Textile yarn tensile fracture detection equipment

Abstract

The invention discloses textile yarn tensile fracture detection equipment which comprises a detection table, a movable seat and a traction seat, a linear driving oil cylinder for horizontally pulling the traction seat is fixed at the end part of the detection table, and a tension detector connected with the movable seat is arranged at the other end of the detection table; the roller shaft with the multiple yarn sleeves is installed in the movable seat, the free ends of the multiple yarns extend out of the movable seat, and the clamping assemblies used for positioning the two ends of the detection section of the multiple strands of yarns are installed on the opposite end walls of the movable seat and the traction seat, so that on one hand, rapid positioning is achieved, and the two ends of the multiple strands of yarns do not need to be manually and independently positioned one by one; in addition, a guide adjusting mechanism is additionally arranged between the movable base and the traction base and used for converting original horizontal stretching into inclined stretching in different directions and angles, the actual use stretching environment is simulated, and the stretching performance of the yarn is more effectively reflected through multi-set detection contrastive analysis.

Description

Technical Field

[0001] The present invention relates to the field of detecting the tensile properties of yarns, and more specifically, to a textile yarn tensile fracture detection device. Background Art

[0002] Textile yarn is a kind of textile product, which is processed from various textile fibers into products of a certain fineness and is used in fields such as weaving, rope making, thread making, knitting, and embroidery. Textile yarns can be divided into staple fiber yarns, continuous filaments, etc. In daily life, due to different requirements for the elasticity, hardness, etc. of textile yarn products such as fabrics in different occasions, various yarns need to be subjected to performance detection before the production of textile yarn products.

[0003] Currently, in the process of detecting the tensile properties of textile yarns, the yarns are usually stretched horizontally or vertically. For example, the patent No. CN118150322B discloses an expanded strength detection device for yarn production, which realizes the function of automatically adjusting the effective length of yarn strength detection through the cooperation of a frame, a fixing structure, a detection device, and a clamping structure.

[0004] However, the detection method in the above patent content is to horizontally stretch the two ends of the yarn and fix them. The obtained detection results are too single. In actual use, the yarn may be subjected to tensile forces in different directions and angles. Therefore, the detection results obtained in a single direction are difficult to truly and effectively reflect the tensile properties of textile yarns.

[0005] In addition, the demand for the sample size of yarn detection is relatively large. Only by detecting through a single-group detection method, the obtained sample size is small, and it is necessary to manually replace the yarn samples many times. Moreover, when the yarn samples are limited, the two ends of a single textile yarn are respectively knotted and bound on the fixing structure manually, which is time-consuming and laborious and affects the detection efficiency.

[0006] Therefore, we propose a textile yarn tensile fracture detection device for the above problems. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems in the prior art that the single-group detection method of using a single horizontal stretch is difficult to comprehensively reflect the tensile properties of the yarn and requires multiple replacements of the yarn samples, which affects the detection work efficiency, and provides a textile yarn tensile fracture detection device.

[0008] The purpose of the present invention can be achieved by the following technical solutions: A textile yarn tensile fracture detection device includes a detection table, and a movable seat and a traction seat movably installed on its left and right sides. A linear drive oil cylinder for horizontally driving the traction seat is fixed at the end of the detection table, and a tensile force detector connected to the outer end of the movable seat is fixedly installed at the other end of the detection table.

[0009] A roller shaft is embedded and installed on the movable seat, and a plurality of thread sleeves wound with yarns are distributed on the roller shaft. An outlet for the yarn to pass through is formed on one side of the movable seat facing the traction seat. Magnetic attraction cavities I and II are respectively formed on the opposite end walls of the movable seat and the traction seat, and clamping assemblies for pressing and positioning the yarn are magnetically installed at the magnetic attraction cavities I and II;

[0010] At the end of the detection table close to the movable seat, a guiding and adjusting mechanism for guiding and deflecting the movement of the yarn is further provided. The guiding and adjusting mechanism includes a pair of rotating shafts reversely rotated and installed at the upper end of the detection table. Lower wire rollers are fixed to the outer ends of the pair of rotating shafts through inclined plates. Above the pair of lower wire rollers, a lifting frame is installed through a pair of linear lifting oil cylinders in a lifting manner, and a wire guiding assembly is installed at the lower end of the lifting frame.

[0011] Further, the clamping assembly includes a clamping seat and a fitting plate movably lifted on the clamping seat. A fitting cavity is formed in the middle position of the clamping seat, a clamping groove is formed in the middle of the fitting cavity, through grooves communicating with the clamping groove and corresponding to the positions of the thread sleeves are formed on both the left and right sides of the clamping seat, and a clamping cone head adapted to the clamping groove is provided at the bottom end of the fitting plate.

[0012] Further, the cross sections of the clamping cone head and the clamping groove are both semi-elliptical structures with wider upper parts and narrower lower parts, and the outer end wall of the clamping cone head is coated with an anti-slip pad.

[0013] Further, guide rods penetrating through the ends of the clamping seat are fixed to both the front and rear ends of the fitting plate, and magnetic strips are embedded in the left and right end walls of the clamping seat.

[0014] Further, electromagnetic sheets for magnetically attracting the clamping seat are embedded and installed on the inner walls of the magnetic attraction cavity I and the magnetic attraction cavity II. The outer end of the yarn is horizontally laid. The clamping seat is placed below the multi-strand yarn, the multi-strand yarn is placed on the fitting cavity and corresponds to the plurality of through grooves one by one, and then the fitting plate is pressed on the clamping seat. The lower end surface of the fitting plate is tightly fitted in the fitting cavity, and the clamping cone head presses the yarn into the clamping groove to complete the preliminary positioning of the yarn.

[0015] Further, a pair of electric push rods for downwardly pressing the fitting plate are fixedly installed at the tops of the movable seat and the traction seat. After the two clamping assemblies are respectively positioned on the movable seat and the traction seat, the electric push rods are used to drive downward to further press the fitting plate to improve the stability of both ends of the yarn detection section.

[0016] Further, support frames for rotatably mounting a pair of rotating shafts are fixed at both the front and rear ends of the detection table. A driving motor for rotatably driving one of the rotating shafts is fixed on one of the support frames, and gears respectively sleeved on the ends of the rotating shafts and meshing with each other are rotatably mounted on the other support frame.

[0017] Further, the wire assembly includes bridle racks fixed to the lower ends of the front and rear sides of the lifting frame, and an upper wire roller is rotatably mounted between the pair of bridle racks.

[0018] Further, wire grooves corresponding to the positions of the through grooves are formed in the end walls of the upper wire roller and the lower wire roller.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] (1) In this solution, a roller shaft with multiple wire sleeves is rotatably mounted on the movable seat. The wire sleeves are pre-wound with yarns to be detected, and the free ends of the multiple yarns extend out of the movable seat. Clamping assemblies for positioning both ends of the detection sections of multiple yarns are embedded and installed on the opposite end walls of the movable seat and the traction seat. On the one hand, rapid positioning is achieved, and horizontal traction is convenient after positioning, eliminating the need for manual individual front-and-back positioning of multiple yarns one by one. On the other hand, multiple groups of synchronous detections are realized. In addition, a guiding and adjusting mechanism is added between the movable seat and the traction seat to convert the original horizontal stretching into inclined stretching in different directions and angles, simulating the detection and comparison of yarns in different stretching environments during actual use, and more effectively reflecting the stretching performance of textile yarns.

[0021] (2) In this solution, multiple sets of coiled yarns are also centrally distributed on the roller shaft. After a set of stretching detection work is completed, the detected sections that have broken are cut off. The free ends of the yarns are retained at the clamping assembly on one side of the movable seat. The clamping assembly on one side of the traction seat is removed, the clamping assembly retaining the free ends of the yarns is tractionally stretched to the traction seat and magnetically positioned, and then another clamping assembly is repositioned on the yarn at the end of the lead-out port, realizing rapid traction and positioning of the detection sections of the next group of multiple yarns and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the structure of the present invention when the guiding and adjusting mechanism is removed;

[0024] Figure 3 is a schematic diagram of the structure of the present invention when the roller shaft with multiple wire sleeves is installed in the movable seat;

[0025] Figure 4 is a schematic diagram of the structure of the present invention when the roller shaft with multiple wire sleeves is detached from the movable seat;

[0026] Figure 5 This is a schematic structural diagram of the present invention after positioning the clamping assembly on the movable seat;

[0027] Figure 6 This is an exploded view of the clamping assembly of the present invention;

[0028] Figure 7 This is a schematic structural diagram of the present invention when stretching towards the traction seat side after positioning the end of the yarn by using the clamping assembly;

[0029] Figure 8 This is a cross-sectional view of the present invention when stretching outwards after positioning the end of the yarn by using one of the clamping assemblies;

[0030] Figure 9 This is a cross-sectional view of the present invention when positioning the other end of the yarn detection section by using another clamping assembly;

[0031] Figure 10 This is a schematic structural diagram of the guiding and adjusting mechanism of the present invention;

[0032] Figure 11 This is a schematic structural diagram of the guiding and adjusting mechanism from another perspective of the present invention;

[0033] Figure 12 This is a partial perspective view of the present invention when redirecting and stretching the yarn by using the guiding and adjusting mechanism;

[0034] Figure 13 This is a partial cross-sectional view of the present invention when redirecting and stretching the yarn by using the guiding and adjusting mechanism.

[0035] Explanation of the reference numerals in the figure:

[0036] 1. Detection table; 2. Movable seat; 201. Limit groove; 202. Lead-out port; 203. First magnetic attraction cavity; 3. Traction seat; 301. Second magnetic attraction cavity; 4. Tensile force detector; 5. Linear drive oil cylinder; 6. Roller shaft; 7. Line sleeve; 8. Yarn; 9. Clamping seat; 901. Through groove; 902. Clamping groove; 10. Fitting plate; 11. Clamping cone head; 12. Electric push rod; 13. Lifting frame; 14. Conducting wire assembly; 141. Bracket; 142. Upper wire guiding roller; 15. Linear lifting oil cylinder; 16. Rotating shaft; 17. Lower wire guiding roller; 18. Driving motor. Detailed implementation manners

[0037] The following will describe in clear and complete detail the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0038] Embodiment 1: The present invention discloses a textile yarn tensile fracture detection device. Please refer to Figure 1 、 Figure 2 , which includes a detection table 1 and movable seats 2 and traction seats 3 movably installed on its left and right sides. A linear drive oil cylinder 5 for horizontally driving the traction seat 3 is fixed at the end of the detection table 1, and a tensile force detector 4 connected to the outer end of the movable seat 2 is fixedly installed at the other end of the detection table 1.

[0039] Please refer to Figure 3 、 Figure 4 , a roller shaft 6 is embedded and installed on the movable seat 2. A limiting groove 201 for sleeving and installing the roller shaft 6 is provided on the movable seat 2. A plurality of thread sleeves 7 around which the yarn 8 is wound are distributed on the roller shaft 6. An outlet 202 for the yarn 8 to pass through is provided on the side of the movable seat 2 facing the traction seat 3. The multiple strands of yarn 8 to be detected are wound one by one in the winding area of the thread sleeve 7, and then the roller shaft 6 is rotatably installed in the limiting groove 201, and the ends of the multiple strands of yarn 8 are pulled out from the outlet 202.

[0040] Please refer to Figures 5 - 7 , magnetic attraction cavities one 203 and two 301 are respectively provided on the opposite end walls of the movable seat 2 and the traction seat 3. Clamping components for pressing and positioning the yarn 8 are magnetically installed at the magnetic attraction cavities one 203 and two 301. Among them, the clamping component includes a clamping seat 9 and a fitting plate 10 that moves up and down on the clamping seat 9. A fitting cavity is provided in the middle of the clamping seat 9, a clamping groove 902 is provided in the middle of the fitting cavity, through grooves 901 connected to the clamping groove 902 and corresponding to the position of the thread sleeve 7 are provided on both the left and right sides of the clamping seat 9, and a clamping cone head 11 adapted to the clamping groove 902 is provided at the bottom end of the fitting plate 10;

[0041] The cross-sections of the clamping cone head 11 and the clamping groove 902 are both semi-elliptical structures with a wider top and a narrower bottom, and an anti-slip pad is covered on the outer end wall of the clamping cone head 11. Guide rods penetrating through the ends of the clamping seat 9 are fixed at both the front and rear ends of the fitting plate 10. Magnetic strips are embedded on the left and right end walls of the clamping seat 9, and electromagnetic sheets for magnetically attracting the clamping seat 9 are embedded and installed on the inner walls of the magnetic attraction cavities one 203 and two 301. The fitting plate 10 and the clamping seat 9 can slide up and down and be separated.

[0042] Please refer to Figures 7 - 9, pull the end part of the multi-strand yarn 8 out of the lead-out port 202, so that the outer end part of the yarn 8 is horizontally placed. Place the clamping seat 9 at the lower end of the multi-strand yarn 8. The multi-strand yarn 8 is placed on the fitting cavity and corresponds to the positions of the multiple through slots 901 one by one. Then press the fitting plate 10 on the clamping seat 9. At this time, the clamping cone head 11 presses the yarn 8 down into the clamping groove 902. The lower end surface of the fitting plate 10 is tightly fitted in the fitting cavity to complete the preliminary positioning of the yarn 8.

[0043] Then hold the clamping assembly and move it horizontally to the traction seat 3. Use the magnetic attraction positioning between the clamping seat 9 and the second magnetic attraction cavity 301 to position the free end of the yarn 8 on the traction seat 3. In order to improve the stability of the yarn 8 on one side of the movable seat 2, in the same way, magnetically position the clamping seat 9 on the first magnetic attraction cavity 203, and then press down the fitting plate 10 to complete the clamping and positioning of the yarn 8 on one side of the movable seat 2.

[0044] In addition, please refer to Figure 2 , on the tops of the movable seat 2 and the traction seat 3, a pair of electric push rods 12 for pressing the fitting plate 10 downward are fixedly installed. After the two clamping assemblies are respectively positioned on the movable seat 2 and the traction seat 3, use the electric push rods 12 to drive downward to further press the fitting plate 10 to improve the stability of both ends of the detection section of the yarn 8.

[0045] Finally, use the linear drive oil cylinder 5 to move the traction seat 3 outward so that the yarn 8 is in a horizontally taut state. The yarn 8 between the pair of clamping assemblies is the detection section. Continuously drive the traction seat 3 outward. In this process, a tensile test operation is performed on the yarn 8. During the slow and uniform stretching process, the tensile force detector 4 records the tensile force until the yarn 8 breaks due to reaching the tensile limit, and record the tensile force and the stretching length.

[0046] In order to improve the accuracy of the performance detection of the yarn 8, after a set of tensile detection work is completed, cut off the broken detection section. The free end of the yarn 8 remains at the clamping assembly on one side of the movable seat 2. Remove the clamping assembly on one side of the traction seat 3. Pull and stretch the clamping assembly with the free end of the yarn 8 retained to the traction seat 3 and perform magnetic attraction positioning. Then re-position the other clamping assembly at the end of the yarn 8 at the lead-out port 202, realizing the rapid traction and positioning of the detection sections of the next set of multi-strand yarns 8, without manually tying knots at both ends of the detection sections of the yarns 8 one by one, improving the detection efficiency.

[0047] In addition, a plurality of wire sleeves 7 are provided. The plurality of wire sleeves 7 can be divided into multiple groups, and each group corresponds to different textile yarns, so as to obtain the anti-tensile properties of different yarns in the same detection environment. Through comparative analysis, the detection effect is effectively improved.

[0048] Embodiment 2: On the basis of Embodiment 1, a guiding and adjusting mechanism is added between the movable seat 2 and the traction seat 3 to convert the original horizontal stretching into inclined stretching in different directions and angles, so as to solve the problem that the detection results obtained by the existing method of horizontally stretching the two ends of the yarn are too single. The specific content is as follows:

[0049] Please refer to Figure 1 、 Figure 7 , a guiding and adjusting mechanism for guiding and redirecting the movement of the yarn 8 is also provided at the end of the detection table 1 close to the movable seat 2. Please refer to Figure 10 、 Figure 11 , the guiding and adjusting mechanism includes a pair of rotating shafts 16 reversely rotatably mounted on the upper end of the detection table 1. Lower wire rollers 17 are fixed to the outer ends of the pair of rotating shafts 16 through inclined plates. Support frames for rotatably mounting the pair of rotating shafts 16 are fixed at the front and rear ends of the detection table 1. A driving motor 18 for rotatingly driving one of the rotating shafts 16 is fixed on one of the support frames, and gears respectively sleeved on the ends of the rotating shafts 16 and meshing with each other are rotatably mounted on the other support frame.

[0050] Above the space between the pair of lower wire rollers 17, a lifting frame 13 is also mounted in a lifting manner through a pair of linear lifting oil cylinders 15. A wire guiding assembly 14 is mounted at the lower end of the lifting frame 13. The wire guiding assembly 14 includes connecting frames 141 fixed to the lower ends of the front and rear sides of the lifting frame 13. An upper wire roller 142 is rotatably mounted between the pair of connecting frames 141. Wire grooves corresponding to the positions of the through grooves 901 are formed on the end walls of the upper wire roller 142 and the lower wire rollers 17.

[0051] After the horizontal stretching detection work is completed, the two ends of the detection section of the next group of yarns 8 are positioned in the same manner as above by a pair of clamping assemblies. The lengths of the detection sections of the yarns 8 selected before and after are kept consistent. First, the traction seat 3 is used to pull outwards to straighten the detection section of the yarn 8. Please refer to Figure 12 、 Figure 13 , then the wire guiding assembly 14 is pressed down by the pair of linear lifting oil cylinders 15. The wire grooves on the upper wire roller 142 are sleeved on the multi-strand yarns 8 one by one. The yarn 8 is continuously pressed down until its two ends abut against the pair of lower wire rollers 17. During this process, the traction seat 3 is retracted towards the movable seat 2 side so that the detection section of the yarn 8 can be smoothly redirected and pulled by the pressed-down wire guiding assembly 14;

[0052] After the stretching angle is changed, the detection section of the yarn 8 is then stretched outwards by the traction seat 3 for stretching performance detection. The pair of lower wire rollers 17 can change their rotation angles, adjust the pressing distance of the wire guiding assembly 14 and the included angle between the pair of lower wire rollers 17, so as to convert the original horizontal stretching into inclined stretching in different directions and angles, simulate the detection and comparison of the yarn under different stretching environments in actual use, and more effectively reflect the stretching performance of the textile yarn.

[0053] In summary, in the present invention, a roller shaft 6 with a plurality of wire sleeves 7 is rotatably installed on the movable seat 2. The wire sleeves 7 are pre-wound with yarns 8 to be detected. The free ends of the plurality of yarns 8 extend out of the movable seat 2. Clamping assemblies for positioning both ends of the detection sections of the multi-strand yarns 8 are embedded and installed on the opposite end walls of the movable seat 2 and the traction seat 3. One of the clamping assemblies is used to clamp and position the free end of the yarn 8 up and down, and then the clamping assembly is held by hand and horizontally moved to the traction seat 3. The magnetic attraction positioning between the clamping seat 9 and the second magnetic attraction cavity 301 is utilized to position the free end of the yarn 8 on the traction seat 3;

[0054] In order to improve the stability of the yarn 8 on one side of the movable seat 2, in the same way, the clamping seat 9 is magnetically attracted and positioned on the first magnetic attraction cavity 203, and then the fitting plate 10 is pressed down to complete the clamping and positioning of the yarn 8 on one side of the movable seat 2, so that both ends of the detection section of the yarn 8 are in a stable clamping state. Finally, the traction seat 3 is driven outwards to horizontally stretch the multi-strand yarns 8 in the horizontal direction until they break, and the ultimate tensile force and the stretching length are recorded. By improving the existing horizontal stretching detection structure, on the one hand, it is convenient for horizontal traction after positioning, and there is no need to manually position the multi-strand yarns 8 one by one before and after. On the other hand, for example, multiple groups of synchronous detections can be carried out to improve the detection efficiency;

[0055] In addition, a guiding and adjusting mechanism is added between the movable seat 2 and the traction seat 3 to adjust the pressing distance of the wire guiding assembly 14 and the included angle between a pair of lower wire rollers 17, so as to convert the original horizontal stretching into inclined stretching in different directions and angles, and simulate the detection and comparison of the yarn under different stretching environments in actual use, which can more effectively reflect the stretching performance of the textile yarn.

[0056] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A textile yarn tensile fracture detection device, comprising a detection platform (1) and a movable seat (2) and a traction seat (3) movably mounted on the left and right sides thereof, a linear drive cylinder (5) for horizontally driving the traction seat (3) is fixed at one end of the detection platform (1), and a tension detector (4) connected to the movable seat (2) is fixed at the other end of the detection platform (1), characterized in that: A roller (6) is embedded and installed on the movable seat (2), and a plurality of thread sleeves (7) with yarns (8) are distributed on the roller (6); a lead-out port (202) for the yarns (8) to pass through is provided on the movable seat (2); a magnetic suction cavity 1 (203) and a magnetic suction cavity 2 (301) are respectively provided on the opposite end walls of the movable seat (2) and the traction seat (3); and a clamping component for pressing and positioning the yarns (8) is magnetically installed at the magnetic suction cavity 1 (203) and the magnetic suction cavity 2 (301); The end of the detection platform (1) close to the movable seat (2) is also provided with a guide adjustment mechanism for pulling and redirecting the yarn (8), the guide adjustment mechanism comprising a pair of rotating shafts (16) mounted on the upper end of the detection platform (1) for reverse rotation driving, the outer ends of the pair of rotating shafts (16) are fixed with lower wire rollers (17) through inclined plates, and a wire assembly (14) is installed above the pair of lower wire rollers (17) for lifting.

2. A textile yarn tensile fracture detection device according to claim 1, characterized in that: The clamping assembly comprises a clamping seat (9) and an engaging plate (10) which is movable and liftable on the clamping seat (9); an engaging cavity is provided in the middle of the clamping seat (9); a downwardly recessed clamping groove (902) is provided in the middle of the engaging cavity; a plurality of through grooves (901) which are connected to the clamping groove (902) and correspond to the positions of the wire sleeve (7) are provided on both left and right sides of the clamping seat (9); and a clamping cone head (11) which is adapted to the clamping groove (902) is provided at the bottom end of the engaging plate (10).

3. A textile yarn tensile fracture detection device according to claim 2, characterized in that: The cross-sections of the clamping cone head (11) and the clamping groove (902) are both semi-elliptical structures that are wide at the top and narrow at the bottom, and the outer end wall of the clamping cone head (11) is covered with an anti-slip pad.

4. A textile yarn tensile fracture detection device according to claim 3, characterized in that: Guide rods penetrating to the end of the clamping seat (9) are fixed to the front and rear ends of the embedded plate (10), and magnetic strips are embedded in the left and right end walls of the clamping seat (9).

5. A textile yarn tensile fracture detection device according to claim 4, characterized in that: Electromagnetic plates for magnetically attracting the clamping seat (9) are embedded and installed on the inner walls of the magnetic attraction chamber 1 (203) and the magnetic attraction chamber 2 (301).

6. A textile yarn tensile fracture detection device according to claim 2, characterized in that: A pair of electric push rods (12) for pressing the interlocking plate (10) downwards are fixedly mounted on the top ends of the movable seat (2) and the traction seat (3).

7. A textile yarn tensile fracture detection device according to claim 1, characterized in that: Support frames for rotatably mounting a pair of rotating shafts (16) are fixed at both the front and rear ends of the detection platform (1), a driving motor (18) for rotating one of the rotating shafts (16) is fixed on one of the support frames, and gears respectively sleeved on the ends of the rotating shafts (16) and meshingly connected are rotatably mounted on the other support frame.

8. A textile yarn tensile fracture detection device according to claim 1, characterized in that: A lifting frame (13) for positioning a wire assembly (14) is fixed on both the front and rear sides of the detection platform (1) via a linear lifting cylinder (15); the wire assembly (14) comprises a bracket (141) fixed to the lower ends of both the front and rear sides of the lifting frame (13); an upper wire roller (142) is rotatably mounted between the pair of brackets (141).

9. A textile yarn tensile fracture detection device according to claim 8, characterized in that: The end walls of the upper wire roller (142) and the lower wire roller (17) are both provided with wire grooves corresponding to the positions of the through grooves (901).

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