A yarn strength detection device for spinning

Abstract

This application relates to a yarn strength testing device for spinning, belonging to the technical field of yarn testing equipment. It includes a testing box, a testing assembly for testing multiple yarn types, and a tensile assembly, a bending assembly, a torsion assembly, and a polishing assembly for testing the tensile, bending, torsional, and abrasion strength of the yarn. The testing assembly includes a movable frame and a video sensor movably mounted on the testing box, a clamping member for holding multiple yarns, a moving member for translating the movable frame, and an adjusting member for regulating the temperature inside the testing box. The tensile assembly includes a rotatably mounted inclined cam on the movable frame and multiple double-sided inclined blocks movably mounted inside the testing box. This application can automatically adjust the tensile strength, bending force, torsional force, and polishing wheel according to the type of yarn, and can automatically adjust the optimal tensile strength, bending force, torsional force, and abrasion resistance for testing based on the yarn type.

Description

Technical Field

[0001] This application relates to the technical field of yarn testing equipment, and in particular to a yarn strength testing device for spinning. Background Technology

[0002] Yarn is a type of textile product made from various textile fibers processed into a certain fineness. During the production and processing of yarn, it is usually necessary to test the tensile strength, bending strength, torsional strength, and abrasion resistance of the yarn to ensure the quality of yarn production. The most common types of yarn are nylon yarn, cotton yarn, and aramid yarn. When testing the tensile, bending, torsional, and abrasion resistance of yarn, it is usually necessary to stretch, bend, twist, and polish the yarn to ensure the accuracy of the strength test for different types of yarn.

[0003] Due to their different materials, nylon yarn, cotton yarn, and aramid yarn have different tensile strength, bending strength, torsional strength, and abrasion resistance. Therefore, it is necessary to use different limits of tensile strength, bending strength, torsional strength, and abrasion wheels to test the strength of nylon yarn, cotton yarn, and aramid yarn. Under the same model, aramid yarn has the highest tensile strength and torsional strength among the three yarns, nylon yarn has the highest bending strength among the three yarns, while cotton yarn has moderate tensile strength, bending strength, and torsional strength among the three yarns. Rubber abrasion wheels are used for nylon yarn, wool abrasion wheels are used for cotton yarn, and ceramic abrasion wheels are used for aramid yarn.

[0004] Regarding the aforementioned technologies, the inventors believe that the following drawbacks exist: When testing the strength of yarn, different tensile, bending, torsional, and abrasion wheels are required depending on the type of yarn. However, existing yarn strength testing devices are not convenient for automatically adjusting the tensile, bending, torsional, and abrasion wheels according to different yarn types. This necessitates operators adjusting different tensile, bending, torsional, and abrasion wheels based on the yarn type, which not only increases the labor intensity of operators but also reduces work efficiency. Furthermore, frequent adjustments by operators increase the complexity of operation and the possibility of errors. If operators adjust the yarn's tensile, bending, torsional, and abrasion wheels incorrectly, the mismatch between the yarn and the force used for strength testing will lead to inaccurate yarn strength testing results, affecting the effectiveness of strength testing for different yarns. Summary of the Invention

[0005] To address the problem that existing yarn strength testing devices for spinning are inconvenient for automatically adjusting tensile force, bending force, torsional force, and abrasion wheels according to different yarn types, requiring operators to precisely adjust different tensile forces, bending forces, torsional forces, and abrasion wheels for different yarns during strength testing, which not only increases the labor intensity of operators but also reduces work efficiency, this application provides a yarn strength testing device for spinning.

[0006] The yarn strength testing device for spinning provided in this application adopts the following technical solution:

[0007] A yarn strength testing device for spinning includes a testing box, a testing component for testing multiple yarn types, and a stretching component, a bending component, a torsion component, and a polishing component for testing the tensile, bending, torsion, and abrasion strength of the yarn.

[0008] The detection assembly includes a movable frame and a video sensor movably mounted on the detection box, a clamping component for clamping multiple yarns, a moving component for translating the movable frame, and an adjusting component for adjusting the temperature inside the detection box.

[0009] The stretching assembly includes a rotatably mounted inclined cam on a movable frame, multiple double-sided inclined blocks movably mounted inside a detection box, and a translation component for driving the double-sided inclined blocks to translate.

[0010] The bending assembly includes two movable wheels movably mounted on a movable frame and a lifting component for lifting and lowering the two movable wheels and the video sensor;

[0011] The torsion assembly includes a speed regulating wheel and multiple rotating wheels rotatably disposed inside the detection box, as well as a rotating component for driving the multiple rotating wheels to rotate.

[0012] The polishing assembly includes three polishing wheels rotatably mounted on a movable frame and a synchronizing element for synchronizing the rotation of the three polishing wheels. The three polishing wheels are a rubber polishing wheel, a wool polishing wheel, and a ceramic polishing wheel.

[0013] The testing box is also equipped with a power component for raising and lowering the inclined cam, switching the three grinding wheels, and adjusting the rotation speed of the rotating wheel. The raising and lowering component is automatically driven by the power component.

[0014] By adopting the above technical solutions, different yarns are usually tested on different testing platforms when they are subjected to different strength tests. However, the sensor accuracy, loading speed control, and clamp design of different testing platforms are different. The yarn is repeatedly installed and clamped on different devices, and there will be slight differences in the pretension and position consistency of each clamping, which introduces human error and reduces the comparability of data. Moreover, the yarn is easily damaged when transferred between different devices. Each step takes time and requires staff to operate back and forth between different devices, which also affects the testing efficiency of the yarn and cannot guarantee the accuracy of the yarn strength test.

[0015] The detection components can clamp all yarns within the detection chamber and simultaneously detect all yarn types, including nylon, cotton, and aramid. The tension component detects the yarn's tensile strength, bending component detects its bending strength, torsion component detects its torsional strength, and abrasion component detects its abrasion resistance. The power unit adjusts the tension, bending, torsion, and abrasion components according to the yarn type, regulating the yarn's tensile, bending, and torsional forces, as well as the abrasion wheel. This allows for simultaneous detection of the yarn's tensile, bending, torsional, and abrasion resistance, ensuring efficient and effective yarn detection.

[0016] Optionally, the clamping component includes multiple fixed clamps and multiple movable clamps movably disposed within the testing box, and threaded clamping blocks rotatably disposed on the multiple fixed clamps and multiple movable clamps respectively. The fixed clamps are threadedly connected to the threaded clamping blocks, and the movable clamps are threadedly connected to the threaded clamping blocks. The fixed clamps, movable clamps, and threaded clamping blocks are all in movable contact with the yarn.

[0017] By adopting the above technical solution, the clamping component can clamp and fix multiple yarns in the test box, avoiding the phenomenon of multiple yarns falling off when performing tensile, bending, torsion and abrasion strength tests. Multiple yarns that need to be tested are placed between multiple movable clamps and multiple fixed clamps, and by rotating multiple threaded clamps in conjunction with multiple movable clamps and multiple fixed clamps, multiple yarns can be fixed between multiple movable clamps and multiple fixed clamps.

[0018] Optionally, the translation component includes multiple telescopic springs fixed inside the detection box, a motor fixed to the movable frame, a movable rod rotatably mounted on the movable frame, a fixed square groove mounted inside the movable rod, a compression spring fixed inside the fixed square groove, a wedge-shaped conical wheel fixed to the inclined cam, and a fixed block fixed to the wedge-shaped conical wheel. The multiple telescopic springs are respectively fixedly connected to multiple fixed clamps, the multiple double-sided inclined blocks are respectively fixedly connected to multiple fixed clamps, the movable rod is fixedly connected to the output end of the motor, the compression spring is fixedly connected to the fixed block, the fixed block is slidably connected to the fixed square groove, and the multiple double-sided inclined blocks are all movably in contact with the inclined cam.

[0019] By adopting the above technical solution, the translation component can perform tensile strength testing on yarn. The motor can sequentially drive the movable rod, compression spring, fixed block, wedge-shaped conical wheel, and inclined cam to rotate. Through the inclined taper of the inclined cam, the rotation of the inclined cam can sequentially drive the double-sided inclined block and fixed clamp to move. At the same time, with the elastic force of the telescopic spring, the double-sided inclined block and fixed clamp can move left and right. With the movable clamp, the yarn can be stretched back and forth, thereby enabling the testing of the yarn's tensile strength.

[0020] Optionally, the rotating component includes a servo motor fixed to the movable frame, multiple movable clamps are respectively fixedly connected to multiple rotating wheels, the speed regulating wheel is fixedly connected to the output shaft of the servo motor, and the multiple rotating wheels are all movably abutting against the speed regulating wheel.

[0021] By adopting the above technical solution, the rotating component can perform torsional strength testing on the yarn. The servo motor can sequentially drive the speed regulating wheel, rotating wheel and movable clamp to rotate, and then, in conjunction with the fixed clamp, can perform torsion treatment on the yarn, thereby enabling the torsional strength testing of the yarn.

[0022] Optionally, the lifting component includes a connecting square groove disposed on the movable frame, a connecting spring fixed in the connecting square groove, and a connecting frame fixed on the connecting spring. Both movable wheels are fixedly connected to the connecting frame, and both movable wheels are movably in contact with the yarn. The connecting frame is slidably connected to the connecting square groove.

[0023] By adopting the above technical solution, when the power component drives the lifting component, it can be used with the grinding wheel to test the bending strength of the yarn. The power component, in conjunction with the elastic force of the connecting spring, can sequentially drive the connecting frame and the two movable wheels to move up and down. When the two movable wheels move downward, they can be used with the grinding wheel to bend and press down the yarn, thereby detecting the bending force of the yarn.

[0024] Optionally, the synchronizing element includes a rotating disk rotatably mounted on a movable frame, three synchronizing gears and a toothed belt rotatably mounted on the rotating disk, and a rotary motor fixed on the rotating disk. The three synchronizing gears are respectively coaxially fixed with the three grinding wheels, and all three synchronizing gears mesh with the toothed belt for transmission. All three grinding wheels are rotatably connected to the yarn, and one synchronizing gear is fixedly connected to the output end of the rotary motor.

[0025] By adopting the above technical solution, the synchronizing component can perform abrasion resistance testing on the yarn. A rotary motor can drive one synchronizing gear to rotate, which, together with the toothed belt, can drive two other synchronizing gears to rotate. The three synchronizing gears can drive three grinding wheels to rotate respectively. When the grinding wheels rotate, they work in conjunction with the two movable wheels to press down on the yarn, and the grinding wheels will perform abrasion treatment on the yarn, which can perform abrasion resistance testing on the yarn. At the same time, the rotation of the grinding wheels, together with the back and forth movement of the fixed clamp, can perform sliding wear testing and rolling wear testing on the yarn.

[0026] Optionally, the power component includes an adjusting frame movably mounted on the movable frame, a movable rack fixed on the adjusting frame, a movable gear fixed on the rotating disk, an electric telescopic rod fixed on the movable frame, and a wedge block fixed on the connecting frame. The adjusting frame is fixedly connected to the output end of the electric telescopic rod, the adjusting frame is movably engaged with the inclined surface of the wedge block, the adjusting frame is movably engaged with the inclined surface of the wedge conical wheel, and the movable gear meshes with the movable rack.

[0027] By adopting the above technical solution, the power component, in conjunction with the video sensor, can automatically adjust the tensile force of the tension component, the bending force of the bending component, the torsional force of the torsion component, and the three grinding wheels of the grinding component according to the different types of yarn. The electric telescopic rod sequentially drives the adjusting frame, servo motor, speed regulating wheel, and movable rack to move left and right. When the adjusting frame moves left and right, it compresses the inclined surface of the wedge block. Combined with the elasticity of the connecting spring, this sequentially drives the connecting frame and two movable wheels to move up and down. When the two movable wheels move downwards, they work with the grinding wheels to bend and press down on the yarn. The bending force of the yarn can be adjusted according to the different positions of the adjusting frame against the inclined surface of the wedge block. When the adjusting frame moves left and right, it compresses the inclined surface of the wedge-shaped conical wheel. The pressure, combined with the elastic force of the compression spring, can sequentially drive the wedge-shaped conical wheel, the inclined cam, and the fixed block to move up and down. The position of the double-sided inclined block and the inclined cam can be adjusted to adjust the tension of the yarn. When the speed regulating wheel moves left and right, the position of the rotating wheel on the speed regulating wheel can be adjusted, thereby adjusting the speed of the speed regulating wheel and adjusting the torque of the yarn. When the movable rack moves left and right, it can sequentially drive the movable gear, the rotating disk, the rotary motor, the three rotating wheels, the toothed belt, and the three grinding wheels to rotate. The position of the three grinding wheels can be adjusted to detect the abrasion resistance of different yarns. According to the type of yarn, it can automatically adjust the optimal tensile strength, bending force, torsional force, and abrasion resistance to test the tensile, bending, torsional, and abrasion resistance of the corresponding yarn.

[0028] Optionally, the movable component includes a threaded rod rotatably disposed inside the detection box, a drive motor fixed to the detection box, an infrared generator fixed to the movable frame, and multiple infrared receivers fixed inside the detection box. The multiple infrared receivers are electrically connected to the infrared generator. The threaded rod is threadedly connected to the movable frame and fixedly connected to the output end of the drive motor. The multiple infrared receivers are respectively located below multiple fixed clamps, and the infrared generator is electrically connected to the drive motor.

[0029] By adopting the above technical solution, the moving component can sequentially perform tensile, bending, torsion, and abrasion strength tests on all yarns in the testing chamber. The drive motor can rotate the threaded rod, which in turn sequentially moves the movable frame, infrared generator, electric telescopic rod, adjusting frame, servo motor, speed regulating wheel, electric motor, movable rod, compression spring, fixed block, wedge-shaped conical wheel, inclined cam, connecting spring, connecting frame, two movable wheels, wedge block, video sensor, rotating disk, rotary motor, three synchronous gears, toothed belt, three grinding wheels, movable gear, and movable rack to move back and forth. This allows for the testing of the inclined cam, three grinding wheels, and other components. The positions of the grinding wheel, two movable wheels, and speed regulating wheel are adjusted. An infrared generator emits infrared rays and multiple infrared receivers receive signals. The infrared generator can transmit the signals to the drive motor, which can precisely control the start and stop of the drive motor. It can also precisely control the stopping position of the inclined cam, three grinding wheels, two movable wheels, and speed regulating wheel each time, so that the inclined cam can sequentially contact multiple double-sided inclined blocks, the speed regulating wheel can sequentially contact multiple rotating wheels, and the three grinding wheels and two movable wheels can sequentially contact multiple yarns. This allows for the sequential testing of the tensile, bending, torsion, and abrasion strength of multiple yarns in the testing chamber.

[0030] Optionally, the adjusting component includes a temperature detector fixed to the testing box, a fixed pipe and an air inlet pipe, a hot and cold air fan connected to the air inlet pipe, multiple air outlets provided on the fixed pipe, and a sealing door movably provided on the testing box. The air inlet pipe is connected to the fixed pipe, and the hot and cold air fan is electrically connected to the temperature detector.

[0031] By adopting the above technical solution, the regulating component can control the temperature inside the testing chamber, and the temperature detector can detect the temperature inside the testing chamber. When the temperature inside the testing chamber is below 20 degrees Celsius, the hot and cold air blower can blow hot air evenly into the testing chamber through the air inlet pipe, the fixed pipe, and multiple air outlets in sequence, which can heat the temperature inside the testing chamber. Conversely, when the temperature inside the testing chamber is above 20 degrees Celsius, the hot and cold air blower can blow cold air into the testing chamber through the fixed pipe and multiple air outlets in sequence, which can cool the temperature inside the testing chamber. The temperature inside the testing chamber can be controlled between 18 and 22 degrees Celsius, avoiding the influence of temperature on the test results of different strengths of the yarn during strength testing.

[0032] Optionally, the video sensor is fixedly connected to the connecting frame, and the video sensor is located above the yarn.

[0033] By adopting the above technical solution, when the moving component drives the video sensor to move horizontally, it can detect all types of yarn in the detection box, including whether the yarn is nylon, cotton, or aramid. At the same time, when the lifting component drives the video sensor to move up and down, it can adjust the distance between the video sensor and the yarn to ensure the effectiveness of the video sensor in detecting the yarn.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. The clamping components can fix multiple yarns between multiple movable clamps and multiple fixed clamps respectively, preventing multiple yarns from falling off during tensile, bending, torsion and abrasion strength tests, thus ensuring the stability of yarn strength testing. The adjusting components can control the temperature inside the testing chamber between 18 and 22 degrees Celsius, preventing the yarn from being affected by temperature during strength testing, thus avoiding the influence of temperature on the test results of different yarn strengths.

[0036] 2. The translation component, in conjunction with the clamping component, can stretch the yarn back and forth, allowing for the testing of the yarn's tensile strength. The rotating component, in conjunction with the clamping component, can twist the yarn, allowing for the testing of the yarn's torsional strength. The lifting component, in conjunction with the synchronizing component, the power component, and the clamping component, can bend and press the yarn downwards, allowing for the testing of the yarn's bending strength. Simultaneously, the grinding wheels can test the yarn's abrasion resistance, and the yarn can be tested for sliding wear and rolling wear, ensuring the effectiveness of the yarn abrasion resistance testing. The video sensor, in conjunction with the power component, can adjust the yarn's tensile force, torque force, and bending force, as well as the position of the three grinding wheels, according to the yarn type.

[0037] 3. The moving component, in conjunction with a video sensor, a tensioning assembly, a bending assembly, a torsion assembly, and a grinding assembly, can sequentially perform tensile, bending, torsion, and abrasion strength tests on multiple yarns within the testing chamber. This ensures efficient testing of multiple yarns. When the detected yarn is nylon, the power component adjusts the tensioning assembly to its maximum tension for tensile strength testing, the bending assembly to its minimum bending force for bending strength testing, the torsion assembly to its maximum torque for torsion strength testing, and the rubber grinding wheel in the grinding assembly abrades the nylon yarn for abrasion strength testing. When the detected yarn is cotton, the power component adjusts the tensioning assembly to a moderate tension for tensile strength testing, the bending assembly to a moderate bending force for bending strength testing, the torsion assembly to a moderate torque for torsion strength testing, and the wool grinding wheel in the grinding assembly abrades the cotton yarn for abrasion strength testing. The rollers abrade the cotton yarn and test its abrasion resistance. When the detected yarn is aramid yarn, the power unit adjusts the tension of the tension component to the minimum to test the tensile strength of the aramid yarn, adjusts the bending force of the bending component to the maximum to test the bending strength of the aramid yarn, adjusts the torque of the torsion component to the minimum to test the torsional strength of the aramid yarn, and the ceramic grinding wheel in the abrasion component abrades the aramid yarn to test its abrasion resistance. Therefore, the tensile force, bending force, torsional force, and abrasion wheel can be automatically adjusted according to the type of yarn. The optimal tensile force, bending force, torsional force, and abrasion resistance can be automatically adjusted according to the type of yarn to test the tensile, bending, torsional, and abrasion resistance of the corresponding yarn. At the same time, the tensile, bending, torsional, and abrasion resistance of the yarn can be adjusted simultaneously, which can improve the efficiency of yarn strength testing and eliminate the need to test each yarn strength individually, thus ensuring the effectiveness of yarn testing. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0039] Figure 2 Cross-sectional view of the detection box connection structure in this embodiment;

[0040] Figure 3 The external view of the adjustment frame connection structure in the embodiment of this application;

[0041] Figure 4 Cross-sectional view of the movable frame connection structure in the embodiment of this application;

[0042] Figure 5 Cross-sectional view of the movable rod connection structure in the embodiment of this application;

[0043] Figure 6 The appearance diagram of the movable wheel connection structure in the embodiment of this application;

[0044] Figure 7 The appearance diagram of the rotating disk connection structure in the embodiment of this application.

[0045] Reference numerals: 1. Detection box; 2. Yarn; 3. Drive motor; 4. Threaded rod; 5. Movable frame; 6. Electric telescopic rod; 7. Adjusting frame; 8. Servo motor; 9. Speed ​​regulating wheel; 10. Rotating wheel; 11. Movable clamp; 12. Fixed clamp; 13. Threaded clamp block; 14. Electric motor; 15. Movable rod; 16. Compression spring; 17. Fixed block; 18. Wedge-shaped conical wheel; 19. Inclined cam; 20. Double-sided inclined block; 21. Telescopic spring 21. Spring; 22. Infrared generator; 23. Connecting spring; 24. Connecting frame; 25. Movable wheel; 26. Wedge block; 27. Movable rack; 28. Rotary disk; 29. ​​Grinding wheel; 30. Synchronous gear; 31. Toothed belt; 32. Rotary motor; 33. Movable gear; 34. Sealing door; 35. Fixed pipe; 36. Intelligent controller; 37. Temperature detector; 38. Video sensor; 39. Infrared receiver; 40. Air inlet duct. Detailed Implementation

[0046] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0047] This application discloses a yarn strength testing device for spinning, referring to... Figure 1 and Figure 2 The system includes a testing chamber 1, a testing assembly for testing multiple yarn types 2, and a tensile assembly, a bending assembly, a torsion assembly, and a polishing assembly for testing the tensile, bending, torsion, and abrasion strength of the yarns 2. The testing assembly includes a movable frame 5 movably mounted on the testing chamber 1 and a video sensor 38, a clamping member for clamping multiple yarns 2, a moving member for translating the movable frame 5, and an adjusting member for adjusting the temperature inside the testing chamber 1. The tensile assembly includes a slanted cam 19 rotatably mounted on the movable frame 5, multiple double-sided inclined blocks 20 movably mounted inside the testing chamber 1, and a translating member for translating the double-sided inclined blocks 20. The bending assembly includes a slanted cam 19 movably mounted on the movable frame 5. The test box 1 includes two movable wheels 25 on the test box 1 and a lifting component for lifting and lowering the two movable wheels 25 and the video sensor 38; the torsion assembly includes a speed regulating wheel 9 and multiple rotating wheels 10 rotatably disposed in the test box 1 and a rotating component for rotating and driving the multiple rotating wheels 10; the grinding assembly includes three grinding wheels 29 rotatably disposed on the movable frame 5 and a synchronizing component for synchronously rotating the three grinding wheels 29, the three grinding wheels 29 being a rubber grinding wheel, a wool grinding wheel and a ceramic grinding wheel respectively; the test box 1 is also provided with a power component for lifting and lowering the inclined cam 19, for switching the three grinding wheels 29 and for adjusting the speed of the rotating wheels 10, and the lifting component is automatically driven by the power component.

[0048] The clamping components include multiple fixed clamps 12 and multiple movable clamps 11 movably disposed within the testing box 1, and threaded clamping blocks 13 rotatably disposed on the multiple fixed clamps 12 and multiple movable clamps 11 respectively. The fixed clamps 12 are threadedly connected to the threaded clamping blocks 13, and the movable clamps 11 are threadedly connected to the threaded clamping blocks 13. The fixed clamps 12, movable clamps 11 and threaded clamping blocks 13 are all movably fitted with the yarn 2. Each of the multiple threaded clamping blocks 13 consists of a spiral rod, a bearing and a clamping block. The bearing is fixedly connected to the spiral rod, and the clamping block is fixedly connected to the bearing. Through the bearing, when the operator rotates the movable handle, the clamping block can be moved horizontally, so that the multiple clamping blocks can respectively cooperate with the multiple fixed clamps 12 and multiple movable clamps 11 to clamp and fix the multiple yarns 2. The movable clamps 11 and the fixed clamps 12 are each provided with threaded holes adapted to the threads of the spiral rod, and the threaded holes are threadedly connected to the spiral rod.

[0049] The translation component includes multiple telescopic springs 21 fixed inside the detection box 1, a motor 14 fixed on the movable frame 5, a movable rod 15 rotatably mounted on the movable frame 5, a fixed square groove disposed within the movable rod 15, a compression spring 16 fixed within the fixed square groove, a wedge-shaped conical wheel 18 fixed on the inclined cam 19, and a fixed block 17 fixed on the wedge-shaped conical wheel 18. The multiple telescopic springs 21 are respectively fixedly connected to multiple fixed clamps 12, and the multiple double-sided inclined blocks 20 are respectively fixedly connected to multiple fixed clamps 12. The movable rod 15 is fixedly connected to the output end of the motor 14, the compression spring 16 is fixedly connected to the fixed block 17, and the fixed block 17 is slidably connected to the fixed groove. The movable rod 15 can rotate through the compression spring 16, the fixed block 17 and the fixed groove, which in turn drives the inclined cam 19 and the wedge-shaped conical wheel 18 to rotate. Multiple double-sided inclined blocks 20 are in contact with the inclined cam 19. The front and rear sides of the double-sided inclined blocks 20 are both inclined, which can prevent the inclined cam 19 from being obstructed by the double-sided inclined blocks 20 when it moves back and forth.

[0050] The rotating component includes a servo motor 8 fixed on the movable frame 5, multiple movable clamps 11 fixedly connected to multiple rotating wheels 10 respectively, a speed regulating wheel 9 fixedly connected to the output shaft of the servo motor 8, and multiple rotating wheels 10 movably abutting against the speed regulating wheel 9.

[0051] The lifting component includes a connecting square groove set on the movable frame 5, a connecting spring 23 fixed in the connecting square groove, and a connecting frame 24 fixed on the connecting spring 23. Both movable wheels 25 are fixedly connected to the connecting frame 24, and both movable wheels 25 are movably in contact with the yarn 2. The connecting frame 24 is slidably connected to the connecting square groove. The connecting square groove can limit the movement of the connecting frame 24, which can ensure the stability of the lifting of the two movable wheels 25 and the connecting frame 24.

[0052] The synchronizing components include a rotating disk 28 rotatably mounted on the movable frame 5, three synchronizing gears 30 and a toothed belt 31 rotatably mounted on the rotating disk 28, and a rotary motor 32 fixed on the rotating disk 28. The three synchronizing gears 30 are coaxially fixed with the three grinding wheels 29 respectively. All three synchronizing gears 30 mesh with the toothed belt 31 for transmission. All three grinding wheels 29 are rotatably connected to the yarn 2. One synchronizing gear 30 is fixedly connected to the output end of the rotary motor 32.

[0053] The power components include an adjusting frame 7 movably mounted on the movable frame 5, a movable rack 27 fixed on the adjusting frame 7, a movable gear 33 fixed on the rotating disk 28, an electric telescopic rod 6 fixed on the movable frame 5, and a wedge block 26 fixed on the connecting frame 24. The adjusting frame 7 is fixedly connected to the output end of the electric telescopic rod 6. The adjusting frame 7 is movably engaged with the inclined surface of the wedge block 26. The adjusting frame 7 is movably engaged with the inclined surface of the wedge conical wheel 18. The movable gear 33 meshes with the movable rack 27. A sliding strip is fixedly connected to the movable frame 5. The adjusting frame 7 is slidably connected to the sliding strip. The sliding strip ensures the stability of the translation of the adjusting frame 7. Two elongated holes are opened on the detection box 1. Both elongated holes are slidably connected to the adjusting frame 7.

[0054] The moving parts include a threaded rod 4 rotatably mounted inside the detection box 1, a drive motor 3 fixed to the detection box 1, an infrared generator 22 fixed to the movable frame 5, and multiple infrared receivers 39 fixed inside the detection box 1. The multiple infrared receivers 39 are all electrically connected to the infrared generator 22. The threaded rod 4 is threadedly connected to the movable frame 5 and fixedly connected to the output end of the drive motor 3. The multiple infrared receivers 39 are located below multiple fixing clamps 12. The infrared generator 22 is electrically connected to the drive motor 3. Two dovetail strips are fixedly connected to the detection box 1. The two dovetail strips are slidably connected to the movable frame 5. The two dovetail grooves can restrict the circumferential rotation of the movable frame 5 and ensure the stability of the translation of the movable frame 5. Two fixed square holes are opened on the detection box 1. The two fixed square holes are slidably connected to the movable frame 5.

[0055] The adjusting components include a temperature detector 37 fixed on the test box 1, a fixed pipe 35 and an air inlet pipe 40, a hot and cold air fan (not shown in the figure) connected to the air inlet pipe 40, multiple air outlets set on the fixed pipe 35, and a sealing door 34 movably set on the test box 1. The air inlet pipe 40 is connected to the fixed pipe 35 and the air outlet of the hot and cold air fan is connected to the temperature detector 37. The fixed pipe 35 is located inside the test box 1.

[0056] The video sensor 38 is fixedly connected to the connecting frame 24. The video sensor 38 is located above the yarn 2. The intelligent controller 36 is fixedly connected to the detection box 1. The video sensor 38, motor 14, infrared generator 22, multiple infrared receivers 39, drive motor 3, electric telescopic rod 6, temperature detector 37, hot and cold air fan, servo motor 8 and rotary motor 32 are all electrically connected to the intelligent controller 36. The intelligent controller 36 can control the video sensor 38, motor 14, infrared generator 22, multiple infrared receivers 39, drive motor 3, electric telescopic rod 6, temperature detector 37, hot and cold air fan, servo motor 8 and rotary motor 32 to start and stop at set times.

[0057] When conducting strength tests on nylon yarn, cotton yarn, and aramid yarn, the temperature needs to be maintained between 18°C ​​and 22°C. 20°C is a very comfortable room temperature for the human body, which is convenient for researchers to work for extended periods. When nylon yarn, cotton yarn, and aramid yarn are tested at a uniform and stable temperature, they can be compared scientifically. Testing at 18°C-22°C is to eliminate a huge external variable, so that the test results truly reflect the intrinsic quality of yarn 2, rather than fluctuations in the external environment.

[0058] Under the same specifications, when testing the tensile, bending, torsional, and abrasion strength of nylon yarn, cotton yarn, and aramid yarn, aramid yarn exhibits superior tensile strength because its molecular chains have a highly oriented linear structure with extremely high crystallinity (over 90%). This prevents the molecular chains from curling like those of nylon, forming a rigid skeleton. In torsion tests, the rigid molecular chains of aramid yarn are less prone to slippage under stress, and the strong inter-fiber bonding effectively transmits torque, resulting in the greatest torsional stiffness and the ability to withstand greater torsional forces. The fiber arrangement of aramid yarn... Straightening reduces energy loss during twisting, further improving torsional resistance. Aramid yarn exhibits significantly higher torsional strength characteristics than nylon and cotton yarns, thus demonstrating the best torsional resistance. Nylon yarn has flexible, serrated molecular chains that form a partially crystalline structure through hydrogen bonds, with a crystallinity of approximately 40%-60%. This structure allows nylon yarn to absorb energy during bending through chain segment sliding and hydrogen bond breaking, preventing localized stress concentration and breakage. While the fiber surface of nylon yarn is smooth, twisting increases inter-fiber friction, forming a stable yarn structure. In bending tests… This structure effectively disperses stress and prevents fiber slippage, thereby improving bending strength. Nylon yarn exhibits excellent flexural elastic limit strain and low-temperature bending performance, maintaining structural stability during repeated bending, thus possessing the best bending properties. Cotton yarn, on the other hand, has long cellulose molecular chains that are flexible but loosely arranged with low crystallinity (approximately 60%-70%). This structure results in cotton yarn having lower tensile strength and torsional stiffness than nylon and aramid yarns, but higher than completely disordered natural fibers. In bending tests, the interfiber bonding force of cotton yarn is weaker, leading to lower bending strength compared to nylon. Aramid yarn has a rough surface and high inter-fiber friction, but its low crystallinity results in weak inter-fiber bonding and susceptibility to humidity. Therefore, its bending strength is moderate, which improves its torsional performance to some extent. However, its low crystallinity also results in weaker inter-fiber bonding than nylon yarn, so its torsional stiffness is still lower than that of aramid yarn. Thus, nylon yarn has the best bending resistance, cotton yarn has moderate bending resistance, and aramid yarn has the worst bending resistance. Aramid yarn has the best torsional resistance, cotton yarn has moderate torsional resistance, and nylon yarn has the worst torsional resistance. Aramid yarn has the best tensile strength, cotton yarn has moderate tensile strength, and nylon yarn has the worst tensile strength.

[0059] Nylon yarn possesses high elastic modulus and good toughness. Its abrasion resistance stems from the energy absorption of chain segment sliding and hydrogen bond breaking under stress, rather than rigid resistance. Rubber grinding wheels, with their smooth and elastic surface, generate uniform friction when in contact with nylon yarn, preventing localized stress concentration that could lead to yarn breakage. Rubber grinding wheels can simulate the wear pattern of nylon yarn under low stress and high cycle counts, accurately reflecting its abrasion resistance and mass loss rate. Cotton yarn's abrasion resistance originates from inter-fiber friction and surface roughness; however, the inter-fiber bonding is weak, making it prone to fiber shedding due to friction. Wool grinding wheels, woven from wool fibers, have a rough and porous surface, generating friction similar to that between fabrics when in contact with cotton yarn, simulating fiber shedding. Wool grinding wheels can simulate the wear pattern of cotton yarn under moderate stress, accurately reflecting its fiber breakage rate and wear depth. The abrasion resistance of aramid yarn comes from the strong van der Waals forces and rigid skeleton between molecular chains, which can resist cutting and wear under high stress. The hardness of ceramic grinding wheels is similar to that of aramid yarn. During the friction process, it can generate wear similar to metal cutting, simulating the wear pattern under extreme conditions. Ceramic grinding wheels can simulate the wear pattern of aramid yarn under high stress and short time, accurately reflecting its fracture strength retention rate and abrasion life. Therefore, when testing the abrasion resistance of nylon yarn, cotton yarn, and aramid yarn, rubber grinding wheels should be used for testing nylon yarn, wool grinding wheels should be used for testing cotton yarn, and ceramic grinding wheels should be used for testing aramid yarn.

[0060] The implementation principle of the yarn strength testing device for spinning according to an embodiment of this application is as follows:

[0061] (1) Opening the sealing door 34 allows multiple yarns 2 that need to be tested to be placed between multiple movable clamps 11 and multiple fixed clamps 12. By rotating multiple threaded clamps 13 in conjunction with multiple movable clamps 11 and multiple fixed clamps 12, multiple yarns 2 can be fixed between multiple movable clamps 11 and multiple fixed clamps 12, thus preventing multiple yarns 2 from falling off during tensile, bending, torsion and abrasion strength tests, thereby ensuring the stability of yarn 2 strength testing.

[0062] (2) After the multiple yarns 2 are fixed, the sealing door 34 is closed. The temperature detector 37 can detect the temperature inside the test box 1. When the temperature inside the test box 1 is lower than 20 degrees, the temperature detector 37 will transmit the signal to the hot and cold air blower. The hot and cold air blower can blow hot air evenly into the test box 1 through the air inlet pipe 40, the fixed pipe 35 and multiple air outlets in sequence. The temperature inside the test box 1 can be heated by the circulation of hot air in the test box 1. Conversely, when the temperature inside the test box 1 is higher than 20 degrees, the temperature detector 37 will transmit the signal to the hot and cold air blower. The hot and cold air blower can blow cold air into the test box 1 through the fixed pipe 35 and multiple air outlets in sequence. The temperature inside the test box 1 can be cooled by the circulation of cold air in the test box 1. Therefore, by using the temperature detector 37 and the hot and cold air blower together, the temperature inside the test box 1 can be controlled between 18 and 22 degrees, so as to avoid the yarn 2 from being affected by temperature when the strength test is performed.

[0063] (3) When the yarn 2 is tested for tensile strength, the motor 14 can drive the movable rod 15, the compression spring 16, the fixed block 17, the wedge-shaped cone wheel 18 and the inclined cam 19 to rotate in sequence. Through the inclined taper of the inclined cam 19, the double-sided inclined block 20 and the fixed clamp 12 can be moved in sequence when the inclined cam 19 rotates. At the same time, with the elastic force of the telescopic spring 21, the double-sided inclined block 20 and the fixed clamp 12 can be moved left and right. In addition, with the movable clamp 11, the yarn 2 can be stretched back and forth, so that the tensile strength of the yarn 2 can be tested.

[0064] (4) When the yarn 2 is tested for torsion strength, the servo motor 8 can drive the speed regulating wheel 9, the rotating wheel 10 and the movable clamp 11 to rotate in sequence, and then cooperate with the fixed clamp 12 to perform torsion treatment on the yarn 2, so that the torsion strength of the yarn 2 can be tested.

[0065] (5) The electric telescopic rod 6 can drive the adjustment frame 7, servo motor 8, speed regulating wheel 9 and movable rack 27 to move left and right in sequence. When the adjustment frame 7 moves left and right, it will squeeze the inclined surface of the wedge block 26. With the elastic force of the connecting spring 23, it can drive the connecting frame 24, video sensor 38 and two movable wheels 25 to move up and down in sequence. When the two movable wheels 25 move down, they can bend and press down the yarn 2 with the grinding wheel 29. The bending force of the yarn 2 can be detected. Depending on the position of the adjustment frame 7 on the inclined surface of the wedge block 26, the range of downward movement of the two movable wheels 25 can be adjusted with the connecting spring 23, thereby adjusting the bending force of the yarn 2.

[0066] (6) The rotary motor 32 can drive one synchronous gear 30 to rotate, and the toothed belt 31 can drive two other synchronous gears 30 to rotate. Then, the three synchronous gears 30 can drive three grinding wheels 29 to rotate respectively. When the grinding wheels 29 rotate, they work with the two movable wheels 25 to press down on the yarn 2. The grinding wheels 29 will grind the yarn 2, and the abrasion resistance of the yarn 2 can be tested. At the same time, through the rotation of the grinding wheels 29 and the back and forth movement of the fixed clamp 12, the sliding wear test and rolling wear test of the yarn 2 can be performed, which can ensure the effect of the abrasion resistance test of the yarn 2.

[0067] (7) When the adjusting frame 7 moves left and right, it will squeeze the inclined surface of the wedge-shaped cone wheel 18. With the elastic force of the compression spring 16, the wedge-shaped cone wheel 18, the inclined cam 19 and the fixed block 17 can be driven to move up and down in sequence. In this way, the position of the double-sided inclined block 20 and the inclined cam 19 can be adjusted. Depending on the position of the double-sided inclined block 20 on the inclined cam 19, the range of the fixed clamp 12 can be adjusted, and the tension of the yarn 2 can be adjusted.

[0068] (8) When the speed regulating wheel 9 moves left and right, the position of the rotating wheel 10 on the speed regulating wheel 9 can be adjusted, thereby adjusting the speed of the speed regulating wheel 9. When the rotating wheel 10 is in contact with the position of the speed regulating wheel 9 with a smaller diameter, the speed of the rotating wheel 10 can be increased, thereby increasing the torque of the yarn 2. When the rotating wheel 10 is in contact with the position of the speed regulating wheel 9 with a larger diameter, the speed of the rotating wheel 10 can be decreased, thereby decreasing the torque of the yarn 2. Depending on the position of the rotating wheel 10 on the speed regulating wheel 9, the speed of the rotating wheel 10 can be adjusted while the rotation of the servo motor 8 remains unchanged, thereby adjusting the torque of the yarn 2.

[0069] (9) When the movable rack 27 moves left and right, it can drive the movable gear 33, the rotating disk 28, the rotary motor 32, the three synchronous gears 30, the toothed belt 31 and the three grinding wheels 29 to rotate in sequence. The position of the three grinding wheels 29 can be adjusted so that the corresponding grinding wheel 29 fits against the corresponding yarn 2 for grinding. The wear resistance of different yarns 2 can be tested.

[0070] (10) The drive motor 3 can drive the threaded rod 4 to rotate, which in turn drives the movable frame 5, infrared generator 22, electric telescopic rod 6, adjusting frame 7, servo motor 8, speed regulating wheel 9, motor 14, movable rod 15, compression spring 16, fixed block 17, wedge cone wheel 18, inclined cam 19, connecting spring 23, connecting frame 24, two movable wheels 25, wedge block 26, video sensor 38, rotating disk 28, rotary motor 32, three synchronous gears 30, toothed belt 31, three grinding wheels 29, movable gear 33 and movable rack 27 to move back and forth, thereby adjusting the position of inclined cam 19, three grinding wheels 29, two movable wheels 25 and speed regulating wheel 9. Infrared rays are emitted by the infrared generator 22 and received by multiple infrared receivers 39. The infrared generator 22 can transmit the signal to the drive motor 3, which can precisely control the start and stop of the drive motor 3. This can then precisely control the stopping position of the inclined cam 19, the three grinding wheels 29, the two movable wheels 25, and the speed regulating wheel 9. This allows the inclined cam 19 to sequentially contact multiple double-sided inclined blocks 20, the speed regulating wheel 9 to sequentially contact multiple rotating wheels 10, and the three grinding wheels 29 and the two movable wheels 25 to sequentially contact multiple yarns 2. This allows the multiple yarns 2 in the test box 1 to be tested for tension, bending, torsion, and abrasion resistance in sequence, ensuring the efficiency of the testing of multiple yarns 2.

[0071] (11) The testing time for each yarn 2 is consistent. When the strength testing time of the yarn 2 below the current video sensor 38 is up, the adjustment frame 7 can be moved by the electric telescopic rod 6. The servo motor 8, speed adjustment wheel 9 and movable rack 27 can be moved in sequence to separate the two movable wheels 25 from the yarn 2, so as to avoid the two movable wheels 25 being interfered with by the yarn 2 when they are moving horizontally. When the next yarn 2 is tested for strength, the position of the adjustment frame 7 can be readjusted according to the type of yarn 2. When all the yarns 2 in the test box 1 have been tested, the state of the yarn 2 can be observed by opening the sealing door 34. If the yarn 2 is not broken, it means that the strength of the yarn 2 is qualified. If the yarn 2 is broken, it means that the strength quality of the yarn 2 is not qualified, thus ensuring the effect of yarn 2 testing.

[0072] (12) When the video sensor 38 moves back and forth, it can detect all types of yarn 2 in the detection box 1 in sequence. According to the detected yarn type 2, the video sensor 38 will transmit the signal to the electric telescopic rod 6, which can control the range of movement of the adjustment frame 7. When the detected yarn 2 is nylon yarn, the adjustment frame 7 will be in contact with the position with the largest outer diameter of the wedge cone wheel 18. The wedge cone wheel 18 can control the double-sided inclined block 20 to be in contact with the largest outer position of the inclined cam 19. When the inclined cam 19 rotates, the elastic force of the telescopic spring 21 can adjust the range of movement of the double-sided inclined block 20 and the fixed clamp 12 to the maximum, so that the tension is adjusted to the maximum when the nylon yarn is tested for tensile strength. The adjustment frame 7 will be in contact with the lowest position on the right side of the wedge block 26, in conjunction with the connecting spring 23. The elastic force can adjust the range of descent of the two movable wheels 25 to the minimum, so that the bending force of the nylon yarn is minimized when performing bending strength testing. When the adjusting frame 7 drives the speed regulating wheel 9 to move, the rotating wheel 10 will be in contact with the position with the smallest diameter of the speed regulating wheel 9. Thus, when the speed regulating wheel 9 rotates, the rotation speed of the rotating wheel 10 can be adjusted to the fastest. With the power of the servo motor 8 remaining unchanged, the torque of the nylon yarn is adjusted to the maximum when performing torsional strength testing. When the adjusting frame 7 drives the movable rack 27 to move, the rubber grinding wheel will be in contact with the nylon yarn. Thus, the rubber grinding wheel can be used to perform abrasion resistance testing on the nylon yarn. When the nylon yarn is tested for strength, the tensile strength, bending force, torsional force and abrasion resistance can be controlled at the optimal state, ensuring the effect of simultaneous testing of the tensile strength, bending force, torsional force and abrasion resistance of the nylon yarn.

[0073] (13) When the detected yarn 2 is cotton yarn, the adjusting frame 7 will be in contact with the middle position of the wedge-shaped conical wheel 18. The wedge-shaped conical wheel 18 can control the double-sided inclined block 20 to be in contact with the middle position of the inclined cam 19. When the inclined cam 19 rotates, the elastic force of the telescopic spring 21 can adjust the movement range of the double-sided inclined block 20 and the fixed clamp 12 to a moderate level, so that the tension is adjusted to a moderate level when the cotton yarn is tested for tensile strength. The adjusting frame 7 will be in contact with the middle position of the wedge block 26. The elastic force of the connecting spring 23 can adjust the range of descent of the two movable wheels 25 to a moderate level, so that the bending strength of the cotton yarn is tested for bending strength. When the force is adjusted to a moderate level, the rotating wheel 10 will be in contact with the middle position of the speed regulating wheel 9 when the adjusting frame 7 drives the speed regulating wheel 9 to move. Thus, when the speed regulating wheel 9 rotates, the speed of the rotating wheel 10 can be adjusted to a moderate level. With the power of the servo motor 8 remaining unchanged, the torque when the cotton yarn is tested for torsional strength is adjusted to a moderate level. When the adjusting frame 7 drives the movable rack 27 to move, the wool grinding wheel will be in contact with the cotton yarn. Thus, the wool grinding wheel can be used to test the abrasion resistance of the cotton yarn. When the cotton yarn is tested for strength, the tensile strength, bending force, torsional force and abrasion resistance can be controlled at the optimal state, ensuring the effect of simultaneous testing of the tensile strength, bending force, torsional force and abrasion resistance of the cotton yarn.

[0074] (14) When the detected yarn 2 is aramid yarn, the adjusting frame 7 will be in contact with the position with the smallest outer diameter of the wedge-shaped conical wheel 18. The wedge-shaped conical wheel 18 can control the double-sided inclined block 20 to be in contact with the smallest outer position of the inclined cam 19. When the inclined cam 19 rotates, the elastic force of the telescopic spring 21 can adjust the movement range of the double-sided inclined block 20 and the fixed clamp 12 to the minimum, so that the tension of the aramid yarn is adjusted to the minimum when performing tensile strength testing. The adjusting frame 7 will be in contact with the highest position on the left side of the wedge block 26. With the elastic force of the connecting spring 23, the range of descent of the two movable wheels 25 can be adjusted to the maximum, so that the bending force of the aramid yarn is adjusted to the maximum when performing bending strength testing. When the adjusting frame 7 drives the speed regulating wheel 9 to move, the rotating wheel 10 will be in contact with the position where the diameter of the speed regulating wheel 9 is the largest. Thus, when the speed regulating wheel 9 rotates, the speed of the rotating wheel 10 can be adjusted to the slowest. With the power of the servo motor 8 remaining unchanged, the torque when the aramid yarn is tested for torsional strength is adjusted to the minimum. When the adjusting frame 7 drives the movable rack 27 to move, the ceramic grinding wheel will be in contact with the aramid yarn. Thus, the ceramic grinding wheel can be used to test the abrasion resistance of the aramid yarn. When the aramid yarn is tested for strength, the tensile strength, bending force, torsional force and abrasion resistance can be controlled at the optimal state, ensuring the effect of simultaneous testing of the tensile strength, bending force, torsional force and abrasion resistance of the aramid yarn.

[0075] (15) Furthermore, based on the above principle, this application can automatically adjust the tensile strength, bending force, torsion force and abrasion wheel 29 according to the different types of yarn 2. According to the type of yarn 2, the optimal tensile strength, bending force, torsion force and abrasion resistance can be automatically adjusted to detect the tensile, bending, torsion and abrasion strength of the corresponding yarn 2. At the same time, this application can simultaneously adjust the tensile, bending, torsion and abrasion strength of yarn 2, which can improve the efficiency of testing various strengths of yarn 2. It is not necessary to test each strength of yarn 2 one by one, which can ensure the test effect of yarn 2.

[0076] (16) Simultaneously detecting the type of yarn 2, controlling only one drive source of the electric telescopic rod 6 can realize the adjustment of various aspects of the tensile strength, bending force, torsional force and abrasion resistance of yarn 2, which can avoid the situation of incorrect adjustment, and at the same time save energy consumption. It is not necessary to control multiple drive sources to adjust the tensile strength, bending force, torsional force and abrasion resistance of yarn 2. If one drive source is misadjusted, the strength detection of yarn 2 will be inaccurate. This application can guarantee the accuracy of the strength adjustment of yarn 2. It can automatically adjust the tensile force, bending force, torsional force and abrasion wheel 29 according to the different types of yarn 2. When different yarns 2 are tested for strength, they do not need to be tested on different testing platforms, avoiding the introduction of human error, reducing the labor intensity of the staff, and ensuring the effect of the strength detection of each aspect of yarn 2.

[0077] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A yarn strength testing device for spinning, characterized in that: Includes a testing box (1), a testing assembly for testing multiple yarn (2) types, and a tensile assembly, a bending assembly, a torsion assembly and abrasion assembly for testing the tensile, bending, torsion and abrasion strength of the yarn (2); The detection assembly includes a movable frame (5) movably mounted on the detection box (1) and a video sensor (38), a clamping member for clamping multiple yarns (2), a moving member for translating the movable frame (5), and an adjusting member for adjusting the temperature inside the detection box (1). The stretching assembly includes a slanted cam (19) rotatably mounted on the movable frame (5), a plurality of double-sided slanted blocks (20) movably mounted in the detection box (1), and a translation component for driving the double-sided slanted blocks (20) to translate. The bending assembly includes two movable wheels (25) movably mounted on a movable frame (5) and a lifting component for lifting the two movable wheels (25) and the video sensor (38); The torsion assembly includes a speed regulating wheel (9) and a plurality of rotating wheels (10) rotatably disposed in the detection box (1), and a rotating component for driving the plurality of rotating wheels (10) to rotate. The polishing assembly includes three polishing wheels (29) rotatably mounted on a movable frame (5) and a synchronizing element for synchronizing the rotation of the three polishing wheels (29). The three polishing wheels (29) are a rubber polishing wheel, a wool polishing wheel, and a ceramic polishing wheel, respectively. The detection box (1) is also equipped with a power component for raising and lowering the inclined cam (19), switching the three grinding wheels (29), and adjusting the rotation speed of the rotating wheel (10). The raising and lowering component is automatically driven by the power component. The clamping components include multiple fixed clamps (12) and multiple movable clamps (11) movably disposed within the testing box (1), and threaded clamps (13) rotatably disposed on the multiple fixed clamps (12) and multiple movable clamps (11). The fixed clamps (12) are threadedly connected to the threaded clamps (13), and the movable clamps (11) are threadedly connected to the threaded clamps (13). The fixed clamps (12), movable clamps (11) and threaded clamps (13) are all movably fitted to the yarn (2). The translation component includes multiple telescopic springs (21) fixed in the detection box (1), a motor (14) fixed on the movable frame (5), a movable rod (15) rotatably set on the movable frame (5), a fixed square groove set in the movable rod (15), a compression spring (16) fixed in the fixed square groove, a wedge-shaped conical wheel (18) fixed on the inclined cam (19), and a fixed block (17) fixed on the wedge-shaped conical wheel (18). The multiple telescopic springs (21) are fixedly connected to multiple fixed clamps (12), and the multiple double-sided inclined blocks (20) are fixedly connected to multiple fixed clamps (12). The movable rod (15) is fixedly connected to the output end of the motor (14), the compression spring (16) is fixedly connected to the fixed block (17), the fixed block (17) is slidably connected to the fixed square groove, and the multiple double-sided inclined blocks (20) are all movably attached to the inclined cam (19).

2. The yarn strength testing device for spinning according to claim 1, characterized in that: The rotating component includes a servo motor (8) fixed on the movable frame (5), multiple movable clamps (11) are fixedly connected to multiple rotating wheels (10) respectively, the speed regulating wheel (9) is fixedly connected to the output shaft of the servo motor (8), and multiple rotating wheels (10) are all in movable contact with the speed regulating wheel (9).

3. The yarn strength testing device for spinning according to claim 1, characterized in that: The lifting component includes a connecting square groove set on the movable frame (5), a connecting spring (23) fixed in the connecting square groove, and a connecting frame (24) fixed on the connecting spring (23). Both movable wheels (25) are fixedly connected to the connecting frame (24), and both movable wheels (25) are movably attached to the yarn (2). The connecting frame (24) is slidably connected to the connecting square groove.

4. The yarn strength testing device for spinning according to claim 3, characterized in that: The synchronizing component includes a rotating disk (28) rotatably mounted on a movable frame (5), three synchronizing gears (30) and a toothed belt (31) rotatably mounted on the rotating disk (28), and a rotary motor (32) fixed on the rotating disk (28). The three synchronizing gears (30) are coaxially fixed with the three grinding wheels (29), and the three synchronizing gears (30) are meshed with the toothed belt (31) for transmission. The three grinding wheels (29) are rotatably connected to the yarn (2), and one synchronizing gear (30) is fixedly connected to the output end of the rotary motor (32).

5. The yarn strength testing device for spinning according to claim 4, characterized in that: The power components include an adjustment frame (7) movably mounted on the movable frame (5), a movable rack (27) fixed on the adjustment frame (7), a movable gear (33) fixed on the rotating disk (28), an electric telescopic rod (6) fixed on the movable frame (5), and a wedge block (26) fixed on the connecting frame (24). The adjustment frame (7) is fixedly connected to the output end of the electric telescopic rod (6). The adjustment frame (7) is movably fitted with the inclined surface of the wedge block (26). The adjustment frame (7) is movably fitted with the inclined surface of the wedge cone wheel (18). The movable gear (33) meshes with the movable rack (27).

6. The yarn strength testing device for spinning according to claim 1, characterized in that: The moving part includes a threaded rod (4) rotatably disposed in the detection box (1), a drive motor (3) fixed on the detection box (1), an infrared generator (22) fixed on the movable frame (5), and multiple infrared receivers (39) fixed in the detection box (1). The multiple infrared receivers (39) are electrically connected to the infrared generator (22). The threaded rod (4) is threadedly connected to the movable frame (5). The threaded rod (4) is fixedly connected to the output end of the drive motor (3). The multiple infrared receivers (39) are respectively located below multiple fixed clamps (12). The infrared generator (22) is electrically connected to the drive motor (3).

7. The yarn strength testing device for spinning according to claim 1, characterized in that: The regulating components include a temperature detector (37) fixed on the detection box (1), a fixed pipe (35) and an air inlet pipe (40), a hot and cold air fan connected to the air inlet pipe (40), multiple air outlets set on the fixed pipe (35) and a sealing door (34) movably set on the detection box (1). The air inlet pipe (40) is connected to the fixed pipe (35), and the hot and cold air fan is electrically connected to the temperature detector (37).

8. The yarn strength testing device for spinning according to claim 3, characterized in that: The video sensor (38) is fixedly connected to the connecting frame (24), and the video sensor (38) is located above the yarn (2).

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