Yarn tensile property testing device

Abstract

The invention discloses a yarn tensile property testing device which comprises a base and yarns, a rotating frame used for fixing a bobbin, a yarn arranging plate used for keeping the yarns parallel, a first yarn locking mechanism and a second yarn locking mechanism are linearly arranged at the upper end of the base, and the second yarn locking mechanism is used for locking the yarns and is controlled to move through a stretching mechanism; one side of the upper end of the base is provided with a yarn guiding mechanism used for pulling yarn to the first yarn locking mechanism and the second yarn locking mechanism. Yarns are pulled to move through the yarn leading mechanism, are led out through the yarn arranging plate, pass through the first yarn locking mechanism and the second yarn locking mechanism respectively and then are locked through the first yarn locking mechanism and the second yarn locking mechanism, and finally the yarns between the first yarn locking mechanism and the second yarn locking mechanism are subjected to a stretching test through the stretching mechanism. Through the repeated action, the yarn wound on the bobbin can be clamped for multiple times, multiple stretching tests are carried out, and therefore multiple sets of data are obtained, and the test accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of yarn testing, and in particular to a yarn tensile performance testing device. Background Art

[0002] Yarn is a textile made from various fibers through a spinning process. It is the basic material for weaving, rope making, thread making, knitting, and embroidery. As a core element of the textile industry, yarn not only determines the appearance, feel, and performance of the final textile, but also greatly affects the quality and value of textile products. During the yarn production process, tensile testing is required to detect its parameter indicators.

[0003] The Chinese new utility patent with announcement number CN116840040B discloses a tensile performance testing device and testing method for paper yarn production and processing, including a mounting plate, two support plates fixedly connected to the top of the mounting plate, a bidirectional screw rotatably connected to the inner wall of the support plate, a motor fixedly connected to the left side of the support plate, two movable plates threadedly connected on the surface of the bidirectional screw, a motor installed on the inner wall of the movable plate, a turntable fixedly connected to the output end of the motor, and two rubber blocks in contact with each other fixedly connected to the inner wall of the turntable. The invention ensures that paper yarn of any diameter can be fixed through the coordinated operation of the mounting plate, support plate, motor, bidirectional screw, fixed plate, movable plate, motor, turntable, rubber block, and storage groove, and effectively prevents the occurrence of loose clamping, thereby ensuring the accuracy of detection. Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: when fixing the two ends of the yarn, the yarn can only be manually wrapped in the storage groove of the rubber block, and then the yarn is tensile tested by moving the two movable plates in opposite directions. Therefore, only a section of yarn can be tested, and the test data obtained is relatively single, which is difficult to represent the quality of the yarn of the same batch. If multiple tensile tests are performed, the tester needs to perform multiple manual operations, which is more troublesome. Therefore, we propose a yarn tensile performance testing device. Summary of the Invention

[0004] The purpose of the present invention is to provide a yarn tensile performance testing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a yarn tensile performance testing device, comprising a base and yarn, wherein the yarn is wound on a bobbin, and a rotating frame for fixing the bobbin, a wire-straightening plate for keeping the yarn parallel, and a first and second thread-locking mechanisms for locking the yarn are arranged in a line on the upper end of the base;

[0006] Among them, the thread locking mechanism 1 is fixed on the base, and the thread locking mechanism 2 is controlled to move by the stretching mechanism;

[0007] One side of the upper end of the base is provided with a thread guide mechanism for pulling the yarn onto the thread locking mechanism 1 and the thread locking mechanism 2;

[0008] The yarn is driven by the thread guide mechanism, led out from the thread management plate, passes through the thread locking mechanism 1 and the thread locking mechanism 2 respectively, and then is locked by the thread locking mechanism 1 and the thread locking mechanism 2.

[0009] Preferably, the first thread locking mechanism comprises a U-shaped bracket, and a fixed locking block and a dynamic locking block are respectively provided on both sides of the upper end of the U-shaped bracket. The fixed locking block is fixedly mounted on the inner side of the U-shaped bracket, and the dynamic locking block is fixedly mounted on the first driving block. The movement of the first driving block is controlled by the first telescopic rod.

[0010] The end surface of the fixed locking block is provided with a plurality of wave-shaped grooves, and the end surface of the dynamic locking block is provided with a boss matching the grooves;

[0011] The fixed locking block and the dynamic locking block are made of rubber material.

[0012] Preferably, the second thread locking mechanism is the same as the first thread locking mechanism, a push-pull plate is provided on one side of the second thread locking mechanism, and a tension sensor and a distance measuring sensor are provided on one side of the push-pull plate.

[0013] Preferably, the stretching mechanism includes a second telescopic rod fixed on the base, the output end of the second telescopic rod is connected to the tension sensor, the upper end of the base is provided with a first guide rail, and the second wire locking mechanism is slidably connected to the first guide rail through a slider.

[0014] Preferably, the thread guiding mechanism includes a thread clamping mechanism for clamping the yarn, and the thread clamping mechanism is controlled to move laterally or rise and fall by a translation mechanism and a lifting mechanism;

[0015] The wire clamping mechanism includes a bottom plate, a guide rail 2 is provided near the lower end of the bottom plate, two wire clamping sliders are slidably connected to the guide rail 2, and the end surfaces of the two wire clamping sliders are each provided with a hinge column 1;

[0016] A telescopic rod three is provided near the upper end of the base plate, and a driving block two is provided at the output end of the telescopic rod three. The end face of the driving block two is provided with two hinged columns two that match the hinged column one. The hinged column two is connected to the hinged column one by two connecting rods respectively, and the two ends of the connecting rod are hinged to the hinged column one and the hinged column two respectively; the lower ends of the two wire clamping sliders are provided with splints, and the inner side of the splint is provided with rubber pads for clamping yarn.

[0017] Preferably, the translation mechanism includes a fixed plate one located on the side of the base, a guide rail three is provided on the end face of the fixed plate one, a translation plate is connected to the guide rail three for transverse sliding, a screw is rotatably installed on the other end face of the fixed plate one, the screw is driven to rotate by a motor, a fixed block is provided on the translation plate, and the fixed block is connected to the screw by a thread.

[0018] Preferably, the lifting mechanism includes a second fixing plate, the second fixing plate is provided with a transverse guide groove near the upper end, and both ends of the transverse guide groove are inclined downward to form downwardly inclined guide grooves;

[0019] The end surface of the translation plate is provided with two guide rails four, the guide rails four are connected to the lifting plate for sliding up and down, the end surface of the lifting plate is provided with a fixed shaft, a roller is rotatably mounted on the fixed shaft, and the roller is rollingly connected to the transverse guide groove and the lower inclined guide groove;

[0020] A connecting frame is provided on one side of the upper end of the lifting plate, and the wire clamping mechanism is fixedly installed on the connecting frame.

[0021] Preferably, a thread cutting assembly for cutting the yarn is provided on one side of the thread clamping mechanism, and the thread cutting assembly includes a cutting knife fixed on a clamping plate and a cutting pad for use with the cutting knife, and the cutting pad is fixed on another clamping plate.

[0022] Preferably, the rotating frame includes a turntable rotatably mounted on the upper end of the base, a tightening column is provided at the middle of the upper end of the turntable, and the bobbin is sleeved on the tightening column.

[0023] Preferably, the cable management plate is provided with a cable routing opening near the upper end, and the yarn is located inside the cable routing opening.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention clamps the yarn by using the first and second thread locking mechanisms, and then uses the stretching mechanism to perform a stretching test on the yarn between the first and second thread locking mechanisms. The tension sensor can monitor the tension applied to the yarn in real time, and the distance measuring sensor can detect the distance the yarn is stretched in real time.

[0026] The thread clamping mechanism is driven to move to the left by the translation mechanism, so that the roller on the fixed shaft rolls in the transverse guide groove, and the thread clamping mechanism is lowered and the yarn is clamped through the downward inclined guide groove at the left end of the transverse guide groove. After clamping the yarn, the translation mechanism drives the thread clamping mechanism to move to the right again, and the thread clamping mechanism is stopped on the right side of the thread locking mechanism 2 through the downward inclined guide groove on the right side of the transverse guide groove. The yarn is then clamped by the thread locking mechanism 1 and the thread locking mechanism 2, and the yarn between the thread locking mechanism 1 and the thread locking mechanism 2 is stretched through the stretching mechanism. Such repeated actions can clamp the yarn wound on the bobbin multiple times and perform multiple stretching tests, thereby obtaining multiple sets of data and improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 3 A top view of the present invention;

[0030] Figure 4 is a side view of the present invention;

[0031] Figure 5 Schematic diagram of the wire clamping mechanism of the present invention;

[0032] Figure 6 This is a schematic diagram of a thread locking mechanism of the present invention;

[0033] Figure 7 It is a partial structural diagram of the lifting mechanism of the present invention;

[0034] Figure 8 This is a schematic structural diagram of the thread clamping mechanism of the present invention when clamping yarn.

[0035] In the figure: 1. base; 2. yarn; 21. bobbin; 3. rotating frame; 31. turntable; 32. expansion column; 4. cable management plate; 41. cable routing port; 5. thread locking mechanism 1; 51. U-shaped bracket; 52. fixed locking block; 53. dynamic locking block; 54. driving block 1; 55. telescopic rod 1; 56. groove; 57. boss; 6. thread locking mechanism 2; 61. push-pull plate; 7. stretching mechanism; 71. telescopic rod 2; 72. guide rail 1; 8. thread guide mechanism; 9. thread clamping mechanism; 91. bottom plate; 92. guide rail 2; 93. thread clamping slider; 94. hinged column 1; 95. telescopic rod 3; 96. driving 1. Moving block 2; 97. Articulated column 2; 98. Connecting rod; 99. Clamp; 910. Rubber pad; 10. Translation mechanism; 101. Fixed plate 1; 102. Guide rail 3; 103. Translation plate; 104. Screw; 105. Motor; 106. Fixed block; 11. Lifting mechanism; 111. Fixed plate 2; 112. Horizontal guide groove; 113. Lower inclined guide groove; 114. Guide rail 4; 115. Lifting plate; 116. Fixed shaft; 117. Roller; 118. Connecting frame; 12. Wire breaking assembly; 121. Cutting knife; 122. Cutting pad; 13. Tension sensor; 14. Distance sensor. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-8 The present invention provides a technical solution: a yarn tensile performance testing device, comprising a base 1 and a yarn 2, the yarn 2 being wound on a bobbin 21, a rotating frame 3 for fixing the bobbin 21, a wire management plate 4 for keeping the yarn 2 parallel, a wire locking mechanism 1 5 and a wire locking mechanism 2 6 for locking the yarn 2, arranged in a line at the upper end of the base 1, the wire locking mechanism 1 5 being fixed to the base 1, the wire locking mechanism 2 6 being controlled to move by a stretching mechanism 7, a wire routing port 41 being provided near the upper end of the wire management plate 4, and the yarn 2 being located inside the wire routing port 41;

[0038] The rotating frame 3 includes a turntable 31 rotatably mounted on the upper end of the base 1. A tensioning column 32 is provided in the middle of the upper end of the turntable 31. The bobbin 21 is sleeved on the tensioning column 32.

[0039] The thread locking mechanism 1 5 includes a U-shaped bracket 51, and a fixed locking block 52 and a dynamic locking block 53 are respectively provided on both sides of the upper end of the U-shaped bracket 51. The fixed locking block 52 is fixedly mounted on the inner side of the U-shaped bracket 51, and the dynamic locking block 53 is fixedly mounted on the driving block 1 54. The driving block 1 54 is controlled to move by the telescopic rod 1 55. The end surface of the fixed locking block 52 is provided with a plurality of wave-shaped grooves 56, and the end surface of the dynamic locking block 53 is provided with a boss 57 matching the grooves 56. The fixed locking block 52 and the dynamic locking block 53 are made of rubber material;

[0040] The second thread locking mechanism 6 is the same as the first thread locking mechanism 5. A push-pull plate 61 is provided on one side of the second thread locking mechanism 6. A tension sensor 13 and a distance sensor 14 are provided on one side of the push-pull plate 61.

[0041] The stretching mechanism 7 includes a second telescopic rod 71 fixed on the base 1. The output end of the second telescopic rod 71 is connected to the tension sensor 13. A guide rail 72 is provided on the upper end of the base 1. The second thread locking mechanism 6 is slidably connected to the guide rail 72 through a slider.

[0042] When in use, the bobbin 21 is put on the expansion column 32 so that the bobbin 21 can be fixed on the rotating frame 3, the yarn 2 on the bobbin 21 is passed through the wiring port 41 on the wire management plate 4, and then the yarn 2 is continued to be pulled through the wire locking mechanism 1 5 and the wire locking mechanism 2 6, and the yarn 2 is placed on the inner side of the wire locking mechanism 1 5 and the wire locking mechanism 2 6. In the process of pulling the yarn 2, the rotating frame 3 rotates so that the bobbin 21 can be released synchronously, and then the yarn 2 is clamped by the wire locking mechanism 1 5 and the wire locking mechanism 2 6. At this time, the telescopic rod 1 55 controls the driving block 1 54 and the dynamic locking block 53 to move toward the fixed locking block 52, and finally the yarn 2 is clamped between the fixed locking block 52 and the dynamic locking block 53. The fixed locking block 52 and the dynamic locking block 53 are made of rubber material, and the fixed locking block 52 The end face and the end face of the dynamic locking block 53 are provided with multiple wavy grooves 56 and bosses 57, which can increase the friction between the yarn 2 and the locking block, so that the yarn 2 cannot be pulled out after being clamped. After the thread locking mechanism 1 5 and the thread locking mechanism 2 6 clamp the yarn 2, the yarn 2 between the thread locking mechanism 1 5 and the thread locking mechanism 2 6 is stretched through the stretching mechanism 7. At this time, the telescopic rod 2 71 drives the push-pull plate 61 to move so that the thread locking mechanism 2 6 slides to the right, so that the yarn 2 is stretched to the right. The tension sensor 13 can monitor the tension applied to the yarn 2 in real time, and the distance measuring sensor 14 can detect the distance the yarn 2 is stretched in real time. After the yarn 2 breaks, the telescopic rod 2 71 drives the thread locking mechanism 2 6 to return to its original position, completing a stretching test of the yarn 2.

[0043] A thread guide mechanism 8 is provided on one side of the upper end of the base 1 for pulling the yarn 2 onto the thread locking mechanism 1 5 and the thread locking mechanism 2 6. The yarn 2 is driven by the thread guide mechanism 8, led out by the wire management plate 4, passes through the thread locking mechanism 1 5 and the thread locking mechanism 2 6 respectively, and then is locked by the thread locking mechanism 1 5 and the thread locking mechanism 2 6;

[0044] The thread guiding mechanism 8 includes a thread clamping mechanism 9 for clamping the yarn 2. The thread clamping mechanism 9 is controlled to move horizontally or rise and fall by a translation mechanism 10 and a lifting mechanism 11.

[0045] The thread clamping mechanism 9 includes a base plate 91, a guide rail 2 92 is provided near the lower end of the base plate 91, two thread clamping sliders 93 are slidably connected to the guide rail 2 92, and the end faces of the two thread clamping sliders 93 are provided with a hinge column 1 94, a telescopic rod 3 95 is provided near the upper end of the base plate 91, a driving block 2 96 is provided at the output end of the telescopic rod 3 95, and the end face of the driving block 2 96 is provided with two hinge columns 2 97 matching the hinge column 1 94, and the hinge column 2 97 is connected to the hinge column 1 94 by two connecting rods 98 respectively, and the two ends of the connecting rod 98 are hinged to the hinge column 1 94 and the hinge column 2 97 respectively. The lower ends of the two thread clamping sliders 93 are provided with a clamping plate 99, and the inner side of the clamping plate 99 is provided with a rubber pad 910 for clamping the yarn 2;

[0046] The translation mechanism 10 includes a fixed plate 101 located on the side of the base 1. A guide rail 102 is provided on the end surface of the fixed plate 101. A translation plate 103 is connected to the guide rail 102 for transverse sliding. A screw rod 104 is rotatably installed on the other end surface of the fixed plate 101. The screw rod 104 is driven to rotate by a motor 105. A fixed block 106 is provided on the translation plate 103. The fixed block 106 is connected to the screw rod 104 by a thread.

[0047] The lifting mechanism 11 includes a second fixed plate 111, which is provided with a transverse guide groove 112 near the upper end of the second fixed plate 111. The two ends of the transverse guide groove 112 extend downwardly and are inclined to form lower inclined guide grooves 113. The end surface of the translation plate 103 is provided with two fourth guide rails 114. The fourth guide rail 114 is connected to a lifting plate 115 for sliding up and down. The end surface of the lifting plate 115 is provided with a fixed shaft 116. A roller 117 is rotatably mounted on the fixed shaft 116. The roller 117 is rollingly connected to the transverse guide groove 112 and the lower inclined guide groove 113. A connecting frame 118 is provided on one side of the upper end of the lifting plate 115, and the wire clamping mechanism 9 is fixedly mounted on the connecting frame 118.

[0048] A wire breaking assembly 12 for cutting the yarn 2 is provided on one side of the wire clamping mechanism 9. The wire breaking assembly 12 includes a cutting knife 121 fixed on a clamping plate 99 and a cutting pad 122 for use with the cutting knife 121. The cutting pad 122 is fixed on another clamping plate 99.

[0049] During the production process of yarn 2, it is necessary to perform multiple tensile tests on yarn 2 and obtain multiple sets of test data in order to make an accurate quality judgment on the same batch of yarn 2. When the first tensile test is completed, the translation mechanism 10 drives the wire clamping mechanism 9 to move to the left. At this time, the motor 105 drives the screw rod 104 to rotate, so that the fixed block 106 drives the translation plate 103 to move to the left, so that the lifting plate 115 and the connecting frame 118 on the translation plate 103 move to the left, and the roller 117 on the fixed shaft 116 rolls in the transverse guide groove 112. When the roller 117 translates to the leftmost end of the transverse guide groove 112, the translation plate 103 continues to move to the left, so that the roller 117 moves along the lower inclined guide groove 113, so that the lifting plate 115 and the connecting frame 118 descend, so that the wire clamping mechanism 9 installed on the connecting frame 118 descends. At this time, the wire clamping mechanism 9 is located between the wire management plate 4 and the wire locking mechanism 5. Figure 8, then the telescopic rod three 95 controls the driving block two 96 to rise, and the two hinged connecting rods 98 make the two wire clamping sliders 93 approach each other on the guide rail two 92, so that the two clamping plates 99 approach each other and clamp the yarn 2 between the wire management plate 4 and the wire locking mechanism one 5, and the rubber pads 910 on the inside of the two clamping plates 99 can increase the friction force to prevent the yarn 2 from falling off from the inside of the clamping plates 99. When the two clamping plates 99 approach each other, the cutting knife 121 on one side of the clamping plate 99 cuts off the excess yarn 2 on the right side of the wire clamping mechanism 9 to prevent the excess yarn 2 from winding around the equipment and affecting the test data. After the wire clamping mechanism 9 clamps the yarn 2, the translation mechanism 10 drives the translation plate 103 to move to the right. At this time, the wire clamping mechanism 9 rises through the lower inclined guide groove 113 and translates to the left through the transverse guide groove 112. The wire clamping mechanism 9 passes through the transverse The downward inclined guide groove 113 at the right end of the guide groove 112 drops again. At this time, the thread clamping mechanism 9 is located on the right side of the thread locking mechanism 2 6, and the yarn 2 pulled out by the thread clamping mechanism 9 is located between the fixed locking block 52 and the dynamic locking block 53. Then the thread locking mechanism 1 5 and the thread locking mechanism 2 6 clamp the yarn 2 drawn out by the thread clamping mechanism 9, and the thread clamping mechanism 9 releases the yarn 2 and returns to the middle of the transverse guide groove 112. At this time, the yarn 2 between the thread locking mechanism 1 5 and the thread locking mechanism 2 6 is subjected to a second tensile test by the stretching mechanism 7. Such repeated actions can perform multiple tensile tests on the yarn 2 wound on the bobbin 21, thereby obtaining multiple sets of data and improving the accuracy of the test. The waste wire after each test is cut off by the cutting knife 121, and the air gun head (not shown in the figure) is fixed on the base 1 to clean the waste wire to prevent the waste wire from sticking to the equipment and affecting the test data. While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A yarn tensile performance testing device, comprising a base (1) and a yarn (2), wherein the yarn (2) is wound on a bobbin (21), characterized in that: The upper end of the base (1) is provided with a rotating frame (3) for fixing the yarn tube (21), a wire arrangement plate (4) for keeping the yarn (2) parallel, a first wire locking mechanism (5) and a second wire locking mechanism (6) for locking the yarn (2); The first thread locking mechanism (5) is fixed on the base (1), and the second thread locking mechanism (6) is controlled to move by the stretching mechanism (7); A thread guide mechanism (8) for pulling the yarn (2) onto the thread lock mechanism 1 (5) and the thread lock mechanism 2 (6) is provided on one side of the upper end of the base (1); The yarn (2) is driven by the thread guide mechanism (8), led out from the thread management plate (4), passes through the thread locking mechanism 1 (5) and the thread locking mechanism 2 (6), and is then locked by the thread locking mechanism 1 (5) and the thread locking mechanism 2 (6).

2. A yarn tensile performance testing device according to claim 1, characterized in that: The thread locking mechanism (5) comprises a U-shaped bracket (51), and a fixed locking block (52) and a dynamic locking block (53) are respectively provided on both sides of the upper end of the U-shaped bracket (51), the fixed locking block (52) is fixedly mounted on the inner side of the U-shaped bracket (51), and the dynamic locking block (53) is fixedly mounted on a driving block (54), and the driving block (54) is controlled to move by a telescopic rod (55); The end surface of the fixed locking block (52) is provided with a plurality of wave-shaped grooves (56), and the end surface of the dynamic locking block (53) is provided with a boss (57) matching the grooves (56); The fixed locking block (52) and the dynamic locking block (53) are made of rubber material.

3. The yarn tensile performance testing device according to claim 1, characterized in that: The second thread locking mechanism (6) is the same as the first thread locking mechanism (5). A push-pull plate (61) is provided on one side of the second thread locking mechanism (6), and a tension sensor (13) and a distance sensor (14) are provided on one side of the push-pull plate (61).

4. A yarn tensile performance testing device according to claim 3, characterized in that: The stretching mechanism (7) comprises a second telescopic rod (71) fixed on the base (1), the output end of the second telescopic rod (71) is connected to the tension sensor (13), the upper end of the base (1) is provided with a first guide rail (72), and the second thread locking mechanism (6) is slidably connected to the first guide rail (72) via a slider.

5. The yarn tensile performance testing device according to claim 1, characterized in that: The thread guiding mechanism (8) comprises a thread clamping mechanism (9) for clamping the yarn (2), wherein the thread clamping mechanism (9) is controlled to move laterally or to rise and fall by a translation mechanism (10) and a lifting mechanism (11); The wire clamping mechanism (9) includes a bottom plate (91), a second guide rail (92) is provided near the lower end of the bottom plate (91), two wire clamping sliders (93) are slidably connected to the second guide rail (92), and the end surfaces of the two wire clamping sliders (93) are both provided with a hinge column (94); The bottom plate (91) is provided with a telescopic rod three (95) near the upper end, and the output end of the telescopic rod three (95) is provided with a driving block two (96), and the end surface of the driving block two (96) is provided with two hinged columns two (97) matching the hinged column one (94), and the hinged column two (97) and the hinged column one (94) are respectively connected through two connecting rods (98), and the two ends of the connecting rod (98) are respectively hinged to the hinged column one (94) and the hinged column two (97); The lower ends of the two thread clamping sliders (93) are both provided with clamping plates (99), and the inner sides of the clamping plates (99) are provided with rubber pads (910) for clamping the yarn (2).

6. A yarn tensile performance testing device according to claim 5, characterized in that: The translation mechanism (10) comprises a fixed plate (101) located on the side of the base (1), a guide rail (102) is provided on the end face of the fixed plate (101), a translation plate (103) is connected to the guide rail (102) in a transverse sliding manner, a screw rod (104) is rotatably installed on the other end face of the fixed plate (101), the screw rod (104) is driven to rotate by a motor (105), a fixed block (106) is provided on the translation plate (103), and the fixed block (106) is connected to the screw rod (104) by a thread.

7. A yarn tensile performance testing device according to claim 6, characterized in that: The lifting mechanism (11) includes a second fixing plate (111), wherein the second fixing plate (111) is provided with a transverse guide groove (112) near the upper end, and both ends of the transverse guide groove (112) are inclined downward to form a lower inclined guide groove (113); The end surface of the translation plate (103) is provided with two guide rails (114), and the guide rails (114) are connected to the lifting plate (115) in an upward and downward sliding manner. The end surface of the lifting plate (115) is provided with a fixed shaft (116), and a roller (117) is rotatably mounted on the fixed shaft (116). The roller (117) is in rolling connection with the transverse guide groove (112) and the lower inclined guide groove (113); A connecting frame (118) is provided on one side of the upper end of the lifting plate (115), and the wire clamping mechanism (9) is fixedly mounted on the connecting frame (118).

8. The yarn tensile performance testing device according to claim 5, characterized in that: A thread-breaking assembly (12) for cutting the yarn (2) is provided on one side of the thread-clamping mechanism (9). The thread-breaking assembly (12) comprises a cutting knife (121) fixed on a clamping plate (99) and a cutting pad (122) for use with the cutting knife (121). The cutting pad (122) is fixed on another clamping plate (99).

9. The yarn tensile performance testing device according to claim 1, characterized in that: The rotating frame (3) comprises a turntable (31) rotatably mounted on the upper end of the base (1); a tightening column (32) is provided in the middle of the upper end of the turntable (31); and the yarn tube (21) is sleeved on the tightening column (32).

10. The yarn tensile performance testing device according to claim 1, characterized in that: The wire management plate (4) is provided with a wire routing opening (41) near the upper end, and the yarn (2) is located inside the wire routing opening (41).

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