: J), temperature (T, unit: ℃), etc., the tear strength is calculated. The calculation formula for tear strength (T_s) is: Fmax: Maximum tearing force during impact (N), converted from drive mechanism parameters and impact speed, L: Tear length (mm).

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

[0071] The rest of this embodiment is the same as that of the first embodiment. The features not explained in this embodiment are all based on the explanations of the first embodiment and will not be described in detail here.

[0072] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A multi-performance integrated intelligent testing device for knitted fabrics, characterized by: The invention comprises an air permeability detection device (1), a wear resistance detection device (2), a tear strength detection device (3) and a control center; the air permeability detection device (1), the wear resistance detection device (2) and the tear strength detection device (3) are all electrically connected to the control center, and the air permeability detection device (1), the wear resistance detection device (2) and the tear strength detection device (3) jointly output the detected data to the control center, and the control center comprehensively evaluates the overall performance of the knitted fabric; The wear resistance testing device (2) comprises a frame (4), a first driving unit (5) arranged on the frame (4), a friction testing unit (6) and a first image acquisition unit (7); the friction testing unit (6) comprises a first movable guide rail (8), a first movable seat (9) reciprocatingly arranged on the first movable guide rail (8), a first friction component (11) arranged on the first movable seat (9) and a first workbench (12) arranged on the frame (4); the first workbench (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 workbench (12); the first driving unit (5) is connected to the first movable seat (9); the first driving unit (5) drives the first movable seat (9) to reciprocate on the first movable guide rail (8) to drive the first friction component (11) to reciprocate and rub the knitted fabric to be tested placed on the first workbench (12); the first image acquisition unit (7) is arranged on the first friction component (11) to collect images of the knitted fabric to be tested after friction and transmits the images back to a control center.

2. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 1, characterized in that: The first workbench (12) is provided with an arc-shaped protrusion (13), and a plurality of fixing holes (14) are provided on the side of the arc-shaped protrusion (13). The knitted fabric to be tested is fixed on the arc-shaped protrusion (13) via the fixing holes (14) to test the wear resistance in a bent state; the first friction component (11) includes a fixed block (15) arranged on the first movable seat (9), an adjusting component (16) arranged on the fixed block (15), and a first friction member (17) connected to the adjusting component (16); the adjusting component (16) includes a guide plate (18) arranged on the fixed block (15), a guide plate (18) arranged on the guide plate (18) The invention relates to a first driving member (19) on the guide plate (18), a guide groove (21) is provided on the guide plate (18), an internal thread is provided in the guide groove (21), an output end of the first driving member (19) is provided with a screw rod (22), the screw rod (22) is screwed downwardly with the internal thread of the guide plate (18), and the bottom of the screw rod (22) is connected to the first friction member (17); when the first driving member (19) drives the screw rod (22) to rotate, the first friction member (17) is driven to move up and down along the guide plate (18) through the screw transmission, so as to adjust the contact pressure between the first friction member (17) and the surface of the knitted fabric fixed on the arc-shaped protrusion (13).

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

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

5. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 4, characterized in that: The sealing assembly (27) comprises an upper shell (32) and a lower shell (33); a clamping column (34) is provided at the connection between the upper shell (32) and the lower shell (33); the lower shell (33) is provided with a clamping hole (35) for accommodating the clamping column (34); a first guide column (36) is further provided on the base (26); a first sleeve (37) is provided on the side of the upper shell (32); the upper shell (32) moves up and down on the first guide column (36) via the first sleeve (37) to approach or move away from the lower shell (33); a first fixing seat (38) for fixing the knitted fabric to be detected is further provided in the sealing assembly (27); a limiting notch (39) is provided on the side of the first fixing seat (38); a limiting convex portion is provided on the inner side wall of the lower shell (33); The first fixing seat (38) is connected to the lower shell (33) via the limiting notch (39), and 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), and the second annular portion (43) is provided with a first annular groove (46) for accommodating the first annular protrusion (45) on a side close to the first annular portion (42), and the second annular portion (43) is provided with a second annular groove (47) on a 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), and the first pressing ring (44) is placed in the second annular groove (47) to press and fix the knitted fabric to be tested.

6. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 1, characterized in that: The tear strength testing device (3) comprises a frame (48), a second guide post (49) arranged 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 driving mechanism (53) arranged on the side of the frame (48); the fabric to be tested is fixed on the second fixed seat (52); the driving mechanism (53) is connected to the impact mechanism (51); the driving mechanism (53) drives the impact mechanism (51) to reciprocate on the second guide post (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); and the impact mechanism (51) is further provided with a second image acquisition unit (54); the second image acquisition unit (54) acquires image data of the fabric to be tested that has undergone the impact test and transmits the image data back to a control center.

7. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 6, characterized in that: The impact mechanism (51) includes an impact plate (55), a second sleeve (56) arranged on the impact plate (55), an impact head (57) arranged at the bottom of the impact plate (55), and a first rotating wheel (58) arranged on the impact plate (55); the driving mechanism (53) includes a first driving motor (59), a second rotating wheel (61) connected to the output end of the first driving motor (59); a belt is sleeved on the first rotating wheel (58) and the second rotating wheel (61); the first driving motor (59) drives the second rotating wheel (61) to rotate to realize the belt retraction When the belt is wound and unwound, the second sleeve (56) is sleeved on the second guide column (49), and the impact plate (55) slides up and down along the axial direction of the second guide column (49) through the sleeve engagement of the second sleeve (56) and the second guide column (49); when the belt is wound, the first rotating wheel (58) is driven to rotate, thereby pulling the impact plate (55) to slide upward along the second guide column (49); when the belt is unwound, the impact plate (55) slides downward along the second guide column (49) under the action of its own gravity, thereby realizing the impact action of the impact head (57) on the fabric to be detected.

8. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 6, characterized in that: The second fixing seat (52) is provided with a temperature regulating unit, which comprises a heating wire (62) and a temperature sensor (63). The heating wire (62) is evenly distributed inside the second fixing seat (52) and is used to heat the fabric to be tested fixed on the second fixing seat (52); the temperature sensor (63) is electrically connected to a control center, monitors the temperature of the fabric to be tested in real time, and transmits data to the control center; the control center automatically adjusts the working power of the heating wire (62) according to a preset test temperature requirement to control the temperature of the fabric to be tested, thereby realizing the test of the tear strength of the knitted fabric under different temperature conditions.

9. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 6, characterized in that: The tear strength detection device (3) further includes a first buffer device (64) and a second buffer device (65) arranged on the frame (48); the first buffer device (64) is arranged at the top end of the second guide column (49), and the second buffer device (65) is arranged at the end end of the second guide column (49); the first buffer device (64) and the second buffer device (65) both include a buffer spring (66) and a buffer pad (67) arranged at both ends of the buffer spring (66); when the impact mechanism (51) slides upward to the top end or downward to the end end along the second guide column (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).

10. The multi-performance integrated intelligent testing device for knitted fabrics according to claim 4, characterized in that: The air intake assembly (28) further comprises an air intake pressure sensor (68) and an intelligent regulating valve (69) electrically connected to the control center. The air intake pressure sensor (68) and the intelligent regulating valve (69) are both arranged on the air intake pipe. The air intake pressure sensor (68) is used to monitor the pressure of the gas entering the sealing assembly (27) in real time and transmit the pressure data to the control center. When the real-time pressure exceeds a preset threshold range, the control center sends a control instruction to the intelligent regulating valve (69) to adjust the pressure value.

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