Device and method for detecting elasticity of twisted high-elastic spandex filaments

Abstract

The invention discloses a device and method for detecting elasticity of twisted high-elasticity spandex filaments, a tension meter is fixedly arranged at the front end of a bearing plate and located over each containing cavity, and a pull ring is fixedly arranged at the bottom of each tension meter, and relates to the technical field of elasticity detection. According to the device and method for detecting the elasticity of the twisted high-elastic spandex filaments, through mutual cooperation of the tension meter, the friction mechanism, the clamping and fixing mechanism, the lead screw, the worm gear, the rotating shaft and the worm sleeve, the elasticity of the multiple twisted high-elastic spandex filaments can be detected at the same time, the detection efficiency is improved, and in the process of detecting the elasticity of the high-elastic spandex filaments, the detection accuracy is improved. According to the method, the friction environment of the high-elastic spandex yarn in actual use can be simulated, and the simulation ensures that the detection result can be closer to the use scene of the real world, so that the elastic performance of the high-elastic spandex yarn in actual application is more accurately reflected, the idealization of the detection scene is avoided, and the reliability of the detection result is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of elasticity detection, and in particular to a device and method for detecting the elasticity of a twisted high-elastic spandex yarn. Background Art

[0002] As a highly elastic chemical fiber, spandex yarn is widely used in textile, clothing, medical and other fields. Its excellent elastic properties enable spandex yarn to significantly improve the elasticity and comfort of the product during the weaving process, especially when blended or interwoven with other fibers. However, twisting, as an important link in the processing of spandex yarn, has a direct impact on the elastic properties of spandex yarn. After twisting, the internal structure, interaction between fibers and overall mechanical properties of spandex yarn will change to a certain extent. Therefore, it is necessary to use special testing equipment to evaluate its elastic properties.

[0003] A refined detection device for the tensile elasticity of spandex yarn disclosed in the patent application with reference publication number CN209992296U clamps the spandex yarn by a fixed electromagnetic clamping device and a movable electromagnetic device and measures the tension through a tension sensor, which is more accurate than mechanical measurement. The guide rod, slide rail and slider fix the positioning plate at the same time to ensure that there will be no interference such as tilting during detection. The temperature and humidity sensor and the connecting pipe can detect and adjust the temperature and humidity in the chassis to ensure the accuracy of the detection.

[0004] Comprehensive analysis of the above reference patents shows the following defects:

[0005] The existing device and method for detecting the elasticity of high-elastic spandex yarn after twisting, in the process of elasticity detection of the twisted high-elastic spandex yarn, is difficult to simulate the various friction environments of the high-elastic spandex yarn in actual use, and the detection scene is relatively idealized, which causes the detection result to easily deviate from the actual situation, and thus cannot accurately reflect the elastic performance of the high-elastic spandex yarn in actual application, affecting the reliability of the detection result. Therefore, it is necessary to provide a device and method for detecting the elasticity of high-elastic spandex yarn after twisting to solve the above technical problems. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a device and method for detecting the elasticity of high-elastic spandex yarn after twisting, which solves the problem that in the process of elasticity detection of the twisted high-elastic spandex yarn, it is difficult to simulate the various friction environments of the high-elastic spandex yarn in actual use, and the detection scene is relatively idealized, which makes the detection result easily deviate from the actual situation, thereby failing to accurately reflect the elastic performance of the high-elastic spandex yarn in actual applications, affecting the reliability of the detection result.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for detecting elasticity of high-elastic spandex yarn after twisting, comprising:

[0008] A carrying plate, a plurality of accommodating cavities are evenly provided on the upper part of the carrying plate from left to right, a plurality of slide grooves are evenly provided on the lower part of the carrying plate from left to right, a dynamometer is fixedly provided at the front end of the carrying plate and directly above each accommodating cavity, a pull ring is fixedly provided at the bottom of each dynamometer for connecting one end of the high-elastic spandex yarn, a first convex plate is fixedly provided at the rear end of the carrying plate and directly above each slide groove, a accommodating box is fixedly provided at the rear end bottom of the carrying plate, a screw rod is rotatably provided at the bottom of each first convex plate, a worm gear located in the accommodating box is fixedly provided at the bottom of each screw rod, a rotating shaft is rotatably provided between the left and right side walls of the inner cavity of the accommodating box, a plurality of worm sleeves are evenly fixedly provided on the outside of the rotating shaft, each of the worm sleeves is meshed with the corresponding worm gear, a servo motor is fixedly provided on the right side of the accommodating box, a second convex plate is fixedly provided at the rear end of the carrying plate and directly above each accommodating cavity, and a T-shaped plug rod is slidably penetrated in each second convex plate;

[0009] A plurality of friction mechanisms are used to simulate the friction environment of the high-elastic spandex yarn when it is actually used, and the plurality of friction mechanisms are rotatably connected between the upper and lower walls of the corresponding accommodating chambers;

[0010] A plurality of clamping mechanisms are used for clamping the other end of the high-elastic spandex yarn, and the plurality of clamping mechanisms are respectively slidably connected in corresponding slide grooves.

[0011] Preferably, the output shaft of the servo motor passes through the right wall of the accommodating box and is fixedly connected to the right end of the rotating shaft, a base is fixedly arranged between the supporting plate and the bottom of the accommodating box, a baffle is fixedly arranged on the lower part of the T-shaped plug rod, and a spring is arranged on the outer part of the T-shaped plug rod, and the spring is located between the second convex plate and the baffle.

[0012] Preferably, each of the friction mechanisms comprises a vertical rod, the vertical rod is rotatably connected between the upper and lower walls of the accommodating cavity, and the outer fixed sleeve of the vertical rod is provided with a triangular column, and the cross section of the triangular column is an equilateral triangle.

[0013] Preferably, three grooves are evenly arranged on the outer wall of the triangular prism, and a first friction pad is detachably arranged in each groove via a first Velcro. Three iron arc-shaped cover plates are evenly rotated on the outer wall of the triangular prism, and the three iron arc-shaped cover plates correspond to the three grooves.

[0014] Preferably, each of the iron arc-shaped cover plates is detachably provided with a second friction pad on one side close to the triangular column through a second Velcro, and three positioning holes are evenly arranged in a circle on the top of the triangular column. The friction coefficients of the three first friction pads are different, and the friction coefficient of each first friction pad is the same as the adjacent second friction pad.

[0015] Preferably, the bottom of the T-shaped rod passes through the corresponding positioning hole, three magnet sheets are evenly and fixedly arranged around the outer wall of the triangular column, and each of the iron arc-shaped cover plates is attracted to the magnet sheet at the corresponding position by magnetic force.

[0016] Preferably, each of the clamping mechanisms comprises a slider, which is slidably connected in a slide groove, a U-shaped plate is fixedly provided at the front end of the slider, and a guide groove is provided on the left side wall of the inner cavity of the U-shaped plate.

[0017] Preferably, a threaded rod is threaded through the front end of the U-shaped plate, and a pressure plate is rotatably arranged at the rear end of the threaded rod into the U-shaped plate, and the left end of the pressure plate slides through the guide groove.

[0018] Preferably, an internal threaded sleeve is fixedly provided at the rear end of the slider, and the internal threaded sleeve is threadedly provided on the outside of the screw rod, and a plurality of anti-slip teeth are fixedly provided at the rear end of the pressure plate and the rear wall of the inner cavity of the U-shaped plate.

[0019] The present invention also provides a method for detecting elasticity of high-elastic spandex yarn after twisting, using a device for detecting elasticity of high-elastic spandex yarn after twisting, and the specific method comprises the following steps:

[0020] Step 1: fasten one end of the twisted high-elastic spandex yarns to each pull ring, and then clamp the other end with the clamping mechanism directly below, so that the initial values ​​displayed on each tensile gauge are consistent, and record the position of the clamping mechanism and the reading on the tensile gauge, and make the high-elastic spandex yarn pass through the corresponding friction mechanism;

[0021] Step 2: Then start the servo motor to make the output shaft of the servo motor rotate back and forth, drive the rotating shaft and each worm sleeve to rotate, and the rotation of the worm sleeve drives the worm wheel and the lead screw to rotate, so that the clamping mechanism first slides down along the slide groove, and then slides up, reciprocating up and down, repeatedly pulling the high-elastic spandex yarn, and at the same time, under the action of the friction mechanism, simulate the friction of the high-elastic spandex yarn in the actual use environment;

[0022] Step 3: After reaching the preset detection time, place the clamping mechanism at the original position, turn off the servo motor, read the reading on the dynamometer, and compare the reading with the original reading. Within a certain range, the smaller the difference, the better the elasticity of the high-elastic spandex yarn. Conversely, the larger the difference, the worse the elasticity of the high-elastic spandex yarn.

[0023] Beneficial Effects

[0024] The present invention provides a device and method for detecting the elasticity of high-elastic spandex yarn after twisting. Compared with the prior art, it has the following beneficial effects:

[0025] 1. A device and method for detecting the elasticity of twisted high-elastic spandex yarns. Through the cooperation between a dynamometer, a friction mechanism, a clamping mechanism, a screw, a worm gear, a rotating shaft and a worm sleeve, multiple twisted high-elastic spandex yarns can be tested for elasticity at the same time, thereby improving the detection efficiency. In the process of elasticity detection of the high-elastic spandex yarns, the friction environment of the high-elastic spandex yarns in actual use can be simulated. This simulation ensures that the test results can be closer to the real-world usage scenarios, thereby more accurately reflecting the elastic performance of the high-elastic spandex yarns in actual applications, avoiding idealization of the detection scenarios, and ensuring the reliability of the test results.

[0026] 2. A device and method for detecting the elasticity of highly elastic spandex yarn after twisting. Through the mutual cooperation among a triangular column, a first friction pad, an iron arc cover plate and a second friction pad, three commonly used friction pads with different friction coefficients can be adhered to the side walls of the triangular column in advance. By pulling the T-shaped rod upward, the bottom of the T-shaped rod is disengaged from the positioning hole, the position of the triangular column is unlocked, and then the triangular column is rotated to quickly switch the first friction pad and the second friction pad with the required friction coefficient to the front, so that the highly elastic spandex yarn passes through between the first friction pad and the second friction pad. A variety of friction environments can be simulated to meet different elasticity detection requirements. Then the pull on the T-shaped rod is released. Under the elastic action of the spring, the T-shaped rod moves down and is inserted into the corresponding positioning hole to lock the position of the triangular column again. The operation is convenient and efficient.

[0027] 3. A device and method for detecting the elasticity of high-elastic spandex yarn after twisting. Through the cooperation between the first Velcro, the second Velcro and the magnet sheet, the first friction pad in the groove can be quickly replaced, and the second friction pad in the iron arc cover can be quickly and flexibly replaced. The first friction pad and the second friction pad with the required friction coefficient can be replaced respectively, and the friction conditions in different scenes can be simulated to detect the elasticity of the high-elastic spandex yarn under the corresponding friction conditions. At the same time, it is easy to replace the severely worn first friction pad and the second friction pad to ensure continuous normal use.

[0028] 4. A device and method for detecting the elasticity of highly elastic spandex yarn after twisting. Through the mutual cooperation among a triangular prism, an iron arc cover plate and a magnet sheet, since the iron arc cover plate and the magnet sheet at the corresponding position are attracted to each other by magnetic force, a certain force is used to lift up one end of the iron arc cover plate to separate the iron arc cover plate from the magnet sheet, and the other end of the iron arc cover plate rotates around the surface of the triangular prism to open the iron arc cover plate, exposing the first friction pad, so that the highly elastic spandex yarn can quickly pass through the surface of the first friction pad, and then the iron arc cover plate is covered and restored to its original position, thereby achieving the purpose of the highly elastic spandex yarn quickly passing through the groove and the iron arc cover plate, and the surface of the highly elastic spandex yarn passing through the groove and the iron arc cover plate contacts the first friction pad and the second friction pad, simulating a real friction environment to ensure the reliability of the subsequent elasticity detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a first stereogram of the present invention;

[0030] Figure 2 is a second stereogram of the present invention;

[0031] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0032] Figure 4 An exploded view of the present invention;

[0033] Figure 5 is a sectional perspective view of the receiving box of the present invention;

[0034] Figure 6 A three-dimensional diagram of a T-shaped plunger of the present invention;

[0035] Figure 7 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0036] Figure 8 is a three-dimensional diagram of the friction mechanism of the present invention;

[0037] Fig. 9 For the present invention Figure 8 A partial enlarged view of point C in the middle;

[0038] Fig.10 is an exploded view of the friction mechanism of the present invention;

[0039] Fig.11 For the present invention Fig.10 A partial enlarged view of point D in the middle;

[0040] Fig.12 For the present invention Fig.10 A partial enlarged view of point E in the middle;

[0041] Fig.13 is a three-dimensional diagram of the clamping mechanism of the present invention;

[0042] Fig.14 It is an exploded view of the clamping mechanism of the present invention.

[0043] In the figure: 1. load-bearing plate; 2. accommodating cavity; 3. slide groove; 4. dynamometer; 5. pull ring; 6. friction mechanism; 61. vertical rod; 62. triangular column; 63. first magic tape; 64. first friction pad; 65. iron arc cover plate; 66. second magic tape; 67. second friction pad; 68. positioning hole; 69. magnet sheet; 7. clamping mechanism; 71. slider; 72. U-shaped plate; 73. guide groove; 74. pressure plate; 75. threaded rod; 76. internal threaded sleeve; 8. first convex plate; 9. accommodating box; 10. screw rod; 11. worm gear; 12. rotating shaft; 13. worm sleeve; 14. servo motor; 15. base; 16. second convex plate; 17. T-shaped plug rod; 18. baffle; 19. spring. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The present invention provides two technical solutions:

[0046] like Figures 1 to 7 The first embodiment is shown: a device for detecting elasticity of high-elastic spandex yarn after twisting, comprising:

[0047] A load-bearing plate 1, a plurality of accommodating cavities 2 are evenly provided on the upper part of the load-bearing plate 1 from left to right, a plurality of slide grooves 3 are evenly provided on the lower part of the load-bearing plate 1 from left to right, a tension gauge 4 is fixedly provided at the front end of the load-bearing plate 1 and directly above each accommodating cavity 2, a pull ring 5 is fixedly provided at the bottom of each tension gauge 4 for connecting one end of a high-elastic spandex yarn, a first convex plate 8 is fixedly provided at the rear end of the load-bearing plate 1 and directly above each slide groove 3, a accommodating box 9 is fixedly provided at the bottom of the rear end of the load-bearing plate 1, and a screw rod 1 is rotatably provided at the bottom of each first convex plate 8 0, the bottom of each screw rod 10 rotates through the top of the accommodating box 9 and is fixedly provided with a worm wheel 11 located in the accommodating box 9, a rotating shaft 12 is rotatably provided between the left and right side walls of the inner cavity of the accommodating box 9, and a plurality of worm sleeves 13 are evenly and fixedly sleeved on the outside of the rotating shaft 12, and each worm sleeve 13 is meshed with the corresponding worm wheel 11, a servo motor 14 is fixedly provided on the right side of the accommodating box 9, and a second convex plate 16 is fixedly provided at the rear end of the carrier plate 1 and directly above each accommodating cavity 2, and a T-shaped plug rod 17 is slidably penetrated in each second convex plate 16;

[0048] A plurality of friction mechanisms 6 are used to simulate the friction environment of the high-elastic spandex yarn in actual use, and the plurality of friction mechanisms 6 are rotatably connected between the upper and lower walls of the corresponding accommodating chamber 2;

[0049] A plurality of clamping mechanisms 7 are used to clamp the other end of the high-elastic spandex yarn, and the plurality of clamping mechanisms 7 are slidably connected in the corresponding slide grooves 3 respectively.

[0050] Through the mutual cooperation among the dynamometer 4, the friction mechanism 6, the clamping mechanism 7, the screw 10, the worm gear 11, the rotating shaft 12 and the worm sleeve 13, the elasticity test can be performed on multiple twisted high-elastic spandex yarns at the same time, thereby improving the detection efficiency. In the process of elasticity test on the high-elastic spandex yarn, the friction environment of the high-elastic spandex yarn in actual use can be simulated. This simulation ensures that the test results can be closer to the real-world usage scenarios, thereby more accurately reflecting the elastic performance of the high-elastic spandex yarn in actual applications, avoiding the idealization of the detection scenario, and ensuring the reliability of the test results.

[0051] like Figures 8 to 14The second embodiment is shown, and the main difference from the first embodiment is that: a device for detecting the elasticity of high-elastic spandex yarn after twisting, the output shaft of the servo motor 14 passes through the right wall of the accommodating box 9 and is fixedly connected to the right end of the rotating shaft 12, a base 15 is fixedly arranged between the bearing plate 1 and the bottom of the accommodating box 9, a baffle 18 is fixedly sleeved on the lower part of the T-shaped plug rod 17, a spring 19 is sleeved on the outer part of the T-shaped plug rod 17, and the spring 19 is located between the second convex plate 16 and the baffle 18, each friction mechanism 6 includes a vertical rod 61, and the vertical rod 61 rotates Connected between the upper and lower walls of the accommodating chamber 2, the outer fixed sleeve of the vertical rod 61 is provided with a triangular column 62, the cross section of the triangular column 62 is an equilateral triangle, and the outer wall of the triangular column 62 is evenly provided with three grooves, each of which is detachably provided with a first friction pad 64 through a first Velcro 63, and the outer wall of the triangular column 62 is evenly rotated with three iron arc cover plates 65, the three iron arc cover plates 65 correspond to the three grooves, and each iron arc cover plate 65 is detachably provided with a second Velcro 66 on one side close to the triangular column 62. A second friction pad 67 is arranged, three positioning holes 68 are evenly arranged on the top of the triangular column 62, the friction coefficients of the three first friction pads 64 are different, and each first friction pad 64 has the same friction coefficient as the adjacent second friction pad 67. The bottom of the T-shaped plug rod 17 passes through the corresponding positioning hole 68. Three magnet pieces 69 are evenly fixedly arranged on the outer wall of the triangular column 62. Each iron arc cover plate 65 is attracted to the magnet piece 69 at the corresponding position by magnetic force. Each clamping mechanism 7 includes a slider 71, which is slidably connected to the slider 71. In the slide groove 3, a U-shaped plate 72 is fixedly provided at the front end of the slider 71, and a guide groove 73 is opened on the left side wall of the inner cavity of the U-shaped plate 72. A threaded rod 75 is threaded through the front end of the U-shaped plate 72, and the rear end of the threaded rod 75 extends into the U-shaped plate 72 and is rotatably provided with a pressure plate 74. The left end of the pressure plate 74 slides through the guide groove 73, and an internal threaded sleeve 76 is fixedly provided at the rear end of the slider 71. The internal threaded sleeve 76 is threadedly sleeved on the outside of the screw rod 10, and a plurality of anti-slip teeth are fixedly provided at the rear end of the pressure plate 74 and the rear wall of the inner cavity of the U-shaped plate 72.

[0052] Through the cooperation among the triangular column 62, the first friction pad 64, the iron arc cover plate 65 and the second friction pad 67, three commonly used friction pads with different friction coefficients can be adhered to the side walls of the triangular column 62 in advance, and the T-shaped plug rod 17 is pulled upward to disengage the bottom of the T-shaped plug rod 17 from the positioning hole 68 to release the lock on the position of the triangular column 62, and then the triangular column 62 is rotated to quickly switch the first friction pad 64 and the second friction pad 67 with the required friction coefficient to the front, so that the high-elastic spandex yarn passes through the first friction pad 64 and The first and second friction pads 67 can simulate a variety of friction environments to meet different elasticity detection requirements, and then release the pull on the T-shaped rod 17. Under the elastic action of the spring 19, the T-shaped rod 17 moves down and is inserted into the corresponding positioning hole 68 to lock the position of the triangular column 62 again. The operation is convenient and efficient. Through the mutual cooperation between the first Velcro 63, the second Velcro 66 and the magnet sheet 69, the first friction pad 64 in the groove can be quickly replaced, and the second friction pad 67 in the iron arc cover plate 65 can be quickly and flexibly replaced. The first friction pad 64 and the second friction pad 67 with the required friction coefficient can simulate the friction conditions in different scenes and detect the elasticity of the high-elastic spandex yarn under the corresponding friction conditions. At the same time, it is convenient to replace the first friction pad 64 and the second friction pad 67 that are seriously worn to ensure continuous normal use. Through the mutual cooperation between the triangular column 62, the iron arc cover plate 65 and the magnet sheet 69, since the iron arc cover plate 65 and the magnet sheet 69 at the corresponding position are attracted by magnetic force, a certain force is used to open one end of the iron arc cover plate 65, so that the iron arc cover plate 65 and the magnet sheet 69 are attracted by magnetic force. 9, the other end of the iron arc cover plate 65 rotates around the surface of the triangular column 62, so that the iron arc cover plate 65 can be opened to expose the first friction pad 64, which is convenient for the high-elastic spandex yarn to quickly pass through the surface of the first friction pad 64, and then the iron arc cover plate 65 is covered and restored to its original position, so as to achieve the purpose of the high-elastic spandex yarn quickly passing through the groove and the iron arc cover plate 65. The surface of the high-elastic spandex yarn passing through the groove and the iron arc cover plate 65 contacts the first friction pad 64 and the second friction pad 67, simulating a real friction environment and ensuring the reliability of the subsequent elasticity test results.

[0053] The embodiment of the present invention further provides a method for detecting elasticity of a high-elastic spandex yarn after twisting, using a device for detecting elasticity of a high-elastic spandex yarn after twisting. The specific method includes the following steps:

[0054] Step 1, fasten one end of the twisted high-elastic spandex yarns to each pull ring 5, and then clamp the other end with the clamping mechanism 7 directly below, that is, by screwing the threaded rod 75, push the pressing plate 74 backward, and use the pressing plate 74 and the rear wall of the inner cavity of the U-shaped plate 72 to clamp the other end of the high-elastic spandex yarn, so that the initial value displayed on each tensile gauge 4 is consistent. Since the front end of the load-bearing plate 1 and the right side of each slide groove 3 are provided with scale lines, by observing the scale lines, the position of the clamping mechanism 7 and the reading on the tensile gauge 4 are recorded at this time, and the high-elastic spandex yarn passes through the interior of the corresponding friction mechanism 6;

[0055] Step 2, then start the servo motor 14, so that the output shaft of the servo motor 14 rotates back and forth, driving the rotating shaft 12 and each worm sleeve 13 to rotate, and the worm sleeve 13 rotates to drive the worm wheel 11 and the screw 10 to rotate, so that the clamping mechanism 7 first slides downward along the slide groove 3, and then slides upward, reciprocating up and down, repeatedly pulling the high-elastic spandex yarn, and at the same time, under the action of the friction mechanism 6, the surface of the high-elastic spandex yarn contacts the first friction pad 64 and the second friction pad 67, simulating the friction of the high-elastic spandex yarn in the actual use environment;

[0056] Step 3: After reaching the preset detection time, the clamping mechanism 7 is located at the original position, the servo motor 14 is turned off, the reading on the dynamometer 4 is read, and the reading is compared with the original reading. Within a certain range, the smaller the difference, the better the elasticity of the high-elastic spandex yarn. Conversely, the larger the difference, the worse the elasticity of the high-elastic spandex yarn.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting elasticity of high-elastic spandex yarn after twisting, characterized in that: include: A carrying plate, a plurality of accommodating cavities are evenly provided on the upper part of the carrying plate from left to right, a plurality of slide grooves are evenly provided on the lower part of the carrying plate from left to right, a dynamometer is fixedly provided at the front end of the carrying plate and directly above each accommodating cavity, a pull ring is fixedly provided at the bottom of each dynamometer for connecting one end of the high-elastic spandex yarn, a first convex plate is fixedly provided at the rear end of the carrying plate and directly above each slide groove, a accommodating box is fixedly provided at the rear end bottom of the carrying plate, a screw rod is rotatably provided at the bottom of each first convex plate, a worm gear located in the accommodating box is fixedly provided at the bottom of each screw rod, a rotating shaft is rotatably provided between the left and right side walls of the inner cavity of the accommodating box, a plurality of worm sleeves are evenly fixedly provided on the outside of the rotating shaft, each of the worm sleeves is meshed with the corresponding worm gear, a servo motor is fixedly provided on the right side of the accommodating box, a second convex plate is fixedly provided at the rear end of the carrying plate and directly above each accommodating cavity, and a T-shaped plug rod is slidably penetrated in each second convex plate; A plurality of friction mechanisms are used to simulate the friction environment of the high-elastic spandex yarn when it is actually used, and the plurality of friction mechanisms are rotatably connected between the upper and lower walls of the corresponding accommodating chambers; A plurality of clamping mechanisms are used for clamping the other end of the high-elastic spandex yarn, and the plurality of clamping mechanisms are respectively slidably connected in corresponding slide grooves.

2. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 1, characterized in that: The output shaft of the servo motor passes through the right wall of the storage box and is fixedly connected to the right end of the rotating shaft. A base is fixedly arranged between the bearing plate and the bottom of the storage box. A baffle is fixedly sleeved on the lower part of the T-shaped plug rod. A spring is sleeved on the outside of the T-shaped plug rod. The spring is located between the second convex plate and the baffle.

3. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 1, characterized in that: Each of the friction mechanisms comprises a vertical rod, which is rotatably connected between the upper and lower walls of the accommodating cavity. A triangular column is fixedly sleeved outside the vertical rod, and the cross section of the triangular column is an equilateral triangle.

4. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 3, characterized in that: The outer wall of the triangular column is evenly provided with three grooves, each groove is provided with a first friction pad detachably provided via a first Velcro, and the outer wall of the triangular column is evenly provided with three iron arc-shaped cover plates rotating in a circle, and the three iron arc-shaped cover plates correspond to the three grooves.

5. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 4, characterized in that: Each of the iron arc-shaped cover plates is detachably provided with a second friction pad on one side close to the triangular column through a second Velcro, and three positioning holes are evenly arranged around the top of the triangular column. The friction coefficients of the three first friction pads are different, and each first friction pad has the same friction coefficient with the adjacent second friction pad.

6. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 5, characterized in that: The bottom of the T-shaped plug rod passes through the corresponding positioning hole, and three magnet sheets are evenly and fixedly arranged on the outer wall of the triangular column. Each of the iron arc-shaped cover plates is adsorbed to the magnet sheet at the corresponding position by magnetic force.

7. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 1, characterized in that: Each of the clamping mechanisms comprises a slider which is slidably connected in a slide groove. A U-shaped plate is fixedly arranged at the front end of the slider, and a guide groove is provided on the left side wall of the inner cavity of the U-shaped plate.

8. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 7, characterized in that: The front end thread of the U-shaped plate is penetrated by a threaded rod, the rear end of the threaded rod extends into the U-shaped plate and is rotatably provided with a pressing plate, and the left end of the pressing plate slides through the guide groove.

9. The device for detecting elasticity of high-elastic spandex yarn after twisting according to claim 8, characterized in that: The rear end of the slider is fixedly provided with an internal thread sleeve, which is threadedly sleeved on the outside of the screw rod. The rear end of the pressure plate and the rear wall of the inner cavity of the U-shaped plate are both fixedly provided with a plurality of anti-slip teeth.

10. A method for detecting the elasticity of high-elastic spandex yarn after twisting, characterized in that: Using the device for detecting elasticity of high-elastic spandex yarn after twisting as claimed in any one of claims 1 to 9, the method comprises the following steps: Step 1: fasten one end of the twisted high-elastic spandex yarns to each pull ring, and then clamp the other end with the clamping mechanism directly below, so that the initial values ​​displayed on each tensile gauge are consistent, and record the position of the clamping mechanism and the reading on the tensile gauge, and make the high-elastic spandex yarn pass through the corresponding friction mechanism; Step 2: Then start the servo motor to make the output shaft of the servo motor rotate back and forth, drive the rotating shaft and each worm sleeve to rotate, and the rotation of the worm sleeve drives the worm wheel and the lead screw to rotate, so that the clamping mechanism first slides down along the slide groove, and then slides up, reciprocating up and down, repeatedly pulling the high-elastic spandex yarn, and at the same time, under the action of the friction mechanism, simulate the friction of the high-elastic spandex yarn in the actual use environment; Step 3: After reaching the preset detection time, place the clamping mechanism at the original position, turn off the servo motor, read the reading on the dynamometer, and compare the reading with the original reading. Within a certain range, the smaller the difference, the better the elasticity of the high-elastic spandex yarn. Conversely, the larger the difference, the worse the elasticity of the high-elastic spandex yarn.

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